High-rigidity hydraulic machine body structure with pre-tightening adjustable guide rail

Abstract

The application relates to the technical field of hydraulic machine bodies, and discloses a high-rigidity hydraulic machine body structure with a pre-tightening adjustable guide rail, which comprises a machine body shell, the bottom of the machine body shell is communicated with a hydraulic chamber, the outside of the hydraulic chamber is fixedly connected with mounting bolts, the outside of the mounting bolts is threadedly connected with mounting nuts, the outside of the hydraulic chamber is slidably connected with a lower cross beam, and the mounting nuts abut against the two sides of the lower cross beam. The machine body is provided with a guide column structure, the guide column slides in the main guide rail pair, cooperates with the main guide rail and the tension spring, the main guide rail pair is installed by using the lower cross beam, the stability is improved, the pre-stress pull rod and the push rod are synchronously moved after cooperating with the fixing member, the rigidity of the machine body is improved, the bending and torsional rigidity of the hydraulic machine body structure is remarkably improved, the heavy-load deformation phenomenon is reduced, and the problems that the rigidity of the traditional hydraulic machine is poor and the high-end manufacturing cannot meet the requirements of forming precision, structural strength and production continuity are solved.

Description

Technical Field

[0001] This invention relates to the field of hydraulic press body technology, specifically to a high-rigidity hydraulic press body structure with a pre-tensioned adjustable guide rail. Background Technology

[0002] As the skeleton and load-bearing foundation of the entire equipment, the hydraulic press body is the core structural component that determines the overall performance of the equipment. Its design and manufacturing quality are directly related to the rigidity, precision, stability and service life of the equipment. Reasonable design of the body structure, optimization of the stiffener layout, use of high-strength materials and advanced welding or casting processes are the key technical paths to improve the overall performance of the hydraulic press and meet the requirements of high precision, high efficiency and long service life forming processes.

[0003] Existing high-rigidity hydraulic presses typically have an integral frame structure made of Q345 steel plate welded together. After welding, the frame undergoes annealing to fully eliminate welding deformation and internal stress, ensuring that the welded parts remain undeformed over time. The guide rail reference surface is determined through machining, and four corners and eight sides of adjustable guide rails are arranged inside the frame to guide the slider, ensuring the consistency of equipment accuracy and workpiece wall thickness.

[0004] The inventors of this application discovered in their research that the core defect of the aforementioned prior art is that: the body of traditional hydraulic presses mostly adopts ordinary welded frames, cast bodies or non-pre-tightened combined structures. Under the action of heavy tonnage pressing and eccentric loads, the upper crossbeam, column and lower crossbeam are prone to elastic deformation or even partial separation, resulting in insufficient rigidity of the whole machine and poor force transmission, which directly affects the forming accuracy of the workpiece and the life of the mold. Summary of the Invention

[0005] This invention provides a high-rigidity hydraulic press body structure with pre-tensioned adjustable guide rails, which solves the problem of poor rigidity in hydraulic presses and achieves the effect of increasing the operating rigidity of hydraulic presses.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-rigidity hydraulic press body structure with pre-tensioned adjustable guide rails, comprising a body shell, a hydraulic chamber connected to the bottom of the body shell, mounting bolts fixedly connected to the outside of the hydraulic chamber, mounting nuts threaded onto the outside of the mounting bolts, a lower crossbeam slidably connected to the outside of the hydraulic chamber, mounting nuts abutting against both sides of the lower crossbeam, main guide rail pairs fixedly connected to both sides of the lower crossbeam, main guide rods fixedly connected inside the main guide rail pairs, guide columns slidably connected to the outside of the main guide rods, guide columns slidably connected to the main guide rail pairs, a tension spring fixedly connected to the top of the guide columns through the inside of the main guide rail pairs, a prestressed tie rod fixedly connected to the bottom of the guide columns, an auxiliary block fixedly connected to the outside of the prestressed tie rod, a locking screw fixedly connected to the bottom of the auxiliary block, and a locking nut threaded onto the outside of the locking screw.

[0007] By adopting the above technical solutions, the rigidity of the machine body and the guiding accuracy of the guide rail are improved in a coordinated manner, thereby solving the technical problems of poor rigidity, uncontrollable guide rail clearance, easy instability due to eccentric load, and rapid decrease in accuracy after wear in traditional hydraulic presses.

