Composite internal extraction device and injection mold

Abstract

The application relates to the technical field of molds, and discloses a composite inner pulling device and an injection mold. The composite inner pulling device comprises a mold frame, a large straight ejector, a driving mechanism, a first core pulling mechanism and a second core pulling mechanism. In the vertical direction, the large straight ejector is movable relative to the mold frame, and the large straight ejector is provided with a first channel, a second channel and a third channel. In the vertical direction, the driving mechanism is movably arranged in the first channel. In the first direction, the first core pulling mechanism is movably arranged in the second channel. In the second direction, the second core pulling mechanism is movably arranged in the third channel. The driving mechanism is provided with a first matching part to drive the first core pulling mechanism to move in the first direction when the large straight ejector moves upwards, and the driving mechanism is further provided with a second matching part to drive the second core pulling mechanism to move in the second direction when the large straight ejector moves upwards. The composite inner pulling device can realize the ejection of different angle reverse buckling.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of molds, in particular to a composite inner pulling device and an injection mold. BACKGROUND

[0002] Injection molding, also known as injection molding, is a molding method of injection and molding. The molten material is injected into the mold, and the shaped product is obtained after cooling and solidification.

[0003] In the mold ejection process, the ejection of the undercut cannot be ignored. Therefore, how to realize the ejection of different angle undercuts is a technical problem that needs to be solved in the mold technology. SUMMARY

[0004] The application provides a composite inner pulling device which can realize the ejection of different angle undercuts.

[0005] In order to achieve the above purpose, the main technical scheme adopted by the application comprises:

[0006] In a first aspect, the application provides a composite inner pulling device, comprising a mold frame, a large straight top, a driving mechanism, a first core pulling mechanism and a second core pulling mechanism. In the vertical direction, the large straight top is movable relative to the mold frame. The large straight top has a first channel, a second channel and a third channel. In the vertical direction, the driving mechanism is movably arranged in the first channel. In the first direction, the first core pulling mechanism is movably arranged in the second channel. In the second direction, the second core pulling mechanism is movably arranged in the third channel. The driving mechanism is provided with a first matching part to drive the first core pulling mechanism to move in the first direction when the large straight top moves upward. The driving mechanism is also provided with a second matching part to drive the second core pulling mechanism to move in the second direction when the large straight top moves upward.

[0007] The composite inner pulling device provided by the application can move in different directions through the first core pulling mechanism and the second core pulling mechanism, so as to be applicable to the ejection of products with complex structures. Through the joint action of the two core pulling mechanisms, the ejection of undercuts in multiple angles and directions can be realized, so as to realize the molding of products with multiple direction undercuts and improve the demolding efficiency.

[0008] Optionally, the lower part of the first channel is open to form a first opening. In the vertical direction, the mold frame has a first stop surface arranged opposite to the first opening.

[0009] In the vertical direction, a first elastic member is arranged between the large straight top and the driving mechanism. The first elastic member is configured to drive the driving mechanism to move towards the first stop surface when the driving mechanism is separated from the first stop surface.

[0010] In the above scheme, the driving mechanism is automatically moved by the first elastic member driving the driving mechanism, so that the driving mechanism can automatically move with the movement of the large straight top, which not only provides power for the core pulling, but also improves the smoothness of the mold opening and closing and core pulling action.

[0011] Optionally, the first limiting block is arranged on the large straight top and located in the first channel to limit the movement range of the driving mechanism towards the first stop surface.

[0012] In the above scheme, the first limiting block is located in the first channel to limit the movement range of the driving mechanism towards the first stop surface, which can prevent the driving mechanism from moving excessively towards the first stop surface, thereby ensuring that the driving mechanism moves within a predetermined range, thereby improving the precision and stability of the mold releasing process and enabling the driving mechanism to be automatically reset.

[0013] Optionally, along the first direction, the second elastic member is arranged between the large straight top and the first core pulling mechanism, and the second elastic member is configured to drive the first core pulling mechanism to move in the first direction.

[0014] In the above scheme, when the driving mechanism moves, the second elastic member can provide the necessary elastic force for the first core pulling mechanism to help the first core pulling mechanism move in the first direction, thereby realizing the reverse buckling mold releasing in the first direction.

[0015] Optionally, along the first direction, the first matching part has oppositely arranged first and second inclined surfaces.

[0016] The first core pulling mechanism is provided with a first groove, and the first matching part is arranged in the first groove. Along the first direction, the first groove has oppositely arranged first and second matching surfaces, the first matching surface is adapted to abut against the first inclined surface, and the second matching surface is adapted to abut against the second inclined surface.

[0017] In the above scheme, through the abutment of the first matching surface and the first inclined surface and the abutment of the second matching surface and the second inclined surface, the first groove and the first matching part can form a more intimate connection, and when the first core pulling mechanism is driven to relatively displace the driving mechanism, the abutment of the first matching surface and the first inclined surface and the abutment of the second matching surface and the second inclined surface also facilitate the relative displacement between the first matching part and the first groove, thereby helping the first core pulling mechanism to disengage from the driving mechanism, so that the first core pulling mechanism can move more smoothly, thereby improving the reliability and stability of the reverse buckling mold releasing.

