A casting mold for producing a copper casting

Abstract

The present application relates to centrifugal casting technical field, especially to a kind of casting mould for copper casting production, including mould cylinder, the front end of the mould cylinder is sleeved with sleeve, the front end of the sleeve is fixedly connected with front cover, the front surface of the front cover is equipped with vertical cavity, the inboard of the vertical cavity is slidably inserted with vertical bar, the inside of the mould cylinder is equipped with horizontal cavity, the inboard of the horizontal cavity is slidably inserted with horizontal bar by reset mechanism, the lower surface rear end of the vertical bar is fixedly connected with plug-in block, the plug-in block is inserted with the upper surface of horizontal bar, the rear end of the horizontal bar is fixedly connected with connecting plate, the inboard rear end of the mould cylinder is slidably inserted with back plate, the lower end of the connecting plate is fixedly connected with the outer surface of back plate, the present application is integrated step by step demoulding by relying on traction hook, heavy tooling is saved, it is simple and easy to operate, unloading efficient, also can avoid forming sleeve inner wall scratch, improve yield.

Description

Technical Field

[0001] This invention relates to the field of centrifugal casting technology, and more particularly to a casting mold for producing copper castings. Background Technology

[0002] Flange-edged copper pipe sleeves are commonly used wear-resistant bushing components in hydraulic, mining, and transmission equipment. Mass production generally adopts horizontal metal mold centrifugal casting molding.

[0003] The conventional demolding method in the centrifugal casting industry uses an external traction hook to pull out the casting. In this process, after the casting is completed and initially cooled, the end cap of the forming cylinder is removed. Then, an internal support tensioning fixture is hoisted by a crane and inserted into the inner cavity of the casting. The hydraulic mechanism drives the jaws to open outward, so that the jaws fit and tighten the inner wall of the casting. Subsequently, the external traction structure drives the fixture to slowly move outward, and the casting is pulled out of the forming cylinder by the pulling force. This process is cumbersome and inconvenient.

[0004] Furthermore, under the action of high-speed centrifugal force, the molten metal solidifies tightly against the inner wall of the forming cylinder. After the casting cools and solidifies, the outer wall of the copper sleeve adheres tightly to the inner wall of the forming cylinder, generating significant frictional resistance. This makes the casting prone to jamming inside the forming cylinder, difficult to remove by simply pulling it out, resulting in significant demolding difficulties. Furthermore, the pulling process can easily cause scratches on the inner wall of the casting. Therefore, a casting mold for copper casting production is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by providing a casting mold for the production of copper castings.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a casting mold for producing copper castings, comprising a casting cylinder, a sleeve fitted at the front end of the casting cylinder, a front cover fixedly connected to the front end of the sleeve, a vertical moving cavity formed at the edge of the front surface of the front cover, a vertical moving strip slidably inserted into the inner side of the vertical moving cavity, a horizontal cavity formed inside the casting cylinder, a horizontal strip slidably inserted into the inner side of the horizontal cavity via a reset mechanism, an insert block fixedly connected to the rear end of the lower surface of the vertical moving strip, the insert block being inserted into and cooperating with the upper surface of the horizontal strip, a connecting plate fixedly connected to the rear end of the horizontal strip, the casting cylinder... A rear plate is slidably inserted into the inner rear end of the cylinder. The lower end of the connecting plate is fixedly connected to the outer surface of the rear plate. A fixed seat is fixedly connected to the edge of the front surface of the front cover. The front end of the horizontal bar slides through the fixed seat and is fixedly connected to a hanging column. A connecting seat is fixedly provided at the front end of the fixed seat. A locking elastic mechanism is provided between the connecting seat and the hanging column. A wide annular groove is opened inside the sleeve. The wide annular groove is interconnected with the interior of the vertical moving cavity. A ring is slidably inserted into the inner side of the wide annular groove. A protruding arc edge is provided on the inner bottom edge of the ring. The upper end of the protruding arc edge forms a smooth and continuous curved surface with the inner wall of the sleeve. By inserting the towing hook under the hanging post and pulling it forward, the horizontal bar and the rear plate can be moved forward synchronously. Pull the traction hook upwards, and the traction hook will move the hanging column upwards. The insert block will move upwards synchronously with the vertical moving bar and detach from the horizontal bar.

