Shield welding device

Abstract

The invention relates to the technical field of shield welding equipment, and particularly discloses a shield welding device. The shield comprises a fixing module used for fixing a shield body; the suction module is used for connecting the observation window to the shield body in a butt joint mode; the welding module is used for welding the observation window to the shield main body; the welding module comprises a welding head, a moving assembly driving the welding head to move in a three-axis mode and supporting legs supporting the moving assembly. The moving assembly comprises a transverse sliding rail, a first sliding block installed on the transverse sliding rail in a sliding mode and a first motor driving the first sliding block to slide along the transverse sliding rail. The observation window can be automatically welded to the shield body.

Description

Technical Field

[0001] The invention relates to the technical field of shield welding equipment, and in particular to a shield welding device. Background Art

[0002] An arm shield is a type of shield. Its main function is to resist attacks from offensive weapons such as knives, swords, and sticks, and effectively protect the police's arms and bodies from injury. For shields with metal frames and metal panels, welding processes are often used in the frame and other connecting parts. The metal frame and the edge of the high-strength PC (polycarbonate) panel are fixed by welding, so that the shield will not be easily damaged when responding to violent impacts; at the same time, for some shields with observation windows, for example, patents with publication numbers CN220206508U and CN305237422S, the frame of the observation window may also be connected to the shield body by welding to ensure the sealing and stability of the observation window, to prevent it from breaking or falling off due to impact during use, affecting the user's observation and protection effect.

[0003] However, shield welding currently mainly relies on manual welding, and there is a lack of automated welding equipment for shields.

[0004] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the invention

[0005] The purpose of the present invention is to provide a shield welding device which can effectively solve the above technical problems.

[0006] In order to achieve the purpose of the present invention, the following technical scheme is adopted: A shield welding device comprises: a fixing module: used for fixing a shield body; Absorption module: used to dock the observation window onto the shield body; Welding module: used to weld the observation window to the shield body; The welding module comprises: a welding head, a moving assembly driving the welding head to move in three axes, and a supporting leg supporting the moving assembly; The moving assembly includes: a transverse slide rail, a first slider slidably mounted on the transverse slide rail, and a first motor driving the first slider to slide along the transverse slide rail; a longitudinal slide rail slidably mounted on the first slider, a second slider slidably mounted on the longitudinal slide rail, and a second motor driving the second slider to slide along the longitudinal slide rail; a vertical slide rail fixedly mounted on the second slider, a third slider slidably mounted on the vertical slide rail, and a third motor driving the third slider to slide along the vertical slide rail.

[0007] Furthermore, the suction module includes: a base; a vertical guide rail fixedly installed on the base; a fourth slider slidably installed on the vertical guide rail; a fourth motor that drives the fourth slider to slide; a connecting seat fixedly installed on the fourth slider; a rotating seat rotatably installed on the top of the connecting seat; a seventh motor that drives the rotating seat to rotate; a transverse guide rail fixedly installed on the top of the rotating seat; a fifth slider slidably installed on the transverse guide rail; a fifth motor that drives the fifth slider to slide; a connecting tube is rotatably installed on the fifth slider, a sixth motor is fixedly installed on the fifth slider, and an output end of the sixth motor is connected to the connecting tube; an arc plate is fixedly installed on the other end of the connecting tube; and a suction cup is provided on the concave side of the arc plate.

[0008] Furthermore, at least three suction cups are installed in sequence on the concave side of the arc plate, and each suction cup is installed with a pressure sensor; the pressure sensor is electrically connected to a controller; and the controller identifies the convex side or concave side of the observation window based on the pressure measured by the pressure sensor.

