A welding device for fire box fittings

Abstract

The application relates to the technical field of welding devices, in particular to a welding device for fire-fighting box accessories, which comprises a base, a distance adjusting support is fixedly installed on the upper surface right side of the base, a workpiece inner clamping mechanism is fixedly installed on one side of the upper clamping table, a workpiece rotating mechanism is fixedly installed on the inner side of a driving box, a movable guide rail is fixedly installed on the upper end of a limiting support and a positioning ring support, a welding displacement mechanism is slidably installed on the upper end of the movable guide rail, an extension motor is fixedly installed on the surface of one side of the limiting support, and a workpiece conveying mechanism is fixedly installed between the extension motor and the limiting support. The movable clamping block inner support centering of the workpiece inner clamping mechanism and the accurate index rotation of the workpiece rotating mechanism are combined, five triangular plates are strictly fixed on the outer wall of a hollow shaft according to equal angles and equal intervals, the perpendicularity and position precision of the triangular plate installation are guaranteed, the problems of traditional welding positioning deviation and uneven triangular plate arrangement are solved from the root, and the structural consistency of a water hose reel shaft support is improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a welding device for fire box accessories. Background Technology

[0002] A fire hose box is a fixed fire-fighting device installed on the fire water supply pipeline within a building. It consists of a box, fire hydrant, fire hose, fire nozzle, and other fire-fighting equipment. Used for rapid initial fire suppression, it is one of the core terminal devices of a building's fire protection system. Installation methods include surface mounting, concealed mounting, and semi-concealed mounting. The fire hose reel bracket is a key component inside the fire hose box, mainly composed of a hollow round shaft and multiple triangular connecting and fixing mounting plates. It is used to fix the fire hose reel, ensuring neat hose storage and smooth access. Its structural stability directly affects the rapid deployment of the fire hose and the efficiency of fire extinguishing.

[0003] Currently, existing technologies for welding hose reel supports mostly employ manual welding or simple semi-automatic welding methods. Manual welding requires operators to manually position the hollow circular shaft and triangular mounting plates, welding point by point, which is cumbersome and inefficient. Simple semi-automatic welding equipment lacks a dedicated positioning mechanism, making it difficult to ensure uniform spacing and perpendicularity of multiple triangular mounting plates on the hollow circular shaft, easily leading to uneven welds and weak connections. These processing methods not only fail to meet the needs of mass production but also result in insufficient structural stability of the support, affecting the safety of the fire hose reel box. Therefore, a dedicated welding device is urgently needed to solve these technical problems. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and to propose a welding device for fire box accessories.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a welding device for fire box accessories, comprising a base, an adjustable bracket fixedly installed on the right side of the upper surface of the base, an upper clamping platform fixedly installed on the upper end of the adjustable bracket, a workpiece inner clamping mechanism fixedly installed on one side of the upper clamping platform, a positioning ring bracket fixedly installed on the left side of the adjustable bracket on the upper surface of the base, a drive box fixedly installed on the upper surface of the base between the adjustable bracket and the positioning ring bracket, a workpiece rotating mechanism fixedly installed inside the drive box, a limit bracket fixedly installed on the left side of the positioning ring bracket on the upper surface of the base, a moving guide rail fixedly installed on the upper end of the limit bracket and the positioning ring bracket, a welding displacement mechanism slidably installed on the upper end of the moving guide rail, a telescopic motor fixedly installed on one side surface of the limit bracket, and a workpiece conveying mechanism fixedly installed between the telescopic motor and the limit bracket.

[0006] As a preferred technical solution of the present invention, the workpiece clamping mechanism further includes a telescopic rod fixedly installed on one side surface of the upper clamping platform. An adjusting screw is fixedly installed at the output end of the telescopic rod. A workpiece positioning plate is sleeved on the outside of the adjusting screw. A locking nut is rotatably installed on one side of the adjusting screw. An outer clamping shell is rotatably installed on the outside of the adjusting screw between the workpiece positioning plate and the locking nut.

