A forging die core, a forging die, a forging device and a preparation method

Abstract

The application discloses a forging die core, a forging die, a forging device and a preparation method. The forging die core is provided with at least one forging through hole, and the shape of the forging through hole is correspondingly arranged according to the shape of a wind guide piece. In the process that the forging die extrudes the material to be processed, part of the material to be processed is extruded into the forging through hole, and the forging through hole shapes the material to be processed. Since the two ends of the forging through hole are both communicated with the environment, no air pressure difference is generated between the forging through hole and the environment in the process that the material to be processed is extruded into the forging through hole, the pressure borne by the material to be processed in the forging through hole is reduced, the situation that the formed wind guide piece is extruded and broken by the pressure is avoided, the forming efficiency of the shaped material to be processed is improved, and the material to be processed is once forged by the forging die core to form a VR glasses cover body.

Description

TECHNICAL FIELD

[0001] The application relates to a VR glasses cover body preparation technology field, in particular to a forging and pressing mold core, a forging and pressing mold, a forging and pressing device and a preparation method. BACKGROUND

[0002] In the prior art, the forging and pressing of a thin sheet on a forging and pressing part is generally realized by opening a blind hole on a mold to form the thin sheet by forging and pressing. In the preparation technology of VR glasses, the air guide sheet on the VR glasses cover body also needs to be formed by forging and pressing with a mold. However, due to the difference in size between the thin sheet and the air guide sheet, the thickness of the air guide sheet on the VR glasses cover body is smaller than that of the thin sheet. If the existing blind hole is used for forging and pressing, the gas pressure in the blind hole will hinder the entry of the material to be processed in the process of extruding the material to be processed into the blind hole, that is, the air guide sheet formed by forging and pressing may be broken and layered due to the extrusion of the gas pressure in the blind hole.

[0003] Since the thickness of the thin sheet is relatively large compared with the thickness of the air guide sheet, the size of the corresponding blind hole is also large. Therefore, in the process of forging and pressing the thin sheet, the gas pressure in the blind hole will not have a great impact on the forging and pressing of the thin sheet, which belongs to a controllable range, so the existing thin sheet can be forged and pressed with the blind hole. However, the design of the blind hole is not suitable for the forging and pressing of the air guide sheet on the VR glasses cover body. SUMMARY

[0004] To solve the above technical problems, the application provides a forging and pressing mold core applied to forging and pressing to form a VR glasses cover body, wherein the VR glasses cover body comprises a shell and a plurality of air guide sheets, the air guide sheets are vertically arranged on the inner surface of the shell,

[0005] The first surface of the forging and pressing mold core corresponds to the inner surface of the VR glasses cover body to forge and press to form the inner surface of the VR glasses cover body, and at least one forging and pressing through hole is arranged on the forging and pressing mold core, the shape of the forging and pressing through hole corresponds to the shape of the air guide sheet, and the plurality of air guide sheets are forged and pressed to form the plurality of air guide sheets.

[0006] The second surface of the forging and pressing mold core is provided with at least one reinforcing part, the second surface is arranged opposite to the first surface, the reinforcing part extends away from the first surface, and the reinforcing part is located between two adjacent forging and pressing through holes.

[0007] The projection of the reinforcing part on the second surface does not overlap with the forging and pressing through hole.

[0008] The second surface of the forging die core is provided with a plurality of reinforcing portions, the minimum distance between two adjacent reinforcing portions is greater than or equal to the hole diameter of the forging through hole between the two adjacent reinforcing portions, and the average distance between two adjacent reinforcing portions is greater than the hole diameter of the forging through hole between the two adjacent reinforcing portions.

[0009] The distance between two adjacent reinforcing portions increases in the direction away from the first surface.

[0010] The height of the forging through hole is less than the height of the reinforcing portion.

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

[0012] To solve the above technical problems, the present application also provides a forging die, which comprises the forging die core and the fixed die core as described above, the forging die core is correspondingly arranged with 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 body, and the forging die core close to the fixed die core moves and is attached to the fixed die core to form the VR glasses cover body by forging.

[0013] To solve the above technical problems, the present application also provides a forging device, which comprises the forging die and the die set assembly as described above, the forging die is arranged on the die set assembly, the die set 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 attached to each other to form the VR glasses cover body by forging.

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

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

[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 extruded into the forging through hole, the forging through hole shapes the material to be processed to form the air guide piece on the VR glasses cover body.

[0017] The beneficial effects of the present application: Different from the prior art, the forging die core of the present application is used for forging and pressing to form a VR glasses cover body, the inner surface of the VR glasses cover body is vertically provided with a plurality of air guide fins, the first surface of the forging die core corresponds to the inner surface of the VR glasses cover body, and at least one forging through hole is arranged on the forging die core, the shape of the forging through hole corresponds to the shape of the air guide fin, and the forging through hole is used for forging and pressing to form a plurality of air guide fins. Both ends of the forging through hole are in communication with the external environment, that is, in the process of forging and pressing the air guide fin, the forging through hole will not generate a pressure difference with the external environment, so as to reduce the pressure of the material to be processed extruded into the forging through hole, avoid the air guide fin formed by the pressure extrusion fracture, improve the forging efficiency of the air guide fin, and improve the user's experience of the forging die core. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Among them:

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

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

[0022] Figure 3 is Figure 2 is a sectional structure schematic diagram of the forging die core along the section line I-I' in

[0023] Figure 4 is Figure 2 is a structural schematic diagram of another view of the forging die core in

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

[0025] Drawing reference: forging device A; forging die core 1; forging through hole 11; reinforcing part 12; protection piece 13; VR glasses cover body 2; shell 21; air guide fin 22; die set assembly 3; first die set 31; second die set 32; air cylinder 33; heating module 34. DETAILED DESCRIPTION

[0026] The technical solutions of the embodiments of the present application will be described in detail below in combination with the drawings of the specification.

