A two-color mold with dynamic mold cavity switching through a slider

Abstract

The present invention discloses a two-color mold for switching a movable mold cavity through a slider, comprising a movable mold part and a fixed mold part that match each other, a rotating frame is arranged on the movable mold part, a first movable mold and a second movable mold are arranged on the rotating frame, and the fixed mold part comprises a first fixed mold that matches the first movable mold, and also comprises a second fixed mold that matches the second movable mold, characterized in that: the first movable mold and the second movable mold have the same structure, the first movable mold comprises a movable mold first opening plate and a movable mold plate, and a damping rod is also arranged between the movable mold first opening plate and the movable mold plate, two groups of fixed insert groups are arranged in the movable mold first opening plate, each group of fixed insert groups is composed of a plurality of equally distributed fixed inserts, each fixed insert is provided with a fixed mold cavity, the movable mold plate is also slidably connected with a slider located between the two groups of fixed insert groups, and a plurality of equally distributed slider mold cavities are respectively arranged on both sides of the top surface of the slider.

Description

Technical Field

[0001] The invention relates to the field of injection molding molds, in particular to a two-color mold for switching dynamic mold cavities through a slider. Background Art

[0002] When using injection molding molds to produce products, sometimes it is necessary to injection mold two materials of different colors and materials into one product. Traditionally, when producing such workpieces, it is necessary to first mold a material or color in the cavity, then open the mold, adjust the internal shape of the cavity, and then close the mold to mold another material or color. The operation is very cumbersome and the work efficiency is relatively low, resulting in high production costs. In order to solve the above problems, some manufacturers have now developed a two-color mold with a special structure. This type of mold has two pairs of movable mold parts and fixed mold parts, and the two movable mold parts are arranged on a rotating frame. The rotation of the rotating frame can allow the two movable mold parts to exchange positions and close the molds with different fixed mold parts to form different cavities. In this way, the purpose of injection molding two materials of different colors or different materials into one product can be achieved quickly and conveniently.

[0003] However, the above-mentioned two-color mold is only suitable for products with a certain structure, such as Figure 1 As shown, the product includes part A and part B, where both parts A and B span the parting surface, so the two-color mold with the above structure cannot be used for preparation. Traditionally, an extremely complex mold is required to achieve this. This type of mold can drive the product itself to rotate and switch, resulting in a high cost for the mold itself and a high price for the molding machine, which puts great cost pressure. In order to solve the above problems, embedded molding is often used now. Two molding machines are used to manually transfer the primary product into the secondary mold. This model requires a lot of manpower, has low production efficiency, and a high product defect rate.

[0004] Therefore, a method or device capable of solving the above problems is now needed. Summary of the invention

[0005] The present invention aims to solve the above-mentioned deficiencies in the prior art and proposes a two-color mold with a simple structure, ingenious design, reasonable layout, and the ability to quickly, conveniently and at low cost realize the secondary molding process by switching the dynamic model cavity through a slider.

[0006] The technical solution of the present invention is: a two-color mold for switching the dynamic mold cavity through a slider, including a dynamic mold part and a fixed mold part that match each other, the dynamic mold part is provided with a rotating frame, the rotating frame is provided with a first dynamic mold 1 and a second dynamic mold 2, the fixed mold part includes a first fixed mold 3 matched with the first dynamic mold 1, and also includes a second fixed mold 4 matched with the second dynamic mold 2, characterized in that: the first dynamic mold 1 and the second dynamic mold 2 have the same structure, the first dynamic mold 1 includes a dynamic mold first opening plate 15 and a dynamic mold plate 16, and a damping rod 17 is also provided between the dynamic mold first opening plate 15 and the dynamic mold plate 16, and the dynamic mold first opening plate 15 is provided with a Two groups of fixed insert groups, each group of fixed insert groups is composed of a plurality of equally distributed fixed inserts 5, each fixed insert 5 is provided with a fixed cavity 6, the movable template 16 is also slidably connected with a slider 8 located between the two groups of fixed insert groups, a plurality of equally distributed slider cavities are respectively provided on both sides of the top surface of the slider 8, the slider cavities are divided into a first slider cavity 9 and a second slider cavity 10, the two slider cavities are staggered, and the slider cavities can match the fixed cavity 6, both ends of the slider 8 are provided with driving inclined surfaces 11, and both ends of the top surface of the slider 8 are also provided with positioning protrusions 12,

[0007] The first fixed mold 3 and the second fixed mold 4 have the same structure. A locking plate 13 is fixedly connected to the first fixed mold 3. The locking plate 13 is provided with a locking inclined surface 14 matching the driving inclined surface 11. Two positioning grooves matching the positioning protrusions 12 are also provided on the bottom surface of the first fixed mold 3.

