Novel radial extruding machine for reinforcing steel bars

Abstract

The utility model provides a novel radial extruding machine for reinforcing steel bars. The novel radial extruding machine comprises a rack, an operation table plate fixedly arranged on the rack and an extruding mechanism fixedly arranged on the operation table plate, the extrusion mechanism comprises a bottom plate fixed to the operation table plate, a door-shaped support fixed to the bottom plate and an oil cylinder vertically and downwards fixed to the inner top of the door-shaped support. The oil cylinder is cylindrical, and the bottom of a piston rod of the oil cylinder is fixedly connected with a middle plate; a mold mounting plate is fixedly mounted at the bottom of the middle plate, an upper mold is fixedly mounted at the bottom of the mold mounting plate, a lower mold is fixedly mounted on the bottom plate, and the upper mold and the lower mold are oppositely arranged up and down. According to the utility model, the cylindrical oil cylinder is adopted, and the top of the cylindrical oil cylinder is contacted and fixed with the inner top of the door-shaped bracket, so that the stress on the top of the cylindrical oil cylinder is more uniform during working, and the problem of oil leakage caused by welding seam cracking due to long-time use of the original flange type oil cylinder is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar thread end processing, and particularly relates to a novel radial steel bar extruder. Background Art

[0002] As one of the main processes in the steel bar mechanical connection technology, the steel bar thread end processing technology has always been the focus of attention. At present, there are two methods for processing steel bar thread ends: the direct rolling of straight steel bar threads and the peeling and rolling of straight steel bar threads. However, both of these processing technologies have their own disadvantages. Among them, in the direct rolling of straight steel bar threads, since the longitudinal and transverse ribs of the steel bar are not processed and directly rolled into shape, the loss of the rollers is very large, seriously shortening the service life of the rollers, thus virtually increasing the processing cost of the steel bar thread ends; while in the peeling and rolling of straight steel bar threads, since the longitudinal and transverse ribs of the steel bar are damaged and the cross-sectional area of the steel bar is reduced, the tensile strength of the steel bar thread ends is reduced to a certain extent.

[0003] In view of the disadvantages of the above two processing technologies, the applicant designed a radial steel bar extruder (patent number: 202022646917.2). This extruder can automatically rotate and extrude and shape the steel bar, which can not only solve the problem of inconsistent steel bars from different manufacturers, but also extend the service life of the rollers. The oil cylinder of this extruder adopts a flange type and is fixed on the upper plate through multiple columns. The oil cylinder is connected and stressed with the upper plate through a flange. The applicant found in the actual use process of this extruder that due to long-term extrusion stress on the upper plate and the oil cylinder, the flange of the oil cylinder will crack and leak oil, and the oil cylinder needs to be repaired and replaced, which not only affects the project progress but also virtually increases the cost. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a novel radial steel bar extruder in view of the deficiencies of the prior art, so as to solve the oil leakage problem existing in the existing extruder.

[0005] To solve the above technical problem, the content of the utility model includes:

[0006] A novel radial steel bar extruder, comprising a frame, an operating table plate fixedly arranged on the frame, and an extrusion mechanism fixedly arranged on the operating table plate; the extrusion mechanism includes a bottom plate fixedly arranged on the operating table plate, a gantry bracket fixedly arranged on the bottom plate, and an oil cylinder fixedly arranged vertically downward at the inner top of the gantry bracket; the oil cylinder is cylindrical, and the bottom of its piston rod is fixedly connected with a middle plate; a die mounting plate is fixedly installed at the bottom of the middle plate, an upper die is fixedly installed at the bottom of the die mounting plate, a lower die is fixedly installed on the bottom plate, and the upper die and the lower die are arranged opposite to each other up and down.

[0007] Further, the portal frame includes two U-shaped frames that are fixedly arranged on the operation table board at intervals in the front and back, and the openings of the U-shaped frames face downward; clamping plates are fixedly arranged at the left and right ends between the two U-shaped frames, and a support plate is fixedly arranged at the top between the two U-shaped frames. The top of the oil cylinder is fixedly connected to the support plate through a plurality of bolts.

