Die with special-shaped core-pulling structure

Abstract

The utility model discloses a mould with a special-shaped core-pulling structure, the special-shaped core-pulling structure comprises a sliding block, a core, a fixed seat, a first connecting rod and a second connecting rod, and the fixed seat is fixedly connected with the sliding block; the first connecting rod and the second connecting rod are both assembled in the fixed seat and are respectively connected with the fixed seat in a sliding manner; the first connecting rod is hinged with the core, and the second connecting rod is hinged with the core; the fixed seat moves in the core pulling direction, the fixed seat drives the second connecting rod, and the second connecting rod drives the core to rotate anticlockwise, so that the core reverse buckling structure is separated from the product, and product tripping is completed; and after the rotation of the core is finished, the fixed seat simultaneously drives the first connecting rod and the second connecting rod to synchronously drive the core to move along the core pulling direction, so that the core is pulled out. By the adoption of the technical scheme, the situation that due to the fact that a gear structure is used, the core pulling force is too large in the core pulling process, and products are strained and damaged is avoided.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a mold with a special-shaped core-pulling structure. Background Art

[0002] To obtain the Figure 9 The special arc-shaped undercut product shown needs to be injection molded using a mold with a special arc-shaped core-pulling structure during the processing process.

[0003] However, the special arc-shaped core-pulling structure of this type of mold generally uses a gear rack to drive the arc-shaped core to complete the core pulling work; however, the products processed with this structure are often stretched and damaged due to excessive core pulling force, resulting in a low product qualification rate and increased production difficulty; and because the rack and gear must be assembled together, the mold structure is complex and the manufacturing and assembly are difficult and costly. In addition, because the rack is easy to break and crack, it causes calipers between the gears, making it impossible to pull the core normally, resulting in high mold maintenance costs and delays in production progress.

[0004] Therefore, how to improve the core pulling mechanism of the mold to make the mold structure simpler and more stable, so that the mold can be more stable and smooth during the core pulling process, while reducing the damage rate of the product and improving production efficiency is one of the technical problems that technical personnel in this field need to solve. Utility Model Content

[0005] In order to solve the technical problems existing in the prior art, the purpose of the utility model is to provide a mold with a special-shaped core-pulling structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A mold with a special-shaped core-pulling structure, comprising a mold frame and the special-shaped core-pulling structure, wherein the mold frame comprises a front template and a rear template; the special-shaped core-pulling structure is assembled between the front template and the rear template; the special-shaped core-pulling structure comprises a slider and an oblique rod, wherein the oblique rod is fixedly connected to the front template, the slider is slidably connected to the rear template, and the oblique rod is slidably connected to the slider;

[0008] The special-shaped core-pulling structure further includes a core, a fixed seat, a first connecting rod and a second connecting rod, wherein the fixed seat is fixedly connected to the slider; the first connecting rod and the second connecting rod are both assembled in the fixed seat and slidably connected to the fixed seat respectively; the first connecting rod is hinged to the core, and the second connecting rod is hinged to the core;

[0009] The fixed seat is displaced in the core-pulling direction, and the fixed seat drives the second connecting rod, and the second connecting rod drives the core to rotate counterclockwise, so that the core inverted structure is separated from the product, and the product is released; when the core rotation is completed, the fixed seat simultaneously drives the first connecting rod and the second connecting rod to synchronously drive the core to displace in the core-pulling direction, and the core is pulled out.

[0010] Further preferably, the fixing seat is provided with a first driving hole and a second driving hole, and the first driving hole and the second driving hole respectively penetrate the fixing seat along the mold opening direction.

[0011] Further preferably, the inner diameter of the first driving hole is larger than the inner diameter of the second driving hole.

[0012] Further preferably, the first connecting rod includes a first driving rod and a first driving column, the first driving rod is hinged to the core, the first driving column is fixedly connected to the first driving rod, and the first driving column passes through the first driving hole and is slidably connected to the fixed seat.

[0013] Further preferred: the second connecting rod includes a second driving rod, a second driving column and a third driving rod, the third driving rod is hinged to the core and the second driving rod respectively, the second driving column is fixedly connected to the second driving rod, the second driving column passes through the second driving hole, and is slidably connected to the fixed seat.

[0014] Further preferably, the core comprises a first limiting groove and a second limiting groove, and the first limiting groove and the second limiting groove are adjacently arranged at an edge of one side of the core close to the fixing seat.

[0015] Further preferably, the first driving rod extends into the first limiting groove and is rotatably connected to the core, and the third driving rod extends into the second limiting groove and is rotatably connected to the core.

