Metal filter cartridge welding apparatus

Abstract

A metal filter core welding equipment includes clamping positioning mechanism, welding mechanism, straight seam welding positioning mechanism, the straight seam welding positioning mechanism is detachably installed below the clamping positioning mechanism, and includes a support rod, a connecting rod, an adjusting nut, a locking rod and a locking nut. One end of the connecting rod is hinged to the support rod, and the other end passes through a gap and is threadedly connected to the adjusting nut. The adjusting nut is located above the two clamping plates and is limitedly connected thereto. One end of the locking rod is detachably connected to the support rod, and the other end passes through a gap and is threadedly connected to the locking nut. The locking nut is located above the two clamping plates and is limitedly connected thereto. With the above scheme, the straight seam welding positioning mechanism is convenient to disassemble and assemble. The clamping positioning mechanism can be used for positioning and clamping the folded filter screen to facilitate joint welding, and can be used for positioning and clamping the filter core framework in cooperation with the straight seam welding positioning mechanism to facilitate straight seam full welding, thereby achieving the purpose of one machine with two functions, reducing equipment cost and reducing site occupation area.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, in particular to a metal filter core welding equipment. BACKGROUND

[0002] Metal stainless steel filter core refers to a filter core made of metal stainless steel material. According to the shape of the filter screen, the stainless steel filter core usually includes a folded screen stainless steel filter core, a flat screen stainless steel filter core, etc.

[0003] Among them, the structure of the folded screen stainless steel filter core usually includes an inner framework, a folded filter screen, an end cover, a joint, etc. For example, a kind of filter core high-efficiency high-quality processing method (CN113770656B) discloses a processing method of a stainless steel folded filter core, which includes steps of making a filter core framework, making a filter group, and installing an end cover, etc. Among them, the filter core framework is formed by rolling and welding the framework plate, and the folded filter screen is formed by processing the stainless steel filter screen through wave folding, jointing the head and tail, and closing the opening, etc.

[0004] In the jointing process of the folded filter screen, a seam welding machine or a jointing welding equipment is usually used for jointing welding, wherein the jointing welding equipment includes a clamping positioning device and a welding head, the clamping positioning device includes two clamps on the workbench plate, the two clamps are oppositely arranged, and under the action of the driving device, the two clamps reciprocate to realize clamping and loosening of the two ends of the filter screen. During welding, the first end and the second end of the filter screen are fixed and clamped by the clamping positioning device, then the excess filter screen is cut off by the limiting clamping strip and the cutting knife, and finally the welding head automatically walks to continuously weld the filter screen to realize jointing. However, the jointing welding equipment can generally only be used for jointing welding of the folded filter screen.

[0005] When the filter core framework is formed, the framework plate also needs to be continuously welded after being rolled to realize full welding of the straight seam. The framework straight seam welding can usually be realized by a conventional automatic welding machine for straight seam of a circular pipe, which usually includes a positioning clamp and a welding head. The framework is positioned by the positioning clamp, and then the welding head automatically walks to realize continuous welding.

[0006] In addition to the folded screen stainless steel filter core, the framework of the flat screen stainless steel filter core is also formed by straight seam welding after the framework plate is rolled.

[0007] The jointing welding equipment and the automatic welding machine for straight seam of a circular pipe are usually two different devices. For a stainless steel filter core manufacturer, this not only requires more equipment investment, but also requires more space for multiple devices. SUMMARY

[0008] In order to overcome the shortcomings of the background art, the present application provides a metal filter core welding equipment.

[0009] The technical scheme employed by the present application is: a metal filter core welding device, comprising a rack, wherein the rack is provided with:

[0010] The clamping positioning mechanism comprises two front and rear corresponding clamping plates, a gap is formed between the two clamping plates, at least one of the two clamping plates is capable of moving forward and backward, and is connected with a power source capable of driving it to move forward and backward, and the clamping positioning mechanism is used for clamping and positioning the joint of the folded filter screen;

[0011] The welding mechanism comprises a horizontal linear module and a welding gun mounted on the horizontal linear module, the horizontal linear module is arranged in parallel with the gap, and the welding gun is aligned with the gap, and the welding mechanism is used for continuous automatic welding in the linear direction of the gap;

[0012] The straight seam welding positioning mechanism is used for welding positioning of the filter core framework, and is detachably mounted below the clamping positioning mechanism, and comprises:

[0013] The support rod is arranged below the two clamping plates and is aligned with the gap;

[0014] The connecting rod is hingedly connected to one end of the support rod, and the other end of the connecting rod passes through the gap;

[0015] The adjusting nut is threadedly connected to the connecting rod, and the adjusting nut is located above the two clamping plates and is limitedly matched with the two clamping plates;

[0016] The locking rod is detachably connected to one end of the support rod away from the other end of the connecting rod, and the other end of the locking rod passes through the gap;

[0017] The locking nut is threadedly connected to the locking rod, and the locking nut is located above the two clamping plates and is limitedly matched with the two clamping plates.

