A frame hydraulic press and a method for using automobile parts based on a hydraulic plunger

Abstract

The present invention relates to the technical field of a frame hydraulic press based on a hydraulic plunger, and discloses a frame hydraulic press and a method for using an automobile part based on a hydraulic plunger, comprising a frame structure, wherein the frame structure comprises an upper crossbeam, a lower crossbeam, and a guide column. The frame structure has a pressure difference compensation component in the middle of the main hydraulic plunger assembly between the lower crossbeam and the upper crossbeam to compensate the hydraulic oil inside the main plunger on the side with less force, and the internal pressure of the main plunger on the side with less force increases, so that the main plunger has a greater driving force on the plunger below it, and the oil pressure between the main plungers on both sides approaches the same state, and then the lower crossbeam in an inclined state gradually approaches a horizontal state, that is, the lower crossbeam is in synchronous movement during the subsequent downward movement, pressing the stamping tool at the bottom of the lower crossbeam downward in the direction of the automobile part, avoiding problems such as deformation of the automobile part stamping due to the tilt of the lower crossbeam during the stamping process of the main hydraulic plunger assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of a frame hydraulic press based on a hydraulic plunger, in particular to a frame hydraulic press and a method for using an automobile accessory based on the hydraulic plunger. Background Art

[0002] Hydraulic presses, as key equipment for metal plastic forming, play a vital role in the stamping and manufacturing of automotive parts. Traditional frame-type hydraulic presses typically consist of an upper and lower crossbeams, along with guide columns, with the hydraulic plunger driving the lower crossbeam to complete the stamping operation.

[0003] However, this type of equipment has the following technical bottlenecks in actual application: 1. The traditional guide column and the lower beam are fitted with a rigid sliding fit. When the lower beam tilts due to uneven force during the stamping process, interference friction is prone to occur on the guide surface, which aggravates wear and affects the operating accuracy of the equipment. After long-term use, scratches are easily produced on the surface of the guide column, causing the movement of the lower beam to stagnate, and even causing equipment failure. 2. In a multi-cylinder hydraulic system, insufficient synchronization of the main hydraulic plunger assembly will aggravate the tilt of the lower beam, causing excessive or insufficient force on the stamped parts; especially when stamping precision parts such as automotive accessories, a slight tilt of the lower beam will cause product size deviation or surface wrinkles. In severe cases, secondary rework is required, significantly increasing production costs. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In response to the deficiencies of the prior art, the present invention provides a frame hydraulic press and a method for using automobile parts based on a hydraulic plunger. The press has the advantages of compensating the hydraulic oil inside the main plunger on the side with less force through a pressure differential compensation assembly in the middle of the main hydraulic plunger assembly between the lower crossbeam and the upper crossbeam, thereby increasing the internal pressure of the main plunger on the side with less force, so that the main plunger has a greater driving force on the plunger below it, and the oil pressure between the main plungers on both sides approaches the same state, thereby gradually approaching the horizontal state of the lower crossbeam in an inclined state, that is, the lower crossbeam moves synchronously during the subsequent downward movement, pressing the stamping tool at the bottom of the lower crossbeam downward toward the automobile part, thereby avoiding deformation of the automobile part during the stamping process due to the tilt of the lower crossbeam by the main hydraulic plunger assembly. The press solves the problem that insufficient synchronization of the main hydraulic plunger assembly in a multi-cylinder hydraulic system will aggravate the tilt of the lower crossbeam, resulting in excessive or insufficient force on the local stamped part; especially when stamping precision parts such as automobile parts, a slight tilt of the lower crossbeam will cause product dimensional deviation or surface wrinkles, which may require secondary rework in severe cases, significantly increasing production costs.

[0006] (2) Technical solution

[0007] To solve the above technical problems, the present invention provides the following technical solutions: a frame hydraulic press, comprising a frame structure, wherein the frame structure comprises an upper crossbeam, a lower crossbeam and a guide column, the upper crossbeam and the lower crossbeam being slidably mounted on the guide column; a main hydraulic piston assembly is arranged between the upper crossbeam and the lower crossbeam, the main hydraulic piston assembly comprises a main piston and a main piston rod arranged in parallel, the main piston is located above the lower crossbeam, the main piston rod is slidably arranged on the main piston, the main piston rod is connected to the upper crossbeam, a pressure difference compensation assembly is provided on one side of the main hydraulic piston assembly, the pressure difference compensation assembly is located between the main pistons; the main piston rod and the main piston move away from each other, the upper crossbeam and the lower crossbeam move away from each other, and when one side of the lower crossbeam tilts, the pressure difference compensation assembly compensates the hydraulic oil to the main piston on that side; a spherical guide mechanism is provided on the guide column, and the spherical guide mechanism is installed at the connection between the lower crossbeam and the guide column.

