Mold ejection structure and mold

Abstract

The utility model discloses a mold ejection structure and a mold. The mold ejection structure comprises an inner mold provided with a groove, and the bottom wall of the groove is provided with a first guide hole and a second guide hole; the bottom plate is provided with a first stepped hole; the needle plate is provided with a third guide hole and a mounting part; the first ejection assembly is arranged in the first guide hole, the third guide hole and the first stepped hole in a penetrating mode, a stopping part is arranged on the lower portion of the first stepped hole, an injection molding rib groove is defined by the upper end of the first ejection assembly and the groove wall of the groove, a second abutting part is arranged at the lower end of the first ejection assembly, and a first interval is formed between the second abutting part and the first stepped face; the first ejection assembly is further provided with a third abutting part. The elastic piece is pressed between the first ejection assembly and the stop part; and the second ejection assembly is arranged in the second guide hole in a penetrating mode, and the third abutting part abuts against the hole wall of the third guide hole and / or the second ejection assembly upwards. According to the scheme, in the ejection process of the transparent plastic panel, the positions, where the rib plates are arranged, of the transparent plastic panel do not have the problems of breakage and ejection marks.

Description

Technical Field

[0001] The utility model relates to injection molding equipment technology, and more specifically, to a mold ejection structure and a mold. Background Art

[0002] With the rapid development of injection molding technology, transparent plastic products are being used more and more. Since any molding defects of transparent plastic products will be directly exposed on the product appearance, the appearance requirements of transparent plastic products are extremely high.

[0003] A mold for injection molding a transparent plastic panel includes a second ejection assembly and an inner mold, a needle plate and a bottom plate arranged in sequence from top to bottom. The inner mold includes a main body and an inner mold insert. The inner mold insert is located on one side of the main body and encloses the main body to form a groove with an opening facing upward. The main body is provided with an injection molding rib groove with an opening facing upward, and the injection molding rib groove is adjacent to the groove. The second ejection assembly includes a second push block and a second push rod. The second push block is located in the groove. The upper end of the second push rod can be moved up and down through the bottom wall of the groove and is fixedly connected to the second push block. The lower end of the second push rod is fixed to the needle plate. A transparent plastic panel is formed on the main body. The transparent plastic panel forms a rib plate at the position of the injection molding rib groove and forms a flange in the groove. During the ejection process, the injection molding machine pushes the needle plate to move upward, and the needle plate drives the second ejection assembly to move upward together. The second ejection assembly pushes the flange of the transparent plastic panel upward, so that the transparent plastic panel is separated from the main body. Since the injection bonding force between the side surface of the rib plate and the inner side surface of the injection rib groove is relatively large, during the ejection process of the transparent plastic panel, the position where the rib plate is set on the transparent plastic panel is prone to breakage and whitening problems. Utility Model Content

[0004] The embodiment of the utility model provides a mold ejection structure. During the ejection process of the transparent plastic panel, the position where the rib plate is arranged on the transparent plastic panel will not have the problem of breakage and whitening.

[0005] The embodiment of the utility model also provides a mold.

[0006] The mold ejection structure provided by the embodiment of the utility model comprises: an inner mold, provided with a groove opening upward, the bottom wall of the groove having a first guide hole and a second guide hole; a bottom plate located below the inner mold, the bottom plate having a first stepped hole, the first stepped hole having a first stepped surface facing downward; a needle plate located between the inner mold and the bottom plate, the needle plate having a third guide hole and a mounting portion, the first guide hole, the third guide hole and the first stepped hole corresponding in position, the second guide hole and the mounting portion corresponding in position; a first ejection component penetrated through the first guide hole, the third guide hole and the first stepped hole, the upper end of the first ejection component having a first pushing portion, the first pushing portion being located in the groove, the first pushing portion and the groove wall of the groove enclosing an injection rib groove opening upward, the lower end of the first ejection component having a second abutting portion, The second abutment is located in the first stepped hole and below the first stepped surface, a first interval is formed between the second abutment and the first stepped surface, the first stepped surface is configured to block the second abutment downwardly, and the first ejection assembly further comprises a third abutment; an elastic member, a stopper is provided at the lower portion of the first stepped hole, the stopper is located below the first stepped surface, the elastic member is located above the stopper and is pressed between the first ejection assembly and the stopper; and a second ejection assembly is penetrated through the second guide hole, the lower end of the second ejection assembly is provided at the mounting portion, the upper end of the second ejection assembly is located in the groove and comprises a second pushing portion, the second pushing portion is located at one side of the first pushing portion, and the third abutment is upwardly abutted against at least one of the hole wall of the third guide hole and the second ejection assembly.