[0007] As a preferred technical solution of the present invention, an adjusting connecting rod ring is slidably installed on the inner side of the outer tight shell, and four movable clamping blocks arranged at equal angles are rotatably installed on the inner side of the outer tight shell.

[0008] As a preferred technical solution of the present invention, the workpiece rotation mechanism further includes a drive motor fixedly installed on one side of the drive box. The output end of the drive motor passes through the drive box and is fixedly installed with an active transmission gear on the inner side. Two symmetrically arranged active transmission rollers are rotatably installed inside the drive box. Each active transmission roller is fixedly installed with a follower gear on the side close to the drive motor. The follower gear meshes with the active transmission gear.

[0009] As a preferred technical solution of the present invention, the welding displacement mechanism further includes a component support slide seat that is slidably mounted on the upper end of the moving guide rail. A symmetrical slide mounting bracket is fixedly mounted on the upper end of the component support slide seat. A set of spacing adjustment rods is fixedly mounted on the inner side of each of the two slide mounting brackets, and each pair of adjacent spacing adjustment rods constitutes a set.

[0010] As a preferred technical solution of the present invention, a clamping adjustment seat is rotatably installed between each set of spacing adjustment rods, a welding gun is fixedly installed between the clamping adjustment seats, and two guide rods are symmetrically passed through between the two slide table mounting brackets.

[0011] As a preferred technical solution of the present invention, the workpiece conveying mechanism further includes a self-centering clamping chuck fixedly installed on the upper end of the limiting bracket. The self-centering clamping chuck has five slots arranged at equal angles on its outer side. A positioning inner hole is fixedly installed on the inner side of the self-centering clamping chuck. Symmetrical fixing rods are fixedly installed on the rear surface of the limiting bracket. A limiting feeding frame is fixedly installed on the upper end of the fixing rods.

[0012] As a preferred technical solution of the present invention, a telescopic motor is fixedly installed on the lower end of one side surface of the limiting feeder, and guide grooves are opened on both sides of the limiting feeder. A connecting flange is fixedly installed on the output end of the telescopic motor, and the connecting flange is slidably installed inside the guide groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This solution achieves bidirectional end face limiting of the hollow cylindrical shaft through the workpiece positioning plate and positioning inner hole. Combined with the movable clamping block of the workpiece inner clamping mechanism for centering and the precise indexing rotation of the workpiece rotation mechanism, five triangular plates can be strictly fixed on the outer wall of the hollow shaft at equal angles and intervals, effectively ensuring the verticality and positional accuracy of the triangular plates. This fundamentally solves the problems of traditional welding positioning deviation and uneven triangular plate arrangement, and greatly improves the structural consistency of the water tape reel shaft bracket.

[0015] 2. The device integrates a workpiece conveying mechanism, clamping mechanism, rotating mechanism, and welding positioning mechanism. The triangular plates are automatically oriented and conveyed by a telescopic motor, eliminating the need for manual alignment. After welding, the device can automatically index and switch workstations, cyclically completing the welding of five triangular plates. The entire process requires only simple material loading and unloading, significantly simplifying the operation. Compared to manual welding and simple semi-automatic equipment, production efficiency is significantly improved, meeting the needs of mass production of fire protection accessories.

[0016] 3. The welding positioning mechanism can flexibly adjust the welding torch posture through the spacing adjustment rod and clamping adjustment seat, coordinating with the uniform rotation of the workpiece to ensure a uniform and full weld, a firm connection, and avoid defects such as incomplete welding, missed welding, and uneven welds. The finished bracket structure meets the strength and stability standards, can reliably support the hose reel, ensure the normal use of the fire box in fire emergency scenarios, and improve the safety and reliability of fire-fighting accessories. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the welding device for a fire box accessory according to the present invention;

[0018] Figure 2 This is a schematic diagram of the welding device for a fire box accessory according to the present invention from another perspective.

