Injection mold

Abstract

An injection mold comprises a first mold core, a second mold core, an ejection mechanism and a driving device. The second mold core is located above the first mold core. When the second mold core is in contact with the first mold core, an injection molding cavity and a product cavity are formed between the first mold core and the second mold core. The ejection mechanism comprises a main ejection assembly; the main ejection rod is arranged on the main ejection assembly and penetrates through the first mold core; the central ejection assembly is arranged in the main ejection assembly; and the central ejection rod is arranged on the central ejection assembly and penetrates through the first mold core. The driving device is used for moving the central ejection assembly. When the plastic is cooled to form the injection part and the plastic product, the second mold core is separated from the first mold core, and the driving device lifts the central ejection assembly to a preset position, so that the injection part is separated from the plastic product.

Description

Technical Field

[0001] The invention relates to an injection mold, in particular to an injection mold with an ejection mechanism. Background Art

[0002] Injection molds have been widely used in the manufacturing industry to form plastic into plastic products. The injection mold can inject plastic into the injection cavity between the male mold plate and the female mold plate, and the plastic then flows into the product cavity through the injection cavity. When the plastic cools, a plastic product is formed in the product cavity, and an injection piece is formed in the injection cavity. At this time, the injection mold can drive an ejector mechanism to separate the plastic product and the injection piece and detach them from the mold plate, so that the plastic product and the injection piece can be taken out of the injection mold. However, in the process of the ejector mechanism separating the plastic product and the injection piece, debris may fall into the product cavity, thereby affecting the appearance of the plastic product.

[0003] In addition, in order to adjust the position of the plastic injection into the product cavity, a runner module (injector) is generally inserted into the template and connected to the product cavity via the injection runner in the runner module. However, the connection between the runner module and the product cavity may produce burrs on the plastic product, thereby affecting the appearance of the plastic product. Summary of the invention

[0004] In view of this, the present invention provides an injection mold that can reduce the probability of debris falling into the product cavity during the separation process of the plastic product and the injection piece. In addition, the injection mold of the present invention can reduce the probability of burrs on the plastic product at the connection between the runner module and the product cavity.

[0005] One embodiment of the present invention discloses an injection mold, including a first mold core, a second mold core, an ejection mechanism, and a driving device. The second mold core is located above the first mold core. When the second mold core contacts the first mold core, an injection cavity and a product cavity are formed between the first mold core and the second mold core. The ejection mechanism includes a main ejection assembly; a main ejection rod, which is disposed in the main ejection assembly and passes through the first mold core; a central ejection assembly, which is disposed in the main ejection assembly; and a central ejection rod, which is disposed in the central ejection assembly and passes through the first mold core. The driving device is used to move the central ejection assembly.

[0006] When the plastic in the injection cavity and the product cavity cools, a plastic product and an injection piece connected to the plastic product are formed. The second mold core is separated from the first mold core. The driving device lifts the central ejector assembly to a predetermined position so that the central ejector rod separates the injection piece from the plastic product. After the driving device lifts the central ejector assembly to the predetermined position, the central ejector assembly lifts the main ejector assembly so that the central ejector rod separates the injection piece from the first mold core, and the main ejector rod separates the plastic product from the first mold core.

[0007] According to one embodiment of the present invention, the main ejection assembly includes a bottom surface, a first limiting hole formed on the bottom surface, and a second limiting hole formed on a limiting bottom surface of the first limiting hole. The central ejection assembly is movably disposed in the first limiting hole and the second limiting hole, and the central ejection assembly includes a lifting block movably located in the first limiting hole. After the driving device lifts the central ejection assembly to the predetermined position, the lifting block pushes the limiting bottom surface so that the central ejection assembly lifts the main ejection assembly.

[0008] According to one embodiment of the present invention, the base includes a positioning groove connected to the accommodating space, and the driving device includes a stopper connected to the central ejection assembly, wherein when the ejection mechanism is located at an initial position, the stopper is located in the positioning groove, and when the ejection mechanism is located at the predetermined position, the stopper protrudes from the positioning groove.

[0009] According to one embodiment of the present invention, the injection mold further includes: a base, including a accommodating space, wherein the ejection mechanism is arranged in the accommodating space; a first template, arranged on the base, having a first accommodating groove, wherein the first mold core is arranged in the first accommodating groove; and a second template, located on the first template, having a second accommodating groove, wherein the second mold core is arranged in the second accommodating groove.

