Rapid molding equipment and method for injection molding product

Abstract

The invention relates to injection molding product forming, in particular to injection molding product rapid forming equipment and method.The injection molding product rapid forming equipment comprises a sliding support, a forming mechanism is slidably connected to the sliding support, a plurality of injection molding mechanisms are fixedly connected to the sliding support, and the forming mechanism can sequentially pass through the injection molding mechanisms and is connected with the injection molding mechanisms; the method comprises the steps that firstly, a forming mechanism is driven to move, so that the forming mechanism sequentially moves to the positions of a plurality of injection molding mechanisms and is connected with the injection molding mechanisms; 2, after the forming mechanism is connected with each injection molding mechanism, the forming mechanism is vacuumized; thirdly, the injection molding mechanism conducts rapid injection molding on the molding mechanism under the action of vacuum pressure; and injection molding raw materials can be quickly pumped into the mold for molding in a vacuum manner.

Description

Technical Field

[0001] The present invention relates to the molding of injection products, and more specifically to a rapid prototyping device and method for injection products. Background Art

[0002] In the traditional injection molding process, plastic raw materials are usually heated and melted by a screw, and then injected into the mold cavity under high pressure, and then cooled and solidified to form a product. However, for products with complex structures, thin wall thicknesses or fine features, conventional injection molding relies on high injection pressure to push the melt flow, which easily leads to insufficient filling or uneven internal stress, affecting product quality. Summary of the Invention

[0003] The purpose of the present invention is to provide a rapid prototyping device and method for injection products, which can use vacuum to quickly draw injection raw materials into the mold for molding.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A rapid prototyping device for injection products, including a sliding bracket, on which a molding mechanism is slidably connected, and a plurality of injection mechanisms are fixedly connected to the sliding bracket. The molding mechanism can sequentially pass through a plurality of injection mechanisms and be respectively connected to the plurality of injection mechanisms;

[0006] A lead screw is rotatably connected to the sliding bracket, and a driving motor for driving the lead screw to rotate is fixedly connected to the sliding bracket;

[0007] The molding mechanism includes a sliding bracket, on which a molding die is fixedly connected. The sliding bracket is slidably connected to the sliding bracket and is threadedly connected to the lead screw;

[0008] A telescopic mechanism I is fixedly connected to the sliding bracket. A lifting die is slidably connected to the telescopic end of the telescopic mechanism I. The lifting die is slidably connected in the molding die. A sealing ring is arranged between the lifting die and the molding die. A fastening die is fixedly connected to the molding die;

[0009] A telescopic mechanism II is fixedly connected to the sliding bracket. A lifting bracket I is fixedly connected to the telescopic end of the telescopic mechanism II. A plurality of insertion cylinders are fixedly connected to the lifting bracket I, and the plurality of insertion cylinders are all slidably connected to the fastening die;

[0010] The injection mechanism includes a telescopic mechanism III. An injection cavity is fixedly connected to the telescopic end of the telescopic mechanism III. A feeding pipeline is fixedly connected to the injection cavity. A plurality of insertion pipelines are fixedly connected to the bottom of the injection cavity, and the insertion pipelines can be inserted into the insertion cylinders;

[0011] A telescopic mechanism Ⅳ is fixedly connected to the injection molding cavity. A lifting bracket Ⅱ is fixedly connected to the telescopic end of the telescopic mechanism Ⅳ. A plurality of extraction pipes are fixedly connected to the lifting bracket Ⅱ, and the plurality of extraction pipes are respectively inserted into a plurality of insertion pipes;

[0012] A sealing ring is fixedly connected to the bottom of the extraction pipe. A connecting pipe is fixedly connected to the extraction pipe. A telescopic mechanism Ⅴ is fixedly connected to the extraction pipe, and the telescopic end of the telescopic mechanism Ⅴ is slidably connected within the sealing ring;

[0013] The connecting pipe is externally connected to an air pump through an air pipe;

[0014] A rapid prototyping method for injection molded products, the method comprising the following steps;

[0015] Step 1: Drive the molding mechanism to move, so that the molding mechanism sequentially moves to the positions of a plurality of injection molding mechanisms and connects with the injection molding mechanisms;

[0016] Step 2: After the molding mechanism is connected to each injection molding mechanism, the molding mechanism evacuates;

[0017] Step 3: The injection molding mechanism performs rapid injection molding on the molding mechanism under the action of vacuum pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the drawings and specific implementation methods.

