An injection molding device and injection molding process for the production of automotive trim parts

Abstract

The present application relates to an injection molding device and an injection molding process for the production of automotive trim parts. It relates to the technical field of injection molding. It includes an extrusion device and a molding area. In the molding area, there is a tail template and several movable templates. Molding cavities are provided on both the tail template and each movable template. Communication holes are formed in each movable template. A sealing plate is provided in the molding area. Guide rods are provided on the sealing plate. The guide rods pass through the tail template, several movable templates and are slidably arranged. A driving assembly is provided on the molding area for driving the mutual opening and closing between several movable templates, between the movable template and the sealing plate, and between the movable template and the tail template. A cutting plate is slidably arranged in the movable template. The cutting plate extends into the communication hole. A connecting assembly is provided on the driving assembly for driving the cutting plate to cut the workpiece in the communication hole. A discharging assembly is provided on the molding area for pushing the workpiece out of the molding cavity. The present application has the effect of effectively avoiding the generation of pits on the surface of the workpiece when the workpiece is taken out and improving the injection molding quality of the workpiece.

Description

Technical Field

[0001] The present application relates to the technical field of injection molding, and particularly to an injection molding device and an injection molding process for the production of automotive trim parts. Background Art

[0002] At present, with the improvement of people's living standards, the demand for automobiles is gradually increasing. The interior of automobiles also has a certain impact on the level of automobile manufacturing, and most of the automobile interiors are injection molded parts.

[0003] A Chinese patent with the authorization announcement number CN213382752U discloses an injection molding machine for processing automotive trim parts, which includes a pneumatic push rod and an extrusion device. The pneumatic push rod is disposed opposite to the injection port of the extrusion device. A linkage mold is provided at the end of the pneumatic push rod. The linkage mold includes several templates, and mold cavities are formed on the templates. Communication holes are formed on each template. A closing plate is provided on one side of the extrusion device facing the linkage mold. A number of telescopic rods are provided between the closing plate and the templates, and between the templates. The telescopic rod includes a connecting rod and a sleeve. A limiting groove extending parallel to the axial direction is formed on the inner side wall of the sleeve, and a limiting block is fixedly provided on the connecting rod, and the limiting block is located in the limiting groove. The present application has the effect of processing multiple automotive trim parts within one injection molding cycle action through the linkage mold, thereby improving the injection molding processing efficiency of automotive trim parts. When the pushing block pushes the workpiece out of the mold cavity, the part of the workpiece in the mold cavity and the part in the communication hole are broken, and this breakage will cause pits on the surface of the workpiece, seriously affecting the quality of the workpiece. Summary of the Invention

[0004] In order to improve the problem that pits are generated on the surface of the workpiece when the workpiece is removed from the mold cavity, affecting the quality of the workpiece, the present application provides an injection molding device and an injection molding process for the production of automotive trim parts.

[0005] On the one hand, an injection molding device for the production of automotive trim parts provided by the present application adopts the following technical solution:

[0006] An injection molding device for producing automotive trim parts includes an extrusion device and a molding area. In the molding area, there is a tail template and several movable templates. Mold cavities are provided on both the tail template and each movable template. Communication holes are formed in each movable template. A sealing plate is provided on one side of the extrusion device facing the movable template. Guide rods are provided on the sealing plate. The guide rods pass through the tail template, several movable templates and are slidably arranged with the tail template and several movable templates. A driving component is provided on the molding area for driving the mutual opening and closing between several movable templates, between the movable template and the sealing plate, and between the movable template and the tail template. A cutting plate is slidably arranged in the movable template. The cutting plate extends into the communication hole. A connecting component for driving the cutting plate to cut the workpiece in the communication hole is provided on the driving component. A discharging component for pushing the workpiece out of the mold cavity is provided on the molding area.

[0007] By adopting the above technical solution, when injection molding automotive ornaments, first, the driving component is used to drive the tail template and the movable templates, between the movable templates, and between the movable template and the sealing plate to be mutually tightened. Then, the extrusion device injects the material into each mold cavity through the communication holes. After the material cools, the driving component is used to drive the tail template and the movable templates to slide to open the mold. At the same time of mold opening, the driving component drives the cutting plate to cut the material filled in the communication hole through the connecting component, so that the workpieces are separated from each other. Then, the discharging component takes out the workpieces from the mold cavity, thereby realizing the injection molding of automotive trim parts and effectively avoiding the generation of pits on the surface of the workpieces when taking them out, thus improving the injection molding quality of the workpieces.

