Fire extinguisher bottle welding apparatus and welding method thereof

Abstract

The present application belongs to the technical field of fire extinguisher production, and particularly relates to a fire extinguisher bottle welding device and a welding method thereof, comprising: a base; a sliding assembly; a feeding transmission assembly; a centering crank clamping mechanism composed of four crank clamping assemblies, an external meshing transmission assembly and a turnover assembly, which are respectively used for clamping the fire extinguisher bottle, driving the four crank clamping assemblies to transmit, and rotating the whole of the welded bottle along the horizontal axis; and a welder; the centering crank clamping mechanism is provided, the four crank clamping assemblies adopt the design principle of a crank slider when clamping the welding piece, and the connecting spring is used to realize the pinching and clamping of the welded bottle body, and when the four crank clamping assemblies are aligned, the reserved top block is forced to move backward to drive the crank mechanism in the four crank clamping assemblies to be self-locked, so that the normal pressure at the clamping block is increased to pre-tighten the bottle body again; the centering and alignment of the bottle body are completed at the same time of clamping, and the straightness of the whole bottle body during welding is ensured.

Description

Technical Field

[0001] This invention belongs to the field of fire extinguisher manufacturing technology, and particularly relates to a fire extinguisher cylinder welding equipment and welding method. Background Technology

[0002] Fire extinguisher cylinders are used to store high-pressure carbon dioxide gas or other flame-retardant materials. Because fire extinguisher cylinders are used to store high-pressure gas, their processing usually involves rolling steel plates and welding them to form a cylindrical structure. Then, the two ends of the cylindrical structure are welded and finished to form the bottom and mouth of the cylinder. Therefore, the welding quality requirements during the processing of fire extinguisher cylinders are very high, requiring that the straightness and width of the weld be ensured.

[0003] Patent CN112756830A discloses a welding device for fire extinguisher cylinders, including a working platform with two telescopic rotating devices arranged opposite each other. A bottom clamping component is connected to one telescopic device, and a mouth clamping component is connected to the other. A support is also connected to the working platform, and a first hydraulic cylinder is connected to the support. A bottle cap clamping component is connected to the piston rod of the first hydraulic cylinder, and the bottle cap clamping component cooperates with the mouth clamping component. A through groove is provided on the working platform, and a second hydraulic cylinder is vertically arranged below the working platform. A receiving plate is connected to the piston rod of the second hydraulic cylinder and is disposed within the through groove. The advantages of this invention are: This device splices fire extinguisher cylinders using a receiving plate, bottom clamping component, bottle cap clamping component, and mouth clamping component, and then welds the three joints with a welding torch, effectively improving production efficiency.

[0004] The above-mentioned equipment has the following problems:

[0005] 1. Using suction cups for fixing makes it impossible to guarantee the straightness of the weld;

[0006] 2. Clamping is not possible for welding bottles of different specifications;

[0007] 3. It is impossible to guarantee the alignment of the clamping and centering of the bottle body before welding and the alignment of the welding joint after feeding in the same direction. Summary of the Invention

[0008] The purpose of this invention is to provide a welding device and method for fire extinguisher cylinders, to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: a welding device and method for fire extinguisher cylinders, comprising:

[0009] The base is used for fixing;

[0010] A sliding component, located at the upper end of the base, is used for opposing feed motion;

[0011] The feed transmission assembly is fixedly mounted on the left end wall of the base and is used for the transmission of feed motion;

[0012] The centering crank clamping mechanism has two parts, which are arranged oppositely on the upper end of the sliding assembly;

[0013] The centering crank clamping mechanism consists of three parts: a four-crank clamping assembly, an external meshing transmission assembly, and a rotating assembly. The four-crank clamping assembly is used to clamp the fire extinguisher bottle, the external meshing transmission assembly is used to drive the four-crank clamping assembly to drive, and the rotating assembly is used to drive the four-crank clamping assembly and the external meshing transmission assembly to rotate coaxially on the horizontal axis.

[0014] The welding device is fixedly mounted on the rear end of the upper surface of the base and is used for welding.

[0015] In this technical solution, when welding the fire extinguisher cylinder, the stamped half of the fire extinguisher cylinder is first placed horizontally on the front end of the centering crank clamping mechanism. Then, the external meshing transmission assembly is manually rotated. The external meshing transmission assembly drives the four-crank clamping assembly to open and close through gear transmission. After the four-crank clamping assembly opens and closes, the fire extinguisher cylinder is horizontally inserted into the four-crank clamping assembly. Then, the external meshing transmission assembly is released, and the external meshing transmission assembly automatically drives the four-crank clamping assembly to close, completing the clamping of the fire extinguisher cylinder. The feed transmission assembly is started to drive the sliding assembly to slide in opposite directions until the two half-bottles are aligned, and then the feed transmission assembly is stopped. The turnover assembly is started to drive the four-crank clamping assembly to rotate, and at the same time, the welding machine is started to complete the circumferential welding of the cylinder's mating end.