[0027] In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular architectures, interfaces, techniques, etc. in order to provide a thorough understanding of the application.

[0028] Reference in the specification to "an embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in

[0029] The term "and / or", merely describes association relationship of associated objects, which means that there can be three relationships, for example, A and / or B, which can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents an "or" relationship between the front and rear associated objects. In addition, "multiple" in this paper means two or more than two. In addition, the terms "first", "second", "third" in this application are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.

[0030] In the prior art, the forging of the material to be processed to form the VR glasses cover body is generally divided into two steps, first, the shell of the VR glasses cover body and the air guide piece on the VR glasses cover body are forged respectively, and then the air guide piece is welded on the shell of the VR glasses cover body to form the VR glasses cover body. Since the thickness of the air guide piece on the VR glasses cover body is small, that is, the width corresponding to the blind hole on the mold is also small, the air pressure in the blind hole will become large during the extrusion of the material to be processed into the blind hole, which is easy to press the extruded material to be processed, so that the formed air guide piece is fractured and layered, and since the volume of the air guide piece is small, it is difficult to separate the air guide piece from the mold, which may cause material deformation and other problems. At the same time, the vertical angle of different air guide pieces distributed on the shell and the curved length of the air guide piece are different, which increases the difficulty of welding the air guide piece on the shell, and seriously affects the preparation efficiency of the VR glasses cover body.

[0031] In order to solve the above technical problems, the present application provides a forging die core, which improves the forging efficiency of the air guide piece, realizes one-time forging forming of the VR glasses cover body, does not need to weld the air guide piece separately, and improves the preparation efficiency of the VR glasses cover body.

[0032] Please refer to Figure 1 ,Figure 1 is a structural schematic diagram of an embodiment of the VR glasses cover of the present application. The VR glasses cover 2 comprises a shell 21 and a plurality of air deflectors 22, which are vertically arranged on the inner surface of the shell 21.

[0033] Please refer to Figure 2 , Figure 2 is a structural schematic diagram of an embodiment of the VR glasses cover of the present application. The VR glasses cover 2 comprises a shell 21 and a plurality of air deflectors 22, which are vertically arranged on the inner surface of the shell 21.

[0034] Among them, since both ends of the forging through hole 11 are in communication with the environment, that is, in the process of extruding the workpiece into the forging through hole 11, the inside of the forging through hole 11 will not produce a pressure difference with the outside environment, which will hinder the workpiece from being extruded into the forging through hole 11, and will affect the forming efficiency of the air deflector 22. Further improve the forging efficiency of the air deflector 22 of the forging die 1.

[0035] In the prior art, the air deflector is forged by opening a blind hole corresponding to the shape of the air deflector on the die, and then extruding the workpiece into the blind hole. Since the blind hole has only one opening in communication with the outside environment, and after the workpiece is extruded into the blind hole through the opening, a closed space will be formed in the groove. As the workpiece is further extruded into the blind hole, the gas in the blind hole is compressed, the air pressure increases, and resistance will be generated to prevent the workpiece from entering the blind hole. In addition, the workpiece is in contact with the hole wall of the blind hole throughout the process of entering the blind hole, and the hole wall will also generate resistance to the workpiece entering the blind hole, which will compress the workpiece entering the blind hole, and easily cause the shaped workpiece to be broken and layered. Further, it will affect the demolding of the shaped workpiece and increase the difficulty of demolding.

[0036] In the application, the forging pressure through hole 11 provided on the forging pressure core 1 is used to forge and press the material to be processed to form the air guide piece 22. Since the forging pressure through hole 11 is in communication with the external environment, the resistance of the material to be processed being extruded into the forging pressure through hole 11 is reduced. The efficiency of the forging pressure core 1 in forging and pressing the air guide piece 22 is improved, the air guide piece 22 of the VR glasses cover body 2 is forged and pressed at the same time when the shell 21 of the VR glasses cover body 2 is forged and pressed, the material to be processed is once forged and pressed, the preparation steps of the VR glasses cover body 2 are reduced, the preparation efficiency of the VR glasses cover body 2 is improved, and the user experience of the forging die is improved.

[0037] Specifically, please refer to Figure 2 and Figure 3 , Figure 3 is Figure 2 the cross-sectional structure diagram of the forging die core along the cross-sectional line I-I' in

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

[0039] From the foregoing, after the material to be processed is extruded into the forging pressure through hole 11, the forging pressure through hole 11 is used to shape the material to be processed. That is, the material to be processed needs to be in contact with the hole wall of the forging pressure through hole 11. Therefore, the height of the forging pressure through hole 11 can be reduced to reduce the resistance of the material to be processed in the first hole section 111.