[0008] Preferably, a pre-tightening adjustable body is fixedly connected to both sides of the lower crossbeam, a hollow rod is fixedly connected inside the pre-tightening adjustable body, an inner slide rod is slidably connected inside the hollow rod, an adjustable slider is fixedly connected to one end of the inner slide rod, the adjustable slider is slidably connected to the pre-tightening adjustable body, a pre-tightening force abutment is fixedly connected to one side of the adjustable slider, and the pre-tightening force abutment abuts against one side of the guide column.

[0009] Preferably, a knob is rotatably connected to one side of the pre-tightening adjustable body, and an adjusting screw is fixedly connected to one side of the knob through the pre-tightening adjustable body. The adjusting screw is rotatably connected inside the pre-tightening adjustable body.

[0010] Preferably, the adjusting screw is externally threaded to a screw slider, and pressing plates are fixedly connected to both sides of the screw slider.

[0011] Preferably, the pressing plate is slidably connected to the outside of the hollow rod, and a compression spring is fixedly connected to one side of the pressing plate. The compression spring is fixedly connected to the adjustable slider.

[0012] Preferably, a wing block is inserted into the outside of the locking screw, and a pre-tightening hole is formed inside the wing block.

[0013] Preferably, a fixing member is fixedly connected between the wing blocks, and the fixing member has an insertion hole inside.

[0014] Preferably, an upper crossbeam is fixedly connected to the outside of the fuselage housing. The upper crossbeam is fixedly connected to the outside of the main guide rail pair. The upper crossbeam is fitted with mounting pins, which are threadedly connected to the fuselage housing.

[0015] Preferably, a normally closed filling valve is installed on the top of the housing, and a normally closed return valve is installed on one side of the housing, the normally closed return valve passing through the upper crossbeam.

[0016] Preferably, a piston is slidably connected inside the hydraulic chamber, and a push rod is fixedly connected to the bottom of the piston. The push rod is slidably connected to the hydraulic chamber and fixedly connected to a fixed component.

[0017] By adopting the above technical solutions, online adjustment of guide rail clearance, pre-tightening loading, and wear compensation can be achieved. The pre-tightening mechanism can apply a constant pre-tightening force to the guide rail during assembly and use, eliminate clearance, improve the smoothness of slider operation and resistance to off-center loads, and match the overall structural rigidity with the guide rail pre-tightening stiffness, so that the machine body can still maintain high-precision guidance under off-center loads and heavy loads.

[0018] This invention provides a high-rigidity hydraulic press body structure with a pre-tensioned adjustable guide rail. It has the following beneficial effects:

[0019] 1. This invention adopts a guide column structure for the machine body, allowing the guide column to slide inside the main guide rail pair. In conjunction with the main guide rail rod and tension spring, and by using the lower crossbeam to install the main guide rail pair, its stability is improved. With the addition of fixed components, the prestressed tie rod and push rod move synchronously, thereby improving the rigidity of the machine body. This significantly improves the bending and torsional rigidity of the hydraulic press body structure, reduces heavy-load deformation, and solves the problem that traditional hydraulic presses have poor rigidity and cannot meet the requirements of high-end manufacturing for forming accuracy, structural strength, and production continuity.

[0020] 2. This invention improves the stability of the guide column's auxiliary push rod during sliding by setting an inner sliding rod that slides inside the hollow rod, thereby driving the adjustable slider and preload block to abut against one side of the guide column. This reduces the swaying of the push rod during movement, increases the accuracy of the push rod during descent, applies a constant preload to the guide rail, eliminates gaps, and improves the smoothness of the guide column's operation and its resistance to eccentric loads. This solves the problem of insufficient push rod accuracy caused by insufficient limit accuracy of the guide column.

[0021] 3. This invention uses a knob to rotate and adjust the screw, which moves the pressing plate and compresses the spring, causing it to push the preload block in the opposite direction. This changes the contact force between the preload block and the guide column, making the guide rail gap adjustable. This allows the preload block to compensate for wear using the spring, and the force of the preload block can be restored by adjusting the compression force of the spring. This solves the problems of rapid decrease in accuracy and inability to adjust the preload block after wear. Attached Figure Description

[0022] Figure 1 This is an overall perspective view of the present invention;

[0023] Figure 2 This is a side view of the present invention;

[0024] Figure 3 This is a schematic diagram of the fuselage housing of the present invention;

[0025] Figure 4 This is a schematic diagram of the lower crossbeam of the present invention;

[0026] Figure 5 This is a cross-sectional view of the hydraulic chamber of the present invention;

[0027] Figure 6 for Figure 4 Enlarged view of point A in the middle;

[0028] Figure 7 for Figure 4 Enlarged view of section B in the middle.

