Forging and pressing die core, forging and pressing die, forging and pressing device and preparation method

Abstract

The invention discloses a forging and pressing die core, a forging and pressing die, a forging and pressing device and a preparation method. At least one forging and pressing through hole is formed in the forging and pressing die core, the shape of the forging and pressing through hole corresponds to that of an air guide piece, and in the process that the forging and pressing die extrudes a to-be-machined material, part of the to-be-machined material is extruded into the forging and pressing through hole; due to the fact that the two ends of the forging and pressing through hole are both communicated with the environment, in the process that the to-be-machined materials are extruded into the forging and pressing through hole, no air pressure difference is generated between the interior of the forging and pressing through hole and the environment, and the pressure borne by the to-be-machined materials in the forging and pressing through hole is reduced; the situation that the formed air guide piece is extruded and broken by pressure is avoided, the forming efficiency of the molded to-be-machined material is improved, and the purpose that the to-be-machined material is forged and pressed at a time through the forging and pressing mold core to form the VR glasses cover body is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of VR glasses cover preparation, and in particular to a forging die core, a forging die, a forging device and a preparation method. Background Art

[0002] In the prior art, for the forging of thin sheets on forged parts, a blind hole is generally opened on the die to forge the thin sheets. In the preparation technology of VR glasses, the air guide plates on the VR glasses cover also need to be formed by die forging. However, due to the size difference between the thin sheet and the air guide plates, the thickness of the air guide plates on the VR glasses cover is smaller than the thickness of the thin sheet. If the existing blind holes are used for forging, in the process of squeezing the material to be processed into the blind holes, air pressure will be generated inside the blind holes to hinder the entry of the material to be processed. That is, the air guide plates formed by forging may be broken and delaminated due to the squeezing of the air pressure in the blind holes.

[0003] Since the thickness of the sheet is larger than that of the air guide, the corresponding blind hole is also larger. During the forging process of the sheet, the air pressure in the blind hole will not have too much impact on the forging of the sheet, and it is within the controllable range. Therefore, the blind hole can be used to forge the existing sheet. However, the design of the blind hole is not suitable for forging the air guide on the VR glasses cover. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a forging die core, which is used for forging to form a VR glasses cover, wherein the VR glasses cover includes a shell and a plurality of air guide plates, wherein the air guide plates are vertically arranged on the inner surface of the shell,

[0005] The first surface of the forging die core corresponds to the inner surface of the VR glasses cover so as to forge and form the inner surface of the VR glasses cover; and the forging die core is provided with at least one forging through hole, the shape of which corresponds to the shape of the air guide plate so as to forge and form the multiple air guide plates.

[0006] Among them, the second surface of the forging die core is provided with at least one reinforcement portion, the second surface is arranged opposite to the first surface, the reinforcement portion extends in a direction away from the first surface, and the reinforcement portion is located between two adjacent forging through holes.

[0007] Wherein, the projection of the reinforcement portion on the second surface does not overlap with the forging through hole.

[0008] In which, the second surface of the forging die core is provided with multiple reinforcing parts, the minimum spacing between two adjacent reinforcing parts is greater than or equal to the aperture of the forging through hole located between the two adjacent reinforcing parts, and the average spacing between two adjacent reinforcing parts is greater than the aperture of the forging through hole located between the two adjacent reinforcing parts.

[0009] Wherein, the distance between two adjacent reinforcement parts increases in a direction away from the first surface.

[0010] Wherein, the height of the forged through hole is smaller than the height of the reinforcement portion.

[0011] The second surface of the forging die core is provided with a protective member, the protective member forms an accommodation space, the accommodation space is communicated with the at least one forging through hole, and the at least one reinforcement portion is located in the accommodation space.

[0012] In order to solve the above technical problems, the present application also provides a forging die, including a forging die core and a fixed die core as described above, the forging die core is arranged corresponding to the fixed die core, the surface of the fixed die core close to the forging die core corresponds to the outer surface of the VR glasses cover, the forging die core moves close to the fixed die core and fits with the fixed die core to forge and form the VR glasses cover.

[0013] In order to solve the above technical problems, the present application also provides a forging device, which includes the forging die and die frame assembly as described above, wherein the forging die is arranged on the die frame assembly, and the die frame assembly drives the forging die core to move close to the fixed die core so that the forging die core and the fixed die core fit together to forge and form the VR glasses cover.

[0014] In order to solve the above technical problems, the present application also provides a preparation method, which is applied to the forging die core as described above, and / or the forging die as described above, and / or the forging device as described above to prepare a VR glasses cover, comprising:

[0015] Placing the material to be processed between the forging die core and the fixed die core, and fitting the forging die core and the fixed die core together;

[0016] The forging die core and the fixed die core extrude the material to be processed so that part of the material to be processed is squeezed into the forging through hole. The forging through hole shapes the material to be processed to form an air guide plate on the VR glasses cover.

[0017] Beneficial effects of the present application: Different from the prior art, the forging die core of the present application is used to forge a VR glasses cover, and a plurality of air guides are vertically arranged on the inner surface of the VR glasses cover, and the first surface of the forging die core corresponds to the inner surface of the VR glasses cover, and at least one forging through hole is provided on the forging die core, and the shape of the forging through hole corresponds to the shape of the air guide, and is used to forge to form a plurality of air guides. Both ends of the forging through hole are connected to the external environment, that is, in the process of forging the air guide, there will be no pressure difference between the inside of the forging through hole and the external environment, so as to reduce the pressure on the material to be processed when it is squeezed into the forging through hole, avoid the situation that the formed air guide is squeezed and broken by pressure, improve the forging efficiency of the air guide, and enhance the user experience of the forging die core. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] in:

[0020] Figure 1 This is a structural schematic diagram of an embodiment of a VR glasses cover of the present application;

[0021] Figure 2 It is a structural schematic diagram of an embodiment of a forging die core of the present application;

[0022] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of the middle forging die core along the section line II';

[0023] Figure 4 yes Figure 2 A structural schematic diagram of the middle forging die core from another perspective;

[0024] Figure 5 It is a structural schematic diagram of an embodiment of the forging device of the present application.

