Circulating leakage-proof double-color injection mold and injection molding method thereof

Abstract

The invention relates to the technical field of injection molding equipment, and discloses a circulating leakage-proof double-color injection mold which comprises a main body, two mold plates are fixedly connected to the right side of the main body, and molds are fixedly connected to the sides, away from the main body, of the mold plates. According to the device, during expansion, a rubber ring can be extruded through a rotating plate, so that the rubber ring is tightly attached between molds, compared with a traditional sealing mode, the device can enable the rubber ring to be tightly attached between the two molds during injection molding, in addition, after injection molding is completed, a sliding plate can ascend, the rubber ring is separated from the molds and enters a fixed cover, and the rubber ring is tightly attached between the molds. And the situation that the sealing performance is reduced after long-time use, so that a glue collecting line is obvious or leaks during injection molding, and the attractiveness and the quality of a product are influenced can be avoided.

Description

Technical Field

[0001] This invention relates to the field of injection molding equipment technology, specifically to a circulating leak-proof two-color injection mold and its injection method. Background Technology

[0002] Injection molds are tools for producing plastic products, and also tools for giving plastic products a complete structure and precise dimensions. Injection molding is a processing method used for mass production of certain complex-shaped parts. Specifically, it refers to injecting heated and molten plastic into the mold cavity under high pressure by an injection molding machine, and obtaining the molded product after cooling and solidification. During injection molding, it is necessary to prevent melt leakage. Generally, existing injection molds prevent leakage by installing a sealing ring on the mold cover, which achieves a sealing effect through the closure between the molds. Since the sealing ring of the existing device is basically fixed to the mold, when the mold is used for a long time, due to extrusion wear, thermal expansion and contraction, etc., it may wear or deform, affecting its sealing performance, resulting in obvious glue lines or melt leakage after injection molding. Summary of the Invention

[0003] The purpose of this invention is to provide a recirculating leak-proof two-color injection mold and its injection method to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a circulating, leak-proof, two-color injection mold, comprising a main body, two mold plates fixedly connected to the right side of the main body, and a mold fixedly connected to the side of the mold plate away from the main body, and further comprising... The injection molding mechanism includes four fixed rods slidably connected to the side wall of the mold plate. The end of the four fixed rods away from the main body is fixedly connected to the upper mold plate. The side of the upper mold plate close to the fixed rods is fixedly connected to the inclined plate. The two inclined plates are arranged in opposite directions. The outer surface of the four fixed rods is slidably connected to the upper mold body. The side of the upper mold body close to the upper mold plate is fixedly connected to the upper mold plate. The four springs are located on the outer surface of the fixed rods. The upper mold body has a circular cavity inside. The front of the upper mold body has an air inlet hole that communicates with the circular cavity. The side wall of the upper mold body has a square groove. The fixing mechanism includes a fixing cover fixedly connected to the side of the upper mold body away from the inclined plate, and the inner wall of the fixing cover away from the upper mold body has several rectangular grooves. The auxiliary mechanism includes a sloping block that is slidably connected inside a square groove. A rack is fixedly connected to the bottom of the sloping block. The rack passes through the inner wall of the top of the fixed cover and extends into the interior. A gear shaft is meshed with the outer surface of the extended end of the rack. Five arc-shaped support plates are provided at the bottom of the rack.

[0005] Furthermore, five arc-shaped support plates are fixedly connected to the side wall of the upper mold body on the side closest to the upper mold body. A threaded sleeve is rotatably connected between two arc-shaped support plates. A toothed ring is rotatably connected inside the five threaded sleeves. The top outer wall of the toothed ring is meshed with the toothed shaft. Several round blocks are fixedly connected to the side of the toothed ring closest to the T-shaped groove. The round blocks are inserted into the threaded groove inside the threaded sleeve. The outer surface of the threaded sleeve is convex.

[0006] Furthermore, the Z-shaped plate is equipped with a sealing mechanism, which includes a sliding plate slidably connected inside the T-shaped groove. A return spring is fixedly connected between the sliding plate and the T-shaped groove. An inclined plate is rotatably connected to both the left and right sides of the sliding plate. A movable plate is rotatably connected to the side of the inclined plate away from the sliding plate. A rotating plate is rotatably connected to the side of the movable plate away from the inclined plate. Rubber rings are slidably connected to the sides of several rotating plates away from the sliding plate. A compression spring is fixedly connected between two movable plates.

[0007] Furthermore, the interior of the fixed cover is provided with a reinforcing mechanism, which includes an L-plate fixedly connected to one end of the sliding plate near the rotating plate. Two positioning rods are fixedly connected to the top inner wall of the L-plate, and T-shaped plates are slidably connected to the outer surfaces of the two positioning rods.

[0008] Furthermore, a return spring is fixedly connected to the positioning rod on the bottom surface of the T-shaped plate. A telescopic plate is fixedly connected to the bottom of the T-shaped plate. A camshaft is provided on the side of the T-shaped plate away from the telescopic plate. The camshaft is in contact with the T-shaped plate. The end of the camshaft near the L-plate passes through the side wall of the L-plate and extends to the outside. Two pull plates are rotatably connected to the extended end of the camshaft. The end of the pull plate away from the camshaft is rotatably connected to the side wall of the movable plate.

