Two-color overmolding injection molding die and method based on automobile headlamp mask processing

Abstract

The present invention discloses a two-color overmolding injection molding die and method for automobile headlamp mask processing, which relates to the technical field of two-color injection molding of dies. It includes an operating table, and an injection molding device for injection molding is arranged on the top of the operating table. It also includes: a support seat, the support seat is arranged on the top of the operating table, and a rotating disk is rotatably connected to one side of the support seat. Three shaping grooves for injection molding are arranged on the side of the rotating disk close to the injection molding device; a switching mechanism on one side of the switching disk drives the switching disk to rotate, so that the ejecting mechanism ejects the cut waste inside the injection molding groove and cleans the injection molding groove. When the model after secondary injection molding rotates 60 degrees along with the rotating disk, by arranging a pushing device inside the shaping groove, the completed model is pushed out, so as to achieve the cyclic processing of the headlamp mask and improve the overall processing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of two-color injection molding for molds, and particularly to a two-color overmolding injection molding mold and method for processing automotive headlight masks. Background Art

[0002] As the name implies, a two-color injection molding machine is a machine that uses two different colors of plastic injection molding for one component, and is a machine for producing plastic products of two different materials and colors. The characteristics of a two-color injection molding machine can be simplified as: independently adjustable, high measurement accuracy, stable plasticization quality, stable back pressure, and fast response.

[0003] Referring to a two-color injection molding machine and a two-color injection molding process flow disclosed in a patent application with a publication number of CN117245844A, which includes an injection molding machine A and an injection molding machine B. A mold is fixed on the injection molding machine A, and the mold has a first injection port and a second injection port. The injection molding machine A is connected to the first injection port, and the injection molding machine B is connected to the second injection port, capable of simultaneously performing two-color injection molding and cooling, effectively improving the accuracy of the injection molding machine, and capable of achieving two-color injection molding with good product quality.

[0004] During the separate injection molding process of two groups of molds, they cannot be connected, thus affecting the efficiency of two-color injection molding. And during the injection molding process, the colloid is injected into the mold through the pouring gate, and the pouring gate will adhere to the mold during cooling, causing protrusions or fractures at the pouring gate. Subsequently, the personnel need to pause the injection molding and process the pouring gate and the mold.

[0005] Therefore, it is necessary to provide a two-color overmolding injection molding mold and method for processing automotive headlight masks to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a two-color overmolding injection molding mold and method for processing automotive headlight masks to solve the problem of defects in the prior art proposed in the above background art.

[0007] Based on the above idea, the present invention provides the following technical solution: A two-color overmolding injection molding mold for processing automotive headlight masks, including an operation table, on the top of which there is an injection molding device for injection molding, and further including:

[0008] A support seat is arranged on the top of the operation table, and a rotating disk is rotatably connected to one side of the support seat. Three shaping grooves for injection molding are opened on the side of the rotating disk close to the injection molding device;

[0009] Two switching disks, both of which are arranged on the front side of the rotating disk, and the two switching disks are symmetrically arranged with respect to the vertical center line of the support seat. Two first forming grooves are formed on the outer side of one of the switching disks, and two second forming grooves are formed on the outer side of the other switching disk. Injection molding grooves for injection molding are arranged in both the first forming grooves and the second forming grooves, and switching mechanisms for position transformation are arranged on one side of both switching disks;

[0010] Two sets of cutting mechanisms arranged on one side of the switching disk. The two sets of cutting mechanisms are respectively arranged on the two injection molding grooves on the switching disk, and a pushing member is arranged on the top of the cutting mechanism. During injection molding, the pushing member pushes the cutting mechanism to open the injection molding groove, and after injection molding is completed, the pushing member resets the cutting mechanism to cut the plastic at the injection molding groove after injection;

[0011] Two sets of ejecting mechanisms, which are respectively arranged on both sides of the support seat and are used to eject the waste materials truncated by the injection molding grooves.

[0012] As a further solution of the present invention: A second motor is fixedly connected to the side of the support seat away from the rotating disk. The output shaft of the second motor penetrates the support seat and is fixedly connected to the rotating disk, which is used to drive the rotating disk to rotate so that the shaping grooves are respectively docked and adapted to the first forming grooves and the second forming grooves. A fixed support plate is fixedly connected to the top of the operating table, and a first hydraulic push rod is fixedly connected to the outside of the fixed support plate. The telescopic end of the first hydraulic push rod is fixedly connected to the support seat.