[0025] Figure numerals: forging device A; forging die core 1; forging through hole 11; reinforcement part 12; protective part 13; VR glasses cover 2; shell 21; air guide plate 22; mold frame assembly 3; first mold frame 31; second mold frame 32; cylinder 33; heating module 34. DETAILED DESCRIPTION

[0026] The scheme of the embodiment of the present application is described in detail below in conjunction with the drawings of the specification.

[0027] In the following description, for the purpose of explanation rather than limitation, specific details such as specific system structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0028] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the objects associated before and after are in an "or" relationship. In addition, "many" in this article means two or more than two. In addition, the term "at least one" in this article means any combination of at least two of any one or more of a plurality of, for example, including at least one of A, B, and C, and can mean including any one or more elements selected from the set consisting of A, B, and C. In addition, the terms "first", "second", and "third" in this application are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.

[0030] In the prior art, forging the material to be processed to form a VR glasses cover is generally divided into two steps. First, the outer shell of the VR glasses cover and the air guide plate on the VR glasses cover are forged separately, and then the air guide plate is welded to the outer shell of the VR glasses cover to form the VR glasses cover. Since the thickness of the air guide plate on the VR glasses cover is relatively small, that is, the corresponding width of the blind hole on the mold will also be small. In the process of squeezing the material to be processed into the blind hole, the air pressure in the blind hole will increase, which is easy to compress the squeezed material to be processed, causing the formed air guide plate to break and delaminate. Moreover, due to the small volume of the air guide plate, it is more difficult to separate the air guide plate from the mold, which may cause material stripping and deformation. At the same time, the vertical angles of different air guide plates distributed on the outer shell and the different curved surface lengths of the air guide plates will increase the difficulty of welding the air guide plates to the outer shell, which seriously affects the preparation efficiency of the VR glasses cover.

[0031] In order to solve the above technical problems, the present application provides a forging die core to improve the forging efficiency of the air guide plate, realize one-time forging forming of the VR glasses cover, eliminate the need to weld the air guide plate separately, and improve the preparation efficiency of the VR glasses cover.

[0032] See also Figure 1 , Figure 1 The VR glasses cover 2 includes a shell 21 and a plurality of air guides 22 , and the air guides 22 are vertically arranged on the inner surface of the shell 21 .

[0033] See also Figure 2 , Figure 2 It is a schematic diagram of the structure of an embodiment of the forging die core of the present application. The first surface of the forging die core 1 corresponds to the inner surface of the VR glasses cover 2, so as to forge and form the inner surface of the VR glasses cover 2, wherein the inner surface of the VR glasses cover 2 is also the inner surface of the shell 21. In addition, at least one forging through hole 11 is provided on the forging die core 1, and the shape of the forging through hole 11 corresponds to the shape of the air guide plate 22, which is used to forge and form a plurality of air guide plates 22, so that the forged VR glasses cover 2 has a plurality of air guide plates 22, and the user does not need to additionally weld the forged air guide plates 22 to the shell 21 of the VR glasses cover 2, so as to realize the one-time forging and forming of the material to be processed, reduce the preparation steps of the VR glasses cover 2, improve the preparation efficiency of the VR glasses cover 2, and enhance the user's experience of using the forging die core 1.

[0034] Among them, since both ends of the forging through hole 11 are connected to the environment, that is, when the material to be processed is squeezed into the forging through hole 11, there is no pressure difference between the inside of the forging through hole 11 and the external environment, which hinders the material to be processed from entering the forging through hole 11, and squeezes the material to be processed squeezed into the forging through hole 11, affecting the forming efficiency of the air guide plate 22. The forging efficiency of the forging die core 1 on the air guide plate 22 is further improved.

[0035] In the prior art, when forging an air guide plate, a blind hole corresponding to the shape of the air guide plate is generally opened on a mold, and then the material to be processed is squeezed into the blind hole. Since the blind hole has only one opening connected to the external environment, after the material to be processed is squeezed into the blind hole from the opening, a closed space is formed in the groove, and as the material to be processed is further squeezed into the blind hole, the gas in the blind hole is compressed, and the air pressure increases, which will produce resistance to prevent the material to be processed from entering the blind hole. Moreover, the material to be processed is in contact with the hole wall of the blind hole during the entire process of entering the blind hole. The hole wall will also produce resistance to the material to be processed entering the blind hole, and will compress the material to be processed entering the blind hole, which is likely to cause the material to be processed to break and stratify after being shaped, which will further affect the demolding of the material to be processed after being shaped, and increase the difficulty of demolding.

[0036] In the present application, the forging through hole 11 provided on the forging die core 1 forges the material to be processed to form the air guide plate 22. Since the forging through hole 11 is connected to the external environment, the resistance of the material to be processed being squeezed into the forging through hole 11 is reduced. The efficiency of forging the air guide plate 22 by the forging die core 1 is improved, and the air guide plate 22 of the VR glasses cover 2 is forged while the shell 21 of the VR glasses cover 2 is forged, so that the material to be processed is forged and formed at one time, the preparation steps of the VR glasses cover 2 are reduced, the preparation efficiency of the VR glasses cover 2 is improved, and the user experience of the forging die is enhanced.