[0029] The components include: 1. fuselage shell; 2. hydraulic chamber; 3. mounting pin; 4. upper crossbeam; 5. normally closed filling valve; 6. normally closed return valve; 7. main guide rail pair; 8. lower crossbeam; 9. mounting bolt; 10. mounting nut; 11. guide column; 12. fixing component; 13. wing block; 14. prestressed tie rod; 15. pre-tightened adjustable main body; 16. push rod; 17. auxiliary block; 18. locking screw; 19. locking nut; 20. piston; 21. main guide rail; 22. tension spring; 23. hollow rod; 24. inner slide rod; 25. compression spring; 26. adjusting screw; 27. knob; 28. screw slider; 29. ​​pressing plate; 30. adjustable slider; 31. pre-tightening force block; 32. insertion hole; 33. pre-tightening hole. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see the appendix Figure 1 -Appendix Figure 7 This invention provides a high-rigidity hydraulic press body structure with pre-tensioned adjustable guide rails, including a body shell 1. A hydraulic chamber 2 is connected to the bottom of the body shell 1. Mounting bolts 9 are fixedly connected to the outside of the hydraulic chamber 2. Mounting nuts 10 are threadedly connected to the outside of the mounting bolts 9. A lower crossbeam 8 is slidably connected to the outside of the hydraulic chamber 2. Mounting nuts 10 abut against both sides of the lower crossbeam 8. A main guide rail pair 7 is fixedly connected to both sides of the lower crossbeam 8. A main guide rod 21 is fixedly connected inside the main guide rail pair 7. A guide column 11 is slidably connected to the outside of the main guide rod 21. The guide column 11 is slidably connected to the main guide rail pair 7. A tension spring 22 is fixedly connected to the top of the guide column 11 through the inside of the main guide rail pair 7. A prestressed tie rod 14 is fixedly connected to the bottom of the guide column 11. An auxiliary block 17 is fixedly connected to the outside of the prestressed tie rod 14. A locking screw 18 is fixedly connected to the bottom of the auxiliary block 17. A locking nut 19 is threadedly connected to the outside of the locking screw 18.

[0032] Specifically, the guide column 11 is guided and slid by the main guide rail pair 7, and the guide column 11 is limited and guided by the main guide rail rod 21 set inside it, which ensures the movement stability of the guide column 11 and improves the guiding accuracy of the guide column 11. In addition, a tension spring 22 is set to assist the guide column 11 in quick reset. The movement of the guide column 11 synchronously drives the prestressed tie rod 14, so that the prestressed tie rod 14 is fixedly connected to the hydraulic press body, thereby assisting the operation of the hydraulic press body.

[0033] The lower crossbeam 8 can be slidably connected to the outside of the hydraulic chamber 2, and the mounting bolt 9 is provided to pass through the lower crossbeam 8. After the mounting nut 10 is threaded and fixed to the outside of the mounting bolt 9, the lower crossbeam 8 is connected to the hydraulic chamber 2.

[0034] Please see the appendix Figure 4 and attached Figure 6 The lower crossbeam 8 is fixedly connected to both sides of a pre-tightening adjustable body 15. A hollow rod 23 is fixedly connected inside the pre-tightening adjustable body 15. An inner slide rod 24 is slidably connected inside the hollow rod 23. An adjustable slider 30 is fixedly connected to one end of the inner slide rod 24. The adjustable slider 30 is slidably connected to the pre-tightening adjustable body 15. A pre-tightening force block 31 is fixedly connected to one side of the adjustable slider 30. The pre-tightening force block 31 abuts against one side of the guide column 11.

[0035] Specifically, the pre-tensioning block 31 abuts against one side of the guide column 11, reducing the guide gap between the guide column 11 and the main guide rail pair 7, increasing the guiding accuracy of the prestressed tie rod 14, and the adjustable slider 30 is guided and slids inside the hollow rod 23 by the inner slide rod 24, thereby assisting in changing the abutting force of the pre-tensioning block 31.

[0036] Please see the appendix Figure 1 , Figure 5 and attached Figure 7 A knob 27 is rotatably connected to one side of the pre-tightening adjustable body 15. An adjusting screw 26 is fixedly connected to one side of the knob 27 through the pre-tightening adjustable body 15. The adjusting screw 26 is rotatably connected inside the pre-tightening adjustable body 15.

[0037] The adjusting screw 26 is externally threaded to a screw slider 28, and pressing plates 29 are fixedly connected to both sides of the screw slider 28;

[0038] The pressing plate 29 is slidably connected to the outside of the hollow rod 23. A compression spring 25 is fixedly connected to one side of the pressing plate 29. The compression spring 25 is fixedly connected to the adjustable slider 30.

