Horizontal rapid cylinder assembly with prefill valve, auxiliary device and prefill method

Abstract

The invention discloses a horizontal type quick cylinder assembly with a prefill valve, an auxiliary device and a prefill method, the horizontal type quick cylinder assembly comprises a horizontal type quick oil cylinder, a quick oil cylinder body, a first piston rod, the prefill valve, a trigger cylinder assembly, a trigger cylinder body, a second piston rod, a joint cover, a fixing plate assembly, a rod end transition plate and a sliding block positioning plate, and the quick oil cylinder body is arranged in the center of the fixing plate assembly; the first piston rod is flexibly connected with the sliding block positioning plate through a rod end transition plate, the trigger cylinder assembly comprises a trigger cylinder body and a second piston rod, the second piston rod is flexibly connected with the sliding block positioning plate through a joint cover, and the horizontal trigger cylinder assembly is arranged on the two sides of the horizontal rapid cylinder assembly to serve as an auxiliary device to assist the prefill valve in completing the liquid supplementing action. The working cost is reduced; the first piston rod is flexibly connected with the sliding block positioning plate through the rod end transition plate, one end of the second piston rod is flexibly connected with the sliding block positioning plate through the joint cover, the situation that the sliding block is abraded fast and strain deviation occurs due to impact loads is avoided, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydraulic presses, and more specifically, relates to a horizontal fast cylinder assembly with a filling valve, an auxiliary device and a method. Background Art

[0002] Improving production efficiency is an important goal in the forging of aviation blades. In order to forge more parts within the limited service life of the die, the forging process needs to be continuously optimized, especially in shortening the manufacturing time of each part. The manufacturing time includes not only the action time of the main machine, such as the rapid forward (fast forward), working stroke (working feed) and rapid return (fast return) of the slider, but also the time of a series of auxiliary actions, such as removing waste (blowing slag), feeding and removing the finished product (discharging). These steps together constitute a complete part forging cycle.

[0003] For the main machine tool, its core component is a slide driven by a cylinder, on which a forging die is installed. In order to achieve rapid movement, the slide must be able to complete the three stages of fast forward, working forward and fast return in a very short time. In addition, in order to minimize the temperature drop of the preheated billet, the forging process also needs to be completed as quickly as possible, because the maintenance of temperature is crucial to the plasticity of the material and the quality of the final product, and high temperature makes the material more easily deformed. Therefore, the requirements for the main machine tool are very high, and it needs to have strong power output, high-precision positioning capability and fast response characteristics. This requires the cylinder to not only provide sufficient thrust to support the rapid movement of the slide, but also to ensure that multiple cycles are completed in a short time without affecting performance.

[0004] Most of the existing main machine tools are vertical oil cylinders. For vertically installed oil cylinders, the slider will pull the piston rod downward under the action of its own weight, forming negative pressure in the piston chamber of the oil cylinder and freeing up space for liquid replenishment; when the filling valve is opened under the drive of the hydraulic signal, the negative pressure will cause the oil tank on the top of the oil cylinder to quickly drain down and fill the piston chamber, thereby achieving rapid downward movement. For horizontally installed oil cylinders, the piston chamber of the oil cylinder cannot form negative pressure and free up space for liquid replenishment; so even if the filling valve is installed, if there is no auxiliary device to trigger the oil cylinder, the piston chamber cannot be quickly filled with liquid, and the piston rod end cannot achieve rapid movement. At present, horizontal oil cylinders mainly increase the oil supply to the piston chamber of the oil cylinder by increasing the number of servo pump groups. Generally, two or more sets of servo pump groups and drivers are required, and the equipment cost is high. Summary of the invention

[0005] In view of the problems that the existing horizontal oil cylinder lacks an auxiliary device to trigger the oil cylinder, is difficult to achieve rapid action, has low work efficiency and high cost, the present invention provides a horizontal fast cylinder assembly with a filling valve, an auxiliary device and a filling method. The filling valve is provided to connect the horizontal fast cylinder assembly, the horizontal fast cylinder assembly is fastened by the main structure plate and the auxiliary structure plate, and horizontal trigger cylinder assemblies are provided on both sides of the horizontal fast cylinder assembly as auxiliary devices. The auxiliary filling valve completes the filling action, thereby realizing a series of tasks such as the fast forward of the horizontal fast cylinder assembly. The filling valve is used to assist in filling, and there is no need to increase the servo pump group for speed increase, thereby reducing costs; and by providing a rod end transition plate and a slider positioning plate flexibly connected at the connection between the first piston rod and the slider positioning plate, and one end of the second piston rod is flexibly connected to the slider positioning plate through a joint cover, it is possible to avoid high-frequency, large-load and offset impact loads that cause the slider guide on the slider positioning plate to wear quickly and the slider to strain and deviate, thereby affecting the normal operation of the horizontal fast cylinder and the trigger cylinder, thereby improving work efficiency.

[0006] In order to achieve the above-mentioned object, according to the first aspect of the present invention, a horizontal fast cylinder assembly with a filling valve and an auxiliary device are provided, comprising a horizontal fast oil cylinder, a fast oil cylinder body, a first piston rod, a filling valve, a trigger cylinder assembly, a trigger cylinder body, a second piston rod, a joint cover, a fixing plate assembly, a rod end transition plate and a slider positioning plate, wherein: The horizontal fast oil cylinder comprises a fast oil cylinder body and a first piston rod. The horizontal fast oil cylinder is placed parallel to the ground. One end of the fast oil cylinder body is connected to the filling valve, and the other end is connected to the first piston rod. The fast oil cylinder body is arranged through the center of the fixed plate assembly. One end of the first piston rod is connected to the fast oil cylinder body, and the other end is flexibly connected to the slider positioning plate through a rod end transition plate. The trigger cylinder assembly includes a trigger cylinder body and a second piston rod. There are two trigger cylinder bodies and they are arranged on both sides of the fast cylinder body and pass through the fixed plate assembly. One end of the second piston rod is connected to the trigger cylinder body, and the other end is flexibly connected to the slider positioning plate through a joint cover.

