Gantry scissors with clamping and positioning mechanism

Abstract

The gantry shear with the clamping and positioning mechanism comprises a gantry frame, a lifting hydraulic cylinder, a shear tool, a sliding groove, a clamping plate, a clamping hydraulic cylinder and the like, and the lifting hydraulic cylinder and the clamping hydraulic cylinder are electrically connected to an industrial control board through reversing valves respectively. The sliding grooves are formed in the two sides of the interior of the portal frame, so that the shearing tool moves up and down along the sliding grooves, and stable movement in the vertical direction is ensured. The clamping plates are used in cooperation with the clamping hydraulic cylinders, an angle adjusting mechanism is arranged, and stable clamping and accurate positioning of the materials are enhanced. In addition, the shearing tool gap is changed by manually adjusting the screw rod, and the requirements of different materials are met. A clamping block and a combination of the clamping block, a sliding rod, a gear and a rotating motor are arranged at the bottom of the portal frame, and clamping operation on a workpiece in the front-back direction is achieved. According to the utility model, the cutting precision and stability are integrally improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gantry shears mechanical technical field, concretely relates to a gantry shear with clamping positioning mechanism. BACKGROUND

[0002] As a forming equipment, the gantry shear has a large shearing force, is usually used for shearing various metal materials, and can adapt to the shearing demand of metal materials with different thicknesses and strengths. The structure of the gantry shear includes a gantry, a hydraulic system, a shear tool and the like. During long-term service, the shear tool and the gantry are prone to deviation, the parallelism and perpendicularity between the cutting edges are destroyed, the cut of the sheared material is no longer neat, the cut surface is uneven, and the shearing precision of the gantry shear decreases. In addition, the deviation of the shear tool will cause uneven distribution of the force between the cutting edge and the sheared material, and the local excessive stress will accelerate the wear and tear, thereby reducing the service life of the shear tool.

[0003] The utility model discloses a kind of stainless steel waste clamping positioning devices of gantry shear machine, by the clamping positioning mechanism being set, control cylinder drives telescopic piston rod to drive clamping positioning block to be active, it can be clamped and positioned to the stainless steel waste in waste transmission frame, improve the stability when cutting. However its positioning clamping structure is set in one side of gantry shear, that is, the clamping force to material is substantially opposite to gantry shear, the effect is more limited, poor practicability. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of gantry shear to improve the deviation problem in cutting process.

[0005] To achieve the above object, the technical scheme provided by the utility model is as follows:

[0006] A kind of gantry shear with clamping positioning mechanism, including gantry, the lifting hydraulic cylinder is vertically arranged in the gantry, the bottom of the lifting hydraulic cylinder is connected with shear tool, the inside of the gantry is vertically provided with sliding groove on both sides, the shear tool moves up and down along the sliding groove, the shear tool is obliquely arranged in horizontal direction, the both sides of the inside of the gantry are respectively connected with clamping plate, the clamping plate is connected with clamping hydraulic cylinder, the lifting hydraulic cylinder and clamping hydraulic cylinder are electrically connected to industrial control board by reversing valve.

[0007] Further, clamping plate seat is further provided between the clamping plate and the gantry, the clamping plate is provided with guide rail at the end, the clamping plate seat is provided with a plurality of guide wheels adapted to the guide rail, and the clamping hydraulic cylinder is arranged on the clamping plate seat.

[0008] Further, the lower part of the clamping plate seat is provided with a turbine, the turbine is engaged with a worm gear, the worm gear penetrates through the gantry and is provided with a rotating handle outside the gantry, the clamping hydraulic cylinder is connected with the gantry through an arc-shaped groove and a sliding block, the arc-shaped groove is concentrically arranged with the turbine, and the sliding block is arranged in the arc-shaped groove.

[0009] Further, the two clamping plate seats are oppositely arranged and are connected through a linkage chain inside the gantry, the linkage chain is provided with linkage teeth, the clamping plate seat is provided with a linkage column matched with the linkage teeth, and the center of the linkage chain is matched with the shearing tool.

[0010] Further, the bottom of the gantry is provided with clamping blocks in the front and rear directions, respectively, the clamping blocks are transversely and slidably connected with the gantry through slide rods provided with racks on the sides, the racks are engaged with gears, the gears are connected to the output end of a rotating motor, and the output end of the rotating motor is electrically connected with the industrial control board.

[0011] Further, the clamping block is hinged to the slide rod, a spring is arranged on the side of the clamping block away from the hinging position of the clamping block and the slide rod, the two ends of the spring are respectively abutted against the clamping block and the slide rod, and the slide rod is further provided with a limiting block for limiting excessive rotation of the clamping block.