[0007] Preferably, a front flange is fixedly connected to the front end of the outer surface of the casting cylinder, and the front flange is fixedly connected to the rear end of the sleeve. A rear flange is fixedly connected to the rear end of the outer surface of the casting cylinder, and the rear end of the rear flange is fixedly connected to the drive disc.

[0008] Preferably, the reset mechanism includes a connecting plate fixedly connected to the rear end of the horizontal bar, a movable opening is provided at the rear end of the inner wall of the casting cylinder, the lower end of the connecting plate slides through the inner side of the movable opening, a movable cavity is provided above the rear end of the horizontal cavity, the upper end of the connecting plate slides through the inner side of the movable cavity, a reset T-post is fixedly connected to the upper end of the front surface of the connecting plate, a reset spring is sleeved on the outer surface of the reset T-post, and the reset spring is located inside the movable cavity, and the reset T-post slides through the front surface of the movable cavity.

[0009] Preferably, a slot is provided at the front end of the inner top face of the horizontal cavity, and the insert block slides through the inner side of the slot.

[0010] Preferably, the locking elastic mechanism includes a vertical slider fixedly connected to the front end of the hanging column. The vertical slider slides into the inner side of the connecting seat. A vertical T-post is fixedly connected to the upper surface of the vertical slider. The upper end of the vertical T-post slides through the inner top surface of the connecting seat. A compression spring is sleeved on the outer surface of the vertical T-post. The compression spring is located inside the connecting seat. A limiting plate is connected to the rear of the upper surface of the connecting seat through a pushing mechanism. When the limiting plate moves forward, it blocks the upper end of the vertical T-post to limit its upward movement.

[0011] Preferably, the jacking mechanism includes guide bars fixedly connected to two corners at the front of the limiting plate, guide cylinders slidably sleeved on the front ends of the two guide bars, the guide cylinders being fixedly connected to the upper surface of the connecting seat, and a jacking spring being provided on the inner side of the connecting seat, the front and rear ends of the jacking spring being fixedly connected to the front inner wall of the connecting seat and the front end face of the guide bar, respectively.

[0012] Preferably, the limiting plate has a V-shaped opening at the rear.

[0013] Preferably, the rear surface of the fixing seat is provided with a vertical sliding opening, the vertical sliding opening is connected to the front end of the vertical moving cavity, and the front end of the vertical moving bar is slidably inserted into the inner side of the vertical sliding opening.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This device can complete the entire demolding process of ejecting the formed tube sleeve and pulling it out as a whole by relying solely on the traction hook. It does not require the use of a crane to install internal support and tensioning fixtures, saving multiple operation steps such as tooling hoisting and internal cavity tensioning, greatly simplifying the casting removal process and reducing the difficulty of on-site operation. 2. In the demolding process of this invention, when the traction hook pulls forward, it simultaneously pushes the rear end of the formed tube sleeve, and then the whole material is dragged out. The step-by-step actions are driven by the same traction component in a continuous manner, without the need to change tooling or switch drive equipment, thus improving the unloading efficiency of centrifugal casting. 3. The lifting and traction hook of this invention is simple to operate, and the structure used for traction is integrated into the front cover. It does not require the use of heavy equipment such as hydraulically driven internal support fixtures or overhead cranes, thus avoiding the defect of traditional internal support fixtures scratching the inner wall of the forming sleeve when tightened, and effectively improving the qualification rate of casting products. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a casting mold for producing copper castings according to the present invention; Figure 2 This is a cross-sectional view of a casting mold for producing copper castings according to the present invention; Figure 3 This invention relates to a casting mold for producing copper castings. Figure 2 Enlarged view of point A in the middle; Figure 4This invention relates to a casting mold for producing copper castings. Figure 2 Enlarged view at point B in the middle; Figure 5 This is a cross-sectional view of the fixing seat of a casting mold for producing copper castings according to the present invention; Figure 6 This is a cross-sectional view of the sleeve section of a casting mold for producing copper castings according to the present invention; Figure 7 This is a diagram showing the state of a casting mold used in the production of copper castings according to the present invention when the traction hook is pulled a certain distance. Figure 8 This invention relates to a casting mold for producing copper castings. Figure 7 Enlarged view at point C; Figure 9 This is a diagram showing the state of the traction hook of a casting mold for copper casting production according to the present invention when it is pulled up; Figure 10 This invention relates to a casting mold for producing copper castings. Figure 9 Enlarged view of point D in the middle.

