Servo driven pendulum shearing machine

Abstract

The utility model discloses a kind of swing plate shearing machines of servo drive, including rack assembly, swing mechanism, plate shearing mechanism and lifting mechanism.Rack assembly contains the rack box body and top plate of fixed connection;Swing mechanism drives rotating main shaft by servo motor, reducer and gear transmission, drives plate shearing mechanism overall angle deflection;In plate shearing mechanism, servo motor and reducer drive eccentric shaft rotation, rotate motion is converted into the linear reciprocating motion of upper tool holder along guide pillar by connecting rod, cooperate lower tool holder to realize shearing.Lower tool holder is matched with adjusting device, and the gap between tool edges can be finely adjusted;Pressure device is arranged to stabilize material, and universal ball of feeding plate is used to assist feeding.Lifting mechanism realizes four-corner synchronous lifting through chain transmission, and is suitable for different incoming material height.The present application replaces hydraulic transmission with mechanical hard link, improves response speed and shearing accuracy, and is stable in structure, convenient to adjust, suitable for multi-scene plate processing, and reduces energy consumption and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal shearing technology, and in particular to a servo-driven swing beam shearing machine with high-precision shearing and multi-angle shearing capabilities. Background Technology

[0002] As a key piece of equipment in the metal sheet processing field, the swing beam shearing machine is widely used in industries such as machinery manufacturing, automotive parts production, and construction decoration. Its core function is to achieve precise cutting of sheet metal through the relative movement of upper and lower shear blades. Currently, most mainstream swing beam shearing machines on the market use hydraulic drive; however, this type of equipment has several technical challenges in practical applications. Firstly, the hydraulic transmission system has an inherent response delay problem, which makes it difficult to control the motion accuracy of the upper tool holder. Especially in high-precision sheet metal processing scenarios, quality defects such as shearing size deviation and excessive burrs are prone to occur. Secondly, the hydraulic system has strict sealing requirements. After long-term use, oil leakage is prone to occur, which not only pollutes the working environment, but also further affects the transmission stability and equipment lifespan. Third, the blade gap adjustment mechanism of traditional equipment is mostly a coarse design, which cannot achieve precise fine adjustment and is difficult to adapt to the shearing needs of plates of different thicknesses and materials, resulting in limited equipment versatility. Fourth, the existing equipment's shearing mechanism has insufficient swing angle control precision and lacks a stable auxiliary support structure, which easily generates vibration in medium- and high-speed heavy-duty shearing scenarios, further reducing shearing precision. At the same time, some equipment does not have an adjustment mechanism adapted to different material heights, or the adjustment mechanism has poor synchronization, affecting processing efficiency and ease of operation.

[0003] In addition, hydraulic drive equipment has high energy consumption and high maintenance costs, making it difficult to meet the needs of modern manufacturing for efficient, energy-saving, and high-precision processing equipment.

[0004] Therefore, developing a swing beam shearing machine with precise transmission, rapid response, convenient adjustment, and stable structure has become an urgent technical problem to be solved in this field. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this utility model aims to provide a technical solution that can solve the above problems.

[0006] This utility model provides a servo-driven swing beam shearing machine, comprising: The rack assembly includes a fixed rack housing and a rack top plate. The swing mechanism includes a rotating device and a swing actuator, which are respectively assembled on the frame assembly. The output end of the swing actuator is drivenly connected to the rotating main shaft of the rotating device. The shearing mechanism includes a shearing base, a shearing guide post, a shearing beam, a lower blade holder, and an upper blade holder; the shearing base, shearing guide post, and shearing beam are fixedly connected to form a frame structure; the shearing base is fixedly connected to the rotating spindle; the lower blade holder is assembled on the shearing base, and the upper blade holder is slidably connected to the shearing guide post, and the upper blade holder and the lower blade holder are respectively provided with an upper shearing blade and a lower shearing blade for shearing. The shearing mechanism also includes a shearing actuator, an eccentric assembly, and a connecting device. The shearing actuator is fixed to the shearing beam, and the output end of the shearing actuator is driven to the eccentric shaft of the eccentric assembly, which is rotatably connected to the shearing beam. One end of the connecting device is rotatably connected to the eccentric shaft, and the other end is rotatably connected to the upper blade holder.