[0009] Furthermore, the controller performs the following steps to identify the pressure based on the pressure measured by the pressure sensor: S1, set the pressure value of the left sensor to be P1; the pressure value of the middle sensor to be P2; the pressure value of the right sensor to be P3; the pressure difference threshold is θ; the real-time pressure difference between the left sensor and the middle sensor is △P1; the real-time pressure difference between the right sensor and the middle sensor is △P2; set the threshold of the difference between △P1 and △P2 to θ2, and the difference is △P3; the controller extracts the actual pressure measured by the pressure sensor in real time and calculates them respectively; S2, the controller compares △P1 and △P2 with θ1 respectively, and compares △P3 with θ2; based on the comparison results, the absorption module is controlled to execute corresponding instructions; S2.1, if △P1>θ1, and △P2>θ1, and △P3<θ2, the suction side is the concave side of the observation window, and the controller controls the suction module to execute the first mode; S2.2, if △P1<θ1, and △P2<θ1, and △P3<θ2, the suction side is the convex side of the observation window, and the controller controls the suction module to execute the second mode; S2.3, if △P3>θ2, the controller controls the absorption module to execute the third mode and executes S3; S3, after executing the third mode, re-execute S2; if △P3>θ2 appears again, send an error signal to prompt the staff to check the equipment; The first mode is to move the observation window from the waiting position to the welding position; the second mode is to take the observation window out from the waiting position, flip it over, and then move it to the welding position; the third mode is to put the observation window down and then suck it again.

[0010] Furthermore, the fixing module includes: a fixing seat, a telescopic cylinder fixedly mounted on the fixing seat, and a fixing member fixedly connected to a piston rod of the telescopic cylinder.

[0011] Furthermore, a limit plate is installed in the middle of the workbench, and the limit plate is adapted to the convex side of the shield body, and is used to cooperate with the fixing module to fix the shield body; a guide limit hole is opened through the limit plate; Clamping fine-adjusting parts are hinged on both sides of the guide limiting hole.

[0012] Furthermore, it also includes: a cleaning module; the cleaning module includes: a high-pressure air source, a high-pressure nozzle connected to a first air outlet end of the high-pressure air source, and a knocking piece connected to a second air outlet end of the high-pressure air source.

[0013] Furthermore, a piston tube is installed between the second air outlet end and the knocking piece; the piston tube is T-shaped, and a piston and a knocking piece are slidably installed in the piston tube.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present application can automatically weld the observation window to the shield body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0016] Figure 1 It is a schematic diagram of the axial side of the present invention; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the absorption module of the present invention; Figure 4 is a schematic diagram of the absorption module of the present invention; Figure 5 It is a structural schematic diagram of the welding module of the present invention; Figure 6 for Figure 5 A partial enlarged view of part A; Figure 7 It is a structural schematic diagram of the limiting plate of the present invention; Figure 8 For the present invention Figure 7 A partial enlarged view of part B; Fig. 9 It is a schematic structural diagram of the striking member of the present invention.

[0017] In the figure: 1, machine; 2, fixed module; 3, suction module; 4, cleaning module; 5, welding module; 6, storage box; 21, fixed seat; 22, telescopic cylinder; 23, fixing piece; 51, welding head; 52, moving assembly; 53, supporting leg; 7, workbench; 521, horizontal slide rail; 522, first motor; 523, longitudinal slide rail; 524, second motor; 525, vertical slide rail; 526, third motor; 301, base; 302, vertical Guide rail; 303, fourth motor; 304, connecting seat; 305, seventh motor; 306, rotating seat; 307, transverse guide rail; 308, fifth motor; 309, sixth motor; 310, connecting pipe; 311, arc plate; 312, suction cup; 71, limit plate; 711, guide limit hole; 712, clamping fine-tuning part; 713, reset spring; 41, high-pressure nozzle; 42, knocking part; 43, piston tube; 431, piston; 432, spring. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments.

[0019] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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 limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0020] like Figures 1 to 9 As shown, a shield welding device of the present invention comprises: a machine platform 1, a fixing module 2 for fixing a shield body, a suction module 3 for placing an observation window into a notch reserved in the shield body, a cleaning module 4 for cleaning the edge of the observation window before welding, and a welding module 5 for welding the observation window to the shield body.

[0021] A storage box 6 for placing an observation window is placed on one side of the machine 1, which is convenient for the suction module 3 to suck the observation window; openings are opened on the left and right sides of the machine 1, and the openings are sealed with glass doors or transparent plates, which are convenient for observing the situation inside the machine 1; a double-leaf door is hinged on the front side of the machine 1, which is convenient for manually placing the shield body on the workbench 7 for welding processing.

[0022] After the staff processes the observation window and puts it in the storage box 6, it will be placed on the front, back or in a disorderly manner. The storage box 6 can limit the observation window, but cannot automatically adjust the placement direction. However, the concave surface of the observation window needs to face upwards during welding, so it needs to be adjusted according to the front and back directions of the observation window.

