Die for processing motorcycle frame

Abstract

The utility model discloses a mould for motorcycle frame processing, including upper die subassembly and lower die subassembly, upper die subassembly includes upper die fixed base, upper die seat, be provided with upper die seat in upper die fixed base, be provided with upper die cavity in upper die seat, lower die subassembly includes lower die fixed base, lower die seat, rear abstract die subassembly, be provided with lower die seat in lower die fixed base, be provided with the lower die cavity that cooperates with upper die cavity in lower die seat, still be equipped with the hydraulic pressure air -exhaust valve subassembly for the lower die cavity in -out vacuum extraction of upper die fixed base, and the hydraulic pressure air -exhaust valve subassembly includes air -exhaust valve, oil pressure motor, and the output interface of oil pressure motor is connected with air -exhaust valve, and the side of upper die fixed base is provided with the air -exhaust hole that communicates with lower die cavity, and the air -exhaust hole top is provided with the air inlet channel that communicates up and down, and the side of air inlet channel is provided with the air inlet pipe that cooperates with air inlet channel, and one way air inlet valve is provided with the air inlet pipe another end, and air -exhaust valve inserts into the channel above air inlet channel.

Description

Technical Field

[0001] This utility model relates to the technical field of molding dies, specifically a mold for processing motorcycle frames. Background Technology

[0002] like Figure 1 The motorcycle frame shown is a framework structure that spans the front and rear axles of the motorcycle, forming its base. The frame must possess sufficient strength and rigidity to withstand the loads from the motorcycle and rider, as well as the impacts transmitted from the wheels. Its function is to support and connect the various assemblies of the motorcycle, maintaining their relatively correct positions, and bearing various loads from both inside and outside the motorcycle.

[0003] Current motorcycle die-casting molds, such as the low-pressure casting mold for an aluminum alloy motorcycle frame disclosed in patent application number 202322055576.5, include a platform with a lower mold mounting plate at the top. The lower mold mounting plate includes a lower mold, an upper mold on the lower mold, and an upper die plate at the top of the upper mold. A cavity is formed between the lower and upper molds. Several core seats are provided on the lower mold, and sand cores for forming the inner cavity of the casting are installed on the core seats. Several water-cooling channels are provided in the upper and lower molds. A slag collection bag is provided on the side of the lower mold cavity. An exhaust device is provided near the cavity in the upper mold, but the exhaust device is not connected to the cavity. A sprue is provided in the upper mold, and an insulated gate is provided in the lower mold. However, this structure has several problems in die casting. Because the vacuum of the internal cavity cannot be guaranteed during the die casting process, the surface of the final product still has air bubbles, the overall strength is not high, and it is easy to deform. It cannot meet the current requirements for high strength of motorcycle frames, so improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to provide a mold for processing motorcycle frames to solve the problems mentioned in the background art, such as the presence of air bubbles on the surface of existing motorcycle die-casting molds, low overall strength, and easy deformation of motorcycle frames, which cannot meet the current requirements for high strength of motorcycle frames.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mold for processing motorcycle frames, comprising an upper mold assembly and a lower mold assembly. The upper mold assembly includes an upper mold fixing seat and an upper mold base. The upper mold fixing seat contains an upper mold base, and the upper mold base contains an upper mold cavity. The lower mold assembly includes a lower mold fixing seat, a lower mold base, and a rear ejector assembly. The lower mold fixing seat contains a lower mold base, and the lower mold base contains a lower mold cavity that mates with the upper mold cavity. The rear ejector assembly is located behind the lower mold fixing seat and is used for molding the product. The invention is characterized in that: the upper mold fixing seat is further provided with a hydraulic vacuum valve assembly for evacuating the lower mold cavity, the hydraulic vacuum valve assembly includes a vacuum valve and a hydraulic motor, the output interface of the hydraulic motor is connected to the vacuum valve, the side of the lower mold seat is provided with a vacuum hole communicating with the lower mold cavity, an air inlet channel communicating with the upper and lower parts is provided above the vacuum hole, an air inlet pipe cooperating with the air inlet channel is provided on the side of the air inlet channel, a one-way air inlet valve is provided at the other end of the air inlet pipe, and the vacuum valve is inserted into the channel above the air inlet channel.

[0006] Preferably, for ease of installation, the upper mold fixing seat is provided with a clearance notch, the hydraulic motor is located inside the clearance notch, and a positioning plate is provided on the side of the clearance notch, with the input interface of the hydraulic motor passing through the positioning plate.

[0007] Preferably, to improve sealing, the lower end of the air extraction valve is provided with a silicone sealing cover that abuts against the outer periphery of the air extraction hole when the mold is closed.

