A numerical control bending machine and bending method for thin plate folding processing

Abstract

The present invention relates to the technical field of bending machines, and discloses a numerical control bending machine for thin plate folding processing, including a support base. A lower die is movably connected to the upper end of the support base, and an upper die is arranged above the lower die. Pressure blocks are fixedly connected to the left and right sides of the upper die. The inside of the support base includes stress rods. The movable rod deflects together with the sleeve. At this time, when the movable rod moves upward, the top ball is driven to move upward together. When the right side of the upper die is lower than the left side of the upper die, the top ball deflects to the left at this time, thereby exerting a thrust on the stress plate on the left side, causing the stress plate to move to the side away from the top ball. At the same time, the conical block is driven to move together through the guide post, and then a driving force is exerted on the adjusting rod, causing the adjusting rod to move upward, thereby raising the left side of the lower die, enabling the upper die and the lower die to cooperate with each other and maintain relative parallelism, and achieving the effect of automatic fine adjustment when tilting occurs.

Description

Technical Field

[0001] The present invention relates to the technical field of bending machines, and particularly to a numerical control bending machine and a bending method for thin plate folding processing. Background Technique

[0002] With the development of modern industry, the processing methods of steel have been gradually innovated. Among them, the bending machine is one of them. Through the bending machine, the sheet can be bent to make various bent angles. Among them, the numerical control bending machine is relatively more intelligent.

[0003] However, when the bending machine is used for bending thin plates, if the oil injection hole of its hydraulic oil is blocked, etc., the upper die on the bending machine is likely to be deflected when moving, resulting in inconsistent left and right bending angles of the thin plate during the bending process, causing processing errors.

[0004] Therefore, the demand for high-reliability products is urgent. Therefore, we have proposed a numerical control bending machine and a bending method device for thin plate folding processing, which have the effect of making the upper die and the lower die cooperate with each other, maintaining relative parallelism, and automatically performing fine adjustment when tilting. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present invention provides a numerical control bending machine for thin plate folding processing, which has the advantages of making the upper die and the lower die cooperate with each other, maintaining relative parallelism, and automatically performing fine adjustment when tilting, and solves the above problems.

[0007] (II) Technical Solutions

[0008] To achieve the above purpose of making the upper die and the lower die cooperate with each other, maintaining relative parallelism, and automatically performing fine adjustment when tilting, the present invention provides the following technical solutions: A numerical control bending machine for thin plate folding processing includes a support base. The upper end of the support base is movably connected with a lower die. An upper die is arranged above the lower die. Pressure blocks are fixedly connected to the left and right sides of the upper die. The inside of the support base includes a stress rod. An extrusion plate is fixedly connected to the outer surface of the stress rod. A compression spring is fixedly connected to the lower end of the extrusion plate. A limiting plate is fixedly connected to the lower end of the compression spring. A fiber rope is arranged on the outer surface of the stress rod and below the compression spring. The lower end of the stress rod is fixedly connected to a guiding disc. A triggering mechanism is movably connected to the middle of the guiding disc. The other end of the guiding disc is fixedly connected to a triggering mechanism. An adjusting mechanism is arranged above the triggering mechanism.

[0009] Further, inside the triggering mechanism, there is a connecting plate. On the side of the connecting plate away from the guiding disk, there is a sleeve fixedly connected. Inside the sleeve, there is a pressing tooth fixedly installed. At both the upper and lower ends of the sleeve, there are reset springs fixedly connected. One end of each reset spring is fixedly connected to a roller A. Inside the sleeve, there is a movable rod movably connected. Through holes are provided on the outer surface of the movable rod. At the lower end of the movable rod, there is a tension rod movably connected. At the lower end of the tension rod, there is a counterweight movably connected. At the upper end of the movable rod, there is a top ball fixedly connected.

[0010] Further, inside the adjusting mechanism, there is a protective shell. Inside the protective shell, there is a stress plate. On the side of the stress plate away from the top ball, there is a guide post fixedly connected. At both the upper and lower ends of the guide post, there are rollers B movably connected. On the side of the guide post away from the stress plate, there is a conical block fixedly connected. On the side of the conical block away from the guide post, there is a support post movably connected. At the upper end of the support post, there is an adjusting rod movably connected to the upper end of the conical block.