[0023] The fixing module 2 includes: a fixing seat 21, a telescopic cylinder 22 fixedly mounted on the fixing seat 21, and a fixing member 23 fixedly connected to the piston 431 of the telescopic cylinder 22; and is used to drive the fixing member 23 to rise and fall through the telescopic cylinder 22 to loosen or fix the shield body.

[0024] The welding module 5 includes: a welding head 51 , a moving assembly 52 for driving the welding head 51 to move in three axes, and a supporting leg 53 for supporting the moving assembly 52 . The supporting leg 53 is fixedly mounted on the workbench 7 .

[0025] The moving assembly 52 includes: a transverse slide rail 521, a first slider slidably mounted on the transverse slide rail 521, and a first motor 522 that drives the first slider to slide along the transverse slide rail 521; a longitudinal slide rail 523 slidably mounted on the first slider, a second slider slidably mounted on the longitudinal slide rail 523, and a second motor 524 that drives the second slider to slide along the longitudinal slide rail 523; a vertical slide rail 525 fixedly mounted on the second slider, a third slider slidably mounted on the vertical slide rail 525, and a third motor 526 fixedly mounted on the top of the vertical slide rail 525.

[0026] The first motor 522 is fixedly installed on the machine 1, and the output end of the first motor 522 is threadedly connected to the first slider; the second motor 524 is fixedly installed on the mounting seat, and the output end of the second motor 524 is threadedly connected to the second slider, and the mounting seat is fixedly installed on the longitudinal slide rail 523; the output end of the third motor 526 is threadedly connected to the third slider; the welding head 51 is driven to move horizontally by the first motor 522, and the welding head 51 is driven to move longitudinally by the second motor 524, and the welding head 51 is driven to move up and down by the third motor 526; the circular arc interpolation method is used to control the first motor 522 and the second motor 524 to fit the trajectory of the approximate arc to weld the arc edge of the observation window.

[0027] The suction module 3 is located below the workbench 7, and the suction module 3 includes: a base 301; a vertical guide rail 302 fixedly mounted on the base 301; a fourth motor 303 fixedly mounted on the base 301; a screw rod drivingly connected to the output end of the fourth motor 303; a fourth slider slidably mounted on the vertical guide rail 302 and threadedly connected to the screw rod; a connecting seat 304 fixedly mounted on the fourth slider; a seventh motor 305 fixedly mounted at the bottom of the connecting seat 304; a rotating seat 306 rotatably mounted on the top of the connecting seat 304, and the bottom of the rotating seat 306 is connected to the output end of the seventh motor 305; a transverse guide rail 307 fixedly mounted on the top of the rotating seat 306; a fifth slider slidably mounted on the transverse guide rail 307; a fixedly mounted A fifth motor 308 at one end of the transverse guide rail 307; a first synchronous pulley fixedly connected to the output end of the fifth motor 308; a second synchronous pulley transmission-connected to the first synchronous pulley; a mounting shell fixedly mounted on the other end of the transverse guide rail 307; a third synchronous pulley rotatably mounted in the mounting shell; the first synchronous pulley is connected to the second synchronous pulley by a first synchronous belt transmission, and the second synchronous pulley is connected to the third synchronous pulley by a second synchronous belt transmission; a fifth slider is mounted on the synchronous belt; a sixth motor 309 is fixedly mounted on the fifth slider; a connecting tube 310 is fixedly connected to the output end of the sixth motor 309, and an arc plate 311 is fixedly mounted on the other end of the connecting tube 310; a suction cup 312 is provided on the concave side of the arc plate 311. The fourth motor 303 drives the fourth slider to slide, so as to drive the suction cup 312 to rise and fall; the seventh motor 305 drives the rotating seat 306 to rotate, so as to drive the suction cup 312 to move circumferentially along the rotating seat 306; the fifth motor 308 drives the synchronous fifth slider to slide, so as to drive the suction cup 312 to slide along the transverse guide rail 307; the sixth motor 309 drives the connecting tube 310 to rotate, so as to drive the suction cup 312 to rotate.

[0028] The concave side of the arc plate 311 is sequentially installed with left, middle and right suction cups 312, and the adsorption ends of the left, middle and right suction cups 312 are respectively installed with pressure sensors; the pressure sensor is electrically connected to the controller; the controller identifies the convex side or concave side of the observation window based on the pressure measured by the pressure sensor.

