Demolding pin, demolding mechanism and mold

Abstract

The utility model relates to the technical field of injection molds, and discloses a demolding pin tool, a demolding mechanism and a mold, the demolding pin tool comprises a first straight body section, a second straight body section and an inclined section, wherein the first straight section extends in the Z direction; the second straight section and the first straight section extend in the same direction; the thickness of the inclined section is smaller than that of the first straight section, and a forced face is arranged at one end of the inclined section in the first direction. The ejection movement direction of the demolding pin tool of the structure is almost vertically upward, and the demolding pin tool only rotates at a small angle in the final stage, so that the influence of bending deformation caused by the ejection pressing angle of the demolding pin tool is very small. Therefore, when the thickness of the demolding pin tool and the thickness of the inclined section are reduced in the first direction, the demolding pin tool can still meet the strength requirement, the demolding pin tool can be effectively prevented from being bent, deformed and blocked in the moving process, the probability of insertion burning and breakage of the demolding pin tool and the pin groove is reduced, and the continuous output rate of the mold can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a demoulding pin, a demoulding mechanism and a mold. Background Art

[0002] like Figures 1 to 3 As shown, some products adopt conventional oblique pins 1' for demoulding at the inner side buckle position. The space for demoulding is insufficient, and when the oblique pin 1' is ejected, the oblique pin and the product interfere with each other. To solve this problem, the thickness of the oblique pin can be designed to be thin to meet the required retreat distance when the oblique pin is ejected. However, when demoulding, the conventional oblique pins Figures 4 to 7 As shown in the figure, the rotation and ascending motion of the oblique pin are synchronized, and its demoulding motion trajectory is a continuous two-way synchronous motion. There is a continuous torque during its operation. Therefore, if the thickness of the conventional oblique pin is designed to be too thin, the oblique pin is easy to bend, deform and get stuck during the movement, resulting in a low continuous output rate of the mold and poor production efficiency. At the same time, the probability of the oblique pin and the oblique pin hole being burned and the oblique pin being broken after being made thin is too high, and the cost of forced shutdown and maintenance of the mold is too high. Therefore, the mass production of the oblique pin designed to be too thin is too poor. Utility Model Content

[0003] In view of this, the utility model provides a demoulding pin, a demoulding mechanism and a mold to solve the problems in the prior art that the oblique pin interferes with the product during demoulding and the oblique pin is easily bent, deformed, stuck, broken and burned in the demoulding process after being made thin.

[0004] In a first aspect, the utility model provides a demoulding pin, comprising:

[0005] The first straight section extends along the Z direction;

[0006] A second straight body segment extending in the same direction as the first straight body segment;

[0007] an inclined section, which is inclined relative to the first straight section, and a direction perpendicular to the Z direction is a first direction. Along the first direction, the thickness of the inclined section is less than the thickness of the first straight section, and one end of the inclined section along the first direction is provided with a forced surface; two ends of the inclined section are respectively connected to the first straight section and the second straight section;

[0008] The demoulding pin is suitable for being inserted into the pin groove of the inner mold. During demoulding, the demoulding pin is lifted vertically upward so that the second straight section and part of the inclined section extend out of the pin groove. The inclined section continues to move upward, and the forced surface is squeezed by the groove wall of the pin groove, causing the demoulding pin to fall over and rotate in the demoulding direction.

[0009] Beneficial effect: When the demoulding pin of this structure is in use, the upper part of the demoulding pin is inserted into the pin groove of the inner film, and the demoulding pin is lifted vertically upward. The demoulding pin first moves vertically upward for a distance so that the second straight section and part of the inclined section are exposed in the pin groove. The inclined section continues to move upward, and the forced surface is squeezed by the groove wall of the pin groove, causing the demoulding pin to fall and rotate in the demoulding direction. The demoulding pin is synchronously moved upward and rotated to the highest position to realize the demoulding of the inner side of the product, so that the demoulding distance meets the lateral demoulding safety distance to avoid interference. The thickness of the inclined section is less than t1 and less than the thickness t of the first straight section, so that the inclined section is separated from the inner wall of the open end of the pin groove, and the forced surface is squeezed by the groove wall of the pin groove, causing the demoulding pin to fall and rotate in the demoulding direction, and the inclined section rotates in the pin groove. The ejection movement direction of the demoulding pin of this structure is almost vertically upward, and only a small angle rotation is performed in the final stage, so the demoulding pin of this application is very little affected by the bending deformation caused by the ejection pressure angle. Therefore, when the thickness of the demolding pin and the thickness of the inclined section are reduced along the first direction, the demolding pin can still meet the strength requirements, and can effectively prevent the demolding pin from bending, deforming and getting stuck during movement, reduce the probability of burning and breakage between the demolding pin and the pin groove, and improve the continuous output rate of the mold.

