Angle steel numerical control opening and closing angle device

Abstract

The present invention discloses a CNC opening and closing angle device for angle steel, and relates to the technical field of stamping equipment. It comprises a frame, a working chamber is provided in the middle of the frame, a fixed frame is provided in the upper part of the inner cavity of the working chamber, and the upper die angle adjustment component is provided in the middle of the fixed frame, a support frame is fixedly provided in the lower part of the inner cavity of the working chamber, and a lower die angle adjustment component is provided in the middle of the support frame, and an angle detection component is provided on one side of the upper die angle adjustment component and the lower die angle adjustment component, and the angle detection component can detect the moving angle of the upper die angle adjustment component and the lower die angle adjustment component. The upper die angle adjustment component and the lower die angle adjustment component can cooperate with each other to press the opening and closing angles of angle steels at different angles, and there is no need to replace the upper and lower dies for pressing different angles, thereby improving work efficiency, and the angle detection component can control the opening and closing angles of the angle steel pressed by the upper die angle adjustment component and the lower die angle adjustment component, and no manual operation is required, thereby further improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of stamping equipment, in particular to a numerically controlled opening and closing angle device for angle steels. Background Art

[0002] In the field of power transmission towers, angle steels are required to be used on a large scale. When the angle steels are connected to form towers, the angle steels are processed for opening and closing angles according to the needs of the connection positions. The existing angle steel opening and closing angle processing devices generally use upper and lower molds for cooperation. The relative surfaces of the upper and lower molds have specific angles. When the corresponding surfaces of the angle steel are pressed by the molds, they will deform, thereby achieving the purpose of opening and closing angles. However, since the upper and lower molds are mostly fixed in structure and fixed on the frame, when opening and closing angles of angle steels at different angles, it is often necessary to replace the upper and lower molds with different angles, which causes inconvenience in work and affects work efficiency.

[0003] Therefore, we make improvements to this and propose a CNC opening and closing angle device for angle steel. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a CNC opening and closing angle device for angle steels, which solves the problem in the prior art that when opening and closing angle steels at different angles, it is necessary to replace upper and lower molds of different angles, causing inconvenience in work and affecting work efficiency.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an angle steel numerical control opening and closing angle device, comprising a frame, a working chamber is arranged in the middle of the frame, a fixed frame is arranged on the upper part of the inner cavity of the working chamber so as to move up and down through a clamping oil cylinder, an upper die angle adjustment component is arranged in the middle of the fixed frame, the fixed frame and the upper die angle adjustment component are fixedly connected with the piston rod of the clamping oil cylinder through a bottom plate, the fixed frame and the upper die angle adjustment component are fixed to the lower part of the bottom plate, and the clamping oil cylinder is fixedly arranged on the upper part of the frame;

[0006] A support frame is fixedly provided at the lower part of the inner cavity of the working chamber, a lower mold angle adjustment component is provided at the middle part of the support frame, and the lower mold angle adjustment component is fixedly provided at the lower part of the inner cavity of the working chamber;

[0007] An angle detection component is provided on one side of the upper die angle adjustment component and the lower die angle adjustment component, and the angle detection component can detect the moving angle of the upper die angle adjustment component and the lower die angle adjustment component;

[0008] An angle steel is placed on the upper part of the support frame, and the fixing frame squeezes the inner wall of one side of the angle steel onto the support frame through a clamping cylinder;

[0009] The upper die angle adjustment component and the lower die angle adjustment component clamp and fix the inner and outer wall surfaces of the other side wall of the angle steel;

[0010] The upper die angle adjustment component and the lower die angle adjustment component cooperate to open and close the angle of the angle steel. The upper die angle adjustment component pushes forward while the lower die angle adjustment component retreats. The pressure of the upper die angle adjustment component is used to press the wall surface of the angle steel, and the lower die angle adjustment component serves as a base plate for support.

[0011] As a preferred solution, the support frame includes a support plate and a support seat, two support seats are provided, and the support seats are symmetrically arranged at the lower parts of both ends of the support plate. The support plate is a V-shaped plate structure, and the inner cavity of the support plate is arranged toward the upper part of the inner cavity of the working chamber;

[0012] The support plate is provided with an opening and closing groove on one side wall close to the outer side of the working chamber, and the lower mold angle adjustment component is arranged at the lower part of the support plate, and the front end of the lower mold angle adjustment component is movably arranged in the opening and closing groove.