[0016] The components are as follows: 1. Casting cylinder; 2. Front cover; 3. Sleeve; 4. Vertical moving cavity; 5. Vertical moving bar; 6. Insert block; 7. Horizontal cavity; 8. Horizontal bar; 9. Slot; 10. Moving port; 11. Connecting plate; 12. Rear plate; 13. Moving cavity; 14. Reset T-post; 15. Reset spring; 16. Fixed seat; 17. Connecting seat; 18. Vertical sliding port; 19. Hanging post; 20. Vertical slider; 21. Vertical T-post; 22. Compression spring; 23. Limiting plate; 24. V-shaped opening; 25. Guide cylinder; 26. Pushing spring; 27. Guide bar; 28. Wide annular groove; 29. ​​Ring; 30. Protruding arc edge; 31. Rear flange; 32. Drive disc; 33. Front flange; 34. Traction hook; 35. Formed tube sleeve; 36. Flange edge. Detailed Implementation

[0017] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0018] like Figure 1 - Figure 10The diagram shows a casting mold for producing copper castings, comprising a casting cylinder 1, a sleeve 3 fitted at the front end of the casting cylinder 1, a front cover 2 fixedly connected to the front end of the sleeve 3, a vertical moving cavity 4 formed at the edge of the front surface of the front cover 2, a vertical moving strip 5 slidably inserted into the inner side of the vertical moving cavity 4, a horizontal cavity 7 formed inside the casting cylinder 1, a horizontal strip 8 slidably inserted into the inner side of the horizontal cavity 7 via a reset mechanism, an insert block 6 fixedly connected to the rear end of the lower surface of the vertical moving strip 5, the insert block 6 fitting into the upper surface of the horizontal strip 8, a connecting plate 11 fixedly connected to the rear end of the horizontal strip 8, and a rear plate 12 slidably inserted into the rear end of the inner side of the casting cylinder 1. The lower end of the connecting plate 11 is fixedly connected to the outer surface of the rear plate 12. The front surface edge of the front cover 2 is fixedly connected to the fixing seat 16. The front end of the horizontal bar 8 slides through the fixing seat 16 and is fixedly connected to the hanging post 19. The front end of the fixing seat 16 is fixedly provided with the connecting seat 17. A locking elastic mechanism is provided between the connecting seat 17 and the hanging post 19. The sleeve 3 has a wide annular groove 28 inside. The wide annular groove 28 is connected to the interior of the vertical moving cavity 4. A ring 29 is slidably inserted into the inner side of the wide annular groove 28. The inner bottom edge of the ring 29 is provided with a protruding arc edge 30. The upper end of the protruding arc edge 30 forms a smooth continuous curved surface with the inner wall of the sleeve 3. By inserting the traction hook 34 under the hanging post 19 and pulling it forward, the horizontal bar 8 and the rear plate 12 can be driven to move forward synchronously. Pull the traction hook 34 upwards, and the traction hook 34 will drive the hanging column 19 to move upwards. The insert block 6 will move upwards synchronously with the vertical moving bar 5 and disengage from the horizontal bar 8.

[0019] A front flange 33 is fixedly connected to the front end of the outer surface of the casting cylinder 1. The front flange 33 is fixedly connected to the rear end of the sleeve 3 using common bolt installation, which facilitates the separation of the front flange 33 from the sleeve 3 during demolding to remove the front cover 2. A rear flange 31 is fixedly connected to the rear end of the outer surface of the casting cylinder 1, and the rear end of the rear flange 31 is fixedly connected to the drive disc 32. The rear surface of the drive disc 32 is coaxially fixedly connected to the power output shaft and is used to drive the casting cylinder 1 to rotate for centrifugal casting. The drive disc 32 is generally not disassembled or reassembled routinely. It is only necessary to disassemble and separate the drive disc 32 during major equipment overhauls, when the power output shaft or drive disc 32 is worn or damaged, or when the casting cylinder 1 assembly is replaced.