[0010] In an optional embodiment, the cross-section of the demolding pin perpendicular to its extension direction is rectangular, the direction perpendicular to the first direction is the second direction, and along the second direction, the thickness of the first straight section, the second straight section and the inclined section are the same.

[0011] Beneficial effect: along the second direction, the thicknesses of the first straight section, the second straight section and the inclined section are the same, and the strength of the demoulding pin at various locations can be ensured without affecting the demoulding distance.

[0012] In an optional embodiment, a guide section is provided at one end of the second straight section away from the inclined section, and the guide section has a first guide surface on the side facing the demolding direction of the demolding pin, and the first guide surface is inclined toward the demolding direction of the demolding pin; a second guide surface is provided on the pin groove, and during the movement and resetting process of the demolding pin, the first guide surface slides along the second guide surface to guide the guide section into the pin groove.

[0013] Beneficial effect: During the movement and resetting of the demoulding pin, the first guide return surface slides along the second guide return surface to guide the guide section into the pin groove, thereby preventing the demoulding pin from scratching the mouth of the pin groove during the pulling back process.

[0014] In an optional embodiment, an avoidance cut angle is provided on an end surface of one end of the first straight section away from the inclined section.

[0015] Beneficial effect: During the rotation of the demoulding pin, the corner cutting is avoided to prevent the bottom end surface of the demoulding pin from interfering with the top plate, thereby ensuring the normal rotation and demoulding of the demoulding pin.

[0016] In an optional embodiment, a mounting hole is provided at one end of the first straight section away from the inclined section, and the mounting hole is suitable for mounting a pin.

[0017] In an optional embodiment, along the first direction, the thickness of the first straight section is 3.4 mm-3.7 mm, and the thickness of the inclined section is 2.5 mm-2.9 mm;

[0018] And / or, the inclination angle of the inclined section relative to the first straight section is 2°-6°.

[0019] In a second aspect, the utility model further provides a demoulding mechanism, comprising:

[0020] Inner mold, with pin slots inside;

[0021] The demoulding pin described in any one of the above is slidably arranged in the pin groove. The demoulding mechanism includes the demoulding pin, which has the same technical effect as the demoulding pin and is not described in detail here.

[0022] In an optional embodiment, the bottom opening of the pin groove is larger than the upper opening thereof, and the groove wall of the pin groove includes a guide surface and a pressing surface, the guide surface extends vertically, and the pressing surface is inclined toward the demolding direction.

[0023] In an optional embodiment, a second guide return surface is provided on the top of the guide surface, and the second guide return surface is inclined toward the demoulding direction.

[0024] In a third aspect, the utility model further provides a mold, comprising:

[0025] roof;

[0026] In any one of the above-mentioned demoulding mechanisms, one end of the first straight section away from the inclined section is rotatably disposed on the top plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of demoulding using conventional oblique pins as described in the background technology of the utility model;

[0029] Figure 2It is a schematic diagram of the interference between the oblique pin and the product when demoulding with conventional oblique pins as described in the background technology of the utility model;

[0030] Figure 3 for Figure 2 A partial enlarged view of the middle A part;

[0031] Figure 4 This is a schematic diagram of a conventional oblique pin described in the background technology of the present utility model;

[0032] Figure 5 This is a schematic diagram of a conventional oblique pin described in the background technology of the present utility model;

[0033] Figure 6 It is a schematic diagram of the demoulding trajectory of the conventional oblique pin used in the background technology of the present utility model;

[0034] Figure 7 This is the covering dimension diagram when conventional oblique pin ejection is used as described in the background technology of the utility model;

[0035] Figure 8 A schematic diagram of a demoulding pin according to an embodiment of the utility model from a first angle;

[0036] Fig. 9 A second angle schematic diagram of a demoulding pin according to an embodiment of the utility model;

[0037] Fig.10 A schematic diagram of the three-dimensional structure of a demoulding pin according to an embodiment of the utility model;

[0038] Fig.11 A comparison diagram of a demoulding pin according to an embodiment of the utility model and a conventional oblique pin;

[0039] Fig.12 A schematic diagram of a demoulding pin of a demoulding mechanism according to an embodiment of the utility model when the demoulding pin is located in a pin groove;

