Fence welding tool

Abstract

The embodiment of the utility model relates to a fence welding tool which comprises a top rod, a left rod, a right rod, a middle transverse rod and a plurality of vertical rods. The fence welding tool comprises a first rotating table, a second rotating table, a rotating frame and a workbench. Wherein the workbench comprises a mounting plate arranged on the rotating frame, and the mounting plate is provided with a first positioning unit, a second positioning unit, a third positioning unit, a fourth positioning unit and a fourth positioning unit; the second positioning unit is used for placing the left rod and the right rod of the fence; the third positioning unit is used for placing a middle cross rod of the fence; the fourth positioning unit is used for placing a plurality of vertical rods of the fence; and the welding gun via hole corresponds to the welding position, so that the front and back sides of the welding position can be conveniently welded. The whole workpiece is fixed through the first positioning unit, the second positioning unit, the third positioning unit and the fourth positioning unit, and the welding efficiency is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of welding technology, and in particular to a fence welding tool. Background Art

[0002] A fence is a kind of railing that surrounds the surrounding area and has the functions of separation, blocking and shielding.

[0003] In the existing design, the fence is generally formed manually by welding multiple steel pipes together. For example, document CN113523697B discloses a welding fixture for making a grating-type guardrail, and the workpiece is placed on the fixture for manual welding. This welding method is not only complicated in operation and inefficient, but also has poor consistency in the fence formed by manual welding. Utility Model Content

[0004] An embodiment of the present application provides a fence welding tool, which aims to improve the welding efficiency of the fence.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the present application provides a fence welding tool, wherein the fence includes: a top rod, a left rod, a right rod, a middle cross bar and a plurality of vertical rods; one end of the left rod is connected to the left part of the top rod; one end of the right rod is connected to the right part of the top rod; one end of the middle cross bar is connected to the left rod, and the other end is connected to the right rod, and the middle cross bar includes an upper cross bar and a lower cross bar arranged up and down; the plurality of vertical rods are connected between the upper and lower cross bars, and one end of the vertical rod is connected to the upper cross bar, and the other end is connected to the lower cross bar; welding positions are formed at the connection between the top rod and the left and right rods, at the connection between the middle cross bar and the left and right rods, and at the connection between the vertical rod and the upper and lower cross bars;

[0006] The fence welding tool comprises: a first rotating table, a second rotating table, a rotating frame, and a workbench;

[0007] Wherein, one end of the rotating frame is connected to the first rotating platform, and the other end is connected to the second rotating platform;

[0008] The workbench comprises a mounting plate arranged on the rotating frame, and the mounting plate is provided with:

[0009] The first positioning unit is used to place the top rod of the fence; the second positioning unit is used to place the left rod and the right rod of the fence; the third positioning unit is used to place the middle horizontal rod of the fence; the fourth positioning unit is used to place multiple vertical rods of the fence; the welding gun through hole corresponds to the welding position to facilitate the welding operation on the front and back sides of the welding position.

[0010] The embodiment of the present application utilizes the first positioning unit, the second positioning unit, the third positioning unit, and the fourth positioning unit to enable the top rod, left and right rods, the middle cross rod, and multiple vertical rods of the fence to be fixed on the mounting plate, providing the possibility for welding the fence. Furthermore, the rotating frame can be rotated by the rotating table, and then the workbench can be rotated, and the front and back sides of the fence can be welded in cooperation with the welding gun through-hole, thereby improving the welding efficiency and solving the problem of low manual welding efficiency in the prior art. At the same time, the embodiment of the present application clamps the fence by tooling, which ensures the consistency of the fence after welding to a certain extent.

[0011] Preferably, the first positioning unit includes at least two positioning blocks, which are arranged along the length direction of the workbench, and the ejector rod is placed on the at least two positioning blocks. By providing more than two positioning blocks, the ejector rod is subjected to more uniform force, thereby enhancing the fixing effect; and by providing positioning blocks to limit the position of the ejector rod, the accuracy and efficiency of placing the workpiece are improved.

[0012] Preferably, the second positioning unit includes a left positioning unit for placing the left rod and a right positioning unit for placing the right rod.

[0013] Further, the left positioning unit includes at least one positioning block, the at least one positioning block is arranged along the width direction of the workbench, and the left rod is placed on the at least one positioning block;

[0014] The right positioning unit includes at least one positioning block, which is arranged along the width direction of the workbench, and the right rod is placed on the at least one positioning block. The positioning blocks are set to limit the positions of the left rod and the right rod, thereby improving the accuracy and efficiency of placing the workpiece.

