Deep cavity injection mold

Abstract

The present application discloses a deep cavity injection mold, which includes a mold assembly, a first demoulding mechanism, a second demoulding mechanism and a driving mechanism. The first demoulding mechanism includes a first ejector, a second ejector and a guide member, the first ejector is connected and matched with the second ejector, and the second ejector has a molding part; the second demoulding mechanism includes a push plate; the driving mechanism drives the first ejector to drive the second ejector to move away from the lower mold, and the guide member guides the second ejector to move inward. By arranging the first ejector and the second ejector in the deep cavity injection mold, the first ejector abuts against the top of the inner wall of the plastic part, and the first ejector drives the molding part to separate from the plastic part. Compared with the prior art, the second ejector can move close to the first ejector, so that the molding part can be separated from the plastic part, so that the plastic part can be ejected by the first ejector and the push plate together, and then the demoulding of the plastic part with a deep cavity and a small space and an undercut structure can be realized.

Description

Technical Field

[0001] The present application relates to the field of injection molds, and in particular to a deep cavity injection mold. Background Art

[0002] In the related art, according to the different usage requirements of plastic parts, the side walls of some plastic parts are provided with undercut structures. When the plastic parts are provided with undercut structures, the corresponding injection mold of the plastic parts needs to be provided with a sloping top. The sloping top can form the undercut structure of the plastic parts. When the plastic parts are ejected from the injection mold, the sloping top moves away from the plastic parts to separate the sloping top and the injection molded plastic parts.

[0003] When producing plastic parts with an undercut structure, a large height dimension and a small internal space, when the plastic part is ejected from the injection mold, the movement of the lifter away from the plastic part will interfere with the side wall of the injection molded part, resulting in the lifter being unable to separate from the plastic part, thereby causing the plastic part to be unable to be ejected from the injection mold. Summary of the invention

[0004] In order to enable a plastic part with a large height dimension, a small internal space and an undercut structure to be demolded, the present application provides a deep cavity injection mold.

[0005] The deep cavity injection mold provided in this application adopts the following technical solution:

[0006] A deep cavity injection mold comprises: a mold assembly, wherein the mold assembly comprises an upper mold and a lower mold, wherein the upper mold is arranged relative to the lower mold, and the upper mold is suitable for moving closer to or away from the lower mold, wherein the upper mold defines an upper mold cavity and has a feed port and a feed channel, and the feed channel is connected between the feed port and the upper mold cavity.

[0007] A first demolding mechanism, wherein the first demolding mechanism is installed on the lower mold, and the first demolding mechanism is suitable for extending into the upper mold cavity to be spaced from the inner wall of the upper mold cavity to form an injection gap, the first demolding mechanism comprises a first ejector, a second ejector and a guide member, the first ejector has a first molding wall, the second ejector has a second molding wall, the guide member has a third molding wall, the first ejector is connected and matched with the second ejector, the second ejector is guided and matched with the guide member, the second ejector has a molding portion, and the molding portion is protruding or recessed in the second molding wall along the radial direction of the first demolding mechanism.

[0008] A second demoulding mechanism is installed on the lower mold, and the second demoulding mechanism includes a push plate, and the push plate is used to eject the plastic part molded in the injection gap from the first ejector.

[0009] A driving mechanism is connected and cooperated with the first demoulding mechanism and the second demoulding mechanism. When the driving mechanism drives the first ejector to move away from the lower mold, the first ejector drives the second ejector to move away from the lower mold, and the guide member guides the second ejector to move inwardly relative to the first ejector along the radial direction of the first demoulding mechanism, and the driving mechanism drives the push plate to move away from the lower mold.

[0010] When the driving mechanism drives the first ejector to move close to the lower mold, the first ejector drives the second ejector to move close to the lower mold, and the guide member guides the second ejector to move outward relative to the first ejector along the radial direction of the first demolding mechanism, and the driving mechanism drives the push plate to move close to the lower mold, so that the first molding wall, the second molding wall and the third molding wall are arranged flush with each other.

[0011] By adopting the above technical scheme, by arranging the first ejector and the second ejector in the deep cavity injection mold, the first ejector abuts against the top of the inner wall of the plastic part, the first ejector and the second ejector are connected and matched, and the first ejector drives the molding part to separate from the plastic part. Compared with the prior art, the second ejector does not contact the top of the inner wall of the plastic part, and the second ejector has enough space to move close to the first ejector, so that the molding part can be separated from the plastic part, so that the plastic part can be ejected from the lower mold by the first ejector and the push plate, and then the demolding of the plastic part with a deep cavity, small space and undercut structure can be realized.

[0012] Preferably, the driving mechanism includes a first ejector plate assembly, the driving mechanism includes a first ejector plate assembly, the first ejector plate assembly is located on a side of the lower mold away from the upper mold, the first ejector plate assembly includes a first ejector plate and a second ejector plate, the first ejector plate and the second ejector plate are detachably connected, the first ejector plate is located on a side of the second ejector plate away from the lower mold, the second ejector plate is provided with a first avoidance hole, a first connecting rod is connected between the first ejector plate and the first ejector member, the first connecting rod passes through the first avoidance hole and cooperates with the guide member for guidance.

[0013] By adopting the above technical solution, the guide member can guide the first connecting rod, thereby preventing the first ejection part from deviating from the preset motion trajectory, thereby improving the working reliability of the deep cavity injection mold.

[0014] Preferably, the second ejector member includes a second ejector portion and a second connecting rod, the second ejector portion has the second molding wall, the second ejector portion is connected to one end of the second connecting rod, and the second connecting rod is guided and matched with the guide member.

[0015] By adopting the above technical solution, the guide member can guide the second connecting rod, thereby preventing the second ejection part from deviating from the preset motion trajectory, thereby further improving the working reliability of the deep cavity injection mold.

[0016] Preferably, a side wall of the guide member away from the first ejector member is provided with a placement groove, and the placement groove is used to place the second ejector part. When the side of the second ejector part close to the lower mold stops against the side of the placement groove away from the lower mold, the second molding wall is flush with the third molding wall.

[0017] By adopting the above technical solution, it is possible to avoid the second molding wall protruding or recessed in the third molding wall, resulting in the injection gap not matching the preset shape, thereby preventing the plastic part from being unable to be molded according to the preset shape, and further improving the working reliability of the deep cavity injection mold.

[0018] Preferably, an end wall of the first ejector member opposite to the second ejector portion is provided with a first guide structure, and an end wall of the second ejector portion opposite to the first ejector member is provided with a second guide structure, and the first guide structure cooperates with the second guide structure so that when the first ejector member moves, it is suitable for driving the second ejector portion to move closer to or away from the lower mold, and the second ejector member is suitable for moving relative to the first ejector member along the radial direction of the first ejector member.

[0019] By adopting the above technical solution, when the driving mechanism drives the first ejector to move close to the lower mold through the first connecting rod, the first ejector drives the second ejector to move close to the lower mold through the first guide structure, and moves outward relative to the first connecting rod. That is to say, when the second ejector moves close to the lower mold, the second ejector moves away from the first connecting rod at the same time. Such an arrangement eliminates the need to add an external power source to drive the second ejector to move, thereby reducing the manufacturing cost of the deep cavity injection mold.

[0020] Preferably, the driving mechanism includes a first ejector plate assembly, the driving mechanism includes a first ejector plate assembly, the first ejector plate assembly is located on a side of the lower mold away from the upper mold, the first ejector plate assembly includes a first ejector plate, a second ejector plate and a first driving member, the first ejector plate and the second ejector plate are detachably connected, the first ejector plate is located on a side of the second ejector plate away from the lower mold, a driving part is provided at one end of the second connecting rod away from the second ejection part, one end of the first driving member is connected and cooperated with the second ejector plate, the other end of the first driving member is provided with a driving groove, the driving part is guided and cooperated with the driving groove, and the second ejector plate is used to drive the first driving member to drive the second ejector member to move away from or close to the lower mold.

