A two-color manifold injection mold

Abstract

This invention provides a two-color manifold injection mold, comprising a first-shot mold and a second-shot mold disposed between a fixed-plate system and an ejection system. The first-shot mold includes a first-shot insert connected to the fixed-plate system, a first-shot fixed-plate slider mechanism slidably connected to the fixed-plate system, and a first-shot moving mold core and a first-shot moving mold slider mechanism connected to the ejection system. The first-shot insert, the first-shot fixed-plate slider mechanism slidably connected to the fixed-plate system, and the first-shot moving mold core and the first-shot moving mold slider mechanism form a first-shot cavity. The second-shot mold includes two-shot inserts connected to the fixed-plate system, a second-shot fixed-plate slider mechanism slidably connected to the fixed-plate system, and two-shot moving mold cores and two-shot moving mold slider mechanisms connected to the ejection system. The two-shot inserts, the two-shot fixed-plate slider mechanism slidably connected to the fixed-plate system, and the two-shot moving mold cores and two-shot moving mold slider mechanisms form a second-shot cavity. This invention solves the slider interference problem in small-sized two-color molds, solves the insert deformation problem, and improves the quality of injection molds.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, specifically relating to a two-color manifold injection mold. Background Technology

[0002] Two-color injection molding technology is advantageous because it can mold two different colors or materials of plastic into a single piece, achieving a seamless combination and enhancing product functionality. In the two-color injection molding process, after the first injection, the mold is opened, the rear mold rotates 180° with the product, the mold closes, a second injection is performed, and finally the mold is opened again to eject the product. However, in the production of small-sized products, the rear mold needs to simultaneously set up a fixed mold slider and a moving mold slider, and these two sliders must be stacked vertically in space. Interference exists between the two stacked sliders, and even if they are installed with difficulty, the inclined guide pillars used to drive the moving mold slider are prone to jamming during mold opening and closing due to excessive stroke and insufficient rigidity. Furthermore, the product itself is very small, with internal inserts for molding having a diameter of only φ6mm. During high-pressure injection molding, the impact force generated by the molten plastic can easily cause the inserts to deflect, bend, or even deform. Insert misalignment can cause quality defects such as out-of-tolerance dimensions and uneven wall thickness, and can also accelerate mold damage and affect mold life. Furthermore, in two-color injection molds, the rear mold needs to be rotated and closed again for the second injection. If the slider mechanism of the first injection product on the rear mold moves backward along with the male mold core during the first mold opening, the slider that moves backward prematurely will not be able to accurately reset during the subsequent mold closing process, posing a risk of mold collision.

[0003] Therefore, the above problems urgently need to be solved. Utility Model Content

[0004] Purpose of the utility model: To overcome the above shortcomings, this utility model provides a two-color manifold injection mold. The fixed mold slider is connected to the fixed platen side, and the moving mold slider is connected to the moving platen side, allowing the fixed and moving mold sliders to overlap and avoid interference. Furthermore, connecting the moving mold slider to the moving platen side shortens the inclined guide pillars, increases their rigidity, and prevents jamming during mold opening and closing. Using shared inclined guide pillars simplifies the mold structure, improves the stability of the injection molded product during mold rotation, and enhances product quality. Technical Solution: To achieve the above objectives, this utility model provides a two-color manifold injection mold, including a fixed template system and an ejection system, and a first-shot mold and a second-shot mold disposed between the fixed template system and the ejection system. The first-shot mold includes a first-shot insert connected to the fixed template system, a first-shot fixed mold slider mechanism assembly slidably connected to the fixed template system, and a first-shot moving mold core and a first-shot moving mold slider mechanism connected to the ejection system. The first-shot insert, the first-shot fixed mold slider mechanism assembly, the first-shot moving mold core, and the first-shot moving mold slider mechanism form a first-shot cavity. The second-shot mold includes two-shot inserts connected to the fixed template system, a second-shot fixed mold slider mechanism assembly slidably connected to the fixed template system, and two-shot moving mold cores and two-shot moving mold slider mechanisms connected to the ejection system. The two-shot inserts, the two-shot fixed mold slider mechanism assembly, the two-shot moving mold cores, and the two-shot moving mold slider mechanisms form a second-shot cavity.

[0005] The fixed-mold slider mechanism assembly includes a first slider mechanism located on the side of the first-shot mold cavity closer to the second-shot mold cavity, and a second slider mechanism located on the side of the first-shot mold cavity farther from the second-shot mold cavity. The moving-mold slider mechanism is located below the first slider mechanism.

