Double-color mold frame

Abstract

The double-color mold frame comprises a fixed mold and a movable mold, the fixed mold is provided with a first feeding port and a second feeding port, the center of the movable mold is connected with a rotary disc, the movable mold is provided with a first mold core and a second mold core, the movable mold is provided with two sets of movable mold inserts, and the two sides of each movable mold insert are provided with a water inlet and a water outlet correspondingly. A water inlet channel and a water outlet channel are arranged in the movable mold, the water inlet channel and the water outlet channel are respectively arranged along the arrangement direction of the water inlet and the water outlet, the water inlet channel and the water outlet channel are not communicated with each other, and a plurality of through holes are formed in the water inlet channel and the water outlet channel and are respectively connected with the water inlet and the water outlet. The movable mold insert is arranged, the water inlet and the water outlet are formed in the movable mold insert, it is guaranteed that cooling water in the movable mold insert flows, the cooling effect is guaranteed, meanwhile, the water inlet channel and the water outlet channel which are not communicated with each other are arranged on the movable mold, cooling water flows between the water inlet and the water outlet in a one-way mode, the cooling efficiency is high, and the cooling effect is good. And the processing efficiency and the processing quality are improved.

Description

Technical Field

[0001] The present application relates to the technical field of mold frames, and in particular to a two-color mold frame. Background Art

[0002] The mold frame is the supporting part of the mold, which is used to combine and fix the various parts of the mold according to a certain pattern and position, and then install it on the workpiece processing equipment such as injection molding machine, die-casting machine, extruder, etc. for work. The mold frame of the injection mold installed on the injection molding machine generally includes a movable mold, a fixed mold, a cavity and a core. During injection molding, the movable mold and the fixed mold are closed, and the molten plastic is injected into the cavity to form an injection molded product with a specific shape. Finally, the injection molded product is demolded. Two-color injection refers to a process method of making two different colors or different types of plastics into finished products of different colors or different surface hardness through an injection molding process.

[0003] Two-color injection molding can be divided into split injection molding or one-piece injection molding according to whether it is molded in the same mold. Split injection molding requires injection molding in two molds, which requires two sets of mold frame systems and has a complex structure. At present, there are molds on the market that can perform two-color injection molding in the same mold frame. For example, a Chinese patent with authorization announcement number CN219618367U and publication date September 1, 2023 discloses a two-color rubber-coated mold for a pen light neck cover, including an upper mold plate and a lower mold plate, and a mold is arranged between the upper mold plate and the lower mold plate. The left mold cavity and the right mold cavity are used for molding, and the molding part located in the left mold cavity is provided with an upper insert and a left lower support rod combined therewith, and the upper insert and the left lower support rod are both cylindrical structures, and the lower end of the upper insert is plugged and connected with the upper end of the left lower support rod, and the upper end of the upper insert is fixedly connected to the upper mold plate, and the molding part located in the right mold cavity is provided with a right lower support rod combined therewith, and the left lower support rod and the right lower support rod have the same structure and are both fixedly inserted in the lower mold plate, and the left mold cavity and the right mold cavity are both provided with a slidable left slider and a right slider.

[0004] The above application uses the left mold cavity and the right mold cavity to form the lining and the outer shell respectively, thereby achieving a two-color injection molding effect. However, the inventor believes that the cooling structure of the mold frame is not mentioned in the application. Most of the existing two-color mold frames use a cooling water channel structure in which the water inlet and outlet are parallel and the water inlet and outlet are both parallel. For two-color molds, the cooling efficiency is not enough, which affects the molding speed and molding quality. Utility Model Content

[0005] The present application provides a two-color mold frame with a cooling effect.

[0006] A two-color mold frame provided in this application adopts the following technical solution:

[0007] A two-color mold frame comprises a fixed mold and a movable mold, wherein a first material feed port and a second material feed port are arranged on the fixed mold, a turntable is connected to the center of the movable mold, a first core and a second core are arranged on the movable mold, both of the first core and the second core are side-opening structures, two groups of movable mold inserts are arranged on the movable mold, and the movable mold inserts can be respectively inserted into the first core and the second core, a water inlet and a water outlet are respectively arranged on both sides of the movable mold insert, a water inlet channel and a water outlet channel are arranged in the movable mold, the water inlet channel and the water outlet channel are respectively arranged along the arrangement direction of the water inlet and the water outlet, the water inlet channel and the water outlet channel are not connected to each other, and a plurality of through holes are arranged on the water inlet channel and the water outlet channel and are respectively connected to the water inlet and the water outlet.