[0010] According to an embodiment of the present invention, the injection mold further includes a flow channel module, the first mold core further includes a slot, the flow channel module is disposed in the slot, and the flow channel module further includes an injection flow channel. The two ends of the injection flow channel are respectively connected to the injection cavity and the product cavity.

[0011] According to an embodiment of the present invention, the flow channel module has a first outer side surface and a second outer side surface, wherein the first outer side surface is inclined relative to the second outer side surface.

[0012] According to an embodiment of the present invention, the flow channel module further includes a groove, an extension portion of the first mold core is located in the groove, and the product cavity extends to the extension portion.

[0013] According to one embodiment of the present invention, the flow channel module further includes a first plug-in module having a first top surface, a first connecting surface connected to the first top surface, and a first injection molding groove formed on the first connecting surface; and a second plug-in module having a second top surface, a second connecting surface connected to the second top surface, and a second injection molding groove formed on the second connecting surface. Both ends of the first injection molding groove are connected to the first top surface, and both ends of the second injection molding groove are connected to the second top surface. When the first connecting surface is attached to the second connecting surface, the first injection molding groove and the second injection molding groove form the injection flow channel.

[0014] An embodiment of the present invention discloses an operation method of an injection mold, comprising injecting plastic into a product cavity between a first mold core and a second mold core and an injection cavity connected to the product cavity; after waiting for the plastic to cool, the plastic forms an injection piece in the injection cavity, and the plastic forms a plastic product in the product cavity, wherein the injection piece is connected to the plastic product; lifting the second mold core to separate the second mold core from the first mold core; lifting a central ejector assembly to enable a central ejector rod to move the injection piece and thereby separate the injection piece from the plastic product; continuously lifting the central ejector assembly to enable the central ejector assembly to further lift a main ejector assembly, thereby enabling the central ejector rod to separate the injection piece from the first mold core, and enabling a main ejector rod to separate the plastic product from the first mold core.

[0015] According to an operation method of an injection mold according to an embodiment of the present invention, the main ejector assembly includes a main bottom surface, a first limiting hole formed on the bottom surface, and a second limiting hole formed on a limiting bottom surface of the first limiting hole. The central ejector assembly is movably disposed in the first limiting hole and the first limiting hole, and the central ejector assembly includes a lifting block movably located in the first limiting hole. In the step of continuously lifting the central ejector assembly, the lifting block further pushes the limiting bottom surface so that the central ejector assembly further lifts the main ejector assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 4 is a schematic diagram of an injection mold according to a first embodiment of the present invention.

[0017] Figure 2 and Figure 3 FIG. 4 is a schematic diagram of the operation of the injection mold according to the first embodiment of the present invention.

[0018] Figure 4 FIG. 1 is an exploded view of the ejection mechanism and the stopper according to the first embodiment of the present invention.

[0019] Figure 5 FIG. 4 is a flow chart of an operating method of an injection mold according to an embodiment of the present invention.

[0020] Figure 6 Schematic diagram of a first mold core, a second mold core and a flow channel module according to a first embodiment of the present invention.

[0021] Figure 7 FIG. 4 is an exploded view of a flow channel module according to a first embodiment of the present invention.

[0022] Figure 8 Schematic diagram of a first mold core, a second mold core and a flow channel module according to a second embodiment of the present invention.

[0023] Fig. 9 FIG. 4 is a schematic diagram of a flow channel module and a first mold core according to a second embodiment of the present invention.

[0024] Fig.10 FIG. 4 is an exploded view of a flow channel module according to a second embodiment of the present invention.