[0008] A locking plate 18 is provided on the side of the first fixed mold 3, and a driving protrusion 19 is provided on the bottom of the locking plate 18. A driving block 20 is rotatably supported on the side of the movable mold first opening plate 15. One end of the driving block 20 matches the position of the driving protrusion 19, and the other end of the driving block 20 is connected to a reset spring 21. The other end of the reset spring 21 is fixedly connected to the movable mold first opening plate 15, and a fixed block 22 matching the driving block 20 is fixedly connected to the side of the movable mold 16.

[0009] Compared with the prior art, the present invention has the following advantages:

[0010] This type of two-color mold with a slider for dynamic mold cavity switching has a simple structure, ingenious design, and reasonable layout. It is designed to solve the problems of traditional molds in preparing two different products with the same parts, and has a special structure. It uses the sliding of a slider with different slider cavities to match two different slider cavities with a fixed cavity respectively, thereby forming two different cavities for product injection molding, and then obtaining two different products in a relatively simple two-color mold. It is simple to operate, smooth in action, and does not require additional manual operation, which can save labor costs while improving production efficiency. In addition, its manufacturing process is simple and its manufacturing cost is low, so it can be said that it has many advantages and is particularly suitable for promotion and application in this field, and its market prospects are very broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram (stereoscopic diagram and cross-sectional diagram) of the product to be prepared in an embodiment of the present invention.

[0012] Figure 2 It is a schematic structural diagram of an embodiment of the present invention.

[0013] Figure 3 It is a schematic diagram of the structure of an embodiment of the present invention (excluding the first fixed mold and the second fixed mold).

[0014] Figure 4 It is a schematic structural diagram of the fixed insert and the sliding block in an embodiment of the present invention.

[0015] Figure 5 It is a structural schematic diagram (two angles) of the downward state of the slider relative to the fixed insert group after the product A is prepared.

[0016] Figure 6 It is a structural schematic diagram (two angles) of the sliding block in translation relative to the fixed insert group after the sliding block moves downward.

[0017] Figure 7 It is a structural schematic diagram (two angles) of the upward state of the slider relative to the fixed insert group after it has translated to the next cavity position.

[0018] Figure 8 It is a schematic diagram of the structure of an embodiment of the present invention in a mold closing state (including front and side views).

[0019] Fig. 9 It is a structural schematic diagram (including front view and side view directions) of mold opening state 1, in which the movable mold and the fixed mold are separated.

[0020] Fig.10 It is a structural schematic diagram (including front view and side view directions) of mold opening state 2 in an embodiment of the present invention, in which the movable mold is first opened and the movable mold plate is separated.

[0021] Fig.11 It is a structural schematic diagram (including front view and side view directions) of mold opening state three, in which the locking plate and the movable mold are completely separated.

[0022] Fig.12 It is a schematic diagram of the structure after the rotating frame rotates and before mold closing (including the main view and side view directions).

[0023] Fig.13 It is a structural schematic diagram (including front view and side view) of the mold closing state 1 and the contact state between the locking plate and the slider in an embodiment of the present invention.

[0024] Fig.14 This is a schematic structural diagram (including front and side views) of the second mold closing state of an embodiment of the present invention, after the locking plate pushes the slider to move horizontally.

[0025] Fig.15 It is a schematic structural diagram (including front view and side view) of mold closing state three of an embodiment of the present invention, after the movable mold contacts the fixed mold.