[0006] The two-shot fixed mold slider mechanism assembly includes a third slider mechanism located on the side of the two-shot mold cavity closer to the first-shot mold cavity, and a fourth slider mechanism located on the side of the two-shot mold cavity farther from the first-shot mold cavity. The two-shot moving mold slider mechanism is located below the fourth slider mechanism.

[0007] The two injection mold slider mechanisms are connected to a common inclined guide post, and the first injection mold slider mechanism is provided with a first inclined guide post groove adapted to the common inclined guide post. When the first injection mold and the second injection mold rotate and exchange positions through the ejection system, the common inclined guide post can be inserted into the first inclined guide post groove to drive the first injection mold slider mechanism.

[0008] In this invention, the first injection insert is vertically fixed to the fixed template system via a first injection insert fixing plate, and the axis of the first injection insert coincides with the central axis of the first injection mold cavity. The second injection insert adopts the same fixing structure as the first injection insert and is fixed to the fixed template system via a second injection insert fixing plate, ensuring the stability of the insert during the second injection molding. A shared inclined guide post is provided to ensure that the sliding block mechanism of the first injection moving mold does not move after the first injection molding mold parting. After the mold rotates and exchanges positions, the shared inclined guide post drives the sliding block mechanism of the first injection moving mold to part, ensuring smooth mold opening. The shared inclined guide post simplifies the mold structure, ensures the stability of the first injection product during mold rotation, and improves product quality.

[0009] In the first-shot fixed mold slider mechanism assembly, the first and second slider mechanisms are fixed mold sliders that slide along the bottom surface of the fixed mold plate system to form features on the side of the product; the first-shot moving mold slider mechanism is a moving mold slider that slides in a direction inclined towards the first-shot mold cavity to form oblique through holes inside the product. Since the first and second slider mechanisms are located on the fixed mold plate system side and the moving mold slider is located on the ejection system side, they are stacked vertically but belong to different moving parts. During mold opening, the first and second slider mechanisms move with the fixed mold plate system, and the moving mold slider moves with the ejection system. The movement trajectories do not intersect, thus solving the interference problem of stacked sliders.

[0010] The third and fourth slider mechanisms of the two-shot mold are also fixed mold sliders of the fixed mold platen system. The moving mold slider mechanism of the two-shot mold is a moving mold slider of the ejection system side, symmetrically arranged on both sides of the two-shot mold cavity, forming a mirror layout with the one-shot mold, ensuring balanced force on the mold during two-color injection. This utility model solves the slider interference problem of small-sized two-color molds through the stacked structure of the fixed mold slider mechanism group and the moving mold slider.

[0011] Furthermore, in the aforementioned two-color manifold injection mold, the first injection mold includes a fixed injection mold plate, a moving injection mold plate, and a fixed injection spade base plate. The moving injection core is connected to the ejection system via the moving injection mold plate. The first slider mechanism includes a first spade base, a first slider, and a first side core. The first side core is connected to the side of the first slider near the injection cavity. The first slider is slidably connected to the fixed injection mold plate near the moving injection mold plate. The first spade base is connected to the fixed injection mold plate and is slidably connected to the first slider within a through-groove provided in the fixed injection mold plate.

[0012] Furthermore, in the aforementioned two-color manifold injection mold, the injection moving mold slider mechanism includes an injection moving mold base, an injection core-pulling slider, and an injection angled core-pulling mechanism. The injection angled core-pulling mechanism is inclined towards the injection cavity and connected to the side of the injection core-pulling slider near the injection cavity. The injection core-pulling slider is slidably connected to the side of the injection platen near the injection fixed platen. The injection moving mold base is connected to the side of the injection fixed platen near the injection platen. A first inclined guide post groove is located on the side of the injection core-pulling slider away from the injection cavity. During mold closing, the injection angled core-pulling mechanism and the injection insert engage, preventing deformation of the injection insert during injection and improving the quality of the injection molded product.

[0013] Furthermore, in the aforementioned two-color manifold injection mold, the two-shot mold includes a two-shot fixed template, a two-shot moving template, and a two-shot shovel base fixing plate.

[0014] The two-shot moving mold core is connected to the two-shot moving template and the ejection system. The fourth slider mechanism includes a second shovel base, a second slider, and a second side core. The second side core is connected to the second slider on the side near the two-shot mold cavity. The second slider is slidably connected to the side of the two-shot fixed template near the two-shot moving template. The second shovel base is connected to the two-shot shovel base fixing plate. The second shovel base passes through the two-shot fixed template and is slidably connected in the through-slot provided in the second slider.

