A safety type frame hydraulic press control device

Abstract

The application relates to the technical field of hydraulic machines, and discloses a safe frame type hydraulic machine control device, which comprises a hydraulic cylinder body, a base, an upper plate and a plurality of jacks, the hydraulic cylinder body is vertically fixed to the side wall of the upper plate, two cross plates are arranged between the base and the upper plate, the cross plates are connected with the jacks, a circular ring is arranged between the two cross plates, the side wall of the circular ring is fixedly connected with the side walls of the two cross plates through two symmetrically-distributed fixing plates, a top column is connected with the output end of the hydraulic cylinder body, a buffer block is connected with the lower end of the top column, a bushing is arranged on the buffer block, the bushing is arranged in the circular ring and is connected with a buffer mechanism, and the buffer mechanism changes the inclination angle of the top column when the top column contacts a workpiece. The safe frame type hydraulic machine control device can effectively buffer the lateral force generated by the hydraulic machine when the hydraulic machine is in an eccentric state, can adjust and control the angle of absorbing the lateral force according to the workpiece, and effectively protects the power oil cylinder of the hydraulic machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic machines, in particular to a safety frame type hydraulic machine control device. BACKGROUND

[0002] The hydraulic machine is a kind of machinery for processing industrial materials by using liquid static pressure, such as forging, stamping, cold extrusion, straightening, bending, flanging, sheet drawing and powder metallurgy, pressing and forming production of metal plates, and the hydraulic system of the hydraulic machine is relatively simple, mainly including an oil tank, an oil pump, a multi-way control valve, a power oil cylinder and some high-pressure oil pipes, during work, the hydraulic oil in the oil tank is sent into the power oil cylinder from the high-pressure oil pipe after being pressurized by the oil pump, the piston rod in the oil cylinder is stretched out and contacted with the workpiece under the extrusion of the hydraulic oil, then the piston rod is continuously extruded to deform the workpiece under the continuous pressure, finally the workpiece is shaped, such as the hydraulic machine used for forging, stamping, cold extrusion, straightening, bending and flanging, which deforms the workpiece surface by transmitting the hydraulic pressure to the workpiece surface through the piston rod, and finally completes the working operation.

[0003] At present, since the piston rod and the cylinder body need to produce relative displacement, the greater the stroke of the piston rod, especially in the state of partial load of the hydraulic machine, the greater the lateral force and mechanical eccentric wear of the sealing element between the two, which causes the hydraulic cylinder to leak and be damaged. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the defects of the prior art, the present application provides a safety frame type hydraulic machine control device, which has the advantages of effectively buffering the lateral force generated by the hydraulic machine under partial load, adjusting the angle of absorbing the lateral force according to the workpiece, effectively protecting the power oil cylinder of the hydraulic machine, and solving the problem that the greater the stroke of the piston rod, especially in the state of partial load of the hydraulic machine, the greater the lateral force and mechanical eccentric wear of the sealing element between the two, which causes the hydraulic cylinder to leak and be damaged.

[0006] (II) Technical solutions

[0007] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions: a safety frame type hydraulic machine control device, comprising a hydraulic cylinder body, a base, an upper plate and a plurality of top rods, the hydraulic cylinder body is vertically fixed on the side wall of the upper plate, two cross plates are arranged between the base and the upper plate, and the cross plates are connected with the top rods, a circular ring is arranged between the two cross plates, and the side wall of the circular ring is fixedly connected with the side walls of the two cross plates through two symmetrically distributed fixing plates;

[0008] The output end of the hydraulic cylinder body is connected with a jacking post, the lower end of the jacking post is connected with a buffer block, a bushing is installed on the buffer block, the bushing is arranged in a circular ring and is connected with a buffer mechanism, the buffer mechanism changes the inclination angle of the jacking post when the jacking post contacts a workpiece, and the buffer mechanism buffers the lateral force of the jacking post on the hydraulic cylinder body.

[0009] The side wall of the buffer block is connected with an adjusting unit, the adjusting unit is used for changing the inclination angle of the buffer block to make the buffer mechanism produce angular deflection.

