Forming die for brake disc with heat dissipation air duct

Abstract

The utility model belongs to the technical field of automobile brake accessories, and particularly discloses a brake disc forming die with a heat dissipation air duct, which comprises a female die assembly, a grooved wheel disc, a central punch, a lower punch and a plurality of heat dissipation air duct core dies, the heat dissipation air duct core molds correspond to the forming holes one to one and are slidably connected into the forming holes, the grooved wheel disc is rotationally connected to the female mold assembly, a plurality of arc-shaped holes corresponding to the heat dissipation air duct core molds one to one are formed in the grooved wheel disc in the circumferential direction, and a core mold pushing shaft is fixed to each heat dissipation air duct core mold. The core mold pushing shafts slide in the corresponding arc-shaped holes, and the grooved wheel disc rotates to drive the cooling air duct core molds to slide in the forming holes. The female die assembly, the upper punch, the lower punch and the center punch form a forming cavity of the brake disc. According to the technical scheme, the cooling air duct core molds do not need to be manually drawn one by one in the production process, operation steps are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile brake accessories, in particular to a brake disc forming die with a heat dissipation air duct. Background Art

[0002] The automobile disc is composed of a brake disc connected to the wheel and a brake caliper located at the edge of the brake disc. When braking, the high-pressure brake oil pushes the brake pad to make the brake caliper clamp the brake disc to produce a braking effect. A ventilated brake disc is a disc with many ventilation holes or ventilation channels on the side of the brake disc. The ventilated brake disc uses airflow to dissipate heat, and the cooling effect is better than that of an ordinary brake disc. The materials of the brake disc mainly include semi-metal, low metal, composite ceramic and steel. When a ventilated brake disc is produced by powder metallurgy, a hydraulic press is required to press the metal powder in the mold into a blank. During the blank production process, a ventilation channel needs to be set on the side (cylindrical surface) of the brake disc. The prior art discloses a brake disc production device, a production method and a brake disc (CN113714501B). The ventilation channel on the side (cylindrical surface) in the patent is formed by a strip aluminum mold inserted into the mold. During the production process, the aluminum strips formed by the strip aluminum mold need to be manually extracted one by one, and the production efficiency is low. Utility Model Content

[0003] The utility model aims to provide a brake disc forming die with a heat dissipation duct to solve the problem that when a brake disc with a heat dissipation duct is manufactured by a powder metallurgy method, strip aluminum molds need to be extracted one by one, resulting in a long production cycle and low efficiency.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is: a brake disc forming mold with a heat dissipation duct, comprising a female mold assembly, a groove wheel disk, a center punch, a lower punch and a plurality of heat dissipation duct core molds, the female mold assembly is provided with a plurality of forming holes around the female mold assembly, the heat dissipation duct core mold corresponds to the forming holes one by one and the heat dissipation duct core mold is slidably connected inside the forming holes, the groove wheel disk is rotatably connected to the female mold assembly, the groove wheel disk is circumferentially provided with a plurality of arc holes corresponding to the heat dissipation duct core molds one by one, each of the heat dissipation duct core molds is fixed with a core mold push shaft, the core mold push shaft slides in the corresponding arc hole, and the rotation of the groove wheel disk drives the heat dissipation duct core mold to slide in the forming hole; a first through hole is provided in the center of the female mold assembly, the upper punch and the lower punch can slide in the first through hole, a second through hole is provided in the center of the upper punch and the lower punch, the center punch can slide inside the second through hole, and the female mold assembly, the upper punch, the lower punch and the center punch constitute a forming chamber for the brake disc.

[0005] Furthermore, one side of the heat dissipation duct core mold used for forming the heat dissipation duct is set to be conical.

[0006] Furthermore, a support plate is fixed to the circumference of the female mold assembly, and the support plate is used to support the groove wheel disc.

[0007] Furthermore, it also includes a driving device, which is used to drive the groove wheel to rotate.

[0008] Furthermore, the driving device adopts an oil cylinder, an air cylinder, a hydraulic cylinder, a gear, a rack, and a linear push rod.

[0009] The working principle of this technical solution is:

[0010] (1) The female mold assembly and the center punch rise to form a loading cavity and fill it with powder.

[0011] (2) When there is no driving device, we can manually push the groove wheel to work. If a driving device is set, start the driving device, and the driving device drives the groove wheel to rotate counterclockwise, pushing the heat dissipation duct core mold to the center of the material layer thickness, and the upper and lower punches pressurize the powder.

