Casting mold structure for integrally casting fixed calipers

Abstract

The utility model discloses a casting mold structure for integrally casting fixed calipers, which comprises a lower mold, an upper mold, an upper mold and a lower mold, wherein the upper surface of the lower mold is provided with a first groove surface; the upper die is of a plate-shaped structure, a second groove face is arranged on the lower surface of the upper die, an upper die hole penetrating through the plate face is formed in the upper die, and an upper die exhaust groove is formed in the inner wall of the upper die hole; the upper die insert is arranged in the upper die hole, a third groove face is arranged at the end, corresponding to the upper die, of the upper die insert, and the first groove face, the second groove face and the third groove face are used in cooperation and used for casting a fixed caliper blank; the elastic assembly is arranged between the upper die insert and the upper die and used for preventing the upper die insert from making contact with the upper surface of the upper die; and the limiting assembly is arranged on the upper surface of the upper die and used for limiting the upper die insert on the upper surface of the upper die. According to the casting mold structure for integrally casting the fixed calipers, it can be guaranteed that the fixed calipers blank smoothly falls off from the upper mold, and the problem of unsmooth exhaust is thoroughly solved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting mold equipment, and more specifically to an integrally cast fixed caliper casting mold structure. Background Art

[0002] The brake caliper on a car has the function of slowing down the moving wheels and keeping them stopped. It is an indispensable safety part in car driving and is generally used in disc brake systems. The brake caliper is also commonly known as a caliper.

[0003] The integrally cast fixed aluminum caliper has high caliper body strength, large braking force, fast braking response speed and light caliper body weight. At the same time, the price of aluminum alloy is relatively low. It is an ideal choice for cars pursuing high performance, lightweight and economy, and has great development prospects.

[0004] During the casting process of aluminum calipers, the following problems are prone to occur: 1. After the aluminum liquid in the caliper mold solidifies, when the upper mold moves upward, the caliper blank may remain in the lower mold cavity. This is a normal mold opening action, but the caliper blank may also remain in the upper mold cavity and move upward with the upper mold. At this time, the casting action will be abnormal and normal continuous casting will not be possible; 2. In order to achieve good filling of the aluminum liquid, the aluminum liquid needs to be cast at a faster speed, and the upper mold needs to be sprayed with thermal insulation coating frequently to ensure the flow and filling capacity of the aluminum liquid. However, while casting quickly, the upper mold needs to have a good exhaust effect. However, after the upper mold is frequently sprayed with thermal insulation coating, the coating will also fill the exhaust gap, resulting in blockage of the exhaust gap and insufficient exhaust effect of the upper mold. Therefore, it is easy for the mold to have poor exhaust and cause air entrainment defects in the casting, especially in the last casting and filling part of the aluminum caliper.

[0005] The existing solutions are: 1. Add an upper die ejection mechanism to the upper die of the caliper casting mold, and set multiple ejector rods on the upper die ejection mechanism. When the caliper casting mold is opened, the upper die moves upward while the ejector rods on the upper die ejection mechanism move downward to eject the casting, so that the caliper blank does not move with the upper die. 2. Increase the number of exhaust pins on the caliper upper die and increase the frequency of cleaning the exhaust pins to reduce the phenomenon of poor exhaust during casting.

[0006] The disadvantages of the existing solutions are: 1. Adding an upper mold ejection mechanism to the caliper casting mold also requires adding a downward ejection mechanism and action to the casting machine, which will cause the mold structure and the casting machine structure to become complicated, making the casting process more complicated and increasing production costs. More importantly, the ejector rod on the upper mold ejection mechanism presses on the casting, which will inevitably leave a top mark on the casting, thereby affecting the appearance quality of the caliper blank. 2. Increasing the number of exhaust pins on the caliper upper mold and increasing the frequency of cleaning the exhaust pins can only reduce the phenomenon of poor exhaust during casting, but cannot fundamentally solve the problem and cannot completely eliminate the problem of poor exhaust.

