Toy vehicle wheel injection molding assembly forming system and injection molding process

Abstract

The toy car wheel injection molding assembly forming system comprises a first injection molding device, a second injection molding device, an assembly mechanical arm and a blanking mechanical arm. The first injection molding device is used for forming a hub and can automatically separate the hub from a first nozzle material when the mold is opened. The assembly mechanical arm is used for blanking the first nozzle material and can place the hub in the second injection molding device to perform in-mold injection with a tire to form an integrated toy car wheel. The second injection molding device can automatically separate the toy car wheel from a second nozzle material when the mold is opened. The blanking mechanical arm is used for blanking the toy car wheel and the second nozzle material respectively. The toy car wheel injection molding assembly forming system has high automation efficiency, better forming effect of the hub and the tire, and a stable and reliable structure. The application also provides an injection molding process for forming a toy car wheel by using the above-mentioned toy car wheel injection molding assembly forming system.

Description

Technical Field

[0001] This invention relates to the field of toy assembly and production technology, and in particular to a toy wheel injection molding assembly system and injection molding process. Background Technology

[0002] In toy cars, to ensure the lifespan of the toy tires and provide a better user experience, rubber tires are typically fitted over the rims. The rims connect to the toy car, and the tires reduce wheel vibrations and effectively protect the rims, extending the tires' lifespan. Toy rims and tires are generally manufactured using injection molding. After injection molding, the sprue gates are removed before assembly. For some toy cars designed for dynamic play, adhesive is applied after assembly to ensure a tighter fit between the tire and rim, preventing the tire from slipping or detaching.

[0003] In existing technologies, tire injection molding, sprue removal, assembly, and gluing processes are all performed on different equipment. Currently, tire-rim assembly is still partially done manually, which is inefficient. Manual assembly requires forcefully prying open the hard rubber tire to insert the rim, a laborious process prone to incomplete assembly due to insufficient force or damage to the tire or rim due to excessive force. Furthermore, some equipment used for assembling rims and tires has a complex structure and assembles them one by one, also resulting in low assembly efficiency. Additionally, for wheels glued together, after intensive play with toys, the glue can easily fail due to impacts or moisture, leading to cracks or even component detachment.

[0004] Therefore, it is necessary to provide a toy wheel injection molding system that can simplify the assembly process, improve the assembly effect, and increase efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a toy wheel injection molding system that simplifies the assembly process, improves the assembly effect, and increases efficiency.

[0006] Another objective of this invention is to provide an injection molding process that is more efficient and produces better molding results.

[0007] To achieve the above objectives, the present invention provides a toy wheel injection molding assembly system suitable for molding toy wheels. The toy wheel includes a hub and a tire, and includes a first injection molding machine, a second injection molding machine, an assembly robot, and a unloading robot. The first injection molding machine includes a first injection mold, which includes a first fixed mold assembly and a first moving mold assembly. The first moving mold assembly and the first fixed mold assembly are closed to form multiple hubs. The first moving mold assembly and the first fixed mold assembly are opened to automatically separate the multiple hubs from the first sprue material. The assembly robot is movably disposed between the first injection molding machine and the second injection molding machine. The assembly robot includes a first picking assembly and a second picking assembly that operate synchronously. The first picking assembly is used to pick up multiple hubs, and the second picking assembly is used to pick up the first sprue material. The component moves to the first waste box, and the second picking robot moves to discharge the first sprue material into the first waste box; the second injection molding equipment includes a second injection mold, which includes a second fixed mold assembly and a second moving mold assembly. The assembly robot places multiple wheel hubs into the second moving mold assembly; the wheel hubs are injection molded into a toy wheel in the second fixed mold assembly and the second moving mold assembly and the tire mold. The second moving mold assembly and the second fixed mold assembly open the mold to automatically separate the multiple toy wheels from the second sprue material; the unloading robot is movably set on one side of the second injection molding equipment. The unloading robot includes a first unloading assembly and a second unloading assembly that move synchronously. The unloading robot moves into the second injection mold and picks up the toy wheels by means of the first unloading assembly and the second unloading assembly, and then unloads them respectively.

