A two-color injection mold facilitating demolding

Abstract

The present application relates to injection mold technical field, specifically said is a kind of double-color injection mold of easy demoulding, including movable plate, rotary table, turnover structure, fixed structure, push structure, limiting structure, forming structure, clamping slot, fixed module, sealing plate, flow channel cavity, flow guide column, movable module, first die, second forming block, guide column, guide sleeve and second die;Limiting structure replaces traditional bolt fixing mode, without any tool can complete the disassembly of push plate, shortens operating time, improves mold maintenance efficiency, by fixed structure realizes the quick locking and release of first die and second die.It is not necessary to remove the entire mold from injection molding machine when replacing die, and it is not necessary to turn several bolts, only need to rotate screw rod to complete independent replacement or overhaul of single die, thereby shortening mold maintenance downtime, further improving mold maintenance efficiency.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, specifically a two-color injection mold that facilitates demolding. Background Technology

[0002] Two-color injection molding is a specialized mold that combines two different colored plastic materials into a single injection molding machine through two injection molding processes, creating a two-color appearance or a dual-material composite structure. Its characteristics include two independent injection molding systems or two injection molding processes achieved through mold rotation. It is widely used in consumer goods, automotive parts, and electronic product casings. For example, in the production of some wash cups, two-color injection molding is often used to mold the cup body and base in two colors to enhance the product's aesthetic appeal and user comfort.

[0003] However, traditional two-color injection molds typically use ejector plates for demolding. After both colors are molded, the ejector mechanism of the injection molding machine pushes the ejector plate, thus demolding the product. This type of ejector plate often partially obstructs the mold core during installation. When the mold core needs to be replaced or repaired, the ejector plate must first be removed. Since the ejector plate is usually fixed to the mold's sliding plate with multiple bolts, disassembly and installation require tightening these bolts one by one, which is cumbersome and time-consuming, severely impacting mold maintenance efficiency. Furthermore, most existing designs require removing the entire mold from the injection molding machine before disassembling and replacing the mold core, which is extremely inconvenient. The mold core itself is also secured to the moving or stationary module with multiple bolts, making disassembly and assembly equally time-consuming and labor-intensive, significantly increasing equipment downtime for maintenance. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a two-color injection mold that facilitates demolding.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a two-color injection mold that is easy to demold, including a movable plate, a turntable rotatably connected to the movable plate, two moving modules fixedly connected to the turntable, a first mold core installed on the moving module, a plurality of second molding blocks fixedly connected to the first mold core, and a push-pull structure provided on the moving module; The pushing structure includes a reset component, a sliding plate, a push plate, slots, and a telescopic drive component. The telescopic drive component is mounted on the movable plate. The reset component is provided on the moving module. The sliding plate is slidably connected to the moving module. The push plate is engaged with the sliding plate. The push plate has two slots. The end of the sliding plate passes through the slots. The sliding plate has a limiting structure. The limiting structure includes an elastic component, second locking blocks, a rotating shaft, and a support block. Four second locking blocks are slidably connected to the sliding plate. The end of the second locking block engages with the push plate. An elastic component is provided between the second locking block and the sliding plate. A rotating shaft is rotatably connected to the second locking block. A support block is fixedly connected to the rotating shaft.

[0006] Specifically, the reset assembly includes a first guide rod, a limiting ring, and a first spring. Two first guide rods are fixedly connected to the moving module, and a limiting ring is fixedly connected to each first guide rod. The two first guide rods are slidably connected to the slide plate. A first spring is sleeved on the outer side of the first guide rod. One end of the first spring abuts against the slide plate, and the other end abuts against the moving module.

[0007] Specifically, the elastic component includes a second spring and a groove. The second spring is provided between the second locking block and the sliding plate. The second locking block is provided with a groove, and one end of the second spring is located inside the groove.

[0008] Specifically, the cross-section of the end of the skateboard is trapezoidal, and the two first guide rods are symmetrically distributed about the middle of the skateboard.