[0008] Further, the clamping plate includes an upper clamping plate and a lower clamping plate that are arranged at intervals up and down, and the front and back ends of the upper clamping plate and the lower clamping plate are respectively fixedly connected to the front and back two U-shaped frames through a plurality of bolts.

[0009] Further, the support plate is a T-shaped plate; the top end of the support plate is placed on the two U-shaped frames, and the bottom end of the support plate is clamped between the two U-shaped frames.

[0010] Further, both ends of the middle plate extend outwards on both sides to be provided with limit blocks, and the limit blocks are slidably arranged between the two U-shaped frames.

[0011] Further, a pair of L-shaped die pressing bars that are arranged opposite to each other left and right are respectively arranged at the bottom of the die mounting plate and the top of the bottom plate, and the upper die and the lower die are respectively fixed on the die mounting plate and the bottom plate through the corresponding pair of die pressing bars.

[0012] Further, a control mechanism is arranged on the operation table board. The control mechanism includes a PLC and a touch screen connected to the PLC, and the PLC is connected to the oil cylinder through a hydraulic mechanism.

[0013] Further, a limit mounting plate is fixedly arranged on one side of the bottom end of the portal frame. An upper limit switch and a lower limit switch are installed on the limit mounting plate, and both the upper limit switch and the lower limit switch are connected to the PLC of the control mechanism; an upper limit contact and a lower limit contact that can respectively trigger the upper limit switch and the lower limit switch are installed on the side of the middle plate.

[0014] Further, a foot switch is arranged at the bottom of the frame, and the foot switch is connected to the PLC of the control mechanism.

[0015] Further, a steel bar bracket is fixedly arranged at the front end of the operation table board; the steel bar bracket includes a liftable support rod, a U-shaped seat fixedly arranged at the top of the support rod, and a V-shaped roller installed on the U-shaped seat.

[0016] The beneficial effects of the present utility model are:

[0017] The utility model solves the problem of oil leakage caused by weld cracking of the original flange-type oil cylinder due to long-term use by changing the original flange-type oil cylinder into a cylindrical oil cylinder and fixing the top of the cylindrical oil cylinder in contact with the inner top of the gantry bracket. When working, the force on the top of the cylindrical oil cylinder is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 is a front view of the utility model;

[0020] Figure 3 is a structural schematic diagram of the new structure oil cylinder of the utility model;

[0021] Figure 4 is a structural schematic diagram of the middle plate of the utility model.

[0022] In the figure: 1, frame; 2, operation table board; 3, bottom board; 4, U-shaped frame; 5, lower clamping plate; 6, upper clamping plate; 7, support plate; 8, oil cylinder; 9, limit mounting plate; 10, downward limit switch; 11, middle plate; 12, mold mounting plate; 13, mold pressing strip; 14, upper mold; 15, lower mold. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] For the convenience of understanding the utility model, the following further detailed description of the utility model is given in conjunction with the drawings and specific embodiments. Those skilled in the art should understand that the embodiments are only for helping to understand the utility model and should not be regarded as specific limitations of the utility model.

[0024] As Figure 1 , 2 shown, the utility model provides a new type of radial extrusion machine for steel bars, including a frame 1, an operation table board 2 fixedly arranged on the frame 1, and an extrusion mechanism fixedly arranged on the operation table board 2; the extrusion mechanism includes a bottom board 3 fixedly arranged on the operation table board 2, a gantry bracket fixedly arranged on the bottom board 3, and an oil cylinder 8 vertically and downwardly fixedly arranged on the inner top of the gantry bracket; the oil cylinder 8 is cylindrical, and the bottom of its piston rod is fixedly connected with a middle plate 11; a mold mounting plate 12 is fixedly arranged at the bottom of the middle plate 11, an upper mold 14 is fixedly arranged at the bottom of the mold mounting plate 12, a lower mold 15 is fixedly arranged on the bottom board 3, and the upper mold 14 and the lower mold 15 are arranged opposite to each other up and down.

