Forming die

Abstract

A forming die can optimize the layout and simplify the structure and comprises an upper die assembly and a lower die assembly which are matched in an opening and closing mode. The insert core assembly is embedded in the lower die assembly; the linkage assembly comprises a shifting rod piece, a sliding piece and an elastic piece, the shifting rod piece movably penetrates through the lower die assembly and the insert core assembly in the first direction, the sliding piece is in sliding connection with the lower die assembly in the second direction, the sliding piece movably penetrates through the shifting rod piece in the second direction and abuts against the shifting rod piece, and the two ends of the elastic piece elastically abut against the lower die assembly and the sliding piece respectively; the forming assembly comprises a first forming piece, a second forming piece and a third forming piece, the first forming piece is arranged on the shifting rod piece in a sliding mode in the second direction and abuts against the shifting rod piece, the second forming piece comprises a forming body and a limiting body, and the forming body movably penetrates through the first forming piece in the second direction and abuts against the first forming piece; the limiting body is arranged on the side, away from the upper die assembly, of the forming body. The third forming piece is slidably arranged at the end, close to the upper die assembly, of the shifting rod piece in the third direction and abuts against the shifting rod piece.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to a molding die. Background Art

[0002] At present, when injecting products with an inner cavity undercut structure, traditional dies generally use angled lifters to participate in product molding. However, when the angled lifters separate from the product during mold opening, a certain demolding angle is required, resulting in the angled lifters occupying a relatively large space in the die, making it difficult to layout the die and the structure complex. Summary of the Utility Model

[0003] In view of the above situation, it is necessary to provide a molding die to optimize the layout and simplify the structure.

[0004] An embodiment of the present application provides a molding die, including a mating upper die assembly and a lower die assembly. The molding die further includes:

[0005] An insert sub-assembly, embedded on one side of the lower die assembly facing the upper die assembly, and cooperating with the upper die assembly to enclose a molding cavity for injecting a product with an inner cavity during mold closing;

[0006] A linkage sub-assembly, including a lever member, a sliding member, and an elastic member. The lever member is movably inserted through the lower die assembly and the insert sub-assembly in a first direction. The sliding member is slidably connected to the lower die assembly in a second direction. The sliding member is movably inserted through the lever member in the second direction and abuts against an inclined surface of the lever member. The elastic force direction of the elastic member is parallel to the second direction, and two ends of the elastic member are respectively elastically abutted against the lower die assembly and the sliding member;

[0007] A molding sub-assembly, including a first molding member, a second molding member, and a third molding member. The first molding member is slidably disposed at one end of the lever member adjacent to the upper die assembly in the second direction and abuts against an inclined surface of the lever member. The second molding member includes a molding body and a limiting body. The molding body is movably inserted through the first molding member in the second direction and abuts against an inclined surface of the first molding member. The molding body forms the undercut structure of the product. The limiting body protrudes from a side of the molding body facing away from the upper die assembly. The limiting body abuts against the lever member during mold closing and abuts against the first molding member during mold opening. The third molding member is slidably disposed at one end of the lever member adjacent to the upper die assembly in a third direction and abuts against an inclined surface of the lever member. The first direction, the second direction, and the third direction are perpendicular to each other in pairs;

[0008] When the mold is closed, the sliding member presses the elastic member to the lower mold assembly, and the first molding member, the molding body and the third molding member participate in enclosing the molding cavity. When the mold is opened, the sliding member is driven by the compressed elastic member to move close to the input assembly, and pushes the lever member to move away from the upper mold assembly, so that the first molding member and the second molding member are withdrawn from the product, and the molding body is withdrawn from the undercut structure.

