Drawing rod closing device of horizontal extrusion casting machine

Abstract

According to the drawing rod closing device of the horizontal extrusion casting machine, the horizontal extrusion casting machine comprises a tail plate, a drawing rod is installed on the tail plate, the drawing rod closing device comprises a fixing base fixed to the tail plate and enclasping assemblies installed on the two sides of the fixing base respectively, each enclasping assembly comprises a movable cylinder body and a piston rod, and the piston rod is sleeved with the movable cylinder body; movable cavities are formed in the two sides of the fixed base respectively, the movable cylinder bodies are movably arranged on the movable cavities, the piston rods are fixed to the fixed base, a holding part is arranged at one end of each movable cylinder body, and the movable cylinder bodies hold the drawing rod through the holding parts when moving in the first direction. The holding assemblies are arranged on the two sides of the fixing base and comprise the movable cylinder bodies and the piston rods, the movable cylinder bodies are movably arranged on the movable cavities, the piston rods are fixed to the fixing base, the drawing rod is held or loosened through movement of the movable cylinder bodies, only the movable cylinder bodies move in the whole action process, and the piston rods are still fixed all the time. Therefore, the action structure is simple, and the stability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of squeeze casting machines, and particularly relates to a drawbar closing device for a horizontal squeeze casting machine. Background Art

[0002] Chinese Patent Document No. CN217474829U disclosed a draw guide post fixing device for squeeze casting and its squeeze casting machine on September 23, 2022, which includes a draw guide post oil cylinder, a guide post, a fixed template and a U-shaped support base. The notch of the U-shaped support base faces outward and the bottom surface is closely attached to the outer side wall of the fixed template. The draw guide post oil cylinder drives the guide post sleeve to be connected to the fixed template and the U-shaped support base; a pair of closing rear nuts and closing front nuts that are threadedly locked to the outer thread of the end of the guide post after closing are slidably installed back and forth in the notch of the U-shaped support base; a pressing plate is also connected to the outside of the notch of the U-shaped support base, and a positioning screw rod that contacts the end face of the top of the guide post is threadedly connected to the pressing plate in the axial direction of the guide post. The positioning position of the guide post is adjusted axially by the positioning screw rod to realize the threaded fit between the outer thread of the end of the guide post and the internal threads of the closed closing rear nut and closing front nut. This draw guide post fixing device drives the closing rear nut through the piston rod of the opening and closing oil cylinder to realize the opening and closing of the closing rear nut and the closing front nut, and realizes holding or loosening the guide post. Specifically, the piston rod of the oil cylinder first drives the closing rear nut to move. After the closing rear nut moves a certain distance, it is restricted by the support base or the guide post and cannot move. Then, under the action of the reaction force, the cylinder body of the draw guide post oil cylinder drives the closing front nut to move, thereby realizing the opening and closing of the closing rear nut and the closing front nut. In the above process, both the cylinder body and the piston rod of the draw guide post oil cylinder need to move, the action structure is complex, the stability is poor, and it is easy to fail.

[0003] Therefore, it is necessary to make further improvements. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a drawbar closing device for a horizontal squeeze casting machine with simple structure, stable and reliable, simple action, low failure rate and strong practicability, so as to overcome the deficiencies of the prior art.

[0005] A drawbar closing device for a horizontal squeeze casting machine designed according to this purpose, the horizontal squeeze casting machine includes a tail plate, and a drawbar is installed on the tail plate. It is characterized in that: the drawbar closing device includes a fixed seat fixed on the tail plate and clamping components respectively installed on both sides of the fixed seat. The clamping components include a movable cylinder body and a piston rod. The movable cylinder body is sleeved on the outer periphery of the piston rod. Activity cavities are respectively arranged on both sides of the fixed seat, the movable cylinder body is movably arranged on the activity cavities, the piston rod is fixed on the fixed seat, a clamping part is arranged at one end of the movable cylinder body, and when the movable cylinder body moves in the first direction, the drawbar is clamped through the clamping part.

[0006] A guide rod is provided at the other end of the movable cylinder block, a guide hole is provided on the fixed seat, the guide rod passes through the guide hole, and the movable cylinder block is movably arranged on the movable cavity through the cooperation of the guide rod and the guide hole.

[0007] A limit cover is provided at the other end of the movable cylinder block, a piston is provided at one end of the piston rod, a limiting surface is provided on one side of the movable cavity. When the movable cylinder block moves in the first direction, it is limited to the piston through the limit cover. When the movable cylinder block moves in the second direction, it is limited to the limiting surface through the limit cover.