[0018] When the joint welding of the folded filter screen is needed, the straight seam welding positioning mechanism is detached from the clamping positioning mechanism, and when the straight seam welding positioning mechanism is detached, the locking rod and the connecting rod of the straight seam welding positioning mechanism slide along the gap, so that the straight seam welding positioning mechanism can be quickly slid out of the opening at one end of the gap to complete the detachment. During welding operation, first, the first and second ends of the folded filter screen are passed through the gap from bottom to top, and the power source is controlled to act to push the clamping plates to clamp the folded filter screen, then the excess material at the first and second ends of the folded filter screen is cut off by the cutting knife to ensure the flatness of the cutting surface, and finally the welding mechanism acts, the welding gun performs continuous welding action in the linear direction of the gap, and the joint welding of the folded filter screen is realized. After the welding is completed, the first power source is controlled to reset, the clamping plates can be loosened to release the folded filter screen to realize discharging, and the welding work is completed.

[0019] When the straight seam welding positioning mechanism needs to be installed below the clamping positioning mechanism for straight seam welding of the cylindrical filter core framework, the connecting rod and the locking rod of the straight seam welding positioning mechanism can be slid into the opening at one end of the gap, so that the straight seam welding positioning mechanism can be quickly installed at the gap. During welding operation, the locking nut is first loosened, the locking rod can slide alone along the gap and separate from the support rod, one end of the support rod tilts and hangs down under the action of its own gravity, at this time the filter core framework can be easily sleeved onto the support rod from the hanging end, then the locking rod is slid to reconnect the locking rod and the support rod, the locking nut is tightened by a tool, the support rod is pulled up and pressed by the locking rod, so that the support rod clamps the filter core framework together with the clamping plate, and the longitudinal gap of the filter core framework is aligned with the gap, finally the welding mechanism operates, the welding gun performs continuous welding operation in the straight line direction of the gap, realizing continuous full welding of the longitudinal gap of the filter core framework. After welding is completed, the locking nut is loosened, the locking rod slides alone along the gap and separates from the support rod, one end of the support rod tilts and hangs down under the action of its own gravity, and the filter core framework can also slide off the support rod to realize discharging, completing the welding work this time.

[0020] The above-mentioned metal filter core welding equipment can not only meet the joint welding of folded filter screens, but also be applied to straight seam full welding of filter core frameworks, realizing the purpose of one machine with two functions. Not only the equipment cost is greatly reduced and the site occupation area is reduced, but also the structure is simple, the function switching is convenient, and the operation is convenient.

[0021] As a preferred, the support rod is internally formed with a gas flow channel, an air guide groove is formed on the upper side wall of the support rod, the air guide groove can be aligned with the gap, and a plurality of air guide holes connected with the gas flow channel are arranged on the air guide groove in intervals; a gas inlet connected with the gas flow channel is further formed on one end of the support rod close to the connecting rod, and the gas inlet is connected with a gas pipeline for introducing protective gas.

[0022] The above-mentioned metal filter core welding equipment usually adopts argon arc welding, and argon gas is used as protective gas to reduce welding oxidation and improve welding quality. In straight seam welding of the filter core framework, the air guide groove is aligned with the longitudinal gap of the filter core framework, and the protective gas enters the gas flow channel through the gas inlet, then uniformly flows into the air guide groove through the air guide holes, and the protective gas in the air guide groove wraps the back of the longitudinal gap of the filter core framework, so as to further play a protective role and improve the welding quality.

[0023] As preferred, the gas flow channel comprises an upper channel and a lower channel arranged side by side, and the upper channel and the lower channel are communicated through one end; wherein the upper channel is communicated with the flow guide hole, and the lower channel is communicated with the gas inlet. A plurality of grooves extending to the bottom of the upper channel are formed on the flow guide groove; the sealing plate is detachably installed in the groove; the sealing plate is inserted into the groove and sealed.

