CN115464077A

CN115464077A - Annular steel bar forming device

Info

Publication number: CN115464077A
Application number: CN202211192511.9A
Authority: CN
Inventors: 高鹏; 陈兴良; 李静林; 郝守书; 李方
Original assignee: Henan Guopeng Engineering Management Co ltd
Current assignee: Henan Guopeng Engineering Management Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2022-12-13

Abstract

The invention relates to an annular steel bar forming device, which effectively solves the problems of low automation degree, poor production precision and poor consistency of finished products of steel bar ring forming equipment; the technical scheme includes that the winding cutting device comprises a roller which can axially move and rotate around a shaft, the roller can spirally wind the steel bar on the outer wall of the roller, the spiral steel bar outside the roller is cut into spiral small sections by a cutting machine after winding, and the compression welding device is used for axially pressing the spiral small sections of the cut steel bar into a ring and welding the head end and the tail end of the spiral small sections into the ring; the invention can automatically finish winding and cutting the reinforcing steel bars in batches, each cut section has the same size, and the finished product is in a standard round shape after compression molding, has the same size and high precision and does not have deformation.

Description

Annular steel bar forming device

Technical Field

The invention relates to the field of bridge construction, in particular to an annular steel bar forming device.

Background

The steel reinforcement cage is an inner framework during pouring of a pier, and mainly comprises axial main reinforcements uniformly distributed on the circumference, annular reinforcing ribs uniformly distributed in the inner axial direction and outer spiral stirrups, wherein the inner annular reinforcing ribs are used as inner supports of the steel reinforcement cage and are main parts for ensuring the integral rigidity of the steel reinforcement cage; the processing of annular reinforcing bar has generally adopted the bending forming apparatus of the steel bar to assist the production, to the shaping of major diameter steel bar ring, mainly adopt the tube-shape or cage-shaped coiling apparatus at present, such as the invention patent of application number 201610002823.7, the utility model patent of application number 201420308021.5, the utility model patent of application number 201820562242.3, etc., this kind of apparatus has the most common application in the job site because of simple structure, however, because of simple structure, its degree of automation, production accuracy and finished product uniformity also have very big deficiency; for example, during winding, the diameter of the reinforcing ring of the outer ring is gradually increased along with the increase of the number of winding turns, and after the reinforcing ring is cut into sections along the bus bar, the diameter and the total length of each section are greatly different; in addition, when the reinforcing ring is welded, in order to ensure that the welding is firm, the head and the tail of the reinforcing ring need to be overlapped, the head and the tail of the cut reinforcing ring can be pulled to be overlapped when the welding is performed, and then the overlapped section is welded, because the lengths of each section of the cut reinforcing ring are different, and the length of the overlapped section has large human error, the size of the reinforcing ring formed by welding has large difference, in addition, when the head and the tail of the reinforcing ring are jointed, the reinforcing ring can not be ensured to be in a standard round shape, in most cases, the reinforcing ring is in an oval shape, a pointed round shape and the like, and if the shape is seriously deformed, the reinforcing ring also needs to be shaped when the reinforcing ring is welded with a main reinforcement of a reinforcement cage.

Disclosure of Invention

The invention provides an annular steel bar forming device, aiming at the problems of low automation degree, poor production precision and poor consistency of finished products of the existing steel bar ring forming equipment.

The technical scheme includes that the winding and cutting device comprises a winding and cutting device and a compression welding device, the winding and cutting device comprises a pit excavated on the ground and a cylindrical roller, the axis of the roller is vertical, a shaft hole is formed in the axis of the roller, the roller can be accommodated in the pit, a vertical first upright post is fixed at the bottom of the pit, the first upright post penetrates into the shaft hole of the roller, and a reinforcing steel bar head fixing device is arranged at the bottom of the outer wall of the roller; a horizontal plate is arranged below the roller, the lower end of the roller is supported on the horizontal plate, two vertical threaded rods are fixed in the pit and are arranged in bilateral symmetry, a threaded sleeve is arranged on each threaded rod, and the two threaded sleeves are both mounted on the horizontal plate through bearings; a through hole is formed in the center of the horizontal plate, a boss is arranged at the lower end of the roller and provided with an axis, the boss extends to the lower side of the horizontal plate through the through hole, a first bevel gear which is coaxial with the roller is arranged on the boss, the first bevel gear is meshed with a second bevel gear, and the second bevel gear is connected with a driving motor; the winding and cutting device also comprises a cutting machine, the cutting machine is positioned on one side of the roller and can move back and forth to cut the steel bars wound on the roller;