[0008] A movable hole is provided on the movable cylinder block. When the movable cylinder block moves on the movable cavity, the piston moves relatively on the movable hole.

[0009] One end of the piston rod is located on the movable cavity and the other end extends outside the fixed seat. The other end of the piston rod is locked and fixed to the fixed seat through a fastener.

[0010] The clamping part is integrally or separately provided at one end of the movable cylinder block, and an arc acting surface for clamping and acting on the draw rod is provided on the clamping part.

[0011] A clearance hole is provided on the fixed seat. One end of the draw rod passes through the clearance hole. The movable cavity is communicated with the clearance hole. When the movable cylinder block moves in the first direction, the clamping part moves to the clearance hole.

[0012] An oil inlet hole communicating with the movable cavity is provided on one side of the fixed seat. An oil inlet channel and an oil guide hole are provided on one side of the movable cylinder block. A lubrication channel is provided inside the movable cylinder block. An oil outlet hole is provided on the clamping part. The oil inlet hole, the oil inlet channel, the oil guide hole, the lubrication channel, the oil outlet hole and the clearance hole are communicated in sequence.

[0013] The fixed seat includes a seat body, a sealing plate and a cover plate. A first opening is provided on one side of the seat body. The sealing plate covers the first opening to form a fixed seat body. An movable cavity is formed between the seat body and the sealing plate. Second openings communicating with the movable cavity are respectively provided on both sides of the fixed seat body. The cover plate covers the second openings. The clearance hole is provided in the middle of the fixed seat body and is located between the two movable cavities.

[0014] A acting part is sleeved on one end of the draw rod. When the movable cylinder block moves in the first direction, the clamping part clamps and acts on the acting part.

[0015] In the utility model, by providing clamping assemblies on both sides of the fixed seat, the clamping assemblies include a movable cylinder block and a piston rod. The movable cylinder block is movably arranged on the movable cavity, and the piston rod is fixed on the fixed seat. By the movement of the movable cylinder block, the draw rod is clamped or loosened. During the whole movement process, only the movable cylinder block moves, while the piston rod remains stationary all the time. Therefore, the movement structure is relatively simple and has high stability, which can greatly reduce the failure rate of the movement of components, thereby reducing the maintenance and repair of the equipment and improving the service life of the equipment. Description of the Drawings

[0016] Figure 1 This is a cross-sectional view of the draw rod closing device in an embodiment of the present utility model.

[0017] Figure 2 It is Figure 1 a schematic enlarged structure view of the position C in

[0018] Figure 3 This is a cross-sectional view of the draw rod closing device in another orientation in an embodiment of the present utility model.

[0019] Figure 4 It is Figure 3 a schematic enlarged structure view of the position D in

[0020] Figure 5 This is a schematic overall structure view of the draw rod closing device in an embodiment of the present utility model.

[0021] Figure 6 This is a schematic exploded structure view of the draw rod closing device in an embodiment of the present utility model.

[0022] Figure 7 This is a schematic overall structure view of the fixed seat body in an embodiment of the present utility model.

[0023] Figure 8 This is a schematic overall structure view of the clamping assembly in an embodiment of the present utility model.

[0024] Figure 9 This is a schematic exploded structure view of the clamping assembly in an embodiment of the present utility model.

[0025] Figure 10 This is a schematic partial structure view of the squeeze casting machine in an embodiment of the present utility model. Detailed implementation manners

[0026] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0027] Refer to Figures 1-10, The drawbar closing device of this horizontal squeeze casting machine. The horizontal squeeze casting machine includes a tail plate 1, on which a drawbar 6 is installed. The drawbar closing device includes a fixed seat 2 fixed on the tail plate 1 and clamping components 3 respectively installed on both sides of the fixed seat 2. The clamping component 3 includes a movable cylinder block 4 and a piston rod 5. The movable cylinder block 4 is sleeved on the outer periphery of the piston rod 5. On both sides of the fixed seat 2, movable cavities 7 are respectively provided. The movable cylinder block 4 is movably arranged on the movable cavity 7. The piston rod 5 is fixed on the fixed seat 2. One end of the movable cylinder block 4 is provided with a clamping part 8. When the movable cylinder block 4 moves in the first direction A, the drawbar 6 is clamped by the clamping part 8, that is, the two clamping parts 8 clamp the drawbar 6; when the movable cylinder block 4 moves in the second direction B, the clamping part 8 releases the drawbar 6. At this time, the drawbar 6 can be withdrawn by the draw guide column oil cylinder, which is convenient for the installation of the mold. For the specific principle, reference can be made to Patent CN217474829U.

