A multi-point side-sliding forming structure of an injection mold for a plastic front-shield of an electric vehicle

Abstract

The application relates to a multi-point side-sliding forming structure of an injection mold for a plastic front-shield of an electric vehicle, which comprises an upper mold body and a lower mold body, the upper mold body comprises an upper fixed plate and a fixed mold plate, the lower mold body comprises a movable mold plate, two forming blocks one are slidably connected to the movable mold plate, two forming blocks two, two power blocks and two forming blocks three are slidably connected to the fixed mold plate, the power blocks are provided with a first inclined groove and two second inclined grooves, the two forming blocks two and the two forming blocks three are slidably matched with the first inclined groove and the second inclined grooves respectively, two forming blocks four are arranged on the forming blocks one, and forming blocks five are slidably connected to the forming blocks four. The segmented side-sliding core-pulling demolding of the multi-block forming blocks is realized by the mold opening action.

Description

Technical Field

[0001] This invention relates to the field of molds, and in particular to a multi-point side-sliding molding structure for injection molding of a plastic front cover for electric vehicles. Background Technology

[0002] A type of plastic front grille for electric vehicles, such as Figures 1-3 As shown, the device includes a cover 8, with two symmetrically arranged mating grooves 81 on the top. Slots 82 are provided on both side walls of the cover 8, and multiple snap fasteners 83 are formed on the slots 82. Two assembly grooves 84 are symmetrically arranged on one side wall of the cover 8. Two assembly grooves 85 are provided on the inner wall of the cover 8, and the two assembly grooves 85 are respectively connected to the two assembly grooves 84. Through holes 86 are obliquely formed on the groove walls of the two assembly grooves 85, penetrating the cover 8.

[0003] Because of the positional relationship between slot 82 and assembly slot 84, the multiple molding blocks used to form both on the mold will hinder the demolding of cover 8. Therefore, before demolding cover 8, it is necessary to drive the multiple molding blocks to move away from cover 8. In the mold, the side-pulling demolding of the molding blocks is generally controlled by a hydraulic cylinder. The movement of the molding blocks is controlled by the hydraulic cylinder by connecting the core-pulling block to the telescopic shaft of the hydraulic cylinder.

[0004] However, if a hydraulic cylinder is used as the driving unit, the size of the mold will increase, which will require a larger injection molding machine and increase the injection molding cost. Summary of the Invention

[0005] This application provides a multi-point side-sliding molding structure for injection molding of plastic protective covers for the front of an electric vehicle. The invention utilizes the mold opening action to achieve segmented side-sliding core pulling and demolding of multiple molding blocks.

[0006] The technical solution provided in this application for a multi-point side-sliding molding structure for a plastic front cover of an electric vehicle adopts the following:

[0007] A multi-point side-sliding molding structure for a plastic front grille of an electric vehicle includes an upper mold body and a lower mold body. The upper mold body includes an upper fixed plate and a fixed template, and the lower mold body includes a movable template.

[0008] The upper fixed plate is provided with multiple connecting columns, and the fixed template is slidably connected to the multiple connecting columns. Multiple driving springs are provided between the fixed template and the upper fixed plate. The two ends of the driving springs abut against the fixed template and the upper fixed plate respectively. During mold injection, the upper fixed plate is pressed against the fixed template by the clamping force of the injection molding machine so that the multiple driving springs are in a compressed state.

[0009] Two forming blocks are slidably connected to the moving template. The forming blocks are used to form slots and multiple buckles. The fixed template is provided with multiple inclined rods. The forming blocks are provided with multiple inclined holes for the inclined rods to be inserted. When the mold is opened, the inclined rods drive the forming blocks to slide away from the cover.

[0010] Two forming blocks are slidably connected to the fixed template. The forming blocks are used to form the mating groove. Two power blocks are slidably connected inside the fixed template. Both power blocks are connected to the upper fixed plate. The power blocks are provided with a first inclined groove. One end of the forming block is slidably connected in the first inclined groove. When the power blocks move relative to the fixed template, they drive the forming blocks to slide laterally away from the mating groove through the first inclined groove.

[0011] Two forming blocks 3 are slidably connected to the fixed template. Two second inclined grooves are opened on the power block. One side end of the two forming blocks 3 is slidably connected in the two second inclined grooves respectively. Two forming blocks 4 are provided on the forming block 1. A forming block 5 is slidably connected to the forming block 4. The forming block 5 is used to form the assembly groove 2. The forming blocks 3, 4, and 5 cooperate with each other to form the assembly groove 1.

