Core-pulling sliding block structure of steering gear mold

Abstract

The utility model discloses a core-pulling slide block structure of a steering gear mould, which comprises a main mould closing unit arranged on the outer side surface of a mould base; the secondary mold closing unit is arranged on the main mold closing unit; the main sliding block is arranged in the sliding groove of the mold base and is connected with the telescopic end of the main mold closing unit; a secondary sliding hole is formed in the main sliding block; the secondary sliding block is arranged in the secondary sliding hole of the primary sliding block; the secondary sliding block is connected with the telescopic end of the secondary mold closing unit; the mold closing block is fixedly connected with the main sliding block, and a core pulling hole right opposite to the secondary sliding hole is formed in the mold closing block; the core rod is arranged in the core pulling hole and is connected with the secondary sliding block; the point location cooling pipes are arranged in the mold assembling block; and the main cooling pipe is arranged in the core rod. According to the utility model, cooling point positions can be set more accurately, so that molten aluminum is cooled more uniformly and quickly; meanwhile, the core and the end face can be separated independently, demolding stress is reduced, the mold size is reduced, and the service life of the mold is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the mould production and manufacturing field, concretely relates to the steering gear mould core pulling slider structure. BACKGROUND

[0002] The steering gear is an important part of the automobile control system, and helps the driver to reduce the force when the driver turns the steering wheel, so as to achieve the purpose of the driver being relaxed and convenient when driving. The end face structure of the steering gear is relatively complex, such as curved surface, deep hole, groove and the like, so that the surface thereof needs to be cooled relatively accurately in the process of die casting, so that the overall cooling speed of the die casting aluminum liquid is uniform, the internal stress distribution of the die casting steering gear is uniform, and a high-quality product is obtained.

[0003] At present, the end face of the steering gear has many cooling points, but the conventional point cooling arrangement will interfere with the slider of the existing die casting mould and the mold opening and closing control system, so that the end face of the steering gear cannot be directly cooled, and thus the overall cooling speed needs to be slowed down to avoid a large temperature difference, which reduces the die casting efficiency of the product, and the internal stress distribution of the product is poor due to the inaccurate cooling, so that the product quality cannot be continuously improved.

[0004] At the same time, since the end face of the steering gear is complex, the core shaft and the end face of the steering gear are separated from the mould core at the same time, so that a large pulling force is generated, so that a larger hydraulic cylinder type needs to be used for the mold opening and closing control system, and the overall volume of the mould is increased. Moreover, the core shaft and the end face are separated at the same time, so that the separation force is concentrated in some areas, resulting in stress concentration between the product surface and the mould, reducing the service life of the mould, and even causing the product and the mould to scratch each other, finally leading to the damage of the mould. UTILITY MODEL CONTENTS

[0005] In view of the above defects of the prior art, the purpose of the utility model is to provide a steering gear mould core pulling slider structure, which can more accurately set the cooling point, so that the aluminum liquid is cooled more uniformly and rapidly, and the core and the end face can be independently separated, the demolding stress is reduced, the volume of the mould is reduced, and the service life of the mould is increased.

[0006] The purpose of the utility model is achieved through the following technical scheme:

[0007] The steering gear mould core pulling slider structure comprises:

[0008] The main mold closing unit is arranged on the outer side of the mold base.

[0009] The secondary mold closing unit is arranged on the main mold closing unit, and the extension direction of the secondary mold closing unit is parallel to the extension direction of the main mold closing unit.

[0010] The main slider is arranged in the sliding slot of the mold base and connected with the telescopic end of the main mold closing unit.

[0011] The secondary slider is arranged in the secondary sliding hole of the main slider and seamlessly fitted with the side wall of the secondary sliding hole.

[0012] The mold closing block is fixed with the main slider and arranged in the sliding slot of the mold base, and the outer side surface is provided with a mold closing surface.

[0013] The core rod is arranged in the core pulling hole and seamlessly fitted with the side wall of the core pulling hole.

