JP7148711B2 - rebar hoop bending machine - Google Patents

Description

TECHNICAL FIELD The present application relates to the technical field of reinforcing bar processing equipment, for example, to a reinforcing bar hoop bending machine.

Rebar hoop bending machine is an automatic processing device that bends the raw material wire rod wire reinforcing bar into different shapes of hoop bars, and is widely applied in the fields of urban construction, railroad and traffic construction. As shown in FIG. 1, a rebar hoop bending machine in the related art includes a horizontal straightening device 100, a pulling mechanism 200, a vertical straightening mechanism 300, a cutting mechanism 400 and a bending mechanism 500, which are sequentially provided from left to right, here , the traction mechanism 200 includes two sets of power rollers 201 and two sets of pinch rollers 202. Of the two sets of pinch rollers 202, the pinch roller 202 closer to the cutting mechanism 400 has a function of measuring the length. It also serves as a length measuring roller 203 .

During operation, as shown in FIG. 2, two reinforcing bars 10 are normally inserted into grooves between two sets of power rollers 201 and pinch rollers 202, and the pinch rollers 202 push the reinforcing bars 10 against the power rollers 201. The material is fed by the frictional force between the reinforcing bar 10 and the power roller 201. The deviation in the diameter of the two rebars 10 themselves (as shown in FIG. 3, when the pinch roller 202 is pushed down, the right rebar 10 is pinched, but the left rebar 10 is not pinched) or the ribbed rebar 10 Due to its own ribs, at least one of the two rebars 10 slips and scratches the rebar 10 and the power roller 201 due to not being clamped in the work, and the pinch roller 202 and the power roller 201. It can cause damage too quickly. At least one of the two reinforcing bars 10 slips, or two reinforcing bars 10 have different degrees of slipping, so that the two reinforcing bars 10 are not synchronized when moving forward, resulting in dimensional deviation. It becomes large, and the error of the length of the rebar 10 processed becomes large. In addition, in the processing process of the reinforcing bar hoop bending machine, the reinforcing bar 10 is likely to be twisted, and the twisting direction is as shown by the arrowed curve in FIG. low efficiency. Increasing the clamping force of the pinch rollers 202 can reduce the slipping phenomenon, but the reinforcing bars 10 are pressed and damaged or crushed. At the same time, excessive clamping force will lead to premature damage of structures such as pinch rollers 202, power rollers 201, and support bearings.

The present application provides a rebar hoop bending machine that can prevent rebar slippage.

One embodiment is a reinforcing bar hoop bending machine comprising a traction roller set, a traction length measurement roller set, and a traction straightening mechanism provided between the traction roller set and the traction length measurement roller set, wherein the traction straightening The mechanism includes at least two driving rollers and at least one driven roller, the driving rollers and the driven rollers are alternately provided, and a gap through which a reinforcing bar is inserted is provided between the adjacent driving rollers and the driven rollers. , providing rebar hoop bending machine.

It is a structural schematic diagram of a reinforcing bar hoop bending machine in the related art. FIG. 2 is a cross-sectional view taken along line CC in FIG. 1; FIG. 3 is an enlarged view of the partial structure at a point D in FIG. 2; It is a schematic diagram of the twist direction of the reinforcing bar in the reinforcing bar hoop bending machine in related technology. 1 is a structural schematic diagram of a reinforcing bar hoop bending machine according to an embodiment of the present application; FIG. 1 is a plan view of a reinforcing bar hoop bending machine according to an embodiment of the present application; FIG. FIG. 6 is a cross-sectional view along the line AA in FIG. 5; FIG. 6 is a cross-sectional view along the line BB in FIG. 5; FIG. 4 is a schematic diagram of the shape of a reinforcing bar moving forward in a reinforcing bar hoop bending machine according to an embodiment of the present application;