[0009] Specifically, the movable plate is provided with a flipping structure, the flipping structure includes a gear ring, the gear ring is fixedly connected to the turntable, a rotary drive assembly is installed on the movable plate, the output end of the rotary drive assembly is fixedly connected to a gear, the gear meshes with the gear ring, and the two moving modules are arranged in a circular array about the center of the turntable.

[0010] Specifically, a fixed module is provided on one side of the moving module, and a second mold core is installed on the fixed module. The second mold core is provided with a forming structure.

[0011] Specifically, the molding structure includes a second guide rod, a plurality of second guide rods are fixedly connected to the second mold core, a movable seat is slidably connected to the plurality of second guide rods, a third spring is sleeved on the outer side of the second guide rod, one end of the third spring abuts against the movable seat and the other end abuts against the second mold core, two stop blocks are detachably installed on the second mold core by bolts, the stop blocks abut against the movable seat, four first molding blocks are slidably connected to the movable seat, a connecting shaft is fixedly connected to two first molding blocks facing the same direction, and two connecting rods are rotatably connected between the two outermost first molding blocks and the movable seat.

[0012] Specifically, a sealing plate is detachably installed on the fixed module by multiple bolts. The sealing plate is provided with an injection port. The fixed module has a flow channel cavity inside. Four flow guide columns are fixedly connected inside the fixed module. The flow guide columns are slidably connected to the movable seat. The flow guide columns have a flow channel hole at the center.

[0013] Specifically, the fixed module is equipped with four guide posts, and the moving module is equipped with four guide sleeves.

[0014] Specifically, the first mold core has two slots on both sides, and the second mold core has two slots on both sides. Both the moving module and the fixed module have a fixing structure, which includes a guide seat. Two guide seats are fixedly connected to both the moving module and the fixed module. A first locking block is slidably connected to the guide seat. The end of the first locking block is located inside the slot. A lead screw is rotatably connected to the guide seat. One end of the lead screw has an integrally formed connector. The lead screw is threadedly connected to the first locking block. The two first locking blocks inside the moving module engage with the first mold core, and the two first locking blocks inside the fixed module engage with the second mold core. The lead angle of the lead screw is smaller than the friction angle.

[0015] The beneficial effects of this invention are: (1) The two-color injection mold for easy demolding described in this invention utilizes the cooperation of the second locking block, rotating shaft, support block, and second spring in the limiting structure. When the push plate needs to be disassembled, the support block is rotated to push the second locking block to compress the second spring and disengage from the push plate. When the plane of the support block is in contact with the slide plate, it can remain in a disengaged state, at which point the push plate can be directly removed from the slide plate. During installation, the slot of the push plate is aligned with the end of the slide plate and inserted, and then the support block is rotated in the opposite direction. The second locking block automatically resets and engages with the push plate under the elastic force of the second spring, achieving rapid locking. This structure completely eliminates the traditional bolt fixing method, and the disassembly and assembly of the push plate can be completed without any tools, shortening the operation time and improving the mold maintenance efficiency.

[0016] (2) The two-color injection mold of the present invention, which is easy to demold, achieves rapid locking and releasing of the mold core by means of the cooperation of the guide seat, lead screw, connector and first locking block in the fixed structure, rotating the lead screw can drive the first locking block to slide along the guide seat, so that its end can be locked into or released from the locking groove on the side of the mold core. When replacing the mold core, it is not necessary to remove the entire mold from the injection molding machine, nor is it necessary to tighten multiple bolts. Only the lead screw needs to be rotated to complete the independent replacement or repair of a single mold core, thereby shortening the mold maintenance downtime and further improving the mold maintenance efficiency.