[0007] In some exemplary embodiments, the first ejection assembly includes a first push block, a first push rod and a first push block seat, the first push rod is inserted into the first guide hole, the third guide hole and the first step hole, the first push block seat has a second step hole, the second step hole has a second step surface facing downward, the first push block seat is located between the needle plate and the stop portion, and is sleeved on the first push rod, the first push block seat has the second abutment portion, the lower end of the first push rod has a fourth abutment portion facing upward and abutting against the second step surface, the elastic member is pressed between the fourth abutment portion and the stop portion, and is sleeved on the first push rod, the first push block is arranged in the groove and fixedly connected to the first push rod, the first push block includes the first push portion, and the first push block seat and / or the first push block also include the third abutment portion.

[0008] In some exemplary embodiments, the first push rod is a split structure.

[0009] In some exemplary embodiments, the second ejection assembly includes a second push block and a second push rod, the second push block is located in the groove and on one side of the first ejection assembly, and the second push block includes the second push portion, the upper end of the second push rod is passed through the second guide hole and fixedly connected to the second push block, and the lower end of the second push rod is disposed on the mounting portion.

[0010] In some exemplary embodiments, the needle plate includes an ejector panel and an ejector base plate, the ejector panel is located above the ejector base plate, the mounting portion is located on the ejector panel, and the third guide hole is located on the ejector panel and the ejector base plate.

[0011] In some exemplary embodiments, the mounting portion is a third stepped hole, the third stepped hole has a third stepped surface facing downward, the second push rod includes a second push rod body and a second push block seat, the second push block seat is arranged in the third stepped hole and has a fifth abutting portion, the fifth abutting portion abuts upward against the third stepped surface, the lower end of the second push block seat abuts downward against the top surface of the ejector base plate, the upper end of the second push rod body is penetrated through the second guide hole, and the lower end of the second push rod body is connected to the second push block seat.

[0012] In some exemplary embodiments, the elastic member is a coil spring.

[0013] In some exemplary embodiments, the mold ejection structure further includes: a stop block fixedly disposed in the first stepped hole and below the first stepped surface, the stop block including the stop portion.

[0014] In some exemplary embodiments, the inner mold includes a main body and an inner mold insert, the inner mold insert is located on one side of the main body and encloses the groove with the main body, the first ejection component is located between the main body and the second ejection component, and the injection rib groove is located on the side of the first pushing portion that is away from the second ejection component.

[0015] The mold provided by the embodiment of the utility model includes the mold ejection structure described in any of the above embodiments.

[0016] The technical solution proposed in the embodiment of the utility model is as follows: during the ejection process, the injection molding machine pushes the needle plate to move upward, and the needle plate drives the second ejection assembly to move upward together, and the first ejection assembly moves upward together with the needle plate under the push of the elastic member, so that the third abutting portion remains in upward abutment with the hole wall of the third guide hole and at least one of the second ejection assemblies, so that the second pushing portion pushes the flange of the transparent plastic panel upward, and the first pushing portion pushes the position of the transparent plastic panel adjacent to the rib plate upward, and the rib plate can be easily loosened from the injection molding rib groove; when the second abutting portion abuts upward against the first step surface, the first ejection assembly stops moving upward, and the needle plate continues to drive the second ejection assembly to move upward, and the hole wall of the third guide hole and at least one of the second ejection assemblies are separated from the third abutting portion and continue to move upward, and finally the second pushing portion completely ejects the transparent plastic panel from the inner mold, and in this solution, the position where the rib plate is set on the transparent plastic panel will not have the problem of breakage and whitening.