[0037] For details, please refer to Figure 2 and Figure 3 , Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of the middle forging die core along the section line II'.

[0038] The second surface of the forging die core 1 is provided with at least one reinforcement portion 12, the second surface of the forging die core 1 is arranged opposite to the first surface of the forging die core 1, the reinforcement portion 12 extends away from the first surface, and the reinforcement portion 12 is located between two adjacent forging through holes 11.

[0039] As can be seen from the forging hole 11, after the material to be processed is squeezed into the forging hole 11, the forging hole 11 shapes the material to be processed, that is, the material to be processed needs to contact the hole wall of the forging hole 11. Therefore, the height of the forging hole 11 can be reduced to reduce the resistance encountered by the material to be processed in the first hole section 111.

[0040] In practical applications, if the height of the forging through hole 11 is directly reduced without any other treatment, during the process of the forging die core 1 extruding the material to be processed, the forging die core 1 may be insufficiently strong due to the reduction in the height of the forging through hole 11, and may be easily deformed by the material to be processed.

[0041] Therefore, the present embodiment proposes that at least one reinforcement portion 12 is provided on the second surface of the forging die core 1, and the reinforcement portion 12 is located between two adjacent forging through holes 11. Among them, since the reinforcement portion 12 is located between two adjacent forging through holes 11, the reinforcement portion 12 can be used to increase the strength of the die core section between the two adjacent forging through holes 11. In the process of the forging die core 1 extruding the material to be processed, the reinforcement portion 12 can provide a reaction force to resist the extrusion of the material to be processed on the forging die core 1, increase the strength of the forging die core 1, and avoid the situation in which the material to be processed squeezes and deforms the forging die core 1 due to the reduction in the height of the forging through holes 11 when the forging die core 1 extrudes the material to be processed, thereby improving the practicality of the forging die core 1.

[0042] Specifically, when the material to be processed is squeezed into the forging through hole 11, the hole wall of the forging through hole 11 is in contact, and the forging through hole 11 shapes the squeezed material to be processed, and when the material to be processed is squeezed to the second surface of the forging die core 1, the material to be processed gradually breaks away from the contact with the hole wall of the forging through hole 11, so as to reduce the friction between the material to be processed and the hole wall, reduce the resistance of the material to be processed being squeezed into the forging through hole 11 and the resistance of demolding on the forging through hole 11, and due to the presence of the reinforcement part 12, the strength of the forging die core 1 is increased, which can prevent the forging die core 1 from being squeezed and deformed by the material to be processed.

[0043] By cooperating with the forging through hole 11 and the reinforcement part 12, the forging die core 1 can reduce the height of the forging through hole 11 while ensuring strength, reduce the hole wall area where the material to be processed contacts the forging through hole 11, and further reduce the friction between the material to be processed and the hole wall, reduce the resistance of the material to be processed being squeezed into the forging through hole 11 and the resistance to demolding on the forging through hole 11, thereby improving the user experience of the forging die.

[0044] Optionally, a projection of the reinforcement portion 12 on the second surface does not overlap with the forging through hole 11 .

[0045] As mentioned above, the reinforcement portion 12 is provided in order to ensure the strength of the forging die core 1 while reducing the height of the forging through hole 11, and reducing the height of the forging through hole 11 is to reduce the contact area between the material to be processed and the forging through hole 11, and reduce the friction force on the material to be processed. If the projection of the reinforcement portion 12 on the second surface overlaps with the forging through hole 11, after the material to be processed is squeezed to the second surface of the forging die core 1 and separates from the forging through hole 11, the material to be processed shaped in the forging through hole 11 will continue to contact the surface of the reinforcement portion 12, that is, the purpose of reducing the friction force on the material to be processed cannot be achieved. Moreover, in the process of the material to be processed contacting the reinforcement portion 12, the surface of the reinforcement portion 12 may also affect the shape of the shaped material to be processed, for example, squeezing the shaped material to be processed crooked, etc., affecting the subsequent formation of the air guide plate 22.

[0046] Therefore, this embodiment proposes that the projection of the reinforcement portion 12 on the second surface does not overlap with the forging through hole 11, so as to ensure the strength of the forging die core 1 and improve the practicability of the forging die core 1 without affecting the forging efficiency of the forging die core 1 on the air guide plate 22.

[0047] Optionally, the second surface of the forging die core 1 is provided with a plurality of reinforcement portions 12, the minimum spacing between two adjacent reinforcement portions 12 is greater than or equal to the aperture of the forging through hole 11 located between the two adjacent reinforcement portions 12, and the average spacing between two adjacent reinforcement portions 12 is greater than the aperture of the forging through hole 11 located between the two adjacent reinforcement portions 12.

[0048] Among them, a plurality of reinforcement parts 12 are respectively arranged between two adjacent forging through holes 11 , and a reinforcement part 12 is arranged between any two adjacent forging through holes 11 to increase the strength of the forging die core 1 .

[0049] Optionally, the minimum spacing between adjacent reinforcement portions 12 is greater than or equal to the aperture of the forged through hole 11 between two adjacent reinforcement portions 12 , and the average spacing between adjacent reinforcement portions 12 is greater than the aperture of the forged through hole 11 between two adjacent reinforcement portions 12 .

[0050] In one embodiment, if Figure 3 As shown, the spacing between two adjacent reinforcing portions 12 increases in the direction away from the first surface, wherein the reinforcing portion 12 is connected to the end of the forged through hole 11 close to the second surface, that is, one end of the channel formed by the two adjacent reinforcing portions 12 is connected to the end of the forged through hole 11 close to the second surface, and since the spacing between the two reinforcing portions 12 increases in the direction away from the first surface, the minimum spacing between the two reinforcing portions 12 is located at the connection between the reinforcing portions 12 and the forged through hole 11, and the minimum spacing between the two reinforcing portions 12 is equal to the aperture of the forged through hole 11, and since the spacing between the two reinforcing portions 12 increases in the direction away from the first surface, the average spacing between two adjacent reinforcing portions 12 is greater than the aperture of the forged through hole 11.