[0011] Further, the pressure block is located at the upper end of the lower mold. The stress rods are located on the left and right sides of the lower mold. The upper ends of the stress rods are higher than the upper end of the lower mold.

[0012] Further, the lower end of the compression spring is fixedly connected inside the support seat. There are two stress rods, and they are symmetrically arranged about the center line inside the support seat.

[0013] Further, the front and rear ends of the guiding disk are movably connected inside the support seat. The guiding disk is located at the lower end of the adjusting mechanism.

[0014] Further, one end of the guiding disk away from the stress rod is fixedly connected to one end of the connecting plate away from the sleeve. There are four rollers A, which are respectively located on the left and right sides of the guiding disk. The outer diameter of the pressing tooth is smaller than the inner diameter of the through hole.

[0015] Further, the lower end of the support post is fixedly connected to the inner wall of the support seat. The upper end of the adjusting rod is fixedly connected to the lower end of the lower mold. The lower end of the adjusting rod is arc-shaped.

[0016] A method for bending thin plates, the specific steps are as follows:

[0017] S1. When starting work, when it is necessary to bend a thin plate, at this time, the upper mold moves downward, so as to fit with the lower mold. At the same time, the upper mold drives the pressure block to move downward together, exerting a pressure on the stress rods, causing the stress rods to drive the extrusion plate to move downward together, thereby exerting an extrusion force on the compression spring, causing the compression spring to be compressed under force, preparing for the reset of the stress rods. At the same time, with the assistance of the limiting plate, the stress rods move downward stably, thereby exerting a pulling force on the fiber rope, causing the fiber rope to exert an upward pulling force on the connecting plate through the guiding disk;

[0018] S2. Since there are two force-bearing rods, the connecting plate drives the sleeve to move horizontally upward as a whole. At this time, due to the elastic force between the roller A and the return spring, a certain distance is maintained between the sleeve and the movable rod to prevent the pressing tooth from inserting into the through hole.

[0019] S3. At the same time, if the upper die is in an inclined state during the downward movement, the pressure blocks on the left and right sides of the upper die exert pressure on the force-bearing rods, resulting in inconsistent displacements of the force-bearing rods, causing the left and right sides of the connecting plate to be unbalanced and the sleeve to shift.

[0020] S4. At this time, the sleeve drives the pressing tooth to insert into the through hole. When the sleeve moves upward, it drives the movable rod to move upward together. At the same time, the movable rod deflects with the sleeve. When the movable rod moves upward, it drives the top ball to move upward together.

[0021] S5. When the right side of the upper die is lower than the left side of the upper die, the top ball deflects to the left, exerting a thrust on the left force-bearing plate, causing the force-bearing plate to move away from the top ball. At the same time, it drives the conical block to move together through the guide post, and then exerts a driving force on the adjusting rod, causing the adjusting rod to move upward, thereby raising the left side of the lower die, enabling the upper die and the lower die to cooperate with each other and maintain relative parallelism, achieving the effect of automatic fine adjustment when tilting.

[0022] (III) Beneficial Effects

[0023] Compared with the prior art, the present invention provides a numerical control bending machine and a bending method for thin plate folding processing, having the following beneficial effects:

[0024] For the numerical control bending machine for thin plate folding processing, the sleeve drives the pressing tooth to insert inside. When the sleeve moves upward, it drives the movable rod to move upward together. At the same time, the movable rod deflects with the sleeve. When the movable rod moves upward, it drives the top ball to move upward together. When the right side of the upper die is lower than the left side of the upper die, the top ball deflects to the left, exerting a thrust on the left force-bearing plate, causing the force-bearing plate to move away from the top ball. At the same time, it drives the conical block to move together through the guide post, and then exerts a driving force on the adjusting rod, causing the adjusting rod to move upward, thereby raising the left side of the lower die, enabling the upper die and the lower die to cooperate with each other and maintain relative parallelism, achieving the effect of automatic fine adjustment when tilting. Description of the Drawings

[0025] Figure 1 It is a three-dimensional view of the main body structure of the present invention;

[0026] Figure 2 It is a front view of the main body structure of the present invention;

[0027] Figure 3 For the present invention inFigure 2 Partial enlarged view of the structure at position A;

[0028] Figure 4 Partial schematic view of the force-bearing rod structure of the present invention;

[0029] Figure 5 Partial schematic view of the connecting plate structure of the present invention;

[0030] Figure 6 In the present invention Figure 5 Partial enlarged view of the structure at position B;

[0031] Figure 7 Partial schematic view of the force-bearing plate structure of the present invention;

[0032] Figure 8 Partial three-dimensional view of the conical block structure of the present invention.