[0007] In summary, how to ensure that the caliper blank falls off the upper die smoothly and completely eliminate the problem of poor exhaust is an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0008] In view of this, the purpose of the utility model is to provide an integrally cast fixed caliper casting mold structure, which can ensure that the fixed caliper blank falls off from the upper mold smoothly and completely eliminate the problem of poor exhaust.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] An integrally cast fixed caliper casting mold structure, comprising:

[0011] A lower mold, the upper surface of which is provided with a first groove surface;

[0012] The upper mold is a plate-shaped structure, the lower surface of the upper mold is provided with a second groove surface, the upper mold is arranged above the lower mold, and the upper mold is provided with an upper mold hole penetrating the plate surface, and the inner wall of the upper mold hole is provided with an upper mold exhaust groove;

[0013] An upper die insert is arranged in the upper die hole, and a third groove surface is arranged at one end of the upper die insert corresponding to the upper die, and the first groove surface, the second groove surface and the third groove surface are used in conjunction with each other and are used for casting a fixed caliper blank;

[0014] An elastic component is provided between the upper mold insert and the upper mold, and the elastic component is used to prevent the upper mold insert from contacting the upper surface of the upper mold;

[0015] A limiting component is arranged on the upper surface of the upper die, and the limiting component is used to limit the upper die insert on the upper surface of the upper die.

[0016] Preferably, the shape of the upper mold insert is arranged to correspond to the shape of the upper mold hole, a plurality of upper mold exhaust grooves are evenly distributed on the inner wall of the upper mold hole, and an upper mold exhaust chamfer is provided at the connection between the upper mold exhaust groove and the upper surface of the upper mold.

[0017] Preferably, the elastic component includes a plurality of return springs, and the upper surface of the upper die is provided with a plurality of spring mounting holes, the spring mounting holes are evenly distributed on the periphery of the upper die hole and are symmetrically arranged with respect to the length extension direction of the upper die hole.

[0018] Preferably, the limiting assembly includes an upper mold insert pressure plate and an upper mold insert fixing screw, the upper mold insert pressure plate is arranged along the length extension direction of the upper mold hole, and the upper surface of the upper mold is provided with a threaded hole adapted to the upper mold insert fixing screw.

[0019] Preferably, an X-shaped upper mold connecting block is provided on the upper mold, and the upper mold connecting block is arranged on the upper surface of the upper mold through a column. The upper surface of the upper mold is provided with a plurality of column mounting holes adapted to the columns, and an upper mold connecting block fixing hole is provided in the middle part of the upper mold connecting block, and the upper mold connecting block fixing hole is used to connect the upper mold cylinder of the casting machine.

[0020] Preferably, a lower die connection block is connected to the lower end surface of the lower die, and the lower die connection block is used to achieve the positioning of the lower die.

[0021] Preferably, a lower die ejection mechanism is provided on the lower end surface of the lower die, and the lower die ejection mechanism is used to eject the fixed aluminum caliper blank from the lower die.

[0022] Preferably, the lower mold and the upper mold are both rectangular components, the four corners of the upper surface of the lower mold are provided with grooves, the four corners of the lower surface of the upper mold are provided with corresponding protrusions, the side of the upper surface of the lower mold is provided with an arc groove, and the side of the lower surface of the upper mold is provided with corresponding arc protrusions.

[0023] The utility model provides an integrally cast fixed caliper casting mold structure, which includes an upper mold and a lower mold, the upper mold is arranged above the lower mold, and an upper mold hole penetrating the plate surface is arranged on the upper mold, an upper mold insert is arranged in the upper mold hole, a third groove surface is arranged at one end of the upper mold insert corresponding to the upper mold, a first groove surface is arranged on the upper surface of the lower mold, and a second groove surface is arranged on the lower surface of the upper mold, the first groove surface, the second groove surface and the third groove surface are used in conjunction with each other and are used for casting a fixed caliper blank, an elastic component is arranged between the upper mold insert and the upper surface of the upper mold, the elastic component is used to support the upper mold insert and prevent the upper mold insert from directly contacting the upper surface of the upper mold, and a limiting component is also arranged above the upper mold insert, and the limiting component can prevent the upper mold insert from detaching from the upper mold from above.

