Continuous bar shearing device

Abstract

The utility model discloses a bar continuous shearing device, which relates to the technical field of bar shearing, and comprises a workbench, a shearing mechanism is arranged on the workbench, the shearing mechanism is fixed on the workbench through a buffer component, the device is arranged right below a continuous casting device, bars in a vertical motion state can be directly sheared, the occupied area is small, and the shearing efficiency is high. A servo motor drives a positive and negative lead screw, the positive and negative lead screw drives a left shear knife and a right shear knife to oppositely cut the bar, the cutting force can be controlled through a torque mode of the servo motor, the application range of the cut bar is wide, a ball bearing is used for guiding, a compression spring and a buffer disc spring are buffer mechanisms, and therefore the bar can be cut conveniently. And the bar can be sheared while the drawing and casting actions of the bar are not suspended.

Description

Technical Field

[0001] The utility model relates to the technical field of bar shearing, in particular to a bar continuous shearing device. Background Art

[0002] With the widespread application of various new processes such as cold extrusion, cold die forging and precision die forging, in order to ensure the stability of the parts forming process, improve product accuracy and material utilization, the requirements for the shape, quality error and cross-sectional geometric parameters of the blank are getting higher and higher. In the machine manufacturing departments with relatively large production batches such as die forgings, roll forgings and cold and warm state extrusions, rods are the main raw materials. The raw materials are melted into liquid in the crucible in the casting furnace, and then the drawing mechanism pulls the guide rod to pull the alloy solution out of the crucible, and the rods are formed through the condensation continuous casting equipment. Rod shearing is the first process of the forging process, and the rod cutting generally adopts a mechanical shearing machine.

[0003] A Chinese patent application with authorization announcement number CN211162131U discloses a bar shearing device, including a frame, a medium frequency induction heating box, a bar pressing device and a shearing device arranged on the frame, a workbench is arranged on the upper part of the frame, the bar pressing device is arranged on the workbench, the shearing device is arranged above the bar pressing device, the output end of the medium frequency induction heating box is connected to the input end of the bar pressing device, the bar pressing device includes a shearing base, a first pressing machine and a second pressing machine, the shearing base is fixedly connected to the workbench, the first pressing machine is symmetrically arranged at the input end and the output end of the bar pressing device, the first pressing machine is fixedly connected to the shearing base, the second pressing machine is arranged in the middle of the bar pressing device, and a shearing notch is also arranged in the middle of the shearing base, the shearing notch is located between the first pressing machine and the second pressing machine at the input end of the bar pressing device, the workbench is provided with a blanking notch corresponding to the position of the shearing notch, and the blanking notch is communicated with the shearing notch. The bars are generally output vertically from the bottom of the continuous casting equipment for forming, and the existing bar shearing equipment cannot achieve the shearing of the bars under the continuous drawing motion state. Utility Model Content

[0004] In order to overcome the defect in the prior art that the bar material cannot be sheared in a continuous drawing motion state, the utility model provides a bar material continuous shearing device.

[0005] The technical solution adopted by the present utility model to solve its technical problems is as follows: A continuous bar shearing device, including a workbench, on which a shearing mechanism is provided. The shearing mechanism is fixed on the workbench through a buffer assembly. The shearing mechanism includes a buffer bottom plate, a positive and negative lead screw, and a servo motor. There are two bearing seats on the buffer bottom plate. The positive and negative lead screw is installed on the two bearing seats. On the positive and negative lead screw, there are a left mounting seat and a right mounting seat. A left shearing knife is installed on the left mounting seat, and a right shearing knife corresponding to the left shearing knife is installed on the right mounting seat. The left mounting seat and the right mounting seat are symmetrically arranged on the positive and negative lead screw. A guiding component is provided on the buffer bottom plate between the left shearing knife and the right shearing knife. The servo motor is connected to a coupling through a reducer, and the coupling is installed on the positive and negative lead screw. The buffer assembly includes a central shaft. At the top of the central shaft, an upper flange is installed. At the bottom of the central shaft, a lower limit block is provided. From top to bottom, a ball bearing, a compression spring, and a buffer disc spring are sleeved on the central shaft between the upper flange and the lower limit block.

[0006] As a further improvement of the present utility model, the workbench includes a support frame, on which a platform frame is provided. There are four upper through holes for installing the buffer assembly on the platform frame.

[0007] As a further improvement of the present utility model, shock-absorbing pads are provided at the bottom of the support frame.