[0012] The molding block four is provided with a first driving mechanism for driving the molding block five to slide. When the power block moves relative to the fixed template, it drives the molding block three to slide laterally through the second inclined groove, disengaging from the assembly groove one. A retraction space is formed in the assembly groove one for the molding block five to move.

[0013] A forming rod is slidably connected to the forming block, the forming rod is used to form a through hole, and a second driving mechanism is provided on the forming block for driving the forming rod to slide.

[0014] By adopting the above technical solution, after the cover body is injection molded, the injection molding machine controls the mold to open, causing the lower mold body to move away from the upper mold body. In the initial stage of mold opening, under the rebound force of multiple drive springs, the fixed mold plate moves away from the upper fixed plate along with the lower mold body. During this process, two power blocks slide within the fixed mold plate. As the two power blocks slide, they drive molding block two to slide through two first inclined grooves and two molding block three to slide through two second inclined grooves, causing molding block two and two molding block three to move away from the cover body, releasing the undercut structure between molding block two and the two mating grooves, as well as between molding block three and the two assembly grooves. After molding block three moves away from the cover body, two sets of first drive mechanisms drive molding block five to slide into the retraction space to release the undercut structure between molding block five and assembly groove two. Two sets of second drive mechanisms drive two molding rods to slide to release the undercut structure between the molding rods and the perforations.

[0015] After the multiple drive springs stop pushing the fixed template, the lower mold will separate from the fixed template. During this process, multiple diagonal rods drive the two molding blocks to move away from the cover, releasing the undercut structure between the two molding blocks and the slot, and the undercut structure between the two molding blocks and the assembly slot.

[0016] The molding of the casing involves many molding blocks. If these blocks detach from the casing simultaneously, it can easily cause deformation. Therefore, a multi-segment demolding structure is designed to reduce the probability of deformation when multiple molding blocks are demolded. The movement of the hydraulic cylinder's telescopic rod has a delay, which increases the production time of a single casing. In contrast, the mechanical drive structure has no delay in response and can release the undercut structure between the molding blocks and the product when the mold opens, reducing the production time per product. Therefore, replacing the hydraulic cylinder drive structure with a mechanical drive structure also improves the injection molding efficiency of the casing. Furthermore, the mechanical drive structure operates more stably, unlike hydraulic cylinders which require periodic shutdowns for maintenance.

[0017] Preferably, the molding block four has a sliding groove one, the molding block five is slidably connected in the sliding groove one, the molding block five has a first inclined surface, the first inclined surface is used to cooperate with the molding block three, and convert the power of the movement of the molding block three into the power of the molding block five to move into the sliding groove one; the first driving mechanism includes a first spring disposed in the sliding groove one and a limiting member disposed on the molding block four, the first spring is located on the side of the molding block five opposite to the molding block three, the elastic force of the first spring acts on the molding block five, the first spring drives the molding block five to move out of the sliding groove one, and the limiting member is used to restrict the molding block five from sliding out of the sliding groove one.

[0018] By adopting the above technical solution, when molding block three moves away from the cover, it gradually releases its pressure on molding block five. During this process, the first spring rebounds and drives molding block five to slide out of the slide groove one, thereby releasing the inverted fastening structure between molding block five and assembly groove two. Finally, under the driving force of the first spring, molding block five slides to contact the limiting part and stops moving. At this time, the first inclined surface is located on the movement path of molding block three. As molding block three moves closer to molding block four, it presses against the first inclined surface, thereby driving molding block five to slide into the slide groove one, causing molding block five to move to the position of molding assembly groove two.

[0019] Preferably, the limiting component is a bolt, and the molding block five has a countersunk hole. The bolt is located in the countersunk hole, and the bolt thread passes through the countersunk hole and is connected to the molding block four. The first spring is sleeved on the bolt. When the mold is not closed, the first spring presses the molding block five against the bolt.

[0020] By adopting the above technical solution, bolts are used as limiting components, making installation and replacement convenient.

[0021] Preferably, the molding block one has a sliding groove two, and the second driving mechanism includes a slider connected to the molding rod, a second spring, a driving block disposed on the molding block three, and a limiting part. The slider is slidably connected in the sliding groove two, and one end of the slider extends out of the sliding groove two and is located on the movement path of the driving block. The elastic force of the second spring acts on the slider. The limiting part is used to restrict the molding rod from sliding out of the molding block one after it slides into the molding block one.

