A slider bidirectional movement type headlamp injection molding mold

Abstract

The application relates to a slider bidirectional motion type front headlamp injection molding mold, which comprises a fixed mold plate and a movable mold plate, the fixed mold plate is provided with a cavity, the movable mold plate is provided with a core, the movable mold plate is slidably provided with a first forming block for forming a first connecting rib; the first forming block is slidably provided with a second forming block for forming a second connecting rib; the fixed mold plate is provided with a first inclined rod, the second forming block is provided with a first inclined hole; a second sliding groove is formed in the fixed mold plate, a sliding block is slidably arranged in the second sliding groove, the sliding block is provided with a second inclined rod, the first forming block is provided with a second inclined hole; the fixed mold plate is further provided with a locking mechanism, and the locking mechanism is used for limiting the sliding of the sliding block in the second sliding groove. The timing core-pulling structure of the first forming block and the second forming block is realized, and the smooth molding and demolding of the product are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of molds, and in particular to a slider bidirectional motion headlight injection molding mold. Background Technology

[0002] A type of car headlight, such as Figure 1 and Figure 2 As shown, it is a plastic part formed by injection molding. It includes a first cover 61 and a second cover 62 that are connected to each other, with the second cover 62 enclosing the first cover 61. The front side of the second cover 62 is provided with a first connecting rib 621 and a second connecting rib 622 that are connected to each other.

[0003] When designing the injection mold for automotive headlights, two molding blocks are designed to mold the first connecting rib 621 and the second connecting rib 622 respectively. Due to the shape characteristics of the first connecting rib 621 and the second connecting rib 622, the two molding blocks used to mold them move in different directions during demolding.

[0004] In conventional mold design, two molding blocks with different sliding directions require two independent power systems to control their movement. However, designing two independent power systems would require increasing the volume of the mold to provide enough space for both power systems to be installed.

[0005] Increasing the size of the mold leads to increased mold costs. To control mold costs, a new mold structure needs to be designed, which uses a power system to control the movement of the two forming blocks, so as to achieve the simultaneous forming of the first connecting rib 621 and the second connecting rib 622, and the sequential demolding of the two forming blocks. Summary of the Invention

[0006] This application provides a slider bidirectional motion headlight injection molding mold, which ensures smooth product molding and demolding by realizing the sequential core-pulling structure of the first molding block and the second molding block.

[0007] The technical solution of the slider-type bidirectional motion headlight injection molding die provided in this application is as follows:

[0008] A sliding bidirectional motion headlight injection molding die includes a fixed mold plate and a movable mold plate. The fixed mold plate has a cavity, and the movable mold plate has a core. The movable mold plate has a first groove and a first molding block. The first molding block is used to form a first connecting rib. The first molding block is slidably disposed in the first groove, and the first groove defines the sliding direction of the first molding block. A second molding block is slidably disposed on the first molding block, and the second molding block is used to form a second connecting rib.

[0009] The fixed template is provided with a first inclined rod, and the second forming block is provided with a first inclined hole; during the mold closing process, the first inclined rod is inserted into the first inclined hole to drive the second forming block to move closer to the core; during the mold opening process, the first inclined rod is disengaged from the first inclined hole to drive the second forming block to move away from the second connecting rib.

[0010] The fixed template has a second groove, and a slider is slidably disposed in the second groove. The slider has a second inclined rod, and the first forming block has a second inclined hole. When the mold is in the closed state, the second inclined rod is inserted into the second inclined hole, and the slider is located on the side of the second groove away from the cavity. During the mold opening process, the second inclined rod gradually moves in the direction of disengaging from the second inclined hole, driving the slider closer to the cavity to keep the first forming block stationary relative to the core. When the slider moves to the side wall of the second groove near the cavity, the second inclined rod continues to move in the direction of disengaging from the second inclined hole, driving the first forming block to move along the first groove away from the core, thereby separating from the product. When the slider abuts the side wall of the second groove near the cavity, the first inclined rod has disengaged from the first inclined hole.