[0008] Compared with existing technologies, the toy wheel injection molding assembly system of the present invention includes a first injection molding machine, a second injection molding machine, an assembly robot, and a unloading robot. The first injection molding machine is used to mold the wheel hub and can automatically separate the wheel hub from the first sprue material when the mold opens. The assembly robot is used to unload the first sprue material and can place the wheel hub in the second injection molding machine for in-mold injection molding with the tire to form an integral toy wheel. The second injection molding machine can automatically separate the toy wheel from the second sprue material when the mold opens. The unloading robot is used to unload the toy wheel and the second sprue material separately. The toy wheel injection molding assembly system of the present invention has high automation efficiency, better molding effect of wheel hub and tire, and a more stable and reliable overall structure.

[0009] Preferably, the first fixed mold assembly includes a first fixed template, a first mold core is disposed within the first fixed template, and a plurality of first inserts are disposed within the first mold core; the first moving mold assembly includes a first moving template, a first mold core is disposed within the first moving template, and a plurality of second inserts are disposed within the first mold core; the first fixed template and the first moving template are closed to form a first mold cavity for forming a wheel hub between the first mold core and the first mold core.

[0010] Preferably, the second fixed mold assembly includes a second fixed template, a second mold core is disposed within the second fixed template, and a plurality of third inserts are disposed within the second mold core; the second moving mold assembly includes a second moving template, a second mold core is disposed within the second moving template, and a plurality of fourth inserts are disposed within the second mold core. The second fixed template and the second moving template are closed to form a second mold cavity for molding a tire between the second mold core and the second mold core. The wheel hub is placed in the second mold cavity and positioned by the third inserts and the fourth inserts.

[0011] Preferably, the second mold core has multiple first cavities, each of which is provided with a third insert, and the second mold core has multiple second cavities, each of which is provided with a fourth insert; wherein the depth of the second cavity is greater than the depth of the first cavity; the first cavity and the second cavity cooperate to form a second mold cavity for molding a tire.

[0012] Preferably, a first channel is formed in the first cavity, and a third insert is installed in the first channel. The first cavity has a first texture on the periphery of the first channel. The first texture is used to form the tread pattern on one side of the tire. The first texture is formed by laser engraving.

[0013] Preferably, a second channel is provided in the second cavity, and a fourth insert is installed in the second channel. The second cavity has a second texture on the periphery of the second channel. The second texture covers the inner wall of the second cavity. The second texture is used to form the tread of the tire and the tread on the other side. The second texture is formed by laser engraving.

[0014] Preferably, the second fixed mold assembly also includes a backing plate, which is located on the side of the second fixed mold plate away from the second moving mold assembly. The backing plate has a through-hole for mounting cavity, and a hot runner plate is provided in the mounting cavity. Heating pipes are provided on both sides of the hot runner plate, and the hot runner plate is connected to the second fixed mold plate by conduits. The hot runner plate is in the form of a double Y-shaped cross-connection.

[0015] Preferably, a horn insert is provided in the second mold core or the second mold insert, and the horn insert has multiple flow channels, each flow channel being connected to a second mold cavity; the second mold core and the second mold insert are opened to allow the sprue material to detach from the tire at a position away from the tire tread.

[0016] Preferably, the first insert is the same as the third insert, and the second insert is the same as the fourth insert. The first insert has a first forming part for forming the first end face of the hub, and the third insert has a first positioning part for positioning the first end face. The second insert has a second forming part for forming the second end face of the hub, and the fourth insert has a second positioning part for positioning the second end face.

[0017] To achieve another objective mentioned above, the present invention also provides an injection molding process, which, according to the above-described toy wheel injection molding assembly system, is applied to the molding of a toy wheel, comprising the following steps: S1, the wheel hub is formed in the first injection molding equipment; S2, the assembly robot simultaneously picks up the wheel hub and the first sprue material in the first injection molding equipment, automatically discharges the first sprue material between the first injection molding equipment and the second injection molding equipment, and then places the wheel hub in the second injection molding equipment; S3, after the wheel hub is positioned in the second injection molding equipment, the tire is formed on the outer ring of the wheel hub and the two are combined into one toy wheel; S4, the unloading robot simultaneously picks up the toy wheel and the second sprue material in the second injection molding equipment, and then unloads the toy wheel and the second sprue material respectively.

[0018] Compared with existing technologies, the injection molding process of this invention pre-forms the wheel hub using a first injection molding machine, and the wheel hub and the first sprue material are automatically separated during mold opening, eliminating the need for manual sprue removal. An assembly robot simultaneously removes the wheel hub and the first sprue material from the first injection molding machine, then removes the first sprue material, and places the wheel hub into a second injection molding machine. After positioning the wheel hub in the second injection molding machine, a tire is injection molded onto the outer ring of the wheel hub. The tire and wheel hub are injection molded together in the mold, forming a single, stable, and reliable toy tire. This injection molding process simplifies the assembly process, resulting in better assembly quality and higher efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of a toy wheel injection molding system provided in an embodiment of the present invention.