[0022] By adopting the above technical solution, when molding block three moves away from the cover, it will move along with the driving block. During this process, molding block five first moves until it is no longer in contact with the molding rod, and then the driving block moves until it abuts against the slider and pushes the slider to move together, causing the molding rod to retract into molding block one, releasing the undercut structure between the molding rod and the perforation. Then, the limiting part restricts the sliding of the molding rod, so that the molding rod will not extend out of molding block one. In the mold closed state, the molding rod will be pressed against molding block five by the second spring, and molding block five will have a limiting and positioning effect on the final position of the molding rod, thereby ensuring the smooth injection molding of the perforation.

[0023] Preferably, the molding block one has a sliding groove three, and the limiting part includes a mounting block slidably connected in the sliding groove three, a limiting block provided on the mounting block, and a third spring provided in the sliding groove three. The molding rod has a limiting groove that is inserted and cooperates with the limiting block. The elastic force of the third spring acts on the mounting block, and the third spring is used to press the limiting block against the limiting groove. The end of the mounting block away from the third spring has a second inclined surface. When the driving block moves close to the molding block four, it presses against the second inclined surface and drives the mounting block to slide into the sliding groove three, so as to release the cooperation between the limiting block and the limiting groove.

[0024] By adopting the above technical solution, when molding block three presses against molding block five, the driving block also presses against the limiting block. After the driving block moves away from molding block four by a certain distance, it releases its pressure on the limiting block, and the third spring rebounds, pressing the limiting block against the molding rod. Then, the driving block continues to move, contacting the slider and pushing it to move, causing the third spring to compress and the molding rod to retract into molding block one. During the retraction of the molding rod into molding block one, the limiting groove gradually moves closer to the limiting block. When the driving block stops moving, the limiting groove is directly opposite the limiting block, and the third spring pushes the mounting block to slide, causing the limiting block to enter the limiting groove, thus restricting the sliding of the molding rod.

[0025] Preferably, the mounting block has a through groove, the forming rod passes through the through groove, and the limiting block is located in the through groove.

[0026] By adopting the above technical solution, the assembly of components such as the third spring, mounting block, and forming rod can be facilitated.

[0027] Preferably, the molding block five has a third inclined groove, the end of the molding rod is inserted into the third inclined groove and fits against the third inclined groove, and the elastic force of the first spring is greater than the elastic force of the second spring.

[0028] By adopting the above technical solution, the forming rod is inserted into the forming block five, thereby preventing flash from forming between the forming block five and the forming rod, that is, preventing flash from forming at the opening of the perforation. At the same time, the setting of the inclined groove also allows the forming block three to push the forming rod to move when the forming block three moves, so that the forming rod will not obstruct the movement of the forming block three.

[0029] Preferably, the forming rod includes a rod body one, a rod body two, and a threaded post disposed on the rod body two. The rod body one is a round rod used for forming through holes, the rod body two is a square rod, the slider is sleeved on the threaded post, the threaded post is threadedly engaged with the rod body one, the rod body one and the rod body two clamp the slider, and the second spring is sleeved on the rod body two.

[0030] By adopting the above technical solution, the assembly of the forming rod and the slider is facilitated.

[0031] The main technical effects of this invention are reflected in the following aspects:

[0032] 1. The present invention designs a multi-segment demolding structure, which reduces the probability of deformation of the cover when multiple molding blocks are demolded due to pulling. At the same time, it replaces the hydraulic cylinder drive scheme, making the mold smaller and able to be adapted to smaller injection molding machines, thus controlling the injection molding production cost.

[0033] 2. The present invention controls the demolding of the molding rod and the molding block five by the movement of the molding block three;

[0034] 3. This invention effectively solves the problem of different demolding angles between the molding block and the molding rod. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the cover's structure.

[0036] Figure 2 This is a structural diagram of the cover from another angle.

[0037] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0038] Figure 4 This is a schematic diagram of the mold structure.

[0039] Figure 5 This is a structural diagram of the upper mold body and the cover body.

[0040] Figure 6 It is a structural diagram of components such as the upper fixing plate, connecting column, and power block.

[0041] Figure 7 This is a structural diagram of the template, power block, and connecting column.

[0042] Figure 8 It is a structural diagram of two power blocks, two forming blocks, two forming blocks, and the cover.