[0016] Further preferably, the special-shaped core-pulling structure further includes a first elastic member and a second elastic member, the first elastic member is assembled in the slider and contacts the first driving rod; the second elastic member is assembled in the slider and contacts the second driving rod.

[0017] Further preferably, the first elastic member and the second elastic member are both springs.

[0018] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0019] The utility model adopts a two-stage pull rod structure, and utilizes the difference in inner diameters of the first driving hole and the second driving hole of the fixed seat to create a stroke difference between the first connecting rod and the second connecting rod during the core pulling process; during the core pulling process, the fixed seat first drives the second connecting rod away from the mold core and displaces in the core pulling direction, and at the same time the second connecting rod drives the core to rotate counterclockwise, so that the core inverted structure is separated from the product; when the core rotation is completed, the fixed seat simultaneously drives the first connecting rod and the second connecting rod away from the mold core and displaces in the core pulling direction until the core is completely separated from the product; the above technical solution avoids the use of a gear structure that causes excessive core pulling force during the core pulling process, resulting in strain and damage to the product, and because the utility model has a simple structure and stable core pulling, it can effectively avoid the core pulling failure, damage or damage to the product caused by broken teeth and stuck teeth of the gear mechanism during the core pulling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a mold with a special-shaped core-pulling structure described in an embodiment of the present utility model;

[0021] Figure 2 yes Figure 1 Schematic diagram along the AA section;

[0022] Figure 3 yes Figure 2 A partial enlarged view of a in the middle;

[0023] Figure 4 yes Figure 1 Schematic cross-section along BB;

[0024] Figure 5 yes Figure 1 Schematic cross-section along CC;

[0025] Figure 6 yes Figure 5 A partial enlarged view of middle b;

[0026] Figure 7 yes Figure 6 The structure shown is a schematic diagram of the structure in the core pulling working state 1;

[0027] Figure 8 yes Figure 6 The structure shown is a schematic diagram of the structure in the core pulling working state 2;

[0028] Figure 9 It is a schematic diagram of the three-dimensional structure of the product described in the embodiment of the utility model.

[0029] The symbols of the drawings in the above description are as follows:

[0030] 110, top plate; 120, front template;

[0031] 210, rear template; 220, square iron; 230, bottom plate;

[0032] 310, front mold core; 320, rear mold core;

[0033] 410, core; 420, first driving rod; 421, first driving column; 430, second driving rod; 431, second driving column; 440, third driving rod; 450, fixing seat; 460, slider; 470, inclined rod; 480, first elastic member; 490, second elastic member;

[0034] 500. Products. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are all based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element of the present invention must have a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0037] Example

[0038] like Figures 1 to 2 As shown, the utility model discloses a mold with a special-shaped core-pulling structure, which includes a mold frame, a mold core and the special-shaped core-pulling structure. The mold core and the special-shaped core-pulling structure are both assembled in the mold frame.

[0039] like Figures 1 to 2 As shown, the mold frame includes a top plate 110, a front template 120, a rear template 210, a square iron 220 and a bottom plate 230. The top plate 110 is fixedly assembled on the front template 120, and the top plate 110 is fixedly connected to the front template 120; the square iron 220 is fixedly assembled on the bottom plate 230, and the square iron 220 is fixedly connected to the bottom plate 230; the rear template 210 is fixedly assembled on the square iron 220 and fixedly connected to the square iron 220; the front template 120 is in contact with the rear template 210, and the special-shaped core-pulling structure and the mold core are respectively assembled between the front template 120 and the rear template 210, and the special-shaped core-pulling structure is slidably connected to the rear template 210, and the special-shaped core-pulling structure extends into the mold core and contacts with the product 500 in the mold core.

[0040] like Figures 2 to 3As shown, the front template 120 includes a front mold core accommodating groove and a front template accommodating groove, and the mold core accommodating groove and the template accommodating groove are adjacent to and connected to each other; the front mold core accommodating groove is a accommodating cavity, and the opening direction of the accommodating cavity is toward the rear template 210; the opening direction of the front template accommodating groove is toward the rear template 210.