[0011] The fixed template is also provided with a locking mechanism, which is used to restrict the sliding of the slider in the second groove. During the mold closing process, before the second inclined rod moves to contact the wall of the second inclined hole, the locking mechanism restricts the sliding of the slider so that when the second inclined rod is inserted into the second inclined hole, it can drive the first molding block to move and reset. After the first molding block moves and resets, the locking mechanism releases the restriction on the slider, so that the slider can slide away from the cavity. During the sliding of the second inclined rod in the second inclined hole, it does not drive the first molding block to move. After the first molding block moves and resets, the first inclined rod is inserted into the first inclined hole and drives the second molding block to move and reset.

[0012] By adopting the above technical solution, during the mold opening process, the first and second molding blocks move away from the fixed mold along with the moving template. During this process, the first inclined rod moves away from the first inclined hole and drives the second molding block away from the second connecting rib. The second inclined rod slides within the second inclined hole, driving the slider closer to the cavity to keep the first molding block stationary relative to the core. After the first inclined rod moves away from the first inclined hole and the slider moves to contact the side wall of the second slide near the cavity, the second inclined rod remains within the second inclined hole. Subsequently, when the moving template moves away from the fixed mold, the second inclined rod slides within the second inclined hole and drives the first molding block away from the first connecting rib. This structure achieves sequential core pulling and demolding of the two molding blocks during mold opening, ensuring the formation of the first and second connecting ribs while solving the problems of undercutting of the first and second connecting ribs during mold opening.

[0013] During the subsequent mold closing process, the locking mechanism first restricts the sliding of the slider. Then, the second inclined rod inserts into the second inclined hole, converting the mold closing force into the power of the first molding block, driving it to move towards the core, eventually causing the first molding block to contact the core. When the first molding block contacts the core, the locking mechanism releases the sliding restriction on the slider. Subsequently, as the moving mold plate continues to move, the second inclined rod slides within the second inclined hole but does not drive the first molding block to move, while the slider slides away from the cavity. As the moving mold plate continues to move, the first inclined rod inserts into the first inclined hole, driving the second molding block to move and reset.

[0014] Preferably, the locking mechanism includes a limiting groove one formed on the side wall of the second slide groove, a limiting rod slidably disposed in the second inclined rod, and a driving part two disposed on the second inclined rod for driving the limiting rod to slide. When the slider moves to abut against the side wall of the second slide groove near the cavity, the limiting rod is facing the limiting groove one, and the limiting rod can be slidably inserted into the limiting groove one.

[0015] By adopting the above technical solution, when the slider moves to abut against the side wall of the second slide near the cavity, the limiting rod can be inserted into the limiting groove under the action of the second driving part.

[0016] Preferably, the second driving part includes a spring disposed on the second inclined rod, a push block slidably disposed on the second inclined rod, and a mating block disposed on the side of the first forming block away from the moving template; the elastic force of the spring acts on the limiting rod, which always drives the limiting rod to move toward the moving template, so that the end of the limiting rod near the fixed template does not protrude from the slider when the mold is in the mold-open state; the push block is disposed at the end of the second inclined rod away from the slider, and the end of the limiting rod away from the slider abuts against the push block; during the mold closing process, before the second inclined rod moves to contact the hole wall of the second inclined hole, the push block will collide with the mating block and move into the second inclined rod. When the push block moves into the second inclined rod, it will push the limiting rod to move, so that the limiting rod inserts into the limiting groove and the spring is compressed.

[0017] By adopting the above technical solution, the slider is automatically locked during the mold opening and closing process, so that the second inclined rod can drive the first molding block to move at the accurate time point, ensuring the timing of the movement between the first molding block and the second molding block.

[0018] Preferably, the second inclined rod has a placement hole, and the limiting rod has an integrally formed abutment ring. The abutment ring is slidably disposed in the placement hole. The spring is disposed in the placement hole and sleeved on the outside of the limiting rod. The spring is located on the side of the abutment ring away from the moving template. The two ends of the spring abut against the slider and the abutment ring respectively. When the mold is in the open state, the spring presses the abutment ring against the bottom wall of the placement hole to restrict the movement of the limiting rod out of the slider.

[0019] By adopting the above technical solution, the installation of the spring is facilitated.

[0020] Preferably, one end face of the push block is a spherical surface, and the other end face of the push block is an inclined surface. The spherical surface of the push block extends out of the second inclined rod and is used to abut against the first forming block and the mating block. The inclined surface of the push block is located inside the second inclined rod, and the end of the limiting rod away from the second sliding groove is in contact with the inclined surface of the push block.