[0012] Further, the shearing tool comprises upper and lower shears, so that the lower shear is embedded into the bottom of the gantry through a lower shear seat, the lower shear seat is slidably arranged on the gantry through a guide rod, a screw rod is arranged through the bottom of the gantry, the lower shear seat is provided with a thread matched with the screw rod, and the screw rod is further provided with a hand crank.

[0013] Further, a pressure sensor is further arranged on the contact surface of the clamping plate and / or the clamping block and the shearing tool, a rubber plate is arranged on the periphery of the pressure sensor, and the pressure sensor is electrically connected with the industrial control board.

[0014] Further, an anti-skid pattern is arranged on the surface of the rubber plate, and the pressure sensor is embedded into the clamping plate and / or the clamping block and the rubber plate.

[0015] Further, a safety grating is arranged on the periphery of the gantry, and the safety grating is electrically connected with the industrial control board.

[0016] The advantages and beneficial effects of the utility model lie in:

[0017] 1. By setting the sliding groove on both sides of the gantry and making the upper shear move up and down along the sliding groove, the stable movement of the shear in the vertical direction is ensured, effectively reducing the deviation problem in the cutting process. At the same time, the cooperation of the clamping plate with the clamping hydraulic cylinder and the clamping plate angle adjusting mechanism enhances the stable clamping and accurate positioning of the material, thereby improving the cutting precision. In addition, the clamping plate linkage mechanism adapts to different widths of the material to be cut.

[0018] 2. By manually adjusting the screw rod, the lower shear seat can move in the front-rear direction, thereby changing the gap of the shear and adapting to the cutting requirements of materials of different thicknesses or materials.

[0019] 3. The combination design of the clamping block at the bottom of the gantry and the sliding rod, gear and rotating motor, the industrial control board can adjust the position of the clamping block according to the needs, realize the clamping operation of the workpiece in the front-rear direction. The clamping block is linked through the gear and rack to ensure that the center of the workpiece is located at the shear cutting position. In addition, the clamping block and the sliding rod are connected through the structure of the spring and the limiting block, so that the workpiece can press the clamping block without being affected during feeding, and the clamping block is limited to rotate during shearing to realize the positioning function. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the utility model;

[0021] Figure 2 is a structural schematic view two of the utility model;

[0022] Figure 3 is a disassembled structural schematic view of the clamping plate of the utility model;

[0023] Figure 4 is a structural schematic view of the linkage chain of the utility model;

[0024] Figure 5 is a structural schematic view of the sliding rod of the utility model;

[0025] Figure 6 is a structural schematic view of the lower shear seat of the utility model;

[0026] Figure 7 is a structural schematic view of the clamping block of the utility model;

[0027] In the figure: gantry 1, lifting hydraulic cylinder 2, shears 3, sliding groove 4, clamping plate 5, clamping hydraulic cylinder 6, clamping plate seat 7, guide rail 8, guide wheel 9, turbine 10, worm 11, rotating handle 12, arc-shaped groove 13, sliding block 14, linkage chain 15, linkage tooth 16, linkage column 17, clamping block 18, sliding rod 19, rack 20, gear 21, spring 22, limiting block 23, upper shear 24, lower shear 25, lower shear seat 26, guide rod 27, screw rod 28, hand crank 29, pressure sensor 30, rubber plate 31, safety grating 32. DETAILED DESCRIPTION

[0028] The specific embodiments of the utility model will be further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot be used to limit the protection scope of the utility model. EMBODIMENT

[0029] The utility model provides a kind of gantry shears with clamping positioning mechanism, including gantry 1 and lifting hydraulic cylinder 2. Gantry 1 is vertically through setting lifting hydraulic cylinder 2, and its bottom end is connected shear 3. Gantry 1 inside two sides are vertically equipped with sliding groove 4, and upper shear 24 in shear 3 moves up and down along sliding groove 4.

[0030] Two sides in the inside of gantry 1 are respectively connected with clamping plate 5, and clamping plate 5 is fixedly connected with clamping hydraulic cylinder 6. Lifting hydraulic cylinder 2 and clamping hydraulic cylinder 6 are electrically connected to industrial control board by reversing valve. Clamping plate 5 and gantry 1 are further equipped with clamping plate seat 7, and the clamping hydraulic cylinder 6 is fixedly arranged on clamping plate seat 7, and clamping plate 5 is equipped with guide rail 8, and clamping plate seat 7 is equipped with multiple guide wheels 9 suitable for guide rail 8.