[0015] Furthermore, in the aforementioned two-color manifold injection mold, the two-shot moving mold slider mechanism includes a two-shot moving mold base, a two-shot core-pulling slider, and a two-shot inclined core-pulling mechanism. The two-shot inclined core-pulling mechanism is inclined towards the two-shot mold cavity and connected to the two-shot core-pulling slider on the side near the two-shot mold cavity. The two-shot core-pulling slider is slidably connected to the two-shot moving mold plate on the side near the two-shot fixed mold plate. The two-shot moving mold base is connected to the two-shot fixed mold plate on the side near the two-shot moving mold plate. A common inclined guide post is connected to the two-shot moving mold base. The two-shot core-pulling slider is provided with a second inclined guide post groove, which is slidably fitted with the common inclined guide post. The first and second inclined guide post grooves are symmetrically arranged along the mold center. During mold closing, the two-shot inclined core-pulling mechanism and the two-shot insert are engaged, preventing deformation of the two-shot insert during injection molding and improving the quality of the injection molded product. The first-shot moving mold slider mechanism does not have angled guide pillars, while the second-shot moving mold slider mechanism has shared angled guide pillars. When the first-shot injection is completed, the ejection system moves the first-shot moving mold platen and the second-shot moving mold platen away from the first-shot fixed mold platen and the second-shot fixed mold platen, resulting in mold separation for the first shot. The ejection system rotates, the mold closes, and the second shot begins. After the first-shot injection mold separation, because the first-shot moving mold slider mechanism does not have angled guide pillars, the first-shot core-pulling slider remains stationary. After the ejection system rotates and the mold closes, the shared angled guide pillar extends into the first angled guide pillar groove. During the second-shot mold separation, the shared angled guide pillar drives the first-shot moving mold slider mechanism to slide away from the first-shot mold cavity, causing the first-shot angled core-pulling slider to be pulled out obliquely from inside the first-shot product, preparing for subsequent product ejection.

[0016] Furthermore, in the aforementioned two-color manifold injection mold, the first and second inclined guide post grooves are respectively designed as through grooves with an opening at one end away from the first injection cavity. The first and second inclined guide post grooves are each equipped with an elastic limiting mechanism, which includes a limiting post. The limiting post is slidably connected to the transverse holes provided in the first and second injection core-pulling sliders, respectively. An elastic element is connected within the transverse hole. The limiting post is slidably connected within the transverse hole and abuts against the elastic element. The elastic element causes a portion of the limiting post to extend out of the transverse hole. The limiting post has a guide surface away from the elastic element. The elastic element is a spring.

[0017] Furthermore, in the aforementioned two-color manifold injection mold, the guide surface includes a first inclined surface and a second inclined surface. The first inclined surface is inclined towards the fixed template system, and the second inclined surface is inclined towards the injection cavity.

[0018] Furthermore, in the aforementioned two-color manifold injection mold, slots are respectively formed along the side walls of the first and second inclined guide post slots. The slots extend parallel to the axis of the common inclined guide post. The slots are located on the side of the limiting post near one injection cavity, and a retaining strip is provided inside the slots. A third inclined surface is provided near the slots on the limiting post, and the third inclined surface and the retaining strip abut against each other.

[0019] Furthermore, in the aforementioned two-color manifold injection mold, the cross-section of the slot is set to L-shape, and the slot and the clip are adapted to each other.

[0020] When the mold is closed, the common inclined guide post moves toward the first inclined guide post groove. The common inclined guide post pushes the limiting post to compress the elastic element through the first inclined surface and the second inclined surface, so that the limiting post is completely retracted into the hole. After the common inclined guide post is fully inserted into the first inclined guide post groove, the spring force pushes the limiting post to extend. The limiting post restricts the common guide post from exiting the first inclined guide post groove laterally, thus providing conditions for smooth mold opening.

[0021] During this process, the third inclined surface engages with the retaining strip in the slot, achieving mechanical positioning of the limiting post and preventing rotation. During mold parting, the shared inclined guide post and the third inclined surface of the limiting post abut against each other, pushing the first injection mold slider mechanism to slide away from the first injection mold cavity, causing the first injection inclined core puller to be pulled obliquely out from inside the first injection product. After the core pulling action is completed, the ejection system continues to drive the first and second injection mold plates backward, completing the two-injection mold parting. This structural design eliminates the risk of mold collision.