[0040] Fig.13 It is a schematic diagram of a demoulding pin of a demoulding mechanism according to an embodiment of the utility model when it is in an ejection state;

[0041] Fig.14 for Fig.13 A partial enlarged view of part B in the middle;

[0042] Fig.15 A demoulding trajectory diagram of a demoulding pin according to an embodiment of the utility model;

[0043] Fig.16 This is a diagram of the covering dimensions of the demoulding pin of the embodiment of the utility model when it is ejected;

[0044] Fig.17A schematic diagram of an inner film in a demoulding mechanism according to an embodiment of the utility model;

[0045] Fig.18 for Fig.17 A partial enlarged view of the middle C part;

[0046] Fig.19 A top view of an assembled demoulding pin according to an embodiment of the utility model;

[0047] Fig. 20 It is a schematic diagram of the cooperation between a demoulding pin and a first top plate and a second top plate in a mold of an embodiment of the utility model;

[0048] Fig.21 This is a top view of a mold and a product according to an embodiment of the utility model.

[0049] Description of reference numerals:

[0050] 1', oblique pin;

[0051] 1. Demolding pin; 11. First straight section; 111. Avoidance cutting angle; 112. Mounting hole; 12. Second straight section; 121. First supporting surface; 13. Inclined section; 131. Forced surface; 14. Guide section; 141. First return guide surface; 2. Inner mold; 21. Pin groove; 211. Guide surface; 212. Forced surface; 213. Second return guide surface; 214. Second supporting surface; 3. First top plate; 4. Second top plate; 5. Template; 6. Pin shaft; 7. Product. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0053] like Figures 1 to 7As shown, some products 7 are demolded by conventional bevel pins 1' at the inner buckle position. There is insufficient space for the bevel pin to retreat and demold. When the bevel pin 1' is ejected and demolded, there is interference between the bevel pin and the product 7. When the bevel pin is ejected and demolded, the overlapping interference distance with the product 7 is a. The thickness of the bevel pin at all points along the length direction is the same and is t'. Since the demolding movement trajectory of the bevel pin is a continuous two-way synchronous movement when demolding, if the bevel pin is made thin to meet the retreat distance when demolding the product 7, it is easy to bend, deform and get stuck during movement. After being made thin, the probability of the bevel pin and the bevel pin hole being burned and the bevel pin being broken is too high, and the cost of forced mold shutdown and maintenance is too high, resulting in poor mass production of bevel pins with too thin thickness design.

[0054] Combine the following Figures 8 to 21 , describing an embodiment of the utility model.

[0055] According to an embodiment of the present utility model, on one hand, a demoulding pin 1 is provided, comprising a first straight section 11 , a second straight section 12 and an inclined section 13 .

[0056] Among them, the first straight body section 11 extends along the Z direction; the second straight body section 12 extends in the same direction as the first straight body section 11; the inclined section 13 is inclined relative to the first straight body section 11, and the direction perpendicular to the Z direction is the first direction. Along the first direction, the thickness of the inclined section 13 is less than the thickness of the first straight body section 11, and one end of the inclined section 13 along the first direction is provided with a forced surface 131; the two ends of the inclined section 13 are respectively connected to the first straight body section 11 and the second straight body section 12; the demolding pin 1 is suitable for being inserted into the pin groove 21 of the inner mold 2. During demolding, the demolding pin 1 is lifted vertically upward so that the second straight body section 12 and part of the inclined section 13 extend out of the pin groove 21, and the inclined section 13 continues to move upward, and the forced surface 131 is squeezed by the groove wall of the pin groove 21, so that the demolding pin 1 falls over and rotates toward the demolding direction.

[0057] It should be noted that the first direction is the horizontal direction within the plane covered by the demoulding pin 1 during rotation, and the demoulding distance is restricted by the thickness of the demoulding pin 1 along the first direction.