[0008] In a specific feasible implementation, the driving component includes a hydraulic cylinder. The piston rod of the hydraulic cylinder is connected to the tail template far from the sealing plate. A first driving rod is provided between the tail template and the movable template. A second driving rod is provided between two adjacent movable templates. One end of the second driving rod is connected to the movable template. The first driving rod is connected to the tail template. A stop block is provided on the movable template. Sliding blocks are provided on both the first driving rod and the second driving rod. The sliding blocks are used to pull the stop block to move. The sliding blocks squeeze the stop block to make the distance between two movable templates and between the movable template and the tail template greater than the maximum thickness of the workpiece.

[0009] By adopting the above technical solution, when demolding the automotive trim parts, the hydraulic cylinder contracts, the hydraulic cylinder pulls the tail template to move, so that the space between the tail template and the moving template opens. At the same time, the tail template drives the sliding block to move through the first driving rod. When the sliding block abuts against the stop block, the space between the tail template and the moving template is completely opened. Then, after the tail template is opened, it drives the moving template to move through the first driving rod. Then, the moving template drives the second driving rod to slide, and the second driving rod drives the adjacent moving template to slide through the sliding block abutting against the baffle plate, thereby realizing the demolding of the injection molded parts of the automotive trim parts.

[0010] In a specific feasible implementation, the connection component includes a connecting rod arranged on the sealing plate, a rotating support is provided on the moving template, a first rack is provided on the connecting rod, a gear component meshing with the first rack is rotatably provided on the rotating support, a second rack meshing with the gear component is provided on the cutting plate, and the gear component drives the cutting plate to slide along the moving template through the second rack.

[0011] By adopting the above technical solution, when opening the mold for the workpiece, the moving template slides along the guide rod. At this time, the gear component slides along the first rack, and the gear component generates self-rotation. The self-rotating gear component drives the cutting plate to move towards the communication hole through the meshing with the second rack, and cuts off the condensed material in the communication hole, thereby realizing the separation of two adjacent workpieces.

[0012] In a specific feasible implementation, the unloading component includes a sliding member, a rotating motor, a disassembling rod and a suction attachment. The sliding member is used to drive the rotating motor to slide along the opening and closing direction of the moving template. The disassembling rod is coaxially arranged on the output shaft of the rotating motor. The suction attachments correspond to the moving templates one by one. The suction attachments are used to adsorb the workpieces, and the rotating motor drives the suction attachments to rotate through the disassembling rod.

[0013] By adopting the above technical solution, when the tail template and the moving template are completely opened, then the rotating motor drives the disassembling rod to rotate. The disassembling rod drives the suction attachment to rotate to the workpiece in the molding cavity. Then, the workpiece is adsorbed by the suction attachment. Then, the sliding member drives the suction attachment to move, so that the suction attachment drives the workpiece out of the molding cavity, thereby realizing the removal of the workpiece, effectively avoiding the breakage of the connection between the condensed material in the connection hole and the workpiece, and effectively avoiding the appearance of pits on the surface of the workpiece, and improving the injection molding quality of the automotive trim parts.

[0014] In a specific feasible implementation, the suction attachment includes a suction cup and a vacuum generator. A plurality of through holes are provided on the suction cup, and the plurality of through holes are communicated through an adsorption channel. The vacuum generator is communicated with each adsorption channel through a first flexible tube.

[0015] By adopting the above technical solution, when adsorbing the workpiece, when the suction cup contacts the surface of the workpiece, the vacuum generator makes the through hole in negative pressure through the first flexible tube, and the suction cup adsorbs the surface of the workpiece. Then the workpiece moves with the suction cup. When the workpiece completely moves out of the forming cavity, the vacuum generator is powered off, and the workpiece is separated from the suction cup, thereby realizing the unloading of the workpiece and effectively avoiding damage to the workpiece during unloading.

[0016] In a specific feasible implementation, a support cylinder is provided in the forming area. The disassembly rod is inserted into the support cylinder and is slidably arranged with the support cylinder. The axis of the support cylinder is collinear with the axis of the disassembly rod. A plurality of sleeves are sleeved on the disassembly rod, and the sleeves correspond to the suction cups one by one. A sliding groove is provided on the disassembly rod along its own axial direction, and the sliding grooves correspond to the sleeves one by one. A sliding block for sliding in the sliding groove is provided on the sleeve. The suction cup and the sleeve are connected by a fixing rod. A through hole for the fixing rod to pass through is provided on the support cylinder, and a guiding surface is provided on the side wall of the through hole. A compression spring for squeezing the sleeve towards the guiding surface is sleeved on the disassembly rod, and the fixing rod squeezes the guiding surface to make the suction cup abut against the workpiece.