[0019] Figure 1 is a schematic structural diagram of the injection molded product of the present invention;

[0020] Figure 2 is a cross-sectional view of the injection molded product of the present invention;

[0021] Figure 3 is a schematic structural diagram of the rapid prototyping equipment for injection molded products of the present invention;

[0022] Figure 4 is a schematic structural diagram of the sliding bracket of the present invention;

[0023] Figure 5 is a schematic structural diagram of the molding mechanism of the present invention;

[0024] Figure 6 is a cross-sectional view of the molding mechanism of the present invention;

[0025] Figure 7 is a cross-sectional view of the molding mechanism of the present invention;

[0026] Figure 8 is a schematic structural diagram of the injection molding mechanism of the present invention;

[0027] Figure 9It is a schematic structural diagram of the injection mechanism of the present invention;

[0028] Figure 10 It is a sectional view of the injection mechanism of the present invention;

[0029] Figure 11 It is a schematic structural diagram of the extraction pipeline of the present invention;

[0030] Figure 12 It is a sectional view of the extraction pipeline of the present invention.

[0031] In the figure: the first layer of material 1; the second layer of material 2; the third layer of material 3; the sliding bracket 4; the lead screw 41; the driving motor 42; the molding mechanism 5; the sliding bracket 51; the molding die 52; the telescopic mechanism I 53; the lifting die 54; the fastening die 55; the telescopic mechanism II 56; the lifting bracket I 57; the insertion cylinder 58; the injection mechanism 6; the telescopic mechanism III 61; the injection cavity 62; the feeding pipeline 63; the telescopic mechanism IV 64; the lifting bracket II 65; the extraction pipeline 66; the connecting pipeline 67; the sealing ring 68; the telescopic mechanism V 69; the insertion pipeline 610. Detailed implementation mode

[0032] The present invention will be further described in detail below with reference to the accompanying drawings.

[0033] As Figures 1 to 2 shown, it is an injection-molded product with a multi-layer structure prepared;

[0034] Among them, the injection-molded product has a multi-layer structure. Preferably, the injection-molded product has a three-layer structure, namely the first layer of material 1, the second layer of material 2 and the third layer of material 3. The material raw materials of the first layer of material 1, the second layer of material 2 and the third layer of material 3 are different and are set according to different usage requirements. For example, in some application scenarios, the surface of the injection-molded product needs to have a certain deformation ability, but the inside of the injection-molded product also needs a certain hard support. In this way, the first layer of material 1 and the third layer of material 3 located on the side surface can be elastic materials such as rubber, etc., and the middle second layer of material 2 is a hard material such as plastic, etc. Those skilled in the art can adjust the raw material types of the first layer of material 1, the second layer of material 2 and the third layer of material 3 according to the usage requirements;

[0035] Furthermore, as Figure 2 shown, in order to make the connection between the first layer of material 1, the second layer of material 2 and the third layer of material 3 stable, protrusions or grooves are provided on the connection surfaces of the first layer of material 1, the second layer of material 2 and the third layer of material 3. For example, grooves are provided on the first layer of material 1, and protrusions are provided on the second layer of material 2. The protrusions on the second layer of material 2 are inserted into the grooves on the first layer of material 1, thereby increasing the connection stability between the first layer of material 1 and the second layer of material 2;

[0036] AsFigures 3 to 12 As shown in the figure, the structure and functions of the rapid prototyping equipment for injection molded products will be described in detail below;

[0037] A rapid prototyping equipment for injection molded products includes a sliding bracket 4, on which a molding mechanism 5 is slidably connected. A plurality of injection molding mechanisms 6 are fixedly connected to the sliding bracket 4. The molding mechanism 5 can sequentially pass through a plurality of injection molding mechanisms 6 and be respectively connected to the plurality of injection molding mechanisms 6;