[0021] By adopting the above technical solution, when the pusher moves to collide with the first forming block, it can smoothly slide into the second inclined rod, and at the same time, it can smoothly push the limiting rod to slide.

[0022] Preferably, the locking mechanism includes a second limiting groove formed on the slider, a first limiting block slidably disposed on the fixed template, and a first driving part for driving the first limiting block to slide. When the slider moves to abut against the side wall of the second slide near the cavity, the second limiting groove is directly opposite the first limiting block. The first limiting block can be slidably inserted into the second limiting groove to restrict the sliding of the slider.

[0023] By adopting the above technical solution, after the slider moves to abut against the side wall of the second groove near the cavity, the driving part drives the limiting block to slide into the limiting block one, so that the limiting block restricts the slider from sliding.

[0024] Preferably, the drive unit includes a hydraulic cylinder disposed on the fixed template, the hydraulic cylinder being located on the side of the limiting block away from the moving template, and the limiting block being connected to the telescopic shaft of the hydraulic cylinder.

[0025] By adopting the above technical solution, the extension drive of the hydraulic cylinder's telescopic shaft can drive the first limiting block to slide into the second limiting groove, and the retraction drive of the hydraulic cylinder's telescopic shaft can drive the first limiting block to slide out of the second limiting groove.

[0026] The main technical effects of this invention are reflected in the following aspects:

[0027] 1. This invention ensures smooth molding and demolding of the product by implementing a sequential core-pulling structure for the first molding block and the second molding block;

[0028] 2. This invention controls the sliding of the limiting block one with a hydraulic cylinder, enabling the limiting block one to precisely insert into the limiting groove two at the required time point during mold opening and closing, thereby restricting the sliding of the slider. Using a hydraulic cylinder as the driving unit one results in a simple structure and convenient installation.

[0029] 3. This invention restricts the sliding of the slider by setting components such as push blocks and limit rods. Compared with the driving mechanism of hydraulic cylinders, the push blocks and other components are lower in cost as the driving mechanism, and there are no risks such as oil leakage and action delay. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the headlight structure.

[0031] Figure 2 This is a schematic diagram of the second cover.

[0032] Figure 3 This is a schematic diagram of the mold closing mechanism in Example 1.

[0033] Figure 4 This is a schematic diagram of the lower mold body.

[0034] Figure 5 yes Figure 4 A structural schematic diagram of the first molding block, the second molding block, the first cover, and the second cover.

[0035] Figure 6 This is a structural schematic diagram of the first molding block and the second molding block from another angle.

[0036] Figure 7 This is a schematic diagram of the upper mold body.

[0037] Figure 8 yes Figure 3 A cross-sectional view of the middle mold along line AA.

[0038] Figure 9 yes Figure 8 A magnified view of a section at point B.

[0039] Figure 10 yes Figure 8 A magnified view of a section at point C.

[0040] Figure 11 This is a partial structural diagram of the mold when the push block moves to the point of contact with the mating block during the mold closing process, and the second inclined rod does not move to the point of contact with the wall of the second inclined hole.

[0041] Figure 12 yes Figure 11 A magnified view of a section at point D.

[0042] Figure 13 This is a schematic diagram of the mold structure in Example 2.

[0043] Figure 14 yes Figure 13 A cross-sectional view of the middle mold along line EE.

[0044] Figure 15 yes Figure 14 A magnified view of a section at point F.

[0045] Reference numerals: 1. Fixed template; 11. Cavity; 12. First inclined rod; 13. Second slide groove; 14. Slider; 15. Second inclined rod; 151. Placement hole; 2. Moving template; 21. Core; 22. First forming block; 221. Second inclined hole; 23. Second forming block; 231. First inclined hole; 24. First slide groove; 3. Locking mechanism; 31. Limiting groove one; 32. Limiting rod; 33. Limiting groove two; 34. Limiting block one; 35. Drive unit one; 351. Hydraulic cylinder; 4. Drive unit two; 41. Spring; 42. Push block; 421. Spherical surface; 422. Inclined surface; 43. Mating block; 5. Abutment ring; 61. First cover; 62. Second cover; 621. First connecting rib; 622. Second connecting rib. Detailed Implementation

[0046] The present invention will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this application can be more easily understood and mastered.