[0017] By adopting the above technical solution, when the rotating motor drives the disassembly rod to rotate, the disassembly rod drives the sleeve to rotate through the cooperation of the sliding groove and the slider. The sleeve drives the suction cup to rotate through the fixing rod. At the same time, under the push of the compression spring, the fixing rod slides along the guiding surface, so that the fixing rod slides towards the workpiece while rotating, thereby making the suction cup abut against the surface of the workpiece more firmly and making the suction cup adsorb the workpiece more firmly.

[0018] In a specific feasible implementation, the sliding member includes a first slide rail, a second slide rail, and a linear motor. The first slide rail is arranged on the forming area, the second slide rail is arranged on the rotating motor, the first slide rail and the second slide rail cooperate with each other and are slidably arranged. The support cylinder is slidably arranged with the forming area. The linear motor is used to push the support cylinder and the disassembly rod to slide, and the linear motor pushes the disassembly rod to slide to extract the workpiece from the forming cavity.

[0019] By adopting the above technical solution, when the suction cup completely adsorbs the workpiece, the linear motor pushes the support cylinder and the disassembly rod towards the extrusion device, and the rotating motor slides along the first slide rail with the second slide rail. At this time, the suction cup drives the workpiece to be extracted from the forming cavity, thereby realizing the unloading of the workpiece.

[0020] In a specific feasible implementation, an air blowing hole is provided at one end of the cutting plate inserted into the communication hole, and a blower is provided on the forming area. The blower and the air outlet hole are both connected and arranged through a second flexible tube.

[0021] By adopting the above technical solution, when the cutting plate squeezes the condensed material in the connecting hole, some debris will be generated. Then the fan is started, and the fan blows air from the blowing hole to the connecting hole through the second flexible tube, which can blow out the debris in the connecting hole, thereby cleaning the connecting hole and effectively avoiding the impact on the next injection molding.

[0022] In a specific possible implementation manner, a receiving groove for receiving the workpiece is provided on the molding area, and an elastic filter net is provided in each of the receiving grooves.

[0023] By adopting the above technical solution, when the workpiece is separated from the suction cup, the workpiece falls into the receiving groove, and the elastic screening net can filter out the debris in the workpiece, thereby improving the cleanliness of the workpiece surface.

[0024] On the other hand, the present application provides an injection molding process for producing automotive accessories using the following technical solutions:

[0025] An injection molding process for producing automotive accessories includes the following steps: S1, mold closing; S2, material injection; S3, mold opening and splitting after cooling; S4, workpiece unloading;

[0026] In step S2, the extrusion device injects material into each mold cavity in sequence. In step S3, during the mold opening process, the cutting plate cuts off the connected parts of the workpiece in the connecting hole.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When injection molding automotive accessories, the drive assembly first drives the tail platen and movable platen, the movable platen and movable platen, and the movable platen and sealing platen to press against each other. Then, the extruder injects the material into each mold cavity through the connecting hole. After the material cools, the drive assembly drives the tail platen and movable platen to slide, causing the mold to open. At the same time, the drive assembly drives the cutting plate through the connecting assembly to cut the material filled in the connecting hole, separating the workpieces from each other. The workpieces are then removed horizontally from the mold cavity by the unloading assembly, thus completing the injection molding of the automotive accessories. At the same time, it can effectively prevent the formation of pits on the workpiece surface during removal, thereby improving the injection molding quality of the workpiece.

[0029] 2. When the movable platen and the tail platen are fully opened, the rotating motor drives the suction cup to rotate to the surface of the workpiece, and then, under the push of the extrusion spring, the suction cup is pressed against the workpiece, and then the vacuum generator drives the suction cup to adsorb the workpiece, and then the linear motor pushes the suction cup to move horizontally, so that the suction cup drives the workpiece out of the mold cavity. When the workpiece is completely pulled out of the mold cavity, the vacuum generator is powered off and the workpiece falls into the receiving groove, thereby realizing the unloading of the workpiece. At the same time, it can effectively avoid the partial breakage of the workpiece in the connecting hole, which causes pits on the workpiece surface, thereby improving the injection molding quality of the workpiece. Brief Description of the Drawings

[0030] Figure 1 FIG. is a schematic structural view of an injection molding device and an injection molding process for the production of automotive trim parts according to an embodiment of the present application.

[0031] Figure 2 is along Figure 1 A sectional view taken along line A-A in

[0032] Figure 3 is Figure 1 An enlarged view of part B in

[0033] Figure 4 is Figure 2 An enlarged view of part C in

[0034] Figure 5 is a schematic structural view for showing the unloading component.