[0007] Preferably, it includes two-plate flexible sleeves, two-plate flexible screws, a rod end positioning spindle and a rod end screw, a precision hole coaxial with the center of the first piston rod is provided at the center of the rod end transition plate, the rod end positioning spindle is arranged in the first precision hole, the rod end positioning spindle is connected to the first piston rod, step holes are symmetrically provided on both sides of the rod end transition plate, the two-plate flexible sleeves correspond to the step holes, the two-plate flexible sleeves are connected to the slider positioning plate through the two-plate flexible screws, the rod end screws are symmetrically arranged between the step holes, and the first piston rod is connected to the rod end transition plate through the rod end screws.

[0008] Preferably, the two-plate flexible sleeves are two stepped outer circular sleeves with different diameters, the stepped hole corresponds to the stepped outer circular sleeve, the stepped outer circular sleeve is connected to the slider positioning plate through the two-plate flexible screws, the stepped outer circular sleeve and the stepped hole are freely matched with a preset gap, the diameter difference of one step outer circular sleeve is 5mm, which is the radial flexibility value of the slider positioning plate, and the step height difference of the other step outer circular sleeve is 0.5mm, which is the axial flexibility value of the slider positioning plate.

[0009] Preferably, it also includes a second precision hole, a slider flexible core shaft and a slider screw, the second precision hole corresponds to the first precision hole, the second precision hole is a step hole, the slider flexible core shaft is arranged in the second precision hole, the slider flexible core shaft is connected to the slider positioning plate through the slider screw, and the slider flexible core shaft is a step shaft used for interference fit with the slider positioning plate.

[0010] Preferably, it also includes a slider screw and a key block, wherein the key block is arranged on the slider positioning plate and connected thereto via the slider screw.

[0011] Preferably, it includes a joint cover screw, a standard joint bearing, a bearing locking sleeve, a locking nut and an axial elastic retaining ring. The two sides of the joint cover are connected to the slider positioning plate through the joint cover screws. A stepped main hole is provided at the center of the joint cover. The stepped main hole is in contact with the end surface of the slider positioning plate to form an axial closed cavity. The standard joint bearing, bearing locking sleeve, locking nut and axial elastic retaining ring are all arranged in the axial closed cavity. The standard joint bearing can float in the axial and radial directions in the axial closed cavity.

[0012] Preferably, the standard spherical bearing includes a convex ball and a concave ball, the convex spherical surface fits the end face of the second piston rod, and the distance between the convex spherical surface and the upper end face of the joint cover step main hole is the axial flexibility value of the second piston rod, the diameter of the concave spherical surface is smaller than the diameter of the joint cover step main hole, and the difference between the two is the radial flexibility value of the second piston rod, the bearing locking sleeve is a step sleeve, the end with a small diameter of the bearing locking sleeve is tightly arranged on the lower end face of the concave ball, and the end with a large diameter is connected to the locking nut, the locking nut is used to prevent axial movement of the bearing locking sleeve, and an axial elastic retaining ring is provided on the locking nut.

[0013] Preferably, the fixed plate assembly includes a main structure plate and a secondary structure plate, wherein there are two secondary structure plates and they are arranged on both sides of the main structure plate, and there are two secondary structure plates and they are arranged on both sides of the main structure plate. The quick cylinder body is fixedly connected to the secondary structure plate away from the first piston rod through a locking cylinder nut, and the crescent clamp is connected to the secondary structure plate close to the first piston rod through a crescent clamp screw.

[0014] Preferably, it also includes a guide sleeve and a rod end high-pressure flange, wherein the guide sleeve is arranged on one side of the crescent clamp and located on the inner end surface of the fast cylinder body, and is used to guide and seal the first piston rod, and the rod end high-pressure flange is arranged on the top of the inner end surface of the fast cylinder body, and is used for oil inlet and oil outlet of the first piston rod.

[0015] Preferably, it also includes a trigger cylinder mounting seat and a filling valve transition seat, the filling valve transition seat is arranged on the top of the fast oil cylinder body and is connected to the filling valve, and there are two trigger cylinder mounting seats that are symmetrically arranged on the main structure plate and fixedly connected to the trigger cylinder body.

[0016] According to a second aspect of the present invention, a horizontal fast cylinder assembly with a filling valve, an auxiliary device, and a filling method are provided. The horizontal fast cylinder assembly with a filling valve and the auxiliary device are used, and the filling method comprises: Step 1, fast feed stage: the CNC servo hydraulic system controls the second piston rod to extend quickly a few milliseconds before the filling valve, pushing the fast cylinder body to move slightly, so that the piston chamber of the fast cylinder body forms a negative pressure, and the CNC system controls the filling valve to open, so that the piston chamber of the fast cylinder body is replenished with a large flow rate, so as to achieve the fast feed of the fast cylinder body, and realize the horizontal movement of the first piston rod along the direction of the slider positioning plate, and drive the forging die to load horizontally through the slider positioning plate. When the first piston rod reaches the working position, the hydraulic system closes the filling valve; Step 2, working feed stage: After the filling valve is closed, the first piston rod continues to move slowly through the small oil channel to achieve stable working feed. The slider positioning plate and the forging die maintain stable movement during the working feed process to complete the forging process; Step 3, rapid return stage: After forging is completed, the hydraulic system controls the opening of the filling valve, and the hydraulic oil in the piston chamber is quickly discharged back to the oil tank. The first piston rod quickly moves in the opposite direction of the slider positioning plate, and drives the forging die to quickly return to the initial position through the slider positioning plate, while driving the second piston rod to return.