[0017] (3) The two-color injection mold of the present invention, which facilitates demolding, drives the turntable to rotate precisely 180° through the cooperation of the gear ring, gear and rotary drive component in the flipping structure, so that the positions of the two moving modules are interchanged. Two-color injection molding can be completed in one mold without transferring the semi-finished product to another machine, reducing equipment occupation and transfer time, and significantly improving production efficiency. At the same time, the molding structure and the push structure work together: when the mold is closed, the push plate pushes the movable seat to compress the third spring, and drives the four first molding blocks to move closer together to form a sealed injection cavity through the connecting rod, ensuring injection accuracy; when the mold is opened, the third spring resets, the movable seat drives the first molding blocks to move away from each other, realizing the first demolding of the product. Then the telescopic drive component pushes the slide plate and push plate to push the product out of the second molding block, completing the second demolding. The whole demolding process is automatic and orderly, which not only ensures the injection quality, but also realizes the smooth demolding of the product, avoiding the risk of damage caused by manual intervention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a two-color injection mold for easy demolding provided by the present invention; Figure 2 This is a schematic diagram of the connection structure between the movable plate and the rotation drive assembly of the present invention; Figure 3 This is a schematic diagram of the connection structure between the guide seat and the lead screw of the present invention; Figure 4 This is a schematic diagram of the connection structure between the second mold core and the second guide rod of the present invention; Figure 5 This is a schematic diagram of the connection structure between the first mold core and the second molding block of the present invention; Figure 6 This is a schematic diagram of the connection structure between the skateboard and the push plate of the present invention; Figure 7 for Figure 6 The enlarged schematic diagram of part A shown below; Figure 8 This is a schematic diagram of the connection structure between the first guide rod and the limiting ring of the present invention; Figure 9 This is a schematic diagram of the connection structure between the second card block and the rotating shaft of the present invention.

[0020] In the diagram: 1. Movable plate; 2. Turntable; 3. Flipping structure; 301. Gear ring; 302. Gear; 303. Rotary drive assembly; 4. Fixed structure; 401. Guide seat; 402. Lead screw; 403. Connector; 404. First locking block; 5. Pushing structure; 501. First guide rod; 502. Limiting ring; 503. First spring; 504. Slide plate; 505. Push plate; 506. Slot; 507. Telescopic drive assembly; 6. Limiting structure; 601. Second locking block; 602. 603. Rotating shaft; 604. Support block; 605. Groove; 606. Second spring; 7. Molding structure; 701. Second guide rod; 702. Third spring; 703. Movable seat; 704. Stop block; 705. First molding block; 706. Connecting shaft; 707. Connecting rod; 8. Slot; 9. Fixed module; 10. Sealing plate; 11. Flow channel cavity; 12. Guide column; 13. Moving module; 14. First mold core; 15. Second molding block; 16. Guide column; 17. Guide sleeve; 18. Second mold core. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figure 1-9 As shown, a two-color injection mold for easy demolding according to the present invention includes a movable plate 1, a turntable 2 rotatably connected to the movable plate 1, and two moving modules 13 fixedly connected to the turntable 2. A first mold core 14 is mounted on the moving module 13, and a plurality of second molding blocks 15 are fixedly connected to the first mold core 14. The second molding blocks 15 cooperate with the first molding blocks 705 and the guide column 12 to form a cavity. After the hot-melt plastic flows into the cavity, the product is injection molded. The moving module 13 is provided with a push structure 5, which is used to push the product out of the second molding blocks 15 after the two-color injection molding is completed, realizing automatic demolding.

[0023] Specifically, such as Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the push structure 5 includes a reset assembly, a slide plate 504, a push plate 505, a slot 506, and a telescopic drive assembly 507. The telescopic drive assembly 507 is mounted on the movable plate 1. The telescopic drive assembly 507 is preferably a cylinder, which has a large output force and smooth operation. Its extended output end can push the slide plate 504 to move, and the push plate 505 moves synchronously to eject the workpiece. The moving module 13 is equipped with a reset assembly, and the slide plate 504 is slidably connected to the moving module 13. The push plate 505 is engaged with the slide plate 504, and the push plate 505 has two slots 506. The end of the slide plate 504 passes through the slots 506. The cross-section of the end of the slide plate 504 is trapezoidal, which guides the installation of the push plate 505. When the output end of the telescopic drive assembly 507 extends, its end abuts against the slide plate 504 and pushes the slide plate 504 to slide. The slide plate 504 drives the push plate 505 to move synchronously, and the push plate 505 can push out the product fitted onto the second forming block 15.