[0035] Figure 6 is along Figure 5 A sectional view taken along line D-D in

[0036] Figure 7 is Figure 6 An enlarged view of part E in

[0037] Description of the reference numerals: 1, extrusion device; 11, discharge pipe; 2, injection molding support; 21, molding area; 22, support plate; 23, sealing plate; 24, guide rod; 25, tail template; 26, receiving groove; 27, elastic filter screen; 31, moving template; 311, sliding groove; 312, cutting plate; 32, molding cavity; 33, communication hole; 4, driving component; 41, hydraulic cylinder; 42, first driving rod; 43, second driving rod; 44, sliding block; 45, stop block; 5, connecting component; 51, connecting rod; 52, rotating support; 53, gear component; 531, driving gear; 532, rotating gear; 54, first rack; 55, second rack; 56, air blowing hole; 57, fan; 58, second flexible pipe; 6, unloading component; 61, sliding part; 611, first slide rail; 612, second slide rail; 613, linear motor; 62, rotating motor; 63, disassembly rod; 64, adsorbing part; 641, suction cup; 642, vacuum generator; 643, through hole; 644, first flexible pipe; 65, rotating support plate; 66, support cylinder; 671, sleeve; 672, sliding groove; 673, slider; 674, fixed rod; 675, through hole; 676, guiding surface; 677, compression spring; ⑥78, shoulder. Detailed Description of the Embodiment

[0038] The following further describes the present application in detail with reference to the appended Figures 1-7 drawings.

[0039] An embodiment of the present application discloses an injection molding device for the production of automotive trim parts.

[0040] Referring to Figure 1 、 Figure 2 As shown in FIGS. 1 and 2, an injection molding device for the production of automotive trim parts includes an extrusion device 1. The extrusion device 1 is composed of an extruder and a discharge pipe 11. A plastic injection support 2 is provided on the opposite side of the discharge pipe 11. The side of the plastic injection support 2 close to the discharge pipe 11 is a molding area 21. A support plate 22 and a sealing plate 23 are fixedly arranged in the molding area 21. Four guide rods 24 are fixedly arranged between the support plate 22 and the sealing plate 23. A tail template 25 and a plurality of movable templates 31 are arranged between the support plate 22 and the sealing plate 23. In this embodiment, the number of movable templates 31 is two. Each guide rod 24 passes through the two movable templates 31 and the tail template 25. The guide rod 24 is slidably arranged with the movable template 31 and the tail template 25. The movable template 31 and the tail template 25 are provided with molding cavities 32 on the side close to the extrusion device 1. A communication hole 33 for the discharge pipe 11 to pass through is provided on each movable template 31 and the sealing plate 23. A driving component 4 for driving the mutual opening and closing between the movable templates 31, between the movable template 31 and the sealing plate 23, and between the movable template 31 and the tail template 25 is arranged on the molding area 21. A chute 311 communicated with the communication hole 33 is arranged on the movable template 31. The chute 311 penetrates to the top wall of the movable template 31. A cutting plate 312 for sliding in the chute 311 is arranged on the movable template 31. One end of the cutting plate 312 inserted into the communication hole 33 is a cutting surface. A connecting component 5 for driving the cutting plate 312 to reciprocally slide along the chute 311 is arranged on the sealing plate 23. A discharging component 6 for pulling the workpiece out of the molding cavity 32 is arranged in the molding area 21. A receiving groove 26 is arranged on the plastic injection support 2. An elastic filter screen 27 is arranged in the receiving groove 26.

[0041] When injecting the automotive trim parts, the driving component 4 drives the tail template 25, the movable template 31 and the sealing plate 23 to close each other for mold closing operation. Then the extrusion device 1 slides towards the molding area 21. Then the discharge pipe 11 is inserted into the communication hole 33 and extends into the molding cavity 32 on the tail template 25. Then the injection starts. Then the extrusion device 1 is moved to inject materials into the three molding cavities 32 in sequence. After the injection and cooling are completed, the driving component 4 pulls the tail template 25 and the movable template 31 to slide for mold opening operation. As the mold opening progresses, the driving component 4 drives the cutting plate 312 to insert into the communication hole 33 through the connecting component 5. The cutting plate 312 cuts the condensed material in the communication hole 33, so that the workpieces are separated from each other. Then the discharging component 6 takes out the workpieces from the molding cavity 32, effectively avoiding the concave pits on the surface of the workpieces caused by the breakage of the condensed material in the communication hole 33 when the workpieces are taken off, thereby improving the injection quality of the workpieces. When the workpieces are taken off, they fall into the receiving groove 26. At the same time, the elastic filter screen 27 can separate the broken materials from the workpieces, thereby improving the cleanliness of the surface of the workpieces.

