Guardrail automatic assembling production line

Abstract

The automatic guardrail assembling production line comprises a roller conveying line, the roller conveying line is sleeved with an inserting mechanism, an adjusting mechanism and a shaping mechanism, the inserting mechanism comprises an inserting box, a gear box capable of ascending and descending is installed in an inner cavity of the inserting box, and a plurality of output shafts rotating synchronously are arranged at the bottom of the gear box; the output shafts are respectively connected with a drill bit; a plurality of supporting arms are arranged on the rear wall of the plug box in a penetrating mode, and semicircular grooves used for placing the vertical rods are formed in the upper portions of the supporting arms respectively. The adjusting mechanism comprises an adjusting box, a clamping lead screw and an adjusting lead screw are rotationally installed in the adjusting box, the clamping lead screw is located below the roller conveying line, and the adjusting lead screw is located above the roller conveying line. The problem that in the punching, splicing and welding procedures, workpieces need to be frequently transferred, and consequently the continuity of the production process is poor can be solved; the problem that the hole position is prone to deviation is solved, automatic inserting and splicing of the transverse rods and the vertical rods of the guardrail are achieved, and double-face automatic welding of the guardrail structure is achieved.

Description

Technical Field

[0001] The invention relates to an automatic guardrail assembly production line and belongs to the technical field of guardrail production. Background Art

[0002] Guardrails can be seen everywhere in our lives. Guardrails are mainly used to protect and safeguard equipment and facilities in factories, workshops, warehouses, parking lots, commercial areas, public places and other occasions.

[0003] Guardrail production is a comprehensive production process involving multiple processes and equipment, including design, mold opening, material cutting, punching, assembly, welding, surface treatment and finished product packaging. The punching process is to use punching equipment to punch out the required holes one by one on the cut materials for subsequent assembly and connection; the assembly process is to manually assemble the punched materials according to the design drawings to form the preliminary structure of the guardrail. The welding process is to use welding equipment to weld the assembled guardrail structure to ensure a firm connection between the components.

[0004] The following technical problems are common in the guardrail production process in the prior art:

[0005] 1. Punching, assembly and welding processes need to be performed separately in three stations. Each station involves the loading and unloading process of workpieces. Workpieces need to be frequently transferred, resulting in poor continuity of the production process.

[0006] 2. Punch the required holes one by one on the material. Since the guardrail is made of multiple horizontal bars and vertical bars, once the position of a hole deviates, it will make assembly difficult. Rework often occurs due to hole deviation. The assembly can only be done manually to eliminate the error, which seriously affects the assembly efficiency.

[0007] 3. The assembly process is done manually, and the horizontal bars and vertical bars are spliced ​​one by one. The assembly efficiency is low, and the assembly quality is manually controlled during the assembly process. The connection positions of the horizontal bars and vertical bars of different guardrails after assembly are very different, which makes the final products different;

[0008] 4. The guardrail structure needs to be turned over for welding in order to achieve comprehensive welding of the connection position between the horizontal bar and the vertical bar. Due to the influence of the turning action, it is not convenient to use robot automatic welding. At present, it mainly relies on manual welding. The welding quality is affected by the skill level of the welder, and the two sides of the guardrail structure need to be welded in turn, which is inefficient.

[0009] In summary, the existing technology obviously has inconveniences and defects in actual use, so it is necessary to propose a guardrail automatic assembly production line to solve the bottleneck in the existing technology. Summary of the invention

[0010] In view of the deficiencies in the background technology, the present invention provides an automatic guardrail assembly production line, which can solve the problem that workpieces need to be frequently transferred during the punching, assembly and welding processes, resulting in poor continuity in the production process; solve the problem that hole positions are prone to deviations, which brings difficulties to assembly; can realize automatic interlacing and splicing of guardrail cross bars and guardrail vertical bars to ensure constant assembly quality; and can also realize automatic double-sided welding of guardrail structures to significantly improve welding efficiency.