[0024] The standard filter core includes different length specifications such as 5 inches, 10 inches, 20 inches, etc. When the length of the support rod is longer, it can be applied to filter core skeletons of various lengths such as 5 inches / 10 inches. However, the smaller length filter core skeleton cannot completely cover the flow guide groove, which causes the protective gas to quickly escape during the welding process, resulting in waste of protective gas and affecting the welding quality. By setting the sealing plate, the protective gas can be blocked so that the protective gas can only flow into the flow guide groove of the specified length. According to the length of the filter core skeleton required for welding, the sealing plate can be inserted into the groove at the appropriate position, which can ensure that the protective gas can be more concentrated during the welding process, reducing the waste of protective gas and further ensuring that the protective gas can cover the welding part to ensure reliable welding quality.

[0025] As preferred, the upper side of the sealing plate protrudes a limiting boss, and the width of the limiting boss is less than the gap. When the filter core skeleton is installed on the support rod, the position of the filter core skeleton can be accurately positioned to ensure that the filter core skeleton can basically cover the effective length of the flow guide groove, which can ensure that the protective gas can be more concentrated during the welding process.

[0026] As preferred, the bottom of the locking rod is integrally connected with a T-shaped connecting block, and the end of the support rod is formed with a T-shaped groove corresponding to the T-shaped connecting block. The locking rod is inserted into the T-shaped groove of the support rod through the T-shaped connecting block to form a detachable connection. Such arrangement not only has a simple structure and is easy to disassemble and assemble, but also can further reduce the overall weight of the support rod, facilitating operation.

[0027] As preferred, the connecting rod and the locking rod are each sleeved with a support pad. Through the support pad, the contact area of the clamping plate can be increased, which not only makes the structure more stable, but also reduces the damage of the nut to the clamping plate.

[0028] As preferred, the clamping plate comprises a base and a clamping piece mounted on the base. The base and the clamping piece are made of different materials. The clamping piece is preferably made of high-strength and high-temperature-resistant metal material, and the base is preferably made of cheaper metal material, which meets the high-temperature environment requirement of welding and is lower in cost. In addition, the clamping piece can be easily disassembled and replaced when it is burned.

[0029] As preferred, the horizontal straight line module is further provided with a fine adjustment assembly capable of adjusting the position and angle of the welding gun, so as to accurately fine adjust the position and angle of the welding gun and ensure stable welding quality.

[0030] The metal filter core welding equipment has the advantages that the straight seam welding positioning mechanism is convenient to disassemble and assemble, the clamping positioning mechanism can be used for positioning and clamping the folded filter screen to facilitate joint welding, and the clamping positioning mechanism can be used for positioning and clamping the filter core framework in cooperation with the straight seam welding positioning mechanism to facilitate straight seam full welding, so that the purpose of one machine with two functions is achieved, the equipment cost is reduced, and the site occupation area is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 FIG. 1 is a structural schematic view of a metal filter core welding equipment according to an embodiment of the present application.

[0032] Figure 2 FIG. 2 is a front structural schematic view of the metal filter core welding equipment according to the embodiment of the present application.

[0033] Figure 3 FIG. 3 is an enlarged schematic view of A in FIG. 1. Figure 1

[0034] Figure 4 FIG. 4 is an enlarged schematic view of B in FIG. 1. Figure 1

[0035] Figure 5 FIG. 5 is a structural schematic view of a straight seam welding positioning mechanism according to an embodiment of the present application.

[0036] Figure 6 FIG. 6 is an enlarged schematic view of C in FIG. 1. Figure 5

[0037] Figure 7 FIG. 7 is an enlarged schematic view of D in FIG. 1. Figure 5

[0038] Figure 8 FIG. 8 is an enlarged schematic view of E in FIG. 1. Figure 5

[0039] Figure 9 FIG. 9 is a cooperative structural schematic view of a support rod and a filter core framework according to an embodiment of the present application.

[0040] Figure 10 FIG. 10 is an enlarged schematic view of F in FIG. 1. Figure 9

[0041] Figure 11 FIG. 11 is an enlarged schematic view of G in FIG. 1. Figure 9

[0042] Figure 12 FIG. 12 is an enlarged schematic view of H in FIG. 1. Figure 9 ​​​​​​​​

[0043] Figure 13 Figure 1 is a structural schematic diagram of a metal filter core welding device according to an embodiment of the present application.