[0021] Figure 2 yes Figure 1 A cross-sectional view of the first injection mold.

[0022] Figure 3 yes Figure 2 A cross-sectional view of the first mold core and the first mold insert.

[0023] Figure 4 yes Figure 1 A cross-sectional view of the second injection mold.

[0024] Figure 5 yes Figure 4 The structure explodes.

[0025] Figure 6yes Figure 4 Cross-sectional view of the second mold core and the second mold insert.

[0026] Figure 7 yes Figure 5 Structural diagram of the second mold core and the second mold insert.

[0027] Figure 8 yes Figure 7 The structural diagram of the second core in the middle.

[0028] Figure 9 yes Figure 8 A structural diagram of the second mold core and the second mold insert from another angle.

[0029] Figure 10 yes Figure 9 The structural diagram of the second core.

[0030] Figure 11 This is a flow chart of the injection molding process for a toy tire provided by the present invention.

[0031] Explanation of reference numerals in the attached figures: 1000. Toy wheel injection molding system; 1001. Wheel hub; 1002. Tire; 1003. Toy wheel; 1004. Second sprue material; 100. First injection molding machine; 200. Second injection molding machine; 300. Assembly robot; 400. Unloading robot; 10. First injection mold; 11. First fixed mold plate; 110. First mold core; 111. First insert; 12. First moving mold plate; 120. First mold core; 121. Second insert; 13. First mold cavity; 20. Second injection mold; 21. Heat insulation plate; 22. Panel; 23. Backing plate; 231. Mounting cavity; 24. Hot runner plate; 25. Second fixed mold plate; 250. Second mold core; 251. Third insert; 252. First cavity; 253. First texture; 26. Second moving mold plate; 260. Second mold core; 261. Fourth insert; 262. Second cavity; 263. Second texture; 27. Ejection mechanism; 28. Horn insert; 2000, Injection molding process. Detailed Implementation

[0032] To illustrate the technical content and structural features of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0033] Please see Figures 1 to 6This invention provides a toy wheel injection molding assembly system 1000, suitable for molding toy wheels 1003, which include a hub 1001 and a tire 1002. The toy wheel injection molding assembly system 1000 includes a first injection molding machine 100, a second injection molding machine 200, an assembly robot 300, and a material unloading robot 400. The first injection molding machine 100 includes a first injection mold 10, which includes a first fixed mold assembly and a first moving mold assembly. The first moving mold assembly and the first fixed mold assembly close together to form multiple hubs 1001. The first moving mold assembly and the first fixed mold assembly open to automatically separate the multiple hubs 1001 from the first sprue material, eliminating the need for manual sprue removal, resulting in higher efficiency and better molding effect. An assembly robot 300 is movably positioned between the first injection molding machine 100 and the second injection molding machine 200. The assembly robot 300 includes a first picking component and a second picking component that operate synchronously. The first picking component picks up multiple wheel hubs 1001, and the second picking component picks up first sprue material. The first and second picking components move synchronously and pick up materials simultaneously, simultaneously picking up the wheel hubs 1001 and the first sprue material from the first injection molding machine 100. The first and second picking components move synchronously to a first waste frame, and the second picking robot operates to discharge the first sprue material into the first waste frame. On the other hand, the second injection molding machine 200 includes a second injection mold 20, which includes a second fixed mold assembly and a second moving mold assembly. After discharging the first sprue material, the assembly robot 300 places the multiple wheel hubs 1001 into the second moving mold assembly. The wheel hub 1001 is integrally injection molded with the tire 1002 within the second fixed mold assembly and the second moving mold assembly to form a toy wheel 1003. This eliminates the need for assembly and gluing, resulting in higher efficiency and a more stable and reliable structure. The second moving mold assembly and the second fixed mold assembly open to automatically separate multiple toy wheels 1003 from the second sprue material 1004, eliminating the need for manual sprue removal and further increasing efficiency. Additionally, a material unloading robot 400 is movably mounted on one side of the second injection molding equipment 200. The material unloading robot 400 includes a first unloading component and a second unloading component that operate synchronously. The material unloading robot 400 moves into the second injection mold 20 and uses the first unloading component to pick up the toy wheels 1003 and the second unloading component to pick up the second sprue material 1004, then unloads them separately, making operation convenient and efficient.