[0024] Specifically, such as Figure 1 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, the slide plate 504 is provided with a limiting structure 6, which includes an elastic component, a second locking block 601, a rotating shaft 602, and a support block 603. Four second locking blocks 601 are slidably connected to the slide plate 504. The push plate 505 is fixed by engaging with the end of the second locking block 601, preventing it from loosening or falling off during operation. An elastic component is provided between the second locking block 601 and the slide plate 504. A rotating shaft 602 is rotatably connected to the second locking block 601, and a support block 603 is fixedly connected to the rotating shaft 602. The elastic component includes a second spring 605 and a groove 604. A second spring 605 is provided between the second locking block 601 and the slide plate 504, and a groove 604 is provided on the second locking block 601. One end of the second spring 605 is located inside the groove 604. The groove 604 limits the second spring 605, preventing it from shifting during compression or extension, thus ensuring the stability and reliability of its operation. When the push plate 505 needs to be disassembled, the support block 603 is rotated, causing its end to push the second locking block 601 to slide on the slide plate 504 and compress the second spring 605. This disengages the end of the second locking block 601 from the push plate 505. When the support block 603 rotates until its plane is in contact with the surface of the slide plate 504, it remains in this position due to friction. At this point, the push plate 505 can be removed from the slide plate 504, achieving quick disassembly of the push plate 505. When it is necessary to install the push plate 505, align the slot 506 of the push plate 505 with the end of the slide plate 504 and insert it. Then rotate the support block 603 in the opposite direction. The second locking block 601 is reset under the elastic force of the second spring 605, and its end engages with the push plate 505 again, thus completing the quick installation of the push plate 505.

[0025] Specifically, such as Figure 3 and Figure 8As shown, the reset assembly includes a first guide rod 501, a limiting ring 502, and a first spring 503. Two first guide rods 501 are fixedly connected to the moving module 13, guiding the movement of the slide plate 504. A limiting ring 502 is fixedly connected to each first guide rod 501, limiting the sliding stroke of the slide plate 504 and preventing it from detaching from the first guide rod 501 under the action of the first spring 503. The two first guide rods 501 are slidably connected to the slide plate 504, and are symmetrically distributed about the middle of the slide plate 504, ensuring that the slide plate 504 is under balanced force and that the sliding process is smooth and stable. A first spring 503 is sleeved on the outer side of each first guide rod 501, with one end of the spring 503 abutting against the slide plate 504 and the other end abutting against the moving module 13. After the telescopic drive assembly 507 pushes the slide plate 504 to complete the demolding, the telescopic drive assembly 507 resets, and the slide plate 504 automatically resets under the elastic force of the first spring 503, preparing for the next injection cycle.

[0026] Specifically, such as Figure 1 ,and Figure 2 As shown, the movable plate 1 is equipped with a flipping structure 3, which includes a gear ring 301. The gear ring 301 is fixedly connected to the turntable 2. A rotary drive assembly 303 is mounted on the movable plate 1. The rotary drive assembly 303 is preferably a servo motor, which has high output accuracy and fast response speed, and can accurately control the rotation angle of the turntable 2. A gear 302 is fixedly connected to the output end of the rotary drive assembly 303. The gear 302 meshes with the gear ring 301. Since the diameter of the gear 302 is smaller than the diameter of the gear ring 301, it can save effort during transmission. The two moving modules 13 are arranged in a circular array about the center of the turntable 2. Through the meshing transmission of the gear 302 and the gear ring 301, the rotary drive assembly 303 can drive the turntable 2 to rotate precisely 180 degrees, so that the positions of the two moving modules 13 are interchanged, thereby realizing the position switching between the first injection and the second injection. After the first color of plastic is injected, the movable plate 1 opens the mold, the rotary drive assembly 303 starts, and drives the turntable 2 to rotate 180 degrees, rotating the movable module 13, which has completed one injection, to the position of another fixed module 9, to perform the injection of the second color.