[0047] Reference Figures 1-6 Example 1: This embodiment describes a slider-type bidirectional motion headlight injection molding die, including a fixed mold plate 1 and a movable mold plate 2. The fixed mold plate 1 has a cavity 11, and the movable mold plate 2 has a core 21. The movable mold plate 2 has a first sliding groove 24 and a first molding block 22. The first molding block 22 is used to mold a first connecting rib 621; the first molding block 22 is slidably disposed in the first sliding groove 24, and the first sliding groove 24 is used to limit the sliding direction of the first molding block 22. A second molding block 23 for molding a second connecting rib 622 is slidably disposed on the first molding block 22.

[0048] Reference Figure 4 and Figure 7 The mold plate 1 is provided with a first inclined rod 12, and the second forming block 23 is provided with a first inclined hole 231. When the mold is closed, the first inclined rod 12 is inserted into the first inclined hole 231 to drive the second forming block 23 to move closer to the core 21. When the mold is opened, the first inclined rod 12 is disengaged from the first inclined hole 231 to drive the second forming block 23 to move away from the second connecting rib 622.

[0049] Reference Figure 4 , Figures 7-9 A second groove 13 is provided on the side of the fixed template 1 facing the moving template 2. A slider 14 is slidably disposed in the second groove 13 along the mold opening direction perpendicular to the mold. A second inclined rod 15 is provided on the slider 14, and a second inclined hole 221 is provided on the first forming block 22. When the mold is in the mold closed state, the slider 14 is located on the side of the second groove 13 away from the cavity 11, and the second inclined rod 15 is inserted into the second inclined hole 221.

[0050] Reference Figures 8-10During the mold opening process, the second inclined rod 15 gradually moves in the direction of disengaging from the second inclined hole 221, driving the slider 14 closer to the cavity 11 to keep the first molding block 22 stationary relative to the core 21. When the slider 14 moves to abut against the side wall of the second slide groove 13 near the cavity 11, the second inclined rod 15 continues to move in the direction of disengaging from the second inclined hole 221, driving the first molding block 22 to move along the first slide groove 24 away from the core 21, thereby detaching from the product. When the slider 14 moves to abut against the side wall of the second slide groove 13 near the cavity 11, the first inclined rod 12 has already moved out of the first inclined hole 231.

[0051] Reference Figures 8-10 The fixed template 1 is also equipped with a locking mechanism 3, which restricts the sliding of the slider 14 within the second slide groove 13. During mold closing, before the second inclined rod 15 moves to contact the wall of the second inclined hole 221, the locking mechanism 3 restricts the sliding of the slider 14 so that the second inclined rod 15 can drive the first molding block 22 to move and reset when it is inserted into the second inclined hole 221. After the first molding block 22 moves and resets, the locking mechanism 3 releases the restriction on the slider 14, allowing the slider 14 to slide away from the cavity 11. During the sliding of the second inclined rod 15 within the second inclined hole 221, the first molding block 22 does not move. After the first molding block 22 moves and resets, the second molding block 23 moves to a predetermined position, at which point the opening of the first inclined hole 231 near the fixed template 1 is directly opposite the end of the first inclined rod 12 away from the fixed template 1. Subsequently, during the movement of the moving template 2 towards the fixed template 1, the first inclined rod 12 inserts into the first inclined hole 231, driving the second molding block 23 to move and reset.

[0052] Reference Figures 8-10 The locking mechanism 3 includes a limiting groove 31 formed on the side wall of the second slide groove 13, a limiting rod 32 slidably disposed within the second inclined rod 15 along its length, and a driving part 4 disposed on the second inclined rod 15 for driving the limiting rod 32 to slide. When the slider 14 moves to abut against the side wall of the second slide groove 13 near the cavity 11, the limiting rod 32 is aligned with the limiting groove 31, and the driving part 4 drives the limiting rod 32 to slide, so that the limiting rod 32 is inserted into the limiting groove 31.