[0034] Compared with the prior art, the toy wheel injection molding assembly system 1000 of the present invention includes a first injection molding machine 100, a second injection molding machine 200, an assembly robot 300, and a unloading robot 400. The first injection molding machine 100 is used to mold the wheel hub 1001 and can automatically separate the wheel hub 1001 from the first sprue material during mold opening. The assembly robot 300 is used to unload the first sprue material and can place the wheel hub 1001 into the second injection molding machine 200 for in-mold injection molding with the tire 1002, forming a toy wheel 1003 as a single unit. The second injection molding machine 200 can automatically separate the toy wheel 1003 from the second sprue material 1004 during mold opening. The unloading robot 400 is used to unload the toy wheel 1003 and the second sprue material 1004 separately. The toy wheel injection molding assembly system 1000 of the present invention has high automation efficiency, better molding effect of the wheel hub 1001 and tire 1002, and a stable and reliable structure.

[0035] Please see Figure 2 and Figure 3 In some optional embodiments, the first fixed mold assembly includes a first fixed template 11, within which a first mold core 110 is disposed, and within the first mold core 110 are a plurality of first inserts 111. Conversely, the first moving mold assembly includes a first moving template 12, within which a first mold core 120 is disposed, and within the first mold core 120 are a plurality of second inserts 121. Specifically, the first fixed template 11 and the first moving template 12 are closed to form a first mold cavity 13 for forming the wheel hub 1001 between the first mold core 110 and the first mold core 120. Multiple wheel hubs 1001 are formed within the multiple first mold cavities 13, and then, upon mold opening, all multiple wheel hubs 1001 separate from the first sprue material, eliminating the need for sprue trimming, resulting in higher efficiency and better forming effect.

[0036] Please see Figures 4 to 10 In some optional embodiments, the second fixed mold assembly includes a second fixed template 25, within which a second mold core 250 is disposed, and within the second mold core 250 are a plurality of third inserts 251. Conversely, the second movable mold assembly includes a second movable template 26, within which a second mold core 260 is disposed, and within the second mold core 260 are a plurality of fourth inserts 261. Specifically, the second fixed template 25 and the second movable template 26 are closed to form a second mold cavity for molding the tire 1002 between the second mold core 250 and the second mold core 260. The wheel hub 1001 is placed within the second mold cavity and positioned by the third inserts 251 and the fourth inserts 261. Then, in-mold injection molding is performed, resulting in a toy wheel 1003 formed integrally with the tire 1002 and the wheel hub 1001. This not only eliminates the need for assembly and gluing, making molding more convenient, but also results in a more stable and reliable structure.

[0037] Please see Figures 4 to 10 In some optional embodiments, the second mold core 250 has multiple first cavities 252, and each first cavity 252 is provided with a third insert 251. The second mold core 260 has multiple second cavities 262, and each second cavity 262 is provided with a fourth insert 261. The depth of the second cavity 262 is greater than the depth of the first cavity 252. The first cavities 252 and the second cavities 262 cooperate to form a second mold cavity for molding the tire 1002. Since the depth of the second cavity 262 is greater than the depth of the first cavity 252, when the second fixed mold plate 25 and the second moving mold plate 26 drive the second mold core 250 and the second mold core 260 to open the mold, not only will the toy wheel 1003 separate from the second sprue 1004, but the toy wheel 1003 will also separate from the first cavity 252, leaving the toy wheel 1003 within the second cavity 262. The second moving mold plate 26 is connected to an ejector mechanism 27 on the side away from the second fixed mold plate 25. The ejector mechanism 27 can eject the toy wheel 1003 a certain distance for the unloading robot arm 400 to pick it up. Since the hub 1001 and the tire 1002 are integrally molded into the toy wheel 1003, and the toy wheel 1003 has a hub 1001, it can be better demolded in the second cavity 262 than a single soft tire 1002, making it easier to eject and demold, and the demolding effect is better.