[0007] Furthermore: the shearing actuator includes a shearing motor and a shearing reducer, the shearing reducer being connected to the shearing motor and the eccentric assembly respectively; the shearing beam includes two vertical plates and a horizontal plate connecting the two vertical plates, and the two ends of the eccentric shaft are rotatably connected to the two vertical plates through the first bearing respectively.

[0008] Furthermore: the connecting device includes a connecting rod, one end of which is provided with a first shaft hole, which is sleeved on the eccentric part of the eccentric shaft through a bearing; the other end of the connecting rod is provided with a second shaft hole, in which a second rotating shaft is fitted, and the second rotating shaft is rotatably connected to the upper tool holder through a bearing.

[0009] Furthermore, the shearing mechanism is also equipped with a pressing device, which includes a pressing cylinder installed on the shearing beam and a pressing plate connected to the output end of the pressing cylinder.

[0010] Furthermore, it also includes an adjustment device, which is equipped with a guide screw, a guide spring, a spring nut, an adjustment bolt, a guide plate, and an adjustment plate. The lower blade holder is slidably connected to the shear plate base in a direction perpendicular to the shearing plane. The guide plate and the adjustment plate are respectively fixed to both sides of the lower blade holder. One end of the guide screw is fixed to the side of the lower blade holder facing the guide plate, and the other end of the guide screw passes through the guide plate. The guide spring is sleeved on the free end of the guide screw, and the spring nut is fixed to the free end of the guide screw through a threaded structure to limit the guide spring. The elastic force of the guide spring drives the lower blade holder to move in the direction of the guide plate. The adjustment bolt passes through the adjustment plate and forms a threaded connection with the side of the lower blade holder facing the adjustment plate.

[0011] Furthermore: the oscillating actuator includes an oscillating motor, an oscillating reducer, and an oscillating main gear, which is driven by the oscillating motor; an oscillating driven gear is fixed on the rotating main shaft, and the oscillating driven gear meshes with the oscillating main gear; a wear-resistant block seat and an oscillating wear-resistant block are also provided between the top plate of the frame and the shear plate base for sliding cooperation.

[0012] Furthermore: the rotating device includes a rotating bushing fixed to the top plate of the frame, and the rotating main shaft is rotatably mounted on the rotating bushing via a rotating bearing; a flat support bearing is also fitted on the rotating main shaft, the flat support bearing being located between the stepped portion of the rotating main shaft and the rotating bushing, for bearing axial load.

[0013] Furthermore, it also includes a lifting mechanism, which includes a lifting actuator, a lifting screw, and a lifting nut; the lifting screw is rotatably connected to the frame base, and the lifting nut is fixed to the frame housing and threadedly engaged with the lifting screw; the lifting actuator drives the lifting screw to rotate, thereby driving the frame housing to rise and fall.

[0014] Furthermore, the lifting actuator includes a lifting motor, a reducer, a main sprocket, a transmission chain, and slave sprockets fixed to each lifting screw; the main sprocket drives each slave sprocket to rotate simultaneously through the transmission chain.

[0015] Furthermore, the lifting mechanism also includes a support column fixed to the base of the frame and a support block fixed to the frame housing. The support block and the support column are connected in a detachable manner by fasteners.

[0016] Compared with the prior art, the beneficial effects of this utility model are: ① Significantly improved transmission accuracy and response speed: The mechanical hard link transmission scheme of servo motor + eccentric component is adopted to replace the traditional hydraulic transmission, which completely solves the problem of response delay in hydraulic system. The linear reciprocating motion of the upper tool holder is more accurate, the shearing size error is greatly reduced, and the cut quality is better. At the same time, the servo motor and precision reducer can realize precise control of power output to adapt to different shearing speed requirements.

[0017] ② Precise and flexible blade gap adjustment: Through the combination structure of guide screw, guide spring and adjusting bolt, the blade gap of the upper and lower shearing blades can be finely adjusted to adapt to the shearing requirements of plates of different thicknesses and materials, effectively improving the versatility of the equipment and reducing shearing defects caused by improper gap.