[0017] Reset process: the injection molding machine pushes the needle plate to move downward, and the needle plate drives the second ejection assembly to move downward together. When the hole wall of the third guide hole and at least one of the second ejection assemblies abut downward against the third abutting portion, as the needle plate drives the second ejection assembly to continue to move downward, the hole wall of the third guide hole and at least one of the second ejection assemblies push the first ejection assembly to move downward, causing the first ejection assembly to compress the elastic part, and the second abutting portion disengages from the first step surface and moves downward until the needle plate moves downward to the initial position, at which time the distance between the second abutting portion and the first step surface is the first interval.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.

[0020] Figure 1 A schematic cross-sectional view of a mold ejection structure provided in some embodiments;

[0021] Figure 2 for Figure 1 The enlarged structural diagram of the A part of the mold ejection structure shown;

[0022] Figure 3 for Figure 1 The enlarged structural diagram of part B of the mold ejection structure shown;

[0023] Figure 4 A schematic cross-sectional structure diagram of a mold provided for some embodiments.

[0024] The corresponding relationship between the reference numerals and the component names is as follows:

[0025] 100 inner mold, 110 groove, 111 first guide hole, 112 second guide hole, 120 main body, 130 inner mold insert, 200 bottom plate, 210 first stepped hole, 211 first stepped surface, 300 needle plate, 310 third guide hole, 320 mounting portion, 321 third stepped surface, 330 ejector panel, 340 ejector bottom plate, 400 first ejector assembly, 410 injection rib groove, 420 first push block, 421 first push portion, 422 third abutment portion, 430 first push block seat, 431 second abutment portion, 432 The second stepped hole, 433 the second stepped surface, 434 the third abutting portion, 440 the first push rod, 441 the fourth abutting portion, 500 the elastic member, 600 the stop block, 610 the avoidance groove, 700 the second ejection assembly, 710 the second push block, 711 the second push portion, 720 the second push rod body, 730 the second push block seat, 731 the fifth abutting portion, 810 the square iron, 820 the B plate, 830 the A plate, 840 the hot runner hot plate, 850 the panel, 860 the injection molding chamber, 900 the transparent plastic panel, 910 the flange, 920 the rib plate. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the embodiments of the utility model will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0027] like Figures 1 to 3As shown, the mold ejection structure provided by the embodiment of the utility model includes: an inner mold 100, the inner mold 100 is provided with a groove 110 with an opening facing upward, and the bottom wall of the groove 110 has a first guide hole 111 and a second guide hole 112; a bottom plate 200, the bottom plate 200 is located below the inner mold 100, the bottom plate 200 has a first stepped hole 210, and the first stepped hole 210 has a first stepped surface 211 facing downward; a needle plate 300, the needle plate 300 is located between the inner mold 100 and the bottom plate 200, and the needle plate 300 has a third The guide hole 310 and the mounting portion 320, the first guide hole 111, the third guide hole 310 and the first stepped hole 210 correspond to each other, and the second guide hole 112 and the mounting portion 320 correspond to each other; the first ejection assembly 400 is penetrated by the first guide hole 111, the third guide hole 310 and the first stepped hole 210, and the upper end of the first ejection assembly 400 has a first pushing portion 421, the first pushing portion 421 is located in the groove 110, and the first pushing portion 421 and the groove wall of the groove 110 are surrounded to form an injection molding with the opening facing upward The rib groove 410, the lower end of the first ejection assembly 400 has a second abutment portion 431, the second abutment portion 431 is located in the first stepped hole 210 and below the first stepped surface 211, and there is a first interval between the second abutment portion 431 and the first stepped surface 211, and the first stepped surface 211 is configured to block the second abutment portion 431 downward, and the first ejection assembly 400 also has a third abutment portion; the elastic member 500, the lower portion of the first stepped hole 210 is provided with a stopper portion, and the stopper portion is located below the first stepped surface 211 The elastic member 500 is located above the stopper and is pressed between the first ejection assembly 400 and the stopper; and the second ejection assembly 700 is passed through the second guide hole 112, the lower end of the second ejection assembly 700 is arranged on the mounting portion 320, the upper end of the second ejection assembly 700 is located in the groove 110 and has a second pushing portion 711, the second pushing portion 711 is located on one side of the first pushing portion 421, and the third abutting portion abuts upward against the hole wall of the third guide hole 310 and at least one of the second ejection assembly 700.