[0051] Specifically, the cross-sectional shape of the channel formed between two adjacent reinforcements 12 can be a trapezoid, the shorter parallel sides of the trapezoid are closer to the forging through hole 11 relative to the longer parallel sides, and the length is equal to the aperture of the forging through hole 11, the channel formed between the two adjacent reinforcements 12 is connected to the forging through hole 11, forming a chamfer connected to the forging through hole 11 (for the convenience of description, the trapezoidal channel formed between the two adjacent reinforcements 12 is hereinafter referred to as a chamfer). In the process of forging the material to be processed by the forging die core 1, the material to be processed is shaped in the forging through hole 11, and the shaped material to be processed enters the chamfer. Since the interval between the two adjacent reinforcements 12 gradually increases in the direction away from the first surface, that is, the radial cross-sectional area of ​​the chamfer gradually increases, the shaped material to be processed will not contact the surface of the reinforcement 12, so as to reduce the friction force on the material to be processed. At the same time, due to the presence of the reinforcement 12, the strength of the forging die core 1 can be effectively increased, and the practicality of the forging die core 1 is improved.

[0052] In another embodiment, the reinforcement portion 12 can also be set to a stepped type, that is, the cross-sectional shape of the channel formed between two adjacent reinforcement portions 12 can be a "convex" shape. While increasing the strength of the forging die core 1, it can also avoid the contact between the shaped material to be processed and the surface of the reinforcement portion 12, thereby reducing the friction force on the material to be processed.

[0053] In other embodiments, the surface of the reinforcement portion 12 can also be an arc segment, and the cross-sectional shape of the channel formed between two adjacent reinforcement portions 12 can be a trapezoid with arc-shaped sides, and the arc-shaped sides can be curved inward or outward. While increasing the strength of the forging die core 1, it can also avoid the contact between the shaped material to be processed and the surface of the reinforcement portion 12, thereby reducing the friction force on the material to be processed.

[0054] In summary, on the basis of ensuring that the reinforcement portion 12 does not contact the shaped material to be processed and increasing the strength of the forging die core 1, the present application does not restrict the surface of the reinforcement portion 12 and the cross-sectional shape of the channel formed between two adjacent reinforcement portions 12.

[0055] Among them, considering the processing efficiency of the reinforcement part 12, it is preferred that the cross-sectional shape of the channel formed between two adjacent reinforcement parts 12 is a trapezoid (chamfer), which can effectively reduce the processing difficulty of the reinforcement part 12, improve the processing efficiency of the forging die core 1, and enhance the user's experience of using the forging die core 1.

[0056] Optionally, the height of the forged through hole 11 is smaller than the height of the reinforcement portion 12 .

[0057] As mentioned above, the smaller the height of the forging hole 11, the smaller the resistance encountered by the material to be processed in the forging hole 11. Therefore, in this embodiment, the height of the forging hole 11 is set to be smaller than the height of the reinforcement part 12. While reducing the resistance encountered by the material to be processed in the forging hole 11, the strength of the forging die core 1 is improved, thereby improving the practicality of the forging die core 1.

[0058] Optionally, the height of each forged through hole 11 is smaller than the height of the air guide plate 22 .

[0059] Among them, as mentioned above, during the process of the material to be processed being squeezed into the forging through hole 11, it will be shaped in the forging through hole 11, and the shaped material to be processed will enter the channel formed by the two adjacent reinforcement parts 12. Since the minimum spacing between the two adjacent reinforcement parts 12 is less than or equal to the aperture of the forging through hole 11, that is, the shaped material to be processed will not contact the surface of the reinforcement part 12, which can accelerate the shaping of the shaped material to be processed.

[0060] The height of the forging through hole 11 is smaller than the height of the air guide plate 22, that is, when the material to be processed enters the forging through hole 11 for shaping, it does not need to contact the hole wall height corresponding to the height of the air guide plate 22. After the material to be processed is shaped in the forging through hole 11, it immediately enters the channel formed by the two adjacent reinforcement parts 12 for shaping. On the basis of improving the forming of the material to be processed, it can reduce the contact area between the material to be processed squeezed into the forging through hole 11 and the hole wall of the forging through hole 11, reduce the friction between the material to be processed and the hole wall, reduce the resistance of the material to be processed being squeezed into the forging through hole 11, avoid the fracture and stratification of the material to be processed after shaping, and reduce the resistance of the material to be processed to be demolded from the forging through hole 11 after shaping.

[0061] In one embodiment, the sum of the height of the forged through hole 11 and the height of the reinforcement portion 12 may be less than the height of the air guide plate 22. Since the forged through hole 11 and the reinforcement portion 12 need to be formed through precision machining, the machining difficulty of the forged through hole 11 can be reduced by reducing the total height of the forged through hole 11 and the reinforcement portion 12.

[0062] It can be understood that in the process of forging the material to be processed by the forging die core 1, part of the material to be processed is squeezed into the forging through hole 11, the material to be processed is shaped in the forging through hole 11, and enters the channel formed between adjacent reinforcement parts 12 to be shaped. Since both ends of the forging through hole 11 are connected to the external environment, as the amount of material to be processed pressurized into the forging through hole 11 increases, the height of the shaped material to be processed may be greater than the required height of the air guide plate 22. After demolding the shaped material to be processed, the user can trim the shaped material to be processed based on the required height to form the air guide plate 22.

