Steel bar bending machine

Abstract

The present invention provides a steel bar hoop bending machine, including a main machine, a supporting feed trough and a vertical support plate are transversely arranged on the main machine side, wherein the vertical support plate is above the supporting feed trough, and a head assembly extending transversely from the main machine side corresponds to the position of the supporting feed trough, and the vertical support plate arranged longitudinally is inclined toward the main machine and forms an acute angle with the horizontal plane of the main machine. This simple steel bar hoop bending machine changes the original horizontally arranged workbench structure, uses the supporting feed trough to support the steel bars to be processed, changes the bending direction of the steel bars to be bent longitudinally, and simultaneously uses the vertical support plate to support the steel bars in the bending process. Not only does it not require the operator to support the weight of the steel bars by hand during the entire steel bar hoop processing process, which greatly reduces the burden on the operator, but also because the bending direction is longitudinal and inclined toward the main machine, it also avoids the possibility of hitting the operator during the bending process, greatly improving the safety of the hoop bending machine.

Description

Technical Field

[0001] The invention relates to the technical field of steel bar hoop bending machine manufacturing, in particular to a steel bar hoop bending machine. Background Art

[0002] Steel bar hoops are commonly used in construction. They are made by bending steel bars. Usually, the forming equipment of steel bar hoops can be roughly divided into two categories. One is a large hydraulic hoop bending machine used for centralized mass production, and the other is a simple hoop bending machine placed on the construction site for small-scale processing. Due to the complex structure, large equipment size and high cost of large hydraulic hoop bending machines, they are not suitable for use on construction sites. Therefore, most of the simple hoop bending machines used on construction sites are simple in structure, small in size and relatively cheap.

[0003] Existing simple hoop bending machines usually include a compact integral main machine, in which the upper surface of the main machine is a workbench, and a machine head assembly for completing the bending work is arranged longitudinally on the workbench. The hydraulic transmission mechanism and the like are integrated into the main machine, in which the machine head assembly includes a turntable, a fixed axis located at the rotation center of the turntable, a swing axis eccentrically arranged on the turntable, and a block for limiting the abnormal swinging of the steel bar. When working, the steel bar is placed flat on the workbench, and the end to be bent is placed between the fixed axis and the swing axis, while the other end of the steel bar is held by the operator. After starting the machine, the swing axis swings around the fixed axis with the turntable to achieve the bending of the free end of the steel bar. In practice, since a steel hoop often needs to be bent at more than one part, such as the attached Figure 1 The steel bar hoop shown in the figure is approximately square and needs to be bent five times. Moreover, the sizes of this type of steel bar hoop vary. For the larger sizes of this type of steel bar hoop, the operator needs to stand in the center of the square steel bar hoop when processing the middle bends. The steel bar hoop will swing around the operator when bending. To prevent the steel bar from hurting the operator during bending, the operator must correctly estimate the swing direction of the steel bar, otherwise the operator will definitely be injured, requiring the operator to concentrate highly when working. At the same time, because the working table of this simple hoop bending machine is small, the operator needs to hold most of the steel bars with both hands when bending, and in order to improve work efficiency, three or four steel bars are often bent at the same time during actual operation, which increases the operator's work intensity. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a steel bar hoop bending machine which has a simple structure and is safe and convenient to operate.

[0005] The present invention achieves the above object by:

[0006] The present invention provides a steel bar hoop bending machine, comprising a main machine, a supporting and feeding trough transversely arranged on the side of the main machine, and a vertical support plate vertically arranged above the supporting and feeding trough, a head assembly extending transversely from the side of the main machine, the head assembly corresponding to the supporting and feeding trough, and the vertical support plate inclined toward the main machine and forming an acute angle with the horizontal plane.

[0007] Furthermore, the angle between the vertical support plate and the horizontal direction of the host is 72 degrees to 75 degrees.

[0008] Furthermore, the head assembly includes a turntable, a fixed axis located at the center of the turntable, and a swing axis offset from the center of the turntable, and the rotation plane of the swing axis is parallel to the vertical support plate.