[0033] In the figure: 1, support base; 11, force-bearing rod; 12, extrusion plate; 13, compression spring; 14, limit plate; 15, guy wire; 16, guide disk; 17, trigger mechanism; 171, connecting plate; 172, sleeve; 173, pressing tooth; 174, return spring; 175, roller A; 176, movable rod; 177, through hole; 178, tension rod; 179, counterweight; 1710, top ball; 18, adjustment mechanism; 181, protective shell; 182, force-bearing plate; 183, guide post; 184, roller B; 185, conical block; 186, support column; 187, adjustment rod; 2, lower die; 3, upper die; 4, pressure block. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figure 1 and Figure 2 , a numerical control bending machine for thin plate folding processing, including a support base 1, a lower die 2 is movably connected to the upper end of the support base 1, an upper die 3 is arranged at the upper end of the lower die 2, and pressure blocks 4 are fixedly connected to the left and right sides of the upper die 3.

[0036] Please refer to Figure 2-4, the inside of the support base 1 includes a stress rod 11. The pressure block 4 is located at the upper end of the lower die 2. The stress rods 11 are located on the left and right sides of the lower die 2. The upper ends of the stress rods 11 are higher than the upper end of the lower die 2. An extrusion plate 12 is fixedly connected to the outer surface of the stress rod 11. A compression spring 13 is fixedly connected to the lower end of the extrusion plate 12. The lower end of the compression spring 13 is fixedly connected to the inside of the support base 1. There are two stress rods 11, and they are symmetric about the center line inside the support base 1. A limiting plate 14 is fixedly connected to the lower end of the compression spring 13. A cable 15 is arranged on the outer surface of the stress rod 11 and below the compression spring 13. A guide disk 16 is fixedly connected to the lower end of the stress rod 11. A trigger mechanism 17 is movably connected to the middle of the guide disk 16. The other end of the guide disk 16 is fixedly connected to the trigger mechanism 17. An adjusting mechanism 18 is arranged at the upper end of the trigger mechanism 17. The front and rear ends of the guide disk 16 are movably connected to the inside of the support base 1. The guide disk 16 is located below the adjusting mechanism 18.

[0037] Please refer to Figure 5 and Figure 6 , the inside of the trigger mechanism 17 includes a connecting plate 171. A sleeve 172 is fixedly connected to the side of the connecting plate 171 away from the guide disk 16. A pressure tooth 173 is fixedly installed inside the sleeve 172. Return springs 174 are fixedly connected to both the upper and lower ends of the sleeve 172. A roller A 175 is fixedly connected to one end of each return spring 174. A movable rod 176 is movably connected inside the sleeve 172. Through holes 177 are formed on the outer surface of the movable rod 176. The end of the guide disk 16 away from the stress rod 11 is fixedly connected to the end of the connecting plate 171 away from the sleeve 172. There are four rollers A 175, which are respectively located on the left and right sides of the guide disk 16. The outer diameter of the pressure tooth 173 is smaller than the inner diameter of the through hole 177. A tension rod 178 is movably connected to the lower end of the movable rod 176. A counterweight 179 is movably connected to the lower end of the tension rod 178. A top ball 1710 is fixedly connected to the upper end of the movable rod 176.

[0038] Please refer to Figure 7 and Figure 8 , the inside of the adjusting mechanism 18 includes a protective shell 181. A stress plate 182 is arranged inside the protective shell 181. A guide post 183 is fixedly connected to the side of the stress plate 182 away from the top ball 1710. Rollers B 184 are movably connected to both the upper and lower ends of the guide post 183. A conical block 185 is fixedly connected to the side of the guide post 183 away from the stress plate 182. A support post 186 is movably connected to the side of the conical block 185 away from the guide post 183. The upper end of the support post 186 is movably connected to an adjusting rod 187 at the upper end of the conical block 185. The lower end of the support post 186 is fixedly connected to the inner wall of the support base 1. The upper end of the adjusting rod 187 is fixedly connected to the lower end of the lower die 2. The lower end of the adjusting rod 187 is arc-shaped.