[0028] Ejection process: the injection molding machine pushes the needle plate 300 to move upward, the needle plate 300 drives the second ejection assembly 700 to move upward together, and the first ejection assembly 400 moves upward together with the needle plate 300 under the push of the elastic member 500, so that the third abutting portion remains upwardly abutted against the hole wall of the third guide hole 310 and at least one of the second ejection assembly 700, so that the second pushing portion 711 pushes the flange 910 of the transparent plastic panel 900 upward, and the first pushing portion 421 of the first ejection assembly 400 pushes the position of the transparent plastic panel 900 adjacent to the rib plate 920 upward, so that the rib plate 920 can easily be aligned with the injection molding rib groove 410 is loosened; when the second abutting portion 431 abuts upward against the first step surface 211, the first ejection assembly 400 stops moving upward (the first ejection assembly 400 moves up by the first interval), and the needle plate 300 continues to drive the second ejection assembly 700 to move upward, and at least one of the hole wall of the third guide hole 310 and the second ejection assembly 700 is separated from the third abutting portion and continues to move upward. Finally, the second pushing portion 711 of the second ejection assembly 700 completely ejects the transparent plastic panel 900 from the inner mold 100. In this solution, the position where the rib plate 920 is set on the transparent plastic panel will not have the problem of breakage and whitening.

[0029] Reset process: the injection molding machine pushes the needle plate 300 to move downward, and the needle plate 300 drives the second ejection assembly 700 to move downward together. When the hole wall of the third guide hole 310 and at least one of the second ejection assembly 700 abut downward against the third abutting portion, as the needle plate 300 drives the second ejection assembly 700 to continue to move downward, the hole wall of the third guide hole 310 and at least one of the second ejection assembly 700 push the first ejection assembly 400 to move downward, so that the first ejection assembly 400 compresses the elastic member 500, and the second abutting portion 431 disengages from the first step surface 211 and moves downward until the needle plate 300 moves downward to the initial position. At this time, the distance between the second abutting portion 431 and the first step surface 211 is the first interval.

[0030] In some examples, such as Figures 1 to 3As shown, the first ejection assembly 400 includes a first push block 420, a first push rod 440 and a first push block seat 430. The first push rod 440 is inserted into the first guide hole 111, the third guide hole 310 and the first stepped hole 210. The first push block seat 430 has a second stepped hole 432. The second stepped hole 432 has a second stepped surface 433 facing downward. The first push block seat 430 is located between the needle plate 300 and the stopper and is sleeved on the first push rod 440. The first push block seat 430 30 has a second abutment portion 431, the lower end of the first push rod 440 has a fourth abutment portion 441 that abuts upward against the second step surface 433, the elastic member 500 is pressed between the fourth abutment portion 441 and the stop portion, and is sleeved on the first push rod 440, the first push block 420 is disposed in the groove 110 and is fixedly connected to the first push rod 440, the first push block 420 includes a first push portion 421, and the first push block seat 430 and / or the first push block 420 also includes a third abutment portion.

[0031] Among them, Figures 1 to 3 As shown, the first push rod 440 is a split structure, which is more conducive to the first push rod 440 passing through the first guide hole 111, the third guide hole 310 and the first stepped hole 210, and the first push rod 440 is assembled with the first push block seat 430.

[0032] In some examples, such as Figures 1 to 3 As shown, the second ejection assembly 700 includes a second push block 710 and a second push rod. The second push block 710 is located in the groove 110 and is located on one side of the first ejection assembly 400. The second push block 710 includes a second push portion 711. The upper end of the second push rod is passed through the second guide hole 112 and is fixedly connected to the second push block 710. The lower end of the second push rod is disposed on the mounting portion 320.