[0019] Figure 3 This is a schematic diagram of the positioning ring bracket structure of a welding device for a fire box accessory according to the present invention;

[0020] Figure 4 This is a schematic diagram of the welding displacement mechanism of a welding device for a fire box accessory according to the present invention;

[0021] Figure 5 This is a schematic diagram of the limiting bracket structure of a welding device for a fire box accessory according to the present invention;

[0022] Figure 6 This is a schematic diagram of the workpiece conveying mechanism of a welding device for a fire box accessory according to the present invention;

[0023] Figure 7 This is a schematic diagram of the workpiece rotation mechanism of the welding device for a fire box accessory according to the present invention;

[0024] Figure 8This is a schematic diagram of the workpiece clamping mechanism of the welding device for a fire box accessory according to the present invention;

[0025] Figure 9 This is a cross-sectional view of the workpiece clamping mechanism of a welding device for a fire box accessory according to the present invention.

[0026] The components represented by each number in the attached diagram are listed below: 1. Base; 2. Adjustable bracket; 3. Positioning ring bracket; 4. Limiting bracket; 5. Drive box; 101. Upper clamping platform; 102. Telescopic rod; 201. Drive motor; 202. Drive roller; 203. Follower gear; 204. Drive gear; 301. Moving guide rail; 302. Slide table mounting bracket; 303. Welding torch; 304. Clamping adjustment seat; 305. Component support. Support slide base; 306, Spacing adjustment rod; 307, Guide rod; 401, Self-centering clamping chuck; 402, Slot; 403, Fixing rod; 404, Limiting feeder; 405, Telescopic motor; 406, Connecting flange; 407, Guide slide; 408, Positioning inner hole; 501, Adjusting screw; 502, Workpiece positioning plate; 503, Outer tightness shell; 504, Adjusting connecting rod ring; 505, Movable clamping block; 506, Locking nut. Detailed Implementation

[0027] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0028] like Figures 1-9 The welding device for a fire box accessory shown includes a base 1. An adjustable bracket 2 is fixedly installed on the right side of the upper surface of the base 1. An upper clamping platform 101 is fixedly installed on the upper end of the adjustable bracket 2. A workpiece clamping mechanism is fixedly installed on one side of the upper clamping platform 101. A positioning ring bracket 3 is fixedly installed on the upper surface of the base 1 on the left side of the adjustable bracket 2. A drive box 5 is fixedly installed on the upper surface of the base 1 between the adjustable bracket 2 and the positioning ring bracket 3. A workpiece rotation mechanism is fixedly installed inside the drive box 5. A limit bracket 4 is fixedly installed on the upper surface of the base 1 on the left side of the positioning ring bracket 3. A moving guide rail 301 is fixedly installed on the upper end of the limit bracket 4 and the positioning ring bracket 3. A welding displacement mechanism is slidably installed on the upper end of the moving guide rail 301. A telescopic motor 405 is fixedly installed on one side of the limit bracket 4. A workpiece conveying mechanism is fixedly installed between the telescopic motor 405 and the limit bracket 4.

[0029] like Figure 2 , Figure 7As shown, the workpiece rotation mechanism also includes a drive motor 201 fixedly installed on one side of the drive box 5. The output end of the drive motor 201 passes through the drive box 5 and is fixedly installed on the inner side with a drive transmission gear 204. Two symmetrically arranged drive transmission rollers 202 are rotatably installed inside the drive box 5. Each drive transmission roller 202 is fixedly installed with a follower gear 203 on the side near the drive motor 201. The follower gear 203 meshes with the drive transmission gear 204.

[0030] The welding displacement mechanism also includes a component support slide 305 that is slidably mounted on the upper end of the moving guide rail 301. Symmetrical slide mounting brackets 302 are fixedly mounted on the upper end of the component support slide 305. A set of spacing adjustment rods 306 are fixedly mounted on the inner side of each of the two slide mounting brackets 302. Each pair of adjacent spacing adjustment rods 306 forms a set.