[0009] When the molding mold is in mold closing, the sliding part compresses the elastic part to the lower mold assembly under the drive of the upper mold assembly, and drives the lever part to move close to the upper mold assembly, so that the first molding part, the molding body and the third molding part participate in forming a molding cavity under the support of the lever part, and the molding body forms an undercut structure of the molding product. When the molding mold is in mold opening, the upper mold assembly moves away from the sliding part and cancels the push of the sliding part, so that the sliding part moves close to the sub-assembly under the drive of the compressed elastic part, so that the lever part moves away from the upper mold assembly by a first preset distance under the push of the sliding part, so as to drive the first molding part and the second molding part to withdraw from the product, and the molding body to withdraw from the undercut structure, and then the lever part continues to move away from the upper mold assembly by a second preset distance under the push of the sliding part, and loosens the limiting body, so as to drive the first molding part, the molding body and the third molding part to withdraw from the product. In this way, when the mold is closed, the sliding member drives the lever member to move closer to the upper mold assembly under the drive of the upper mold assembly, so that the lever member presses the first molding member, the molding body, and the third molding member to participate in enclosing and forming a molding cavity for the injection molded product. When the mold is opened, the sliding member drives the lever member away from the upper mold assembly under the drive of the elastic member, and limits the demoulding direction of the molding body through the limiting body, so that the first molding member, the molding body and the third molding member can be stably separated from the product with an undercut structure, and there is no need to use a tilted ejector pin to perform molding and demoulding operations on the product with an undercut structure, which avoids the molding structure involved in the molding of the product occupying too much mold space, thereby optimizing the layout and simplifying the structure.

[0010] In some embodiments, the lever member comprises:

[0011] A lever body is movably arranged in the lower mold assembly and the insert assembly along the first direction, the lever body is in oblique contact with the first molded part and the second molded part respectively, and the lever body is provided with an oblique groove, the oblique groove is inclined relative to the first direction and receives part of the sliding part to contact the sliding part;

[0012] The abutting body is arranged on a side of the lever body away from the sliding member and connected to the lever body. The abutting body is used to abut against the limiting body when the mold is closed to limit the demoulding direction of the molded body when the mold is opened.

[0013] In some embodiments, the slider comprises:

[0014] a sliding body, slidably disposed on the lower mold assembly and abutting against the elastic member, and the sliding member is provided with a receiving groove, the receiving groove is inclined relative to the first direction, and the receiving groove is used to receive part of the upper mold assembly, so that the upper mold assembly drives the sliding body to move along the second direction;

[0015] The pressing body is arranged on the side of the sliding body away from the elastic member and is inclined relative to the first direction. The pressing body is movably arranged in the oblique groove and abuts against the lever body. The pressing body is used to drive the lever body to move under the drive of the sliding body.

[0016] In some embodiments, the lever body comprises:

[0017] A lever portion, movably disposed along the first direction through the input sub-assembly and the lower mold assembly and provided with the oblique groove, the lever portion is connected to the abutting body, and the end of the lever portion adjacent to the upper mold assembly is provided with a first guide groove, the first guide groove corresponds to the first molded part and accommodates part of the first molded part, and abuts against and guides the first molded part with an inclined surface;

[0018] The guide portion is protrudingly arranged at one end of the lever portion adjacent to the upper mold assembly and corresponding to the third molded part. The guide portion is inclined relative to the first direction and movably inserted into the third molded part to abut and guide the third molded part with an inclined surface.

[0019] In some embodiments, the first molded part comprises:

[0020] A forming slide block is slidably disposed on the input subassembly and abuts against the inclined surface of the forming body, the forming slide block is provided with an avoidance groove, and the avoidance groove is used to receive part of the forming body to avoid the forming body;

[0021] The abutment body is convexly arranged on a side of the molded sliding block facing the lever portion and is movably inserted into the first guide groove to abut against the lever portion with an inclined surface.

[0022] In some embodiments, a receiving groove is provided on a side of the third molded part facing the lever portion, and the receiving groove is used to receive the guide portion so that the guide portion guides the third molded part.

[0023] In some embodiments, the number of the third molded parts is two, and the two third molded parts are arranged opposite to each other along the third direction and respectively abut against the inclined surface of the lever part.

[0024] In some embodiments, the lower mold assembly includes:

[0025] A lower template, which is provided with a placement groove together with the upper die assembly, and the placement groove is used to accommodate the sliding member, the elastic member and the insert assembly;

[0026] A covering member, which is covered above the elastic member and is detachably connected to the lower template to limit the elastic member; and

[0027] A limiting member, which abuts above a part of the sliding member and is detachably connected to the lower template to limit the sliding member.