[0018] ③ Enhanced structural stability and load-bearing capacity: The rotating device is equipped with a planar support bearing to bear the axial load, the swing mechanism adopts helical gear meshing transmission and is supported by wear-resistant blocks, and the lifting mechanism achieves synchronous lifting at four corners through chain transmission. During operation, the support column provides rigid support to jointly resist shear vibration, which greatly improves the operating stability and service life of the equipment in medium and high speed heavy load scenarios.

[0019] ④ Optimization of operation and processing efficiency: The pressing device is driven by a cylinder and guided by a guide column to ensure that the sheet material is firmly pressed during shearing and to avoid slippage; the feed plate is equipped with a universal ball to guide the sheet material to feed smoothly, and the discharge side can be used with a conveyor to achieve continuous processing; the lifting mechanism can quickly adapt to different material heights and the adjustment process is highly synchronous, which significantly reduces the difficulty of operation and improves processing efficiency.

[0020] ⑤ Energy saving, environmental protection and reduced maintenance costs: Compared with hydraulic transmission, mechanical transmission does not require a complex oil circulation system, avoiding oil leakage and pollution, and has lower energy consumption; key moving parts use self-lubricating bearings, reducing the frequency of lubrication and maintenance, and reducing the long-term use cost of equipment.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram of the support column and frame base of this utility model; Figure 3 This is a schematic diagram of the connecting rod and eccentric shaft of this utility model; Figure 4 This is a structural schematic diagram of the shearing beam and pressing device of this utility model; Figure 5 This is a schematic diagram of the lower blade holder and adjustment device of this utility model; Figure 6 This is a schematic diagram of the swing mechanism and shear plate base of this utility model; Figure 7 This is a schematic diagram of the structure of the present invention, showing the support bearing and the rotating spindle separated from each other. Figure 8 This is a schematic diagram of the structure of the swing gear and the shear plate base of this utility model; Figure 9 This is a structural schematic diagram of the frame base and lifting mechanism of this utility model.

[0024] The reference numerals and names in the figure are as follows: 10 Frame assembly; 11 Frame base; 12 Support column; 13 Frame housing; 14 Frame top plate; 20 Swing mechanism; 21 Swing actuator; 22 Swing main gear; 23 Rotary bushing; 24 Support bearing; 25 Rotary spindle; 26 Swing driven gear; 27 Auxiliary gear; 30 Shearing mechanism; 31 Shearing base; 32 Shearing guide column; 33 Shearing beam; 34 Upper knife holder; 35 Knife holder guide sleeve; 36 Lower knife holder; 37 Feed plate; 38 Conveyor; 40 Shearing actuator; 41 Offset 42 Eccentric shaft; 43 First bearing; 44 Connecting rod; 45 First shaft hole; 46 Second rotating shaft; 50 Pressing device; 51 Pressing cylinder; 52 Pressing plate; 53 Pressing guide post; 60 Adjusting device; 61 Guide screw; 62 Guide spring; 63 Spring nut; 64 Adjusting bolt; 65 Guide plate; 66 Adjusting plate; 70 Lifting mechanism; 71 Lifting actuator; 72 Main sprocket; 73 Driven sprocket; 74 Lifting screw; 75 Lifting nut; 76 Guide post; 77 Guide sleeve. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Please see Figures 1 to 9 In this embodiment of the utility model, a servo-driven swing beam shearing machine is characterized by comprising: The rack assembly 10 is provided with a fixed rack housing 13 and a rack top plate 14; The swing mechanism 20 includes a rotating device and a swing actuator 21. The rotating device and the swing actuator 21 are respectively assembled on the frame assembly 10. The output end of the swing actuator 21 is connected to the rotating main shaft 25 of the rotating device. The shearing mechanism 30 includes a shearing base 31, a shearing guide post 32, a shearing beam 33, a lower blade holder 36, and an upper blade holder 34; the shearing base 31, the shearing guide post 32, and the shearing beam 33 are fixedly connected to form a frame structure; the shearing base 31 is fixedly connected to the rotating spindle 25; the lower blade holder 36 is assembled on the shearing base 31, and the upper blade holder 34 is slidably connected to the shearing guide post 32, and the upper blade holder 34 and the lower blade holder 36 are respectively provided with an upper shearing blade and a lower shearing blade for shearing. The shearing mechanism 30 is also provided with a shearing actuator 40, an eccentric assembly 41, and a connecting device; the shearing actuator 40 is fixedly connected to the shearing beam 33, and the output end of the shearing actuator 40 is drivenly connected to the eccentric shaft 42 of the eccentric assembly 41, and the eccentric shaft 42 is rotatably connected to the shearing beam 33; one end of the connecting device is rotatably connected to the eccentric shaft 42, and the other end is rotatably connected to the upper blade holder 34.

