Horizontal core shooting mold for double-cylinder calipers

Abstract

The utility model discloses a horizontal core shooting mould for double-cylinder calipers, which comprises an upper mould and a lower mould which are matched with each other, a plurality of double-cylinder calipers forming upper cavities are arranged in the upper mould, a plurality of double-cylinder calipers forming lower cavities are arranged in the lower mould, a plurality of sand shooting holes are arranged on a parting surface of the upper mould and the lower mould, and a plurality of sand shooting holes are arranged on the parting surface of the upper mould and the lower mould. An exhaust passage is also arranged on the parting surface of the upper mold and / or the lower mold; according to the core shooting mold, the double-cylinder caliper forming upper cavities and the double-cylinder caliper forming lower cavities are in one-to-one correspondence and are regularly arranged, sand shooting can be carried out on a plurality of cavities at the same time, sand shooting is full, efficiency is high, a formed double-cylinder caliper sand core is high in integrity, few in burr and even free of burr, and the difficulty of subsequent sand core cleaning is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of casting molds, and particularly to a horizontal core shooting mold for a double-cylinder caliper. Background Art

[0002] The caliper body is one of the main parts of an automotive hydraulic disc brake. After processing, it is used in cooperation with a brake piston, a brake disc, a friction plate, a caliper bracket, etc. The caliper body is used for automotive braking, which is directly related to the safety performance of the vehicle. Therefore, there are very strict requirements for the design and manufacture of the caliper body.

[0003] At present, some automobiles have higher and higher requirements for braking, so it is necessary to instantaneously generate a large braking effect. A double-cylinder caliper body structure is generally adopted, with oil inlet at the middle through-hole connection area, and the thickness of the through-hole is 10 - 15 mm. The cylinder holes and the middle through-holes of the double-cylinder caliper body are all cast by sand cores. Existing double-cylinder sand cores mostly use vertical core boxes, with two parts in one mold. Each time the sand core is taken out manually, the sand core has a high temperature and low efficiency. The double-cylinder connection area is far from the sand shooting port, which often easily causes the sand core to be not compacted at this place, and the sand shooting port is vertically downward, making it difficult to solve problems such as sand leakage and incomplete sand shooting. Summary of the Invention

[0004] The purpose of the utility model is to solve the problems existing in the prior art, and provide a horizontal core shooting mold for a double-cylinder caliper to solve problems such as low continuous production efficiency, non-compacted sand shooting, and sand leakage of the double-cylinder caliper core box.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A horizontal core shooting mold for a double-cylinder caliper, including an upper mold and a lower mold that cooperate with each other. A plurality of upper cavities for forming double-cylinder calipers are arranged in the upper mold in an array, and a plurality of lower cavities for forming double-cylinder calipers are arranged in the lower mold in an array. The upper cavities for forming double-cylinder calipers and the lower cavities for forming double-cylinder calipers are arranged in one-to-one correspondence; a plurality of sand shooting holes are provided at the parting surface of the upper mold and the lower mold, and at least two of the sand shooting holes are connected to a pair of upper and lower cavities for forming double-cylinder calipers; an exhaust passage is further provided on the parting surface of the upper mold and / or the lower mold, and the exhaust passage is distributed in the area between adjacent upper cavities for forming double-cylinder calipers or between adjacent lower cavities for forming double-cylinder calipers. The exhaust passage extends to the edge of the upper mold or the lower mold respectively. An exhaust gap area is provided on at least one side of the parting surface of the upper mold and the lower mold, and the exhaust passage communicates with the exhaust gap area.

[0007] By arranging the upper cavity of the double-cylinder caliper molding and the lower cavity of the double-cylinder caliper molding in one-to-one correspondence and regular arrangement, this core shooting mold can shoot sand into multiple cavities simultaneously, obtaining multiple double-cylinder caliper cores at the same time. The double-cylinder caliper cores are arranged horizontally and symmetrically, which can reduce the space occupation and make the mold structure more reasonable.

[0008] Each pair of upper and lower cavities is respectively provided with a plurality of the sand shooting holes, and the sand shooting holes are arranged in half on the parting surface, which can effectively shoot sand into the cavity. All parts and areas of the double-cylinder caliper molding cavity can be fully sand shot, with a high filling degree. The quality of the core is easy to guarantee, and the integrity of the double-cylinder caliper core after molding is relatively high, with fewer burrs, or even no burrs. Only the sand left by the sand shooting holes on the core needs to be removed, reducing the difficulty of subsequent core cleaning.