[0041] like Figures 2 to 3 As shown, the rear mold plate 210 is provided with a rear mold core accommodating groove, which is a accommodating cavity, and the opening direction of the accommodating cavity is toward the front mold plate 120; the open end of the rear mold core accommodating groove contacts the open end of the front mold core accommodating groove; the rear mold plate 210 is also provided with a core pulling slide rail, which is a linear slide rail;

[0042] like Figures 2 to 3 As shown, the mold core includes a front mold core 310 and a rear mold core 320, the front mold core 310 is fixedly assembled in the front mold core accommodating groove, the front mold core 310 is provided with a front product accommodating groove, and the opening direction of the front product accommodating groove is toward the rear template 210; the rear mold core 320 is fixedly assembled in the rear mold core accommodating groove, the rear mold core 320 is provided with a rear product accommodating groove, and the opening direction of the rear product accommodating groove is toward the front template 120; the open end of the front product accommodating groove contacts the open end of the rear product accommodating groove, and together with the special-shaped core-pulling structure, forms a molding cavity for product molding.

[0043] like Figures 2 to 7 As shown, the special-shaped core-pulling structure includes a core 410, a driving part, a slider 460 and an inclined rod 470. The slider 460 is assembled on the core-pulling slide rail, the inclined rod 470 is fixedly connected to the front template 120, and is slidably connected to the slider 460. One end of the driving part is fixedly connected to the slider 460, and the other end of the driving part is hinged to the core 410 through a pin, so that the core 410 rotates with the pin as the center; the core 410 extends into the molding cavity for molding the product.

[0044] like Figures 2 to 3 As shown, the slider 460 includes a first positioning groove, a second positioning groove and a driving through hole. The first positioning groove and the second positioning groove are arranged in parallel in the core pulling direction in the slider 460, and the opening directions of the first positioning groove and the second positioning groove are both toward the mold core; the driving through hole passes through the slider 460 along the mold opening direction, one end of the oblique rod 470 is fixedly connected to the front mold plate 120, and the other end of the oblique rod 470 extends toward the rear mold through the driving through hole, and the oblique rod 470 is slidably connected to the slider 460;

[0045] When the inclined rod 470 is driven and displaced in the direction of mold opening away from the rear template 210, the inclined rod 470 drives the slider 460 to perform core-pulling displacement on the core-pulling slide rail in the direction away from the mold core, and the slider 460 drives the driving part to perform core-pulling displacement in the direction away from the mold core, and the driving part drives the core 410 to rotate and perform core-pulling displacement in the direction away from the mold core.

[0046] like Figure 4 As shown, the core 410 includes a first limiting groove and a second limiting groove, and the first limiting groove and the second limiting groove are adjacently arranged at the edge of one side of the core 410 close to the driving part; the first limiting groove is a groove with a cross-section similar to a "fan-shaped" along the core pulling direction, the opening direction of the groove is toward the driving part, and the bottom of the groove is an arc-shaped structure; the second limiting groove is a groove with a cross-section similar to a "fan-shaped" along the core pulling direction, the opening direction of the groove is toward the driving part, and the bottom of the groove is an arc-shaped structure; the opening end of the first limiting groove is adjacent to the opening end of the second limiting groove, and is in a straight line.

[0047] like Figures 4 to 8 As shown, the driving portion includes a fixed seat 450, a first connecting rod, a second connecting rod, a first elastic member 480 and a second elastic member 490; the fixed seat 450 is fixedly connected to the slider 460, the first connecting rod and the second connecting rod are respectively assembled in the fixed seat 450, and the first connecting rod and the second connecting rod are respectively slidably connected to the fixed seat 450; the first elastic member 480 is assembled in the first positioning groove of the slider 460 and contacts the first connecting rod, and the first connecting rod is hinged to the core 410; the second elastic member 490 is assembled in the second positioning groove and contacts the second connecting rod, and the second connecting rod is hinged to the core 410;

[0048] Specifically:

[0049] The fixing seat 450 includes a first connecting rod clearance hole, a second connecting rod clearance hole, a first driving hole and a second driving hole. The first connecting rod clearance hole and the second connecting rod clearance hole pass through the fixing seat 450 along the core pulling direction, and the first connecting rod clearance hole and the second connecting rod clearance hole are arranged in parallel.

