Differential pressure mold cooling connection structure

Abstract

The utility model relates to differential pressure mould cooling technical field, and disclose a kind of differential pressure mould cooling connecting structure, solve the problem that existing waterway mounting plate integration thread is easy to be damaged, maintenance cost is high, downtime is long.It includes waterway mounting plate with cylindrical through hole and locating square groove, replaceable screw nut sleeve is equipped in through hole, including cylindrical sleeve and square seat, respectively with through hole, locating square groove transition cooperation, screw nut sleeve bottom is equipped with L-shaped support cushion block, it is also equipped with wedge-shaped cooperation surface compensation wear, sealing groove and high-temperature sealing ring;It can be reformed on the basis of original mounting plate.The utility model realizes screw nut sleeve modular replacement, greatly reduces maintenance cost, shortens downtime to 10 minutes, adapts existing equipment, meets the efficient operation demand of differential pressure casting steering knuckle production line.

Description

Technical Field

[0001] This utility model relates to the field of differential pressure mold cooling technology, and in particular to a differential pressure mold cooling connection structure. Background Technology

[0002] In the differential pressure casting process for producing steering knuckles, the water cooling system is a core component for controlling mold temperature and ensuring casting quality. Since steering knuckle castings must be formed under high temperature and high pressure conditions, the mold needs to be rapidly cooled to the optimal demolding temperature via the water cooling system. Therefore, the water channel mounting plate, as a key component connecting the water cooling system and the mold, must withstand long-term temperature cycling and fluid pressure. Its structural reliability directly affects the stability of the production line and the quality of the castings.

[0003] The existing water cooling system's water circuit mounting plate adopts an integrated structure of "directly machined threaded holes - bolt fastening," meaning that the mounting plate itself is directly machined with internal threaded holes for connection to the mold, and the mounting plate is fixed and sealed to the mold by fastening bolts passing through the threaded holes. This structure has significant drawbacks in practical applications: the threads are easily damaged and maintenance costs are high; under high-temperature environments, the thread material of the mounting plate is prone to creep, leading to thread deformation; simultaneously, frequent bolt removal is required during mold maintenance, easily resulting in wear and stripping; because the threads are integrated with the mounting plate itself, the entire mounting plate must be replaced after thread damage, resulting in high maintenance costs; replacing the integrated mounting plate requires interrupting the production process, causing long downtime, impacting production efficiency, and resulting in lost capacity. Therefore, there is an urgent need for an improved mounting plate structure that enables modular maintenance while balancing cost and sealing performance. Utility Model Content

[0004] The purpose of this utility model is to address the above-mentioned problems by providing a differential pressure mold cooling connection structure. The technical solution adopted by this utility model is as follows: A differential pressure mold cooling connection structure includes a water channel mounting plate with an axially penetrating cylindrical through hole. The lower end of the cylindrical through hole is connected to a positioning square groove. A replaceable threaded nut is provided inside the cylindrical through hole. The upper end of the threaded nut is a cylindrical sleeve that transitions with the cylindrical through hole, and the lower end is a square seat that is fixedly connected to the cylindrical sleeve. The square seat transitions with the positioning square groove. The inner hole of the cylindrical sleeve is machined with internal threads, and the specifications of the internal threads are adapted to the fastening bolts of the differential pressure casting mold.

[0005] Preferably, the outer wall of the cylindrical sleeve is provided with an annular groove along the circumference, and a high-temperature resistant sealing ring is embedded in the annular groove, and the high-temperature resistant sealing ring is sealed to the cylindrical through hole.

[0006] Preferably, the bottom of the nut sleeve is provided with an L-shaped pad, the L-shaped pad including an integrally formed seat plate and a vertical plate, the size of the seat plate is adapted to the positioning square groove, and is used to support the square seat of the nut sleeve; the vertical plate is perpendicular to the seat plate and is used to radially position the square seat of the nut sleeve.

[0007] Preferably, the L-shaped pad has a connecting through hole corresponding to the threaded nut, and the side of the threaded nut has a threaded hole. The fixing bolt passes through the connecting through hole of the L-shaped pad and is screwed into the threaded hole.

[0008] Preferably, the L-shaped pad has a through hole, and the inner side wall of the positioning groove of the water channel mounting plate has a threaded hole, and the fixing bolt passes through the through hole and is screwed into the threaded hole.

[0009] Preferably, the bottom of the square seat has a wedge-shaped mating surface corresponding to the contact surface of the seat plate, and the nut and the L-shaped pad are slidably mated through the wedge-shaped mating surface. The beneficial effects of this utility model are as follows: This utility model effectively solves the problems of easy damage to the threads of the water circuit mounting plate, high maintenance costs, long downtime, sealing failure, and resource waste in the prior art. Through the modular design of replaceable threaded nut and mounting plate, when the thread is damaged, only the low-cost threaded nut needs to be replaced, without replacing the entire mounting plate, which greatly reduces maintenance costs and avoids resource waste. The replacement process does not require disassembling the entire mold and water cooling pipeline, and the downtime is shortened from several hours to less than 10 minutes, which significantly improves production efficiency. The wedge-shaped mating surface can compensate for wear on the contact surface. By adjusting the insertion depth of the support pad, the support height of the threaded nut can be finely adjusted. It does not require replacing the pad, which extends its life and reduces costs. It can also adapt to different mold installation sizes and improve structural versatility. This utility model can be directly modified on the basis of the original mounting plate without manufacturing a new one, further saving costs and resources, and fully adapting to the actual operating needs of the differential pressure casting steering knuckle production line. Attached Figure Description

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0012] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0013] Figure 3 for Figure 1 A bottom view.

