Automatic hoop bending and welding production line for polygonal special-shaped stirrups

Abstract

The utility model discloses an automatic hoop bending and welding production line for multilateral special-shaped stirrups, which relates to the technical field of reinforcing steel bar bending and welding all-in-one machines and comprises a reinforcing steel bar raw material placing frame, a welding robot, a stacking robot, a reinforcing steel bar straightening and bending device, a semi-finished product positioning and dragging device, a positioning and welding device and a reinforcing steel bar placing frame. Steel bars are straightened, conveyed and bent through the steel bar straightening and bending device, the bent steel bars are pre-positioned through the semi-finished product positioning and dragging device, the pre-positioned steel bars are cut off through the guiding and bending device, and the periphery of the steel bars can be accurately and comprehensively positioned through the positioning and welding device. According to the production line, the steel bars are placed on the steel bar placing frame, the position deviation of the steel bars during welding is avoided, the machining quality of the steel bars is improved, the stacking robot places the welded steel bars into the steel bar placing frame, the production line can automatically and continuously complete straightening, conveying, bending, pre-positioning, cutting-off, positioning welding, stacking and finished product placing of the steel bars, and the steel bar machining efficiency of the production line is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar bending and welding integrated machines, in particular to an automatic bending and welding production line for multi-sided special-shaped stirrups. Background Art

[0002] The full-automatic stirrup bending machine can straighten and bend cold-rolled ribbed steel bars, hot-rolled grade III steel bars, plain round steel bars, non-ferrous round materials, etc. with a diameter of 4-10 mm. The full-automatic stirrup bending machine is simple to operate, has a high degree of automation, is convenient to adjust, and has a high production efficiency. It can be applied to the processing and production of stirrups in units such as cement precast component factories, cement product factories, construction sites, and steel markets.

[0003] For example, Chinese Patent CN213164090U discloses a stirrup bending and welding machine, which includes a power machine box, a bending device, a welding device, and a cutting device. The power machine box includes a top surface, a bottom surface, and a plurality of side surfaces, and the top surface and the bottom surface are opposite; a bending device is arranged on one side surface of the power machine box, and the power machine box is used to drive the bending device so that the bending device bends the steel bar into an unclosed stirrup; a welding device and a cutting device are arranged on the top surface of the power machine box. The welding device is used for welding the intersection of the stirrups to make the stirrup closed, and the cutting device is used for cutting off the redundant steel bar part after the stirrup is closed.

[0004] However, in the prior art, when the steel bar bending and welding integrated machine processes steel bars, it usually straightens the steel bars first, then bends and shears them, and then bends and welds the stirrups. After the welding is completed, the next steel bar can be processed. This processing method cannot continuously bend and weld the steel bars, resulting in low processing efficiency. At the same time, when the existing stirrup bending machine positions the bent steel bars, it usually uses the side limiting method, which cannot accurately position the stirrups comprehensively, resulting in the situation of welding position deviation when welding the stirrups, affecting the processing quality of the steel bars. In view of the above problems, an automatic bending and welding production line for multi-sided special-shaped stirrups is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problems existing in the prior art, and an automatic bending and welding production line for multi-sided special-shaped stirrups is proposed.

[0006] To achieve the above object, the utility model adopts the following technical solutions: an automatic bending and welding production line for multi-sided special-shaped stirrups, including a steel bar raw material placement rack, a welding robot and a palletizing robot, and further including a steel bar straightening and bending device, a semi-finished product positioning and dragging device, a positioning welding device and a steel bar placement rack. One end of the steel bar straightening and bending device is fixedly installed with one end of the semi-finished product positioning and dragging device. The steel bar straightening and bending device is used for straightening, wire feeding and bending of steel bars. The semi-finished product positioning and dragging device is used for pre-positioning the scattered steel bars after bending and dragging the pre-positioned steel bars to the positioning welding device. The positioning welding device is used for surrounding positioning and pressing of steel bars.

[0007] The steel bar straightening and bending device includes a straightening and conveying device and a guiding and bending device. One end of the guiding and bending device is fixedly installed with one end of the straightening and conveying device, and a rotating disc is rotatably installed at the bottom end of the guiding and bending device.