[0053] Reference Figures 8-10The driving unit 4 includes a spring 41 mounted on the second inclined rod 15, a pusher 42 slidably mounted on the second inclined rod 15, and a mating block 43 mounted on the side of the first forming block 22 away from the moving template 2. A placement hole 151 is provided on the end of the second inclined rod 15 near the slider 14. A retaining ring 5 is integrally formed on the limiting rod 32 and slidably mounted within the placement hole 151. The spring 41 is located within the placement hole 151 and sleeved on the outside of the limiting rod 32. The spring 41 is located on the side of the retaining ring 5 away from the moving template 2, and both ends of the spring 41 abut against the slider 14 and the retaining ring 5, respectively. When the mold is in the open state, the spring 41 presses the retaining ring 5 against the bottom wall of the placement hole 151 to restrict the movement of the end of the limiting rod 32 near the fixed template 1 from extending out of the slider 14.

[0054] Reference Figures 8-10 The push block 42 is located at the end of the second inclined rod 15 away from the slider 14. One end face of the push block 42 is a spherical surface 421, and the other end face of the push block 42 is an inclined surface 422. The spherical surface 421 of the push block 42 extends out of the second inclined rod 15 and is used to abut against the first forming block 22. The inclined surface 422 of the push block 42 is located inside the second inclined rod 15. The end of the limiting rod 32 away from the second slide groove 13 abuts against and fits against the inclined surface 422 of the push block 42.

[0055] Reference Figures 11-12 During the mold closing process, before the second inclined rod 15 contacts the wall of the second inclined hole 221, the push block 42 moves and collides with the first forming block 22 and moves into the second inclined rod 15. When the push block 42 moves into the second inclined rod 15, it drives the limiting rod 32 and the abutment ring 5 to move towards the fixed template 1, so that the end of the limiting rod 32 extends out of the slider 14 and inserts into the limiting groove 31, and the abutment ring 5 abuts against the spring 41. During the mold closing process, the second inclined rod 15 will not collide with the mating block 43.

[0056] Reference Figures 4-12 The complete mold opening and closing process in this embodiment is as follows:

[0057] First, the injection molding machine controls the mold to close, causing the moving platen 2 to move closer to the fixed platen 1. During the mold closing process, before the second inclined rod 15 moves to contact the wall of the second inclined hole 221, the spherical surface 421 of the push block 42 will first abut against the mating block 43, and the push block 42 will move into the second inclined rod 15. When the push block 42 moves into the second inclined rod 15, the push block 42 will drive the limiting rod 32 and the abutment ring 5 to slide closer to the fixed platen 1 through the inclined surface 422, so that the limiting rod 32 inserts into the limiting groove 31 and the abutment ring 5 presses against the spring 41.

[0058] After the limiting rod 32 is inserted into the limiting groove 31, the slider 14 can no longer slide. If the second slider 14 moves with the moving template 2, the second inclined rod 15 will move and insert into the second inclined hole 221, and convert the mold closing force into the force that drives the first molding block 22 to slide, driving the first molding block 22 to slide in the first sliding groove 24, so that the first molding block 22 moves closer to the core 21.

[0059] When the push block 42 enters the opening at the top of the second inclined hole 221, it abuts against the second forming block 23 and continues to move into the second inclined rod 15, causing the limiting rod 32 to extend into the limiting groove 31. Subsequently, as the moving template 2 moves, the push block 42 will move out of the second inclined hole 221. During the process of the push block 42 moving out of the opening at the bottom of the second inclined hole 221, the spring 41 will rebound and drive the limiting rod 32 to slide into the second inclined rod 15, thereby moving away from the limiting groove 31.

[0060] As the limiting rod 32 moves into the second inclined rod 15, it pushes the push block 42 out of the second inclined rod 15, causing the spherical surface 421 of the push block 42 to contact the bottom opening of the second inclined hole 221. When the spherical surface 421 of the push block 42 just moves out of the bottom opening of the second inclined hole 221, the limiting rod 32 also moves out of the limiting groove 31, no longer restricting the sliding of the slider 14. At this time, the opening of the first inclined hole 231 near the fixed template 1 is directly opposite the end of the first inclined rod 12 away from the fixed template 1.

[0061] As the moving template 2 continues to move closer to the fixed template 1, the second inclined rod 15 slides within the second inclined hole 221 but does not drive the first molding block 22 to move, while the slider 14 slides away from the cavity 11. After the moving template 2 continues to move a certain distance, the first inclined rod 12 inserts into the first inclined hole 231, thereby driving the second molding block 23 to move and reset. During this process, the slider 14 slides within the second groove 13 and moves away from the cavity 11, while the second inclined rod 15 slides within the second inclined hole 221 but does not drive the first molding block 22 to move.