[0018] Optionally, the second limiting block is arranged on the large straight top, and the first limiting step is arranged on the first core pulling mechanism. Along the first direction, the second limiting block and the first limiting step are oppositely arranged to limit the movement range of the first core pulling mechanism in the first direction.

[0019] In the above scheme, the cooperation between the second limiting block and the first limiting step can accurately control the movement range of the first core pulling mechanism in the first direction, thereby ensuring that the first core pulling mechanism moves within a predetermined range and preventing the first core pulling mechanism from moving excessively to separate from the driving mechanism, thereby improving the accuracy and stability of the ejection process and facilitating the resetting of the first core pulling mechanism after the inverted buckle ejection.

[0020] Optionally, the driving mechanism has a first surface arranged opposite to the inner wall of the first channel, and the first surface is provided with a first wear-resistant sheet.

[0021] In the above scheme, the first surface is in contact with the inner wall of the first channel, and the first wear-resistant sheet can reduce the friction and wear between the first surface and the inner wall of the first channel when the driving mechanism moves. Since the contact and friction between the driving mechanism and the inner wall of the first channel can cause wear, the wear-resistant sheet can effectively slow down this process, thereby improving the stability and life of the driving mechanism movement.

[0022] Optionally, along the second direction, a third elastic member is arranged between the large straight top and the second core pulling mechanism, and the third elastic member is configured to drive the second core pulling mechanism to move along the second direction.

[0023] In the above scheme, when the driving mechanism moves, the third elastic member can provide the necessary elastic force for the second core pulling mechanism to help it move along the second direction, thereby realizing the inverted buckle ejection in the second direction.

[0024] Optionally, the second core pulling mechanism has a first matching hole, and the second matching part passes through the first matching hole.

[0025] Along the second direction, the second matching part has oppositely arranged third and fourth inclined surfaces, and the first matching hole has oppositely arranged third and fourth matching surfaces, the third matching surface is adapted to fit with the third inclined surface, and the fourth matching surface is adapted to fit with the fourth inclined surface.

[0026] In the above scheme, through the fitting of the third matching surface and the third inclined surface and the fitting of the fourth matching surface and the fourth inclined surface, the first matching hole and the second matching part can form a more intimate connection. When the second core pulling mechanism is driven to relatively displace with the driving mechanism, the fitting of the third matching surface and the third inclined surface and the fitting of the fourth matching surface and the fourth inclined surface also facilitate the relative displacement between the second matching part and the first matching hole, so that the second core pulling mechanism can move more smoothly, thereby ensuring the reliability and stability of the inverted buckle ejection.

[0027] Optionally, a third limiting block is arranged on the large straight top, and a second limiting step is arranged on the second core pulling mechanism, and along the second direction, the third limiting block is arranged opposite to the second limiting step to limit the movement amplitude of the second core pulling mechanism in the second direction.

[0028] In the above scheme, the cooperation of the third limiting block and the second limiting step can accurately control the movement range of the second core pulling mechanism in the second direction, thereby ensuring that the second core pulling mechanism moves within a predetermined range and preventing the second core pulling mechanism from moving excessively to separate from the driving mechanism, thereby improving the accuracy and stability of the ejection process, and facilitating the resetting of the second core pulling mechanism after the ejection of the undercut.

[0029] Optionally, the second core pulling mechanism has a second surface opposite to the inner wall of the third channel, and the second surface is provided with a second wear-resistant sheet.

[0030] In the above scheme, the second surface is in contact with the inner wall of the third channel, and the second wear-resistant sheet can reduce the friction and wear between the second surface and the inner wall of the third channel when the second core pulling mechanism moves. The contact and friction between the second core pulling mechanism and the inner wall of the third channel can cause wear, and the second wear-resistant sheet can effectively slow down this process, thereby improving the stability and life of the second core pulling mechanism during movement.

[0031] Optionally, the driving mechanism includes a driving body and a driving head provided on the driving body, the driving head is provided with a first cooperating part and a second cooperating part, and the driving head is detachably provided on the driving body.

[0032] In the above scheme, the driving head and the driving body can move together in the first channel, and the driving head and the driving body are detachably connected, which facilitates disassembly, replacement and maintenance, and improves the applicability of the driving mechanism.

[0033] Optionally, the first core pulling mechanism is provided with a first water channel;

[0034] The composite core pulling device further includes a waterway connecting block, the waterway connecting block passes through the large straight top to connect with the first core pulling mechanism, and the waterway connecting block has a second water channel in communication with the first water channel.

[0035] In the above scheme, the first core pulling mechanism is supplied with cooling water through the waterway connecting block, which can improve the sealing and stability of the waterway connection, help to reduce the risk of water leakage, and improve the reliability and safety of the system.

[0036] In a second aspect, the embodiments of the present application provide an injection mold, which includes the composite core pulling device of any one of the embodiments.