[0020] The reset mechanism includes a connecting plate 11 fixedly connected to the rear end of the horizontal bar 8. A movable opening 10 is provided at the rear end of the inner wall of the casting cylinder 1. The lower end of the connecting plate 11 slides through the inner side of the movable opening 10. A movable cavity 13 is provided above the rear end of the horizontal cavity 7. The upper end of the connecting plate 11 slides through the inner side of the movable cavity 13. A reset T-post 14 is fixedly connected to the upper end of the front surface of the connecting plate 11. A reset spring 15 is sleeved on the outer surface of the reset T-post 14, and the reset spring 15 is located inside the movable cavity 13. The reset T-post 14 slides through the front surface of the movable cavity 13. The front end of the reset spring 15 abuts against the front wall of the movable cavity 13, and the rear end abuts against the connecting plate 11. The spring force of the reset spring 15 continuously pushes the connecting plate 11 backward, and the spring force can automatically drive the horizontal bar 8 to return to its original position. The movable cavity 13 and the movable opening 10 form two sliding limits on the connecting plate 11, ensuring that the reset action is linear and smooth and avoiding jamming or deviation.

[0021] A slot 9 is provided at the front end of the inner top face of the horizontal cavity 7. The insert 6 slides through the inner side of the slot 9, and the design of the slot 9 is to reserve sliding space for the insert 6.

[0022] The locking elastic mechanism includes a vertical slider 20 fixedly connected to the front end of the hanging column 19. The vertical slider 20 slides into the inner side of the connecting seat 17. A vertical T-post 21 is fixedly connected to the upper surface of the vertical slider 20. The upper end of the vertical T-post 21 slides through the inner top surface of the connecting seat 17. A compression spring 22 is sleeved on the outer surface of the vertical T-post 21. The compression spring 22 is located inside the connecting seat 17. A limiting plate 23 is connected to the rear of the upper surface of the connecting seat 17 through a pushing mechanism. When the limiting plate 23 moves forward, it blocks the upper end of the vertical T-post 21 to limit its upward movement. Under normal conditions, the compression spring 22 presses the vertical slider 20 to tighten it. After the limiting plate 23 moves backward to release the obstruction, the vertical T-post 21 can be lifted upward to unlock, making it less prone to jamming and failure.

[0023] The jacking mechanism includes guide bars 27 fixedly connected to the two corners at the front of the limiting plate 23. Guide cylinders 25 are slidably fitted onto the front ends of the two guide bars 27, and the guide cylinders 25 are fixedly connected to the upper surface of the connecting seat 17. A jacking spring 26 is provided inside the connecting seat 17, and the front and rear ends of the jacking spring 26 are fixedly connected to the front inner wall of the connecting seat 17 and the front end face of the guide bar 27, respectively. The two sets of guide bars 27 and guide cylinders 25 form a symmetrical sliding guide structure, ensuring that the limiting plate 23 does not tilt during translation. The jacking spring 26 continuously pushes the guide bars 27 backward under normal conditions, keeping the limiting plate 23 in a state where it does not obstruct the upper surface of the vertical T-post 21.

[0024] The rear of the limiting plate 23 has a V-shaped opening 24. The V-shaped design facilitates the pushing of the upper end of the traction hook 34, and the upper end of the traction hook 34 is less likely to shift to the sides during the pushing process.

[0025] A vertical sliding opening 18 is provided through the rear surface of the fixed base 16. The vertical sliding opening 18 is connected to the front end of the vertical moving cavity 4. The front end of the vertical moving bar 5 is slidably inserted into the inner side of the vertical sliding opening 18. The vertical sliding opening 18 further provides a lateral limiting function for the vertical moving bar 5, restricting the vertical moving bar 5 to slide vertically up and down along the vertical moving cavity 4, thereby improving the stability of the movement of the vertical moving bar 5.