[0062] Finally, the mold closes, and the second molding block 23 moves to the predetermined position. Then, the injection molding machine injects hot melt plastic into the mold, so that the plastic fills the cavity between the core 21 and the cavity 11, thus forming the product. After the product is formed, the injection molding machine controls the mold to open. When the mold opens, the moving platen 2 moves away from the fixed platen 1.

[0063] When the moving template 2 moves away from the fixed template 1, the first inclined rod 12 disengages from the first inclined hole 231, and the second inclined rod 15 disengages from the second inclined hole 221. When the first inclined rod 12 disengages from the first inclined hole 231, it drives the second molding block 23 to slide, causing the second molding block 23 to move away from the second connecting rib 622, thus releasing the undercut structure between the second molding block 23 and the second connecting rib 622. During the process of the first inclined rod 12 disengaging from the first inclined hole 231, the second inclined rod 15 slides within the second inclined hole 221, driving the slider 14 closer to the cavity 11 to keep the first molding block 22 stationary relative to the core 21.

[0064] When the first inclined rod 12 moves away from the first inclined hole 231, the slider 14 has not yet moved to contact the side wall of the second slide groove 13 near the cavity 11. Then, as the moving template 2 moves, the slider 14 will move to contact the side wall of the second slide groove 13 near the cavity 11. At this time, the second inclined rod 15 will still be in the second inclined hole 221. After the slider 14 contacts the side wall of the second slide groove 13, the moving template 2 will continue to move, and the second inclined rod 15 will slide in the second inclined hole 221 and drive the first molding block 22 and the second molding block 23 to move away from the core 21, releasing the undercut structure between the first molding block 22 and the first connecting rib 621.

[0065] Once the second inclined rod 15 has completely disengaged from the second inclined hole 221, the second molding block 23 will also stop moving. After the mold is fully opened, the technician can remove the product located on the core 21, completing the injection molding production of one product.

[0066] Example 2: The difference from Example 1 is the different locking mechanism 3.

[0067] Reference Figures 13-15 The locking mechanism 3 includes a second limiting groove 33 formed on the slider 14 and a first limiting block 34 slidably disposed on the fixed template 1 along the mold opening direction. When the slider 14 moves to abut against the side wall of the second slide groove 13 near the cavity 11, the second limiting groove 33 is directly opposite the first limiting block 34, and the second limiting groove 33 is located on the side of the first limiting block 34 near the moving template 2. The first limiting block 34 can be slidably inserted into the second limiting groove 33 to restrict the sliding of the slider 14.

[0068] Reference Figures 13-15 The locking mechanism 3 also includes a drive unit 35 for driving the limit block 34 to slide. The drive unit 35 includes a hydraulic cylinder 351 disposed on the fixed template 1. The hydraulic cylinder 351 is located on the side of the limit block 34 away from the moving template 2. The limit block 34 is connected to the telescopic shaft of the hydraulic cylinder 351.

[0069] Reference Figures 13-15 The complete mold opening and closing mechanism in this embodiment is as follows:

[0070] First, the injection molding machine controls the mold to close, causing the moving platen 2 to move closer to the fixed platen 1. In this state, the slider 14 is in contact with the side wall of the second slide groove 13 near the cavity 11, and the limiting block 34 is directly opposite the limiting groove 33. During the mold closing process, before the second inclined rod 15 moves to contact the hole wall of the second inclined hole 221, the telescopic shaft of the hydraulic cylinder 351 extends and drives the limiting block 34 to slide towards the moving platen 2, so that the limiting block 34 inserts into the limiting groove 33, thereby restricting the sliding of the slider 14.

[0071] Subsequently, as the moving template 2 moves, the second inclined rod 15 inserts into the second inclined hole 221. The second inclined rod 15 converts the kinetic energy of the moving template 2 into the kinetic energy of the first molding block 22, thereby driving the first molding block 22 and the second molding block 23 to move closer to the core 21. After the first molding block 22 moves to the point of contact with the core 21, the telescopic shaft of the hydraulic cylinder 351 retracts, driving the first limiting block 34 to slide out of the second limiting groove 33, thereby releasing the sliding restriction on the slider 14.