[0010] The side wall of the mounting plate is connected with a transmission mechanism, the transmission mechanism is used for driving the buffer mechanism installed on the buffer block to rotate around the jacking post.

[0011] Preferably, the buffer mechanism comprises a bushing, the bushing is arranged in a circular ring, the upper end of the bushing is provided with a flange, the flange is in contact with the upper end edge of the circular ring, the edge of the flange is provided with a mounting plate, the upper end of the flange is provided with a vertical plate on the side opposite to the mounting plate, and the vertical plate and the mounting plate are used for jointly installing the adjusting unit.

[0012] The lower end of the jacking post is fixedly connected with a hemisphere, the upper end of the buffer block is provided with a groove matched with the spherical surface of the hemisphere, the side wall of the buffer block is provided with an arc surface, and the upper end opening edge of the bushing is provided with an inner concave surface matched with the arc surface.

[0013] Preferably, the adjusting unit comprises a double-oil-cylinder, the two piston rods of the double-oil-cylinder are both rotatably connected with a transmission rod through a hinged shaft, the ends of the two transmission rods away from the double-oil-cylinder are both rotatably connected with a horizontal shaft through an axle pin, the shaft wall of the horizontal shaft is fixedly connected with a support arm, the support arm is fixedly connected with the upper end of the buffer block, the side wall of the mounting plate is fixedly connected with two T-shaped blocks, the side walls of the two T-shaped blocks are both connected with a sliding seat, the sliding seat is fixedly connected with the supporting leg of the double-oil-cylinder, the side wall of the sliding seat is fixedly connected with two limiting rods, and the two limiting rods are located on the two sides of the transmission rod.

[0014] Preferably, one end of the support arm is fixedly connected with a positioning shaft, the shaft wall of the positioning shaft is rotatably connected with a positioning rod, the positioning rod is fixedly connected with one side of the vertical plate, one end of the positioning shaft is rotatably connected with an arc-shaped block through a bearing, one side of the arc-shaped block is fixedly connected with an arc-shaped sliding block, the side wall of the jacking post is provided with an annular sliding groove, and the annular sliding groove is slidably connected with the arc-shaped sliding block.

[0015] Preferably, the transmission mechanism comprises a speed reducer motor, the speed reducer motor is fixed at the lower end of the fixed plate through a support, the lower end of the annular ring is provided with a gear ring, the side wall of the gear ring is engaged with a worm, the worm is fixedly connected with the output end of the speed reducer motor, the lower end of the gear ring is fixedly connected with a fixed ring, the fixed ring is fixed on the side wall of the bushing through a plurality of bolts, and the rod wall of the worm is rotatably connected to the lower end of the fixed plate through two bearings.

[0016] Preferably, the upper end edge of the gear ring is provided with an annular groove, the lower end of the annular ring is sleeved with a plurality of uniformly distributed balls through a positioning groove, and the plurality of balls are located in the annular groove.

[0017] Preferably, the side wall of the buffer block is fixedly connected with a positioning ring, the side wall of the positioning ring is provided with a spherical surface, the side wall of the buffer block is sleeved with an upper ring body and a lower ring body, the upper ring body and the lower ring body are fixedly connected through a plurality of bolts, the inner side of the upper ring body is provided with a first concave surface, the inner side of the lower ring body is provided with a second concave surface, the first concave surface and the second concave surface jointly form a contact surface matched with the spherical surface on the positioning ring, and the lower end of the lower ring body is fixedly connected with a pressing plate.

[0018] Preferably, opposite sides of the upper ring body and the lower ring body are provided with through grooves, and the two through grooves jointly form an oil injection hole in communication with the spherical surface.

[0019] Preferably, the plurality of jacks are uniformly fixed at four corners of the base and the upper plate, the side wall of the horizontal plate is fixedly connected with two sliding sleeves, and the sliding sleeves are sleeved with the side wall of the jacks.

