A synchronous swing shear device special for thick plate

Abstract

This invention discloses a synchronous rocking shear device for thick plates, comprising: a frame; two sets of rocking shear mechanisms, each set including a support frame, a transmission frame, an elastic transmission mechanism, and a shear mechanism; a drive linkage structure with a variable radius mechanism within it; a first adjustable displacement mechanism and a second adjustable displacement mechanism mounted on the frame, and a pre-marking module assembled with the execution end of the first adjustable displacement mechanism; a pressure roller assembly mounted on the execution end of the second adjustable displacement mechanism; and a control module. This invention achieves oscillating shearing by using two sets of staggered rocking shear mechanisms in conjunction with a variable radius drive, combined with the coordinated positioning of the pre-marking module and the pressure roller assembly, and utilizing the adjustable displacement mechanism to acquire displacement sensing data for closed-loop adjustment of the shearing stroke, thus realizing adaptive, long-life shearing of thick plates.

Description

Technical Field

[0001] This invention relates to the field of thick plate shearing technology, specifically a synchronous rocking shear device for thick plates. Background Technology

[0002] Currently, conventional thick plate shearing devices mainly use hydraulic guillotine shearing machines or swing beam shearing machines. These devices have the following inherent defects during operation: First, the traditional straight-up-down shearing mode concentrates the impact load at the moment of blade insertion, resulting in high shear resistance; Secondly, existing thick plate shearing equipment lacks an effective positioning and clamping linkage mechanism before shearing, making it difficult to meet the requirements of high-precision cutting of thick plates for the stability of the plate position. Secondly, when the thickness of the sheet material changes, the shear gap of traditional equipment needs to be manually adjusted by stopping the machine. The adjustment process relies on operating experience, which is time-consuming and the accuracy is difficult to guarantee. Finally, the transmission mechanism of conventional shearing equipment is mostly rigidly connected. The shear body is subjected to alternating impact loads during the shearing process. The impact reaction force is directly transmitted to each hinge point and frame. After long-term use, it is easy to cause problems such as shear body chipping, accelerated wear of connecting rods, and bearing fatigue cracking. To address the shortcomings of the existing technology, this invention provides a synchronous rocking shear device specifically for thick plates, aiming to solve the technical problems of large impact, difficult positioning, difficult adjustment, and short lifespan during the shearing process of thick plates through structural optimization and control strategy innovation. Summary of the Invention

[0003] The purpose of this invention is to provide a synchronous rocking shear device for thick plates. This application achieves swing shearing by using two sets of staggered rocking shearing mechanisms in conjunction with variable radius drive. It combines the coordinated positioning of the pre-marking module and the pressure roller assembly, and uses an adjustable displacement mechanism to obtain displacement sensing data to adjust the shearing stroke in a closed loop, thereby achieving adaptive and long-life shearing of thick plates.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a synchronous rocking shear device for thick plates, comprising: a frame; two sets of rocking shear mechanisms, the two sets of rocking shear mechanisms being staggered along the plate conveying direction, each set of rocking shear mechanisms including a support frame, a transmission frame, and an elastic transmission mechanism disposed between the support frame and the transmission frame, wherein the end of the support frame and the transmission frame closest to the plate is connected to a shear mechanism, the shear mechanism including two shear bodies arranged vertically opposite each other, with a shearing gap formed between the two shear bodies; and a drive linkage structure connected to the end of the support frame and the transmission frame furthest from the plate, the drive linkage structure having a variable radius mechanism, wherein when the variable radius mechanism is working, the drive linkage... The lever structure is configured to drive two shear bodies to first move towards each other and then move relative to each other to complete the shearing. The frame is also equipped with a first adjustable shifting mechanism, a second adjustable shifting mechanism, and a pre-marking module assembled with the execution end of the first adjustable shifting mechanism for marking lines before cutting the sheet metal. The execution end of the second adjustable shifting mechanism is equipped with a pressure roller assembly for pressing the sheet metal during cutting. When the sheet metal thickness is different, the first and second adjustable shifting mechanisms adjust the shifting distance and obtain displacement sensing data at that position. A control module is set on the frame, and the control module can control the variable radius mechanism to change the rotation radius according to the displacement sensing data to adjust the shearing stroke of the two shear bodies.

[0005] Preferably, the frame includes a base plate, a top frame fixed to the top of the base plate, and wheel frames spaced apart on the surface of the base plate along the plate conveying direction, and each wheel frame is equipped with a rotatable roller on its top for supporting the plate.

[0006] Preferably, the support frame includes a block fixedly connected to the side wall of the base plate, a plate fixed to the top of the block, and bushings fixed to the upper and lower parts of the plate, respectively. Each bushing is provided with a sliding rod, and one end of each sliding rod is provided with a limiting member, and the other end is fixed with a U-shaped frame. There are also two rectangular plates fixed to the side of the U-shaped frame away from the sliding rod, and a connecting shaft is vertically installed between the two rectangular plates. The connecting shaft is rotatably installed at the corner of the two scissor bodies.