[0016] In any of the above technical solutions, the four-crank clamping assembly further includes:

[0017] A cylindrical ring block with an internal arc-shaped cavity;

[0018] There are eight guide cylindrical caps, which are fixedly installed on the upper, lower, left and right end walls of the inner end wall of the cylindrical ring block, and guide rods and positioning rods are slidably installed on them respectively;

[0019] The clamping block is fixedly connected to the lower end face of the guide rod;

[0020] A hinged fixing plate is fixedly connected to the lower end face of the positioning rod. The front end is provided with a fixing plate, and the lower end face is provided with an arc-shaped hinge block. The rear end face of the clamping block is fixedly connected to the front end face of the hinged fixing plate.

[0021] There are four connecting rods, each with its upper end hinged to a hinged fixing plate;

[0022] The cross plate has four slots evenly distributed on its outer end, and the lower ends of the connecting rods are respectively hinged to it.

[0023] Compression springs, four in number, are respectively sleeved on the guide rod and fixedly connected between the clamping block and the inner wall of the cylindrical ring block;

[0024] A horizontally guiding cylindrical support plate is fixedly installed at the bottom of the cylindrical ring block, and a cylindrical rod is slidably provided in the middle. The front end of the cylindrical rod is fixedly connected to the rear end of the reserved top block.

[0025] A clamping spring, sleeved on the cylindrical rod, is used to define the initial clamping position of the cross plate.

[0026] In this technical solution, when the four-crank clamping assembly is clamped, the clamping spring is in a compressed state at its original position. The cylindrical rod moves horizontally, and the cylindrical rod slides along the axis of the horizontal guide cylindrical support plate and stretches the clamping spring. At the same time, the cross plate fixedly connected to the cylindrical rod moves horizontally and drives the four connecting rods hinged around it to swing.

[0027] When the connecting rod swings, the clamping block is subjected to the vertical component of the force, causing the positioning rod and the guide rod to slide up along the guide cylinder cap and compress the compression spring until the opening between the four clamping blocks can accommodate the bottle. After the bottle is placed, the four crank clamping assembly resets and completes the clamping under the action of the compression spring and the clamping tension spring.

[0028] In any of the above technical solutions, the external meshing transmission assembly further includes:

[0029] The meshing ring block is fixedly connected to the rear end of the cylindrical ring block, and its cross-section is the same size as that of the cylindrical ring block.

[0030] An extended slot is formed on the left end wall of the meshing ring block;

[0031] The horizontal plate is welded horizontally to the left and right end walls of the extended slot, and is used to fix the external meshing transmission assembly.

[0032] A small-diameter gear is rotatably connected to the middle of the cross plate via a key;

[0033] The transmission rack is fixedly connected to the rear end of the cylindrical rod and meshes with the small-diameter gear for transmission.

[0034] The large-diameter gear is rotatably connected to the left end of the horizontal plate and meshes with the left end of the small-diameter gear for transmission.

[0035] In this technical solution, the large diameter gear is rotated clockwise, which drives the small diameter gear to rotate. Then the small diameter gear rotates counterclockwise and meshes with the transmission rack, causing the transmission rack and the cylindrical rod to slide out along the horizontal guide cylindrical support plate.

[0036] Furthermore, when selecting materials for standard parts, it should be ensured that the number of teeth z1 of the large diameter gear is much greater than the number of teeth z2 of the small diameter gear, so as to ensure that the small diameter gear can be rotated when the rotation amplitude of the large diameter gear is not large, so as to achieve easy adjustment of the horizontal movement distance of the cylindrical rod in the four-crank clamping assembly.

[0037] In any of the above technical solutions, the four-crank clamping assembly further includes:

[0038] The replacement slot is fixedly opened at the lower end of the clamping block, and a fixing hole is provided at its top.

[0039] The flexible fitting block can be embedded in the replacement slot. Two screw cylindrical pins are fixedly provided on its upper end face. Tension springs are sleeved on the screw cylindrical pins, and the upper end of the screw cylindrical pins is fixed to the upper end of the clamping block by a nut.

[0040] In this technical solution, when the diameter of the welded bottle changes, in order to ensure the clamping at the four-crank clamping assembly, the flexible bonding block is replaced so that the curvature of the lower end face of the flexible bonding block matches the curvature of the clamped bottle, thus ensuring the stability of the clamping.

[0041] In any of the above technical solutions, the four-crank clamping assembly further includes: a reserved top block, threadedly connected to the front end face of the cross plate, with its front end in the shape of an arc disc, which contacts the bottom of the bottle to be welded during bottle welding and achieves self-locking of the mechanism when the bottles are joined. In this technical solution, the reserved top block is replaced at the same time as the flexible bonding block is replaced; when the lower arc surface of the flexible bonding block is horizontally pressed against the bottle, the front end of the reserved top block is positioned at the rear end of the tension spring to avoid the reserved top block being too long and contacting the bottom of the bottle too early, which would prevent the tension spring from clamping the bottle around its perimeter; at the same time, when the four-crank clamping assembly is aligned, the reserved top block is forced to move backward, driving the crank mechanism inside the four-crank clamping assembly to self-lock, forcing an increase in the positive pressure at the clamping block and performing secondary pre-tightening on the clamping parts.