[0026] The operator passes the traction hook 34 under the hanging post 19 and pulls it forward. The traction hook 34 is tilted, with its upper end relatively forward, pushing the limiting plate 23 forward. This causes the limiting plate 23 to move forward, which in turn moves the guide bar 27 forward and pushes against the spring 26. After the limiting plate 23 moves forward, it covers the upper surface of the vertical T-post 21, thus limiting the vertical T-post 21. At this time, the upward force generated by the lower end of the traction hook 34 pushing against the hanging post 19 cannot drive the hanging post 19 to move upward.

[0027] When the traction hook 34 is pulled forward, the front cover 2 and the sleeve 3 move forward simultaneously. Because the insert block 6 and the horizontal bar 8 are inserted and engaged, the forward movement of the sleeve 3 can drive the horizontal bar 8 to move synchronously. The horizontal bar 8 drives the rear plate 12 to slide forward through the connecting plate 11. The rear plate 12 pushes the rear end of the inner forming tube sleeve 35 forward. The front cover 2 and the forming tube sleeve 35 move forward synchronously, realizing the ejection of the forming tube sleeve 35 and simplifying the workpiece removal process.

[0028] Pull the traction hook 34 forward until the front surface of the connecting plate 11 is against the inner front wall of the moving port 10, the front surface of the insert 6 is against the inner front wall of the slot 9, and the front end of the horizontal bar 8 is against the inner front wall of the horizontal cavity 7. The traction hook 34 reaches its forward travel limit and can no longer move the front cover 2 forward. Then pull the traction hook 34 upward. The upper end of the traction hook 34 is released from the push of the limiting plate 23. Under the elastic force of the push spring 26, the limiting plate 23 can move backward and reset, no longer blocking the upper end surface of the vertical T-post 21. Therefore, the hanging post 19 moves upward synchronously with the traction hook 34, and the vertical moving bar 5 is lifted synchronously, so that the insert 6 and the horizontal bar 8 separate from each other. Under the elastic force of the reset spring 15, the horizontal bar 8 resets backward, and the rear plate 12 disengages from the rear end of the molded tube sleeve 35. During the upward movement of the vertical moving bar 5, the ring 29 slides upward along the inner side of the wide annular groove 28, and the upper end of the protruding arc edge 30 extends out of the inner wall of the sleeve 3 and reaches behind the flange edge 36. After pulling the traction hook 34 upward, the traction hook 34 is pulled forward again, and the traction hook 34 pushes the limiting plate 23 forward. The front end of the limiting plate 23 moves to below the large diameter head of the upper end of the vertical T column 21 and continues to pull forward. The protruding arc edge 30 drags the flange edge 36 forward in sync, pulling the formed tube sleeve 35 out of the inside of the casting cylinder 1.

[0029] Finally, the operator removes the traction hook 34, the vertical moving bar 5 moves downwards to reset, and the protruding arc edge 30 retracts to its original position, allowing the flange edge 36 to be removed from the sleeve 3. The entire unloading operation is simple and requires no additional fixing fixtures.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A casting mold for producing a copper casting, comprising a mold cylinder (1), characterized in that: A sleeve (3) is fitted at the front end of the casting cylinder (1). A front cover (2) is fixedly connected to the front end of the sleeve (3). A vertical moving cavity (4) is opened at the edge of the front surface of the front cover (2). A vertical moving strip (5) is slidably inserted into the inner side of the vertical moving cavity (4). A horizontal cavity (7) is opened inside the casting cylinder (1). A horizontal strip (8) is slidably inserted into the inner side of the horizontal cavity (7) through a reset mechanism. An insert block (6) is fixedly connected to the rear end of the lower surface of the vertical moving strip (5). The insert block (6) is inserted into the upper surface of the horizontal strip (8). A connecting plate (11) is fixedly connected to the rear end of the horizontal strip (8). A rear plate (12) is slidably inserted into the rear end of the inner side of the casting cylinder (1). The lower end of the connecting plate (11) is connected to the rear plate (12). The outer surface of the plate (12) is fixedly connected, and the front edge of the front surface of the front cover (2) is fixedly connected to the fixed seat (16). The front end of the horizontal bar (8) slides through the fixed seat (16) and is fixedly connected to the hanging post (19). The front end of the fixed seat (16) is fixedly provided with the connecting seat (17). A locking elastic mechanism is provided between the connecting seat (17) and the hanging post (19). The sleeve (3) has a wide annular groove (28) inside. The wide annular groove (28) is connected to the interior of the vertical moving cavity (4). A ring (29) is slidably inserted into the inner side of the wide annular groove (28). The inner bottom edge of the ring (29) is provided with a protruding arc edge (30). The upper end of the protruding arc edge (30) forms a smooth continuous curved surface with the inner wall of the sleeve (3). By inserting the towing hook (34) under the hanging post (19) and pulling it forward, the horizontal bar (8) and the rear plate (12) can be driven to move forward synchronously. Pull the traction hook (34) upwards. The traction hook (34) drives the hanging column (19) to move upwards. The insert (6) moves upwards synchronously with the vertical moving bar (5) and separates from the horizontal bar (8).

