Brake support casting mold, blank and brake support

Abstract

The brake support casting mold comprises a positive pressing plate and a negative pressing plate which move relatively, the negative pressing plate is provided with a first positioning part front mold and a second positioning part front mold which are oppositely arranged, the inner side of the first positioning part front mold and the inner side of the second positioning part front mold are connected to form a first inclined face, and the inner side of the first positioning part front mold and the inner side of the second positioning part front mold are connected to form a second inclined face. A first positioning part rear mold and a second positioning part rear mold which are oppositely arranged are arranged on the positive pressing plate, the inner side of the first positioning part front mold and the inner side of the second positioning part rear mold are connected to form a second inclined surface, and the inclination direction of the first inclined surface is consistent with that of the second inclined surface. The brake disc groove blank is changed into an inclined groove through the first inclined face and the second inclined face, drawing depth is reduced, drawing is facilitated, sand core production can be carried out without newly adding procedures, sand core assembling procedures are reduced, production cost is reduced, production efficiency is improved, and the quality of an automobile brake support blank is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting molds for automobile brake parts, in particular to a brake bracket casting mold, a blank and a brake bracket. Background Art

[0002] Brakes are one of the most important components in a car, ensuring vehicle safety. The automotive brake bracket is a key component of this system, and its quality and performance are crucial. Currently, during the casting and manufacturing process of automotive brake bracket blanks, due to the use of a mold-following right-angle demolding method, some narrow, slender, deep-cavity structures cannot be demolded, which can easily cause the sand mold to break. Deep-cavity structures cannot be demolded with their own cores and require core insertion for manufacturing. This requires a new process for sand core production, which is then assembled to produce the finished product. This increases costs, reduces efficiency, and makes quality control of the manufactured automotive brake bracket blanks more difficult.

[0003] Existing technologies related to brake brackets, such as patent number CN218460785U, a mold casting system for reducing sand and slag holes in automotive brake brackets, and patent number CN201753736U, a high-strength, high-toughness automotive brake bracket, primarily involve optimizing casting systems and bracket blank materials, with less attention to optimizing and adjusting the bracket blank's own structure. This application aims to address the traditional manufacturing process for deep-cavity brackets, requiring cores to be inserted, by designing an automotive brake bracket blank with its own core. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a brake bracket casting mold, blank and brake bracket, which solves the technical problem that the traditional process of the current automobile brake bracket adopts a right-angle demolding method, the deep cavity structure is not easy to demold, and a core is required to realize production and manufacturing, thereby improving the quality of the automobile brake bracket blank and the production efficiency.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a brake bracket casting mold, including a positive pressure plate and a back pressure plate that move relatively, the back pressure plate is provided with a first positioning part front mold and a second positioning part front mold that are relatively set, the inner side of the first positioning part front mold is connected to the inner side of the second positioning part front mold to form a first inclined surface, the positive pressure plate is provided with a first positioning part rear mold and a second positioning part rear mold that are relatively set, the inner side of the first positioning part front mold is connected to the inner side of the second positioning part rear mold to form a second inclined surface, and the inclination directions of the first inclined surface and the second inclined surface are consistent.

[0006] As a further improvement of the present invention: along the direction from the positive pressure plate to the negative pressure plate, the distance between the outer side of the front mold of the first positioning part and the outer side of the front mold of the second positioning part and the first inclined surface gradually decreases; along the direction from the negative pressure plate to the positive pressure plate, the distance between the outer side of the rear mold of the first positioning part and the outer side of the rear mold of the second positioning part and the second inclined surface gradually decreases.

[0007] As a further improvement of the present invention: the draft angle range of the first inclined surface is 30° to 60°, the draft angle range of the second inclined surface is 30° to 60°, and the draft angle of the first inclined surface is the same as the draft angle of the second inclined surface.

[0008] As a further improvement of the present invention: the draft angle of the first inclined surface is 45°, and the draft angle of the second inclined surface is 45°.

[0009] As a further improvement of the present invention: the draft angle of the first inclined surface is 30°, and the draft angle of the second inclined surface is 30°.

[0010] As a further improvement of the present invention: the back pressure plate is also provided with a first fixed beam front mold, a second fixed beam front mold and an inclined beam front mold located on both sides, and the first positioning part front mold is respectively provided at both ends of the first fixed beam front mold near the inclined beam front mold, and the second positioning part front mold is respectively provided at both ends of the second fixed beam front mold near the inclined beam front mold.