[0044] Figure 14 Figure 2 is a structural schematic diagram of a filter core framework. DETAILED DESCRIPTION

[0045] The embodiments of the present application will be further described below with reference to the accompanying drawings.

[0046] As shown in Figures 1-12 Figure 1 is a structural schematic diagram of a metal filter core welding device according to an embodiment of the present application. The metal filter core welding device comprises a rack 1, a clamping and positioning mechanism 2, a welding mechanism 3, and a control system 6.

[0047] The clamping and positioning mechanism 2 comprises two clamping plates 21 arranged in front of and behind each other, and a gap 22 is formed between the two clamping plates 21. One of the clamping plates is fixed, and the other clamping plate is slidingly arranged on the rack 1, and hydraulic cylinders (not shown in the figure) are arranged at both ends of the clamping plate as power sources. The clamping plate 21 can be driven to move forward and backward by the hydraulic cylinders, so as to clamp and release the folded filter screen. Of course, in some other embodiments, both of the clamping plates can be arranged in a movable structure, and the power sources can also be in the form of air cylinders or other power sources.

[0048] The clamping plate 21 comprises a base 211 and a clamping piece 212 arranged on the base 211. The clamping piece 212 is in the form of a long strip and is fixedly connected to the base 211 by screws. The clamping piece 212 is affected by the clamping action and the high temperature in the welding process, and may be damaged by abrasion after a period of work. The clamping plate 21 is arranged in two parts of the base and the clamping piece, so as to facilitate repair and replacement. In addition, the clamping piece 212 and the base 211 can also be made of different materials, which can further reduce the cost under the premise of meeting the basic functions.

[0049] The welding mechanism 3 comprises a horizontal linear module 31, an argon arc welding assembly, and a fine adjustment assembly 5.

[0050] The horizontal linear module 31 can be a screw type linear module driven and controlled by a servo motor. The horizontal linear module 31 comprises a horizontal rail 311, a moving seat 312, a servo motor 313, and a ball screw. The horizontal rail 311 is arranged horizontally on the rack 1 and is arranged in parallel with the gap 22. The moving seat 312 is slidingly arranged on the horizontal rail 311 and is linked and matched with the ball screw. The servo motor 313 is drivingly connected to the ball screw. The horizontal linear module 31 is driven by a servo motor, has higher precision, and realizes transmission by a ball screw, so as to realize stable and reliable movement and high-precision and high-stability linear movement.

[0051] The argon arc welding assembly includes a power supply, a welding torch 32, an argon supply unit, a control unit, etc., and of course, the argon arc welding assembly itself is a conventional technology, and thus is not described here, and only the welding torch 32 is shown in the figure, which is fixedly installed on the moving seat of the horizontal linear module 31 and aligned with the gap 22, and can drive the welding torch 32 to move synchronously in the linear direction of the gap 22 when the moving seat 312 moves along the horizontal rail 311, thereby implementing continuous automatic welding work.

[0052] In addition, the horizontal linear module 31 is also provided with a fine adjustment assembly 5 for adjusting the position and angle of the welding torch, and the position of the welding torch 32 can be further adjusted by the fine adjustment assembly 5 during welding operation, thereby ensuring that the welding torch 32 can be accurately aligned with the welding product to ensure reliable welding quality.

[0053] The fine adjustment assembly 5 includes a first linear module 51 arranged horizontally and a second linear module 52 arranged vertically, the first linear module 51 is fixedly installed on the moving seat 312, the second linear module 52 is perpendicularly installed on the first linear module 51, and the first linear module 51 is arranged perpendicularly to the horizontal linear module 31, and the welding torch 32 is installed on the second linear module 52. The first linear module 51 and the second linear module 52 each include a fixed module, a lead screw, and a sliding block, the sliding block is slidingly arranged on the fixed module, and the lead screw is threadedly connected with the sliding block, and during operation, the sliding block can be driven to move by manually rotating the lead screw, thereby realizing fine adjustment of the welding torch 32 in the up-down and front-back positions.