[0008] The semi-finished product positioning and dragging device includes a support frame, a bottom positioning and clamping device and two top positioning components. A plurality of side positioning devices are symmetrically installed at both ends of the support frame, and a rubber buffer pad is fixedly connected to one end of the side positioning device. A thickness pressing device is symmetrically and fixedly installed at one end of the support frame, and a dragging device is fixedly installed at the bottom of the two top positioning components.

[0009] The positioning welding device includes a table board. A plurality of pressing devices are symmetrically and fixedly installed at both ends of the top of the table board. Two bottom positioning devices are symmetrically and fixedly installed at one end of the table board, and a plurality of outer positioning devices are symmetrically and fixedly installed at the other end of the table board.

[0010] Preferably, the two ends of the top of the support frame are welded to the two ends of the top of the bottom positioning and clamping device, and one end of the top positioning component is fixedly installed with one end of the guiding and bending device.

[0011] Preferably, the steel bar placement rack includes a chain guiding device and a motor. Double-row bent plate chains are symmetrically arranged at both ends of the chain guiding device.

[0012] Preferably, chain pressing devices are symmetrically and fixedly installed at both ends of the chain guiding device. The chain pressing devices are used to prevent the steel bars from tilting.

[0013] Preferably, limiting devices are symmetrically and fixedly installed at one end of the chain guiding device, and side guiding devices are symmetrically and fixedly installed at the other end of the chain guiding device.

[0014] Preferably, a plurality of hooks are fixedly installed on the outer side of the double-row bent plate chains. The hooks are used for hoisting steel bars.

[0015] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0016] 1. In the present utility model, the steel bar straightening and bending device is used to straighten, convey and bend the steel bars. The semi-finished product positioning and dragging device pre-positions the bent steel bars, the guiding and bending device cuts the pre-positioned steel bars, the positioning and welding device fully positions and welds the cut steel bars, and then the palletizing robot places the welded steel bars into the steel bar placement rack. Through this production line, the straightening, conveying, bending, pre-positioning, cutting, positioning welding, palletizing and finished product placement of steel bars can be automatically and continuously completed, improving the steel bar processing efficiency of this production line.

[0017] 2. In the present utility model, by setting the positioning and welding device, the bottom positioning device performs bottom positioning on the cut steel bars, the outer side positioning device performs multi-angle positioning on the outer side of the cut steel bars. After the position of the inner steel bars is determined by the linear robot, the positioning is carried out by the method of finger clamping. After the positioning is completed, the pressing device cylinder contracts to press the steel bars. Through the combination of the bottom positioning device, the outer side positioning device and the pressing device, the positioning and welding device can accurately perform full-round positioning and pressing on the steel bars. After all the positioning is completed, the welding robot then performs welding operations on the necessary welding points, avoiding the situation of welding position deviation during the welding of stirrups and improving the processing quality of steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic three-dimensional structure diagram of the automatic stirrup bending and welding production line for multi-sided special-shaped stirrups proposed by the present utility model;

[0019] Figure 2 is a schematic structural diagram of the steel bar straightening and bending device of the automatic stirrup bending and welding production line for multi-sided special-shaped stirrups proposed by the present utility model;

[0020] Figure 3 is a schematic structural diagram of the semi-finished product positioning and dragging device of the automatic stirrup bending and welding production line for multi-sided special-shaped stirrups proposed by the present utility model;

[0021] Figure 4 is a front view of the semi-finished product positioning and dragging device of the automatic stirrup bending and welding production line for multi-sided special-shaped stirrups proposed by the present utility model;

[0022] Figure 5 is a top view of the semi-finished product positioning and dragging device of the automatic stirrup bending and welding production line for multi-sided special-shaped stirrups proposed by the present utility model;

[0023] Figure 6 is a schematic structural diagram of the positioning and welding device of the automatic stirrup bending and welding production line for multi-sided special-shaped stirrups proposed by the present utility model;

[0024] Figure 7This is a schematic structural diagram of the steel bar placement rack of the automatic bent hoop welding production line for multi-sided special-shaped stirrups of the present utility model.