[0009] Furthermore, a rotating mechanism is provided inside the fixed cover. The rotating mechanism includes a rotating disk rotatably connected to the inner wall of the circular cavity near the fixed cover. Several flat plates are fixedly connected to the side of the rotating disk away from the fixed cover. Several inner cylinders are provided on the outer surface of the rotating disk. The several inner cylinders are arranged in a circular array around the rotating disk. The outer surface of the inner cylinders is in contact with the outer surface of the rotating disk.

[0010] Furthermore, the end of the inner cylinder away from the flat plate penetrates through the outer wall of the upper mold body and extends into the interior of the fixed cover. A protruding rod is fixedly connected to the outer surface of the extended end of the inner cylinder, and a bidirectional threaded sleeve is slidably connected to the outer surface of the protruding rod. A hollow disc is rotatably connected to the side of the bidirectional threaded sleeve away from the rotating disk. The inner wall of the hollow disc is vortex-shaped, and the side of the inner cylinder near the rotating disk is open. Several air vents are opened on the outer surface of the hollow disc.

[0011] Furthermore, the interior of the fixed cover is provided with a striking mechanism, which includes several Z-shaped plates fixedly connected to the side wall of the upper mold body inside the fixed cover. The outer surface of the Z-shaped plates is provided with an arc plate, and the interior of the Z-shaped plates is rotatably connected with a rotating rod. The end of the arc plate near the rotating rod is fixedly connected to the side wall of the bidirectional threaded sleeve, and the end of the arc plate away from the bidirectional threaded sleeve passes through the side wall of the Z-shaped plate and extends to the outside. The extended end of the arc plate is slidably connected to a sliding sleeve.

[0012] Furthermore, a rotating shaft is provided inside the Z-shaped plate. The rotating shaft is slidably connected inside the sliding sleeve. The end of the rotating shaft away from the rotating rod passes through the side wall of the upper mold body and extends into the interior of the circular cavity. The outer surface of the extended end of the rotating shaft contacts the outer surface of the rotating disk. A C-shaped plate is fixedly connected to the end of the rotating shaft near the rotating rod. An L-shaped plate is rotatably connected to the outer surface of the sliding sleeve. The middle part of the L-shaped plate is rotatably connected to the outer surface of the arc-shaped plate. A C-shaped plate is slidably connected inside the arc-shaped plate. The end of the L-shaped plate away from the sliding sleeve is slidably connected to the side wall of the C-shaped plate. A connecting plate is fixedly connected to the side of the C-shaped plate away from the sliding sleeve. The side of the connecting plate away from the C-shaped plate is rotatably connected to the outer surface of the rotating rod. A striking rod is fixedly connected to the side of the rotating rod away from the C-shaped plate.

[0013] Furthermore, an injection molding method for a recirculating leak-proof two-color injection mold includes the following steps: S1: First, connect the two upper mold top plates to the two different colored injection ports on the injection molding machine. At the same time, connect the main body to the rotary motor on the injection molding machine. Then, during injection, the injection molding machine drives the injection mechanism to move towards the main body, so that the upper mold top plates squeeze the upper mold body. S2: Close the mold plate and the upper mold body, insert the mold into the middle of the fixed cover. After the upper mold body and the mold plate are closed, the liquid to be injected is injected into the mold through the injection molding machine. After the injection is completed, the main body is rotated by the motor on the injection molding machine. S3: Then close the mold plate and the upper mold body again and perform a second injection on the basis of the first injection to complete the two-color injection molding.

[0014] The present invention has the following beneficial effects: 1. In this invention, when the injection molding machine extrudes the upper mold body through the upper mold top plate, the inclined plate passes through the square groove. Since the end of the inclined plate near the upper mold body is inclined, when the inclined plate passes through the square groove, the square groove passes through the inclined groove block and compresses the inclined groove block. After being compressed, the inclined groove block moves downward inside the square groove. When the inclined groove block moves downward, it drives the gear shaft to rotate through the rack. When the gear shaft rotates, it drives the gear ring to rotate. When the gear ring rotates, it drives the threaded sleeve to rotate through the round block on the side wall. When the threaded sleeve rotates, the protrusions on the surface of the threaded sleeve compress the sliding plate. After being compressed, the sliding plate slides inside the T-groove. When the sliding plate slides... During injection molding, the rubber ring adheres to the gap between the two molds. As the sliding plate moves downward, it presses against the movable plate via the inclined plate, causing the two movable plates to expand outward. During this expansion, the rotating plate also presses against the rubber ring, ensuring it adheres tightly to the molds. Compared to traditional sealing methods, this device ensures the rubber ring remains firmly attached between the two molds during injection molding. Furthermore, after injection molding is complete, the sliding plate rises, detaching the rubber ring from the mold and placing it inside the fixed cover. This prevents a decline in sealing performance over prolonged use, which could lead to noticeable glue lines or leaks during injection molding, affecting the product's appearance and quality.