[0015] Further, the left positioning unit further comprises a telescopic cylinder, the telescopic end of which contacts or separates from the left rod, and holds the middle part of the left rod when the telescopic end contacts the left rod; and / or

[0016] The right positioning unit further includes a telescopic cylinder, whose telescopic end contacts or separates from the right rod, and supports the middle part of the right rod when the telescopic end contacts the right rod. The telescopic cylinder can support the left rod and the right rod, and press the left rod and / or the right rod against the positioning block to fix the workpiece firmly, and the telescopic cylinder is used to speed up the clamping speed, thereby improving the welding efficiency.

[0017] Preferably, the third positioning unit includes an upper positioning unit and a lower positioning unit, wherein:

[0018] The upper positioning unit comprises at least two positioning blocks, the at least two positioning blocks are arranged along the width direction of the workbench, and the upper cross bar is placed on the at least two positioning blocks;

[0019] The lower positioning unit comprises at least two positioning blocks, the at least two positioning blocks are arranged along the width direction of the workbench, and the lower crossbar is placed on the at least two positioning blocks. The upper crossbar and the lower crossbar are fixed by the positioning blocks of the upper positioning unit and the lower positioning unit.

[0020] Preferably, the fourth positioning unit includes an upper positioning plate and a lower positioning plate, wherein the upper positioning plate is provided with a plurality of upper slots, and correspondingly, the lower positioning plate is also provided with a plurality of lower slots, one upper slot corresponds to one lower slot, and the vertical rod is placed in the upper and lower slots. Through the corresponding upper and lower slots, a plurality of vertical rods can be directly placed on the fourth positioning unit, thereby improving the accuracy and efficiency of placing the workpiece.

[0021] The utility model uses the positioning blocks or the slots of the positioning units to quickly place the workpieces to be welded at the designated positions each time, thereby improving the welding efficiency and the accuracy of the welding position.

[0022] Preferably, the fence welding tool further includes: a clamping unit, which includes a first clamping mechanism for clamping the top rod, a second clamping mechanism for clamping the left rod, a third clamping mechanism for clamping the right rod, and a fourth clamping mechanism for clamping the plurality of vertical rods. The clamping unit clamps the workpiece on the workbench to further improve welding accuracy.

[0023] Furthermore, the first clamping mechanism includes a clamping plate located above the push rod, and a telescopic cylinder connected to the clamping plate; the second clamping mechanism and the third clamping mechanism are quick clamps for respectively clamping the left rod and the right rod; the fourth clamping mechanism includes a pressure rod placed on a plurality of vertical rods, and a quick clamp for clamping the pressure rod. By clamping the push rod with a clamping plate and a telescopic cylinder connected to the clamping plate, space on the upper surface of the workbench is saved, making it easier to place the fence on the mounting plate. By clamping the left and right rods with a quick clamp, the left and right rods are prevented from falling off the upper surface of the workbench, thereby improving the clamping quality. By placing pressure rods on a plurality of vertical rods and a quick clamp for clamping the pressure rods, a plurality of vertical rods can be clamped at one time, thereby improving the clamping efficiency.

[0024] Preferably, the fence welding tool also includes: a telescopic unit, which includes a plurality of telescopic cylinders, for pushing the upper cross bar or the lower cross bar when the plurality of telescopic cylinders are extended, so that the upper cross bar, the lower cross bar and the plurality of vertical bars between the upper and lower cross bars are tightened.

[0025] Through the clamping unit and the telescopic unit, the workpiece placed on the mounting plate can be quickly fixed to prevent the workpiece from moving, further improving the accuracy of the welding position and the efficiency of welding.

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of a fence structure provided in an embodiment;

[0028] Figure 2 It is a schematic diagram of the structure of the fence welding tool provided in the embodiment;

[0029] Figure 3 is a schematic structural diagram of a first positioning unit provided in an embodiment;

[0030] Figure 4 is a schematic structural diagram of a second positioning unit provided in an embodiment;

[0031] Figure 5 is a schematic structural diagram of a third positioning unit provided in the embodiment;

[0032] Figure 6 is a schematic structural diagram of a fourth positioning unit provided in the embodiment;

[0033] Figure 7 is a schematic diagram of the structure of a compression unit provided in an embodiment;

[0034] Figure 8 It is a rear view of the mounting plate with the workpiece provided in the embodiment.