[0063] Alternatively, if Figure 3 As shown, a protective member 13 is disposed on the second surface of the forging die core 1. The protective member 13 forms an accommodating space, the accommodating space is communicated with the forging through hole 11, and the reinforcing portion 12 is located in the accommodating space.

[0064] As mentioned above, the sum of the height of the forging through hole 11 and the height of the reinforcement 12 is less than the height of the air guide plate 22. Then, after passing through the channel formed by the forging through hole 11 and the two adjacent reinforcements 12, one end of the shaped material to be processed will be exposed to the environment, and the exposed end will not be blocked by other structures in the circumferential direction. Since the forging die core 1 will move during the forging process, that is, the exposed shaped material to be processed may collide with other components, and there will be a risk of the shaped material to be processed being knocked crooked or broken. Based on this, in this embodiment, a protective member 13 is provided on the second surface of the forging die core 1, and the accommodating space formed by the protective member 13 is connected to the forging through hole 11, that is, after the material to be processed is shaped by the forging through hole 11, it will enter the accommodating space, and the protective member 13 will block the circumferential direction of the shaped material to be processed to play a protective role.

[0065] In one embodiment, if Figure 4 As shown, Figure 4 yes Figure 2 A schematic diagram of the structure of the forging die core from another perspective. The side of the accommodating space away from the second surface can be connected to the external environment to prevent the material to be processed from entering the accommodating space after shaping, causing air pressure fluctuations in the accommodating space, thereby affecting the forming efficiency of the material to be processed, thereby improving the forging efficiency of the forging die core 1 on the air guide plate 22, improving the practicality of the forging die core 1, and reducing the difficulty of processing the protective member 13.

[0066] Among them, the sum of the height of the protective part 13 and the height of the forging hole 11 can be greater than the height of the air guide plate 22. Therefore, the shaped material to be processed can be located in the accommodating space, and the protective part 13 protects the shaped material to be processed, thereby improving the practicality of the forging die core 1.

[0067] In one embodiment, the height of the air guide plate 22 is 5-6 mm, and the height of each forged through hole 11 is less than or equal to 1 mm.

[0068] In actual applications, the required height of the air guide piece 22 is 5 to 6 mm, for example, 5.2 mm, and the thickness is 0.3 mm. The user conducts experiments on the size of the forging through hole 11 in the forging die based on the required height; wherein, since different air guide pieces 22 on the VR glasses cover 2 have different lengths, the length of the forging through hole 11 is not limited in the experimental details below. The following experiments take the required height of the air guide piece 22 as 5.2 mm as an example:

[0069] Experiment 1:

[0070] The height of the forged through hole 11 is 5.2 mm, the width is 0.3 mm, and no reinforcement part 12 is provided. The material to be processed is forged under the conditions of equipment pressure of 600T, forming temperature of 350°C (temperature of the forging die) and forging time of 20s. It is observed that the size of the air guide plate on the forged shell does not match the required size of the air guide plate 22, and there are cracks on the forged air guide plate. After multiple forgings using the forging die core 1, the deformation of the forged through hole 11 on the forging die core 1 is not obvious.

[0071] Experiment 2:

[0072] The height of the forged through hole 11 is 3 to 5 mm, the width is 0.3 mm, and no reinforcement portion 12 is provided. The material to be processed is forged under the conditions of an equipment pressure of 600T, a forming temperature of 350°C, and a forging time of 20s. It is observed that the height of the air guide vanes on the forged shell is only 1 to 3 mm, and some of the air guide vanes are cracked, which does not meet the required size of the air guide vanes 22. After multiple forgings using the forging die core 1, some of the forged through holes 11 on the forging die core 1 are deformed.

[0073] Experiment 3:

[0074] The height of the forged through hole 11 is less than 3 mm and the width is 0.3 mm, and no reinforcement portion 12 is provided. The material to be processed is forged under the conditions of an equipment pressure of 600 T, a forming temperature of 350°C, and a forging time of 20 s. It is observed that the height of the air guide vanes on the forged shell is 1 to 5 mm, and some air guide vanes are cracked. The forging effect is unstable, and the air guide vanes 22 cannot be produced in batches. After multiple forgings using the forging die core 1, most of the forged through holes 11 on the forging die core 1 are deformed.

[0075] From the experimental results of Experiments 1, 2 and 3, it can be seen that reducing the height of the forging through hole 11 is helpful for forging the material to be processed to form the air guide 22, but the effect is not stable. At the same time, since the reinforcement part 12 is not provided to increase the strength of the forging die core 1, when the height of the forging through hole 11 is reduced, the forging die core 1 is more likely to deform after multiple forgings. Therefore, the user continues to conduct the following experiments:

[0076] Experiment 4:

[0077] The height of the forged through hole 11 is 5.2 mm, the width is 0.4 mm, and no reinforcement part 12 is provided. The material to be processed is forged under the conditions of equipment pressure of 600T, forming temperature of 350°C, and forging time of 20s. It is observed that the size of the air guide plate on the forged shell does not match the required size of the air guide plate 22, and cracks exist on some of the forged air guide plates. After multiple forgings using the forging die core 1, the deformation of the forged through hole 11 on the forging die core 1 is not obvious.

[0078] It can be seen from the experimental results of Experiment 1 and Experiment 4 that increasing the width of the forged through hole 11 can slightly alleviate the cracking of the forged air guide plate, but cannot completely solve the cracking problem of the forged air guide plate.