[0054] Further, a cylinder 53 arranged vertically is further installed on the sliding block of the second linear module 52, and the welding torch 32 is installed on the cylinder 53, and during welding, the welding torch needs to be close to the welding product, and during positioning, installation, and disassembly of the welding product, the welding torch being too close will inevitably affect the operation, and the adjustment range of the second linear module 52 itself is small, and the adjustment speed is slow, and thus the welding torch 32 cannot be quickly moved up and down, and thus the cylinder 53 can quickly drive the welding torch to move, and when welding is to be performed, the welding torch 32 is quickly moved downward by the cylinder, so as to quickly approach the welding product, and when welding is completed, the welding torch 32 is quickly moved upward by the cylinder 53, so as to move away from the welding product, thereby facilitating positioning, installation, and disassembly of the product.

[0055] Further, a clamp 54 for clamping the welding torch is further arranged at the output end of the cylinder 53, and the clamp 54 is connected with the cylinder 53 through a horizontal connecting rod 55, the clamp 54 is composed of two semicircular / arc-shaped clamping pieces, and the handle of the welding torch 32 can be arranged in a cylindrical shape, thereby facilitating rotation adjustment of the angle position of the welding torch.

[0056] The control system 6 adopts a common PLC control system, which is a general industrial automatic control device and is a conventional technology, so it is not described in detail here. The operator can turn on or off the hydraulic cylinder, servo motor, cylinder, argon arc welding assembly, etc. through the control system 6, thereby realizing automatic operation.

[0057] The metal filter core welding equipment can be used for joint welding of the folded filter screen. When the stainless steel filter screen is automatically folded into a pleated structure by a pleating machine, it can be placed into the metal filter core welding equipment for joint welding. The specific steps of joint welding are as follows:

[0058] 1. The first end and the second end of the folded filter screen are mutually adhered and together pass through the gap 22 from bottom to top, and then the power source is controlled to act, so as to push the clamping plate 21 to clamp the folded filter screen;

[0059] 2. The excess material at the first end and the second end of the folded filter screen is cut off by the limiting clamping strip, cutting knife and other tools;

[0060] 3. The position of the welding gun is quickly adjusted by the horizontal straight line module 31 and the fine adjustment assembly 5, so as to align with the gap and align with one end of the folded filter screen;

[0061] 4. The automatic welding program is started, the horizontal straight line module starts to automatically act, and the power supply of the argon arc welding assembly is automatically turned on at the same time, so that the welding gun 32 slowly moves along the straight line direction of the gap 22, and the folded filter screen is continuously welded, thereby realizing joint welding of the folded filter screen;

[0062] 5. After the welding is completed, the power supply of the argon arc welding assembly is automatically turned off, the cylinder 53 drives the welding gun 32 to lift, and then the horizontal straight line module is automatically reset;

[0063] 6. The power source is controlled to reset the action, so that the clamping plate releases the folded filter screen to realize discharging, and the welding work is completed.

[0064] The metal filter core welding equipment can be additionally provided with a set of straight seam welding positioning mechanism 4, which is detachably installed below the clamping positioning mechanism 2 and is used for straight seam welding of the filter core framework. The straight seam welding positioning mechanism 4 specifically comprises a support rod 41, a connecting rod 42, an adjusting nut 43, a locking rod 44 and a locking nut 45.

[0065] The support rod 41 is in the form of a long strip-shaped rod structure. The support rod 41 is not necessarily a cylindrical rod, but at least the upper side thereof is in the form of a circular arc to ensure that it can be matched with the cylindrical filter core framework, and a flow guide groove 411 is formed on the upper side of the support rod 41 along the length direction thereof.

[0066] The connecting rod 42 is hinged with the support rod 41, and the specific connection structure is that a linear slot is formed on the upper side wall of one end of the support rod 41, one end of the connecting rod 42 is inserted into the linear slot and is rotatably connected with the support rod 41 through a pin shaft. The other end of the connecting rod 42 passes through the gap 22 from bottom to top, and the outer side wall thereof is formed with external threads. The adjusting nut 43 is threadedly connected on the connecting rod 42 and is located above the two clamping plates 21 and is limitedly matched with the clamping plates 21.

[0067] The locking rod 44 is detachably connected with the support rod 41, and the specific connection structure is that a T-shaped slot 419 is formed on the other end of the support rod 41, the bottom of the locking rod 44 is integrally connected with a T-shaped connecting block 441, the T-shaped connecting block 441 is correspondingly matched with the T-shaped slot 419, and the locking rod 44 is connected with / detached from the support rod 41 by inserting the T-shaped connecting block 441 into the T-shaped slot 419 and pulling the T-shaped connecting block 441 out of the T-shaped slot 419. Of course, a clamping table can be protruded on the end of the support rod, and a clamping groove is correspondingly formed on the locking rod, so that the connecting structure is convenient to assemble and disassemble.

