Improved carbon fiber rim forming die

Abstract

The utility model belongs to the technical field of carbon fiber wheel rim dies, and particularly relates to an improved carbon fiber wheel rim forming die which comprises an upper die and a lower die, a forming middle die is further arranged between the upper die and the lower die, and when the dies are closed, the upper die, the lower die and the forming middle die are overlapped to form an integral forming die. According to the improved carbon fiber rim forming die, the inner wall of the forming die cavity is improved to be in a continuous streamline wave shape, so that resin can flow more uniformly and stably in the heating forming process, and the structural performance stability and the surface quality of a carbon fiber rim are improved; a quartering three-layer forming middle mold dislocation structure is adopted, the carbon fiber rim is subjected to barb forming under T mold pressing, the size and the shape are accurately controlled, and no deviation or deformation is generated; and the middle mold ring, the upper mold ring and the lower mold ring are arranged in a staggered manner, so that poor impact resistance caused by excessive stress concentration in a mold closing line area of a resin overflow stroke in the forming process is effectively dispersed.

Description

TECHNICAL FIELD

[0001] The utility model relates to carbon fiber wheel rim mould technical field especially relates to an improved carbon fiber wheel rim forming die. BACKGROUND

[0002] In the existing carbon fiber wheel rim forming technology, the inner wall of the forming cavity is designed as a simple straight line or a smooth curve, which leads to uneven resin flow during the heating forming process, and the carbon fiber material cannot be fully penetrated, thereby affecting the structural performance stability and surface quality of the carbon fiber wheel rim. In the high-pressure forming process, due to the limitation of the mold structure, the resin is easy to overflow in the mold line area, causing excessive stress concentration, resulting in a decrease in the impact resistance of the carbon fiber wheel rim. Finally, due to the insufficient precision of the mold structure, the stress during the forming process cannot be effectively dispersed, causing the carbon fiber wheel rim to be easily damaged when impacted, affecting the service life and safety of the wheel rim. Therefore, an improved carbon fiber wheel rim forming die is needed. SUMMARY

[0003] Based on the existing technical problems, the utility model provides an improved carbon fiber wheel rim forming die.

[0004] The utility model discloses an improved carbon fiber wheel rim forming die, which comprises an upper die and a lower die, and a forming middle die is further arranged between the upper die and the lower die. When the mold is closed, the upper die, the lower die and the forming middle die are stacked to form an integral forming die. The bottom surface of the upper die, the top surface of the lower die and the inner circle of the forming middle die are all provided with a forming cavity. The prefabricated carbon fiber wheel embryo is placed inside the forming cavity. The inner wall of the forming cavity is in a continuous streamline wave shape.

[0005] Preferably, the outer shape of the upper die is provided with a limiting clamping groove around the surface. The bottom of the upper die is provided with a plug-in groove, an upper die forming cavity and a plurality of pin clamping holes. The outer surface of the forming middle die is slidably inserted into the inner wall of the plug-in groove.

[0006] Preferably, the two end surfaces of the lower die are provided with clamping limiting bosses. The two clamping limiting bosses are symmetrically arranged. The top of the lower die is provided with a lower die forming cavity and a pin locking hole. When the upper die and the lower die are installed, the pin clamping hole is inserted and guided by the pin and the pin locking hole.

[0007] Preferably, the outer arc surface of the forming middle die is fixedly provided with a plurality of supporting plate ears, which are arranged in a ring array on the outer arc surface of the forming middle die.

[0008] Preferably, the top surface of the forming middle die is further provided with an auxiliary via hole. The plurality of auxiliary via holes are sleeved and limited by the pin during the installation of the upper die and the lower die.

[0009] Preferably, the forming middle die is composed of an upper die ring, a middle die ring and a lower die ring, the outer circular surface of the upper die ring is tapered, the inner wall of the upper die ring, the inner wall of the middle die ring and the inner wall of the lower die ring are all provided with a side forming cavity, the four semi-arc shaped lower die rings are placed in sequence on the lower die, the four semi-arc shaped middle die rings are placed in sequence on the middle die, and the abutting portions of the four semi-arc shaped upper die rings are connected to the abutting portions of the four semi-arc shaped lower die rings.

[0010] Preferably, the bottom side of the upper die is also provided with a sliding block groove, a gas nozzle sliding block is slidingly inserted into the inner wall of the sliding block groove, the bottom of the gas nozzle sliding block is in contact with the one end protruding block of the forming middle die, and the one end surface of the gas nozzle sliding block and the one end surface of the forming middle die are both provided with a gas nozzle insertion hole.

