Double-line type XinJexi guardrail automatic welding line and automatic welding process thereof

Abstract

The invention discloses a double-line type automatic welding line for New Jersey guardrails and an automatic welding process of the double-line type automatic welding line. The automatic welding line comprises a reinforcement cage fixing support, a walking track and a welding robot. A walking track and a welding robot are arranged on the two sides of the reinforcement cage fixing support correspondingly, and the welding robot is provided with a welding head assembly and is movably arranged on the walking track; the reinforcement cage fixing support is provided with a positioning area for positioning and placing a New Jersey guardrail reinforcement cage, a first positioning structure and a second positioning structure are arranged on the positioning area, the first positioning structure is used for positioning a plurality of stirrups of the New Jersey guardrail reinforcement cage, and the second positioning structure is used for positioning a plurality of transverse ribs. The welding robot double-line advancing mode is adopted, welding spots on the two sides of the XinJexi guardrail reinforcement cage are automatically welded, and the welding efficiency is improved; the high-precision customized clamping groove batten and the pneumatic jaw pliers are used for positioning the stirrup and the horizontal rib through laser cutting, fixing is conducted according to preset positions, the precision error is small, and the welding quality is uniform and high.

Description

Technical Field

[0001] The invention relates to the technical field of road and bridge engineering production equipment and process, in particular to a double-line New Jersey guardrail automatic welding line and an automatic welding process thereof. Background Art

[0002] New Jersey guardrail is a wall-type guardrail with a certain cross-sectional shape. It has many advantages in engineering applications and is widely used. It is a very common guardrail product in road and bridge projects. New Jersey guardrail is actually a reinforced concrete product. Due to its wide application in modern road and bridge projects, the improvement of the production equipment and production process of New Jersey guardrail products is conducive to reducing the project costs of related engineering construction companies and improving the overall competitiveness of related companies. Specifically, the production process of New Jersey guardrail mainly includes two parts: the binding and welding of the steel cage and the pouring of concrete. For the binding and welding of the steel cage of the New Jersey guardrail, since there are many points where the steel cage needs to be welded, if the positioning is inaccurate or the welding is not in place, it will affect the final product quality of the New Jersey guardrail product. Manual welding obviously has high work intensity, low efficiency and high cost. Therefore, in order to improve production efficiency and quality, it is obviously an inevitable choice to adopt the production method of automatic welding line. How to solve the positioning and welding problems in the binding and welding process of the steel cage is obviously the difficulty in realizing the New Jersey guardrail automatic welding line and its welding process. There is a lack of relevant mature technical solutions in the existing technology to achieve the above purpose. Summary of the invention

[0003] In view of the above problems, the present invention provides a double-line New Jersey guardrail automatic welding line. The technical solution of the present invention is:

[0004] A double-line New Jersey guardrail automatic welding line includes a steel cage fixing bracket, a walking track and a welding robot; the walking track and the welding robot are respectively arranged on both sides of the steel cage fixing bracket, and the welding robot has a welding head assembly and is movably arranged on the walking track; the steel cage fixing bracket has a positioning area for positioning the New Jersey guardrail steel cage, and the positioning area is provided with a first positioning structure and a second positioning structure, the first positioning structure is used to position a plurality of stirrups of the New Jersey guardrail steel cage, and the second positioning structure is used to position a plurality of transverse bars of the New Jersey guardrail steel cage.

[0005] As a further description of the present invention, the first positioning structure includes a plurality of dimension strips, and a plurality of stirrup positioning grooves are provided on the dimension strips at intervals.

[0006] Furthermore, the second positioning structure includes a plurality of finger cylinders with front end grippers, and the finger cylinders are arranged corresponding to a plurality of transverse bars of the New Jersey guardrail steel cage.

[0007] Furthermore, the steel cage fixing bracket includes a plurality of fixed plates and a plurality of movable plates, the movable plates are slidably mounted on the fixed plates, a movable plate driving mechanism is arranged between the fixed plates and the movable plates, and the movable plate driving mechanism is used to drive the opening and closing movement of the movable plates; the fixed plates and the movable plates are provided with corresponding profiling notches of the New Jersey guardrail steel cage, the opening of the profiling notch is upward, and the width of the opening end of the profiling notch is relatively large.

