A rearward retreat prevention structure of a slider in a steering gear housing mold

Abstract

The utility model discloses a steering casing body mould inner sliding block prevents the structure of retrogressing, including inner core pulling sliding block, first oil cylinder, first lock rod, second lock rod and second oil cylinder, and the inner core pulling sliding block sets up in fixed mould, and the inner core pulling sliding block removes with first oil cylinder drive, and first lock rod sets up in fixed mould, and first lock rod removes with second oil cylinder drive, second lock rod sets up on movable mould, when locking, first lock rod and inner core pulling sliding block insert joint fixed, and second lock rod and first lock rod insert joint fixed. The utility model drives first lock rod to insert into the inner core pulling sliding block after the inner core pulling sliding block in place through oil cylinder, and the separation effect of force is used ingeniously, and the inner core pulling sliding block can be locked with smaller oil cylinder force, guarantees that the inner core pulling sliding block does not retrogress. Simultaneously still sets up second lock rod, and first lock rod is locked through second lock rod, and further prevents the inner core pulling sliding block retrogresses.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to a sliding block anti-backward structure inside a steering gear housing mold. Background Technology

[0002] The automotive steering gear is the core component of a vehicle's steering system, responsible for converting the rotational motion of the steering wheel into the steering action of the wheels. The steering gear housing houses the core components such as the steering gear gears, racks, and bearings, and withstands steering forces and vibrations. The die-casting process for the steering gear housing must balance structural complexity, dimensional accuracy, and material properties. Depending on the product structure, the mold often requires a slanted slider core-pulling mechanism, which is directly locked by a hydraulic cylinder during production. The hydraulic cylinder provides the back-pull force during die casting to maintain balance. If the projected area of ​​the slanted slider is too large, the casting pressure exceeds the counter-force provided by the hydraulic cylinder, causing the slanted slider to retract during production. This results in defects such as changes in product appearance and dimensional inconsistencies. Utility Model Content

[0003] To address the shortcomings of the existing technology, the main objective of this utility model is to overcome these deficiencies and disclose an anti-backward sliding block structure for a steering gear housing mold. The structure includes an inner core-pulling slider, a first hydraulic cylinder, a first locking rod, a second locking rod, and a second hydraulic cylinder. The inner core-pulling slider is disposed within a fixed mold and is moved by the first hydraulic cylinder. The first locking rod is disposed within the fixed mold and is moved by the second hydraulic cylinder. The second locking rod is disposed on a moving mold. When locked, the first locking rod is inserted and fixed to the inner core-pulling slider, and the second locking rod is inserted and fixed to the first locking rod.

[0004] Furthermore, the inner core-pulling slider is provided with a first through-hole in a radial direction, and when locked, the first locking rod is inserted into the first locking hole.

[0005] Furthermore, it also includes a support block, which is disposed at one end of the first lock hole. When locked, the end of the first locking rod protrudes from the first lock hole and acts on the support block.

[0006] Furthermore, the first locking rod includes a guide portion and a locking portion that are continuously arranged, and the locking portion includes a first mating surface and an auxiliary surface.

[0007] Furthermore, the first mating surface mates with the inclined surface of the inner core-pulling slider.

[0008] Furthermore, a guide sleeve is provided inside the fixed mold, and the first locking rod is slidably connected to the guide sleeve.

[0009] Furthermore, the first locking rod is radially provided with a second locking hole, and when locked, the second locking rod provided on the moving mold is inserted into the second locking hole.

[0010] Furthermore, a fixed base is provided on the fixed mold, and the fixed base is provided with a through hole and a third locking hole that allow the first locking rod to pass through. When locked, the third locking hole corresponds to the second locking hole, and the second locking rod connects the second locking hole and the third locking hole.

[0011] Furthermore, a second mating surface is provided on the second locking rod, and the second mating surface mates with the inclined surface of the second locking hole.