[0014] The point cooling pipes are arranged in the mold closing block and communicated with the external cooling system through the main slider.

[0015] The main cooling pipe is arranged in the core rod and communicated with the external cooling system through the secondary slider.

[0016] Further, the main mold closing unit comprises:

[0017] The two main hydraulic cylinders are fixedly arranged on the mold base and located on both sides of the sliding slot of the mold base.

[0018] The telescopic frame is arranged on the telescopic end of the two main hydraulic cylinders and fixed with the main slider.

[0019] Further, the main hydraulic cylinder is cylindrical in shape, and the telescopic frame is provided with a guide ring sleeved on the outer surface of the main hydraulic cylinder.

[0020] The main mold closing unit further comprises a bottom sliding plate arranged on the outer surface of the mold base, supporting the telescopic frame and limiting and guiding the telescopic displacement of the telescopic frame.

[0021] Further, the secondary mold closing unit comprises:

[0022] The secondary hydraulic cylinder is fixedly arranged on the main mold closing unit and connected with the secondary slider.

[0023] Further, the outer side surface of the main slider is provided with an inclined main anti-back surface, and the outer surface of the secondary slider is provided with an inclined secondary anti-back surface.

[0024] Further, the point cooling pipes comprise:

[0025] The independent cooling pipes are arranged in the mold closing block, and each independent cooling pipe is communicated with the external cooling system through the main slider.

[0026] A plurality of parallel cooling pipes are arranged in the mold closing module; the liquid inlet ends of each parallel cooling pipe are connected in parallel to the external cooling system, and the liquid outlet ends of each parallel cooling pipe are connected in parallel to the external cooling system.

[0027] Further, the mold closing module comprises:

[0028] A conversion plate is fixed to the main slider and is provided with a through hole for the core rod to pass through; a plurality of through holes are arranged on the conversion plate for the independent cooling pipes to pass through; a pipeline is arranged inside to connect the liquid inlet ends and the liquid outlet ends of all the parallel cooling pipes; the pipeline is connected to the external cooling system; the pipeline passes through the outer surface of the conversion plate to form an exposed interface, and the interface is connected to the point cooling pipe;

[0029] An outer mold is provided with a mold closing surface on the outer side, a through hole for the point cooling pipe to pass through, and a core pulling hole for the core rod to pass through.

[0030] Further, a containing groove is arranged on the surface of the main slider opposite to the conversion plate, and the containing groove contains the liquid inlet pipe and the liquid outlet pipe of the independent cooling pipe.

[0031] Further, a boss is arranged on the surface of the conversion plate opposite to the outer slider; a groove corresponding to the boss is arranged on the main slider; and the containing groove is arranged at the bottom of the groove.

[0032] Further, an inlay column is further arranged on the outer mold, the outer contour of the inlay column is T-shaped, the head end of the inlay column passes through the outer mold and is located outside the mold closing surface, and the tail end of the inlay column is located between the outer mold and the conversion plate and is fixed by the conversion plate.

[0033] Due to the adoption of the above technical scheme, the mold closing mechanism has the following advantages:

[0034] 1. The mold closing mechanism is divided into a main mold closing unit and a secondary mold closing unit, the mold closing module and the core rod are controlled separately, the core rod and the mold closing module can be separated from the pressure-cast product during mold opening, the demolding stress is reduced, the stress concentration is improved, the overall size of the mold is reduced, the cost is reduced, and the product quality is improved.

[0035] 2. The independent point cooling pipe and the main cooling pipe can realize uniform and rapid cooling of the aluminum liquid, improve the pressure casting efficiency, improve the internal stress concentration of the pressure-cast product caused by uneven cooling speed, and improve the quality of the pressure-cast product.

[0036] Other advantages, objects and features of the present application will be described in the subsequent description, and to some extent, will be apparent to those skilled in the art based on the study of the following text, or can be taught from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0037] The drawings of the utility model are as follows:

[0038] Figure 1 It is the first three-dimensional structure schematic view of the core-pulling slider structure of the steering gear mold in the embodiment.