[0038] Please see Figures 7 to 10 In some optional embodiments, a first channel is formed within the first cavity 252, and a third insert 251 is installed within the first channel. A first texture 253 is provided around the periphery of the first channel in the first cavity 252. The first texture 253 is used to form the tread pattern on one side of the tire 1002, and is formed by laser engraving. Conversely, a second channel is formed within the second cavity 262, and a fourth insert 261 is installed within the second channel. A second texture 263 is provided around the periphery of the second channel in the second cavity 262, and the second texture 263 covers the inner wall of the second cavity 262. The second texture 263 is used to form the tread of the tire 1002 and the tread pattern on the other side, and is formed by laser engraving. Processing the mold texture with a laser to produce fine textures at the micron or even nanometer level is faster than traditional chemical etching and CNC machining, resulting in better texture forming effect and precision.

[0039] Please see Figures 4 to 6In some optional embodiments, the second fixed mold assembly includes a heat insulation plate 21, a panel 22, a pad 23, a second fixed mold plate 25, a second moving mold plate 26, and an ejection mechanism 27 arranged sequentially. The pad 23 is located on the side of the second fixed mold plate 25 away from the second moving mold assembly, and a mounting cavity 231 is formed through the pad 23. A hot runner plate 24 is disposed within the mounting cavity 231. Specifically, heating pipes are provided on both sides of the hot runner plate 24, and the hot runner plate 24 is connected to the second fixed mold plate 25 via conduits. The hot runner plate 24 is in a double-Y shape with intersecting cross-connections to better cooperate with multiple second mold cavities, resulting in better heating and molding effects.

[0040] Please see Figures 7 to 10 In some optional embodiments, the second mold core 250 or the second mold insert 260 is provided with multiple horn inserts 28, each horn insert 28 having multiple flow channels, each flow channel connecting to a second mold cavity. The horn inserts 28 allow the second mold core 250 and the second mold insert 260 to open, allowing the sprue material to detach from the tire 1002 at a position away from the tire 1002 tread. The horn inserts 28 have a submerged injection mechanism, enabling automatic gate disconnection while maintaining a beautiful product appearance, greatly improving production efficiency and yield.

[0041] Please see Figures 2 to 10 In some optional embodiments, the first insert 111 is the same as the third insert 251, and the second insert 121 is the same as the fourth insert 261. Specifically, the first insert 111 has a first forming portion for forming the first end face of the hub 1001, and the third insert 251 has a first positioning portion for positioning the first end face. On the other hand, the second insert 121 has a second forming portion for forming the second end face of the hub 1001, and the fourth insert 261 has a second positioning portion for positioning the second end face. The first insert 111 and the second insert 121 cooperate to form the hub 1001 in the first injection mold 10, and the third insert 251 and the fourth insert 261 cooperate to position the hub 1001 in the second injection mold 20, so that the hub 1001 is injection molded into the inner mold of the second injection mold 20 to form a tire 1002, so that the hub 1001 and the tire 1002 form an integral toy wheel 1003. The second positioning part of the fourth insert 261 can effectively position the hub 1001 so that the hub 1001 is well placed in the second cavity 262 and moves with the second moving mold assembly.

[0042] Please see Figure 11 The present invention also provides an injection molding process 2000, which, according to the above-mentioned toy wheel injection molding assembly system 1000, is applied to the molding of a toy wheel 1003, and includes the following steps: S1, the wheel hub 1001 is formed in the first injection molding equipment 100. When the first injection mold 10 opens, the wheel hub 1001 is automatically separated from the first sprue material, eliminating the need for the sprue trimming process, making the operation more convenient and efficient.

[0043] S2, the assembly robot 300 simultaneously picks up the wheel hub 1001 and the first sprue material within the first injection molding machine 100, automatically unloads the first sprue material between the first injection molding machine 100 and the second injection molding machine 200, and then places the wheel hub 1001 into the second injection molding machine 200. The assembly robot 300 can slide between the first injection molding machine 100 and the second injection molding machine 200. It can simultaneously pick up the wheel hub 1001 and the first sprue material within the first injection molding machine 100 and automatically unload the first sprue material between the first injection molding machine 100 and the second injection molding machine 200. Furthermore, the first material-picking component of the assembly robot 300 can also place the wheel hub 1001 into the second injection molding machine 200, making operation convenient and highly efficient.

[0044] S3, after positioning the hub 1001 in the second injection molding equipment 200, a tire 1002 is formed on the outer ring of the hub 1001, and the two are integrated toy wheel 1003. The assembly robot 300 places the hub 1001 in the second cavity 262, and pre-positions the hub 1001 by the fourth insert 261 in the second injection molding. Then the assembly robot 300 withdraws from the second injection equipment, and the second moving mold assembly slides close to the second fixed mold assembly. The third insert 251 in the second fixed mold assembly cooperates with the fourth insert 261 in the second moving mold assembly to position the hub 1001 in the second injection mold 20, and a second mold cavity for injection molding the tire 1002 is formed on the outer periphery of the hub 1001. The hub 1001 and the tire 1002 are integrally injection molded into the toy wheel 1003 in the second mold cavity.

