Insulated reinforcing bar bender

Abstract

The utility model provides an insulating reinforcing bar bending machine, including frame, five sets of bending devices are installed above frame in left and right directions, and are in order from left to right one bending device, second bending device, third bending device, fourth bending device, fifth bending device, one bending device, fifth bending device are installed on slide rail through the left and right sliding of sliding block, and slide rail is fixedly connected on frame, and second bending device, third bending device, fourth bending device are all fixedly connected on frame or slide rail, positioning baffle is installed on one side of five sets of bending devices, and positioning cylinder is installed on the other side, and the blanking bottom plate is fixedly connected on the frame above the bending device, and the blanking guide plate is fixedly installed in the front of blanking bottom plate, and the material guide device is installed in the middle below five sets of bending devices, and the equipment realizes the automatic bending forming of product.

Description

Technical Field

[0001] This invention relates to bending machines, and more particularly to an insulated steel bar bending machine used on high-speed trains, belonging to the field of mechanical equipment technology. Background Technology

[0002] In the application of reinforcing steel, steel bars produced on a large scale in factories are generally transported to deep-processing plants or application sites. The coiled or bundled steel bars undergo straightening and shearing processes, followed by bending, welding, and threading according to product requirements, ultimately forming ready-to-use steel bar products. As a major supporting industry for prefabricated buildings, the domestic prefabricated steel bar industry is still in its development stage. For prefabricated steel bars with large market demand and relatively regular product shapes, a series of standardized processing equipment has been developed, such as straightening machines, bending machines, and welding machines. Other prefabricated steel bar products, due to their diverse characteristics, are mostly produced manually using some general-purpose simple equipment. There is significant room for improvement in production efficiency and product quality. In the sleeper slabs of high-speed railway ballastless track, a type of prefabricated steel bar is used (see attached image for shape). Figure 7 This product has 5 bending processes, and at the two bending points at the closed end, a certain length of plastic sleeve needs to be inserted in advance. Figure 7 The plastic sleeve is only shown in the last step (in the text). Currently, its bending and forming also uses a common benchtop bending machine, relying on manual operation to bend it five times in sequence to finally form the product shape. This production method results in low production efficiency, poor product shape consistency, and difficulty in quality control for steel products. Summary of the Invention

[0003] The purpose of this invention is to overcome the aforementioned problems in the production and manufacturing of high-speed rail insulating steel bars and to provide an insulating steel bar bending machine.

[0004] To achieve the objective of this invention, the following technical solution is adopted: An insulated steel bar bending machine includes a frame, on which five bending devices are installed in the left-right direction above the frame, namely bending device No. 1, bending device No. 2, bending device No. 3, bending device No. 4, and bending device No. 5 from left to right. Each bending device includes a bearing seat, in which a gear is rotatably mounted. The gear has an axial central hole at its center, and a window is provided on one side of the bearing seat. A rack meshes with the gear through the window, and the rack is fixedly connected to the actuating end of the bending cylinder. A mandrel is slidably inserted, and the mandrel is fixedly connected to the actuating end of the mandrel cylinder. The mandrel cylinder, bending cylinder, and bearing seat are all fixedly connected. A bending arm is fixedly connected to the gear, and a bending roller is rotatably installed on the bending arm. The bending roller is offset from the center of the gear. The No. 1 bending device and the No. 5 bending device are slidably mounted on the slide rail by a slider. The slide rail is fixedly connected to the frame. A spring is connected between the slider and the frame. One end of the spring is connected to the frame and the other end is connected to the slider. The No. 2 bending device, the No. 3 bending device, and the No. 4 bending device are all fixedly connected to the frame or the slide rail.

[0005] A positioning baffle is installed on one side of the five bending devices, and a positioning cylinder is installed on the other side. A push plate is fixedly connected to the cylinder rod of the positioning cylinder. The outer baffle, the positioning cylinder and the bending arm are corresponding to each other on the left and right.

[0006] A blanking base plate is fixedly connected to the upper frame of the bending device, and a blanking guide plate is fixedly installed in front of the blanking base plate, with the lower end of the blanking guide plate pointing towards the mandrel.

[0007] A material guiding device is installed at the bottom center of the five bending devices. The material guiding device includes a guide rail, the direction of which is consistent with the movement direction of the bending cylinder. A material guiding plate is slidably installed on the guide rail. One side of the material guiding plate has a forward bending part and the other side has a backward bending part. One end of the material guiding cylinder is hinged to the frame and the other end is hinged to the material guiding plate.

[0008] Furthermore, a limiting arm is fixedly connected to the slider, and two limiting baffles are fixedly installed on the frame, with the limiting arm located between the two limiting baffles.