[0068] The upper end of the locking rod 44 also passes through the gap 22 from bottom to top, and the outer side wall thereof is formed with external threads. The locking nut 45 is threadedly connected on the locking rod 44 and is located above the two clamping plates 21 and is limitedly matched with the clamping plates 21.

[0069] The support rod 41 can be hung below the two clamping plates through the connecting rod 42, the adjusting nut 43, the locking rod 44 and the locking nut 45. The separable structure of the locking rod 44 and the support rod 41 enables the end of the support rod 41 to be quickly opened or closed, so that the installation and dismounting of the filter core framework can be realized. The rotatable connection of the support rod 41 and the connecting rod 42 enables the support rod 41 to swing slightly relative to the connecting rod 42, so that the installation and dismounting of the filter core framework can be more conveniently realized. The torque wrench can be used to easily lock the adjusting nut 43 and the locking nut 45, so as to force the support rod 41 to press the filter core framework below the two clamping plates.

[0070] When the filter core framework needs to be straight seam welded, the straight seam welding positioning mechanism 4 is arranged, and when the folded filter screen needs to be joint welding, the straight seam welding positioning mechanism is removed, so that one machine can be used for two purposes.

[0071] When the straight seam welding positioning mechanism is installed on the metal filter core welding equipment, only need to pass the connecting rod 42 and the locking rod 44 from bottom to top through the gap 22, and respectively screw the adjusting nut 43 and the locking nut 45, the straight seam welding positioning mechanism can be hung below the two clamping plates 21, the installation is very convenient, then only need to slide the locking rod 44 along the gap, the connection or separation between the locking rod 44 and the support rod 41 can be realized. Similarly, when the straight seam welding positioning mechanism is disassembled on the metal filter core welding equipment, only need to unscrew the adjusting nut 43 and the locking nut 45, the connecting rod 42 and the locking rod 44 can be separated from the gap, so that the straight seam welding positioning mechanism can be taken off from the clamping plate, the disassembly is very convenient. In addition, the adjusting nut 43 and the locking nut 45 can also be connected with the connecting rod 42 and the locking rod 44 respectively, during the installation operation, the connecting rod 42 and the locking rod 44 are respectively slid into the openings at both ends of the gap, and during the disassembly operation, the connecting rod 42 and the locking rod 44 are slid along the gap, so that they are slid out of the openings at both ends of the gap.

[0072] After the metal filter core welding equipment is configured with the straight seam welding positioning mechanism 4, it can be used for straight seam welding of the filter core framework. When the filter core framework is made, the punched plate is usually wound into a cylindrical shape by a coiling machine, then the joint is fixed by manual spot welding, and the arc guide plates are fixed by spot welding at both ends of the punched plate. The filter core framework after spot welding is shown in FIG. 8, then the straight seam welding positioning mechanism is fixed to implement straight seam full welding. The specific steps of the straight seam full welding are as follows. Figure 14

[0073] 1. Loosen the locking nut 45, and slide the locking rod 44 along the gap 22 to separate the locking rod 44 from the support rod 41, as shown in FIG. 9, after losing the support of the locking rod 44, one end of the support rod 41 will be inclined under the action of its own gravity. Figure 13

[0074] 2. Put the filter core framework into the support rod 41 from the inclined end of the support rod 41, and slide the locking rod 44 along the gap 22 to reset the locking rod 44, so that the locking rod 44 is reconnected with the support rod 41.

[0075] 3. Tighten the locking nut 45 by a tool such as a torque wrench, under the action of the locking nut 45, the locking rod 44 is lifted upward and pulls the support rod 41 to press upward, so that the support rod 41 is fixed and clamped with the clamping plate 21 to fix the filter core framework, at this time, the front of the straight seam of the filter core framework is aligned with the gap 22, and the back is corresponding to the flow guide groove of the support rod 41.

[0076] 4. Adjust the position of the welding gun to keep it aligned with the gap, and align the middle position of one end of the arc guide plate on the filter core framework.