the compression welding device comprises a vertical cylinder, and the inner diameter of the cylinder is equal to the outer diameter of the finished annular reinforcing rib; the upper end of the cylinder is provided with an upper pressing plate, the lower end of the cylinder is provided with a lower pressing plate, and the diameters of the upper pressing plate and the lower pressing plate are both larger than the inner diameter of the annular reinforcing rib; the side wall of the cylinder is provided with an axial notch, and the head end and the tail end of the compressed steel bar can be welded through the notch.

A fixing frame is arranged outside the pit, a second upright post is fixed on the fixing frame, the upper end of the second upright post is fixed on the fixing frame, the lower end of the second upright post is suspended, and the second upright post and the first upright post are coaxial and have the same diameter.

Each threaded sleeve's lower extreme all is fixed with a first synchronous pulley, installs a second synchronous pulley on the horizontal plate lower plate face, is connected with a hold-in range between every first synchronous pulley and the second synchronous pulley.

The reinforcing steel bar head fixing device comprises a sleeve fixed on the outer wall of the roller, the inner diameter of the sleeve is larger than the diameter of the reinforcing steel bar, and a compression bolt is installed on the side wall of the sleeve.

The upper end opening of the cylinder is provided with a bell mouth.

The compression welding device also comprises a plurality of laminated plates with the same diameter as the pressing plate.

A plurality of radial pneumatic cylinders are uniformly distributed on the outer circumference of a pithead of the pit, and pneumatic rods of the pneumatic cylinders can extend inwards.

And a plurality of balls are arranged between the horizontal plate and the lower end surface of the roller.

The invention can automatically finish winding and cutting the reinforcing steel bars in batches, each cut section has the same size, and the finished product is in a standard round shape after compression molding, has the same size and high precision and does not have deformation.

Drawings

Fig. 1 is a front sectional view of a winding and cutting device.

Fig. 2 is a front view of the winding and cutting device at the start of winding.

Fig. 3 is a front view of the winding and cutting device when the winding of the reinforcing bars is completed.

Fig. 4 is a schematic diagram of a cutting route, wherein a dotted line is a traveling path of the cutting machine relative to the roller.

Fig. 5 is a front view of the winding and cutting device after the roller descends after the cutting is finished.

FIG. 6 is a bottom view of the horizontal plate position.

Fig. 7 is an enlarged view of the position a in fig. 1.

Fig. 8 is an enlarged view of the position B in fig. 2.

FIG. 9 is a top view of the drum relative to the cutter.

Fig. 10 is an enlarged view of the position C in fig. 2.

Fig. 11 is a front view of the compression welding apparatus.

Fig. 12 is a front sectional view of the compression welding apparatus.

Fig. 13 is a front cross-sectional view of the compression welding apparatus after the rebar length is compressed into a loop.

Fig. 14 is a top cross-sectional view of the cylinder.

Fig. 15 is a front sectional view of the compression welding apparatus in multi-layer compression.