[0033] It can be, for example Figure 3 As shown, the first push block seat 430 further includes a third abutting portion 434, and the third abutting portion 434 abuts upward against the hole wall of the third guide hole 310; or it can be, as shown in Figure 2 As shown, the first push block 420 further includes a third abutting portion 422, and the third abutting portion 422 abuts upward against the second push block 710; or it may be, as shown in Figure 1 As shown, the first push block seat 430 and the first push block 420 also include a third abutment portion, and the third abutment portion 434 of the first push block seat 430 abuts upward against the hole wall of the third guide hole 310, and at the same time, the third abutment portion 422 of the first push block 420 abuts upward against the second push block 710, etc.; the above can all achieve the purpose of the present application, and its purpose does not deviate from the design concept of the present utility model, and will not be repeated here, and should all fall within the protection scope of the present application.

[0034] Furthermore, if Figure 1 and Figure 3As shown, the needle plate 300 includes an ejector panel 330 and an ejector bottom plate 340, the ejector panel 330 is located above the ejector bottom plate 340, the mounting portion 320 is located at the ejector panel 330, and the third guide hole 310 is located at the ejector panel 330 and the ejector bottom plate 340. This solution has a simple structure and is easy to implement.

[0035] Furthermore, if Figure 3 As shown, the mounting portion 320 is a third stepped hole, and the third stepped hole has a third stepped surface 321 facing downward. The second push rod includes a second push rod body 720 and a second push block seat 730. The second push block seat 730 is arranged in the third stepped hole and has a fifth abutting portion 731. The fifth abutting portion 731 abuts upward against the third stepped surface 321. The lower end of the second push block seat 730 abuts downward against the top surface of the ejector base plate 340. The upper end of the second push rod body 720 is penetrated through the second guide hole 112 and is fixedly connected to the second push block 710. The lower end of the second push rod body 720 is connected to the second push block seat 730. This solution has a simple structure and is easy to disassemble and assemble.

[0036] Furthermore, if Figure 2 As shown, the injection rib groove 410 is located on the side of the first push block 420 facing away from the second push block 710, and the first interval is set to be no less than 2mm. It can be that the first interval is set to 2mm; or it can be that the first interval is set to 7mm; or it can be that the first interval is set to 12mm, etc.; all of the above can achieve the purpose of this application, and its purpose does not deviate from the design concept of this utility model, and will not be repeated here, and all should belong to the protection scope of this application.

[0037] In some examples, such as Figure 3 As shown, the elastic member 500 is configured as a coil spring. This solution has a simple structure and is easy to implement.

[0038] In some examples, such as Figure 3 As shown, the mold ejection structure also includes: a stopper block 600, which is fixed in the first stepped hole 210 and below the first stepped surface 211, and includes a stopper portion. This solution has a simple structure and is easy to implement. Moreover, the top surface of the stopper block 600 is provided with an escape groove 610 with an opening facing upward, and the escape groove 610 corresponds to the lower end position of the first push rod 440.

[0039] In some examples, such as Figure 2 As shown, the inner mold 100 includes a main body 120 and an inner mold insert 130. The inner mold insert 130 is located on one side of the main body 120 and forms a groove 110 together with the main body 120. The first ejector assembly 400 is located between the main body 120 and the second ejector assembly 700. The side of the main body 120 facing the inner mold insert 130 forms an injection rib groove 410 together with the first push block 420.

[0040] Ejection process: the injection molding machine pushes the needle plate 300 to move upward, and the needle plate 300 drives the second ejection assembly 700 to move upward together. The first ejection assembly 400 moves upward together with the needle plate 300 under the push of the coil spring, so that the third abutment portion 434 of the first push block seat 430 remains in upward abutment against the hole wall of the third guide hole 310 (and / or the third abutment portion 422 of the first push block 420 remains in upward abutment against the second push block 710), so that the second push block 710 pushes the flange 910 of the transparent plastic panel 900 upward, and the first push block 420 pushes the transparent plastic panel 900 upward near the rib plate 920, so that the rib plate 920 can easily be aligned with the injection molding rib plate 920. The groove 410 is loosened; when the second abutment portion 431 of the first push block seat 430 abuts upward against the first step surface 211, the first ejection assembly 400 stops moving upward, and the needle plate 300 continues to drive the second ejection assembly 700 to move upward, and the hole wall of the third guide hole 310 disengages from the third abutment portion 434 of the first push block seat 430 and continues to move upward (and / or the second push block 710 disengages from the third abutment portion 422 of the first push block 420 and continues to move upward), and finally the second push block 710 completely ejects the transparent plastic panel 900 from the inner mold 100. In this solution, the position where the rib plate 920 is set on the transparent plastic panel will not have the problem of breakage and whitening.