[0008] Preferably, for ease of installation, the hydraulic motor is fixed on a connecting bracket, which is fixed above the upper mold base, and the lower end of the air extraction valve passes through the upper mold base and engages with the air extraction hole.

[0009] Preferably, the rear ejection assembly includes a first hydraulic cylinder, a sliding block, and a rear ejection slider. The first hydraulic cylinder is fixed behind the lower mold fixing seat by a cylinder seat. The sliding block is connected to the push rod of the first hydraulic cylinder. The other end of the sliding block is connected to the rear ejection slider, which is inserted into the lower mold cavity.

[0010] Preferably, in order to improve the accuracy of mold closing, a wedge block is provided on the side of the sliding block near the first oil cylinder, and an inclined boss is provided on one side of the upper mold fixing seat to abut against the outer side of the wedge block when the mold is closed.

[0011] Preferably, to further improve demolding efficiency and avoid product deformation during demolding, the rear sliding block and the sliding block are provided with a positioning seat. A slanted slider is movably inserted into the positioning seat. The front end of the slanted slider is provided with an ejector pin for holding the product during demolding. The rear end of the slanted slider is connected to a push rod extending out of the outside of the sliding block. A return spring is sleeved on the push rod, with one end abutting against the outside of the sliding block and the other end abutting against a nut on the push rod. The bottom side of the upper mold base is provided with a slanted ejector rod that can be inserted into the slanted hole of the slanted slider. When the mold is closed, the slanted ejector rod is inserted into the slanted hole to move the slanted slider outward.

[0012] Compared with the existing technology, this structure is equipped with a hydraulic vacuum valve assembly between the upper mold and the lower mold. When the mold is closed, the hydraulic vacuum valve assembly operates synchronously with the die casting process. The hydraulic motor drives the vacuum valve to perform a vacuum operation inside the mold cavity, thereby ensuring that the product surface is free of bubbles and not easily deformed during product molding, and ultimately improving the overall strength of the finished product. Attached Figure Description

[0013] Figure 1 This is a structural diagram of an existing motorcycle frame; Figure 2 This is a schematic diagram of the overall structure of a mold for processing a motorcycle frame in Example 1; Figure 3 This is a schematic diagram of the lower mold assembly in Example 1. Figure 1 ; Figure 4 for Figure 3 A schematic diagram of the structure when the center positioning seat is separated from other components; Figure 5 This is a schematic diagram of the lower mold assembly in Example 1. Figure 2 ; Figure 6 This is a schematic diagram of the upper mold assembly in Example 1. Figure 1 ; Figure 7 This is a schematic diagram of the structure of the upper mold assembly and the inclined slider in Example 1; Figure 8 This is a schematic diagram of the lower mold base in Example 1; Figure 9 This is a schematic diagram of the upper mold assembly in Example 1 when the upper mold fixing base is separated from other components; Figure 10 This is a schematic diagram of the combined structure of the air extraction valve, hydraulic motor, and connecting bracket in Example 1; Figure 11 This is a schematic diagram of the structure of the upper mold assembly, the inclined slider, the positioning seat, the push rod, the ejector pin, the inclined ejector rod, and the spring combination in Example 1.

[0014] In the figure: 1. Upper mold fixing seat, 101. 2. Upper mold base, 3. Upper mold cavity, 4. Lower mold fixing seat, 5. Lower mold base, 6. Rear ejection assembly, 601. First oil cylinder, 602. Sliding block, 603. Rear ejection slider, 604. Cylinder seat, 604. Lower mold cavity, 7. Air extraction valve, 8. Hydraulic motor, 9. Air extraction hole, 10. Air inlet channel, 11. Air inlet pipe, 12. One-way air inlet valve, 13. Clearance notch, 14. Positioning plate, 15. Silicone sealing cover, 16. Connecting bracket, 17. Positioning seat, 18. Sliding slider, 19. Sliding ejector rod, 20. Push rod, 21. Return spring, 22. Nut, 23. Ejector pin, 24. Wedge block, 25. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0017] Example 1 Please see Figures 2-11 As shown, the assembly includes an upper mold assembly and a lower mold assembly. The upper mold assembly includes an upper mold fixing base 1 and an upper mold base 2. The upper mold base 2 is disposed within the upper mold fixing base 1, and an upper mold cavity 3 is disposed within the upper mold base 2. The lower mold assembly includes a lower mold fixing base 4, a lower mold base 5, and a rear ejection assembly 6. The lower mold base 5 is disposed within the lower mold fixing base 4, and a lower mold cavity 7 is disposed within the lower mold base 5 that mates with the upper mold cavity 3. The rear ejection assembly 6 is located behind the lower mold fixing base 4 and is used to mold the rear of the product. The upper mold fixing base 1 is also provided with a mechanism for... A hydraulic vacuum valve assembly for vacuuming is provided in the lower mold cavity 7. The hydraulic vacuum valve assembly includes a vacuum valve 8 and a hydraulic motor 9. The output interface of the hydraulic motor 9 is connected to the vacuum valve 8. A vacuum hole 10 communicating with the lower mold cavity 7 is provided on the side of the lower mold base 5. An air inlet channel 11 communicating vertically is provided above the vacuum hole 10. An air inlet pipe 12 cooperating with the air inlet channel 11 is provided on the side of the air inlet channel. A one-way air inlet valve 13 is provided at the other end of the air inlet pipe 12. The vacuum valve 8 is inserted into the channel above the air inlet channel 11.