[0031] Each set of spacing adjustment rods 306 is rotatably mounted with a clamping adjustment seat 304, and a welding gun 303 is fixedly mounted between the clamping adjustment seats 304. Two guide rods 307 are symmetrically passed through the two slide table mounting brackets 302.

[0032] The workpiece conveying mechanism also includes a self-centering clamping chuck 401 fixedly installed on the upper end of the limiting bracket 4. Five equally spaced slots 402 are opened on the outer side of the self-centering clamping chuck 401. A positioning inner hole 408 is fixedly installed on the inner side of the self-centering clamping chuck 401. Symmetrical fixing rods 403 are fixedly installed on the rear surface of the limiting bracket 4. A limiting feeder 404 is fixedly installed on the upper end of the fixing rods 403.

[0033] A telescopic motor 405 is fixedly installed on the lower end of one side surface of the limiting feeder 404, and guide grooves 407 are opened on both sides of the limiting feeder 404. A connecting flange 406 is fixedly installed at the output end of the telescopic motor 405, and the connecting flange 406 is slidably installed inside the guide groove 407.

[0034] like Figure 8 , Figure 9 As shown, the workpiece clamping mechanism also includes a telescopic rod 102 fixedly installed on one side surface of the upper clamping platform 101. An adjusting screw 501 is fixedly installed at the output end of the telescopic rod 102. A workpiece positioning plate 502 is sleeved on the outside of the adjusting screw 501. A locking nut 506 is rotatably installed on one side of the adjusting screw 501. An outer clamping shell 503 is rotatably installed on the outside of the adjusting screw 501 between the workpiece positioning plate 502 and the locking nut 506. The outer clamping shell 503 clamps the fire box accessories internally, and works with the telescopic rod 102 to adjust the angle after repeated conveying, and works with other mechanisms to weld workpieces at multiple angles.

[0035] An adjusting link ring 504 is slidably installed on the inner side of the outer tight shell 503. The adjusting link ring 504 is located on the inner side of the outer tight shell 503 and has four movable clamping blocks 505 arranged at equal angles. The movable clamping blocks 505 are movably installed on the inner side of the outer tight shell 503.

[0036] Working Principle: This invention is specifically designed for the automated welding of fire hose reel brackets. With base 1 as the overall support foundation, it utilizes five core mechanisms—adjustable bracket 2, positioning ring bracket 3, limiting bracket 4, and drive box 5—to work in concert. It strictly follows the process of material feeding and positioning, clamping and fixing, angle adjustment, directional feeding, displacement welding, cyclic operation, and finished product removal. This achieves precise docking and uniform welding between the hollow cylindrical shaft and the triangular plate, completely solving the problems of positioning deviation, low efficiency, and insufficient structural stability in traditional welding, and is suitable for mass production needs.

[0037] After the operation starts, the workers first place the hollow cylindrical shaft of the hose reel bracket on the upper end of the drive box 5, and the workpiece rotation mechanism inside the drive box 5 completes the basic lifting. At this time, the workpiece clamping mechanism installed on the upper end of the adjustable bracket 2 starts to move. The telescopic rod 102 on one side of the upper clamping platform 101 moves forward, driving the adjusting screw 501 and the outer clamping shell 503 to extend into the hollow cylindrical shaft. The adjusting connecting rod ring 504 drives the four movable clamping blocks 505 arranged at equal angles to open outward and fit tightly against the inner wall of the hollow shaft. The workpiece positioning plate 502 fits against one end face of the hollow cylindrical shaft for axial limitation, forming a two-way positioning constraint with the subsequent positioning structure. Finally, the locking nut 506 is tightened to lock the clamping state, ensuring that the hollow shaft has no radial displacement or axial loosening during the entire rotation and welding process, and establishing a stable welding reference.