[0024] When in use, the upper mold and the lower mold are installed correspondingly, and materials are cast between the first groove surface, the second groove surface and the third groove surface to form a fixed caliper blank. During the casting process, the gas in the upper mold cavity is fully discharged through the upper mold exhaust groove, thereby completely solving the problem of exhaust groove blockage during caliper casting. After the casting of the fixed caliper blank is completed, the upper mold is moved upward. At the beginning of the movement, because there is a certain distance between the upper mold insert in the up and down direction, the upper mold insert is in the fixed caliper. Under the clamping force of the caliper blank, it is still in a motionless state. When the upper die moves upward to contact the upper die insert, the upper die insert will move upward driven by the upper die. At this time, the caliper and the upper die have been disengaged and there is no clamping force. Therefore, when the upper die opens upward, it is divided into two stages. First, the fixed caliper blank is separated from the upper die, and then the fixed caliper blank is separated from the upper die insert. The clamping cavity will remain in the lower model cavity. After the upper die moves upward into place, the fixed caliper blank will be removed from the lower die. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of the integrally cast fixed caliper casting mold structure provided by the utility model;

[0027] Figure 2 A schematic diagram of the structure of the upper die hole provided by the utility model;

[0028] Figure 3 It is a structural schematic diagram of the integrally cast fixed caliper casting mold structure provided by the utility model when the upper mold connecting block is not installed;

[0029] Figure 4 This is a structural schematic diagram of a fixed caliper blank provided by the utility model.

[0030] Figures 1 to 4 , the reference numerals include:

[0031] 1 is the lower die, 2 is the upper die, 3 is the upper die hole, 4 is the upper die insert, 5 is the upper die exhaust groove, 6 is the upper die exhaust chamfer, 7 is the return spring, 8 is the spring mounting hole, 9 is the upper die insert pressure plate, 10 is the upper die insert fixing screw, 11 is the upper die connecting block, 12 is the upper die connecting block fixing hole, 13 is the lower die connecting block, 14 is the lower die ejection mechanism, 15 is the fixed caliper blank, 16 is the upper die parting line, and 17 is the caliper mounting foot. DETAILED DESCRIPTION

[0032] 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.

[0033] The core of the utility model is to provide an integrally cast fixed caliper casting mold structure, which can ensure that the fixed caliper blank falls off from the upper mold smoothly and completely eliminate the problem of poor exhaust.

[0034] The present application provides an integrally cast fixed caliper casting mold structure, comprising: a lower mold 1, an upper mold 2, an upper mold insert 4, an elastic component and a limit component;

[0035] Wherein, the upper surface of the lower mold 1 is provided with a first groove surface;

[0036] The upper mold 2 is a plate-shaped structure, and a second groove surface is provided on the lower surface of the upper mold 2. The upper mold 2 is arranged above the lower mold 1, and an upper mold hole 3 penetrating the plate surface is provided on the upper mold 2, and an upper mold exhaust groove 5 is provided on the inner wall of the upper mold hole 3;

[0037] The upper die insert 4 is arranged in the upper die hole 3, and a third groove surface is arranged at one end of the upper die insert 4 corresponding to the upper die 2, and the first groove surface, the second groove surface and the third groove surface are used in conjunction with each other and are used to cast the fixed caliper blank 15;

[0038] The elastic component is arranged between the upper mold insert 4 and the upper mold 2, and the elastic component is used to prevent the upper mold insert 4 from contacting the upper surface of the upper mold 2;

[0039] The limiting assembly is arranged on the upper surface of the upper die 2 , and the limiting assembly is used to limit the upper die insert 4 on the upper surface of the upper die 2 .