[0027] Specifically, addressing the issues of low shearing accuracy and hydraulic system response delay in existing hydraulic swing beam shearing machines, this embodiment provides a mechanical transmission solution. As shown in the figure, the shearing actuator 40 preferably employs a combination of a servo motor and a worm gear reducer to provide stable rotational power. This power drives the eccentric shaft 42 to rotate on the shearing beam 33. Utilizing the eccentricity design of the eccentric shaft 42, the rotational motion of the eccentric shaft 42 is converted into the linear reciprocating motion of the upper blade holder 34 along the shearing guide post 32 via a connecting device. This hard-linked mechanical transmission method (servo motor + eccentric component 41) significantly improves the response speed and motion accuracy of the upper shearing blade compared to hydraulic transmission. Simultaneously, the swing actuator 21 drives the rotating spindle 25 to rotate, causing the entire shearing mechanism 30 (including the shearing base 31, guide post, and beam) to undergo an overall angular deflection, thereby fulfilling the shearing requirements of different angles for the workpiece.

[0028] like Figures 1 to 3 As shown, preferably, the shearing actuator 40 includes a shearing motor and a shearing reducer, with the shearing reducer connecting the shearing motor and the eccentric assembly 41 respectively; the shearing beam 33 includes two vertical plates and a horizontal plate connecting the two vertical plates, with both ends of the eccentric shaft 42 rotatably connected to the two vertical plates via the first bearing 43 respectively.

[0029] Specifically, the shear reducer is fixed to the shear beam 33 via a mounting base, and the shear motor (preferably a servo motor) is directly connected to the reducer via a flange. The reducer can be an RV series worm gear reducer (such as NMRV130), utilizing its large speed ratio (7.5-100) and high torque characteristics to ensure shearing force. The first bearing 43 preferably uses a self-aligning roller bearing to accommodate the self-aligning requirements of the eccentric shaft 42. A receiving space is formed between the two vertical plates of the shear beam 33, and the eccentric part of the eccentric shaft 42 is located within this space. Connecting devices pass through through holes in the horizontal plates and connect to the eccentric part.

[0030] like Figures 3 to 4 As shown, preferably, the connecting device includes a connecting rod 44, one end of which is provided with a first shaft hole 45, which is sleeved on the eccentric part of the eccentric shaft 42 through a bearing; the other end of the connecting rod 44 is provided with a second shaft hole, in which a second rotating shaft 46 is fitted, and the second rotating shaft 46 is rotatably connected to the upper tool holder 34 through a bearing.

[0031] Specifically, to convert rotation into vertical motion and reduce friction, solid-inserted lubricated bearings (such as ZTOM50) are installed in the shaft holes at both ends of the connecting rod 44. The upper cutter holder 34 has a hole at the position corresponding to the second rotating shaft 46, and is connected to the lower end of the connecting rod 44 through the second rotating shaft 46. In addition, the upper cutter holder 34 has a cutter holder guide sleeve 35 at the part that mates with the shearing guide post 32. The guide sleeve is also equipped with a solid-inserted lubricated bearing to ensure the smooth sliding of the upper cutter holder 34 along the guide post.

[0032] like Figure 1 and Figure 4 As shown, preferably, the shearing mechanism 30 is further provided with a pressing device 50, which includes a pressing cylinder 51 installed on the shearing beam 33 and a pressing plate 52 connected to the output end of the pressing cylinder 51.