[0042] Referring to Figure 2 It should be noted that the content in the original text seems to be incomplete in some parts, such as the reference numbers not being fully explained. And the translation is based on the best understanding of the text, but there may be some inaccuracies due to the lack of complete context. If possible, it is recommended to provide more detailed and accurate information for a more precise translation., Figure 3 and Figure 4 , the driving component 4 includes a hydraulic cylinder 41 fixedly arranged on the support plate 22. The piston rod of the hydraulic cylinder 41 is fixedly arranged with the tail template 25. A first driving rod 42 is fixedly arranged on the top of the tail template 25. The number of the first driving rods 42 is two. The first driving rods 42 extend above the moving template 31. The end of the first driving rod 42 crosses the moving template 31 adjacent to the tail template 25. A second driving rod 43 is arranged between the two moving templates 31. The second driving rod 43 is fixedly arranged on the moving template 31 close to the tail template 25. Sliding blocks 44 are arranged on both the first driving rod 42 and the second driving rod 43. A stop block 45 is arranged on each moving template 31. The first driving rod 42 drives the sliding block 44 to squeeze the stop block 45 on the moving template 31 and drives the moving template 31 to slide. The moving template 31 drives another moving template 31 to slide by squeezing the stop block 45 through the sliding block 44 on the second driving rod 43. The second driving rod 43 is between the two first driving rods 42. When the sliding block 44 on the first driving rod 42 abuts against the stop block 45, the distance between the tail template 25 and the adjacent moving template 31 is greater than the maximum thickness of the workpiece. When the sliding block 44 on the second driving rod 43 abuts against the stop block 45, the distance between the two moving templates 31 is greater than the maximum thickness of the workpiece.

[0043] Referring to Figure 1 , Figure 3 and Figure 4 , the connecting component 5 includes a connecting rod 51 fixedly arranged on the closing plate 23. The other end of the connecting rod 51 is fixedly arranged with the support plate 22. The connecting rod 51 is arranged parallel to the guide rod 24. A rotating support 52 is arranged on each moving template 31. A gear component 53 is arranged on the rotating support 52. The gear component 53 includes a driving gear 531 and a rotating gear 532. The driving gear 531 and the rotating gear 532 are coaxially and fixedly arranged. A first rack 54 meshing with the driving gear 531 is arranged on the connecting rod 51. The driving gear 531 drives the rotating gear 532 to rotate. A second rack 55 meshing with the rotating gear 532 is arranged on the cutting plate 312. The second rack 55 is arranged along the sliding direction of the cutting plate 312. An air blowing hole 56 is arranged in the cutting plate 312. One end of the air blowing hole 56 penetrates through the cutting plate 312 and is inserted into the side wall opposite to one end of the communication hole 33. The other end of the air blowing hole 56 penetrates through the top wall of the cutting plate 312. A blower 57 is arranged on the forming area 21. The air outlet of the blower 57 is communicated with each air blowing hole 56 through a second flexible pipe 58.

[0044] When removing the mold from the workpiece, the hydraulic cylinder 41 contracts. The hydraulic cylinder 41 first drives the tail template 25 to slide. At this time, the tail template 25 drives the first driving rod 42 to slide. When the sliding block 44 on the first driving rod 42 abuts against the stop block 45, the tail template 25 and the adjacent movable template 31 are fully opened. Then, the tail template 25 abuts against the stop block 45 on the movable template 31 through the sliding block 44 on the first driving rod 42, thereby driving one movable template 31 to slide. While the movable template 31 is sliding, it drives the driving gear 531 to rotate along the first rack 54. The driving gear 531 drives the rotating gear 532 to rotate. The rotating gear 532 drives the cutting plate 312 to slide towards the communication hole 33 through the second rack 55 and cuts off the condensed material in the communication hole 33, thereby separating two adjacent workpieces. When the sliding block 44 on the second driving rod 43 abuts against the stop block 45 on another movable template 31, one movable template 31 pulls another movable template 31 to slide, and the distance between the other movable template 31 and the sealing plate 23 gradually increases. At the same time, the cutting plate 312 on the other movable template 31 cuts the condensed material in the communication hole 33.

[0045] When the workpiece is taken off, the blower 57 is started. The blower 57 blows air into the communication hole 33 through the second flexible pipe 58 and the air blowing hole 56 to blow out the slag falling in the communication hole 33, thereby cleaning the communication hole 33.