[0042] In any of the above technical solutions, the external meshing transmission assembly further includes:

[0043] A frustum of cones is fixedly connected to the upper end face of the large-diameter gear.

[0044] There are six pins, evenly distributed on the ring end face of the frustum, used to drive the large-diameter gear for meshing transmission.

[0045] The handle for opening and closing can be fitted onto a pin at the front end, allowing for manual rotation of the pin.

[0046] In this technical solution, when the external meshing transmission component is driven, the opening and closing rotating handle is inserted into the pin and manually rotated to drive the frustum and the large diameter gear to rotate and mesh.

[0047] In any of the above technical solutions, the turnover component further includes:

[0048] The rotating shaft is rotatably connected at its right end to the left end of the base, while the left end is fixedly connected to the driven gear.

[0049] A connecting cylindrical ring block is fixedly connected to the right end of the driven gear. The ring end has a slot to facilitate oil lubrication of the transmission rack.

[0050] The rotating motor is fixedly mounted on the left end wall of the base, and the right end is fixedly connected to the drive gear, which meshes with the driven gear for transmission.

[0051] In this technical solution, after the sliding assembly completes the docking of the welding bottle body, the rotating motor is started, which drives the active gear and the driven gear to achieve horizontal rotation of the rotating shaft, thereby driving the four-crank clamping assembly to rotate and carry out the pre-welding work of the ring end welding.

[0052] In any of the above technical solutions, the external meshing transmission assembly further includes:

[0053] The through groove is located at the rear end arm of the meshing ring block. When the transmission rack is in the initial position, the top end of the through groove extends out of the through groove to remove the obstruction to the horizontal feed of the through groove.

[0054] In this technical solution, when the transmission rack moves horizontally, the end of the circular groove is placed at the outer end of the transmission rack, which facilitates the movement of the transmission rack and also facilitates oil lubrication of the transmission rack.

[0055] In any of the above technical solutions, the sliding component further includes:

[0056] The guide platform is fixedly connected to the middle of the upper surface of the base, and has a horizontally opened slide groove inside.

[0057] Two sliders are slidably connected in a groove.

[0058] Fixed support plates are fixedly connected to the upper end of the slider;

[0059] Threaded holes are respectively opened in the middle of the fixed plate, and the threads of the two fixed plates are opposite in direction.

[0060] In this technical solution, two threaded holes with opposite thread directions are provided to facilitate the opposite feeding action of the two sliding components at the upper end face of the base, and to complete the alignment and fitting action of the clamping parts at the two four-crank clamping components.

[0061] The feed drive assembly includes:

[0062] A torque motor is fixedly connected to the left end wall of the base, and a drive pulley is fixedly mounted on it;

[0063] The transmission lead screw is rotatably connected at its right end to the right end wall of the base, and its middle part is threadedly connected to two threaded holes.

[0064] The driven pulley is fixedly connected to the left end of the transmission screw and rotates on the same axis as the transmission screw;

[0065] A drive belt connects the driving pulley and the driven pulley for power transmission.

[0066] In this technical solution, when the sliding components move in opposite directions, the torque motor is started. The torque motor drives the active pulley to rotate, and drives the driven pulley to rotate through the transmission belt. The rotation of the driven pulley drives the transmission screw to drive the two threaded holes, thereby realizing the opposite feeding and separation movements of the two sliding components.

[0067] Furthermore, the belt drive has overload protection. When the four-crank clamping assembly completes its normal operation, the torque at the torque motor changes abruptly, and the torque motor stops. The belt drive transforms this torque change at the torque motor into a linear, flexible change, thus extending the service life of the torque motor.

[0068] The welder is fixedly connected to the rear end of the upper wall of the sliding assembly and is used for welding the fire extinguisher bottle at the clamping point of the four-crank clamping assembly.

[0069] In this technical solution, when the turnover component rotates the aligned bottle, the welding device completes the welding of the bottle body at the contact joint.

[0070] The welding method of the above-described fire extinguisher cylinder welding equipment includes the following steps:

[0071] Step 1: Attach the opening and closing handle to the pin and turn the opening and closing handle clockwise. At this time, the external meshing transmission component engages and drives the four crank clamping component to swing open and close.

[0072] Step 2: When the opening and closing handle is manually turned, the four clamping blocks of the four-crank clamping assembly open, and the welded bottle is placed into the left and right four-crank clamping assemblies. When the opening and closing handle is released, the four-crank clamping assembly automatically clamps the bottle.

[0073] Step 3: Start the feed transmission assembly. The feed transmission assembly drives the sliding assembly to move in opposite directions until the two clamped bottles are aligned. After alignment, stop the feed transmission assembly.

[0074] Step 4: Start the turnover assembly and welding machine. The turnover assembly drives the aligned bottle to rotate horizontally. At this time, the welding machine will weld the aligned bottle seam. After the bottle has rotated once, the welding is completed. At this time, stop the turnover assembly and wait for the weld to cool down. Then, flip the handle to open and close to complete the unloading.