[0009] Furthermore, a fixed plate is fixedly connected to the frame, and a V-shaped clamping arm is installed on the fixed plate. The lower end face of the clamping arm is located below the fixed plate. The rear end of the clamping arm is hinged to the cylinder rod of the clamping cylinder, the cylinder body of the clamping cylinder is hinged to the frame, and the middle of the clamping arm is rotatably connected to the frame.

[0010] Furthermore, a material detection proximity switch is installed on the fixed plate.

[0011] Furthermore, the bending device is tilted backward from bottom to top.

[0012] Furthermore, the material discharge base plate includes an upper inclined surface that slopes forward from top to bottom. Multiple elastic base plates are fixedly connected to the lower end of the inclined surface. A pressure tongue is hinged to the frame behind the elastic base plate. The middle part of the pressure tongue is hinged to the frame, and the rear end of the pressure tongue is hinged to the cylinder rod of the pressure tongue driving cylinder. The cylinder body of the pressure tongue driving cylinder is hinged to the frame. A material sensing switch is installed on the inclined surface. The material discharge baffle consists of multiple elastic baffles corresponding to the elastic base plate located in front of the elastic base plate. The lower end of the elastic baffle has a rearward bending portion.

[0013] Furthermore, the mandrel has an annular groove, and the bending roller also has an annular groove.

[0014] The positive and beneficial technical effects of this invention are as follows: the blank enters the equipment accurately and reliably, with minimal impact on the equipment, realizing automated bending and forming of products, eliminating the influence of human factors such as the skill level and proficiency of operators, and greatly improving product quality and production efficiency. Attached Figure Description

[0015] Figure 1 This is an overall schematic diagram of one direction of the present invention.

[0016] Figure 2 This is an overall schematic diagram of another direction of the present invention.

[0017] Figure 3 This is a partially enlarged schematic diagram of the image.

[0018] Figure 4 This is a schematic diagram of the first bending device of the present invention.

[0019] Figure 5 This is a partial cross-sectional schematic diagram of the bending device.

[0020] Figure 6 This is a schematic diagram of the bending device with the bearing housing and part of the outer shell removed.

[0021] Figure 7 This is a schematic diagram of the process of using a product that is bent by itself. Detailed Implementation

[0022] To more fully explain the implementation of the present invention, implementation examples are provided. These implementation examples are merely illustrative of the present invention and do not limit the scope of the present invention.

[0023] The invention will be further explained in detail with reference to the accompanying drawings, in which the following references are given: 1: frame; 2: bending device 1; 3: bending device 2; 4: bending device 3; 5: bending device 4; 6: bending device 5; 7: inclined plane; 8: elastic base plate; 9: elastic baffle; 10: tongue-pressing drive cylinder; 11: tongue-pressing; 12: positioning cylinder; 13: positioning baffle; 14: pressure arm; 15: fixing plate; 16: guide. 17: Guide plate; 18: Slide plate; 19: Guide cylinder; 20: Pressing cylinder; 21: Limiting arm; 22: Limiting baffle; 23: Slide rail; 24: Slider; 25: Spring; 26: Forward bending part; 27: Reverse bending part; 201: Bearing seat; 202: Gear; 203: Rack; 204: Bending cylinder; 205: Bending arm; 206: Bending roller; 207: Mandrel; 208: Mandrel cylinder.

[0024] An insulated rebar bending machine includes a frame 1. Five bending devices are installed on the top of the frame in a left-right direction, namely bending device 2, bending device 3, bending device 4, bending device 5, and bending device 6 from left to right. Each bending device includes a bearing seat 201, a gear 202 rotatably mounted in the bearing seat, the gear having an axial central hole, and a window on one side of the bearing seat. A rack 203 meshes with the gear through the window and is fixedly connected to the actuating end of a bending cylinder 204. A mandrel 207 slides through the central hole of the gear and is fixedly connected to the actuating end of a mandrel cylinder 208. The mandrel cylinder, the bending cylinder, and the bearing seat are all fixedly connected. A bending arm 205 is fixedly connected to the gear, and a bending roller 206 is rotatably mounted on the bending arm, the bending roller being offset from the center of the gear.

[0025] The mandrel has an annular groove, and the bending roller also has an annular groove. The reinforcing bar falls into the annular groove, allowing for better positioning. To further ensure accuracy during rack movement, a guide mechanism can be used on the rack. For example, a sliding guide block can be installed on the back of the rack, and a track that mates with the guide block can be installed inside the housing at the rack.