[0046] Refer to Figure 5 、 Figure 6 and Figure 7, the unloading component 6 includes a sliding member 61, a rotating motor 62, a disassembling rod 63 and a suction attachment 64. There are two rotating support plates 65 provided in the molding area 21. A support cylinder 66 is provided between the two rotating support plates 65. The support cylinder 66 sequentially penetrates through the two rotating support plates 65. The support cylinder 66 is slidably arranged with the rotating support plates 65. The disassembling rod 63 is inserted into the support cylinder 66 and is rotatably arranged with the support cylinder 66. The axis of the disassembling rod 63 is collinear with the axis of the support cylinder 66. The output shaft of the rotating motor 62 is fixedly arranged with the disassembling rod 63. The sliding member 61 includes a first slide rail 611, a second slide rail 612 and a linear motor 613. The first slide rail 611 and the second slide rail 612 cooperate with each other and are slidably arranged. The first slide rail 611 is fixedly arranged in the molding area 21. The second slide rail 612 is fixedly arranged at the bottom of the rotating motor 62. The output shaft of the linear motor 613 is fixedly arranged with the support cylinder 66. The support cylinder 66 is located between the linear motor 613 and the rotating motor 62. The output shaft of the linear motor 613 abuts against the disassembling rod 63. Three sleeves 671 are sleeved on the disassembling rod 63. The sleeves 671 are slidably arranged with the disassembling rod 63 and the support cylinder 66. The sleeves 671 correspond to the molding cavities 32 one by one. A sliding groove 672 is provided on the disassembling rod 63. The sliding grooves 672 correspond to the sleeves 671 one by one. The sliding grooves 672 are arranged along the axial direction of the disassembling rod 63. A slider 673 for sliding in the sliding groove 672 is provided on the sleeve 671. A fixing rod 674 is fixedly arranged on each sleeve 671. A through hole 675 for the fixing rod 674 to pass through is provided on the support cylinder 66. A guiding surface 67,6 is provided on the side wall of the through hole 675 for the fixing rod 674 to slide. Three compression springs 677 are sleeved on the disassembling rod 63. The compression springs 677 correspond to the sleeves 671 one by one. A shoulder 678 for fixing the compression spring 677 is provided on the disassembling rod 63. One end of the compression spring 677 abuts against the shoulder 678, and the other end of the compression spring 677 abuts against the sleeve 671. The compression spring 677 pushes the fixing rod 674 to slide along the guiding surface 676.

[0047] Refer to Figure 5 , Figure 6 and Figure 7 , the suction attachment 64 includes a suction cup 641 and a vacuum generator 64,2. The suction cup 641 is fixedly arranged on the fixing rod 674. A plurality of through holes 643 are provided on the suction cup 641. The openings of the through holes 643 face the workpiece. The plurality of through holes 643 are communicated through an adsorption channel. The vacuum generator 642 is fixedly arranged in the molding area 21. The vacuum generator 642 is communicated with the three adsorption channels through the first flexible tubes 644. The compression spring 677 pushes the fixing rod 674 to slide along the guiding surface 676 so that the suction cup 641 abuts tightly against the workpiece.

[0048] When the movable plate 31 and the tail plate 25 are fully opened, the rotating motor 62 is driven to rotate, and the rotating motor 62 drives the disassembly rod 63 to rotate. The disassembly rod 63 cooperates with the slider 673 through the sliding groove 672 to drive the sleeve 671 to rotate. The sleeve 671 is turned to the workpiece with the suction cup 641 through the fixed rod 674. When the fixed rod 674 rotates laterally of the workpiece, the fixed rod 674 slides along the guide surface 676 under the push of the extrusion spring 677. At this time, the suction cup 641 slides toward the workpiece under the drive of the fixed rod 674, and finally the suction cup 641 is pressed against the surface of the workpiece, and then the vacuum generator is started. 642, the vacuum generator 642 drives the suction cup 641 to adsorb the workpiece through the first flexible tube 644, and then starts the linear motor 613. The linear motor 613 pushes the support cylinder 66 and the disassembly rod 63 toward the extrusion device 1. The disassembly rod 63 drives the rotating motor 62 to slide along the first slide rail 611. At the same time, the workpiece is pulled out into the mold cavity 32 as the suction cup 641 moves, thereby realizing the unloading of the workpiece. At the same time, by pulling out the workpiece in a horizontal manner, it can effectively avoid the workpiece from being broken in the connecting hole 33, which causes pits in the workpiece, thereby improving the injection molding quality of the workpiece.

