Local pressurizing forming device for barb structure of center hole of motorcycle calipers
By using a combination of oil cylinder and extrusion pin in the local boosting molding device of the central hole barb structure of the motorcycle caliper, the problems of increased wall thickness and shrinkage in high-pressure casting are solved, and the leakage detection pass rate and product quality of die castings are improved.
Patent Information
- Application Number
- CN202422215327.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-10
AI Technical Summary
During the high-pressure casting process of the central hole barb structure of motorcycle caliper, effective molding cannot be effectively formed, resulting in increased wall thickness, shrinkage and air hole defects, and low pass rate of pressure leakage detection of die castings.
The oil cylinder is used to match the connecting rod and the extrusion pin. By applying pressure to the thick wall when the casting is semi-solid, the local boosting molding device is used to force the shrinkage holes and loosening problems in larger parts of the wall thickness.
It improves the pass rate of pressurized leakage detection of die castings, reduces shrinkage holes and shrinkage defects, and improves product quality.
Smart Images
Figure CN223070413U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting molds, and more specifically, to a local pressurization forming device for an inverted hook structure of a central hole of a motorcycle caliper. Background Art
[0002] With the continuous development of technology, metal die-casting molds have been widely used in industrial production, and a large number of motorcycle braking metal parts have been transformed from traditional low-pressure casting and gravity casting to high-pressure casting. High-pressure die casting has been widely used in industries such as automobiles, electronics, instrumentation, and aviation due to its advantages of high efficiency, less or no cutting, good surface finish, and excellent mechanical properties. Its high efficiency, high quality, and ability to produce products with complex structures are very suitable for mass production of products.
[0003] Based on the above, the inventor found that: during the processing of motorcycle brake caliper parts, the central hole is a key part of the part. Due to the characteristics of high-pressure casting, the inverted hook part in the center cannot be made, which makes the machining allowance larger, the wall thickness increases, and the shrinkage cavity and gas hole defects at this part are significantly increased, resulting in a low passing rate of the pressure leakage detection of die-castings. Therefore, in view of this, the existing structure is studied and improved to provide a local pressurization forming device for an inverted hook structure of a central hole of a motorcycle caliper, in order to achieve a more practical value. Summary of the Utility Model
[0004] 1. Technical Problems to be Solved
[0005] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a local pressurization forming device for an inverted hook structure of a central hole of a motorcycle caliper, which can use an oil cylinder in cooperation with a connecting rod and an extrusion pin to apply pressure to the thick wall of the casting when it is in a semi-solid state in the cavity to forcibly compensate for shrinkage, so as to solve defects such as shrinkage cavity and shrinkage porosity in the key parts with larger wall thickness of die-castings, and improve the passing rate of the pressure leakage detection of die-castings.
[0006] 2. Technical Solutions
[0007] To solve the above problems, the utility model adopts the following technical solutions.
[0008] A local pressurized forming device for a reverse hook structure of a motorcycle caliper center hole, comprising two die feet. A male template is arranged between the tops of the two die feet. The top of the male template is connected to a female template through guide columns. On the sides of the male template and the female template close to each other, a male die core and a female die core are respectively arranged. A cavity is formed by combining the male die core and the female die core. Two support columns are arranged between the two die feet. An upper push plate and a lower push plate are slidably sleeved on the outer periphery of the support column. A quick-change pressing plate is installed at the bottom of the lower push plate. An oil cylinder is installed at the bottom of the quick-change pressing plate. A plurality of connecting rods are arranged at the bottom of the male template. A conduit is installed at the position of the male die core bottom corresponding to the connecting rod. The top end of the connecting rod extends into the cavity through the corresponding conduit and is fixedly connected to a pressing pin. The bottom end of one of the connecting rods sequentially penetrates through the upper push plate, the lower push plate and the quick-change pressing plate from top to bottom and is clamped and fixed to the output end of the oil cylinder.
[0009] Further, a plurality of support rods are fixedly connected to the sides of the two die feet close to each other. The top ends of the support rods are fixedly connected to the bottom of the lower push plate.
[0010] Further, reset rods are fixedly connected to the four corner positions of the top of the upper push plate. The top ends of the reset rods are inserted into the bottom of the male template.
[0011] Further, a plurality of push rods are fixedly connected to the top of the upper push plate. The top ends of the push rods are abutted against the bottom of the male template.
[0012] Further, a plurality of positioning rods are arranged between the two die feet. The upper push plate and the lower push plate are both slidably sleeved on the outer periphery of the positioning rods.
[0013] Further, a sprue bushing is installed at the top of the female template. The bottom of the sprue bushing is communicated with the inside of the cavity, and a locating ring is fixedly connected to the outer periphery of the top.