This embodiment discloses a rebar hoop bending machine. As shown in FIGS. 5 to 9, the reinforcing bar hoop bending machine includes a traction roller set 3 and a traction length measuring roller set 4, and between the traction roller set 3 and the traction length measuring roller set 4, a traction correction mechanism is provided, the traction straightening mechanism comprises at least two driving rollers 5 and at least one driven roller 6, the driving rollers 5 and the driven rollers 6 are respectively positioned on both sides of the reinforcing bar 10 and alternately provided, and the reinforcing bar 10 is It is inserted between the driving roller 5 and the driven roller 6 adjacent to each other. The traction roller set 3 , the traction length measuring roller set 4 and the traction correction mechanism are all attached to the housing 8 , and the housing 8 is mounted to the frame 40 . In one embodiment, the drive roller 5 of the traction straightening mechanism is attached to the housing 8 by a drive shaft 51, the drive shaft 51 is connected to the drive and the driven roller 6 is mounted to the housing 8 by a driven shaft.

The driving rollers 5 and the driven rollers 6 are alternately provided to straighten the reinforcing bars 10 and at the same time to stably pull the reinforcing bars 10 to prevent slipping of the reinforcing bars 10 and improve the accuracy of later counting and weighing. improve. The pulling roller set 3 comprises at least one pair of a driving roller 5 and a driven roller 6, the driving roller 5 and the driven roller 6 forming an opposing pressing roller structure to facilitate threading and pulling of the rebar 10. The rebar hoop bending machine has a simple and reasonable structure, low cost, easy installation, stable operation, low noise and energy saving.

The traction correction mechanism includes a first set of traction correction mechanisms 1 and a second set of traction correction mechanisms 2, and the motion path of the reinforcing bars 10 in the first set of traction correction mechanisms 1 and the reinforcing bars in the second set of traction correction mechanisms 2. 10 motion paths are provided to form a non-zero included angle. The direction indicated by the arrow in FIG. 9 is the direction in which the reinforcing bar 10 moves uphill during the process of pulling and straightening. That is, a line connecting the centers of the drive rollers 5 of the first set of traction correction mechanisms 1 and a line connecting the centers of the drive rollers 5 of the second set of traction correction mechanisms 2 are arranged to form a preset angle, The reinforcing bar 10 can be straightened and pulled stably, the reinforcing bar 10 can be prevented from being twisted when being pulled, the surface quality of the reinforcing bar 10 can be improved, and the work efficiency can be improved. Eliminate the horizontal straightening mechanism of the hoop bending machine in the related art.

The driving device is connected to the driving shaft 51 of one of the driving rollers 5 in the traction straightening mechanism. As shown in FIG. A transition gear 53 is provided that meshes with the transmission gear 52 , the transmission gear 52 transmitting power of the drive to the adjacent drive roller 5 by means of the transition gear 53 , the transmission gear 52 being provided within the housing 8 . In one embodiment, the structure of transmitting power by means of gear pairs can be replaced with a structure such as a transmission chain or a synchronous transmission belt, and the effect of transmitting the driving force is the same.

As shown in FIGS. 5 and 6, the driving device comprises a motor 91, a first synchronous pulley 92, a synchronous belt 93 and a second synchronous pulley 94, the synchronous belt 93 being connected to the first synchronous pulley 92 and the second synchronous pulley. The second synchronous pulley 94 is attached to the output shaft of the motor 91, the first synchronous pulley 92 is provided with a traction shaft 95, and the first synchronous pulley 92 is provided with a traction shaft 95. is connected to the drive shaft 51 of any one drive roller 5 in the traction straightening mechanism. The first synchronous pulley 92 and the second synchronous pulley 94 are respectively provided with positioning grooves to prevent the positional deviation of the synchronous belt 93, thereby ensuring the stability of power transmission.

The diameter of the first synchronous pulley 92 is larger than the diameter of the second synchronous pulley 94 and plays a role of deceleration. The torque of the device can be effectively increased.