[0035] Description of reference numerals:

[0036] 1 Fence,

[0037] 110 top bar, 120 left bar, 130 right bar, 140 middle cross bar, 141 upper cross bar, 142 lower cross bar, 150 vertical bar;

[0038] 2 Fence welding tooling,

[0039] 200 first rotating table, 300 second rotating table, 400 rotating frame, 500 working table;

[0040] 510 mounting plate,

[0041] 511 first positioning unit, 511A positioning block;

[0042] 512 second positioning unit, 512A left positioning unit, 512A1 positioning block, 512A2 telescopic cylinder, 512B right positioning unit, 512B1 positioning block, 512B2 telescopic cylinder;

[0043] 513 third positioning unit, 513A upper positioning unit, 513A1 positioning block, 513B lower positioning unit, 513B1 positioning block;

[0044] 514 fourth positioning unit, 514A upper positioning plate, 514A1 upper card slot, 514B lower positioning plate, 514B1 lower card slot;

[0045] 515 welding gun through hole,

[0046] 520 compression unit,

[0047] 521 first clamping mechanism, 521A clamping sheet, 521B telescopic cylinder,

[0048] 522 second clamping mechanism, 522A quick clamp, 522B telescopic cylinder,

[0049] 523 The third clamping mechanism,

[0050] 524 fourth clamping mechanism, 524A pressure rod, 525B quick clamp,

[0051] 530 telescopic unit, 531 telescopic cylinder. DETAILED DESCRIPTION

[0052] In order to make the objectives, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0053] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the present application.

[0054] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0055] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and do not have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0056] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0057] The fence 1 is formed by welding a plurality of steel pipes together. Figure 1 As shown, the fence 1 described in the embodiment of the present application includes a top rod 110, a left rod 120, a right rod 130, a middle cross bar 140 and a plurality of vertical rods 150; wherein, one end of the left rod 120 is connected to the left part of the top rod 110; one end of the right rod 130 is connected to the right part of the top rod 110; one end of the middle cross bar 140 is connected to the left rod 120, and the other end is connected to the right rod 130, and the middle cross bar 140 includes an upper cross bar 141 and a lower cross bar 142 arranged up and down; the plurality of vertical rods 150 are connected between the upper and lower cross bars, and one end of the vertical rod 150 is connected to the upper cross bar 141, and the other end is connected to the lower cross bar 142; welding positions are formed at the connection between the top rod 110 and the left rod 120 and the right rod 130, at the connection between the middle cross bar 140 and the left rod 120 and the right rod 130, and at the connection between the vertical rod 150 and the upper and lower cross bars.

[0058] However, in the prior art, manual welding is difficult due to the large number of fence workpieces, the clamping is difficult, and the entire welding operation process is complicated, resulting in low welding efficiency. Furthermore, a workpiece needs to be welded at many points, manual welding is inevitably error-prone, and it is difficult to align, resulting in poor consistency of the welded fence.

[0059] like Figure 2As shown, the present application provides a fence welding tool 2 including: a first rotating table 200, a second rotating table 300, a rotating frame 400, and a workbench 500; one end of the rotating frame 400 is connected to the first rotating table 200, and the other end is connected to the second rotating table 300. The rotating frame 400 is located between the first rotating table 200 and the second rotating table 300, and can be rotated to a certain angle or turned over.

[0060] like Figures 3 to 6 The workbench 500 shown includes a mounting plate 510 disposed on the rotating frame 400, and the mounting plate 510 is provided with: a first positioning unit 511, which is used to place the top rod 110 of the fence 100; a second positioning unit 512, which is used to place the left rod 120 and the right rod 130 of the fence; a third positioning unit 513, which is used to place the middle crossbar 140 of the fence 100; a fourth positioning unit 514, which is used to place multiple vertical rods 150 of the fence; a welding gun through hole 515, which corresponds to the welding position, and is convenient for welding operations on the front and back sides of the welding position. When the rotating frame 400 is turned over to the back, the welding gun can weld the back of the workpiece through the welding gun through hole 515, eliminating the need to disassemble the fence 1 and then turn it over and reinstall it, thereby improving welding efficiency.