[0040] In actual application, if the height of the forging pressure through hole 11 is directly reduced without other treatment, the strength of the forging pressure core 1 may not be enough during the extrusion of the material to be processed by the forging pressure core 1, which is easily extruded and deformed by the material to be processed due to the reduction of the height of the forging pressure through hole 11.

[0041] Therefore, the embodiment provides that the second surface of the forging pressure core 1 is provided with at least one reinforcing portion 12, and the reinforcing portion 12 is located between two adjacent forging pressure through holes 11. Since the reinforcing portion 12 is located between two adjacent forging pressure through holes 11, the reinforcing portion 12 can be used to increase the strength of the core section between the two adjacent forging pressure through holes 11. During the extrusion of the material to be processed by the forging pressure core 1, the reinforcing portion 12 can provide a counterforce against the extrusion of the material to be processed on the forging pressure core 1, increase the strength of the forging pressure core 1, and avoid the situation that the forging pressure core 1 is extruded and deformed by the material to be processed due to the reduction of the height of the forging pressure through hole 11 during the extrusion of the material to be processed by the forging pressure core 1. The practicability of the forging pressure core 1 is improved.

[0042] Specifically, in the process of extruding the material to be processed into the forging through hole 11, the hole wall of the forging through hole 11 is in contact, the forging through hole 11 shapes the extruded material to be processed, and when the material to be processed is extruded to the second surface of the forging core 1, the material to be processed gradually comes out of 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 to be extruded into the forging through hole 11 and the resistance of the material to be processed to be demolded on the forging through hole 11, and because of the existence of the reinforcing part 12, the strength of the forging core 1 is increased, so that the forging core 1 can be prevented from being deformed by the extrusion of the material to be processed.

[0043] Through the cooperation of the forging through hole 11 and the reinforcing part 12, the forging core 1 can reduce the height of the forging through hole 11 while ensuring the strength, reduce the hole wall area of the material to be processed in contact with 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 to be extruded into the forging through hole 11 and the resistance of the material to be processed to be demolded on the forging through hole 11, and improve the user experience of the forging die.

[0044] Optionally, the projection of the reinforcing part 12 on the second surface does not overlap the forging through hole 11.

[0045] As described above, the reinforcing part 12 is provided to reduce the height of the forging through hole 11 in the case of ensuring the strength of the forging core 1, and the height of the forging through hole 11 is reduced to reduce the contact area of the material to be processed with the forging through hole 11 and reduce the friction received by the material to be processed. If the projection of the reinforcing part 12 on the second surface overlaps the forging through hole 11, after the material to be processed is extruded to the second surface of the forging core 1 and comes out of 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 reinforcing part 12, that is, the purpose of reducing the friction received by the material to be processed cannot be achieved. Moreover, in the process of the material to be processed contacting the reinforcing part 12, the surface of the reinforcing part 12 may also affect the shape of the shaped material to be processed, for example, extruding the shaped material to be processed, etc., which affects the formation of the subsequent air guide blade 22.

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

[0047] Optionally, the second surface of the forging core 1 is provided with a plurality of reinforcing parts 12, the minimum distance between adjacent two reinforcing parts 12 is greater than or equal to the hole diameter of the forging through hole 11 between the adjacent two reinforcing parts 12, and the average distance between the adjacent two reinforcing parts 12 is greater than the hole diameter of the forging through hole 11 between the adjacent two reinforcing parts 12.

[0048] The plurality of reinforcing portions 12 are arranged between any two adjacent forged through holes 11, so as to increase the strength of the forged mold core 1.

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

[0050] In an embodiment, as shown in FIG. 1, the distance between the adjacent two reinforcing portions 12 increases 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 adjacent two reinforcing portions 12 is connected to the end of the forged through hole 11 close to the second surface, and since the distance between the two reinforcing portions 12 increases away from the first surface, the minimum distance between the two reinforcing portions 12 is located at the connection between the reinforcing portion 12 and the forged through hole 11, and the minimum distance between the two reinforcing portions 12 is equal to the diameter of the forged through hole 11, and since the distance between the two reinforcing portions 12 increases away from the first surface, the average distance between the adjacent two reinforcing portions 12 is greater than the diameter of the forged through hole 11. Figure 3

[0051] Specifically, the cross-sectional shape of the channel formed between the adjacent two reinforcing portions 12 can be trapezoidal, the shorter parallel side of the trapezoid is close to the forged through hole 11 relative to the longer parallel side, and the length is equal to the diameter of the forged through hole 11, the channel formed between the adjacent two reinforcing portions 12 is connected to the forged through hole 11, forming a chamfer connected to the forged through hole 11 (for convenience, the trapezoidal channel formed between the adjacent two reinforcing portions 12 is represented as a chamfer below), in the process of forging the material to be processed by the forged mold core 1, the material to be processed is shaped in the forged through hole 11, and the shaped material to be processed enters the chamfer, since the distance between the adjacent two reinforcing portions 12 gradually increases away from the first surface, that is, the radial cross-sectional area of the chamfer gradually increases, the shaped material to be processed does not contact the surface of the reinforcing portion 12, so as to reduce the friction force received by the material to be processed, and at the same time, the presence of the reinforcing portion 12 can effectively increase the strength of the forged mold core 1 and improve the practicality of the forged mold core 1.