[0038] During use, as Figure 3 shown in the figure, by driving the molding mechanism 5 to slide on the sliding bracket 4, the molding mechanism 5 is sequentially moved to the positions of a plurality of injection molding mechanisms 6 and sequentially connected to the plurality of injection molding mechanisms 6. After the molding mechanism 5 is connected to the first injection molding mechanism 6, the inside of the molding mechanism 5 is evacuated, and then the molding mechanism 5 is instantaneously communicated with the first injection molding mechanism 6. The injection molding material in the first injection molding mechanism 6 enters the molding mechanism 5 through a plurality of injection points, and the injection of the first layer of material 1 is quickly completed. Then the molding mechanism 5 is separated from the first injection molding mechanism 6;

[0039] After the molding mechanism 5 is connected to the second injection molding mechanism 6, the inside of the molding mechanism 5 is evacuated, and then the molding mechanism 5 is instantaneously communicated with the second injection molding mechanism 6. The injection molding material in the second injection molding mechanism 6 enters the molding mechanism 5 through a plurality of injection points, and the injection of the second layer of material 2 is quickly completed. Then the molding mechanism 5 is separated from the second injection molding mechanism 6, and so on, and the injection molding of multiple layers of materials is sequentially completed;

[0040] By using vacuum and multi-point injection, such an injection molding method can not only perform rapid injection molding, but also effectively reduce the generation of bubbles due to the vacuum environment, improving the efficiency of injection molding processing;

[0041] The structure and functions of the sliding bracket 4 will be described in detail below;

[0042] A lead screw 41 is rotatably connected to the sliding bracket 4, and a drive motor 42 for driving the lead screw 41 to rotate is fixedly connected to the sliding bracket 4; the drive motor 42 is preferably a servo motor. The output shaft of the drive motor 42 drives the lead screw 41 to rotate. When the lead screw 41 rotates, it drives the molding mechanism 5 to move through the thread, so that the molding mechanism 5 moves on the sliding bracket 4, and the molding mechanism 5 sequentially passes through a plurality of injection molding mechanisms 6;

[0043] The structure and functions of the molding mechanism 5 and the injection molding mechanism 6 will be described in detail below;

[0044] The forming mechanism 5 includes a sliding bracket 51, on which a forming die 52 is fixedly connected. The sliding bracket 51 is slidably connected to the sliding bracket 4 and is threadedly connected to the lead screw 41;

[0045] A telescopic mechanism I 53 is fixedly connected to the sliding bracket 51. A lifting die 54 is slidably connected to the telescopic end of the telescopic mechanism I 53. The lifting die 54 is slidably connected within the forming die 52. A sealing ring is provided between the lifting die 54 and the forming die 52. A fastening die 55 is fixedly connected to the forming die 52;

[0046] A telescopic mechanism II 56 is fixedly connected to the sliding bracket 51. A lifting bracket I 57 is fixedly connected to the telescopic end of the telescopic mechanism II 56. A plurality of insertion cylinders 58 are fixedly connected to the lifting bracket I 57, and the plurality of insertion cylinders 58 are all slidably connected to the fastening die 55;

[0047] The injection molding mechanism 6 includes a telescopic mechanism III 61. An injection molding cavity 62 is fixedly connected to the telescopic end of the telescopic mechanism III 61. A feeding pipeline 63 is fixedly connected to the injection molding cavity 62. A plurality of insertion pipelines 610 are fixedly connected to the bottom of the injection molding cavity 62, and the insertion pipelines 610 can be inserted into the insertion cylinders 58;

[0048] A telescopic mechanism IV 64 is fixedly connected to the injection molding cavity 62. A lifting bracket II 65 is fixedly connected to the telescopic end of the telescopic mechanism IV 64. A plurality of extraction pipelines 66 are fixedly connected to the lifting bracket II 65, and the plurality of extraction pipelines 66 are respectively inserted into the plurality of insertion pipelines 610;

[0049] A sealing ring 68 is fixedly connected to the bottom of the extraction pipeline 66. A connecting pipeline 67 is fixedly connected to the extraction pipeline 66. A telescopic mechanism V 69 is fixedly connected to the extraction pipeline 66, and the telescopic end of the telescopic mechanism V 69 is slidably connected within the sealing ring 68;

[0050] The connecting pipeline 67 is externally connected to an air pump through an air pipe;