[0028] In some embodiments, the insert assembly includes:

[0029] An insert member, which is embedded in the lower die assembly, the shifting rod member movably penetrates through the insert member along the first direction, and the insert member is provided with an avoidance groove for accommodating the pressing body to avoid the pressing body;

[0030] A connecting member, which is arranged on one side of the insert member facing the upper die assembly and is detachably connected to the insert member, and the connecting member abuts against the upper die assembly during mold closing to participate in enclosing to form the molding cavity.

[0031] In some embodiments, the upper die assembly includes:

[0032] An upper template, which is movably arranged above the lower die assembly;

[0033] A backhoe member, which corresponds to the receiving groove and is connected to the side of the upper template facing the lower die assembly, and the backhoe member is used to be inserted into the receiving groove under the drive of the upper template to drive the sliding body to slide. Description of the Drawings

[0034] Figure 1 It is a three-dimensional structural schematic diagram of the molding die provided by the embodiment of the present application.

[0035] Figure 2 It is Figure 1 The sectional schematic diagram of the molding die shown along the II-II direction.

[0036] Figure 3 It is Figure 1 The sectional schematic diagram of the molding die shown along the III-III direction.

[0037] Figure 4 It is Figure 2 The three-dimensional structural schematic diagram of the lower die assembly, the insert assembly, the linkage assembly and the molding assembly shown.

[0038] Figure 5 It is Figure 4 The structural exploded view of the shifting rod member of the linkage assembly and the molding assembly shown.

[0039] Description of Main Component Symbols

[0040] Forming Die 100

[0041] Upper Die Assembly 10

[0042] Upper Template 11

[0043] Backhoe Part 12

[0044] Lower Die Assembly 20

[0045] Lower Template 21

[0046] Placement Groove 211

[0047] Covering Part 22

[0048] Restricting Part 23

[0049] Insert Sub - assembly 30

[0050] Insert Part 31

[0051] Clearance Groove 311

[0052] Connecting Part 32

[0053] Second Guide Groove 321

[0054] Third Guide Groove 322

[0055] Linkage Assembly 40

[0056] Pushing Rod Part 41

[0057] Pushing Rod Body 411

[0058] Oblique Groove 4111

[0059] Pushing Rod Portion 4112

[0060] First Guide Groove 4112a

[0061] Guide Portion 4113

[0062] Abutting Body 412

[0063] Sliding Part 42

[0064] Sliding Body 421

[0065] Receiving Groove 4211

[0066] Pressing Body 422

[0067] Elastic Part 43

[0068] Forming Assembly 50

[0069] The first forming part 51

[0070] The forming slider 511

[0071] The avoidance groove 5111

[0072] The abutting body 512

[0073] The second forming part 52

[0074] The forming body 521

[0075] The limiting body 522

[0076] The third forming part 53

[0077] The accommodating groove 531

[0078] The product 200 Specific embodiments

[0079] The following describes in detail the embodiments of the present application. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0080] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, it should be noted that the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0081] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the term "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, an electrical connection, or a connection that can communicate with each other; it may be a direct connection, or an indirect connection through an intermediate medium, or a connection that is the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to specific circumstances.

[0082] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0083] Please refer to Figure 1 , an embodiment of the present application provides a molding die 100. Please refer to Figure 2 and Figure 3 , the molding die 100 includes an upper die assembly 10, a lower die assembly 20, an insert assembly 30, a linkage assembly 40 and a molding assembly 50, and is used for molding a product 200. Among them, the product 200 has an inner cavity, and an undercut structure is formed on the cavity wall of the inner cavity.

[0084] For the convenience of understanding and description, a three-dimensional coordinate system is established in some of the accompanying drawings. The first direction is the Z-axis direction, the second direction is the X-axis direction, and the third direction is the Y-axis direction. The X-axis direction, the Y-axis direction and the Z-axis direction are perpendicular to each other in pairs.

