A single blade parallel cutting device for solid bars

Abstract

The present invention discloses a single-blade parallel cutting device for solid rods, belonging to the technical field of metal rod cutting. It includes a device bottom plate, a cutting bracket fixedly mounted on the device bottom plate, a cutting knife rotatably mounted on the cutting bracket, a cutting motor driving the cutting knife to rotate, a sliding member A and a sliding member B slidably mounted on the device bottom plate and located on both sides of the cutting knife axis, four locking brackets, four groups of centering locking assemblies used to lock the rod to be cut during the cutting process and arranged one-to-one with the locking brackets, a reset spring driving the sliding member A and the sliding member B away from each other, and an isobaric cutting synchronous driving assembly driving the sliding member A and the sliding member B to approach each other. The present invention is a single-blade parallel cutting device with a reasonable structure, capable of significantly improving cutting efficiency and cutting stability, and can be used for cutting solid rods.

Description

Technical Field

[0001] The invention mainly relates to the technical field of metal rod cutting, in particular to a single-blade parallel cutting device for solid rods. Background Art

[0002] The length cutting of metal bars is one of the commonly used cutting methods in metal processing. In the prior art, the cutting of solid bars is usually to fix the metal bar to be cut, and then use the feed method of the cutting knife to cut the metal bar. Although the prior art has achieved the cutting of solid bars, there are still certain defects: First, the feed method of the cutting knife can only cut one bar at a time, and the cutting efficiency is low; second, during the cutting process, the asymmetric cutting pressure and the eccentric cutting friction force are easy to cause the bending vibration and eccentric vibration of the cutting knife, respectively, so the vibration impact force of the cutting knife during the cutting process is more serious. Therefore, it is urgent to design a high-stability parallel cutting device for bar cutting. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in view of the technical problems existing in the prior art, the present invention provides a single-blade parallel cutting device with a reasonable structure, which can significantly improve cutting efficiency and cutting stability and can be used for cutting solid bars.

[0004] In order to solve the above problems, the present invention proposes a solution as follows: a single-blade parallel cutting device for solid bars, comprising a device bottom plate, a cutting bracket fixedly mounted on the device bottom plate, a cutting knife rotatably mounted on the cutting bracket, and a cutting motor driving the cutting knife to rotate;

[0005] The present invention further comprises: a sliding member A and a sliding member B slidably mounted on the bottom plate of the device and located on both sides of the axis of the cutting knife, four locking brackets fixedly mounted on the sliding member A and the sliding member B in groups of two, four centering locking assemblies fixedly mounted one by one on the four locking brackets, a return spring driving the sliding member A and the sliding member B away from each other, and an isobaric cutting synchronous driving assembly driving the sliding member A and the sliding member B towards each other;

[0006] The sliding member A and the sliding member B move in a direction perpendicular to the axis of the cutting knife; two of the centering locking assemblies are used to lock one rod to be cut, and the other two of the centering locking assemblies are used to lock another rod to be cut;

[0007] The isobaric cutting synchronous drive assembly drives the sliding member A and the sliding member B to move toward each other, and the cutting knife cuts two rods to be cut at the same time, and the cutting pressure between the two rods to be cut and the cutting knife remains dynamically equal.

[0008] Furthermore, the centering locking assembly includes a locking base plate fixedly mounted on the locking bracket, a placement hole opened at the center of the locking base plate to allow the rod to be cut to pass axially, three locking racks arranged at equal intervals along the circumferential direction and capable of radially sliding along the locking base plate, three locking gears, a locking gear ring rotatably mounted on the locking base plate and simultaneously meshing with the three locking gears for transmission, a locking motor driving the locking gear ring to rotate, and an elastic pad fixedly mounted on the locking rack near one end of the rod to be cut; the three locking gears are respectively meshed with the three locking racks for transmission.