[0039] A thin plate bending method, the specific steps are as follows:

[0040] S1. At the start of work, when bending a thin plate is required, the upper die 3 moves downward at this time, thus fitting with the lower die 2. At the same time, the upper die 3 drives the pressure block 4 to move downward together, exerting a pressure on the stress rod 11, causing the stress rod 11 to drive the extrusion plate 12 to move downward together, thus exerting an extrusion force on the compression spring 13, causing the compression spring 13 to be compressed under force, preparing for the reset of the stress rod 11. At the same time, with the assistance of the limit plate 14, the stress rod 11 moves downward stably, thus exerting a pulling force on the cable 15, causing the cable 15 to exert an upward pulling force on the connecting plate 171 through the guide disk 16;

[0041] S2. Since there are two stress rods 11, the connecting plate 171 drives the sleeve 172 to move horizontally upward as a whole. At this time, due to the elastic force between the roller A 175 and the return spring 174, a certain distance is maintained between the sleeve 172 and the movable rod 176, preventing the pressing tooth 173 from inserting into the through hole 177;

[0042] S3. At the same time, if the upper die 3 is in an inclined state during the downward movement, the pressure of the pressure blocks 4 on both sides of the upper die 3 on the stress rod 11 causes inconsistent displacements of the stress rod 11, resulting in imbalance on both sides of the connecting plate 171, and thus causing the sleeve 172 to shift;

[0043] S4. At this time, the sleeve 172 drives the pressing tooth 173 to insert into the through hole 177. Thus, when the sleeve 172 moves upward, it drives the movable rod 176 to move upward together. At the same time, the movable rod 176 deflects together with the sleeve 172. At this time, as the movable rod 176 moves upward, it drives the top ball 1710 to move upward together;

[0044] S5. When the right side of the upper die 3 is lower than the left side of the upper die 3, at this time the top ball 1710 deflects to the left, thus exerting a thrust on the left stress plate 182, causing the stress plate 182 to move to the side away from the top ball 1710. At the same time, it drives the conical block 185 to move together through the guide post 183, and then exerts a driving force on the adjusting rod 187, causing the adjusting rod 187 to move upward, thereby raising the left side of the lower die 2, enabling the upper die and the lower die to cooperate with each other and maintain relative parallelism, achieving the effect of automatic fine adjustment when tilting.

[0045] In the description of the present invention, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "coupled", "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] All standard parts used in the present invention can be purchased from the market, and the special-shaped parts can be customized according to the description of the specification and the drawings.

[0047] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A numerical control bending machine for sheet metal folding processing, including a support base (1), characterized in that: The upper end of the support base (1) is movably connected to the lower mold (2), the upper end of the lower mold (2) is provided with an upper mold (3), and pressure blocks (4) are fixedly connected to the left and right sides of the upper mold (3). The pressure blocks (4) are located above the lower mold (2). The interior of the support base (1) includes stress rods (11) which are located on the left and right sides of the lower mold (2), and the upper ends of the stress rods (11) are higher than the upper end of the lower mold (2). An extrusion plate (12) is fixedly connected to the outer surface of the stress rod (11), a compression spring (13) is fixedly connected to the lower end of the extrusion plate (12), a limiting plate (14) is fixedly connected to the lower end of the compression spring (13), a fiber rope (15) is arranged on the outer surface of the stress rod (11) and below the compression spring (13), a guide disk (16) is fixedly connected to the lower end of the stress rod (11), a trigger mechanism (17) is movably connected to the middle of the guide disk (16), and the other end of the guide disk (16) is fixedly connected to the trigger mechanism (17). An adjusting mechanism (18) is arranged above the trigger mechanism (17). The interior of the trigger mechanism (17) includes a connecting plate (171). A sleeve (172) is fixedly connected to one side of the connecting plate (171) away from the guide disk (16). A pressing tooth (173) is fixedly installed inside the sleeve (172). Return springs (174) are fixedly connected to both the upper and lower ends of the sleeve (172). A roller A (175) is fixedly connected to one end of each return spring (174). A movable rod (176) is movably connected inside the sleeve (172). Through holes (177) are formed in the outer surface of the movable rod (176). A tension rod (178) is movably connected to the lower end of the movable rod (176). A counterweight (179) is movably connected to the lower end of the tension rod (178). A top ball (1710) is fixedly connected to the upper end of the movable rod (176). The interior of the adjusting mechanism (18) includes a protective shell (181). A stress plate (182) is arranged inside the protective shell (181). A guide post (183) is fixedly connected to one side of the stress plate (182) away from the top ball (1710). Rollers B (184) are movably connected to both the upper and lower ends of the guide post (183). A conical block (185) is fixedly connected to one side of the guide post (183) away from the stress plate (182). A support post (186) is movably connected to one side of the conical block (185) away from the guide post (183). An adjusting rod (187) is movably connected to the upper end of the support post (186) and above the conical block (185).