[0043] Figure 9 This is a structural diagram of the lower mold body and the cover body.

[0044] Figure 10 This is a structural diagram of the molded blocks 1, 3, 4, and 5, and the cover body, in the mold-closed state.

[0045] Figure 11 This is a schematic diagram of the structure when the forming block three moves away from the assembly slot two and the forming block five moves into the yielding space.

[0046] Figure 12 yes Figure 10 A schematic diagram of the structure of the middle component after the cover is removed.

[0047] Figure 13 A schematic diagram of the structure of molding block three.

[0048] Figure 14 This is a schematic diagram of the structure of molding block 1, molding block 4, molding block 5, and molding rod in the mold-closed state.

[0049] Figure 15 This is a schematic diagram of the structure of molding block 1, molding block 4, molding block 5, and molding rod in the mold-open state.

[0050] Figure 16 yes Figure 14 Schematic diagram of the structure of the middle forming block one and the middle forming block three after partial cross-section.

[0051] Figure 17 yes Figure 16 A magnified view of a section at point B in the middle.

[0052] Figure 18 yes Figure 14 A schematic diagram of the structure of a partially cut section of the medium-sized block.

[0053] Figure 19 yes Figure 18 A magnified view of a section at point C.

[0054] Figure 20 This is an exploded view of the formed rod structure.

[0055] Reference numerals: 1. Upper mold body; 11. Upper fixed plate; 111. Connecting column; 12. Fixed template; 121. Diagonal bar; 13. Power block; 14. First inclined groove; 15. Second inclined groove; 16. Drive spring; 2. Lower mold body; 21. Moving template; 31. Forming block one; 311. Inclined hole; 312. Slide groove two; 313. Slide groove three; 32. Forming block two; 33. Forming block three; 34. Forming block four; 341. Slide groove one; 35. Forming block five; 351. First inclined surface; 352. Third inclined groove; 353. Countersunk hole; 4. First Drive mechanism; 41. First spring; 42. Limiting component; 421. Bolt; 5. Forming rod; 51. Rod body one; 52. Rod body two; 53. Threaded column; 54. Limiting groove; 6. Second drive mechanism; 61. Slider; 62. Second spring; 63. Drive block; 7. Limiting part; 71. Mounting block; 72. Limiting block; 73. Third spring; 74. Second inclined surface; 75. Through groove; 8. Cover; 81. Mating groove; 82. Slot; 83. Buckle; 84. Assembly groove one; 85. Assembly groove two; 86. Through hole; 9. Recess space. Detailed Implementation

[0056] 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.

[0057] Reference Figures 4-6 This embodiment of a multi-point side-sliding molding structure for a plastic front cover injection mold for an electric vehicle includes an upper mold body 1 and a lower mold body 2. The upper mold body 1 includes an upper fixed plate 11 and a fixed template 12, and the lower mold body 2 includes a movable template 21. The upper fixed plate 11 is provided with four connecting columns 111, and the fixed template 12 is slidably connected to the four connecting columns 111 along the mold opening direction.

[0058] Reference Figures 5-7 Six drive springs 16 are placed between the fixed template 12 and the upper fixed plate 11, with both ends of the drive springs 16 abutting against the fixed template 12 and the upper fixed plate 11 respectively. When the mold is closed, the injection molding machine will press the fixed template 12 against the upper fixed plate 11, and the six drive springs 16 will be in a compressed state under the action of the injection molding machine's clamping force.

[0059] Reference Figures 5-8 Two forming blocks 32 are slidably connected to the fixed template 12 along the mold opening direction perpendicular to the mold. Two power blocks 13 are slidably connected inside the fixed template 12 along the mold opening direction. Both power blocks 13 are connected to the upper fixed plate 11 and are located on both sides of the two forming blocks 32. The power blocks 13 are provided with a first inclined groove 14. One end of the forming block 32 is used to form a mating groove 81, and the other side of the forming block 32 is slidably connected in the first inclined groove 14.

[0060] Reference Figures 5-8 Two forming blocks 33 are slidably connected on the fixed template 12 along the mold opening direction perpendicular to the mold. Two second inclined grooves 15 are opened on a power block 13. One side end of the two forming blocks 33 is slidably connected in the two second inclined grooves 15 respectively, and the other side end of the two forming blocks 33 is used to form the assembly groove 84. The first inclined groove 14 and the second inclined groove 15 are both dovetail grooves.