[0052] In another embodiment, the reinforcing portion 12 can also be arranged in a stepped shape, that is, the cross-sectional shape of the channel formed between the adjacent two reinforcing portions 12 can be a "convex" shape, which can increase the strength of the forged mold core 1, avoid the shaped material to be processed from contacting the surface of the reinforcing portion 12, and reduce the friction force received by the material to be processed.

[0053] ​In other embodiments, the surface of the reinforcing portion 12 can also be a circular arc segment, and the cross-sectional shape of the channel formed between two adjacent reinforcing portions 12 can be a trapezoid with circular arc sides, which can be inwardly curved or outwardly curved. In this way, the strength of the forging die core 1 can be increased, and the contact between the shaped material and the surface of the reinforcing portion 12 can be avoided, thereby reducing the frictional force on the material.

[0054] In summary, the surface of the reinforcing portion 12 and the cross-sectional shape of the channel formed between two adjacent reinforcing portions 12 are not limited in the present application, while the reinforcing portion 12 does not contact the shaped material and the strength of the forging die core 1 is increased.

[0055] Preferably, the cross-sectional shape of the channel formed between two adjacent reinforcing portions 12 is a trapezoid (with chamfered corners), which can effectively reduce the processing difficulty of the reinforcing portion 12, improve the processing efficiency of the forging die core 1, and improve the user experience of the forging die core 1.

[0056] Optionally, the height of the forging through hole 11 is less than the height of the reinforcing portion 12.

[0057] As described above, the smaller the height of the forging through hole 11, the smaller the resistance experienced by the material in the forging through hole 11. Therefore, in the present embodiment, the height of the forging through hole 11 is less than the height of the reinforcing portion 12, which reduces the resistance experienced by the material in the forging through hole 11, improves the strength of the forging die core 1, and improves the practicality of the forging die core 1.

[0058] Optionally, the height of each forging through hole 11 is less than the height of the air guide fin 22.

[0059] As described above, during the process of extruding the material into the forging through hole 11, the material is shaped in the forging through hole 11, and the shaped material enters the channel formed between two adjacent reinforcing portions 12. Since the minimum distance between the two adjacent reinforcing portions 12 is less than or equal to the diameter of the forging through hole 11, the shaped material does not contact the surface of the reinforcing portion 12, and the shaping of the shaped material can be accelerated.

[0060] The height of the forging passage 11 is less than the height of the air guide piece 22, that is, in the process of the material to be processed entering the forging passage 11 for shaping, the material to be processed does not need to contact the hole wall with the height corresponding to the height of the air guide piece 22, and after the material to be processed is shaped in the forging passage 11, it enters the channel formed by the adjacent two reinforcing parts 12 for shaping. On the basis of improving the shaping of the material to be processed, the contact area between the material to be processed and the hole wall of the forging passage 11 is reduced, the friction between the material to be processed and the hole wall is reduced, the resistance of the material to be processed being extruded into the forging passage 11 is reduced, the situation of the shaped material to be processed being broken and layered is avoided, and the demolding resistance of the shaped material to be processed on the forging passage 11 is reduced.

[0061] In an embodiment, the height of the forging passage 11 and the height of the reinforcing part 12 can be less than the height of the air guide piece 22. Since the forging passage 11 and the reinforcing part 12 need to be precisely machined, the total height of the forging passage 11 and the reinforcing part 12 can be reduced to reduce the machining difficulty of the forging passage 11.

[0062] It can be understood that in the process of the forging die core 1 forging the material to be processed, part of the material to be processed is extruded into the forging passage 11, the material to be processed is shaped in the forging passage 11, and enters the channel formed between the adjacent reinforcing parts 12 for shaping. Since both ends of the forging passage 11 are in communication with the external environment, as the material to be processed being pressed into the forging passage 11 increases, the height of the shaped material to be processed can be greater than the height of the required air guide piece 22. The user can trim the shaped material to be processed based on the required height after demolding the shaped material to be processed to form the air guide piece 22.

[0063] Optionally, as shown in Figure 3 The second surface of the forging die core 1 is provided with a protection piece 13, the protection piece 13 forms a containing space, the containing space is in communication with the forging passage 11, and the reinforcing part 12 is located in the containing space.

[0064] As described above, the sum of the height of the forging passage hole 11 and the height of the reinforcing part 12 is less than the height of the air guide fin 22, so that after passing through the channel formed by the forging passage hole 11 and the two adjacent reinforcing parts 12, one end of the shaped material to be processed will be exposed to the environment, and the exposed end will not be blocked in the circumferential direction by other structures. Since the forging core 1 moves during forging, the shaped material to be processed may collide with other components, which may cause the shaped material to be processed to be knocked out of shape or even broken. Therefore, the second surface of the forging core 1 is provided with a protective piece 13, and the accommodation space formed by the protective piece 13 is in communication with the forging passage hole 11, that is, the material to be processed will enter the accommodation space after being shaped by the forging passage hole 11, and the protective piece 13 will shield the shaped material to be processed in the circumferential direction to protect it.