[0014] Figure 4 , Figure 5 for Figure 3 A cross-sectional view along the BB direction.

[0015] In the diagram: 10--Waterway mounting plate; 11--Cylindrical through hole; 12--Positioning square groove; 13--Base plate 13; 20--Threaded nut sleeve; 21--Cylindrical sleeve; 22--Square seat; 23--Annular groove; 24--High temperature resistant sealing ring; 30--L-shaped pad; 31--Seat plate; 32--Upright plate; 33--Fixing bolt; 40--Wedge-shaped mating surface. Detailed Implementation

[0016] 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] like Figure 1-5 As shown, a differential pressure mold cooling connection structure includes a water channel mounting plate 10. The water channel mounting plate 10 has an axially penetrating cylindrical through hole 11. The lower end of the cylindrical through hole 11 is connected to a positioning square groove 12. A replaceable threaded nut 20 is provided inside the cylindrical through hole 11. The upper end of the threaded nut 20 is a cylindrical sleeve 21 that transitions with the cylindrical through hole 11, and its lower end is a square seat 22 that is fixedly connected to the cylindrical sleeve 21. The square seat 22 transitions with the positioning square groove 12 to form a bidirectional positioning constraint. The inner hole of the cylindrical sleeve 21 is machined with internal threads, and the specifications of the internal threads are adapted to the fastening bolts of the differential pressure casting mold. During assembly, the threaded nut 20 is inserted through the bottom of the cylindrical through hole 11. The cylindrical sleeve 21 passes through the cylindrical through hole 11, and the square seat 22 falls into the positioning groove 12, completing the initial positioning of the threaded nut 20. When connecting the mold, the fastening bolt is screwed into the internal thread of the cylindrical sleeve 21 from above the water circuit mounting plate 10 and gradually tightened along the thread direction. During this process, the square seat 22 is secured by its fit with the positioning groove 12, restricting the rotation of the cylindrical sleeve 21 with the fastening bolt. Furthermore, as the preload of the fastening bolt is applied, the square seat 22 presses against the bottom end face of the cylindrical through hole 11, achieving a locking and fixing between the water circuit mounting plate 10 and the mold. When the internal thread of the threaded nut 20 is worn or stripped, the operator only needs to remove the fastening bolt, remove the damaged threaded nut 20 from the bottom of the cylindrical through hole 11, and replace it with a new one; there is no need to disassemble the entire water circuit mounting plate 10 and water cooling pipes.

[0018] This implementation method enables modular and quick replacement of the threaded sleeve 20, avoiding the scrapping of the entire mounting plate due to local thread damage, reducing maintenance costs by more than 90%; the replacement operation does not require interruption of the overall connection between the water cooling system and the mold, shortening downtime from 4-6 hours to less than 10 minutes, significantly reducing production capacity loss and ensuring continuous operation of the production line.

[0019] Preferably, such as Figure 4-5As shown, the outer wall of the cylindrical sleeve 21 has an annular groove 23 along its circumference. A high-temperature resistant sealing ring 24 is embedded in the annular groove 23, and the high-temperature resistant sealing ring 24 is sealed to the cylindrical through hole 11. The sealing structure improves the connection sealing performance, effectively prevents cooling water leakage, and ensures cooling efficiency and quality safety. At the same time, the high-temperature resistant sealing ring 24 can buffer the impact of temperature cycling on the mating surfaces, avoid wear caused by direct metal contact, and further improve the durability of the sealing structure.

[0020] Preferably, the bottom of the nut sleeve 20 is provided with an L-shaped pad 30, which includes an integrally formed base plate 31 and a vertical plate 32: the size of the base plate 31 is adapted to the positioning square groove 12 and is used to support the square seat 22 of the nut sleeve 20; the vertical plate 32 is perpendicular to the base plate 31 and is used to radially position the square seat 22 of the nut sleeve 20. During installation, the nut sleeve 20 is first axially inserted into the bottom of the cylindrical through hole 11, and then the L-shaped pad 30 is radially inserted into the side end of the positioning square groove 12, so that the bottom surface of the square seat 22 of the nut sleeve 20 abuts against the base plate 31, the side surface abuts against the vertical plate 32, and the bottom of the supporting top block abuts against the bottom plate 13 of the mounting plate, thus providing positioning support for the nut sleeve 20. The L-shaped pad 30 is a universal part that does not need to be replaced during maintenance, which further reduces the design size of the threaded nut 20 and saves processing and manufacturing costs. At the same time, the separate threaded nut 20 and L-shaped pad 30 are easy to disassemble and assemble, which can effectively avoid interference with the base plate 13 during assembly.