[0061] Reference Figure 9 Two molding blocks 31 are slidably connected to the moving template 21 along the mold opening direction perpendicular to the mold. One molding block 31 is used to form a slot 82 and multiple buckles 83. The fixed template 12 is provided with four diagonal rods 121, which are symmetrically distributed in pairs on the fixed template 12. One molding block 31 is provided with two oblique holes 311 for the diagonal rods 121 to be inserted. When the mold opens, the four diagonal rods 121 will drive the two molding blocks 31 to slide away from the already injection-molded cover 8.

[0062] Reference Figures 10-12 Two molding blocks 34 are symmetrically arranged on molding block 31. Molding block 34 has a sliding groove 341. Molding block 35 is slidably connected in the sliding groove 341. Molding block 35 is used to form assembly groove 85. At the same time, when the mold is closed, molding block 33, molding block 34, and molding block 35 abut against each other and cooperate to form assembly groove 84. At this time, molding block 33 is located below molding block 34 and molding block 35.

[0063] Reference Figures 12-17 The molding block 35 has a first inclined surface 351, which is used to cooperate with the molding block 33. During the process of the molding block 33 moving closer to the molding block 4 34, the molding block 33 presses against the first inclined surface 351 to drive the molding block 35 to slide into the slide groove 1 341, so that the molding block 35 moves upward to the position of the molding assembly groove 2 85.

[0064] Reference Figures 12-17 The molding block 4 34 is provided with a first driving mechanism 4 for driving the molding block 5 35 to slide. The first driving mechanism 4 includes a limiting member 42 provided on the molding block 4 34. The limiting member 42 is a bolt 421. The molding block 5 35 has a countersunk hole 353. The bolt 421 is located in the countersunk hole 353. The thread of the bolt 421 passes through the countersunk hole 353 and is threaded onto the molding block 4 34.

[0065] Reference Figures 12-17The first drive mechanism 4 also includes a first spring 41 disposed within the slide groove 341. The first spring 41 is located on the side of the molding block 35 facing away from the molding block 33. The first spring 41 is sleeved on the bolt 421, and the elastic force of the first spring 41 acts on the molding block 35, applying a force to the molding block 35 to drive it to move out of the slide groove 341. When the mold is not closed, the first spring 41 presses the molding block 35 against the bolt 421, and the first inclined surface 351 extends out of the molding block 34 and is located on the movement path of the molding block 33.

[0066] Reference Figure 12 , Figures 18-20 A forming rod 5 for forming a perforation 86 is slidably connected to the forming block 31. The forming block 31 is provided with a second driving mechanism 6 for driving the forming rod 5 to slide. The forming block 31 has a second groove 312. The second driving mechanism 6 includes a slider 61 connected to the forming rod 5. The slider 61 is slidably connected in the second groove 312.

[0067] Reference Figure 12 , Figures 18-20 The forming rod 5 includes a first rod 51, a second rod 52, and a threaded post 53 on the second rod 52. The first rod 51 is used to form the through hole 86 and is a round rod, while the second rod 52 is a square rod. The slider 61 is sleeved on the threaded post 53, and the threaded post 53 is threadedly engaged with the first rod 51. The first rod 51 and the second rod 52 hold the slider 61. The forming block 35 has a third inclined groove 352. The end of the first rod 51 away from the second rod 52 is inserted into the third inclined groove 352 and fits against the third inclined groove 352. The end face of the first rod 51 extending out of the third inclined groove 352 is an inclined surface.

[0068] Reference Figures 18-20 The second drive mechanism 6 also includes a second spring 62 and a drive block 63 disposed on the forming block 33. One end of the slider 61 extends out of the groove 312 and is located on the movement path of the drive block 63. The second spring 62 is sleeved on the rod 52 and located in the groove 312. The elastic force of the second spring 62 acts on the slider 61, and the second spring 62 applies a force to the forming rod 5 to drive the rod 51 to move out of the forming block 31. The elastic force of the first spring 41 is greater than the elastic force of the second spring 62.

[0069] Reference Figures 18-20The second drive mechanism 6 also includes a limiting part 7, which restricts the molding rod 5 from sliding out of the molding block 31 after it slides into the molding block 31. The molding block 31 has a sliding groove 313. The limiting part 7 includes a mounting block 71 slidably connected within the sliding groove 313, a limiting block 72, and a third spring 73 located within the sliding groove 313. The mounting block 71 has a through groove 75 through which the rod 51 passes. The limiting block 72 is located within the through groove 75, and the molding rod 5 has a limiting groove 54 that engages with the limiting block 72.