[0037] The injection mold with the above-mentioned composite core pulling device facilitates the ejection of the undercut in multiple directions, and improves the applicability of the injection mold to complex products. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the drawings needed to be used in the description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0039] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application;

[0040] Figure 2 It is a schematic diagram of the overall structure in the embodiment of the present application;

[0041] Figure 3 It is a schematic diagram of the cross-sectional structure at the first elastic member in the embodiment of the present application;

[0042] Figure 4 It is a schematic diagram of the cross-sectional structure of the second elastic member in the embodiment of the present application;

[0043] Figure 5 It is a schematic diagram of the cross-sectional structure at the first matching part in the embodiment of the present application;

[0044] Figure 6 It is a schematic diagram of the structure at the first limiting block in the embodiment of the present application;

[0045] Figure 7 It is a schematic diagram of the cross-sectional structure at the third elastic member in the embodiment of the present application;

[0046] Figure 8 It is a schematic diagram of the cross-sectional structure at the second matching part in the embodiment of the present application;

[0047] Figure 9 It is a schematic diagram of the structure at the second limiting block in the embodiment of the present application;

[0048] Figure 10 It is a schematic diagram of the structure at the driving mechanism in the embodiment of the present application.

[0049]

Explanation of reference numerals

[0050] 100: mold frame; 110: first stop surface;

[0051] 200: large straight top; 210: first channel; 211: first opening; 220: second channel; 230: third channel; 240: first limiting block; 200a: ejection rod;

[0052] 300: driving mechanism; 300a: first surface; 301: first wear-resistant sheet; 302: driving body; 303: driving head; 304: connecting block; 305: pressure-bearing sheet;

[0053] 310: first engaging portion; 311: first inclined surface; 312: second inclined surface;

[0054] 320: second engaging portion; 321: third inclined surface; 321a: third wear-resistant sheet; 322: fourth inclined surface;

[0055] 330: first elastic member; 330a: nitrogen spring; 340: second elastic member; 350: second limiting block; 360: third elastic member; 370: third limiting block;

[0056] 400: first core-pulling mechanism; 401: lubricating oil groove;

[0057] 410: first groove; 411: first engaging surface; 412: second engaging surface;

[0058] 420: first limiting step;

[0059] 430: first water channel;

[0060] 500: second core-pulling mechanism; 500a: second surface; 501: second wear-resistant sheet;

[0061] 510: first engaging hole; 511: third engaging surface; 512: fourth engaging surface;

[0062] 520: second limiting step;

[0063] 600: waterway connecting block; 601: sealing ring; 610: second water channel;

[0064] X: first direction; Y: second direction. DETAILED DESCRIPTION

[0065] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0066] Unless otherwise defined, all technical and scientific terms used in the present application have the same meanings as those commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing the particular embodiments only and is not intended to be limiting of the application; the description and the drawings are to be regarded as illustrative in nature; the word "comprising" and "containing" in the description and the claims, together with variations thereof, such as "comprise" and "comprises" and "contain" and "contains", is used in the sense of "including" and "including", and not by way of "consisting of" or "consisting of". The terms "first", "second" and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of use in either order.

[0067] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that that the embodiments described herein are merely examples from among a great variety of embodiments that can be made in accordance with the present application.

[0068] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "attaching" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0069] The term "and / or" in the present application is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0070] "Multiple" appearing in the present application refers to two or more (including two), and similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0071] After the injection molding of the product is completed, the mold needs to be opened so that the product can be taken out. Since the injection molded part becomes hard after cooling, it is usually necessary to rely on the ejection system of the mold to eject the product from the mold. This process usually involves the design and manufacture of the mold to ensure that the product can be smoothly separated from the mold.

[0072] The internal extraction mechanism can only be formed in the same ejection direction of the reverse buckle. For reverse buckles with multiple different ejection directions, the ordinary internal extraction mechanism cannot realize the molding of the product.

[0073] In view of this, in order to demold two undercuts that produce overlap in the main demolding direction, embodiments of the present application provide a composite core-pulling device, please refer to Figure 1 and Figure 2 , comprising a mold frame 100, a large ejector 200, a driving mechanism 300, a first core-pulling mechanism 400 and a second core-pulling mechanism 500.

[0074] In the vertical direction, the large ejector 200 is movable relative to the mold frame 100, and it can be understood that the large ejector 200 can function to lift the plastic part. During the synchronous ejection stage of the injection molding process, the large ejector 200 presses the plastic part in the demolding direction, making it stick to the cavity, providing an opportunity for the large inclined ejector on both sides to deform and separate the undercut of the plastic part from the cavity, preventing the cavity from being damaged at the moment of opening.

[0075] The large ejector 200 has a first channel 210, a second channel 220 and a third channel 230, and it can be understood that the first channel 210, the second channel 220 and the third channel 230 can be used for undercut demolding.

[0076] In the vertical direction, the driving mechanism 300 is movably arranged in the first channel 210, that is, the driving mechanism 300 can move in the vertical direction in the first channel 210.

[0077] In the first direction X, the first core-pulling mechanism 400 is movably arranged in the second channel 220, that is, the first core-pulling mechanism 400 can move in the first direction X in the second channel 220.

[0078] In the second direction Y, the second core-pulling mechanism 500 is movably arranged in the third channel 230, that is, the second core-pulling mechanism 500 can move in the second direction Y in the third channel 230.

[0079] It can be understood that by arranging the driving mechanism 300 and the two core-pulling mechanisms in different channels, the internal space of the large ejector 200 can be effectively utilized, and the mold structure is more compact.

[0080] The driving mechanism 300 is provided with a first matching part 310 to drive the first core-pulling mechanism 400 to move in the first direction X when the large ejector 200 moves upwards, and it can be understood that the first matching part 310 can drive the first core-pulling mechanism 400 to move in the second direction X in the second channel 220, thereby realizing the undercut demolding in the first direction X.