[0015] 2. In this invention, when the sliding plate moves downward, it presses against the movable plate via the inclined plate. After being pressed, the movable plate rotates relative to the rotating plate. When the movable plate rotates, it can pull the camshaft to rotate via the pull plate. When the camshaft rotates, it presses against the T-shaped plate, causing the T-shaped plate to slide downward on the two positioning rods. When the T-shaped plate moves downward, it causes the telescopic plate to adhere to the upper surface of the rubber ring and press against the rubber ring. This ensures that the rubber ring maintains a stable sealing state during the injection molding process, making the internal stress distribution more uniform, reducing the risk of stress concentration and fatigue failure, thereby enhancing the sealing effect and reducing the risk of leakage during the injection molding process.

[0016] 3. In this invention, after the mold plate and upper mold body are closed, the air inlet is connected to the external cooling pump body and enters the interior of the circular cavity. When the high-pressure cold gas generated by the pump body enters the interior of the circular cavity, the high-pressure gas blows towards the flat plate. When the flat plate is blown by the gas, it drives the rotating disk to rotate. When the rotating disk rotates, it can drive multiple inner cylinders to rotate through the outer surface. When the inner cylinders rotate, they contact the threaded groove inside the bidirectional threaded sleeve through the protrusion and drive the bidirectional threaded sleeve and the hollow disk to reciprocate. At this time, the arc plate can restrict the axial rotation of the bidirectional threaded sleeve. Then, the high-pressure cold gas will enter the interior of the hollow disk through the inner cylinder, and then the gas will... The impact on the vortex inside the hollow disc causes it to rotate on the bidirectional threaded sleeve. As the hollow disc rotates, gas is ejected from the vent holes on its outer surface. When the bidirectional threaded sleeve moves back and forth due to the rotation of the inner cylinder and is cooled by the cold air ejected from the hollow disc, the reciprocating movement of the rotating hollow disc and the bidirectional threaded sleeve ensures that every corner inside the fixed cover receives sufficient and uniform cooling of the solution in the mold in the center of the fixed cover during injection molding. This avoids localized overheating, thereby reducing product deformation and internal defects. At the same time, uniform cooling also helps the injection molded product reach the required hardness more quickly, thus shortening the production cycle.

[0017] 4. In this invention, when the rotating disk rotates, it drives multiple rotating shafts to rotate. When the rotating shafts rotate, they drive the second arc-shaped plate to rotate. When the bidirectional threaded sleeve moves, it drives the arc-shaped plate to move. When the arc-shaped plate moves, it drives the sliding sleeve to slide on the surface of the rotating shaft. When the sliding sleeve slides, it pushes the C-shaped plate through the second L-plate, causing the C-shaped plate to drive the connecting plate to rotate on the rotating rod, so that a certain angle is formed between the connecting plate and the rotating shaft. Then, when the rotating shaft rotates, it drives the rotating rod to rotate back and forth through the connecting plate. When the rotating rod rotates, it drives the striking rod to strike the inner wall of the fixed cover. The vibration generated by the striking can promote the flow of liquid material in the fixed cover and the mold, reduce the air bubbles and defects generated inside, make the material distribution more uniform, and improve the density and overall quality of the product.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall partial structure of the present invention; Figure 3 This is a schematic diagram of the injection molding mechanism of the present invention; Figure 4 This is a schematic diagram of the fixing mechanism structure of the present invention; Figure 5 This is a schematic diagram of the auxiliary mechanism structure of the present invention; Figure 6 This is a schematic diagram of the sealing mechanism of the present invention; Figure 7 This is a schematic diagram of the striking mechanism of the present invention; Figure 8 This is a schematic diagram of the rotating mechanism of the present invention; Figure 9 This is an exploded view of the rotating mechanism of the present invention; Figure 10 for Figure 8 Enlarged view of point A in the middle; Figure 11 This is a flowchart of the injection molding method of the present invention.