[0008] Furthermore, the movable plate driving mechanism comprises a movable plate opening and closing driving cylinder and a movable plate slide rail, wherein the movable plate opening and closing driving cylinder is mounted and fixed on the fixed plate to drive the movable plate to slide back and forth along the movable plate slide rail.

[0009] Furthermore, a plurality of longitudinal positioning plates are arranged at the lower part of the steel cage fixing bracket, a plurality of longitudinal embedding grooves are formed between the longitudinal positioning plates, and the fixing plates are installed in the longitudinal embedding grooves; transverse embedding grooves are opened at both ends of the upper part of the fixing plates, and transverse positioning plates are installed in the transverse embedding grooves.

[0010] Furthermore, a strip installation groove is provided on the fixing plate, and the size strip is installed in the strip installation groove through a strip adjustment mechanism.

[0011] Furthermore, the strip adjustment mechanism includes a top screw rod and a top screw seat, the top screw seat is fixed on the fixed plate, the top screw rod is installed on the top screw seat and one end of the top screw rod is connected to the size strip.

[0012] Furthermore, ventilation pipes are arranged on both sides of the steel cage fixing bracket, and the finger cylinder and the movable plate opening and closing driving cylinder are connected to the ventilation pipes.

[0013] On the other hand, the present invention also provides a double-wire New Jersey guardrail automatic welding process, comprising the following steps:

[0014] S1, processing steel bars into stirrups and transverse bars for New Jersey guardrail reinforcement cages;

[0015] S2, manually placing the stirrups and transverse reinforcements at corresponding positions on the positioning area of ​​the steel cage fixing bracket, positioning the stirrups by the first positioning structure, and positioning the transverse reinforcement by the second positioning structure.

[0016] S3, starting the equipment, and the relevant fastening components act to fasten the stirrups and transverse bars;

[0017] S4, welding starts, the welding robot moves step by step along the walking track from both sides of the steel cage fixing bracket, and automatically welds each welding point of the stirrups and transverse bars according to the control program until the welding of the entire New Jersey guardrail steel cage is completed

[0018] S5, after welding is completed, the relevant fastening components are moved to loosen the fastening of the stirrups and transverse bars, and the welded New Jersey guardrail steel cage is taken out as a whole.

[0019] Beneficial effects of the present invention:

[0020] 1. It can be operated by one person, and the welding robot can move in two lines to automatically weld the welding points on both sides of the New Jersey guardrail steel cage. The processing time of each New Jersey guardrail steel cage is 4-5 minutes, which can increase the work efficiency by 2 times compared with manual production, greatly improving the welding efficiency of the New Jersey guardrail steel cage;

[0021] 2. Use laser cutting of high-precision customized slot strips and pneumatic vise to position stirrups and horizontal ribs, fix them according to the preset position, and control the accuracy error within the millimeter level;

[0022] 3. Through pre-programming, the welding robot automatically adjusts the position of the mechanical arm, dwell time, current and other parameters to achieve orderly welding with uniform and high-quality welding quality;

[0023] 4. The automated welding production line reduces site space, effectively reducing the footprint of the steel bar binding area while ensuring New Jersey's production capacity, which is in line with the green and environmentally friendly construction concept. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram showing the structural arrangement of the automatic welding line of the double-line New Jersey guardrail of the present invention;

[0025] Figure 2 This is a diagram showing the overall structure of a steel cage fixing bracket according to an embodiment of the present invention;

[0026] Figure 3 The local structure of the steel cage fixing bracket of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 4 The local structure of the steel cage fixing bracket of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 5 This is a diagram showing the distribution of welding points of the New Jersey guardrail steel cage of the present invention;

[0029] Figure 6 The present invention is a flowchart of the steps of the automatic welding process method for the double-line New Jersey guardrail.