[0081] The driving mechanism 300 is further provided with a second matching part 320 to drive the second core pulling mechanism 500 to move in the second direction Y when the large straight top 200 moves upward, and it can be understood that the second matching part 320 can drive the second core pulling mechanism 500 to move in the second direction Y in the third channel 230, so as to realize the demolding in the second direction Y.

[0082] In the above scheme, the first core pulling mechanism 400 and the second core pulling mechanism 500 can move in different directions respectively, so as to be applicable to the demolding of products with complex structures, especially the workpiece structure with multiple holes or recesses in different directions on the side surface. Through the joint action of the two core pulling mechanisms, the demolding in multiple angles and directions can be realized, so as to realize the forming of products with multiple direction demolding, and the demolding efficiency can be improved.

[0083] By setting the first matching part 310 and the second matching part 320, the first core pulling mechanism 400 and the second core pulling mechanism 500 can be driven to move respectively, so as to improve the accuracy and synchronism of the demolding action, and reduce the probability of product damage or mold damage caused by improper demolding.

[0084] In other embodiments, please refer to Figure 3 The first channel 210 is open downward to form a first opening 211, and it can be understood that the first opening 211 is towards the mold frame 100, so that the driving mechanism 300 in the first channel 210 can move close to or away from the mold frame 100 in the vertical direction.

[0085] In the vertical direction, the mold frame 100 has a first stop surface 110 arranged opposite to the first opening 211, and it can be understood that the first stop surface 110 can stop the large straight top 200, when the large straight top 200 moves in the vertical direction, the large straight top 200 can move close to or away from the first stop surface 110, and when the large straight top 200 abuts against the first stop surface 110, the first stop surface 110 can block the first opening 211.

[0086] In the vertical direction, the first elastic member 330 is arranged between the large straight top 200 and the driving mechanism 300, and it can be understood that the first elastic member 330 can stretch and contract between the large straight top 200 and the driving mechanism 300.

[0087] The first elastic member 330 is configured to drive the driving mechanism 300 to move towards the first stop surface 110 when the driving mechanism 300 is separated from the first stop surface 110, and it can be understood that through the stretching and contracting action of the first elastic member 330, the relative displacement between the driving mechanism 300 and the large straight top 200 can be generated, so that the driving mechanism 300 moves in the first channel 210.

[0088] Meanwhile, the large ejector 200 moves along the vertical direction, and the large ejector 200 is separated from the first stop surface 110, so that the first stop surface 110 no longer blocks the first opening 211, and the driving mechanism 300 can continue to move towards the first stop surface 110 by extending out of the first opening 211 along the vertical direction.

[0089] In the above scheme, the driving mechanism 300 is automatically moved by the first elastic member 330, so that the driving mechanism 300 can automatically move along with the movement of the large ejector 200, not only providing power for the core pulling, but also improving the smoothness of the mold opening and core pulling action.

[0090] In other embodiments, please refer to Figure 3 The first limiting block 240 is arranged on the large ejector 200, and it can be understood that the first limiting block 240 can play a limiting role, and the limiting effect changes with the movement of the large ejector 200.

[0091] The first limiting block 240 is located in the first channel 210, and it can be understood that the first limiting block 240 can play a limiting role in the first channel 210, and can limit the movement of the driving mechanism 300 in the first channel 210.

[0092] The first limiting block 240 is located in the first channel 210 to limit the movement amplitude of the driving mechanism 300 towards the first stop surface 110, which can prevent the driving mechanism 300 from moving excessively towards the first stop surface 110, thereby preventing the driving mechanism 300 from being separated from the large ejector 200, facilitating the resetting of the driving mechanism 300, and improving the smoothness of the mold opening and core pulling action.

[0093] In the above scheme, the limiting block can ensure that the driving mechanism 300 moves within a predetermined range, thereby improving the precision and stability of the mold opening process, and enabling the driving mechanism 300 to be automatically reset.

[0094] In other embodiments, please refer to Figure 4 Along the first direction X, the second elastic member 340 is arranged between the large ejector 200 and the first core pulling mechanism 400, and it can be understood that the second elastic member 340 has elasticity and can play a role of stretching and contracting between the large ejector 200 and the first core pulling mechanism 400.

[0095] The second elastic member 340 is configured to drive the first core pulling mechanism 400 to move along the first direction X, and it can be understood that the first core pulling mechanism 400 can move relative to the large ejector 200 along with the stretching and contracting of the second elastic member 340, thereby moving in the second channel 220, and further realizing the reverse ejection of the first direction X.

[0096] In the above scheme, when the driving mechanism 300 moves, the second elastic member 340 can provide the necessary elastic force for the first core pulling mechanism 400 to help the first core pulling mechanism 400 move along the first direction X, thereby achieving the ejection of the undercut in the first direction X.

[0097] In addition, the second elastic member 340 facilitates the reset of the first core pulling mechanism 400 after the ejection of the undercut, and prepares for the next ejection, improving the smoothness of the overall action.

[0098] In other embodiments, please refer to Figure 5 , along the first direction X, the first matching part 310 has oppositely arranged first and second inclined surfaces 311 and 312. It can be understood that the first and second inclined surfaces 311 and 312 can help the relative displacement of the first core pulling mechanism 400 and the driving mechanism 300, reducing the probability of mutual jamming of the first core pulling mechanism 400 and the driving mechanism 300 during movement.