[0022] Furthermore, in the aforementioned two-color manifold injection mold, the first slider mechanism and the second slider mechanism are symmetrically arranged on both sides of the central axis of the first injection cavity, and the third slider mechanism and the fourth slider mechanism are symmetrically arranged on both sides of the central axis of the second injection cavity.

[0023] As can be seen from the above technical solution, this utility model has the following beneficial effects: The dual-color manifold injection mold of this utility model places the first slider mechanism and the second slider mechanism on the fixed template system side, and the moving mold slider on the ejection system side (moving template). During mold opening, their movement trajectories do not intersect, solving the interference problem of stacked sliders. During mold closing, the inclined core puller and insert pin engage, preventing deformation of the insert pins during injection molding and improving the quality of the injection molded product. The elastic limiting mechanism prevents the inclined guide pillars from colliding with the mold during two-shot mold closing, and ensures normal mold separation during two-shot mold splitting, eliminating the risk of collision. The shared inclined guide pillar ensures that the moving mold slider mechanism of the first shot does not move after the first shot injection mold splitting. After the mold rotates and exchanges positions, the shared inclined guide pillar drives the moving mold slider mechanism of the first shot to separate the mold, ensuring smooth mold opening. The shared inclined guide pillar simplifies the mold structure, ensures the stability of the first shot product during mold rotation, and improves product quality. Attached Figure Description

[0024] Figure 1 This is a cross-sectional view of the two-color manifold injection mold of this utility model; Figure 2 As shown Figure 1 A magnified view of a portion of the image; Figure 3 As shown Figure 1 A magnified view of a portion of the image; Figure 4 As shown Figure 2 A magnified view of a portion of the image; Figure 5 As shown Figure 3 A magnified view of a portion of the image; Figure 6 This is a schematic diagram of the structure of the ejector mold slider mechanism; Figure 7 This is a schematic diagram of the structure of the two-shot moving mold slider mechanism; Figure 8 This is an internal schematic diagram of the two-shot moving mold slider mechanism; Figure 9 As shown Figure 7 A magnified view of a portion of the image; Figure 10 This is a schematic diagram of the structure of the two-shot moving mold slider mechanism.

[0025] In the diagram: 100, First injection cavity; 200, Second injection cavity; 1, Fixed mold plate; 2, Ejection system; 3, First injection mold; 32, First injection moving mold core; 321, First slider mechanism; 3211, First shovel base; 3212, First slider; 3213, First side core; 322, Second slider mechanism; 33, First injection moving mold slider mechanism; 331, First injection moving mold shovel base; 332, First injection core-pulling slider; 3321, First inclined guide post groove; 2221, Transverse hole; 4421, Transverse hole; 22211, Slot; 333, First injection inclined core-pulling; 34, First injection fixed mold plate; 35, First injection moving mold plate; 36, First injection... 4. Shovel base fixing plate, 421. Second-shot mold, 422. Third slider mechanism, 422. Fourth slider mechanism, 4221. Second shovel base, 4222. Second slider, 4223. Second side core, 431. Second-shot moving mold shovel base, 4311. Common inclined guide post, 432. Second-shot core pulling slider, 4321. Second inclined guide post groove, 433. Second-shot inclined core pulling, 44. Second-shot fixed mold plate, 444. Limiting post, 4441. Guide surface, 44411. First inclined surface, 44412. Second inclined surface, 44413. Third inclined surface, 445. Elastic element, 45. Second-shot moving mold plate, 46. Second-shot shovel base fixing plate. Detailed Implementation

[0026] Example

[0027] like Figure 1-2The illustrated two-color manifold injection mold includes a fixed template system 1 and an ejection system 2, with a first-shot mold 3 and a second-shot mold 4 disposed between the fixed template system 1 and the ejection system 2. The first-shot mold 3 includes a first-shot insert connected to the fixed template system 1, a first-shot fixed mold slider mechanism assembly slidably connected to the fixed template system 1, a first-shot moving mold core 32 and a first-shot moving mold slider mechanism 33 connected to the ejection system 2, the first-shot insert, the first-shot fixed mold slider mechanism assembly, the first-shot moving mold core 32, and the first-shot moving mold slider mechanism 33 forming a first-shot cavity 100. The second-shot mold 4 includes a second-shot insert connected to the fixed template system 1, a second-shot fixed mold slider mechanism assembly slidably connected to the fixed template system 1, a second-shot moving mold core 42 and a second-shot moving mold slider mechanism 43 connected to the ejection system 2, the second-shot insert, the second-shot fixed mold slider mechanism assembly, the second-shot moving mold core 42, and the second-shot moving mold slider mechanism 43 forming a second-shot cavity 200.