[0051] During use, the output shaft of the driving motor 42 rotates to drive the lead screw 41 to rotate. When the lead screw 41 rotates, it drives the sliding bracket 51 to move through the thread. The sliding bracket 51 drives the forming die 52 to move, so that the forming die 52 moves to the lower side of the first injection molding mechanism 6. The telescopic mechanism III 61 is started. The telescopic mechanism III 61 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism III 61 drives the injection molding cavity 62 to move downward. The injection molding cavity 62 drives the plurality of insertion pipelines 610 to move downward, so that the plurality of insertion pipelines 610 are respectively inserted into the plurality of insertion cylinders 58;

[0052] Meanwhile, in order to extract the original air inside the insertion cylinder 58, the telescopic mechanism V 69 is activated. The telescopic mechanism V 69 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism V 69 moves upward, so that the connecting pipe 67 is communicated with the inside of the insertion cylinder 58. The connecting pipe 67 is externally connected to an air pump through an air pipe, and the air pump extracts the gas inside the insertion cylinder 58 through the air pipe;

[0053] Activate the telescopic mechanism I 53. The telescopic mechanism I 53 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism I 53 drives the lifting die 54 to move downward, so that a vacuum state is formed inside the forming die 52. According to the thickness of the first layer of material 1 to be processed as required, adjust the downward movement distance of the lifting die 54;

[0054] Furthermore, in order to form a groove on the upper side of the first layer of material 1 to make the connection between the first layer of material 1 and the second layer of material 2 stable, activate the telescopic mechanism II 56. The telescopic mechanism II 56 drives the lifting bracket I 57 to move downward, and the lifting bracket I 57 drives a plurality of insertion cylinders 58 to move downward. At the same time, activate the telescopic mechanism III 61, so that a plurality of insertion pipes 610 move downward, and the lower end of the insertion pipe 610 is flush with the lower surface of the insertion cylinder 58;

[0055] Previously, the material to be injection-molded is introduced into the injection cavity 62. A heating mechanism is provided inside the injection cavity 62 to make the injection-molded material in a molten state. When injection molding is required, activate the telescopic mechanism IV 64. The telescopic mechanism IV 64 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism IV 64 drives the lifting bracket II 65 to move, so that the lifting bracket II 65 moves upward. The lifting bracket II 65 drives a plurality of extraction pipes 66 to move upward, so that the extraction pipes 66 are separated from the insertion pipes 610, and the insertion pipes 610 are communicated with the injection cavity 62. Then, the injection-molded material in the injection cavity 62 enters the forming die 52 through the plurality of insertion pipes 610 to form the first layer of material 1; Using the multi-point injection molding of the plurality of insertion pipes 610 in a vacuum environment, such an injection molding method can not only perform rapid injection molding, but also effectively reduce the generation of bubbles due to the vacuum environment, improving the efficiency of injection molding processing;

[0056] After injection molding is completed, the forming mechanism 5 and the injection molding mechanism 6 are separated. The output shaft of the drive motor 42 rotates to drive the lead screw 41 to rotate. When the lead screw 41 rotates, it drives the sliding bracket 51 to move through the thread, and the sliding bracket 51 drives the forming die 52 to move, so that the forming die 52 moves to the lower side of the second injection molding mechanism 6, and repeat the above processing process to sequentially process and form the second layer of material 2 and the third layer of material 3;

[0057] A rapid prototyping method for injection molded products, the method comprising the following steps;

[0058] Drive the forming mechanism 5 to move, so that the forming mechanism 5 moves to the positions of multiple injection mechanisms 6 in sequence and connects with the injection mechanisms 6; after the forming mechanism 5 is connected to each injection mechanism 6, the forming mechanism 5 evacuates; then the forming mechanism 5 is instantaneously communicated with the first injection mechanism 6, and the injection material in the first injection mechanism 6 enters the forming mechanism 5 through multiple injection points, quickly completing the injection of the first layer of material 1, and then the forming mechanism 5 is separated from the first injection mechanism 6; after the forming mechanism 5 is connected to the second injection mechanism 6, the inside of the forming mechanism 5 is evacuated, and then the forming mechanism 5 is instantaneously communicated with the second injection mechanism 6, and the injection material in the second injection mechanism 6 enters the forming mechanism 5 through multiple injection points, quickly completing the injection of the second layer of material 2, and then the forming mechanism 5 is separated from the second injection mechanism 6, and so on, successively completing the injection processing of multiple layers of materials.