[0007] Preferably, the limiting member includes a fitting sleeved on the outer end of each slide rod, an assembly frame fixed to the two fittings, and two screw holes opened at both ends of the assembly frame. Each screw hole is provided with a locking bolt. When the locking bolt passes through the screw hole and extends into the fitting sleeve and abuts against the side wall of the slide rod, it is used to lock the position of the limiting member.

[0008] Preferably, the transmission frame includes a rectangular block internally disposed within the C-shaped frame and side frames fixed to both sides of the rectangular block, wherein a limiting post fixed to the side wall of the C-shaped frame in the middle of each side frame limits sliding, and a transmission shaft is provided at the end away from the rectangular block, and the transmission shaft is rotatably mounted to the end of the scissor body distributed on the same side; the elastic transmission mechanism includes a plurality of springs laterally connected between the rectangular block and the C-shaped frame.

[0009] Preferably, the drive linkage structure includes a rigid block assembled with the rectangular block on the side away from the spring. The rigid block is rotatably mounted with a rigid rod via a first rotating shaft. The end of the rigid rod away from the rigid block passes through a rectangular groove opened in the middle of the upright plate and is fixed with a connector. The connector is connected to a variable radius mechanism.

[0010] Preferably, the first adjustable shifting mechanism and the second adjustable shifting mechanism have the same structure. The first adjustable shifting mechanism includes a wall panel fixed to the bottom of the top frame, a vertical rail fixed to one side of the wall panel, and a transmission block disposed within the vertical rail; a tool holder fixed to the lower part of the transmission block, and the tool holder is assembled with a pre-marking module; it also includes a hinge, a first swing arm, and a second swing arm rotatably mounted in sequence. The hinge is fixed to the upper part of the transmission block and hinged to the first swing arm via a pin. An end shaft is rotatably mounted on the end of the second swing arm away from the first swing arm, and a third swing arm is fixedly connected to one end of the end shaft. The end of the third swing arm away from the end shaft... The device is rotatably mounted to the top frame via a second rotating shaft; it includes an eccentric wheel transmission mechanism, comprising a mounting sleeve fixed to the top frame and a mounting shaft rotating inside the mounting sleeve, wherein one end of the mounting shaft is connected to the output end of a drive motor mounted on the top frame via a coupling, and the other end is fixed with an inner eccentric wheel, which is eccentrically positioned relative to the mounting shaft; side rods are annularly arranged around the outer circumference of the inner eccentric wheel; and an outer ring is fixed to the outer ends of several side rods, with the outer ring and the inner eccentric wheel forming a transmission track, the transmission track containing a limiting shaft fixed to the end shaft; it also includes a screw drive assembly for adjusting the movement range of the transmission block inside the vertical rail.

[0011] Preferably, the pre-marking module includes a cutter assembled with the cutter holder of the first adjustable shifting mechanism, the cutter being vertically downward and capable of acting on the upper surface of the board; the pressure roller assembly includes a roller frame assembled with the cutter holder of the second adjustable shifting mechanism, the bottom of the roller frame being provided with a plurality of movable pressure rollers, and the plurality of movable pressure rollers being capable of pressing on the upper surface of the board.

[0012] Preferably, the screw drive assembly includes a rectangular frame fixed to the side wall of the top frame, a crossbar inside the rectangular frame, one end of the crossbar passing through a through hole at the end of the rectangular frame and fixed with a rotating handle, and the other end having a first external thread on its outer periphery; a first threaded sleeve inside the rectangular frame and threaded onto the outer periphery of the first external thread; and a top block fixed to the top of the first threaded sleeve, wherein the top block has a slider that rotates via a third rotating shaft, and the slider can be placed inside a groove opened near the end shaft of the second rocker arm.

[0013] Preferably, the variable radius mechanism includes a frame fixed to the top of the block, a geared motor assembled to the top of the frame, a disc connected to the output shaft of the geared motor via a coupling, and a mounting plate fixed to the side wall of the disc. One end of the mounting plate has a groove, and the other end contains a micro motor. The micro motor is fixed with a guide rod via a coupling. The guide rod extends into the groove and has a second external threaded sleeve. A second threaded sleeve is located within the groove and threadedly connected to the second external threaded sleeve. The second threaded sleeve is rotatably mounted to the connecting member of the drive linkage structure via a fourth rotating shaft.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention employs two sets of oscillating shearing mechanisms arranged alternately along the sheet material conveying direction. Within each set, a variable radius mechanism and a drive linkage structure drive two shear bodies to first translate closer together and then move relative to each other to form an oscillating shearing action. This is complemented by a pre-marking module in front of the shearing path for marking and positioning, and a pressure roller assembly for real-time pressing of the sheet material. Simultaneously, first and second adjustable displacement mechanisms acquire displacement sensing data for sheets of different thicknesses. A control module drives the variable radius mechanism to adjust the shearing stroke in a closed loop. The adjustable displacement mechanism combines eccentric wheel transmission with screw drive to achieve integrated adjustment and sensing. This enables high-quality fixed-length cutting of thick sheets, adaptive thickness switching, and long-term stable operation. Attached Figure Description