[0058] When the demoulding pin 1 of this structure is used, the upper part of the demoulding pin 1 is inserted into the pin groove 21 of the inner film. Fig.15As shown, the demoulding pin 1 is lifted vertically upward, and the demoulding pin 1 first moves vertically upward for a distance, so that the second straight body section 12 and part of the inclined section 13 are exposed in the pin groove 21, and the inclined section 13 continues to move upward, and the forced surface 131 is squeezed by the groove wall of the pin groove 21, so that the demoulding pin 1 is tilted and rotated in the demoulding direction, and the demoulding pin 1 is synchronously moved upward and rotated to the highest position to realize the inner buckle demoulding of the product 7, so that the demoulding distance meets the lateral demoulding safety distance to avoid interference. The thickness of the inclined section 13 is less than t1 and less than the thickness t of the first straight body section 11, so that the inclined section 13 is separated from the inner wall of the opening end of the pin groove 21, and the forced surface 131 is squeezed by the groove wall of the pin groove 21, so that the demoulding pin 1 is tilted and rotated in the demoulding direction, and the inclined section 13 rotates in the pin groove 21. The ejection movement direction of the demoulding pin 1 of this structure is almost vertically upward, and only a small angle rotation is performed in the final stage, so the demoulding pin 1 of this application is very little affected by the bending deformation caused by the ejection pressure angle. Therefore, when the thickness of the demoulding pin 1 and the thickness of the inclined section 13 are reduced along the first direction, the demoulding pin 1 can still meet the strength requirements, and can effectively prevent the demoulding pin 1 from bending and deforming and getting stuck during the movement, reduce the probability of the demoulding pin 1 and the pin groove 21 being burned and broken, and can improve the continuous output rate of the mold.

[0059] like Figure 8 As shown, due to the provision of the inclined section 13, the left end surface of the first straight section 11 along the first direction is not in the same plane with the left end surface of the second straight section 12, and the right end surface of the first straight section 11 along the first direction is not in the same plane with the right end surface of the second straight section 12.

[0060] Optionally, in some embodiments, along the first direction, the thickness of the first straight section 11 and the second straight section 12 are the same.

[0061] Since the demoulding distance is restricted by the thickness of the demoulding pin 1 along the first direction, Figures 8 to 10 As shown, the cross-section of the demolding pin 1 perpendicular to its extension direction (i.e., Z direction) is rectangular, and the direction perpendicular to the first direction is the second direction. Along the second direction, the thickness of the first straight section 11, the second straight section 12 and the inclined section 13 are the same, and the strength of the demolding pin 1 at various locations can be guaranteed without affecting the demolding distance.

[0062] like Figure 8 As shown, a guide section 14 is provided at one end of the second straight section 12 away from the inclined section 13, and a first guide surface 141 is provided on the side of the guide section 14 facing the demolding direction of the demolding pin 1, and the first guide surface 141 is inclined toward the demolding direction of the demolding pin 1; a second guide surface 213 is provided on the pin groove 21, and during the movement and resetting process of the demolding pin 1, the first guide surface 141 slides along the second guide surface 213 to guide the guide section into the pin groove 21 to prevent the mouth of the pin groove 21 from being scratched during the pulling back process of the demolding pin 1.

[0063] like Figure 8 and Fig.13 As shown, an avoidance cut angle 111 is provided on the end surface of the first straight section 11 away from the inclined section 13. During the upward movement of the demoulding pin 1, its forced surface 131 is squeezed by the groove wall of the pin groove 21 and falls down and rotates toward the demoulding direction. The lower part of the demoulding pin 1 is suitable for being rotatably connected to the top plate of the mold. During the rotation of the demoulding pin 1, the avoidance cut angle 111 prevents the bottom end surface of the demoulding pin 1 from interfering with the top plate, thereby ensuring the normal rotation and demoulding of the demoulding pin 1.

[0064] like Figure 8 As shown, along the first direction, the avoidance cut corner 111 is arranged on the left side of the lower end surface of the first straight section 11. The bottom surface of the demoulding pin 1 at the avoidance cut corner 111 is inclined upward.

[0065] like Figures 8 to 10 As shown, a mounting hole 112 is provided at one end of the first straight section 11 away from the inclined section 13, and the mounting hole 112 is suitable for mounting a pin shaft 6, and the pin shaft 6 is suitable for being rotatably mounted in the pin slot of the top plate, and the pin shaft 6 is fixed on the demoulding pin 1. When the demoulding pin 1 is forced to rotate, the axis of the pin shaft 6 at its bottom is used as the rotation center.

[0066] Optionally, in some embodiments, along the first direction, the thickness t of the first straight section 11 is 3.4 mm-3.7 mm, the thickness t1 of the inclined section 13 is 2.5 mm-2.9 mm, and the inclination angle of the inclined section 13 relative to the first straight section 11 is 2°-6°.

[0067] Optionally, in some embodiments, the thickness t of the first straight section 11 is 3.5 mm, and the thickness t1 of the inclined section 13 is 2.8 mm.

[0068] In some embodiments, the inclination angle of the inclined section 13 relative to the first straight section 11 is 4°.