[0085] Please refer to Figure 2 and Figure 3 , the upper die assembly 10 and the lower die assembly 20 are arranged opposite to each other and are opened and matched. The insert assembly 30 is embedded in the side of the lower die assembly 20 facing the upper die assembly 10. The insert assembly 30 cooperates with the upper die assembly 10 to enclose a molding cavity (not shown in the figure) of the injection molded product 200 when the mold is closed. The linkage assembly 40 includes a lever member 41, a sliding member 42 and an elastic member 43. The lever member 41 is movably disposed through the lower die assembly 20 and the insert assembly 30 along the Z-axis direction. The sliding member 42 is slidably connected to the lower die assembly 20 along the X-axis direction. The sliding member 42 is movably disposed through the lever member 41 along the X-axis direction and is in inclined contact with the lever member 41. The elastic force direction of the elastic member 43 is parallel to the X-axis direction. The two ends of the elastic member 43 are elastically abutted against the lower die assembly 20 and the sliding member 42 respectively. The molding assembly 50 includes a first molding member 51, a second molding member 52 and a third molding member 53. The first molding member 51 is slidably disposed along the X-axis direction at one end of the lever member 41 adjacent to the upper die assembly 10 and is in inclined contact with the lever member 41. The second molding member 52 includes a molding body 521 and a limiting body 522. The molding body 521 is movably disposed through the first molding member 51 along the X-axis direction and is in inclined contact with the first molding member 51. The molding body 521 forms the undercut structure of the product 200. The limiting body 522 protrudes from the side of the molding body 521 facing away from the upper die assembly 10. The limiting body 522 abuts against the lever member 41 when the mold is closed and abuts against the first molding member 51 when the mold is opened. The third molding member 53 is slidably disposed along the Y-axis direction at one end of the lever member 41 adjacent to the upper die assembly 10 and is in inclined contact with the lever member 41. Exemplarily, the elastic member 43 can be a spring.

[0086] When the molding die 100 is in mold closing, the sliding member 42 compresses the elastic member 43 to the lower mold assembly 20 under the drive of the upper mold assembly 10, and drives the lever member 41 to move close to the upper mold assembly 10, so that the first molding member 51, the molding body 521 and the third molding member 53 participate in enclosing and forming a molding cavity under the support of the lever member 41, and the molding body 521 forms an undercut structure of the molding product 200. When the molding die 100 is in mold opening, the upper mold assembly 10 moves away from the sliding member 42 and cancels the push of the sliding member 42, so that the sliding member 42 is compressed. The lever member 41 is driven by the elastic member 43 to move closer to the sub-assembly 30, so that the lever member 41 moves away from the upper mold assembly 10 by a first preset distance under the push of the sliding member 42, so as to drive the first molding member 51 and the second molding member 52 to withdraw from the product 200, and the molding body 521 to withdraw from the undercut structure, and then the lever member 41 continues to move away from the upper mold assembly 10 by a second preset distance under the push of the sliding member 42, and loosens the limiting body 522, so as to drive the first molding member 51, the molding body 521 and the third molding member 53 to separate from the product 200.

[0087] In this way, when the mold is closed, the sliding member 42 is driven by the upper mold assembly 10 to drive the lever member 41 to move closer to the upper mold assembly 10, so that the lever member 41 presses against the first molding member 51, the molding body 521, and the third molding member 53 to participate in enclosing and forming a molding cavity for the injection molded product 200. When the mold is opened, the sliding member 42 is driven by the elastic member 43 to drive the lever member 41 away from the upper mold assembly 10, and the demolding direction of the molding body 521 is limited by the limiting body 522, so that the first molding member 51, the molding body 521 and the third molding member 53 can be stably separated from the product 200 with the undercut structure, and there is no need to use a tilted ejector pin to perform molding and demolding operations on the product 200 with the undercut structure, thereby avoiding the molding mold 100 participating in molding the product 200 from occupying too much mold space, thereby optimizing the layout and simplifying the structure.