[0031] As preferred embodiment, turbine 10 is equipped in the lower part of clamping plate seat 7, and turbine 10 is engaged with worm 11, and worm 11 passes through gantry 1 and is provided with rotating handle 12 outside. Clamping hydraulic cylinder 6 and gantry 1 are connected by arc-shaped groove 13 and sliding block 14, and arc-shaped groove 13 is concentrically arranged with turbine 10, and sliding block 14 is located in arc-shaped groove 13. When worm 11 drives turbine 10 to rotate, clamping hydraulic cylinder 6 rotates together with clamping plate 5, and sliding block 14 and arc-shaped groove further stabilize structure, so that the balance weight when rotating is prevented, and clamping plate seat 7 is prevented from being bent by force when clamping hydraulic cylinder 6 works.

[0032] As a preferred embodiment, the two clamping plate seats 7 are connected by a linkage chain 15 arranged inside the gantry 1, the linkage chain 15 can be provided with an incomplete linkage tooth 16, and the clamping plate seat 7 is provided with a linkage column 17 matched with the linkage tooth 16. Specifically, the linkage column 17 is provided with another set of linkage teeth 16 on the surface. It can be understood that the precision of the linkage of the linkage chain and the linkage column through the gear meshing is more closely matched than the conventional chain and the tooth. The linkage of the two clamping plates 5 when rotating, for example, when the right clamping plate rotates clockwise by 30°, the left clamping plate also rotates clockwise by 30°. The technical effect realized is that it can cooperate with the shearing of the metal plate with changing width, and the linkage of the two clamping plates makes the two clamping plates keep parallel, and the distance between the planes where the two clamping plates are respectively located is adjusted according to the actual needs.

[0033] As a preferred embodiment, the gantry 1 is provided with a clamping block 18 at the bottom and opposite positions, and the clamping block 18 is connected with the gantry 1 through the slide rod 19 of the side gear 20. The gear 20 is engaged with the gear 21, and the gear 21 is connected with the output end of the rotating motor, and the output end of the rotating motor is electrically connected with the industrial control board. The clamping block 18 is hinged on the slide rod 19, and the side away from the hinge is provided with a spring 22, and the two ends are respectively abutted with the clamping block 18 and the slide rod 19. The slide rod 19 is also provided with a limiting block 23 to limit the excessive rotation of the clamping block 18.

[0034] As a preferred embodiment, the shearing tool 3 includes an upper shear 24 and a lower shear 25, and the lower shear 25 is embedded in a lower shear seat 26 arranged at the bottom of the gantry 1, and the lower shear seat 26 is slidably arranged on the gantry 1 through a guide rod 27. A screw rod 28 is arranged through the bottom of the gantry 1, and the lower shear seat 26 is provided with a thread matched with the screw rod 28, and the screw rod 28 is connected with a hand crank for manually adjusting the shearing gap of the shearing tool 3.

[0035] As a preferred embodiment, the clamping plate 5 and / or the clamping block 18 are provided with a pressure sensor 30 on the contact surface with the shearing tool, and the outer periphery is wrapped with a rubber plate 31, and the pressure sensor 30 is embedded therein and electrically connected with the industrial control board. The surface of the rubber plate 31 has anti-skid lines. The outer periphery of the gantry 1 is provided with a safety grating 32 electrically connected with the industrial control board.

[0036] The working principle of the utility model is that: the upper shear 24 in the shearing tool 3 is limited in the vertical direction by the sliding groove 4, which effectively reduces the deviation caused by unstable movement, and provides a basis for accurate cutting. The clamping plate 5 is used in cooperation with the clamping hydraulic cylinder 6, and is provided with a linkage mechanism. Through the driving of the clamping hydraulic cylinder 6, the clamping plate 5 can stably clamp the material, and the linkage mechanism can further adjust the angle of the clamping plate 5 according to the width of the material and the cutting demand, change the distance between the two clamping plates, so as to realize the accurate clamping of the materials with different widths, thereby improving the cutting precision.

[0037] The clamping linkage mechanism can adapt to different widths of the workpiece to be cut through the relative arrangement of the two clamping seats 7 and the linkage of the linkage chain 15, and can ensure that the center of the workpiece is always located at the shearing position of the shearing tool 3. The lower shear seat 26 can move in the front-rear direction through manual adjustment of the screw rod 28. Since the lower shear seat 26 is provided with a thread matched with the screw rod 28, when the hand crank 29 is rotated to drive the screw rod 28 to rotate, the lower shear seat 26 will move in the front-rear direction under the guidance of the guide rod 27, thereby changing the gap of the shearing tool 3 to adapt to the cutting requirements of materials with different thicknesses or materials. The industrial control board can adjust the position of the clamping block 18 as needed to realize the clamping operation of the workpiece in the front-rear direction. Specifically, the motor outputs power, which is transmitted through the meshing of the gear 21 and the rack 20 to drive the sliding rod 19 to move, so that the clamping block 18 realizes position adjustment on the sliding rod 19, and then clamps the workpiece.