[0013] As a further solution of the present invention: The cutting mechanism includes:

[0014] Two moving plates, which are symmetrically arranged with respect to the center of the injection molding groove, and cutting heads are fixedly connected to the opposite sides of the two moving plates. Both moving plates are arranged outside the switching disk;

[0015] Two connecting plates, which are respectively arranged at one ends of the two moving plates, and both connecting plates are fixedly connected to the switching disk;

[0016] A second telescopic rod and a second spring, with both ends of the second telescopic rod and the second spring fixedly connected to the connecting plate and the moving plate respectively, and the second spring is sleeved outside the second telescopic rod;

[0017] Two fixing plates fixedly connected to the tops of the moving plates, and fixed shafts are fixedly connected to the outsides of both fixing plates.

[0018] As a further solution of the present invention: The cutting mechanism further includes:

[0019] Two truncating rods, which are respectively arranged inside the two moving plates, and one ends of the two truncating rods pass through the switching disk and extend into the injection molding groove, which are used to truncate the excess injection part;

[0020] Two limiting frames fixedly connected to the top of the moving plate, with sliding shafts slidably connected inside both limiting frames. The sliding shafts are fixedly connected to the truncating rod. When the limiting frames move, the truncating rod is pushed to move through the sliding shafts.

[0021] As a further solution of the present invention: The pushing member includes:

[0022] A pushing ring, which is on the same straight line as the center of the injection molding groove, and a first telescopic rod and a first spring are fixedly connected between the pushing ring and the switching disk. The first spring is sleeved outside the first telescopic rod;

[0023] Two limiting push frames, which are respectively fixedly connected to both sides of the pushing ring, and the fixed shaft extends into the limiting push frames and is slidably connected to the limiting push frames.

[0024] As a further solution of the present invention: The ejection mechanism includes an ejection member and a linear driving member for driving the ejection member to move. The ejection member includes:

[0025] A fixed cylinder, with a contact ring arranged on the side of the fixed cylinder close to the injection molding groove;

[0026] A plurality of first racks, which are all arranged annularly around the center of the fixed cylinder, and the plurality of first racks are fixedly connected to the contact ring;

[0027] A third telescopic rod fixedly connected between the first rack and the fixed cylinder, with a third spring sleeved outside the third telescopic rod. The two ends of the third spring are respectively fixedly connected to the fixed cylinder and the first rack;

[0028] A gear meshing with the first rack, with a mounting plate rotatably connected to the outside of the gear. The mounting plate is fixedly connected to the inside of the fixed cylinder;

[0029] An ejection column, which is arranged on the front side of the contact ring and inside the contact ring;

[0030] A plurality of second racks fixedly connected to the ejection column, which respectively mesh with the plurality of gears, and guide plates are slidably connected to the outside of the plurality of second racks. The plurality of guide plates are fixedly connected to the fixed cylinder.

[0031] As a further solution of the present invention: The linear driving member includes:

[0032] A driving bracket, which is fixedly connected to the outside of the support seat, and a lead screw is rotatably connected to the outside of the driving bracket;

[0033] A pushing frame, which is fixedly connected to the fixed cylinder, and the pushing frame passes through the driving bracket and is slidably connected to the driving bracket,

[0034] The sliding seat is sleeved outside the lead screw and connected to the lead screw through a ball screw nut pair. The sliding seat is fixedly connected to the pushing frame. A third motor is fixedly connected to the outside of the driving bracket, and the output shaft of the third motor is fixedly connected to the lead screw.

[0035] As a further solution of the present invention: The switching mechanism includes:

[0036] The second hydraulic push rod is fixedly connected to the top of the operating table, and the telescopic end of the second hydraulic push rod is fixedly connected to the mounting bracket;

[0037] The mounting bracket is slidably connected to the top of the operating table, and a first motor is fixedly connected to the outside of the mounting bracket. The output shaft of the first motor passes through the mounting bracket and is fixedly connected to the switching disc.

[0038] As a further solution of the present invention: The injection molding device includes:

[0039] An injection molding machine for injection molding is arranged on the top of the operating table, and two injection barrels are arranged at the output end of the injection molding machine. The two injection barrels respectively extend to the injection molding grooves on the two switching discs;

[0040] A linear module fixedly connected to the top of the operating table, and the injection molding machine is arranged on the moving end of the linear module for driving the injection molding machine to move.