[0011] As a further improvement of the present invention: the positive pressure plate is also provided with a first fixed beam rear mold, a second fixed beam rear mold and inclined beam rear molds on both sides, the two ends of the first fixed beam rear mold are close to the inclined beam rear mold and are respectively provided with a first positioning portion rear mold, the two ends of the second fixed beam rear mold are close to the inclined beam rear mold and are respectively provided with a second positioning portion rear mold.

[0012] As a further improvement of the present invention: the counter-pressure plate is provided with a front riser, a front runner and a front pouring cup, and the positive pressure plate is provided with a rear riser, a rear runner and a rear pouring cup.

[0013] The utility model also provides a brake bracket blank, which is manufactured using the above-mentioned brake bracket casting mold.

[0014] The utility model also provides a brake bracket, which is manufactured using the above-mentioned brake bracket casting mold.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model forms a first inclined surface by surrounding the first positioning part front mold, the second positioning part front mold and the false cavity front mold on the reverse pressure plate, and forms a second inclined surface by surrounding the first positioning part front mold, the second positioning part rear mold and the false cavity rear mold on the positive pressure plate. The first inclined surface and the second inclined surface are used to realize oblique groove demolding, and no new process is needed for sand core production, which reduces the sand core assembly process, reduces production costs, improves production efficiency, and improves the quality of automobile brake bracket blanks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a back pressure plate of a brake bracket casting mold of the utility model.

[0018] Figure 2 This is a front view of a back pressure plate of a brake bracket casting mold of the utility model.

[0019] Figure 3 This is a structural schematic diagram of a positive pressure plate of a brake bracket casting mold of the utility model.

[0020] Figure 4 This is an axial view of a positive pressure plate of a brake bracket casting mold of the utility model.

[0021] Figure 5 This is a schematic diagram of the assembly of a brake bracket casting mold of the utility model.

[0022] Figure 6 This is a schematic diagram of the general assembly of a brake bracket casting mold of the utility model.

[0023] Reference numerals:

[0024] 10. Back pressure plate, 101. First positioning part front mold, 102. Second positioning part front mold, 103. False cavity front mold, 104. First inclined surface, 105. First fixed beam front mold, 106. Second fixed beam front mold, 107. Inclined beam front mold, 108. Front riser, 109. Front runner, 110. Front gate cup,

[0025] 20. Positive pressure plate, 201. First positioning part rear mold, 202. Second positioning part rear mold, 203. False cavity rear mold, 204. Second inclined surface, 205. First fixed beam rear mold, 206. Second fixed beam rear mold, 207. Inclined beam rear mold, 208. Rear riser, 209. Front runner, 210. Rear gate cup. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will provide a clear and complete description of the technical solutions of the present invention in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0027] In order to solve the technical problems in the prior art, the present invention is further described in conjunction with the accompanying drawings and embodiments:

[0028] like Figures 1 to 6 As shown, an embodiment of the utility model discloses a brake bracket casting mold, comprising a positive pressure plate 20 and a back pressure plate 10 that move relatively, and half of a brake bracket mold core is respectively provided on the back pressure plate 10 and the positive pressure plate 20, and the deep cavity structure formed on the brake bracket mold core is improved, and the deep cavity straight groove molding on the positive pressure plate 20 and the back pressure plate 10 is changed into deep cavity oblique groove molding, which reduces the deep cavity molding depth and facilitates molding, and effectively prevents the narrow and slender deep cavity structure from being unable to be molded, resulting in the breakage of the molding sand during molding. After the improvement, the mold can be directly formed to realize the production of finished products, without the need to add a new process for sand core production, reducing the sand core assembly process, reducing production costs, improving production efficiency, and improving the quality of automobile brake bracket blanks.

[0029] The deep cavity oblique groove demolding method designed in this embodiment is to improve the brake bracket mold core on the positive pressure plate 20 and the counter pressure plate 10 to form the model structure of the brake disc groove.

[0030] Specifically, the back pressure plate 10 is provided with a first positioning part front mold 101, a second positioning part front mold 102 and a false cavity front mold 103 for forming a brake disc groove. The first positioning part front mold 101 and the second positioning part front mold 102 are arranged opposite to each other, and the false cavity front mold 103 is respectively connected to the first positioning part front mold 101 and the second positioning part front mold 102. The first positioning part front mold 101, the second positioning part front mold 102 and the false cavity front mold 103 are surrounded to form a first inclined groove, and the inner side of the first positioning part front mold 101 is connected to the inner side of the second positioning part front mold 102 to form a first inclined surface.