[0061] In this embodiment, the fence 1 is fixed on the mounting plate 510 for welding by using the first positioning unit 511, the second positioning unit 512, the third positioning unit 513, and the fourth positioning unit 514; and the welding gun can weld the back of the workpiece through the welding gun through hole 515, eliminating the need to repeatedly disassemble and install the back of the workpiece. By setting the positioning unit, the fence can be placed quickly, and multiple workpieces can be welded at the same time in one clamping, which greatly improves the welding efficiency.

[0062] like Figure 3 As shown, the first positioning unit 511 includes at least two positioning blocks 511A, and the at least two positioning blocks 511A are arranged along the length direction of the workbench 500, and the push rod 110 is placed on the at least two positioning blocks 511A. In this embodiment, the number of positioning blocks 511A is two, which are symmetrically distributed at both ends of the push rod 110. If the push rod is heavy, in order to ensure that the positioning blocks 511A are not damaged, the number of positioning blocks 511A can be increased to three or more. The shape of the positioning block 511A is a "concave" shape, which facilitates the direct engagement of a rectangular workpiece in the positioning block 511A to improve the placement accuracy. In other embodiments, the shape of the positioning block 511A can also be a rectangular column, which only positions one direction of the push rod 110, so that the push rod can be placed faster without engagement.

[0063] like Figure 4As shown, the second positioning unit 512 includes a left positioning unit 512A for placing the left rod 120 and a right positioning unit 512B for placing the right rod 130. The left positioning unit 512A includes at least one positioning block 512A1, which is arranged along the width direction of the workbench, and the left rod 120 is placed on the at least one positioning block 512A1; the right positioning unit 512B includes at least one positioning block 512B1, which is arranged along the width direction of the workbench, and the right rod 130 is placed on the at least one positioning block 512B1. In this embodiment, the left rod 120 and the right rod 130 are symmetrical structures, and the positioning blocks 512A1 and 512B1 placed thereon are also symmetrical in shape and position. Since the left rod 120 and the right rod 130 are less affected by the gravity of the workpiece, this embodiment provides one positioning block 512A1 and one positioning block 512B1. In other embodiments, in order to place the workpiece more stably, multiple positioning blocks 512A1 and multiple positioning blocks 512B1 are provided and evenly arranged along the width direction of the workbench.

[0064] like Figure 5 As shown, the third positioning unit 513 includes an upper positioning unit 513A and a lower positioning unit 513B.

[0065] The upper positioning unit 513A includes at least two positioning blocks 513A1, and the at least two positioning blocks 513A1 are arranged along the length direction of the workbench, and the upper cross bar 141 is placed on the at least two positioning blocks 513A1. The two positioning blocks 513A1 in this embodiment are three positioning blocks 513A1 evenly distributed along the length direction of the workbench, and the upper cross bar 141 is clamped at the position of the positioning blocks 513A1. In order to better fix the upper cross bar 141, a plurality of positioning blocks 513A1 similar to the present embodiment can be set in the length direction of the workbench; in order to reduce the mass of the workbench and speed up the placement speed of the upper cross bar 141, two positioning blocks 513A1 can also be arranged only at the two ends of the upper cross bar 141.

[0066] The lower positioning unit 513B includes at least two positioning blocks 513B1, which are arranged along the length direction of the workbench, and the lower cross bar 142 is placed on the at least two positioning blocks 513B1. The lower positioning unit 513B has the same structure as the upper positioning unit 513A. In this embodiment, the positioning block 513B1 also has a single-sided support column to bear the weight of the workpiece.

[0067] like Figure 6As shown, the fourth positioning unit 514 includes an upper positioning plate 514A and a lower positioning plate 514B, and a plurality of upper slots 514A1 are provided on the upper positioning plate 514A, and correspondingly, a plurality of lower slots 514B1 are provided on the lower positioning plate 514B, one upper slot 514A1 corresponds to one lower slot 514B1, and the vertical rod 150 is placed in the upper and lower slots. The shapes of the corresponding upper slots 514A1 and lower slots 514B1 match the shape of the cross section of the vertical rod 150, and the vertical rod 150 is placed in the slots and fits in place.

[0068] like Figure 7 As shown, the fence welding tool 2 also includes: a clamping unit 520, which includes a first clamping mechanism 521 for clamping the top rod 110, a second clamping mechanism 522 for clamping the left rod 120, a third clamping mechanism 523 for clamping the right rod 130, and a fourth clamping mechanism 524 for clamping the multiple vertical rods 150.