[0009] The arrangement of the exhaust channels can timely and effectively discharge the air in the mold cavity and also discharge the gas released during the core molding process, which is beneficial to the complete molding of the core. The exhaust channels are arranged along the periphery of each upper and lower cavity, and the gas can be discharged from both sides, or the gas can be dispersed to the exhaust gap area and then discharged, improving the exhaust speed.

[0010] Furthermore, there are four upper cavities of the double-cylinder caliper molding arranged symmetrically vertically and horizontally, and the double-cylinder molding areas are arranged on the inner side of the upper cavities of the double-cylinder caliper molding.

[0011] Furthermore, the sand shooting holes are arranged horizontally, and each sand shooting hole is respectively arranged corresponding to one of the cylinders in the double-cylinder molding area, so as to ensure that the positions and connection areas of the two cylinder holes are shot solid and full.

[0012] Furthermore, the exhaust channels include exhaust horizontal channels and exhaust vertical channels, and the exhaust horizontal channels and the exhaust vertical channels intersect at the center of the parting surface.

[0013] Furthermore, exhaust gap areas are respectively provided on both sides of the parting surface, and the exhaust gap areas are shallow grooves arranged on the upper mold and / or the lower mold; the upper mold and the lower mold are respectively provided with pin sleeves in the middle areas on both sides, and the exhaust gap areas bifurcate at the areas where the pin sleeves are located.

[0014] Furthermore, the average depth of the exhaust channels is 2 - 3 mm, and the opening width is 7 - 10 mm; the gap of the exhaust gap areas is 2 - 3 mm.

[0015] Furthermore, anti-misalignment chamfers are respectively provided at the two corners on the same side of the upper mold and the lower mold to prevent misassembly.

[0016] Furthermore, sand shooting plates are respectively provided on both sides of the upper mold and the lower mold, and a plurality of sand shooting channels are arranged at intervals on the sand shooting plates, and the sand shooting channels correspond to and are connected to the sand shooting holes.

[0017] Furthermore, the upper mold and the lower mold are respectively provided with a receiving groove on one side away from the parting surface, and a bottom plate and a push rod plate are arranged on the bottom plate, and at least a connecting support rod, a sand core push rod and a return push rod are provided on the push rod plate; the upper mold and the lower mold are also respectively provided with a plurality of horizontally arranged heating pipe channels, and the heating pipe channels are located above the upper cavity of the double-cylinder caliper molding or below the lower cavity of the double-cylinder caliper molding, and are staggered with the connecting support rod, the sand core push rod and the return push rod.

[0018] Compared with the prior art, the beneficial effects of the utility model are: 1. The structure of the horizontal core shooting mold for the double-cylinder caliper is simple and compact, easy to install and use, and can use the whole set of molds to simultaneously produce sand cores of multiple double-cylinder caliper castings of the same size and model, with good sand core molding quality and high production efficiency; 2. The core shooting mold can shoot sand into multiple cavities at the same time, realizing the production of double-cylinder caliper sand cores with one mold and four cores. The sand cores of the double-cylinder caliper are arranged horizontally and symmetrically, which can reduce space occupation and make the mold structure more reasonable; 3. Each pair of upper and lower cavities is respectively provided with a plurality of the sand shooting Hole, and the sand shooting holes are arranged in half on the parting surface, which can effectively shoot sand into the cavity. All parts and areas of the double-cylinder caliper molding cavity can be fully sand shot, with a high degree of fullness, and the sand core of the double-cylinder caliper after molding has high integrity, fewer burrs, or even no burrs. It is only necessary to remove the sand left by the sand shooting holes on the sand core, which reduces the difficulty of subsequent sand core cleaning; 4. The setting of the exhaust duct can timely and effectively discharge the air in the mold cavity, and can also discharge the gas released during the sand core molding process, thereby improving the exhaust speed and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a horizontal core-shooting mold for a double-cylinder caliper of the utility model;