[0031] The positive pressure plate 20 is provided with a first positioning part rear mold 201, a second positioning part rear mold 202 and a false cavity rear mold 203 for forming a brake disc groove. The false cavity rear mold 203 is respectively connected to the first positioning part rear mold 201 and the second positioning part rear mold 202. The first positioning part rear mold 201, the second positioning part rear mold 202 and the false cavity rear mold 203 are surrounded to form a second inclined groove. The inner side of the first positioning part front mold 201 is connected to the inner side of the second positioning part rear mold 202 to form a second inclined surface. The inclination direction of the first inclined surface 104 is consistent with that of the second inclined surface 204.

[0032] The first inclined surface 104 is relatively located on the outside of the false cavity front mold 103, and the second inclined surface 204 is relatively located on the inside of the false cavity rear mold 203. During the brake bracket casting process, the brake disc front bevel formed by the first positioning part front mold 101, the second positioning part front mold 102 and the false cavity front mold 103 is filled with molding sand, and the brake disc rear bevel formed by the first positioning part rear mold 201, the second positioning part rear mold 202 and the false cavity rear mold 203 is filled with molding sand. The rear edge of the previous brake bracket casting mold is connected to the front edge of the current brake bracket casting mold. The molding sand blocks filled with the brake disc front bevel and the brake disc rear bevel are spliced ​​together to form a complete brake disc groove sand block. After casting is completed, the brake disc groove sand block forms a brake disc groove.

[0033] The brake disc groove blank of the brake bracket is drawn at right angles. To prevent breakage in the molding sand during demolding, a core is required for production. In this embodiment, the blank forming the brake disc groove on the back pressure plate 10 is designed with a first inclined surface 104, and the blank forming the brake disc groove on the positive pressure plate 20 is designed with a second inclined surface 204. Thus, the first and second inclined surfaces 104 and 204 transform the brake disc groove blank into an inclined groove for drawing, reducing the draft depth and facilitating demolding. Typically, the first and second inclined surfaces 104 and 204 are combined at right angles. This achieves the production of brake bracket castings with cores, reduces labor intensity, reduces manufacturing costs, and improves the quality of automobile brake bracket blanks.

[0034] In some embodiments, the distances between the outer sides of the first positioning portion front mold 101 and the outer sides of the second positioning portion front mold 102 and the first inclined surface 104 gradually decrease as the positive pressure plate 20 points toward the counter-pressure plate 10. The first positioning portion front mold 101, the second positioning portion front mold 102, and the false cavity front mold 103 enclose and form a portion of the brake disc groove. The design of the first inclined surface 104 enables oblique groove demolding, which gradually reduces the draft depth of the brake disc groove, facilitating demolding.

[0035] Correspondingly, along the direction from the back pressure plate 10 to the positive pressure plate 20, the distances between the outer sides of the first positioning portion rear mold 201 and the outer sides of the second positioning portion rear mold 202 and the second inclined surface 204 gradually decrease. Specifically, the outer side of the first positioning portion rear mold 201 is closer to the false cavity rear mold than the inner side of the first positioning portion rear mold 201, and the outer side of the second positioning portion rear mold 202 is closer to the false cavity rear mold than the outer side of the second positioning portion rear mold 202. The first positioning portion rear mold 201, the second positioning portion rear mold 202, and the false cavity rear mold 203 form another part of the brake disc groove. The design of the second inclined surface 204 enables oblique groove demolding, reduces the demolding depth, facilitates demolding, and prevents breakage of the molding sand during demolding.

[0036] It should be noted that the automobile brake bracket is provided with a first fixed beam, a second fixed beam, and oblique beams on both sides. First positioning parts are respectively provided at positions close to the oblique beams on both sides of the first fixed beam, and the first positioning parts extend toward the second fixed beam. Correspondingly, second positioning parts are respectively provided at positions close to the oblique beams on both sides of the second fixed beam, and the second positioning parts are arranged opposite to the first positioning parts. The first positioning parts and the second positioning parts on both sides form a brake disc groove for accommodating the brake disc.

[0037] The counter-pressure plate 10 is provided with a first fixed beam front mold 105, a second fixed beam front mold 106 and oblique beam front molds 107 on both sides. The first positioning portion front mold 101 is respectively provided at both ends of the first fixed beam front mold 105 on the counter-pressure plate 10 near the oblique beam front mold 107, and the second positioning portion front mold 102 is respectively provided at both ends of the second fixed beam front mold 106 near the oblique beam front mold 107. Correspondingly, the positive pressure plate 20 is provided with a first fixed beam rear mold 205, a second fixed beam rear mold 206 and oblique beam rear molds 207 on both sides. The first positioning portion rear mold 201 is respectively provided at both ends of the first fixed beam rear mold 205 on the positive pressure plate 20 near the oblique beam rear mold 207, and the second positioning portion rear mold 202 is respectively provided at both ends of the second fixed beam rear mold 206 near the oblique beam rear mold 207.