[0025] Legend: 1. Steel bar raw material placement rack; 2. Steel bar straightening and bending device; 3. Semi-finished product positioning and dragging device; 4. Positioning welding device; 5. Steel bar placement rack; 6. Welding robot; 7. Palletizing robot; 21. Straightening and conveying device; 22. Guiding and bending device; 23. Rotating disc; 31. Support frame; 32. Side positioning device; 33. Thickness pressing device; 34. Bottom positioning and clamping device; 35. Top positioning component; 36. Dragging device; 37. Rubber buffer pad; 41. Table panel; 42. Pressing device; 43. Bottom positioning device; 44. Outer side positioning device; 51. Double-row bent plate chain; 52. Hook; 53. Chain pressing device; 54. Chain guiding device; 55. Limiting device; 56. Side guiding device; 57. Motor. Detailed implementation manners

[0026] In order to more clearly understand the above objects, features and advantages of the present utility model, the following further describes the present utility model in conjunction with the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0027] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0028] Embodiment 1: As Figure 1 - Figure 6 shown, the present utility model provides an automatic bent hoop welding production line for multi-sided special-shaped stirrups, including a steel bar raw material placement rack 1, a welding robot 6 and a palletizing robot 7, and further including a steel bar straightening and bending device 2, a semi-finished product positioning and dragging device 3, a positioning welding device 4 and a steel bar placement rack 5. One end of the steel bar straightening and bending device 2 is fixedly installed with one end of the semi-finished product positioning and dragging device 3. The steel bar straightening and bending device 2 is used for straightening, wire feeding and bending of steel bars. The semi-finished product positioning and dragging device 3 is used for pre-positioning the scattered steel bars after bending and dragging the pre-positioned steel bars to the positioning welding device 4. The positioning welding device 4 is used for four-sided positioning and pressing of the steel bars;

[0029] The steel bar straightening and bending device 2 includes a straightening and conveying device 21 and a guiding and bending device 22. One end of the guiding and bending device 22 is fixedly installed with one end of the straightening and conveying device 21, and a rotating disc 23 is rotatably installed at the bottom end of the guiding and bending device 22;

[0030] The semi-finished product positioning and dragging device 3 includes a support frame 31, a bottom positioning and clamping device 34, and two top positioning components 35. A plurality of side positioning devices 32 are symmetrically installed at both ends of the support frame 31, and a rubber buffer pad 37 is fixedly connected to one end of the side positioning device 32. A thickness pressing device 33 is symmetrically and fixedly installed at one end of the support frame 31. A dragging device 36 is fixedly installed at the bottom of the two top positioning components 35. The two ends of the top of the support frame 31 are welded to the two ends of the top of the bottom positioning and clamping device 34. One end of the top positioning component 35 is fixedly installed with one end of the guiding and bending device 22;

[0031] The positioning and welding device 4 includes a tabletop 41. A plurality of pressing devices 42 are symmetrically and fixedly installed at both ends of the top of the tabletop 41. Two bottom positioning devices 43 are symmetrically and fixedly installed at one end of the tabletop 41, and a plurality of outer positioning devices 44 are symmetrically and fixedly installed at the other end of the tabletop 41.

[0032] The specific settings and functions of this embodiment are described in detail below: The steel bar enters the steel bar straightening and bending device 2. The straightening and conveying device 21 of the steel bar straightening and bending device 2 first straightens and conveys the steel bar. The steel bar is conveyed to the guiding and bending device 22, and then the guiding and bending device 22 bends the steel bar according to the programmed bending quantity, angle, and speed. At the same time of bending, the rotating disc 23 rotates with the angular velocity of bending. After the bending is completed, the steel bar is not cut temporarily. Immediately afterwards, the side positioning device 32 in the semi-finished product positioning and dragging device 3 performs side positioning on the bent steel bar (after the cylinder pushes down the horizontally pushing cylinder, the horizontally pushing guide rod cylinder then pushes out the positioning plate, not shown in the figure). By installing a rubber buffer pad 37 at the positioning end of the side positioning device 32, it can prevent the impact on the rotating disc 23 from being too large when the cylinder drops, and avoid damage to the rotating disc 23. The top positioning component 35 positions the top of the steel bar (the basic principle of top positioning is the same as that of side positioning. The cylinder first pushes down and then horizontally pushes out, not shown in the figure), so as to pre-position the scattered steel bars. Subsequently, the bottom positioning and clamping device 34 clamps the bottom of the steel bar. Then, the thickness pressing device 33 presses down on the steel bar. After the bottom positioning and clamping device 34 clamps the bottom of the steel bar, it slightly lifts. The guiding and bending device 22 performs a cutting operation on the steel bar to completely separate it from the guiding and bending device 22. The dragging device 36 drags the steel bar to the top of the positioning and welding device 4;