[0017] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art: 1. The horizontal fast cylinder assembly with a filling valve, the auxiliary device and the filling method of the present invention connect the horizontal fast cylinder assembly by setting the filling valve, and fasten the horizontal fast cylinder assembly through the main structure plate and the auxiliary structure plate, and provide horizontal trigger cylinder assemblies on both sides of the horizontal fast cylinder assembly as auxiliary devices. The trigger cylinder assembly pushes the horizontal fast cylinder assembly to move slightly and forms a negative pressure in the piston cavity, and the auxiliary filling valve completes the liquid replenishing action. Due to the action of the filling valve, the rapid feeding speed and the rapid return speed of the horizontal cylinder are improved, that is, the auxiliary time before the working process and the time after the working process are saved, thereby greatly improving the production efficiency; reducing the equipment investment cost, and saving the expensive servo pump group and its driver cost as a whole.

[0018] 2. The horizontal fast cylinder assembly with a filling valve, the auxiliary device and the filling method of the present invention, by setting a rod end transition plate and a flexible connection with the slider positioning plate at the connection between the first piston rod and the slider positioning plate, and one end of the second piston rod is flexibly connected with the slider positioning plate through a joint cover, can avoid high-frequency, large load and offset load impact loads that cause the slider guide rail on the slider positioning plate to wear quickly and the slider to strain and deflect, thereby affecting the normal operation of the horizontal fast cylinder and the trigger cylinder, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereoscopic view of a horizontal fast cylinder assembly with a filling valve and an auxiliary device of the present invention.

[0020] Figure 2 It is a front view of the horizontal fast cylinder assembly with a filling valve and an auxiliary device of the present invention.

[0021] Figure 3 It is a top view of the horizontal fast cylinder assembly with a filling valve and an auxiliary device of the present invention.

[0022] Figure 4 Connect the local section view to the main view.

[0023] Figure 5 This is a partial cross-sectional view of the connection from above.

[0024] Figure 6 for Figure 5 Enlarged view of point A.

[0025] Figure 7 This is a structural diagram of the trigger cylinder assembly.

[0026] Figure 8 Schematic diagram of the fixed plate assembly.

[0027] Fig. 9 This is a cross-sectional view of the rod end transition plate.

[0028] In the figure: 1. Horizontal fast cylinder; 1-1. Fast cylinder body; 1-2. First piston rod; 2. Filling valve; 3. Trigger cylinder assembly; 3-1. Trigger cylinder body; 3-2. Second piston rod; 4. Crescent clamp plate; 5. Guide sleeve; 6. Filling valve seat; 7. Rod end transition plate; 7-1. First precision hole; 7-2. Step hole; 7-3. Second precision hole; 8. Slider positioning plate; 9. Filling valve transition seat; 10. Joint cover; 11. High-pressure flange; 12. Slider flexible mandrel; 13. Two-plate flexible sleeve; 14. Two-plate flexible screw; 15. Rod end positioning mandrel; 16. Rod end Screw; 17, slider screw; 18, key block; 19, joint cover screw; 20, standard joint bearing; 21, bearing locking sleeve; 22, locking nut; 23, axial elastic retaining ring; 24, main structure plate; 25, auxiliary structure plate; 26, crescent clamp screw; 27, cylinder lock nut; 28, rod chamber oil port; 29, trigger cylinder mounting seat; 30, transition seat screw; 31, nut screw; 32, rod end high pressure flange; 33, plug end high pressure flange; 34, first radial flexibility; 35, first axial flexibility; 36, second radial flexibility; 37, second axial flexibility; 38, mounting seat screw. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Depend on Figures 1 to 9 As shown, the horizontal fast cylinder assembly with a filling valve and the auxiliary device of the present invention include a horizontal fast oil cylinder 1, a filling valve 2, a fixed plate assembly, a trigger cylinder assembly 3, a rod end transition plate 7 and a slider positioning plate 8. The filling valve 2 is connected to the horizontal fast oil cylinder 1 and provides oil for it. The horizontal fast oil cylinder 1 is fixedly arranged at the center of the fixed plate assembly. The output end of the horizontal fast oil cylinder 1 is connected to the slider positioning plate 8 through the rod end transition plate 7. The slider positioning plate 8 is used to install the forging die. The trigger cylinder assembly 3 is arranged on both sides of the horizontal fast oil cylinder 1 and is fixedly connected to the fixed plate assembly. The output end of the trigger cylinder assembly 3 is provided with a flexible connection joint connected to the slider positioning plate 8. The flexible connection joint can reduce the wear of the slider guide rail and the strain deviation of the slider under high frequency, large load and offset impact load.

[0031] The horizontal fast cylinder 1 comprises a fast cylinder body 1-1 and a first piston rod 1-2. The fast cylinder body 1-1 is placed parallel to the ground. One end of the fast cylinder body 1-1 is connected to the filling valve 2, and the other end is connected to the first piston rod 1-2.