[0015] Figure 1 This is a first-view three-dimensional structural diagram of the present invention; Figure 2 This is a second-view three-dimensional structural diagram of the present invention; Figure 3 This is a schematic diagram of the rear view structure of the present invention; Figure 4 This is a side view of the structure of the present invention; Figure 5 This is a schematic diagram of the disassembled structure of the present invention; Figure 6 for Figure 5 A magnified schematic diagram of the first adjustable shifting mechanism in the middle; Figure 7 for Figure 6 A schematic diagram of the side view structure; Figure 8 This is an enlarged structural schematic diagram of the rocking shear mechanism in this invention; Figure 9 for Figure 8 Enlarged structural diagram at point A; Figure 10 for Figure 8 Another perspective structural diagram.

[0016] In the picture: 01. Substrate; 02. Wheel frame; 03. Roller; 04. Top frame; 05. First adjustable shifting mechanism; 051. Vertical rail; 052. Transmission block; 053. Tool holder; 054. Hinge; 055. First rocker arm; 056. Second rocker arm; 057. Slide groove; 058. Slider; 059. Mounting sleeve; 0511. Mounting shaft; 0512. Side rod; 0513. Outer ring; 0514. Drive motor; 0515. End shaft; 0516. Limiting shaft; 0517. Third rocker arm; 0518. Rectangular frame; 0519. First external thread; 0520. First threaded sleeve; 0521. Top block; 0522. Rotary handle; 0523. Inner eccentric wheel; 06. Cutting knife; 07. Second adjustable shifting mechanism; 08. Roller frame; 081. Movable pressure roller; 09. Shaking shear mechanism; 091. Vertical plate; 092. Bushing; 093. Slide rod; 094. C-shaped frame; 095. Rectangular plate; 096. Connecting shaft; 097. Shear body; 098. Rectangular block; 099. Spring; 0910. Side frame; 0911. Limiting post; 0912. Drive shaft; 0913. Assembly frame; 0914. Assembly kit; 0915. Locking bolt; 0916. Vertical block; 0917. Vertical frame; 0918. Gear motor; 0919. Disc; 0920. Mounting plate; 0921. Groove; 0922. Second external threaded sleeve; 0923. Second threaded sleeve; 0924. Connector; 0925. Rigid rod; 0926. Rigid block; 10. Control module. Detailed Implementation

[0017] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. The various embodiments of this invention are described in detail below with reference to the accompanying drawings.

[0018] Example 1 Please see Figures 1 to 10 The present invention preferably provides the following technical solution: a synchronous rocking shear device for thick plates, comprising: a frame; two sets of rocking shear mechanisms 09, the two sets of rocking shear mechanisms 09 being staggered along the plate conveying direction, each set of rocking shear mechanisms 09 including a support frame, a transmission frame, and an elastic transmission mechanism disposed between the support frame and the transmission frame, wherein the end of the support frame and the transmission frame near the plate is connected to a shear mechanism, the shear mechanism including two shear bodies 097 arranged vertically opposite each other, and a shearing gap being formed between the two shear bodies 097; and a drive linkage structure connected to the end of the support frame and the transmission frame away from the plate, the drive linkage structure having a variable radius mechanism, the drive linkage structure being configured to drive the two shear bodies 097 when the variable radius mechanism is working. The blades 097 first move towards each other and then move relative to each other to complete the cutting. The frame is also equipped with a first adjustable shifting mechanism 05, a second adjustable shifting mechanism 07, and a pre-marking module assembled with the execution end of the first adjustable shifting mechanism 05 for marking lines before cutting the sheet metal. The execution end of the second adjustable shifting mechanism 07 is equipped with a pressure roller assembly for pressing during sheet metal cutting. When the sheet metal thickness is different, the first adjustable shifting mechanism 05 and the second adjustable shifting mechanism 07 adjust the shifting distance and obtain displacement sensing data at that position. The control module 10 is set on the frame and can control the variable radius mechanism to change the rotation radius according to the displacement sensing data to adjust the cutting stroke of the two blades 097.

[0019] like Figure 3 , 5 As shown, this invention sets up two sets of rocking shear mechanisms 09 arranged alternately along the conveying direction of the sheet metal. In each set of rocking shear mechanisms 09, the two shear bodies 097 first move closer together and then move relative to each other under the drive of the variable radius mechanism and the drive linkage structure, forming a motion trajectory similar to "swinging shearing". This action mode allows the shearing force of the thick plate to be released gradually during the shearing process, avoiding the problem of excessive instantaneous impact force caused by traditional straight up and down shearing, and significantly reducing the shearing resistance. It is especially suitable for high-quality fixed-length cutting of medium and thick plates with a thickness of ≥25mm.