[0020] (Three) beneficial effects

[0021] Compared with the prior art, the present application provides a safe frame type hydraulic machine control device, which has the following beneficial effects:

[0022] 1、When the hydraulic cylinder body pushes the top column to move downward, the top column drives the buffer mechanism to move downward, the pressing plate contacts the workpiece placed on the base, the buffer block can produce directional deflection under the adjustment of the adjusting unit, the inclined buffer block can be adjusted, the worm is driven by the speed reducer motor to rotate the gear ring, the gear ring drives the bushing and the buffer mechanism to rotate, and the inclined buffer block can rotate around the top column, so that the inclination angle of the buffer block can be actively adjusted, and when the force direction of the workpiece and the force direction of the hydraulic cylinder body are not on the same axis, the lateral force generated when the workpiece is stressed can be absorbed by the buffer block, and the lateral wear of the piston rod on the cylinder body seal caused by the eccentric load of the hydraulic cylinder body can be reduced.

[0023] 2、The buffer mechanism provided in the application, when the buffer mechanism is stressed, the top column and the hemisphere can be deflected in the groove, and at the same time the buffer block can be deflected on the inner recess surface of the bushing under the action of the adjusting unit, the pressing plate installed at the bottom of the buffer block contacts the surface of the workpiece after the deflection of the buffer block, at this time, the lateral force generated when the top column moves downward can be absorbed by the hemisphere, the buffer block and the contact surface on the bushing, the mechanical eccentric wear of the hydraulic cylinder body seal and the piston rod is reduced, the resistance received by the pressing plate is transmitted to the lower ring body and the upper ring body, and since the upper ring body and the lower ring body are clamped with the positioning ring through the first recess surface and the second recess surface, the pressing plate can be automatically adjusted to be in full contact with the surface of the workpiece when the pressing plate contacts the surface of the workpiece, and further absorption of the lateral force by the pressing plate can be achieved.

[0024] 3、The adjusting unit provided in the application, when the inclination angle of the buffer block needs to be adjusted, the double oil cylinder is started, the double oil cylinder simultaneously pushes the two transmission rods to move, the transmission rod moves to lift the horizontal shaft to swing the supporting arm, the supporting arm swings to tilt the buffer block, and at the same time, the positioning rod installed on the vertical plate cooperates with the positioning shaft to position the buffer block when the buffer block is tilted, and the positioning shaft is clamped with the annular sliding groove through the arc block and the arc-shaped sliding block, thereby the buffer block is connected with the top column, the center point of the groove, the center point of the arc-shaped surface and the center point of the inner recess surface are located at the ball center of the hemisphere, in addition, the ball center of the hemisphere is located at the intersection of the positioning shaft and the top column axis, as shown in the figure, the adjusting unit and the buffer mechanism are both arranged on the bushing, and the buffer mechanism is adjusted to a certain inclination angle by the transmission mechanism after the adjustment of the adjusting unit, so that the buffer mechanism can be adjusted to a suitable angle in advance. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A structure schematic diagram of a safety frame type hydraulic machine control device is proposed for the application;

[0026] Figure 2 A plan view of the safety frame type hydraulic machine control device is proposed for the application; Figure 1

[0027] Figure 3 A structure schematic diagram of a transmission mechanism, an adjusting unit and a buffer mechanism in the safety frame type hydraulic machine control device is proposed for the application;

[0028] Figure 4 A sectional view of the buffer mechanism in the safety frame type hydraulic machine control device is proposed for the application;

[0029] Figure 5 A plan view of the safety frame type hydraulic machine control device is proposed for the application; Figure 4

[0030] ​​Figure 6 A safety type frame hydraulic machine control device buffer block, upper ring body, lower ring body and the structure diagram of the pressing plate structure schematic diagram is proposed in the present application;

[0031] Figure 7 A safety type frame hydraulic machine control device upper ring body, lower ring body and the structure diagram of the pressing plate structure schematic diagram is proposed in the present application;

[0032] Figure 8 A safety type frame hydraulic machine control device bushing, ring and the structure diagram of the gear ring structure schematic diagram is proposed in the present application;

[0033] Figure 9 A safety type frame hydraulic machine control device ring and the structure diagram of the gear ring structure schematic diagram is proposed in the present application.