[0025] Main component symbols

[0026] Injection mold 1

[0027] Base 10

[0028] Accommodation space 11

[0029] Positioning slot 12

[0030] First template 20

[0031] The first receiving groove 21

[0032] First mold 30

[0033] Lower surface 31

[0034] Slot 32

[0035] First side wall 321

[0036] Second side wall 322

[0037] Card slot 323

[0038] Extension 33

[0039] Second template 40

[0040] The second receiving groove 41

[0041] Second mold 50

[0042] Upper mold frame 60

[0043] Injection device 70

[0044] Injection pipe 71

[0045] Ejector mechanism 80

[0046] Main ejector assembly 81

[0047] First ejector plate 81a

[0048] Second ejector plate 81b

[0049] Bottom 811

[0050] Top 812

[0051] The first limiting hole 813

[0052] Limit bottom surface 8131

[0053] The second limiting hole 814

[0054] Main ejector rod 82

[0055] Central ejector assembly 83

[0056] First ejection block 83a

[0057] Second ejection block 83b

[0058] Lifting block 831

[0059] Central ejector rod 84

[0060] Driving device 90

[0061] Motor 91

[0062] Drive rod 92

[0063] Block 93

[0064] Flow channel module A1

[0065] The first plug-in module A10

[0066] First top surface A11

[0067] First connection surface A12

[0068] First injection tank A13

[0069] First outer surface A14

[0070] First card block A15

[0071] Second plug-in module A20

[0072] Second top surface A21

[0073] Second connecting surface A22

[0074] Second injection tank A23

[0075] Second outer surface A24

[0076] Second card block A25

[0077] Injection runner A30

[0078] Groove A40

[0079] Vertical direction D1

[0080] Plastic products P1

[0081] Injection part P2

[0082] Product cavity S1

[0083] Injection cavity S2

[0084] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0085] In order to facilitate those skilled in the art to understand and implement the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the present invention provides many applicable creative concepts, which can be implemented in a variety of specific forms. The specific embodiments discussed in the text as examples are only specific ways to make and use the present invention, and are not intended to limit the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0086] In addition, repeated numbers or labels may be used in different embodiments. These repetitions are only for the purpose of simply and clearly describing the present invention and do not represent any correlation between the different embodiments and / or structures discussed. It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a centrally arranged element at the same time. When an element is considered to be "set on" another element, it can be directly set on the other element or there may be a centrally arranged element at the same time.

[0087] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0088] Figure 1 FIG. 1 is a schematic diagram of an injection mold 1 according to a first embodiment of the present invention. Figure 2 and Figure 3 FIG. 1 is a schematic diagram of the operation of the injection mold 1 according to the first embodiment of the present invention. The injection mold 1 is used to shape plastic into a plastic product P1 (such as Figure 3 The injection mold 1 may include a base 10, a first mold plate 20, a first mold core 30, a second mold plate 40, a second mold core 50, and an upper mold frame 60. The base 10, the first mold plate 20, the first mold core 30, the second mold plate 40, the second mold core 50, and the upper mold frame 60 may be arranged in sequence along a vertical direction D1, and may extend perpendicularly to the vertical direction D1.

[0089] In the present embodiment, the base 10, the first template 20, the first mold core 30, the second template 40, the second mold core 50 and the upper mold frame 60 may be a rectangular parallelepiped or a plate-like structure. The widths of the first template 20, the second template 40 and the upper mold frame 60 may be the same or substantially the same. The aforementioned widths may be measured in the same direction (horizontal direction) perpendicular to the vertical direction D1. In the present invention, "substantially the same" is defined as being within the same error range of positive 10% to negative 10%, and includes the "same" state. The base 10, the first template 20, the first mold core 30, the second template 40, the second mold core 50 and the upper mold frame 60 may be made of metal material, such as steel.

[0090] The base 10 can be placed on a platform or a ground. The first mold 20 is disposed on the base 10. In this embodiment, the first mold 20 is detachably fixed to the base 10. The first mold 20 is located between the base 10 and the second mold 40. The first mold 20 can have a first receiving groove 21. The first mold core 30 can be detachably installed in the first receiving groove 21. The first mold core 30 can be replaced with another first mold core according to the shape of different plastic products P1.

[0091] The second template 40 is located above the first template 20. In this embodiment, the second template 40 can selectively contact the first template 20 or be separated from the first template 20. The second template 40 is located between the first template 20 and the upper mold frame 60. The second template 40 may have a second accommodating groove 41. The second mold core 50 is detachably installed in the second accommodating groove 41 and corresponds to the first mold core 30. In other words, the second mold core 50 is located above the first mold core 30. The second mold core 50 can be replaced with another second mold core according to the shape of different plastic products P1. The second mold core 50 can selectively contact the first mold core 30 or be separated from the first mold core 30. When the second mold core 50 contacts the first mold core 30, a product cavity S1 and an injection cavity S2 are formed between the first mold core 30 and the second mold core 50, and the injection cavity S2 is connected to the product cavity S1.