[0025] The gantry support includes two U-shaped frames 4 that are fixed to the operating table board 2 at intervals in the front and rear, and the openings of the U-shaped frames 4 face downward; clamping plates are fixedly arranged at the left and right ends between the two U-shaped frames 4, and a support plate 7 is fixedly arranged at the top between the two U-shaped frames 4. The top of the oil cylinder 8 is fixedly connected to the support plate 7 through a plurality of bolts. The clamping plate includes an upper clamping plate 6 and a lower clamping plate 5 that are arranged at intervals up and down, and the front and rear ends of the upper clamping plate 6 and the lower clamping plate 5 are respectively fixedly connected to the front and rear two U-shaped frames 4 through a plurality of bolts.

[0026] The support plate 7 is a T-shaped plate; the top end of the support plate 7 is placed on the two U-shaped frames 4, and the bottom end of the support plate 7 is clamped between the two U-shaped frames 4. The top end of the support plate 7 is fixedly connected to the tops of the two U-shaped frames through bolts.

[0027] As Figure 3 shown, the outer part of the cylinder body of the oil cylinder 8 is cylindrical, and a row of threaded holes is arranged along the left and right directions at the top of the oil cylinder 8. As Figure 1 shown, a row of bolt through-holes is correspondingly arranged along the left and right directions on the support plate 7, and the bottom of the support plate 7 does not exceed the inner top of the gantry support. The top of the oil cylinder 8 is fixedly connected to the support plate 7 by using a plurality of bolts. The top of the oil cylinder 8 contacts the inner top of the U-shaped frame 4, and the oil cylinder 8 is fastened to the front and rear two U-shaped frames 4 through the support plate 7. In the present utility model, by using the top of the oil cylinder 8 to contact and receive force with the U-shaped frame 4, the problem that the weld at the flange of the original extrusion oil cylinder cracks and leaks oil due to long-term use can be solved.

[0028] As Figure 4 shown, limiting blocks are respectively extended from both ends of the middle plate 11 to both sides, and the limiting blocks are slidably arranged between the two U-shaped frames 4 up and down, so as to facilitate the middle plate 11 to move up and down along the middle groove of the U-shaped frame 4.

[0029] A pair of L-shaped die pressing bars 13 that are arranged opposite to each other left and right are respectively arranged at the bottom of the die mounting plate 12 and the top of the bottom plate 3. The upper die 14 and the lower die 15 are respectively fixed on the die mounting plate 12 and the bottom plate 3 through the corresponding pair of die pressing bars 13.

[0030] A control mechanism 16 is arranged on the operating table board 2. The control mechanism 16 includes a PLC and a touch screen connected to the PLC. The PLC is connected to the oil cylinder 8 through a hydraulic mechanism. The hydraulic mechanism can be arranged inside the frame 1.

[0031] A limiting mounting plate 9 is fixedly arranged on one side at the bottom end of the gantry support. An upward limit switch and a downward limit switch 10 are mounted on the limiting mounting plate 9, and both the upward limit switch and the downward limit switch 10 are connected to the PLC of the control mechanism 16; an upper limit contact and a lower limit contact that can respectively trigger the upward limit switch and the downward limit switch 10 are mounted on the side surface of the middle plate 11.

[0032] A foot switch is provided at the bottom of the frame 1, and the foot switch is connected to the PLC of the control mechanism.

[0033] A steel bar bracket 17 is fixedly provided at the front end of the operation table board 2; the steel bar bracket 17 includes a liftable support rod, a U-shaped seat fixedly provided at the top of the support rod, and a V-shaped roller mounted on the U-shaped seat. The height of the V-shaped roller of the steel bar bracket 17 can be adjusted by the support rod. Place the steel bar to be processed on the V-shaped roller, and by manually rotating the steel bar, the poorly shaped part of the end of the steel bar can be subjected to multiple shaping extrusions.