[0021] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Main body; 101. Mold plate; 102. Mold; 2. Injection mechanism; 201. Upper mold top plate; 202. Inclined plate; 203. Fixed roller; 204. Upper mold body; 205. Circular cavity; 206. Air inlet; 207. Square groove; 3. Auxiliary mechanism; 301. Inclined groove block; 302. Rack; 303. Arc-shaped support plate; 304. Gear ring; 305. Gear shaft; 306. Threaded sleeve; 4. Sealing mechanism; 401. Sliding plate; 402. Inclined plate II; 403. Movable plate; 404. Rotating plate; 405. Rubber ring; 5. Reinforcing mechanism; 501. L-plate; 50 2. Camshaft; 503. Pull plate; 504. Positioning rod; 505. T-shaped plate; 506. Telescopic plate; 6. Rotating mechanism; 601. Rotating disk; 602. Flat plate; 603. Inner cylinder; 604. Protruding rod; 605. Bidirectional threaded sleeve; 606. Hollow disk; 7. Striking mechanism; 701. Z-shaped plate; 702. Arc plate; 703. Sliding sleeve; 704. Rotating shaft; 705. L-shaped plate II; 706. Arc plate II; 707. C-shaped plate; 708. Connecting plate; 709. Rotating rod; 710. Striking rod; 8. Fixing mechanism; 801. Fixing cover; 802. T-slot. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-10 As shown, the present invention is a circulating leak-proof two-color injection mold, including a main body 1, two mold plates 101 fixedly connected to the right side of the main body 1, and a mold 102 fixedly connected to the side of the mold plate 101 away from the main body 1, and also including... The injection molding mechanism 2 includes four fixed rods 203 slidably connected to the side wall of the mold plate 101. The end of the four fixed rods 203 away from the main body 1 is fixedly connected to the upper mold top plate 201. The side of the upper mold top plate 201 near the fixed rods 203 is fixedly connected to the inclined plate 202. The two inclined plates 202 are arranged in opposite directions. The outer surface of the four fixed rods 203 is slidably connected to the upper mold body 204. The side of the upper mold body 204 near the upper mold top plate 201 is fixedly connected to the four springs. The four springs are located on the outer surface of the fixed rods 203. The interior of the upper mold body 204 has a circular cavity 205. The front of the upper mold body 204 has an air inlet 206. The air inlet 206 is connected to the circular cavity 205. The side wall of the upper mold body 204 has a square groove 207. The fixing mechanism 8 includes a fixing cover 801 fixedly connected to the side of the upper mold body 204 away from the inclined plate 202. The inner wall of the fixing cover 801 away from the upper mold body 204 has a plurality of rectangular grooves. Auxiliary mechanism 3 includes a sloping groove block 301 slidably connected inside the square groove 207. A rack 302 is fixedly connected to the bottom of the sloping groove block 301. The rack 302 passes through the inner wall of the top of the fixed cover 801 and extends into the interior. A gear shaft 305 is meshed with the outer surface of the extended end of the rack 302. Five arc-shaped support plates 303 are provided at the bottom of the rack 302. When the injection molding machine extrudes through the upper mold top plate 201 to extrude the upper mold body 204, the sloping plate 202 will pass through the square groove 207. Since the end of the sloping plate 202 near the upper mold body 204 is inclined, when the sloping plate 202 passes through the square groove 207, the square groove 207 will pass through the sloping groove block 301.

[0024] Furthermore, five arc-shaped support plates 303 are fixedly connected to the side wall of the upper mold body 204 near one side of the upper mold body 204. A threaded sleeve 306 is rotatably connected between two arc-shaped support plates 303. A toothed ring 304 is rotatably connected inside the five threaded sleeves 306. The top outer wall of the toothed ring 304 is meshed with the toothed shaft 305. Several round blocks are fixedly connected to the side of the toothed ring 304 near the T-shaped groove 802. The round blocks are inserted into the threaded grooves inside the threaded sleeves 306. The outer surface of the threaded sleeves 306 is convex and presses the inclined groove block 301. After being pressed, the inclined groove block 301 moves downward inside the square groove 207. When the inclined groove block 301 moves downward, it drives the toothed shaft 305 to rotate through the rack 302. When the toothed shaft 305 rotates, it drives the toothed ring 304 to rotate.

[0025] Furthermore, a sealing mechanism 4 is provided inside the Z-shaped plate 701. The sealing mechanism 4 includes a sliding plate 401 slidably connected inside the T-shaped groove 802. A return spring is fixedly connected between the sliding plate 401 and the T-shaped groove 802. Inclined plates 402 are rotatably connected to both the left and right sides of the sliding plate 401. A movable plate 403 is rotatably connected to the side of the inclined plate 402 away from the sliding plate 401. A rotating plate 404 is rotatably connected to the side of the movable plate 403 away from the inclined plate 402. Several rotating plates 404... A rubber ring 405 is slidably connected to the side away from the sliding plate 401. A compression spring is fixedly connected between the two movable plates 403. When the toothed ring 304 rotates, it can drive the threaded sleeve 306 to rotate through the round block on the side wall. When the threaded sleeve 306 rotates, the protrusions on the surface of the threaded sleeve 306 will squeeze the sliding plate 401. After being squeezed, the sliding plate 401 will slide inside the T-groove 802. When the sliding plate 401 slides, the rubber ring 405 will fit into the gap between the two molds.

[0026] Furthermore, the interior of the fixed cover 801 is provided with a reinforcing mechanism 5. The reinforcing mechanism 5 includes an L-plate 501 fixedly connected to one end of the sliding plate 401 near the rotating plate 404. Two positioning rods 504 are fixedly connected to the top inner wall of the L-plate 501. T-shaped plates 505 are slidably connected to the outer surfaces of the two positioning rods 504. When the sliding plate 401 moves downward, the downward sliding plate 401 will press the movable plate 403 through the inclined plate 402. After being pressed, the movable plate 403 will rotate relative to the rotating plate 404. When the movable plate 403 rotates, it can pull the camshaft 502 to rotate through the pull plate 503. When the camshaft 502 rotates, it will press the T-shaped plate 505.

[0027] Furthermore, a return spring is fixedly connected to the positioning rod 504 on the bottom surface of the T-shaped plate 505. A telescopic plate 506 is fixedly connected to the bottom of the T-shaped plate 505. A camshaft 502 is provided on the side of the T-shaped plate 505 away from the telescopic plate 506. The camshaft 502 is in contact with the T-shaped plate 505. The end of the camshaft 502 near the L-plate 501 passes through the side wall of the L-plate 501 and extends to the outside. Two pull plates 503 are rotatably connected to the extended end of the camshaft 502. The end of the pull plate 503 away from the camshaft 502 is rotatably connected to the side wall of the movable plate 403, so that the T-shaped plate 505 slides downward on the two positioning rods 504. When the T-shaped plate 505 moves downward, the moving T-shaped plate 505 will cause the telescopic plate 506 to adhere to the upper surface of the rubber ring 405 and squeeze the rubber ring 405.