[0099] At the same time, the cooperation of the first and second inclined surfaces 311 and 312 can keep the first matching part 310 in good cooperation with the first recess 410, whether the first core pulling mechanism 400 moves forward or reversely along the first direction X.

[0100] The first core pulling mechanism 400 is provided with the first recess 410. It can be understood that the first recess 410 is recessed inwardly along the first direction X to the first core pulling mechanism 400, which facilitates cooperation with the first matching part 310 and facilitates movement of the first core pulling mechanism 400 in the second channel 220.

[0101] The first matching part 310 is arranged in the first recess 410, and along the first direction X, the first recess 410 has oppositely arranged first and second matching surfaces 411 and 412. It can be understood that the first and second matching surfaces 411 and 412 can help the mutual movement of the first core pulling mechanism 400 and the driving mechanism 300. Since the contact between the inclined surfaces reduces friction, the movement between the driving mechanism 300 and the first core pulling mechanism 400 is more smooth and efficient.

[0102] The first matching surface 411 is adapted to be matched with the first inclined surface 311, and the second matching surface 412 is adapted to be matched with the second inclined surface 312. Through the matching of the first matching surface 411 with the first inclined surface 311 and the matching of the second matching surface 412 with the second inclined surface 312, the first recess 410 and the first matching part 310 can form a more compact connection, and when the first core pulling mechanism 400 is driven to relatively displace the driving mechanism 300, the matching of the first matching surface 411 with the first inclined surface 311 and the matching of the second matching surface 412 with the second inclined surface 312 also facilitate the relative displacement between the first matching part 310 and the first recess 410, thereby playing a role in helping the first core pulling mechanism 400 to disengage from the driving mechanism 300, so that the first core pulling mechanism 400 can move more smoothly, thereby improving the reliability and stability of the inverted buckle mold stripping.

[0103] In other embodiments, please refer to Figure 6 The second limiting block 350 is arranged on the large straight top 200, and it can be understood that the second limiting block 350 can play a role in limiting on the large straight top 200.

[0104] The first limiting step 420 is arranged on the first core pulling mechanism 400, and it can be understood that the first limiting step 420 can play a role in limiting the first core pulling mechanism 400.

[0105] The second limiting block 350 is arranged on the large straight top 200, and it can be understood that the second limiting block 350 can play a role in limiting on the large straight top 200.

[0106] In the above scheme, the cooperation of the second limiting block 350 and the first limiting step 420 can accurately control the movement range of the first core pulling mechanism 400 in the first direction X, thereby ensuring that the first core pulling mechanism 400 moves within a predetermined range and preventing the first core pulling mechanism 400 from moving excessively to separate from the driving mechanism 300, thereby improving the accuracy and stability of the mold stripping process and facilitating the resetting of the first core pulling mechanism 400 after the inverted buckle mold stripping.

[0107] In other embodiments, please refer to Figure 6 The driving mechanism 300 has a first surface 300a arranged opposite to the inner wall of the first channel 210, and the first surface 300a is provided with a first wear-resistant sheet 301.

[0108] It can be understood that the first surface 300a is in contact with the inner wall of the first channel 210, and when the driving mechanism 300 moves, the first wear-resistant sheet 301 can play a role in reducing the friction and wear between the first surface 300a and the inner wall of the first channel 210. Since the contact and friction between the driving mechanism 300 and the inner wall of the first channel 210 can cause wear, the wear-resistant sheet can effectively slow down this process and improve the stability and life of the movement of the driving mechanism 300.

[0109] In addition, the arrangement of the wear-resistant piece can increase the contact area between the first surface 300a and the inner wall of the first channel 210, thereby providing better stability and support force, which helps to ensure the stability and reliability of the driving mechanism 300 during the operation of the mold.

[0110] As an example, the first surface 300a can be multiple, the first wear-resistant piece 301 can be multiple, and the multiple first wear-resistant pieces 301 can be arranged on the multiple surfaces of the driving mechanism 300 respectively, thereby further reducing the contact and friction between the driving mechanism 300 and the inner wall of the first channel 210.

[0111] In other embodiments, please refer to Figure 7 In the second direction Y, a third elastic piece 360 is arranged between the large straight top 200 and the second core pulling mechanism 500. It can be understood that the third elastic piece 360 has elasticity and can function as an extension and contraction between the large straight top 200 and the second core pulling mechanism 500.

[0112] The third elastic piece 360 is configured to drive the second core pulling mechanism 500 to move in the second direction Y. It can be understood that the second core pulling mechanism 500 can move relative to the large straight top 200 along with the extension and contraction of the third elastic piece 360, thereby moving in the third channel 230 and achieving the demolding of the second direction Y.

[0113] In the above scheme, when the driving mechanism 300 moves, the third elastic piece 360 can provide the necessary elastic force for the second core pulling mechanism 500 to help the second core pulling mechanism 500 move in the second direction Y, thereby achieving the demolding of the second direction Y.

[0114] In addition, the third elastic piece 360 facilitates the resetting of the second core pulling mechanism 500 after demolding and prepares for the next ejection, thereby improving the smoothness of the overall action.