[0072] Subsequently, the moving template 2 continues to move closer to the fixed template 1. During this process, the second inclined rod 15 slides freely within the second inclined hole 221, while the slider 14 slides away from the cavity 11. After the moving template 2 has moved a short distance, the first inclined rod 12 inserts into the first inclined hole 231. During the insertion of the first inclined rod 12 into the first inclined hole 231, the first inclined rod 12 drives the second molding block 23 to slide, causing the second molding block 23 to move closer to the core 21. When the mold is fully closed, the second molding block 23 also moves to the predetermined molding position.

[0073] Then, the injection molding machine injects hot-melt plastic into the mold, filling the cavity between the core 21 and the cavity 11, thus forming the product. After the product is formed, the injection molding machine controls the mold to open. When the mold opens, the moving platen 2 moves away from the fixed platen 1. When the moving platen 2 moves away from the fixed platen 1, the first inclined rod 12 disengages from the first inclined hole 231, and the second inclined rod 15 disengages from the second inclined hole 221. When the first inclined rod 12 disengages from the first inclined hole 231, it drives the second molding block 23 to slide, so that the second molding block 23 moves away from the second connecting rib 622. During the process of the first inclined rod 12 disengaging from the first inclined hole 231, the second inclined rod 15 gradually moves in the direction of disengaging from the second inclined hole 221, driving the slider 14 closer to the cavity 11 to keep the first molding block 22 stationary relative to the core 21.

[0074] When the first inclined rod 12 moves away from the first inclined hole 231, the slider 14 has not yet moved to contact the side wall of the second slide groove 13 near the cavity 11. Then, as the moving template 2 moves, the slider 14 will move to contact the side wall of the second slide groove 13 near the cavity 11. At this time, the second inclined rod 15 will still be in the second inclined hole 221. After the slider 14 contacts the side wall of the second slide groove 13, the moving template 2 will continue to move, and the second inclined rod 15 will slide in the second inclined hole 221 and drive the first molding block 22 and the second molding block 23 to move away from the core 21, releasing the undercut structure between the first molding block 22 and the first connecting rib 621.

[0075] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. A sliding block bidirectional motion headlight injection molding die, comprising a fixed mold plate (1) and a moving mold plate (2), wherein the fixed mold plate (1) is provided with a cavity (11) and the moving mold plate (2) is provided with a core (21), characterized in that: The moving template (2) is provided with a first sliding groove (24) and a first forming block (22). The first forming block (22) is used to form a first connecting rib (621). The first forming block (22) is slidably disposed in the first sliding groove (24), and the first sliding groove (24) limits the sliding direction of the first forming block (22). A second forming block (23) is slidably disposed on the first forming block (22). The second forming block (23) is used to form a second connecting rib (622). The fixed template (1) is provided with a first inclined rod (12), and the second forming block (23) is provided with a first inclined hole (231). During the mold closing process, the first inclined rod (12) is inserted into the first inclined hole (231) to drive the second forming block (23) to move closer to the core (21). During the mold opening process, the first inclined rod (12) is disengaged from the first inclined hole (231) to drive the second forming block (23) to move away from the second connecting rib (622). The fixed template (1) is provided with a second slide groove (13), and a slider (14) is slidably disposed in the second slide groove (13). The slider (14) is provided with a second inclined rod (15), and the first forming block (22) is provided with a second inclined hole (221). When the mold is in the mold-closed state, the second inclined rod (15) is inserted into the second inclined hole (221), and the slider (14) is located on the side of the second slide groove (13) away from the cavity (11). During the mold opening process, the second inclined rod (15) gradually moves in the direction of disengaging from the second inclined hole (221), driving the mold to open. The slider (14) approaches the cavity (11) to keep the first molding block (22) stationary relative to the core (21); when the slider (14) moves to abut against the side wall of the second slide groove (13) near the cavity (11), the second inclined rod (15) continues to move in the direction of disengaging from the second inclined hole (221), driving the first molding block (22) to move along the first slide groove (24) away from the core (21), thereby disengaging from the product; when the slider (14) abuts against the side wall of the cavity (11) near the second slide groove (13), the first inclined rod (12) has disengaged from the first inclined hole (231); The fixed template (1) is also provided with a locking mechanism (3), which is used to restrict the slider (14) from sliding in the second groove (13). During the mold closing process, before the second inclined rod (15) moves to contact the hole wall of the second inclined hole (221), the locking mechanism (3) restricts the slider (14) from sliding so that when the second inclined rod (15) is inserted into the second inclined hole (221), it can drive the first molding block (22) to move and reset. After the first molding block (22) moves and resets, the locking mechanism (3) removes the restriction on the slider (14) so ​​that the slider (14) can slide away from the cavity (11). The second inclined rod (15) does not drive the first molding block (22) to move during the sliding process in the second inclined hole (221). After the first molding block (22) moves and resets, the first inclined rod (12) is inserted into the first inclined hole (231) and drives the second molding block (23) to move and reset.