[0028] Furthermore, a rotating mechanism 6 is provided inside the fixed cover 801. The rotating mechanism 6 includes a rotating disk 601 rotatably connected to the inner wall of the circular cavity 205 near the fixed cover 801. Several flat plates 602 are fixedly connected to the side of the rotating disk 601 away from the fixed cover 801. Several inner cylinders 603 are provided on the outer surface of the rotating disk 601. The several inner cylinders 603 are arranged in a circumferential array with the rotating disk 601 as the center. The outer surface of the inner cylinders 603 is in contact with the outer surface of the rotating disk 601. High-pressure gas will blow towards the flat plates 602. When the flat plates 602 are blown by the gas, they will drive the rotating disk 601 to rotate. When the rotating disk 601 rotates, it can drive the multiple inner cylinders 603 to rotate through the outer surface. When the inner cylinders 603 rotate, they will contact the threaded groove inside the bidirectional threaded sleeve 605 through the protruding rod 604, and then drive the bidirectional threaded sleeve 605 and the hollow disk 606 to reciprocate.

[0029] Furthermore, the end of the inner cylinder 603 away from the flat plate 602 extends through the outer wall of the upper mold body 204 and into the interior of the fixed cover 801. A protruding rod 604 is fixedly connected to the outer surface of the extended end of the inner cylinder 603, and a bidirectional threaded sleeve 605 is slidably connected to the outer surface of the protruding rod 604. A hollow disk 606 is rotatably connected to the side of the bidirectional threaded sleeve 605 away from the rotating disk 601. The inner wall of the hollow disk 606 is vortex-shaped, and the side of the inner cylinder 603 near the rotating disk 601 is open. Several air outlets are opened on the outer surface of the hollow disk 606. At this time, the arc plate 702 can restrict the axial rotation of the bidirectional threaded sleeve 605. Then, high-pressure cold air will enter the interior of the hollow disk 606 through the inner cylinder 603. Then, the gas will impact the vortex-shaped interior of the hollow disk 606, causing the hollow disk 606 to rotate on the bidirectional threaded sleeve 605. Then, when the hollow disk 606 rotates...

[0030] Furthermore, a striking mechanism 7 is provided inside the fixed cover 801. The striking mechanism 7 includes several Z-shaped plates 701 fixedly connected to the side wall of the upper mold body 204 located inside the fixed cover 801. An arc plate 702 is provided on the outer surface of the Z-shaped plate 701. A rotating rod 709 is rotatably connected inside the Z-shaped plate 701. One end of the arc plate 702 near the rotating rod 709 is fixedly connected to the side wall of the bidirectional threaded sleeve 605. The other end of the arc plate 702 away from the bidirectional threaded sleeve 605 passes through the side wall of the Z-shaped plate 701 and extends to the outside. A sliding sleeve 703 is slidably connected to the extended end of the arc plate 702. When the rotating disk 601 rotates, the rotating disk 601 will drive multiple rotating shafts 704 to rotate. When the rotating shafts 704 rotate, they will drive the arc plate 706 to rotate. And when the bidirectional threaded sleeve 605 moves, it will drive the arc plate 702 to move.

[0031] Furthermore, a rotating shaft 704 is provided inside the Z-shaped plate 701. The rotating shaft 704 is slidably connected inside the sliding sleeve 703. The end of the rotating shaft 704 away from the rotating rod 709 passes through the side wall of the upper mold body 204 and extends into the interior of the circular cavity 205. The outer surface of the extended end of the rotating shaft 704 contacts the outer surface of the rotating disk 601. A C-shaped plate 707 is fixedly connected to the end of the rotating shaft 704 near the rotating rod 709. An L-shaped plate 705 is rotatably connected to the outer surface of the sliding sleeve 703. The middle part of the L-shaped plate 705 is rotatably connected to the outer surface of the arc-shaped plate 706. A C-shaped plate 707 is slidably connected inside the arc-shaped plate 706. The end of the L-shaped plate 705 away from the sliding sleeve 703 is slidably connected to the side of the C-shaped plate 707. A connecting plate 708 is fixedly connected to the side of the C-shaped plate 707 away from the sliding sleeve 703. The side of the connecting plate 708 away from the C-shaped plate 707 is rotatably connected to the outer surface of the rotating rod 709. A striking rod 710 is fixedly connected to the side of the rotating rod 709 away from the C-shaped plate 707. When the arc plate 702 moves, it will drive the sliding sleeve 703 to slide on the surface of the rotating shaft 704. When the sliding sleeve 703 slides, it will push the C-shaped plate 707 through the L-plate 705, so that the C-shaped plate 707 drives the connecting plate 708 to rotate on the rotating rod 709, so that the connecting plate 708 and the rotating shaft 704 form a certain angle. Then, when the rotating shaft 704 rotates, it will drive the rotating rod 709 to rotate back and forth through the connecting plate 708.