[0092] In this embodiment, the first template 20 can be a male template, and the first mold core 30 can be a male mold core. The second template 40 can be a female template, and the second mold core 50 can be a female mold core. In another embodiment, the first template 20 can be a female template, and the first mold core 30 can be a female mold core. The second template 40 can be a male template, and the second mold core 50 can be a male mold core.

[0093] The upper mold frame 60 is disposed on the second mold plate 40. In this embodiment, the second mold plate 40 is detachably fixed to the upper mold frame 60.

[0094] The injection mold 1 further includes an injection device 70 and an ejection mechanism 80. The injection device 70 is used to inject plastic into the product cavity S1. The ejection mechanism 80 is used to eject the plastic product P1 formed after the plastic in the product cavity S1 is cooled out of the first mold core 30.

[0095] The injection device 70 is disposed on the upper mold frame 60. In this embodiment, the injection device 70 includes an injection pipe 71. The injection pipe 71 is disposed on the second mold plate 40 and the second mold core 50, and is connected to the injection cavity S2. The injection device 70 injects plastic into the injection cavity S2 through the injection pipe 71. The plastic in the injection cavity S2 then flows into the product cavity S1. After the plastic is cooled and hardened, the plastic in the product cavity S1 forms a plastic product P1, and the plastic in the injection cavity S2 forms an injection piece P2, and the injection piece P2 is connected to the plastic product P1.

[0096] Figure 4: is an exploded view of the ejection mechanism 80 and the stopper 93 according to the first embodiment of the present invention. The ejection mechanism 80 is arranged in the accommodating space 11 of the base 10. The ejection mechanism 80 includes a main ejection assembly 81, a plurality of main ejection rods 82, a central ejection assembly 83, and a plurality of central ejection rods 84. The main ejection assembly 81 can be a plate-like structure and can extend perpendicularly to the vertical direction D1. The main ejection assembly 81 is located in the accommodating space 11 and can move in the accommodating space 11 along the vertical direction D1. The main ejection assembly 81 includes a bottom surface 811, a top surface 812, a first limiting hole 813, and a second limiting hole 814. The bottom surface 811 faces the bottom of the accommodating space 11, and the top surface 812 faces the first template 20. The bottom surface 811 is parallel to the top surface 812 and can extend perpendicularly to the vertical direction D1. The first limiting hole 813 is formed in the central area of ​​the bottom surface 811. The second limiting hole 814 is formed on the limiting bottom surface 8131 of the first limiting hole 813 and is formed in the central area of ​​the top surface 812. The first limiting hole 813 and the second limiting hole 814 extend along the vertical direction D1. In this embodiment, the width of the first limiting hole 813 is greater than the width of the second limiting hole 814. The shape of the first limiting hole 813 and the second limiting hole 814 in the horizontal cross section can be square.

[0097] The main ejector rod 82 is disposed on the main ejector assembly 81 and passes through the first mold plate 20 and the first mold core 30. The main ejector rods 82 may be parallel to each other and may extend along the vertical direction D1. In this embodiment, the ejection mechanism 80 may include eight main ejector rods 82, but is not limited thereto. The ejection mechanism 80 may include at least two, three, or more than four main ejector rods 82.

[0098] In this embodiment, the main ejection assembly 81 includes a first ejection plate 81a and a second ejection plate 81b. The second ejection plate 81b is detachably fixed to the first ejection plate 81a. The first ejection plate 81a and the second ejection plate 81b can extend perpendicularly to the vertical direction D1, and can move in the accommodating space 11 along the vertical direction D1. The main ejection rod 82 passes through the second ejection plate 81b, and the second ejection plate 81b fixes the main ejection rod 82 to the first ejection plate 81a. In addition, the above-mentioned first limiting hole 813 is formed in the first ejection plate 81a, and the above-mentioned second limiting hole 814 is formed in the first ejection plate 81a and the second ejection plate 81b.