[0033] Specifically, the pressing device 50 is located on the feeding side of the shearing mechanism 30. To prevent the pressing plate 52 from deflecting during lifting and lowering, a guide column flange plate is installed at the piston end of the pressing cylinder 51. Self-lubricating bearings and pressing guide columns 53 are installed at both ends of the flange plate. One end of the pressing guide column 53 is fixed to the pressing plate 52, and the other end slides in the bearing. With the help of the cylinder drive, it ensures that the material is firmly pressed onto the lower blade holder 36 at the moment of shearing.

[0034] like Figure 1 and Figure 5 As shown, preferably, it also includes an adjustment device 60, which is provided with a guide screw 61, a guide spring 62, a spring nut 63, an adjustment bolt 64, a guide plate 65, and an adjustment plate 66. The lower cutter holder 36 is slidably connected to the shear plate base 31 in a direction perpendicular to the shearing plane. The guide plate 65 and the adjustment plate 66 are respectively fixed to both sides of the lower cutter holder 36. One end of the guide screw 61 is fixed to the side of the lower cutter holder 36 facing the guide plate 65, and the other end of the guide screw 61 passes through the guide plate 65. The guide spring 62 is sleeved on the free end of the guide screw 61, and the spring nut 63 is fixed to the free end of the guide screw 61 through a threaded structure to limit the guide spring 62. The elastic force of the guide spring 62 drives the lower cutter holder 36 to move in the direction of the guide plate 65. The adjustment bolt 64 passes through the adjustment plate 66 and forms a threaded connection with the side of the lower cutter holder 36 facing the adjustment plate 66.

[0035] Specifically, the adjusting device 60 is used to precisely adjust the blade gap between the upper and lower shear blades. The guide spring 62 is preferably a rectangular spring, whose strong elastic force drives the lower blade holder 36 to move away from the upper blade holder 34 (i.e., towards the guide plate 65). By adjusting the adjusting bolt 64 on the other side, the position of the lower blade holder 36 relative to the adjusting plate 66 can be precisely adjusted and locked, thereby fixing the blade gap. To make the movement of the lower blade holder 36 more smooth and stable along the direction perpendicular to the shearing, a guide strip is provided at the bottom of the lower blade holder 36, and a guide groove is provided on the upper part of the shear base 31 corresponding to the guide strip. The guide strip and the guide groove cooperate with each other, allowing the lower blade holder 36 to be reliably slidably connected to the shear base 31. In addition, an inlet plate 37 is provided on the side of the lower blade holder 36 facing the material direction. Multiple butterfly-shaped stainless steel universal balls can be evenly distributed on the inlet plate 37 to guide and support the smooth movement of the material. The discharge side can be used in conjunction with a conveyor 38 to improve processing efficiency.

[0036] like Figure 1 and Figure 6 As shown, preferably, the swing actuator 21 includes a swing motor, a swing reducer and a swing main gear 22, the swing main gear 22 being driven by the swing motor; a swing driven gear 26 is fixed on the rotating main shaft 25, the swing driven gear 26 meshing with the swing main gear 22; a wear-resistant block seat and a swing wear-resistant block are also provided between the frame top plate 14 and the shear plate base 31 for sliding cooperation.

[0037] Specifically, a swing motor (such as an MS1-R servo) is used in conjunction with a precision planetary reducer (AE / AER series) to achieve precise angle control. The gear transmission uses helical gear meshing (e.g., 23 teeth for the main gear, 105 teeth for the driven gear, 40° helix angle) to adapt to medium- and high-speed heavy-load scenarios. To balance the gear meshing force, an auxiliary gear 27 can be set on the other side. At the same time, wear-resistant block seats are set at both ends of the top plate 14 of the frame to support the wear-resistant blocks at the bottom of the shear base 31, providing auxiliary support and sliding guidance for the suspended shear mechanism 30.

[0038] like Figure 1 and Figure 7 As shown, preferably, the rotating device includes a rotating bushing 23 fixed to the top plate 14 of the frame, and a rotating main shaft 25 rotatably passes through the rotating bushing 23 via a rotating bearing; a planar support bearing 24 is also sleeved on the rotating main shaft 25, and the planar support bearing 24 is located between the stepped part of the rotating main shaft 25 and the rotating bushing 23, for bearing axial load.