[0027] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a fixed module 9 is provided on one side of the moving module 13. A second mold core 18 is mounted on the fixed module 9, and a forming structure 7 is provided on the second mold core 18. The forming structure 7 includes a second guide rod 701. Multiple second guide rods 701 are fixedly connected to the second mold core 18, and a movable seat 703 is slidably connected to the multiple second guide rods 701. The second guide rods 701 provide sliding guidance for the movable seat 703, ensuring smooth movement of the movable seat 703. A third spring 702 is sleeved on the outer side of the second guide rods 701. One end of the third spring 702 abuts against the movable seat 703 and the other end abuts against the second mold core 18. The third spring 702 is compressed and stores energy when the mold is closed, and releases energy when the mold is opened, driving the movable seat 703 to reset. Two stop blocks 704 are detachably mounted on the second mold core 18 via bolts. The stop blocks 704 abut against the movable seat 703, limiting the sliding stroke of the movable seat 703 and preventing it from detaching from the second guide rod 701. Four first molding blocks 705 are slidably connected to the movable seat 703, and these first molding blocks 705 are used to mold the external shape of the product. A connecting shaft 706 is fixedly connected to two first molding blocks 705 facing the same direction, allowing them to move synchronously. Two connecting rods 707 are rotatably connected between the two outermost first molding blocks 705 and the movable seat 703. During mold closing, the push plate 505 contacts the movable seat 703 and pushes it to slide along the second guide rod 701 towards the second mold core 18, compressing the third spring 702. When the movable seat 703 slides, it drives multiple first molding blocks 705 to move synchronously. The two outermost first molding blocks 705 move inward towards the movable seat 703 under the action of the connecting rod 707, so that the four first molding blocks 705 move closer together and form a complete injection cavity. During the mold opening process, the movable plate 1 drives the moving module 13 away from the fixed module 9, the push plate 505 disengages from the movable seat 703, the third spring 702 releases energy to push the movable seat 703 to reset, and the movable seat 703 drives the four first molding blocks 705 to move away from each other through the connecting rod 707, realizing the first demolding of the product.

[0028] Specifically, such as Figure 1 , Figure 3 and Figure 4As shown, a sealing plate 10 is detachably mounted on the fixed module 9 via multiple bolts. The sealing plate 10 has an injection port. The fixed module 9 has a flow channel cavity 11 inside, and four guide columns 12 are fixedly connected inside the fixed module 9. The guide columns 12 are slidably connected to the movable seat 703, and a flow channel hole is provided at the center of each guide column 12. The sealing plate 10 is used to seal the flow channel cavity 11 and facilitates cleaning and maintenance of the interior of the flow channel cavity 11. The guide columns 12 can be inserted into the injection cavity formed by the first molding block 705, guiding the molten plastic from the flow channel cavity 11 into the interior of the injection cavity, ensuring uniform injection filling. After the mold is closed, the end of the guide column 12 extends into the injection cavity formed by the four first molding blocks 705. The molten plastic enters the runner cavity 11 from the injection port, and then enters the injection cavity through the runner hole inside the guide column 12 to complete the injection. The fixed module 9 is equipped with four guide columns 16, and the moving module 13 is equipped with four guide sleeves 17. The guide columns 16 and guide sleeves 17 work together to provide precise guidance and positioning for the moving module 13 and the fixed module 9 during mold closing, ensuring mold closing accuracy and avoiding product defects or mold damage caused by mold closing offset.