[0065] In an embodiment, as shown in Figure 4 , Figure 4 is Figure 2 a structural schematic view of another view of the forging core. The side of the accommodation space away from the second surface can be in communication with the external environment to avoid the situation that the shaped material to be processed enters the accommodation space and causes the air pressure in the accommodation space to fluctuate, thereby affecting the forming efficiency of the material to be processed, improving the forging efficiency of the forging core 1 on the air guide fin 22, improving the practicability of the forging core 1, and reducing the processing difficulty of the protective piece 13.

[0066] In an embodiment, the height of the protective piece 13 and the height of the forging passage hole 11 can be greater than the height of the air guide fin 22, so that the shaped material to be processed can be located in the accommodation space, and the protective piece 13 protects the shaped material to be processed, thereby improving the practicability of the forging core 1.

[0067] In an embodiment, the height of the air guide fin 22 is 5-6 mm, and the height of each forging passage hole 11 is less than or equal to 1 mm.

[0068] In actual application, the required height of the air guide fin 22 is 5-6 mm, for example, 5.2 mm, and the thickness is 0.3 mm. The user experiments with the size of the forging passage hole 11 in the forging die based on the required height. Since different air guide fins 22 on the VR glasses cover 2 have different lengths, the length of the forging passage hole 11 is not limited in the following experimental details. The following experiments take the required height of the air guide fin 22 as an example:

[0069] Experiment 1:

[0070] The height of the forging passage hole 11 is 5.2mm and the width is 0.3mm, and no reinforcing part 12 is arranged. The material to be processed is forged under the conditions that the equipment pressure is 600T, the forming temperature is 350℃ (the temperature of the forging die), and the forging time is 20s. It is observed that the size of the air deflector on the forged shell does not match the required size of the air deflector 22, and cracking exists on the forged air deflector. After the forging die 1 is used for multiple times of forging, the deformation of the forging passage hole 11 on the forging die 1 is not obvious.

[0071] Experiment Two:

[0072] The height of the forging passage hole 11 is 3-5mm and the width is 0.3mm, and no reinforcing part 12 is arranged. The material to be processed is forged under the conditions that the equipment pressure is 600T, the forming temperature is 350℃, and the forging time is 20s. It is observed that the height of the air deflector on the forged shell is only 1-3mm, and cracking exists on part of the air deflector, which does not match the required size of the air deflector 22. After the forging die 1 is used for multiple times of forging, part of the forging passage hole 11 on the forging die 1 is deformed.

[0073] Experiment Three:

[0074] The height of the forging passage hole 11 is less than 3mm and the width is 0.3mm, and no reinforcing part 12 is arranged. The material to be processed is forged under the conditions that the equipment pressure is 600T, the forming temperature is 350℃, and the forging time is 20s. It is observed that the height of the air deflector on the forged shell is 1-5mm, and cracking exists on part of the air deflector, and the forging effect is unstable, which cannot produce the air deflector 22 in batches. After the forging die 1 is used for multiple times of forging, most of the forging passage hole 11 on the forging die 1 is deformed.

[0075] From the experimental results of Experiment One, Experiment Two and Experiment Three, it is concluded that reducing the height of the forging passage hole 11 helps to forge the material to be processed to form the air deflector 22, but the effect is not stable. At the same time, since no reinforcing part 12 is arranged to increase the strength of the forging die 1, when the height of the forging passage hole 11 is reduced, the forging die 1 is more likely to be deformed after multiple times of forging. Therefore, the user continues the following experiment:

[0076] Experiment Four:

[0077] The height of the forging passage hole 11 is 5.2mm and the width is 0.4mm, and no reinforcing part 12 is arranged. The material to be processed is forged under the conditions that the equipment pressure is 600T, the forming temperature is 350℃, and the forging time is 20s. It is observed that the size of the air deflector on the forged shell does not match the required size of the air deflector 22, and cracking exists on part of the forged air deflector. After the forging die 1 is used for multiple times of forging, the deformation of the forging passage hole 11 on the forging die 1 is not obvious.

[0078] From the experimental results of experiment one and experiment four, increasing the width of the forging hole 11 and slightly relieving the cracking of the forged wind guide piece can not completely solve the problem of the cracking of the forged wind guide piece.

[0079] In summary, from the data of experiments one to four, in the absence of the reinforcing portion 12, reducing the height of the forging hole 11 and increasing the width of the forging hole 11 can alleviate the cracking problem of the wind guide piece to some extent, but it cannot completely solve the problem of the cracking of the forged wind guide piece. At the same time, due to the reduction of the height of the forging 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 frequency of the forging die core 1 increases, the forging die core 1 is prone to deformation, which further affects the forging efficiency of the wind guide piece.