[0041] A two-color overmolding injection molding method based on the processing of automotive headlight masks is also provided: including the following steps:

[0042] Step 1: Align the shaping grooves on the rotating disc with the first shaping grooves and the second shaping grooves on the two switching discs, and then inject into the first shaping grooves through the injection molding equipment;

[0043] After the model inside the first shaping groove is formed, the pushing member pushes the cutting mechanism to cut off the waste at the injection molding groove, and by rotating the rotating disc, the first-formed model is rotated to the second shaping groove, and the injection molding equipment performs secondary color injection on the second shaping groove;

[0044] Step 3: During the rotation of the rotating disc, the switching mechanism on one side of the switching disc drives the switching disc to rotate, so that the ejecting mechanism ejects the cut waste inside the injection molding groove and cleans the injection molding groove.

[0045] Compared with the prior art, the beneficial effects of the present invention are:

[0046] 1. The switching mechanism on one side of the switching disk drives the switching disk to rotate, enabling the ejecting mechanism to eject the cut waste inside the injection slot, cleaning the injection slot. When the model after secondary injection molding rotates 60 degrees with the rotating disk, by setting an ejecting device inside the shaping slot, the completed model is ejected, thereby achieving the cyclic processing of the headlight mask and improving the overall processing efficiency.

[0047] 2. Under the action of the first spring, the pushing ring resets, and in cooperation with the second spring between the connecting plate and the moving plate, the cutting heads at one end of the two moving plates move relatively, cutting off the injection part between the injection slot and the injection barrel. And the limiting frame drives the truncating rod to reset, cutting off and separating the waste at one end inside the injection slot from the model. First, the integrity of the model is ensured, avoiding protrusions caused by injection. And the waste inside the injection slot is separated from the injection barrel, facilitating subsequent cleaning and preventing blockage of the injection slot.

[0048] 3. The first rack drives the second rack to move through the meshing gear, enabling the second rack to continue to descend. Thus, multiple second racks push the ejecting posts into the injection slot to eject the cut waste inside the injection slot, ensuring smooth injection into the injection slot. After the second rack is ejected, the moving plate and the truncating rod reset again to protect the cleaned injection slot. Description of the Drawings

[0049] The present invention will be further described below in conjunction with the drawings and embodiments.

[0050] Figure 1 is the overall structural schematic diagram of the present invention;

[0051] Figure 2 is the structural schematic diagram of the support seat of the present invention;

[0052] Figure 3 is the structural schematic diagram of the fixed support plate of the present invention;

[0053] Figure 4 is the structural schematic diagram of the support seat and the fixed support plate of the present invention;

[0054] Figure 5 is the structural schematic diagram of the rotating disk of the present invention;

[0055] Figure 6 is the structural schematic diagram of the switching disk of the present invention;

[0056] Figure 7 is the structural schematic diagram of the switching mechanism of the present invention;

[0057] Figure 8 is the cross-sectional structural schematic diagram of the switching disk of the present invention;

[0058] Figure 9 It is a schematic structural diagram of the cutting mechanism of the present invention;

[0059] Figure 10 It is a schematic structural diagram of the driving bracket of the present invention;

[0060] Figure 11 It is a schematic diagram of the linear driving member of the present invention;

[0061] Figure 12 It is a schematic diagram of the ejecting member of the present invention.

[0062] In the figure: 1, operating table; 101, fixed support plate; 102, first hydraulic push rod; 2, injection molding machine; 201, injection barrel; 202, linear module; 3, support seat; 300, protective cover; 301, rotating disk; 302, shaping groove; 303, second motor; 4, switching disk; 402, injection groove; 501, mounting bracket; 502, first motor; 504, second hydraulic push rod; 6, pushing ring; 602, first telescopic rod; 603, first spring; 604, limiting push frame; 701, moving plate; 702, cutting head; 703, limiting frame; 704, connecting plate; 705, second telescopic rod; 706, second spring; 707, fixing plate; 708, fixing shaft; 801, truncating rod; 802, sliding shaft; 9, fixing cylinder; 901, contact ring; 902, first rack; 903, third telescopic rod; 904, third spring; 905, mounting plate; 906, gear; 907, second rack; 908, guide plate; 909, ejecting column; 10, driving bracket; 1001, lead screw; 1002, sliding seat; 1003, third motor; 1004, pushing frame. Detailed implementation manners