[0099] The central ejection component 83 is disposed in the main ejection component 81. The central ejection component 83 may be a block-shaped structure and may extend along the vertical direction D1. The central ejection component 83 is located in the first limiting hole 813 and the second limiting hole 814 and may move in the first limiting hole 813 and the second limiting hole 814 along the vertical direction D1. In other words, the first limiting hole 813 and the second limiting hole 814 restrict the central ejection component 83 from moving along the vertical direction D1. The central ejection component 83 includes a plurality of lifting blocks 831 disposed on at least two side surfaces of the central ejection component 83. In another embodiment, the central ejection component 83 includes a lifting block 831 disposed on one side surface of the central ejection component 83. The lifting block 831 is movably located in the first limiting hole 813 and may contact the side wall of the first limiting hole 813. In this embodiment, the maximum width of the lifting block 831 is substantially the same as the maximum width of the first limiting hole 813, and is greater than the maximum width of the second limiting hole 814. The maximum width is measured along the same direction perpendicular to the vertical direction D1.

[0100] The central ejector rod 84 is disposed on the central ejector assembly 83 and passes through the first mold plate 20 and the first mold core 30. The central ejector rods 84 may be parallel to each other and may extend along the vertical direction D1. In this embodiment, the ejection mechanism 80 may include five central ejector rods 84, but is not limited thereto. The ejection mechanism 80 may include at least one, two, or more than three central ejector rods 84.

[0101] In the present embodiment, the central ejection assembly 83 includes a first ejection block 83a and a second ejection block 83b. The second ejection block 83b is detachably fixed to the first ejection block 83a. The first ejection block 83a and the second ejection block 83b can move in the first limiting hole 813 and the second limiting hole 814 along the vertical direction D1. The central ejection rod 84 passes through the second ejection block 83b, and the second ejection block 83b fixes the central ejection rod 84 to the first ejection block 83a. In addition, the lifting block 831 is disposed on the side wall of the first ejection block 83a. The width of the first ejection block 83a and the second ejection block 83b may be substantially the same as the width of the second limiting hole 814. The above width is measured in the same direction perpendicular to the vertical direction D1.

[0102] like Figures 1 to 3As shown, the driving device 90 is disposed in the base 10 to move the central ejection assembly 83 along the vertical direction D1. In this embodiment, the driving device 90 includes a motor 91, a driving rod 92 and a stopper 93. The motor 91 can control the driving rod 92 to move along the vertical direction D1. The stopper 93 is located on the driving rod. The base 10 further includes a positioning groove 12 connected to the accommodating space 11. The stopper 93 is movably disposed in the positioning groove 12 and can be moved out of the positioning groove 12 via the driving rod. The width of the stopper 93 is the same or substantially the same as the width of the positioning groove 12. In other words, the positioning groove 12 can limit the movement of the stopper 93 along the vertical direction D1. In this embodiment, the stopper 93 can be fixed to the bottom side of the central ejection assembly 83 and contact the top end of the driving rod 92.

[0103] Figure 5 FIG. 1 is a flow chart of an operation method of an injection mold 1 according to an embodiment of the present invention. In step S10, Figure 1 As shown, the second mold core 50 contacts the first mold core 30, and an injection cavity S2 and a product cavity S1 are formed between the first mold core 30 and the second mold core 50. The injection device 70 injects plastic into the injection cavity S2, and the plastic in the injection cavity S2 flows into the product cavity S1. The ejection mechanism 80 is located at an initial position. When the above-mentioned ejection mechanism 80 is located at the initial position, the stopper 93 is located in the upper positioning groove 12. The central ejection assembly 83 and the main ejection assembly 81 are located at the bottom of the accommodating space 11. The lifting block 831 is separated from the limiting bottom surface 8131. The main ejector rod 82 contacts the product cavity S1, and the central ejector rod 84 contacts the injection cavity S2.

[0104] In step S20, if Figure 1 and Figure 2 As shown, wait for the plastic to cool down. After the plastic cools down, the plastic forms an injection piece P2 in the injection cavity S2, and the plastic forms a plastic product P1 in the product cavity S1. Since the injection cavity S2 is connected to the product cavity S1, the injection piece P2 is connected to the plastic product P1.

[0105] In step S30, if Figure 2 As shown, the second mold plate 40 and the second mold core 50 are lifted to separate the second mold core 50 from the first mold core 30. At this time, the plastic product P1 and the injection piece P2 are exposed from the first mold core 30.