[0021] By adopting the above technical solution, the first top plate assembly can simultaneously drive the first demolding mechanism to move closer to or away from the lower mold through the first connecting rod and the first driving member. Compared with the first top plate assembly driving the first demolding mechanism to move closer to or away from the lower mold through the first connecting rod, such a configuration can reduce the difficulty of the first top plate assembly driving the first demolding mechanism to move closer to or away from the lower mold.

[0022] Preferably, the driving mechanism further includes: a second top plate assembly, the second top plate assembly is arranged on a side of the first top plate assembly close to the lower mold, and the second top plate assembly is used to drive the push plate to move closer to or away from the lower mold.

[0023] A locking assembly and a reset assembly, wherein the locking assembly is mounted on the side wall of the first top plate assembly, and the locking assembly is suitable for locking between the second top plate assembly and the first top plate assembly, and the reset assembly is mounted in the first top plate assembly, and the reset assembly is used to release the second top plate assembly from the first top plate assembly.

[0024] A power source is transmission-connected with the second top plate assembly. When the power source drives the second top plate assembly to move close to the lower mold, the locking assembly enables the second top plate assembly to drive the first top plate assembly to move close to the lower mold, and when the first top plate assembly moves to a first preset position, the locking assembly unlocks the first top plate assembly and the second top plate assembly.

[0025] When the power source drives the second top plate assembly to move away from the lower mold, the reset assembly enables the second top plate assembly to drive the first top plate assembly to move away from the lower mold, and when the first top plate assembly moves to the second preset position, the locking assembly locks the first top plate assembly and the second top plate assembly, wherein when the first top plate assembly is located at the first preset position, the spacing distance between the first molding wall and the second molding wall along the radial direction of the first demolding mechanism is the largest, and when the first top plate assembly is located at the second preset position, the first molding wall is flush with the second molding wall.

[0026] By adopting the above technical solution and setting a reset component in the driving mechanism, the first top plate component can be prevented from moving away from the lower mold in advance, and then the first top plate component drives the first ejector member and the second ejector member to move closer to the lower mold, which can prevent the molding part from resetting to the initial position in advance, and when the molding part is reset to the initial position in advance, the molding part is located on the side of the push plate close to the lower mold, thereby preventing the push plate from interfering with the molding part when the push plate moves close to the lower mold, causing damage to the molding part. Such an arrangement can improve the working reliability of the deep cavity injection mold.

[0027] Preferably, the driving mechanism also includes a bottom plate, the first top plate assembly is located on a side of the bottom plate close to the lower mold, the locking assembly includes a first spring and a locking piece, a side wall of the first top plate assembly away from the first demolding mechanism is provided with a first accommodating groove, the first accommodating groove defines an accommodating space, the locking piece and the first spring are both provided in the first accommodating groove, one end of the first spring is connected and cooperated with the first ejection plate, and the other end is connected and cooperated with the locking piece, the locking piece is suitable for extending out of or into the first accommodating groove, the second top plate assembly is provided with a second driving piece close to the side wall of the first accommodating groove, the bottom plate is provided with an unlocking piece close to the side wall of the first accommodating groove, and the locking piece is suitable for locking with the second driving piece.

[0028] The second top plate assembly drives the first top plate assembly to move closer to the lower mold through the second driving member. When the first top plate assembly moves to the first preset position, the second driving member abuts against the unlocking member, and the unlocking member drives the locking member to extend into the first accommodating groove, so that the second driving member is unlocked from the locking member.

[0029] By adopting the above technical solution, the second driving member is locked with the locking member, and the unlocking member drives the locking member to extend into the first receiving groove, so that the second top plate assembly drives the first top plate assembly to move to the first preset position.

[0030] Preferably, the second ejector plate is provided with a second accommodating groove, the second accommodating groove defines a moving channel, the driving mechanism also includes a bottom plate, the reset assembly includes a second spring and a first limit member, the bottom plate is provided with a second limit member, the second ejector plate assembly is provided with a third driving member, the second limit member and the third driving member are both communicated with the second accommodating groove, the first limit member and the second spring are both provided in the second accommodating groove, one end of the second spring is connected and cooperated with the second ejector plate, and the other end is connected and cooperated with the first limit member, and the first limit member is suitable for moving along the moving channel close to or away from the second limit member.

[0031] When the first top plate assembly moves to the first preset position, the first limit member is opposite to the second limit member, and the side of the first limit member close to the bottom plate is stopped at the side of the second limit member away from the bottom plate; when the second top plate assembly moves away from the lower mold, the third driving member drives the first limit member to move away from the second limit member, so that the second top plate assembly drives the first top plate assembly to move away from the lower mold.

[0032] By adopting the above technical solution, the first limit member and the second limit member can be used to stop the first top plate assembly from moving away from the lower mold before the second top plate assembly, and the third driving member can be used to drive the first limit member to move away from the second limit member, thereby achieving the technical effect that the second top plate assembly can drive the first top plate assembly to move away from the lower mold.

[0033] Preferably, there are a plurality of the second ejector members, and the plurality of the second ejector members are sequentially spaced apart and arranged along the circumferential direction of the deep cavity injection mold.

[0034] By adopting the above technical solution, designers can set one or more second ejectors in the deep cavity injection mold according to the structural requirements of different plastic parts, thereby improving the usability of the deep cavity injection mold.

[0035] In summary, the present application includes at least one of the following beneficial technical effects:

[0036] 1. By arranging a first ejector and a second ejector in a deep cavity injection mold, the first ejector abuts against the top of the inner wall of the plastic part, the first ejector and the second ejector are connected and matched, and the first ejector drives the molding part to separate from the plastic part. Compared with the prior art, the second ejector does not contact the top of the inner wall of the plastic part, and the second ejector has enough space to move close to the first ejector, so that the molding part can be separated from the plastic part, so that the plastic part can be ejected from the lower mold by the first ejector and the push plate, and then the plastic part with a deep cavity, small space and an undercut structure can be demoulded;

[0037] 2. The guide member can guide the second connecting rod, thereby preventing the second ejector from deviating from the preset motion trajectory, thereby further improving the working reliability of the deep cavity injection mold;

[0038] 3. Designers can set one or more second ejectors in the deep cavity injection mold according to the structural requirements of different plastic parts, thereby improving the usability of the deep cavity injection mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic diagram of a deep cavity injection mold according to an embodiment of the present application;

[0040] Figure 2 is a cross-sectional view of a deep cavity injection mold according to an embodiment of the present application;

[0041] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0042] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle;

[0043] Figure 5 yes Figure 2 A partial enlarged view of point C in the middle;

[0044] Figure 6 is a cross-sectional view of a partial structure of a deep cavity injection mold according to an embodiment of the present application;

[0045] Figure 7 is a cross-sectional view of another part of the structure of the deep cavity injection mold according to an embodiment of the present application;

[0046] Figure 8 is a schematic diagram of the substructure of a deep cavity injection mold according to an embodiment of the present application;

[0047] Fig. 9 is a schematic diagram of a second ejector according to an embodiment of the present application;

[0048] Fig.10 It is a schematic diagram of the guide member according to the embodiment of the present application.

