Double-color mold device with cavity follow-up rotation optimization function

Abstract

The utility model discloses a double-color mold device with a cavity follow-up rotation optimizing function, which belongs to the technical field of injection molds, and comprises a device base, a mounting plate is fixedly mounted at the upper end of the device base, and the mounting plate is fixedly mounted at the lower end of the device base. A lower mold fixing plate is fixedly mounted at the upper end of the mounting plate, an upper mold fixing plate is arranged on the upper side of the lower mold fixing plate, a lower mold plate is mounted in the middle of the upper end of the lower mold fixing plate in a threaded mode, and a flow guide plate is fixedly mounted at the position, located on the front side of the lower mold plate, of the upper end of the lower mold fixing plate. After injection of the single-color casting mold is completed, the electric push rod can jack up the whole upper mold fixing plate downwards, so that a certain gap is formed between the upper mold fixing plate and the lower mold fixing plate to facilitate rotation of the upper mold fixing plate on the upper side, and when the upper mold fixing plate and the lower mold fixing plate rotate mutually, abrasion of injection molding to an internal mold is avoided, and the precision of a finished product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and more particularly to a two-color mold device with a cavity follow-up rotation optimization function. Background Art

[0002] A two-shot mold is one in which two plastic materials are injected into the same injection molding machine, forming the product in two separate passes, but the product is ejected only once. This molding process, also known as double-shot molding, is typically completed with a single set of molds and requires a dedicated two-shot molding machine.

[0003] A Chinese patent discloses a two-color mold whose cavity rotates and moves with the movable mold (authorization announcement number CN212352691U), comprising a fixed mold carrier (1) and a movable mold carrier (2). The fixed mold carrier adopted in the utility model is provided with an A core, an A pressure groove, an A pressing surface, a B core, a B pressure groove, a B pressing surface, a wedge groove and a push pin, and the push pin is provided with a pin bevel; the movable mold carrier is provided with a cavity, a buckle slider, and the buckle slider is provided with a push hole, a block tightening surface and a wedge head; the left part of the device, the cavity surrounded by the A core and the cavity is the cavity of the A color part of the molded product; the right part of the device, the cavity surrounded by the B core and the cavity is the cavity of the injection molded product of the two-color composite molded product of the B color material and the A color part; the device is formed by The cavity is set in the movable mold part of the mold, and a buckle slider and a push pin are provided. In the process of converting the color material composite molding product, the A color part can be transferred with the mold cavity, avoiding the technical solution of scratching and damaging the A color part, so that the production of two-color products can achieve the purpose of improving the qualified rate, reducing costs and improving efficiency. During the injection molding process, this device moves the A color part synchronously. In the actual operation process, when rotating, the mold inside the mold has a certain height. When rotating, the abrasive tool is easy to contact the internal mold, thereby scratching the mold. Summary of the Invention

[0004] The purpose of the utility model is to provide a two-color mold device with a cavity follow-up rotation optimization function to solve the problems raised in the above background technology.

[0005] A two-color mold device with a cavity rotation optimization function includes a device base, a mounting plate fixedly mounted on the upper end of the device base, a lower mold fixing plate fixedly mounted on the upper end of the mounting plate, an upper mold fixing plate provided on the upper side of the lower mold fixing plate, a lower mold plate threadedly mounted on the middle portion of the upper end of the lower mold fixing plate, a guide plate fixedly mounted on the upper end of the lower mold fixing plate located in front of the lower mold plate, and a rotation groove provided on the upper end of the lower mold fixing plate located at a peripheral position of the lower mold plate;

[0006] A connecting plate is fixedly installed on the upper end of the upper mold fixing plate, an electric push rod is fixedly installed on the middle part of the upper side of the connecting plate, and a top block is fixedly installed on the lower output end of the electric push rod through the connecting plate. The upper end of the connecting plate is located at the front and rear sides of the electric push rod and is provided with injection grooves. The lower end of the upper mold fixing plate is located on both sides of the top block and a pair of upper templates are threadedly installed. A pair of rotating wheels corresponding to the rotating grooves are provided at the lower end of the upper mold fixing plate, and the rotating wheels and the upper mold fixing plate are fixedly connected by a connecting spring.

[0007] Furthermore, a plurality of mold push rods are provided on the upper side of the device base, the upper ends of the mold push rods extend to the interior of the lower mold plate, and the lower ends of the mold push rods are connected to the demoulding device.

[0008] By adopting the above technical solution, when the mold injection is completed and it comes to the demoulding stage, the demoulding device will push the mold push rod upward, so that the mold inside the lower template can be pushed up for demoulding.

[0009] Furthermore, a lifting ring is fixedly installed on the rear side of the lower mold fixing plate.

[0010] By adopting the above technical solution, the lower mold fixing plate can be hoisted and moved through the hoisting ring, which is convenient for transportation.

[0011] Furthermore, four guide columns are fixedly installed at the four corners of the lower side of the upper mold fixing plate, and guide grooves are provided at the four corners of the upper end of the lower mold fixing plate at the positions of the guide columns.