Detailed Description

With the combination of the attached drawings, the steel bar cutting device comprises a winding cutting device and a compression welding device, wherein the winding cutting device is used for winding a steel bar into a spiral shape and cutting the steel bar into spiral small sections with equal length, and the compression welding device is used for axially pressing the cut spiral small sections into a ring and welding the head end and the tail end of the ring into a ring;

the winding and cutting device comprises a pit 1 excavated on the ground and a cylindrical roller 2, the axis of the roller 2 is vertical, the axis of the roller 2 is provided with a shaft hole 3, the roller 2 rotates to wind reinforcing steel bars on the outer wall of the roller 2, the roller 2 moves up and down while winding, so that the reinforcing steel bars are spirally wound on the outer wall of the roller 2, the pit 1 provides a space for the up and down movement of the roller 2, the shape of the pit 1 is similar to that of the roller 2, the inner diameter of the pit 1 is larger than the outer diameter of the roller 2, the roller 2 can be accommodated in the pit 1, a vertical first upright post 4 is fixed at the bottom of the pit 1, the first upright post 4 penetrates into the shaft hole 3 of the roller 2, the shaft hole 3 is in clearance fit with the first upright post 4, so that the roller 2 can rotate around the first upright post 4 and can also move axially along the first upright post 4, and a reinforcing steel bar head fixing device 5 is arranged at the bottom of the outer wall of the roller 2 and used for fixing the end heads of the reinforcing steel bars to be wound; a horizontal plate 6 is arranged below the roller 2, the lower end of the roller 2 is borne on the horizontal plate 6, the roller 2 is driven to move up and down by the up-and-down movement of the horizontal plate 6, two vertical threaded rods 7 are fixed in the pit 1, the two threaded rods 7 are arranged in bilateral symmetry, a threaded sleeve 8 is arranged on each threaded rod 7, the two threaded sleeves 8 are both arranged on the horizontal plate 6 through bearings, the bearings adopt tapered roller bearings capable of bearing axial force, the two threaded sleeves 8 synchronously rotate and can move up and down along the threaded rods 7, so that the horizontal plate 6 is driven to move up and down, and the roller 2 is driven to move up and down; a through hole 9 is formed in the center of the horizontal plate 6, a boss 10 is arranged at the lower end of the roller 2 and provided with an axis, the boss 10 extends to the lower portion of the horizontal plate 6 through the through hole 9, a first bevel gear 11 coaxial with the roller 2 is mounted on the boss 10, the first bevel gear 11 is meshed with a second bevel gear 12, the second bevel gear 12 is connected with a driving motor, the driving motor is fixed on the horizontal plate 6, and the driving motor drives the roller 2 to rotate through a bevel gear set; the roller 2 rotates around the first upright post 4 and moves along the axis of the first upright post 4 to realize the spiral winding of the steel bars on the outer wall of the roller 2;

the winding and cutting device further comprises a cutting machine 13, the cutting machine 13 is positioned on one side of the roller 2 and can move back and forth to cut the reinforcing steel bars wound on the roller 2, the cutting machine 13 is close to the roller 2 to cut the reinforcing steel bars wound in the roller 2, and the spiral reinforcing steel bars are cut into multiple sections;

the compression welding device comprises a vertical cylinder 14, the inner diameter of the cylinder 14 is equal to the outer diameter of the finished annular reinforcing rib and is also equal to the outer diameter of the spiral reinforcing steel bar wound and formed outside the roller 2, namely the outer diameters of the reinforcing steel bar sections before and after compression are unchanged; an upper pressing plate 15 is arranged at the upper end of the cylinder 14, a lower pressing plate 16 is arranged at the lower end of the cylinder 14, the diameters of the upper pressing plate 16 and the lower pressing plate 16 are both larger than the inner diameter of the annular reinforcing rib, the pressing plates are driven by oil cylinders, the diameter of the upper pressing plate 16 and the diameter of the lower pressing plate 16 are preferably 3-5 mm smaller than the inner diameter of the cylinder 14, so that friction between the pressing plates and the inner wall of the cylinder 14 can be avoided, reinforcing steel bars can be compressed and cannot penetrate through the reinforcing steel bar ring, the spiral lower-end reinforcing steel bars are axially compressed into a ring shape by downward pressing of the upper pressing plate 15, and the lower pressing plate 16 pushes up the finished reinforcing steel bars out after welding; an axial notch 17 is formed in the side wall of the cylinder 14, namely the section of the cylinder 14 is an incomplete circle formed by a gap, and the head end and the tail end of the compressed steel bar can be welded through the notch 17.