[0020] Figure 2 It is a schematic diagram of the parting surface structure of the upper mold of the utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the upper mold of the utility model;

[0022] Figure 4 It is a schematic diagram of the parting surface structure of the lower mold of the utility model;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the lower mold of the utility model;

[0024] Figure 6Schematic diagram of the transverse exhaust duct of the present utility model;

[0025] Figure 7 Schematic diagram of the longitudinal exhaust duct of the present utility model;

[0026] In the figure: 1. upper die; 101. upper cavity for double-cylinder caliper forming; 2. lower die; 201. lower cavity for double-cylinder caliper forming; 3. sand injection hole; 4. exhaust duct; 401. transverse exhaust duct; 402. longitudinal exhaust duct; 5. exhaust gap area; 6. pin sleeve; 7. anti-misalignment corner; 8. sand injection plate; 9. sand injection channel; 10. bottom plate; 11. ejector plate; 12. connecting support rod; 13. return ejector rod; 14. core ejector rod; 15. heating pipe channel. Detailed implementation manners

[0027] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "left", "right", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] Such as Figures 1 to 7As shown in the figure, a horizontal core shooting mold for a double-cylinder caliper includes a matching upper mold 1 and a lower mold 2. A plurality of upper cavities 101 for forming double-cylinder calipers are arranged in the upper mold 1 in an array, and a plurality of lower cavities 201 for forming double-cylinder calipers are arranged in the lower mold 2 in an array. The upper cavities 101 for forming double-cylinder calipers and the lower cavities 201 for forming double-cylinder calipers are arranged in one-to-one correspondence. The upper cavities 101 for forming double-cylinder calipers and the lower cavities 201 for forming double-cylinder calipers are respectively used to receive sand and form sand cores. The upper mold 1 and the lower mold 2 are provided with a plurality of sand shooting holes 3 at the parting surface. At least two of the sand shooting holes 3 are connected to a pair of upper and lower cavities 101 for forming double-cylinder calipers. An exhaust channel 4 is also provided on the parting surface of the upper mold and / or the lower mold. The exhaust channel 4 is distributed in the area between adjacent upper cavities 101 for forming double-cylinder calipers or between adjacent lower cavities 201 for forming double-cylinder calipers. The exhaust channel 4 extends to the edge of the upper mold 1 or the lower mold 2 respectively. The upper mold 1 and the lower mold 2 are provided with an exhaust gap area 5 on at least one side of the parting surface. The exhaust channel 4 communicates with the exhaust gap area 5.

[0030] The horizontal core shooting mold for a double-cylinder caliper has a simple and compact structure, is easy to install and use, can use the whole set of molds to simultaneously produce sand cores of multiple double-cylinder caliper castings with the same size and model, has good sand core forming quality, and high production efficiency.

[0031] By arranging the upper cavities 101 for forming double-cylinder calipers and the lower cavities 201 for forming double-cylinder calipers in one-to-one correspondence and in a regular array, the core shooting mold can simultaneously perform sand shooting on multiple cavities, and obtain multiple double-cylinder caliper sand cores at the same time. The double-cylinder caliper sand cores are arranged horizontally and symmetrically, which can reduce the space occupation and make the mold structure more reasonable.

[0032] Each pair of upper and lower cavities is respectively provided with a plurality of the sand shooting holes 3, and the sand shooting holes 3 are arranged in half on the parting surface, which can effectively perform sand shooting on the cavities. All parts and areas of the cavities for forming double-cylinder calipers can be fully sand shot, with a high sand filling degree, the quality of the sand core is easy to be guaranteed, and the integrity of the double-cylinder caliper sand core after forming is high, with less burrs, or even no burrs. Only the sand left by the sand shooting holes on the sand core needs to be removed, reducing the difficulty of subsequent sand core cleaning.

[0033] The arrangement of the exhaust channel 4 can timely and effectively discharge the air in the mold cavity, and can also discharge the gas released during the sand core forming process, which is beneficial to the complete forming of the sand core. The exhaust channel 4 is arranged along the periphery of each upper and lower cavity, and can discharge the gas from both sides, or disperse the gas to the exhaust gap area and then discharge it, improving the exhaust speed.