[0028] The other end of the movable cylinder block 4 is provided with a guide rod 9. On the fixed seat 2, a guide hole 10 is provided. The guide rod 9 passes through the guide hole 10. The movable cylinder block 4 is movably arranged on the movable cavity 7 through the cooperation of the guide rod 9 and the guide hole 10, preventing the movable cylinder block 4 from shifting when moving and improving the movement stability of the movable cylinder block 4.

[0029] The other end of the movable cylinder block 4 is provided with a limit cover 11. One end of the piston rod 5 is provided with a piston 12. On one side of the movable cavity 7, a limit surface 13 is provided. When the movable cylinder block 4 moves in the first direction A, it is limited on the piston 12 by the limit cover 11. When the movable cylinder block 4 moves in the second direction B, it is limited on the limit surface 13 by the limit cover 11; the guide rod 9 is fixed on the limit cover 11.

[0030] The movable cylinder block 4 is provided with a movable hole 14. When the movable cylinder block 4 moves on the movable cavity 7, the piston 12 moves relatively in the movable hole 14.

[0031] One end of the piston rod 5 is located on the movable cavity 7 and the other end extends outside the fixed seat 2. The other end of the piston rod 5 is locked and fixed on the fixed seat 2 through a fastener 15. The fastener 15 is a locking nut.

[0032] The clamping part 8 is integrally or separately arranged at one end of the movable cylinder block 4. The clamping part 8 is provided with an arc-shaped acting surface 16 for clamping and acting on the drawbar 6. When the movable cylinder block 4 moves in the first direction A, the arc-shaped acting surface 16 clamps and acts on the acting part 29, and then clamps the drawbar 6. The arc-shaped acting surface 16 matches the circular surface of the acting part 29 to improve the clamping effect; in this embodiment, the clamping part 8 is integrally arranged at one end of the movable cylinder block 4.

[0033] A clearance hole 17 is provided in the middle of the fixed seat 2. One end of the draw rod 6 passes through the clearance hole 17, and the movable cavity 7 communicates with the clearance hole 17. When the movable cylinder block 4 moves in the first direction A, the clamping part 8 moves to the clearance hole 17 so that the clamping part 8 can clamp the draw rod 6. The above structure makes the structure of the draw rod closing device more compact and reduces the occupied space of the draw rod closing device.

[0034] An oil inlet hole 18 communicating with the movable cavity 7 is provided on one side of the fixed seat 2. An oil inlet channel 19 and an oil guide hole 20 are provided on one side of the movable cylinder block 4. A lubricating channel 21 is provided in the movable cylinder block 4. An oil outlet hole 22 is provided on the clamping part 8. The oil inlet hole 18, the oil inlet channel 19, the oil guide hole 20, the lubricating channel 21, the oil outlet hole 22 and the clearance hole 17 are communicated in sequence. Lubricating oil is delivered to the movable cylinder block 4, the draw rod 6 and the acting part 29 through the above oil circuit, so that the above components can be lubricated, the movement of the above components is smoother, and the service life of the above components is improved.

[0035] The fixed seat 2 includes a seat body 23, a sealing plate 24 and a cover plate 25. A first opening 26 is provided on one side of the seat body 23. The sealing plate 24 covers the first opening 26 to form a fixed seat body 27. A movable cavity 7 is formed between the seat body 23 and the sealing plate 24. Second openings 28 communicating with the movable cavity 7 are provided on both sides of the fixed seat body 27. The cover plate 25 covers the second openings 28. The limiting surface 13 is arranged on the inner side of the cover plate 25. The clearance hole 17 is arranged in the middle of the fixed seat body 27 and is located between the two movable cavities 7. The sealing plate 24 and the cover plate 25 are respectively fixed on the seat body 23 by screws, so that the fixed seat 2 can be conveniently disassembled, and thus it is convenient to maintain or replace the clamping assembly 3.

[0036] A acting part 29 is sleeved on one end of the draw rod 6. When the movable cylinder block 4 moves in the first direction A, the clamping part 8 clamps and acts on the acting part 29, and thus clamps the draw rod 6. The acting part 29 is an adjusting nut, and the acting part 29 is in threaded fit connection with the draw rod 6.

[0037] The horizontal squeeze casting machine further includes a head plate 30 and a middle plate 31. The other end of the draw rod 6 is installed on the head plate 30. The draw rod 6 passes through the middle plate 31, and the middle plate 31 is movably arranged on the head plate 30 and the tail plate 1 along the draw rod 6.