2. The casting mold for producing copper castings according to claim 1, characterized in that: The front end of the outer surface of the casting cylinder (1) is fixedly connected to a front flange (33), the front flange (33) is fixedly connected to the rear end of the sleeve (3), and the rear end of the outer surface of the casting cylinder (1) is fixedly connected to a rear flange (31), the rear end of the rear flange (31) is fixedly connected to a drive disc (32).

3. The casting mold for producing copper castings according to claim 1, characterized in that: The reset mechanism includes a connecting plate (11) fixedly connected to the rear end of the horizontal bar (8). The inner wall of the casting cylinder (1) has a movable opening (10) at the rear end. The lower end of the connecting plate (11) slides through the inner side of the movable opening (10). A movable cavity (13) is provided above the rear end of the horizontal cavity (7). The upper end of the connecting plate (11) slides through the inner side of the movable cavity (13). A reset T-post (14) is fixedly connected to the upper end of the front surface of the connecting plate (11). A reset spring (15) is sleeved on the outer surface of the reset T-post (14), and the reset spring (15) is located inside the movable cavity (13). The reset T-post (14) slides through the front surface of the movable cavity (13).

4. A casting mold for producing copper castings according to claim 1, characterized in that: A slot (9) is provided at the front end of the inner top face of the horizontal cavity (7), and the insert (6) slides through the inner side of the slot (9).

5. A casting mold for producing copper castings according to claim 1, characterized in that: The locking elastic mechanism includes a vertical slider (20) fixedly connected to the front end of the hanging column (19). The vertical slider (20) slides into the inner side of the connecting seat (17). A vertical T-post (21) is fixedly connected to the upper surface of the vertical slider (20). The upper end of the vertical T-post (21) slides through the inner top surface of the connecting seat (17). A compression spring (22) is sleeved on the outer surface of the vertical T-post (21). The compression spring (22) is located inside the connecting seat (17). A limiting plate (23) is connected to the rear side of the upper surface of the connecting seat (17) through a pushing mechanism. When the limiting plate (23) moves forward, it blocks the upper end of the vertical T-post (21) to limit its upward movement.

6. A casting mold for producing copper castings according to claim 5, characterized in that: The jacking mechanism includes guide bars (27) fixedly connected to the two corners at the front of the limiting plate (23). The front ends of the two guide bars (27) are respectively slidably fitted with guide cylinders (25). The guide cylinders (25) are fixedly connected to the upper surface of the connecting seat (17). The inner side of the connecting seat (17) is provided with a jacking spring (26). The front and rear ends of the jacking spring (26) are respectively fixedly connected to the front inner wall of the connecting seat (17) and the front end face of the guide bar (27).

7. A casting mold for producing copper castings according to claim 5, characterized in that: The limiting plate (23) has a V-shaped opening (24) at the rear.

8. A casting mold for producing copper castings according to claim 1, characterized in that: The rear surface of the fixed base (16) is provided with a vertical sliding opening (18), which is connected to the front end of the vertical moving cavity (4). The front end of the vertical moving bar (5) is slidably inserted into the inside of the vertical sliding opening (18).

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