[0039] A wing block 13 is inserted into the outside of the locking screw 18, and a pre-tightening hole 33 is opened inside the wing block 13;

[0040] A fixing member 12 is fixedly connected between the wing blocks 13, and the fixing member 12 has a plug hole 32 inside;

[0041] An upper crossbeam 4 is fixedly connected to the outside of the fuselage housing 1. The upper crossbeam 4 is fixedly connected to the outside of the main guide rail pair 7. The upper crossbeam 4 is fitted with mounting pins 3, which are threadedly connected to the fuselage housing 1.

[0042] A normally closed filling valve 5 is installed on the top of the housing 1, and a normally closed return valve 6 is installed on one side of the housing 1. The normally closed return valve 6 passes through the upper crossbeam 4.

[0043] A piston 20 is slidably connected inside the hydraulic chamber 2. A push rod 16 is fixedly connected to the bottom of the piston 20. The push rod 16 is slidably connected to the hydraulic chamber 2 and fixedly connected to the fixed component 12.

[0044] Specifically, rotating the knob 27 causes the adjusting screw 26 to rotate inside the pre-tightening adjustable body 15, and drives the screw slider 28 to slide outside the adjusting screw 26. Simultaneously, it drives the pressing plate 29 to slide to a limit outside the hollow rod 23, thereby adjusting the distance between the adjustable slider 30 and the pressing plate 29, realizing the function of controlling the compression force of the compression spring 25, and then using the compression spring 25 to push the pre-tightening force block 31 in the opposite direction, changing the contact force between the pre-tightening force block 31 and the guide column 11.

[0045] The fixed component 12 and the wing block 13 can be inserted into the outside of the push rod 16 and the locking screw 18 respectively through the insertion hole 32 and the pre-tightening hole 33, and are limited and fixed by the locking nut 19. The upper crossbeam 4 can be fixed to the outside of the fuselage housing 1 by the mounting nail 3, and also serves to install and fix the main guide rail pair 7.

[0046] By setting normally closed filling valve 5 and normally closed return valve 6, their main functions are to supply oil for the main oil cylinder to suck and discharge oil, control the hydraulic pressure of hydraulic chamber 2, realize the effect of pushing piston 20 and push rod 16, and use fixed component 12 and guide column 11 for guidance.

[0047] Work process: The fixed component 12 and the wing block 13 can be inserted into the outside of the push rod 16 and the locking screw 18 respectively through the insertion hole 32 and the pre-tightening hole 33, and are fixed by the locking nut 19. The upper crossbeam 4 can be fixed to the outside of the fuselage shell 1 by the mounting nail 3, and also serves to install and fix the main guide rail pair 7.

[0048] By setting normally closed filling valve 5 and normally closed return valve 6, their main function is to supply oil for the main oil cylinder to suck and discharge oil, control the hydraulic pressure of hydraulic chamber 2, realize the effect of pushing piston 20 and push rod 16, and use fixed component 12 and guide column 11 for guidance.

[0049] The guide column 11 is guided and slid by the main guide rail pair 7, and the guide column 11 is limited and guided by the main guide rail rod 21 set inside it, which ensures the movement stability of the guide column 11, improves the guiding accuracy of the guide column 11, and is equipped with a tension spring 22 to assist the guide column 11 in quick reset. The movement of the guide column 11 synchronously drives the prestressed tie rod 14, so that the prestressed tie rod 14 is fixedly connected to the hydraulic press body, thereby assisting the operation of the hydraulic press body.

[0050] The lower crossbeam 8 can be slidably connected to the outside of the hydraulic chamber 2, and the mounting bolt 9 is provided through the lower crossbeam 8. After the mounting nut 10 is threaded and fixed to the outside of the mounting bolt 9, the lower crossbeam 8 is connected to the hydraulic chamber 2. The pre-tightening block 31 abuts against one side of the guide column 11, reducing the guide gap between the guide column 11 and the main guide rail pair 7, increasing the guide accuracy of the prestressed tie rod 14, and the adjustable slider 30 is provided to slide inside the hollow rod 23 using the inner slide rod 24, thereby assisting in changing the abutting force of the pre-tightening block 31.