[0012] The beneficial effects achieved by this utility model are as follows:

[0013] This invention, after the inner core-pulling slider is in position, uses a hydraulic cylinder to drive a first locking rod to insert into the inner core-pulling slider. It cleverly utilizes the force separation effect, locking the inner core-pulling slider with a relatively small hydraulic cylinder force, ensuring it does not move backward. Simultaneously, a second locking rod is provided to lock the first locking rod, further preventing the inner core-pulling slider from moving backward. Both the first and second locking rods have beveled edges on their locking parts, facilitating insertion into the lock hole and ensuring the bevels fit tightly against the inner wall of the lock hole for even better anti-reverse performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the sliding block retraction structure installed inside the mold of the steering gear housing according to the present invention;

[0015] Figure 2 for Figure 1 Top view;

[0016] Figure 3 for Figure 2 CC section view;

[0017] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0018] Figure 5 This is a three-dimensional structural diagram of a sliding block retraction structure inside a steering gear housing mold according to the present invention;

[0019] Figure 6 This is a schematic diagram of the structure of the first locking rod;

[0020] Figure 7 This is a schematic diagram of the second locking rod;

[0021] The attached figures are labeled as follows:

[0022] 1. Inner core-pulling slider; 2. First hydraulic cylinder; 3. First locking rod; 4. Second locking rod; 5. Second hydraulic cylinder; 6. Support block; 7. Fixed seat; 8. Fixed mold; 9. Moving mold; 11. First locking hole; 31. Guide part; 32. Locking part; 33. Second locking hole; 34. Guide sleeve; 321. First mating surface; 322. Auxiliary surface; 41. Second mating surface; 71. Third locking hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0024] A sliding block anti-backward structure inside a steering gear housing mold, such as Figures 1-7 As shown, the system includes an inner core-pulling slider 1, a first hydraulic cylinder 2, a first locking rod 3, a second locking rod 4, and a second hydraulic cylinder 5. The inner core-pulling slider 1 is located within the fixed mold 8 and is moved by the first hydraulic cylinder 2. The first locking rod 3 is also located within the fixed mold 8 and is moved by the second hydraulic cylinder 5. The second locking rod 4 is located on the moving mold 9. When locked, the first locking rod 3 is inserted and fixed to the inner core-pulling slider 1, and the second locking rod 4 is inserted and fixed to the first locking rod 3. In use, after the first hydraulic cylinder 2 drives the inner core-pulling slider 1 to its position, the second hydraulic cylinder 5 drives the first locking rod 3 to move and lock it to the inner core-pulling slider 1. After the moving and fixed molds are closed, the second locking rod 4 locks to the first locking rod 3. Through multi-directional insertion locking, the inner core-pulling slider 1 can be effectively prevented from retracting.

[0025] In one embodiment, such as Figures 1-7 As shown, the inner core-pulling slider 1 has a radially penetrating first locking hole 11. When locked, the first locking rod 3 is inserted into the first locking hole 11. After the first locking rod 3 is inserted, the retraction force of the inner core-pulling slider 1 acts on the first locking rod 3, thereby dispersing the force of the first hydraulic cylinder 2.

[0026] In the above embodiments, such as Figures 1-7 As shown, it also includes a support block 6, which is disposed at one end of the first locking hole 11. When locked, the end of the first locking rod 3 protrudes from the first locking hole 11 and acts on the support block 6. The support block 6 disperses the retraction force acting on the first locking rod 3. Preferably, the support block 6 is provided with a connecting hole, which matches the shape of the end of the first locking rod 3. When locked, the end of the first locking rod 3 is inserted into the connecting hole, so that the first locking rod 3 and the support block 6 are relatively fixed.

[0027] In one embodiment, such as Figures 1-7As shown, the first locking rod 3 includes a guide portion 31 and a locking portion 32 continuously arranged. The locking portion 32 includes a first mating surface 321 and an auxiliary surface 322. A plane that mates with the first mating surface 321 is provided inside the first locking hole 11. The auxiliary surface 322 mates with the inner wall of the first locking hole 11, so that the first locking rod 3 and the inner core-pulling slider 1 are relatively stationary in the direction of the auxiliary surface 322.

[0028] In the above embodiments, such as Figures 1-7 As shown, the first mating surface 321 mates with the inclined surface of the inner core-pulling slider 1. Specifically, the first mating surface 321 is an inclined surface, and the part of the inner side of the first locking hole 11 that mates with the first mating surface 321 is also an inclined surface. This increases the diameter of one end of the first locking hole 11, making it easier for the first locking rod 3 to be inserted into the first locking hole 11.

[0029] In one embodiment, such as Figures 1-7 As shown, a guide sleeve 34 is provided inside the fixed mold 8, and the first locking rod 3 is slidably connected to the guide sleeve 34. This avoids direct contact between the first locking rod 3 and the fixed mold 8, reducing subsequent maintenance costs.

[0030] In one embodiment, such as Figures 1-7 As shown, the first locking rod 3 is radially provided with a second locking hole 33. When locked, the second locking rod 4 provided on the moving mold 9 is inserted into the second locking hole 33.