[0008] Preferably, the spherical guide mechanism includes a ball block shaft, a spherical groove and a guide groove. The spherical groove is opened on the lower cross beam. The spherical surface of the ball block shaft is hinged inside the spherical groove. A guide groove is opened in the middle of the ball block shaft. The guide column is slidably connected to the guide groove.

[0009] Preferably, a compensating hydraulic assembly is provided at the bottom of the lower cross beam, and the compensating hydraulic assembly includes a compensating plug and a compensating plug rod. The compensating plugs are evenly distributed around the lower surface of the lower cross beam, and the compensating plug rod is slidably provided at the bottom of the compensating plug. A compensating oil pipe is provided on one side of the compensating plug, and the compensating oil pipe is connected to the compensating hydraulic cylinder.

[0010] Preferably, the main hydraulic piston assembly further includes a rigid balance plate, the rigid balance plate is connected to the main piston rod, a cylinder body is provided at the tail of the main piston rod, and the cylinder body is installed on the lower surface of the upper beam.

[0011] Preferably, a balancing channel is provided between the cylinder bodies, a fan-shaped mounting frame is provided above the middle of the balancing channel, the pressure difference compensation assembly is installed in the middle of the fan-shaped mounting frame, and when the pressure difference compensation assembly is vertical, the balancing channel is in an interrupted state. Connecting holes are provided on both sides above the fan-shaped mounting frame, and the other ends of the connecting holes extend into the balancing channel respectively. A partition is provided above the fan-shaped mounting frame, and the partition separates the top of the balancing channel.

[0012] Preferably, the pressure difference compensation component includes an adjusting terminal and a swinging terminal, the adjusting terminal is located inside the fan-shaped mounting frame, the swinging terminal is located at the bottom of the adjusting terminal, a rotating shaft is provided at the connection between the adjusting terminal and the middle part of the swinging terminal, the rotating shaft is rotatably connected to the center of the fan-shaped mounting frame, the top of the adjusting terminal is consistent with the fan-shaped mounting frame, the bottom of the fan-shaped mounting frame is provided with a swinging groove, and the swinging terminal is located inside the swinging groove.

[0013] Preferably, an external frame is provided outside the frame structure, a protective cover is provided above the external frame, protective nets are provided on both sides of the external frame, the protective nets are slidably connected to the external frame, a workbench is provided at the bottom of the external frame, and the workbench is located directly below the main hydraulic plunger assembly.

[0014] Preferably, conveying platforms are provided on both sides of the workbench, a feeding plate is provided on one side of the conveying platform, a discharge cylinder is provided at one end of the outer side of the feeding plate, clamping cylinders are provided on both sides of the feeding plate, and the feeding plate is slidably provided on the conveying platform.

[0015] Preferably, guide blocks are provided on both sides of the protective net, guide rails are provided on the external frame, the guide blocks are slidably connected to the guide rails, a long-distance telescopic rod is provided above the protective net, and the long-distance telescopic rod is fixed above the side of the external frame.

[0016] A method for using automobile accessories based on a hydraulic plunger uses the frame hydraulic press.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the present invention provides a frame hydraulic press and a method for using automobile parts based on a hydraulic plunger, which has the following beneficial effects:

[0019] 1. The method for using the frame hydraulic press and the automobile accessories based on the hydraulic plunger is as follows: the main plunger at the bottom of the main plunger in the main hydraulic plunger assembly performs telescopic movement. When uneven force occurs during the relative movement of the upper and lower beams, first, under the action of the spherical guide mechanism, when the lower beam tilts due to the uneven force, the spherical guide mechanism prevents interference contact between the lower beam and the guide column, thereby preventing interference wear when the lower beam moves up and down. At the same time, the lower beam can be tilted to a certain extent to accommodate the problem caused by uneven force.