[0013] As a preferred solution, the lower die angle adjustment component includes a lower fixed plate, a lower slider seat, a lower slider and a lower slider oil cylinder, the lower fixed plate is fixedly arranged at the bottom of the working chamber, the lower slider seat is fixedly arranged at the front end of the lower fixed plate, the lower slider is slidably arranged on the lower slider seat, the bottom of the lower slider oil cylinder is hingedly arranged at the end of the lower fixed plate, and the piston rod of the lower slider oil cylinder is hingedly arranged with the rear part of the lower slider;

[0014] The upper surface of the lower slider seat is an inner arc-shaped sliding surface structure, the lower surface of the lower slider is an outer arc-shaped sliding surface structure, and the lower surface of the lower slider is slidably arranged on the upper surface of the lower slider seat;

[0015] The upper surface of the lower slider is an inclined structure, and the upper surface of the lower slider can be arranged in close contact with the outer wall of the angle steel;

[0016] The lower slider is moved along the upper surface of the lower slider seat by the lower slider oil cylinder and is arranged in the opening and closing groove;

[0017] The side walls of the lower slider seat are symmetrically provided with fixed slide grooves A, which are arc-shaped grooves. The curvature of the fixed slide groove A is the same as the curvature of the upper surface of the lower slider seat, and the inner arc surface of the fixed slide groove A is arranged toward the upper surface of the lower slider seat;

[0018] The side walls on both sides of the lower slider are symmetrically fixed with fixed slides A, which are fan-shaped plate structures. The outer ring of the fixed slide A is fixed with a fixed slide bar A on the side wall close to the fixed slide groove A. The shape and size of the fixed slide bar A are the same as those of the fixed slide groove A. The fixed slide bar A is tightly fitted and movably arranged in the fixed slide groove A.

[0019] As a preferred solution, the fixing frame includes a sliding seat and a pressing plate, two sliding seats are provided, the two sliding seats are fixedly arranged at both ends of the pressing plate, the pressing plate is obliquely arranged at the upper part of the side of the support plate away from the joint groove, and the pressing plate can press and fix one side wall of the angle steel to the inner wall of the side of the support plate away from the joint groove;

[0020] The side walls of the working chamber are symmetrically provided with slide blocks, and a sliding plate is fixedly provided on one side of the sliding seat close to the slide block. The sliding plate is fitted and slidably inserted in the inner cavity of the slide block.

[0021] As a preferred solution, the slide block includes an L-shaped plate, two L-shaped plates are provided, the two L-shaped plates are symmetrically arranged, one side wall of the L-shaped plate is fixedly connected to the inner wall of the working chamber, the other side walls of the two L-shaped plates are relatively arranged, and the inner cavity of the two L-shaped plates constitutes the inner cavity of the slide block for inserting the slide plate.

[0022] As a preferred solution, the front end of the upper die angle adjustment component is arranged in close contact with the middle of the upper surface of the pressing plate, and the upper die angle adjustment component and the lower die angle adjustment component are arranged to overlap each other.

[0023] The upper die angle adjustment component comprises an upper fixed plate, an upper slider seat, an upper slider and an upper slider oil cylinder, wherein the upper fixed plate is fixed to the lower surface of the bottom plate, the upper slider seat is fixedly arranged at the front end of the lower surface of the upper fixed plate, the upper slider is slidably arranged on the upper slider seat, the bottom of the upper slider oil cylinder is hingedly arranged at the end of the lower surface of the upper fixed plate, and the piston rod of the upper slider oil cylinder is hingedly arranged with the rear part of the upper slider;

[0024] The lower surface of the upper slider seat is an inner arc-shaped sliding surface structure, the upper surface of the upper slider is an outer arc-shaped sliding surface structure, and the upper surface of the upper slider is slidably arranged on the lower surface of the upper slider seat;

[0025] The front side wall of the upper slider is a plane structure, and the front side wall of the upper slider can be arranged in close contact with the inner wall of the angle steel. The upper slider cooperates with the lower slider to clamp and fix the side wall of the angle steel located on one side of the opening and closing groove;

[0026] The side walls of the upper slider seat are symmetrically provided with fixed slide grooves B, which are arc-shaped grooves. The curvature of the fixed slide groove B is the same as the curvature of the lower surface of the upper slider seat, and the inner arc surface of the fixed slide groove B is arranged toward the lower surface of the upper slider seat;

[0027] The side walls on both sides of the upper slider are symmetrically fixed with fixed slides B, which are fan-shaped plate structures. The outer ring of the fixed slide B is fixed with a fixed slide bar B on the side wall close to the fixed slide groove B. The shape and size of the fixed slide bar B are the same as those of the fixed slide groove B. The fixed slide bar B is tightly fitted and slidably arranged in the fixed slide groove B.

[0028] As a preferred solution, the rear side wall of the upper slider is an inclined structure, a limit strip is provided at the bottom of the rear side wall of the upper slider, and the front side wall of the limit strip is overlapped with the front side wall of the upper slider;

[0029] The rear side wall of the limiting strip can be arranged in close contact with the side wall of the pressing plate close to the supporting plate, and the limiting strip can limit the retraction displacement stroke of the upper sliding block.