[0041] Reset process: The injection molding machine pushes the needle plate 300 to move downward, and the needle plate 300 drives the second ejection assembly 700 to move downward together. When the hole wall of the third guide hole 310 abuts downward against the third abutting portion 434 of the first push block seat 430 (and / or the second push block 710 abuts downward against the third abutting portion 422 of the first push block 420), as the needle plate 300 drives the second ejection assembly 700 to continue to move downward, the hole wall of the third guide hole 310 pushes the third abutting portion 434 of the first push block seat 430. The abutment 434 moves downward, causing the fourth abutment 441 to compress the coil spring downward (and / or the second push block 710 pushes the first push block 420 to move downward, causing the fourth abutment 441 to compress the coil spring downward), and the second abutment 431 of the first push block seat 430 disengages from the first step surface 211 and moves downward until the needle plate 300 moves downward to the initial position. At this time, the distance between the second abutment 431 of the first push block seat 430 and the first step surface 211 is the first interval.

[0042] The mold provided by the embodiment of the utility model is as follows Figure 4 As shown, it includes the mold ejection structure described in any of the above embodiments.

[0043] This mold has all the advantages of the mold ejection structure provided by any of the above embodiments, which will not be described in detail here.

[0044] In some examples, such as Figure 4As shown, the mold also includes a square iron 810, a B plate 820, an A plate 830, a hot runner heat plate 840 and a panel 850. The square iron 810 is arranged between the bottom plate 200 and the B plate 820, the needle plate 300 is located on the inner side of the square plate, the A plate 830 is located above the B plate 820 and together with the B plate 820 forms an injection cavity 860, the inner mold 100 is located in the injection cavity 860, the hot runner heat plate 840 is located above the A plate 830, and the panel 850 is located above the hot runner heat plate 840.

[0045] In summary, the technical solution proposed in the embodiment of the utility model is the ejection process: the injection molding machine pushes the needle plate to move upward, the needle plate drives the second ejection assembly to move upward together, and the first ejection assembly moves upward together with the needle plate under the push of the elastic member, so that the third abutting portion remains upwardly abutted against the hole wall of the third guide hole and at least one of the second ejection assemblies, so that the second pushing portion pushes the flange of the transparent plastic panel upward, and the first pushing portion pushes the position of the transparent plastic panel adjacent to the rib plate upward, and the rib plate is easily loosened from the injection molding rib groove; when the second abutting portion abuts upward against the first step surface, the first ejection assembly stops moving upward, and the needle plate continues to drive the second ejection assembly to move upward, the hole wall of the third guide hole and at least one of the second ejection assemblies are separated from the third abutting portion and continue to move upward, and finally the second pushing portion completely ejects the transparent plastic panel from the inner mold. In this solution, the position where the rib plate is set on the transparent plastic panel will not have the problem of breakage and whitening.

[0046] Reset process: the injection molding machine pushes the needle plate to move downward, and the needle plate drives the second ejector assembly to move downward together. When the hole wall of the third guide hole and at least one of the second ejector assemblies abut downward against the third abutting portion, as the needle plate drives the second ejector assembly to continue to move downward, the hole wall of the third guide hole and at least one of the second ejector assemblies push the first ejector assembly to move downward, causing the first ejector assembly to compress the elastic part, and the second abutting portion separates from the first step surface and moves downward until the needle plate moves downward to the initial position, at which time the distance between the second abutting portion and the first step surface is the first interval.

[0047] In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery", "mouth-shaped structure" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the structure referred to has a specific position, is constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention.

[0048] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0049] Although the implementation methods disclosed in the utility model are as above, the above contents are only implementation methods adopted to facilitate the understanding of the utility model, and are not used to limit the utility model. Any technician in the field to which the utility model belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the utility model, but the scope of patent protection of the utility model shall still be defined by the attached claims.