[0020] 2. The method for using the frame hydraulic press and the automobile parts based on the hydraulic plunger is to compensate the hydraulic oil inside the main plunger on the side with less force through the pressure difference compensation component in the middle of the main hydraulic plunger assembly between the lower beam and the upper beam, and the internal pressure of the main plunger on the side with less force increases, so that the main plunger has a greater pushing force on the plunger below it, and the oil pressure between the main plungers on both sides tends to be the same, and then the lower beam in an inclined state gradually approaches a horizontal state, that is, the lower beam is in a synchronous movement during the subsequent downward movement, pressing the stamping tool at the bottom of the lower beam downward toward the automobile parts, avoiding problems such as deformation of the automobile parts during stamping due to the tilt of the lower beam during the stamping process of the main hydraulic plunger assembly.

[0021] 3. The method for using the frame hydraulic press and the automotive accessories based on the hydraulic plunger is to swing the adjusting terminal and the swinging terminal in the pressure difference compensation component with the rotating shaft as the axis in the fan-shaped mounting frame in the middle of the balance channel. When swinging, the adjusting terminal always matches the upper part of the fan-shaped mounting frame. A balancing hole matching the connecting hole is opened in the middle above the adjusting terminal. When the balancing hole is connected to the connecting hole, the hydraulic oil pressure on both sides of the adjusting terminal is balanced.

[0022] 4. The method of using the frame hydraulic press and the automotive accessories based on the hydraulic plunger is as follows: through the balancing channel set between the cylinder bodies, the pressure difference compensation component inside the balancing channel is subjected to different pressures on both sides, causing the pressure difference compensation component to swing to the other side, thereby making the internal pressure on both sides of the balancing channel uniform; when the uneven pressure inside the balancing channel continues to increase, the pressure difference compensation component further swings inside the fan-shaped mounting frame until the connecting hole above the fan-shaped mounting frame cooperates with the pressure difference compensation component to pass the hydraulic oil with higher pressure on one side to the other side, so that the hydraulic pressure on both sides of the partition plate in the middle of the balancing channel is the same.

[0023] 5. The method for using the frame hydraulic press and the automobile parts based on the hydraulic plunger is to use the compensating hydraulic assembly provided at the bottom of the lower crossbeam. When the main hydraulic plunger assembly completes the downward drive of the lower crossbeam, the hydraulic plunger assembly drives the lower crossbeam and the stamping tool at the bottom of the lower crossbeam to perform preliminary stamping processing on the automobile parts, and then the compensating hydraulic assembly performs subsequent finishing processing on the automobile parts. The compensating plug provides oil pressure in the compensating hydraulic cylinder through the compensating oil pipe, so that the compensating plug rod pushes the stamping tool to perform further stamping work, and performs secondary stamping finishing processing on the automobile parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the schematic diagrams of the overall three-dimensional structure of the present invention;

[0025] Figure 2 This is the second schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 3 This is one of the three-dimensional structural diagrams of the main hydraulic plunger assembly and the compensating hydraulic assembly of the present invention;

[0027] Figure 4 This is the second schematic diagram of the three-dimensional structure of the main hydraulic plunger assembly and the compensating hydraulic assembly of the present invention;

[0028] Figure 5 This is a schematic diagram of the explosion structure of the main hydraulic plunger assembly and the compensating hydraulic assembly of the present invention;

[0029] Figure 6 This is one of the schematic diagrams of the internal cross-sectional structure of the main hydraulic plunger assembly of the present invention;

[0030] Figure 7 For the present invention Figure 6 A local enlarged structural diagram of point A;

[0031] Figure 8 This is the second schematic diagram of the internal cross-sectional structure of the main hydraulic plunger assembly of the present invention;

[0032] Figure 9 It is a partial structural diagram of the compensating hydraulic component of the present invention.