Claims

1. A rapid prototyping device for injection molding products, comprising a sliding bracket (4), characterized in that: The sliding bracket (4) is slidably connected to a molding mechanism (5), and the sliding bracket (4) is fixedly connected to a plurality of injection molding mechanisms (6). The molding mechanism (5) can pass through the plurality of injection molding mechanisms (6) in sequence and be respectively connected to the plurality of injection molding mechanisms (6).

2. The rapid prototyping equipment for injection molding products according to claim 1, characterized in that: The sliding bracket (4) is rotatably connected to a screw rod (41), and the sliding bracket (4) is fixedly connected to a driving motor (42) for driving the screw rod (41) to rotate.

3. The rapid prototyping equipment for injection molding products according to claim 2, characterized in that: The molding mechanism (5) comprises a sliding bracket (51), a molding die (52) is fixedly connected to the sliding bracket (51), the sliding bracket (51) is slidably connected to the sliding bracket (4), and the sliding bracket (51) is connected to the screw rod (41) via threads.

4. The rapid prototyping equipment for injection molding products according to claim 3, characterized in that: The sliding bracket (51) is fixedly connected with a telescopic mechanism I (53), the telescopic end of the telescopic mechanism I (53) is slidably connected with a lifting mold (54), the lifting mold (54) is slidably connected in the molding mold (52), a sealing ring is provided between the lifting mold (54) and the molding mold (52), and a buckling mold (55) is fixedly connected to the molding mold (52).

5. The rapid prototyping equipment for injection molding products according to claim 4, characterized in that: The sliding bracket (51) is fixedly connected to a telescopic mechanism II (56), the telescopic end of the telescopic mechanism II (56) is fixedly connected to a lifting bracket I (57), the lifting bracket I (57) is fixedly connected to a plurality of insertion tubes (58), and the plurality of insertion tubes (58) are all slidably connected to the fastening mold (55).

6. The rapid prototyping equipment for injection molding products according to claim 5, characterized in that: The injection molding mechanism (6) comprises a telescopic mechanism III (61), the telescopic end of the telescopic mechanism III (61) is fixedly connected to an injection molding cavity (62), the injection molding cavity (62) is fixedly connected to a feed pipe (63), and the bottom of the injection molding cavity (62) is fixedly connected to a plurality of insertion pipes (610), and the insertion pipes (610) can be inserted into the insertion tube (58).

7. The rapid prototyping equipment for injection molding products according to claim 6, characterized in that: The injection cavity (62) is fixedly connected to a telescopic mechanism IV (64), the telescopic end of the telescopic mechanism IV (64) is fixedly connected to a lifting bracket II (65), the lifting bracket II (65) is fixedly connected to a plurality of extraction pipes (66), and the plurality of extraction pipes (66) are respectively inserted into the plurality of insertion pipes (610).

8. The rapid prototyping equipment for injection molding products according to claim 7, characterized in that: The bottom of the extraction pipe (66) is fixedly connected to a blocking ring (68), the extraction pipe (66) is fixedly connected to a connecting pipe (67), the extraction pipe (66) is fixedly connected to a telescopic mechanism V (69), and the telescopic end of the telescopic mechanism V (69) is slidably connected in the blocking ring (68).

9. The rapid prototyping equipment for injection molding products according to claim 8, characterized in that: The connecting pipe (67) is externally connected to an air pump via an air pipe.

10. A method for rapid prototyping of injection molded products, characterized in that: The method comprises the following steps: Step 1: driving the molding mechanism (5) to move so that the molding mechanism (5) moves to the positions of the plurality of injection molding mechanisms (6) in sequence and is connected with the injection molding mechanisms (6); Step 2: After the molding mechanism (5) and each injection molding mechanism (6) are connected, the molding mechanism (5) is evacuated; Step 3: The injection molding mechanism (6) performs rapid injection molding on the molding mechanism (5) under the action of vacuum pressure.

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