In addition to the above structure, in order to improve the straightening quality of the rebar 10, the rebar hoop bending machine further comprises at least one set of straightening and fine adjustment roller sets 7. As shown in FIG. 5 , the straightening/precise adjustment roller set 7 is provided between the traction straightening mechanism 2 of the second set and the traction length measuring roller set 4 and is attached to the housing 8 . The vertical position of the straightening and fine adjustment roller set 7 is adjustable to accommodate the use requirements of different diameter rebars 10 .

The straightening/precision adjustment roller set 7 includes at least two precision adjustment drive rollers 71, at least one precision adjustment driven roller 72 and a pressing slider 73. Located on both sides, the fine adjustment drive rollers 71 and the fine adjustment driven rollers 72 are alternately arranged. As shown in FIG. 8, the fine adjustment drive roller 71 is attached to the housing 8 by a fine adjustment drive roller shaft 711 . As shown in FIG. 5, the center of the fine adjustment driven rollers 72 and the center of the driven rollers 6 in the second set of traction straightening mechanisms 2 are located in the same horizontal plane, making the rebar 10 flatter and straighter. The fine adjustment driven roller 72 is mounted on a clamping slider 73 which is mounted on the housing 8 and is vertically movable along the housing 8 .

When actually installed, the straightening/precise adjustment roller set 7 and the second set of traction straightening mechanism 2 may be provided according to the meshing intervals of the same adjacent transmission gears. and the traction correction mechanism 2 of the second set can share one driving roller 5 at the boundary position. In one embodiment, the straightening and fine adjustment roller set 7 may be mounted independently and no commonality with the traction straightening mechanism 2 of the second set occurs.

As shown in FIG. 8, the precision adjustment driving roller 71 is provided with two grooves 74 through which the reinforcing bars 10 are inserted, and the precision adjustment driven roller 72 adopts a separate structure and is provided close to the side surface of the roller. Each sub-driven roller 721 is provided with a roller shaft 75, the number of pressing sliders 73 is two, and each sub-driven roller 721 is associated with the roller shaft 75 respectively. The two pressing sliders 73 are independent of each other, and both are attached to the housing 8 and can move along the housing 8 in the vertical direction. In the process of processing double-line reinforcing bars, when one or two reinforcing bars 10 sag, if the sub-driven roller 721 on the corresponding side is pushed down appropriately, the reinforcing bars 10 can be restored to a straight line, and one or two When the two reinforcing bars 10 warp upward, the sub-driven roller 721 on the corresponding side is lifted to restore the straightening of the reinforcing bars 10 .

In order to achieve the effect of energy saving and reduce the volume of the device, the first set of traction straightening mechanism 1, the second set of traction straightening mechanism 2, the pulling roller set 3, the pulling length measuring roller set 4, straightening and precision All adjustment roller sets 7 are driven by the same drive.

The reinforcing bar hoop bending machine according to this embodiment further comprises a material guiding mechanism 50, a cutting mechanism 20 and a bending mechanism 30, wherein the material guiding mechanism 50 is provided on one side of the traction roller set 3 and introduces the reinforcing bar 10 The cutting mechanism 20 is provided between the traction length measuring roller set 4 and the bending mechanism 30 . The operation process of the rebar hoop bending machine is as follows. The reinforcing bar 10 reaches the pulling roller set 3 via the material guide mechanism 50, the driven roller 6 and the driving roller 5 of the pulling roller set 3 are engaged to squeeze the reinforcing bar 10, and one of the pulling straightening mechanisms The drive rollers 5 are rotated by the drive of the driving device, thereby pulling the rebars 10 into the first set of traction straightening mechanisms 1 and the second set of traction straightening mechanisms 2, the rebars 10 being alternately arranged by the drive. After completing the automatic threading between the roller 5 and the driven roller 6, setting the straightening length required for the reinforcing bar 10, starting the motor 91, the synchronous belt 93 transmits the power, and the pulling main shaft 95 is rotated. Rotatingly entrained, the traction main shaft 95 rotatably entrains the drive shaft 51 through the meshing of the transmission gear 52 and the transition gear 53, so as to realize the synchronous rotation of all the drive rollers 5, and straighten the rebar. 10 sequentially enters a cutting mechanism 20 and a bending mechanism 30 .