[0033] Figure: 1. Frame structure; 11. Upper crossbeam; 12. Lower crossbeam; 13. Guide column; 14. Protective cover; 15. Protective net; 151. Guide block; 152. Long-distance telescopic rod; 16. Workbench; 2. Main hydraulic plunger assembly; 21. Main plunger; 22. Main plunger rod; 23. Rigid balance plate; 24. Cylinder body; 3. Pressure differential compensation assembly; 31. Adjustment terminal; 32. Swing terminal; 33. Rotating shaft; 4. Spherical guide Mechanism; 41. Ball block shaft; 42. Spherical groove; 43. Guide groove; 5. Compensating hydraulic assembly; 51. Compensating plug; 52. Compensating plug rod; 53. Compensating oil pipe; 54. Compensating hydraulic cylinder; 6. Balance channel; 61. Fan-shaped mounting frame; 62. Connecting hole; 63. Partition; 64. Swinging groove; 7. External frame; 71. Guide rail; 8. Conveying platform; 81. Feeding plate; 82. Discharge cylinder; 83. Clamping cylinder. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figures 1-9A frame hydraulic press comprises a frame structure 1, wherein the frame structure 1 comprises an upper crossbeam 11, a lower crossbeam 12 and a guide column 13, wherein the upper crossbeam 11 and the lower crossbeam 12 are slidably mounted on the guide column 13; a main hydraulic piston assembly 2 is provided between the upper crossbeam 11 and the lower crossbeam 12, wherein the main hydraulic piston assembly 2 comprises a main piston 21 and a main piston rod 22 arranged in parallel, wherein the main piston 21 is located above the lower crossbeam 12, and the main piston rod 22 is slidably arranged on the main piston 21, and the main piston rod 22 is slidably mounted on the main piston 21. The upper crossbeam 11 is connected, and a pressure difference compensation component 3 is provided on one side of the main hydraulic piston assembly 2, and the pressure difference compensation component 3 is located between the main pistons 21; the main piston rod 22 moves away from the main piston 21, and the upper crossbeam 11 and the lower crossbeam 12 move away from each other. When one side of the lower crossbeam 12 tilts, the pressure difference compensation component 3 compensates the hydraulic oil to the main piston 21 on that side; a spherical guide mechanism 4 is provided on the guide column 13, and the spherical guide mechanism 4 is installed at the connection between the lower crossbeam 12 and the guide column 13.

[0036] In actual use, the punching tool used for work is installed on the compensating hydraulic assembly 5 below the lower crossbeam 12, and is used to cooperate with the main hydraulic plunger assembly 2 and the compensating hydraulic assembly 5 to punch the automobile parts through the punching tool;

[0037] When in use, it is adjusted through the main hydraulic piston assembly 2 in the middle of the frame structure 1, wherein the main hydraulic piston assembly 2 operates between the upper cross beam 11 and the lower cross beam 12, so that the lower cross beam 12 moves away from and close to the upper cross beam 11, and the main piston rod 22 at the bottom of the main piston column 21 in the main hydraulic piston assembly 2 performs telescopic movement. When uneven force occurs during the relative movement of the upper cross beam 11 and the lower cross beam 12, first, under the action of the spherical guide mechanism 4, when the lower cross beam 12 tilts due to uneven force, the spherical guide mechanism 4 prevents interference contact between the lower cross beam 12 and the guide column 13, thereby preventing interference wear of the lower cross beam 12 when it moves up and down. At the same time, it can also make the lower cross beam 12 tilt to a certain extent to cater to Due to the problem of uneven force, the pressure difference compensation component 3 in the middle of the main hydraulic piston assembly 2 between the lower beam 12 and the upper beam 11 compensates the hydraulic oil inside the main piston 21 on the side with less force, and the internal pressure of the main piston 21 on the side with less force increases, so that the main piston 21 has a greater pushing force on the main piston rod 22 below it, and the oil pressure between the main pistons 21 on both sides tends to be the same, and the lower beam 12 in an inclined state gradually approaches a horizontal state, that is, the lower beam 12 is in a synchronous movement during the subsequent downward movement, pressing the stamping tool at the bottom of the lower beam 12 downward toward the auto parts, avoiding problems such as deformation of the auto parts stamping due to the tilt of the lower beam 12 during the stamping process of the main hydraulic piston assembly 2.

[0038] Furthermore, the spherical guide mechanism 4 includes a ball block shaft 41, a spherical groove 42 and a guide groove 43. The spherical groove 42 is opened on the lower cross beam 12, and the ball block shaft 41 is spherically hinged inside the spherical groove 42. A guide groove 43 is opened in the middle of the ball block shaft 41, and the guide column 13 is slidably connected with the guide groove 43; the ball block shaft 41 in the spherical guide mechanism 4 cooperates with the spherical groove 42 on the lower cross beam 12. When the lower cross beam 12 tilts during movement, the spherical block in the middle of the ball block shaft 41 rotates inside the spherical groove 42. At this time, the guide column 13 slides between the guide groove 43 opened in the middle of the ball block shaft 41, so that the stress between the guide column 13 and the guide groove 43 is reduced, thereby avoiding interference sliding between the guide column 13 and the guide groove 43.