[0038] The front and rear clamping blocks 18 are linked through the gear 21 and the rack 20 to ensure that the center of the workpiece is located at the shearing position of the shearing tool 3. When feeding, the workpiece can press the clamping block 18, at this time the clamping block 18 is in contact with the workpiece, but due to the hinge, the clamping block 18 can rotate to reduce the influence on the feeding of the workpiece. During shearing, the clamping block 18 is limited to rotate by the limiting block 23, thereby realizing the positioning function of the workpiece and ensuring the stability and accuracy of the cutting process.

[0039] The above is only the preferred embodiment of the present application, and those skilled in the art can make some improvements and refinements without departing from the technical principles of the present application. These improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A gantry shear with a clamping and positioning mechanism, characterized in that, The system includes a gantry frame (1), a lifting hydraulic cylinder (2) is vertically installed through the gantry frame (1), a shear (3) is connected to the bottom end of the lifting hydraulic cylinder (2), and a sliding groove (4) is vertically installed on both sides inside the gantry frame (1). The upper shear (24) in the shear (3) moves up and down along the sliding groove (4). A clamping plate (5) is connected to both sides inside the gantry frame (1), and a clamping hydraulic cylinder (6) is connected to the clamping plate (5). The lifting hydraulic cylinder (2) and the clamping hydraulic cylinder (6) are electrically connected to the industrial control board through a reversing valve.

2. The gantry shear according to claim 1, characterized in that, A clamping plate seat (7) is also provided between the clamping plate (5) and the gantry frame (1). A guide rail (8) is provided at the end of the clamping plate (5). The clamping plate seat (7) is provided with a plurality of guide wheels (9) adapted to the guide rail (8). The clamping hydraulic cylinder (6) is fixedly installed on the clamping plate seat (7).

3. The gantry shear according to claim 2, characterized in that, A turbine (10) is provided at the lower part of the clamping plate seat (7). A worm gear (11) is engaged with the turbine (10). The worm gear (11) passes through the gantry frame (1) and a rotating handle (12) is provided on its outer side. The clamping hydraulic cylinder (6) is connected to the gantry frame (1) through an arc groove (13) and a slider (14). The arc groove (13) is concentrically arranged with the turbine (10). The slider (14) is arranged in the arc groove (13). The clamping hydraulic cylinder is fixed to the clamping plate seat (7).

4. The gantry shear according to claim 3, characterized in that, Two clamping plates (7) are arranged opposite each other inside the gantry frame (1) and connected by a linkage chain (15). The linkage chain (15) has linkage teeth (16). The clamping plate (7) is provided with a linkage column (17) adapted to the linkage teeth (16). The linkage chain (15) is located inside the gantry frame (1).

5. The gantry shear according to claim 1, characterized in that, The bottom of the gantry (1) is provided with locking blocks (18) respectively in the front and rear directions. The locking blocks (18) are slidably connected to the gantry (1) in the lateral direction through the slide rod (19) with the rack (20) on the side. The rack (20) is meshed with a gear (21). The gear (21) is connected to the output end of the rotating motor. The rotating motor is electrically connected to the industrial control board.

6. The gantry shear according to claim 5, characterized in that, The locking block (18) is hinged to the slide rod (19). A spring (22) is provided on the side of the locking block (18) away from the hinge point with the slide rod (19). The two ends of the spring (22) abut against the locking block (18) and the slide rod (19) respectively. The slide rod (19) is also provided with a limiting block (23) to limit the excessive rotation of the locking block (18).

7. The gantry shear according to claim 1, characterized in that, The shears (3) include an upper shear (24) and a lower shear (25). The lower shear (25) is embedded into the bottom of the gantry frame (1) through a lower shear seat (26). The lower shear seat (26) is slidably mounted on the gantry frame (1) through a guide rod (27). A screw (28) is provided through the bottom of the gantry frame (1). The lower shear seat (26) is provided with a thread that matches the screw (28). The screw (28) is also provided with a hand crank (29).

8. The gantry shear according to claim 5, characterized in that, A pressure sensor (30) is also provided on the contact surface between the clamping plate (5) and / or the locking block (18) and the shearing component. A rubber plate (31) is provided on the outer periphery of the pressure sensor (30). The pressure sensor (30) is electrically connected to the industrial control board.

9. The gantry shear according to claim 8, characterized in that, The surface of the rubber plate (31) is provided with anti-slip texture, and the pressure sensor (30) is embedded in the clamp (5) and / or the card block (18) and the rubber plate (31).

10. The gantry shear according to claim 9, characterized in that, A safety light curtain (32) is provided on the outer periphery of the gantry frame (1), and the safety light curtain (32) is electrically connected to the industrial control board.

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