[0029] The steps for the controller to identify the pressure based on the pressure sensor are as follows: S1, set the pressure value of the left sensor to be P1; the pressure value of the middle sensor to be P2; the pressure value of the right sensor to be P3; the pressure difference threshold is θ; the real-time pressure difference between the left sensor and the middle sensor is △P1; the real-time pressure difference between the right sensor and the middle sensor is △P2; set the threshold of the difference between △P1 and △P2 to θ2, and the difference is △P3; the controller extracts the actual pressure measured by the pressure sensor in real time and calculates them respectively; Among them, △P1=P1-P2; △P2=P3-P2; △P3=△P1-△P2, and the solution is: △P3=P1-P3; S2, the controller compares △P1 and △P2 with θ1 respectively, and compares △P3 with θ2; based on the comparison results, the absorption module 3 is controlled to execute corresponding instructions; S2.1, if △P1>θ1, and △P2>θ1, and △P3<θ2, the suction side is the concave side of the observation window, and the controller controls the suction module 3 to execute the first mode; S2.2, if △P1<θ1, and △P2<θ1, and △P3<θ2, the suction side is the convex side of the observation window, and the controller controls the suction module 3 to execute the second mode; S2.3, if △P3>θ2, the controller controls the absorption module 3 to execute the third mode and executes S3; S3, after executing the third mode, re-execute S2, if △P3>θ2, send an error signal to prompt the staff to determine whether the equipment is faulty; The first mode is to move the observation window from the waiting position to the welding position; the second mode is to take the observation window out of the waiting position, flip it over, and then move it to the welding position; the third mode is to put the observation window down and then suck it again.

[0030] An arc-shaped limiting plate 71 is installed in the middle of the workbench 7, and the limiting plate 71 is adapted to the convex side of the shield body, and is used to cooperate with the fixing module 2 to fix the shield body; a guide limiting hole 711 is opened through the limiting plate 71, and the bottom of the guiding limiting hole 711 is composed of a limiting part and a guiding part from top to bottom; the limiting part is vertical; the guiding part gradually spreads outward from top to bottom, so as to play a guiding role.

[0031] A clamping fine-tuning member 712 is rotatably mounted on the inner side of the guide portion. The clamping fine-tuning member 712 includes a clamping fine-tuning portion and a return spring 713 connected to the clamping fine-tuning portion.

[0032] After welding is completed, the suction cup 312 is pushed up again to discharge the material; when it is pushed up, the clamping plates on both sides are pressed tightly, and the position of the observation window is finely adjusted during the clamping process; Dust particles themselves may be mixed into the molten pool and become slag inclusions after the weld solidifies. Slag inclusions will destroy the continuity of the weld metal, easily cause stress concentration when the weld is under load, and become the starting point of weld cracking.

[0033] The rotating rod is also equipped with an industrial camera for photographing the welding point and an infrared camera for photographing during the welding process; the industrial camera is used to capture the shape of the observation window to help identify whether the observation window is aligned with the shield body; the infrared camera is used to capture welding images.

[0034] The cleaning module 4 includes: a high-pressure gas source fixedly installed on the top of the third slider, a high-pressure nozzle 41 connected to the first gas outlet end of the high-pressure gas source, and a knocking piece 42 connected to the second gas outlet end of the high-pressure gas source; the knocking piece 42 is used for preliminary cleaning of the welding slag remaining after welding.

[0035] A piston tube 43 is installed between the second gas outlet and the knocking piece 42. The piston tube 43 is T-shaped, and a piston 431 is slidably installed inside the pipe of the transverse part thereof. The vertical part is hinged with the knocking piece 42, and there is a gap between the vertical part and the knocking piece 42. One end of the transverse part is connected to the second gas outlet, and a spring 432 is fixedly installed at the other end of the transverse part, and the other end of the spring 432 is connected to the piston 431. The air at the second gas outlet, on the one hand, drives the knocking piece 42 to knock the welding slag on both sides of the weld, and on the other hand, high-pressure gas is intermittently discharged from between the piston tube 43 and the knocking piece 42 to blow away the welding slag.