[0039] Figure 2 It is the second three-dimensional structure schematic view of the core-pulling slider structure of the steering gear mold in the embodiment.

[0040] Figure 3 It is the first three-dimensional structure schematic view of the main mold closing unit and the secondary mold closing unit in the embodiment.

[0041] Figure 4 It is the second three-dimensional structure schematic view of the main mold closing unit and the secondary mold closing unit in the embodiment.

[0042] Figure 5 It is the first three-dimensional structure schematic view of the main slider, the secondary slider, the mold closing block, the core rod and the point cooling pipe in the embodiment.

[0043] Figure 6 It is the second three-dimensional structure schematic view of the main slider, the secondary slider, the mold closing block, the core rod and the point cooling pipe in the embodiment.

[0044] Figure 7 It is the first three-dimensional structure schematic view of the main slider and the secondary slider in the embodiment.

[0045] Figure 8 It is the second three-dimensional structure schematic view of the main slider and the secondary slider in the embodiment.

[0046] Figure 9 It is the first three-dimensional structure schematic view of the main slider in the embodiment.

[0047] Figure 10 It is the second three-dimensional structure schematic view of the main slider in the embodiment.

[0048] Figure 11 It is the three-dimensional structure schematic view of the secondary slider in the embodiment.

[0049] Figure 12 It is the first three-dimensional structure schematic view of the secondary slider, the conversion plate, the core rod and the point cooling pipe in the embodiment.

[0050] Figure 13 It is the second three-dimensional structure schematic view of the secondary slider, the conversion plate, the core rod and the point cooling pipe in the embodiment.

[0051] Figure 14 It is the front view structure schematic view of the secondary slider, the conversion plate, the core rod and the point cooling pipe in the embodiment.

[0052] Figure 15 It isFigure 14 Schematic diagram of the structure at section AA in the middle.

[0053] Figure 16 This is a schematic diagram of the first three-dimensional structure of the outer module in this embodiment.

[0054] Figure 17 This is a schematic diagram of the second three-dimensional structure of the outer module in this embodiment.

[0055] Figure 18 This is a three-dimensional structural diagram of the mold base in this embodiment.

[0056] Figure 19 This is a three-dimensional structural diagram of the steering gear mold core-pulling slider structure installed on the mold base in this embodiment.

[0057] In the diagram: 11. Main hydraulic cylinder; 12. Telescopic frame; 121. Guide ring; 13. Bottom slide plate; 21. Secondary hydraulic cylinder; 3. Main slider; 31. Secondary sliding hole; 32. Main anti-recoil surface; 33. Groove; 34. Accommodation groove; 4. Secondary slider; 41. Secondary anti-recoil surface; 51. Conversion plate; 511. Through hole; 512. Pipeline; 513. Interface; 514. Boss; 515. Through hole; 52. Outer module; 521. Mold closing surface; 522. Through hole; 523. Insert pillar; 524. Core pulling hole; 6. Core rod; 71. Independent cooling pipe; 72. Parallel cooling pipe; 8. Main cooling pipe; 100. Mold base; 101. Slide groove. Detailed Implementation

[0058] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0059] Example:

[0060] like Figures 1 to 19 As shown, the steering gear mold core-pulling slider structure includes:

[0061] The main mold closing unit is located on the outer side of the mold base 100;

[0062] The secondary mold-closing unit is installed on the main mold-closing unit, and its extension and retraction direction is parallel to that of the main mold-closing unit.

[0063] The main slider 3 is located in the groove 101 of the mold base 100 and is connected to the telescopic end of the main mold closing unit; the main slider 3 is provided with a secondary sliding hole 31.

[0064] The secondary slider 4 is set inside the secondary sliding hole 31 of the main slider 3, and its outer side is seamlessly fitted with the side wall of the secondary sliding hole 31; the secondary slider 4 is connected to the telescopic end of the secondary mold closing unit.