[0045] S4, the unloading robot 400 simultaneously picks up the toy wheel 1003 and the second sprue 1004 in the second injection molding equipment 200, and then unloads the toy wheel 1003 and the second sprue 1004 respectively.

[0046] Compared with existing technologies, the injection molding process 2000 of the present invention pre-forms the wheel hub 1001 in the first injection molding equipment 100, and the wheel hub 1001 and the first sprue material are automatically separated during mold opening, eliminating the need for manual sprue removal. The assembly robot 300 simultaneously removes the wheel hub 1001 and the first sprue material from the first injection molding equipment 100, then unloads the first sprue material, and places the wheel hub 1001 into the second injection molding equipment 200. After positioning the wheel hub 1001 in the second injection molding equipment 200, a tire 1002 is injection molded onto the outer ring of the wheel hub 1001. The tire 1002 and the wheel hub 1001 are injection molded together in the mold, forming a single, stable, and reliable toy tire 1002. The injection molding process 2000 of the present invention simplifies the assembly molding process, resulting in better assembly molding effects and higher efficiency.

[0047] In other embodiments, a first injection molding device is used to injection mold the wheel hub 1001, and then the wheel hub 1001 automatically separates from the first sprue material upon mold opening. A second injection molding device 200 is used to injection mold the tire 1002, and the tire 1002 automatically separates from the second sprue material 1004 upon mold opening. An assembly robot 300 automatically picks up the wheel hub 1001 and the first sprue material, and then unloads the first sprue material. Simultaneously, an unloading robot 400 automatically picks up the second sprue material 1004 and unloads it, while the tire 1002 remains fixed within the second cavity 262. The wheel hub 1001 is then assembled into the tire 1002, and the mold is closed again, allowing the wheel hub 1001 and the tire 1002 to be better bonded together.

[0048] like Figures 1 to 11 As shown, the injection molding process 2000 of the present invention uses a toy wheel injection molding assembly system 1000 to mold a toy tire 1002. The toy wheel injection molding assembly system 1000 includes a first injection molding machine 100, a second injection molding machine 200, an assembly robot 300, and a unloading robot 400. The first injection molding machine 100 is used to mold the wheel hub 1001 and can automatically separate the wheel hub 1001 from the first sprue material during mold opening. The assembly robot 300 is used to unload the first sprue material and can place the wheel hub 1001 into the second injection molding machine 200 for in-mold injection molding with the tire 1002, forming a toy wheel 1003 integrally formed from the wheel hub 1001 and the tire 1002. The second injection molding machine 200 can automatically separate the toy wheel 1003 from the second sprue material 1004 during mold opening. The unloading robot 400 is used to unload the toy wheel 1003 and the second sprue material 1004 separately. The toy wheel injection molding assembly system 1000 of this invention has high automation efficiency, better molding effect of wheel hub 1001 and tire 1002, and a stable and reliable structure. The injection molding process 2000 of this invention simplifies the assembly molding process, and has better assembly molding effect and higher efficiency.

[0049] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are within the scope of the present invention.

Claims

1. A toy wheel injection molding assembly system, suitable for molding toy wheels, said toy wheel comprising a hub and a tire, characterized in that, The assembly robot includes a first injection molding machine, a second injection molding machine, an assembly robot, and a unloading robot. The first injection molding machine includes a first injection mold, which comprises a first fixed mold assembly and a first moving mold assembly. The moving mold assembly and the first fixed mold assembly close to form a plurality of wheel hubs. The moving mold assembly and the first fixed mold assembly open to automatically separate the plurality of wheel hubs from the first sprue material. The assembly robot is movably positioned between the first and second injection molding machines. The assembly robot includes a first picking assembly and a second picking assembly that operate synchronously. The first picking assembly picks up the plurality of wheel hubs, and the second picking assembly picks up the first sprue material. The first picking assembly and the second picking assembly move to a first waste collection box, and the second picking robot actuates to remove the first sprue material. The material is fed into the first waste box; the second injection molding equipment includes a second injection mold, which includes a second fixed mold assembly and a second moving mold assembly. The assembly robot places multiple wheel hubs into the second moving mold assembly; the wheel hubs are injection molded into the tire mold in the second fixed mold assembly and the second moving mold assembly to form a toy wheel. The second moving mold assembly and the second fixed mold assembly open the mold to automatically separate the multiple toy wheels from the second sprue material; the unloading robot is movably disposed on one side of the second injection molding equipment. The unloading robot includes a first unloading assembly and a second unloading assembly that move synchronously. The unloading robot moves into the second injection mold and picks up the toy wheels by means of the first unloading assembly and the second unloading assembly, and then unloads them respectively.