[0030] As a preferred solution, two angle detection components are provided, and the two angle detection components are respectively arranged on one side of the upper mold angle adjustment component and the lower mold angle adjustment component;

[0031] The angle detection component includes an arc-shaped rack, a gear, a connecting plate, an encoder, a torsion bar and a fixed seat. The arc-shaped racks of the two angle detection components are respectively fixed on the outer surfaces of the fixed slide A on the side of the lower slider and the fixed slide B on the side of the upper slider. The gear is meshed with the arc-shaped rack. The gear is arranged at the lower part of the arc-shaped rack. The encoder is fixed at the front end of the connecting plate. The gear is fixedly connected to the rotating shaft of the encoder. The front end of the torsion bar is fixed at the end of the connecting plate. The end of the torsion bar is fixed on the fixed seat. The fixed seats of the two angle detection components are respectively fixed on the lower fixed plate and the upper fixed plate.

[0032] As a preferred solution, the torsion bar comprises a fixed rod, a sleeve rod and a double torsion spring, the end of the fixed rod is fixed to the fixed seat, the front end of the sleeve rod is fixed to the end of the connecting plate, the front end of the fixed rod is provided with an insertion column, the end of the sleeve rod is provided with a sleeve hole, and the insertion column is inserted into the sleeve hole;

[0033] The front end of the fixing rod and the outer wall of the end of the sleeve rod are fixedly sleeved with a fixing ring, the outer wall of the fixing ring is provided with a fixing hole, the double torsion spring is sleeved between the fixing rod and the fixing ring of the sleeve rod, and the torsion arm of the double torsion spring is inserted into the fixing hole.

[0034] The present invention has the following beneficial effects:

[0035] The upper die angle adjustment component and the lower die angle adjustment component can cooperate with each other to press the angle steel at the opening and closing angles, and can press the angle steel opening and closing angles at different angles according to the moving distance of the upper die angle adjustment component and the lower die angle adjustment component, without the need to replace the upper and lower dies for pressing different angles, thereby improving work efficiency;

[0036] The angle detection component can control the opening and closing angles of the upper die angle adjustment component and the lower die angle adjustment component to press the angle steel without manual operation, further improving work efficiency.

[0037] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of a numerically controlled angle opening and closing device of an angle steel according to the present invention;

[0039] Figure 2 This is a schematic diagram of the support frame structure of an angle steel numerically controlled opening and closing angle device of the present invention;

[0040] Figure 3 It is a schematic structural diagram of a lower die angle adjustment component of a numerically controlled angle opening and closing device for angle steel of the present invention;

[0041] Figure 4 This is a schematic diagram of the structure of a fixing frame of an angle steel numerically controlled opening and closing angle device of the present invention;

[0042] Figure 5 It is a schematic diagram of the combined structure of an upper die angle adjustment component and a fixing frame of an angle steel numerical control opening and closing angle device of the present invention;

[0043] Figure 6 It is a schematic structural diagram of an upper die angle adjustment component of an angle steel numerically controlled opening and closing angle device of the present invention;

[0044] Figure 7 This is a schematic diagram of the structure of an angle detection component of an angle steel numerically controlled opening and closing angle device of the present invention;

[0045] Figure 8 It is a schematic diagram of the structure of the lower slider seat of an angle steel numerically controlled opening and closing angle device of the present invention;

[0046] Fig. 9 This is a schematic diagram of the structure of a lower slider of an angle steel numerically controlled opening and closing angle device of the present invention;

[0047] Fig.10 It is a schematic diagram of the structure of an upper slider seat of an angle steel numerically controlled opening and closing angle device of the present invention;

[0048] Fig.11 It is a schematic diagram of the structure of an upper slider of an angle steel numerically controlled opening and closing angle device of the present invention;

[0049] Fig.12 for Figure 1 Schematic diagram of the structure with the local A enlarged;

[0050] Fig.13 It is a schematic diagram of the cross-sectional structure of a torsion bar of an angle steel numerically controlled opening and closing angle device of the present invention;