[0088] See also Figure 2 In some embodiments, the lever member 41 includes a lever body 411 and a supporting body 412. The lever body 411 is movably disposed in the lower mold assembly 20 and the inserting subassembly 30 along the Z-axis direction. The lever body 411 is in oblique contact with the first molded member 51 and the second molded member 52, respectively, and the lever body 411 is provided with an oblique groove 4111. The oblique groove 4111 is obliquely disposed relative to the Z-axis direction and receives part of the sliding member 42 to contact the sliding member 42. The supporting body 412 is disposed on a side of the lever body 411 away from the sliding member 42 and is connected to the lever body 411. The supporting body 412 is used to contact the limiting body 522 when the mold is closed to limit the demolding direction of the molding body 521 when the mold is opened.

[0089] In this way, the oblique groove 4111 receives part of the sliding member 42, so that the lever body 411 abuts against the inclined surface of the sliding member 42, and the sliding member 42 drives the lever member 41 to move closer to or away from the upper mold assembly 10 through the oblique groove 4111, thereby realizing the linkage function of the sliding member 42 and the lever member 41. In addition, by setting the abutting body 412 to abut against the limiting body 522 during mold closing, and because the abutting body 412 has a certain length, the abutting body 412 always abuts against the limiting body 522 during the movement of the lever body 411 for the first preset distance, thereby preventing the molded body 521 from moving along the X-axis direction when the lever body 411 moves the first preset distance and interfering with the undercut structure of the product 200, thereby ensuring that the molded body 521 moves along the Z-axis direction driven by the first molding member 51 and disengages from the undercut structure. , thereby limiting the demoulding of the molded body 521 with confidence, and the abutting body 412 is loosened from the limiting body 522 when the lever body 411 moves the second preset distance, so that the limiting body 522 and the first molded part 51 withdrawing from the product 200 are mutually abutted, thereby ensuring that the molded body 521 withdrawing from the undercut structure moves along the X-axis direction and separates from the product 200, and then the abutting body 412 can limit the demoulding order of the molded body 521 during the mold opening process, avoiding interference between the molded body 521 and the product 200 when demoulding.

[0090] Please continue reading Figure 2 In some embodiments, the sliding member 42 includes a sliding body 421 and a pressing body 422. The sliding body 421 is slidably disposed on the lower mold assembly 20 and abuts against the elastic member 43, and the sliding member 42 is provided with a receiving groove 4211, which is inclined relative to the Z-axis direction. The receiving groove 4211 is used to receive part of the upper mold assembly 10, so that the upper mold assembly 10 drives the sliding body 421 to move along the X-axis direction. The pressing body 422 is disposed on the side of the sliding body 421 away from the elastic member 43 and is inclined relative to the Z-axis direction. The pressing body 422 is movably disposed in the oblique groove 4111 and abuts against the lever body 411. The pressing body 422 is used to drive the lever body 411 to move under the drive of the sliding body 421.

[0091] In this way, the sliding member 42 drives the pressing body 422 to move closer to or away from the elastic member 43 along the X-axis direction, so that the pressing body 422 pushes the lever member 41 through the oblique groove 4111 to move closer to or away from the upper mold assembly 10, thereby realizing the linkage function of the sliding member 42 and the lever member 41.

[0092] See also Figure 4 and Figure 5, in some embodiments, the lever body 411 includes a lever portion 4112 and a guiding portion 4113. The lever portion 4112 is movably inserted through the insert subassembly 30 and the lower die subassembly 20 in the Z-axis direction and is provided with an inclined groove 4111. The lever portion 4112 is connected to the abutting body 412, and a first guiding groove 4112a is provided at the end of the lever portion 4112 adjacent to the upper die subassembly 10. The first guiding groove 4112a corresponds to the first forming member 51 and houses a part of the first forming member 51 to abut and guide the first forming member 51 with an inclined surface. The guiding portion 4113 protrudes from one end of the lever portion 4112 adjacent to the upper die subassembly 10 and corresponds to the third forming member 53. The guiding portion 4113 is inclined with respect to the Z-axis direction and is movably inserted into the third forming member 53 to abut and guide the third forming member 53 with an inclined surface.