[0115] In other embodiments, please refer to Figure 8 The second core pulling mechanism 500 has a first matching hole 510. It can be understood that the first matching hole 510 penetrates the second core pulling mechanism 500, which facilitates the cooperation between the second core pulling mechanism 500 and the driving mechanism 300.

[0116] The second matching part 320 passes through the first matching hole 510. It can be understood that the first matching part 310 can slide along the first matching hole 510, so that the second matching part 320 can limit the second core pulling mechanism 500 through the first matching hole 510, thereby achieving the locking and fixing of the second core pulling mechanism 500 and the driving mechanism 300.

[0117] Along the second direction Y, the second fitting part 320 has oppositely arranged third and fourth inclined surfaces 321 and 322. It can be understood that the third and fourth inclined surfaces 321 and 322 can help the relative displacement of the second core pulling mechanism 500 and the driving mechanism 300, ensure smooth movement of the second core pulling mechanism 500 and the driving mechanism 300, and reduce the probability of mutual jamming of the second core pulling mechanism 500 and the driving mechanism 300 during movement.

[0118] At the same time, the cooperation of the third and fourth inclined surfaces 321 and 322 can ensure good cooperation between the second fitting part 320 and the first fitting hole 510, regardless of the forward or reverse movement of the second core pulling mechanism 500 along the second direction Y, to ensure the smoothness of the core pulling process.

[0119] The first fitting hole 510 has oppositely arranged third and fourth fitting surfaces 511 and 512. It can be understood that the third and fourth fitting surfaces 511 and 512 can help the mutual movement of the second core pulling mechanism 500 and the driving mechanism 300. Since the contact between the inclined surfaces reduces friction, the movement between the driving mechanism 300 and the second core pulling mechanism 500 is more smooth and efficient.

[0120] The third fitting surface 511 is adapted to be attached to the third inclined surface 321, and the fourth fitting surface 512 is adapted to be attached to the fourth inclined surface 322. Through the attachment of the third fitting surface 511 to the third inclined surface 321 and the attachment of the fourth fitting surface 512 to the fourth inclined surface 322, the first fitting hole 510 and the second fitting part 320 can form a more intimate connection. When the second core pulling mechanism 500 is driven to move relative to the driving mechanism 300, the attachment of the third fitting surface 511 to the third inclined surface 321 and the attachment of the fourth fitting surface 512 to the fourth inclined surface 322 also facilitate the relative displacement between the second fitting part 320 and the first fitting hole 510, so that the second core pulling mechanism 500 can move more smoothly, thereby ensuring the reliability and stability of the reverse buckling demolding.

[0121] In other embodiments, please refer to Figure 9 The third limiting block 370 is arranged on the large straight top 200. It can be understood that the third limiting block 370 can function as a limiting block on the large straight top 200.

[0122] The second limiting step 520 is arranged on the second core pulling mechanism 500. It can be understood that the second limiting step 520 can function as a limiting block on the second core pulling mechanism 500,

[0123] Along the second direction Y, the third limiting block 370 is oppositely arranged with the second limiting step 520 to limit the movement range of the second core pulling mechanism 500 in the second direction Y.

[0124] In the above scheme, the cooperation between the third limiting block 370 and the second limiting step 520 can accurately control the movement range of the second core pulling mechanism 500 in the second direction Y, thereby ensuring that the second core pulling mechanism 500 moves within a predetermined range and preventing the second core pulling mechanism 500 from moving excessively to separate from the driving mechanism 300, thereby improving the accuracy and stability of the demolding process and facilitating the resetting of the second core pulling mechanism 500 after the undercut demolding.

[0125] In other embodiments, referring to Figure 9 , the second core pulling mechanism 500 has a second surface 500a opposite to the inner wall of the third channel 230, and the second surface 500a is provided with a second wear-resistant sheet 501.

[0126] It can be understood that the second surface 500a is in contact with the inner wall of the third channel 230, and when the second core pulling mechanism 500 moves, the second wear-resistant sheet 501 can reduce the friction and wear between the second surface 500a and the inner wall of the third channel 230. The contact and friction between the second core pulling mechanism 500 and the inner wall of the third channel 230 will cause wear, and the second wear-resistant sheet 501 can effectively slow down this process, improving the stability and life of the second core pulling mechanism 500 during movement.

[0127] In addition, the provision of the wear-resistant sheet can increase the contact area between the second surface 500a and the inner wall of the third channel 230, thereby providing better stability and support force, which helps to ensure the stability and reliability of the second core pulling mechanism 500 during mold operation.

[0128] As an example, the second surface 500a can be multiple, and the second wear-resistant sheet 501 can be multiple, and the multiple second wear-resistant sheets 501 can be arranged on the multiple surfaces of the second core pulling mechanism 500, thereby further reducing the contact and friction between the second core pulling mechanism 500 and the inner wall of the third channel 230.

[0129] In other embodiments, referring to Figure 10 , the driving mechanism 300 includes a driving body 302 and a driving head 303 arranged on the driving body 302, and it can be understood that the driving head 303 and the driving body 302 move together in the first channel 210.

[0130] The driving head 303 is provided with a first cooperating part 310 and a second cooperating part 320, and the driving head 303 is detachably arranged on the driving body 302.