[0049] The implementation principle of an injection molding device for producing automobile accessories in an embodiment of the present application is as follows: when injection molding automobile accessories, the driving component 4 is first used to drive the tail plate 25 and the movable plate 31, the movable plate 31 and the movable plate 31, and the movable plate 31 and the closing plate 23 to press against each other, and then the extrusion device 1 injects the material into each mold cavity 32 through the connecting hole 33. After the material cools down, the driving component 4 drives the tail plate 25 and the movable plate 31 to slide so that the mold is opened. At the same time as the mold is opened, the driving component 4 drives the cutting plate 312 to cut the material filled in the connecting hole 33 through the connecting component 5, so that the workpieces are separated from each other, and then the workpiece is horizontally taken out from the mold cavity 32 through the unloading component 6, thereby realizing the injection molding of the automobile accessories. At the same time, it can effectively avoid the formation of pits on the surface of the workpiece when the workpiece is taken out, thereby improving the injection molding quality of the workpiece.

[0050] On the other hand, the present application also improves an injection molding process for the production of automotive accessories, including the following steps: S1, mold closing; S2, material injection; S3, cooling, mold opening and splitting; S4, workpiece unloading.

[0051] In step S1 , the hydraulic cylinder 41 pushes the tail plate 25 toward the closing plate 23 , and the tail plate 25 pushes the movable plate 31 toward the closing plate 23 . The tail plate 25 , the movable plate 31 and the closing plate 23 are pressed against each other to complete the mold closing.

[0052] In step S2, the extrusion device 1 drives the discharge pipe 11 to insert, connect, and extend into the molding cavity 32 on the tail template 25. Then, the discharge pipe 11 moves in the direction away from the hydraulic cylinder 41 to inject materials into the molding cavity 32 in sequence, so that the materials in each molding cavity 32 are more uniform.

[0053] In step S3, the hydraulic cylinder 41 contracts. First, the hydraulic cylinder 41 drives the tail template 25 to slide, and the tail template 25 and the moving template 31 are opened. Then, the tail template 25 drives the moving template 31 to slide through the first driving rod 42, and the two moving templates 31 are opened. At the same time, the cutting plate 312 moves downward to cut off the connected part of the workpiece in the communication hole 33.

[0054] In step S4, the rotating motor 62 drives the suction cup 641 to rotate to the surface of the workpiece. Then, under the push of the compression spring, the suction cup 641 is pressed against the workpiece. Then, the vacuum generator 642 drives the suction cup 641 to adsorb the workpiece. Then, the linear motor 613 pushes the suction cup 641 to move horizontally, so that the suction cup 641 drives the workpiece to be withdrawn from the molding cavity 32. When the workpiece is completely withdrawn from the molding cavity 32, the vacuum generator 642 is powered off, and the workpiece falls into the receiving groove 26.

[0055] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. An injection molding device for producing automotive accessories, characterized in that: The invention comprises an extrusion device (1) and a molding area (21), wherein a tail mold plate (25) and a plurality of movable mold plates (31) are provided in the molding area (21), a molding cavity (32) is provided on the tail mold plate (25) and each movable mold plate (31), and a connecting hole (33) is provided on each movable mold plate (31), and a sealing plate (23) is provided on the side of the extrusion device (1) facing the movable mold plate (31), and a guide rod (24) is provided on the sealing plate (23), and the guide rod (24) passes through the tail mold plate (25) and the plurality of movable mold plates (31) and is slidably arranged with the tail mold plate (25) and the plurality of movable mold plates (31). The molding area (21) is provided with a driving assembly (4) for driving the opening and closing of a plurality of movable mold plates (31), between the movable mold plate (31) and the closing plate (23), and between the movable mold plate (31) and the tail mold plate (25); a cutting plate (312) is slidingly provided in the movable mold plate (31), and the cutting plate (312) extends into the communicating hole (33); the driving assembly (4) is provided with a connecting assembly (5) for driving the cutting plate (312) to cut the workpiece in the communicating hole (33); the molding area (21) is provided with a discharge assembly (6) for pushing the workpiece out of the molding cavity (32); The unloading assembly (6) includes a sliding member (61), a rotating motor (62), a disassembly rod (63) and an adsorption member (64), wherein the sliding member (61) is used to drive the rotating motor (62) to slide along the opening and closing direction of the movable plate (31), the disassembly rod (63) is coaxially arranged on the output shaft of the rotating motor (62), the adsorption member (64) corresponds to the movable plate (31) in a one-to-one manner, the adsorption member (64) is used to adsorb workpieces, and the rotating motor (62) drives the adsorption member (64) to rotate through the disassembly rod (63); The adsorption member (64) includes a suction cup (641) and a vacuum generator (642); the suction cup (641) is provided with a plurality of through holes (643); the plurality of through holes (643) are connected through adsorption channels; the vacuum generator (642) is connected to each of the adsorption channels through a first flexible tube (644); The molding area (21) is provided with a support tube (66), the disassembly rod (63) is inserted into the support tube (66) and is slidably arranged with the support tube (66), the axis of the support tube (66) is colinear with the axis of the disassembly rod (63), the disassembly rod (63) is provided with a plurality of sleeves (671), the sleeves (671) correspond one-to-one with the suction cup (641), the disassembly rod (63) is provided with a sliding groove (672) arranged along its own axial direction, the sliding groove (672) corresponds one-to-one with the sleeve (671), and the sleeve (671) is provided with a The sliding block (44) slides in the sliding groove (672), the suction cup (641) and the sleeve (671) are connected via a fixing rod (674), the support tube (66) is provided with a through hole (675) for the fixing rod (674) to pass through, the side wall of the through hole (675) is provided with a guide surface (676), the disassembly rod (63) is provided with an extrusion spring (677) for extruding the sleeve (671) toward the guide surface (676), and the fixing rod (674) squeezes the guide surface (676) so that the suction cup (641) is pressed against the workpiece.