[0014] 3. Beneficial effects
[0015] Compared with the prior art, the advantages of the present utility model are as follows:
[0016] In this solution, through the setting of the oil cylinder and the cooperation of the connecting rod and the pressing pin, when the casting is in a semi-solid state in the cavity, the oil cylinder works to drive the pressing pin on the connecting rod to apply pressure to the thick wall of the casting to forcibly compensate for shrinkage, so as to solve the defects such as shrinkage cavity and shrinkage porosity in the key parts with relatively large wall thickness of the die casting, and improve the passing rate of the pressure leakage detection of the die casting.
[0017] The above description of the utility model content is only an overview of the technical solution of this application. In order to enable those of ordinary skill in the art to more clearly understand the technical solution of this application, and thus be able to implement it based on the content described in the specification and the drawings, and in order to make the above objects, other objects, features, and advantages of this application more easily understood, the following will be described in conjunction with the specific embodiments of this application and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of the specific embodiments of this application and other related contents, and should not be considered as a limitation to this application.
[0019] In the drawings of the specification:
[0020] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0021] Figure 2 is a schematic diagram of the bottom view structure of the present utility model;
[0022] Figure 3 is a schematic diagram of the disassembled structure of the present utility model;
[0023] Figure 4 is a schematic diagram of the internal structure of the present utility model.
[0024] Description of the reference numerals in the drawings:
[0025] 1. Mold foot;
[0026] 2. Male template;
[0027] 3. Female template;
[0028] 4. Male mold core;
[0029] 5. Female mold core;
[0030] 6. Support column;
[0031] 7. Upper push plate;
[0032] 8. Lower push plate;
[0033] 9. Quick-change pressure plate;
[0034] 10. Oil cylinder;
[0035] 11. Connecting rod;
[0036] 12. Conduit;
[0037] 13. Extrusion pin;
[0038] 14. Support rod;
[0039] 15. Reset rod;
[0040] 16. Push rod;
[0041] 17. Positioning rod;
[0042] 18. Sprue bushing;
[0043] 19. Locating ring. Detailed implementation manner
[0044] To describe in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of this application, etc., the following will be described in detail in combination with the listed specific embodiments and with reference to the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application, so they are only examples and cannot be used to limit the protection scope of this application.
[0045] Referring to "embodiment" in this article means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of this application. The term "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.
[0046] Unless otherwise defined, the meanings of the technical terms used in this article are the same as those generally understood by those skilled in the technical field to which this application belongs; the use of the relevant terms in this article is only to describe specific embodiments and is not intended to limit this application.
[0047] In the description of this application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships can exist. For example, X and / or Y means: there is X, there is Y, and there is both X and Y at the same time. In addition, the character " / " in this article generally represents an "or" logical relationship between the associated objects before and after.
[0048] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary-secondary or order relationship, etc. between these entities or operations.
[0049] Without further limitations, in this application, the terms "comprising", "including", "having" or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method or product that includes the said elements. Thus, in a process, method or product that includes a series of elements, it may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such a process, method or product.
[0050] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding" are understood not to include the number itself; expressions such as "above", "below", "within" are understood to include the number itself. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two). Similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in the same way, unless otherwise specifically defined.
[0051] In the description of the embodiments of this application, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiment or the drawing. This is only for the convenience of describing the specific embodiments of this application or facilitating the reader's understanding, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of this application.
[0052] Unless otherwise clearly specified or limited, in the description of the embodiments of this application, the terms "installed", "connected", "joined", "fixed", "set", etc. should be understood in a broad sense. For example, the said "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art to which this application pertains, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.
[0053] Embodiment:
[0054] Please refer to Figures 1-4, A local pressurization forming device for the reverse hook structure of the center hole of a motorcycle caliper, comprising two die feet 1. A male template 2 is arranged between the tops of the two die feet 1. The top of the male template 2 is connected to a female template 3 through guide posts. On the sides of the male template 2 and the female template 3 close to each other, a male die insert 4 and a female die insert 5 are respectively arranged. A cavity is formed by combining the male die insert 4 and the female die insert 5. Two support columns 6 are arranged between the two die feet 1. An upper push plate 7 and a lower push plate 8 are slidably sleeved on the outer periphery of the support column 6. And a quick-change pressing plate 9 is installed at the bottom of the lower push plate 8. An oil cylinder 10 is installed at the bottom of the quick-change pressing plate 9. A plurality of connecting rods 11 are arranged at the bottom of the male template 2. At the position of the male die insert 4 corresponding to the connecting rods 11 at the bottom, a conduit 12 is installed. The top of the connecting rod 11 extends into the cavity through the corresponding conduit 12 and is fixedly connected to a pressing pin 13. The bottom end of one of the connecting rods 11 sequentially penetrates through the upper push plate 7, the lower push plate 8 and the quick-change pressing plate 9 from top to bottom and is clamped and fixed to the output end of the oil cylinder 10.