[0008] As a further improvement of the present utility model, there are four lower through holes for installing the buffer assembly on the buffer bottom plate.

[0009] As a further improvement of the present utility model, the upper flange is fixed on the upper through hole of the platform frame through fixing bolts, and the ball bearing is fixed on the lower through hole of the buffer bottom plate through fixing bolts.

[0010] As a further improvement of the present utility model, both the upper flange and the lower limit block are fixed at both ends of the central shaft through locking bolts.

[0011] Compared with the prior art, the present utility model has the following beneficial effects: This equipment is arranged directly below the continuous casting equipment, and can directly shear the bar in a vertical moving state, with a small floor area and high straightness of the bar. The servo motor drives the positive and negative lead screw, and the positive and negative lead screw drives the left shearing knife and the right shearing knife to perform counter-cutting on the bar. The magnitude of the cutting force can be controlled through the torque mode of the servo motor, and the applicable range of cutting bars is wide. The ball bearing is used for guiding, and the compression spring and the buffer disc spring are buffer mechanisms, which can shear the bar without pausing the bar drawing and casting action. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following further describes the present utility model in conjunction with the drawings and specific embodiments.

[0013] Figure 1 It is a schematic structural diagram of a continuous bar shearing device of the present utility model.

[0014] Figure 2 This is a schematic structural diagram of the workbench of the present utility model.

[0015] Figure 3 This is a schematic structural diagram of the shearing mechanism of the present utility model.

[0016] Figure 4 This is a schematic structural diagram of the buffer assembly of the present utility model.

[0017] In the figure: 1, workbench; 2, shearing mechanism; 3, buffer assembly; 4, continuous casting equipment; 5, bar stock; 6, shock-absorbing backing plate; 7, support frame; 8, bench; 9, upper through hole; 10, buffer bottom plate; 11, bearing seat; 12, left and right lead screw; 13, left mounting seat; 14, right mounting seat; 15, left shearing knife; 16, right shearing knife; 17, guiding component; 18, coupling; 19, speed reducer; 20, servo motor; 21, lower through hole; 22, middle shaft; 23, upper flange; 24, lower limit block; 25, ball bearing; 26, compression spring; 27, buffer disc spring; 28, locking bolt. Specific embodiments

[0018] In order to make the technical solutions and beneficial effects of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with specific embodiments.

[0019] Refer to Figure 1 , an embodiment of the present utility model discloses a continuous bar shearing device, which includes a workbench 1. A shearing mechanism 2 is provided on the workbench 1, and the shearing mechanism 2 is fixed on the workbench 1 through a buffer assembly 3. The continuous bar shearing device is arranged in the vertical direction and can directly shear the bar in the vertical motion state. Without changing the vertical state of the bar stock, the shearing mechanism shears the bar stock. Compared with the shearing when the bar stock becomes horizontal, the equipment occupies a small area and the straightness of the bar stock is high.

[0020] Refer to Figure 2 , the workbench 1 includes a support frame 7. A bench 8 is provided on the support frame 7. Four upper through holes 9 for installing the buffer assembly 3 are provided on the bench 8. A shock-absorbing backing plate 6 is provided at the bottom of the support frame 7, so that the equipment is more stable and the stability during shearing is improved.

[0021] Refer to Figure 3, the shearing mechanism 2 includes a buffer base plate 10, a left - right screw 12 and a servo motor 20. There are two bearing seats 11 on the buffer base plate 10. The left - right screw 12 is installed on the two bearing seats 11. There are a left mounting seat 13 and a right mounting seat 14 on the left - right screw 12. A left shearing knife 15 is installed on the left mounting seat 13, and a right shearing knife 16 corresponding to the left shearing knife 15 is installed on the right mounting seat 14. The left mounting seat 13 and the right mounting seat 14 are symmetrically arranged on the left - right screw 12. A guiding component 17 is arranged on the buffer base plate 10 between the left shearing knife 15 and the right shearing knife 16. The servo motor 20 is connected to a coupling 18 through a speed reducer 19, and the coupling 18 is installed on the left - right screw 12. There are four lower through - holes 21 for installing the buffer components 3 on the buffer base plate 10. The servo motor 20 controls the rotation of the left - right screw 12 through the speed reducer 19 and the coupling 18, so that the left mounting seat 13 and the right mounting seat 14 on the left - right screw 12 approach each other. A left shearing knife 15 is installed on the left mounting seat 13, and a right shearing knife 16 corresponding to the left shearing knife 15 is installed on the right mounting seat 14. The left shearing knife 15 and the right shearing knife 16 perform a cross - cut on the bar stock 5 on the guiding component 17, and the magnitude of the cutting force can be controlled through the torque mode of the servo motor, and the applicable range of the cut bar stock is wide.