[0075] The beneficial effects of this invention are as follows: By setting up a centering crank clamping mechanism, when clamping the welded parts, the four-crank clamping assembly adopts the design principle of crank slider and, through the connecting spring, realizes the pinching and clamping of the welded bottle body. At the same time, when the four-crank clamping assembly is aligned, the reserved top block is forced to move backward, driving the crank mechanism inside the four-crank clamping assembly to self-lock, forcing the positive pressure at the clamping block to increase, and performing secondary pre-tightening on the bottle body; while clamping, the centering and alignment of the bottle body are completed, ensuring the processing dimensions of the entire bottle body during welding. Attached Figure Description

[0076] Figure 1 This is a schematic diagram of the appearance of the present invention;

[0077] Figure 2 This is a rear view of the present invention;

[0078] Figure 3 This is a schematic diagram of the sliding component in this invention;

[0079] Figure 4 This is a schematic diagram of the centering crank clamping mechanism in this invention;

[0080] Figure 5 This is a schematic diagram of the overall structure of the four-crank clamping assembly in this invention;

[0081] Figure 6 This is an enlarged schematic diagram of the four-crank clamping assembly structure in this invention;

[0082] Figure 7 This is the main intention of the four-crank clamping assembly in this invention;

[0083] Figure 8 This is a schematic diagram of the assembly structure of the flexible bonding block in this invention;

[0084] Figure 9 This is a schematic diagram of the external meshing transmission assembly in this invention;

[0085] Figure 10 This is a schematic diagram of the structure of the turnover component in this invention;

[0086] Figure 11 This is a schematic diagram of the connection between the external meshing transmission component and the rotating component in this invention.

[0087] The attached figures are labeled as follows: (100, base; 200, sliding assembly; 201, guide platform; 202, slide groove; 203, slider; 204, fixed support plate; 205, threaded hole; 300, feed transmission assembly; 301, torque motor; 302, driving pulley; 303, driven pulley; 304, transmission belt; 305, transmission screw; 400, centering crank clamping mechanism; 500, four-crank clamping assembly; 501, cylindrical ring block; 502, guide cylindrical cap; 503, guide rod; 504, positioning rod; 505, clamping block; 506, hinged fixing plate; 507, connecting rod; 508, cross plate; 509, reserved top block; 510, compression spring; 51... 1. Replacement slot; 512. Fixing hole; 513. Flexible bonding block; 514. Screw cylindrical pin; 515. Tension spring; 516. Horizontal guide cylindrical support plate; 517. Cylindrical rod; 518. Clamping tension spring; 600. External meshing transmission assembly; 601. Meshing ring block; 602. Outward extension slot; 603. Horizontal plate; 604. Small diameter gear; 605. Transmission rack; 606. Large diameter gear; 607. Frustum; 608. Pin; 609. Round through slot; 610. Opening and closing rotating handle; 700. Turning assembly; 701. Turning shaft; 702. Driven gear; 703. Connecting cylindrical ring block; 704. Rotating motor; 705. Driving gear; 800. Welding device. Detailed Implementation

[0088] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0089] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0090] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0091] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0092] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or further includes...

[0093] The term "includes" refers to elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "includes a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0094] Example 1:

[0095] like Figure 1 Figure 2 As shown, this embodiment provides a fire extinguisher cylinder welding device, including:

[0096] Base 100, used for fixing;

[0097] The sliding component 200 is disposed on the upper end of the base 100 and is used for opposing feed motion;

[0098] The feed transmission assembly 300 is fixedly mounted on the left end wall of the base 100 and is used for the transmission of feed motion;

[0099] The centering crank clamping mechanism 400 has two parts, which are arranged opposite to each other on the upper end of the sliding assembly 200;

[0100] The centering crank clamping mechanism 400 consists of three parts: a four-crank clamping assembly 500, an external meshing transmission assembly 600, and a turnover assembly 700. The four-crank clamping assembly 500 is used to clamp the fire extinguisher bottle, the external meshing transmission assembly 600 is used to drive the four-crank clamping assembly 500 to drive, and the turnover assembly 700 is used to drive the four-crank clamping assembly 500 and the external meshing transmission assembly 600 to rotate coaxially on the horizontal axis.

[0101] The welding device 800 is fixedly mounted on the rear end of the upper surface of the base 100 and is used for welding.

[0102] In this technical solution, when welding the fire extinguisher cylinder, the stamped half of the fire extinguisher cylinder is first placed horizontally at the front end of the centering crank clamping mechanism 400. Then, the external meshing transmission assembly 600 is manually rotated. The external meshing transmission assembly 600 drives the four-crank clamping assembly 500 to open and close through gear transmission. After the four-crank clamping assembly 500 opens and closes, the fire extinguisher cylinder is horizontally inserted into the four-crank clamping assembly 500. Then, the external meshing transmission assembly 600 is released, and the external meshing transmission assembly 600 automatically drives the four-crank clamping assembly 500 to close, completing the clamping of the fire extinguisher cylinder. The feed transmission assembly 300 is started to drive the sliding assembly 200 to slide in opposite directions until the two half of the cylinder are aligned. The feed transmission assembly 300 is then stopped. The turnover assembly 700 is started to drive the four-crank clamping assembly 500 to rotate, and at the same time, the welder 800 is started to complete the circumferential welding of the cylinder's mating end.