[0032] Furthermore, an injection molding method for a recirculating leak-proof two-color injection mold includes the following steps: S1: First, connect the two upper mold top plates 201 to the two different colored injection ports on the injection molding machine. At the same time, connect the main body 1 to the rotary motor on the injection molding machine. Then, during injection, the injection molding machine drives the injection mechanism 2 to move towards the main body 1, so that the upper mold top plates 201 squeeze the upper mold body 204. S2: Close the mold plate 101 with the upper mold body 204, and insert the mold 102 into the middle of the fixed cover 801. After the upper mold body 204 and the mold plate 101 are closed, the liquid to be injected is injected into the mold 102 by the injection molding machine. After the injection is completed, the main body 1 is rotated by the motor on the injection molding machine. S3: Then, close the mold plate 101 and the upper mold body 204 again and perform a second injection on the basis of the first injection to complete the two-color injection molding.

[0033] In use, first connect the two upper mold top plates (201) to the two different colored injection ports on the injection molding machine, and at the same time connect the main body (1) to the rotary motor on the injection molding machine. Then, during injection, the injection molding machine drives the injection mechanism (2) to move towards the main body (1), so that the upper mold top plate (201) squeezes the upper mold body (204), so that the mold plate (101) and the upper mold body (204) close, and the mold (102) is inserted into the middle of the fixed cover (801). After the upper mold body (204) and the mold plate (101) are closed, the liquid to be injected is injected into the mold (102) by the injection molding machine. After the injection is completed, the motor on the injection molding machine drives the main body (1) to rotate, and then the mold plate (101) and the upper mold body (204) are closed again, and a second injection is performed on the basis of the first injection, so as to complete the two-color injection molding. When the injection molding machine extrudes the upper mold body 204 through the upper mold top plate 201, the inclined plate 202 passes through the square groove 207. Since the end of the inclined plate 202 near the upper mold body 204 is inclined, when the inclined plate 202 passes through the square groove 207, the square groove 207 passes through the inclined groove block 301 and extrudes the inclined groove block 301. After being extruded, the inclined groove block 301 moves downward inside the square groove 207. When the inclined groove block 301 moves downward, it drives the gear shaft 305 to rotate through the rack 302. When the gear shaft 305 rotates, it drives the gear ring 304 to rotate. When the gear ring 304 rotates, it drives the threaded sleeve 306 to rotate through the round block on the side wall. When the threaded sleeve 306 rotates, since the protrusions on the threaded sleeve 306 are in contact with the sliding plate 401, the protrusions on the surface of the threaded sleeve 306 will extrude and compress the sliding plate 401. The sliding plate 401 is subjected to compression. After pressing, it slides inside the T-groove 802. When the sliding plate 401 slides, the rubber ring 405 fits into the gap between the two molds. Then, when the sliding plate 401 moves down, it will squeeze the movable plate 403 through the inclined plate 2 402, causing the two movable plates 403 to expand outward. During the expansion, the rotating plate 404 will also squeeze the rubber ring 405, making the rubber ring 405 fit tightly between the molds. Compared with the traditional sealing method, this device can make the rubber ring 405 fit tightly between the two molds during injection molding. In addition, after the injection molding is completed, the sliding plate 401 will rise, causing the rubber ring 405 to detach from the mold and enter the fixed cover 801. This can avoid the decrease in sealing performance under long-term use, which may lead to obvious glue lines or leakage during injection molding, affecting the appearance and quality of the product.When the sliding plate 401 moves downward, it presses the movable plate 403 against the inclined plate 402. After being pressed, the movable plate 403 rotates relative to the rotating plate 404. When the movable plate 403 rotates, it can pull the camshaft 502 to rotate via the pull plate 503. When the camshaft 502 rotates, it presses the T-shaped plate 505, causing the T-shaped plate 505 to slide downward on the two positioning rods 504. When the T-shaped plate 505 moves downward, it causes the telescopic plate 506 to fit against the upper surface of the rubber ring 405 and press the rubber ring 405. This ensures that the rubber ring maintains a stable sealing state during the injection molding process, making the internal stress distribution more uniform, reducing the risk of stress concentration and fatigue failure, thereby enhancing the sealing effect and reducing the risk of leakage during the injection molding process. After the mold plate 101 and the upper mold body 204 are closed, the air inlet 206 is connected to the external cooling pump body and enters the interior of the circular cavity 205. When the high-pressure cold gas generated by the pump body enters the interior of the circular cavity 205, the high-pressure gas blows towards the plate 602. When the plate 602 is blown by the gas, it drives the rotating disk 601 to rotate. When the rotating disk 601 rotates, it can drive multiple inner cylinders 603 to rotate through its outer surface. When the inner cylinders 603 rotate, they contact the threaded groove inside the bidirectional threaded sleeve 605 through the protrusion 604, which drives the bidirectional threaded sleeve 605 and the hollow disk 606 to reciprocate. At this time, the arc plate 702 can restrict the axial rotation of the bidirectional threaded sleeve 605. Then, the high-pressure cold gas will enter the interior of the hollow disk 606 through the inner cylinder 603. Then, the gas impacts the vortex inside the hollow disc 606, causing the hollow disc 606 to rotate on the bidirectional threaded sleeve 605. As the hollow disc 606 rotates, the gas is ejected from the vent holes on its outer surface. When the bidirectional threaded sleeve 605 moves back and forth due to the rotation of the inner cylinder 603 and is cooled by the cold gas ejected from the hollow disc 606, the reciprocating movement of the rotating hollow disc 606 and the bidirectional threaded sleeve 605 ensures that every corner inside the fixed cover 801 is sufficiently and uniformly cooled during injection molding, avoiding local overheating and reducing product deformation and internal defects. At the same time, uniform cooling also helps the injection molded product reach the required hardness more quickly, thereby shortening the production cycle.When the rotating disk 601 rotates, it drives multiple rotating shafts 704 to rotate. The rotating shafts 704, in turn, drive the arc-shaped plate 706 to rotate. Furthermore, when the bidirectional threaded sleeve 605 moves, it drives the arc-shaped plate 702 to move. The movement of the arc-shaped plate 702 causes the sliding sleeve 703 to slide on the surface of the rotating shaft 704. As the sliding sleeve 703 slides, it pushes the C-shaped plate 707 through the L-shaped plate 705, causing the C-shaped plate 707 to drive the connecting plate 708 on the rotating rod 709. The connecting plate 708 is rotated so that a certain angle is formed between the connecting plate 708 and the rotating shaft 704. When the rotating shaft 704 rotates, it will drive the rotating rod 709 to rotate back and forth through the connecting plate 708. When the rotating rod 709 rotates, it will drive the striking rod 710 to strike the inner wall of the fixed cover 801. The vibration generated by the striking can promote the flow of liquid material in the fixed cover 801 and the mold 102, reduce the bubbles and defects generated inside, make the material distribution more uniform, and improve the density and overall quality of the product.