A fixing frame 18 is arranged outside the pit 1, a second upright post 19 is fixed on the fixing frame 18, the upper end of the second upright post 19 is fixed on the fixing frame 18, the lower end of the second upright post is suspended, the second upright post 19 is coaxial with the first upright post 4 and has the same diameter, after the roller 2 moves upwards for a certain distance, the second upright post 19 can penetrate into the shaft hole 3 and keep the stability of the roller 2 together with the first upright post 4, and the roller 2 is prevented from shaking caused by the fact that the matching length of the first upright post 4 and the roller 2 is shortened due to the fact that the roller 2 moves upwards; the upper end of the shaft hole 3 is provided with a guide groove, so that the second upright post 19 can be conveniently penetrated.

Every the lower extreme of threaded sleeve 8 all be fixed with a first synchronous pulley 20, install a second synchronous pulley 21 under the horizontal plate 6 on the face, be connected with a hold-in range 22 between every first synchronous pulley 20 and the second synchronous pulley 21, second synchronous pulley 21 is connected with driving motor, second synchronous pulley 21 drives two first synchronous pulleys 20 syntropy and rotates through hold-in range 22 to drive two threaded sleeve 8 syntropy and rotate at the same speed, and then drive horizontal plate 6 and reciprocate.

The reinforcing bar head fixing device 5 comprises a sleeve 23 fixed on the outer wall of the roller 2, the inner diameter of the sleeve 23 is larger than the diameter of the reinforcing bar, a compression bolt 24 is arranged on the side wall of the sleeve 23, and the reinforcing bar head is fixed by screwing the compression bolt 24 after being inserted into the sleeve 23.

The upper end opening of the cylinder 14 is provided with a bell mouth 25, so that a steel bar section to be compressed can be conveniently placed in the cylinder 14.

The compression welding device further comprises a plurality of laminates 26 with the same diameter as the pressing plates, a plurality of steel bar sections can be compressed at one time through the separation of the laminates 26, specifically, one steel bar section is placed into one laminate 26, one steel bar section is placed into the other laminate 26, the laminates are sequentially stacked, the upper pressing plate 15 presses downwards to be compressed after stacking is completed, and the steel bar rings are welded one by one through the notches 17 after compression is completed.

Pit 1's outer circumference of pithead equipartition have a plurality of radial pneumatic cylinders 27, pneumatic cylinder 27's pneumatic rod can inwards stretch out, before the cutting of the outer reinforcing bar section of roller 2, the pneumatic rod stretches out, the reinforcing bar section after the cutting can be held to the pneumatic rod, roller 2 moves down and can make the reinforcing bar section pile up in roller 2 upper end, roller 2 breaks away from the back with second stand 19, can follow roller 2 with the reinforcing bar section and take off.

A plurality of balls 28 are arranged between the horizontal plate 6 and the lower end surface of the roller 2, and the roller 2 can flexibly rotate while bearing the roller 2.

In use of the invention, the drum 2 is initially located outside the pit 1, the end of the bar to be wound is inserted into the sleeve 23, and the head of the bar is secured by tightening the hold-down bolt 24, as shown in fig. 2; after the fixing, the driving motors of the second bevel gear 12 and the second synchronous pulley 21 are started simultaneously, the second bevel gear 12 and the first bevel gear 11 are meshed to drive the roller 2 to rotate, the second synchronous pulley 21 drives the two first synchronous pulleys 20 to rotate simultaneously through the synchronous belts 22, the two synchronous belts 22 drive the two threaded sleeves 8 to rotate, the two threaded sleeves 8 move downwards along the threaded rods 7, the roller 2 synchronously moves downwards, and under the combined action of downwards moving and rotating of the roller 2, the reinforcing steel bars are spirally wound on the surface of the roller 2 at a fixed pitch, as shown in fig. 3.