[0079] In summary, from the data of Experiments 1 to 4, it can be obtained that, when the reinforcement portion 12 is not set, reducing the height of the forging through hole 11 and increasing the width of the forging through hole 11 can alleviate the cracking problem of the air guide plate to a certain extent, but it cannot completely solve the problem of cracking of the air guide plate formed by forging. At the same time, due to the reduction in the height of the forging through hole 11, the strength of the forging die core 1 is reduced. In the process of forging the material to be processed by the forging die core 1, as the forging times of the forging die core 1 increase, the forging die core 1 is prone to deformation, which will further affect the forging efficiency of the air guide plate.

[0080] Based on the above experimental reagents, the present application further performs the following experiment, in which a reinforcement portion 12 is provided on the second surface of the forging die core 1 to enhance the strength of the forging die core 1, and two adjacent reinforcement portions 12 form chamfers connected to the forging through hole 11, and the height of the forging through hole 11, the taper of the chamfer and other parameters are adjusted:

[0081] Experiment 5:

[0082] The height of the forged through hole 11 is 1-5mm, the width is 0.4mm, and there is a reinforcement part 12, forming a chamfer connected to the forged through hole 11, and the taper of the chamfer is 1°. The material to be processed is forged under the conditions of equipment pressure of 600T, forming temperature of 350℃, and forging time of 20s. It is observed that the height of the air guide blades on the forged shell is 0.5-3mm, the thickness is 0.22-0.39mm, and some air guide blades are cracked. The forging effect is unstable, and the air guide blades 22 cannot be produced in batches; after multiple forgings using the forging die core 1, the deformation of the forged through hole 11 on the forging die core 1 is not obvious.

[0083] Experiment 6:

[0084] The height of the forged through hole 11 is 0.25-1mm, the width is 0.4mm, and there is a reinforcement portion 12, forming a chamfer connected to the forged through hole 11, and the taper of the chamfer is 1°. The material to be processed is forged under the conditions of an equipment pressure of 600T, a forming temperature of 350℃, and a forging time of 20s. It is observed that the height of the air guide plate on the forged shell is 8-20mm and the thickness is 0.3-0.39mm. After trimming the height of the forged air guide plate, it can meet the required height of the air guide plate 22, and the thickness of the forged air guide plate is slightly larger than the required thickness of the air guide plate 22; after multiple forgings using the forging die core 1, the deformation of the forged through hole 11 on the forging die core 1 is not obvious.

[0085] The experimental results of Experiments 5 and 6 further indicate that reducing the height of the forging hole 11 and reducing the contact area of ​​the material to be processed in the forging hole 11 can effectively reduce the resistance of the material to be processed being squeezed into the forging hole 11, avoid fracture and stratification of the material to be processed after shaping, and improve the preparation efficiency of the air guide plate 22 on the VR glasses cover 2.

[0086] Meanwhile, by comparing the experimental results of Experiment 5 with Experiment 6, and the experimental results of Experiment 2 with Experiment 3, it can be clearly shown that providing the reinforcing portion 12 on the second surface of the forging die core 1 can effectively improve the strength of the forging die core 1 .

[0087] Experiment 7:

[0088] The height of the forged through hole 11 is 0.25-1mm, the width is 0.4mm, and there is a reinforcement portion 12, forming a chamfer connected to the forged through hole 11, and the taper of the chamfer is 2°. The material to be processed is forged under the conditions of an equipment pressure of 600T, a forming temperature of 350℃, and a forging time of 20s. It is observed that the height of the air guide plate on the forged shell is 6-16mm, and the thickness is 0.33-0.4mm. After trimming the height of the forged air guide plate, it can meet the required height of the air guide plate 22, and the thickness of the forged air guide plate is slightly larger than the required thickness of the air guide plate 22; after multiple forgings using the forging die core 1, the deformation of the forged through hole 11 on the forging die core 1 is not obvious.

[0089] Experiment 8:

[0090] The height of the forged through hole 11 is 0.25-1mm, the width is 0.4mm, and there is a reinforcement portion 12, forming a chamfer connected to the forged through hole 11, and the taper of the chamfer is 3°. The material to be processed is forged under the conditions of an equipment pressure of 600T, a forming temperature of 350℃, and a forging time of 20s. It is observed that the height of the air guide plate on the forged shell is 6-15mm and the thickness is 0.30-0.39mm. After trimming the height of the forged air guide plate, the height and thickness of the forged air guide plate can meet the required size of the air guide plate 22; after multiple forgings using the forging die core 1, the deformation of the forged through hole 11 on the forging die core 1 is not obvious.

[0091] From the experimental results of Experiments 6, 7 and 8, it can be obtained that when the height of the forging through hole 11 is less than or equal to 1 mm, the forging die core 1 can form a more ideal air guide plate 22 by forging the material to be processed. Therefore, in this embodiment, when the height of the air guide plate 22 is set to 5 to 6 mm, the height of the forging through hole 11 is less than or equal to 1 mm.

[0092] Further comparing the experimental results of Experiment 6, Experiment 7 and Experiment 8, it can be found that when the taper of the chamfer is larger, the height of the forged air guide piece will be smaller.

[0093] However, the larger the taper of the chamfer, the better. Further considering the distance between multiple chamfers, the taper of the chamfer and the setting height of the chamfer, since the distance between the multiple air guides 22 on the VR glasses cover 2 is small, that is, the distance between the multiple chamfers is small. If the taper of the chamfer is large at this time, the hole walls of two adjacent chamfers will intersect, that is, the height of the reinforcing portion 12 is reduced. As can be seen from the previous text, the reinforcing portion 12 can be used to increase the strength of the forging die core 1. In the case where the height of the reinforcing portion 12 becomes smaller, it may affect the strength of the forging die core 1, causing the forging die core 1 to deform after multiple forgings. Therefore, in combination with the above-mentioned multiple groups of experimental data, the embodiment of the present application selects a chamfer setting taper of 2°, which can achieve the strength of the forging die core 1 while the size of the formed air guide 22 meets the requirements.