[0008] Preferably, the fixed mold includes a fixed plate, the first feed port and the second feed port are arranged on one side of the fixed plate, a groove is arranged on the other side of the fixed plate and a diverter plate is arranged in the groove, a plurality of diverter grooves are arranged on the diverter plate, diverter holes are arranged on the diverter grooves and the positions of the diverter holes correspond to the positions of the movable mold inserts.

[0009] Preferably, an inverted U-shaped cooling channel is provided in the movable mold insert, the water inlet and the water outlet are connected to the cooling channel and the water inlet and the water outlet are respectively located on both sides of the bottom of the movable mold insert, the water inlet channel and the water outlet channel are parallel to each other and staggered, and the ends of the water inlet channel and the water outlet channel are respectively located at both ends of the movable mold.

[0010] Preferably, the first core and the second core have the same structure, the first core includes a left part and a right part, and the left part and the right part are combined to form an isosceles trapezoid, the left part and the right part are slidably connected to the movable mold, and a plurality of grooves are arranged on one side where the left part and the right part are close to each other, the movable mold insert is arranged in the groove, and the gap between the movable mold insert and the groove is a cavity, the fixed mold is provided with guide rods inclined outward, and a spring is sleeved on the guide rods, the guide rods are arranged in pairs and the paired guide rods correspond to the left part and the right part respectively, and the left part and the right part are provided with guide holes corresponding to the guide rods.

[0011] Preferably, a plurality of guide plates are provided at both ends of the fixed mold, the guide plates are located on both sides of the first core and the second core and between the first core and the second core, and inclined protrusions or grooves are provided on the guide plates, and the guide plates are slidably connected with the end faces of the first core and the second core through the protrusions or grooves.

[0012] Preferably, the inclination angle of the protrusion or groove on the guide plate matches the angle of the guide rod.

[0013] Preferably, limit members are provided at both ends of the movable mold, and the cross-section of the limit members is in a "]" shape. One end of the limit member is connected to the movable mold, and the other end of the limit member is clamped between the left and right parts of the first core or the second core, and the ends of the left and right parts are provided with horizontal grooves corresponding to the size of the limit member.

[0014] Preferably, positioning members are provided on both sides of the fixed mold and the movable mold, and the positioning members include concave blocks and convex blocks that cooperate with each other, and the concave blocks and the convex blocks are respectively located on the fixed mold and the movable mold.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. The present application can realize two-color injection molding by arranging a first feed port and a second feed port on the fixed mold, and arranging a first core and a second core on the movable mold; by arranging a movable mold insert and arranging a water inlet and a water outlet in the movable mold insert, the flow of cooling water in the movable mold insert is ensured to ensure the cooling effect, and at the same time, a water inlet channel and a water outlet channel that are not connected to each other are arranged on the movable mold, the water inlet channel is connected to multiple water inlets, and the water outlet channel is connected to multiple water outlets, the cooling water flows unidirectionally between the water inlet and the water outlet, the cooling efficiency is high, and the processing efficiency and processing quality can be effectively improved.

[0017] 2. An inverted U-shaped cooling channel is provided in the movable mold insert to ensure the cooling efficiency of the movable mold insert. At the same time, the water inlet channel and the water outlet channel are parallel to each other and staggered. The ends of the water inlet channel and the water outlet channel are respectively provided at both ends of the movable mold to facilitate the connection of the pipeline.

[0018] 3. By arranging inclined guide rods and springs on the first core and the second core, and arranging a convex portion or a groove with the same angle as the guide rod on the guide plate, the stable opening and closing of the first core and the second core is ensured; by arranging limiters at both ends of the movable mold, and arranging positioning members on the sides of the fixed mold and the movable mold, it is ensured that the movable mold can be stably connected with the fixed mold after rotation, thereby ensuring the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of a two-color mold frame in a preferred embodiment of the present application.

[0020] Figure 2 It is a stereoscopic image of the two-color mold frame from another perspective in the preferred embodiment of the present application.

[0021] Figure 3 It is a front view of the two-color mold frame in the preferred embodiment of the present application.

[0022] Figure 4 It is an exploded view of the two-color mold frame in the preferred embodiment of the present application.

[0023] Figure 5 It is a schematic diagram of the structure of the movable mold insert in the preferred embodiment of the present application.

[0024] Figure 6 It is a cross-sectional view of the movable mold in the preferred embodiment of the present application.