[0020] Secondly, the present invention provides a pre-marking module assembled with the execution end of the first adjustable shifting mechanism 05 in front of the shearing path, which can pre-mark the shearing baseline on the surface of the plate, providing a visual and physical positioning basis for subsequent shearing; at the same time, the pressure roller assembly installed at the execution end of the second adjustable shifting mechanism 07 presses the plate in real time during the shearing process, effectively suppressing the warping and vibration of the plate in the shearing zone. The two work together to greatly improve the straightness and perpendicularity of the shearing and reduce burrs and edge collapse defects. Furthermore, the present invention acquires displacement sensing data of different thickness plates at the marking position and the pressing position through the first adjustable displacement mechanism 05 and the second adjustable displacement mechanism 07 respectively. The control module 10 drives the variable radius mechanism to change the rotation radius in real time based on the data, thereby adjusting the swing amplitude of the drive linkage structure, and finally accurately changing the shearing stroke of the two shear bodies 097. This closed-loop control mechanism enables the device to automatically adapt to the shearing requirements from conventional medium-thick plates to extra-thick plates, without the need for manual mechanical adjustment of the shear gap, significantly improving production switching efficiency and shearing consistency. Meanwhile, both the first adjustable shift mechanism 05 and the second adjustable shift mechanism 07 adopt a structural design that combines eccentric wheel transmission and screw drive assembly. This design can precisely adjust the running distance of the execution end (pre-marking module / pressure roller assembly) through the screw drive assembly, and simultaneously acquire displacement sensing data during the adjustment process, realizing "adjustment is sensing". This provides real-time position feedback to the control module 10. This integrated design simplifies the sensor and external measurement links, and improves the system response speed and control reliability.

[0021] Finally, the present invention connects an elastic transmission mechanism laterally between the support frame and the transmission frame of each set of rocking shear mechanisms 09. When the drive linkage structure drives the transmission frame to reciprocate, the elastic transmission mechanism can effectively absorb the impact of motion and the vibration of shear reaction force, reduce the damage of rigid collision to the shear body 097 and the hinge part, and at the same time ensure the synchronization and stability of the two shear bodies 097 during the translation and approach process, and extend the maintenance cycle and service life of the overall equipment.

[0022] Furthermore, the frame includes a substrate 01, a top frame 04 fixed to the top of the substrate 01, and wheel frames 02 spaced apart on the surface of the substrate 01 along the material conveying direction. Each wheel frame 02 is equipped with a rotatable roller 03 on its top for supporting the material. Figure 1 , 2 As shown in Figures 3, 4, and 5, this structure provides continuous rolling support for the sheet metal, enabling smooth sheet metal movement. Furthermore, the spaced rollers 03 can adapt to sheets of different lengths, preventing the sheet metal from sagging due to its own weight and affecting the cutting accuracy. At the same time, this design provides convenience for manually adjusting the position of the sheet metal.

[0023] Furthermore, the support frame includes a block 0916 fixedly connected to the side wall of the base plate 01, a plate 091 fixed to the top of the block 0916, and bushings 092 fixed to the upper and lower parts of the plate 091 respectively. Each bushing 092 is provided with a sliding rod 093, and one end of the two sliding rods 093 is provided with a limiting member, and the other end is fixed with a U-shaped frame 094; and two rectangular plates 095 are fixed to the side of the U-shaped frame 094 away from the sliding rods 093. A connecting shaft 096 is vertically installed between the two rectangular plates 095, and the connecting shaft 096 is rotatably installed at the corner of the two scissor bodies 097.

[0024] like Figure 8 , 9 As shown in Figure 10, the rigid support and rotation foundation of the two scissor bodies 097 are formed by the cooperation of the upright plate 091, bushing 092, slide rod 093, C-shaped frame 094, rectangular plate 095 and connecting shaft 096. Specifically, since the two slide rods 093 slide within the two bushings 092, in conjunction with the limiting component, the linearity of the movement and the repeatability of the positioning accuracy when the two scissor bodies 097 move closer together can be guaranteed. Furthermore, the coupling 096 is rotatably mounted at the corner of the two shear bodies 097, allowing the shear bodies 097 to swing slightly around the coupling 096 during the shearing process. In conjunction with the structural characteristics of the drive linkage structure and the variable radius mechanism, when the drive variable radius mechanism is working, within the elastic coefficient of the elastic transmission mechanism, the drive linkage structure can push the support frame and the transmission frame to move towards the plate synchronously. When the limiting part where the support frame is located abuts against the two bushings 092 that are in a fixed state, the position of the support frame is fixed. As the variable radius mechanism continues to operate, the transmission frame moves further inward relative to the support frame to achieve the staggered operation of the two scissor bodies 097, further realizing the composite motion trajectory of "first moving closer and then moving relative to each other", effectively reducing the sliding friction between the scissor body 097 and the plate, and extending the service life of the scissor body 097.

[0025] Furthermore, the limiting component includes a fitting 0914 sleeved on the outer end of each slide rod 093, an assembly frame 0913 fixed to the two fittings 0914, and two screw holes opened at both ends of the assembly frame 0913, with a locking bolt 0915 provided in each screw hole. When the locking bolt 0915 passes through the screw hole and extends into the fitting 0914 and abuts against the side wall of the slide rod 093, it is used to lock the position of the limiting component.