[0069] Optionally, in some embodiments, Fig. 9 As shown, the thickness of the demoulding pin 1 along the second direction is t2, and optionally, t2 is 4.6 mm.

[0070] like Fig.11 As shown, the conventional oblique pin is in the shape of a long strip, and in the reset state, the oblique pin is in an inclined state, and the inclination angle of the oblique pin is 4°. In the reset state, the first straight body section 11 and the second straight body section 12 of the demoulding pin 1 of the present application extend vertically.

[0071] Optionally, the inclination angle of the second return surface 213 is 6°.

[0072] like Figure 7As shown in the figure, the conventional oblique pin is in an inclined state as a whole, and the required size in the demoulding direction is large, so the conventional oblique pin structure design has many restrictions, and it is easy to cause the problem of interference in the demoulding action of the inner buckle position. Fig.16 As shown, the demoulding pin 1 of the present application comprises a first straight section 11, a second straight section 12 and an inclined section 13, and only the inclined section 13 is in an inclined state, so the required dimension of the demoulding pin 1 in the demoulding direction is relatively small.

[0073] like Figure 7 and Fig.16 As shown, within the same ejection distance, the required dimension of the conventional oblique pin in the demolding direction is c, and the required dimension of the demolding pin 1 of the present application in the demolding direction is d, c is 6.2 mm, and d is 5.6 mm.

[0074] like Fig.14 As shown, under the same design space, when the conventional oblique pin cannot be demolded normally, the demolding distance b of the demolding pin 1 of the present application after demolding is 0.5mm, and there is no dimensional interference with the product 7 during demolding, and the demolding distance meets the design standard of the lateral demolding safety distance. The demolding pin 1 is highly practical, safe and reliable in operation, simple to manufacture, and quick to assemble parts and components, which can reduce the overall manufacturing cost and maintenance cost of the mold.

[0075] According to an embodiment of the utility model, on the other hand, a demoulding mechanism is provided, including an inner mold 2 and the above-mentioned demoulding pin 1, wherein a pin groove 21 is provided inside the inner mold 2; and the demoulding pin 1 is slidably disposed in the pin groove 21.

[0076] like Figures 16 to 18 As shown, the bottom opening of the pin groove 21 is larger than the upper opening thereof, and the groove wall of the pin groove 21 includes a guide surface 211 and a forced surface 212, wherein the guide surface 211 extends vertically and the forced surface 212 is inclined toward the demoulding direction. When the demoulding pin 1 is in a vertically ascending state, the forced surface 131 is spaced apart from the forced surface 212, and when the demoulding pin 1 is ascended until the forced surface 131 contacts the forced surface 212 at the upper part of the pin groove 21, the demoulding pin 1 continues to ascend, and the forced surface 131 is pressed by the forced surface to make the demoulding pin 1 rotate toward the demoulding direction.

[0077] like Fig.18 As shown, in some embodiments, a second guide surface 213 is provided on the top of the guide surface 211, and the second guide surface 213 is inclined toward the demoulding direction. During the movement and reset process of the demoulding pin 1, the first guide surface 141 slides along the second guide surface 213 to guide the guide section into the pin groove 21, so as to prevent the demoulding pin 1 from scratching the mouth of the pin groove 21 during the pull-back process.

[0078] like Figure 8 As shown, the side of the second straight body section 12 facing the demoulding direction is the first supporting surface 121. Fig.17 and Fig.18 As shown, the upper part of the guide surface 211 of the pin groove 21 is the second supporting surface 214, and the second supporting surface 214 is vertically arranged. When the demolding pin 1 is pulled back to its original position, the first supporting surface 121 cooperates with the second supporting surface 214 to straighten and reset the demolding pin 1.

[0079] According to an embodiment of the present invention, on the other hand, a mold is provided, including a top plate and the above-mentioned demoulding mechanism, wherein one end of the first straight section 11 away from the inclined section 13 is rotatably disposed on the top plate.

[0080] like Fig.12 , Fig.13 , Fig.19 and Fig. 20 As shown, the mold further includes a template 5, the inner mold 2 is arranged on the template 5, the top plate includes a first top plate 3 and a second top plate 4, the first top plate 3 is arranged on the top surface of the second top plate 4, the first top plate 3 is provided with a latch groove, and the pin shaft 6 is rotatably inserted in the latch groove. The demoulding pin 1 is driven to rise and fall by driving the first top plate 3 to rise and fall.