[0032] The fixed plate assembly includes a main structure plate 24 and a secondary structure plate 25. Three precision holes are equidistantly arranged on the main structure plate 24 and the secondary structure plate 25. The middle one is a large precision main hole for installing the quick cylinder body 1-1. The small precision holes on both sides are symmetrically arranged for installing the trigger cylinder assembly to achieve radial positioning of the trigger cylinder assembly. There are two secondary structure plates 25 and they are arranged on both sides of the main structure plate 24 by welding. The quick cylinder body 1-1 is fixedly connected to the secondary structure plate 25 away from the first piston rod 1-2 through a locking cylinder nut 27. The crescent clamping plate 4 is fixedly connected to the secondary structure plate 25 close to the first piston rod 1-2 through a crescent clamping plate screw 26. The specific connection is: The outer circle of the middle part of the quick cylinder body 1-1 is precisely positioned on the large-precision main hole on the main structure plate 24 and the auxiliary structure plate 25. The outer end face of the quick cylinder body 1-1 is provided with a fine thread for installing the lock cylinder nut 27. The lock cylinder nut 27 is provided with a coaxial circumferential arc distribution T-slot. The nut screw 31 passes through it and is screwed into the internal thread of the quick cylinder body 1-1, so that the lock cylinder nut 27 is locked and not loosened, ensuring that the quick cylinder body 1-1 will not loosen when the machine tool vibrates during operation, realizing the axial locking of the quick cylinder body 1-1, and at the same time ensuring the fast connection between the quick cylinder body 1-1 and the main structure plate 24 and the auxiliary structure plate 25, thereby realizing the radial locking of the quick cylinder body 1-1.

[0033] An annular groove for mounting a crescent clamp 4 is provided on the end surface of the quick cylinder body 1-1 near the first piston rod 1-2. The width of the annular groove is consistent with the thickness of the crescent clamp 4, which can further realize the axial positioning of the quick cylinder body 1-1. The crescent clamp 4 is provided with a plurality of screw countersunk holes for fixedly connecting with the secondary structure plate 25 through the crescent clamp screw 26. It can be seen that the crescent clamp 4 is positioned through the annular groove, and the quick cylinder body 1-1 is locked by the crescent clamp 4 and the locking cylinder nut 27, which are relatively parallel and spaced from the main structure plate 24 and the secondary structure plate 25. The crescent clamp 4 can be split into two halves for easy assembly and disassembly.

[0034] It also includes a guide sleeve 5 and a rod end high-pressure flange 32. The guide sleeve 5 is arranged on the inner end surface of the fast cylinder body 1-1, and is used to guide and seal the first piston rod 1-2. A plane is provided on the top of the inner end surface of the fast cylinder body 1-1, and an oil hole is provided on the plane. The plane is connected to the rod end high-pressure flange 32, and an oil channel for the first piston rod 1-2 to return oil inlet and extend oil outlet is formed through the oil hole.

[0035] A plug-end high-pressure flange 33 is installed at one end of the fast cylinder body 1-1 away from the first piston rod 1-2. When working, the valve-controlled high-pressure oil can enter the piston cavity through the oil port of the plug-end high-pressure flange 33, pushing the first piston rod 1-2 to work horizontally at a low speed; when the first piston rod 1-2 returns quickly, the oil port of the plug-end high-pressure flange 33 is closed, and a large amount of oil enters the machine tool oil tank through the filling valve; when the first piston rod 1-2 returns and approaches the dead point, the filling valve is closed in advance, and the oil port of the plug-end high-pressure flange 33 is opened under the control of the solenoid valve, and a small amount of hydraulic oil returns to the oil tank through this channel. This opening and closing action sequence is to buffer the return impact.

[0036] A rod chamber oil port 28 is also provided on the fast cylinder body 1-1, and the valve-controlled high-pressure oil can enter the rod chamber through the rod chamber oil port 28 to push the first piston rod 1-2 to return horizontally quickly; when the filling valve quickly fills the piston chamber, or the valve-controlled high-pressure oil enters the piston chamber, the rod chamber oil port 28 is an oil return channel.

[0037] The top of the fast cylinder body 1-1 is fixedly connected to the filling valve seat 6 by a transition seat screw 30, and the top of the filling valve seat 6 is connected to the filling valve transition seat 9. The filling valve transition seat 9 is provided with a large channel for connecting the filling valve 2 with the oil cylinder, and the lower end of the filling valve 2 is connected to the filling valve transition seat 9. The upper end of the filling valve transition seat 9 is sealed and vertically arranged, and the lower end of the filling valve transition seat 9 is sealed and vertically connected to the flange surface on the upper side of the cylinder. Under the action of the oil potential energy of the high-position oil tank, the oil leaks down the vertical large oil port very quickly, which can meet the needs of fast fluid replenishment during fast forward and piston cavity.

[0038] A signal oil port is provided at the upper end of the filling valve 2, which is used to receive the pressure oil signal sent by the reversing valve under the control of the PLC, so as to realize the opening or closing of the filling valve 2. A large oil channel is provided horizontally in the middle of the filling valve 2 and is connected to the large oil hole on the lower end face of the machine tool oil tank through the mounting flange. The specific working process is as follows: when the electromagnetic reversing valve receives the control signal and accurately controls the filling valve 2 to open, the trigger cylinder assembly has simultaneously pushed the first piston rod 1-2 to move horizontally, and the piston cavity produces a negative pressure cavity; the hydraulic oil in the oil tank will quickly enter the piston cavity through the large oil channel of the filling valve 2. Due to the large diameter of the large oil channel and the small flow resistance of the oil, the hydraulic oil can quickly fill the piston cavity, push the first piston rod 1-2 to move horizontally and quickly, and realize the fast feeding of the empty stroke, that is, fast forward; the trigger cylinder assembly is a single-acting plunger cylinder, and the pressure oil is controlled by a specially controlled electromagnetic valve to quickly push the second piston rod 3-2 to move horizontally, and then push the horizontal slider, thereby dragging and pushing the first piston rod 1-2 to move horizontally.

[0039] When a quick return is required, the electromagnetic reversing valve controls the filling valve 2 to open again, so that the hydraulic oil in the piston chamber is quickly discharged back to the oil tank through the large oil channel of the filling valve 2, and the first piston rod 1-2 moves outward quickly and horizontally to achieve a quick return. At the same time, the electromagnetic reversing valve of the trigger cylinder assembly is reversed, the cylinder returns oil to unload, and the second piston rod 3-2 is driven by the slider to return horizontally.