[0034] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A circulating leak-proof two-color injection mold, comprising a main body (1), wherein two mold plates (101) are fixedly connected to the right side of the main body (1), and a mold (102) is fixedly connected to the side of the mold plate (101) away from the main body (1), characterized in that, It also includes, The injection molding mechanism (2) includes four fixed rods (203) slidably connected to the side wall of the mold plate (101). The four fixed rods (203) are fixedly connected to an upper mold plate (201) at the end away from the main body (1). An inclined plate (202) is fixedly connected to the side of the upper mold plate (201) near the fixed rods (203). The two inclined plates (202) are arranged opposite to each other. An upper mold body (204) is slidably connected to the outer surface of the four fixed rods (203). Four springs are fixedly connected to the side of the upper mold body (204) near the upper mold plate (201). The four springs are located on the outer surface of the fixed rods (203). A circular cavity (205) is opened inside the upper mold body (204). An air inlet (206) is opened on the front of the upper mold body (204). The air inlet (206) is connected to the circular cavity (205). A square groove (207) is opened on the side wall of the upper mold body (204). The fixing mechanism (8) includes a fixing cover (801) fixedly connected to the side of the upper mold body (204) away from the inclined plate (202). The inner wall of the fixing cover (801) away from the upper mold body (204) has a plurality of rectangular grooves. The auxiliary mechanism (3) includes a sloping groove block (301) slidably connected inside the square groove (207). A rack (302) is fixedly connected to the bottom of the sloping groove block (301). The rack (302) extends through the inner wall of the top of the fixed cover (801) and into the interior. A gear shaft (305) is meshed with the outer surface of the extended end of the rack (302). Five arc-shaped support plates (303) are provided at the bottom of the rack (302).

2. The circulating leak-proof two-color injection mold according to claim 1, characterized in that: Five of the arc-shaped support plates (303) are fixedly connected to the side wall of the upper mold body (204) on the side near the upper mold body (204). A threaded sleeve (306) is rotatably connected between two of the arc-shaped support plates (303). A toothed ring (304) is rotatably connected inside the five threaded sleeves (306). The top outer wall of the toothed ring (304) is meshed with the toothed shaft (305). Several round blocks are fixedly connected to the side of the toothed ring (304) near the T-shaped groove (802). The round blocks are inserted into the threaded groove inside the threaded sleeve (306). The outer surface of the threaded sleeve (306) is convex.

3. The circulating leak-proof two-color injection mold according to claim 2, characterized in that: The Z-shaped plate (701) is provided with a sealing mechanism (4). The sealing mechanism (4) includes a sliding plate (401) that is slidably connected inside the T-shaped groove (802). A return spring is fixedly connected between the sliding plate (401) and the T-shaped groove (802). An inclined plate (402) is rotatably connected to both the left and right sides of the sliding plate (401). A movable plate (403) is rotatably connected to the side of the inclined plate (402) away from the sliding plate (401). A rotating plate (404) is rotatably connected to the side of the movable plate (403) away from the inclined plate (402). A rubber ring (405) is slidably connected to the side of several rotating plates (404) away from the sliding plate (401). A compression spring is fixedly connected between two movable plates (403).

4. A circulating leak-proof two-color injection mold according to claim 3, characterized in that: The fixed cover (801) is provided with a reinforcement mechanism (5). The reinforcement mechanism (5) includes an L plate (501) fixedly connected to one end of the sliding plate (401) near the rotating plate (404). Two positioning rods (504) are fixedly connected to the top inner wall of the L plate (501), and T-shaped plates (505) are slidably connected to the outer surfaces of the two positioning rods (504).