[0051] In the figure, 1, frame; 2, working chamber; 3, clamping cylinder; 4, fixing frame; 5, upper die angle adjustment component; 6, bottom plate; 7, support frame; 8, lower die angle adjustment component; 9, angle detection component; 10, angle steel; 11, support plate; 12, support seat; 13, opening and closing groove; 14, lower fixing plate; 15, lower slider seat; 16, lower slider; 17, lower slider cylinder; 18, fixed slide groove A; 19, fixed slide plate A; 20, fixed slide bar A; 21, slide seat; 22, clamping Plate; 23, slide block; 24, slide plate; 25, upper fixed plate; 26, upper slider seat; 27, upper slider; 28, upper slider cylinder; 29, fixed slide B; 30, fixed slide plate B; 31, fixed slide bar B; 32, limit bar; 33, arc-shaped rack; 34, gear; 35, connecting plate; 36, encoder; 37, torsion bar; 38, fixed seat; 39, fixed rod; 40, sleeve rod; 41, double torsion spring; 42, plug column; 43, sleeve hole; 44, fixing ring; 45, fixing hole. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] For examples, see Figures 1 to 13 The embodiment of the present invention provides a technical solution: a CNC angle opening and closing device for angle steel, comprising a frame 1, a working chamber 2 is arranged in the middle of the frame 1, a fixing frame 4 is arranged on the upper part of the inner cavity of the working chamber 2 so as to move up and down through a clamping oil cylinder 3, an upper die angle adjustment component 5 is arranged in the middle of the fixing frame 4, the fixing frame 4 and the upper die angle adjustment component 5 are fixedly connected with the piston rod of the clamping oil cylinder 3 through a bottom plate 6, the fixing frame 4 and the upper die angle adjustment component 5 fix the lower part of the bottom plate 6, and the clamping oil cylinder 3 is fixedly arranged on the upper part of the frame 1;

[0055] A support frame 7 is fixedly provided at the lower part of the inner cavity of the working chamber 2, a lower die angle adjustment component 8 is provided at the middle part of the support frame 7, and the lower die angle adjustment component 8 is fixedly provided at the lower part of the inner cavity of the working chamber 2;

[0056] An angle detection component 9 is provided on one side of the upper die angle adjustment component 5 and the lower die angle adjustment component 8, and the angle detection component 9 can detect the moving angle of the upper die angle adjustment component 5 and the lower die angle adjustment component 8;

[0057] An angle steel 10 is placed on the upper part of the support frame 7, and the fixing frame 4 squeezes the inner wall of one side of the angle steel 10 to fix it on the support frame 7 through the clamping cylinder 3;

[0058] The upper die angle adjustment component 5 and the lower die angle adjustment component 8 clamp and fix the inner and outer wall surfaces of the other side wall of the angle steel 10;

[0059] The upper die angle adjustment component 5 and the lower die angle adjustment component 8 cooperate to open and close the angle of the angle steel 10. The upper die angle adjustment component 5 pushes forward while the lower die angle adjustment component 8 retreats. The pressure of the upper die angle adjustment component 5 is used to press the wall surface of the angle steel 10, and the lower die angle adjustment component 8 serves as a base plate for support.

[0060] The support frame 7 includes a support plate 11 and a support seat 12. Two support seats 12 are provided. The support seats 12 are symmetrically arranged at the lower parts of both ends of the support plate 11. The support plate 11 is a V-shaped plate structure. The inner cavity of the support plate 11 is arranged toward the upper part of the inner cavity of the working chamber 2.

[0061] The support plate 11 has a side wall near the outside of the working chamber 2 with an opening and closing groove 13 . The lower die angle adjustment component 8 is disposed at the lower portion of the support plate 11 , and the front end of the lower die angle adjustment component 8 is movably disposed in the opening and closing groove 13 .

[0062] The lower die angle adjustment component 8 includes a lower fixed plate 14, a lower slider seat 15, a lower slider 16 and a lower slider oil cylinder 17. The lower fixed plate 14 is fixedly arranged at the bottom of the working chamber 2, the lower slider seat 15 is fixedly arranged at the front end of the lower fixed plate 14, the lower slider 16 is slidably arranged on the lower slider seat 15, the bottom of the lower slider oil cylinder 17 is hingedly arranged at the end of the lower fixed plate 14, and the piston rod of the lower slider oil cylinder 17 is hingedly arranged with the rear part of the lower slider 16;

[0063] The upper surface of the lower slider seat 15 is an inner arc-shaped sliding surface structure, and the lower surface of the lower slider 16 is an outer arc-shaped sliding surface structure. The lower surface of the lower slider 16 is slidably disposed on the upper surface of the lower slider seat 15;

[0064] The upper surface of the lower slider 16 is an inclined structure, and the upper surface of the lower slider 16 can be arranged in close contact with the outer wall of the angle steel 10;

[0065] The lower slider 16 is moved along the upper surface of the lower slider seat 15 and arranged in the opening and closing groove 13 by the lower slider oil cylinder 17;

[0066] The side walls of the lower slider seat 15 are symmetrically provided with fixed slide grooves A18, which are arc-shaped grooves. The curvature of the fixed slide groove A18 is the same as the curvature of the upper surface of the lower slider seat 15, and the inner arc surface of the fixed slide groove A18 is arranged toward the upper surface of the lower slider seat 15;

[0067] The side walls on both sides of the lower slider 16 are symmetrically fixed with fixed slides A19, which is a fan-shaped plate structure. The outer ring of the fixed slide A19 is fixed with a fixed slide bar A20 on the side wall close to the fixed slide groove A18. The shape and size of the fixed slide bar A20 are the same as those of the fixed slide groove A18, and the fixed slide bar A20 is tightly fitted and movably arranged in the fixed slide groove A18.