[0011] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0012] A guardrail automatic assembly production line comprises a roller conveyor line, on which a plug-in mechanism, an adjustment mechanism and a shaping mechanism are sequentially installed in a horizontal direction;

[0013] The plug-in mechanism includes a plug-in box, and the plug-in box is respectively fixed with a downwardly arranged longitudinal telescopic cylinder A above both ends along the conveying direction of the crossbar, and a rotating cylinder with a rotation angle of 90° is fixedly installed on the head of the longitudinal telescopic cylinder A. The rotating cylinders at the heads of the two longitudinal telescopic cylinders A are symmetrically arranged facing each other, and pneumatic clamps are installed on the rotating cylinders;

[0014] A gear box that can be raised and lowered is installed in the inner cavity of the plug-in box, and a plurality of synchronously rotating output shafts are arranged at the bottom of the gear box, and drill bits arranged in the vertical direction are respectively connected to the output shafts;

[0015] The rear wall of the plug-in box is provided with a plurality of brackets evenly distributed in the transverse direction, and semicircular grooves for placing the vertical poles are respectively provided above the brackets, and the semicircular grooves are arranged through the length direction of the brackets, and the plurality of brackets are combined into a whole by connecting arms;

[0016] The adjustment mechanism comprises an adjustment box, in which a clamping screw and an adjusting screw are rotatably installed, and the length direction of the clamping screw and the adjusting screw are arranged perpendicular to the conveying direction of the roller conveyor line, the clamping screw is located below the roller conveyor line, and the adjusting screw is located above the roller conveyor line;

[0017] A nut block is threadedly connected to the adjusting screw, and a longitudinal telescopic cylinder C and an electromagnet are installed on the bottom of the nut block in sequence. The electromagnet is fixedly installed on the head of the longitudinal telescopic cylinder C.

[0018] Furthermore, the roller conveyor line delivers a plurality of cross bars arranged in groups along the longitudinal direction into the plug-in mechanism. The plurality of cross bars are constrained by at least two U-shaped fasteners before being conveyed, and the U-shaped fasteners fasten the sides of the plurality of cross bars.

[0019] Furthermore, the gear box is located above the conveying direction of the cross bar, and a drilling motor is installed on the top of the gear box, and the drilling motor inputs power into the gear box.

[0020] Furthermore, a downwardly arranged longitudinal telescopic cylinder B is fixedly installed directly above the plug-in box, and the head of the longitudinal telescopic cylinder B is extended into the plug-in box and fixedly connected to the top of the gear box, and the longitudinal telescopic cylinder B provides power for the lifting and lowering of the gear box; guide rods are respectively provided on both sides of the longitudinal telescopic cylinder B, and the guide rods are arranged to penetrate the top wall of the gear box in the longitudinal direction, and a linear bearing is installed at the penetration point, and the bottom end of the guide rod is fixedly connected to the top of the gear box.

[0021] Furthermore, a sliding hole for the support arm to slide is provided on the rear wall of the plug-in box; and a gate plate is connected to the end of the support arm.

[0022] Furthermore, the connecting arm is located in the inner cavity of the plug-in box, the length direction of the connecting arm is the same as the conveying direction of the cross bar, the two ends of the connecting arm along the length direction are fixedly connected to the sliders, the sliders are slidably connected to the linear slide rails on the inner wall of the plug-in box, and the linear slide rails are arranged along the horizontal direction.

[0023] Furthermore, two transverse telescopic cylinders arranged side by side are fixedly installed on the rear wall of the plug-in box, and the heads of the transverse telescopic cylinders are extended into the inner cavity of the plug-in box and fixedly connected to the connecting arms; the transverse telescopic cylinders drive the connecting arms and multiple supporting arms to move synchronously, thereby allowing multiple vertical poles to be simultaneously inserted into the mounting holes of the grouped cross bars; a slag bucket is provided at the bottom of the plug-in box.