2. The slider bidirectional motion headlight injection molding die according to claim 1, characterized in that: The locking mechanism (3) includes a limiting groove (31) opened on the side wall of the second slide groove (13), a limiting rod (32) slidably disposed in the second inclined rod (15), and a driving part (4) disposed on the second inclined rod (15) for driving the limiting rod (32) to slide. When the slider (14) moves to abut against the side wall of the second slide groove (13) near the cavity (11), the limiting rod (32) is facing the limiting groove (31), and the limiting rod (32) can be slidably inserted into the limiting groove (31).

3. The slider bidirectional motion headlight injection molding die according to claim 2, characterized in that: The second driving part (4) includes a spring (41) disposed on the second inclined rod (15), a push block (42) slidably disposed on the second inclined rod (15), and a mating block (43) disposed on the side of the first forming block (22) away from the moving template (2); the elastic force of the spring (41) acts on the limiting rod (32), which always drives the limiting rod (32) to move toward the moving template (2), so that when the mold is in the mold-open state, the end of the limiting rod (32) near the fixed template (1) does not extend out of the slider (14); the push block (42) is disposed on the second inclined rod (15) At the end away from the slider (14), the end of the limiting rod (32) away from the slider (14) abuts against the push block (42); during the mold closing process, before the second inclined rod (15) moves to contact the hole wall of the second inclined hole (221), the push block (42) will collide with the mating block (43) and move into the second inclined rod (15). When the push block (42) moves into the second inclined rod (15), it will push the limiting rod (32) to move, so that the limiting rod (32) is inserted into the limiting groove (31) and the spring (41) is compressed.

4. The slider bidirectional motion headlight injection molding die according to claim 3, characterized in that: The second inclined rod (15) has a placement hole (151), and the limiting rod (32) has an integrally formed a stop ring (5). The stop ring (5) is slidably disposed in the placement hole (151). The spring (41) is disposed in the placement hole (151) and sleeved on the outside of the limiting rod (32). The spring (41) is located on the side of the stop ring (5) away from the moving template (2). The two ends of the spring (41) respectively abut against the slider (14) and the stop ring (5). When the mold is in the open state, the spring (41) presses the stop ring (5) against the bottom wall of the placement hole (151) to restrict the movement of the limiting rod (32) from extending out of the slider (14).

5. The slider bidirectional motion headlight injection molding die according to claim 4, characterized in that: The end face of one end of the push block (42) is a spherical surface (421), and the end face of the other end of the push block (42) is a sloped surface (422). The spherical surface (421) of the push block (42) extends out of the second inclined rod (15) and is used to abut against the first forming block (22) and the mating block (43). The sloped surface (422) of the push block (42) is located inside the second inclined rod (15). The end of the limiting rod (32) away from the second slide groove (13) is in contact with the sloped surface (422) of the push block (42).

6. The slider bidirectional motion headlight injection molding die according to claim 1, characterized in that: The locking mechanism (3) includes a second limiting groove (33) opened on the slider (14), a first limiting block (34) slidably disposed on the fixed template (1), and a first driving part (35) for driving the first limiting block (34) to slide. When the slider (14) moves to abut against the side wall of the second slide groove (13) near the cavity (11), the second limiting groove (33) is directly opposite the first limiting block (34). The first limiting block (34) can be slidably inserted into the second limiting groove (33) to restrict the sliding of the slider (14).

7. The slider bidirectional motion headlight injection molding die according to claim 6, characterized in that: The drive unit (35) includes a hydraulic cylinder (351) mounted on the fixed template (1). The hydraulic cylinder (351) is located on the side of the limiting block (34) away from the moving template (2). The limiting block (34) is connected to the telescopic shaft of the hydraulic cylinder (351).

Images