[0106] In step S40, if Figure 2As shown, the driving device 90 lifts the central ejector assembly 83 to a predetermined position so that the central ejector rod 84 moves the injection piece P2 and separates the injection piece P2 from the plastic product P1. In step S40, the driving rod 92 of the ejector mechanism 80 pushes the stopper 93 so that the stopper 93 protrudes from the positioning groove 12 and the lifting block 831 contacts the limiting bottom surface 8131. As the lifting block 831 is lifted, the central ejector assembly 83 and the central ejector rod 84 are lifted along the vertical direction D1. In other words, in the example shown in FIG. Figure 1 In the initial position, the distance between the lifting block 831 and the limiting bottom surface 8131 is the distance that the central ejector rod 84 is lifted upward. After being lifted, the central ejector rod 84 passes through the injection cavity S2 of the first mold core 30 and lifts the injection piece P2 upward, thereby breaking the connection between the injection piece P2 and the plastic product P1, causing the injection piece P2 to separate from the plastic product P1.

[0107] In step S50, if Figure 3 As shown, the central ejector assembly 83 is continuously lifted so that the ejector mechanism 80 is in a final position. Figure 2 In the process of continuing to lift the central ejector assembly 83 to the final position from the predetermined position, the lifting block 831 of the central ejector assembly 83 pushes the limiting bottom surface 8131 along the vertical direction D1 to make the central ejector assembly 83 further lift the main ejector assembly 81. At this time, the central ejector rod 84 ejects the injection part P2 out of the injection cavity S2 of the first mold core 30 and detaches from the injection cavity S2 of the first mold core 30. The main ejector rod 82 passes through the product cavity S1 of the first mold core 30, and then ejects the plastic product P1 out of the product cavity S1 of the first mold core 30 and detaches from the product cavity S1 of the first mold core 30.

[0108] By means of the injection mold 1 and the method for operating the injection mold 1 of the present embodiment, the ejection stroke of the main ejector assembly 81 and the main ejector rod 82 can be reduced, thereby reducing the overall volume of the injection mold 1. In addition, before the plastic product P1 is separated from the product cavity S1 of the first mold core 30, the injection piece P2 is separated from the plastic product P1, thereby reducing the debris generated when the injection piece P2 is separated from the plastic product P1 and falling into the product cavity S1 of the first mold core 30, thereby improving the appearance of the plastic product P1.

[0109] Figure 6 FIG. 1 is a schematic diagram of a first mold core 30 , a second mold core 50 and a flow channel module A1 according to a first embodiment of the present invention. Figure 6 The sections presented are perpendicular to Figures 1 to 3 The cross section presented. Figure 7 The first mold core 30 further includes a plurality of slots 32. Figure 1 and Figure 6As shown, the injection mold 1 includes two flow channel modules A1, and the first mold core 30 includes two slots 32, but the present invention is not limited thereto. The slots 32 are formed on the lower surface 31 of the first mold core 30. Each of the flow channel modules A1 is disposed in the slot 32 via the lower surface 31 of the first mold core 30.

[0110] The slot 32 has a first side wall 321 and a second side wall 322. The first side wall 321 is opposite to the second side wall. In this embodiment, the first side wall 321 is inclined relative to the vertical direction D1. The second side wall 322 can extend along the vertical direction D1. The first side wall 321 can be inclined relative to the second side wall 322.

[0111] In this embodiment, the flow channel module A1 includes a first plug-in module A10 and a second plug-in module A20. The first plug-in module A10 includes a first top surface A11, a first connecting surface A12, a first injection groove A13, a first outer surface A14, and a first block A15. The first connecting surface A12 is connected to the first top surface A11 and can extend perpendicular to the vertical direction D1. The first injection groove A13 is formed on the first connecting surface A12 and is arc-shaped. Both ends of the first injection groove A13 are connected to the first top surface A11. The first outer surface A14 is connected to the first top surface A11 and is inclined relative to the vertical direction D1. In this embodiment, the angle between the first outer surface A14 and the vertical direction D1 is in the range of 1 degree to 10 degrees. The angle between the first outer surface A14 and the vertical direction D1 can be the same or substantially the same as the angle between the first side wall 321 of the slot 32 and the vertical direction D1. The first block A15 is disposed at the bottom of the first outer surface A14.