[0031] In the above embodiments, such as Figures 1-7 As shown, a fixed base 7 is provided on the fixed mold 8. The fixed base 7 has a through hole that allows the first locking rod 3 to pass through and a third locking hole 71. When locked, the third locking hole 71 corresponds to the second locking hole 33, and the second locking rod 4 connects the second locking hole 33 and the third locking hole 71. This ensures that the retraction force of the second locking rod 4 acts on the fixed base 7, preventing it from being transmitted to the connection between the second locking rod 4 and the moving mold 9, thus avoiding damage to the connection between the second locking rod 4 and the moving mold 9.

[0032] In one embodiment, such as Figures 1-7 As shown, a second mating surface 41 is provided on the second locking rod 4, and the second mating surface 41 mates with the inclined surface of the second locking hole 33. Similarly, the engagement of the second locking rod 4 with the inclined surface of the second locking hole 33 can increase the opening size at one end of the second locking hole 33, making it easier for the second locking rod 4 to be inserted into the second locking hole 33.

[0033] When using this utility model, such as Figures 1-7As shown, during mold closing, the first hydraulic cylinder 2 drives the inner core-pulling slider 1 into position. Subsequently, the second hydraulic cylinder 5 drives the first locking rod 3, causing the locking part 32 to pass through the first locking hole 11 and insert into the connecting hole of the support block 6. The first mating surface 321 is in close contact with the inclined surface inside the first locking hole 11. Finally, the moving mold 9 closes, driving the second locking rod 4 to insert into the second locking hole 33 and the third locking hole 71, completing the anti-retraction locking of the inner core-pulling slider 1. During mold opening, the moving mold 9 moves upward, driving the second locking rod 4 away from the second locking hole 33 and the third locking hole 71. Then, the second hydraulic cylinder 5 drives the first locking rod 3 to reset. At this time, the first hydraulic cylinder 2 drives the inner core-pulling slider to push out, completing one cycle.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Any modifications or equivalent substitutions to the present utility model without departing from the spirit and scope thereof should be covered within the protection scope of the claims of the present utility model.

Claims

1. A sliding block anti-backward structure inside a steering gear housing mold, characterized in that, The system includes an inner core-pulling slider, a first hydraulic cylinder, a first locking rod, a second locking rod, and a second hydraulic cylinder. The inner core-pulling slider is disposed within a fixed mold and is moved by the first hydraulic cylinder. The first locking rod is disposed within the fixed mold and is moved by the second hydraulic cylinder. The second locking rod is disposed on a moving mold. When locked, the first locking rod is inserted and fixed to the inner core-pulling slider, and the second locking rod is inserted and fixed to the first locking rod.

2. The anti-backward sliding block structure inside the steering gear housing mold according to claim 1, characterized in that, The inner core-pulling slider is radially provided with a through first locking hole. When locked, the first locking rod is inserted into the first locking hole.

3. The anti-backward sliding block structure inside the steering gear housing mold according to claim 2, characterized in that, It also includes a support block, which is disposed at one end of the first lock hole. When locked, the end of the first locking rod protrudes from the first lock hole and acts on the support block.

4. The anti-backward sliding block structure inside the steering gear housing mold according to claim 1, characterized in that, The first locking rod includes a guide portion and a locking portion that are continuously arranged, and the locking portion includes a first mating surface and an auxiliary surface.

5. The anti-backward sliding block structure inside the steering gear housing mold according to claim 4, characterized in that, The first mating surface mates with the inclined surface of the inner core-pulling slider.

6. The anti-backward sliding block structure inside the steering gear housing mold according to claim 1, characterized in that, A guide sleeve is provided inside the fixed mold, and the first locking rod is slidably connected to the guide sleeve.

7. The anti-backward sliding block structure inside the steering gear housing mold according to claim 1, characterized in that, The first locking rod is radially provided with a second locking hole. When locking, the second locking rod provided on the moving mold is inserted into the second locking hole.

8. The anti-backward sliding block structure inside the steering gear housing mold according to claim 7, characterized in that, A fixed base is provided on the fixed mold. The fixed base is provided with a through hole and a third locking hole that allow the first locking rod to pass through. When locked, the third locking hole corresponds to the second locking hole, and the second locking rod connects the second locking hole and the third locking hole.

9. The anti-backward sliding block structure inside the steering gear housing mold according to claim 7, characterized in that, The second locking rod is provided with a second mating surface, which mates with the inclined surface of the second locking hole.

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