[0034] In this embodiment, both the exhaust passage 4 and the exhaust gap area 5 are arranged at the parting surface of the upper mold 1. When the core is removed by parting, the inclusions in the exhaust passage 4 will naturally fall off under the action of gravity, reducing the steps of frequently cleaning the exhaust passage. After producing a dozen core molds with this structure, occasional blowing and cleaning are sufficient, effectively realizing automatic production without blowing and cleaning inclusions for each mold.

[0035] Further, there are four double-cylinder caliper forming upper cavities 101 arranged symmetrically in the vertical and horizontal directions. The double-cylinder caliper forming upper cavities 101 are arranged with double-cylinder forming areas on the inner side. Such an arrangement can achieve the production of four parts in one mold.

[0036] Further, the sand injection holes 3 are arranged horizontally, and each sand injection hole 3 is respectively arranged corresponding to one of the cylinders in the double-cylinder forming area. That is, in each pair of upper and lower cavities, the two sand injection holes respectively correspond to the positions of the two cylinder holes of the double cylinder, so as to ensure that the positions of the two cylinder holes are filled solidly and fully, and the connection area of the double cylinder can also be filled. Preferably, the sand injection holes are concentrically arranged with the cylinder hole areas of the double cylinder.

[0037] Further, the exhaust passage 4 includes an exhaust horizontal passage 401 and an exhaust vertical passage 402. The exhaust horizontal passage 401 and the exhaust vertical passage 402 meet at the center of the parting surface so that gas can disperse from all directions. Both ends of the exhaust vertical passage 402 communicate with the exhaust gap area 5.

[0038] Further, the exhaust gap areas 5 are respectively arranged on both sides of the parting surface. The exhaust gap areas 5 are shallow grooves arranged on the upper mold 1. The upper mold 1 and the lower mold 2 are respectively provided with pin sleeves 6 in the middle areas on both sides. The exhaust gap areas 5 branch at the areas where the pin sleeves 6 are located.

[0039] The area of the exhaust gap area 5 is relatively large, which can quickly play an exhaust role. The setting of the pin sleeve 6 can connect the positioning pin and play a positioning role during the mold closing process.

[0040] Further, the average depth of the exhaust passage 4 is 2 - 3 mm, and the opening width is 7 - 10 mm. Preferably, the average depth of the exhaust passage is about 2.3 mm. The exhaust passage is semi-circular or trapezoidal, and the average width is about 7 mm. The gap of the exhaust gap area is about 2.4 mm, which is slightly larger than the depth of the exhaust passage.

[0041] In some embodiments, a 0.2 mm gap is provided in the double-cylinder connection area for facilitating later exhaust, a 0.1 mm step exhaust is provided at the parting surface, and exhaust is provided at a position near the cavity within 5 mm.

[0042] Furthermore, the upper mold 1 and the lower mold 2 are respectively provided with anti-error notched corners 7 at the two corners on the same side. Since the upper mold and the lower mold are basically arranged symmetrically, in order to avoid reverse or incorrect installation, the anti-error notched corners are provided at the outer corners, which can play an intuitive anti-error role.

[0043] Furthermore, a sand shooting plate 8 is provided on both sides of the upper mold 1 and the lower mold 2, and a plurality of sand shooting channels 9 are provided on the sand shooting plate 8 at intervals, and the sand shooting channels 9 correspond to and communicate with the sand shooting holes 3. The provision of the sand shooting plate 8 is conducive to achieving synchronous sand shooting.

[0044] Furthermore, the upper mold 1 and the lower mold 2 are respectively provided with a receiving groove on one side away from the parting surface, and a bottom plate 10 and a push rod plate 11 arranged on the bottom plate 10 are provided in the receiving groove, and at least a connecting support rod 12, a sand core push rod 14 and a return push rod 13 are provided on the push rod plate 11; the connecting support rod 12 can connect the bottom plate, the push rod plate and the upper mold, or connect the lower mold, and the return push rod 13 is respectively arranged at the four corners, and the return push rod is arranged in the upper and lower molds, which is conducive to the accurate mold closing or parting of the upper mold and the lower mold, and the sand core push rod 14 is distributed in multiple areas of the upper and lower cavities, and the sand core can be ejected more smoothly after the sand core is formed, which is conducive to demolding.