[0018] Preferably, for ease of installation, the upper mold fixing base 1 is provided with a clearance notch 14, the hydraulic motor 9 is located within the clearance notch 14, and a positioning plate 15 is provided on the side of the clearance notch 14. The input interface of the hydraulic motor 9 passes through the positioning plate 15, and the hydraulic motor 9 is fixed on a connecting bracket 17. The connecting bracket 17 is fixed above the upper mold base 2. The lower end of the vacuum valve 8 passes through the upper mold base 2 and cooperates with the vacuum hole 10. Through the above structural settings, the installation and operation of the hydraulic vacuum valve assembly are convenient. At the same time, in order to improve the sealing performance, the lower end of the vacuum valve 8 is provided with a silicone sealing cover 16 that abuts against the outer circumference of the vacuum hole 10 when the mold is closed. As the mold is closed, the silicone sealing cover 16 moves downward and abuts against the outer circumference of the vacuum hole 10, further ensuring the sealing performance and avoiding the problem of air leakage during vacuuming.

[0019] Preferably, the rear ejection assembly 6 includes a first hydraulic cylinder 601, a sliding block 602, and a rear ejection slider 603. The first hydraulic cylinder 601 is fixed behind the lower mold fixing seat 4 by a cylinder seat 604. The sliding block 602 is connected to the push rod of the first hydraulic cylinder 601. The other end of the sliding block 602 is connected to the rear ejection slider 603. The rear ejection slider 603 is inserted into the lower mold cavity 7 and the rear of the product is formed by the rear ejection assembly 6.

[0020] Preferably, in order to improve the accuracy of mold closing, a wedge block 25 is provided on the side of the sliding block 602 near the first oil cylinder 601, and an inclined boss 101 is provided on one side of the upper mold fixing seat 1 to abut against the outer side of the wedge block 25 when the mold is closed. When the mold is closed, the cooperation between the inclined boss 101 and the wedge block 25 ensures that the mold closing is more accurate.

[0021] Preferably, the rear sliding block 603 and the sliding block 602 are provided with a positioning seat 18. A slanted sliding block 19 is movably inserted into the positioning seat 18. The front end of the slanted sliding block 19 is provided with an ejector pin 24 for holding the product during demolding. The rear end of the slanted sliding block 19 is connected to a push rod 21 extending out of the sliding block 602. A return spring 22 is sleeved on the push rod 21, with one end abutting against the outside of the sliding block 602 and the other end abutting against a nut 23 on the push rod 21. The bottom side of the upper mold fixing seat 1 is provided with a slanted ejector rod 20 that can be inserted into the slanted hole 191 of the slanted sliding block 19. When the mold is closed, the slanted ejector rod 20 is inserted into the slanted hole 191 for... The inclined slide block 19 is moved outward, and the ejector pin 24 is inserted into the mold cavity after passing through the rear ejector block 603. With the above structure, when the mold is closed, as the upper mold assembly moves downward to close with the lower mold assembly, the inclined ejector rod 20 is inserted into the inclined hole 191 of the inclined slide block 19, thereby pushing the inclined slide block 19 outward. This prevents the ejector pin 24 at the front end from pressing against the inner wall of the mold cavity and preventing the finished product from being formed. When the mold is opened, as the upper mold assembly moves downward, the inclined slide block 19 moves inward, eventually pressing against the already formed product. At the same time, as the rear ejector assembly moves outward, it prevents the finished product from being carried out, which would cause the finished product to deform. This also further improves the demolding efficiency.

[0022] This structure features a hydraulic vacuum valve assembly between the upper and lower molds. During mold closing, the hydraulic vacuum valve assembly operates synchronously with the die-casting process. The hydraulic motor 9 drives the vacuum valve 8 to perform a vacuuming operation inside the mold cavity, ensuring that the product surface is free of air bubbles and does not easily deform during product molding, ultimately improving the overall strength of the finished product. Furthermore, during demolding, when the mold is opened, the one-way air inlet valve 13 is opened, and air is introduced into the air inlet channel 11 through the air inlet pipe 12 to allow air to enter, avoiding the problem of difficulty in demolding later due to internal vacuuming.