[0025] Explanation of the reference numerals in the accompanying drawings: 1. fixed mold; 2. movable mold; 201. water inlet channel; 202. water outlet channel; 3. first feed port; 4. second feed port; 5. first core; 6. second core; 7. movable mold insert; 701. water inlet; 702. water outlet; 8. guide rod; 9. spring; 10. guide plate; 11. limit member; 12. positioning member. DETAILED DESCRIPTION

[0026] The present application is further described in detail below in conjunction with the accompanying drawings.

[0027] The embodiment of the present application discloses a two-color mold frame.

[0028] Reference Figures 1 to 4 A two-color mold frame includes a fixed mold 1 and a movable mold 2. The fixed mold 1 includes a fixed plate, a first feed port 3 and a second feed port 4 are arranged on one side of the fixed plate, a groove is arranged on the other side of the fixed plate, and a diverter plate is arranged in the groove, a plurality of diverter grooves are arranged on the diverter plate, and diverter holes are arranged on the diverter grooves; a turntable is connected to the center of the movable mold 2, and a first core 5 and a second core 6 are arranged on the movable mold 2. The first core 5 and the second core 6 are both side-opening structures. Specifically, the first core 5 and the second core 6 in this example have the same structure. The first core 5 includes a left part and a right part, and the left part and the right part are combined to form an isosceles trapezoid. The left part A plurality of grooves are arranged on one side where the right part is slidably connected with the movable mold 2 and the left part and the right part are close to each other, a movable mold insert 7 is arranged in the groove and the gap between the movable mold insert 7 and the groove is a cavity. Specifically, the movable mold insert 7 in this example is embedded in the movable mold 2 and the movable mold insert 7 can be inserted into the first core 5 and the second core 6, and the position of the movable mold insert 7 corresponds to the position of the diversion hole; a guide rod 8 inclined outward is arranged on the fixed mold 1 and a spring 9 is sleeved on the guide rod 8, the guide rods 8 are arranged in pairs and the paired guide rods 8 correspond to the left part and the right part respectively, and guide holes corresponding to the guide rods 8 are arranged on the left part and the right part.

[0029] Reference Figures 1 to 4, a plurality of guide plates 10 are arranged at both ends of the fixed mold 1, the guide plates 10 are located on both sides of the first core 5 and the second core 6 and between the first core 5 and the second core 6, an inclined convex portion or a groove is arranged on the guide plate 10, and the guide plate 10 is slidably connected with the end faces of the first core 5 and the second core 6 through the convex portion or the groove, and the inclination angle of the convex portion or the groove on the guide plate 10 matches the angle of the guide rod 8; a limiting member 11 is arranged at both ends of the movable mold 2, and the cross section of the limiting member 11 is in the shape of "]", one end of the limiting member 11 is connected to the movable mold 2, and the limiting member The other end of the member 11 is clamped between the left and right parts of the first core 5 or the second core 6, and the ends of the left and right parts are provided with horizontal grooves corresponding to the size of the limiter; positioning members 12 are provided on both sides of the fixed mold 1 and the movable mold 2, and the positioning members 12 include mutually matching concave blocks and convex blocks, which are respectively located on the fixed mold 1 and the movable mold 2. By arranging the guide rod 8, the guide plate 10, the limiter 11 and the positioning member 12, the opening and closing of the first core and the second core can be guaranteed, and at the same time, it can be ensured that the movable mold 2 can be stably connected with the fixed mold 1 after rotation, thereby ensuring the processing quality.