[0012] (3) The upper punch, lower punch and center punch reach the set stroke end position. The mold is in a static pressure state at this time. The pressure is released and the drive device is started to drive the groove wheel. The arc hole on the groove wheel pushes the core mold push shaft. The core mold push shaft drives the heat dissipation duct core mold to return to its original position. At this time, the groove wheel rotates clockwise, and the female mold assembly and the center punch return to the original position. The brake disc with the heat dissipation duct is taken out of the mold.

[0013] The beneficial effect of the present technical solution is that the driving device in the present technical solution drives the groove wheel to drive the core mold push shaft fixed on the heat dissipation duct core mold to slide in the corresponding arc hole. The size, direction and angle of the arc hole determine the stroke of the core mold push shaft. During the production process, there is no need to manually extract the heat dissipation duct core molds one by one. The stroke of each heat dissipation duct core mold is consistent, which reduces the operating steps and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural cross-sectional view of a brake disc forming mold with a heat dissipation duct according to the utility model;

[0015] Figure 2 It is a plan view of a brake disc forming mold with a heat dissipation duct according to the utility model;

[0016] Figure 3 This is a cross-sectional view of a finished product of a brake disc forming mold with a heat dissipation duct according to the utility model. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods:

[0018] The figure marks in the drawings of the specification include: core mold driving shaft 1, upper punch 2, female mold plate 3, groove pulley 4, hinge shaft 5, support plate 6, female mold 7, center punch 8, lower punch 9, heat dissipation duct core mold 10, female mold assembly 11, second through hole 12, arc hole 13, driving device 14, brake disc 15, heat dissipation duct 16.

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The embodiment is basically as shown in the attached Figure 1-3 As shown: A brake disc forming mold with a heat dissipation duct is used to form Figure 3 The brake disc 15 with the heat dissipation duct 16 is shown. The overall structure is as follows Figure 1 As shown, it includes a driving device 14, an upper punch 2, a core mold driving shaft 1, a female mold assembly 11, a groove wheel disc 4, a center punch 8, a lower punch 9 and a plurality of heat dissipation duct core molds 10. The female mold assembly 11 includes a female mold plate 3 and a female mold 7. A stepped hole is provided at the center of the female mold plate 3. The shape of the female mold 7 matches the stepped hole of the female mold plate 3. A threaded hole is provided on the end face of the large diameter end of the stepped hole of the female mold plate 3. A bolt through hole is provided at the position where the female mold 7 matches the threaded hole of the female mold plate 3. The bolt passes through the bolt through hole of the female mold 7 and is fixed with the threaded hole of the female mold plate 3. The female mold 7 and the female mold plate 3 form a female mold assembly 11. A plurality of forming holes are provided around the female mold assembly 11, and the length direction of the forming hole is consistent with the radial direction of the groove wheel disc 4. The heat dissipation duct core mold 10 corresponds to the forming hole one by one and the heat dissipation duct core mold 10 is slidably connected inside the forming hole. The heat dissipation duct core mold 10 is used to form the heat dissipation duct 16. One side is set as a cone. A support plate 6 is fixed to the circumference of the female mold plate 3. The support plate 6 is L-shaped. The support plate 6 is in contact with the groove wheel disc 4 in the horizontal direction to support the groove wheel disc 4, and is fixed to the female mold plate 3 in the vertical direction.