[0036] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0037] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A shield welding device, characterized in that: include: Fixed module: used to fix the shield body; Absorption module: used to dock the observation window onto the shield body; Welding module: used to weld the observation window to the shield body; The welding module comprises: a welding head, a moving assembly driving the welding head to move in three axes, and a supporting leg supporting the moving assembly; The moving assembly includes: a transverse slide rail, a first slider slidably mounted on the transverse slide rail, and a first motor driving the first slider to slide along the transverse slide rail; a longitudinal slide rail slidably mounted on the first slider, a second slider slidably mounted on the longitudinal slide rail, and a second motor driving the second slider to slide along the longitudinal slide rail; a vertical slide rail fixedly mounted on the second slider, a third slider slidably mounted on the vertical slide rail, and a third motor driving the third slider to slide along the vertical slide rail.

2. A shield welding device as claimed in claim 1, characterized in that: The suction module includes: a base; a vertical guide rail fixedly installed on the base; a fourth slider slidably installed on the vertical guide rail; a fourth motor that drives the fourth slider to slide; a connecting seat fixedly installed on the fourth slider; a rotating seat rotatably installed on the top of the connecting seat; a seventh motor that drives the rotating seat to rotate; a transverse guide rail fixedly installed on the top of the rotating seat; a fifth slider slidably installed on the transverse guide rail; a fifth motor that drives the fifth slider to slide; a connecting tube is rotatably installed on the fifth slider, a sixth motor is fixedly installed on the fifth slider, and an output end of the sixth motor is connected to the connecting tube; an arc plate is fixedly installed on the other end of the connecting tube; a suction cup is provided on the concave side of the arc plate.

3. A shield welding device as claimed in claim 2, characterized in that: At least three suction cups are sequentially installed on the concave side of the arc plate, and each suction cup is installed with a pressure sensor; the pressure sensor is electrically connected to a controller; the controller identifies the convex side or concave side of the observation window based on the pressure measured by the pressure sensor.

4. A shield welding device as claimed in claim 3, characterized in that: The controller performs the following steps based on the pressure recognition measured by the pressure sensor: S1, set the pressure value of the left sensor to be P1; the pressure value of the middle sensor to be P2; the pressure value of the right sensor to be P3; the pressure difference threshold is θ; the real-time pressure difference between the left sensor and the middle sensor is △P1; the real-time pressure difference between the right sensor and the middle sensor is △P2; set the threshold of the difference between △P1 and △P2 to θ2, and the difference is △P3; the controller extracts the actual pressure measured by the pressure sensor in real time and calculates them respectively; S2, the controller compares △P1 and △P2 with θ1 respectively, and compares △P3 with θ2; based on the comparison results, the absorption module is controlled to execute corresponding instructions; S2.1, if △P1>θ1, and △P2>θ1, and △P3<θ2, the suction side is the concave side of the observation window, and the controller controls the suction module to execute the first mode; S2.2, if △P1<θ1, and △P2<θ1, and △P3<θ2, the suction side is the convex side of the observation window, and the controller controls the suction module to execute the second mode; S2.3, if △P3>θ2, the controller controls the absorption module to execute the third mode and executes S3; S3, after executing the third mode, re-execute S2; if △P3>θ2 appears again, send an error signal to prompt the staff to check the equipment; The first mode is to move the observation window from the waiting position to the welding position; the second mode is to take the observation window out from the waiting position, flip it over, and then move it to the welding position; the third mode is to put the observation window down and then suck it again.

5. A shield welding device as claimed in claim 1, characterized in that: The fixing module comprises: a fixing seat, a telescopic cylinder fixedly mounted on the fixing seat, and a fixing piece fixedly connected to a piston rod of the telescopic cylinder.

6. A shield welding device as claimed in claim 1, characterized in that: A limit plate is installed in the middle of the workbench, and the limit plate is adapted to the convex side of the shield body, and is used to cooperate with the fixing module to fix the shield body; a guide limit hole is opened through the limit plate; Clamping fine-adjusting parts are hinged on both sides of the guide limiting hole.

7. A shield welding device as claimed in claim 1, characterized in that: Also includes: Cleaning module; The cleaning module comprises: a high-pressure gas source, a high-pressure nozzle connected to a first gas outlet end of the high-pressure gas source, and a knocking member connected to a second gas outlet end of the high-pressure gas source.

8. A shield welding device as claimed in claim 7, characterized in that: A piston tube is installed between the second air outlet end and the knocking piece; the piston tube is T-shaped, and a piston and a knocking piece are slidably installed in the piston tube.

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