After the winding is finished, the driving motor of the second bevel gear 12 and the second synchronous pulley 21 is closed, then the cutting machine 13 is made to extend forwards to be close to the roller 2, the cutting machine 13 is driven by the oil cylinder to move, then the driving motor of the second synchronous pulley 21 is started reversely, the horizontal plate 6 drives the roller 2 to move upwards, meanwhile, the driving motor of the second bevel gear 12 is reversed, the roller 2 rotates at a slow speed while moving upwards, so that the cutting track of the cutting machine 13 relative to the surface of the roller 2 is a spiral line with a large pitch, and the spiral direction is the same as the winding spiral direction of the reinforcing steel bars, as shown in fig. 4, the circumferential angle of each section of reinforcing steel bars after cutting is larger than 360 degrees, namely, under the condition that the outer diameter is unchanged, the head end and the tail end of each section of reinforcing steel bar can be overlapped by one section of allowance for welding after being compressed into a ring, the lengths of the reinforcing steel bars after forming and cutting are consistent, and the sizes are accurate.

The current sensor can be arranged on the cutting machine 13 to detect the current of the motor of the cutting machine 13, after the cutting machine 13 contacts the steel bar, the load of the cutting machine 13 can be increased remarkably, the corresponding current can be increased remarkably, at the moment, the current sensor monitors that the driving motor of the second bevel gear 12 is braked after the current is increased remarkably, namely, the rotation of the roller 2 is suspended when the cutting machine 13 cuts the steel bar entity, the blade of the cutting machine 13 is prevented from being broken off, and after the steel bar at the position is cut off, the current is reduced, and the rotation of the roller 2 is recovered.

Before cutting, the pneumatic rod of the pneumatic cylinder 27 of the pithead of the pit 1 extends to support the steel bar, so that the cut steel bar section cannot fall off, after cutting is completed, the driving motor of the second synchronous belt pulley 21 is started to enable the roller 2 to move downwards, the steel bar section is accumulated on the upper portion of the roller 2, and when the roller 2 moves downwards to be separated from the second upright post 19, the steel bar section is taken out from the upper end of the roller 2, as shown in fig. 5.

The steel bar section after being taken out is placed into the cylinder 14 and can be singly placed or stacked, then the upper pressing plate 15 is pressed downwards to compress the steel bar section into a ring, the steel bar section is compressed into a standard circle under the limiting action of the cylinder 14 and the action that the steel bar section expands outwards due to elasticity and compression, the head and the tail of the steel bar section after ring formation are overlapped for one section due to the fact that the length of the steel bar section is larger than the circumference after ring formation, then the head and the tail overlapped sections of each steel bar ring are welded through the notch 17, the steel bar rings are formed in a closed mode, then the upper pressing plate 16 and the lower pressing plate 16 move upwards at the same time to push the steel bar rings out of the upper end of the cylinder 14, and the lower pressing plate 16 can also move downwards, and the steel bar rings fall off the lower end of the cylinder 14; winding cutting device can carry out next winding cutting work of a set of automatically when compression welding, so seamless connection can improve work efficiency.

According to the invention, the steel bar is wound into a spiral shape with a larger pitch by the axial movement and the circumferential rotation of the roller 2, and then the spiral steel bar is cut along the spiral line path by the matching of the cutting machine 13 and the movement of the roller 2, so that the circumferential angle of each short spiral steel bar section after cutting is more than 360 degrees, thereby providing allowance for the first jointing of the steel bar, each section of steel bar is completely consistent, and the good winding precision and cutting precision are achieved, and the whole winding and cutting process is automatically completed, so that the automation degree is high, the labor is effectively reduced, and the production efficiency is improved; when the reinforcing steel bar section is compressed, the diameter is increased similar to that when a spring is compressed, the spiral reinforcing steel bar section has a trend of expanding outwards in a transverse direction when the spiral reinforcing steel bar section is compressed, and the bent reinforcing steel bar has resilience, so that the reinforcing steel bar can be tightly attached to the inner wall of the cylinder 14 under the limiting action of the cylinder 14, the reinforcing steel bar section is compressed into a standard circle, the diameter and the end overlapping amount of each single finished product are completely the same, the finished product of the annular reinforcing steel bar has good precision and consistency, and convenience is provided for the subsequent welding of the steel fine cage; moreover, the invention has simple integral structure and is suitable for being used in construction sites.