[0030] Figure numerals: steel cage fixing bracket 1, fixed plate 101, movable plate 102, walking track 2, welding robot 3, welding head assembly 301, stirrups 4, transverse reinforcement 5, size strips 6, stirrup positioning grooves 601, finger cylinders 7, grippers 701, movable plate opening and closing drive cylinders 8, movable plate slide rails 9, longitudinal positioning plates 10, transverse positioning plates 11, strip mounting grooves 12, top screw rods 13, top screw seats 14, ventilation ducts 15. DETAILED DESCRIPTION

[0031] Example:

[0032] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] As attached Figure 1-5 As shown, a double-line New Jersey guardrail automatic welding line of this embodiment includes a steel cage fixing bracket 1, a walking track 2 and a welding robot 3; the walking track 2 and the welding robot 3 are respectively arranged on both sides of the steel cage fixing bracket 1, and the welding robot 3 has a welding head assembly 301 and is movably arranged on the walking track 2; the steel cage fixing bracket 1 has a positioning area for positioning the New Jersey guardrail steel cage, and the positioning area is provided with a first positioning structure and a second positioning structure, the first positioning structure is used to position a plurality of stirrups 4 of the New Jersey guardrail steel cage, and the second positioning structure is used to position a plurality of transverse bars 5 of the New Jersey guardrail steel cage.

[0035] The double-line New Jersey guardrail automatic welding line of the present invention adopts a double-line travel mode of the welding robot 3, which can automatically weld the welding points on both sides of the New Jersey guardrail steel cage respectively. The processing time of each New Jersey guardrail steel cage is 4-5 minutes, which can increase the work efficiency by 2 times compared with manual production, greatly improving the welding efficiency of the New Jersey guardrail steel cage; the stirrups 4 and the horizontal bars are positioned by the first positioning structure and the second positioning structure so that they can be fixed according to the preset position, and the welding processing accuracy error of the New Jersey guardrail steel cage can be controlled within the millimeter level; through pre-programming, the welding robot 3 automatically adjusts the robot arm position, dwell time, current and other parameters to achieve orderly welding with uniform and high-quality welding quality; the automated welding production line reduces the site space, effectively reduces the area occupied by the steel bar binding area while ensuring the New Jersey production capacity, and is in line with the green and environmentally friendly construction concept.

[0036] For details, please refer to the attached Figure 2-4 As shown, in this embodiment, the first positioning structure includes a plurality of sizing strips 6, on which a plurality of stirrup positioning grooves 601 are spaced apart. The stirrup positioning grooves 601 on the sizing strips 6 can be formed by laser cutting to improve the positioning accuracy of the stirrups 4 and achieve the control of the above-mentioned millimeter-level error accuracy. In this way, a plurality of stirrups 4 required for a New Jersey guardrail steel cage can be precisely spaced and assembled and fixed in the positioning area of ​​the steel cage fixing bracket 1 to achieve positioning coordination with the transverse reinforcement 5.

[0037] As mentioned above, the New Jersey guardrail steel cage also includes the positioning of the transverse reinforcement 5. For this purpose, in this embodiment, see the attached Figure 2-4 As shown, the second positioning structure includes a plurality of finger cylinders 7 with front-end grippers 701, and the finger cylinders 7 are arranged corresponding to a plurality of transverse reinforcements 5 of the New Jersey guardrail steel cage, that is, a group of finger cylinders 7 is arranged in the horizontal direction corresponding to each transverse reinforcement 5, and when the transverse reinforcement 5 is assembled, the finger cylinders 7 are in an open state, and the transverse reinforcement 5 can be placed therein; before starting welding and during automatic welding, the finger cylinders 7 are closed to fix each transverse reinforcement 5 in a predetermined horizontal position, that is, to maintain relative tightness and fixation with the stirrups 4 to ensure welding quality.

[0038] In this embodiment, the steel cage fixing bracket 1 includes a plurality of fixed plates 101 and a plurality of movable plates 102, wherein the movable plates 102 are slidably mounted on the fixed plates 101, and a movable plate driving mechanism is arranged between the fixed plates 101 and the movable plates 102, and the movable plate driving mechanism is used to drive the opening and closing movement of the movable plates 102; the fixed plates 101 and the movable plates 102 are both provided with corresponding profiling notches of the New Jersey guardrail steel cage, the opening of the profiling notches is upward, and the width of the opening end of the profiling notches is relatively large. In this way, during the assembly operation, the movable plate 102 can be opened, and the stirrups 4 and transverse bars 5 required for the New Jersey guardrail steel cage are all placed on the steel cage fixing bracket 1 and then closed and positioned to ensure the effective welding connection between the two; after the welding is completed, the movable plate 102 is opened again, and the welded New Jersey guardrail steel cage is taken out of the steel cage fixing bracket 1 as a whole by a lifting device, which is convenient for transportation operation and saves the loading and unloading time of the double-line New Jersey guardrail automatic welding line.