[0011] The beneficial effects in the utility model are:

[0012] The device improves the inner wall of the forming cavity to be a continuous streamline wave shape, so that the resin can flow more uniformly and stably during heating and forming, improves the structural performance stability and surface quality of the carbon fiber wheel rim, adopts a four-equal-part three-layer forming middle die staggered structure to form a carbon fiber wheel rim underhook under T die pressure, accurately controls the size and modeling, and no deviation and deformation occur, the middle die ring is installed in a staggered manner with the upper die ring and the lower die ring, effectively disperses the excessive stress concentration in the mold line area caused by the resin overflow stroke in the forming process, and improves the poor impact resistance. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structure diagram of an improved carbon fiber wheel rim forming die;

[0014] Figure 2 It is a three-dimensional view of an upper die structure of an improved carbon fiber wheel rim forming die;

[0015] Figure 3 It is a three-dimensional view of a lower die structure of an improved carbon fiber wheel rim forming die;

[0016] Figure 4 It is a three-dimensional exploded view of a forming middle die structure of an improved carbon fiber wheel rim forming die;

[0017] Figure 5 It is a three-dimensional view of a forming cavity structure of an improved carbon fiber wheel rim forming die.

[0018] In the figure: 1, upper die; 11, limit clamping groove; 12, plug-in groove; 13, upper die forming cavity; 14, pin clamping hole; 2, lower die; 21, clamping limit boss; 22, lower die forming cavity; 23, pin locking hole; 3, forming middle die; 31, auxiliary via; 32, upper die ring; 33, middle die ring; 34, lower die ring; 35, side forming cavity; 4, forming cavity; 5, support plate ear; 6, slider groove; 7, air nozzle slider; 8, air nozzle plug-in hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0020] Reference Figures 1-5 An improved carbon fiber rim forming die, comprising an upper die 1 and a lower die 2, and a forming middle die 3 is further arranged between the upper die 1 and the lower die 2, when the die is closed, the upper die 1, the lower die 2 and the forming middle die 3 are stacked to form an integral forming die, the bottom surface of the upper die 1, the top surface of the lower die 2 and the inner circle of the forming middle die 3 are all provided with a forming cavity 4, a prefabricated carbon fiber rim embryo is placed inside the forming cavity 4, and the inner wall of the forming cavity 4 is in a continuous streamline wave shape.

[0021] The outer shape of the upper die 1 is provided with a limit clamping groove 11 around the surface, the bottom of the upper die 1 is respectively provided with a plug-in groove 12, an upper die forming cavity 13 and a plurality of pin clamping holes 14, and the peripheral surface of the forming middle die 3 is slidably plugged with the inner wall of the plug-in groove 12.

[0022] In this way, the limit clamping groove 11 can facilitate the fixing and installation of the upper die 1 during operation, the pin clamping hole 14 ensures the accurate alignment between the upper die 1, the forming middle die 3 and the lower die 2, reduces the error during die assembly, and improves the precision of the rim forming; the design of the plug-in groove 12 helps to fix the forming middle die 3, prevents the movement of the forming middle die 3 during the forming process, and thus improves the stability of the entire die system.

[0023] The lower die 2 is provided with a clamping limit boss 21 on both end surfaces, the two clamping limit bosses 21 are symmetrically arranged, the top of the lower die 2 is respectively provided with a lower die forming cavity 22 and a pin locking hole 23, and when the upper die 1 and the lower die 2 are installed, the pin clamping hole 14 is plugged and guided for installation through the pin and the pin locking hole 23.

[0024] In this way, the pin locking hole 23 and the pin clamping hole 14 are used for pin plug-in installation, which simplifies the die assembly process and improves the assembly efficiency.

[0025] The outer circular arc surface of the forming middle mold 3 is fixedly provided with a plurality of supporting plate ears 5, and the supporting plate ears 5 are arranged in a ring array on the outer circular arc surface of the forming middle mold 3.

[0026] Specifically, the supporting plate ears 5 help to keep the shape and position stability of the forming middle mold 3, ensure that the mold does not displace in the high-temperature and high-pressure forming environment, prevent the carbon fiber from displacing during the forming process, ensure that the fiber is solidified according to the predetermined direction and arrangement, and improve the performance of the wheel rim.

[0027] The top surface of the forming middle mold 3 is also provided with a plurality of auxiliary through holes 31, and the auxiliary through holes 31 are limited by the pin sleeves during the installation of the upper mold 1 and the lower mold 2.

[0028] Specifically, the cooperation of the auxiliary through holes 31 and the pins can accurately control the relative positions of the upper mold 1, the forming middle mold 3 and the lower mold 2, ensure the positioning accuracy of the mold, and thus improve the forming precision of the product; the limiting action of the auxiliary through holes 31 and the pins can prevent the mold from accidentally opening during the high-pressure forming process, thereby improving the safety of the production process.

[0029] The forming middle mold 3 is composed of an upper mold ring 32, a middle mold ring 33 and a lower mold ring 34, the outer circular arc surface of the upper mold ring 32 is tapered, the inner walls of the upper mold ring 32, the middle mold ring 33 and the lower mold ring 34 are all provided with side forming cavities 35, and the four semicircular lower mold rings 34 are placed on the lower mold 2 in a head-to-tail manner during the installation of the forming middle mold 3, then the four semicircular middle mold rings 33 are sequentially placed, and the butt joints of the head-to-tail connection are connected in a staggered manner with the butt joints of the four semicircular lower mold rings 34, and finally the four semicircular upper mold rings 32 are placed on the top of the middle mold ring 33.