[0070] Reference Figures 18-20 The elastic force of the third spring 73 acts on the mounting block 71, and the third spring 73 applies a driving force to the mounting block 71 to drive it to slide out of the slide groove 313. The end of the limiting block 72 away from the third spring 73 is provided with a second inclined surface 74. When the mold is closed, when the driving block 63 moves close to the forming block 34, it presses against the second inclined surface 74 to drive the limiting block 72 to slide into the slide groove 313, thereby releasing the engagement between the limiting block 72 and the limiting groove 54.

[0071] Reference Figures 4-20 The complete injection molding process of the cover 8 in this application is as follows:

[0072] First, the injection molding machine injects hot melt plastic into the mold to complete the forming of the cover 8. After the cover 8 is formed, the injection molding machine controls the mold to open, causing the lower mold body 2 to move away from the upper mold body 1.

[0073] In the initial stage of mold opening, the six drive springs 16 drive the fixed template 12 to move away from the upper fixed plate 11 along with the lower mold body 2. During this process, the two power blocks 13 slide within the fixed template 12. When the two power blocks 13 slide, they drive the second molding block 32 to slide through the two first inclined grooves 14 and drive the two third molding blocks 33 to slide through the two second inclined grooves 15. This causes the two second molding blocks 32 and the two third molding blocks 33 to move away from the cover body 8, releasing the undercut structure between the two second molding blocks 32 and the two mating grooves 81, and between the two third molding blocks 33 and the two assembly grooves 84.

[0074] As the molding block 33 moves away from the cover 8, it gradually releases its pressure on the molding block 35, creating a clearance space 9. During this process, the first spring 41 rebounds, driving the molding block 35 to slide out of the first groove 341, thereby releasing the undercut structure between the molding block 35 and the assembly groove 85. As the molding block 35 slides, the engagement between the third inclined groove 352 and the inclined surface on the rod 51 pushes the rod 51 to slide, causing it to disengage from the third inclined groove 352.

[0075] When the molding block 33 moves away from the cover 8, it will also move the driving block 63 away from the molding block 4 34. After the driving block 63 moves away from the molding block 4 34 for a certain distance, the driving block 63 releases its pressure on the limiting block 72, and the third spring 73 rebounds to drive the mounting block 71 to move, pressing the limiting block 72 against the molding rod 5.

[0076] As the forming block 33 moves, it will first move until it separates from the forming block 5 35. Then, the forming block 33 will continue to move along with the driving block 63. After the driving block 63 moves a certain distance with the forming block 33, it will move until it comes into contact with the slider 61. Then, the driving block 63 will continue to move and push the slider 61 to move, causing the second spring 62 to be compressed and the rod 51 to retract into the forming block 31.

[0077] As rod 51 retracts into forming block 31, limiting groove 54 gradually moves closer to limiting block 72. When drive block 63 stops moving, limiting groove 54 moves to face limiting block 72, and third spring 73 drives mounting block 71 to slide, causing second inclined surface 74 to extend out of slide groove 313 and limiting block 72 to enter limiting groove 54, thus limiting the sliding of forming rod 5. The second inclined surface 74 extending out of slide groove 313 is located on the movement path of drive block 63.

[0078] Subsequently, once the six drive springs 16 cease pushing the fixed template 12, the lower mold body 2 will separate from the fixed template 12, and the drive block 63 will also separate from the slider 61. During this process, the four inclined rods 121 drive the two forming blocks 31 to move away from the cover body 8, releasing the undercut structure between the two forming blocks 31 and the slot 82, allowing the cover body 8 to be demolded. After the mold is opened, the cover body 8 can be removed from the lower mold body 2.

[0079] After the cover 8 is removed, the injection molding machine controls the lower mold body 2 to move closer to the upper mold body 1, causing the mold to close. During this process, the moving template 21 first approaches the fixed template 12, and then the four inclined rods 121 will insert into the four inclined holes 311 and drive the two molding blocks 31 to move and reset.