[0039] For details, see the attached Figure 4 As shown, the movable plate driving mechanism includes a movable plate opening and closing driving cylinder 8 and a movable plate slide rail 9. The movable plate opening and closing driving cylinder 8 is installed and fixed on the fixed plate 101, and is used to drive the movable plate 102 to slide back and forth along the movable plate slide rail 9. When the movable plate 102 needs to be opened, the movable plate 102 can be driven by the movable plate opening and closing driving cylinder 8 to move outward toward each other to perform a loading operation; when the movable plate 102 needs to be closed, the movable plate 102 can be driven by the movable plate opening and closing driving cylinder 8 to move inward toward each other to perform a unloading operation.

[0040] In this embodiment, a plurality of longitudinal positioning plates 10 are provided at the lower part of the steel cage fixing bracket 1, and a plurality of longitudinal grooves are formed between the longitudinal positioning plates 10, and the fixing plates 101 are installed in the longitudinal grooves; transverse grooves are provided at both ends of the upper part of the fixing plates 101, and transverse positioning plates 11 are installed in the transverse grooves. That is, the lower end of the fixing plate 101 of this embodiment is restricted and fixed by the longitudinal positioning plate 10, and the upper end of the fixing plate 101 is restricted and fixed by the transverse positioning plate 11, so that the plurality of fixing plates 101 included in the steel cage fixing bracket 1 are positioned with each other and form a whole. The structure of this embodiment is conducive to the rapid assembly and position adjustment of the fixing plate 101, thereby ensuring the restricted positioning accuracy of the stirrups 4 and the transverse bars 5, and ensuring the welding accuracy of the New Jersey guardrail steel cage.

[0041] In a preferred embodiment, the fixed plate 101 of this embodiment is provided with a strip installation groove 12, and the dimension strip 6 is installed in the strip installation groove 12 through a strip adjustment mechanism, so that the fixed position of the dimension strip 6 can be fine-tuned and kept fixed to ensure its positioning effect on the stirrup 4 and ensure product quality. Figure 3 As shown, the strip adjustment mechanism of this embodiment includes a top screw rod 13 and a top screw seat 14, the top screw seat 14 is fixed on the fixed plate 101, the top screw rod 13 is installed on the top screw seat 14 and one end is connected to the size strip 6, and the position of the size strip 6 connected thereto can be adjusted by adjusting the top screw rod 13 to achieve the above-mentioned adjustment effect.

[0042] In this embodiment, see the attached Figure 2 As shown, in this embodiment, ventilation ducts 15 are arranged on both sides of the steel cage fixing bracket 1, and the finger cylinder 7 and the movable plate opening and closing driving cylinder 8 are connected to the ventilation duct 15. Through the ventilation duct 15, on the one hand, the driving device including the finger cylinder 7 and the movable plate opening and closing driving cylinder 8 can be connected to the driving air source, and on the other hand, the pipelines related thereto can be effectively protected to prevent the welding robot 3 from being damaged by high-temperature sparks dropped during the automatic welding process, thereby ensuring the safe and effective operation of the double-line New Jersey guardrail automatic welding line.

[0043] Based on the above-mentioned double-line New Jersey guardrail automatic welding line structure design of the present invention, it is easy to understand, see the attached Figure 6 As shown, the automatic welding process of the double-line New Jersey guardrail of the present invention specifically includes the following steps:

[0044] S1, processing the steel bars into stirrups 4 and transverse bars 5 of the New Jersey guardrail steel cage;

[0045] S2, manually placing the stirrups 4 and the transverse reinforcement 5 at corresponding positions of the positioning area of ​​the steel cage fixing bracket 1, positioning the stirrups 4 by the first positioning structure, and positioning the transverse reinforcement 5 by the second positioning structure.

[0046] S3, starting the equipment, and the relevant fastening components act to fasten the stirrups 4 and the transverse reinforcement 5;

[0047] S4, welding starts, the welding robot 3 moves along the walking track 2 steps from both sides of the steel cage fixing bracket 1, and automatically welds each welding point of the stirrup 4 and the transverse reinforcement 5 according to the control program until the welding of the entire New Jersey guardrail steel cage is completed.

[0048] S5, after the welding is completed, the relevant fastening components are moved to loosen the fastening of the stirrups 4 and the transverse bars 5, and the welded New Jersey guardrail steel cage is taken out as a whole.