[0068] The fixing frame 4 includes a sliding seat 21 and a pressing plate 22. Two sliding seats 21 are provided. The two sliding seats 21 are fixedly arranged at both ends of the pressing plate 22. The pressing plate 22 is obliquely arranged at the upper part of the side of the support plate 11 away from the joint groove 13. The pressing plate 22 can press and fix one side wall of the angle steel 10 to the inner wall of the side of the support plate 11 away from the joint groove 13.

[0069] The side walls of the working chamber 2 are symmetrically provided with slide blocks 23 , and a slide plate 24 is fixedly provided on one side of the sliding seat 21 close to the slide block 23 . The slide plate 24 is slidably inserted in the inner cavity of the slide block 23 .

[0070] The slide block 23 includes an L-shaped plate, and two L-shaped plates are provided. The two L-shaped plates are symmetrically arranged, and one side wall of the L-shaped plate is fixedly connected to the inner wall of the working chamber 2, and the other side walls of the two L-shaped plates are relatively arranged. The inner cavity of the two L-shaped plates constitutes the inner cavity of the slide block 23 for inserting the slide plate 24.

[0071] The front end of the upper die angle adjustment component 5 is arranged in close contact with the middle of the upper surface of the pressing plate 22, and the upper die angle adjustment component 5 and the lower die angle adjustment component 8 are arranged to overlap each other.

[0072] The upper die angle adjustment component 5 includes an upper fixed plate 25, an upper slider seat 26, an upper slider 27 and an upper slider oil cylinder 28. The upper fixed plate 25 is fixed to the lower surface of the bottom plate 6. The upper slider seat 26 is fixedly arranged at the front end of the lower surface of the upper fixed plate 25. The upper slider 27 is slidably arranged on the upper slider seat 26. The bottom of the upper slider oil cylinder 28 is hingedly arranged at the end of the lower surface of the upper fixed plate 25. The piston rod of the upper slider oil cylinder 28 is hingedly arranged with the rear part of the upper slider 27.

[0073] The lower surface of the upper slider seat 26 is an inner arc-shaped sliding surface structure, and the upper surface of the upper slider 27 is an outer arc-shaped sliding surface structure. The upper surface of the upper slider 27 is slidably disposed on the lower surface of the upper slider seat 26;

[0074] The front side wall of the upper slider 27 is a planar structure, and the front side wall of the upper slider 27 can be arranged in close contact with the inner wall of the angle steel 10. The upper slider 27 cooperates with the lower slider 16 to clamp and fix the side wall of the angle steel 10 located on one side of the opening and closing groove 13;

[0075] The side walls of the upper slider seat 26 are symmetrically provided with fixed slide grooves B29, which are arc-shaped grooves. The curvature of the fixed slide groove B29 is the same as the curvature of the lower surface of the upper slider seat 26, and the inner arc surface of the fixed slide groove B29 is arranged toward the lower surface of the upper slider seat 26;

[0076] The side walls on both sides of the upper slider 27 are symmetrically fixed with fixed slides B30, which is a fan-shaped plate structure. A fixed slide bar B31 is fixed to the side wall of the outer ring of the fixed slide bar B30 close to the fixed slide groove B29. The shape and size of the fixed slide bar B31 are the same as those of the fixed slide groove B29, and the fixed slide bar B31 is tightly fitted and slidably arranged in the fixed slide groove B29.

[0077] The rear side wall of the upper slider 27 is an inclined structure, and a limit strip 32 is provided at the bottom of the rear side wall of the upper slider 27, and the front side wall of the limit strip 32 is arranged to overlap with the front side wall of the upper slider 27;

[0078] The rear side wall of the limiting strip 32 can be arranged in close contact with the side wall of the pressing plate 22 close to the supporting plate 11 , and the limiting strip 32 can limit the retracting displacement stroke of the upper sliding block 27 .

[0079] There are two angle detection components 9, and the two angle detection components 9 are respectively arranged on one side of the upper mold angle adjustment component 5 and the lower mold angle adjustment component 8;

[0080] The angle detection component 9 includes an arc-shaped rack 33, a gear 34, a connecting plate 35, an encoder 36, a torsion bar 37 and a fixed seat 38. The arc-shaped racks 33 of the two angle detection components 9 are respectively fixed on the outer surfaces of the fixed slide A19 on one side of the lower slider 16 and the fixed slide B30 on one side of the upper slider 27. The gear 34 is meshed with the arc-shaped rack 33. The gear 34 is arranged at the lower part of the arc-shaped rack 33. The encoder 36 is fixed at the front end of the connecting plate 35. The gear 34 is fixedly connected to the rotating shaft of the encoder 36. The front end of the torsion bar 37 is fixed at the end of the connecting plate 35. The end of the torsion bar 37 is fixed on the fixed seat 38. The fixed seats 38 of the two angle detection components 9 are respectively fixed on the lower fixed plate 14 and the upper fixed plate 25.