[0029] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the first mold core 14 has two slots 8 on both sides, and the second mold core 18 has two slots 8 on both sides. Both the moving module 13 and the fixed module 9 are equipped with a fixing structure 4. The fixing structure 4 includes a guide seat 401. Two guide seats 401 are fixedly connected to both the moving module 13 and the fixed module 9. A first locking block 404 is slidably connected to the guide seat 401. The end of the first locking block 404 is located inside the slot 8. By engaging the end of the first locking block 404 into the slot 8, the mold core is locked. A lead screw 402 is rotatably connected to the guide seat 401. The lead angle of the lead screw 402 is smaller than the friction angle, giving the lead screw 402 a self-locking function, preventing the first locking block 404 from loosening due to vibration during operation. One end of the lead screw 402 has an integrally formed connector 403, which is used to cooperate with tools such as wrenches, facilitating the operator to apply force to rotate the lead screw 402. The lead screw 402 is threadedly connected to the first locking block 404. Two first locking blocks 404 located inside the moving module 13 engage with the first mold core 14, and two first locking blocks 404 located inside the stationary module 9 engage with the second mold core 18. When it is necessary to disassemble the first mold core 14 or the second mold core 18, firstly, the push plate 505 is removed through the limiting structure 6. Then, a wrench is inserted into the connector 403 and the lead screw 402 is rotated. When the lead screw 402 rotates, it drives the first locking blocks 404 to slide along the guide seat 401, causing the end of the first locking block 404 to disengage from the slot 8. At this point, the mold core can be removed from the moving module 13 or the stationary module 9. When a new mold core needs to be installed, the mold core is placed in position, and the lead screw 402 is rotated in the opposite direction, driving the end of the first locking block 404 to engage inside the slot 8, thus fixing the mold core. The entire mold core replacement process does not require tightening multiple bolts, making the operation simple and quick, and significantly shortening the mold maintenance time.

[0030] In use, the two fixed modules 9 and the movable plate 1 are respectively installed on the fixed and moving sides of the injection molding machine. The guide pillars on the injection molding machine pass through the guide grooves at the four corners of the movable plate 1. The extrusion ends of the two plastic extruders are respectively connected to the injection ports on the two sealing plates 10, ensuring communication between the injection ports and the plastic discharge ports of the extruders. The drive device on the injection molding machine controls the movable plate 1 to move towards the two fixed modules 9 for mold closing, and the two moving modules 13 move synchronously with the movable plate 1. During mold closing, the guide pillars 16 are inserted into the guide sleeves 17, providing precise guidance for mold closing.

[0031] During mold closing, the first molding block 705 is inserted between two opposing second molding blocks 15, at which point all four first molding blocks 705 are in an open state. As the moving module 13 continues to approach the fixed module 9, the push plate 505 first contacts the movable seat 703 and pushes the movable seat 703 to slide inside the second mold core 18, while multiple third springs 702 are simultaneously compressed. As the movable seat 703 slides, it drives multiple first molding blocks 705 to move synchronously. The two outermost first molding blocks 705, under the action of the connecting rod 707, move inwards towards the movable seat 703, causing the opposing and adjacent first molding blocks 705 to move closer together until they abut against each other, forming a complete injection cavity. At this point, one end of the guide column 12 extends into the injection cavity. Then, the hot-melt plastic enters the runner cavity 11 from the end of the extruder, and then enters the injection cavity through the runner holes inside the guide column 12, completing the injection molding of the first color plastic. After the first color is injection molded, the injection molding machine drives the movable plate 1 to open the mold. During the mold opening process, multiple third springs 702 reset, pushing the movable seat 703 to reset. At this time, under the action of the connecting rod 707, the two adjacent and opposite first molding blocks 705 move away from each other, causing the product to separate from the first molding block 705, realizing the first demolding of the product. After the movable plate 1 is fully reset, the rotary drive assembly 303 is started. The output end of the rotary drive assembly 303 drives the gear 302 to rotate, the gear 302 drives the gear ring 301 to rotate, and the gear ring 301 drives the turntable 2 to rotate 180 degrees, and the positions of the two moving modules 13 are interchanged. Then, the movable plate 1 closes the mold again. During the mold closing process, the product follower module 13, which has completed the first injection molding, is sent to the position of another fixed module 9. At this time, the push plate 505 pushes the movable seat 703 again to bring the first molding block 705 closer together. The injection molding system on the second fixed module 9 injects the second color of plastic, which combines with the first injection molded product to form a complete two-color product. After the second injection molding is completed, the movable plate 1 opens the mold again, and the first demolding process is repeated. When the movable plate 1 is fully opened, the telescopic drive assembly 507 is activated. The output end of the telescopic drive assembly 507 extends and abuts against the slide plate 504. The slide plate 504 slides against the elastic force of the first spring 503. The slide plate 504 drives the push plate 505 to move, and the push plate 505 pushes out the two-color injection molded product fitted on the second molding block 15, realizing the second automatic demolding of the product. After demolding is completed, the telescopic drive assembly 507 resets, and the slide plate 504 automatically resets under the elastic force of the first spring 503.