[0040] Specifically, the lower mold 1, the upper mold 2 and the upper mold insert 4 are used in conjunction with each other. When the upper mold 2 is installed on the lower mold 1, space is reserved between the first groove surface, the second groove surface and the third groove surface. The space is used to cast the fixed caliper blank 15 and generally aluminum liquid is used for casting. For the fixed caliper blank 15: the caliper mounting foot 17 on the fixed caliper blank 15 is placed upward, so that this part is cast by the upper mold casting of the caliper. Starting from the highest point of the caliper mounting foot 17, an upper mold parting line 16 is set on the fixed caliper blank 15. The upper mold parting line 16 surrounds a circle and is always at the highest position of the fixed caliper blank 15. When the aluminum liquid is filled from bottom to top, the position of the upper mold parting line 16 can be filled last. The upper mold parting line 16 is also the final exhaust position during casting. The upper mold parting line 16 is used to set the parting surface of the mold. The specific structure of the fixed caliper blank 15 can refer to the attached Figure 4 .

[0041] When the fixed caliper blank 15 is cast, the gas in the upper mold cavity can be discharged from the upper mold exhaust groove 5, thereby completely solving the problem of exhaust groove blockage during caliper casting. After the fixed caliper blank 15 is cast, the upper mold 2 is moved upward. At the beginning, because the upper mold insert 4 is at a certain distance in the vertical direction, the upper mold insert 4 is still in a non-moving state under the clamping force of the fixed caliper blank 15. When the upper mold 2 moves upward to contact with the upper mold insert 4, the upper mold insert 4 It will move upward driven by the upper mold 2. At this time, the fixed caliper blank 15 has been disengaged from the upper mold 2 and there is no clamping force. Therefore, when the upper mold 2 is opened upward, it is divided into two stages. First, the fixed caliper blank 15 is disengaged from the upper mold, and then the fixed caliper blank 15 is disengaged from the upper mold insert 4, ensuring that the caliper blank falls off smoothly from the upper mold 2, and the card cavity will remain in the lower model cavity. After the upper mold 2 moves upward into place, the fixed caliper blank 15 will be removed from the lower mold 1.

[0042] Based on the above embodiment, the shape of the upper mold insert 4 is set to correspond to the shape of the upper mold hole 3, and a plurality of upper mold exhaust grooves 5 are evenly distributed on the inner wall of the upper mold hole 3. An upper mold exhaust chamfer 6 is provided at the connection between the upper mold exhaust groove 5 and the upper surface of the upper mold 2.

[0043] Specifically, according to the size of the upper mold parting line 16 on the fixed caliper blank 15, an upper mold hole 3 is set on the upper mold 2, and a plurality of upper mold exhaust grooves 5 are set on the inner wall of the upper mold hole 3. The recommended size of the upper mold exhaust groove 5 is arranged at intervals of 1 width and 0.5 depth. At the same time, an upper mold exhaust chamfer 6 is set at the connection between the upper mold exhaust groove 5 and the upper surface of the upper mold 2, so that the gas in the upper model cavity passes through the upper mold exhaust groove 5 and the upper mold exhaust chamfer 6 successively. The recommended size of the chamfer is 2×45°, so as to ensure that the gas can be fully discharged from the mold.

[0044] In some embodiments, the elastic component includes multiple return springs 7, and the upper surface of the upper mold 2 is provided with multiple spring mounting holes 8, which are evenly distributed on the periphery of the upper mold hole 3 and symmetrically arranged about the length extension direction of the upper mold hole 3.

[0045] Specifically, a plurality of return springs 7 are placed on the upper end surface of the upper die 2. The return springs 7 are high temperature resistant springs, and it is recommended that there are 6 of them and they are evenly arranged around the upper die hole 3. The upper die insert 4 is placed in the upper die hole 3. After the upper die insert 4 contacts the return spring 7, the upper die insert 4 is temporarily not fully matched with the upper die 2. The matching means that the cavity of the upper die 2 is exactly flush with the cavity of the upper die insert 4. At this time, the upper die insert 4 can still move downward for a distance, but the presence of the return spring 7 prevents the upper die insert 4 from being fully matched with the upper die 2.