[0024] Furthermore, the clamping screw is a positive and negative thread screw, and two symmetrically arranged clamping plates are threadedly connected to the clamping screw, and one end of the clamping screw is connected to the clamping motor.

[0025] Furthermore, one end of the adjusting screw is connected to the adjusting motor, and the adjusting motor drives the adjusting screw to rotate, so that the nut block, the longitudinal telescopic cylinder C, the electromagnet and the adsorbed cross bar move laterally.

[0026] Furthermore, the molding mechanism includes a molding box, an upper welding robot arm is installed on the top of the inner cavity of the molding box, and a lower welding robot arm is installed on the bottom of the inner cavity of the molding box. The upper welding robot arm and the lower welding robot arm are distributed on the upper and lower sides of the roller conveyor line.

[0027] After adopting the above technical solution, the present invention has the following advantages compared with the prior art:

[0028] The present invention provides a plug-in mechanism, an adjustment mechanism and a shaping mechanism which are sequentially installed in a horizontal direction on a roller conveyor line. The plug-in mechanism inserts the vertical rod into the interior of the horizontal rod. The adjustment mechanism adjusts the connection position between the vertical rod and the horizontal rod. The shaping mechanism welds the vertical rod and the horizontal rod after the position adjustment. This solves the problem in the prior art that workpieces need to be frequently transferred during punching, assembly and welding processes, resulting in poor continuity of the production process.

[0029] In the present invention, the drilling motor inputs power into the gear box, and the gear box descends steadily under the action of the longitudinal telescopic cylinder B. During the descent, multiple drill bits rotate synchronously, and mounting holes for the vertical poles are processed on the cross bars arranged in groups. The hole positions on different cross bars correspond to each other one by one, and the hole positions are accurate, which is convenient for subsequent rapid assembly.

[0030] The transverse telescopic cylinder in the present invention can drive the connecting arm and the multiple supporting arms to move synchronously, thereby allowing the multiple vertical poles pre-placed in the supporting arm to be simultaneously inserted into the mounting holes of the horizontal poles arranged in groups; in addition, the electromagnetic horizontal pole can be moved horizontally to adjust the connection positions between different horizontal poles and vertical poles, thereby ensuring the connection positions between the horizontal poles and the vertical poles are accurate and the assembly quality is constant;

[0031] The present invention arranges welding mechanical arms on the upper and lower sides of the roller conveyor line respectively, so that the guardrail structure can be welded on both the front and back sides during the lateral step-by-step conveying process, and double-sided automatic welding is achieved, which significantly improves the welding efficiency.

[0032] The present invention is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of each step in the assembly process of the guardrail;

[0034] Figure 2 It is a schematic diagram of the structure of the present invention;

[0035] Figure 3 is a schematic cross-sectional view of the plug-in mechanism along the longitudinal direction;

[0036] Figure 4 is a cross-sectional schematic diagram of the plug-in mechanism along the transverse direction;

[0037] Figure 5 It is a structural diagram of the adjustment mechanism;

[0038] Figure 6 It is a structural diagram of the stereotyped mechanism;

[0039] Figure 7 It is a schematic diagram of the assembly of the U-shaped fastener and the cross bar.

[0040] In the figure, 1-crossbar; 2-vertical bar; 3-U-shaped fastener; 4-roller conveyor line; 5-plug-in mechanism, 51-plug-in box, 52-longitudinal telescopic cylinder A, 53-rotating cylinder, 54-pneumatic clamp, 55-gear box, 56-longitudinal telescopic cylinder B, 57-guide rod, 58-drilling motor, 59-drill bit, 510-support arm, 511-semicircular groove, 512-connecting arm, 513-slider, 514-linear slide rail , 515-transverse telescopic cylinder, 516-gate, 517-slide hole, 518-slag bucket; 6-adjustment mechanism, 61-adjustment box, 62-clamping screw, 63-adjustment screw, 64-clamping motor, 65-clamping plate, 66-nut block, 67-adjustment motor, 68-longitudinal telescopic cylinder C, 69-electromagnet; 7-molding mechanism, 71-molding box, 72-upper welding robot arm, 73-lower welding robot arm. DETAILED DESCRIPTION