[0049] Description of reference numerals:

[0050] 100. Deep cavity injection mold;

[0051] 10. Mold assembly; 101. upper mold; 1011. upper mold cavity; 1012. feed port; 1013. feed channel; 102. lower mold; 103. injection gap;

[0052] 20, first demoulding mechanism; 201, first ejector; 2011, first molding wall; 2012, first guide structure; 202, second ejector; 2021, second molding wall; 2022, molding part; 2023, second ejector; 2024, second connecting rod; 2025, second guide structure; 2026, driving part; 203, guide; 2031, third molding wall; 2032, placement groove;

[0053] 30. Second demoulding mechanism; 301. Push plate; 302. Ejector pin;

[0054] 40. Driving mechanism; 401. First top plate assembly; 4011. First ejector plate; 4012. Second ejector plate; 4013. First avoidance hole; 4014. First connecting rod; 4015. First driving member; 4016. Driving groove; 4017. First receiving groove; 4018. Accommodating space; 4019. Second receiving groove; 4020. Moving channel; 403. Second top plate assembly; 4031. Second driving member; 4032. Third driving member ; 4033, third ejection plate; 4034, fourth ejection plate; 4035, locking groove; 4036, second guide portion; 404, locking assembly; 4041, first spring; 4042, locking member; 405, reset assembly; 4051, second spring; 4052, first limiting member; 4053, guide hole; 4054, first guide portion; 406, bottom plate; 4061, unlocking member; 4062, second limiting member; 4063, unlocking portion. DETAILED DESCRIPTION

[0055] The following is combined with Figure 1-Figure 10 This application is described in further detail.

[0056] The embodiment of the present application discloses a deep cavity injection mold 100, which is used to produce plastic parts with deep cavities, small spaces and undercut structures. It should be noted that the deep cavity refers to the high height dimension of the plastic part, and the small space refers to the small distance between the two opposite inner walls of the plastic part. In order to enable the plastic part to be separated from the mold, the distance between the two opposite inner walls at the top of the plastic part is smaller than the distance between the two opposite inner walls at the bottom of the plastic part.

[0057] Reference Figure 1-Figure 3 According to the embodiment of the present application, the deep cavity injection mold 100 includes: a mold assembly 10, a first demolding mechanism 20, a second demolding mechanism 30 and a driving mechanism 40. The mold assembly 10 includes an upper mold 101 and a lower mold 102. The upper mold 101 is arranged opposite to the lower mold 102, and the upper mold 101 is suitable for moving close to or away from the lower mold 102. The upper mold 101 defines an upper mold cavity 1011 and has a feed port 1012 and a feed channel 1013. The feed channel 1013 is connected to the upper mold cavity 1011. The first demolding mechanism 20 is installed on the lower mold 102, and the first demolding mechanism 20 is suitable for extending into the upper mold cavity 1011 to be spaced from the inner wall of the upper mold cavity 1011 to form an injection gap 103. The molten plastic particles enter the feed flow through the feed port 1012 and flow into the injection gap 103 along the feed channel 1013. The molten plastic particles are cooled and shaped in the injection gap 103 to form a plastic part.

[0058] Further, refer to Fig. 9 and Fig.10The first demoulding mechanism 20 includes a first ejector 201, a second ejector 202 and a guide member 203. The first ejector 201 is connected to the second ejector 202. The top wall of the second ejector 202 is abutted against the bottom wall of the first ejector 201. In some specific embodiments, the first ejector 201 can be a straight ejector and the second ejector 202 can be an inclined ejector. The first ejector 201 has a first molding wall 2011, the second ejector 202 has a second molding wall 2021, and the guide member 203 has a third molding wall 2031. The first molding wall 2011 is the peripheral wall connecting the first ejector 201 and the injection gap 103, the second molding wall 2021 is the peripheral wall connecting the second ejector 202 and the injection gap 103, and the third molding wall 2031 is the peripheral wall connecting the guide member 203 and the injection gap 103. The first molding wall 2011, the second molding wall 2021 and the third molding wall 2031 are flush with each other, and the first molding wall 2011, the second molding wall 2021 and the third molding wall 2031 are all connected to the injection gap 103.

[0059] In addition, the guide member 203 is installed on the lower mold 102, and the second ejector 202 is guided and matched with the guide member 203. Specifically, the guide member 203 is provided with a first guide groove, and the first guide groove penetrates the guide member 203. The second ejector 202 is guided and matched with the first guide groove. When the second ejector 202 is driven, the first guide groove can guide the second ejector 202, so that the second ejector 202 can move according to a preset motion trajectory.

[0060] And, refer to Fig. 9 The second ejector 202 has a molding portion 2022, and the molding portion 2022 protrudes or is recessed in the second molding wall 2021 along the radial direction of the first demolding mechanism 20. When the outer wall of the plastic part is provided with an undercut structure, the molding portion 2022 needs to extend into the injection gap 103, that is, the molding portion 2022 protrudes from the outer peripheral wall of the second ejector 202 in communication with the injection gap 103. When the inner wall of the plastic part is provided with an undercut structure, the molding portion 2022 needs to be away from the injection gap 103, that is, the molding portion 2022 is recessed in the outer peripheral wall of the second ejector 202 in communication with the injection gap 103. Such a setting can prevent molten plastic particles from flowing into the position of the injection gap 103 corresponding to the undercut structure, thereby preventing the position of the injection gap 103 corresponding to the undercut structure from being filled with molten plastic particles, and preventing the undercut structure of the plastic part from failing to be molded.

[0061] Furthermore, in some specific embodiments, the plastic part has a plurality of undercut structures, the second ejector 202 has a plurality of molding parts 2022, the plurality of molding parts 2022 correspond one-to-one to the plurality of undercut structures, any two adjacent undercut structures are spaced apart, and any two adjacent molding parts 2022 are spaced apart.

[0062] Furthermore, the guide member 203 is installed on the lower mold 102 through the top wall of the second ejector 202 abutting against the bottom wall of the first ejector 201. When producing a plastic part with a deep cavity, a small space and an undercut structure, the top wall of the first ejector 201 abuts against the top of the inner wall of the plastic part, and the second ejector 202 abuts against the bottom of the inner wall of the plastic part. Such an arrangement can avoid the second ejector 202 from directly abutting against the top of the inner wall of the plastic part, thereby avoiding the second ejector 202 from being unable to move to the center position of the injection molded part due to the small internal space of the plastic part, thereby achieving the technical effect of separating the molding portion 2022 from the injection molded part.

[0063] The second demoulding mechanism 30 is installed on the lower mold 102, and the second demoulding mechanism 30 includes a push plate 301, and the push plate 301 is used to eject the injection molded part formed in the injection gap 103 from the first ejector 201. The push plate 301 is provided with a second avoidance hole, and the first demoulding mechanism 20 extends into the upper mold cavity 1011 through the second avoidance hole. Specifically, the first ejector 201, the second ejector 202 and the guide member 203 extend into the upper mold cavity 1011 through the second avoidance hole. The upper end wall of the push plate 301 is connected to the injection gap 103, and the upper end wall of the push plate 301 is used to close the injection gap 103. It should be noted that the upper end wall of the push plate 301, the upper mold cavity 1011 and the first demolding mechanism 20 together form a closed injection gap 103. When molten plastic particles enter the injection gap 103, the push plate 301 can prevent the molten plastic particles from flowing out of the injection gap 103, so that the molten plastic particles can be cooled and solidified in the injection gap 103 to form a plastic part.

[0064] The driving mechanism 40 is connected and cooperated with both the first demolding mechanism 20 and the second demolding mechanism 30. Specifically, the driving mechanism 40 is connected and cooperated with both the first ejector 201 and the push plate 301. When the driving mechanism 40 drives the first ejector 201 to move away from the lower mold 102, the first ejector 201 drives the second ejector 202 to move away from the lower mold 102, and the guide member 203 guides the second ejector 202 to move inward relative to the first ejector 201 along the radial direction of the first demolding mechanism 20. After the injection molded part is formed in the injection gap 103, the inner wall of the injection molded part stops against the first demolding mechanism 20. When the driving mechanism 40 drives the first ejector 201 to move away from the lower mold 102, the first ejector 201 drives the injection molded part to move away from the lower mold 102, so that the inner wall of the injection molded part can be separated from the guide member 203.