2. The toy wheel injection molding system according to claim 1, characterized in that, The first fixed mold assembly includes a first fixed template, in which a first mold core is disposed, and in which a plurality of first inserts are disposed; the first moving mold assembly includes a first moving template, in which a first mold core is disposed, and in which a plurality of second inserts are disposed; the first fixed template and the first moving template are closed to form a first mold cavity for forming the wheel hub between the first mold core and the first mold core.

3. The toy wheel injection molding assembly system according to claim 2, characterized in that, The second fixed mold assembly includes a second fixed template, within which a second mold core is disposed, and within which a plurality of third inserts are disposed; the second moving mold assembly includes a second moving template, within which a second mold core is disposed, and within which a plurality of fourth inserts are disposed. The second fixed template and the second moving template are closed to form a second mold cavity for molding the tire between the second mold core and the second mold core. The wheel hub is placed in the second mold cavity and positioned by the third inserts and the fourth inserts.

4. The toy wheel injection molding system according to claim 3, characterized in that, The second mold core has multiple first cavities, each of which is provided with the third insert. The second mold core has multiple second cavities, each of which is provided with the fourth insert. The depth of the second cavity is greater than the depth of the first cavity. The first cavity and the second cavity cooperate to form the second mold cavity for molding the tire.

5. The toy wheel injection molding system according to claim 4, characterized in that, The first cavity has a first channel, the third insert is installed in the first channel, the first cavity has a first texture on the periphery of the first channel, the first texture is used to form the tire tread on one side of the tire, and the first texture is formed by laser engraving.

6. The toy wheel injection molding system according to claim 4, characterized in that, The second cavity has a second channel, and the fourth insert is installed in the second channel. The second cavity has a second texture on the periphery of the second channel. The second texture covers the inner wall of the second cavity. The second texture is used to form the tread of the tire and the tread on the other side. The second texture is formed by laser engraving.

7. The toy wheel injection molding system according to claim 3, characterized in that, The second fixed mold assembly also includes a backing plate, which is located on the side of the second fixed mold plate away from the second moving mold assembly. The backing plate has a through-hole for mounting cavity, and a hot runner plate is provided in the mounting cavity. Heating pipes are provided on both sides of the hot runner plate. The hot runner plate is connected to the second fixed mold plate by a conduit. The hot runner plate is in the form of a double Y-shape with cross connections.

8. The toy wheel injection molding system according to claim 4, characterized in that, The second mold core or the second mold insert is provided with a horn insert, and the horn insert is provided with a plurality of flow channels, each of which is connected to a second mold cavity; the second mold core and the second mold insert are opened to allow the sprue material to be separated from the tire at a position away from the tire tread.

9. The toy wheel injection molding system according to claim 3, characterized in that, The first insert is the same as the third insert, and the second insert is the same as the fourth insert. The first insert has a first forming part for forming the first end face of the hub, and the third insert has a first positioning part for positioning the first end face. The second insert has a second forming part for forming the second end face of the hub, and the fourth insert has a second positioning part for positioning the second end face.

10. An injection molding process, comprising the toy wheel injection molding assembly system according to any one of claims 1-9, applied to the molding of a toy wheel, characterized in that, Includes the following steps: S1, the wheel hub is formed in the first injection molding equipment; S2, the assembly robot simultaneously picks up the wheel hub and the first sprue material in the first injection molding equipment, automatically discharges the first sprue material between the first injection molding equipment and the second injection molding equipment, and then places the wheel hub in the second injection molding equipment; S3, After the wheel hub is positioned in the second injection molding equipment, the tire is formed on the outer ring of the wheel hub and the two are combined into one toy wheel; S4, the unloading robot simultaneously picks up the toy wheel and the second sprue material in the second injection molding equipment, and then the unloading robot unloads the toy wheel and the second sprue material respectively.

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