This application claims the benefit of priority to a Chinese patent application with application number 201811115969.8, filed on September 25, 2018, and the entire contents of the application are incorporated herein by reference. to refer to.

Claims (5)

A reinforcing bar hoop bending comprising a traction roller set (3), a traction length measurement roller set (4), and a traction correction mechanism provided between the traction roller set (3) and the traction length measurement roller set (4) , wherein said traction straightening mechanism comprises at least two driving rollers (5) and at least one driven roller (6), said driving rollers (5) and said driven rollers (6) are alternately provided and adjacent to each other; A gap is provided between the drive roller (5) and the driven roller (6), through which a reinforcing bar (10) is inserted,
The traction correction mechanism includes a first set of traction correction mechanisms (1) and a second set of traction correction mechanisms provided sequentially between the traction roller set (3) and the traction length measuring roller set (4). (2) between the motion path of the reinforcing bars (10) in the first set of traction correction mechanisms (1) and the motion path of the reinforcing bars (10) in the second set of traction correction mechanisms (2); is provided to form a non-zero included angle ,
further comprising at least one set of straightening and fine adjustment roller sets (7) and a housing (8);
The straightening/precise adjustment roller set (7) is provided between the traction straightening mechanism (2) of the second set and the traction length measuring roller set (4) so that the position thereof can be adjusted in the vertical direction. comprising at least two fine-tuning drive rollers (71), at least one fine-tuning driven roller (72) and a clamping slider (73);
The fine adjustment driving roller (71) and the fine adjustment driven roller (72) are arranged alternately,
Said fine adjustment driven roller (72) is mounted on said clamping slider (73), said clamping slider (73) is mounted on said housing (8) and along said housing (8) configured for vertical motion with the
Each of the precision adjustment drive rollers (71) is provided with two grooves (74) through which the reinforcing bars (10) are inserted,
The precision adjustment driven roller (72) comprises two sub-driven rollers (721) respectively corresponding to the two grooves (74),
Each of the sub-driven rollers (721) is provided with a roller shaft (75),
The number of said pressing sliders (73) is two,
The sub-driven rollers (721) are each attached to the pressing slider (73) by the roller shaft (75),
the two squeeze sliders (73) are mounted independently of each other on the housing (8) and configured to move vertically along the housing (8);
Rebar hoop bending machine. The center of the fine adjustment driven roller (72) and the center of the driven roller (6) in the second set of traction straightening mechanism (2) are located on the same horizontal plane,
The reinforcing bar hoop bending machine according to claim 1 . Further comprising a driving device, a transmission gear (52) and a transition gear (53), said driving roller (5) is provided with a driving shaft (51), said driving device is any one of said traction correction mechanism. Connected to the drive shaft (51) of the drive roller (5), the transmission gear (52) is provided on the drive shaft (51), the transition gear (53) is adjacent to the power of the drive device configured to mesh and transmit with the transmission gear (52) for transmission to the drive roller (5);
The reinforcing bar hoop bending machine according to claim 1 or 2 . Said driving device comprises a motor (91), a first synchronous pulley (92), a synchronous belt (93) and a second synchronous pulley (94), said synchronous belt (93) being connected to said first synchronous pulley ( 92) and the second synchronous pulley (94), the second synchronous pulley (94) is provided to be attached to the output shaft of the motor (91), and the first synchronous pulley ( 92) is provided with a traction shaft (95), and the first synchronous pulley (92) is driven by the traction shaft (95) to drive the drive shaft (51) of any one of the drive rollers (5) in the traction correction mechanism. ),
The reinforcing bar hoop bending machine according to claim 3 . the diameter of said first synchronizing pulley (92) is greater than the diameter of said second synchronizing pulley (94);
The reinforcing bar hoop bending machine according to claim 4 .

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