[0026] Bending devices No. 1 and No. 5 are slidably mounted on slide rails 23 via sliders 25. The slide rails are fixedly connected to the frame. A spring 25 connects the slider to the frame, with one end connected to the frame and the other end connected to the slider. Bending devices No. 2, No. 3, and No. 4 are all fixedly connected to the frame or the slide rails. A limit arm 21 is fixedly connected to the slider, and two limit baffles 22 are fixedly installed on the frame, with the limit arm located between the two limit baffles. The bending devices tilt backward from bottom to top.

[0027] A positioning baffle 13 is installed on one side of the five bending devices, and a positioning cylinder 12 is installed on the other side. A push plate is fixedly connected to the cylinder rod of the positioning cylinder. The outer baffle, the positioning cylinder and the bending arm are corresponding to each other on the left and right.

[0028] A material discharge base plate is fixedly connected to the upper frame of the bending device. A material discharge guide plate is fixedly installed in front of the material discharge base plate, and the lower end of the material discharge guide plate points towards the mandrel. In this embodiment, the material discharge base plate includes an inclined surface 7 that slopes forward from top to bottom. Multiple elastic base plates 8 are fixedly connected to the lower end of the inclined surface. A pressure tongue 11 is hinged to the frame behind the elastic base plate. The middle part of the pressure tongue is hinged to the frame, and the rear end of the pressure tongue is hinged to the cylinder rod of the pressure tongue driving cylinder 10. The cylinder body of the pressure tongue driving cylinder is hinged to the frame. A material sensing switch is installed on the inclined surface. The material sensing switch can be a photoelectric switch, which can detect whether the material has passed through. The material discharge baffle consists of multiple elastic baffles 9 located in front of the elastic base plate, corresponding to the elastic base plate. The lower end of the elastic baffle has a backward bending part. The bending part points towards the mandrel. In this embodiment, because the steel bar falls at a relatively fast speed, after the material sensing switch detects the material passing through, it can drive the pressure tongue through the pressure tongue drive cylinder, and the pressure tongue drives the elastic base plate, so that the steel bar falls by colliding between the elastic base plate and the elastic baffle. The elastic baffle and the elastic base plate can effectively absorb the kinetic energy of the steel bar when it falls, and can also adjust the falling posture of the steel bar, so that the impact force is small when the steel bar falls on the mandrel and the pressure arm, and the material falling is stable and reliable.

[0029] A material guiding device is installed at the lower center of the five bending devices. The material guiding device includes a guide rail 16, the direction of which is consistent with the movement direction of the bending cylinder. A material guiding plate 17 is slidably installed on the guide rail. In this embodiment, the material guiding plate is fixedly connected to the slide plate 18, and the slide plate 18 is slidably arranged on the guide rail. The material guiding plate has a forward bending part 26 on one side and a backward bending part 27 on the other side. One end of the material guiding cylinder 19 is hinged to the frame, and the other end is hinged to the material guiding plate.

[0030] A fixing plate 15 is fixedly connected to the frame, and a V-shaped pressure arm 14 is installed on the fixing plate. The rear end of the pressure arm is hinged to the cylinder rod of the clamping cylinder 20, and the cylinder body of the clamping cylinder is hinged to the frame 1. The middle of the pressure arm is rotatably connected to the frame. A material detection proximity switch is installed on the fixing plate. The material detection proximity switch can sense whether the material has fallen into place.

[0031] The working process of this bending machine is as follows:

[0032] 1. In the waiting state, the curved arms of all five sets of aircraft heads are in the 12 o'clock position. Figure 4 Both the mandrel and the guide plate are in the extended position.

[0033] 2. The straight strip of billet (steel bar) is fed into the bending machine from the top. Under the inertia of falling on the inclined plane, the action of the elastic bottom plate and the elastic baffle, it falls into the annular groove of the bending station between the bending roller and the mandrel with a small impact force.

[0034] 3. Machine heads No. 1 and No. 5 operate simultaneously (the bending arms rotate clockwise and counterclockwise respectively) to bend the billet. Figure 7 (One bending). During the bending process, the two heads can move left and right along the slide rail via the slider, which reduces the relative sliding between the heads and the blank, and avoids excessive squeezing and friction from tearing the plastic sleeve; the spring ensures its return to its original position;

[0035] 4. The bending arms of machine heads No. 1 and No. 5 are reset to the 12 o'clock position, and the spindle is retracted;

[0036] 5. The No. 2 and No. 4 machine heads operate simultaneously (the bending arms rotate clockwise and counterclockwise respectively), further bending the billet. Figure 7 (Secondary bending). During the bending process, the blank begins to touch the guide plate. The two ends of the guide plate have forward bending parts and backward bending parts, respectively. Under the guidance of the bending parts at both ends of the guide plate, the blank undergoes a certain deformation in the front and back directions. One end is bent inside the guide plate and the other end is bent outside the guide plate, which can avoid interference during subsequent bending.