[0009] Furthermore, the isobaric cutting synchronous drive assembly includes a pressurizing element and two isobaric transmission elements; the pressurizing element and the isobaric transmission element have exactly the same structure, and both include: an open cylinder fixedly mounted on the bottom plate of the equipment, an isobaric piston slidably mounted inside the open cylinder, and a piston rod having one end fixedly connected to the isobaric piston and the other end extending outward; the open ends of the three open cylinders away from the piston rod are connected by a flexible tube, and the closed space formed between the pressurizing element, the isobaric transmission element and the flexible tube is an isobaric space, which is filled with viscous fluid; the piston rods in the two isobaric transmission elements are fixedly connected to the sliding member A and the sliding member B, respectively.

[0010] Furthermore, the isobaric cutting synchronous drive assembly also includes a synchronous rack slidably mounted on the bottom plate of the equipment, a synchronous gear rotatably mounted on the bottom plate of the equipment and meshing with the synchronous rack, and a synchronous motor driving the synchronous gear to rotate; the synchronous rack is fixedly connected to the piston rod in the pressurizing element.

[0011] Furthermore, the number of the return springs is four, wherein two ends of the return springs are respectively fixedly connected to the device bottom plate and the sliding member A, and the other two ends of the return springs are respectively fixedly connected to the device bottom plate and the sliding member B.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects: a single-blade parallel cutting device for solid rods of the present invention is provided with an isobaric cutting synchronous drive component and four centering locking components, wherein the isobaric space in the isobaric cutting synchronous drive component is filled with viscous fluid, and during the cutting process, the isobaric cutting synchronous drive component drives the sliding member A and the sliding member B to move synchronously toward the cutting knife, and transmits a pair of equal-valued, opposite-collinear cutting pressures and a pair of equal-valued, opposite-parallel cutting frictions to the cutting knife from both sides, wherein the pair of equal-valued, opposite-collinear cutting pressures constitutes a pair of balancing forces, and the pair of equal-valued, opposite-parallel cutting frictions constitutes a rotational force couple, so the present invention not only eliminates the bending eccentric vibration of the cutting knife, but also improves the cutting efficiency; each centering locking component is provided with three locking racks that move synchronously in radial direction, and through the synchronous movement of the locking racks, not only can the rod to be cut be quickly locked, but also the verticality of the axis of the cutting knife and the rod to be cut can be improved, and the flatness of the cutting surface can be significantly improved; it can be seen that the present invention is a single-blade parallel cutting device with a reasonable structure, which can significantly improve the cutting efficiency and cutting stability and can be used for cutting solid rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a schematic diagram of the structural principle of a single-blade parallel cutting device for solid rods.

[0014] Figure 2 It is a schematic diagram of the relative positions of the two centering locking components on the sliding member A and the cutting knife.

[0015] Figure 3 It is a schematic diagram of the relative positions of two rods to be cut and the cutting knife.

[0016] Figure 4 It is a schematic diagram of the structural principle of the centering locking assembly of the present invention.

[0017] Figure 5 It is a schematic diagram of the structural principle of the isobaric transmission element of the present invention.

[0018] In the figure, 10 is a rod to be cut; 11 is a base plate of the equipment; 12 is a cutting bracket; 13 is a sliding member A; 14 is a sliding member B; 15 is a locking bracket; 16 is a cutting motor; 17 is a cutting knife; 2 is a centering locking assembly; 21 is a locking base plate; 210 is a placement hole; 22 is a locking gear ring; 23 is a locking rack; 24 is a locking gear; 25 is an elastic pad; 31 isobaric transmission element; 310 is an open cylinder; 311 isobaric piston; 312 isobaric piston rod; 313 isobaric fluid; 32 is a pressurizing element; 33 is a return spring; 34 is a synchronous rack; 35 isobaric gear; 36 is a synchronous motor. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the solid rod to be cut will be recorded as the rod 10 to be cut.