[0040] When the electromagnetic reversing valve receives the control signal and accurately controls the filling valve 2 to close, the large oil channel is cut off, and the high-pressure oil enters the piston chamber from the small oil channel; the resistance of the small oil channel is large, and the hydraulic oil in and out of the piston chamber is slow, and the movement speed of the first piston rod 1-2 is slowed down, achieving smooth working feed.

[0041] One end of the first piston rod 1-2 is connected to the fast cylinder body 1-1, and the other end is flexibly connected to the slider positioning plate 8 through the rod end transition plate 7. The specific method of the flexible connection is: It also includes two-plate flexible sleeves 13, two-plate flexible screws 14, a rod end positioning spindle 15 and a rod end screw 16. The two-plate flexible sleeve 13 is arranged between the rod end transition plate 7 and the slider positioning plate 8. The outer end surface of the output end of the first piston rod 1-2 is provided with an open groove. The center of the rod end transition plate 7 is provided with a precision hole 7-1 coaxial with the center of the first piston rod 1-2. The rod end positioning spindle 15 is arranged in the first precision hole 7-1. The rod end positioning spindle 15 is connected to the first piston rod 1-2. At this point, the center of the first piston rod 1-2 is connected to the center of the rod end transition plate 7 through the rod end positioning spindle 15.

[0042] Step holes 7-2 are symmetrically arranged on both sides of the rod end transition plate 7, and the two-plate flexible sleeves 13 correspond to the step holes 7-2. The two-plate flexible sleeves 13 are connected to the slider positioning plate 8 through the two-plate flexible screws 14. There are two rod end screws 16 and they are symmetrically arranged between the two step holes 7-2. The two sides of the first piston rod 1-2 are connected to the rod end transition plate 7 through the rod end screws 16.

[0043] The two-plate flexible sleeve 13 is two stepped outer circular sleeves with a larger and smaller diameter. The end face of the small step outer circular sleeve is in contact with the end face of the precision hole on the slider positioning plate 8 and is connected by the two-plate flexible screws 14. The outside of the small step outer circular sleeve and the hole corresponding to the rod end transition plate 7 are freely matched with a preset gap, that is, a certain gap is reserved between the outer circle and the hole. The radial preset gap is the radial flexibility value of the first piston rod 1-2, and the diameter is 5mm; the step hole 7-2 corresponds to the step outer circular sleeve, and the step outer circular sleeve is connected to the slider positioning plate 8 by the two-plate flexible screws 14. The step outer circular sleeve and the step hole 7-2 are freely matched with a preset gap. On the one hand, the diameter difference between the relevant outer circle and the inner hole of the step outer circular sleeve is 5mm, which is the radial flexibility value of the slider positioning plate 8. On the other hand, the difference between the small precision outer circle step height of the positioned step outer circular sleeve and the corresponding hole step height is 0.5mm, which is the axial flexibility value of the slider positioning plate 8.

[0044] Specifically, the large and small diameters of the two groups of step holes 7-2 of the rod end transition plate 7 correspond to the large step outer diameter at one end of the two-plate flexible sleeve 13 and the small step outer diameter at the other end, respectively, wherein the small step outer end face is interference fit with the precision hole on the slider positioning plate 8, and the small end outer end face is precisely fitted with the bottom end face of the precision hole and is fastened by the two-plate flexible screws 14. There are multiple groups of such structures, so that the two-plate flexible sleeve 13 and the slider positioning plate 8 become a rigid whole, and the small end outer circle and the hole corresponding to the rod end transition plate 7 are freely matched with a preset gap, and the radial preset gap is the first radial flexibility 34, and the radial value is 2.5mm on one side, which corresponds to the radial flexibility value of the above-mentioned slider positioning plate 8, ensuring that there is a gap after the two-plate flexible sleeve 13 and the slider positioning plate 8 are fastened; The first axial flexibility 35 ensures that the slider positioning plate 8 and the rod end transition plate 7 are fastened together while having a slight axial degree of freedom, serving the first radial flexibility 34. Specifically, the large step end surface of the two-plate flexible sleeve 13 is higher than the large step hole end surface of the rod end transition plate 7, and the value is 0.5 mm, which corresponds to the axial flexibility value of the above-mentioned slider positioning plate 8.

[0045] The fast cylinder body 1-1 is placed horizontally, and the slider driven by it is also horizontal. When the horizontal guide rail pair of the slider is worn, the slider will automatically drop to maintain the normal gap of the horizontal guide rail due to its own weight and the mold clamping force. The first radial flexibility value of the slider positioning plate 8 is the allowable value for the automatic compensation of the horizontal guide rail, and the first axial flexibility value of the slider positioning plate 8 is to ensure that the micro-motion of the automatic compensation can occur; if there is no first axial flexibility value, the slider positioning plate 8 is easy to be locked.

[0046] The slider positioning plate 8 further includes a slider screw 17 and a key block 18 . The key block 18 is arranged on the slider positioning plate 8 and connected thereto via the slider screw 17 .