[0103] like Figures 3-7 As shown, in this embodiment, specifically, the four-crank clamping assembly 500 includes:

[0104] Cylindrical ring block 501, with an internal arc cavity;

[0105] There are eight guide cylindrical caps 502, which are respectively fixedly installed on the upper, lower, left and right end walls of the inner end wall of the cylindrical ring block 501, and guide rods 503 and positioning rods 504 are slidably installed on them respectively.

[0106] The clamping block 505 is fixedly connected to the lower end face of the guide rod 503;

[0107] The hinged fixing plate 506 is fixedly connected to the lower end face of the positioning rod 504, with a fixing plate at the front end and an arc-shaped hinge block at the lower end face; and the rear end face of the clamping block 505 is fixedly connected to the front end face of the hinged fixing plate 506.

[0108] There are four connecting rods 507, each hinged at the upper end to the hinge fixing plate 506.

[0109] The cross plate 508 has four slots evenly provided on its outer end, and the lower end of the connecting rod 507 is hinged to it respectively.

[0110] Compression springs 510, four in number, are respectively sleeved on guide rods 503 and fixedly connected between clamping block 505 and inner wall of cylindrical ring block 501;

[0111] A horizontal guide cylindrical support plate 516 is fixedly installed at the bottom of the cylindrical ring block 501, and a cylindrical rod 517 is slidably provided in the middle. The front end of the cylindrical rod 517 is fixedly connected to the rear end of the reserved top block 509.

[0112] A clamping spring 518 is sleeved on the cylindrical rod 517 to limit the initial clamping position of the cross plate 508.

[0113] In this technical solution, when the four-crank clamping assembly 500 is clamped, the clamping spring 518 is in a compressed state in its original position. The cylindrical rod 517 moves horizontally, and the cylindrical rod 517 slides along the axis of the horizontal guide cylindrical support plate 516 and stretches the clamping spring 518. At the same time, the cross plate 508, which is fixedly connected to the cylindrical rod 517, moves horizontally and drives the four connecting rods 507 hinged around it to swing.

[0114] When the connecting rod 507 swings, the clamping block 505 is subjected to a vertical component force, causing the positioning rod 504 and the guide rod 503 to slide up along the guide cylindrical cap 502 and compress the compression spring 510 until the opening between the four clamping blocks 505 can accommodate the bottle. After the bottle is placed, under the elastic force of the compression spring 510 and the clamping tension spring 518, the four crank clamping assembly 500 resets and completes the clamping.

[0115] Example 2:

[0116] This embodiment provides a fire extinguisher bottle welding device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0117] like Figure 9 As shown, in this embodiment, specifically, the external meshing transmission assembly 600 includes:

[0118] The meshing ring block 601 is fixedly connected to the rear end of the cylindrical ring block 501, and its cross-section is the same size as that of the cylindrical ring block 501.

[0119] An extended slot 602 is formed on the left end wall of the meshing ring block 601;

[0120] A horizontal plate 603 is welded horizontally to the left and right end walls of the extended slot 602 for fixing the external meshing transmission assembly 600.

[0121] The small diameter gear 604 is rotatably connected to the middle of the cross plate 603 by a key;

[0122] The transmission rack 605 is fixedly connected to the rear end of the cylindrical rod 517 and meshes with the small diameter gear 604 for transmission.

[0123] The large diameter gear 606 is rotatably connected to the left end of the horizontal plate 603 and meshes with the left end of the small diameter gear 604 for transmission.

[0124] In this technical solution, the large diameter gear 606 is rotated clockwise, which drives the small diameter gear 604 to rotate. Then, the small diameter gear 604 rotates counterclockwise and meshes with the transmission rack 605, which drives the transmission rack 605 and the cylindrical rod 517 to slide out along the horizontal guide cylindrical support plate 516.

[0125] Furthermore, when selecting materials for standard parts, it should be ensured that the number of teeth z1 of the large diameter gear 606 is much greater than the number of teeth z2 of the small diameter gear 604, so as to ensure that the small diameter gear 604 can complete its rotation when the rotation amplitude of the large diameter gear 606 is not large, so as to achieve easy adjustment of the horizontal movement distance of the cylindrical rod 517 in the four-crank clamping assembly 500.

[0126] Example 3:

[0127] This embodiment provides a fire extinguisher bottle welding device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0128] like Figure 8 As shown, in this embodiment, specifically, the four-crank clamping assembly 500 includes:

[0129] Replacement slot 511 is fixedly opened at the lower end of clamping block 505, and its top end is provided with fixing hole 512;

[0130] The flexible fitting block 513 can be embedded in the replacement groove 511. Two screw cylindrical pins 514 are fixedly provided on its upper end face. Tension springs 515 are sleeved on the screw cylindrical pins 514, and the upper end of the screw cylindrical pins 514 is fixed to the upper end of the clamping block 505 by a nut.