[0063] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0064] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientation or positional relationships are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0065] As Figures 1 to 12 shown, a two-color overmolding injection molding die and method for processing automotive headlight masks include the following embodiments:

[0066] Embodiment 1: As Figure 1 , Figure 2 , Figure 3 , Figure 4 andFigure 5 As shown in the figure, it includes an operation table 1. An injection molding device for injection molding is provided on the top of the operation table 1. It also includes:

[0067] A support base 3 is provided on the top of the operation table 1. A rotating disk 301 is rotatably connected to one side of the support base 3. Three shaping grooves 302 for injection molding are provided on the side of the rotating disk 301 close to the injection molding device. A protective cover 300 is fixedly connected to one side of the support base 3 through a support plate. The protective cover 300 is used to protect the rotating disk 301;

[0068] Two switching disks 4 are provided on the front side of the rotating disk 301. The two switching disks 4 are symmetrically arranged about the vertical center line of the support base 3. Two first shaping grooves are provided on the outer side of one of the switching disks 4, and two second shaping grooves are provided on the outer side of the other switching disk 4. Injection molding grooves 402 for injection molding are provided in both the first shaping grooves and the second shaping grooves. A switching mechanism for position transformation is provided on one side of each of the two switching disks 4;

[0069] Two sets of cutting mechanisms are provided on one side of the switching disk 4. The two sets of cutting mechanisms are respectively arranged on the two injection molding grooves 402 on the switching disk 4. A pushing member is provided on the top of the cutting mechanism. During injection molding, the pushing member pushes the cutting mechanism to open the injection molding groove 402. After injection molding is completed, the pushing member resets the cutting mechanism to cut the plastic at the injection molding groove 402 after injection;

[0070] Two sets of ejecting mechanisms are provided on both sides of the support base 3, and are used to eject the waste materials truncated at the injection molding grooves 402.

[0071] In specific implementation, two-color injection molding is adopted. Two-color injection molding requires the use of a two-color mold, that is, a mold with two sets of injection devices, to inject two kinds of plastics in sequence and generate a two-color product. Therefore, in this solution, first align the shaping grooves 302 on the rotating disk 301 with the first shaping groove and the second shaping groove on the two switching disks 4, and then inject plastic into the first shaping position through an injection device to form the first shaping. After the model inside the first shaping groove is formed, the pushing member pushes the cutting mechanism to cut the waste material at the injection groove 402, and by rotating the rotating disk 301, the model formed for the first time is rotated to the second shaping groove, and the injection device performs secondary coloring injection on the second shaping groove. During the rotation of the rotating disk 301, the switching mechanism on one side of the switching disk 4 drives the switching disk 4 to rotate, so that the ejecting mechanism ejects the cut waste material inside the injection groove 402 to clean the injection groove 402. When the model after secondary injection molding rotates 60 degrees along with the rotating disk 301, through arranging a pushing device inside the shaping groove 302, the completed model is pushed out. The pushing device is driven by an existing electric push rod, which can be understood as the ejecting device in an existing mold. This is prior art and will not be further elaborated here, so as to achieve the cyclic processing of the headlight mask and improve the overall processing efficiency.

[0072] In this embodiment, as Figure 3 and Figure 4 shown, a second motor 303 is fixedly connected to the side of the support base 3 away from the rotating disk 301. The output shaft of the second motor 303 penetrates through the support base 3 and is fixedly connected to the rotating disk 301, for driving the rotation of the rotating disk 301 to enable the shaping grooves 302 to be respectively docked and adapted with the first shaping and the second shaping groove. A fixed support plate 101 is fixedly connected to the top of the operating table 1, and a first hydraulic push rod 102 is fixedly connected to the outside of the fixed support plate 101. The telescopic end of the first hydraulic push rod 102 is fixedly connected to the support base 3.

[0073] In specific implementation, when it is necessary to replace or clean the shaping groove 302, start the first hydraulic push rod 102 to drive the support base 3 to move, separate the support base 3 from the switching disk 4, so as to clean the shaping groove 302, and during the processing, drive the rotation of the rotating disk 301 by starting the output shaft of the second motor 303. The three shaping grooves 302 on the rotating disk 301 respectively perform the first shaping, the second shaping and pushing out the model, improving the overall working efficiency.