[0032] When the first mold core 14 needs to be replaced, first rotate the support block 603, causing it to push the second locking block 601 to compress the second spring 605 and slide it away from the push plate 505. Stop rotating when the plane of the support block 603 is in contact with the slide plate 504. At this time, the second locking block 601 is disengaged from the push plate 505. Operate the remaining second locking blocks 601 in sequence to disengage them all, so that the push plate 505 can be removed from the slide plate 504, realizing the quick disassembly of the push plate 505 and greatly improving the disassembly and assembly efficiency. Then, insert the wrench into the connector 403 and rotate the screw 402. The screw 402 drives the first locking block 404 to move along the guide seat 401 away from the first mold core 14, so that the first locking block 404 is disengaged from the slot 8. At this time, the first mold core 14 can be easily removed for replacement or repair. Similarly, the second mold core 18 can be removed for replacement or repair. The entire operation requires no disassembly of the mold or removal of bolts, simplifying the maintenance process, effectively reducing equipment downtime, and lowering operational difficulty. After replacement, production can be resumed by reinstalling the push plate 505 and the new first mold core 14 in reverse order. The operation is convenient and reliable.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A two-color injection mold for easy demolding, comprising a movable plate (1), a turntable (2) rotatably connected to the movable plate (1), two moving modules (13) fixedly connected to the turntable (2), a first mold core (14) mounted on the moving module (13), and a plurality of second molding blocks (15) fixedly connected to the first mold core (14), characterized in that: The moving module (13) is provided with a pushing structure (5); The push structure (5) includes a reset assembly, a sliding plate (504), a push plate (505), a slot (506), and a telescopic drive assembly (507). The telescopic drive assembly (507) is installed on the movable plate (1). The moving module (13) is provided with a reset assembly. The sliding plate (504) is slidably connected to the moving module (13). The push plate (505) is engaged on the sliding plate (504). The push plate (505) is provided with two slots (506). The end of the sliding plate (504) passes through the slot (506). 04) A limiting structure (6) is provided on the plate. The limiting structure (6) includes an elastic component, a second locking block (601), a rotating shaft (602) and a support block (603). Four second locking blocks (601) are slidably connected on the slide plate (504). The ends of the second locking blocks (601) are engaged with the push plate (505). An elastic component is provided between the second locking blocks (601) and the slide plate (504). A rotating shaft (602) is rotatably connected on the second locking blocks (601). A support block (603) is fixedly connected on the rotating shaft (602).