Claims

1. The annular steel bar forming device is characterized by comprising a winding cutting device and a compression welding device, wherein the winding cutting device comprises a pit (1) excavated on the ground and a cylindrical roller (2), the axis of the roller (2) is vertical, a shaft hole (3) is formed in the axis of the roller (2), the roller (2) can be accommodated in the pit (1), a vertical first stand column (4) is fixed at the bottom of the pit (1), the first stand column (4) penetrates into the shaft hole (3) of the roller (2), and a steel bar head fixing device (5) is arranged at the bottom of the outer wall of the roller (2); a horizontal plate (6) is arranged below the roller (2), the lower end of the roller (2) is supported on the horizontal plate (6), two vertical threaded rods (7) are fixed in the pit (1), the two threaded rods (7) are arranged in bilateral symmetry, each threaded rod (7) is provided with a threaded sleeve (8), and the two threaded sleeves (8) are both mounted on the horizontal plate (6) through bearings; a through hole (9) is formed in the center of the horizontal plate (6), a boss (10) is arranged at the lower end of the roller (2) and provided with an axis, the boss (10) extends to the lower part of the horizontal plate (6) through the through hole (9), a first bevel gear (11) coaxial with the roller (2) is arranged on the boss (10), a second bevel gear (12) is meshed with the first bevel gear (111), and the second bevel gear (12) is connected with a driving motor; the winding and cutting device further comprises a cutting machine (13), wherein the cutting machine (13) is positioned on one side of the roller (2) and can move back and forth to cut the steel bars wound on the roller (2);

the compression welding device comprises a vertical cylinder (14), and the inner diameter of the cylinder (14) is equal to the outer diameter of the finished annular reinforcing rib; an upper pressure plate (15) is arranged at the upper end of the cylinder (14), a lower pressure plate (16) is arranged at the lower end of the cylinder, and the diameters of the upper pressure plate and the lower pressure plate (16) are all larger than the inner diameter of the annular reinforcing rib; an axial notch (17) is formed in the side wall of the cylinder (14), and the head end and the tail end of the compressed steel bar can be welded through the notch (17).

2. An annular reinforcing steel bar forming device according to claim 1, wherein a fixing frame (18) is arranged outside the pit (1), a second upright post (19) is fixed on the fixing frame (18), the upper end of the second upright post (19) is fixed on the fixing frame (18), the lower end of the second upright post (19) is suspended, and the second upright post (19) and the first upright post (4) are coaxial and have the same diameter.

3. An annular reinforcing steel bar forming device according to claim 1, wherein a first synchronous belt (22) wheel (20) is fixed at the lower end of each threaded sleeve (8), a second synchronous belt (22) wheel (21) is installed on the lower plate surface of the horizontal plate (6), and a synchronous belt (22) is connected between each first synchronous belt (22) wheel (20) and each second synchronous belt (22) wheel (21).

4. A device for forming a ring-shaped steel bar according to claim 1, wherein the steel bar head fixing means (5) comprises a casing (23) fixed on the outer wall of the drum (2), the inner diameter of the casing (23) is larger than the diameter of the steel bar, and the side wall of the casing (23) is provided with a pressing bolt (24).

5. An annular reinforcing bar forming device according to claim 1, wherein the upper end opening of the cylinder (14) is provided with a bell mouth (25).

6. An annular reinforcing bar forming apparatus according to claim 1, wherein said compression welding means further comprises a plurality of layers (26) having the same diameter as the pressure plates.

7. An annular reinforcing steel bar forming device according to claim 1, wherein a plurality of radial pneumatic cylinders (27) are uniformly distributed on the outer circumference of the pithead of the pit (1), and pneumatic rods of the pneumatic cylinders (27) can extend inwards.

8. An annular reinforcing bar forming device according to claim 1, wherein a plurality of balls (28) are arranged between the horizontal plate (6) and the lower end surface of the roller (2).