[0077] ​​5, start the automatic welding program, horizontal linear module starts to act, at the same time, the power of the argon arc welding assembly is turned on, so that the welding gun slowly moves along the gap in the straight line direction, and continuously welds the straight seam of the filter core framework, until the welding gun moves to the arc plate at the other end of the filter core framework, so as to realize the full welding of the straight seam of the filter core framework;

[0078] 6, after the welding is completed, the power of the argon arc welding assembly is automatically turned off, and the welding gun 32 is lifted by the cylinder 53, and then the horizontal linear module is automatically reset;

[0079] 7, loosen the locking nut 45, and slide the locking rod 44 along the gap 22 to separate it from the support rod 41, so that the filter core framework slides out along the support rod 41 to realize the discharging, and the welding work is completed.

[0080] By adopting the above scheme, when the straight seam welding positioning mechanism needs to be used for the joint welding of the folded filter screen, the straight seam welding positioning mechanism is removed, and the clamping positioning mechanism is used alone to realize the positioning and clamping of the folded filter screen. When the straight seam welding positioning mechanism needs to be used for the full welding of the straight seam of the filter core framework, the straight seam welding positioning mechanism is installed, and the clamping positioning mechanism cooperates with the straight seam welding positioning mechanism to realize the positioning and clamping of the filter core framework, so as to realize the purpose of one machine with two functions, reduce the equipment cost, and reduce the site occupation area. Moreover, the straight seam welding positioning mechanism has a simple structure and is very convenient to disassemble and assemble.

[0081] In addition, the connecting rod 42 and the locking rod 44 are each sleeved with a support pad 46, which can increase the contact area and ensure that it can be stably hung on the clamping plate. Moreover, the support pad 46 can reduce the wear of the clamping plate during the rotation of the adjusting nut 43 and the locking nut 45.

[0082] In order to further ensure the welding quality, the back of the longitudinal gap of the filter core framework also needs to be protected by argon during the full welding of the straight seam. Therefore, the support rod 41 can further form a gas flow channel inside, which includes an upper channel 416 and a lower channel 415 arranged side by side, and the upper channel 416 and the lower channel 415 are connected through one end. A plurality of flow guide holes 412 are arranged on the flow guide groove 411 and connected to the upper channel 416. The end of the support rod 41 close to the connecting rod 42 further forms a gas inlet 413 connected to the lower channel 415.

[0083] When the filter core framework sleeve is set on the support rod 41, the flow guide groove 411 can be aligned with the straight seam of the filter core framework, the argon supply unit can branch into two lines, one of which is connected with the welding gun through a hose, the outlet of which is aligned with the welding position and moves synchronously with the welding gun, so as to always maintain the argon protection to the front position of the welding, and the other is connected with the gas inlet 413 through the gas pipeline 414, argon can enter the lower channel 415 through the gas inlet 413, and then enter the flow guide groove 411 through the upper channel 416 and the flow guide hole 412, so as to protect the back of the straight seam of the filter core framework, thereby ensuring the welding quality.

[0084] In addition, a plurality of grooves 417 extending through the flow guide groove 411 to the bottom of the upper channel 416 are formed on the flow guide groove 411; the sealing plate 418 is detachably installed in the groove 417; and the sealing plate 418 is inserted into the groove 417 and sealingly matched with the groove 417.

[0085] The standard filter core is divided by length, and generally includes different length specifications such as 5 inches, 10 inches, 20 inches, 30 inches, etc. When the length of the support rod is long, it can be applied to filter core frameworks with different lengths such as 5 inches, 10 inches and 20 inches. However, the filter core framework with a smaller length cannot completely cover the flow guide groove, so that most of the protective gas will not flow to the back of the filter core framework and will directly and quickly escape during the welding process, which not only causes waste of the protective gas, but also cannot ensure that the protective gas can wrap the welding position, affecting the welding quality. By setting the sealing plate, the protective gas can be blocked so that the protective gas can only flow into the flow guide groove with a specified length. According to the length of the filter core framework to be welded, the sealing plate can be inserted into the groove at the appropriate position, so that the protective gas can be more concentrated during the welding process, not only reducing the waste of the protective gas, but also further ensuring that the protective gas can wrap the welding position, ensuring reliable welding quality.