[0112] The second insertion module A20 includes a second top surface A21, a second connection surface A22, a second injection molding groove A23, a second outer surface A24, and a second block 25. The second connection surface A22 is connected to the second top surface A21 and can extend perpendicular to the vertical direction D1. The second injection molding groove A23 is formed on the second connection surface A22. The two ends of the second injection molding groove A23 are connected to the above-mentioned first top surface A11 and are arc-shaped. When the first connection surface A12 is attached to the second connection surface A22, the first injection molding groove A13 and the second injection molding groove A23 form an injection molding channel A30. The injection molding channel A30 is arc-shaped. When the channel module A1 is inserted into the slot 32, the two ends of the injection molding channel A30 are respectively connected to the injection molding cavity S2 and the product cavity S1. The two ends of the injection molding channel A30 are connected to the top surface (the first top surface A11 and the second top surface A21) of the channel module A1.

[0113] The second outer surface A24 is connected to the second top surface A21 and extends along the vertical direction D1. In other words, the second outer surface A24 is parallel to the second side wall 322 of the slot 32. The first outer surface A14 is inclined relative to the second outer surface A24. The second card block A25 is disposed at the bottom of the second outer surface A24. When the first plug-in module A10 and the second plug-in module A20 are inserted into the slot 32, the first card block A15 and the second card block A25 are located in the card slot 323 at the bottom of the slot 32.

[0114] According to the design of the flow channel module A1 and the slot 32 of the present embodiment, when the flow channel module A1 is inserted upward into the slot 32 along the vertical direction D1, the flow channel module A1 can be more tightly inserted into the first mold core 30 and reduce the probability of burrs on the surface of the plastic product P1, thereby improving the appearance of the plastic product P1.

[0115] Figure 8 Schematic diagram of a first mold core 30 , a second mold core 50 and a flow channel module A1 according to a second embodiment of the present invention. Fig. 9 FIG. 1 is a schematic diagram of a flow channel module A1 and a first mold core 30 according to a second embodiment of the present invention. Figure 8 and Fig. 9 The presented section positions correspond to Figures 1 to 3 The cross section presented. Fig.10 FIG. 4 is an exploded view of a flow channel module A1 according to a second embodiment of the present invention.

[0116] In the second embodiment, an extension portion 33 of the first mold core 30 is located in the slot 32, and the product cavity S1 of the first mold core 30 extends to the extension portion 33. In this embodiment, the extension portion 33 can be separated from the two opposite side walls of the slot 32 or separated from at least one side wall of the slot 32. The flow channel module A1 further includes a groove A40 formed on the top surface (the first top surface A11 and the second top surface A21) of the flow channel module A1. The groove A40 is located above the injection flow channel A30, and the groove A40 is located between the two ends of the injection flow channel A30. In addition, the groove A40 matches the shape of the extension portion 33. After the flow channel module A1 is inserted into the slot 32, the extension portion 33 is located in the groove A40, and the surface of the extension portion 33 can fit the groove A40.

[0117] By designing the groove A40 of the injection runner A30 and the extension portion 33 of the first mold core 30 , the connection between the plastic product P1 and the injection piece P2 can be positioned in an inconspicuous area of ​​the appearance of the plastic product P1 , thereby improving the overall appearance of the plastic product P1 .

[0118] In addition, in the second embodiment, the first outer surface A14 and the second outer surface A24 of the flow channel module A1 are both inclined relative to the vertical direction D1. The angle between the second outer surface A24 and the vertical direction D1 is in the range of 1 degree to 10 degrees. The distance between the top of the first outer surface A14 and the top of the second outer surface A24 is smaller than the distance between the bottom of the first outer surface A14 and the bottom of the second outer surface A24. In addition, the second side wall 322 (such as Figure 6 As shown) is inclined relative to the vertical direction D1.

[0119] According to the design of the flow channel module A1 and the slot 32 of the present embodiment, when the flow channel module A1 is inserted upward into the slot 32 along the vertical direction D1, the flow channel module A1 can be more tightly inserted into the first mold core 30 and reduce the probability of burrs on the surface of the plastic product P1, thereby improving the appearance of the plastic product P1.

[0120] For ordinary technicians in this field, other corresponding changes or adjustments can be made based on the creative scheme and creative concept of the present invention in combination with the actual needs generated, and these changes and adjustments should fall within the scope of protection of the claims of the present invention.