[0065] Furthermore, along the height direction of the deep cavity injection mold 100, the height direction of the deep cavity injection mold 100 may refer to Figure 2 In the up-down direction of the mold, the first guide groove has an inclination, and one end of the first guide groove close to the upper mold 101 is closer to the first ejector 201 than the other end of the first guide groove. That is to say, the first guide groove extends obliquely upward close to the first ejector 201, and when the second ejector 202 moves away from the lower mold 102, the second ejector 202 moves along the first guide groove close to the first ejector 201 at the same time, so that the molding portion 2022 can be separated from the injection molded part, thereby preventing the injection molded part from interfering with the molding portion 2022 when the injection molded part is ejected from the lower mold 102, resulting in the injection molded part being unable to be ejected.

[0066] In addition, the driving mechanism 40 drives the push plate 301 to move away from the lower mold 102. After the injection molded part is formed in the injection gap 103, the bottom wall of the injection molded part stops at the push plate 301. The push plate 301 and the first ejector 201 move together in a direction away from the lower mold 102. The push plate 301 and the first ejector 201 simultaneously drive the injection molded part to move away from the lower mold 102, which can reduce the difficulty of separating the inner wall of the injection molded part from the guide member 203. When the molding portion 2022 is separated from the plastic part, the second molding wall 2021 is recessed into the first molding wall 2011 along the radial direction of the first demolding mechanism 20, and the distance between the first molding wall 2011 and the second molding wall 2021 is the largest, the first ejector 201 stops moving, and the driving mechanism 40 drives the push plate 301 to move close to the upper mold 101, and the push plate 301 drives the injection molded part to move close to the upper mold 101, so that the inner wall of the injection molded part is separated from the first ejector 201, thereby achieving the technical effect of ejecting the injection molded part from the lower mold 102.

[0067] When the driving mechanism 40 drives the first ejector 201 to move close to the lower mold 102, the first ejector 201 drives the second ejector 202 to move close to the lower mold 102, and the guide member 203 guides the second ejector 202 to move outward relative to the first ejector 201 along the radial direction of the first demolding mechanism 20. Specifically, when the second ejector 202 moves close to the lower mold 102, the second ejector 202 moves away from the first ejector 201 along the first guide groove at the same time, so that the first molding wall 2011, the second molding wall 2021 and the third molding wall 2031 are arranged flush with each other.

[0068] Furthermore, before the first ejector 201 moves toward the lower mold 102, the driving mechanism 40 drives the push plate 301 to move toward the lower mold 102. When the push plate 301 moves to the end wall of the second molding wall 2021 away from the first ejector 201, the driving mechanism 40 drives the first ejector 201 to move toward the lower mold 102. This arrangement can avoid the second ejector 202 from resetting prematurely, and can prevent the push plate 301 from interfering with the molding portion 2022 and causing damage to the molding portion 2022.

[0069] Therefore, by arranging the first ejector 201 and the second ejector 202 in the deep cavity injection mold 100, the first ejector 201 stops against the top of the inner wall of the injection molded part, the first ejector 201 and the second ejector 202 are connected and matched, and the first ejector 201 drives the molding part 2022 to separate from the injection molded part. Compared with the prior art, the second ejector 202 does not contact the top of the inner wall of the injection molded part, and the second ejector 202 has enough space to move close to the first ejector 201, so that the molding part 2022 can be separated from the injection molded part, so that the injection molded part can be ejected from the lower mold 102 by the first ejector 201 and the push plate 301, and then the demolding of the plastic part with a deep cavity, small space and undercut structure can be realized.

[0070] Reference Figure 2 In some embodiments of the present application, the driving mechanism 40 includes a first ejector plate assembly 401, the first ejector plate assembly 401 is located on a side of the lower mold 102 away from the upper mold 101, the first ejector plate assembly 401 includes a first ejector plate 4011 and a second ejector plate 4012, the first ejector plate 4011 and the second ejector plate 4012 are detachably connected, the first ejector plate 4011 is located on a side of the second ejector plate 4012 away from the lower mold 102, and in the embodiment of the present invention, Figure 2 In the embodiment described, along the height direction of the deep cavity injection mold 100 , the first ejector plate 4011 is located below the second ejector plate 4012 .

[0071] In addition, the second ejector plate 4012 is provided with a first avoidance hole 4013, and the first avoidance hole 4013 penetrates the second ejector plate 4012. When the injection molded part is formed, the first ejection part abuts against the top of the inner wall of the injection molded part. A first connecting rod 4014 is connected between the first ejector plate 4011 and the first ejector member 201. The first ejector plate assembly 401 drives the first ejector member 201 to move away from the lower mold 102 through the first connecting rod 4014. The first ejector member 201 drives the injection molded part to move away from the lower mold 102 and separates from the guide member 203.

[0072] The first connecting rod 4014 passes through the first avoidance hole 4013 and cooperates with the guide member 203. Specifically, the guide member 203 is provided with a second guide groove, and the second guide groove runs through the guide member 203. The first connecting rod 4014 cooperates with the second guide groove. The guide member 203 is arranged in this way to guide the first connecting rod 4014, thereby preventing the first ejection part from deviating from the preset motion trajectory, thereby improving the working reliability of the deep cavity injection mold 100.

[0073] Furthermore, a first liquid flow channel is provided in the first ejection part, and a second liquid flow channel is provided in the first connecting rod 4014. The first liquid flow channel is connected to the second liquid flow channel. A liquid conveying device in the external environment can convey liquid to the first ejection part through the first liquid flow channel and the second liquid flow channel. In some specific embodiments, the liquid can be a coolant. Such a configuration can increase the cooling rate of the molten plastic particles, thereby improving the production efficiency of the injection molded parts.

[0074] Furthermore, the first liquid flow channel in the first ejection part can be set to be spiral, so that the flow time of the liquid in the first liquid flow channel can be increased, thereby increasing the heat exchange time between the liquid and the molten plastic particles, and further increasing the cooling rate of the molten plastic particles. It should be noted that when the first liquid flow channel is spiral, it is difficult to process the first liquid flow channel in the first ejection part with existing traditional processing technology. At this time, the first ejection part can be manufactured using 3D printing technology, so that the spiral first liquid flow channel can be processed in the first ejection part.

[0075] Reference Figure 2 , Figure 3 and Fig. 9 In some embodiments of the present application, the second ejector 202 includes a second ejector portion 2023 and a second connecting rod 2024, the second ejector portion 2023 has a second molding wall 2021, it should be noted that the outer peripheral wall of the second ejector portion 2023 communicating with the injection gap 103 is the second molding wall 2021, the second ejector portion 2023 is connected to one end of the second connecting rod 2024, the second connecting rod 2024 is guided and matched with the guide member 203, specifically, the second connecting rod 2024 is guided and matched with the first guide groove, so that the guide member 203 can guide the second connecting rod 2024, thereby preventing the second ejector portion 2023 from deviating from the preset motion trajectory, and further improving the working reliability of the deep cavity injection mold 100.

[0076] Reference Figure 2 , Figure 3 and Fig.10In some embodiments of the present application, a placement groove 2032 is provided on the side wall of the guide member 203 away from the first ejector 201, and the placement groove 2032 is connected to the first guide groove. The placement groove 2032 is used to place the second ejector 2023, and the second connecting rod 2024 passes through the placement groove 2032 and cooperates with the first guide groove for guidance. When the side of the second ejector 2023 close to the lower mold 102 stops against the side of the placement groove 2032 away from the lower mold 102, the second molding wall 2021 is flush with the third molding wall 2031. Such a setting can prevent the second molding wall 2021 from protruding or recessed in the third molding wall 2031, resulting in the injection gap 103 not matching the preset shape, thereby preventing the injection molded part from being unable to be molded according to the preset shape, and further improving the working reliability of the deep cavity injection mold 100.