[0009] Furthermore, the swing shaft is located below the fixed shaft.

[0010] Furthermore, a sub-platform with adjustable height is provided on the supporting feeding trough, and the top surface of the sub-platform is flush with the upper edge of the swing shaft.

[0011] Furthermore, there are two groups of the head components, and the sub-platform is located between the two groups of the head components.

[0012] Furthermore, a retaining edge is provided on the outer side of the auxiliary platform so as to be flippable via a hinge shaft.

[0013] Furthermore, the supporting feeding trough includes a plurality of feeding wheels rotatably mounted at the bottom, and the rotation direction of the feeding wheels is consistent with the working direction of the supporting feeding trough.

[0014] Furthermore, the feeding wheel is hinged to the supporting feeding trough through a rotating shaft swing frame and a rotating hinge, and a linkage plate is also connected to the outside of the sub-platform. The linkage plate extends laterally and is rotatably connected to the feeding wheel through a long hole at the free end, and the rotating shaft swing frames of the several feeding wheels are rotatably connected through a connecting rod.

[0015] Furthermore, a feed wheel is provided at the bottom of the vertical support plate, and the rolling direction of the feed wheel is consistent with the working direction of the supporting feed trough.

[0016] Beneficial effects of the present invention:

[0017] The present invention provides a steel bar hoop bending machine, including a main machine, a supporting feed trough and a vertical support plate are transversely arranged on the main machine side, wherein the vertical support plate is above the supporting feed trough, and a head assembly extending transversely from the main machine side corresponds to the position of the supporting feed trough, and the vertical support plate arranged longitudinally is inclined toward the main machine and forms an acute angle with the horizontal plane of the main machine. This simple steel bar hoop bending machine changes the original horizontally arranged workbench structure, uses the supporting feed trough to support the steel bars to be processed, changes the bending direction of the steel bars to be bent longitudinally, and simultaneously uses the vertical support plate to support the steel bars in the bending process. Not only does it not require the operator to support the weight of the steel bars by hand during the entire steel bar hoop processing process, which greatly reduces the burden on the operator, but also because the bending direction is longitudinal and inclined toward the main machine, it also avoids the possibility of hitting the operator during the bending process, greatly improving the safety of the hoop bending machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a working schematic diagram of an existing simple steel bar hoop bending machine;

[0020] Figure 2 It is a right side schematic diagram of an embodiment of the present invention;

[0021] Figure 3 for Figure 2 Schematic diagram of the overall structure;

[0022] Figure 4 for Figure 3 A is an enlarged schematic diagram.

[0023] In the figure, the main machine 1, the supporting feed trough 2, the auxiliary platform 21, the feed wheel 22, the hinge shaft 23, the retaining edge 24, the feed wheel 25, the rotating shaft swing frame 26, the rotating hinge 27, the connecting rod 28, the tension spring 29, the vertical support plate 3, the turntable 41, the fixed shaft 42, the swing shaft 43, the linkage plate 5, and the long hole 51. DETAILED DESCRIPTION

[0024] Figure 1-Figure 4 The specific structure of a steel bar hoop bending machine of the present invention is shown, including a main machine 1, a supporting feed trough 2 transversely arranged on the side of the main machine 1, and a vertical support plate 3 vertically arranged above the supporting feed trough 2, a head assembly extends transversely from the side of the main machine 1, the head assembly corresponds to the supporting feed trough 2, and the vertical support plate 3 is inclined toward the main machine 1 and forms an acute angle with the horizontal plane.