[0039] Furthermore, a compensating hydraulic assembly 5 is provided at the bottom of the lower cross beam 12, and the compensating hydraulic assembly 5 includes a compensating piston 51 and a compensating piston rod 52. The compensating piston 51 is evenly distributed around the lower surface of the lower cross beam 12, and the compensating piston rod 52 is slidably provided at the bottom of the compensating piston 51. A compensating oil pipe 53 is provided on one side of the compensating piston 51, and the compensating oil pipe 53 is connected to the compensating hydraulic cylinder 54; through the compensating hydraulic assembly 5 provided at the bottom of the lower cross beam 12, when the main hydraulic piston assembly 2 completes the downward drive of the lower cross beam 12, the main hydraulic piston assembly 2 drives the lower cross beam 12 and the stamping tool at the bottom of the lower cross beam 12 to perform preliminary stamping processing on the automotive parts, and then the compensating hydraulic assembly 5 performs subsequent finishing processing on the automotive parts, and the compensating piston 51 provides oil pressure in the compensating hydraulic cylinder 54 through the compensating oil pipe 53, so that the compensating piston rod 52 pushes the stamping tool to perform further stamping work, and performs secondary stamping finishing processing on the automotive parts.

[0040] Furthermore, the main hydraulic piston assembly 2 also includes a rigid balance plate 23, which is connected to the main piston rod 22. A cylinder body 24 is provided at the tail of the main piston 21, and the cylinder body 24 is installed on the lower surface of the upper cross beam 11; the main piston rod 22 is connected through the rigid balance plate 23 in the main hydraulic piston assembly 2. When the cylinder body 24 provides oil pressure to the main piston 21, the main piston rod 22 moves synchronously to the greatest extent under the action of the rigid balance plate 23, thereby reducing the tilting of the lower cross beam 12 during operation due to uneven force.

[0041] Furthermore, a balancing channel 6 is provided between the cylinder bodies 24, a fan-shaped mounting frame 61 is provided above the middle of the balancing channel 6, the pressure difference compensation component 3 is installed in the middle of the fan-shaped mounting frame 61, and when the pressure difference compensation component 3 is in a vertical position, the balancing channel 6 is in an interrupted state, and connecting holes 62 are provided on both sides above the fan-shaped mounting frame 61, and the other ends of the connecting holes 62 extend into the balancing channel 6 respectively, and a partition 63 is provided above the fan-shaped mounting frame 61, and the partition 63 separates the top of the balancing channel 6; through The balancing channel 6 is arranged between the cylinder bodies 24. The pressure difference compensation component 3 inside the balancing channel 6 swings to the other side due to the different pressures on both sides, thereby making the internal pressure on both sides of the balancing channel 6 uniform. When the uneven pressure inside the balancing channel 6 continues to increase, the pressure difference compensation component 3 further swings inside the fan-shaped mounting frame 61 until the connecting hole 62 above the fan-shaped mounting frame 61 cooperates with the pressure difference compensation component 3 to pass the hydraulic oil with higher pressure on this side to the other side, so that the hydraulic pressure on both sides of the partition plate 63 in the middle of the balancing channel 6 is the same.

[0042] Furthermore, the pressure difference compensation component 3 includes an adjusting terminal 31 and a swinging terminal 32, the adjusting terminal 31 is located inside the fan-shaped mounting frame 61, the swinging terminal 32 is located at the bottom of the adjusting terminal 31, and a rotating shaft 33 is provided at the connection between the adjusting terminal 31 and the middle part of the swinging terminal 32, the rotating shaft 33 is rotatably connected to the center of the fan-shaped mounting frame 61, the top of the adjusting terminal 31 is consistent with the fan-shaped mounting frame 61, and the bottom of the fan-shaped mounting frame 61 is provided with a swinging groove 64, and the swinging terminal 32 is located inside the swinging groove 64; through the adjusting terminal 31 and the swinging terminal 32 in the pressure difference compensation component 3, the fan-shaped mounting frame 61 in the middle of the balancing channel 6 is swung with the rotating shaft 33 as the axis. When swinging, the adjusting terminal 31 always coincides with the top of the fan-shaped mounting frame 61, and a balancing hole matching the connecting hole 62 is opened in the middle part of the top of the adjusting terminal 31. When the balancing hole is connected to the connecting hole 62, the hydraulic oil pressure on both sides of the adjusting terminal 31 is balanced.