[0034] In the figure: 1, ring; 2, bushing; 3, ejector rod; 4, sliding sleeve; 5, horizontal plate; 6, top column; 7, upper plate; 8, hydraulic cylinder body; 9, mounting plate; 10, base; 11, pressing plate; 12, gear ring; 13, positioning rod; 14, buffer block; 15, fixed plate; 16, speed reducer motor; 17, support arm; 18, limit rod; 19, transmission rod; 20, horizontal shaft; 21, annular groove; 22, arc block; 23, positioning shaft; 24, arc-shaped slider; 25, worm; 26, slide; 27, T-shaped block; 28, inner concave surface; 29, ball; 30, annular groove; 31, fixed ring; 32, positioning ring; 33, groove; 34, arc surface; 35, upper ring body; 36, lower ring body; 37, first concave surface; 38, second concave surface; 39, through groove; 40, double oil cylinder; 41, hemisphere. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0036] Example 1:

[0037] Referring to the drawings Figures 1-9The application discloses a safe frame type hydraulic machine control device, which comprises a hydraulic cylinder body 8, a base 10, an upper plate 7 and a plurality of top rods 3, the plurality of top rods 3 are uniformly fixed at four corners of the base 10 and the upper plate 7, the lateral wall of a cross plate 5 is fixedly connected with two sliding sleeves 4, the sliding sleeves 4 are sleeved with the lateral wall of the top rods 3, the hydraulic cylinder body 8 is vertically fixed on the lateral wall of the upper plate 7, two cross plates 5 are arranged between the base 10 and the upper plate 7, the cross plates 5 are connected with the top rods 3, a circular ring 1 is arranged between the two cross plates 5, and the lateral wall of the circular ring 1 is fixedly connected with the lateral walls of the two cross plates 5 through two symmetrical fixing plates 15.

[0038] The output end of the hydraulic cylinder body 8 is connected with a top column 6, the lower end of the top column 6 is connected with a buffer block 14, a bushing 2 is arranged on the buffer block 14, the bushing 2 is arranged in the circular ring 1 and is connected with a buffer mechanism, the buffer mechanism changes the inclination angle of the top column 6 when the top column 6 contacts a workpiece, buffers the lateral force of the hydraulic cylinder body 8 by the top column 6, the lateral wall of the buffer block 14 is connected with an adjusting unit, and the adjusting unit is used for changing the inclination angle of the buffer block 14 to make the buffer mechanism produce angular deflection.

[0039] The lateral wall of the mounting plate 9 is connected with a transmission mechanism, the transmission mechanism comprises a speed reducer motor 16, the speed reducer motor 16 is fixed on the lower end of the fixing plate 15 through a support, the lower end of the circular ring 1 is provided with a gear ring 12, the lateral wall of the gear ring 12 is engaged with a worm 25, the worm 25 is fixedly connected with the output end of the speed reducer motor 16, the lower end of the gear ring 12 is fixedly connected with a fixing ring 31, the fixing ring 31 is fixed on the lateral wall of the bushing 2 through a plurality of bolts, the rod wall of the worm 25 is rotatably connected with the lower end of the fixing plate 15 through two bearings, the upper end edge of the gear ring 12 is provided with an annular groove 30, the lower end of the circular ring 1 is sleeved with a plurality of uniformly distributed rolling balls 29 through a positioning groove, the plurality of rolling balls 29 are located in the annular groove 30, and the transmission mechanism is used for driving the buffer mechanism arranged on the buffer block 14 to rotate around the top column 6.

[0040] When the hydraulic cylinder body 8 pushes the top column 6 to move downwards, the top column 6 drives the buffer mechanism to move downwards, the pressing plate 11 contacts the workpiece placed on the base 10 (not shown in the figure) when the buffer mechanism moves downwards, at this moment, the buffer block 14 can produce directional deflection under the adjusting effect of the adjusting unit, the workpiece upper end uneven plane is coped with, the gear ring 12 is rotated by starting the speed reducer motor 16 to drive the worm 25, the bushing 2 and the buffer mechanism are driven to rotate when the gear ring 12 rotates, and then the inclined buffer block 14 can make circular motion around the top column 6, so that the inclination angle of the buffer block 14 can be actively adjusted, so that the lateral force generated when the workpiece is stressed can be absorbed by the buffer block 14 when the stress direction of the workpiece and the force direction of the hydraulic cylinder body 8 are not on the same axis, and then the lateral eccentric wear of the piston rod to the cylinder body sealing element can be reduced when the hydraulic cylinder body 8 works under eccentric load.