[0033] The bottom positioning device 43 positions the bottom of the cut steel bars, and the outer positioning device 44 positions the cut steel bars at multiple angles on the outside (the cylinder raises the positioning plate to clamp and position the outside of the steel bars, not shown in the figure). After the position of the inner steel bars is determined by the linear robot, the positioning is carried out by means of finger clamping. After the positioning is completed, the cylinder of the pressing device 42 contracts to press the steel bars, so that the positioning and welding device 4 positions and presses the steel bars all around. After all the positioning is completed, the welding robot 6 performs welding operations on the necessary welding points. By setting the positioning and welding device 4, in combination with the bottom positioning device 43, the outer positioning device 44, and the pressing device 42, during welding, the positioning and welding device 4 can accurately position and press the steel bars all around, avoiding the situation of welding position deviation when welding the stirrups and improving the processing quality of the steel bars.

[0034] Embodiment 2: As Figure 1 and Figure 7 shown, the steel bar placement rack 5 includes a chain guiding device 54 and a motor 57. Double-row bent plate chains 51 are symmetrically arranged at both ends of the chain guiding device 54. Chain pressing devices 53 are symmetrically and fixedly installed at both ends of the chain guiding device 54. The chain pressing devices 53 are used to prevent the steel bars from tilting. Limiting devices 55 are symmetrically and fixedly installed at one end of the chain guiding device 54. Side guiding devices 56 are symmetrically and fixedly installed at the other end of the chain guiding device 54. A plurality of hooks 52 are fixedly installed on the outside of the double-row bent plate chains 51. The hooks 52 are used for hoisting the steel bars.

[0035] The overall effect achieved by the entire embodiment is that after the steel bar welding operation is completed, the palletizing robot 7 grabs the welded steel bars and prepares to place them into the steel bar placement rack 5. The hoisting device (not shown in the figure) of the steel bar placement rack 5 rotates the hook 52 to the receiving position. The palletizing robot 7 places the steel bars on the hook 52. Subsequently, the palletizing robot 7 resets. The motor 57 drives the double-row bent plate chains 51 to rotate, thereby driving the hook 52 and the steel bars to move. The chain pressing device 53 prevents the steel bars from tilting. At the same time, the side guiding device 56 of the sheet metal baffle can prevent the steel bars from slipping to both sides during any movement process. When the steel bars move to the limiting device 55 along with the hook 52, the limiting device 55 automatically unhooks the steel bars after they move into place. The hoisting device rotates the hook 52 and moves backward to a discharging position, waiting for the next discharging operation. Through this production line, the straightening, conveying, bending, pre-positioning, cutting, positioning welding, palletizing, and finished product placement of the steel bars can be automatically and continuously completed, improving the steel bar processing efficiency of this production line.

[0036] Usage method and working principle of the device: When using this device to process steel bars, first place the steel bars to be processed on the steel bar raw material placement rack 1. The steel bars enter the steel bar straightening and bending device 2. The straightening and conveying device 21 first straightens and conveys the steel bars, and then the guiding and bending device 22 bends the steel bars according to the programmed bending quantity, angle and speed. At the same time of bending, the rotating disc 23 rotates with the angular velocity of bending. After the bending is completed, the steel bars are not cut temporarily. Immediately afterwards, the side positioning device 32 positions the bent steel bars on the side, and the top positioning component 35 positions the top of the steel bars, so as to pre-position the scattered steel bars. Subsequently, the bottom positioning and clamping device 34 clamps the bottom of the steel bars. Then, the thickness pressing device 33 presses the steel bars. After the bottom positioning and clamping device 34 clamps the bottom of the steel bars, it slightly lifts. The guiding and bending device 22 performs a cutting operation on the steel bars to completely separate them from the guiding and bending device 22. The dragging device 36 drags the steel bars to the top of the positioning and welding device 4;

[0037] The bottom positioning device 43 positions the bottom of the cut steel bars, and the outer side positioning device 44 positions the cut steel bars at multiple angles on the outer side. After the position of the inner steel bars is determined by the linear robot, they are positioned by means of finger clamping. After the positioning is completed, the cylinder of the pressing device 42 contracts to press the steel bars, so that the positioning and welding device 4 positions and presses the steel bars all around. After all the positioning is completed, the welding robot 6 performs welding operations on the necessary welding points. By setting the positioning and welding device 4, the combination of the bottom positioning device 43, the outer side positioning device 44 and the pressing device 42 can accurately position and press the steel bars all around during welding, avoiding the situation of welding position deviation when welding stirrups and improving the processing quality of the steel bars;