[0055] Refer to Figure 3 , On the sides of the two die feet 1 close to each other, a plurality of support rods 14 are fixedly connected. The top of the support rod 14 is fixedly connected to the bottom of the lower push plate 8.
[0056] Refer to Figure 3 , At the four corner positions of the top of the upper push plate 7, reset rods 15 are fixedly connected. The top of the reset rod 15 is inserted into the bottom of the male template 2.
[0057] Refer to Figure 2 , A plurality of push rods 16 are fixedly connected to the top of the upper push plate 7. The top of the push rod 16 abuts against the bottom of the male template 2.
[0058] Refer to Figure 2 , A plurality of positioning rods 17 are arranged between the two die feet 1. The upper push plate 7 and the lower push plate 8 are both slidably sleeved on the outer periphery of the positioning rod 17.
[0059] Refer to Figure 1 , A gate bushing 18 is installed on the top of the female template 3. The bottom of the gate bushing 18 is communicated with the inside of the cavity, and a positioning ring 19 is fixedly connected to the outer periphery of the top.
[0060] In use: The molten metal is injected into the cavity through the sprue bushing 18. After the molten metal filling is completed and after a certain period of time, that is, during the solidification process of the casting, when the molten metal is in a semi-solid state in the cavity, the oil cylinder 10 is started. The operation of the oil cylinder 10 drives the extrusion pin 13 on one of the connecting rods 11 to apply pressure to the thick-walled part of the casting to force feeding to solve defects such as shrinkage cavities and porosity in the key parts with relatively large wall thickness of the die-casting part, improve the passing rate of the pressure leakage detection of the die-casting part, and then remove the quick-change pressing plate 9 and the oil cylinder 10 and replace them at the bottom of the other connecting rod 11, and connect the oil cylinder 10 to its bottom to locally apply pressure to another key part with relatively large wall thickness of the casting. Repeat the operation until all the key parts with relatively large wall thickness of the casting are subjected to pressure treatment.
[0061] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of this application and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.
[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered by the scope of the claims and the description of this application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. This application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.
Claims
1. A local pressurized forming device for a barb structure of a motorcycle caliper center hole, comprising two die feet (1), a male template (2) is arranged between the tops of the two die feet (1), and a female template (3) is connected to the top of the male template (2) through a guide post, and it is characterized in that: On one side of the male template (2) and the female template (3) close to each other, a male mold core (4) and a female mold core (5) are respectively arranged. A cavity is formed by the combination between the male mold core (4) and the female mold core (5). Two support columns (6) are arranged between the two mold feet (1). An upper push plate (7) and a lower push plate (8) are slidably sleeved on the outer periphery of the support column (6). A quick-change pressing plate (9) is installed at the bottom of the lower push plate (8). An oil cylinder (10) is installed at the bottom of the quick-change pressing plate (9). A plurality of connecting rods (11) are arranged at the bottom of the male template (2). A conduit (12) is installed at the bottom of the male mold core (4) corresponding to the position of the connecting rod (11). The top end of the connecting rod (11) extends into the cavity through the corresponding conduit (12) and is fixedly connected with a pressing pin (13). The bottom end of one of the connecting rods (11) sequentially penetrates through the upper push plate (7), the lower push plate (8) and the quick-change pressing plate (9) from top to bottom and is fixedly clamped with the output end of the oil cylinder (10).
2. The local pressurized forming device for the barb structure of the center hole of a motorcycle caliper according to claim 1, wherein: A plurality of support rods (14) are fixedly connected to one side of the two mold feet (1) close to each other. The top end of the support rod (14) is fixedly connected to the bottom of the lower push plate (8).
3. The partial pressurization forming device for the reverse hook structure of the central hole of a motorcycle caliper according to claim 1, characterized in that: Reset rods (15) are fixedly connected to the four corner positions of the top of the upper push plate (7). The top ends of the reset rods (15) are inserted into the bottom of the male template (2).
4. The local pressurization forming device for the barb structure of the central hole of a motorcycle caliper according to claim 1, characterized in that: A plurality of push rods (16) are fixedly connected to the top of the upper push plate (7). The top ends of the push rods (16) are abutted against the bottom of the male template (2).
5. The local pressurized forming device for the barb structure of the center hole of a motorcycle caliper according to claim 1, characterized in that: A plurality of positioning rods (17) are arranged between the two mold feet (1). The upper push plate (7) and the lower push plate (8) are both slidably sleeved on the outer periphery of the positioning rod (17).
6. The partial pressure boosting forming device for the barb structure of the center hole of a motorcycle caliper according to claim 1, characterized in that: A sprue bushing (18) is installed at the top of the female template (3). The bottom of the sprue bushing (18) is communicated with the inside of the cavity, and a locating ring (19) is fixedly connected to the outer periphery of the top.