[0041] Example 2: The difference from Example 1 is that;

[0042] See attached document Figures 3-9 The buffer mechanism includes a bushing 2, which is set inside the ring 1. The upper end of the bushing 2 is provided with a flange, which contacts the upper edge of the ring 1. An mounting plate 9 is installed at the edge of the flange. A vertical plate is installed on the upper end of the flange on the side symmetrical to the mounting plate 9. The vertical plate and the mounting plate 9 are used together to install the adjustment unit. The lower end of the top column 6 is fixedly connected to a hemisphere 41. The upper end of the buffer block 14 is provided with a groove 33 that matches the spherical surface of the hemisphere 41. The side wall of the buffer block 14 is provided with an arc-shaped surface 34. The upper opening edge of the bushing 2 is provided with an inner concave surface 28 that matches the arc-shaped surface 34.

[0043] A positioning ring 32 is fixedly connected to the side wall of the buffer block 14, and the side wall of the positioning ring 32 has a spherical surface. An upper ring body 35 and a lower ring body 36 are sleeved on the side wall of the buffer block 14. The upper ring body 35 and the lower ring body 36 are fixedly connected by multiple bolts. A first concave surface 37 is opened on the inner side of the upper ring body 35, and a second concave surface 38 is opened on the inner side of the lower ring body 36. The first concave surface 37 and the second concave surface 38 together form a contact surface that matches the spherical surface on the positioning ring 32. A pressure plate 11 is fixedly connected to the lower end of the lower ring body 36. A through groove 39 is opened on the opposite side of the upper ring body 35 and the lower ring body 36. The two through grooves 39 together form an oil injection hole, and the oil injection hole communicates with the spherical surface.

[0044] The buffer mechanism provided in this invention allows the top column 6 and hemisphere 41 to deflect within the groove 33 when subjected to force. Simultaneously, the buffer block 14, under the action of the adjustment unit, deflects on the concave surface 28 of the bushing 2 using the arc surface 34. After deflection, the pressure plate 11 installed at its bottom contacts the workpiece surface. At this time, the contact surfaces of the hemisphere 41, the buffer block 14, and the bushing 2 can be used to absorb the lateral force generated when the top column 6 moves downward, reducing mechanical wear on the seals and piston rod of the hydraulic cylinder body 8. The resistance received by the pressure plate 11 is transmitted to the lower ring 36 and the upper ring 35. Since the upper ring 35 and the lower ring 36 are engaged with the positioning ring 32 through the first concave surface 37 and the second concave surface 38, the pressure plate 11 can automatically adjust to full contact with the workpiece surface when it contacts the workpiece surface, thereby further absorbing the lateral force using the pressure plate 11.

[0045] Example 3: The difference from Example 1 is that;

[0046] See attached document Figures 3-5The adjustment unit includes a double-outlet cylinder 40. The ends of the two piston rods of the double-outlet cylinder 40 are rotatably connected to transmission rods 19 via hinge shafts. The ends of the two transmission rods 19 away from the double-outlet cylinder 40 are rotatably connected to a horizontal shaft 20 via pins. A support arm 17 is fixedly connected to the shaft wall of the horizontal shaft 20, and the support arm 17 is fixedly connected to the upper end of the buffer block 14. Two T-shaped blocks 27 are fixedly connected to the side wall of the mounting plate 9. A slide seat 26 is connected to the side wall of each of the two T-shaped blocks 27. The slide seat 26 is fixedly connected to the support leg of the double-outlet cylinder 40. Two limit rods 18 are fixedly connected to the side wall of the slide seat 26. The two limit rods 18 are located on both sides of the transmission rod 19.

[0047] One end of the support arm 17 is fixedly connected to a positioning shaft 23. A positioning rod 13 is rotatably connected to the shaft wall of the positioning shaft 23. The positioning rod 13 is fixedly connected to one side of the vertical plate. One end of the positioning shaft 23 is rotatably connected to an arc-shaped block 22 through a bearing. An arc-shaped slider 24 is fixedly connected to one side of the arc-shaped block 22. An annular groove 21 is provided on the side wall of the top column 6. The annular groove 21 is slidably connected to the arc-shaped slider 24.