[0038] The false cavity front mold 103 is located between the middle of the first fixed beam front mold 105 and the middle of the second fixed beam front mold 106, and the false cavity rear mold 203 is located between the middle of the first fixed beam rear mold 205 and the middle of the second fixed beam rear mold 206. In this way, the left and right sides of the false cavity front mold 103 are respectively connected to the first positioning part front mold 101 and the second positioning part front mold 102 on both sides. The same is true for the positive pressure plate 20, so I will not elaborate on it.

[0039] During the production of the brake bracket blank, the positive pressure plate 20 and the counter pressure plate 10 move relative to each other, compressing the molding sand to form a brake bracket mold. A cavity is formed on both sides of the brake bracket mold, and the leading edge of the next brake bracket mold connects with the trailing edge of the previous brake bracket mold, forming a brake bracket cavity for filling with molten metal. Specifically, the first positioning portion front mold 101 and the first positioning portion rear mold 201 are spliced ​​together to form a blank for a portion of the brake disc groove. After casting is completed, a portion of the blank forms a portion of the brake disc groove of the brake bracket. Similarly, the second positioning portion front mold 102 and the second positioning portion rear mold 202 are spliced ​​together to form a blank for another portion of the brake disc groove. After casting is completed, the other portion of the blank will form another portion of the brake disc groove on the brake bracket.

[0040] In some embodiments, the draft angle of the first bevel 104 is in the range of 30° to 60°, and the draft angle of the second bevel 204 is in the range of 30° to 60°. In this embodiment, the draft angle of the first bevel 104 is the same as the draft angle of the second bevel 204, and the first bevel 104 and the second bevel 204 are parallel to each other.

[0041] Generally speaking, the angle between the first inclined surface 104 and the relative movement direction of the positive and negative pressure plates 10 is the draft angle of the first inclined surface 104, and the angle between the second inclined surface 204 and the relative movement direction of the positive and negative pressure plates 10 is the draft angle of the second inclined surface 204. The first inclined surfaces 104 on both sides of the back pressure plate 10 are inclined and approached from the outside to the inside, forming an "eight" shape from the back pressure plate 10 to the positive pressure plate 20. Similarly, the second inclined surfaces 204 on both sides of the positive pressure plate 20 are also inclined and approached from the outside to the inside.

[0042] For ease of understanding, the front bevel of the brake disc, formed by the first positioning portion front mold 101, the second positioning portion front mold 102, and the false cavity front mold 103, is a triangular prism with a bottom surface that resembles a right triangle. The corresponding brake disc bevel, formed by the first positioning portion rear mold 201, the second positioning portion rear mold 202, and the false cavity rear mold 203, is also a triangular prism with a bottom surface that resembles a right triangle. The front bevel and the rear bevel, connected to form a cube. It is important to note that the front bevel is open on the outside, the first bevel 104 is formed on the outer wall of the false cavity front mold 103, and the rear bevel is open on the inside, communicating with the false cavity rear mold 203.

[0043] In a specific example, the draft angle of the first inclined surface 104 is 45°, and the draft angle of the second inclined surface 204 is 45°.

[0044] In a specific example, the draft angle of the first inclined surface 104 is 30°, and the draft angle of the second inclined surface 204 is 30°.

[0045] In another specific example, the draft angle of the first inclined surface 104 is 60°, and the draft angle of the second inclined surface 204 is 60°.

[0046] In some embodiments, the counter-pressure plate 10 is provided with a front riser 108, a front runner 109, and a front gate cup 110, and the positive pressure plate 20 is provided with a rear riser 208, a rear runner 209, and a rear gate cup 210. After the rear edge of the preceding brake bracket mold is joined to the rear edge of the succeeding brake bracket mold, the front riser 108 is joined to the rear riser 208, the front runner 109 is joined to the rear runner 209, and the front gate cup 110 is joined to the rear gate cup 210.