[0028] The fixed-mold slider mechanism assembly includes a first slider mechanism 321 located on the side of the first-shot mold cavity 100 near the second-shot mold cavity 200, and a second slider mechanism 322 located on the side of the first-shot mold cavity 100 away from the second-shot mold cavity 200. The moving-mold slider mechanism 33 is located below the first slider mechanism 321.

[0029] The two-shot fixed mold slider mechanism assembly includes a third slider mechanism 421 disposed on the side of the two-shot mold cavity 200 closer to the first-shot mold cavity 100, and a fourth slider mechanism 422 disposed on the side of the two-shot mold cavity 200 away from the first-shot mold cavity 100. The two-shot moving mold slider mechanism 43 is disposed below the fourth slider mechanism 422.

[0030] The two-shot mold slider mechanism 43 is connected to a common inclined guide post 4311. The one-shot mold slider mechanism 3) is provided with a first inclined guide post groove 3321 adapted to the common inclined guide post 4311. When the one-shot mold 3 and the two-shot mold 4 exchange positions through the ejection system 2, the common inclined guide post 4311 can be inserted into the first inclined guide post groove 3321 to drive the one-shot mold slider mechanism 33.

[0031] The template system 1 includes a panel, template, and sprue; the ejection system 2 includes a base plate, ejector base plate, ejector panel, ejector pin, square iron, and other conventional two-color injection mold settings, which will not be described in detail here.

[0032] In this utility model, the first injection insert is vertically fixed to the fixed template system 1 by the first injection insert fixing plate, and the axis of the first injection insert coincides with the central axis of the first injection mold cavity 100; the second injection insert 41 adopts the same fixing structure as the first injection insert 31, and is fixed to the fixed template system 1 by the second injection insert fixing plate to ensure the stability of the insert during the second injection molding.

[0033] like Figure 2-5The illustration shows a two-color manifold injection mold. The injection mold 3 includes an injection stationary template 34, an injection moving template 35, and an injection spade base fixing plate 36. An injection moving mold core 32 is connected to the ejection system 2 via the injection moving template 35. The first slider mechanism 321 includes a first spade base 3211, a first slider 3212, and a first side core 3213. The first side core 3213 is connected to the first slider 3212 near the injection cavity 100. The first slider 3212 is slidably connected to the injection stationary template 34 near the injection template 35. The first spade base 3211 is connected to the injection spade base fixing plate 36, and the first spade base 3211 passes through the injection stationary template 34 and is slidably connected within a through-groove provided in the first slider 3212.

[0034] In this embodiment, the injection mold slider mechanism 33 includes an injection mold base 331, an injection core-pulling slider 332, and an injection angled core-pulling slider 333. The injection angled core-pulling slider 333 is inclined towards the injection mold cavity 100 and connected to the side of the injection core-pulling slider 332 near the injection mold cavity 100. The injection core-pulling slider 332 is slidably connected to the side of the injection template 35 near the injection fixed template 34. The injection mold base 331 is connected to the side of the injection fixed template 34 near the injection template 35. The first inclined guide post groove 3321 is provided on the side of the injection core-pulling slider 332 away from the mold cavity 100. During mold closing, the injection angled core-pulling slider 333 and the injection insert are engaged, preventing the injection insert from deforming during injection molding and improving the quality of the injection molded product.

[0035] In this embodiment, the two-shot mold 4 includes a two-shot fixed template 44, a two-shot moving template 45, and a two-shot shovel base fixing plate 46.

[0036] The second-shot moving mold core 42 is connected to the ejection system 2 via the second-shot moving template 45. The fourth slider mechanism 422 includes a second shovel base 4221, a second slider 4222, and a second side core 4223. The second side core 4223 is connected to the second slider 4222 on the side near the second-shot mold cavity 200. The second slider 4222 is slidably connected to the second-shot fixed template 44 on the side near the second-shot moving template 45. The second shovel base 4221 is connected to the second-shot shovel base fixing plate 46. The second shovel base 4221 passes through the second-shot fixed template 44 and is slidably connected to the through inclined groove provided in the second slider 4222.