[0012] By adopting the above technical solution, the lower mold fixing plate and the upper mold fixing plate can be positioned through the guide groove, which facilitates the alignment of the injection mold.

[0013] Furthermore, a guide groove is provided in the middle portion of the upper side of the guide plate.

[0014] By adopting the above technical solution, the injection molding material can be injected into the interior through the injection molding groove on the upper side.

[0015] Furthermore, pressure relief parts are fixedly installed on the upper side of the lower mold fixing plate on both sides of the lower mold plate, and sealing parts are clamped on the sides of the pressure relief parts.

[0016] By adopting the above technical solution, during internal injection molding, pressure can be released through the sealing member, thereby facilitating the flow of internal injection molding raw materials.

[0017] Furthermore, the rotating groove is a circular structure groove body, and a pair of clamping parts are symmetrically arranged inside the rotating groove.

[0018] By adopting the above technical solution, the rotation position of the upper rotating wheel can be limited, making positioning easier.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] In the utility model, by providing a structure with a top block, when the single-color casting mold is injected, the electric push rod can push the entire upper mold fixing plate downward, so that a certain gap is generated between the upper mold fixing plate and the lower mold fixing plate to facilitate the rotation of the upper mold fixing plate. When the upper mold fixing plate and the lower mold fixing plate rotate relative to each other, the injection mold is prevented from causing wear on the internal mold, thereby increasing the accuracy of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0023] Figure 3 This is a structural diagram of the lower mold fixing plate of the present utility model;

[0024] Figure 4 This is a structural diagram of the upper mold fixing plate of the present utility model;

[0025] Figure 5 This is a schematic structural diagram of the rotating wheel of the present utility model.

[0026] Explanation of the numbers in the figure: 1. Seal; 2. Mold push rod; 3. Device base; 4. Electric push rod; 5. Connecting plate; 6. Injection groove; 7. Upper mold fixing plate; 8. Lower mold fixing plate; 9. Mounting plate; 10. Guide groove; 11. Upper template; 12. Lower template; 13. Ejector block; 14. Guide groove; 15. Lifting ring; 16. Rotating groove; 17. Clamp; 18. Guide plate; 19. Pressure relief part; 20. Rotating wheel; 21. Guide column; 22. Connecting spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figure 1 - Figure 5As shown, the embodiment of the utility model provides: including a device base 3, a mounting plate 9 is fixedly mounted on the upper end of the device base 3, a lower mold fixing plate 8 is fixedly mounted on the upper end of the mounting plate 9, an upper mold fixing plate 7 is provided on the upper side of the lower mold fixing plate 8, a lower mold plate 12 is threadedly mounted on the middle part of the upper end of the lower mold fixing plate 8, a guide plate 18 is fixedly mounted on the upper end of the lower mold fixing plate 8 in front of the lower mold plate 12, and a rotation groove 16 is provided on the upper end of the lower mold fixing plate 8 at a peripheral position of the lower mold plate 12;

[0029] The upper end of the upper mold fixing plate 7 is fixedly installed with a connecting plate 5, and the middle part of the upper side of the connecting plate 5 is fixedly installed with an electric push rod 4. The lower output end of the electric push rod 4 passes through the connecting plate 5 and is fixedly installed with a top block 13. The upper end of the connecting plate 5 is located on the front and rear sides of the electric push rod 4 and is provided with an injection groove 6. The lower end of the upper mold fixing plate 7 is located on both sides of the top block 13 and is threadedly installed with a pair of upper templates 11. The lower end of the upper mold fixing plate 7 is provided with a pair of rotating wheels 20 corresponding to the rotating grooves 16. The rotating wheels 20 and the upper mold fixing plate 7 are fixedly connected by a connecting spring 22.

[0030] A plurality of mold push rods 2 are provided on the upper side of the device base 3. The upper ends of the mold push rods 2 extend into the interior of the lower template 12. The lower ends of the mold push rods 2 are connected to the demoulding device. When the mold is injected and it is time to demould, the demoulding device will push the mold push rods 2 upward, thereby lifting the mold inside the lower template 12 for demoulding.

[0031] A lifting ring 15 is fixedly installed on the rear side of the lower mold fixing plate 8, and the lower mold fixing plate 8 can be lifted and moved by the lifting ring 15 for easy transportation;

[0032] Four guide posts 21 are fixedly installed at the four corners of the lower side of the upper mold fixing plate 7, and guide grooves 10 are opened at the four corners of the upper end of the lower mold fixing plate 8 at the position of the guide posts 21. The guide grooves 10 can be used to position the lower mold fixing plate 8 and the upper mold fixing plate 7, which facilitates the alignment of the injection mold;

[0033] A guide groove 14 is provided in the middle of the upper side of the guide plate 18, and the injection molding material can be injected into the interior through the injection molding groove 6 on the upper side;

[0034] Pressure relief parts 19 are fixedly installed on both sides of the lower mold plate 12 on the upper side of the lower mold fixing plate 8. Seals 1 are installed on the side of the pressure relief parts 19. When internal injection molding is performed, pressure can be relieved through the seals 1 to facilitate the flow of internal injection molding materials.