[0039] Specifically, a deep groove ball bearing is fitted inside the rotating bushing 23 to provide radial support. Considering the large overall weight of the shearing mechanism 30, a support bearing 24 (such as an 81128TN single-direction single-row cylindrical roller thrust bearing) is specially set between the rotating spindle 25 and the bushing. The step position directly transmits gravity and impact loads, which greatly improves the service life and stability of the rotating mechanism.

[0040] like Figure 1 and Figure 9 As shown, preferably, it also includes a lifting mechanism 70, which includes a lifting actuator 71, a lifting screw 74, and a lifting nut 75; the lifting screw 74 is rotatably connected to the frame base 11, and the lifting nut 75 is fixed to the frame housing 13 and threadedly engaged with the lifting screw 74; the lifting actuator 71 drives the lifting screw 74 to rotate, thereby driving the frame housing 13 to rise and fall.

[0041] Specifically, the lifting mechanism 70 is designed to accommodate materials of varying heights. Four sets of lifting screws 74 are located at the four corners of the frame base 11, and corresponding lifting nuts 75 are located on the frame housing 13. To ensure smooth lifting, lifting guide columns 76 and lifting guide sleeves 77 equipped with self-lubricating oil-impregnated bearings are also provided.

[0042] like Figure 9 As shown, preferably, the lifting actuator 71 includes a lifting motor, a reducer, a main sprocket 72, a transmission chain, and slave sprockets 73 respectively fixed to each lifting screw 74; the main sprocket 72 drives each slave sprocket 73 to rotate simultaneously through the transmission chain.

[0043] Specifically, a chain drive system is used to achieve synchronous lifting at all four corners. The lifting motor, after being reduced in speed by a worm gear reducer, drives the main sprocket 72. The main sprocket 72 then drives four slave sprockets 73 to rotate synchronously via a transmission chain, thereby driving the four lead screws to work synchronously. A tensioning pulley can be installed in the system to eliminate chain slack.

[0044] like Figure 1 and Figure 2 As shown, preferably, the lifting mechanism 70 further includes a support column 12 fixed to the frame base 11 and a support block fixed to the frame housing 13, and the support block and the support column 12 are detachably fixedly connected by fasteners.

[0045] Specifically, the lead screw is mainly used for lifting and adjusting. However, when the equipment is working, it needs more rigid support to withstand the huge shear vibration. When adjusting the height, first loosen the support bolts connecting the support block and the support column 12; after adjusting to the correct position, tighten the support bolts again so that the load of the frame housing 13 is borne by the support column 12, thereby improving the overall structural rigidity.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A servo-driven swing beam shearing machine, characterized in that, include: The rack assembly (10) is provided with a fixed rack housing (13) and a rack top plate (14). The swing mechanism (20) includes a rotating device and a swing actuator (21). The rotating device and the swing actuator (21) are respectively assembled on the frame assembly (10). The output end of the swing actuator (21) is connected to the rotating main shaft (25) of the rotating device. The shearing mechanism (30) includes a shearing base (31), a shearing guide column (32), a shearing beam (33), a lower blade holder (36), and an upper blade holder (34); the shearing base (31), the shearing guide column (32), and the shearing beam (33) are fixedly connected to form a frame structure; the shearing base (31) is fixedly connected to the rotating spindle (25); the lower blade holder (36) is assembled on the shearing base (31), and the upper blade holder (34) is slidably connected to the shearing guide column (32), and the upper blade holder (34) and the lower blade holder (36) are respectively provided with an upper shearing blade and a lower shearing blade for shearing; The shearing mechanism (30) is also provided with a shearing actuator (40), an eccentric assembly (41) and a connecting device; the shearing actuator (40) is fixed to the shearing beam (33), and the output end of the shearing actuator (40) is driven to the eccentric shaft (42) of the eccentric assembly (41), and the eccentric shaft (42) is rotatably connected to the shearing beam (33); one end of the connecting device is rotatably connected to the eccentric shaft (42), and the other end is rotatably connected to the upper blade holder (34).