[0038] After the hollow shaft is fixed, the workpiece rotation mechanism starts the angle adjustment: the drive motor 201 runs, and the active transmission gear 204 at its output end rotates. Through gear meshing, it drives the follower gears 203 at the ends of the two symmetrical active transmission rollers 202 to rotate synchronously. The active transmission rollers 202 lift the hollow shaft and rotate it precisely around its own axis, adjusting the hollow shaft to the welding position of the first triangular plate, and completing the welding posture calibration.

[0039] The process then proceeds to the triangular plate loading and directional conveying stage. Workers place five triangular mounting plates sequentially on the limiting feeder 404 at the upper end of the limiting bracket 4, and start the telescopic motor 405 according to preset parameters. The output of the telescopic motor 405 drives the connecting flange 406 to move linearly along the guide grooves 407 on both sides of the limiting feeder 404, smoothly pushing the triangular plates forward. The self-centering clamping chuck 401 circumferentially positions the triangular plates through the outer slot 402, while the inner positioning hole 408 limits the other end face of the hollow cylindrical shaft, forming a bidirectional axial limit with the workpiece positioning disc 502. This ensures the triangular plates are precisely fitted to the designated welding position on the outer surface of the hollow cylindrical shaft, achieving seamless connection.

[0040] After the triangular plate is in place, the welding positioning mechanism immediately performs the welding operation: the component support slide 305 slides along the moving guide rail 301 at the upper end of the positioning ring bracket 3 and the limit bracket 4 to the welding station, the slide mounting bracket 302 drives the welding gun 303 to be precisely positioned, the spacing adjustment rod 306 finely adjusts the height and angle of the welding gun 303, the clamping adjustment seat 304 fixes the posture of the welding gun 303, the guide rod 307 ensures the smooth movement of the mechanism, and after the welding gun 303 is started, the first triangular plate and the hollow shaft are welded together, ensuring that the weld is uniform and the connection is firm.

[0041] After the first triangular plate is welded, the device enters a cyclic welding process: the workpiece clamping mechanism maintains stable clamping, the workpiece rotation mechanism drives the hollow shaft to rotate precisely again, and switches to the next welding station; the telescopic motor 405 synchronously resets and transports the next triangular plate, repeating the fitting and welding operations. During this period, the welding positioning mechanism adjusts its working position according to the station, and completes the welding of five equal-angle triangular plates in sequence, ensuring that the spacing between each triangular plate is uniform and the perpendicularity meets the standard.

[0042] After all five triangular plates are welded, the movable clamping block 505 of the workpiece clamping mechanism retracts, and the telescopic rod 102 retracts to release the clamping of the hollow shaft. The operator then removes the formed water tape reel support through the external material handling mechanism. Subsequently, the hollow cylindrical shaft can be reloaded, and the entire process of clamping, rotating, feeding, and welding can be repeated to achieve continuous and automated batch processing.

[0043] This device integrates four major functions: internal clamping, rotation, feeding, and welding. It uses bidirectional end-face limiting via the workpiece positioning plate 502 and the positioning inner hole 408, combined with precise angle control and automatic feeding welding. All components work together closely and move precisely, perfectly matching the structural characteristics and processing requirements of the hose reel bracket. This significantly improves welding accuracy and product structural stability, while simplifying the operation process and meeting the production safety and mass manufacturing standards for fire protection accessories.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A welding device for fire box accessories, comprising a base (1), characterized in that: An adjustable bracket (2) is fixedly installed on the right side of the upper surface of the base (1). An upper clamping platform (101) is fixedly installed on the upper end of the adjustable bracket (2). A workpiece clamping mechanism is fixedly installed on one side of the upper clamping platform (101). A positioning ring bracket (3) is fixedly installed on the upper surface of the base (1) to the left of the adjustable bracket (2). A drive box (5) is fixedly installed on the upper surface of the base (1) between the adjustable bracket (2) and the positioning ring bracket (3). A workpiece rotating mechanism is fixedly installed inside the drive box (5). A limit bracket (4) is fixedly installed on the upper surface of the base (1) to the left of the positioning ring bracket (3). A moving guide rail (301) is fixedly installed on the upper end of the limit bracket (4) and the positioning ring bracket (3). A welding displacement mechanism is slidably installed on the upper end of the moving guide rail (301). A telescopic motor (405) is fixedly installed on one side of the limit bracket (4). A workpiece conveying mechanism is fixedly installed between the telescopic motor (405) and the limit bracket (4).