[0025] The main machine 1 is a rectangular structure as a whole, and its power mechanism is integrated into the chassis of the main machine 1, which makes the whole machine structure more centralized and compact. The small size of the machine body facilitates the movement of the whole machine and is suitable for mobile use on the construction site. Figure 2 , Figure 3As shown, its main operation position is on one side of the main machine 1, wherein the supporting feed trough 2 is arranged on one side of the operation position of the main machine 1 along the length direction of the main machine 1, and the trough-shaped structure is convenient for supporting the steel bars to be processed, and the operator drags the steel bars along the length direction of the supporting feed trough 2. The head assembly also extends out on one side of the operation position of the main machine 1, and the vertical support plate 3 is longitudinally arranged on one side of the operation position of the main machine 1. The vertical support plate 3 is connected with the supporting feed trough 2 at the bottom, and the extended position of the head assembly corresponds to the position of the supporting feed trough 2, that is, the fixed axis 42 and the swing axis 43 are both extended in the horizontal direction of the supporting feed trough 2, and the upper edge of the swing axis 43 is flush with the supporting surface of the supporting feed trough 2, so that the steel bars to be processed can pass through the processing position of the head assembly and move along the length direction of the supporting feed trough 2, and can also move or swing on the vertical support plate 3 in the longitudinal direction. In order to prevent the steel bar from tilting toward the operator during processing, the vertical support plate 3 is tilted slightly toward the main machine 1 as a whole, so that an acute angle is formed between the vertical support plate 3 and the horizontal plane of the main machine 1, so that the center of gravity of the steel bar moving or swinging along the vertical support plate 3 is close to the vertical support plate 3, and will not be biased toward the side of the operating position of the main machine 1. This vertically arranged vertical support plate 3 structure changes the existing method of bending the steel bar in the horizontal direction to the processing method of bending in the longitudinal direction. Since the movement trajectory of the steel bar bent in the longitudinal direction avoids the operator's body, the operating safety of the hoop bending machine is greatly improved.

[0026] Furthermore, the included angle between the vertical support plate 3 and the horizontal direction of the host 1 is 72 degrees to 75 degrees.

[0027] Considering the bending process and the convenience for the operator to easily remove the finished product after forming, and after many experiments, the preferred scheme of this angle is 70 degrees. In actual operation, three to four steel bars are often used for bending at the same time. Multiple steel bars will generate motion inertia during the bending process, and the steel bars may swing horizontally due to collision. Therefore, when the angle is greater than 75 degrees, this lateral swing will cause the steel bars to tilt toward the operator, which is prone to injury accidents. When it is less than 72 degrees, the center of gravity of the finished product is far away from the operator, so it is more difficult for the operator to remove the finished product from the vertical support plate 3.

[0028] Furthermore, the head assembly includes a turntable 41 , a fixed axis 42 located at the center of the turntable 41 , and a swing axis 43 offset from the center of the turntable 41 , and a rotation plane of the swing axis 43 is parallel to the vertical support plate 3 .

[0029] The hydraulic mechanism integrated in the main machine 1 drives the turntable 41 to rotate, and the fixed axis 42 located at the rotation center of the turntable 41 also rotates, the swing axis 43 is located at a position deviated from the fixed axis 42, and a gap for accommodating the steel bars to be processed is left between the fixed axis 42 and the swing axis 43. As the turntable 41 rotates, the fixed axis 42 rotates at the center of the turntable 41, and the swing axis 43 rotates around the center of the turntable 41. The steel bars to be bent are rotated and placed in the supporting feed trough 2, and the free ends of the steel bars are clamped between the fixed axis 42 and the swing axis 43. After the equipment is started, as the swing axis 43 swings, the free ends of the steel bars are bent into shape. Since the rotation plane of the swing axis 43, that is, the outer surface of the turntable 41, is parallel or coplanar with the vertical support plate 3, the bent end of the steel bar can be supported on the vertical support plate 3. During the bending process, after the swing shaft 43 is reset, the operator continues to drag the steel bar forward along the supporting feeding trough 2, and after the position is determined, the equipment is started to continue to complete the bending of the next position, until the entire steel bar hoop is formed, and the operator easily removes the workpiece from the vertical support plate 3. During the entire bending process, the weight of the steel bar is supported by the supporting trough 2 and the inclined vertical support plate 3. The operator only needs to drag the steel bar to complete the next process without bearing the gravity of the entire steel bar, which greatly reduces the burden on the operator. The bending direction of the steel bar is all along the vertical support plate 3. The bending process is far away from the operator, avoiding the possibility of injury to the operator during the bending process, and greatly improving the safety of the bending operation.