[0041] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0042] like Figure 1-Figure 7 As shown together, the present invention provides an automatic assembly production line for a guardrail, including a roller conveyor line 4, on which a plug-in mechanism 5, an adjustment mechanism 6 and a shaping mechanism 7 are sequentially installed in a horizontal direction, the plug-in mechanism 5 is used to insert the vertical pole 2 into the interior of the cross bar 1, the adjustment mechanism 6 is used to adjust the connection position between the vertical pole 2 and the cross bar 1, and the shaping mechanism 7 is used to weld the vertical pole 2 and the cross bar 1 after the position is adjusted.

[0043] The roller conveyor line 4 is used to deliver multiple cross bars 1 arranged in groups along the longitudinal direction to the plug-in mechanism 5. The multiple cross bars 1 are constrained by at least two U-shaped fasteners 3 before transportation. The U-shaped fasteners 3 fasten the sides of the multiple cross bars 1 to prevent the grouped cross bars 1 from loosening during transportation.

[0044] The plug-in mechanism 5 includes a plug-in box 51, and the plug-in box 51 is fixedly connected with downwardly arranged longitudinal telescopic cylinders A52 on the upper sides of both ends along the conveying direction of the cross bar 1. The head of the longitudinal telescopic cylinder A52 extends into the plug-in box 51, and a rotating cylinder 53 with a rotation angle of 90° is fixedly installed on the head of the longitudinal telescopic cylinder A52. The rotating cylinders 53 at the heads of the two longitudinal telescopic cylinders A52 are symmetrically arranged facing each other.

[0045] A pneumatic clamp 54 is installed on the rotating cylinder 53. The pneumatic clamp 54 is used to position and clamp the end of the cross bar 1. The rotating cylinder 53 can drive the pneumatic clamp 54 and the cross bar 1 arranged in a group to rotate 90 degrees.

[0046] A liftable gear box 55 is installed in the inner cavity of the plug-in box 51. The gear box 55 is located above the conveying direction of the cross bar 1. A drilling motor 58 is installed on the top of the gear box 55. The drilling motor 58 inputs power into the gear box 55. A plurality of synchronously rotating output shafts are provided at the bottom of the gear box 55. The output shafts are respectively connected with drill bits 59 arranged in the vertical direction. The drill bits 59 are used to process mounting holes for the vertical poles 2 to pass through on the cross bars 1 arranged in groups.

[0047] A downwardly disposed longitudinal telescopic cylinder B56 is fixedly installed just above the plug-in box 51. The head of the longitudinal telescopic cylinder B56 is inserted into the plug-in box 51 and fixedly connected to the top of the gear box 55. The longitudinal telescopic cylinder B56 provides power for the lifting and lowering of the gear box 55. Guide rods 57 are respectively provided on both sides of the longitudinal telescopic cylinder B56. The guide rods 57 are arranged to penetrate the top wall of the gear box 55 in the longitudinal direction. A linear bearing is installed at the penetration point. The bottom end of the guide rod 57 is fixedly connected to the top of the gear box 55. The guide rod 57 slides along the linear bearing to ensure the smooth lifting and lowering process of the gear box 55 and the drill bit 59.

[0048] The rear wall of the plug box 51 is provided with a plurality of brackets 510 evenly distributed in the transverse direction, and the rear wall of the plug box 51 is provided with sliding holes 517 for sliding the brackets 510. Semicircular grooves 511 for placing the uprights 2 are respectively provided above the brackets 510, and the semicircular grooves 511 are arranged along the length direction of the brackets 510.

[0049] The end of the support arm 510 is connected with a gate plate 516 , which can be opened or closed. The vertical rod 2 passes through the gate plate 516 into the semicircular groove 511 of the support arm 510 .