2. The welding device for a fire box accessory according to claim 1, characterized in that: The workpiece clamping mechanism further includes a telescopic rod (102) fixedly installed on one side surface of the upper clamping platform (101). An adjusting screw (501) is fixedly installed at the output end of the telescopic rod (102). A workpiece positioning plate (502) is sleeved on the outside of the adjusting screw (501). A locking nut (506) is rotatably installed on one side of the adjusting screw (501). An outer clamping shell (503) is rotatably installed on the outside of the adjusting screw (501) between the workpiece positioning plate (502) and the locking nut (506).

3. The welding device for a fire box accessory according to claim 2, characterized in that: An adjusting link ring (504) is slidably installed on the inner side of the outer tight shell (503). The adjusting link ring (504) is rotatably installed on the inner side of the outer tight shell (503) with four movable clamping blocks (505) arranged at equal angles. The movable clamping blocks (505) are movably installed on the inner side of the outer tight shell (503).

4. The welding device for fire box accessories according to claim 1, characterized in that: The workpiece rotation mechanism also includes a drive motor (201) fixedly installed on one side of the drive box (5). The output end of the drive motor (201) passes through the drive box (5) and is fixedly installed on the inner side with an active transmission gear (204). Two symmetrically arranged active transmission rollers (202) are rotatably installed inside the drive box (5). Each active transmission roller (202) is fixedly installed with a follower gear (203) on the side near the drive motor (201). The follower gear (203) meshes with the active transmission gear (204).

5. The welding device for a fire box accessory according to claim 1, characterized in that: The welding displacement mechanism also includes a component support slide (305) that is slidably mounted on the upper end of the moving guide rail (301). A symmetrical slide mounting bracket (302) is fixedly mounted on the upper end of the component support slide (305). A set of spacing adjustment rods (306) is fixedly mounted on the inner side of each of the two slide mounting brackets (302). Each pair of adjacent spacing adjustment rods (306) forms a set.

6. The welding device for a fire box accessory according to claim 5, characterized in that: Each set of spacing adjustment rods (306) is rotatably mounted with a clamping adjustment seat (304), and a welding gun (303) is fixedly mounted between the clamping adjustment seats (304). Two guide rods (307) are symmetrically passed through between the two slide table mounting brackets (302).

7. The welding device for fire box accessories according to claim 1, characterized in that: The workpiece conveying mechanism also includes a self-centering clamping chuck (401) fixedly installed on the upper end of the limiting bracket (4). The self-centering clamping chuck (401) has five slots (402) arranged at equal angles on its outer side. The self-centering clamping chuck (401) has a positioning inner hole (408) fixedly installed on its inner side. The limiting bracket (4) has symmetrical fixing rods (403) fixedly installed on its rear surface. The upper end of the fixing rods (403) has a limiting feeder (404) fixedly installed.

8. The welding device for a fire box accessory according to claim 7, characterized in that: A telescopic motor (405) is fixedly installed on the lower end of one side surface of the limiting feeder (404), and guide grooves (407) are opened on both sides of the limiting feeder (404). A connecting flange (406) is fixedly installed at the output end of the telescopic motor (405), and the connecting flange (406) is slidably installed inside the guide groove (407).

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