[0081] The torsion bar 37 includes a fixed rod 39, a sleeve rod 40 and a double torsion spring 41. The end of the fixed rod 39 is fixed to the fixed seat 38, the front end of the sleeve rod 40 is fixed to the end of the connecting plate 35, the front end of the fixed rod 39 is provided with a plug 42, the end of the sleeve rod 40 is provided with a sleeve hole 43, and the plug 42 is inserted into the sleeve hole 43;

[0082] A fixing ring 44 is fixedly sleeved on the outer wall of the front end of the fixing rod 39 and the end of the sleeve rod 40, and a fixing hole 45 is provided on the outer wall of the fixing ring 44. The double torsion spring 41 is sleeved between the fixing rod 39 and the fixing ring 44 of the sleeve rod 40, and the torsion arm of the double torsion spring 41 is inserted into the fixing hole 45.

[0083] The fixing rod 39 and the sleeve rod 40 are rotatably arranged, and the fixing rod 39, the sleeve rod 40 and the double torsion spring 41 cooperate to ensure that the gear 34 at the front end of the connecting plate 35 is always meshed with the arc-shaped rack 33.

[0084] Working principle of the present invention:

[0085] The angle steel 10 is placed on the support plate 11, the outer wall of the angle steel 10 is fitted with the inner wall of the support plate 11, the preset opening and closing angle side wall position of the angle steel 10 is placed on the upper part of the opening and closing groove 13, the clamping oil cylinder 3 drives the fixing frame 4 and the upper die angle adjustment component 5 to move downward, the clamping plate 22 of the fixing frame 4 squeezes and fixes the side wall of the angle steel 10 away from the closing groove 13 on the support plate 11, and the clamping oil cylinder 3 stops working;

[0086] The upper die angle adjustment component 5 and the lower die angle adjustment component 8 are started simultaneously;

[0087] The upper slider oil cylinder 28 is started, and the upper slider oil cylinder 28 pushes the upper slider 27 to slide on the upper slider seat 26. The front side wall of the upper slider 27 is moved to the inner wall of the angle steel 10 close to the opening and closing groove 13 by using the inner arc sliding surface structure of the lower surface of the upper slider seat 26 and the outer arc sliding surface structure of the upper surface of the upper slider 27. During the movement of the upper slider 27, the angle between the front side wall of the upper slider 27 and the inner wall of the angle steel 10 is constantly changed, so that the front side wall of the upper slider 27 fits the inner wall of the angle steel 10.

[0088] The lower slider oil cylinder 17 is started, and the lower slider oil cylinder 17 pushes the lower slider 16 to slide on the lower slider seat 15. The upper surface of the lower slider 16 is moved to the outer wall of the angle steel 10 close to the opening and closing groove 13 by using the inner arc sliding surface structure of the upper surface of the lower slider seat 15 and the outer arc sliding surface structure of the lower surface of the lower slider 16. During the movement of the lower slider 16, the angle between the upper surface of the lower slider 16 and the outer wall of the angle steel is constantly changed, so that the upper surface of the lower slider 16 fits the outer wall of the angle steel.

[0089] The upper slider oil cylinder 28 and the lower slider oil cylinder 17 stop working. At this time, the lower slider 16 is placed in the opening and closing groove 13. The lower slider 16 cooperates with the upper slider 27 to clamp the outer wall of the angle steel 10 close to the opening and closing groove 13.

[0090] Start the opening and closing action of the angle steel 10;

[0091] The upper slider oil cylinder 28 is started, and the upper slider oil cylinder 28 continues to push the upper slider 27 to squeeze the angle steel 10. At the same time, the lower slider oil cylinder 17 is started, and the lower slider oil cylinder 17 drives the lower slider 16 to retreat. In this state, the upper slider 27 and the lower slider 16 always maintain a clamping state for the angle steel 10;

[0092] When the angle steel 10 is extruded, the angle detection component 9 on one side of the upper die angle adjustment component 5 and the lower die angle adjustment component 8 detects the inclination angles of the upper slider 27 and the lower slider 16. When the inclination angles of the upper slider 27 and the lower slider 16 reach the preset angles of the encoder 36, the lower slider cylinder 17 stops working, the upper slider cylinder 28 stops pushing the upper slider 27, and starts to retract the upper slider 27 until the limit bar 32 at the bottom of the upper slider 27 retracts to the side of the clamping plate 22 close to the support plate 11, the upper slider cylinder 28 stops working, and then the clamping cylinder 3 starts, and the clamping cylinder 3 drives the fixing frame 4 and the upper die angle adjustment component 5 to rise to the upper part of the lower die angle adjustment component 8, takes out the angle steel 10, and the work is completed.