[0077] Reference Figure 2 and Figure 8 In some embodiments of the present application, the end wall of the first ejector 201 opposite to the second ejector portion 2023 is provided with a first guide structure 2012, and the end wall of the second ejector portion 2023 opposite to the first ejector 201 is provided with a second guide structure 2025. The first guide structure 2012 and the second guide structure 2025 cooperate with each other in a guiding manner so that when the first ejector 201 moves, it is suitable for driving the second ejector portion 2023 to move closer to or away from the lower mold 102, and the second ejector 202 is suitable for moving relative to the first ejector 201 along the radial direction of the first ejector 201.

[0078] Both the first guide structure 2012 and the second guide structure 2025 have an inclination, and the inclination of the first guide structure 2012 is equal to the inclination of the second guide structure 2025. Along the radial direction of the first ejector 201, from the central axis of the first ejector 201 to the outer peripheral wall of the first ejector 201, the first guide structure 2012 and the second guide structure 2025 both extend obliquely downward.

[0079] When the driving mechanism 40 drives the first ejector part to move away from the lower mold 102 through the first connecting rod 4014, the first ejector 201 drives the second ejector 202 to move away from the lower mold 102 through the first guide structure 2012, and moves inward relative to the first connecting rod 4014. That is, when the second ejector 202 moves away from the lower mold 102, the second ejector 202 simultaneously moves closer to the first connecting rod 4014.

[0080] When the driving mechanism 40 drives the first ejector 201 to move close to the lower mold 102 through the first connecting rod 4014, the first ejector portion drives the second ejector 202 to move close to the lower mold 102 through the first guide structure 2012, and moves outward relative to the first connecting rod 4014. That is, when the second ejector 202 moves close to the lower mold 102, the second ejector portion 2023 moves away from the first connecting rod 4014 at the same time. This arrangement eliminates the need to add an external power source to drive the second ejector 202 to move, thereby reducing the manufacturing cost of the deep cavity injection mold 100.

[0081] Further, one of the first guide structure 2012 and the second guide structure 2025 may be a guide protrusion, and the other may be a guide recess.

[0082] Reference Figure 2 , Figure 5 and Fig. 9 In some embodiments of the present application, the driving mechanism 40 includes a first ejector plate assembly 401, which is located on a side of the lower mold 102 away from the upper mold 101. The first ejector plate assembly 401 includes a first ejector plate 4011, a second ejector plate 4012 and a first driving member 4015. The first ejector plate 4011 and the second ejector plate 4012 are detachably connected. In some specific embodiments, the first ejector plate 4011 and the second ejector plate 4012 are detachably connected via threaded fasteners, and the first ejector plate 4011 is located on a side of the second ejector plate 4012 away from the lower mold 102.

[0083] In addition, a driving portion 2026 is provided at one end of the second connecting rod 2024 away from the second ejection portion 2023, one end of the first driving member 4015 is connected and matched with the second ejection plate 4012, and a driving groove 4016 is provided at the other end of the first driving member 4015. Along the first direction of the deep cavity injection mold 100, the first direction of the deep cavity injection mold 100 can refer to Figure 2 In the left and right directions, the driving groove 4016 extends from the left side wall of the first driving member 4015 to the right side wall of the first driving member 4015, that is, the driving groove 4016 passes through the first driving member 4015. Such an arrangement allows the driving part 2026 to enter the driving groove 4016 from the left side wall or the right side wall of the first driving member 4015, thereby preventing the driving part 2026 from interfering with the first driving member 4015.

[0084] Furthermore, the driving part 2026 is guided and matched with the driving groove 4016, and the driving part 2026 moves along the driving groove 4016 close to or away from the first connecting rod 4014, and the second ejector plate 4012 is used to drive the first driving member 4015 to drive the second ejector 202 to move away from or close to the lower mold 102. When the second ejector plate 4012 moves close to the lower mold 102, the second ejector plate 4012 drives the second ejector 202 to move away from the lower mold 102 through the driving member, and the second ejector 202 moves along the driving groove 4016 close to the first connecting rod 4014 through the driving part 2026, and the second ejector 202 moves along the first guide groove close to the first ejector 201, that is, along the height direction of the deep cavity injection mold 100, the second ejector 202 moves obliquely upward close to the first ejector 201. When the second ejector plate 4012 moves away from the lower mold 102, the second ejector plate 4012 drives the second ejector 202 to move closer to the lower mold 102 through the driving member, and the second ejector 202 moves away from the first connecting rod 4014 along the driving groove 4016 through the driving portion 2026, and the second ejector 202 moves away from the first ejector 201 along the first guide groove. That is, along the height direction of the deep cavity injection mold 100, the second ejector 202 moves obliquely downward away from the first ejector 201.

[0085] The first top plate assembly 401 can simultaneously drive the first demolding mechanism 20 to move closer to or away from the lower mold 102 through the first connecting rod 4014 and the first driving member 4015. Compared with the first top plate assembly 401 driving the first demolding mechanism 20 to move closer to or away from the lower mold 102 through the first connecting rod 4014, such a configuration can reduce the difficulty of the first top plate assembly 401 driving the first demolding mechanism 20 to move closer to or away from the lower mold 102.

[0086] In some specific embodiments, the driving portion 2026 may be configured as a driving protrusion, and the driving groove 4016 may be configured as a driving recess, and the driving protrusion extends into the driving recess.

[0087] Reference Figure 2 and Figure 4 In some embodiments of the present application, the driving mechanism 40 also includes: a second top plate assembly 403, the second top plate assembly 403 is arranged on a side of the first top plate assembly 401 close to the lower mold 102, that is, the second top plate assembly 403 is located between the first top plate assembly 401 and the lower mold 102, the second top plate assembly 403 includes a third ejector plate 4033 and a fourth ejector plate 4034, the third ejector plate 4033 and the fourth ejector plate 4034 are detachably connected, the third ejector plate 4033 is located on a side of the fourth ejector plate 4034 away from the lower mold 102, and the first connecting rod 4014 passes through the second top plate assembly 403 and is connected to the first top plate assembly 401.

[0088] The second ejector assembly 403 is used to drive the push plate 301 to move closer to or away from the lower mold 102. Specifically, the second demolding mechanism 30 further includes a plurality of ejector pins 302, which are sequentially spaced apart along the circumferential direction of the deep cavity injection mold 100. One end of each of the ejector pins 302 is connected and matched with the push plate 301, and the other end of each of the ejector pins 302 is connected and matched with the third ejector plate 4033. In other words, one end of each of the ejector pins 302 away from the push plate 301 is sandwiched between the third ejector plate 4033 and the fourth ejector plate 4034. When the second ejector assembly 403 moves closer to the lower mold 102, the second ejector assembly 403 drives the push plate 301 to move away from the lower mold 102 through the ejector pins 302. When the second ejector assembly 403 moves away from the lower mold 102, the second ejector assembly 403 drives the push plate 301 to move closer to the lower mold 102 through the ejector pins 302. In addition, the second ejector plate assembly 403 simultaneously drives the push plate 301 to move closer to or away from the lower mold 102 through multiple ejector pins 302. This arrangement can prevent the push plate 301 from tilting and causing interference between the push plate 301 and the upper mold cavity 1011 or the first demolding mechanism 20, thereby improving the working reliability of the deep cavity injection mold 100.

[0089] The locking assembly 404 and the reset assembly 405, the locking assembly 404 is installed on the outer side wall of the second top plate assembly 403, and the locking assembly 404 is suitable for locking between the second top plate assembly 403 and the first top plate assembly 401, the reset assembly 405 is installed in the first top plate assembly 401, and the reset assembly 405 is used to release the second top plate assembly 403 and the first top plate assembly 401.