[0020] See also Figures 1 to 3 The present invention is a single-blade parallel cutting device for solid rods, which includes a device base plate 11, a cutting bracket 12 fixedly mounted on the device base plate 11, a cutting knife 17 rotatably mounted on the cutting bracket 12, a cutting motor 16 driving the cutting knife 17 to rotate, a sliding member A13 and a sliding member B14 slidably mounted on the device base plate 11 and located on both sides of the axis of the cutting knife 17, four locking brackets 15, four groups of centering locking assemblies 2 for locking the rod 10 to be cut during the cutting process and arranged one by one with the locking brackets 15, a reset spring 33 driving the sliding member A13 and the sliding member B14 away from each other, and an isobaric cutting synchronous drive assembly driving the sliding member A13 and the sliding member B14 to move closer to each other. The slide A13 and the slide B14 move in a direction perpendicular to the axis of the rod 10 to be cut; two locking brackets 15 are fixedly mounted on the slide A13, and two centering locking assemblies 2 fixedly mounted on the two locking brackets 15 are used to lock one rod 10 to be cut, and the other two locking brackets 15 are fixedly mounted on the slide B14, and the other two centering locking assemblies 2 fixedly mounted on the two locking brackets 15 are used to lock another rod 10 to be cut. The two rods 10 to be cut are symmetrically arranged about the axis of the cutting knife, and their center heights are equal to the center height of the cutting knife. During the cutting process, the isobaric cutting synchronous drive assembly drives the slide A13 and the slide B14 to move toward each other, and the cutting knife 17 cuts the two rods 10 to be cut at the same time, and the cutting pressure between the two rods 10 to be cut and the cutting knife 17 remains dynamically equal. During specific implementation, the length directions of sliding member A13 and sliding member B14 are parallel to the axis of the cutting knife 17, and two linear slide grooves are opened on the bottom plate 11 of the equipment along the direction perpendicular to the length direction of sliding member A13. Two rectangular sliders are slidably installed in each linear slide groove, and the two rectangular sliders in the left linear slide groove are respectively fixedly connected to the left ends of sliding member A13 and sliding member B14, and the two rectangular sliders in the right linear slide groove are respectively fixedly connected to the right ends of sliding member A13 and sliding member B14.

[0021] See also Figure 1 and Figure 4Preferably, the centering locking assembly 2 includes a locking base plate 21 fixedly mounted on the locking bracket 15, a placement hole 210 opened at the center of the locking base plate 21 to allow the rod 10 to be cut to pass axially, three locking racks 23 arranged at equal intervals along the circumferential direction and radially slidable along the locking base plate 21, three locking gears 24, a locking ring gear 22 rotatably mounted on the locking base plate 21 and internally meshing with the three locking gears 24 at the same time, a locking motor (not shown in the figure) driving the locking ring gear 22 to rotate, and an elastic pad 25 fixedly mounted on the locking rack 23 near one end of the rod 10 to be cut; the three locking gears 24 are respectively meshed with the three locking racks 23 for transmission. During specific implementation, the rod 10 to be cut is placed along a length direction parallel to the sliding member A13, and both ends pass through the placement holes 210 on the locking base plates 21 of the two centering locking assemblies 2; the locking motor (not shown in the figure) is installed on the locking base plate 21, and the output shaft of the locking motor (not shown in the figure) is directly connected to one of the locking gears 24, that is, one of the locking gears 24 is fixedly installed on the output shaft of the locking motor (not shown in the figure). When the locking motor (not shown in the figure) drives a directly connected locking gear 24 to rotate counterclockwise, the locking gear ring 22 rotates counterclockwise, thereby driving the other two locking gears 24 to rotate synchronously counterclockwise, and the locking rack 23 meshing with the locking gear 24 moves centrifugally along the radial direction of the locking base plate 21 until the three elastic pads 25 are pressed against the outer wall of the rod 10 to be cut, thereby synchronously locking the rod 10 to be cut; when the locking motor (not shown in the figure) drives a directly connected locking gear 24 to rotate clockwise, the locking gear ring 22 and the other two locking gears 24 rotate clockwise, and the three locking racks 23 move centrifugally along the radial direction of the locking base plate 21 until the three elastic pads 25 are away from the rod 10 to be cut, at which time it is convenient to take out the rod 10 to be cut from the placement hole 210.