2. The injection molding device for producing automotive accessories according to claim 1, characterized in that: The driving assembly (4) includes a hydraulic cylinder (41), a piston rod of the hydraulic cylinder (41) is connected to the tail plate (25) away from the closing plate (23), a first driving rod (42) is provided between the tail plate (25) and the movable plate (31), a second driving rod (43) is provided between two adjacent movable platens (31), one of the second driving rods (43) is connected to the movable plate (31), the first driving rod (42) is connected to the tail plate (25), a stopper (45) is provided on the movable plate (31), the first driving rod (42) and the second driving rod (43) are both provided with a sliding block (44), the sliding block (44) is used to pull the stopper (45) to move, and the sliding block (44) squeezes the stopper (45) so that the distance between the two movable platens (31) and between the movable plate (31) and the tail plate (25) is greater than the maximum thickness of the workpiece.

3. The injection molding device for producing automotive accessories according to claim 1, characterized in that: The connecting assembly (5) includes a connecting rod (51) arranged on the closing plate (23), a rotating support (52) provided on the movable plate (31), a first rack (54) provided on the connecting rod (51), a gear assembly (53) rotatably provided on the rotating support (52) and meshing with the first rack (54), a second rack (55) meshing with the gear assembly (53) provided on the cutting plate (312), and the gear assembly (53) drives the cutting plate (312) to slide along the movable plate (31) through the second rack (55).

4. The injection molding device for producing automotive accessories according to claim 1, characterized in that: The sliding member (61) includes a first slide rail (611), a second slide rail (612), and a linear motor (613). The first slide rail (611) is arranged on the molding area (21), and the second slide rail (612) is arranged on the rotating motor (62). The first slide rail (611) and the second slide rail (612) cooperate with each other and are slidingly arranged. The support tube (66) and the molding area (21) are slidingly arranged. The linear motor (613) is used to push the support tube (66) and the disassembly rod (63) to slide. The linear motor (613) pushes the disassembly rod (63) to slide so that the workpiece is pulled out of the molding cavity (32).

5. The injection molding device for producing automotive accessories according to claim 1, characterized in that: The cutting plate (312) is provided with a blowing hole (56) at one end inserted into the communicating hole (33), and a fan (57) is provided on the molding area (21). The fan (57) and the blowing hole (56) are both connected through a second flexible tube (58).

6. The injection molding device for producing automotive accessories according to claim 1, characterized in that: The mold forming area (21) is provided with receiving grooves (26) for receiving workpieces, the receiving grooves (26) correspond to the movable templates (31) one by one, and each receiving groove (26) is provided with an elastic filter net (27).

7. An injection molding process for producing automobile accessories, according to the injection molding device for producing automobile accessories according to any one of claims 1 to 6, characterized in that: The process comprises the following steps: S1, mold closing; S2, material injection; S3, mold opening and splitting after cooling; S4, workpiece unloading; In step S2, the extrusion device (1) injects material into each mold cavity (32) in sequence. In step S3, during the mold opening process, the cutting plate (312) cuts off the portion of the workpiece connected in the connecting hole (33).

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