[0093] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0094] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A numerically controlled angle opening and closing device for angle steel, characterized in that: It comprises a frame, a working chamber is arranged in the middle of the frame, a fixed frame is arranged on the upper part of the inner cavity of the working chamber so as to move up and down through a clamping oil cylinder, an upper die angle adjustment component is arranged in the middle of the fixed frame, the fixed frame and the upper die angle adjustment component are fixedly connected with the piston rod of the clamping oil cylinder through a bottom plate, the fixed frame and the upper die angle adjustment component are fixed to the lower part of the bottom plate, and the clamping oil cylinder is fixedly arranged on the upper part of the frame; A support frame is fixedly provided at the lower part of the inner cavity of the working chamber, a lower mold angle adjustment component is provided at the middle part of the support frame, and the lower mold angle adjustment component is fixedly provided at the lower part of the inner cavity of the working chamber; An angle detection component is provided on one side of the upper die angle adjustment component and the lower die angle adjustment component, and the angle detection component can detect the moving angle of the upper die angle adjustment component and the lower die angle adjustment component; An angle steel is placed on the upper part of the support frame, and the fixing frame squeezes the inner wall of one side of the angle steel onto the support frame through a clamping cylinder; The upper die angle adjustment component and the lower die angle adjustment component clamp and fix the inner and outer wall surfaces of the other side wall of the angle steel; The upper die angle adjustment component and the lower die angle adjustment component cooperate to open and close the angle of the angle steel. The upper die angle adjustment component pushes forward while the lower die angle adjustment component retreats. The pressure of the upper die angle adjustment component is used to press the wall surface of the angle steel. At the same time, the lower die angle adjustment component is used as a bottom plate for support. The lower die angle adjustment component comprises a lower fixed plate, a lower slider seat, a lower slider and a lower slider oil cylinder, wherein the lower fixed plate is fixedly arranged at the bottom of the working chamber, the lower slider seat is fixedly arranged at the front end of the lower fixed plate, the lower slider is slidably arranged on the lower slider seat, the bottom of the lower slider oil cylinder is hingedly arranged at the end of the lower fixed plate, and the piston rod of the lower slider oil cylinder is hingedly arranged with the rear part of the lower slider; The upper surface of the lower slider seat is an inner arc-shaped sliding surface structure, the lower surface of the lower slider is an outer arc-shaped sliding surface structure, and the lower surface of the lower slider is slidably arranged on the upper surface of the lower slider seat; The upper surface of the lower slider is an inclined structure, and the upper surface of the lower slider can be arranged in close contact with the outer wall of the angle steel; The lower slider is moved along the upper surface of the lower slider seat by the lower slider oil cylinder and is arranged in the opening and closing groove; The side walls of the lower slider seat are symmetrically provided with fixed slide grooves A, which are arc-shaped grooves. The curvature of the fixed slide groove A is the same as the curvature of the upper surface of the lower slider seat, and the inner arc surface of the fixed slide groove A is arranged toward the upper surface of the lower slider seat; The side walls on both sides of the lower slider are symmetrically fixed with fixed slides A, which are fan-shaped plate structures. The outer ring of the fixed slide A is fixed with a fixed slide bar A on the side wall close to the fixed slide groove A. The shape and size of the fixed slide bar A are the same as those of the fixed slide groove A. The fixed slide bar A is tightly fitted and movably arranged in the fixed slide groove A.

2. The angle steel numerical control opening and closing angle device according to claim 1, characterized in that: The support frame includes a support plate and a support seat. Two support seats are provided. The support seats are symmetrically arranged at the lower parts of both ends of the support plate. The support plate is a V-shaped plate structure. The inner cavity of the support plate is arranged toward the upper part of the inner cavity of the working chamber. The side wall of the support plate close to the outer side of the working chamber is provided with an opening and closing groove, the lower mold angle adjustment component is arranged at the lower part of the support plate, and the front end of the lower mold angle adjustment component is movably arranged in the opening and closing groove.

3. The angle steel numerical control opening and closing angle device according to claim 1, characterized in that: The fixing frame includes a sliding seat and a pressing plate. Two sliding seats are provided. The two sliding seats are fixedly arranged at both ends of the pressing plate. The pressing plate is obliquely arranged at the upper part of the side of the support plate away from the joint groove. The pressing plate can press and fix one side wall of the angle steel to the inner wall of the side of the support plate away from the joint groove. The side walls of the working chamber are symmetrically provided with slide blocks, and a sliding plate is fixedly provided on one side of the sliding seat close to the slide block. The sliding plate is fitted and slidably inserted in the inner cavity of the slide block.