[0093] In this way, by housing a part of the first forming member 51 in the first guiding groove 4112a and movably inserting the guiding portion 4113 into the third forming member 53, the first guiding groove 4112a and the guiding portion 4113 respectively guide the first forming member 51 and the third forming member 53, which is beneficial to ensuring the demolding stability of the forming die 100.

[0094] Please refer to Figure 5 , in some embodiments, the first forming member 51 includes a forming slider 511 and an abutting body 512. The forming slider 511 is slidably disposed in the insert subassembly 30 and abuts against the forming body 521 with an inclined surface. The forming slider 511 is provided with an avoidance groove 5111 for housing a part of the forming body 521 to avoid the forming body 521. The abutting body 512 protrudes from one side of the forming slider 511 facing the lever portion 4112 and is movably inserted into the first guiding groove 4112a to abut against the lever portion 4112 with an inclined surface.

[0095] In this way, by housing a part of the forming body 521 in the avoidance groove 5111, when the lever member 41 moves a first preset distance, the avoidance groove 5111 can provide a certain movement space for the forming body 521, so that the forming body 521 moves away from the upper die subassembly 10 in the Z-axis direction, avoiding collision between the forming body 521 and the forming slider 511. In addition, by movably inserting the abutting body 512 into the first guiding groove 4112a, the first guiding groove 4112a can guide the movement direction of the forming slider 511.

[0096] Please continue to refer to Figure 5 , in some embodiments, a receiving groove 531 is provided on one side of the third forming member 53 facing the lever portion 4112 for receiving the guiding portion 4113 to guide the third forming member 53 by the guiding portion 4113.

[0097] In this way, by providing the receiving groove 531 to receive the guiding portion 4113, the guiding portion 4113 limits the moving direction of the third forming member 53 through the receiving groove 531, which is beneficial to ensuring the stable forming and demolding of the third forming member 53.

[0098] Please refer to Figure 4 , in some embodiments, the number of the third forming members 53 is two, and the two third forming members 53 are oppositely arranged along the Y-axis direction and are respectively in contact with the inclined surface of the shifting rod member 41.

[0099] In this way, by providing two third forming members 53, the forming assembly 50 can simultaneously form two feature structures at two positions in the inner cavity of the product 200.

[0100] It should be noted that the two third forming members 53 can form the same feature structure or different feature structures.

[0101] Please refer to Figure 2 and Figure 4 , in some embodiments, the lower mold assembly 20 includes a lower template 21, a covering member 22 and a limiting member 23. The lower template 21 and the upper mold assembly 10 are provided with a placement groove 211 for receiving the sliding member 42, the elastic member 43 and the insert sub-assembly 30. The covering member 22 is covered above the elastic member 43 and is detachably connected to the lower template 21 to limit the elastic member 43. The limiting member 23 abuts against the upper part of a part of the sliding member 42 and is detachably connected to the lower template 21 to limit the sliding member 42.

[0102] In this way, by receiving the sliding member 42, the elastic member 43 and the insert sub-assembly 30 through the placement groove 211, the forming die 100 can be reasonably arranged. In addition, by respectively providing the covering member 22 and the limiting member 23 above the elastic member 43 and the sliding member 42 to respectively limit the elastic member 43 and the sliding member 42, the elastic member 43 always provides an elastic force along the X-axis direction, and the sliding member 42 always slides along the X-axis direction, improving the movement stability of the sliding assembly.

[0103] Please refer to Figure 2 and Figure 4 , in some embodiments, the insert sub-assembly 30 includes an insert member 31 and a connecting member 32. The insert member 31 is embedded in the lower mold assembly 20, the shifting rod member 41 movably penetrates through the insert member 31 along the Z-axis direction, and the insert member 31 is provided with an avoidance groove 311 for receiving the pressing body 422 to avoid the pressing body 422. The connecting member 32 is provided on one side of the insert member 31 facing the upper mold assembly 10 and is detachably connected to the insert member 31. The connecting member 32 abuts against the upper mold assembly 10 during mold closing to participate in enclosing to form a forming cavity.