[0074] Embodiment Two: As Figure 1 、 Figure 2 and Figure 9 shown, the injection device includes:

[0075] An injection molding machine 2 for injection molding is provided on top of an operating table 1, and two injection barrels 201 are provided at the output end of the injection molding machine 2. The two injection barrels 201 respectively extend to the injection slots 402 on two switching disks 4;

[0076] A linear module 202 fixedly connected to the top of the operating table 1. The injection molding machine 2 is arranged on the moving end of the linear module 202 and is used to drive the injection molding machine 2 to move. The linear module 202 can adopt a linear slide rail to drive the injection molding machine 2 to move. This is the prior art at this time.

[0077] The cutting mechanism includes:

[0078] Two moving plates 701 are symmetrically arranged about the center of the injection slot 402, and cutting heads 702 are fixedly connected to the opposite sides of the two moving plates 701. The two moving plates 701 are both arranged outside the switching disk 4;

[0079] Two connecting plates 704 are respectively arranged at one end of the two moving plates 701, and the two connecting plates 704 are both fixedly connected to the switching disk 4;

[0080] A second telescopic rod 705 and a second spring 706. The two ends of the second telescopic rod 705 and the second spring 706 are respectively fixedly connected to the connecting plate 704 and the moving plate 701, and the second spring 706 is sleeved outside the second telescopic rod 705;

[0081] Two fixing plates 707 fixedly connected to the top of the moving plate 701. Fixed shafts 708 are fixedly connected to the outside of the two fixing plates 707.

[0082] The cutting mechanism further includes:

[0083] Two truncating rods 801 are respectively arranged inside the two moving plates 701, and one end of each of the two truncating rods 801 passes through the switching disk 4 and extends into the injection slot 402 for truncating the excess injection part;

[0084] Two limiting frames 703 fixedly connected to the top of the moving plate 701. Slide shafts 802 are slidably connected inside the two limiting frames 703. The slide shafts 802 are fixedly connected to the truncating rods 801. When the limiting frames 703 move, the truncating rods 801 are pushed to move through the slide shafts 802.

[0085] The pushing member includes:

[0086] A pushing ring 6. The pushing ring 6 is on the same straight line as the center of the injection slot 402, and a first telescopic rod 602 and a first spring 603 are fixedly connected between the pushing ring 6 and the switching disk 4. The first spring 603 is sleeved outside the first telescopic rod 602;

[0087] Two limiting push frames 604 are respectively fixedly connected to both sides of the pushing ring 6, and the fixed shaft 708 extends into the limiting push frame 604 and is slidably connected to the limiting push frame 604.

[0088] During specific implementation, when the linear module 202 on the injection molding equipment contacts the pushing ring 6, the linear module 202 first pushes the pushing ring 6 towards the switching disk 4. The limiting push frames 604 fixedly connected to both sides of the pushing ring 6 squeeze the fixed plate 707 through the fixed shaft 708, causing the two moving plates 701 to move away from each other relatively, exposing the injection molding groove 402, enabling the injection port at one end of the linear module 202 to be docked with the injection molding groove 402, ensuring the smooth progress of injection molding. And under normal conditions, the cutting head 702 can also seal the injection molding groove 402 to prevent dust from entering the injection molding groove 402 and causing blockage of the injection molding groove 402.

[0089] When the two injection molding grooves 402 move away from each other relatively, the limiting frame 703 fixedly connected to the moving plate 701 drives the sliding shaft 802 inside the limiting frame 703, causing the sliding shaft 802 to drive the cutting rod 801 to tilt and rise, thereby opening the channel of the injection molding groove 402. After injection molding is completed, the injection cylinder 201 moves away from the pushing ring 6. At this time, the pushing ring 6 is reset under the action of the first spring 603, and in cooperation with the second spring 706 between the connecting plate 704 and the moving plate 701, the cutting heads 702 at one ends of the two moving plates 701 move relatively, cutting off the injection part between the injection molding groove 402 and the injection cylinder 201. And the limiting frame 703 drives the cutting rod 801 to reset, cutting off and separating the waste material at one end inside the injection molding groove 402 from the mold, first ensuring the completion degree of the mold, avoiding protrusions caused by injection molding, and separating the waste material inside the injection molding groove 402 from the injection cylinder 201, facilitating later cleaning and preventing blockage of the injection molding groove 402.