[0090] The power source is connected to the second top plate assembly 403 in a transmission manner. When the power source drives the second top plate assembly 403 to move close to the lower mold 102, the locking assembly 404 enables the second top plate assembly 403 to drive the first top plate assembly 401 to move close to the lower mold 102, and the first top plate assembly 401 drives the first ejector 201 and the second ejector 202 to move away from the lower mold 102, and the second top plate assembly 403 simultaneously drives the push plate 301 to move away from the lower mold 102, so that the injection molded part is separated from the guide member 203 and the molding portion 2022.

[0091] Furthermore, when the first top plate assembly 401 moves to the first preset position, the locking assembly 404 unlocks the first top plate assembly 401 and the second top plate assembly 403, the first top plate assembly 401 stops moving and remains at the first preset position, the power source continues to drive the second top plate assembly 403 to move away from the lower mold 102, and the second top plate assembly 403 drives the push plate 301 to continue to move away from the lower mold 102, so that the push plate 301 can eject the injection molded part from the first ejector 201. By arranging the locking assembly 404 in the driving mechanism 40, the second top plate assembly 403 drives the first top plate assembly 401 to move close to the lower mold 102 through the locking assembly 404. Compared with using multiple power sources to drive the first top plate assembly 401 and the second top plate assembly 403 to move respectively, such an arrangement can reduce the number of power sources, thereby reducing the difficulty of using the deep cavity injection mold 100.

[0092] When the first top plate assembly 401 moves to the first preset position, the reset assembly 405 locks the first top plate assembly 401, so that when the second top plate assembly 403 does not move away from the lower mold 102, the first top plate assembly 401 cannot move away from the lower mold 102. When the power source drives the second top plate assembly 403 to move away from the lower mold 102, the reset assembly 405 causes the second top plate assembly 403 to drive the first top plate assembly 401 to move away from the lower mold 102. Specifically, the second top plate assembly 403 moves away from the lower mold 102. 02 moves, the second top plate assembly 403 unlocks the first top plate assembly 401 through the reset assembly 405, and the second top plate assembly 403 drives the first top plate assembly 401 to move away from the lower mold 102. When the first top plate assembly 401 moves to the second preset position, the locking assembly 404 locks the first top plate assembly 401 and the second top plate assembly 403, so that when the second top plate assembly 403 moves close to the lower mold 102, the second top plate assembly 403 can drive the first top plate assembly 401 to move close to the lower mold 102.

[0093] By setting a reset component 405 in the driving mechanism 40, the first top plate component 401 can be prevented from moving away from the lower mold 102 in advance. Then, the first top plate component 401 drives the first ejector 201 and the second ejector 202 to move closer to the lower mold 102, which can prevent the molding part 2022 from resetting to the initial position in advance. When the molding part 2022 is reset to the initial position in advance, the molding part 2022 is located on the side of the push plate 301 close to the lower mold 102, thereby preventing the push plate 301 from interfering with the molding part 2022 when the push plate 301 moves close to the lower mold 102, thereby preventing the molding part 2022 from being damaged. Such a setting can improve the working reliability of the deep cavity injection mold 100.

[0094] It should be noted that when the first top plate assembly 401 is located at the first preset position, the spacing distance between the first molding wall 2011 and the second molding wall 2021 along the radial direction of the first demolding mechanism 20 is the largest, and when the first top plate assembly 401 is located at the second preset position, the first molding wall 2011 and the second molding wall 2021 are arranged flush.

[0095] Reference Figure 2 , Figure 4 and Figure 6 In some embodiments of the present application, the driving mechanism 40 also includes a base plate 406, the first top plate assembly 401 and the second top plate assembly 403 are both located on the side of the base plate 406 close to the lower mold 102, the locking assembly 404 includes a first spring 4041 and a locking piece 4042, and the side wall of the first top plate assembly 401 away from the first demolding mechanism 20 is provided with a first receiving groove 4017, specifically, the outer side wall of the first top plate assembly 401 away from the first connecting rod 4014 is provided with a first receiving groove 4017, and the first receiving groove 4017 is located between the first ejection plate 4011 and the second ejection plate 4012.

[0096] In addition, the first receiving groove 4017 defines a receiving space 4018, and the locking member 4042 and the first spring 4041 are both arranged in the first receiving groove 4017. One end of the first spring 4041 is connected and cooperated with the first ejection plate 4011, and the other end is connected and cooperated with the locking member 4042. The locking member 4042 is suitable for extending out or extending into the first receiving groove 4017. The second top plate assembly 403 is provided with a second driving member 4031 near the side wall of the first receiving groove 4017, and the bottom plate 406 is provided with an unlocking member 4061 near the side wall of the first receiving groove 4017. The locking member 4042 is suitable for locking with the second driving member 4031.

[0097] The second driving member 4031 is arranged on the side wall of the second top plate assembly 403 close to the first accommodating groove 4017, the unlocking member 4061 is arranged on the side wall of the bottom plate 406 close to the first accommodating groove 4017, and the locking member 4042 is locked with the second driving member 4031. Specifically, the second driving member 4031 is provided with a locking groove 4035. When the locking member 4042 extends out of the first accommodating groove 4017, the locking groove 4035 and the side of the locking member 4042 close to the bottom plate 406 are locked. When the locking member 4042 extends into the first accommodating groove 4017, the locking groove 4035 and the side of the locking member 4042 close to the bottom plate 406 are unlocked. The unlocking member 4061 is provided with a first avoidance groove, and the first avoidance groove is used for avoiding the second driving member 4031.

[0098] When the locking member 4042 extends out of the first receiving groove 4017 and into the locking recess 4035 , the second top plate assembly 403 drives the first top plate assembly 401 to move closer to the lower mold 102 through the second driving member 4031 . When the first top plate assembly 401 moves to the first preset position, the second driving member 4031 and the unlocking member 4061 stop, and the unlocking member 4061 drives the locking member 4042 to extend into the first accommodating groove 4017 to unlock the second driving member 4031 and the locking member 4042. Specifically, the side wall of the unlocking member 4061 close to the first top plate assembly 401 is provided with an unlocking portion 4063. When the first top plate assembly 401 moves to the first preset position, the end wall of the locking member 4042 away from the first top plate assembly 401 stops with the unlocking portion 4063, and the unlocking portion 4063 pushes the locking member 4042 to extend into the first accommodating groove 4017 to disengage the locking member 4042 from the locking groove 4035, thereby unlocking the first top plate assembly 401 and the second top plate assembly 403.

[0099] Further, the unlocking portion 4063 can be constructed as a first unlocking slope, and the end wall of the locking piece 4042 away from the first top plate assembly 401 can be constructed as a second unlocking slope, and the first unlocking slope and the second unlocking slope are both inclined in the same direction, that is, along the height direction of the deep cavity injection mold 100, the first unlocking slope and the second unlocking slope can be inclined upward or downward at the same time. In this way, when the first unlocking slope and the second unlocking slope stop, and the second unlocking slope moves upward along the first unlocking slope, the first unlocking slope pushes the locking piece 4042 through the second unlocking slope to extend into the first accommodating groove 4017.

[0100] By locking the second driving member 4031 with the locking member 4042 and driving the locking member 4042 to extend into the first receiving groove 4017 through the unlocking member 4061, the technical effect of the second top plate assembly 403 driving the first top plate assembly 401 to move to the first preset position can be achieved.

[0101] Reference Figure 2 , Figure 4 and Figure 7In some embodiments of the present application, the second ejector plate 4012 is provided with a second accommodating groove 4019, and the second accommodating groove 4019 defines a moving channel 4020. The driving mechanism 40 also includes a bottom plate 406, and the reset assembly 405 includes a second spring 4051 and a first limit member 4052. The bottom plate 406 is provided with a second limit member 4062. The second ejector plate assembly 403 is provided with a third driving member 4032. The second limit member 4062 and the third driving member 4032 are both connected to the second accommodating groove 4019. Specifically, the third driving member 4032 is connected and cooperated with the third ejector plate 4033. The end of the second limit member 4062 away from the bottom wall extends into the second accommodating groove 4019, and the end of the third driving member 4032 away from the third ejector plate 4033 extends into the second accommodating groove 4019.