[0045] The upper mold 1 and the lower mold 2 are respectively provided with a plurality of horizontally arranged heating tube channels 15, and the heating tube channels 15 are located above the upper cavity 101 of the double-cylinder caliper molding or below the lower cavity 201 of the double-cylinder caliper molding, and are staggered with the connecting support rod, the sand core push rod and the return push rod. Heating tubes can be arranged in the heating tube channels 15 to heat the upper and lower molds respectively, which is beneficial to the curing and molding of the sand cores. In this embodiment, six heating tubes are respectively arranged in the upper and lower molds to cover each cavity area.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A horizontal core-shooting mold for a double-cylinder caliper, comprising an upper mold and a lower mold that cooperate with each other, characterized in that: A plurality of double-cylinder caliper forming upper cavities are arranged in the upper die, and a plurality of double-cylinder caliper forming lower cavities are arranged in the lower die, and the double-cylinder caliper forming upper cavities are arranged in one-to-one correspondence with the double-cylinder caliper forming lower cavities; the upper die and the lower die are provided with a plurality of sand shooting holes at the parting surface, and an upper and lower pair of the double-cylinder caliper forming upper cavities and the double-cylinder caliper forming lower cavities are connected with at least two of the sand shooting holes; an exhaust duct is also provided on the parting surface of the upper die and / or the lower die, and the exhaust duct is distributed in the area between adjacent double-cylinder caliper forming upper cavities or between adjacent double-cylinder caliper forming lower cavities, and the exhaust duct extends to the edge of the upper die or the lower die respectively, and the upper die and the lower die are provided with an exhaust gap area on at least one side of the parting surface, and the exhaust duct is connected to the exhaust gap area.

2. The horizontal core shooting mold for a double-cylinder caliper according to claim 1, characterized in that: The twin-cylinder caliper molded upper cavity is four in number and is arranged symmetrically in the vertical and horizontal directions. The twin-cylinder molded upper cavity of the twin-cylinder caliper is provided with a twin-cylinder molding area on the inner side.

3. The horizontal core shooting mold for a double-cylinder caliper according to claim 1, characterized in that: The sand shooting holes are arranged horizontally, and each of the sand shooting holes is arranged corresponding to one of the cylinders in the double-cylinder forming area.

4. The horizontal core shooting mold for a double-cylinder caliper according to claim 1, characterized in that: The exhaust passage comprises an exhaust transverse passage and an exhaust longitudinal passage, and the exhaust transverse passage and the exhaust longitudinal passage meet at the center of the parting surface.

5. The horizontal core shooting mold for a double-cylinder caliper according to claim 1, characterized in that: The venting gap area is provided on both sides of the parting surface, and the venting gap area is a shallow groove arranged on the upper mold and / or the lower mold; the upper mold and the lower mold are respectively arranged with pin sleeves in the middle area on both sides, and the venting gap area is forked at the area where the pin sleeve is located.

6. The horizontal core shooting mold for a double-cylinder caliper according to claim 1, characterized in that: The average depth of the exhaust channel is 2 to 3 mm, and the opening width is 7 to 10 mm; the gap in the exhaust gap area is 2 to 3 mm.

7. The horizontal core shooting mold for a double-cylinder caliper according to claim 1, characterized in that: Anti-error missing corners are also provided at the two corners on the same side of the upper die and the lower die.

8. The horizontal core shooting mold for a double-cylinder caliper according to claim 1, characterized in that: Sand shooting plates are respectively provided on both sides of the upper die and the lower die, and a plurality of sand shooting channels are arranged at intervals on the sand shooting plates, and the sand shooting channels correspond to and are connected with the sand shooting holes.

9. The horizontal core shooting mold for a double-cylinder caliper according to claim 1, characterized in that: The upper mold and the lower mold are respectively provided with a receiving groove on one side away from the parting surface, and a bottom plate and a push rod plate are arranged on the bottom plate. The push rod plate is at least provided with a connecting support rod, a sand core push rod and a return push rod; the upper mold and the lower mold are also respectively provided with a plurality of horizontally arranged heating pipe channels, and the heating pipe channels are located above the upper cavity of the double-cylinder caliper molding or below the lower cavity of the double-cylinder caliper molding, and are staggered with the connecting support rod, the sand core push rod and the return push rod.

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