[0090] In this embodiment, as Figure 6 、 Figure 7 and Figure 8 shown, the switching mechanism includes:

[0091] A second hydraulic push rod 504, which is fixedly connected to the top of the operating table 1, and the telescopic end of the second hydraulic push rod 504 is fixedly connected to the mounting bracket 501;

[0092] A mounting bracket 501, which is slidably connected to the top of the operating table 1, and a first motor 502 is fixedly connected to the outside of the mounting bracket 501. The output shaft of the first motor 502 passes through the mounting bracket 501 and is fixedly connected to the switching disk 4.

[0093] During specific implementation, when the rotating disk 301 rotates, part of the model is located in the first forming groove and the second forming groove on the two switching disks 4. Therefore, by starting the second hydraulic push rod 504 to drive the mounting bracket 501 to move, the switching disk 4 is separated from the support base 3. At the same time, after the waste material inside the injection molding groove 402 is cut off, the first motor 502 drives the switching disk 4 to rotate, switching the cleaned first forming groove and the second forming groove, so as to ensure subsequent continuous operation and improve the overall production efficiency.

[0094] Embodiment 3: As Figure 10 、 Figure 11 and Figure 12 shown, the ejection mechanism includes an ejection member and a linear drive member for driving the ejection member to move. The ejection member includes:

[0095] A fixed cylinder 9, and a contact ring 901 is arranged on one side of the fixed cylinder 9 close to the injection molding groove 402;

[0096] A plurality of first racks 902, the plurality of first racks 902 are all arranged in a ring around the center of the fixed cylinder 9, and the plurality of first racks 902 are fixedly connected to the contact ring 901;

[0097] A third telescopic rod 903 fixedly connected between the first rack 902 and the fixed cylinder 9, and a third spring 904 is sleeved outside the third telescopic rod 903. The two ends of the third spring 904 are respectively fixedly connected to the fixed cylinder 9 and the first rack 902;

[0098] A gear 906 meshed with the first rack 902, and a mounting plate 905 is rotatably connected to the outside of the gear 906. The mounting plate 905 is fixedly connected to the inside of the fixed cylinder 9;

[0099] An ejection post 909, the ejection post 909 is arranged on the front side of the contact ring 901 and inside the contact ring 901;

[0100] A plurality of second racks 907 fixedly connected to the ejection post 909, the plurality of second racks 907 are respectively meshed with the plurality of gears 906, and a guide plate 908 is slidably connected to the outside of each of the plurality of second racks 907. The plurality of guide plates 908 are fixedly connected to the fixed cylinder 9.

[0101] The linear drive member includes:

[0102] A drive bracket 10, the drive bracket 10 is fixedly connected to the outside of the support base 3, and a lead screw 1001 is rotatably connected to the outside of the drive bracket 10;

[0103] A push frame 1004, the push frame 1004 is fixedly connected to the fixed cylinder 9, and the push frame 1004 passes through the drive bracket 10 and is slidably connected to the drive bracket 10,

[0104] The sliding seat 1002 is sleeved outside the lead screw 1001 and connected to the lead screw 1001 through a ball nut pair. The sliding seat 1002 is fixedly connected to the pushing frame 1004. A third motor 1003 is fixedly connected to the outside of the driving bracket 10, and the output shaft of the third motor 1003 is fixedly connected to the lead screw 1001.

[0105] During specific implementation, when the injection molding groove 402 for truncating waste rotates to the side of the fixed cylinder 9, at this time, by starting the third motor 1003, the third motor 1003 drives the lead screw 1001 to rotate, the lead screw 1001 drives the sliding seat 1002 to move, the sliding seat 1002 drives the pushing frame 1004 to move, the fixed cylinder 9 approaches the pushing ring 6 in the pushing member, and the contact ring 901 contacts the pushing ring 6. Since the compression force of the third telescopic rod 903 between the first rack 902 and the third telescopic rod 903 is greater than the compression forces required by the first spring 603 and the connecting plate 704, the contact ring 901 first pushes the pushing ring 6 to move, causing the two contact rings 901 and the truncating rod 801 to move relatively away from each other, opening the injection molding groove 402. When the pushing ring 6 cannot move anymore, the first rack 902 moves in the opposite direction relative to the fixed cylinder 9, and the first rack 902 drives the second rack 907 to move through the meshing gear 906, causing the second rack 907 to continue to descend. Thus, multiple second racks 907 push the ejector post 909 into the injection molding groove 402 to eject the truncated waste inside the injection molding groove 402, ensuring the smooth injection molding of the injection molding groove 402. After the second rack 907 is pushed out, the moving plate 701 and the truncating rod 801 are reset again to protect the injection molding groove 402 after cleaning.