[0065] The mold closing module is fixedly connected with the main sliding block 3 and is located in the sliding groove 101 of the mold base 100 and is provided with a mold closing surface 521 on the outer side surface; the mold closing module is provided with a core pulling hole 524 opposite to the secondary sliding hole 31;

[0066] The core rod 6 is arranged in the core pulling hole 524 and is seamlessly matched with the side wall of the core pulling hole 524 on the outer side surface; the core rod 6 is connected with the secondary sliding block 4;

[0067] A plurality of point cooling pipes are arranged in the mold closing module and pass through the main sliding block 3 to communicate with the external cooling system;

[0068] The main cooling pipe 8 is arranged in the core rod 6 and passes through the secondary sliding block 4 to communicate with the external cooling system.

[0069] The point cooling pipe and the main cooling pipe 8 adopt a conventional mold jet pipe structure.

[0070] The mold closing mechanism is divided into a main mold closing unit and a secondary mold closing unit, so that the mold closing module and the core rod 6 can be controlled respectively, the core rod 6 and the mold closing module can be separated from the pressure-cast product during mold opening, the demolding stress is reduced, the stress concentration is improved, the overall size of the mold is reduced, the cost is reduced, and the product quality is improved.

[0071] In the embodiment, the main mold closing unit comprises:

[0072] Two main hydraulic cylinders 11 are fixedly arranged on the mold base 100 in parallel at the two sides of the sliding groove 101 of the mold base 100;

[0073] The telescopic frame 12 is arranged on the telescopic end of the two main hydraulic cylinders 11 and is fixedly connected with the main sliding block 3, and the secondary mold closing unit is arranged on the telescopic frame 12.

[0074] The telescopic movement of the two main hydraulic cylinders 11 is synchronously transmitted through the telescopic frame 12, the type of the hydraulic cylinder is reduced, the size of the mold is effectively reduced, and the cost is reduced.

[0075] In the embodiment, the main hydraulic cylinder 11 has a cylindrical shape; and the telescopic frame 12 is provided with a guide ring 121 which is sleeved on the outer surface of the main hydraulic cylinder 11.

[0076] The main mold closing unit further comprises a bottom sliding plate 13 which is arranged on the outer surface of the mold base 100, supports the telescopic frame 12 and limits and guides the telescopic displacement of the telescopic frame 12.

[0077] The telescopic movement of the main hydraulic cylinder 11 is guided through the guide ring 121, so that the displacement accuracy of the telescopic frame 12 is ensured. Meanwhile, the bottom sliding plate 13 is provided with a structure with a strip-shaped groove, and the strip-shaped groove is matched with the guide rail of the telescopic frame 12, so that the sliding guiding and limiting of the bottom sliding plate 13 to the telescopic frame 12 can be realized.

[0078] In the embodiment, the secondary die closing unit comprises:

[0079] The secondary hydraulic cylinder 21 is fixed at the fixed end of the primary die closing unit and connected at the telescopic end of the secondary slide 4.

[0080] In the embodiment, the outer side surface of the primary slide 3 is provided with an inclined primary anti-retraction surface 32; the outer surface of the secondary slide 4 is provided with an inclined secondary anti-retraction surface 41; the primary anti-retraction surface 32 and the secondary anti-retraction surface 41 are coplanar after the die closing is completed.

[0081] The primary anti-retraction surface 32 and the secondary anti-retraction surface 41 can be limited by the die holder 100 after the die closing, so as to avoid the primary slide 3 and the secondary slide 4 from retracting due to the pressure of the aluminum liquid during the pouring of the aluminum liquid.