[0022] See also Figure 1 and Figure 5Preferably, the isobaric cutting synchronous drive assembly includes a pressurizing element 32 and two isobaric transmission elements 31; the pressurizing element 32 and the isobaric transmission element 31 are identical in structure, and both include: an open cylinder 310 fixedly mounted on the equipment base plate 11, an isobaric piston 311 slidably mounted inside the open cylinder 310, and a piston rod 312 fixedly connected to the isobaric piston 311 at one end and extending outward at the other end; the isobaric cutting synchronous drive assembly also includes a synchronous rack 34 slidably mounted on the equipment base plate 11, a synchronous gear 35 rotatably mounted on the equipment base plate 11 and meshing with the synchronous rack 34, and a synchronous motor 36 driving the synchronous gear 35 to rotate; the synchronous rack 34 is fixedly connected to the piston rod 312 in the pressurizing element 32. The open ends of the three open cylinders 310 away from the piston rod 312 are connected through a flexible tube (not shown in the figure), and the closed space formed between the pressurizing element 32, the isobaric transmission element 31 and the flexible tube (not shown in the figure) is an isobaric space, which is filled with a viscous fluid 313; the piston rods 312 in the two isobaric transmission elements 31 are fixedly connected to the sliding member A13 and the sliding member B14 respectively. In specific implementation, the viscous fluid 313 is glycerin or a non-toxic suspension, and the synchronous motor 36 uses a stepping motor or a reduction motor with a worm gear, so that during the process of cutting the rod 10 to be cut, the sliding member A13 and the sliding member B14 can move synchronously towards each other at a very low speed. When the synchronous motor 36 drives the synchronous gear 35 to rotate counterclockwise, the synchronous rack 34 drives the piston rod 312 and the isobaric piston 311 in the pressurizing element 32 to move leftward, thereby pushing the viscous fluid 313 in the isobaric space to flow toward the two isobaric transmission elements 31. The piston rods 312 in the two isobaric transmission elements 31 push the sliding member A13 and the sliding member B14 to move toward the cutting blade 17. Since the viscous fluid 313 flows slowly and quasi-statically during the cutting process, the fluid pressure in the isobaric space is equal everywhere, so that the fluid transmitted to the sliding member A13 and the sliding member B14 are transmitted to the cutting blade 17. The thrusts on the movable member A13 and the sliding member B14 are equal, thereby realizing the isobaric feed of the cutting knife 17; when the sliding member A13 and the sliding member B14 approach each other, the length of the return spring 33 increases to store elastic potential energy; when the cutting is completed, the synchronous motor 36 drives the synchronous gear 35 to rotate clockwise, and the piston rod 312 and the isobaric piston 312 in the pressurizing element 32 move to the right, and the viscous fluid 313 flows from the isobaric transfer element 31 to the pressurizing element 32 under the action of the elastic potential energy of the return spring 33, and the return spring 33 pulls the sliding member A13 and the sliding member B14 away from each other.

[0023] Preferably, there are four return springs 33, of which two return springs 33 have their ends fixedly connected to the device bottom plate 11 and the sliding member A13, respectively, and the other two return springs 33 have their ends fixedly connected to the device bottom plate 11 and the sliding member B14, respectively. In specific implementation, the return springs 33 are symmetrically installed about the isobaric transmission element 31, thereby increasing the movement stability of the sliding members A13 and the sliding member B14.

[0024] The working process of the present invention is as follows: first, two rods 10 to be cut are placed in the placement holes 210 of the locking base plate 21 located on the sliding member A13 and the sliding member B14 respectively; and the cutting knife 17 is aligned with the cutting position; second, the locking motor (not shown in the figure) is started, so that the locking rack 23 moves toward the rod 10 to be cut until the elastic pad 25 is pressed against the outer wall of the rod 10 to be cut; third, the cutting motor 16 is started, and the cutting knife 17 rotates to prepare to cut the rod 10 to be cut; fourth, the synchronous motor 36 drives the synchronous gear The wheel 35 rotates counterclockwise, and the isobaric piston 311 in the pressurizing element 32 pushes the viscous fluid 313 in the isobaric space to flow toward the isobaric transmission element 31. The piston rods 312 of the two isobaric transmission elements 31 slowly extend outward, pushing the sliding member A13 and the sliding member B14 to move toward the cutting knife 17 at the same time, so that the two rods 10 to be cut maintain cutting contact with the cutting knife 17; Step 5. After the cutting is completed, the sliding member A13 and the sliding member B14 are reset, and the centering locking assembly 2 is reset, so as to take out the cut rods 10 to be cut.