[0106] A two-color overmolding injection molding method based on the processing of automotive headlight masks is also provided, including the following steps:

[0107] Step 1: Align the shaping groove 302 on the rotating disk 301 with the first shaping groove and the second shaping groove on the two switching disks 4, and then inject into the first shaping groove through an injection molding device.

[0108] Step 2: After the model inside the first shaping groove is formed, the pushing member pushes the cutting mechanism to cut the waste at the injection molding groove 402, and by rotating the rotating disk 301, the first-formed model is rotated to the second shaping groove, and the injection molding device performs secondary color injection on the second shaping groove.

[0109] Step 3: During the rotation of the rotating disk 301, the switching mechanism on one side of the switching disk 4 drives the switching disk 4 to rotate, so that the ejecting mechanism ejects the cut waste inside the injection molding groove 402 to clean the injection molding groove 402. At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0110] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0111] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A two-color overmolding injection molding mold for automobile headlight mask processing, comprising an operating table (1), wherein an injection molding device for injection molding is arranged on the top of the operating table (1), characterized in that: Also includes: A support seat (3), the support seat (3) being arranged on the top of the operating table (1), and a rotating disk (301) is rotatably connected to one side of the support seat (3), and three molding grooves (302) for injection molding are provided on a side of the rotating disk (301) close to the injection molding device; Two switching disks (4), both of which are arranged on the front side of the rotating disk (301), and the two switching disks (4) are symmetrically arranged about the vertical center line of the support seat (3), one of the switching disks (4) is provided with two first molding grooves on the outside, and the other switching disk (4) is provided with two second molding grooves on the outside, the first molding groove and the second molding groove are both provided with injection grooves (402) for injection molding, and a switching mechanism for position change is provided on one side of the two switching disks (4); Two sets of cutting mechanisms are arranged on one side of the switching disk (4), and the two sets of cutting mechanisms are respectively arranged on two injection molding grooves (402) on the switching disk (4), and a pushing member is arranged on the top of the cutting mechanism. During injection molding, the pushing member pushes the cutting mechanism to open the injection molding groove (402), and after the injection molding is completed, the pushing member resets the cutting mechanism to cut off the plastic at the injection molding groove (402) after injection molding; Two sets of ejection mechanisms, the two sets of ejection mechanisms are respectively arranged on both sides of the support seat (3) and are used to eject the waste material cut off by the injection molding groove (402); The cutting mechanism comprises: Two movable plates (701), the two movable plates (701) are symmetrically arranged about the center of the injection molding groove (402), and the two movable plates (701) are fixedly connected to the cutting heads (702) on opposite sides, and the two movable plates (701) are arranged on the outside of the switching disk (4); Two connecting plates (704), the two connecting plates (704) are respectively arranged at one end of the two movable plates (701), and the two connecting plates (704) are both fixedly connected to the switching disk (4); A second telescopic rod (705) and a second spring (706), wherein two ends of the second telescopic rod (705) and the second spring (706) are respectively fixedly connected to the connecting plate (704) and the movable plate (701), and the second spring (706) is sleeved on the outside of the second telescopic rod (705); Two fixed plates (707) fixedly connected to the top of the movable plate (701), and fixed shafts (708) are fixedly connected to the outer sides of the two fixed plates (707); The cutting mechanism also includes: Two cutting rods (801), the two cutting rods (801) are respectively arranged inside the two movable plates (701), and one end of the two cutting rods (801) passes through the switching disk (4) and extends into the injection molding groove (402), so as to cut off the excess injection molding; Two limit frames (703) are fixedly connected to the top of the movable plate (701), and the two limit frames (703) are slidably connected with sliding shafts (802) inside. The sliding shafts (802) are fixedly connected to the truncation rod (801). When the limit frames (703) move, the truncation rod (801) is pushed to move by the sliding shafts (802).

2. The double-color overmolding injection molding mold based on automobile lamp mask processing according to claim 1 is characterized in that: A second motor (303) is fixedly connected to the side of the support seat (3) away from the rotating disk (301); an output shaft of the second motor (303) passes through the support seat (3) and is fixedly connected to the rotating disk (301) for driving the rotating disk (301) to rotate so that the shaping groove (302) is docked and adapted with the first shaping groove and the second shaping groove, respectively; a fixed support plate (101) is fixedly connected to the top of the operating table (1); a first hydraulic push rod (102) is fixedly connected to the outer side of the fixed support plate (101); and a telescopic end of the first hydraulic push rod (102) is fixedly connected to the support seat (3).