[0021] like Figure 2 As shown, the groove wheel plate 4 is provided with a plurality of arc holes 13 corresponding to the heat dissipation duct core mold 10 in the circumferential direction. Figure 1As shown, a core mold driving shaft 1 is fixed to the lower side of each heat dissipation duct core mold 10, and the lower end of the core mold driving shaft 1 slides in the arc hole 13 corresponding to the groove wheel plate 4. The rotation of the groove wheel plate 4 drives the heat dissipation duct core mold 10 to slide in the forming hole. The driving device 14 is used to drive the groove wheel plate 4 to rotate. The driving device 14 adopts an oil cylinder, an air cylinder, a hydraulic cylinder, a gear, a rack, and a linear push rod. When the oil cylinder is used as the driving device 14, the output end of the driving device 14 is equipped with a hinge shaft 5. The groove wheel plate 4 is provided with a hinge shaft hole connected to the hinge shaft 5. The lower end of the hinge shaft 5 is movably connected to the output end of the driving device 14, and the upper end is fixedly connected to the hinge shaft hole of the groove wheel plate 4 to form a driving component. The air cylinder, the hydraulic cylinder, the gear, the rack, and the linear push rod can all be connected to the groove wheel plate 4 in the above-mentioned movably connected structural form. When the driving device 14 adopts a gear or a rack, a toothed belt is provided in the circumference of the groove wheel disc 4, and the toothed belt is meshed with the gear or the rack. The rotation of the gear or the movement of the rack drives the toothed belt to rotate, and the rotation of the toothed belt drives the groove wheel disc 4 to move. A first through hole is provided at the center of the female mold assembly 11, and the upper punch 2 and the lower punch 9 can slide in the first through hole. A second through hole 12 is provided at the center of the upper punch 2 and the lower punch 9, and the center punch 8 can slide inside the second through hole 12. The upper punch 2, the lower punch 9, the center punch 8 and the female mold assembly 11 form a forming chamber of the brake disc 15, which is used to make the brake disc 15 with a heat dissipation duct 16.

[0022] The specific implementation process is as follows:

[0023] The female mold assembly 11 and the center punch 8 rise to form a charging mold cavity, which is filled with powder.

[0024] When there is no driving device 14, we can manually push the groove wheel disc 4 to work. If the driving device 14 is set, start the driving device 14, and the driving device 14 drives the groove wheel disc 4 to rotate counterclockwise, pushing the heat dissipation duct core mold 10 to the center position of the material layer thickness, and the upper punch 2 and the lower punch 9 pressurize the powder.

[0025] The upper punch 2, the lower punch 9 and the center punch 8 reach the set stroke end position. The mold is in a static pressure state at this time. The pressure is released and the driving device 14 is started to drive the groove wheel 4. The arc hole 13 on the groove wheel 4 pushes the core mold push shaft 1. The core mold push shaft 1 drives the heat dissipation duct core mold 10 to return to its original position. At this time, the groove wheel 4 rotates clockwise, and the female mold assembly 11 and the center punch 8 retreat, and the brake disc 15 with the heat dissipation duct 16 is taken out of the mold.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A brake disc forming mold with a heat dissipation duct, characterized in that: The invention comprises a female mold component (11), a groove wheel disc (4), a center punch (8), a lower punch (9) and a plurality of heat dissipation duct core molds (10); the female mold component (11) is provided with a plurality of forming holes around it; the heat dissipation duct core mold (10) corresponds to the forming holes one by one and the heat dissipation duct core mold (10) is slidably connected inside the forming holes; the groove wheel disc (4) is rotatably connected to the female mold component (11); the groove wheel disc (4) is provided with a plurality of arc holes (13) corresponding to the heat dissipation duct core mold (10) in a circumferential direction; each of the heat dissipation duct core molds (10) is fixed with a core mold push rod. The movable shaft (1) and the core mold push shaft (1) slide in the corresponding arc hole (13), and the groove wheel (4) rotates to drive the heat dissipation duct core mold (10) to slide in the forming hole; the center of the female mold component (11) is provided with a first through hole, and the upper punch (2) and the lower punch (9) can slide in the first through hole, and the center of the upper punch (2) and the lower punch (9) is provided with a second through hole (12), and the center punch (8) can slide inside the second through hole (12); the female mold component (11), the upper punch (2), the lower punch (9) and the center punch (8) constitute a forming chamber of the brake disc (15).

2. The brake disc forming mold with a heat dissipation duct according to claim 1, characterized in that: One side of the heat dissipation air duct core mold (10) used for forming the heat dissipation air duct (16) is set in a conical shape.

3. The brake disc forming mold with a heat dissipation duct according to claim 1, characterized in that: A support plate (6) is fixed in the circumference of the female mold assembly (11), and the support plate (6) is used to support the groove wheel disc (4).

4. The brake disc forming mold with a heat dissipation duct according to claim 1, characterized in that: It also comprises a driving device (14), wherein the driving device (14) is used for driving the groove wheel disc (4) to rotate.

5. The brake disc forming mold with heat dissipation duct according to claim 4, characterized in that: The driving device (14) adopts an oil cylinder, an air cylinder, a hydraulic cylinder, a gear, a rack, and a linear push rod.

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