[0080] Based on the above experimental reagents, the following experiments are further performed. In the experiments, the reinforcing portion 12 is arranged on the second surface of the forging die core 1 to strengthen the strength of the forging die core 1. Adjacent two reinforcing portions 12 form a chamfer connected with the forging hole 11. The height of the forging hole 11, the taper of the chamfer and other parameters are adjusted:

[0081] Experiment five:

[0082] The height of the forging hole 11 is 1-5mm, the width is 0.4mm, there is a reinforcing portion 12, a chamfer connected with the forging hole 11 is formed, and the taper of the chamfer is 1°. Under the conditions of equipment pressure of 600T, molding temperature of 350℃, and forging time of 20s, the material to be processed is forged. It is observed that the height of the wind guide piece on the shell forged is 0.5-3mm, the thickness is 0.22-0.39mm, and part of the wind guide piece has cracking. The forging effect is unstable, and the wind guide piece 22 cannot be produced in batches; after using the forging die core 1 for multiple times of forging, the forging hole 11 on the forging die core 1 is not obviously deformed.

[0083] Experiment six:

[0084] The height of the forging hole 11 is 0.25-1mm, the width is 0.4mm, there is a reinforcing portion 12, a chamfer connected with the forging hole 11 is formed, and the taper of the chamfer is 1°. Under the conditions of equipment pressure of 600T, molding temperature of 350℃, and forging time of 20s, the material to be processed is forged. It is observed that the height of the wind guide piece on the shell forged is 8-20mm, the thickness is 0.3-0.39mm. After trimming the height of the forged wind guide piece, the required height of the wind guide piece 22 can be met, while the thickness of the forged wind guide piece is slightly larger than the required thickness of the wind guide piece 22; after using the forging die core 1 for multiple times of forging, the forging hole 11 on the forging die core 1 is not obviously deformed.

[0085] From the experimental results of experiment five and experiment six, it can be further indicated that reducing the height of the forging through hole 11 and reducing the contact area of the material to be processed in the forging through hole 11 can effectively reduce the resistance of the material to be processed being extruded into the forging through hole 11, avoid the situation that the material to be processed after shaping is broken and layered, and improve the preparation efficiency of the air guide piece 22 on the VR glasses cover body 2.

[0086] At the same time, by comparing the experimental results of experiment five and experiment six, and the experimental results of experiment two and experiment three, it can be obviously indicated that the setting of the reinforcing part 12 on the second surface of the forging die core 1 can effectively improve the strength of the forging die core 1.

[0087] Experiment seven:

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

[0089] Experiment eight:

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

[0091] From the experimental results of experiment six, experiment seven and experiment eight, it can be obtained that under the condition that the height of the forging through hole 11 is less than or equal to 1mm, the forging die core 1 can form a relatively ideal air guide piece 22 when forging the material to be processed, therefore, in this embodiment, the height of the forging through hole 11 is set to be less than or equal to 1mm when the height of the air guide piece 22 is 5-6mm.

[0092] Further comparing the experimental results of experiment six, the experimental results of experiment seven and the experimental results of experiment eight, it can be obtained that in the case that the taper of the chamfer is larger, the height of the forged air guide piece is smaller.

[0093] However, it is not that the larger the taper of the chamfer is, the better. Further considering the distance between the multiple chamfers, the taper of the chamfer and the setting height of the chamfer, since the distance between the multiple air guide pieces 22 on the VR glasses cover body 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 the adjacent two chamfers will intersect, that is, the height of the reinforcing part 12 is reduced, and from the foregoing, the reinforcing part 12 can be used to increase the strength of the forging die core 1, so that in the case that the height of the reinforcing part 12 is reduced, the strength of the forging die core 1 may be affected, so that the forging die core 1 is deformed after being forged for multiple times. Therefore, the embodiment of the present application selects the setting taper of the chamfer to be 2° in combination with the above multiple sets of experimental data, so as to balance the strength of the forging die core 1 in the case that the size of the formed air guide piece 22 meets the requirements.

[0094] In other embodiments, if the distance between the multiple chamfers is large (the width of the reinforcing part 12 is large), in the case that the size of the forged air guide piece 22 meets the requirements, a chamfer with a larger taper can also be selected, which is not limited by the present application.

[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 the two adjacent reinforcing parts 12 is trapezoidal, and the chamfer formed in connection with the forging through hole 11. In other embodiments, if the cross-sectional shape of the channel formed between the two adjacent reinforcing parts 12 is other shapes, other data settings can be provided, which is not limited by the present application.

[0096] Further, the user can set the width of the forging through hole 11 based on the required thickness of the air guide piece 22, set the height of the forging through hole 11 based on the required height of the air guide piece 22, etc. It can be understood that in the case that the size of the air guide piece 22 required by the user changes, the user can also set the size of the forging through hole 11 based on the size of the new air guide piece 22, which is not limited by the present application.

[0097] In summary, the forging die core 1 provided by the present application is provided with a forging through hole 11, and the shape of the forging through hole 11 is correspondingly set according to the shape of the air guide piece 22. Since the forging through hole 11 is in communication with the external environment, therefore, in the process of extruding the material to be processed into the forging through hole 11, the air pressure in the forging through hole 11 will not increase, and the extruded material to be processed will not be compressed, thereby reducing the situation of fracture and delamination of the shaped material.

[0098] Meanwhile, the second surface of the forging die core 1 is provided with at least one reinforcing portion 12, which is used to increase the strength of the forging die core 1 when the height of the forging through hole 11 is reduced. The reduction of 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 the material to be processed is extruded into the forging through hole 11, reduces the resistance of the material to be processed being extruded into the forging through hole 11, avoids the situation that the material to be processed after shaping is broken and layered, reduces the resistance of the material to be processed after shaping when demolding, and reduces the demolding difficulty of 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 deformed by the material to be processed during the forging process of the material to be processed, improves the safety of the forging die core 1, improves the preparation efficiency of the air guide piece 22 of the VR glasses cover body 2, and improves the user experience of the forging die.