[0030] Furthermore, the swing shaft 43 is located below the fixed shaft 42 .

[0031] When the supporting feeding trough 2 is arranged in a horizontal direction, the steel bar is not prone to abnormal sliding when staying or moving in the supporting feeding trough 2, so it is safer and more reliable. When the swing shaft 43 is located below the fixed shaft 42, the effective swing time of the swing shaft 43 is shorter and the efficiency is higher.

[0032] Furthermore, the supporting feed trough 2 is also provided with a height-adjustable auxiliary platform 21 , and the top surface of the auxiliary platform 21 is flush with the upper edge of the swing shaft 43 .

[0033] Since the diameter of the steel bars processed on the construction site varies according to the needs, in order to make the equipment suitable for steel bars of various specifications, the gap between the swing shaft 43 and the fixed shaft 42 can be made as large as possible, that is, when the distance is the largest, it can be used to process the steel bars of the largest diameter commonly used. When it is necessary to process other steel bars with smaller diameters, sleeves with different outer diameters are set on the swing shaft 43 to adjust the gap between the sleeve and the fixed shaft 42 to adapt to the steel bars of the corresponding diameter. The auxiliary platform 21 is set close to the head assembly, which can be used to support and arrange the steel bars to be processed, and to facilitate the clamping of the ends of the steel bars between the fixed shaft 42 and the swing shaft 73. Therefore, the top surface of the auxiliary platform 21 needs to be in the same plane as the upper edge of the swing shaft 43. In order to adapt to steel bars of different diameters, the height of the auxiliary platform 21 can be adjusted by setting a matching adjusting screw and nut at the bottom.

[0034] Furthermore, there are two groups of the head components, and the sub-platform 21 is located between the two groups of the head components.

[0035] Since commonly used steel bar hoops have multiple bending positions, when two sets of machine head assemblies are set up, you can also choose to bend the other end of the steel bar. This can minimize the swing amplitude of the steel bar in the subsequent bending section, and also provide an additional bending process option for processing steel bar hoops of different shapes.

[0036] Furthermore, a retaining edge 24 is provided on the outer side of the auxiliary platform 21 so as to be flippable via a hinge shaft 23 .

[0037] Since the vertical support plate 3 has an inclination angle to the main machine 1 relative to the vertical direction, and the supporting feed trough 2 is vertically arranged relative to the vertical support plate 3, the steel bars supported therein have a component force leaning toward the main machine 1, so the steel bars will not move outward under normal circumstances. However, in order to avoid uncertain factors in the bending process of the steel bars, the retaining edge 24 arranged on the outside of the auxiliary platform 21 can be turned to press the steel bars to be processed against the turntable 41 in the horizontal direction, so that the steel bars are always limited in the horizontal direction during the bending process, thereby improving the safety of the processing process. As shown in the attached figure, a tension spring 29 is also arranged in the middle of the retaining edge 24, and the other end of the tension spring 29 is fixed on the auxiliary platform 21. The retaining edge 24 is turned relative to the auxiliary platform 21 through the hinge shaft 23. When turning upward, the retaining edge 24 is stuck on the auxiliary platform 21, and the tension spring 29 is tightened to prevent the retaining edge 24 from loosening. When the connecting edge 24 is turned downward, it will be separated from the auxiliary platform 21.

[0038] Furthermore, the supporting and feeding trough 2 includes a plurality of feeding wheels 22 rotatably mounted at the bottom, and the rotation direction of the feeding wheels 22 is consistent with the working direction of the supporting and feeding trough 2 .

[0039] The specific structure of the feeding wheel 22 can be a roller or a ball joint. For construction sites with heavy dust, a rotating shaft can be preferred, or a structure with a sleeve added to the rotating shaft can be used.

[0040] Furthermore, the feeding wheel 22 is hinged on the supporting feeding trough 2 through a rotating shaft swing frame 26 and a rotating hinge 27. A linkage plate 5 is also connected to the outside of the sub-platform 21. The linkage plate 5 extends laterally and is rotatably connected to the feeding wheel 22 through a long hole 51 at the free end. The rotating shaft swing frames 26 of the several feeding wheels 22 are rotatably connected through a connecting rod 28.