Claims

1. An injection mold, characterized in that: include:

1. The first model; a second mold core, located on the first mold core, wherein when the second mold core contacts the first mold core, an injection cavity and a product cavity are formed between the first mold core and the second mold core; An ejection mechanism, comprising: a main ejector assembly; A main ejector rod is disposed on the main ejector assembly and passes through the first mold core; a central ejector assembly disposed within the main ejector assembly; and a central ejector rod disposed on the central ejector assembly and passing through the first mold core; and a driving device for moving the central ejector assembly; When the plastics in the injection cavity and the product cavity are cooled to form a plastic product and an injection piece connected to the plastic product, the second mold core is separated from the first mold core, and the driving device lifts the central ejector assembly to a predetermined position so that the central ejector rod separates the injection piece from the plastic product; When the driving device lifts the central ejector assembly to the predetermined position, the central ejector assembly lifts the main ejector assembly so that the central ejector rod separates the injection piece from the first mold core, and the main ejector rod separates the plastic product from the first mold core.

2. The injection mold according to claim 1, characterized in that: The main ejection assembly includes a bottom surface, a first limiting hole formed on the bottom surface, and a second limiting hole formed on a limiting bottom surface of the first limiting hole; The central ejection assembly is movably disposed in the first limiting hole and the second limiting hole, and the central ejection assembly includes a lifting block movably located in the first limiting hole. After the driving device lifts the central ejection assembly to the predetermined position, the lifting block pushes the limiting bottom surface so that the central ejection assembly lifts the main ejection assembly.

3. The injection mold according to claim 1, characterized in that: The base includes a positioning groove connected to the accommodating space, and the driving device includes a stopper connected to the central ejection assembly, wherein when the ejection mechanism is located at an initial position, the stopper is located in the positioning groove, and when the ejection mechanism is located at the predetermined position, the stopper protrudes from the positioning groove.

4. The injection mold according to claim 1, characterized in that: Also includes: A base, comprising a containing space, wherein the ejection mechanism is disposed in the containing space; a first template, disposed on the base, having a first receiving groove, wherein the first mold core is disposed in the first receiving groove; and A second template is located on the first template and has a second receiving groove, wherein the second mold core is arranged in the second receiving groove.

5. The injection mold according to claim 1, characterized in that: It further includes a flow channel module, the first mold core further includes a slot, the flow channel module is disposed in the slot, and the flow channel module further includes an injection flow channel. The two ends of the injection channel are respectively connected to the injection cavity and the product cavity.

6. The injection mold according to claim 5, characterized in that: The flow channel module has a first outer side surface and a second outer side surface, wherein the first outer side surface is inclined relative to the second outer side surface.

7. The injection mold according to claim 5, characterized in that: The flow channel module further includes a groove, an extension portion of the first mold core is located in the groove, and the product cavity extends to the extension portion.

8. The injection mold according to claim 5, characterized in that: The flow channel module further comprises: a first plug-in module having a first top surface, a first connecting surface connected to the first top surface, and a first injection molding groove formed on the first connecting surface; and A second plug-in module having a second top surface, a second connecting surface connected to the second top surface, and a second injection molding groove formed on the second connecting surface; Wherein both ends of the first injection molding groove are connected to the first top surface, and both ends of the second injection molding groove are connected to the second top surface; When the first connection surface is attached to the second connection surface, the first injection groove and the second injection groove form the injection flow channel.

9. A method for operating an injection mold, characterized in that: include: Injecting plastic into a product cavity between a first mold core and a second mold core and an injection cavity connected to the product cavity; After the plastic is cooled, the plastic forms an injection piece in the injection cavity, and the plastic forms a plastic product in the product cavity, wherein the injection piece is connected to the plastic product; Lifting the second mold core to separate the second mold core from the first mold core; Lifting a central ejector assembly so that a central ejector rod moves the injection piece and separates the injection piece from the plastic product; The central ejector assembly is continuously lifted, so that the central ejector assembly further lifts a main ejector assembly, thereby allowing the central ejector rod to separate the injection piece from the first mold core, and allowing a main ejector rod to separate the plastic product from the first mold core.

10. The method for operating an injection mold according to claim 9, characterized in that: The main ejection assembly includes a main bottom surface, a first limiting hole formed on the bottom surface, and a second limiting hole formed on a limiting bottom surface of the first limiting hole; The central ejection assembly is movably disposed in the first limiting hole and the first limiting hole, and the central ejection assembly includes a lifting block movably located in the first limiting hole. The step of continuously lifting the central ejector assembly further includes the step of the lifting block pushing the limiting bottom surface so that the central ejector assembly further lifts the main ejector assembly.

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