3. The double-color overmolding injection molding mold based on automobile lamp mask processing according to claim 1 is characterized in that: The pusher comprises: A push ring (6), wherein the push ring (6) and the center of the injection groove (402) are in the same straight line, and a first telescopic rod (602) and a first spring (603) are fixedly connected between the push ring (6) and the switching disk (4), and the first spring (603) is sleeved on the outside of the first telescopic rod (602); Two limit push frames (604) are respectively fixedly connected to two sides of the push ring (6), and the fixed shaft (708) extends into the inside of the limit push frame (604) and is slidably connected to the limit push frame (604).

4. The two-color overmolding injection molding mold based on automobile lamp mask processing according to claim 1 is characterized in that: The ejection mechanism includes an ejection member and a linear driving member for driving the ejection member to move, and the ejection member includes: A fixed cylinder (9), wherein a contact ring (901) is provided on a side of the fixed cylinder (9) close to the injection molding groove (402); A plurality of first racks (902), the plurality of first racks (902) are all arranged in a ring shape around the center of the fixed cylinder (9), and the plurality of first racks (902) are all fixedly connected to the contact ring (901); A third telescopic rod (903) is fixedly connected between the first rack (902) and the fixed cylinder (9), a third spring (904) is sleeved on the outside of the third telescopic rod (903), and two ends of the third spring (904) are respectively fixedly connected to the fixed cylinder (9) and the first rack (902); A gear (906) meshingly connected to the first rack (902), the outer side of the gear (906) being rotatably connected to a mounting plate (905), and the mounting plate (905) being fixedly connected to the interior of the fixed cylinder (9); An ejector column (909), the ejector column (909) is arranged on the front side of the contact ring (901) and on the inner side of the contact ring (901); A plurality of second racks (907) are fixedly connected to the ejection column (909), the plurality of second racks (907) are respectively meshedly connected to the plurality of gears (906), and the outer sides of the plurality of second racks (907) are all slidably connected to guide plates (908), and the plurality of guide plates (908) are fixedly connected to the fixed cylinder (9).

5. The double-color overmolding injection molding mold based on automobile lamp mask processing according to claim 4 is characterized in that: The linear drive member comprises: A driving bracket (10), the driving bracket (10) is fixedly connected to the outside of the support base (3), and the outside of the driving bracket (10) is rotatably connected to a screw rod (1001); A pushing frame (1004), the pushing frame (1004) is fixedly connected to the fixed cylinder (9), and the pushing frame (1004) passes through the driving bracket (10) and is slidably connected to the driving bracket (10). The sliding seat (1002) is sleeved on the outside of the screw rod (1001) and connected to the screw rod (1001) via a ball nut pair, and the sliding seat (1002) is fixedly connected to the pushing frame (1004). The outside of the driving bracket (10) is fixedly connected to a third motor (1003), and the output shaft of the third motor (1003) is fixedly connected to the screw rod (1001).

6. The two-color overmolding injection molding mold based on automobile lamp mask processing according to claim 1 is characterized in that: The switching mechanism comprises: A second hydraulic push rod (504), the second hydraulic push rod (504) is fixedly connected to the top of the operating table (1), and the telescopic end of the second hydraulic push rod (504) is fixedly connected to the mounting bracket (501); A mounting bracket (501) is slidably connected to the top of the operating table (1), and a first motor (502) is fixedly connected to the outside of the mounting bracket (501), and an output shaft of the first motor (502) passes through the mounting bracket (501) and is fixedly connected to the switching disk (4).

7. The two-color overmolding injection molding mold based on automobile lamp mask processing according to claim 1 is characterized in that: The injection molding device comprises: An injection molding machine (2) for injection molding, the injection molding machine (2) being arranged on the top of the operating table (1), and having two injection molding cylinders (201) arranged at the output end of the injection molding machine (2), the two injection molding cylinders (201) respectively extending to the injection molding grooves (402) on the two switching disks (4); A linear module (202) is fixedly connected to the top of the operating table (1), and the injection molding machine (2) is arranged at the moving end of the linear module (202) to drive the injection molding machine (2) to move.

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