[0043] Furthermore, an external frame 7 is provided on the outside of the frame structure 1, a protective cover 14 is provided above the external frame 7, and protective nets 15 are provided on both sides of the external frame 7. The protective nets 15 are slidably connected to the external frame 7, and a workbench 16 is provided at the bottom of the external frame 7. The workbench 16 is located directly below the main hydraulic plunger assembly 2; the protective cover 14 and the protective net 15 are installed through the external frame 7 provided outside the frame structure 1, and the protective cover 14 is fixed on both sides of the external frame 7, and cooperates with the slidable protective net 15 to protect against dangers such as debris splashing that may occur during the stamping process when the stamping process is carried out above the workbench 16.

[0044] Furthermore, conveying platforms 8 are provided on both sides of the workbench 16, and a feeding plate 81 is provided on one side of the conveying platform 8, and a discharge cylinder 82 is provided at one end of the outer side of the feed plate 81, and clamping cylinders 83 are provided on both sides of the feed plate 81, and the feed plate 81 is slidably provided on the conveying platform 8; the feeding plate 81 is directionally conveyed by the conveying platforms 8 provided on both sides of the workbench 16, and the auto parts are first installed on the feeding plate 81 through the clamping cylinder 83. When the feeding plate 81 is conveyed to the top of the workbench 16, the main hydraulic plunger assembly 2 and the compensation hydraulic assembly 5 drive the stamping tool to stamp the auto parts. After the stamping process is completed, the discharge cylinder 82 is started to send the auto parts stamped on the feeding plate 81 out of the top of the workbench 16, and then the conveying platform 8 pulls the feeding plate 81 back again to install the next auto part.

[0045] Furthermore, guide blocks 151 are provided on both sides of the protective net 15, and guide rails 71 are provided on the external frame 7. The guide blocks 151 are slidably connected to the guide rails 71, and a long telescopic rod 152 is provided above the protective net 15, and the long telescopic rod 152 is fixed above the side of the external frame 7; through the guide blocks 151 on both sides of the protective net 15, in cooperation with the guide rails 71 on the external frame 7, the protective net 15 is lowered and raised before and after stamping. Before stamping, the long telescopic rod 152 drives the protective net 15 to move downward, and the guide blocks 151 on both sides of the protective net 15 move along the guide rails 71. The protective net 15 moves to both ends of the workbench 16 and cooperates with the protective cover 14 to protect the surrounding side of the workbench 16. After stamping is completed, the long telescopic rod 152 drives the protective net 15 to rise, and the stamped auto parts are discharged through the other side, and then the feeding plate 81 returns.

[0046] A method for using automobile accessories based on a hydraulic plunger uses the frame hydraulic press.

[0047] Working principle: During use, the feeding plate 81 is directionally conveyed by the conveying platforms 8 provided on both sides of the workbench 16. The auto parts are first mounted on the feeding plate 81 by the clamping cylinder 83. After the feeding plate 81 is conveyed to the top of the workbench 16, the protective cover 14 and the protective net 15 are installed by the external frame 7 provided outside the frame structure 1. The protective cover 14 is fixed to both sides of the external frame 7 and cooperates with the slidable protective net 15 to protect against the dangers of debris splashing and other possible hazards during the stamping process above the workbench 16. Then, the main hydraulic plunger assembly 2 and the compensating hydraulic assembly 5 drive the stamping tool to stamp the auto parts.