[0094] In other embodiments, if the distance between multiple chamfers is large (the width of the reinforcement portion 12 is large), and the size of the air guide plate 22 formed by forging meets the requirements, a chamfer with a larger taper may also be selected, and the present application does not impose any restrictions on this.

[0095] It can be understood that the above experimental data is based on the fact that the cross-sectional shape of the channel formed between two adjacent reinforcement portions 12 is a trapezoid, forming a chamfer connected to the forged through hole 11. In other embodiments, if the cross-sectional shape of the channel formed between two adjacent reinforcement portions 12 is other shapes, other data settings may be used, and the present application does not impose any restrictions on this.

[0096] Furthermore, the user can set the width of the forged through hole 11 based on the required thickness of the air guide piece 22, set the height of the forged through hole 11 based on the required height of the air guide piece 22, etc. It is understandable that when the size of the air guide piece 22 required by the user changes, the user can also set the size of the forged through hole 11 based on the size of the new air guide piece 22, and the present application does not limit this.

[0097] In summary, the forging die core 1 provided in the present application is provided with a forging through hole 11, and the shape of the forging through hole 11 is set corresponding to the shape of the air guide plate 22. Since the forging through hole 11 is connected to the external environment, the air pressure in the forging through hole 11 will not increase during the process of squeezing the material to be processed into the forging through hole 11, and the squeezed material to be processed will not be compressed, thereby reducing the fracture and delamination of the material to be processed after shaping.

[0098] At the same time, at least one reinforcing portion 12 is provided on the second surface of the forging die core 1. The reinforcing portion 12 is used to increase the strength of the forging die core 1 while reducing the height of the forging through hole 11. Among them, reducing the height of the forging through hole 11 helps to reduce the contact area between the material to be processed and the hole wall of the forging through hole 11 after being squeezed into the forging through hole 11, reduce the resistance of the material to be processed being squeezed into the forging through hole 11, avoid the fracture and stratification of the material to be processed after shaping, reduce the resistance of the material to be processed when demolding after shaping, and reduce the difficulty of demolding the material to be processed after shaping. The reinforcing portion 12 increases the strength of the forging die core 1, avoids the situation that the forging die core 1 is squeezed and deformed by the material to be processed during the forging process of the forging die core 1, improves the safety of the forging die core 1, improves the preparation efficiency of the air guide plate 22 of the VR glasses cover 2, and improves the user experience of the forging die.

[0099] Furthermore, a protective member 13 is provided on the second surface of the forging die core 1, and the protective member 13 is used to protect the material to be processed after being shaped, and to shield the material to be processed circumferentially after being shaped to avoid the shaped material to be processed being collided with other structures, thereby improving the safety of the shaped material to be processed and improving the practicality of the forging die core 1.

[0100] The present application also provides a forging die (not shown), including a forging die core 1 and a fixed die core, the forging die core 1 and the fixed die core are arranged correspondingly, the surface of the fixed die core close to the forging die core 1 corresponds to the outer surface of the VR glasses cover 2, the forging die core 1 moves close to the fixed die core, fits with the fixed die core, and forges to form the VR glasses cover 2. Among them, the outer surface of the VR glasses cover 2 is also the outer surface of the shell 21. The first surface of the forging die core 1 mentioned above can be the surface of the forging die core 1 close to the fixed die core.

[0101] Among them, since the forging through hole 11 is provided on the forging die core 1, the air guide plate 22 can be forged, that is, while the forging die core 1 and the fixed die core are fitted to forge the shell 21, the air guide plate 22 can also be forged, so that the material to be processed can be forged and formed in one time, reducing the preparation steps of the VR glasses cover 2, improving the preparation efficiency of the VR glasses cover 2, and enhancing the user experience of the forging die.

[0102] The present application also provides a forging device, see Figure 5 , Figure 5 The forging device A provided in the embodiment of the present application includes a forging die and a die frame assembly 3, the forging die is arranged on the die frame assembly 3, and the die frame assembly 3 drives the forging die core 1 to move close to the fixed die core 4, so that the forging die core 1 and the fixed die core 4 fit together, so as to forge and form the VR glasses cover 2.

[0103] Specifically, the die frame assembly 3 includes a first die frame 31, a second die frame 32 and a driving cylinder 33. The first die frame 31 and the second die frame 32 are arranged at intervals along the axial direction of the forging die. The forging die core 1 is arranged on the side of the first die frame 31 close to the second die frame 32, and the fixed die core 4 is arranged on the side of the second die frame 32 close to the first die frame 31. One end of the driving cylinder 33 is arranged on the first die frame 31, and the other end is arranged on the second die frame 32 to drive the first die frame 31 to move close to the second die frame 32, so that the forging die core 1 and the fixed die core 4 are fitted to forge the material to be processed.

[0104] Optionally, the die frame assembly 3 further includes a heating module 34, and the heating module 34 is connected to the forging die to heat the forging die.

[0105] Furthermore, when the forging die core 1 and the fixed die core 4 are fitted together and the material to be processed is forged, the heat on the forging die core 1 and the fixed die core 4 will be transferred to the material to be processed, so as to improve the fluidity and ductility of the material to be processed, reduce the bubbles formed inside the forging through hole 11 when the material to be processed is squeezed into the forging through hole 11, and improve the strength and toughness of the air guide plate 22 formed by forging.