[0030] Reference Figure 5 and Figure 6 , an inverted U-shaped cooling channel is arranged in the movable mold insert 7, and a water inlet 701 and a water outlet 702 are respectively arranged on both sides of the bottom of the movable mold insert 7, and the water inlet 701 and the water outlet 702 are connected to the cooling channel, and a water inlet channel 201 and a water outlet channel 202 are arranged in the movable mold 2, and the water inlet channel 201 and the water outlet channel 202 are respectively arranged along the arrangement direction of the water inlet 701 and the water outlet 702, and the water inlet channel 201 and the water outlet channel 202 are parallel to each other and staggered. The ends of the water inlet channel 201 and the water outlet channel 202 are respectively located at the two ends of the movable mold 2, and the water inlet channel 201 and the water outlet channel 202 are not connected to each other. 01 and the water outlet channel 202 are provided with a plurality of through holes and are connected with the water inlet 701 and the water outlet 702 respectively; by providing a movable mold insert 7 and providing a water inlet 701 and a water outlet 702 in the movable mold insert 7, the circulation of cooling water in the movable mold insert 7 is guaranteed, and the cooling effect is ensured. At the same time, the movable mold 2 is provided with a water inlet channel 201 and a water outlet channel 202 that are not connected to each other, the water inlet channel 201 is connected with a plurality of water inlets 701, and the water outlet channel 202 is connected with a plurality of water outlets 702. The cooling water flows unidirectionally between the water inlet 701 and the water outlet 702, and the cooling efficiency is high, which can further improve the processing efficiency and processing quality.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A two-color mold frame, characterized in that: The invention comprises a fixed mold (1) and a movable mold (2), wherein the fixed mold (1) is provided with a first feed port (3) and a second feed port (4), the center of the movable mold (2) is connected with a turntable, the movable mold (2) is provided with a first core (5) and a second core (6), both of which are side-opening structures, the movable mold (2) is provided with two groups of movable mold inserts (7), and the movable mold inserts (7) can be respectively inserted into the first core (5) and the second core (6), and the two sides of the movable mold inserts (7) are respectively provided with feed ports (3) and (4). A water inlet (701) and a water outlet (702) are provided in the movable mold (2); the water inlet channel (201) and the water outlet channel (202) are respectively arranged along the direction in which the water inlet (701) and the water outlet (702) are arranged; the water inlet channel (201) and the water outlet channel (202) are not connected to each other; a plurality of through holes are provided on the water inlet channel (201) and the water outlet channel (202) and are respectively connected to the water inlet (701) and the water outlet (702).

2. A two-color mold frame according to claim 1, characterized in that: The fixed mold (1) comprises a fixed plate, one side of which is provided with the first feed port (3) and the second feed port (4), the other side of which is provided with a groove and a diverter plate is provided in the groove, a plurality of diverter grooves are provided on the diverter plate, and diverter holes are provided on the diverter grooves, and the positions of the diverter holes correspond to the positions of the movable mold inserts (7).

3. A two-color mold frame according to claim 1, characterized in that: An inverted U-shaped cooling channel is arranged in the movable mold insert (7); the water inlet (701) and the water outlet (702) are connected to the cooling channel and the water inlet (701) and the water outlet (702) are respectively located at two sides of the bottom of the movable mold insert (7); the water inlet channel (201) and the water outlet channel (202) are parallel to each other and staggered; and the ends of the water inlet channel (201) and the water outlet channel (202) are respectively located at two ends of the movable mold (2).

4. A two-color mold frame according to claim 1, characterized in that: The first core (5) and the second core (6) have the same structure. The first core (5) comprises a left part and a right part, and the left part and the right part are combined to form an isosceles trapezoid. The left part and the right part are slidably connected to the movable mold (2), and a plurality of grooves are arranged on one side where the left part and the right part are close to each other. The movable mold insert (7) is arranged in the groove, and the gap between the movable mold insert (7) and the groove is a cavity. The fixed mold (1) is provided with a guide rod (8) inclined outward, and a spring (9) is sleeved on the guide rod (8). The guide rods (8) are arranged in pairs, and the paired guide rods (8) correspond to the left part and the right part respectively. The left part and the right part are provided with guide holes corresponding to the guide rods (8).

5. A two-color mold frame according to claim 4, characterized in that: A plurality of guide plates (10) are provided at both ends of the fixed mold (1), the guide plates (10) being located on both sides of the first core (5) and the second core (6) and between the first core (5) and the second core (6), the guide plates (10) being provided with inclined protrusions or grooves, and the guide plates (10) being slidably connected with the end faces of the first core (5) and the second core (6) through the protrusions or grooves.

6. A two-color mold frame according to claim 5, characterized in that: The inclination angle of the protrusion or groove on the guide plate (10) matches the angle of the guide rod (8).

7. The two-color mold frame according to claim 5, characterized in that: Limiting members (11) are provided at both ends of the movable mold (2), the cross section of the limiting member (11) is in a "]" shape, one end of the limiting member (11) is connected to the movable mold (2), the other end of the limiting member (11) is clamped between the left and right parts of the first core (5) or the second core (6), and the ends of the left and right parts are provided with horizontal grooves corresponding to the size of the limiting member.

8. A two-color mold frame according to claim 4, characterized in that: Positioning members (12) are arranged on both sides of the fixed mold (1) and the movable mold (2). The positioning members (12) include a concave block and a convex block that cooperate with each other. The concave block and the convex block are respectively located on the fixed mold (1) and the movable mold (2).

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