[0082] In the embodiment, the point cooling pipes comprise:

[0083] The independent cooling pipes 71 are arranged in the die closing block and each independent cooling pipe 71 is communicated with the external cooling system through the primary slide 3;

[0084] The parallel cooling pipes 72 are arranged in the die closing block; the liquid inlet ends of each parallel cooling pipe 72 are communicated with the external cooling system in parallel, and the liquid outlet ends of each parallel cooling pipe 72 are communicated with the external cooling system in parallel.

[0085] The independent cooling pipes 71 can independently control the flow and flow rate of the cooling liquid to effectively control the cooling, and the parallel cooling pipes 72 can be controlled as a whole.

[0086] In the embodiment, the die closing block comprises:

[0087] The conversion plate 51 is fixedly connected with the primary slide 3 and provided with a through hole 515 through which the core rod 6 passes; the conversion plate 51 is provided with a plurality of perforations 511 through which the independent cooling pipes 71 pass; the conversion plate 51 is internally provided with a pipeline 512 which respectively communicates the liquid inlet ends and the liquid outlet ends of all the parallel cooling pipes 72; the pipeline 512 is communicated with the external cooling system; the pipeline 512 passes through the outer surface of the conversion plate 51 to form an exposed interface 513, and the interface 513 is communicated with the point cooling pipes;

[0088] The outer die block 52 is provided with a die closing surface 521 on the outer side surface, a through hole 522 through which the point cooling pipes pass, and a core pulling hole 524 through which the core rod 6 passes.

[0089] The parallel cooling pipes 72 are arranged through the conversion plate 51, so that the cooling pipes can be arranged at any position and will not interfere with each other or other components, thereby realizing the uniform and rapid cooling of the aluminum liquid, improving the die casting efficiency, improving the internal stress concentration of the die casting product due to the non-uniform cooling speed, and improving the quality of the die casting product.

[0090] In the embodiment, the surface of the main slider 3 opposite to the conversion plate 51 is provided with a containing groove 34 for containing the inlet pipe and outlet pipe of the independent cooling pipe 71.

[0091] In the embodiment, the surface of the conversion plate 51 opposite to the outer slider is provided with a boss 514; the main slider 3 is provided with a groove 33 corresponding to the boss 514; and the containing groove 34 is arranged at the bottom of the groove 33.

[0092] The boss 514 and the groove 33 can improve the connection stability and the fixing strength between the conversion plate 51 and the main slider 3.

[0093] In the embodiment, the outer module 52 is further provided with an inlay column 523, the outer contour of the inlay column 523 is T-shaped, the head end of the inlay column 523 penetrates through the outer module 52 and is located outside the mold closing surface 521, and the tail end of the inlay column 523 is located between the outer module 52 and the conversion plate 51 and is fixed by the conversion plate 51.

[0094] The outer module 52 is provided with a stepped groove matched with the tail end of the inlay column 523, and the tail end of the inlay column 523 is pressed and fixed by the conversion plate, so that the inlay block is convenient to replace, and no other parts for fixing the inlay column 523 are added.

[0095] The steering gear mold core-pulling slider structure in the embodiment works as follows, according to the figure, the utility model is installed, and then the remaining mold seat 100, mold core and mold closing assembly are installed. Figure 19 When the die casting is completed, the external cooling system injects cooling water into each point pipe, controls the temperature of the aluminum liquid, and stops until the die casting is completed.

[0096] When the die casting is completed, the external cooling system injects cooling water into each point pipe, controls the temperature of the aluminum liquid, and stops until the die casting is completed.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions, and all should be covered in the scope of the claims of the present application.