2. The numerical control bending machine for sheet metal folding processing according to claim 1, characterized in that: The lower end of the compression spring (13) is fixedly connected to the interior of the support base (1). There are two stress rods (11), which are symmetrically arranged about the central axis inside the support base (1).

3. The numerical control bending machine for sheet metal folding processing according to claim 1, characterized in that: The front and rear ends of the guide disk (16) are movably connected to the interior of the support base (1), and the guide disk (16) is located below the adjusting mechanism (18).

4. The numerical control bending machine for sheet metal folding processing according to claim 1, characterized in that: One end of the guide plate (16) away from the stress rod (11) is fixedly connected to one end of the connecting plate (171) away from the sleeve (172). There are four roller A (175), which are respectively located on the left and right sides of the guide plate (16). The outer diameter of the pressing teeth (173) is smaller than the inner diameter of the through hole (177).

5. The numerical control bending machine for sheet metal folding processing according to claim 1, characterized in that: The lower end of the support column (186) is fixedly connected to the inner wall of the support seat (1). The upper end of the adjusting rod (187) is fixedly connected to the lower end of the lower die (2). The lower end of the adjusting rod (187) is arc-shaped.

6. A sheet metal bending method for the numerical control bending machine for sheet metal folding processing according to claim 1, the specific steps are as follows: S1. When starting work, when it is necessary to bend the sheet metal, at this time, the upper die (3) moves downward, so as to fit with the lower die (2). At the same time, the upper die (3) drives the pressure block (4) to move downward together, applying a pressure to the force-bearing rod (11), so that the force-bearing rod (11) drives the extrusion plate (12) to move downward together, thereby applying an extrusion force to the compression spring (13), causing the compression spring (13) to be compressed by the force, preparing for the reset of the force-bearing rod (11). At the same time, with the assistance of the limit plate (14), the force-bearing rod (11) moves downward stably, thereby applying a pulling force to the fiber rope (15), so that the fiber rope (15) applies an upward pulling force to the connecting plate (171) through the guide disk (16); S2. Since there are two force-bearing rods (11), the connecting plate (171) drives the sleeve (172) to move horizontally upward as a whole. At this time, due to the elastic force between the roller A (175) and the return spring (174), a certain distance is maintained between the sleeve (172) and the movable rod (176), preventing the pressing teeth (173) from inserting into the through hole (177); S3. At the same time, if the upper die (3) is in an inclined state during the downward movement process, the pressure of the pressure blocks (4) on the left and right sides of the upper die (3) on the force-bearing rod (11) causes the displacement of the force-bearing rod (11) to be inconsistent, resulting in the left and right imbalance of the connecting plate (171), and thus causing the sleeve (172) to shift; S4. At this time, the sleeve (172) drives the pressing tooth (173) to insert into the through hole (177). Thus, when the sleeve (172) moves upward, it drives the movable rod (176) to move upward together. At the same time, the movable rod (176) deflects along with the sleeve (172). At this time, when the movable rod (176) moves upward, it drives the top ball (1710) to move upward together; S5. When the right side of the upper die (3) is lower than the left side of the upper die (3), at this time, the top ball (1710) deflects to the left, thus having a thrust on the left force receiving plate (182), causing the force receiving plate (182) to move away from the top ball (1710). At the same time, it drives the conical block (185) to move together through the guide post (183), and then has a driving force on the adjusting rod (187), causing the adjusting rod (187) to move upward, thereby raising the left side of the lower die (2), enabling the upper die and the lower die to cooperate with each other and remain relatively parallel, and achieving the effect of automatic fine adjustment when tilting occurs.

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