[0051] Rotating knob 27 causes adjusting screw 26 to rotate inside pre-tightening adjustable body 15, and drives screw slider 28 to slide outside adjusting screw 26. Simultaneously, it drives pressing plate 29 to slide to a limit outside hollow rod 23, thereby adjusting the distance between adjustable slider 30 and pressing plate 29, realizing the function of controlling the compression force of compression spring 25. In turn, compression spring 25 is used to push pre-tightening force block 31, changing the contact force between pre-tightening force block 31 and guide column 11.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-rigidity hydraulic press body structure with pre-tensioned adjustable guide rails, comprising a body shell (1), characterized in that, The bottom of the fuselage housing (1) is connected to a hydraulic chamber (2). An mounting bolt (9) is fixedly connected to the outside of the hydraulic chamber (2). An mounting nut (10) is threaded onto the outside of the mounting bolt (9). A lower crossbeam (8) is slidably connected to the outside of the hydraulic chamber (2). The mounting nut (10) abuts against both sides of the lower crossbeam (8). A main guide rail pair (7) is fixedly connected to both sides of the lower crossbeam (8). A main guide rail rod (21) is fixedly connected inside the main guide rail pair (7). The outside of the main guide rail rod (21)... A guide column (11) is slidably connected to a main guide rail pair (7). A tension spring (22) is fixedly connected to the top of the guide column (11) through the inside of the main guide rail pair (7). A prestressed tie rod (14) is fixedly connected to the bottom of the guide column (11). An auxiliary block (17) is fixedly connected to the outside of the prestressed tie rod (14). A locking screw (18) is fixedly connected to the bottom of the auxiliary block (17). A locking nut (19) is threaded onto the outside of the locking screw (18).

2. The high-rigidity hydraulic press body structure with pre-tensioned adjustable guide rail according to claim 1, characterized in that, The lower crossbeam (8) is fixedly connected to both sides of a pre-tightening adjustable body (15). A hollow rod (23) is fixedly connected inside the pre-tightening adjustable body (15). An inner slide rod (24) is slidably connected inside the hollow rod (23). An adjustable slider (30) is fixedly connected to one end of the inner slide rod (24). The adjustable slider (30) is slidably connected to the pre-tightening adjustable body (15). A pre-tightening force block (31) is fixedly connected to one side of the adjustable slider (30). The pre-tightening force block (31) abuts against one side of the guide column (11).

3. The high-rigidity hydraulic press body structure with pre-tensioned adjustable guide rail according to claim 2, characterized in that, A knob (27) is rotatably connected to one side of the pre-tightening adjustable body (15), and an adjusting screw (26) is fixedly connected to one side of the knob (27) through the pre-tightening adjustable body (15). The adjusting screw (26) is rotatably connected inside the pre-tightening adjustable body (15).

4. The high-rigidity hydraulic press body structure with pre-tensioned adjustable guide rail according to claim 3, characterized in that, The adjusting screw (26) is externally threaded to a screw slider (28), and pressing plates (29) are fixedly connected to both sides of the screw slider (28).

5. The high-rigidity hydraulic press body structure with pre-tensioned adjustable guide rail according to claim 4, characterized in that, The pressing plate (29) is slidably connected to the outside of the hollow rod (23), and a compression spring (25) is fixedly connected to one side of the pressing plate (29). The compression spring (25) is fixedly connected to the adjustable slider (30).

6. The high-rigidity hydraulic press body structure with pre-tensioned adjustable guide rail according to claim 1, characterized in that, The locking screw (18) is externally connected to a wing block (13), and the wing block (13) has a pre-tightening hole (33) inside.

7. The high-rigidity hydraulic press body structure with pre-tensioned adjustable guide rail according to claim 6, characterized in that, A fixing member (12) is fixedly connected between the wing blocks (13), and the fixing member (12) has a plug hole (32) inside.

8. The high-rigidity hydraulic press body structure with pre-tensioned adjustable guide rail according to claim 1, characterized in that, The fuselage housing (1) is fixedly connected to an upper crossbeam (4), which is fixedly connected to the outside of the main guide rail pair (7). The upper crossbeam (4) is fitted with mounting pins (3), which are threadedly connected to the fuselage housing (1).

9. The high-rigidity hydraulic press body structure with pre-tensioned adjustable guide rail according to claim 8, characterized in that, A normally closed filling valve (5) is installed on the top of the fuselage housing (1), and a normally closed return valve (6) is installed on one side of the fuselage housing (1). The normally closed return valve (6) passes through the upper crossbeam (4).

10. The high-rigidity hydraulic press body structure with pre-tensioned adjustable guide rail according to claim 7, characterized in that, A piston (20) is slidably connected inside the hydraulic chamber (2). A push rod (16) is fixedly connected to the bottom of the piston (20). The push rod (16) is slidably connected to the hydraulic chamber (2) and fixedly connected to the fixed component (12).

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