[0021] Preferably, such as Figure 4-5 As shown, the L-shaped pad 30 has a connecting through hole corresponding to the threaded nut 20, and the threaded nut 20 has a threaded hole on its side. The fixing bolt 33 passes through the connecting through hole of the L-shaped pad 30 and is screwed into the threaded hole to realize the connection and fixation between the L-shaped pad 30 and the threaded nut 20, and to prevent the L-shaped pad 30 from accidentally falling off.

[0022] As another implementation of the differential pressure mold cooling connection structure, such as Figure 5 As shown, the L-shaped pad 30 has a through hole, and the inner wall of the positioning square groove 12 of the water channel mounting plate 10 has a threaded hole. The fixing bolt 33 passes through the through hole and is screwed into the threaded hole, thereby connecting and fixing the L-shaped pad 30 to the water channel mounting plate 10. The rigid connection between the L-shaped pad 30 and the mounting plate can improve the vibration resistance of the overall structure and adapt to the continuous operation conditions of the production line.

[0023] Furthermore, such as Figure 5As shown, the bottom of the square base 22 has a wedge-shaped mating surface 40 corresponding to the contact surface of the base plate 31. The threaded nut 20 and the L-shaped pad 30 slide together through the wedge-shaped mating surface 40, so that the support height of the L-shaped pad 30 has a certain adjustment capability. In this embodiment, the L-shaped pad 30 is reserved with radial movement space to avoid interference with the movement of the L-shaped pad 30. When the components are worn to different degrees due to frequent use, the depth of the L-shaped pad 30 inserted into the positioning square groove 12 can be adjusted radially. The inclined surface characteristics of the wedge shape can be used to compensate for the wear, so as to achieve fine adjustment of the support height of the threaded nut 20. The wedge-shaped mating surface 40 can effectively compensate for the height deviation caused by component wear, avoid the need to replace the support pad to restore the positioning accuracy due to the wear gap, extend the service life of the support pad, and further reduce maintenance costs. At the same time, the fine-tuning structure can adapt to the installation size differences of different batches of molds, improving the versatility of the structure.

[0024] The above-disclosed embodiments are merely specific examples of this utility model, but this utility model is not limited thereto. For those skilled in the art, any modifications made without departing from the principle of this utility model should be considered as protected by this utility model.

Claims

1. A differential pressure mold cooling connection structure, characterized in that: The system includes a water channel mounting plate (10), which has an axially penetrating cylindrical through hole (11). The lower end of the cylindrical through hole (11) is connected to a positioning square groove (12). A replaceable threaded nut sleeve (20) is provided inside the cylindrical through hole (11). The upper end of the threaded nut sleeve (20) is a cylindrical sleeve (21) that transitions with the cylindrical through hole (11), and the lower end is a square seat (22) that is fixedly connected to the cylindrical sleeve (21). The square seat (22) transitions with the positioning square groove (12). The inner hole of the cylindrical sleeve (21) is machined with an internal thread, the specification of which is adapted to the fastening bolt of the differential pressure casting mold.

2. The differential pressure mold cooling connection structure according to claim 1, characterized in that: The outer wall of the cylindrical sleeve (21) is provided with an annular groove (23) along the circumference. A high-temperature resistant sealing ring (24) is embedded in the annular groove (23), and the high-temperature resistant sealing ring (24) is sealed to the cylindrical through hole (11).

3. The differential pressure mold cooling connection structure according to claim 1, characterized in that: The bottom of the nut sleeve (20) is provided with an L-shaped pad (30). The L-shaped pad (30) includes an integrally formed seat plate (31) and a vertical plate (32). The size of the seat plate (31) is adapted to the positioning square groove (12) and is used to support the square seat (22) of the nut sleeve (20). The vertical plate (32) is perpendicular to the seat plate (31) and is used to radially position the square seat (22) of the nut sleeve (20).

4. The differential pressure mold cooling connection structure according to claim 3, characterized in that: The L-shaped pad (30) has a connecting through hole corresponding to the nut (20), and the nut (20) has a threaded hole on its side. The fixing bolt (33) passes through the connecting through hole of the L-shaped pad (30) and is screwed into the threaded hole.

5. The differential pressure mold cooling connection structure according to claim 3, characterized in that: The L-shaped pad (30) has a through hole, and the inner side wall of the positioning square groove (12) of the water channel mounting plate (10) has a threaded hole. The fixing bolt (33) passes through the through hole and is screwed into the threaded hole.

6. The differential pressure mold cooling connection structure according to claim 5, characterized in that: The bottom of the square seat (22) is provided with a wedge-shaped mating surface (40) corresponding to the contact surface of the seat plate (31), and the nut sleeve (20) and the L-shaped pad (30) slide together through the wedge-shaped mating surface (40).

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