[0047] In this embodiment, the positive pressure plate 20 and the counter pressure plate 10 are provided with multiple brake support molds, correspondingly comprising a first fixed beam front mold, a second fixed beam rear mold, a second fixed beam front mold, a first fixed beam rear mold, a slanted beam front mold, a slanted beam rear mold, a first positioning portion front mold, a second positioning portion front mold, a first inclined surface, and a second inclined surface. These structures are described above and will not be further elaborated here. Laterally, adjacent brake support molds are provided with a common riser, connecting the molds on both sides. After casting, the molten metal flows through the common riser into the cavities of adjacent brake support molds. Vertically, a supporting false cavity is provided between adjacent brake support molds.

[0048] The embodiment of the present utility model further provides a brake bracket blank, which is manufactured using the above-mentioned brake bracket casting mold.

[0049] The embodiment of the present utility model further provides a brake bracket, which is manufactured using the above-mentioned brake bracket casting mold.

[0050] The main functions of this utility model are:

[0051] 1. The first positioning part front mold, the second positioning part front mold and the false cavity front mold on the counter pressure plate are surrounded to form a first inclined surface, and the first positioning part front mold, the second positioning part rear mold and the false cavity rear mold on the positive pressure plate are surrounded to form a second inclined surface. The first inclined surface and the second inclined surface are used to realize the inclined groove demolding to reduce the depth and facilitate demolding.

[0052] 2. To solve the problem of easy breakage of molding sand during demoulding of existing narrow, slender and deep cavity structures such as brake disc grooves, the inclined groove demoulding method is adopted to replace the existing right-angle demoulding method. The mold can be directly formed to realize the production of finished products without adding a new process for sand core production, reducing the sand core assembly process, reducing production costs, improving production efficiency, and improving the quality of automobile brake bracket blanks.

[0053] In summary, after reading the document of this utility model, ordinary technicians in this field can make various other corresponding transformation schemes based on the technical scheme and technical concept of this utility model without creative mental work, which all fall within the scope of protection of this utility model.

Claims

1. A brake bracket casting mold, characterized in that: It includes a positive pressure plate and a negative pressure plate that move relatively. The negative pressure plate is provided with a first positioning part front mold and a second positioning part front mold that are relatively set. The inner side of the first positioning part front mold is connected to the inner side of the second positioning part front mold to form a first inclined surface. The positive pressure plate is provided with a first positioning part rear mold and a second positioning part rear mold that are relatively set. The inner side of the first positioning part front mold is connected to the inner side of the second positioning part rear mold to form a second inclined surface. The inclination directions of the first inclined surface and the second inclined surface are consistent.

2. A brake bracket casting mold according to claim 1, characterized in that: Along the direction from the positive pressure plate to the negative pressure plate, the distance between the outer side of the front mold of the first positioning part and the outer side of the front mold of the second positioning part and the first inclined surface gradually decreases; along the direction from the negative pressure plate to the positive pressure plate, the distance between the outer side of the rear mold of the first positioning part and the outer side of the rear mold of the second positioning part and the second inclined surface gradually decreases.

3. The brake bracket casting mold according to claim 2, characterized in that: The draft angle of the first inclined surface ranges from 30° to 60°, the draft angle of the second inclined surface ranges from 30° to 60°, and the draft angle of the first inclined surface is the same as the draft angle of the second inclined surface.

4. The brake bracket casting mold according to claim 2, characterized in that: The draft angle of the first inclined surface is 45°, and the draft angle of the second inclined surface is 45°.

5. The brake bracket casting mold according to claim 2, characterized in that: The draft angle of the first inclined surface is 30°, and the draft angle of the second inclined surface is 30°.

6. A brake bracket casting mold according to any one of claims 1 to 5, characterized in that: The back pressure plate is also provided with a first fixed beam front mold, a second fixed beam front mold and an inclined beam front mold on both sides. The first fixed beam front mold is provided with a first positioning part front mold at both ends close to the inclined beam front mold, and the second fixed beam front mold is provided with a second positioning part front mold at both ends close to the inclined beam front mold.

7. The brake bracket casting mold according to claim 6, characterized in that: The positive pressure plate is also provided with a first fixed beam rear mold, a second fixed beam rear mold and inclined beam rear molds on both sides. The first fixed beam rear mold is provided with a first positioning portion rear mold at both ends close to the inclined beam rear mold, and the second fixed beam rear mold is provided with a second positioning portion rear mold at both ends close to the inclined beam rear mold.

8. The brake bracket casting mold according to claim 7, characterized in that: The back pressure plate and the positive pressure plate are provided with a plurality of brake bracket mold core structures.

9. A brake bracket blank, characterized in that: The brake bracket is manufactured using a casting mold according to any one of claims 1 to 7.

10. A brake bracket, characterized in that: The brake bracket is manufactured using a casting mold according to any one of claims 1 to 7.

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