[0131] In this technical solution, when the diameter of the welded bottle changes, in order to ensure the clamping at the four-crank clamping assembly 500, the flexible bonding block 513 is replaced so that the curvature of the lower end face of the flexible bonding block 513 matches the curvature of the clamped bottle, thus ensuring the stability of the clamping.

[0132] like Figure 5 As shown, in this embodiment, specifically, the four-crank clamping assembly 500 further includes:

[0133] The reserved top block 509 is threadedly connected to the front end face of the cross plate 508. Its front end is in the shape of an arc disk. It contacts the bottom of the bottle to be welded during bottle welding and achieves self-locking of the mechanism when the bottles are joined.

[0134] In this technical solution, the flexible bonding block 513 is replaced while the reserved top block 509 is replaced; when the lower arc surface of the flexible bonding block 513 is horizontally attached to the bottle, the front end of the reserved top block 509 is positioned at the rear end of the tension spring 515 to avoid the reserved top block 509 being too long and prematurely contacting the bottom of the bottle, thus preventing the tension spring 515 from clamping the bottle around its perimeter; at the same time, when the four-crank clamping assembly 500 is aligned, the reserved top block 509 is forced to move backward, driving the crank mechanism inside the four-crank clamping assembly 500 to self-lock, forcing the positive pressure at the clamping block 505 to increase, and performing secondary pre-tightening on the clamp.

[0135] Example 4:

[0136] This embodiment provides a fire extinguisher bottle welding device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0137] like Figure 9 Figure 10 As shown, in this embodiment, specifically, the external meshing transmission assembly 600 further includes:

[0138] The frustum 607 is fixedly connected to the upper end face of the large-diameter gear 606.

[0139] There are six pins 608, which are evenly distributed on the ring end face of the frustum 607 and are used to drive the large diameter gear 606 to perform meshing transmission.

[0140] The opening and closing rotating handle 610 has its front end fitted onto the pin 608, which is used to manually drive the pin 608 to rotate.

[0141] In this technical solution, when the external meshing transmission assembly 600 is driven, the opening and closing rotating handle 610 is inserted into the pin 608 and manually rotated to drive the frustum 607 and the large diameter gear 606 to rotate and mesh.

[0142] Example 5:

[0143] This embodiment provides a fire extinguisher bottle welding device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0144] like Figure 11 As shown, in this embodiment, specifically, the turnover component 700 includes:

[0145] The rotating shaft 701 is rotatably connected at its right end to the left end of the base 100, and its left end is fixedly connected to the driven gear 702.

[0146] The connecting cylindrical ring block 703 is fixedly connected to the right end of the driven gear 702. The ring end is provided with a groove to facilitate the oil lubrication of the transmission rack 605.

[0147] The rotating motor 704 is fixedly installed on the left end wall of the base 100, and the right end is fixedly connected to the drive gear 705. The drive gear 705 meshes with the driven gear 702 for transmission.

[0148] In this technical solution, after the sliding component 200 completes the docking of the welding bottle, the rotating motor 704 is started, which drives the active gear 705 and the driven gear 702 to achieve the horizontal rotation of the rotating shaft 701, which in turn drives the four-crank clamping component 500 to rotate, and performs the pre-welding work of the ring end welding.

[0149] like Figure 11 As shown, in this embodiment, specifically, the external meshing transmission assembly 600 includes:

[0150] A through groove 609 is provided at the rear end arm of the meshing ring block 601. When the transmission rack 605 is in the initial position, the top end extends from the through groove 609 to remove the horizontal feed obstruction of the through groove 609.

[0151] In this technical solution, when the transmission rack 605 moves horizontally, the end of the through groove 609 is placed at the outer end of the transmission rack 605, which facilitates the movement of the transmission rack 605 and also facilitates oil lubrication of the transmission rack 605.

[0152] Example 6:

[0153] This embodiment provides a fire extinguisher bottle welding device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0154] like Figure 3 As shown, in this embodiment, specifically, the sliding component 200 includes:

[0155] The guide platform 201 is fixedly connected to the middle of the upper end face of the base 100, and has a horizontally opened slide groove 202 inside.

[0156] Two sliders 203 are slidably connected in the slide groove 202;

[0157] The fixed support plate 204 is fixedly connected to the upper end of the slider 203;

[0158] Threaded holes 205 are respectively opened in the middle of the fixed support plate 204, and the threads of the two fixed support plates 204 are opposite.

[0159] In this technical solution, two threaded holes 205 with opposite thread directions are provided to facilitate the opposite feeding action of the two sliding components 200 at the upper end face of the base 100, and to complete the alignment and fitting action of the clamping parts at the two four-crank clamping components 500.

[0160] Example 7:

[0161] This embodiment provides a fire extinguisher bottle welding device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0162] like Figure 2 As shown, in this embodiment, specifically, the feed transmission assembly 300 includes: a torque motor 301, which is fixedly connected to the left end wall of the base 100, and a drive pulley 302 is fixedly mounted on it;

[0163] The transmission screw 305 is rotatably connected at its right end to the right end wall of the base 100, and its middle part is threadedly connected to two threaded holes 205.