[0102] The first limiting member 4052 and the second spring 4051 are both arranged in the second accommodating groove 4019, one end of the second spring 4051 is connected and cooperated with the second ejection plate 4012, and the other end of the second spring 4051 is connected and cooperated with the first limiting member 4052, and the first limiting member 4052 is suitable for moving along the movable channel 4020 to move closer to or away from the second limiting member 4062.

[0103] When the first top plate assembly 401 does not move to the first preset position, the side wall of the first limit member 4052 away from the second spring 4051 abuts against the side wall of the second limit member 4062 close to the second spring 4051. When the first top plate assembly 401 moves to the first preset position, along the height direction of the deep cavity injection mold 100, the first limit member 4052 is located above the second limit member 4062, the first limit member 4052 is opposite to the second limit member 4062, and the side of the first limit member 4052 close to the bottom plate 406 abuts against the side of the second limit member 4062 away from the bottom plate 406, thereby preventing the first top plate assembly 401 from moving close to the lower mold 102 when the second top plate assembly 403 does not move away from the lower mold 102, thereby avoiding premature resetting of the molding portion 2022.

[0104] When the second top plate assembly 403 moves away from the lower mold 102, the third driving member 4032 drives the first limiting member 4052 to move away from the second limiting member 4062, so that the second top plate assembly 403 drives the first top plate assembly 401 to move away from the lower mold 102. Specifically, the first limiting member 4052 is provided with a guide hole 4053, and the guide hole 4053 is spaced apart from the second limiting member 4062. The side wall of the guide hole 4053 away from the second limiting member 4062 has a first guide portion 4054, and the third driving member 4032 is close to the bottom plate 406 The end wall has a second guide portion 4036, and the first guide portion 4054 cooperates with the second guide portion 4036 for guiding. When the second top plate assembly 403 moves away from the lower mold 102, the second top plate assembly 403 drives the first limit member 4052 to move away from the second limit member 4062 through the second guide portion 4036, so that the first limit member 4052 and the second limit member 4062 are separated. When the first limit member 4052 and the second limit member 4062 are separated, the second top plate assembly 403 drives the first top plate assembly 401 to move away from the lower mold 102.

[0105] The first limit member 4052 and the second limit member 4062 are used to stop the first top plate assembly 401, thereby preventing the first top plate assembly 401 from moving away from the lower mold 102 before the second top plate assembly 403. The third driving member 4032 drives the first limit member 4052 to move away from the second limit member 4062, thereby achieving the technical effect that the second top plate assembly 403 can drive the first top plate assembly 401 to move away from the lower mold 102.

[0106] Reference Figure 1 , Figure 2 and Fig.10 In some embodiments of the present application, when the injection molded part has multiple undercut structures, there may be multiple second ejectors 202, and the multiple second ejectors 202 are sequentially spaced apart and arranged along the circumferential direction of the deep cavity injection mold 100. In some specific embodiments, the multiple second ejectors 202 may correspond to the multiple undercut structures one by one, or one or more of the multiple second ejectors 202 may correspond to the multiple undercut structures, that is, one of the multiple second ejectors 202 may correspond to the multiple undercut structures, or some of the multiple second ejectors 202 may correspond to the multiple undercut structures, or all of the multiple second ejectors 202 may correspond to the multiple undercut structures. When the second ejector 202 corresponds to the multiple undercut structures, the second ejector 202 is provided with multiple molding parts 2022, and the multiple molding parts 2022 correspond to the multiple undercut structures one by one. Designers can set one or more second ejectors 202 in the deep cavity injection mold 100 according to different structural requirements of injection molded parts, thereby improving the usability of the deep cavity injection mold 100 .

[0107] Further, in some specific embodiments, when the deep cavity injection mold 100 is provided with a plurality of second ejectors 202, one or more of the plurality of second ejectors 202 may be provided with a driving portion 2026 and a second guide structure 2025 at the same time, and the second ejectors 202 not provided with a driving portion 2026 are all provided with a second guide structure 2025, and when the plurality of second ejectors 202 are all provided with a driving portion 2026, the first ejector plate assembly 401 is provided with a plurality of first driving members 4015, and the plurality of first driving members 4015 correspond one-to-one to the plurality of driving portions 2026, and when the plurality of second ejectors 202 are all provided with a second guide structure 2025, the first ejector 201 is provided with a plurality of first driving members 4015, and the plurality of first guide structures 2012 correspond one-to-one to the plurality of second guide structures 2025. Designers can provide one or more of the plurality of second ejectors 202 with a driving portion 2026 and / or a second guide structure 2025 according to different usage requirements, thereby realizing different driving modes of the plurality of second ejectors 202 , thereby improving the usability of the deep cavity injection mold 100 .

[0108] Furthermore, when there are multiple second ejector parts 202, the guide part 203 is provided with multiple placement grooves 2032 and multiple first guide grooves, and the multiple placement grooves 2032 and the multiple first guide grooves are arranged in sequence and spaced apart along the circumferential direction of the deep cavity injection mold 100, and the multiple placement grooves 2032 and the multiple first guide grooves correspond one by one to the multiple second ejector parts 202.

[0109] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A deep cavity injection mold, characterized in that: include: A mold assembly (10), the mold assembly (10) comprising an upper mold (101) and a lower mold (102), the upper mold (101) being arranged opposite to the lower mold (102), and the upper mold (101) being adapted to move closer to or farther from the lower mold (102), the upper mold (101) defining an upper mold cavity (1011) and having a feed port (1012) and a feed channel (1013), the feed channel (1013) being connected between the feed port (1012) and the upper mold cavity (1011); A first demoulding mechanism (20), wherein the first demoulding mechanism (20) is installed on the lower mold (102), and the first demoulding mechanism (20) is suitable for extending into the upper mold cavity (1011) to be separated from the inner wall of the upper mold cavity (1011) to form an injection gap (103), and the first demoulding mechanism (20) comprises a first ejector (201), a second ejector (202) and a guide member (203), wherein the first ejector (201) has a first molding wall (2011), and the second ejector (202) has a first molding wall (2011). The first ejection member (202) has a second molding wall (2021), the guide member (203) has a third molding wall (2031), the first ejection member (201) is connected and matched with the second ejection member (202), the second ejection member (202) is guided and matched with the guide member (203), the second ejection member (202) has a molding portion (2022), and the molding portion (2022) is protruding or recessed from the second molding wall (2021) along the radial direction of the first demoulding mechanism (20); A second demoulding mechanism (30), the second demoulding mechanism (30) being installed on the lower mold (102), the second demoulding mechanism (30) comprising a push plate (301), the push plate (301) being used to eject the plastic part molded in the injection gap (103) from the first ejector (201); a driving mechanism (40), wherein the driving mechanism (40) is connected and cooperated with the first demoulding mechanism (20) and the second demoulding mechanism (30); when the driving mechanism (40) drives the first ejector (201) to move away from the lower mold (102), the first ejector (201) drives the second ejector (202) to move away from the lower mold (102), and the guide member (203) guides the second ejector (202) to move inward relative to the first ejector (201) along the radial direction of the first demoulding mechanism (20), and the driving mechanism (40) drives the push plate (301) to move away from the lower mold (102); When the driving mechanism (40) drives the first ejector (201) to move close to the lower mold (102), the first ejector (201) drives the second ejector (202) to move close to the lower mold (102), and the guide member (203) guides the second ejector (202) to move outward relative to the first ejector (201) along the radial direction of the first demoulding mechanism (20), and the driving mechanism (40) drives the push plate (301) to move close to the lower mold (102), so that the first molding wall (2011), the second molding wall (2021) and the third molding wall (2031) are arranged flush with each other; The second ejector (202) comprises a second ejector portion (2023) and a second connecting rod (2024); the second ejector portion (2023) has the second molding wall (2021); the second ejector portion (2023) is connected to one end of the second connecting rod (2024); and the second connecting rod (2024) is guided and matched with the guide member (203); The end wall of the first ejector (201) opposite to the second ejector portion (2023) is provided with a first guide structure (2012), and the end wall of the second ejector portion (2023) opposite to the first ejector (201) is provided with a second guide structure (2025). The first guide structure (2012) and the second guide structure (2025) cooperate with each other in a guiding manner so that when the first ejector (201) moves, it is suitable for driving the second ejector portion (2023) to move closer to or away from the lower mold (102), and the second ejector (202) is suitable for moving relative to the first ejector (201) along the radial direction of the first ejector (201).