[0048] First, the main hydraulic piston assembly 2 in the middle of the frame structure 1 is adjusted, wherein the main hydraulic piston assembly 2 operates between the upper crossbeam 11 and the lower crossbeam 12, causing the lower crossbeam 12 to move away from and toward the upper crossbeam 11, and the main piston rod 22 at the bottom of the main piston 21 in the main hydraulic piston assembly 2 performs telescopic movement, wherein the rigid balance plate 23 in the main hydraulic piston assembly 2 connects the main piston rod 22. When the cylinder 24 provides oil pressure to the main piston 21, the main piston rod 22 moves synchronously to the greatest extent under the action of the rigid balance plate 23, thereby reducing the tilting of the lower crossbeam 12 during operation caused by uneven force;

[0049] When uneven force occurs during the relative movement of the upper crossbeam 11 and the lower crossbeam 12, first, under the action of the spherical guide mechanism 4, when the lower crossbeam 12 is forced to tilt due to the uneven force, the spherical guide mechanism 4 prevents interference contact between the lower crossbeam 12 and the guide column 13, thereby preventing interference wear of the lower crossbeam 12 during the up and down movement. The ball block shaft 41 in the spherical guide mechanism 4 cooperates with the spherical groove 42 on the lower crossbeam 12. When the lower crossbeam 12 tilts during its movement, the spherical block in the middle of the ball block shaft 41 rotates inside the spherical groove 42. At this time, the guide column 13 slides between the guide groove 43 opened in the middle of the ball block shaft 41, so that the stress between the guide column 13 and the guide groove 43 is reduced, thereby avoiding interference sliding between the guide column 13 and the guide groove 43.

[0050] At the same time, the pressure difference compensation component 3 in the middle of the main hydraulic plunger assembly 2 between the lower crossbeam 12 and the upper crossbeam 11 compensates the hydraulic oil inside the main plunger 21 on the side with less force. At this time, the balance channel 6 is set between the cylinder bodies 24. The pressure difference compensation component 3 inside the balance channel 6 is subjected to different pressures on both sides, causing the pressure difference compensation component 3 to swing to the other side, thereby making the internal pressure on both sides of the balance channel 6 uniform. When the uneven pressure inside the balance channel 6 continues to increase, the pressure difference compensation component 3 further swings inside the fan-shaped mounting frame 61 until the connecting member above the fan-shaped mounting frame 61 is connected. Hole 62 cooperates with the pressure differential compensation component 3 to direct the hydraulic oil with higher pressure on one side to the other side, so that the hydraulic pressure on both sides of the partition plate 63 in the middle of the balancing channel 6 is the same. The adjustment terminal 31 and the swing terminal 32 in the pressure differential compensation component 3 swing around the rotating shaft 33 in the fan-shaped mounting frame 61 in the middle of the balancing channel 6. During the swing, the adjustment terminal 31 always coincides with the upper part of the fan-shaped mounting frame 61. A balancing hole matching the connecting hole 62 is opened in the middle of the upper part of the adjustment terminal 31. When the balancing hole and the connecting hole 62 are connected, the hydraulic oil pressure on both sides of the adjustment terminal 31 is balanced.

[0051] The internal pressure of the main piston 21 on the side with less force increases, so that the main piston 21 has a greater pushing force on the piston stem 22 below it, and the oil pressure between the main pistons 21 on both sides tends to be the same, and then the lower cross beam 12 in an inclined state gradually approaches a horizontal state, that is, the lower cross beam 12 is in a synchronous movement during the subsequent downward movement, pressing the stamping tool at the bottom of the lower cross beam 12 downward toward the automotive parts, avoiding problems such as deformation of the stamping of the automotive parts due to the tilt of the lower cross beam 12 during the stamping process of the main hydraulic piston assembly 2.