[0069] like Figure 7 and Figure 8 As shown, the first clamping mechanism 521 includes a clamping sheet 521A located above the push rod 110, and a telescopic cylinder 521B connected to the clamping sheet 521A. The telescopic cylinder 521B is located on the lower surface of the mounting plate 510, and the piston of the telescopic cylinder 521B passes through the mounting plate 510. The clamping sheet 521A is connected to the piston of the telescopic cylinder 521B, and the connection between the two is L-shaped. The push rod 110 is located in the middle of the L-shape, and the piston of the telescopic cylinder 521B is retracted. The clamping sheet 521A clamps the push rod 110 to achieve the effect of clamping the workpiece. In this embodiment, there are two clamping sheets 521A and two telescopic cylinders 521B, which are respectively located at the ends of the push rod 110. If the weight of the push rod is large and a greater clamping force is required, the number of the clamping sheets 521A and the telescopic cylinder 521B can be set to three or more.

[0070] Among them, the second clamping mechanism 522 and the third clamping mechanism 523 are quick clamps 522A, which are used to clamp the left rod 120 and the right rod 130 respectively. In this embodiment, the force applied to the left rod 120 and the right rod 130 is small, and a large holding force is not required, so a quick clamp is selected; the second clamping mechanism 522 also includes a telescopic cylinder 522B, which is used to push the left rod 120 onto the positioning block 512A1. In this embodiment, the left rod 120 also has a convex rod, and the telescopic cylinder 522B pushes the convex rod to the left rod 120, and pushes the left rod onto the positioning block 512A1. In other embodiments, when the force applied to the left rod 120 and the right rod 130 is large and a larger clamping force is required, a clamping method using a clamping sheet and a telescopic cylinder is used.

[0071] Wherein, the fourth clamping mechanism 524 includes a pressing rod 524A placed on a plurality of vertical rods 150, and a quick clamp 524B for clamping the pressing rod 524A. In the present embodiment, there are two pressing rods 524A, which are perpendicular to the vertical rods 150 and placed at both ends of the vertical rods 150, and each pressing rod 524A is clamped by three quick clamps 524B. Since the number of vertical rods 150 is large, a plurality of vertical rods 150 can be clamped by using one pressing rod 524A, thereby improving the clamping efficiency. The provision of a plurality of quick clamps 524B enables the pressing rod 524A to be uniformly clamped, thereby improving the clamping accuracy. In other embodiments, when a higher clamping accuracy is not required, only one pressing rod 524A can be installed at the center of the vertical rod 150, and a quick clamp 524B is provided at each of the left and right ends of the pressing rod to improve the clamping speed.

[0072] Further, such as Figure 4 As shown, the left positioning unit 512A further includes a telescopic cylinder 512A2, whose telescopic end contacts or separates from the left rod, and holds the middle of the left rod 120 when the telescopic end contacts the left rod 120; and / or the right positioning unit 512B further includes a telescopic cylinder, whose telescopic end contacts or separates from the right rod 130, and holds the middle of the right rod 130 when the telescopic end contacts the right rod 130. In this embodiment, there is one left telescopic cylinder 512A2 and one right telescopic cylinder 512B2, both of which are installed on the lower surface of the workbench 500. After placing the fence 1, the telescopic cylinder 512A2 and the telescopic cylinder 512B2 extend to support the fence, and then the telescopic cylinder 522B extends to clamp the fence 1, and the telescopic cylinder 512A2 and the telescopic cylinder 512B2 retract. In other embodiments, when the weight of the left rod 120 or the right rod 130 is relatively large, a plurality of telescopic cylinders may be provided to support the left rod 120 or the right rod 130 .

[0073] like Figure 7 As shown, further, the fence welding tool 2 also includes: a telescopic unit 530, which includes a plurality of telescopic cylinders 531, which are used to push the upper crossbar 141 or the lower crossbar 142 when the plurality of telescopic cylinders 531 are extended, so that the upper crossbar 141, the lower crossbar 142 and the plurality of vertical rods 150 between the upper and lower crossbars are pressed tightly. In this embodiment, the number of telescopic cylinders 531 is 3, and the piston of the telescopic cylinder 531 pushes the lower crossbar 142 to move, thereby driving the vertical rod 150 and the upper crossbar 141 to move until they are pressed tightly against the positioning block 513C.

[0074] The above-mentioned embodiments only express several implementation methods of the embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the embodiments of the present application, and these all belong to the protection scope of the embodiments of the present application.