[0037] 6. The No. 2 machine head arm returns to the 12 o'clock position, and the spindle retracts;

[0038] 7. The No. 3 machine head moves (the bending arm rotates counterclockwise) to continue bending the billet. Figure 7 (Third bending). At this point, the blank becomes the finished product shape;

[0039] 8. The guide plate descends, and the bending arms of machine heads No. 3 and No. 4 return to the 12 o'clock position. The bending operation is completed, and the finished product is removed.

[0040] 9. All components are reset to the waiting state, waiting for the next cycle.

[0041] After a detailed description of the embodiments of the present invention, those skilled in the art will clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent applications. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.

Claims

1. An insulated steel bar bending machine, comprising a frame, characterized in that: Five bending devices are installed on the upper left and right sides of the frame, from left to right: bending device 1, bending device 2, bending device 3, bending device 4, and bending device 5. Each bending device includes a bearing housing, in which a gear is rotatably mounted. The gear has an axial central hole, and one side of the bearing housing has a window through which a rack meshes with the gear. The rack is fixedly connected to the actuating end of the bending cylinder. A mandrel slides through the central hole of the gear and is fixedly connected to the actuating end of the mandrel cylinder. The mandrel cylinder, bending cylinder, and bearing housing are all connected... A fixed connection is established, with a bent arm fixedly connected to the gear. A bending roller is rotatably mounted on the bent arm, offset from the center of the gear. Bending devices No. 1 and No. 5 are mounted on a slide rail that slides left and right via a slider. The slide rail is fixedly connected to the frame. A spring connects the slider and the frame, with one end of the spring connected to the frame and the other end connected to the slider. During bending, bending devices No. 1 and No. 5 can move left and right along the slide rail via the slider, and the spring ensures their return to their original position. Bending devices No. 2, No. 3, and No. 4 are all fixedly connected to the frame or the slide rail. A positioning baffle is installed on one side of the five bending devices, and a positioning cylinder is installed on the other side. A push plate is fixedly connected to the cylinder rod of the positioning cylinder. The outer baffle, the positioning cylinder and the bending arm are corresponding to each other on the left and right. The bending device is inclined backward from bottom to top. A material dropping base plate is fixedly connected to the upper frame of the bending device. A material dropping guide plate is fixedly installed in front of the material dropping base plate, and the lower end of the material dropping guide plate points towards the mandrel. The material dropping base plate includes an upper inclined surface that is inclined forward from top to bottom. Multiple elastic base plates are fixedly connected to the lower end of the inclined surface. A pressure tongue is hinged to the frame behind the elastic base plate. The middle part of the pressure tongue is hinged to the frame, and the rear end of the pressure tongue is hinged to the cylinder rod of the pressure tongue driving cylinder. The cylinder body of the pressure tongue driving cylinder is hinged to the frame. A material sensing switch is installed on the inclined surface. The material dropping guide plate consists of multiple elastic baffles corresponding to the elastic base plate located in front of the elastic base plate. The lower end of the elastic baffle has a backward bending part. A material guiding device is installed at the bottom center of the five bending devices. The material guiding device includes a guide rail, the direction of which is consistent with the movement direction of the bending cylinder. A material guiding plate is slidably installed on the guide rail. One side of the material guiding plate has a forward bending part and the other side has a backward bending part. One end of the material guiding cylinder is hinged to the frame and the other end is hinged to the material guiding plate.

2. The insulated steel bar bending machine according to claim 1, characterized in that: Limiting arms are fixedly connected to the slider, and limiting baffles are fixedly installed on the frame. Each limiting arm is located between two limiting baffles.

3. The insulated steel bar bending machine according to claim 1, characterized in that: A fixed plate is fixedly connected to the frame, and a V-shaped clamping arm is installed on the fixed plate. The lower end face of the clamping arm is located below the fixed plate. The rear end of the clamping arm is hinged to the cylinder rod of the clamping cylinder. The cylinder body of the clamping cylinder is hinged to the frame, and the middle of the clamping arm is rotatably connected to the frame.

4. The insulated steel bar bending machine according to claim 3, characterized in that: A material detection proximity switch is installed on the fixed plate.

5. An insulated steel bar bending machine according to claim 1, characterized in that: The mandrel has an annular groove, and the bending roller also has an annular groove.

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