5. A circulating leak-proof two-color injection mold according to claim 4, characterized in that: The positioning rod (504) is fixedly connected to the bottom surface of the T-shaped plate (505) with a return spring 2. The bottom of the T-shaped plate (505) is fixedly connected to a telescopic plate (506). A camshaft (502) is provided on the side of the T-shaped plate (505) away from the telescopic plate (506). The camshaft (502) is in contact with the T-shaped plate (505). The end of the camshaft (502) near the L-plate (501) passes through the side wall of the L-plate (501) and extends to the outside. The extended end of the camshaft (502) is rotatably connected to two pull plates (503). The end of the pull plate (503) away from the camshaft (502) is rotatably connected to the side wall of the movable plate (403).

6. A circulating leak-proof two-color injection mold according to claim 5, characterized in that: The fixed cover (801) is provided with a rotating mechanism (6). The rotating mechanism (6) includes a rotating disk (601) rotatably connected to the inner wall of the circular cavity (205) near the fixed cover (801). Several flat plates (602) are fixedly connected to the side of the rotating disk (601) away from the fixed cover (801). Several inner cylinders (603) are provided on the outer surface of the rotating disk (601). The several inner cylinders (603) are arranged in a circumferential array with the rotating disk (601) as the center. The outer surface of the inner cylinders (603) is in contact with the outer surface of the rotating disk (601).

7. A circulating leak-proof two-color injection mold according to claim 6, characterized in that: The inner cylinder (603) extends through the outer wall of the upper mold body (204) and into the interior of the fixed cover (801) at the end away from the flat plate (602). A protruding rod (604) is fixedly connected to the outer surface of the extended end of the inner cylinder (603). A bidirectional threaded sleeve (605) is slidably connected to the outer surface of the protruding rod (604). A hollow disk (606) is rotatably connected to the side of the bidirectional threaded sleeve (605) away from the rotating disk (601). The inner wall of the hollow disk (606) is vortex-shaped. The side of the inner cylinder (603) near the rotating disk (601) is open. Several air vents are opened on the outer surface of the hollow disk (606).

8. A circulating leak-proof two-color injection mold according to claim 7, characterized in that: The fixed cover (801) is provided with a striking mechanism (7). The striking mechanism (7) includes several Z-shaped plates (701) fixedly connected to the side wall of the upper mold body (204) inside the fixed cover (801). The outer surface of the Z-shaped plate (701) is provided with an arc plate (702). The inside of the Z-shaped plate (701) is rotatably connected with a rotating rod (709). The end of the arc plate (702) near the rotating rod (709) is fixedly connected to the side wall of the bidirectional threaded sleeve (605). The end of the arc plate (702) away from the bidirectional threaded sleeve (605) passes through the side wall of the Z-shaped plate (701) and extends to the outside. The extended end of the arc plate (702) is slidably connected with a sliding sleeve (703).

9. A circulating leak-proof two-color injection mold according to claim 8, characterized in that: The Z-shaped plate (701) has a rotating shaft (704) inside. The rotating shaft (704) is slidably connected to the inside of the sliding sleeve (703). The end of the rotating shaft (704) away from the rotating rod (709) passes through the side wall of the upper mold body (204) and extends into the inside of the circular cavity (205). The outer surface of the extended end of the rotating shaft (704) is in contact with the outer surface of the rotating disk (601). The end of the rotating shaft (704) near the rotating rod (709) is fixedly connected to a C-shaped plate (707). The outer surface of the sliding sleeve (703) is rotatably connected to an L-shaped plate (705). The middle part of (705) is rotatably connected to the outer surface of the arc plate two (706). The arc plate two (706) is slidably connected to the inside of the C-shaped plate (707). The end of the L plate two (705) away from the sliding sleeve (703) is slidably connected to the side wall of the C-shaped plate (707). The side of the C-shaped plate (707) away from the sliding sleeve (703) is fixedly connected to the connecting plate (708). The side of the connecting plate (708) away from the C-shaped plate (707) is rotatably connected to the outer surface of the rotating rod (709). The side of the rotating rod (709) away from the C-shaped plate (707) is fixedly connected to the striking rod (710).

10. The injection molding method of a circulating leak-proof two-color injection mold according to claim 9, comprising the following steps: S1: First, connect the two upper mold top plates (201) to the two different colored injection ports on the injection molding machine, and at the same time connect the main body (1) to the rotary motor on the injection molding machine. Then, during injection, the injection molding machine drives the injection mechanism (2) to move towards the main body (1), so that the upper mold top plate (201) squeezes the upper mold body (204). S2: Close the mold plate (101) and the upper mold body (204), and insert the mold (102) into the middle of the fixed cover (801). After the upper mold body (204) and the mold plate (101) are closed, the liquid to be injected is injected into the mold (102) by the injection molding machine. After the injection is completed, the main body (1) is rotated by the motor on the injection molding machine. S3: Then close the mold plate (101) and the upper mold body (204) again and perform a second injection on the basis of the first injection to complete the two-color injection molding.

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