Claims

1. Fence welding tool, characterized by: The fence comprises: a top bar, a left bar, a right bar, a middle horizontal bar and a plurality of vertical bars; Among them, one end of the left rod is connected to the left part of the top rod; one end of the right rod is connected to the right part of the top rod; one end of the middle cross bar is connected to the left rod, and the other end is connected to the right rod, and the middle cross bar includes an upper cross bar and a lower cross bar arranged up and down; the multiple vertical rods are connected between the upper and lower cross bars, and one end of the vertical rod is connected to the upper cross bar, and the other end is connected to the lower cross bar; welding positions are formed at the connection between the top rod and the left and right rods, the connection between the middle cross bar and the left and right rods, and the connection between the vertical rod and the upper and lower cross bars; The fence welding tool comprises: a first rotating table, a second rotating table, a rotating frame, and a workbench; Wherein, one end of the rotating frame is connected to the first rotating platform, and the other end is connected to the second rotating platform; The workbench comprises a mounting plate arranged on the rotating frame, and the mounting plate is provided with: The first positioning unit is used to place the top rod of the fence; the second positioning unit is used to place the left rod and the right rod of the fence; the third positioning unit is used to place the middle horizontal rod of the fence; the fourth positioning unit is used to place multiple vertical rods of the fence; the welding gun through hole corresponds to the welding position to facilitate the welding operation on the front and back sides of the welding position.

2. The fence welding tool according to claim 1, characterized in that: The first positioning unit includes at least two positioning blocks, the at least two positioning blocks are arranged along the length direction of the workbench, and the ejector rod is placed on the at least two positioning blocks.

3. The fence welding tool according to claim 1, characterized in that: The second positioning unit includes a left positioning unit for placing the left rod and a right positioning unit for placing the right rod.

4. The fence welding tool according to claim 3, characterized in that: The left positioning unit comprises at least one positioning block, the at least one positioning block is arranged along the width direction of the workbench, and the left rod is placed on the at least one positioning block; The right positioning unit includes at least one positioning block, the at least one positioning block is arranged along the width direction of the workbench, and the right rod is placed on the at least one positioning block.

5. The fence welding tool according to claim 3, characterized in that: The left positioning unit further comprises a telescopic cylinder, the telescopic end of which contacts or separates from the left rod, and holds the middle part of the left rod when the telescopic end contacts the left rod; and / or The right positioning unit also includes a telescopic cylinder, a telescopic end of which contacts or separates from the right rod, and holds the middle part of the right rod when the telescopic end contacts the right rod.

6. The fence welding tool according to claim 1, characterized in that: The third positioning unit includes an upper positioning unit and a lower positioning unit, wherein: The upper positioning unit comprises at least two positioning blocks, the at least two positioning blocks are arranged along the length direction of the workbench, and the upper cross bar is placed on the at least two positioning blocks; The lower positioning unit comprises at least two positioning blocks, the at least two positioning blocks are arranged along the length direction of the workbench, and the lower cross bar is placed on the at least two positioning blocks.

7. The fence welding tool according to claim 1, characterized in that: The fourth positioning unit includes an upper positioning plate and a lower positioning plate. The upper positioning plate is provided with a plurality of upper slots. Correspondingly, the lower positioning plate is also provided with a plurality of lower slots. One upper slot corresponds to one lower slot. The vertical rod is placed in the upper and lower slots.

8. The fence welding tool according to claim 1, characterized in that: The fence welding tool also includes: The clamping unit includes a first clamping mechanism for clamping the top rod, a second clamping mechanism for clamping the left rod, a third clamping mechanism for clamping the right rod, and a fourth clamping mechanism for clamping the plurality of vertical rods.

9. The fence welding tool according to claim 8, characterized in that: The first pressing mechanism comprises a pressing sheet located above the push rod, and a telescopic cylinder connected to the pressing sheet; The second clamping mechanism and the third clamping mechanism are quick clamps, which are used to clamp the left rod and the right rod respectively; The fourth clamping mechanism includes a compression rod placed on a plurality of vertical rods and a quick clamp for clamping the compression rod.

10. The fence welding tool according to claim 1, characterized in that: The fence welding tool also includes: The telescopic unit comprises a plurality of telescopic cylinders, which are used to push the upper crossbar or the lower crossbar when the plurality of telescopic cylinders are extended, so that the upper crossbar, the lower crossbar and a plurality of vertical bars between the upper and lower crossbars are pressed tightly.

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