[0080] Subsequently, the moving template 21 moves to contact the fixed template 12 and pushes the fixed template 12 closer to the upper fixed plate 11, causing the six drive springs 16 to return to their original compression. When the moving template 21 moves to contact the fixed template 12, the drive block 63 is located between the slider 61 and the end of the limiting block 72 where the second inclined surface 74 is provided. During the process of the fixed template 12 being pushed by the moving template 21 closer to the upper fixed plate 11, the drive block 63 will slide within the fixed template 12, thereby driving the two forming blocks 32 and the two forming blocks 33 to move and return to their original positions.

[0081] During the resetting process of molding block 33, molding block 33 moves towards the first inclined surface 351, and driving block 63 moves towards the second inclined surface 74. During this process, molding block 33 first abuts against the first inclined surface 351, thereby driving molding block 5 35 to slide into the first groove 341, causing molding block 5 35 to move to the position of molding assembly groove 2 85. At this time, driving block 63 has not yet moved to abut against the second inclined surface 74.

[0082] After molding block 5 35 stops moving, molding block 3 33 will continue to move with driving block 63. Subsequently, driving block 63 will move to abut against the second inclined surface 74 on limiting block 72, driving limiting block 72 to move into slide groove 3 313, causing the third spring 73 to be compressed, thereby allowing limiting block 72 to move out of limiting groove 54. After limiting block 72 moves out of limiting groove 54, the second spring 62 rebounds, driving slider 61 to move closer to driving block 63, causing rod 1 51 to move out of molding block 1 31 and insert into the third inclined groove 352, so that rod 1 51 abuts against molding block 5 35, ensuring injection molding of through hole 86 and assembly groove 2 85.

[0083] After the template 12 moves to contact the upper fixed plate 11, the two molding blocks 33 and the two molding blocks 32 stop moving and are in their respective injection positions. The injection molding machine can then inject hot melt plastic into the mold to start the injection molding production of the next cover 8.

[0084] 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 multi-point side sliding forming structure of an injection mold for a plastic front face shield of an electric vehicle, comprising an upper mold body (1) and a lower mold body (2), the upper mold body (1) comprising an upper fixed plate (11) and a fixed mold plate (12), and the lower mold body (2) comprising a movable mold plate (21), characterized in that: a plurality of connecting columns (111) are arranged on the upper fixed plate (11), the fixed mold plate (12) is slidably connected to the plurality of connecting columns (111), a plurality of driving springs (16) are arranged between the fixed mold plate (12) and the upper fixed plate (11), and the two ends of the driving spring (16) abut against the fixed mold plate (12) and the upper fixed plate (11), respectively; during mold injection, the upper fixed plate (11) is pressed against the fixed mold plate (12) by the clamping force of an injection molding machine to compress the plurality of driving springs (16); two forming blocks one (31) are slidably connected to the movable mold plate (21), the forming block one (31) is used for forming a plurality of insertion grooves (82) and a plurality of buckles (83), a plurality of inclined rods (121) are arranged on the fixed mold plate (12), a plurality of inclined holes (311) for the inclined rods (121) to be inserted are arranged on the forming block one (31), and the inclined rods (121) drive the forming block one (31) to slide away from the shield body (8) when the mold is opened; two forming blocks two (32) are slidably connected to the fixed mold plate (12), the forming block two (32) is used for forming a plurality of matching grooves (81), two power blocks (13) are slidably connected in the fixed mold plate (12), the two power blocks (13) are connected to the upper fixed plate (11), a first inclined groove (14) is arranged on the power block (13), and one side end of the forming block two (32) is slidably connected in the first inclined groove (14); when the power block (13) moves relative to the fixed mold plate (12), the forming block two (32) is driven by the first inclined groove (14) to slide transversely away from the matching groove (81); two forming blocks three (33) are slidably connected to the fixed mold plate (12), two second inclined grooves (15) are arranged on the power block (13), and one side end of each of the two forming blocks three (33) is slidably connected in the two second inclined grooves (15); two forming blocks four (34) are arranged on the forming block one (31), a forming block five (35) is slidably connected to the forming block four (34), the forming block five (35) is used for forming an assembly groove two (85), and the forming blocks three (33), the forming blocks four (34), and the forming block five (35) are used for forming an assembly groove one (84) by mutual cooperation; a first driving mechanism (4) for driving the forming block five (35) to slide is arranged on the forming block four (34); when the power block (13) moves relative to the fixed mold plate (12), the forming block three (33) is driven by the second inclined groove (15) to slide transversely away from the assembly groove one (84), and a retreat space (9) for the movement of the forming block five (35) is formed in the assembly groove one (84). ​ The forming block one (31) is slidably connected with a forming rod (5), the forming rod (5) is used for forming a perforation (86), and the forming block one (31) is provided with a second driving mechanism (6) for driving the forming rod (5) to slide; The forming block four (34) is provided with a sliding groove one (341), the forming block five (35) is slidably connected in the sliding groove one (341), the forming block five (35) is provided with a first inclined surface (351), the first inclined surface (351) is used for cooperating with the forming block three (33) to convert the power of the movement of the forming block three (33) into the power of the movement of the forming block five (35) into the sliding groove one (341); and the first driving mechanism (4) comprises a first spring (41) arranged in the sliding groove one (341) and a limiting piece (42) arranged on the forming block four (34), the first spring (41) is located on a side of the forming block five (35) away from the forming block three (33), the elastic force of the first spring (41) acts on the forming block five (35), the first spring (41) drives the forming block five (35) to move out of the sliding groove one (341), and the limiting piece (42) is used for limiting the forming block five (35) from sliding out of the sliding groove one (341).