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

Claims

1. A frame hydraulic press, comprising a frame structure (1), characterized in that: The frame structure (1) comprises an upper crossbeam (11), a lower crossbeam (12) and a guide column (13), wherein the upper crossbeam (11) and the lower crossbeam (12) are slidably mounted on the guide column (13); a main hydraulic piston assembly (2) is provided between the upper crossbeam (11) and the lower crossbeam (12), wherein the main hydraulic piston assembly (2) comprises a main piston (21) and a main piston rod (22) arranged in parallel, wherein the main piston (21) is located above the lower crossbeam (12), and the main piston rod (22) is slidably mounted on the main piston (21), and the main piston rod (22) is connected to the upper crossbeam (11); a pressure difference compensation assembly (3) is provided on one side of the main hydraulic piston assembly (2), and the pressure difference compensation assembly (3) is located between the main pistons (21); The main piston rod (22) and the main piston column (21) move away from each other, the upper crossbeam (11) and the lower crossbeam (12) move away from each other, and when one side of the lower crossbeam (12) tilts, the pressure difference compensation component (3) compensates the hydraulic oil to the main piston column (21) on that side; A spherical guide mechanism (4) is provided on the guide column (13), and the spherical guide mechanism (4) is installed at the connection between the lower cross beam (12) and the guide column (13); The main hydraulic piston assembly (2) further includes a rigid balance plate (23), the rigid balance plate (23) being connected to the main piston rod (22), a cylinder body (24) being provided at the tail of the main piston rod (21), and the cylinder body (24) being mounted on the lower surface of the upper crossbeam (11); A balancing channel (6) is provided between the cylinder bodies (24), a fan-shaped mounting frame (61) is provided above the middle of the balancing channel (6), the pressure difference compensation component (3) is installed in the middle of the fan-shaped mounting frame (61), and when the pressure difference compensation component (3) is in a vertical position, the balancing channel (6) is in an interrupted state, and connecting holes (62) are provided on both sides above the fan-shaped mounting frame (61), and the other ends of the connecting holes (62) extend into the balancing channel (6), respectively. A partition (63) is provided above the fan-shaped mounting frame (61), and the partition (63) partitions the top of the balancing channel (6); The pressure difference compensation component (3) includes an adjusting terminal (31) and a swinging terminal (32), wherein the adjusting terminal (31) is located inside the fan-shaped mounting frame (61), and the swinging terminal (32) is located at the bottom of the adjusting terminal (31). A rotating shaft (33) is provided at the connection between the adjusting terminal (31) and the middle part of the swinging terminal (32), and the rotating shaft (33) is rotatably connected to the center of the fan-shaped mounting frame (61). The top of the adjusting terminal (31) is aligned with the fan-shaped mounting frame (61), and a swinging groove (64) is provided at the bottom of the fan-shaped mounting frame (61), and the swinging terminal (32) is located inside the swinging groove (64).

2. A frame hydraulic press according to claim 1, characterized in that: The spherical guide mechanism (4) comprises a ball block shaft (41), a spherical groove (42) and a guide groove (43); the spherical groove (42) is provided on the lower cross beam (12); the ball block shaft (41) is spherically hinged inside the spherical groove (42); a guide groove (43) is provided in the middle of the ball block shaft (41); and the guide column (13) is slidably connected to the guide groove (43).

3. The frame hydraulic press according to claim 1, characterized in that: A compensating hydraulic assembly (5) is provided at the bottom of the lower cross beam (12), and the compensating hydraulic assembly (5) includes a compensating plug (51) and a compensating plug rod (52). The compensating plug (51) is evenly distributed around the lower surface of the lower cross beam (12), and the compensating plug rod (52) is slidably provided at the bottom of the compensating plug (51). A compensating oil pipe (53) is provided on one side of the compensating plug (51), and the compensating oil pipe (53) is connected to a compensating hydraulic cylinder (54).

4. A frame hydraulic press according to claim 1, characterized in that: An external frame (7) is provided on the outside of the frame structure (1), a protective cover (14) is provided above the external frame (7), protective nets (15) are provided on both sides of the external frame (7), the protective nets (15) are slidably connected to the external frame (7), and a workbench (16) is provided at the bottom of the external frame (7), and the workbench (16) is located directly below the main hydraulic plunger assembly (2).

5. A frame hydraulic press according to claim 4, characterized in that: Conveying platforms (8) are provided on both sides of the workbench (16), a feeding plate (81) is provided on one side of the conveying platform (8), a discharge cylinder (82) is provided at one end of the outer side of the feeding plate (81), clamping cylinders (83) are provided on both sides of the feeding plate (81), and the feeding plate (81) is slidably provided on the conveying platform (8).

6. The frame hydraulic press according to claim 5, characterized in that: Guide blocks (151) are provided on both sides of the protective net (15), a guide rail (71) is provided on the external frame (7), the guide blocks (151) are slidably connected to the guide rail (71), a long telescopic rod (152) is provided above the protective net (15), and the long telescopic rod (152) is fixed above the side of the external frame (7).

7. A method for using an automobile accessory based on a hydraulic plunger, characterized in that: A frame hydraulic press according to any one of claims 1 to 6 is used.

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