[0050] The multiple supporting arms 510 are combined into a whole through the connecting arm 512, and the connecting arm 512 is located in the inner cavity of the plug-in box 51. The length direction of the connecting arm 512 is the same as the conveying direction of the cross bar 1. The two ends of the connecting arm 512 along the length direction are fixedly connected to the slider 513 respectively, and the slider 513 is slidably connected to the linear slide rail 514 on the inner wall of the plug-in box 51 respectively, and the linear slide rail 514 is arranged along the horizontal direction.

[0051] Two transverse telescopic cylinders 515 arranged side by side are fixedly mounted on the rear wall of the plug-in box 51. The heads of the transverse telescopic cylinders 515 extend into the inner cavity of the plug-in box 51 and are fixedly connected to the connecting arms 512. The transverse telescopic cylinders 515 drive the connecting arms 512 and the multiple supporting arms 510 to move synchronously, thereby allowing the multiple vertical poles 2 to be simultaneously inserted into the mounting holes of the horizontal poles 1 arranged in groups.

[0052] A slag bucket 518 is provided at the bottom of the plug-in box 51, and the slag bucket 518 is used to collect debris generated during the drilling process.

[0053] The adjustment mechanism 6 includes an adjustment box 61, in which a clamping screw 62 and an adjusting screw 63 are rotatably installed. The length directions of the clamping screw 62 and the adjusting screw 63 are perpendicular to the conveying direction of the roller conveyor line 4. The clamping screw 62 is located below the roller conveyor line 4, and the adjusting screw 63 is located above the roller conveyor line 4.

[0054] The clamping screw 62 is a positive and negative thread screw, and two symmetrically arranged clamping plates 65 are threadedly connected to the clamping screw 62. One end of the clamping screw 62 is connected to the clamping motor 64. The clamping motor 64 drives the clamping screw 62 to rotate, so that the two clamping plates 65 can move towards each other, thereby clamping and fixing the ends of the opposing rods 2.

[0055] The adjusting screw 63 is threadedly connected with a nut block 66, and the bottom of the nut block 66 is sequentially installed with a longitudinal telescopic cylinder C68 and an electromagnet 69, and the electromagnet 69 is fixedly installed on the head of the longitudinal telescopic cylinder C68. The electromagnet 69 is energized to generate a strong magnet to absorb the crossbar 1, so as to facilitate the next step of moving the crossbar 1.

[0056] One end of the adjusting screw 63 is connected to the adjusting motor 67. The adjusting motor 67 drives the adjusting screw 63 to rotate, so that the nut block 66, the longitudinal telescopic cylinder C68, the electromagnet 69 and the adsorbed cross bar 1 move laterally, thereby adjusting the connection position between different cross bars 1 and the vertical bars 2.

[0057] The shaping mechanism 7 includes a shaping box 71, an upper welding mechanical arm 72 is installed at the top of the inner cavity of the shaping box 71, and a lower welding mechanical arm 73 is installed at the bottom of the inner cavity of the shaping box 71. The upper welding mechanical arm 72 and the lower welding mechanical arm 73 are distributed on the upper and lower sides of the roller conveyor line 4. The upper welding mechanical arm 72 is used to weld the upper part of the connection position of the cross bar 1 and the vertical bar 2, and the lower welding mechanical arm 73 is used to weld the lower part of the connection position of the cross bar 1 and the vertical bar 2.

[0058] The specific working principle of the present invention is:

[0059] The side parts of the plurality of cross bars 1 are buckled together by means of the U-shaped buckles 3, and the roller conveyor line 4 delivers the buckled group of cross bars 1 to the plug-in mechanism 5;

[0060] The pneumatic clamp 54 in the plug-in box 51 positions and clamps the end of the crossbar 1;

[0061] The drilling motor 58 inputs power into the gear box 55, and the gear box 55 is steadily lowered under the action of the longitudinal telescopic cylinder B56. During the lowering process, multiple drill bits 59 rotate synchronously to process the mounting holes for the vertical poles 2 to penetrate on the horizontal poles 1 arranged in groups;

[0062] The rotating cylinder 53 drives the pneumatic clamp 54 and the drilled crossbar 1 to rotate 90°, so that the axis of the mounting hole is arranged in the horizontal direction. During the rotation of the crossbar 1, the U-shaped fastener 3 will fall off into the slag bucket 518 by itself.