[0086] In addition, the upper side of the sealing plate 418 protrudes a limiting boss, and the width of the limiting boss is less than the gap 22. When the filter core framework is installed on the support rod, the position of the filter core framework can be accurately and quickly positioned, so that the filter core framework can basically cover the effective length of the flow guide groove, and the protective gas can only flow into the flow guide groove with the effective length, so that the protective gas can be more concentrated during the welding process, not only reducing the waste of the protective gas, but also ensuring the wrapping of the welding position, improving the welding quality.

[0087] In the description of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0088] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0089] Skilled persons should know: although the present application has been described according to the above specific embodiments, the inventive idea of the present application is not limited to this invention, any modification using the inventive idea will be included in the scope of protection of the present patent.

Claims

1. A metal filter core welding device, comprising a frame (1), which is provided with; a clamping positioning mechanism (2), which comprises two front and rear corresponding clamping plates (21), a gap (22) is formed between the two clamping plates (21), at least one of the two clamping plates (21) can move forward and backward, and is connected with a power source capable of driving it to move forward and backward, the clamping positioning mechanism (2) is used for clamping and positioning the joint of the folded filter screen; a welding mechanism (3), which comprises a horizontal linear module (31) and a welding gun (32) mounted on the horizontal linear module (31), the horizontal linear module (31) is arranged in parallel with the gap (22), and the welding gun (32) is aligned with the gap (22), the welding mechanism (3) is used for continuous automatic welding in the linear direction of the gap; characterized in that and further comprising a straight seam welding positioning mechanism (4) for welding positioning of the filter core framework, the straight seam welding positioning mechanism (4) is detachably mounted below the clamping positioning mechanism (2), which comprises: a support rod (41) arranged below the two clamping plates (21) and aligned with the gap (22); a connecting rod (42) hinged to one end of the support rod (41), the other end of the connecting rod (42) passes through the gap (22); an adjusting nut (43) threadedly connected with the connecting rod (42), the adjusting nut (43) is located above the two clamping plates (21) and is limitedly matched with them; a locking rod (44) detachably connected at one end with the support rod (41) away from the other end of the connecting rod (42), the other end of the locking rod (44) passes through the gap (22); a locking nut (45) threadedly connected with the locking rod (44), the locking nut (45) is located above the two clamping plates (21) and is limitedly matched with them.

2. The metal filter core welding apparatus of claim 1, wherein: A gas flow passage is formed in the support rod (41), an air guide groove (411) is formed on the upper side wall of the support rod (41), the air guide groove (411) is aligned with the gap (22), and a plurality of air guide holes (412) connected with the gas flow passage are arranged on the air guide groove (411) at intervals; The end of the support rod (41) close to the connecting rod (42) is further provided with a gas inlet (413) connected with the gas flow passage, and the gas inlet (413) is connected with a gas pipeline (414) for introducing protective gas.

3. The metal filter core welding apparatus of claim 2, wherein: The gas flow passage comprises an upper passage (416) and a lower passage (415) arranged side by side, and the upper passage (416) and the lower passage (415) are connected at one end; The upper passage (416) is connected with the air guide hole (412), and the lower passage (415) is connected with the gas inlet (413).

4. The metal filter core welding apparatus of claim 3, wherein: A plurality of grooves (417) extending through the upper passage (416) are formed on the air guide groove (411); a sealing plate (418) is detachably mounted in the grooves (417); and the sealing plate (418) can be inserted into the grooves (417) and sealedly matched with them.

5. The metal filter core welding apparatus of claim 4, wherein: The upper side edge of the sealing plate (418) protrudes to form a limiting boss, and the width of the limiting boss is smaller than the gap (22).

6. The metal filter core welding apparatus of claim 1, wherein: The bottom of the locking rod (44) is integrally connected with a T-shaped connecting block (441), the end of the support rod (41) is formed with a T-shaped slot (419) corresponding to the T-shaped connecting block (441), and the locking rod (44) is inserted into the T-shaped slot (419) of the support rod (41) through the T-shaped connecting block (441) to form detachable connection.

7. The metal filter core welding apparatus of claim 1, wherein: The connecting rod (42) and the locking rod (44) are both sleeved with support pads (46).

8. The metal filter core welding apparatus of claim 1, wherein: The clamping plate (21) comprises a base (211) and a clamping piece (212) mounted on the base (211).

9. The metal filter core welding apparatus of claim 1, wherein: The horizontal straight line module (31) is further provided with a fine adjustment assembly (5) capable of adjusting the position and angle of the welding gun.

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