2. The multi-point side slide forming structure of the injection mold for the plastic front face shield of the electric vehicle according to claim 1, characterized in that: The limiting piece (42) is a bolt (421), the forming block five (35) is provided with a countersunk hole (353), the bolt (421) is located in the countersunk hole (353), a screw rod of the bolt (421) penetrates through the countersunk hole (353) and is connected to the forming block four (34), and the first spring (41) is sleeved on the bolt (421); in a mold closing state, the first spring (41) abuts and presses the forming block five (35) against the bolt (421).

3. The multi-point side slide forming structure of the plastic front cover injection mold of the electric vehicle according to claim 1, characterized in that: The forming block one (31) is provided with a sliding groove two (312), the second driving mechanism (6) comprises a sliding block (61) connected with the forming rod (5), a second spring (62), a driving block (63) arranged on the forming block three (33) and a limiting portion (7), the sliding block (61) is slidably connected in the sliding groove two (312), one end of the sliding block (61) extends out of the sliding groove two (312) and is located on a movement path of the driving block (63); the elastic force of the second spring (62) acts on the sliding block (61); and the limiting portion (7) is used for limiting the forming rod (5) from sliding out of the forming block one (31) after the forming rod (5) slides into the forming block one (31).

4. The multi-point side slide forming structure of the plastic front cover injection mold of the electric vehicle according to claim 3, characterized in that: The forming block one (31) is provided with a sliding groove three (313), the limiting part (7) includes an installation block (71) slidably connected in the sliding groove three (313), a limiting block (72) provided on the installation block (71), a third spring (73) provided in the sliding groove three (313), and the forming rod (5) is provided with a limiting groove (54) plugged with the limiting block (72); the third spring (73) is arranged on the installation block (71) and is used for pressing the limiting block (72) in the limiting groove (54); the end of the installation block (71) away from the third spring (73) is provided with a second inclined surface (74); when the driving block (63) moves close to the forming block four (34), the second inclined surface (74) is pressed to drive the installation block (71) to slide into the sliding groove three (313), so that the cooperation between the limiting block (72) and the limiting groove (54) is released.

5. The multi-point side slide forming structure of the plastic front face cover injection mold of the electric vehicle according to claim 4, characterized in that: The installation block (71) is provided with a through slot (75), and the forming rod (5) passes through the through slot (75), and the limiting block (72) is arranged in the through slot (75).

6. The multi-point side slide forming structure of the plastic front cover injection mold of the electric vehicle according to claim 4, characterized in that: The forming block five (35) is provided with a third inclined groove (352), and the end of the forming rod (5) is inserted into the third inclined groove (352) and is attached to the third inclined groove (352), and the elastic force of the first spring (41) is greater than that of the second spring (62).

7. The multi-point side slide forming structure of the plastic front face cover injection mold of the electric vehicle according to claim 6, characterized in that: The forming rod (5) includes a rod body one (51), a rod body two (52) and a threaded column (53) provided on the rod body two (52), the rod body one (51) is a round rod and is used for forming a through hole (86), the rod body two (52) is a square rod, the sliding block (61) is sleeved on the threaded column (53), the threaded column (53) is threadedly connected with the rod body one (51), the rod body one (51) and the rod body two (52) clamp the sliding block (61), and the second spring (62) is sleeved on the rod body two (52).

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