[0026] like Figure 8 As shown, by adjusting the distance between the two fittings 0914 and the two bushings 092, the initial position of the two shear bodies 097 can be adjusted to move relative to each other and perform shearing, thus adapting to boards of different widths.

[0027] Furthermore, the transmission frame includes a rectangular block 098 internally disposed in the C-shaped frame 094 and side frames 0910 fixed to both sides of the rectangular block 098 respectively. Each side frame 0910 has a limiting post 0911 fixed to the side wall of the C-shaped frame 094 in the middle for limiting sliding. A transmission shaft 0912 is provided at the end of the side frame 0910 away from the rectangular block 098, and the transmission shaft 0912 is rotatably mounted to the end of the scissor body 097 distributed on the same side.

[0028] like Figure 8 , 9 As shown in Figure 10, the transmission frame of the present invention is rotatably connected to the end of the scissor body 097 through a combination of rectangular block 098, side frame 0910, limiting post 0911 and transmission shaft 0912, and the limiting post 0911 is in a limiting sliding fit with the middle of the side frame 0910 to ensure that the transmission frame moves stably in a predetermined direction under the push of the elastic transmission mechanism and avoids deflection. The drive shaft 0912 transmits power to the end of the scissor body 097. Within the elastic coefficient of the elastic transmission mechanism, the support frame and the transmission frame drive the scissor body 097 as follows: Figure 1 , 3 When the state moves closer to the plate and exceeds the elastic coefficient of the elastic transmission mechanism, the two transmission shafts 0912 push the two shear heads to move alternately around the connecting shaft 096, thereby completing the shearing action.

[0029] Furthermore, the elastic transmission mechanism includes several springs 099 that are laterally connected between the rectangular block 098 and the U-shaped frame 094.

[0030] like Figure 8 As shown, the springs 099 here can effectively absorb the impact of motion and the vibration of shear reaction force when the drive linkage structure drives the transmission frame to reciprocate further, reducing the damage of rigid collisions to the scissor body 097 and each hinge part. At the same time, the elastic restoring force of the springs 099 helps the scissor body 097 to quickly reset after shearing, improving the shearing frequency and production efficiency. In addition, the parallel arrangement of multiple springs 099 also ensures the balance of force on the transmission frame and avoids unbalanced load.

[0031] Furthermore, the drive linkage structure includes a rigid block 0926 assembled with the side of the rectangular block 098 away from the spring 099. The rigid block 0926 is rotatably mounted with a rigid rod 0925 via a first rotating shaft. The end of the rigid rod 0925 away from the rigid block 0926 passes through a rectangular groove opened in the middle of the vertical plate 091 and is fixed with a connector 0924. The connector 0924 is connected to the variable radius mechanism.

[0032] like Figure 8 , 10As shown, this linkage structure converts the rotational motion of the variable radius mechanism into the oscillation of the rigid rod 0925, and then drives the rectangular block 098 to move the transmission frame in a straight line through the rigid block 0926. Specifically, within the elastic coefficient of several springs 099, the rectangular block 098 synchronously pushes the support frame to translate. When it exceeds the elastic coefficient of several springs 099, several springs 099 push the transmission frame to translate further relative to the support frame, so as to realize the relative shearing of the two scissor bodies 097. This transmission chain is simple and efficient. Furthermore, the connection between the rigid rod 0925, the connecting piece 0924, and the variable radius mechanism allows the swing amplitude of the rigid rod 0925 to change when the variable radius mechanism changes its rotation radius, thereby precisely controlling the shearing stroke of the scissor body 097 and achieving closed-loop adjustment. It is worth noting that the transverse and longitudinal diameters of the rectangular groove are greater than the maximum operating radius of the rigid rod 0925.

[0033] Example 2 In another embodiment of the present invention, the first adjustable shifting mechanism 05 and the second adjustable shifting mechanism 07 have the same structure. The first adjustable shifting mechanism 05 includes a wall plate fixed to the bottom of the top frame 04, a vertical rail 051 fixed to one side of the wall plate, and a transmission block 052 disposed within the vertical rail 051; a tool holder 053 fixed to the lower part of the transmission block 052, and the tool holder 053 being assembled with the pre-marking module; it also includes a hinge 054, a first swing rod 055, and a second swing rod 056 rotatably mounted in sequence. The hinge 054 is fixed to the upper part of the transmission block 052 and hinged to the first swing rod 055 via a pin. An end shaft 0515 is rotatably mounted on the end of the second swing rod 056 away from the first swing rod 055, and a third swing rod 0517 is fixedly connected to one end of the end shaft 0515. The end of the third swing rod 0517 away from the end shaft 0515 is connected to... The device is rotatably mounted on the top frame 04 via a second rotating shaft; it includes an eccentric wheel transmission mechanism, which comprises a mounting sleeve 059 fixed on the top frame 04 and a mounting shaft 0511 rotating inside the mounting sleeve 059. One end of the mounting shaft 0511 is connected to the output end of a drive motor 0514 mounted on the top frame 04 via a coupling, and the other end is fixed with an inner eccentric wheel 0523, which is eccentrically positioned with respect to the mounting shaft 0511; a side rod 0512 annularly arranged around the outer circumference of the inner eccentric wheel 0523; and an outer ring 0513 fixed to the outer ends of several side rods 0512, with the outer ring 0513 and the inner eccentric wheel 0523 forming a transmission track. A limiting shaft 0516 fixed to the end shaft 0515 is provided in the transmission track; and a screw drive assembly for adjusting the movement range of the transmission block 052 inside the vertical rail 051.