[0047] It also includes a second precision hole 7-3, a slider flexible core shaft 12 and a slider screw 17. The second precision hole 7-3 corresponds to the first precision hole 7-1. The second precision hole 7-3 is a stepped hole. The slider flexible core shaft 12 is arranged in the second precision hole 7-3. The large hole in the second precision hole 7-3 is used to install the slider flexible core shaft 12, and the small hole is used for slider correction and centering. The slider flexible core shaft 12 is connected to the slider positioning plate 8 through the slider screw 17. The slider flexible core shaft 12 is a stepped shaft. The large outer circle in the stepped shaft has a small interference fit with the slider positioning plate 8, and the small outer circle is inserted into the center hole of the rod end transition plate through a large gap. This large gap is the maximum radial flexibility value of the slider positioning plate 8. The maximum radial flexibility value is greater than the first radial flexibility value. The maximum radial flexibility value is the limit value of the radial flexibility set for the first radial flexibility value. When the slider of the fast cylinder body 1-1 is horizontally loaded, the small outer circle size of the slider flexible core shaft 12 stipulates that its flexibility has a limit or upper limit, that is, the maximum radial flexibility value. The significance of its setting lies here. The maximum radial flexibility is 3mm per side.

[0048] The trigger cylinder assembly 3 includes a trigger cylinder body 3-1, a second piston rod 3-2 and a trigger cylinder mounting seat 29. The trigger cylinder body 3-1 has two small precision holes which are arranged on both sides of the fast cylinder body 1-1 and penetrate the main structure plate 24. One end of the second piston rod 3-2 is connected to the trigger cylinder body 3-1, and the other end is flexibly connected to the slider positioning plate 8 through the joint cover 10. The specific method of the flexible connection is: It also includes a joint cover screw 19, a standard joint bearing 20, a bearing locking sleeve 21, a locking nut 22 and an axial elastic retaining ring 23. The two sides of the joint cover 10 are connected to the slider positioning plate 8 through the joint cover screws 19. A stepped main hole is provided at the center of the joint cover 10. The large main hole in the stepped main hole fits with the end surface of the slider positioning plate 8 to form an axially closed cavity. The standard joint bearing 20, the bearing locking sleeve 21, the locking nut 22 and the axial elastic retaining ring 23 are all arranged in the axially closed cavity. The standard joint bearing 20 can float in the axial and radial directions in the axially closed cavity.

[0049] The standard spherical joint bearing 20 includes a convex ball and a concave ball. The convex spherical surface and the concave spherical surface match to form a freely rotatable street. The convex spherical surface fits the end face of the second piston rod 3-2, and the distance between the convex spherical surface and the upper end face of the step main hole of the joint cover 10 is the second axial flexibility 37 of the second piston rod 3-2, which is 0.5mm. The diameter of the concave spherical surface is smaller than the diameter of the step main hole of the joint cover 10. The difference between the two is the second radial flexibility 36 of the second piston rod 3-2, which is 3mm. This arrangement allows the lower end face of the large main hole of the standard spherical joint bearing 20 to fit freely with the end face of the slider positioning plate 8, and can float in the radial and axial directions in the cavity of the joint cover 10. Moreover, the convex spherical surface and the concave spherical surface fit freely and can rotate slightly around the ball at a small angle, so that when the output end of the second piston rod 3-2 receives an overload or misalignment of the slider, it can automatically compensate flexibly without damaging the second piston rod 3-2. At the same time, the diameter of the small main hole in the stepped main hole of the joint cover 10 is larger than the diameter of the second piston rod 3 - 2 , and the difference between the two is consistent with the value of the second radial flexibility 36 .

[0050] The bearing locking sleeve 21 is a stepped sleeve. The small diameter end of the bearing locking sleeve 21 is tightly arranged on the lower end surface of the concave ball, and the large diameter end is connected to the locking nut 22. The locking nut 22 is used to prevent the bearing locking sleeve 21 from axial movement. An axial elastic retaining ring 23 is provided on the locking nut 22. When the trigger cylinder body 3-1 moves downward rapidly, the second piston rod 3-2 pushes the slider positioning plate 8 through the lower end surface of the concave ball of the standard spherical bearing 20. When the trigger cylinder body 3-1 is driven by the first piston rod 1-2 on the fast cylinder body 1-1 to return quickly, the large diameter end surface of the bearing locking sleeve 21 is tightly arranged on the lower end surface of the concave ball of the standard spherical bearing 20.

[0051] The trigger cylinder mounting seat 29 is a cylindrical assembly welded part with flanges at both ends. There are two of them and they are symmetrically installed on both sides of the fast oil cylinder body 1-1. The upper flange of the trigger cylinder mounting seat 29 is positioned and fastened with the trigger cylinder body 3-1 by screws, and the lower flange is fixedly connected with the main structure plate 24 by the mounting seat screws 38. The upper flange surface is provided with a high-pressure flange 11, the main hole of which is the oil inlet and return channel of the trigger cylinder assembly. The high-pressure flange 11 is fixed and sealed to the trigger cylinder mounting seat 29, and is used to seal the trigger cylinder assembly. The precision outer circle of the trigger cylinder body 3-1 is positioned on the small precision holes symmetrically arranged on both sides of the main structure plate 24 and the auxiliary structure plate 25 and the coaxial sinking table precision hole.

[0052] The output end of the second piston rod 3-2 is provided with a locking assembly, such as a double retaining ring groove, a fine pitch external thread, an outer circle of the thread end, a bearing positioning outer circle and a radial flexible outer circle. The other end is provided with an annular welded wear-resistant copper alloy to assist the guiding structure of the second piston rod 3-2. A return impact buffer and an anti-deformation structure can also be provided to prevent deformation of the second piston rod 3-2.