Claims

1. A core-pulling slider structure for a steering gear mold, characterized in that, include: The main mold closing unit is located on the outer side of the mold base; The secondary mold-closing unit is installed on the main mold-closing unit, and its extension and retraction direction is parallel to that of the main mold-closing unit. The main slider is located in the groove of the mold base and is connected to the telescopic end of the main mold closing unit; the main slider is provided with secondary sliding holes; The secondary slider is set inside the secondary sliding hole of the main slider, and its outer surface is seamlessly fitted with the side wall of the secondary sliding hole; the secondary slider is connected to the telescopic end of the secondary mold closing unit; The assembly module is fixedly connected to the main slider and located in the slide groove of the mold base. The outer side is provided with an assembly surface; the assembly module is provided with a core-pulling hole that is directly opposite to the secondary slide hole. The core rod is set inside the core-pulling hole, and its outer side is seamlessly fitted with the side wall of the core-pulling hole; the core rod is connected to the secondary slider. Several cooling pipes are installed inside the assembly module, passing through the main slider and connecting to the external cooling system; The main cooling pipe is located inside the core rod and passes through the secondary slider to connect with the external cooling system.

2. The steering gear mold core-pulling slider structure according to claim 1, characterized in that, The main mold-closing unit includes: Two main hydraulic cylinders are mounted side by side on the mold base with their fixed ends positioned on both sides of the slide groove of the mold base; The telescopic frame is mounted on the telescopic ends of the two main hydraulic cylinders and is fixedly connected to the main slide block. The secondary mold closing unit is mounted on the telescopic frame.

3. The steering gear mold core-pulling slider structure according to claim 2, characterized in that, The main hydraulic cylinder is cylindrical in shape; the telescopic frame is provided with a guide ring that is sleeved on the outer surface of the main hydraulic cylinder; The main mold closing unit also includes a bottom slide plate, which is disposed on the outer surface of the mold base to support the telescopic frame and limit and guide the telescopic displacement of the telescopic frame.

4. The steering gear mold core-pulling slider structure according to claim 1, characterized in that, The secondary molding unit includes: The secondary hydraulic cylinder has its fixed end fixed to the main mold closing unit and its telescopic end connected to the secondary slide block.

5. The steering gear mold core-pulling slider structure according to claim 1, characterized in that, The outer surface of the main slider is provided with an inclined main anti-recoil surface; the outer surface of the secondary slider is provided with an inclined secondary anti-recoil surface; after the main slider and the secondary slider are closed, the main anti-recoil surface and the secondary anti-recoil surface are coplanar.

6. The steering gear mold core-pulling slider structure according to claim 1, characterized in that, Several of the aforementioned point cooling pipes include: Several independent cooling pipes are installed inside the module, and each independent cooling pipe passes through the main slider and is connected to the external cooling system. Several parallel cooling pipes are installed inside the module; the liquid inlet of each parallel cooling pipe is connected to the external cooling system after being connected in parallel, and the liquid outlet of each parallel cooling pipe is connected to the external cooling system after being connected in parallel.

7. The steering gear mold core-pulling slider structure according to claim 6, characterized in that, The merging module includes: The conversion plate is fixedly connected to the main slider and has a through hole for the core rod to pass through; the conversion plate has several through holes for independent cooling pipes to pass through; the interior has a pipeline that connects the liquid inlet and liquid outlet of all parallel cooling pipes respectively; the pipeline is connected to the external cooling system; the pipeline passes through the outer surface of the conversion plate to form an exposed interface, and the interface is connected to the point cooling pipe; The outer module has a mold-closing surface on its outer side, and through holes for point cooling pipes to pass through, as well as core-pulling holes for core rods to pass through.

8. The steering gear mold core-pulling slider structure according to claim 7, characterized in that, The main slider has a receiving groove on the surface opposite the conversion plate, which is used to accommodate the inlet and outlet pipes of the independent cooling pipe.

9. The steering gear mold core-pulling slider structure according to claim 8, characterized in that, The surface of the conversion plate facing the external slider has a boss; the main slider has a groove corresponding to the boss; the receiving groove is located at the bottom of the groove.

10. The steering gear mold core-pulling slider structure according to claim 7, characterized in that, The outer module is also provided with a block post. The outer contour of the block post is T-shaped. The head end passes through the outer module and is located outside the mold closing surface. The tail end is located between the outer module and the conversion plate. The tail end is limited and fixed by the conversion plate.

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