[0099] Further, the second surface of the forging die core 1 is also provided with a protection piece 13, which is used to protect the material to be processed after shaping, and the material to be processed after shaping is circumferentially shielded to avoid the situation that the material to be processed after shaping is collided by other structures, improve the safety of the material to be processed after shaping, and improve the practicability of the forging die core 1.

[0100] The application also provides a forging die (not shown in the figure), which comprises a forging die core 1 and a fixed die core. The forging die core 1 and the fixed die core are correspondingly arranged. The surface of the fixed die core close to the forging die core 1 corresponds to the outer surface of the VR glasses cover body 2. The forging die core 1 close to the fixed die core moves and is attached to the fixed die core to form the VR glasses cover body 2 by forging. The outer surface of the VR glasses cover body 2 is the outer surface of the shell 21. The first surface of the forging die core 1 described above can be the surface of the forging die core 1 close to the fixed die core.

[0101] The forging die core 1 is provided with the forging through hole 11, which can be used for forging the air guide piece 22, that is, the air guide piece 22 can be forged at the same time when the forging die core 1 and the fixed die core are attached to forge the shell 21, so that the material to be processed is formed by one-time forging, the preparation steps of the VR glasses cover body 2 are reduced, the preparation efficiency of the VR glasses cover body 2 is improved, and the user experience of the forging die is improved.

[0102] The application also provides a forging device. Please refer to Figure 5 , Figure 5 which is a structural schematic diagram of an embodiment of the forging device of the application. The forging device A provided by the embodiment of the application comprises a forging die and a die holder assembly 3. The forging die is arranged on the die holder assembly 3. The die holder 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 are attached to form the VR glasses cover body 2 by forging.

[0103] Specifically, the die set assembly 3 comprises a first die set 31, a second die set 32 and a driving cylinder 33, the first die set 31 and the second die set 32 are arranged along the axial direction of the forging die, the forging die core 1 is arranged on the side of the first die set 31 close to the second die set 32, the fixed die core 4 is arranged on the side of the second die set 32 close to the first die set 31, one end of the driving cylinder 33 is arranged on the first die set 31, and the other end is arranged on the second die set 32, so as to drive the first die set 31 to move close to the second die set 32, so that the forging die core 1 and the fixed die core 4 are attached, and the material to be processed is forged.

[0104] Optionally, the die set assembly 3 further comprises a heating module 34, which is connected with the forging die to heat the forging die.

[0105] Further, in the process of attaching the forging die core 1 and the fixed die core 4 to forge the material to be processed, 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 by the material to be processed being extruded into the inside of the forging through hole 11, and improve the strength and toughness of the wind deflector 22 formed by forging.

[0106] Further, since the cross-sectional area of the second hole section 112 is larger than that of the first hole section 111, the material to be processed is shaped in the first hole section 111, and after entering the second hole section 112, the shaped material to be processed will not be in contact with the hole wall of the second hole section 112, that is, the heat on the forging die will not be transferred to the shaped material to be processed from the hole wall of the second hole section 112, thereby improving the shaping efficiency of the shaped material to be processed.

[0107] In summary, the forging device A provided by the present application comprises a forging die and a die set assembly 3. The heating module 34 in the die set assembly 3 is used to heat the forging die, so as to improve the strength of the VR glasses cover body 2 formed by the forging die, and improve the preparation efficiency of the VR glasses cover body 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 die as described above, and / or the forging device A, so as to prepare the VR glasses cover body 2, and the specific process comprises: placing the material to be processed between the forging die core 1 and the fixed die core 4, and attaching the forging die core 1 and the fixed die core 4; extruding the material to be processed by the forging die core 1 and the fixed die core 4, so that part of the material to be processed is extruded into the forging through hole 11, the first hole section 111 shapes the material to be processed, the shaped material to be processed is shaped into the second hole section 112, and after the user trims the shaped material to be processed, the VR glasses cover body 2 is formed.

[0109] Specifically, the user or the feeding 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 to drive the first die set 31 to move close to the second die set 32, so that the forging die core 1 moves close to the fixed die core 4, and finally realizes the adhesion of the forging die core 1 and the fixed die core 4, and the forging and pressing of 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 body 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 body 2, the forging die core 1 and the fixed die core 4 are adhered 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 extruded into the forging through hole 11, and since the shape of the forging through hole 11 corresponds to the shape of the air deflector 22, after the material to be processed is extruded 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 deflector 22.

[0111] Then, 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, and the VR glasses cover body 2 is obtained. The VR glasses cover body 2 is realized by one-time forging and forming, which improves the preparation efficiency of the VR glasses cover body 2 and improves the user's experience.