[0038] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A drawbar closing device for a horizontal squeeze casting machine, the horizontal squeeze casting machine comprising a tail plate (1), and a drawbar (6) is installed on the tail plate (1), characterized in that: The draw rod closing device includes a fixed seat (2) fixed on the tail plate (1) and clamping components (3) respectively installed on both sides of the fixed seat (2). The clamping component (3) includes a movable cylinder body (4) and a piston rod (5). The movable cylinder body (4) is sleeved on the outer periphery of the piston rod (5). Activity cavities (7) are respectively arranged on both sides of the fixed seat (2). The movable cylinder body (4) is movably arranged on the activity cavity (7). The piston rod (5) is fixed on the fixed seat (2). A clamping part (8) is arranged at one end of the movable cylinder body (4). When the movable cylinder body (4) moves in the first direction (A), the draw rod (6) is clamped through the clamping part (8).

2. The drawbar closing device of the horizontal squeeze casting machine according to claim 1, characterized in that: A guide rod (9) is arranged at the other end of the movable cylinder body (4). A guide hole (10) is arranged on the fixed seat (2). The guide rod (9) passes through the guide hole (10). The movable cylinder body (4) is movably arranged on the activity cavity (7) through the cooperation of the guide rod (9) and the guide hole (10).

3. The drawbar closing device of the horizontal squeeze casting machine according to claim 2, characterized in that: A limit cover (11) is arranged at the other end of the movable cylinder body (4). A piston (12) is arranged at one end of the piston rod (5). A limiting surface (13) is arranged on one side of the activity cavity (7). When the movable cylinder body (4) moves in the first direction (A), it is limited on the piston (12) through the limit cover (11). When the movable cylinder body (4) moves in the second direction (B), it is limited on the limiting surface (13) through the limit cover (11).

4. The drawbar closing device of the horizontal squeeze casting machine according to claim 3, characterized in that: An activity hole (14) is arranged on the movable cylinder body (4). When the movable cylinder body (4) moves on the activity cavity (7), the piston (12) moves relatively in the activity hole (14).

5. The drawbar closing device of the horizontal squeeze casting machine according to claim 3, characterized in that: One end of the piston rod (5) is located on the activity cavity (7), and the other end extends outside the fixed seat (2). The other end of the piston rod (5) is locked and fixed on the fixed seat (2) through a fastener (15).

6. The drawbar closing device of the horizontal squeeze casting machine according to claim 1, characterized in that: The clamping part (8) is integrally or separately arranged at one end of the movable cylinder body (4). An arc acting surface (16) for clamping and acting on the draw rod (6) is arranged on the clamping part (8).

7. The drawbar closing device of the horizontal squeeze casting machine according to claim 1, characterized in that: An avoidance hole (17) is arranged on the fixed seat (2). One end of the draw rod (6) passes through the avoidance hole (17). The activity cavity (7) communicates with the avoidance hole (17). When the movable cylinder body (4) moves in the first direction (A), the clamping part (8) moves to the avoidance hole (17).

8. The drawbar closing device of the horizontal squeeze casting machine according to claim 7, characterized in that: An oil inlet hole (18) communicating with the activity cavity (7) is arranged on one side of the fixed seat (2). An oil inlet channel (19) and an oil guide hole (20) are arranged on one side of the movable cylinder body (4). A lubrication channel (21) is arranged in the movable cylinder body (4). An oil outlet hole (22) is arranged on the clamping part (8). The oil inlet hole (18), the oil inlet channel (19), the oil guide hole (20), the lubrication channel (21), the oil outlet hole (22) and the avoidance hole (17) are communicated in sequence.

9. The drawbar closing device of the horizontal squeeze casting machine according to claim 7, characterized in that: The fixed seat (2) includes a seat body (23), a sealing plate (24) and a cover plate (25). A first opening (26) is provided on one side of the seat body (23). The sealing plate (24) covers the first opening (26) to form a fixed seat body (27). An activity cavity (7) is formed between the seat body (23) and the sealing plate (24). Second openings (28) communicating with the activity cavity (7) are respectively provided on both sides of the fixed seat body (27). The cover plate (25) covers the second openings (28). The clearance hole (17) is provided in the middle of the fixed seat body (27) and located between the two activity cavities (7).

10. The drawbar closing device of the horizontal squeeze casting machine according to any one of claims 1-9, characterized in that: A working part (29) is sleeved on one end of the extraction rod (6). When the movable cylinder body (4) moves in the first direction (A), the clamping part (8) clamps and acts on the working part (29).

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