[0048] The present invention is equipped with an adjustment unit that, when the tilt angle of the buffer block 14 needs to be adjusted, activates the double-outlet cylinder 40. The double-outlet cylinder 40 simultaneously pushes two transmission rods 19 to move. When the transmission rods 19 move, they lift the horizontal shaft 20, causing the support arm 17 to swing. When the support arm 17 swings, it causes the buffer block 14 to tilt. At the same time, when the buffer block 14 tilts, the fixed rod 13 and the positioning shaft 23 installed on the vertical plate cooperate to position the buffer block 14. The positioning shaft 23 uses the arc-shaped block 22 and the arc-shaped slider 24 to engage with the annular groove 21, thereby enabling the buffer block 14 to be connected to the top column 6. This ensures that the center point of the groove 33, the center point of the arc-shaped surface 34, and the center point of the concave surface 28 are all located at the center of the hemisphere 41. In addition, the center of the hemisphere 41 is located at the intersection of the positioning shaft 23 and the axis of the top column 6. Figure 3 As shown, both the adjustment unit and the buffer mechanism are mounted on the bushing 2. After the adjustment unit adjusts the buffer mechanism to a certain tilt angle, it is driven by the transmission mechanism. This allows the buffer mechanism to be pre-adjusted to a suitable angle so that the hemisphere 41 deflects within the groove 33 before the stamping operation. This avoids jamming between the arc block 22 and the arc groove 24, i.e., the hemisphere 41 does not swing around the center line of the set positioning shaft 23, which would damage the control device. However, if the buffer block 14 is pre-adjusted to a suitable tilt angle by the transmission mechanism and the adjustment unit during use, the jamming and damage to the device will not occur.

[0049] In the appendix Figure 5In the diagram, dashed line A is the axis of positioning shaft 23, dashed line B is the line connecting the side of one of the grooves to the center point, dashed line C is the axis of top column 6, dashed line D is the line connecting one of the arc surface 34 and the concave surface 28 to the center point, and the intersection of dashed lines AD is the center of hemisphere 41.

[0050] It should be noted that the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety frame type hydraulic press control device comprising a hydraulic cylinder body (8), a base (10), an upper plate (7) and a plurality of ejector rods (3), the hydraulic cylinder body (8) being vertically fixed to the side wall of the upper plate (7), characterized in that: Two horizontal plates (5) are arranged between the base (10) and the upper plate (7), and the horizontal plates (5) are connected with the top rod (3), a circular ring (1) is arranged between the two horizontal plates (5), and the side wall of the circular ring (1) is fixedly connected with the side walls of the two horizontal plates (5) through two symmetrically distributed fixing plates (15); The output end of the hydraulic cylinder body (8) is connected with a top column (6), the lower end of the top column (6) is connected with a buffer block (14), a bushing (2) is arranged on the buffer block (14) and connected with a buffer mechanism, the buffer mechanism comprises a flange arranged on the upper end of the bushing (2), the flange is in contact with the upper end edge of the circular ring (1), an installation plate (9) is arranged on the edge of the flange, a vertical plate is arranged on the side of the flange opposite to the installation plate (9), and the vertical plate and the installation plate (9) are used for jointly installing an adjusting unit; The lower end of the top column (6) is fixedly connected with a hemispherical body (41), the upper end of the buffer block (14) is provided with a groove (33) matched with the spherical surface of the hemispherical body (41), the side wall of the buffer block (14) is provided with an arc surface (34), and the upper end opening edge of the bushing (2) is provided with an inner concave surface (28) matched with the arc surface (34); the buffer mechanism changes the inclination angle of the top column (6) when the top column (6) contacts the workpiece, and the lateral force of the buffer mechanism on the hydraulic cylinder body (8) is buffered; The side wall of the buffer block (14) is connected with an adjusting unit, and the adjusting unit is used for changing the inclination angle of the buffer block (14) to make the buffer mechanism produce angular deflection; The side wall of the installation plate (9) is connected with a transmission mechanism, and the transmission mechanism is used for driving the buffer mechanism arranged on the buffer block (14) to rotate around the top column (6) as the shaft.