[0050] Preferably: in the present invention, the cross-sections of the first connecting rod clearance hole and the second connecting rod clearance hole along the mold opening direction are both rectangular, and the cross-sections of the first connecting rod clearance hole and the second connecting rod clearance hole along the core pulling direction are both rectangular;

[0051] The first driving hole penetrates the fixing seat 450 along the mold opening direction, and is a through hole with a cross section along the core pulling direction that is similar to a "rectangular" shape, and the two short sides of the "rectangular" through hole are semicircular; the second driving hole penetrates the fixing seat 450 along the mold opening direction, and is a through hole with a cross section along the core pulling direction that is similar to a "rectangular" shape, and the two short sides of the "rectangular" through hole are semicircular;

[0052] It should be noted that the inner diameter of the first driving hole is larger than the inner diameter of the second driving hole, that is, the long side length of the "rectangular" cross-section of the first driving hole along the core pulling direction is larger than the long side length of the "rectangular" cross-section of the second driving hole along the core pulling direction;

[0053] The first connecting rod clearance hole is connected to the first driving hole, and the second connecting rod clearance hole is connected to the second driving hole.

[0054] like Figures 4 to 8 As shown, one end of the first elastic member 480 is assembled in the first positioning groove, and the other end of the first elastic member 480 extends into the first connecting rod clearance hole along the core pulling direction toward the core 410, and contacts the first connecting rod; one end of the second elastic member 490 is assembled in the second positioning groove, and the other end of the second elastic member 490 extends into the second connecting rod clearance hole along the core pulling direction toward the core 410, and contacts the second connecting rod: Preferably: in the present utility model, the first elastic member 480 and the second elastic member 490 are both springs but not limited to springs.

[0055] like Figures 4 to 8 As shown, the second connecting rod includes a second driving rod 430, a second driving column 431 and a third driving rod 440. The second driving rod 430 is assembled in the second connecting rod clearance hole and contacts the second elastic member 490. The second driving column 431 is fixedly connected to the second driving rod 430. The second driving column 431 passes through the second driving hole and is slidably connected to the fixing seat 450. The third driving rod 440 is hinged to the core 410 and the second driving rod 430 respectively.

[0056] Specifically: the end of the second driving rod 430 close to the core 410 is hinged to the end of the third driving rod 440 away from the core 410, and the end of the second driving rod 430 away from the core 410 extends into the second connecting rod clearance hole in the direction of core pulling away from the core 410 and contacts the second elastic member 490; the second driving rod 430 displaces in the second connecting rod clearance hole in the direction of core pulling; the second driving column 431 passes through the second driving hole in the mold opening direction, extends toward the rear mold plate 210, and passes through the second driving rod 430, and the second driving column 431 is fixedly connected to the second driving rod 430, so that the displacement of the second driving column 431 in the core pulling direction is limited in the second driving hole, and then the second connecting rod is slidably connected to the fixing seat 450;

[0057] Preferably: the second driving rod 430 is a connecting rod with a cross-section similar to a "rectangle" along the core pulling direction; the third driving rod 440 is a connecting rod with a cross-section similar to a "rectangle" along the core pulling direction, and the short sides of the "rectangular" connecting rod are both semicircular; the curvature of the semicircle matches the curvature of the arc structure at the bottom of the second limiting groove; the end of the third driving rod 440 close to the core 410 extends into the second limiting groove and contacts the arc structure at the bottom of the second limiting groove; the pin passes through the center of the semicircle of the third driving rod 440 close to one end of the core 410 and is fixedly connected to the second limiting groove, so that the third driving rod 440 rotates relative to the core 410 in the second limiting groove with the pin as the center; the end of the third driving rod 440 away from the core 410 extends toward the fixed seat 450, and extends into the second connecting rod clearance hole and is hinged to the second driving rod 430.

[0058] When the slider 460 is driven and moves toward the core-pulling direction away from the mold core on the core-pulling slide rail, the slider 460 drives the fixed seat 450, and the fixed seat 450 drives the second driving hole to move toward the core-pulling direction away from the mold core, so that the second driving column 431 is in the second driving hole along the core-pulling direction, and generates relative displacement with the second driving hole until the displacement of the second driving column 431 in the second driving hole is limited, and the displacement of the second driving column 431 in the second driving hole ends; at the same time, the second driving The hole drives the second driving column 431, and the second driving column 431 drives the second driving rod 430, and together they move away from the mold core to perform core-pulling displacement; the second driving rod 430 drives the third driving rod 440, and rotates clockwise with the hinge point of the second driving rod 430 and the third driving rod 440 as the center of the circle, so that the third driving rod 440 drives the core 410, and rotates counterclockwise with the hinge point of the first driving rod 420 and the core 410 as the center of the circle, thereby causing the core to be inverted and gradually separated from the product 500:

[0059] like Figures 4 to 8 As shown, the first connecting rod includes a first driving rod 420 and a first driving column 421. The first driving rod 420 is assembled in the first connecting rod clearance hole and contacts the first elastic member 480. The first driving column 421 is fixedly connected to the first driving rod 420. The first driving column 421 passes through the first driving hole and is slidably connected to the fixing seat 450.