[0104] In this way, by detachably connecting the connecting member 32 to the insert member 31, the insert assembly 30 can be formed into a split structure, which facilitates the disassembly of the insert assembly 30 to replace the worn connecting member 32, the first forming member 51, the second forming member 52, and the third forming member 53.

[0105] In this embodiment, the number of the connecting members 32 is multiple. The multiple connecting members 32 are evenly spaced on one side of the insert member 31 facing the upper die assembly 10 and are respectively detachably connected to the insert member 31. The multiple connecting members 32 enclose to form a second guiding groove 321 and a third guiding groove 322 that are perpendicular to each other. The second guiding groove 321 and the third guiding groove 322 respectively receive part of the first forming member 51 and part of the third forming member 53 to guide the first forming member 51 and the third forming member 53 respectively. Among them, in this embodiment, the number of the connecting members 32 is four, and the four connecting members 32 are arranged at the four corner positions of the insert member 31 facing the upper die assembly 10. In other embodiments, the number of the connecting members 32 can also be two, three, five, etc., as long as the second guiding groove 321 and the third guiding groove 322 can be formed, which will not be elaborated here.

[0106] In this way, through the first guiding groove 4112a and the second guiding groove 321 formed by enclosing the multiple connecting members 32, the movement directions of the first forming member 51 and the third forming member 53 can be limited respectively, further improving the forming stability and the demolding stability.

[0107] Please refer to Figure 2 , in some embodiments, the upper die assembly 10 includes an upper template 11 and a backhoe member 12. The upper template 11 is movably arranged above the lower die assembly 20. The backhoe member 12 corresponds to the receiving groove 4211 and is connected to one side of the upper template 11 facing the lower die assembly 20. The backhoe member 12 is used to be inserted into the receiving groove 4211 under the drive of the upper template 11 to drive the sliding body 421 to slide.

[0108] In this way, when the upper template 11 drives the backhoe member 12 to be inserted into the receiving groove 4211 during the forming operation, the backhoe member 12 can push against the sliding member 42 to approach and compress the elastic member 43. When the demolding operation is performed, the backhoe member 12 is driven to move out of the receiving groove 4211 and the pushing against the sliding member 42 is cancelled, so that the compressed elastic member 43 drives the sliding member 42 to reset, and then the upper die assembly 10 repeats the operation of forming the product 200.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A molding die, characterized in that: The molding die comprises an upper mold assembly and a lower mold assembly which are adapted to be opened, and the molding die also comprises: The sub-assembly is embedded in the side of the lower mold assembly facing the upper mold assembly, and cooperates with the upper mold assembly to enclose and form a molding cavity for injecting a product with an inner cavity when the mold is closed; A linkage assembly, comprising a lever, a sliding member and an elastic member, wherein the lever is movably provided in the lower mold assembly and the inserting member along a first direction, the sliding member is slidably connected with the lower mold assembly along a second direction, the sliding member is movably provided in the lever along the second direction and abuts against the inclined surface of the lever, the elastic force direction of the elastic member is parallel to the second direction, and the two ends of the elastic member are elastically held against the lower mold assembly and the sliding member respectively; The molding assembly comprises a first molding member, a second molding member and a third molding member, wherein the first molding member is slidably arranged at one end of the lever member adjacent to the upper mold assembly along the second direction and abuts against the inclined surface of the lever member, the second molding member comprises a molding body and a limiting body, the molding body is movably arranged in the first molding member along the second direction and abuts against the inclined surface of the first molding member, the molding body molds the undercut structure of the product, the limiting body is convexly arranged at a side of the molding body away from the upper mold assembly, the limiting body abuts against the lever member when the mold is closed, and abuts against the first molding member when the mold is opened, the third molding member is slidably arranged at one end of the lever member adjacent to the upper mold assembly along the third direction and abuts against the inclined surface of the lever member, and the first direction, the second direction and the third direction are perpendicular to each other; When the mold is closed, the sliding member presses the elastic member to the lower mold assembly, and the first molding member, the molding body and the third molding member participate in enclosing the molding cavity. When the mold is opened, the sliding member is driven by the compressed elastic member to move close to the input assembly, and pushes the lever member to move away from the upper mold assembly, so that the first molding member and the second molding member are withdrawn from the product, and the molding body is withdrawn from the undercut structure.