2. The servo-driven swing beam shearing machine according to claim 1, characterized in that, The shearing actuator (40) includes a shearing motor and a shearing reducer. The shearing reducer is connected to the shearing motor and the eccentric assembly (41) respectively. The shearing beam (33) includes two vertical plates and a horizontal plate connecting the two vertical plates. The two ends of the eccentric shaft (42) are rotatably connected to the two vertical plates through the first bearing (43).

3. The servo-driven swing beam shearing machine according to claim 1, characterized in that, The connecting device includes a connecting rod (44), one end of which is provided with a first shaft hole (45), which is sleeved on the eccentric part of the eccentric shaft (42) through a bearing; the other end of the connecting rod (44) is provided with a second shaft hole, in which a second rotating shaft (46) is fitted, and the second rotating shaft (46) is rotatably connected to the upper tool holder (34) through a bearing.

4. The servo-driven swing beam shearing machine according to claim 1, characterized in that, The shearing mechanism (30) is also provided with a pressing device (50), which includes a pressing cylinder (51) installed on the shearing beam (33) and a pressing plate (52) connected to the output end of the pressing cylinder (51).

5. The servo-driven swing beam shearing machine according to claim 1, characterized in that, It also includes an adjustment device (60), which is provided with a guide screw (61), a guide spring (62), a spring nut (63), an adjustment bolt (64), a guide plate (65), and an adjustment plate (66). The lower blade holder (36) is slidably connected to the shear plate base (31) in a direction perpendicular to the shearing plane. The guide plate (65) and the adjustment plate (66) are respectively fixed to both sides of the lower blade holder (36). One end of the guide screw (61) is fixed to one side of the lower blade holder (36) facing the guide plate (65). The other end of the guide screw (61) is fitted with a guide plate (65); the guide spring (62) is sleeved on the free end of the guide screw (61), and the spring nut (63) is fixed to the free end of the guide screw (61) through a threaded structure to limit the guide spring (62). The elastic force of the guide spring (62) drives the lower tool holder (36) to move in the direction of the guide plate (65); the adjusting bolt (64) is fitted on the adjusting plate (66) and forms a threaded connection with the side of the lower tool holder (36) facing the adjusting plate (66).

6. The servo-driven swing beam shearing machine according to claim 1, characterized in that, The swing actuator (21) includes a swing motor, a swing reducer and a swing main gear (22), which is driven by the swing motor; a swing driven gear (26) is fixed on the rotating main shaft (25), and the swing driven gear (26) meshes with the swing main gear (22); a wear-resistant block seat and a swing wear-resistant block are also provided between the frame top plate (14) and the shear plate base (31) for sliding cooperation.

7. The servo-driven swing beam shearing machine according to claim 1, characterized in that, The rotating device includes a rotating bushing (23) fixed to the top plate (14) of the frame, and a rotating main shaft (25) is rotatably mounted on the rotating bushing (23) via a rotating bearing; a flat support bearing (24) is also mounted on the rotating main shaft (25), and the flat support bearing (24) is located between the stepped part of the rotating main shaft (25) and the rotating bushing (23) to bear axial load.

8. The servo-driven swing beam shearing machine according to claim 1, characterized in that, It also includes a lifting mechanism (70), which includes a lifting actuator (71), a lifting screw (74) and a lifting nut (75); the lifting screw (74) is rotatably connected to the frame base (11), and the lifting nut (75) is fixed to the frame housing (13) and threadedly engaged with the lifting screw (74); the lifting actuator (71) drives the lifting screw (74) to rotate, thereby driving the frame housing (13) to rise and fall.

9. The servo-driven swing beam shearing machine according to claim 8, characterized in that, The lifting actuator (71) includes a lifting motor, a reducer, a main sprocket (72), a transmission chain, and slave sprockets (73) respectively fixed to each lifting screw (74); the main sprocket (72) drives each slave sprocket (73) to rotate simultaneously through the transmission chain.

10. The servo-driven swing beam shearing machine according to claim 8, characterized in that, The lifting mechanism (70) also includes a support column (12) fixed to the frame base (11) and a support block fixed to the frame housing (13), and the support block and the support column (12) are connected by fasteners to form a detachable fixed connection.

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