4. The angle steel numerical control opening and closing angle device according to claim 3, characterized in that: The slide block includes an L-shaped plate, and two L-shaped plates are provided. The two L-shaped plates are symmetrically arranged, and one side wall of the L-shaped plate is fixedly connected to the inner wall of the working chamber. The other side walls of the two L-shaped plates are relatively arranged, and the inner cavity of the two L-shaped plates constitutes the inner cavity of the slide block for inserting the slide plate.

5. The angle steel numerical control opening and closing angle device according to claim 3, characterized in that: The front end of the upper die angle adjustment component is arranged in close contact with the middle of the upper surface of the pressing plate, and the upper die angle adjustment component and the lower die angle adjustment component are arranged to overlap each other. The upper die angle adjustment component comprises an upper fixed plate, an upper slider seat, an upper slider and an upper slider oil cylinder, wherein the upper fixed plate is fixed to the lower surface of the bottom plate, the upper slider seat is fixedly arranged at the front end of the lower surface of the upper fixed plate, the upper slider is slidably arranged on the upper slider seat, the bottom of the upper slider oil cylinder is hingedly arranged at the end of the lower surface of the upper fixed plate, and the piston rod of the upper slider oil cylinder is hingedly arranged with the rear part of the upper slider; The lower surface of the upper slider seat is an inner arc-shaped sliding surface structure, the upper surface of the upper slider is an outer arc-shaped sliding surface structure, and the upper surface of the upper slider is slidably arranged on the lower surface of the upper slider seat; The front side wall of the upper slider is a plane structure, and the front side wall of the upper slider can be arranged in close contact with the inner wall of the angle steel. The upper slider cooperates with the lower slider to clamp and fix the side wall of the angle steel located on one side of the opening and closing groove; The side walls of the upper slider seat are symmetrically provided with fixed slide grooves B, which are arc-shaped grooves. The curvature of the fixed slide groove B is the same as the curvature of the lower surface of the upper slider seat, and the inner arc surface of the fixed slide groove B is arranged toward the lower surface of the upper slider seat; The side walls on both sides of the upper slider are symmetrically fixed with fixed slides B, which are fan-shaped plate structures. The outer ring of the fixed slide B is fixed with a fixed slide bar B on the side wall close to the fixed slide groove B. The shape and size of the fixed slide bar B are the same as those of the fixed slide groove B. The fixed slide bar B is tightly fitted and slidably arranged in the fixed slide groove B.

6. The angle steel numerical control opening and closing angle device according to claim 5, characterized in that: The rear side wall of the upper slider is an inclined structure, a limit strip is provided at the bottom of the rear side wall of the upper slider, and the front side wall of the limit strip is arranged to overlap with the front side wall of the upper slider; The rear side wall of the limiting strip can be arranged in close contact with the side wall of the pressing plate close to the supporting plate, and the limiting strip can limit the retraction displacement stroke of the upper sliding block.

7. The angle steel numerical control opening and closing angle device according to claim 5, characterized in that: There are two angle detection components, and the two angle detection components are respectively arranged on one side of the upper mold angle adjustment component and the lower mold angle adjustment component; The angle detection component includes an arc-shaped rack, a gear, a connecting plate, an encoder, a torsion bar and a fixed seat. The arc-shaped racks of the two angle detection components are respectively fixed on the outer surfaces of the fixed slide A on the side of the lower slider and the fixed slide B on the side of the upper slider. The gear is meshed with the arc-shaped rack. The gear is arranged at the lower part of the arc-shaped rack. The encoder is fixed at the front end of the connecting plate. The gear is fixedly connected to the rotating shaft of the encoder. The front end of the torsion bar is fixed at the end of the connecting plate. The end of the torsion bar is fixed on the fixed seat. The fixed seats of the two angle detection components are respectively fixed on the lower fixed plate and the upper fixed plate.

8. The angle steel numerical control opening and closing angle device according to claim 7, characterized in that: The torsion bar comprises a fixed rod, a sleeve rod and a double torsion spring. The end of the fixed rod is fixed to the fixed seat, the front end of the sleeve rod is fixed to the end of the connecting plate, the front end of the fixed rod is provided with an insertion column, the end of the sleeve rod is provided with a sleeve hole, and the insertion column is inserted into the sleeve hole; The front end of the fixing rod and the outer wall of the end of the sleeve rod are fixedly sleeved with a fixing ring, the outer wall of the fixing ring is provided with a fixing hole, the double torsion spring is sleeved between the fixing rod and the fixing ring of the sleeve rod, and the torsion arm of the double torsion spring is inserted into the fixing hole.

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