[0063] The transverse telescopic cylinder 515 drives the connecting arm 512 and the multiple supporting arms 510 to move synchronously, thereby allowing the multiple vertical poles 2 pre-placed in the supporting arms 510 to simultaneously pass through the mounting holes of the horizontal poles 1 arranged in groups;

[0064] The roller conveyor line 4 conveys the pre-assembled vertical rod 2 and horizontal rod 1 to the adjustment mechanism 6, and the clamping motor 64 drives the clamping screw 62 to rotate, so that the two clamping plates 65 move toward each other, thereby clamping and fixing the ends of the vertical rod 2;

[0065] The adjustment motor 67 drives the adjustment screw 63 to rotate, so that the screw nut 66, the longitudinal telescopic cylinder C68, the electromagnet 69 and the adsorbed crossbar 1 move horizontally, thereby adjusting the connection position between different crossbars 1 and the vertical poles 2;

[0066] The roller conveyor line 4 conveys the adjusted vertical pole 2 and horizontal pole 1 to the shaping mechanism 7, and the upper welding robot arm 72 and the lower welding robot arm 73 cooperate to weld and fix the connecting position of the horizontal pole 1 and the vertical pole 2 into shape;

[0067] The formed guardrail is then transported to the next station.

[0068] The above is an example of the best implementation of the present invention, and the parts not described in detail are common knowledge of ordinary technicians in the field. The protection scope of the present invention shall be based on the content of the claims, and any equivalent transformation based on the technical enlightenment of the present invention is also within the protection scope of the present invention.

Claims

1. A guardrail automatic assembly production line, characterized by: The roller conveyor line (4) is provided with a plug-in mechanism (5), an adjustment mechanism (6) and a shaping mechanism (7) which are sequentially installed in a horizontal direction. The plug-in mechanism (5) comprises a plug-in box (51), and the plug-in box (51) is respectively fixedly connected with a downwardly arranged longitudinal telescopic cylinder A (52) at the upper ends of the two ends along the conveying direction of the cross bar (1), and a rotating cylinder (53) with a rotation angle of 90° is fixedly installed on the head of the longitudinal telescopic cylinder A (52), and the rotating cylinders (53) at the heads of the two longitudinal telescopic cylinders A (52) are symmetrically arranged facing each other, and a pneumatic clamp (54) is installed on the rotating cylinder (53); A gear box (55) that can be lifted and lowered is installed in the inner cavity of the plug-in box (51), and a plurality of synchronously rotating output shafts are arranged at the bottom of the gear box (55), and drill bits (59) arranged in the vertical direction are respectively connected to the output shafts; a plurality of supporting arms (510) uniformly distributed in the horizontal direction are penetrated on the rear wall of the plug-in box (51), and semicircular grooves (511) for placing the vertical poles (2) are respectively arranged above the supporting arms (510), and the semicircular grooves (511) are arranged to penetrate along the length direction of the supporting arms (510), and the plurality of supporting arms (510) are combined into a whole through a connecting arm (512); The adjustment mechanism (6) comprises an adjustment box (61), in which a clamping screw (62) and an adjusting screw (63) are rotatably mounted, the length direction of the clamping screw (62) and the adjusting screw (63) being arranged perpendicular to the conveying direction of the roller conveyor line (4), the clamping screw (62) being located below the roller conveyor line (4), and the adjusting screw (63) being located above the roller conveyor line (4); A nut block (66) is threadedly connected to the adjusting screw rod (63), and a longitudinal telescopic cylinder C (68) and an electromagnet (69) are sequentially mounted on the bottom of the nut block (66), wherein the electromagnet (69) is fixedly mounted on the head of the longitudinal telescopic cylinder C (68).