[0034] like Figure 5 , 6As shown in Figure 7, in this embodiment, the inner eccentric wheel 0523 rotates to drive the outer ring 0513 and the side rod 0512 to form a transmission track. Since the limiting shaft 0516 inside the transmission track is fixed to the end shaft 0515, when the drive motor 0514 is running, the inner eccentric wheel 0523, which is eccentrically set with the output shaft of the drive motor 0514 and the mounting shaft 0511, can rotate, thereby driving the limiting shaft 0516 to run inside the transmission track. At this time, the end shaft 0515 and the third swing rod 0517 swing, and the power is transmitted to the transmission block 052 through the second swing rod 056, the first swing rod 055 and the hinge 054, so that the knife holder 053 moves up and down along the vertical rail 051, thereby realizing the up and down movement of the cutter 06 to meet the cutting line of the plate. This multi-link-eccentric wheel composite transmission structure features a large transmission ratio, smooth movement, and reliable position locking. It can precisely adjust the scribing depth of the pre-scrubbing module, while the screw drive component can be manually fine-tuned in the stopped state, taking into account the flexibility of automatic control and manual intervention. Furthermore, since the first and second adjustable shifting mechanisms 07 have the same structure, this beneficial effect also applies to the second adjustable shifting mechanism 07 for adjusting the height and clamping force of the pressure roller assembly, which will not be elaborated here.

[0035] It is worth noting that a displacement sensor is installed on the transmission block 052. This is a mature existing technology, and the specific principle and structure will not be elaborated here.

[0036] Furthermore, the screw drive assembly includes a rectangular frame 0518 fixed to the side wall of the top frame 04, a crossbar inside the rectangular frame 0518, one end of the crossbar passing through a through hole at the end of the rectangular frame 0518 and fixed with a handle 0522, and the other end having a first external thread 0519 on its outer periphery; a first threaded sleeve 0520 inside the rectangular frame 0518 and threadedly fitted around the outer periphery of the first external thread 0519; and a top block 0521 fixed to the top of the first threaded sleeve 0520, and a slider 058 rotating on the top block 0521 via a third rotating shaft, the slider 058 being able to be placed inside a groove 057 opened near the end shaft 0515 of the second rocker arm 056.

[0037] like Figure 6 , 7As shown, the slider 058 can be placed inside the groove 057 of the second rocker arm 056. When the rotating handle 0522 drives the crossbar to rotate, the top block 0521 can move along the axis of the crossbar through the threaded engagement of the first external thread 0519 and the first threaded sleeve 0520. Since the top block 0521 drives the slider 058 to slide in the groove 057 through the third rotating shaft, the effective swing fulcrum position of the second rocker arm 056 is changed, thereby realizing the precise adjustment of the movement amplitude of the transmission block 052 in the vertical rail 051. This screw adjustment method has the advantages of simple structure, labor-saving adjustment, good self-locking, and stable position. It can be quickly preset according to different thickness plates before the equipment is run, and the displacement change during the adjustment process can be sensed by the control module 10 through the movement of the transmission block 052, providing an initial position reference for adaptive control.

[0038] Furthermore, the pre-marking module includes a cutter 06 assembled with the cutter holder 053 where the first adjustable shifting mechanism 05 is located. The cutter 06 is vertically downward and can act on the upper surface of the board. The pressure roller assembly includes a roller frame 08 assembled with the cutter holder 053 where the second adjustable shifting mechanism 07 is located. The bottom of the roller frame 08 is provided with a number of movable pressure rollers 081, and the number of movable pressure rollers 081 can roll and press on the upper surface of the board. This is a mature existing technology and will not be described in detail.

[0039] Example 3 In another embodiment of the present invention, the variable radius mechanism includes a frame 0917 fixed to the top of the block 0916, a geared motor 0918 assembled to the top of the frame 0917, a disc 0919 connected to the output shaft of the geared motor 0918 via a coupling, and a mounting plate 0920 fixed to the side wall of the disc 0919. The mounting plate 0920 has a groove 0921 at one end and a micro motor at the other end. A guide rod is fixed to the micro motor via a coupling. The guide rod extends into the groove 0921 and has a second external threaded sleeve 0922. A second threaded sleeve 0923 is provided within the groove 0921 and threadedly connected to the second external threaded sleeve 0922. The second threaded sleeve 0923 is rotatably mounted to the connecting member 0924 where the drive linkage structure is located via a fourth rotating shaft.