[0053] The specific filling method is: Step 1: Rapid feed stage: The CNC servo hydraulic system controls the second piston rod 3-2 to extend quickly a few milliseconds before the filling valve 2, pushing the rapid cylinder body 1-1 to move slightly, also called auxiliary movement, so that the piston chamber of the rapid cylinder body 1-1 forms a negative pressure, which is an instantaneous first action; the CNC system accurately controls the opening and closing signals of the filling valve 2, and the filling valve opens quickly, which is an instantaneous first action, so that the piston chamber of the rapid cylinder body 1-1 is replenished with a large flow rate, thereby realizing the rapid forward of the rapid cylinder body 1-1, and realizing the horizontal movement of the first piston rod 1-2 along the direction of the slider positioning plate 8, and driving the forging die to be loaded horizontally through the slider positioning plate 8. When the slider positioning plate 8 is close to the working position, the trigger cylinder assembly detects this position and sends a signal to the control system. After receiving the signal, the control system controls the electromagnetic reversing valve to close the filling valve 2, and the valve-controlled pressure oil enters the plug chamber to start working feeding.

[0054] Step 2: Working feed stage: After the filling valve 2 is closed, the first piston rod 1-2 continues to move slowly through the small oil channel to achieve smooth working feed. The slider positioning plate 8 and the forging die maintain stable movement during the working feed process to complete the forging process.

[0055] Step 3: Rapid return stage: After forging is completed, the hydraulic system sends a signal to the electromagnetic reversing valve to open the filling valve 2 again, and the pressure oil enters the rod chamber. The hydraulic oil in the piston chamber is quickly discharged back to the oil tank, and the first piston rod 1-2 moves horizontally in the opposite direction of the slider positioning plate 8. The slider positioning plate 8 drives the forging die to quickly return to the initial position. After the first piston rod 1-2 returns to the initial position, the filling valve 2 is closed to stop the rapid return, and the second piston rod 3-2 is dragged back at the same time.

[0056] The present invention discloses a horizontal fast cylinder assembly with a filling valve, an auxiliary device and a filling method. The filling valve is provided to connect the horizontal fast cylinder assembly, the horizontal fast cylinder assembly is fastened by a main structure plate and a secondary structure plate, and horizontal trigger cylinder assemblies are provided on both sides of the horizontal fast cylinder assembly as auxiliary devices. The auxiliary filling valve completes the filling action, thereby realizing a series of operations such as fast forward of the horizontal fast cylinder assembly. The filling valve is used to assist in the filling, and there is no need to increase the servo pump group for speed increase, thereby reducing costs. The rod end transition plate is provided at the connection between the first piston rod and the slider positioning plate and is flexibly connected to the slider positioning plate. One end of the second piston rod is flexibly connected to the slider positioning plate through a joint cover, thereby avoiding high-frequency, large-load and eccentric impact loads that cause the slider guide rail on the slider positioning plate to wear quickly and the slider to strain and deviate, thereby affecting the normal operation of the horizontal fast cylinder and the trigger cylinder, thereby improving work efficiency.

[0057] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A horizontal fast cylinder assembly with a filling valve and an auxiliary device, characterized in that: It comprises a horizontal fast oil cylinder (1), a fast oil cylinder body (1-1), a first piston rod (1-2), a filling valve (2), a trigger cylinder assembly (3), a trigger cylinder body (3-1), a second piston rod (3-2), a joint cover (10), a fixing plate assembly, a rod end transition plate (7) and a slider positioning plate (8), wherein: The horizontal fast oil cylinder (1) comprises a fast oil cylinder body (1-1) and a first piston rod (1-2). The horizontal fast oil cylinder (1) is placed parallel to the ground. One end of the fast oil cylinder body (1-1) is connected to the filling valve (2), and the other end is connected to the first piston rod (1-2). The fast oil cylinder body (1-1) is arranged through the center of the fixed plate assembly. One end of the first piston rod (1-2) is connected to the fast oil cylinder body (1-1), and the other end is flexibly connected to the slider positioning plate (8) through a rod end transition plate (7). The trigger cylinder assembly (3) comprises a trigger cylinder body (3-1) and a second piston rod (3-2); the trigger cylinder bodies (3-1) are two and are arranged on both sides of the fast oil cylinder body (1-1) and penetrate the fixed plate assembly; one end of the second piston rod (3-2) is connected to the trigger cylinder body (3-1), and the other end is flexibly connected to the slider positioning plate (8) through a joint cover (10).

2. The horizontal fast cylinder assembly with a filling valve and auxiliary device according to claim 1, characterized in that: The invention comprises a two-plate flexible sleeve (13), a two-plate flexible screw (14), a rod end positioning mandrel (15) and a rod end screw (16); a precision hole (7-1) coaxial with the center of the first piston rod (1-2) is provided at the center of the rod end transition plate (7); the rod end positioning mandrel (15) is arranged in the first precision hole (7-1); the rod end positioning mandrel (15) is connected to the first piston rod (1-2); step holes (7-2) are symmetrically provided on both sides of the rod end transition plate (7); the two-plate flexible sleeve (13) corresponds to the step holes (7-2); the two-plate flexible sleeve (13) is connected to the slider positioning plate (8) through the two-plate flexible screw (14); the rod end screw (16) is symmetrically arranged between the step holes (7-2); the first piston rod (1-2) is connected to the rod end transition plate (7) through the rod end screw (16).

3. The horizontal fast cylinder assembly with a filling valve and the auxiliary device according to claim 2, characterized in that: The two-plate flexible sleeves (13) are two stepped outer circular sleeves with different diameters. The stepped hole (7-2) corresponds to the stepped outer circular sleeve. The stepped outer circular sleeve is connected to the slider positioning plate (8) via a two-plate flexible screw (14). The stepped outer circular sleeve and the stepped hole are freely matched with a preset gap. The diameter difference of one stepped outer circular sleeve is 5 mm, which is the radial flexibility value of the slider positioning plate (8). The step height difference of the other stepped outer circular sleeve is 0.5 mm, which is the axial flexibility value of the slider positioning plate (8).