2. The guardrail automatic assembly production line according to claim 1, characterized in that: The roller conveyor line (4) conveys a plurality of cross bars (1) arranged in groups along the longitudinal direction into a plug-in mechanism (5). The plurality of cross bars (1) are restrained by at least two U-shaped fasteners (3) before conveyance, and the U-shaped fasteners (3) fasten the side portions of the plurality of cross bars (1).

3. The guardrail automatic assembly production line according to claim 1, characterized in that: The gear box (55) is located above the cross bar (1) in the conveying direction. A drilling motor (58) is installed on the top of the gear box (55). The drilling motor (58) inputs power into the gear box (55).

4. The guardrail automatic assembly production line according to claim 1, characterized in that: A downwardly disposed longitudinal telescopic cylinder B (56) is fixedly installed just above the plug-in box (51). The head of the longitudinal telescopic cylinder B (56) extends into the plug-in box (51) and is fixedly connected to the top of the gear box (55). The longitudinal telescopic cylinder B (56) provides power for the lifting and lowering of the gear box (55). Guide rods (57) are respectively provided on both sides of the longitudinal telescopic cylinder B (56). The guide rods (57) are arranged to penetrate the top wall of the gear box (55) in the longitudinal direction. A linear bearing is installed at the penetration point. The bottom end of the guide rod (57) is fixedly connected to the top of the gear box (55).

5. The guardrail automatic assembly production line according to claim 1, characterized in that: A sliding hole (517) for the supporting arm (510) to slide is provided on the rear wall of the plug-in box (51); and a gate plate (516) is connected to the end of the supporting arm (510).

6. The guardrail automatic assembly production line according to claim 1, characterized in that: The connecting arm (512) is located in the inner cavity of the plug-in box (51), the length direction of the connecting arm (512) is the same as the conveying direction of the cross bar (1), the two ends of the connecting arm (512) along the length direction are respectively fixedly connected to the sliders (513), the sliders (513) are respectively slidably connected to the linear slide rails (514) on the inner wall of the plug-in box (51), and the linear slide rails (514) are arranged along the horizontal direction.

7. The guardrail automatic assembly production line according to claim 6, characterized in that: Two transverse telescopic cylinders (515) arranged side by side are fixedly mounted on the rear wall of the plug-in box (51); the heads of the transverse telescopic cylinders (515) extend into the inner cavity of the plug-in box (51) and are fixedly connected to the connecting arms (512); the transverse telescopic cylinders (515) drive the connecting arms (512) and the plurality of supporting arms (510) to move synchronously, thereby allowing the plurality of vertical poles (2) to simultaneously pass through the mounting holes of the grouped horizontal poles (1); and a slag bucket (518) is provided at the bottom of the plug-in box (51).

8. The guardrail automatic assembly production line according to claim 1, characterized in that: The clamping screw (62) is a positive and negative thread screw, and two symmetrically arranged clamping plates (65) are threadedly connected to the clamping screw (62). One end of the clamping screw (62) is connected to a clamping motor (64).

9. The guardrail automatic assembly production line according to claim 8, characterized in that: One end of the adjusting screw (63) is connected to the adjusting motor (67), and the adjusting motor (67) drives the adjusting screw (63) to rotate, thereby causing the nut block (66), the longitudinal telescopic cylinder C (68), the electromagnet (69) and the adsorbed crossbar (1) to move laterally.

10. The guardrail automatic assembly production line according to claim 1, characterized in that: The shaping mechanism (7) comprises a shaping box (71), an upper welding mechanical arm (72) is installed at the top of the inner cavity of the shaping box (71), and a lower welding mechanical arm (73) is installed at the bottom of the inner cavity of the shaping box (71), and the upper welding mechanical arm (72) and the lower welding mechanical arm (73) are distributed on the upper and lower sides of the roller conveyor line (4).

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