[0112] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A swage core characterized by, The VR glasses cover body is formed by forging and pressing, wherein the VR glasses cover body comprises a shell and a plurality of air guide fins 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 body to form the inner surface of the VR glasses cover body by forging and pressing; and the forging die core is provided with a forging through hole, the shape of the forging through hole corresponds to the shape of the air guide fin, and the forging through hole is used for forming the plurality of air guide fins by forging and pressing. The second surface of the forging die core is provided with a plurality of reinforcing portions, the second surface is arranged opposite to the first surface, the reinforcing portions extend away from the first surface, and the reinforcing portions are located between adjacent two forging through holes, and the projection of the reinforcing portions on the second surface does not overlap with the forging through hole. The minimum distance between adjacent two reinforcing portions is greater than or equal to the hole diameter of the forging through hole between adjacent two reinforcing portions, and the average distance between adjacent two reinforcing portions is greater than the hole diameter of the forging through hole between adjacent two reinforcing portions.

2. The swage core of claim 1, wherein, The distance between adjacent two reinforcing portions increases away from the first surface.

3. The swage core of claim 1 wherein, The height of the forging through hole is less than the height of the reinforcing portion.

4. The swage core of claim 1 wherein, The second surface of the forging die core is provided with a protection member, the protection member forms a containing space, the containing space communicates with the forging through hole, and the reinforcing portion is located in the containing space.

5. A forging die characterized by, The forging die core and the fixed die core are arranged correspondingly, the surface of the fixed die core close to the forging die core corresponds to the outer surface of the VR glasses cover body, and the forging die core moves close to the fixed die core and is attached to the fixed die core to form the VR glasses cover body by forging and pressing.

6. A forging device characterized by comprising: The forging device comprises the forging die and the die set assembly of claim 5, the forging die is arranged on the die set assembly, and the die set assembly drives the forging die to move close to the fixed die core so that the forging die and the fixed die core are attached to each other to form the VR glasses cover body by forging and pressing.

7. A method of using the forging die of claim 5, or the forging device of claim 6, characterized in that, The VR glasses cover body is formed by forging and pressing, wherein the VR glasses cover body comprises a shell and a plurality of air guide fins 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 body to form the inner surface of the VR glasses cover body by forging and pressing; and the forging die core is provided with a forging through hole, the shape of the forging through hole corresponds to the shape of the air guide fin, and the forging through hole is used for forming the plurality of air guide fins by forging and pressing. The second surface of the forging die core is provided with a plurality of reinforcing portions, the second surface is arranged opposite to the first surface, the reinforcing portions extend away from the first surface, and the reinforcing portions are located between adjacent two forging through holes, and the projection of the reinforcing portions on the second surface does not overlap with the forging through hole. The minimum distance between adjacent two reinforcing portions is greater than or equal to the hole diameter of the forging through hole between adjacent two reinforcing portions, and the average distance between adjacent two reinforcing portions is greater than the hole diameter of the forging through hole between adjacent two reinforcing portions. The distance between adjacent two reinforcing portions increases away from the first surface. The height of the forging through hole is less than the height of the reinforcing portion. The second surface of the forging die core is provided with a protection member, the protection member forms a containing space, the containing space communicates with the forging through hole, and the reinforcing portion is located in the containing space. The forging die core and the fixed die core are arranged correspondingly, the surface of the fixed die core close to the forging die core corresponds to the outer surface of the VR glasses cover body, and the forging die core moves close to the fixed die core and is attached to the fixed die core to form the VR glasses cover body by forging and pressing. The forging device comprises the forging die and the die set assembly of claim 5, the forging die is arranged on the die set assembly, and the die set assembly drives the forging die to move close to the fixed die core so that the forging die and the fixed die core are attached to each other to form the VR glasses cover body by forging and pressing. The VR glasses cover body is formed by forging and pressing, wherein the VR glasses cover body comprises a shell and a plurality of air guide fins 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 body to form the inner surface of the VR glasses cover body by forging and pressing; and the forging die core is provided with a forging through hole, the shape of the forging through hole corresponds to the shape of the air guide fin, and the forging through hole is used for forming the plurality of air guide fins by forging and pressing. The second surface of the forging die core is provided with a plurality of reinforcing portions, the second surface is arranged opposite to the first surface, the reinforcing portions extend away from the first surface, and the reinforcing portions are located between adjacent two forging through holes, and the projection of the reinforcing portions on the second surface does not overlap with the forging through hole. The minimum distance between adjacent two reinforcing portions is greater than or equal to the hole diameter of the forging through hole between adjacent two reinforcing portions, and the average distance between adjacent two reinforcing portions is greater than the hole diameter of the forging through hole between adjacent two reinforcing portions. The distance between adjacent two reinforcing portions increases away from the first surface. The height of the forging through hole is less than the height of the reinforcing portion. The second surface of the forging die core is provided with a protection member, the protection member forms a containing space, the containing space communicates with the forging through hole, and the reinforcing portion is located in the containing space. The forging die core and the fixed die core are arranged correspondingly, the surface of the fixed die core close to the forging die core corresponds to the outer surface of the VR glasses cover body, and the forging die core moves close to the fixed die core and is attached to the fixed die core to form the VR glasses cover body by forging and pressing. The forging device comprises the forging die and the die set assembly of claim 5, the forging die is arranged on the die set assembly, and the die set assembly drives the forging die to move close to the fixed die core so that the forging die and the fixed die core are attached to each other to form the VR glasses cover body by forging and pressing.

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