[0038] After the welding operation is completed, the palletizing robot 7 grabs the welded steel bars and is ready to put them into the steel bar placement rack 5. The lifting device of the steel bar placement rack 5 rotates the lifting hook 52 to the receiving position. The palletizing robot 7 places the steel bars on the lifting hook 52. The motor 57 drives the double-row bent plate chain 51 to rotate, so as to drive the lifting hook 52 and the steel bars to move. The chain pressing device 53 prevents the steel bars from tilting. At the same time, the side guiding device 56 of the sheet metal baffle can prevent the steel bars from slipping to both sides during any movement process. When the steel bars move to the limiting device 55 along with the lifting hook 52, the limiting device 55 automatically unhooks the steel bars after they move in place. The lifting device rotates the lifting hook 52 and moves backward to a discharging position, waiting for the next discharging operation.

[0039] The above are only the preferred embodiments of the present utility model, and do not limit the present utility model in other forms. Any person skilled in the relevant art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A production line for automatically bending and welding multi-sided special-shaped stirrups, comprising a steel bar raw material placement rack (1), a welding robot (6) and a stacking robot (7), characterized in that: It also includes a steel bar straightening and bending device (2), a semi-finished product positioning and dragging device (3), a positioning welding device (4) and a steel bar placement frame (5), one end of the steel bar straightening and bending device (2) is fixedly installed with one end of the semi-finished product positioning and dragging device (3), the steel bar straightening and bending device (2) is used to straighten, feed wires and bend steel bars, the semi-finished product positioning and dragging device (3) is used to pre-position scattered steel bars after bending, and drag the pre-positioned steel bars away to the positioning welding device (4), and the positioning welding device (4) is used to position and press the steel bars on all sides; The steel bar straightening and bending device (2) comprises a straightening and conveying device (21) and a guide and bending device (22), one end of the guide and bending device (22) is fixedly mounted on one end of the straightening and conveying device (21), and a rotating disc (23) is rotatably mounted on the bottom end of the guide and bending device (22); The semi-finished product positioning and dragging device (3) comprises a support frame (31), a bottom positioning and clamping device (34) and two top positioning assemblies (35); a plurality of side positioning devices (32) are symmetrically mounted at both ends of the support frame (31), and one end of the side positioning device (32) is fixedly connected to a rubber buffer pad (37); a thickness pressing device (33) is symmetrically fixedly mounted at one end of the support frame (31); and a dragging device (36) is fixedly mounted at the bottom of the two top positioning assemblies (35); The positioning welding device (4) comprises a desktop panel (41), a plurality of clamping devices (42) are symmetrically fixedly installed at both ends of the top of the desktop panel (41), two bottom positioning devices (43) are symmetrically fixedly installed at one end of the desktop panel (41), and a plurality of outer positioning devices (44) are symmetrically fixedly installed at the other end of the desktop panel (41).

2. The automatic bending and welding production line for multi-sided special-shaped stirrups according to claim 1 is characterized in that: The top ends of the support frame (31) are welded to the top ends of the bottom positioning and clamping device (34), and one end of the top positioning component (35) is fixedly mounted to one end of the guide bending device (22).

3. The automatic bending and welding production line for polygonal special-shaped stirrups according to claim 1 is characterized in that: The steel bar placement rack (5) comprises a chain guide device (54) and a motor (57). Double rows of bent plate chains (51) are symmetrically arranged at both ends of the chain guide device (54).

4. The automatic bending and welding production line for multi-sided special-shaped stirrups according to claim 3 is characterized in that: Chain pressing devices (53) are symmetrically fixedly installed at both ends of the chain guide device (54), and the chain pressing devices (53) are used to prevent the steel bars from tilting.

5. The automatic bending and welding production line for polygonal special-shaped stirrups according to claim 3 is characterized in that: A limiting device (55) is symmetrically fixedly installed on one end of the chain guide device (54), and a side guide device (56) is symmetrically fixedly installed on the other end of the chain guide device (54).

6. The automatic bending and welding production line for multi-sided special-shaped stirrups according to claim 3 is characterized in that: A plurality of hooks (52) are fixedly mounted on the outer side of the double-row bent plate chain (51), and the hooks (52) are used for hoisting steel bars.

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