[0060] Specifically: one end of the first driving rod 420 close to the core 410 is hinged to the core 410, and one end of the first driving rod 420 away from the core 410 extends into the first connecting rod clearance hole along the core pulling direction in the direction away from the core 410, and contacts the first elastic member 480; the first driving rod 420 displaces along the core pulling direction in the first connecting rod clearance hole; the first driving column 421 passes through the first driving hole along the mold opening direction, extends toward the rear mold plate 210, and passes through the first driving rod 420; the first driving column 421 is fixedly connected to the first driving rod 420, so that the displacement of the first driving column 421 in the core pulling direction is limited in the first driving hole, and then the first connecting rod is slidably connected to the fixing seat 450;

[0061] Preferably, the first driving rod 420 is a connecting rod having a "rectangular" cross-section along the core-pulling direction, and the end of the "rectangular" connecting rod close to the core 410 is semicircular, and the curvature of the semicircle matches the curvature of the arc structure at the bottom of the first limiting groove; the end of the first driving rod 420 close to the core 410 extends into the first limiting groove and contacts the arc structure at the bottom of the first limiting groove; a pin passes through the center of the semicircle of the first driving rod 420 close to the end of the core 410 and is fixedly connected to the first limiting groove, so that the first driving rod 420 is hinged to the core 410; so that the first driving rod 420 rotates relative to the core 410 in the first limiting groove with the pin as the center;

[0062] When the slider 460 is driven and performs a core-pulling displacement on the core-pulling slide rail in the direction away from the mold core, the slider 460 drives the fixed seat 450, and the fixed seat 450 drives the first driving hole to perform a core-pulling displacement in the direction away from the mold core, so that the first driving column 421 is in the first driving hole along the core-pulling direction, and generates a relative displacement with the first driving hole until the displacement of the first driving column 421 in the first driving hole is restricted, and the displacement of the first driving column 421 in the first driving hole ends; at the same time, the first driving hole drives the first driving column 421, the first driving column 421 drives the first driving rod 420, and the first driving rod 420 drives the core 410 to perform a core-pulling displacement in the direction away from the mold core.

[0063] In summary, the core pulling working principle of a mold with a special-shaped core pulling structure is as follows:

[0064] like Figures 6 to 8 As shown, in the mold opening state, the inclined rod 470 is driven to move in the mold opening direction away from the rear template 210; the inclined rod 470 drives the slider 460 to perform core-pulling displacement on the core-pulling slide rail in the direction away from the mold core; the slider 460 drives the fixed seat 450, and the fixed seat 450 drives the first drive hole and the second drive hole to perform core-pulling displacement in the direction away from the mold core; at this time, the first drive column 421 is in the first drive hole, and generates relative displacement with the first drive hole in the core-pulling direction; the second drive column 431 is in the second drive hole, and generates relative displacement with the second drive hole in the core-pulling direction;

[0065] like Figure 7 As shown, when the displacement of the second driving column 431 in the second driving hole is restricted (that is, when the displacement of the second driving column 431 in the second driving hole is Figure 7When the second drive column 431 is in the position shown in the figure, the displacement of the second drive column 431 in the second drive hole ends; at this time, the second drive hole drives the second drive column 431, and the second drive column 431 drives the second drive rod 430, so that the second drive hole, the second drive column 431, the second drive rod 430 and the fixed seat 450 are synchronously displaced in the direction away from the mold core, and the second drive rod 430 drives the third drive rod 440, so that the third drive rod 440 rotates clockwise in the second limiting groove with the hinge point between the second drive rod 430 and the third drive rod 440 as the center of the circle. , so that the third driving rod 440 drives the core 410, and the core 410 rotates counterclockwise with the hinge point between the first driving rod 420 and the core 410 as the center, thereby causing the core inverted structure to gradually separate from the product 500; when the rotation of the third driving rod 440 in the second limiting groove is restricted, the rotation of the core 410 is completed, and the core inverted structure is completely separated from the product 500, so that the product 500 is released, so that the product 500 can be completely and smoothly demolded; at this time, the fixing seat 450 continues to drive the first driving hole to perform core-pulling displacement in the direction away from the mold core;

[0066] like Figure 8 As shown, until the displacement of the first driving column 421 in the first driving hole is restricted (that is, when the displacement of the first driving column 421 in the first driving hole is Figure 8 , the first driving hole drives the first driving column 421, and the first driving column 421 drives the first driving rod 420 and the core 410, so that the first driving hole, the first driving column 421, the first driving rod 420, the core 410, and the fixing seat 450 are displaced in the direction away from the mold core until the core 410 is completely separated from the product 500, thereby completing the core pulling work.