[0025] The above are only specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should fall within the protection scope of the present invention.

Claims

1. A single-blade parallel cutting device for solid bars, comprising a device base plate (11), a cutting bracket (12) fixedly mounted on the device base plate (11), a cutting knife (17) rotatably mounted on the cutting bracket (12), and a cutting motor (16) for driving the cutting knife (17) to rotate; characterized in that: Also includes A sliding member A (13) and a sliding member B (14) slidably mounted on the bottom plate (11) of the device and located on both sides of the axis of the cutting blade (17), four locking brackets (15) fixedly mounted on the sliding member A (13) and the sliding member B (14) in groups of two, four centering locking components (2) fixedly mounted one by one on the four locking brackets (15), a return spring (33) for driving the sliding member A (13) and the sliding member B (14) away from each other, and an isobaric cutting synchronous drive component for driving the sliding member A (13) and the sliding member B (14) towards each other; The sliding member A (13) and the sliding member B (14) move in a direction perpendicular to the axis of the cutting knife (17); two of the centering locking assemblies (2) are used to lock one rod (10) to be cut, and the other two of the centering locking assemblies (2) are used to lock another rod (10) to be cut; The isobaric cutting synchronous drive assembly drives the sliding member A (13) and the sliding member B (14) to move towards each other, and the cutting knife (17) cuts two rods to be cut (10) at the same time, and the cutting pressure between the two rods to be cut (10) and the cutting knife (17) remains dynamically equal; The isobaric cutting synchronous drive assembly comprises a pressurizing element (32) and two isobaric transmission elements (31); the pressurizing element (32) and the isobaric transmission element (31) are identical in structure, and both comprise: an open cylinder (310) fixedly mounted on the bottom plate (11) of the device, an isobaric piston (311) slidably mounted inside the open cylinder (310), and a piston rod (312) having one end fixedly connected to the isobaric piston (311) and the other end extending outward; the open ends of the three open cylinders (310) away from the piston rod (312) are connected via a flexible tube, and the closed space formed between the pressurizing element (32), the isobaric transmission element (31) and the flexible tube is an isobaric space, and the isobaric space is filled with a viscous fluid (313); the piston rods (312) in the two isobaric transmission elements (31) are fixedly connected to the sliding member A (13) and the sliding member B (14), respectively; The isobaric cutting synchronous drive assembly further comprises a synchronous rack (34) slidably mounted on the device base plate (11), a synchronous gear (35) rotatably mounted on the device base plate (11) and meshing with the synchronous rack (34), and a synchronous motor (36) driving the synchronous gear (35) to rotate; the synchronous rack (34) is fixedly connected to a piston rod (312) in the pressure element (32).

2. A single-blade parallel cutting device for solid bars according to claim 1, characterized in that: The centering locking assembly (2) comprises a locking base plate (21) fixedly mounted on the locking bracket (15), a placement hole (210) provided at the center of the locking base plate (21) for allowing the rod (10) to be cut to pass axially therethrough, three locking racks (23) arranged at equal intervals in the circumferential direction and capable of radially sliding along the locking base plate (21), a locking ring gear (22) rotatably mounted on the locking base plate (21) by three locking gears (24) and simultaneously meshing with the three locking gears (24) for transmission, a locking motor for driving the locking ring gear (22) to rotate, and an elastic pad (25) fixedly mounted on the locking rack (23) near one end of the rod (10) to be cut; the three locking gears (24) respectively mesh with the three locking racks (23) for transmission.

3. A single blade parallel cutting device for solid bars according to claim 1, characterized in that: The number of the return springs (33) is four, wherein two ends of the return springs (33) are respectively fixedly connected to the device bottom plate (11) and the sliding member A (13), and the other two ends of the return springs (33) are respectively fixedly connected to the device bottom plate (11) and the sliding member B (14).

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