[0040] In this embodiment, such as Figure 1 , 8As shown in Figures 9 and 10, when the control module 10 controls the micro motor of the variable radius mechanism to run according to the displacement sensing data, the micro motor drives the guide rod to rotate through the coupling. The second outer threaded sleeve 0922 and the second threaded sleeve 0923 on the guide rod form a lead screw pair. At this time, the micro motor receives the running command from the control module 10 and adjusts the rotation angle, which can accurately change the rotation radius of the connecting piece 0924, and then continuously adjust the shearing stroke. Compared with the traditional hydraulic or mechanical shift adjustment, this structure has the advantages of high adjustment resolution, stepless adjustment and rapid response, which can meet the differentiated requirements of different thickness plates for shearing stroke. Specific examples Figure 6 , 7 As shown, the closer the top block 0521 is to the drive motor 0514, the greater the longitudinal movement of the transmission block 052 within the vertical rail 051, i.e., the deeper the cutting. At this time, the control module 10 receives the displacement signal and controls the second threaded sleeve 0923 as follows: Figure 9 As shown, the further away from the center of the disk 0919, the greater the expansion of the two shear bodies 097. In general, the thicker the plate and the deeper the cutting line, the greater the expansion of the two shear bodies 097.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms “installation,” “connection,” “linking,” “fixing,” etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part. There are various ways to install detachably, such as by using a plug-in and snap-fit ​​method, or by using a bolt connection, etc.

[0042] The above embodiments, which describe the specific features of the present invention, are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made to the present invention by those skilled in the art based on the above description of the invention shall fall within the scope of protection of the present invention.

Claims

1. A synchronous rocking shear device specifically for thick plates, characterized in that... ,include: frame; Two sets of rocking shear mechanisms (09) are staggered along the plate conveying direction. Each set of rocking shear mechanisms (09) includes a support frame, a transmission frame, and an elastic transmission mechanism located between the support frame and the transmission frame. The support frame and the transmission frame are connected to a shear mechanism at the end near the plate. The shear mechanism includes two shear bodies (097) arranged opposite each other, and a shearing gap is formed between the two shear bodies (097). And a drive linkage structure connected to the end of the support frame and transmission frame away from the plate, wherein the drive linkage structure is provided with a variable radius mechanism. When the variable radius mechanism is working, the drive linkage structure is configured to drive the two shear bodies (097) to first move towards each other and then move relative to each other to complete the shearing. The frame is also provided with a first adjustable shifting mechanism (05), a second adjustable shifting mechanism (07), and a pre-marking module assembled with the execution end of the first adjustable shifting mechanism (05) for marking before cutting the sheet metal. The execution end of the second adjustable shifting mechanism (07) is equipped with a pressure roller assembly for pressing during sheet metal cutting. When the sheet metal thickness is different, the first adjustable shifting mechanism (05) and the second adjustable shifting mechanism (07) adjust the shifting distance and obtain displacement sensing data at that position. The control module (10) is mounted on the frame and can control the variable radius mechanism to change the rotation radius according to the displacement sensing data, so as to adjust the shearing stroke of the two shear bodies (097).

2. The synchronous rocking shear device for thick plates according to claim 1, characterized in that: The frame includes a base plate (01), a top frame (04) fixed to the top of the base plate (01), and wheel frames (02) spaced apart on the surface of the base plate (01) along the plate conveying direction. Each wheel frame (02) is equipped with a rotatable roller (03) on its top for supporting the plate.

3. The synchronous rocking shear device for thick plates according to claim 2, characterized in that: The support frame includes a block (0916) fixedly connected to the side wall of the base plate (01), a plate (091) fixed to the top of the block (0916), and bushings (092) fixed to the upper and lower parts of the plate (091). Each bushing (092) is provided with a sliding rod (093), and one end of each sliding rod (093) is provided with a limiting member, and the other end is fixed with a U-shaped frame (094). And two rectangular plates (095) fixed on the side of the C-shaped frame (094) away from the slide bar (093), a connecting shaft (096) is vertically installed between the two rectangular plates (095), and the connecting shaft (096) is rotatably installed at the corner of the two scissor bodies (097).

4. The synchronous rocking shear device for thick plates according to claim 3, characterized in that: The limiting component includes a fitting (0914) sleeved on the outer end of each slide rod (093), an assembly frame (0913) fixed to the two fittings (0914), and two screw holes opened at both ends of the assembly frame (0913). Each screw hole is provided with a locking bolt (0915). When the locking bolt (0915) passes through the screw hole and extends into the fitting (0914) and abuts against the side wall of the slide rod (093), it is used to lock the position of the limiting component.