2. A safety frame type hydraulic press control apparatus according to claim 1, wherein: The adjusting unit comprises a double-oil-cylinder (40), the two piston rods of the double-oil-cylinder (40) are rotatably connected with transmission rods (19) through hinge shafts, the ends, away from the double-oil-cylinder (40), of the two transmission rods (19) are rotatably connected with horizontal shafts (20) through shaft pins, the shaft wall of the horizontal shaft (20) is fixedly connected with a support arm (17), the support arm (17) is fixedly connected with the upper end of the buffer block (14), the side wall of the installation plate (9) is fixedly connected with two T-shaped blocks (27), the side walls of the two T-shaped blocks (27) are connected with sliding seats (26), the sliding seats (26) are fixedly connected with the supporting legs of the double-oil-cylinder (40), the side wall of the sliding seat (26) is fixedly connected with two limiting rods (18), and the two limiting rods (18) are located on the two sides of the transmission rod (19) respectively.

3. The safety frame type hydraulic machine control apparatus according to claim 2, characterized by: One end of the branch (17) is fixedly connected with a positioning shaft (23), a shaft wall of the positioning shaft (23) is rotatably connected with a positioning rod (13), one side of the positioning rod (13) is fixedly connected with a vertical plate, one end of the positioning shaft (23) is rotatably connected with an arc block (22) through a bearing, one side of the arc block (22) is fixedly connected with an arc-shaped sliding block (24), and a side wall of the top column (6) is provided with an annular sliding groove (21), and the annular sliding groove (21) is slidably connected with the arc-shaped sliding block (24).

4. The safety frame type hydraulic machine control apparatus according to claim 1, characterized by: The transmission mechanism comprises a speed reducer motor (16), the speed reducer motor (16) is fixed at the lower end of the fixed plate (15) through a support, the lower end of the circular ring (1) is provided with a gear ring (12), the side wall of the gear ring (12) is engaged with a worm (25), the worm (25) is fixedly connected with the output end of the speed reducer motor (16), the lower end of the gear ring (12) is fixedly connected with a fixed ring (31), the fixed ring (31) is fixed on the side wall of the bushing (2) through a plurality of bolts, and the rod wall of the worm (25) is rotatably connected at the lower end of the fixed plate (15) through two bearings.

5. The safety frame type hydraulic machine control apparatus according to claim 4, characterized by: An annular groove (30) is formed at the upper end edge of the gear ring (12), a plurality of uniformly distributed ball bearings (29) are sleeved on the lower end of the circular ring (1) through positioning grooves, and the plurality of ball bearings (29) are located in the annular groove (30).

6. The safety frame type hydraulic machine control apparatus according to claim 1, characterized by: The side wall of the buffer block (14) is fixedly connected with a positioning ring (32), a spherical surface is formed in the side wall of the positioning ring (32), the side wall of the buffer block (14) is sleeved with an upper ring body (35) and a lower ring body (36), the upper ring body (35) and the lower ring body (36) are fixedly connected through a plurality of bolts, a first concave surface (37) is formed in the inner side of the upper ring body (35), a second concave surface (38) is formed in the inner side of the lower ring body (36), the first concave surface (37) and the second concave surface (38) jointly form a contact surface matched with the spherical surface on the positioning ring (32), and the lower end of the lower ring body (36) is fixedly connected with a pressing plate (11).

7. A safety frame type hydraulic press control apparatus according to claim 6, wherein: Opposite sides of the upper ring body (35) and the lower ring body (36) are both provided with through grooves (39), the two through grooves (39) jointly form an oil injection hole, and the oil injection hole is in communication with the spherical surface.

8. The safety frame type hydraulic machine control apparatus according to claim 1, characterized by: A plurality of the top rods (3) are uniformly fixed at the four corners of the base (10) and the upper plate (7), and the side wall of the horizontal plate (5) is fixedly connected with two sliding sleeves (4), and the sliding sleeves (4) are sleeved with the side wall of the top rod (3).

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