[0164] Driven pulley 303 is fixedly connected to the left end of transmission screw 305 and rotates on the same axis as transmission screw 305;

[0165] The transmission belt 304 connects the driving pulley 302 and the driven pulley 303 for transmission.

[0166] In this technical solution, when the sliding components 200 move in opposite directions, the torque motor 301 is started. The torque motor 301 drives the driving pulley 302 to rotate, and drives the driven pulley 303 to rotate through the transmission belt 304. The rotation of the driven pulley 303 drives the transmission screw 305 to drive the two threaded holes 205 to achieve the opposite feeding and separation movements of the two sliding components 200.

[0167] Furthermore, the belt drive has overload protection. When the four-crank clamping assembly 500 completes its positive operation, the torque at the torque motor 301 changes abruptly, and the torque motor 301 stops. The belt drive transforms the torque change at the torque motor 301 into a linear and flexible change, thus extending the service life of the torque motor 301.

[0168] Example 8:

[0169] This embodiment provides a fire extinguisher bottle welding device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0170] like Figure 1As shown, in this embodiment, specifically, the welder 800 is fixedly connected to the rear end of the upper wall of the sliding assembly 200 and is used for welding the fire extinguisher bottle at the clamping point of the four-crank clamping assembly 500.

[0171] In this technical solution, when the turnover component 700 rotates on the aligned bottle, the welder 800 completes the welding of the bottle body at the contact point.

[0172] The welding method of the above-described fire extinguisher cylinder welding equipment includes the following steps:

[0173] Step 1: Snap the opening and closing handle 610 into the pin 608, and rotate the opening and closing handle 610 clockwise. At this time, the external meshing transmission component 600 engages and drives the four crank clamping component 500 to open and close.

[0174] Step 2: When the opening and closing handle 610 is manually turned, the four clamping blocks 505 of the four-crank clamping assembly 500 open, and the welded bottle is placed into the left and right four-crank clamping assemblies 500. When the opening and closing handle 610 is released, the four-crank clamping assembly 500 automatically clamps the bottle.

[0175] Step 3: Start the feed transmission assembly 300. The feed transmission assembly 300 drives the sliding assembly 200 to move in opposite directions until the two clamped bottles are aligned. After alignment, stop the feed transmission assembly 300. Step 4: Start the turnover assembly 700 and the welder 800. The turnover assembly 700 drives the aligned bottles to rotate horizontally. At this time, the welder 800 will weld the weld seam of the aligned bottles. After the bottles have rotated one revolution, the welding is completed. At this time, stop the turnover assembly 700. After the weld has cooled, flip and turn the handle 610 to complete the unloading.

[0176] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A welding device for fire extinguisher cylinders, characterized in that, include: Base (100), for fixing; A sliding component (200) is disposed on the upper end of the base (100) for opposing feed motion; The feed transmission assembly (300) is fixedly mounted on the left end wall of the base (100) and is used for the transmission of feed motion; Two centering crank clamping mechanisms (400) are arranged opposite each other on the upper end of the sliding assembly (200); The centering crank clamping mechanism (400) consists of three parts: a four-crank clamping assembly (500), an external meshing transmission assembly (600), and a turnover assembly (700). The four-crank clamping assembly (500) is used to clamp the fire extinguisher bottle, the external meshing transmission assembly (600) is used to drive the four-crank clamping assembly (500) to drive, and the turnover assembly (700) is used to drive the four-crank clamping assembly (500) and the external meshing transmission assembly (600) to rotate coaxially on the horizontal axis. A welding device (800) is fixedly mounted on the rear end of the upper end face of the base (100) and is used for welding; The four-crank clamping assembly (500) includes: Cylindrical ring block (501) with an arc cavity inside; Eight guide cylindrical caps (502) are fixedly installed on the upper, lower, left and right end walls of the inner end wall of the cylindrical ring block (501), and guide rods (503) and positioning rods (504) are slidably installed on them respectively. The clamping block (505) is fixedly connected to the lower end face of the guide rod (503); A hinged fixing plate (506) is fixedly connected to the lower end face of the positioning rod (504), with a fixing plate at the front end and an arc-shaped hinge block at the lower end face; and the rear end face of the clamping block (505) is fixedly connected to the front end face of the hinged fixing plate (506). There are four connecting rods (507), and their upper ends are respectively hinged to the hinge fixing plate (506); The cross plate (508) has four slots evenly provided on its outer end, and the lower end of the connecting rod (507) is respectively hinged to it; A horizontal guide cylindrical support plate (516) is fixedly installed at the bottom of the cylindrical ring block (501), and a cylindrical rod (517) is slidably provided in the middle. The front end of the cylindrical rod (517) is fixedly connected to a reserved top block (509). A clamping spring (518) is sleeved on the cylindrical rod (517) to define the initial clamping position of the cross plate (508).