[0106] Furthermore, since the cross-sectional area of ​​the second hole segment 112 is larger than the cross-sectional area of ​​the first hole segment 111, the material to be processed is shaped in the first hole segment 111. After entering the second hole segment 112, the shaped material to be processed will not come into contact with the hole wall of the second hole segment 112. That is, the heat on the forging die will not be transferred from the hole wall of the second hole segment 112 to the shaped material to be processed, thereby improving the shaping efficiency of the shaped material to be processed.

[0107] In summary, the forging device A provided in the present application includes a forging die and a die frame assembly 3. The heating module 34 in the die frame assembly 3 is used to heat the forging die to improve the strength of the VR glasses cover 2 forged by the forging die, and improve the preparation efficiency of the VR glasses cover 2 by the forging device A.

[0108] The present application also provides a preparation method, which is applied to the forging die core 1 as described above, and / or the forging mold as described above, and / or the forging device A, to prepare a VR glasses cover 2, and the specific process includes: placing the material to be processed between the forging die core 1 and the fixed die core 4, and fitting the forging die core 1 and the fixed die core 4; the forging die core 1 and the fixed die core 4 extrude the material to be processed so that part of the material to be processed is squeezed into the forging through hole 11, and the first hole segment 111 shapes the material to be processed, and the shaped material to be processed enters the second hole segment 112 for shaping, and after the user trims the shaped material to be processed, the VR glasses cover 2 is formed.

[0109] Specifically, the user or the loading mechanism places the material to be processed between the forging die core 1 and the fixed die core 4, and starts the driving cylinder 33, so that the driving cylinder 33 drives the first die frame 31 to move close to the second die frame 32, so as to realize the movement of the forging die core 1 close to the fixed die core 4, and finally realize the fitting of the forging die core 1 and the fixed die core 4, and forge the material to be processed between the forging die core 1 and the fixed die core 4.

[0110] Since the surface of the forging die core 1 close to the fixed die core 4 corresponds to the inner surface of the VR glasses cover 2, and the surface of the fixed die core 4 close to the forging die core 1 corresponds to the outer surface of the VR glasses cover 2, the forging die core 1 and the fixed die core 4 fit together to extrude the material to be processed so that the material to be processed forms a corresponding shape. At the same time, part of the material to be processed will be squeezed into the forging through hole 11. Since the shape of the forging through hole 11 corresponds to the shape of the air guide plate 22, after the material to be processed is squeezed into the forging through hole 11, the forging through hole 11 shapes the material to be processed so that the material to be processed forms the shape of the air guide plate 22.

[0111] Next, after the shaped material to be processed is shaped, the shaped material to be processed is demolded, and the shaped material to be processed extruded into the forging through hole 11 is trimmed to obtain the VR glasses cover 2. The VR glasses cover 2 is forged and formed once, the preparation efficiency of the VR glasses cover 2 is improved, and the user experience is enhanced.

[0112] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A forging die core, characterized in that: The invention is applied to forging a VR glasses cover, wherein the VR glasses cover comprises a shell and a plurality of air guide plates, wherein the air guide plates are vertically arranged on the inner surface of the shell. The first surface of the forging die core corresponds to the inner surface of the VR glasses cover so as to forge and form the inner surface of the VR glasses cover; and the forging die core is provided with at least one forging through hole, the shape of which corresponds to the shape of the air guide plate so as to forge and form the multiple air guide plates.

2. The forging die core according to claim 1, characterized in that: The second surface of the forging die core is provided with at least one reinforcement portion, the second surface is arranged opposite to the first surface, the reinforcement portion extends in a direction away from the first surface, and the reinforcement portion is located between two adjacent forging through holes.

3. The forging die core according to claim 2, characterized in that: A projection of the reinforcement portion on the second surface does not overlap with the forging through hole.

4. The forging die core according to claim 2 or 3, characterized in that: The second surface of the forging die core is provided with a plurality of the reinforcing parts, the minimum spacing between two adjacent reinforcing parts is greater than or equal to the aperture of the forging through hole located between the two adjacent reinforcing parts, and the average spacing between two adjacent reinforcing parts is greater than the aperture of the forging through hole located between the two adjacent reinforcing parts.

5. The forging die core according to claim 4, characterized in that: The distance between two adjacent reinforcement portions increases in a direction away from the first surface.

6. The forging die core according to claim 2, characterized in that: The height of the forging through hole is smaller than the height of the reinforcement portion.

7. The forging die core according to claim 2, characterized in that: A protective member is disposed on the second surface of the forging die core, and the protective member forms an accommodating space, the accommodating space is communicated with the at least one forging through hole, and the at least one reinforcement portion is located in the accommodating space.

8. A forging die, characterized in that: It comprises a forging die core and a fixed die core as described in any one of claims 1 to 7, the forging die core is arranged corresponding to the fixed die core, the surface of the fixed die core close to the forging die core corresponds to the outer surface of the VR glasses cover, the forging die core moves close to the fixed die core and fits with the fixed die core to forge and form the VR glasses cover.

9. A forging device, characterized in that: The forging device includes the forging die and die frame assembly as described in claim 8, wherein the forging die is arranged on the die frame assembly, and the die frame assembly drives the forging die core to move close to the fixed die core so that the forging die core and the fixed die core are fitted to forge and form the VR glasses cover.

10. A preparation method, characterized in that: The method is applied to the forging die core according to any one of claims 1 to 7, and / or the forging die according to claim 8, and / or the forging device according to claim 9 to prepare a VR glasses cover, comprising: Placing the material to be processed between the forging die core and the fixed die core, and fitting the forging die core and the fixed die core together; The forging die core and the fixed die core extrude the material to be processed so that part of the material to be processed is squeezed into the forging through hole. The forging through hole shapes the material to be processed to form an air guide plate on the VR glasses cover.

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