[0034] Specific construction process: The worker holds the steel bar, places the steel bar on the steel bar bracket 17, sends the end of the steel bar into the lower die 15 through the V-shaped roller on the steel bar bracket 17, then steps on the foot switch with the foot, the piston rod of the oil cylinder 8 extends downward, driving the middle plate 11 to move downward, and further driving the upper die 14 to move downward to extrude the end of the steel bar on the lower die 15. When the lower limit contact touches the downward limit switch (10), it means that the extrusion of the steel bar this time is in place, and then the oil cylinder 8 drives the upper die 14 to move upward. When it moves to the upper limit contact to touch the upper limit switch, the oil cylinder 8 stops driving the upper die 14 to move upward; at this time, manually rotate the steel bar, continue to step on the foot switch with the foot, and extrude the end of the steel bar again; repeat the above operation 5-6 times, the shaping of the end of the steel bar is completed, and the entire extrusion process is completed.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of radial extrusion machine for steel bars, characterized in that, It includes a frame (1), an operating table board (2) fixedly arranged on the frame (1), and an extrusion mechanism fixedly arranged on the operating table board (2); the extrusion mechanism includes a bottom plate (3) fixedly arranged on the operating table board (2), a gantry bracket fixedly arranged on the bottom plate (3), and an oil cylinder (8) vertically and downwardly fixedly arranged on the inner top of the gantry bracket; the oil cylinder (8) is cylindrical, and the bottom of its piston rod is fixedly connected with a middle plate (11); a die mounting plate (12) is fixedly installed at the bottom of the middle plate (11), an upper die (14) is fixedly installed at the bottom of the die mounting plate (12), a lower die (15) is fixedly installed on the bottom plate (3), and the upper die (14) and the lower die (15) are arranged opposite to each other up and down.

2. The novel radial extruder for steel bars according to claim 1, wherein The gantry bracket includes two U-shaped frames (4) fixedly arranged on the operating table board (2) at intervals front and back, and the openings of the U-shaped frames (4) face downward; clamping plates are fixedly arranged at the left and right ends between the two U-shaped frames (4), a support plate (7) is fixedly arranged at the top between the two U-shaped frames (4), and the top of the oil cylinder (8) is fixedly connected with the support plate (7) through a plurality of bolts.

3. A novel radial extruder for steel bars according to claim 2, characterized in that, The clamping plates include an upper clamping plate (6) and a lower clamping plate (5) arranged at intervals up and down, and the front and back ends of the upper clamping plate (6) and the lower clamping plate (5) are respectively fixedly connected with the front and back two U-shaped frames (4) through a plurality of bolts.

4. A novel radial extrusion machine for steel bars according to claim 2, characterized in that, The support plate (7) is a T-shaped plate; the top end of the support plate (7) is placed on the two U-shaped frames (4), and the bottom end of the support plate (7) is clamped between the two U-shaped frames (4).

5. A novel radial extruder for steel bars according to claim 2, characterized in that, Limit blocks are respectively extended from both ends of the middle plate (11) to both sides, and the limit blocks are slidably arranged between the two U-shaped frames (4).

6. The novel radial extrusion machine for steel bars according to claim 1, characterized in that, A pair of L-shaped and oppositely arranged left and right die pressing strips (13) are respectively arranged at the bottom of the die mounting plate (12) and the top of the bottom plate (3), and the upper die (14) and the lower die (15) are respectively fixed on the die mounting plate (12) and the bottom plate (3) through the corresponding pair of die pressing strips (13).

7. A novel radial extruder for steel bars according to claim 1, characterized in that, A control mechanism (16) is arranged on the operating table board (2), the control mechanism (16) includes a PLC and a touch screen connected to the PLC, and the PLC is connected to the oil cylinder (8) through a hydraulic mechanism.

8. A novel radial extrusion machine for steel bars according to claim 7, characterized in that, A limit mounting plate (9) is fixedly arranged on one side of the bottom end of the gantry bracket, an upward limit switch and a downward limit switch (10) are installed on the limit mounting plate (9), and both the upward limit switch and the downward limit switch (10) are connected to the PLC of the control mechanism (16); an upper limit contact and a lower limit contact capable of respectively triggering the upward limit switch and the downward limit switch (10) are installed on the side surface of the middle plate (11).

9. A novel radial extrusion machine for steel bars according to claim 7, characterized in that, A foot switch is arranged at the bottom of the frame (1), and the foot switch is connected to the PLC of the control mechanism.

10. A novel radial extruder for steel bars according to claim 1, characterized in that, A steel bar bracket (17) is fixedly arranged at the front end of the operating table board (2); the steel bar bracket (17) includes a liftable support rod, a U-shaped seat fixedly arranged at the top of the support rod, and V-shaped rollers installed on the U-shaped seat.

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