[0022] Both between the left mounting seat 13 and the left shearing knife 15, and between the right mounting seat 14 and the right shearing knife 16, are connected by a rectangular hole positioning and screw fixing method. The material of the cutting knife is selected according to the material of the bar stock to be cut, and the tool can be quickly replaced, shortening the inspection, repair and maintenance time of the tool.

[0023] Refer to Figure 4 , the buffer component 3 includes a middle shaft 22. An upper flange 23 is installed at the top of the middle shaft 22, and a lower limit block 24 is provided at the bottom of the middle shaft 22. A ball bearing 25, a compression spring 26 and a buffer disc spring 27 are sleeved on the middle shaft 22 from top to bottom between the upper flange 23 and the lower limit block 24. Both the upper flange 23 and the lower limit block 24 are fixed at both ends of the middle shaft 22 through locking bolts 28.

[0024] The upper flange 23 in the buffer component 3 is fixed on the upper through - hole 9 of the bench 8 through a fixing bolt, and the ball bearing 25 in the buffer component 3 is fixed on the lower through - hole 21 of the buffer base plate 10 through a fixing bolt. The connection between the workbench 1 and the shearing mechanism 2 is realized through the buffer component 3.

[0025] Select a compression spring 26 with a corresponding elastic coefficient according to the weight of the cutting main body mechanism. The buffer disc spring 27 is used to adjust the initial compression height of the cutting device, realizing the displacement buffer of the cutting device during cutting. The ball bearing 25 can move along the middle shaft 22, realizing the cutting of the bar stock without pausing the bar stock drawing and casting action.

[0026] It should be understood that the specific embodiments described herein are only for understanding the present utility model and are not used to limit the present utility model. All other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present utility model.

Claims

1. A continuous bar shearing device, characterized in that: It includes a workbench (1), on which a shearing mechanism (2) is provided. The shearing mechanism (2) is fixed on the workbench (1) through a buffer assembly (3). The shearing mechanism (2) includes a buffer bottom plate (10), a left - right screw (12) and a servo motor (20). There are two bearing seats (11) on the buffer bottom plate (10). The left - right screw (12) is installed on the two bearing seats (11). A left mounting seat (13) and a right mounting seat (14) are provided on the left - right screw (12). A left shearing knife (15) is installed on the left mounting seat (13), and a right shearing knife (16) corresponding to the left shearing knife (15) is installed on the right mounting seat (14). The left mounting seat (13) and the right mounting seat (14) are symmetrically arranged on the left - right screw (12). A guiding component (17) is provided on the buffer bottom plate (10) between the left shearing knife (15) and the right shearing knife (16). The servo motor (20) is connected to a coupling (18) through a speed reducer (19), and the coupling (18) is installed on the left - right screw (12). The buffer assembly (3) includes a middle shaft (22). At the top of the middle shaft (22), an upper flange (23) is installed. At the bottom of the middle shaft (22), a lower limit block (24) is provided. From top to bottom, a ball bearing (25), a compression spring (26) and a buffer disc spring (27) are sleeved on the middle shaft (22) between the upper flange (23) and the lower limit block (24).

2. The continuous bar shearing device according to claim 1, wherein: The workbench (1) includes a support frame (7). On the support frame (7), a table frame (8) is provided. There are four upper through - holes (9) on the table frame (8) for installing the buffer assembly (3).

3. The continuous bar shearing device according to claim 2, characterized in that: A shock - absorbing cushion plate (6) is provided at the bottom of the support frame (7).

4. The continuous bar shearing device according to claim 3, characterized in that: There are four lower through - holes (21) on the buffer bottom plate (10) for installing the buffer assembly (3).

5. The continuous bar shearing device according to claim 4, characterized in that: The upper flange (23) is fixed on the upper through - hole (9) of the table frame (8) through a fixing bolt, and the ball bearing (25) is fixed on the lower through - hole (21) of the buffer bottom plate (10) through a fixing bolt.

6. The continuous bar shearing device according to claim 5, characterized in that: Both the upper flange (23) and the lower limit block (24) are fixed at both ends of the middle shaft (22) through locking bolts (28).

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