[0046] Based on the above embodiment, the limiting assembly includes an upper mold insert pressure plate 9 and an upper mold insert fixing screw 10. The upper mold insert pressure plate 9 is arranged along the length extension direction of the upper mold hole 3, and the upper surface of the upper mold 2 is provided with a threaded hole adapted to the upper mold insert fixing screw 10.

[0047] Specifically, the upper mold insert pressing plate 9 is placed above the upper mold insert 4, and the upper mold insert pressing plate 9 is fixed on the upper mold 2 by multiple upper mold insert fixing screws 10. The upper mold insert pressing plate 9 presses the upper mold insert 4 downward. The thickness of the upper mold insert pressing plate 9 in the vertical direction is designed to just make the upper mold insert 4 and the upper mold 2 fully fit in place. At this time, the upper mold insert 4 and the upper mold 2 are still a distance apart in the up and down directions and are not in contact. Since the return spring 7 has been compressed by the upper mold insert pressing plate 9, the elastic force will be slightly larger than the weight of the upper mold insert 4 and is only used to prevent the upper mold insert 4 from moving downward and to maintain the upper mold insert 4 and the upper mold 2 fully fit in place.

[0048] In some embodiments, an X-shaped upper mold connecting block 11 is provided on the upper mold 2, and the upper mold connecting block 11 is arranged on the upper surface of the upper mold 2 through a column. The upper surface of the upper mold 2 is provided with a plurality of column mounting holes adapted to the columns, and an upper mold connecting block fixing hole 12 is provided in the middle part of the upper mold connecting block 11, and the upper mold connecting block fixing hole 12 is used to connect the upper mold cylinder of the casting machine.

[0049] Specifically, the upper mold 2 is connected to the upper mold connecting block 11, and the upper mold connecting block 11 is connected to the upper mold cylinder of the casting machine through the upper mold connecting block fixing hole 12. The upper mold cylinder of the casting machine is used to pull the upper mold 2 up and down to realize the opening and closing of the mold.

[0050] In some embodiments, a lower die connection block 13 is connected to the lower end surface of the lower die 1 , and the lower die connection block 13 is used to achieve positioning of the lower die 1 .

[0051] Specifically, the lower mold 1 is fixed on the casting machine platform through the lower mold connecting block 13 to achieve the positioning of the lower mold 1, so as to facilitate the casting machine to mass produce the fixed caliper blanks 15.

[0052] On the basis of the above-mentioned embodiment, a lower die ejection mechanism 14 is provided on the lower end surface of the lower die 1 , and the lower die ejection mechanism 14 is used to eject the fixed caliper blank 15 from the lower die 1 .

[0053] Specifically, after the fixed caliper blank 15 is separated from the upper mold 2 and the upper mold insert 4, it remains on the upper surface of the lower mold 1. Through the upward movement of the lower mold ejection mechanism 14, the fixed caliper blank 15 can be ejected from the cavity of the lower mold 1. After the fixed caliper blank 15 is removed, a casting cycle is completed.

[0054] Based on the above embodiment, the lower mold 1 and the upper mold 2 are both rectangular components, the four corners of the upper surface of the lower mold 1 are provided with grooves, the four corners of the lower surface of the upper mold 2 are provided with corresponding protrusions, the side of the upper surface of the lower mold 1 is provided with an arc groove, and the side of the lower surface of the upper mold 2 is provided with corresponding arc protrusions.

[0055] Specifically, the four corners of the upper mold 2 are provided with protrusions, and the side is provided with arc-shaped protrusions, the four corners of the lower mold 1 are provided with grooves, and the side is provided with arc-shaped grooves. When the upper mold 2 and the lower mold 1 are precisely matched, the arc-shaped protrusions are embedded in the arc-shaped grooves, and the protrusions are embedded in the grooves, thereby ensuring that the first groove surface, the second groove surface and the third groove surface are adapted to each other, ensuring the production quality of the fixed caliper blank 15. If the arc-shaped protrusion fails to be embedded in the arc groove or the protrusion fails to be embedded in the groove, it can be observed intuitively for easy adjustment.