[0023] Furthermore, it should be noted that in order to further ensure the sealing performance during vacuuming, a sealing ring needs to be set between the upper mold base 2 and the lower mold base 5, and the sealing ring is set on the outside of the mold cavity. In addition, each of the other air outlets and air inlets is also equipped with a corresponding sealing ring to further achieve the sealing effect. As for how to set the sealing ring, it is a conventional technology in this field, so it will not be described in detail.

[0024] It should also be noted that other structures involved in this mold are all conventional technologies in this field, and therefore will not be described in detail. Moreover, the hydraulic motor 9 and the air extraction valve 8 mentioned are both commercially available finished products.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mold for processing a motorcycle frame, comprising an upper mold assembly and a lower mold assembly, wherein the upper mold assembly comprises an upper mold fixing seat (1) and an upper mold base (2), the upper mold fixing seat (1) being provided with the upper mold base (2), and the upper mold base (2) being provided with an upper mold cavity (3); the lower mold assembly comprises a lower mold fixing seat (4), a lower mold base (5), and a rear ejector assembly (6), wherein the lower mold fixing seat (4) is provided with the lower mold base (5), and the lower mold base (5) is provided with a lower mold cavity (7) that cooperates with the upper mold cavity (3); the rear ejector assembly (6) is located behind the lower mold fixing seat (4) and is used to mold the rear of the product, characterized in that: The upper mold fixing seat (1) is also provided with a hydraulic vacuum valve assembly for vacuuming the lower mold cavity (7). The hydraulic vacuum valve assembly includes a vacuum valve (8) and a hydraulic motor (9). The output interface of the hydraulic motor (9) is connected to the vacuum valve (8). The side of the lower mold seat (5) is provided with a vacuum hole (10) that communicates with the lower mold cavity (7). Above the vacuum hole (10) is an air inlet channel (11) that communicates with the upper and lower parts. The side of the air inlet channel (11) is provided with an air inlet pipe (12) that cooperates with the air inlet channel (11). The other end of the air inlet pipe (12) is provided with a one-way air inlet valve (13). The vacuum valve (8) is inserted into the channel above the air inlet channel (11).

2. The mold for processing motorcycle frames according to claim 1, characterized in that: The upper mold fixing seat (1) is provided with a clearance notch (14), the hydraulic motor (9) is located in the clearance notch (14), and a positioning plate (15) is provided on the side of the clearance notch (14). The input interface of the hydraulic motor (9) passes through the positioning plate (15).

3. The mold for processing motorcycle frames according to claim 1 or 2, characterized in that: The lower end of the air extraction valve (8) is provided with a silicone sealing cover (16) that abuts against the outer periphery of the air extraction hole (10) when the mold is closed.

4. The mold for processing motorcycle frames according to claim 1 or 2, characterized in that: The hydraulic motor (9) is fixed on a connecting bracket (17), which is fixed above the upper mold base (2). The lower end of the air extraction valve (8) passes through the upper mold base (2) and cooperates with the air extraction hole (10).

5. The mold for processing motorcycle frames according to claim 1 or 2, characterized in that: The rear ejection assembly (6) includes a first hydraulic cylinder (601), a sliding block (602), and a rear ejection slider (603). The first hydraulic cylinder (601) is fixed behind the lower mold fixing seat (4) by a cylinder seat (604). The sliding block (602) is connected to the push rod of the first hydraulic cylinder (601). The other end of the sliding block (602) is connected to the rear ejection slider (603). The rear ejection slider (603) is inserted into the lower mold cavity (7).

6. The mold for processing motorcycle frames according to claim 5, characterized in that: The sliding block (602) is also provided with a wedge (25) on the side near the first oil cylinder (601), and the upper mold fixing seat (1) is provided with an inclined boss (101) that abuts against the outer side of the wedge (25) when the mold is closed.

7. The mold for processing motorcycle frames according to claim 5, characterized in that: The rear sliding block (603) and the sliding block (602) are provided with a positioning seat (18). A slanted slider (19) is movably inserted into the positioning seat (18). The front end of the slanted slider (19) is provided with an ejector pin (24) for holding the product during demolding. The rear end of the slanted slider (19) is connected to a push rod (21) that extends out of the sliding block (602). The push rod (21) is fitted with a return spring (22) with one end abutting against the outside of the sliding block (602) and the other end abutting against the nut (23) on the push rod (21). The bottom side of the upper mold fixing seat (1) is provided with a slanted ejector rod (20) that can be inserted into the slanted hole (191) of the slanted slider (19). When the mold is closed, the slanted ejector rod (20) is inserted into the slanted hole (191) to move the slanted slider (19) outward.

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