[0067] like Figure 1-9 As shown, the demoulding steps of the product 500 of the mold with a special-shaped core-pulling structure are as follows:

[0068] Step 1: Open the mold:

[0069] When the mold completes injection molding and needs to be opened, the top plate 110, the front template 120, the front mold core 310 and the diagonal rod 470 are driven to move in the direction away from the rear template 210 to perform mold opening displacement; specifically: the top plate 110 is driven to drive the front template 120 and the front mold core 310 away from the rear template 210 and move in the mold opening direction, and the front template 120 drives the diagonal rod 470 to move away from the rear template 210 and move in the mold opening direction.

[0070] Step 2: Core pulling:

[0071] The inclined rod 470 drives the slider 460, and the slider 460 drives the driving part and the core 410 to move away from the mold core and along the core pulling direction, and the driving part drives the core 410 to rotate, so that the core 410 rotates counterclockwise. When the core inverted structure is completely separated from the product 500, the rotation of the core 410 ends, and the driving part continues to drive the core 410 to move away from the mold core and along the core pulling direction, thereby completing the core pulling work.

[0072] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A mold with a special-shaped core-pulling structure, comprising a mold frame and the special-shaped core-pulling structure, wherein the mold frame comprises a front template and a rear template; the special-shaped core-pulling structure is assembled between the front template and the rear template; the special-shaped core-pulling structure comprises a slider and an inclined rod, wherein the inclined rod is fixedly connected to the front template, the slider is slidably connected to the rear template, and the inclined rod is slidably connected to the slider, characterized in that: The special-shaped core-pulling structure further includes a core, a fixed seat, a first connecting rod and a second connecting rod, wherein the fixed seat is fixedly connected to the slider; the first connecting rod and the second connecting rod are both assembled in the fixed seat and slidably connected to the fixed seat respectively; the first connecting rod is hinged to the core, and the second connecting rod is hinged to the core; The fixed seat is displaced in the core-pulling direction, and the fixed seat drives the second connecting rod, and the second connecting rod drives the core to rotate counterclockwise, so that the core inverted structure is separated from the product, and the product is released; when the core rotation is completed, the fixed seat simultaneously drives the first connecting rod and the second connecting rod to synchronously drive the core to displace in the core-pulling direction, and the core is pulled out.

2. The mold with a special-shaped core-pulling structure according to claim 1, characterized in that: The fixing seat is provided with a first driving hole and a second driving hole, and the first driving hole and the second driving hole respectively penetrate the fixing seat along the mold opening direction.

3. The mold with a special-shaped core-pulling structure according to claim 2, characterized in that: An inner diameter of the first driving hole is larger than an inner diameter of the second driving hole.

4. The mold with a special-shaped core-pulling structure according to claim 3, characterized in that: The first connecting rod includes a first driving rod and a first driving column, the first driving rod is hinged to the core, the first driving column is fixedly connected to the first driving rod, and the first driving column passes through the first driving hole and is slidably connected to the fixing seat.

5. The mold with a special-shaped core-pulling structure according to claim 4, characterized in that: The second connecting rod includes a second driving rod, a second driving column and a third driving rod, the third driving rod is hinged to the core and the second driving rod respectively, the second driving column is fixedly connected to the second driving rod, the second driving column passes through the second driving hole and is slidably connected to the fixed seat.

6. The mold with a special-shaped core-pulling structure according to claim 5, characterized in that: The core comprises a first limiting groove and a second limiting groove, wherein the first limiting groove and the second limiting groove are adjacently arranged at an edge of one side of the core close to the fixing seat.

7. The mold with a special-shaped core-pulling structure according to claim 6, characterized in that: The first driving rod extends into the first limiting groove and is rotatably connected to the core, and the third driving rod extends into the second limiting groove and is rotatably connected to the core.

8. The mold with a special-shaped core-pulling structure according to claim 5, characterized in that: The special-shaped core-pulling structure further includes a first elastic member and a second elastic member. The first elastic member is assembled in the slider and contacts the first driving rod; the second elastic member is assembled in the slider and contacts the second driving rod.

9. The mold with a special-shaped core-pulling structure according to claim 8, characterized in that: The first elastic member and the second elastic member are both springs.

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