[0026] Fig.16 It is a schematic diagram of the structure of an embodiment of the present invention in a completely molded state (including front and side views). DETAILED DESCRIPTION

[0027] The specific implementation of the present invention will be described below with reference to the accompanying drawings. Figures 1 to 16 As shown: a two-color mold for switching the dynamic mold cavity through a slider, including a dynamic mold part and a fixed mold part that match each other, the dynamic mold part is provided with a rotating frame, the rotating frame is provided with a first dynamic mold 1 and a second dynamic mold 2, the fixed mold part includes a first fixed mold 3 matched with the first dynamic mold 1, and also includes a second fixed mold 4 matched with the second dynamic mold 2, the first dynamic mold 1 and the second dynamic mold 2 have the same structure, the first dynamic mold 1 includes a dynamic mold first opening plate 15 and a dynamic mold plate 16, and a damping rod 17 is further provided between the dynamic mold first opening plate 15 and the dynamic mold plate 16, and two groups of fixed insert groups are provided in the dynamic mold first opening plate 15 Each fixed insert group is composed of a plurality of equally spaced fixed inserts 5, each fixed insert 5 is provided with a fixed cavity 6, the movable template 16 is also slidably connected with a slider 8 located between the two fixed insert groups, a plurality of equally spaced slider cavities are respectively provided on both sides of the top surface of the slider 8, the slider cavities are divided into a first slider cavity 9 and a second slider cavity 10, the two slider cavities are staggered, and the slider cavities can match the fixed cavity 6, both ends of the slider 8 are provided with driving inclined surfaces 11, and both ends of the top surface of the slider 8 are also provided with positioning protrusions 12,

[0028] The first fixed mold 3 and the second fixed mold 4 have the same structure. A locking plate 13 is fixedly connected to the first fixed mold 3. The locking plate 13 is provided with a locking bevel 14 matching the driving bevel 11, and two positioning grooves matching the positioning protrusion 12 are also provided on the bottom surface of the first fixed mold 3. It should be noted that the first fixed mold 3 and the second fixed mold 4 have the same structure, but the shapes of the cavities in their mold cores are different. The shape of the cavity in the first fixed mold 3 matches the first slider cavity 9, and they together form a part of product A. The shape of the cavity in the second fixed mold 4 matches the second slider cavity 10, and they together form the shape of product B. The final product obtained by this two-color mold is the A plus B form obtained after secondary molding.

[0029] A locking plate 18 is provided on the side of the first fixed mold 3, and a driving protrusion 19 is provided on the bottom of the locking plate 18. A driving block 20 is rotatably supported on the side of the movable mold first opening plate 15. One end of the driving block 20 matches the position of the driving protrusion 19, and the other end of the driving block 20 is connected to a reset spring 21. The other end of the reset spring 21 is fixedly connected to the movable mold first opening plate 15, and a fixed block 22 matching the driving block 20 is fixedly connected to the side of the movable mold 16.

[0030] The working process of the two-color mold for switching the movable mold cavity by the slider in the embodiment of the present invention is as follows: first, the molding machine is started, the first movable mold 1 is molded with the first fixed mold 3 (marked as the first mold), and the second movable mold 2 is molded with the second fixed mold 4 (marked as the second mold), and the molten material is injected into the two sets of molds by the molding machine. After the material is cooled, the product A is formed in the first mold, and the product B is formed in the second mold. The cavity of the first mold is formed by the fixed cavity 6 on the fixed insert 5, the first slider cavity 9 on the slider 8 and the cavity of the fixed mold insert in the first fixed mold 3. Product A is part A in the target product. In the first injection molding process, product B in the second mold is a waste product (because it is not molded on the basis of product A), so it is ejected and discarded after the mold is opened. This is one-time molding;

[0031] Then the mold is opened, and after the waste in the second mold is ejected, the rotating frame rotates 180°, and the first movable mold 1 and the second movable mold 2 exchange positions. At this time, the first movable mold 1 is molded with the second fixed mold 4 (still the first mold), and the second movable mold 2 is molded with the first fixed mold 3 (still the second mold). Since the first movable mold 1 and the second movable mold 2 have the same structure, and the first fixed mold 3 has the same structure as the second fixed mold 4, after injection molding, product A will still be prepared in the first mold, but part B is added to product A in the second mold to form a composite product combining part A and part B, that is, the target product. This is secondary molding;

[0032] This process is repeated to continuously obtain the target product after secondary molding from the second mold.