4. The horizontal fast cylinder assembly with a filling valve and the auxiliary device according to claim 2, characterized in that: The invention also comprises a second precision hole (7-3), a slider flexible core shaft (12) and a slider screw (17); the second precision hole (7-3) corresponds to the first precision hole (7-1); the second precision hole (7-3) is a stepped hole; the slider flexible core shaft (12) is arranged in the second precision hole (7-3); the slider flexible core shaft (12) is connected to the slider positioning plate (8) via the slider screw (17); the slider flexible core shaft (12) is a stepped shaft for interference fit with the slider positioning plate (8).

5. The horizontal fast cylinder assembly with a filling valve and the auxiliary device according to claim 4, characterized in that: It also includes a slider screw (17) and a key block (18), wherein the key block (18) is arranged on the slider positioning plate (8) and connected thereto via the slider screw (17).

6. The horizontal fast cylinder assembly with a filling valve and the auxiliary device according to claim 1, characterized in that: The invention comprises a joint cover screw (19), a standard joint bearing (20), a bearing locking sleeve (21), a locking nut (22) and an axial elastic retaining ring (23); the two sides of the joint cover (10) are connected to the slider positioning plate (8) through the joint cover screws (19); a stepped main hole is provided at the center of the joint cover (10); the stepped main hole is abutted against the end surface of the slider positioning plate (8) to form an axial closed cavity; the standard joint bearing (20), the bearing locking sleeve (21), the locking nut (22) and the axial elastic retaining ring (23) are all arranged in the axial closed cavity; the standard joint bearing (20) can float in the axial and radial directions in the axial closed cavity.

7. The horizontal fast cylinder assembly with a filling valve and the auxiliary device according to claim 6, characterized in that: The standard spherical bearing (20) comprises a convex ball and a concave ball, the convex spherical surface fits the end surface of the second piston rod (3-2), and the distance between the convex spherical surface and the upper end surface of the step main hole of the joint cover (10) is the axial flexibility value of the second piston rod (3-2), the diameter of the concave spherical surface is smaller than the diameter of the step main hole of the joint cover (10), and the difference between the two is the radial flexibility value of the second piston rod (3-2), the bearing locking sleeve (21) is a step sleeve, the end of the bearing locking sleeve (21) with a smaller diameter is tightly arranged on the lower end surface of the concave ball, and the end with a larger diameter is connected to the locking nut (22), the locking nut (22) is used to prevent the bearing locking sleeve (21) from axial movement, and the locking nut (22) is provided with an axial elastic retaining ring (23).

8. The horizontal fast cylinder assembly with a filling valve and the auxiliary device according to claim 7, characterized in that: It comprises a locking cylinder nut (27), a crescent clamping plate (4) and a crescent clamping plate screw (26); the fixing plate assembly comprises a main structure plate (24) and a secondary structure plate (25); there are two secondary structure plates (25) arranged on both sides of the main structure plate (24); the fast cylinder body (1-1) is fixedly connected to the secondary structure plate (25) away from the first piston rod (1-2) through the locking cylinder nut (27); the crescent clamping plate (4) is connected to the secondary structure plate (25) close to the first piston rod (1-2) through the crescent clamping plate screw (26).

9. The horizontal fast cylinder assembly with a filling valve and the auxiliary device according to claim 8, characterized in that: It also includes a guide sleeve (5) and a rod end high-pressure flange (32), wherein the guide sleeve (5) is arranged on one side of the crescent clamp (4) and is located on the inner end surface of the fast cylinder body (1-1) and is used to guide and seal the first piston rod (1-2), and the rod end high-pressure flange (32) is arranged on the top of the inner end surface of the fast cylinder body (1-1) and is used for oil inlet and oil outlet of the first piston rod (1-2).

10. The horizontal fast cylinder assembly with a filling valve and the auxiliary device according to claim 8, characterized in that: It also includes a trigger cylinder mounting seat (29) and a filling valve transition seat (9), wherein the filling valve transition seat (9) is arranged on the top of the fast oil cylinder body (1-1) and is connected to the filling valve (2), and there are two trigger cylinder mounting seats (29) which are symmetrically arranged on the main structure plate (24) and fixedly connected to the trigger cylinder body (3-1).

11. A horizontal fast cylinder assembly with a filling valve, an auxiliary device and a filling method, characterized in that: The horizontal fast cylinder assembly with a filling valve and an auxiliary device according to any one of claims 1 to 10 are used, and the filling method includes: Step 1, fast feed stage: the numerical control servo hydraulic system controls the second piston rod (3-2) to quickly extend a few milliseconds before the filling valve (2), pushing the fast cylinder body (1-1) to slightly move, so that the piston chamber of the fast cylinder body (1-1) forms a negative pressure, and the numerical control system controls the filling valve (2) to open, so that the piston chamber of the fast cylinder body (1-1) is filled with a large flow rate, so as to achieve the fast feed of the fast cylinder body (1-1), and achieve the horizontal movement of the first piston rod (1-2) along the direction of the slider positioning plate (8), and drive the forging die to be loaded horizontally through the slider positioning plate (8). When the first piston rod (1-2) reaches the working position, the hydraulic system closes the filling valve (2); Step 2, working feed stage: after the filling valve (2) is closed, the first piston rod (1-2) continues to move slowly through the small oil channel to achieve stable working feed, and the slider positioning plate (8) and the forging die maintain stable movement during the working feed process, completing the forging process; Step 3, rapid return stage: After forging is completed, the hydraulic system controls the opening of the filling valve (2), and the hydraulic oil in the piston chamber is quickly discharged back to the oil tank. The first piston rod (1-2) quickly moves in the opposite direction of the direction of the slider positioning plate (8), and drives the forging die to quickly return to the initial position through the slider positioning plate (8), while driving the second piston rod (3-2) to return.

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