[0056] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0057] The above is a detailed introduction to the integrally cast fixed caliper casting mold structure provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiment is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An integrally cast fixed caliper casting mold structure, characterized in that: include: A lower mold (1) having an upper surface provided with a first groove surface; The upper mold (2) is a plate-shaped structure, the lower surface of the upper mold (2) is provided with a second groove surface, the upper mold (2) is arranged above the lower mold (1), and the upper mold (2) is provided with an upper mold hole (3) penetrating the plate surface, and the inner wall of the upper mold hole (3) is provided with an upper mold exhaust groove (5); An upper die insert (4) is arranged in the upper die hole (3); a third groove surface is provided at one end of the upper die insert (4) corresponding to the upper die (2); the first groove surface, the second groove surface and the third groove surface are used in conjunction with each other and are used to cast a fixed caliper blank (15); An elastic component is arranged between the upper mold insert (4) and the upper mold (2), and the elastic component is used to prevent the upper mold insert (4) from contacting the upper surface of the upper mold (2); A limiting component is arranged on the upper surface of the upper die (2), and the limiting component is used to limit the position of the upper die insert (4) on the upper surface of the upper die (2).

2. The integrally cast fixed caliper casting mold structure according to claim 1, characterized in that: The shape of the upper die insert (4) is arranged to correspond to the shape of the upper die hole (3); a plurality of upper die exhaust grooves (5) are evenly distributed on the inner wall of the upper die hole (3); and an upper die exhaust chamfer (6) is provided at the connection between the upper die exhaust groove (5) and the upper surface of the upper die (2).

3. The integrally cast fixed caliper casting mold structure according to claim 1, characterized in that: The elastic component comprises a plurality of return springs (7), and the upper surface of the upper die (2) is provided with a plurality of spring mounting holes (8), wherein the spring mounting holes (8) are evenly distributed on the periphery of the upper die hole (3) and are symmetrically arranged with respect to the length extension direction of the upper die hole (3).

4. The integrally cast fixed caliper casting mold structure according to claim 3, characterized in that: The limiting assembly comprises an upper mold insert pressing plate (9) and an upper mold insert fixing screw (10); the upper mold insert pressing plate (9) is arranged along the length extension direction of the upper mold hole (3), and the upper surface of the upper mold (2) is provided with a threaded hole adapted to the upper mold insert fixing screw (10).

5. The integrally cast fixed caliper casting mold structure according to claim 1, characterized in that: The upper mold (2) is provided with an X-shaped upper mold connecting block (11), and the upper mold connecting block (11) is arranged on the upper surface of the upper mold (2) through a column, and the upper surface of the upper mold (2) is provided with a plurality of column mounting holes adapted to the columns, and the middle portion of the upper mold connecting block (11) is provided with an upper mold connecting block fixing hole (12), and the upper mold connecting block fixing hole (12) is used to connect the upper mold cylinder of the casting machine.

6. The integrally cast fixed caliper casting mold structure according to claim 1, characterized in that: The lower end surface of the lower die (1) is connected to a lower die connection block (13), and the lower die connection block (13) is used to achieve the positioning of the lower die (1).

7. The integrally cast fixed caliper casting mold structure according to any one of claims 1 to 6, characterized in that: The lower end surface of the lower die (1) is provided with a lower die ejection mechanism (14), and the lower die ejection mechanism (14) is used to eject the fixed caliper blank (15) from the lower die (1).

8. The integrally cast fixed caliper casting mold structure according to claim 7, characterized in that: The lower mold (1) and the upper mold (2) are both rectangular components, the four corners of the upper surface of the lower mold (1) are provided with grooves, the four corners of the lower surface of the upper mold (2) are provided with corresponding protrusions, the side of the upper surface of the lower mold (1) is provided with an arc groove, and the side of the lower surface of the upper mold (2) is provided with a corresponding arc convex block.

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