[0131] In the above scheme, the driving head 303 is provided with a first matching part 310 and a second matching part 320, and the first core pulling mechanism 400 and the second core pulling mechanism 500 can be matched with the driving head 303, and the driving head 303 and the driving body 302 are detachably connected, which facilitates disassembly, replacement and maintenance, and improves the applicability of the driving mechanism 300.

[0132] In other embodiments, please refer to Figure 7 , the first core pulling mechanism 400 is provided with a first water channel 430, and it can be understood that the first water channel 430 can play a role in conveying cooling water, thereby reducing the temperature of the first core pulling mechanism 400, facilitating demolding.

[0133] The composite core pulling device further comprises a waterway connecting block 600, through which the cooling water in the composite core pulling device can flow conveniently, the waterway connecting block 600 passes through the large straight top 200 to connect with the first core pulling mechanism 400, thereby playing a role in conveying cooling water for the first core pulling mechanism 400, and the waterway connecting block 600 has a second water channel 610 in communication with the first water channel 430, so that the cooling water can flow smoothly through the second water channel 610 and the first water channel 430 to the first core pulling mechanism 400, thereby ensuring the cooling effect of the first core pulling mechanism 400.

[0134] In the above scheme, the waterway connecting block 600 conveys cooling water for the first core pulling mechanism 400, which can ensure the sealing and stability of the waterway connection, help to reduce the risk of water leakage, and improve the reliability and safety of the system.

[0135] In one specific embodiment, please refer to Figure 2 , the large straight top 200 is provided with a plurality of vertically extending ejection rods 200a, and the plurality of ejection rods 200a penetrate through the large straight top 200 and move along the vertical direction together with the large straight top 200.

[0136] Please refer to Figure 10 , the first elastic member 330 is configured as a nitrogen gas spring 330a, which is an elastic component with high-pressure nitrogen gas as working medium, does not need to be pre-tightened, can provide a gentle elastic force curve, and can realize constant pressure and delay action, thereby ensuring the sequence of inverted buckle demolding.

[0137] One end of the waterway connecting block 600 is screw-connected with the first core pulling mechanism 400, and the other end of the waterway connecting block 600 is provided with a sealing ring 601, which can play a role in sealing the waterway, thereby ensuring the reliability of the core pulling device.

[0138] The first core pulling mechanism 400 is provided with a meshed lubricating oil groove 401, which is arranged opposite to the driving head 303 along the second direction Y. The lubricating oil groove 401 can store oil and lubricate, thereby improving the moving smoothness of the first core pulling mechanism 400, helping the relative movement of the first core pulling mechanism 400 and the driving mechanism 300, and reducing the abrasion of the first core pulling mechanism 400.

[0139] The third inclined surface 321 is provided with a third wear-resistant sheet 321a, which can reduce the friction between the third inclined surface 321 and the third matching surface 511, make the mutual movement between the driving mechanism 300 and the second core pulling mechanism 500 more stable, reduce the abrasion, and increase the service life.

[0140] The movement process of the driving mechanism 300 is briefly described below.

[0141] When the large straight ejector 200 is ejected upward, the connecting block 304 arranged at the bottom of the driving mechanism 300 is lifted by the first elastic member 330, the connecting block 304 drives the driving body 302 and the driving head 303 to move in the direction of the elastic force, and the ejection action is realized. When the large straight ejector 200 moves downward to reset, the connecting block 304 is in contact with the mold frame 100, the connecting block 304 is pressed upward by the mold frame 100, and the driving mechanism is reset.

[0142] The movement process of the first core pulling mechanism 400 is briefly described below.

[0143] At the initial stage of the ejection action of the combined core pulling device, the first core pulling mechanism 400 is no longer pressed by the large straight ejector 200 due to the opposite movement of the driving mechanism 300 and the large straight ejector 200 under the action of the first elastic member 330, so that the second elastic member 340 ejects the first core pulling mechanism 400 along the first direction. At this time, the first matching part 310 on the driving mechanism 300 will contact and hook the first groove 410 of the first core pulling mechanism 400 through the inclined surface, assisting the ejection action of the first core pulling mechanism 400. When the elastic force of the second elastic member 340 is insufficient, the first core pulling mechanism 400 cannot be ejected. After the first core pulling mechanism 400 moves a certain distance, the first core pulling mechanism 400 and the driving mechanism 300 gradually separate due to the difference in movement direction.

[0144] When the driving mechanism 300 resets, the large straight ejector 200 descends, the pressure-bearing sheet 305 arranged on the driving mechanism 300 is in contact with the top surface of the first core pulling mechanism 400, and the first core pulling mechanism 400 is pressed back to reset.

[0145] The movement process of the second core pulling mechanism 500 is briefly described below.

[0146] When the composite inner core pulling device performs the initial stage of the ejection action, the driving mechanism 300 moves in the opposite direction of the large straight top 200 under the action of the first elastic member 330, so that the second core pulling mechanism 500 is no longer pressed by the large straight top 200, and the third elastic member 360 ejects the second core pulling mechanism 500 in the second direction. At this time, the fourth inclined surface 322 on the second matching part 320 will be in contact with the fourth matching surface 512 on the first matching hole 510, which will assist the second core pulling mechanism 500 to perform the ejection action, so that the second core pulling mechanism 500 can be ejected when the elastic force of the third elastic member 360 is insufficient. After the second core pulling mechanism 500 moves a certain distance, it gradually separates from the driving mechanism 300 due to the difference in the movement direction. When the driving mechanism 300 is reset, the large straight top 200 descends, the third wear-resistant sheet 321a on the driving mechanism 300 is in contact with the third matching surface 511 on the first matching hole 510, and the second core pulling mechanism 500 is driven to reset.