[0035] The rotating groove 16 is a circular structure groove body. A pair of clamping members 17 are symmetrically arranged inside the rotating groove 16 to limit the rotation position of the upper rotating wheel 20 and facilitate positioning.

[0036] The working principle of the utility model is as follows: the operator sets the lower template 12 on the upper side of the lower mold fixing plate 8 by bolts, and fixes the upper template 11 on the lower side of the upper mold fixing plate 7 by bolts. Then, the guide column 21 on the lower side of the upper mold fixing plate 7 is aligned with the guide groove 10 on the upper side of the lower mold fixing plate 8, so that the lower template 12 and the upper template 11 are merged, and the feeding pipes of different colors are respectively inserted into the injection grooves 6 on the front and rear sides. The injection liquid of the front feeding pipe will enter the guide groove 14 position through the injection groove 6, and the injection liquid will be diverted to the inside of the mold push rods 2 on both sides. When the single color injection is completed, the electric push rod 4 is started to move the top block 13 downward, so that the upper mold fixing plate 7 can be pushed up. Start and rotate the upper mold fixing plate 7. At this time, the connecting spring 22 of the rotating wheel 20 on the lower side of the upper mold fixing plate 7 is subjected to reduced pressure. Under the elastic force of the connecting spring 22, the rotating wheel 20 is always set inside the rotating groove 16. The rotating wheel 20 plays a role of auxiliary rotation. The clamping member 17 can limit the rotation angle of the rotating wheel 20. When the upper mold fixing plate 7 is rotated to the specified position, the feed pipe on the rear side is rotated to the front side, and the electric push rod 4 drives the top block 13 to rise. The upper mold fixing plate 7 and the lower mold fixing plate 8 are re-clamped and fixed, so that the mold push rod 2 can be used to inject other colors. This device can avoid the wear of the internal mold by the injection molding and increase the precision of the finished product.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention.

Claims

1. A two-color mold device with cavity rotation optimization function, comprising a device base (3), characterized in that: A mounting plate (9) is fixedly mounted on the upper end of the device base (3), a lower mold fixing plate (8) is fixedly mounted on the upper end of the mounting plate (9), an upper mold fixing plate (7) is provided on the upper side of the lower mold fixing plate (8), a lower mold plate (12) is threadedly mounted on the middle portion of the upper end of the lower mold fixing plate (8), a guide plate (18) is fixedly mounted on the upper end of the lower mold fixing plate (8) located in front of the lower mold plate (12), and a rotation groove (16) is provided on the upper end of the lower mold fixing plate (8) located at a peripheral position of the lower mold plate (12); The upper end of the upper mold fixing plate (7) is fixedly mounted with a connecting plate (5), the middle part of the upper side of the connecting plate (5) is fixedly mounted with an electric push rod (4), the lower output end of the electric push rod (4) passes through the connecting plate (5) and is fixedly mounted with a top block (13), the upper end of the connecting plate (5) is located on the front and rear sides of the electric push rod (4) and is provided with an injection groove (6), the lower end of the upper mold fixing plate (7) is located on both sides of the top block (13) and is threadedly mounted with a pair of upper mold plates (11), the lower end of the upper mold fixing plate (7) is provided with a pair of rotating wheels (20) corresponding to the rotating grooves (16), and the rotating wheels (20) and the upper mold fixing plate (7) are fixedly connected by a connecting spring (22).

2. The two-color mold device with cavity rotation optimization function according to claim 1, characterized in that: A plurality of mold push rods (2) are provided on the upper side of the device base (3), the upper ends of the mold push rods (2) extend to the interior of the lower template (12), and the lower ends of the mold push rods (2) are connected to the demoulding device.

3. The two-color mold device with cavity rotation optimization function according to claim 1, characterized in that: A lifting ring (15) is fixedly mounted on the rear side of the lower mold fixing plate (8).

4. The two-color mold device with cavity rotation optimization function according to claim 1, characterized in that: Four guide columns (21) are fixedly installed at the four lower corners of the upper mold fixing plate (7), and guide grooves (10) are opened at the four upper corners of the lower mold fixing plate (8) at the positions of the guide columns (21).

5. The two-color mold device with cavity rotation optimization function according to claim 1, characterized in that: A guide groove (14) is provided in the middle portion of the upper side of the guide plate (18).

6. The two-color mold device with cavity rotation optimization function according to claim 1, characterized in that: Pressure relief components (19) are fixedly installed on both sides of the lower mold fixing plate (8) and the lower mold plate (12). Sealing components (1) are mounted on the sides of the pressure relief components (19).

7. The two-color mold device with cavity rotation optimization function according to claim 1, characterized in that: The rotating groove (16) is a circular structure groove body, and a pair of clamping parts (17) are symmetrically arranged inside the rotating groove (16).

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