[0030] Specifically, the taper design makes the forming middle mold 3 easily inserted into the insertion slot 12 of the upper mold 1 and automatically centered, thereby improving the installation efficiency and positioning accuracy; the taper cooperation has a certain self-locking effect, which can keep the position of the forming middle mold 3 without additional fixation, and prevent it from moving during the forming process; and the forming middle mold 3 is composed of the upper mold ring 32, the middle mold ring 33 and the lower mold ring 34, which can be disassembled for demolding after forming, and the four-equal-division three-layer forming middle mold 3 staggered structure can form the carbon fiber wheel rim underhook under the 200T mold pressure, accurately control the size and shape, and prevent deviation and deformation.

[0031] The bottom side of the upper die 1 is further provided with a slider groove 6, and a gas nozzle slider 7 is slidingly inserted into the inner wall of the slider groove 6. The bottom of the gas nozzle slider 7 is in contact with an end protrusion of the forming middle die 3, and the end surface of the gas nozzle slider 7 and the end surface of the forming middle die 3 are both provided with a gas nozzle insertion hole 8.

[0032] Specifically, the design of the slider groove 6 and the gas nozzle slider 7 ensures the clamping and positioning effect of the tire gas nozzle pipe. The setting of the gas nozzle insertion hole 8 facilitates the non-interference effect of the tire gas nozzle pipe.

[0033] The device improves the inner wall of the forming die cavity 4 to be a continuous streamline wave shape, so that the resin can flow more uniformly and stably during the heating forming process, and the carbon fiber wheel structure performance stability and surface quality are improved. The four-equal three-layer forming middle die 3 staggered structure is used to form the carbon fiber wheel hook under the condition of 200T mold pressing, and the size and modeling are accurately controlled, and no deviation and deformation occurs. The middle die ring 33 is installed and arranged in a staggered manner with the upper die ring 32 and the lower die ring 34, which effectively disperses the excessive stress concentration in the mold line area caused by the resin overflow stroke in the forming process, thereby improving the poor impact resistance.

[0034] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An improved carbon fiber wheel rim forming mold characterized by: The application relates to a carbon fiber wheel rim forming die, which comprises an upper die (1) and a lower die (2), and a forming middle die (3) is arranged between the upper die (1) and the lower die (2); when the die is closed, the upper die (1), the lower die (2) and the forming middle die (3) are stacked to form an integrated forming die; the bottom surface of the upper die (1), the top surface of the lower die (2) and the inner circle of the forming middle die (3) are all provided with forming cavities (4); a prefabricated carbon fiber wheel rim embryo is arranged in the forming cavities (4); and the inner wall of the forming cavities (4) is in a continuous streamline wave shape.

2. The improved carbon fiber wheel rim forming mold according to claim 1, wherein: The outer surface of the upper die (1) is provided with a limiting clamping groove (11); the bottom of the upper die (1) is provided with an insertion groove (12), an upper die forming cavity (13) and a plurality of pin clamping holes (14); and the peripheral surface of the forming middle die (3) is slidably inserted into the inner wall of the insertion groove (12).

3. The improved carbon fiber wheel rim forming mold according to claim 2, wherein: The two end surfaces of the lower die (2) are provided with clamping limiting bosses (21); the two clamping limiting bosses (21) are symmetrically arranged; the top of the lower die (2) is provided with a lower die forming cavity (22) and a pin locking hole (23); and when the upper die (1) and the lower die (2) are installed, the pin clamping holes (14) are inserted into the pin locking hole (23) through the pin.

4. The improved carbon fiber wheel rim forming mold of claim 1, wherein: The outer arc surface of the forming middle die (3) is fixedly provided with a plurality of supporting plate ears (5) which are arranged in an annular array on the outer arc surface of the forming middle die (3).

5. The improved carbon fiber wheel rim forming mold of claim 1, wherein: The top surface of the forming middle die (3) is also provided with a plurality of auxiliary through holes (31) which are used for sleeving and limiting the pins when the upper die (1) and the lower die (2) are installed.

6. The improved carbon fiber wheel rim forming mold of claim 2, wherein: The forming middle die (3) is composed of an upper die ring (32), a middle die ring (33) and a lower die ring (34); the outer arc surface of the upper die ring (32) is arranged in a taper shape; the inner wall of the upper die ring (32), the inner wall of the middle die ring (33) and the inner wall of the lower die ring (34) are all provided with side forming cavities (35); when the forming middle die (3) is installed, the four semicircular lower die rings (34) are placed on the lower die (2) in a head-to-tail mode, then the four semicircular middle die rings (33) are sequentially placed, the butt joints of the head-to-tail mode are connected in a staggered mode with the butt joints of the four semicircular lower die rings (34), and finally the four semicircular upper die rings (32) are placed on the top of the middle die ring (33).

7. The improved carbon fiber wheel rim forming mold of claim 1, wherein: The bottom side of the upper die (1) is also provided with a sliding block groove (6); a gas nozzle sliding block (7) is slidably inserted into the inner wall of the sliding block groove (6); the bottom of the gas nozzle sliding block (7) is in contact with one end of the forming middle die (3); and one end surface of the gas nozzle sliding block (7) and one end surface of the forming middle die (3) are both provided with a gas nozzle insertion hole (8).

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