[0147] In some other embodiments, the application discloses an injection mold, which comprises a molding part system, a pouring system, a guiding and positioning system, a temperature adjusting system, an exhaust system, an ejection system and a core pulling system. The molding part system comprises a large straight top 200, a mold frame 100 and an inclined top. The large straight top 200 is suitable for molding an injection part into a required structure, and the mold frame 100 is suitable for accommodating the large straight top 200. The large straight top is provided with the composite inner core pulling device in any one of the above embodiments.

[0148] Since the injection mold of the application is provided with the composite inner core pulling device in any one of the above embodiments, the applicability of the injection mold for complex products is improved.

[0149] It should be further noted that the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0150] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiment.

[0151] The above merely provides an example of the present application, but is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

[0152] Although the embodiments of the present application are described with reference to the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes shall fall within the scope defined by the appended claims.

Claims

1. A composite inner extraction device, characterized in that, include: Module frame; A large vertical ejector, which is movable relative to the mold frame, and has a first channel, a second channel, and a third channel; A driving mechanism is movably disposed in the first channel along the vertical direction; A first core-pulling mechanism is movably disposed in the second channel along a first direction; The second core-pulling mechanism is movably disposed in the third channel along the second direction; The driving mechanism is provided with a first mating part to drive the first core-pulling mechanism to move along the first direction when the large straight top moves upward. The driving mechanism is also provided with a second mating part to drive the second core-pulling mechanism to move along the second direction when the large straight top moves upward.

2. The composite inner extraction device of claim 1, wherein, The lower part of the first channel is open to form a first opening, and along the vertical direction, the mold frame has a first stop surface disposed opposite to the first opening; Along the vertical direction, a first elastic element is provided between the large straight top and the driving mechanism. The first elastic element is configured to drive the driving mechanism to move toward the first stop surface when the driving mechanism is separated from the first stop surface.

3. The composite inner extraction device of claim 2, wherein, A first limiting block is provided on the large straight top, and the first limiting block is located in the first channel to limit the movement range of the drive mechanism toward the first stop surface.

4. The composite inner extraction device of claim 1, wherein, Along the first direction, a second elastic element is provided between the large straight top and the first core-pulling mechanism, and the second elastic element is configured to drive the first core-pulling mechanism to move along the first direction.

5. The composite inner extraction device of claim 4, wherein, Along the first direction, the first mating part has a first inclined surface and a second inclined surface disposed opposite to each other; The first core-pulling mechanism is provided with a first groove, and the first mating part is provided in the first groove. Along the first direction, the first groove has a first mating surface and a second mating surface that are disposed opposite to each other. The first mating surface is adapted to fit against the first inclined surface, and the second mating surface is adapted to fit against the second inclined surface.

6. The composite inner extraction device of claim 4, wherein, A second limiting block is provided on the large straight top, and a first limiting step is provided on the first core pulling mechanism. Along the first direction, the second limiting block and the first limiting step are arranged opposite to each other to limit the movement range of the first core pulling mechanism in the first direction.

7. The composite inner extraction device of claim 1, wherein, The drive mechanism has a first surface disposed opposite to the inner wall of the first channel, and the first surface is provided with a first wear-resistant plate.

8. The composite inner extraction device of claim 1, wherein, Along the second direction, a third elastic element is provided between the large straight top and the second core-pulling mechanism, and the third elastic element is configured to drive the second core-pulling mechanism to move along the second direction.

9. The composite inner extraction device of claim 8, wherein, The second core-pulling mechanism has a first mating hole, and the second mating part passes through the first mating hole; Along the second direction, the second mating part has a third inclined surface and a fourth inclined surface that are disposed opposite to each other, and the first mating hole has a third mating surface and a fourth mating surface that are disposed opposite to each other. The third mating surface is adapted to fit against the third inclined surface, and the fourth mating surface is adapted to fit against the fourth inclined surface.

10. The composite inner extraction device of claim 8, wherein, The third limiting block is arranged on the large straight top, the second limiting step is arranged on the second core pulling mechanism of the driving mechanism, and the third limiting block is arranged opposite to the second limiting step in the second direction to limit the moving range of the second core pulling mechanism in the second direction.

11. The composite inner extraction device of claim 1, wherein, The second core pulling mechanism has a second surface arranged opposite to the inner wall of the third channel, and the second surface is provided with a second wear-resistant sheet.

12. The composite inner extraction device of claim 1, wherein, The driving mechanism comprises a driving body and a driving head arranged on the driving body, the driving head is provided with the first matching part and the second matching part, and the driving head is detachably arranged on the driving body.

13. The composite inner extraction device of claim 1, wherein, The first core pulling mechanism is provided with a first water channel. The composite core pulling device further comprises a waterway connecting block, the waterway connecting block passes through the large straight top to be connected with the first core pulling mechanism, and the waterway connecting block has a second water channel in communication with the first water channel.

14. An injection mold characterized in that, The composite core pulling device comprises any one of claims 1-13.

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