2. The fire extinguisher bottle welding equipment according to claim 1, characterized in that, The external meshing transmission assembly (600) includes: The meshing ring block (601) is fixedly connected to the rear end of the cylindrical ring block (501), and its cross-section is the same size as that of the cylindrical ring block (501). An extended slot (602) is formed on the left end wall of the meshing ring block (601); A horizontal plate (603) is horizontally welded to the left and right end walls of the extended slot (602) for fixing the external meshing transmission assembly (600); A small diameter gear (604) is rotatably connected to the middle of the cross plate (603) by a key; The transmission rack (605) is fixedly connected to the rear end of the cylindrical rod (517) and meshes with the small diameter gear (604) for transmission. The large diameter gear (606) is rotatably connected to the left end of the cross plate (603) and meshes with the left end of the small diameter gear (604) for transmission.

3. The fire extinguisher bottle welding equipment according to claim 2, characterized in that, The four-crank clamping assembly (500) includes: A replacement slot (511) is fixedly provided at the lower end of the clamping block (505), and a fixing hole (512) is provided at its top end; The flexible fitting block (513) can be embedded in the replacement groove (511). Two screw cylindrical pins (514) are fixedly provided on its upper end face. A tension spring (515) is sleeved on the screw cylindrical pin (514), and the upper end of the screw cylindrical pin (514) is fixed to the upper end of the clamping block (505) by a nut.

4. The fire extinguisher bottle welding equipment according to claim 3, characterized in that, The four-crank clamping assembly (500) also includes: The reserved top block (509) is threaded to the front end face of the cross plate (508). Its front end is in the shape of an arc disk. It contacts the bottom of the bottle to be welded during bottle welding and realizes the mechanism self-locking when the bottles are joined.

5. The fire extinguisher bottle welding equipment according to claim 4, characterized in that, The external meshing transmission assembly (600) further includes: The frustum (607) is fixedly connected to the upper end of the large-diameter gear (606). Six pins (608) are evenly distributed on the ring end face of the frustum (607) for driving the large diameter gear (606) to mesh and transmit power. The opening and closing rotating handle (610) has its front end fitted onto the pin (608) for manually rotating the pin (608).

6. The fire extinguisher bottle welding equipment according to claim 5, characterized in that, The turnover component (700) includes: A rotating shaft (701) is rotatably connected at its right end to the left end of the base (100), and a driven gear (702) is fixedly connected at its left end. A connecting cylindrical ring block (703) is fixedly connected to the right end of the driven gear (702). The ring end is provided with a slot to facilitate the oil lubrication of the transmission rack (605). A rotating motor (704) is fixedly installed on the left end wall of the base (100), and a drive gear (705) is fixedly connected to the right end. The drive gear (705) meshes with the driven gear (702) for transmission.

7. The fire extinguisher bottle welding equipment according to claim 6, characterized in that, The external meshing transmission assembly (600) includes: A through groove (609) is provided at the rear end arm of the meshing ring block (601). The top end of the transmission rack (605) extends from the through groove (609) in the initial position to remove the horizontal feed obstruction of the through groove (609).

8. The fire extinguisher bottle welding equipment according to claim 7, characterized in that, The sliding component (200) includes: The guide platform (201) is fixedly connected to the middle of the upper end face of the base (100), and has a horizontally opened slide groove (202) inside. Two sliders (203) are slidably connected in the groove (202); Fixed support plates (204) are fixedly connected to the upper end of the slider (203); Threaded holes (205) are respectively opened in the middle of the fixed support plate (204), and the threads of the two fixed support plates (204) are opposite in direction; The feed transmission assembly (300) includes: A torque motor (301) is fixedly connected to the left end wall of the base (100), and a drive pulley (302) is fixedly mounted on it; The transmission screw (305) is rotatably connected at its right end to the right end wall of the base (100), and its middle part is threadedly connected to the two threaded holes (205). The driven pulley (303) is fixedly connected to the left end of the transmission screw (305) and rotates on the same axis as the transmission screw (305); A drive belt (304) connects the driving pulley (302) and the driven pulley (303) for transmission; The welder (800) is fixedly connected to the rear end of the upper wall of the sliding assembly (200) and is used for welding the fire extinguisher bottle at the clamping point of the four-crank clamping assembly (500).

9. A welding method for the welding equipment used in any one of claims 5-8 for welding fire extinguisher cylinders, characterized in that: Step 1: Snap the opening and closing rotating handle (610) into the pin (608) and rotate the opening and closing rotating handle (610) clockwise. At this time, the external meshing transmission assembly (600) meshes and drives the four crank clamping assembly (500) to open and close. Step 2: When the opening and closing handle (610) is manually turned, the four clamping blocks (505) of the four-crank clamping assembly (500) open, and the welded bottle is placed into the left and right four-crank clamping assemblies (500). When the opening and closing handle (610) is released, the four-crank clamping assembly (500) automatically clamps the bottle. Step 3: Start the feed transmission assembly (300). The feed transmission assembly (300) drives the sliding assembly (200) to move in opposite directions until the two clamped bottles are aligned. After alignment, stop the feed transmission assembly (300). Step 4: Start the turnover component (700) and the welder (800). The turnover component (700) drives the aligned bottle to rotate horizontally. At this time, the welder (800) will weld the aligned bottle seam. After the bottle rotates once, the welding is completed. At this time, stop the turnover component (700). After the welded area cools down, flip the handle (610) to complete the unloading.

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