[0049] The above only describes the preferred embodiments of the present invention, but it cannot be understood as limiting the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to be changed. In short, all changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A double-line New Jersey guardrail automatic welding line, characterized by: It includes a steel cage fixing bracket, a walking track and a welding robot; the walking track and the welding robot are respectively arranged on both sides of the steel cage fixing bracket, and the welding robot has a welding head assembly and is movably arranged on the walking track; the steel cage fixing bracket has a positioning area for positioning the New Jersey guardrail steel cage, and the positioning area is provided with a first positioning structure and a second positioning structure, the first positioning structure is used to position a plurality of stirrups of the New Jersey guardrail steel cage, and the second positioning structure is used to position a plurality of transverse bars of the New Jersey guardrail steel cage.

2. The double-line New Jersey guardrail automatic welding line according to claim 1 is characterized in that: The first positioning structure includes a plurality of dimension strips, and a plurality of stirrup positioning grooves are provided on the dimension strips at intervals.

3. The double-line New Jersey guardrail automatic welding line according to claim 1 is characterized in that: The second positioning structure includes a plurality of finger cylinders with front end grippers, and the finger cylinders are arranged corresponding to a plurality of transverse bars of the New Jersey guardrail steel cage.

4. The double-line New Jersey guardrail automatic welding line according to claim 2 is characterized in that: The steel cage fixing bracket includes a plurality of fixed plates and a plurality of movable plates, the movable plates are slidably mounted on the fixed plates, a movable plate driving mechanism is arranged between the fixed plates and the movable plates, the movable plate driving mechanism is used to drive the opening and closing movement of the movable plates; the fixed plates and the movable plates are respectively provided with corresponding profiling notches of the New Jersey guardrail steel cage, the opening of the profiling notch is upward, and the width of the opening end of the profiling notch is relatively large.

5. The double-line New Jersey guardrail automatic welding line according to claim 4 is characterized in that: The movable plate driving mechanism comprises a movable plate opening and closing driving cylinder and a movable plate slide rail. The movable plate opening and closing driving cylinder is mounted and fixed on the fixed plate to drive the movable plate to slide back and forth along the movable plate slide rail.

6. The double-line New Jersey guardrail automatic welding line according to claim 4 is characterized in that: A plurality of longitudinal positioning plates are arranged at the lower part of the steel cage fixing bracket, a plurality of longitudinal embedding grooves are formed between the longitudinal positioning plates, and the fixing plates are installed in the longitudinal embedding grooves; transverse embedding grooves are opened at both ends of the upper part of the fixing plates, and transverse positioning plates are installed in the transverse embedding grooves.

7. The double-line New Jersey guardrail automatic welding line according to claim 4 is characterized in that: The fixing plate is provided with a strip installation groove, and the size strip is installed in the strip installation groove through a strip adjustment mechanism.

8. The double-line New Jersey guardrail automatic welding line according to claim 4 is characterized in that: The strip plate adjustment mechanism comprises a top screw rod and a top screw seat, wherein the top screw seat is fixed on the fixing plate, and the top screw rod is installed on the top screw seat and one end of the top screw rod is connected to the size strip plate.

9. The double-line New Jersey guardrail automatic welding line according to claim 1 is characterized in that: Ventilation pipes are arranged on both sides of the steel cage fixing bracket, and the finger cylinder and the movable plate opening and closing driving cylinder are connected to the ventilation pipes.

10. A two-wire New Jersey guardrail automatic welding process, characterized in that: The following steps are involved: S1, processing steel bars into stirrups and transverse bars for New Jersey guardrail reinforcement cages; S2, manually placing the stirrups and transverse reinforcements at corresponding positions on the positioning area of ​​the steel cage fixing bracket, positioning the stirrups by the first positioning structure, and positioning the transverse reinforcement by the second positioning structure. S3, starting the equipment, and the relevant fastening components act to fasten the stirrups and transverse bars; S4, welding starts, the welding robot moves step by step along the walking track from both sides of the steel cage fixing bracket, and automatically welds each welding point of the stirrups and transverse bars according to the control program until the welding of the entire New Jersey guardrail steel cage is completed S5, after welding is completed, the relevant fastening components are moved to loosen the fastening of the stirrups and transverse bars, and the welded New Jersey guardrail steel cage is taken out as a whole.

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