2. A deep cavity injection mold according to claim 1, characterized in that: The driving mechanism (40) comprises a first ejector plate assembly (401), the first ejector plate assembly (401) being located on a side of the lower mold (102) away from the upper mold (101), the first ejector plate assembly (401) comprising a first ejector plate (4011) and a second ejector plate (4012), the first ejector plate (4011) and the second ejector plate (4012) being detachably connected, the first ejector plate (4011) being located on a side of the second ejector plate (4012) away from the lower mold (102), the second ejector plate (4012) being provided with a first avoidance hole (4013), a first connecting rod (4014) being connected between the first ejector plate (4011) and the first ejector member (201), the first connecting rod (4014) passing through the first avoidance hole (4013) and being guided and matched with the guide member (203).

3. A deep cavity injection mold according to claim 1, characterized in that: A side wall of the guide member (203) away from the first ejector member (201) is provided with a placement groove (2032), and the placement groove (2032) is used to place the second ejector part (2023). When a side of the second ejector part (2023) close to the lower mold (102) abuts against a side of the placement groove (2032) away from the lower mold (102), the second molding wall (2021) is flush with the third molding wall (2031).

4. A deep cavity injection mold according to claim 1, characterized in that: The driving mechanism (40) comprises a first ejector plate assembly (401), the first ejector plate assembly (401) being located on a side of the lower mold (102) away from the upper mold (101), the first ejector plate assembly (401) comprising a first ejector plate (4011), a second ejector plate (4012) and a first driving member (4015), the first ejector plate (4011) and the second ejector plate (4012) being detachably connected, the first ejector plate (4011) being located on a side of the second ejector plate (4012) away from the lower mold (102), the A driving part (2026) is provided at one end of the second connecting rod (2024) away from the second ejection part (2023), one end of the first driving member (4015) is connected and matched with the second ejection plate (4012), and a driving groove (4016) is provided at the other end of the first driving member (4015), and the driving part (2026) is guided and matched with the driving groove (4016), and the second ejection plate (4012) is used to drive the first driving member (4015) to drive the second ejection member (202) to move away from or close to the lower mold (102).

5. A deep cavity injection mold according to claim 4, characterized in that: The driving mechanism (40) further comprises: a second top plate assembly (403), the second top plate assembly (403) being arranged on a side of the first top plate assembly (401) close to the lower mold (102), the second top plate assembly (403) being used to drive the push plate (301) to move closer to or away from the lower mold (102); a locking assembly (404) and a reset assembly (405), wherein the locking assembly (404) is mounted on a side wall of the first top plate assembly (401), and the locking assembly (404) is suitable for being locked between the second top plate assembly (403) and the first top plate assembly (401); the reset assembly (405) is mounted in the first top plate assembly (401), and the reset assembly (405) is used to release the second top plate assembly (403) and the first top plate assembly (401); A power source, the power source being in transmission connection with the second top plate assembly (403), and when the power source drives the second top plate assembly (403) to move close to the lower mold (102), the locking assembly (404) enables the second top plate assembly (403) to drive the first top plate assembly (401) to move close to the lower mold (102), and when the first top plate assembly (401) moves to a first preset position, the locking assembly (404) unlocks the first top plate assembly (401) and the second top plate assembly (403); When the power source drives the second top plate assembly (403) to move away from the lower mold (102), the reset assembly (405) enables the second top plate assembly (403) to drive the first top plate assembly (401) to move away from the lower mold (102); when the first top plate assembly (401) moves to the second preset position, the locking assembly (404) locks the first top plate assembly (401) and the second top plate assembly (403); when the first top plate assembly (401) is located at the first preset position, the spacing distance between the first molding wall (2011) and the second molding wall (2021) along the radial direction of the first demolding mechanism (20) is the largest; when the first top plate assembly (401) is located at the second preset position, the first molding wall (2011) and the second molding wall (2021) are arranged flush with each other.

6. A deep cavity injection mold according to claim 5, characterized in that: The driving mechanism (40) further comprises a bottom plate (406), the first top plate assembly (401) being located on a side of the bottom plate (406) close to the lower mold (102), the locking assembly (404) comprising a first spring (4041) and a locking member (4042), a side wall of the first top plate assembly (401) away from the first demoulding mechanism (20) being provided with a first receiving groove (4017), the first receiving groove (4017) defining a receiving space (4018), the locking member (4042) and the first spring (4041) being both provided in the first receiving groove (401 7), one end of the first spring (4041) is connected and matched with the first ejector plate (4011), and the other end is connected and matched with the locking member (4042), the locking member (4042) is suitable for extending out of or into the first receiving groove (4017), the second ejector plate assembly (403) is provided with a second driving member (4031) near the side wall of the first receiving groove (4017), the bottom plate (406) is provided with an unlocking member (4061) near the side wall of the first receiving groove (4017), and the locking member (4042) is suitable for locking with the second driving member (4031); The second top plate assembly (403) drives the first top plate assembly (401) to move closer to the lower mold (102) through the second driving member (4031). When the first top plate assembly (401) moves to the first preset position, the second driving member (4031) and the unlocking member (4061) abut against each other, and the unlocking member (4061) drives the locking member (4042) to extend into the first receiving groove (4017), so that the second driving member (4031) and the locking member (4042) are unlocked.

7. The deep cavity injection mold according to claim 5, characterized in that: The second ejector plate (4012) is provided with a second accommodating groove (4019), and the second accommodating groove (4019) defines a moving channel (4020). The driving mechanism (40) further includes a bottom plate (406). The reset assembly (405) includes a second spring (4051) and a first limiter (4052). The bottom plate (406) is provided with a second limiter (4062). The second ejector plate assembly (403) is provided with a third driving member (4032). The second limiter (4062) and the third drive member (4032) are connected to the reset assembly (405). The third driving member (4032) is connected to the second receiving groove (4019), the first limiting member (4052) and the second spring (4051) are both arranged in the second receiving groove (4019), one end of the second spring (4051) is connected and matched with the second ejection plate (4012), and the other end is connected and matched with the first limiting member (4052), and the first limiting member (4052) is suitable for moving along the moving channel (4020) to move closer to or away from the second limiting member (4062); When the first top plate assembly (401) moves to the first preset position, the first limiting member (4052) is opposite to the second limiting member (4062), and the side of the first limiting member (4052) close to the bottom plate (406) is stopped at the side of the second limiting member (4062) away from the bottom plate (406); when the second top plate assembly (403) moves away from the lower mold (102), the third driving member (4032) drives the first limiting member (4052) to move away from the second limiting member (4062), so that the second top plate assembly (403) drives the first top plate assembly (401) to move away from the lower mold (102).

8. The deep cavity injection mold according to claim 1, characterized in that: There are a plurality of the second ejector members (202), and the plurality of the second ejector members (202) are arranged in sequence and spaced apart along the circumferential direction of the deep cavity injection mold (100).

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