Claims

1. A mold ejection structure, characterized in that: include: The inner mold is provided with a groove with an upward opening, and the bottom wall of the groove has a first guide hole and a second guide hole; A bottom plate, located below the inner mold, the bottom plate having a first stepped hole, the first stepped hole having a first stepped surface facing downward; A needle plate is located between the inner mold and the bottom plate, the needle plate has a third guide hole and a mounting portion, the first guide hole, the third guide hole and the first stepped hole are located correspondingly, and the second guide hole and the mounting portion are located correspondingly; A first ejector assembly is inserted into the first guide hole, the third guide hole and the first stepped hole. The upper end of the first ejector assembly has a first pushing portion, the first pushing portion is located in the groove, the first pushing portion and the groove wall of the groove are combined to form an injection rib groove with an opening facing upward. The lower end of the first ejector assembly has a second abutment portion, the second abutment portion is located in the first stepped hole and below the first stepped surface, a first interval is formed between the second abutment portion and the first stepped surface, the first stepped surface is configured to block the second abutment portion downward, and the first ejector assembly also has a third abutment portion; An elastic member, a stopper is provided at the lower part of the first stepped hole, the stopper is located below the first stepped surface, the elastic member is located above the stopper and is pressed between the first ejection assembly and the stopper; and The second ejection component is inserted into the second guide hole, the lower end of the second ejection component is arranged on the mounting portion, the upper end of the second ejection component is located in the groove and has a second pushing portion, the second pushing portion is located on one side of the first pushing portion, and the third abutting portion abuts upward against the hole wall of the third guide hole and at least one of the second ejection component.

2. The mold ejection structure according to claim 1, characterized in that: The first ejection assembly includes a first push block, a first push rod and a first push block seat, the first push rod is inserted into the first guide hole, the third guide hole and the first step hole, the first push block seat has a second step hole, the second step hole has a second step surface facing downward, the first push block seat is located between the needle plate and the stop portion, and is sleeved on the first push rod, the first push block seat has the second abutment portion, the lower end of the first push rod has a fourth abutment portion facing upward and abutting against the second step surface, the elastic member is pressed between the fourth abutment portion and the stop portion, and is sleeved on the first push rod, the first push block is arranged in the groove and fixedly connected to the first push rod, the first push block includes the first push portion, and the first push block seat and / or the first push block also include the third abutment portion.

3. The mold ejection structure according to claim 2, characterized in that: The first push rod is a split structure.

4. The mold ejection structure according to claim 1, characterized in that: The second ejection assembly includes a second push block and a second push rod, the second push block is located in the groove and on one side of the first ejection assembly, and the second push block includes the second push portion, the upper end of the second push rod is passed through the second guide hole and fixedly connected to the second push block, and the lower end of the second push rod is arranged on the mounting portion.

5. The mold ejection structure according to claim 4, characterized in that: The needle plate includes an ejector panel and an ejector bottom plate, the ejector panel is located above the ejector bottom plate, the mounting portion is located on the ejector panel, and the third guide hole is located on the ejector panel and the ejector bottom plate.

6. The mold ejection structure according to claim 5, characterized in that: The mounting portion is a third stepped hole, and the third stepped hole has a third stepped surface facing downward. The second push rod includes a second push rod body and a second push block seat. The second push block seat is arranged in the third stepped hole and has a fifth abutting portion. The fifth abutting portion abuts upward against the third stepped surface. The lower end of the second push block seat abuts downward against the top surface of the ejector base plate. The upper end of the second push rod body is penetrated through the second guide hole, and the lower end of the second push rod body is connected to the second push block seat.

7. The mold ejection structure according to claim 1, characterized in that: The elastic member is a coil spring.

8. The mold ejection structure according to claim 1, characterized in that: Also includes: The stop block is fixedly arranged in the first stepped hole and is located below the first stepped surface. The stop block includes the stop portion.

9. The mold ejection structure according to claim 1, characterized in that: The inner mold includes a main body and an inner mold insert, wherein the inner mold insert is located on one side of the main body and encloses the groove with the main body, the first ejection component is located between the main body and the second ejection component, and the injection rib groove is located on a side of the first pushing portion that is away from the second ejection component.

10. A mold, characterized in that: The method comprises the mold ejection structure as claimed in any one of claims 1 to 9.

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