[0037] In this embodiment, the two-shot moving mold slider mechanism 43 includes a two-shot moving mold base 431, a two-shot core-pulling slider 432, and a two-shot inclined core-pulling slider 433. The two-shot inclined core-pulling slider 433 is inclined towards the two-shot mold cavity 200 and connected to the two-shot core-pulling slider 432 on the side near the two-shot mold cavity 200. The two-shot core-pulling slider 432 is slidably connected to the two-shot moving template 45 on the side near the two-shot fixed template 44. The two-shot moving mold base 431 is connected to the two-shot fixed template 44 on the side near the two-shot moving template 45. A common inclined guide post 4311 is connected to the two-shot moving mold base 431. The two-shot core-pulling slider 432 is provided with a second inclined guide post groove 4321. The second inclined guide post groove 4321 and the common inclined guide post 4311 are slidably fitted together. The first inclined guide post groove 4321 and the second inclined guide post groove 4321 are symmetrically arranged along the center of the mold.

[0038] like Figure 6-8 The two-color manifold injection mold shown has a first inclined guide post groove 3321 and a second inclined guide post groove 4321, each designed as a through groove with an opening at one end away from the first injection cavity 100. The first and second inclined guide post grooves 3321 and 4321 are each equipped with an elastic limiting mechanism. This elastic limiting mechanism includes a limiting post 444, which is slidably connected to the transverse holes 2221 and 4421 provided in the first and second injection core-pulling sliders 332 and 432, respectively. An elastic element 445 is connected within the transverse holes 2221 and 4421. The limiting post 444 is slidably connected within the transverse holes 2221 and 4421 and abuts against the elastic element 445. The elastic element 445 causes a portion of the limiting post 444 to extend out of the transverse holes 2221 and 4421. The limiting post 444 has a guide surface 4441 away from the elastic element 445. The elastic element 445 is a spring.

[0039] like Figure 9 The two-color manifold injection mold shown has a guide surface 4441 including a first inclined surface 44411 and a second inclined surface 44412. The first inclined surface 44411 is inclined toward the fixed template system 1, and the second inclined surface 44412 is inclined toward the injection cavity 100.

[0040] like Figure 10 The two-color manifold injection mold shown has slots 22211 respectively formed along the side walls of the first inclined guide post slot 3321 and the second inclined guide post slot 4321. The slots 22211 extend parallel to the axis of the common inclined guide post 4311. The slots 22211 are located on the side of the limiting post 444 near the injection cavity 100, and a retaining strip is provided inside the slots 22211. The retaining strip is made of wear-resistant stainless steel and is fixed inside the slots 22211 by side screws. The limiting post 444 has a third inclined surface 44413 near the slots 22211. The third inclined surface 44413 and the retaining strip abut against each other to restrict the rotation of the limiting post 444.

[0041] In this embodiment, the cross-section of the card slot 22211 is set to L-shape, and the card strip and the card slot 22211 are adapted to each other.

[0042] In this embodiment, the first slider mechanism 321 and the second slider mechanism 322 are symmetrically arranged on both sides of the central axis of the first injection mold cavity 100. The first slider mechanism 321 and the second slider mechanism 322 are structurally identical or similarly configured as a shovel-based driven side core-pulling structure. The third slider mechanism 421 and the fourth slider mechanism 422 are symmetrically arranged on both sides of the central axis of the second injection mold cavity 200. The third slider mechanism 421 and the fourth slider mechanism 422 are structurally identical or similarly configured as a shovel-based driven side core-pulling structure.

[0043] The injection molding process of this utility model includes: First injection: The first injection mold 3 and the second injection mold 4 are closed. The first colored molten material is injected into the first injection cavity 100 through the first injection gate. After the molten material fully fills the cavity and is cooled and formed under pressure, the injection molding machine drives the first injection moving platen 35 and the second injection moving platen 45 to move backward synchronously through the ejection system 2, triggering the first injection mold opening action. During mold opening, the first injection core-pulling slider 332 remains stationary. The first shovel base 3211 of the first slider mechanism 321 pushes the first slider 3212 to slide along the first injection fixed platen 34 through the through inclined groove, so that the first side core 3213 is separated from the first injection product. The second slider mechanism 322 simultaneously completes the side core-pulling action on the other side.

[0044] Second Injection: Ejection system 2 rotates the first injection platen 35 and the second injection platen 45 180 degrees. Ejection system 2 drives the first injection platen 35 and the second injection platen 45 to close the mold, and injects the second color melt into the second injection cavity 200 through the second injection gate. During the mold closing process, the common inclined guide post 4311 moves towards the first inclined guide post groove 3321. The common inclined guide post 4311 pushes the limiting post 444 to compress the elastic element 445 through the first inclined surface 44411 and the second inclined surface 44412, so that the limiting post 444 is completely retracted into the hole. After the common inclined guide post 4311 is fully inserted into the first inclined guide post groove 3321, the spring force pushes the limiting post 444 to extend. The limiting post 444 restricts the common inclined guide post 4311 from exiting the first inclined guide post groove laterally, providing conditions for smooth mold opening. During this process, the third inclined surface 44413 fits into the card strip in the card slot 22211, thereby achieving mechanical positioning of the limiting post 444 and preventing the limiting post 444 from rotating.