[0081] like Fig.12 , Fig.13 and Fig.15 As shown, during demoulding, the first top plate 3 rises and drives the demoulding pin 1 to move upward, and the demoulding pin 1 slides upward along the pin groove 21 until the inclined section 13 partially exposes the pin groove 21, and the first top plate 3 continues to drive the demoulding pin 1 to move upward, and the forced surface 131 is squeezed by the forced surface 212 of the pin groove 21, so that the demoulding pin 1 is turned and rotated toward the demoulding direction, and the demoulding pin 1 is synchronously moved upward and rotated to the highest position to realize the inner buckle demoulding of the product 7, so that the demoulding distance meets the lateral demoulding safety distance to avoid interference. After demoulding, the first top plate 3 descends, driving the demoulding pin 1 to move downward, and the first guide surface 141 slides into the pin groove 21. The first guide surface 141 cooperates with the second guide surface 213 to make the demoulding pin 1 gradually slide back into the pin groove 21, and the first supporting surface 121 slides along the second supporting surface 214 to straighten and reset the demoulding pin 1.

[0082] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A demoulding pin, characterized in that: include: A first straight section (11) extending along the Z direction; A second straight body section (12) extending in the same direction as the first straight body section (11); The inclined section (13) is arranged obliquely relative to the first straight section (11), the direction perpendicular to the Z direction is a first direction, along the first direction, the thickness of the inclined section (13) is less than the thickness of the first straight section (11), and a forced surface (131) is provided at one end of the inclined section (13) along the first direction; the two ends of the inclined section (13) are respectively connected to the first straight section (11) and the second straight section (12); The demoulding pin (1) is suitable for being inserted into the pin groove (21) of the inner mold (2). During demoulding, the demoulding pin (1) is lifted vertically upward so that the second straight section (12) and part of the inclined section (13) extend out of the pin groove (21). The inclined section (13) continues to move upward, and the forced surface (131) is squeezed by the groove wall of the pin groove (21), so that the demoulding pin (1) falls over and rotates in the demoulding direction.

2. The demoulding pin according to claim 1, characterized in that: The cross section of the demoulding pin (1) perpendicular to its extension direction is rectangular, the direction perpendicular to the first direction is the second direction, and along the second direction, the first straight section (11), the second straight section (12) and the inclined section (13) have the same thickness.

3. The demoulding pin according to claim 1 or 2, characterized in that: A guide section (14) is provided at one end of the second straight section (12) away from the inclined section (13); the guide section (14) has a first guide return surface (141) on the side facing the demoulding direction of the demoulding pin (1); the first guide return surface (141) is inclined toward the demoulding direction of the demoulding pin (1); a second guide return surface (213) is provided on the pin groove (21); during the movement and resetting process of the demoulding pin (1), the first guide return surface (141) slides along the second guide return surface (213) to guide the guide section into the pin groove (21).

4. The demoulding pin according to claim 1 or 2, characterized in that: An avoidance cut corner (111) is provided on the end surface of one end of the first straight section (11) away from the inclined section (13).

5. The demoulding pin according to claim 1 or 2, characterized in that: An end of the first straight section (11) away from the inclined section (13) is provided with a mounting hole (112), and the mounting hole (112) is suitable for mounting a pin shaft (6).

6. The demoulding pin according to claim 1 or 2, characterized in that: Along the first direction, the thickness of the first straight section (11) is 3.4 mm-3.7 mm, and the thickness of the inclined section (13) is 2.5 mm-2.9 mm; And / or, the inclination angle of the inclined section (13) relative to the first straight section (11) is 2°-6°.

7. A demoulding mechanism, characterized in that: include: An inner mold (2) having a pin groove (21) therein; The demoulding pin (1) according to any one of claims 1 to 6, wherein the demoulding pin (1) is slidably disposed in the pin groove (21).

8. The demoulding mechanism according to claim 7, characterized in that: The bottom opening of the pin groove (21) is larger than the upper opening thereof, and the groove wall of the pin groove (21) comprises a guide surface (211) and a pressing surface (212), wherein the guide surface (211) extends vertically, and the pressing surface (212) is inclined toward the demoulding direction.

9. The demoulding mechanism according to claim 8, characterized in that: A second guide return surface (213) is provided on the top of the guide surface (211), and the second guide return surface (213) is inclined toward the demoulding direction.

10. A mold, characterized in that: include: roof; In the demoulding mechanism according to any one of claims 7 to 9, one end of the first straight section (11) away from the inclined section (13) is rotatably arranged on the top plate.

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