2. The two-color injection mold for easy demolding according to claim 1, characterized in that: The reset assembly includes a first guide rod (501), a limiting ring (502), and a first spring (503). Two first guide rods (501) are fixedly connected to the moving module (13). A limiting ring (502) is fixedly connected to the first guide rod (501). The two first guide rods (501) are slidably connected to the slide plate (504). A first spring (503) is sleeved on the outer side of the first guide rod (501). One end of the first spring (503) abuts against the slide plate (504), and the other end abuts against the moving module (13).

3. A two-color injection mold for easy demolding according to claim 1, characterized in that: The elastic component includes a second spring (605) and a groove (604). The second spring (605) is provided between the second locking block (601) and the sliding plate (504). The second locking block (601) is provided with a groove (604). One end of the second spring (605) is located inside the groove (604).

4. A two-color injection mold for easy demolding according to claim 2, characterized in that: The cross-section of the end of the slide plate (504) is trapezoidal, and the two first guide rods (501) are symmetrically distributed about the middle of the slide plate (504).

5. A two-color injection mold for easy demolding according to claim 1, characterized in that: The movable plate (1) is provided with a flipping structure (3), the flipping structure (3) includes a gear ring (301), the gear ring (301) is fixedly connected to the turntable (2), the movable plate (1) is equipped with a rotary drive assembly (303), the output end of the rotary drive assembly (303) is fixedly connected to a gear (302), the gear (302) meshes with the gear ring (301), and the two moving modules (13) are arranged in a circular array about the center of the turntable (2).

6. A two-color injection mold for easy demolding according to claim 1, characterized in that: The moving module (13) has a fixed module (9) on one side, and a second mold core (18) is installed on the fixed module (9). The second mold core (18) has a forming structure (7).

7. A two-color injection mold for easy demolding according to claim 6, characterized in that: The molding structure (7) includes a second guide rod (701), a plurality of second guide rods (701) are fixedly connected to the second mold core (18), a movable seat (703) is slidably connected to the plurality of second guide rods (701), a third spring (702) is sleeved on the outer side of the second guide rod (701), one end of the third spring (702) abuts against the movable seat (703) and the other end abuts against the second mold core (18), two stop blocks (704) are detachably installed on the second mold core (18) by bolts, the stop blocks (704) abut against the movable seat (703), four first molding blocks (705) are slidably connected to the movable seat (703), a connecting shaft (706) is fixedly connected to two first molding blocks (705) facing the same direction, and two connecting rods (707) are rotatably connected between the two outermost first molding blocks (705) and the movable seat (703).

8. A two-color injection mold for easy demolding according to claim 6, characterized in that: A sealing plate (10) is detachably installed on the fixed module (9) by multiple bolts. The sealing plate (10) is provided with an injection port. The fixed module (9) is provided with a flow channel cavity (11). Four flow guide columns (12) are fixedly connected inside the fixed module (9). The flow guide columns (12) and the movable seat (703) are slidably connected. The flow guide column (12) is provided with a flow channel hole at the center.

9. A two-color injection mold for easy demolding according to claim 6, characterized in that: The fixed module (9) is equipped with four guide posts (16), and the moving module (13) is equipped with four guide sleeves (17).

10. A two-color injection mold for easy demolding according to claim 6, characterized in that: The first mold core (14) has two slots (8) on both sides, and the second mold core (18) has two slots (8) on both sides. Both the moving module (13) and the fixed module (9) are provided with a fixing structure (4). The fixing structure (4) includes a guide seat (401). Both the moving module (13) and the fixed module (9) are fixedly connected to two guide seats (401). A first locking block (404) is slidably connected to the guide seat (401). The end of the first locking block (404) is located in the slot (8). Inside the guide seat (401), a lead screw (402) is rotatably connected. One end of the lead screw (402) is integrally formed with a connector (403). The lead screw (402) is threadedly connected to the first locking block (404). The two first locking blocks (404) inside the moving module (13) are engaged with the first mold core (14). The two first locking blocks (404) inside the fixed module (9) are engaged with the second mold core (18). The lead angle of the lead screw (402) is smaller than the friction angle.

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