[0045] After the molten material fully fills the mold cavity and is cooled and molded under pressure, the mold is separated. The injection molding machine drives the first injection platen 35 and the second injection platen 45 to move backward synchronously through the ejection system 2, triggering the second injection mold opening action. The third inclined surface 44413 of the shared inclined guide post 4311 and the limiting post 444 abuts, pushing the first injection mold slider mechanism 33 to slide away from the first injection mold cavity 100, causing the first injection inclined core puller 333 to be pulled out obliquely from the inside of the first injection product. The second shovel base 4221 of the fourth slider mechanism 422 pushes the second slider 4222 to slide along the second injection fixed platen 44 through the through inclined groove, so that the second side core 4223 is separated from the second injection product. The third slider mechanism 421 simultaneously completes the side core pull action on the other side.

[0046] After the core-pulling action is completed, the ejector pin of the ejector system 2 is pushed out along the ejector pin hole of the second injection mold core 42, lifting the first injection product from the first injection mold core 32 and completing the injection molding process.

[0047] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A two-color manifold injection mold, characterized in that: The system includes a fixed template system (1) and an ejection system (2), and a first-shot mold (3) and a second-shot mold (4) located between the fixed template system (1) and the ejection system (2). The first-shot mold (3) includes a first-shot insert connected to the fixed template system (1), a first-shot fixed mold slider mechanism group slidably connected to the fixed template system (1), a first-shot moving mold core (32) and a first-shot moving mold slider mechanism (33) connected to the ejection system (2). The first-shot insert, the first-shot fixed mold slider mechanism group, and the first-shot moving mold core... (32) and a first injection mold slider mechanism (33) form a first injection cavity (100); the second injection mold (4) includes a second injection insert connected to the fixed template system (1), a second injection fixed mold slider mechanism group slidably connected to the fixed template system (1), and a second injection moving mold core (42) and a second injection moving mold slider mechanism (43) connected to the ejection system (2), the second injection insert, the second injection fixed mold slider mechanism group, the second injection moving mold core (42) and the second injection moving mold slider mechanism (43) form a second injection cavity (200); The fixed-mold slider mechanism assembly includes a first slider mechanism (321) located on the side of the first mold cavity (100) near the second mold cavity (200), and a second slider mechanism (322) located on the side of the first mold cavity (100) away from the second mold cavity (200); the moving-mold slider mechanism (33) is located below the first slider mechanism (321); The two-shot fixed mold slider mechanism group includes a third slider mechanism (421) disposed on the side of the two-shot mold cavity (200) close to the first-shot mold cavity (100), and a fourth slider mechanism (422) disposed on the side of the two-shot mold cavity (200) away from the first-shot mold cavity (100); the two-shot moving mold slider mechanism (43) is disposed below the fourth slider mechanism (422); The two-shot mold slider mechanism (43) is connected to a common inclined guide post (4311), and the one-shot mold slider mechanism (33) is provided with a first inclined guide post groove (3321) that is adapted to the common inclined guide post (4311). When the one-shot mold (3) and the two-shot mold (4) are rotated and exchanged positions through the ejection system (2), the common inclined guide post (4311) can be inserted into the first inclined guide post groove (3321) to drive the one-shot mold slider mechanism (33).

2. The two-color manifold injection mold according to claim 1, characterized in that: The injection mold (3) includes an injection fixed template (34), an injection moving template (35), and an injection shovel base fixing plate (36); the injection moving mold core (32) is connected to the ejection system (2) through the injection moving template (35); the first slider mechanism (321) includes a first shovel base (3211), a first slider (3212), and a first side core (3213); the first side core (3213) is connected to the side of the first slider (3212) near the injection cavity (100); the first slider (3212) is slidably connected to the side of the injection fixed template (34) near the injection moving template (35); the first shovel base (3211) is connected to the injection shovel base fixing plate (36); the first shovel base (3211) passes through the injection fixed template (34) and is slidably connected to the through inclined groove provided in the first slider (3212).