2. The molding die according to claim 1, characterized in that: The lever member comprises: A lever body is movably arranged in the lower mold assembly and the insert assembly along the first direction, the lever body is in oblique contact with the first molded part and the second molded part respectively, and the lever body is provided with an oblique groove, the oblique groove is inclined relative to the first direction and receives part of the sliding part to contact the sliding part; The abutting body is arranged on a side of the lever body away from the sliding member and connected to the lever body. The abutting body is used to abut against the limiting body when the mold is closed to limit the demoulding direction of the molded body when the mold is opened.

3. The molding die according to claim 2, characterized in that: The sliding member comprises: a sliding body, slidably disposed on the lower mold assembly and abutting against the elastic member, and the sliding member is provided with a receiving groove, the receiving groove is inclined relative to the first direction, and the receiving groove is used to receive part of the upper mold assembly, so that the upper mold assembly drives the sliding body to move along the second direction; The pressing body is arranged on the side of the sliding body away from the elastic member and is inclined relative to the first direction. The pressing body is movably arranged in the oblique groove and abuts against the lever body. The pressing body is used to drive the lever body to move under the drive of the sliding body.

4. The molding die according to claim 2, characterized in that: The lever body comprises: A lever portion, movably disposed along the first direction through the input sub-assembly and the lower mold assembly and provided with the oblique groove, the lever portion is connected to the abutting body, and the end of the lever portion adjacent to the upper mold assembly is provided with a first guide groove, the first guide groove corresponds to the first molded part and accommodates part of the first molded part, and abuts against and guides the first molded part with an inclined surface; The guide portion is protrudingly arranged at one end of the lever portion adjacent to the upper mold assembly and corresponding to the third molded part. The guide portion is inclined relative to the first direction and movably inserted into the third molded part to abut and guide the third molded part with an inclined surface.

5. The molding die according to claim 4, characterized in that: The first molded part comprises: A forming slide block is slidably disposed on the input subassembly and abuts against the inclined surface of the forming body, the forming slide block is provided with an avoidance groove, and the avoidance groove is used to receive part of the forming body to avoid the forming body; The abutment body is convexly arranged on a side of the molded sliding block facing the lever portion and is movably inserted into the first guide groove to abut against the lever portion with an inclined surface.

6. The molding die according to claim 4, characterized in that: A receiving groove is provided on a side of the third molded part facing the lever portion, and the receiving groove is used to receive the guide portion so that the guide portion guides the third molded part.

7. The molding die according to claim 1, characterized in that: The number of the third molded parts is two, and the two third molded parts are arranged opposite to each other along the third direction and respectively abut against the inclined surface of the lever part.

8. The molding die according to claim 1, wherein: The lower mold assembly comprises: A lower mold plate, which is provided with a placement groove together with the upper mold assembly, and the placement groove is used to accommodate the sliding member, the elastic member and the insertion sub-assembly; a covering member, which is disposed above the elastic member and is detachably connected to the lower template to limit the elastic member; and The limiting member abuts against the upper part of a part of the sliding member and is detachably connected to the lower template to limit the sliding member.

9. The molding die according to claim 3, characterized in that: The input subassembly includes: An inserting member is embedded in the lower mold assembly, the lever member is movably arranged in the first direction and penetrates the inserting member, the inserting member is provided with an avoidance groove, and the avoidance groove is used to receive the pressing body to avoid the pressing body; A connecting piece is arranged on a side of the insert member facing the upper mold assembly and is detachably connected to the insert member. When the mold is closed, the connecting piece abuts against the upper mold assembly to participate in enclosing and forming the molding cavity.

10. The molding die according to claim 3, characterized in that: The upper mold assembly comprises: An upper mold plate, movably disposed above the lower mold assembly; A backhoe component corresponds to the receiving groove and is connected to a side of the upper mold plate facing the lower mold assembly. The backhoe component is used to be inserted into the receiving groove under the drive of the upper mold plate to drive the sliding body to slide.

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