[0041] The rotating shaft swing frame 26 can swing forward and backward along the rotating hinge 27 arranged laterally to support the feeding trough 2, so that the height of the feeding wheel 22 hinged on the rotating shaft swing frame 26 can be changed to adapt to the required supporting height of the steel bar. When the height of the auxiliary platform 21 is adjusted, the linkage plate 5 connected to the outer side of the auxiliary platform 21 also rises and falls synchronously. Since the feeding wheel 22 penetrates into the long hole 51 at the free end of the linkage plate 5, the long hole 51 drives the corresponding feeding wheel 22 to swing relative to the rotating hinge 27 as the linkage plate 5 rises and falls. At the same time, since the rotating shaft swing frames 26 of several feeding wheels 22 extend below the corresponding rotating hinge 27 and are rotatably connected to each other through the connecting rod 28, when the feeding wheel 22 rotatably connected to the long hole 51 swings, the remaining feeding wheels 22 also swing synchronously under the action of the connecting rod 28, so that the height of each feeding wheel 22 and the auxiliary platform 21 is always consistent, and the operation is simple and practical.

[0042] Furthermore, a feed wheel 25 is provided at the bottom of the vertical support plate 3 , and the rolling direction of the feed wheel 25 is consistent with the working direction of the supporting feed trough 2 .

[0043] There are multiple feed wheels 25 along the supporting feed trough 2, and their height positions are consistent with the gap between the fixed axis 42 and the swing axis 43. The outer edge of the feed wheel 25 is consistent with the top surface of the turntable 41. This ensures that when the steel bars move along the supporting feed trough 2, the side surfaces of the steel bars are close to the outer edges of the feed wheels 25, and the rolling of the feed wheels 25 helps to move the steel bars.

[0044] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the claims and scope of the present invention should belong to the scope covered by the claims of the present invention.

Claims

1. A steel bar bending machine, characterized in that: The machine comprises a main machine (1), a supporting feed trough (2) arranged transversely on the side of the main machine (1), and a vertical support plate (3) arranged vertically above the supporting feed trough (2); a head assembly extends transversely on the side of the main machine (1), the head assembly corresponds to the supporting feed trough (2), the vertical support plate (3) is inclined toward the main machine (1) and forms an acute angle with a horizontal plane; the head assembly comprises a turntable (41), a fixed axis (42) located at the center of the turntable (41), and a swing axis (43) offset from the center of the turntable (41), the rotation plane of the swing axis (43) is parallel to the vertical support plate (3), the swing axis (43) is located below the fixed axis (42), and the supporting feed trough (2) is also provided with an adjustable height The supporting feeding trough (2) comprises a plurality of feeding wheels (22) rotatably mounted at the bottom, the rotation direction of the feeding wheels (22) being consistent with the working direction of the supporting feeding trough (2), the feeding wheels (22) being hinged to the supporting feeding trough (2) via a rotating shaft swing frame (26) and a rotating hinge (27), the auxiliary platform (21) is further connected to a linkage plate (5), the linkage plate (5) extending transversely and being rotatably connected to the feeding wheel (22) via a long hole (51) at a free end, and the rotating shaft swing frames (26) of the plurality of feeding wheels (22) being rotatably connected via a connecting rod (28).

2. The steel bar bending machine according to claim 1, characterized in that: The included angle between the vertical support plate (3) and the horizontal direction of the main machine (1) is 72 degrees to 75 degrees.

3. The steel bar bending machine according to claim 1, characterized in that: There are two groups of machine head components, and the auxiliary platform (21) is located between the two groups of machine head components.

4. The steel bar bending machine according to claim 1, characterized in that: The outer side of the auxiliary platform (21) is provided with a retaining edge (24) which can be turned over via a hinge shaft (23).

5. The steel bar bending machine according to claim 1, characterized in that: A feed wheel (25) is provided at the bottom of the vertical support plate (3), and the rolling direction of the feed wheel (25) is consistent with the working direction of the supporting feed trough (2).

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