3. The two-color manifold injection mold according to claim 2, characterized in that: The injection mold slider mechanism (33) includes an injection mold base (331), an injection core-pulling slider (332), and an injection angled core-pulling slider (333); the injection angled core-pulling slider (333) is inclined toward the injection mold cavity (100) and connected to the side of the injection core-pulling slider (332) near the injection mold cavity (100); the injection core-pulling slider (332) is slidably connected to the side of the injection template (35) near the injection fixed template (34); the injection mold base (331) is connected to the side of the injection fixed template (34) near the injection template (35); the first inclined guide post groove (3321) is provided on the side of the injection core-pulling slider (332) away from the injection mold cavity (100).

4. The two-color manifold injection mold according to claim 3, characterized in that: The two-shot mold (4) includes a two-shot fixed template (44), a two-shot moving template (45), and a two-shot shovel base fixing plate (46). The two-shot moving mold core (42) is connected to the ejection system (2) through the two-shot moving template (45). The fourth slider mechanism (422) includes a second shovel base (4221), a second slider (4222), and a second side core (4223). The second side core (4223) is connected to the side of the second slider (4222) near the two-shot mold cavity (200). The second slider (4222) is slidably connected to the side of the two-shot fixed template (44) near the two-shot moving template (45). The second shovel base (4221) is connected to the two-shot shovel base fixing plate (46). The second shovel base (4221) passes through the two-shot fixed template (44) and is slidably connected to the through inclined groove provided in the second slider (4222).

5. The two-color manifold injection mold according to claim 4, characterized in that: The two-shot moving mold slider mechanism (43) includes a two-shot moving mold base (431), a two-shot core-pulling slider (432), and a two-shot inclined core-pulling mechanism (433); the two-shot inclined core-pulling mechanism (433) is inclined towards the two-shot mold cavity (200) and connected to the two-shot core-pulling slider (432) on the side near the two-shot mold cavity (200); the two-shot core-pulling slider (432) is slidably connected to the two-shot moving template (45) on the side near the two-shot fixed template (44); the two-shot moving mold base (431) 431) Connected to the side of the two-shot fixed template (44) near the two-shot moving template (45); the common inclined guide post (4311) and the two-shot moving mold base (431) are connected, the two-shot core pulling slider (432) is provided with a second inclined guide post groove (4321), the second inclined guide post groove (4321) and the common inclined guide post (4311) are slidably fitted, and the first inclined guide post groove (3321) and the second inclined guide post groove (4321) are symmetrically arranged along the center of the mold.

6. The two-color manifold injection mold according to claim 5, characterized in that: The first inclined guide post groove (3321) and the second inclined guide post groove (4321) are respectively configured as through grooves with an opening at one end away from the first injection mold cavity (100); the first inclined guide post groove (3321) and the second inclined guide post groove (4321) are respectively provided with elastic limiting mechanisms, the elastic limiting mechanisms including limiting posts (444), the limiting posts (444) are respectively slidably connected to the transverse holes provided in the first injection core-pulling slider (332) and the second injection core-pulling slider (432) ( Within the transverse holes (2221, 4421), an elastic element (445) is connected. The limiting post (444) is slidably connected within the transverse holes (2221, 4421) and abuts against the elastic element (445). The elastic element (445) causes the limiting post (444) to partially extend out of the transverse holes (2221, 4421). The limiting post (444) is provided with a guide surface (4441) away from the elastic element (445).

7. The two-color manifold injection mold according to claim 6, characterized in that: The guide surface (4441) includes a first inclined surface (44411) and a second inclined surface (44412); the first inclined surface (44411) is inclined toward the fixed template system (1), and the second inclined surface (44412) is inclined toward the injection cavity (100).

8. The two-color manifold injection mold according to claim 7, characterized in that: A slot (22211) is provided along the side wall of the first inclined guide post groove (3321) and the second inclined guide post groove (4321). The slot (22211) extends parallel to the axis of the common inclined guide post (4311). The slot (22211) is located on the side of the limiting post (444) near the injection cavity (100). A retaining strip is provided in the slot (22211). A third inclined surface (44413) is provided near the slot (22211) of the limiting post (444). The third inclined surface (44413) and the retaining strip are abutted together.

9. The two-color manifold injection mold according to claim 8, characterized in that: The card slot (22211) has an L-shaped cross-section, and the card strip and card slot (22211) are adapted to each other.

10. The two-color manifold injection mold according to claim 4, characterized in that: The first slider mechanism (321) and the second slider mechanism (322) are disposed opposite to each other on both sides of the central axis of the first injection cavity (100), and the third slider mechanism (421) and the fourth slider mechanism (422) are disposed opposite to each other on both sides of the central axis of the second injection cavity (200).

Images