5. The synchronous rocking shear device for thick plates according to claim 3, characterized in that: The transmission frame includes a rectangular block (098) internally disposed in the inverted frame (094) and side frames (0910) fixed to both sides of the rectangular block (098). Each side frame (0910) has a limiting post (0911) fixed to the side wall of the inverted frame (094) in the middle for limiting sliding. A transmission shaft (0912) is provided at one end away from the rectangular block (098), and the transmission shaft (0912) is rotatably mounted to the end of the scissor body (097) distributed on the same side. The elastic transmission mechanism includes a plurality of springs (099) that are laterally connected between the rectangular block (098) and the U-shaped frame (094).

6. The synchronous rocking shear device for thick plates according to claim 5, characterized in that: The drive linkage structure includes a hard block (0926) assembled with the side of the rectangular block (098) away from the spring (099). The hard block (0926) is rotatably mounted with a hard rod (0925) via a first rotating shaft. The end of the hard rod (0925) away from the hard block (0926) passes through a rectangular groove opened in the middle of the upright plate (091) and is fixed with a connector (0924). The connector (0924) is connected to the variable radius mechanism.

7. The synchronous rocking shear device for thick plates according to claim 6, characterized in that: The first adjustable shift mechanism (05) and the second adjustable shift mechanism (07) have the same structure. The first adjustable shift mechanism (05) includes a wall plate fixed to the bottom of the top frame (04). A vertical rail (051) is fixed on one side of the wall plate, and a transmission block (052) is provided inside the vertical rail (051). And a tool holder (053) fixed to the lower part of the transmission block (052), and the tool holder (053) is assembled with the pre-marking module; It also includes a hinge (054), a first rocker arm (055) and a second rocker arm (056) that are rotatably installed in sequence, wherein the hinge (054) is fixed to the upper part of the transmission block (052) and hinged to the first rocker arm (055) by a pin; The end of the second swing arm (056) away from the first swing arm (055) is rotatably mounted with an end shaft (0515), and one end of the end shaft (0515) is connected to a third swing arm (0517). The end of the third swing arm (0517) away from the end shaft (0515) is rotatably mounted with the top frame (04) through a second rotating shaft. An eccentric wheel transmission mechanism includes a mounting sleeve (059) fixed on the top frame (04) and a mounting shaft (0511) that rotates inside the mounting sleeve (059). One end of the mounting shaft (0511) is connected to the output end of a drive motor (0514) provided on the top frame (04) via a coupling, and the other end is fixed with an inner eccentric wheel (0523). The inner eccentric wheel (0523) is eccentrically set with respect to the mounting shaft (0511). A side rod (0512) is arranged in a ring around the outer periphery of the inner eccentric wheel (0523); And an outer ring (0513) fixed to the outer end of several side rods (0512), and the outer ring (0513) and the inner eccentric wheel (0523) form a transmission track, and a limiting shaft (0516) fixed to the end shaft (0515) is provided in the transmission track. It also includes a screw drive assembly for adjusting the movement of the transmission block (052) inside the vertical rail (051).

8. The synchronous rocking shear device for thick plates according to claim 7, characterized in that: The pre-marking module includes a cutter (06) assembled with the cutter holder (053) of the first adjustable shifting mechanism (05), the cutter (06) being vertically downward and capable of acting on the upper surface of the plate. The pressure roller assembly includes a roller frame (08) assembled with the tool holder (053) where the second adjustable shifting mechanism (07) is located. The bottom of the roller frame (08) is provided with a plurality of movable pressure rollers (081), and the plurality of movable pressure rollers (081) can roll onto the upper surface of the plate.

9. A synchronous rocking shear device for thick plates according to claim 7, characterized in that: The screw drive assembly includes a rectangular frame (0518) fixed to the side wall of the top frame (04). A crossbar is provided inside the rectangular frame (0518). One end of the crossbar passes through a through hole opened at the end of the rectangular frame (0518) and is fixed with a rotating handle (0522). The other end of the crossbar is provided with a first external thread (0519) on its outer periphery. A first threaded sleeve (0520) is provided inside the rectangular frame (0518) and threaded onto the outer periphery of the first external thread (0519). And a top block (0521) fixed on the top of the first screw sleeve (0520), and the top block (0521) has a slider (058) that rotates through the third rotating shaft. The slider (058) can be placed inside the groove (057) opened at the end of the second rocker arm (056) near the end shaft (0515).

10. A synchronous rocking shear device for thick plates according to claim 6, characterized in that: The variable radius mechanism includes a frame (0917) fixed to the top of the block (0916), a geared motor (0918) assembled inside the top of the frame (0917), a disc (0919) connected to the output shaft of the geared motor (0918) via a coupling, and a mounting plate (0920) fixed to the side wall of the disc (0919). The mounting plate (0920) has a groove (0921) at one end and a micro motor at the other end. The micro motor is fixed with a guide rod via a coupling. The guide rod extends into the groove (0921) and has a second external threaded sleeve (0922). And a second threaded sleeve (0923) is provided in the groove (0921) and threadedly connected to the second outer threaded sleeve (0922), and the second threaded sleeve (0923) is rotatably installed with the connecting piece (0924) where the drive linkage structure is located via a fourth rotating shaft.

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