[0033] In the first mold, the slide 8 is in position 1 (eg Figure 4 As shown in the figure), the first slider cavity 9 thereon matches with the fixed cavity 6 to form a cavity matching with the product A. After the first mold is opened, the product A obtained in the one-time molding process moves to the bottom of the second fixed mold 4 corresponding to the second mold along with the current movable mold. During the mold opening process, the locking template 18 moves upward, and the driving protrusion 19 thereon drives the driving block 20 to rotate, so that one end of the driving block 20 presses down the fixed block 22, thereby separating the movable mold first opening plate 15 and the movable mold plate 16. The movable mold plate 16 moves downward relative to the movable mold first opening plate 15, that is, the slider 8 moves downward relative to the fixed insert 5. At this time, the product A remains on the fixed insert 5; due to the existence of the damping rod 17, during the operation of the rotating frame, the movable mold first opening plate 15 and the movable mold plate 16 can always remain separated until they are re-contacted during the next mold closing.

[0034] When the mold is closed, the locking bevel 14 at the bottom of the locking plate 13 contacts the driving bevel 11 on the slider 8 and converts the longitudinal movement into horizontal movement. The slider 8 moves laterally relative to the fixed insert 5. When the locking bevel 14 separates from the driving bevel 11, the horizontal movement of the slider 8 ends and the slider 8 is in position 2 (such as Figure 6 As shown), after the mold is closed, under the action of the molding machine, the movable mold first opens the plate 15 and re-contacts the movable mold plate 16. At this time, since the slider 8 has moved horizontally for a unit distance, the second slider cavity 10 on the slider 8 matches the fixed cavity 6. At this time, the cavity contains a product A, and the second slider cavity 10 also forms the shape of product B together with the cavity part on the second fixed mold 4. Injection molding is performed in this state to obtain product A plus B, that is, the target product, on the basis of product A.

Claims

1. A two-color mold for switching between movable mold cavities through a slider, comprising a movable mold part and a fixed mold part that match each other, the movable mold part is provided with a rotating frame, the rotating frame is provided with a first movable mold (1) and a second movable mold (2), the fixed mold part comprises a first fixed mold (3) matched with the first movable mold (1), and also comprises a second fixed mold (4) matched with the second movable mold (2), characterized in that: The first movable mold (1) and the second movable mold (2) have the same structure. The first movable mold (1) comprises a movable mold opening plate (15) and a movable mold plate (16). A damping rod (17) is provided between the movable mold opening plate (15) and the movable mold plate (16). Two groups of fixed insert blocks are provided in the movable mold opening plate (15). Each group of fixed insert blocks is composed of a plurality of fixed insert blocks (5) distributed at equal intervals. Each fixed insert block (5) is provided with a fixed cavity (6). The movable mold plate (16) is also provided with a sliding The movable connection is provided with a slider (8) located between the two groups of fixed insert blocks, and a plurality of slider cavities are respectively arranged on both sides of the top surface of the slider (8) and are distributed at equal intervals. The slider cavities are divided into a first slider cavity (9) and a second slider cavity (10). The two slider cavities are distributed alternately, and the slider cavities can match the fixed cavity (6). Both ends of the slider (8) are provided with driving inclined surfaces (11), and both ends of the top surface of the slider (8) are also provided with positioning protrusions (12). The first fixed mold (3) and the second fixed mold (4) have the same structure. A locking plate (13) is fixedly connected to the first fixed mold (3). The locking plate (13) is provided with a locking inclined surface (14) matching the driving inclined surface (11). Two positioning grooves matching the positioning protrusions (12) are also provided on the bottom surface of the first fixed mold (3). A locking plate (18) is provided on the side of the first fixed mold (3), and a driving protrusion (19) is provided on the bottom of the locking plate (18). A driving block (20) is rotatably supported on the side of the movable mold opening plate (15), one end of the driving block (20) matches the position of the driving protrusion (19), and the other end of the driving block (20) is connected to a return spring (21), and the other end of the return spring (21) is fixedly connected to the movable mold opening plate (15). A fixed block (22) matching the driving block (20) is fixedly connected to the side of the movable mold (16).

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