Automatic welding device for metal sheets and welding method thereof

Abstract

The invention relates to the technical field of metal sheet welding, and discloses an automatic welding device for metal sheets and a welding method thereof.The automatic welding device comprises a first supporting table, a second supporting table is fixed to one side of the first supporting table, and an extrusion block is fixed to one side of the upper end face of the second supporting table; a feeding mechanism is fixed to the other side of the upper end face of the second supporting table and fixed to the inner top of the support, and the feeding mechanism is connected with the other side of the movable frame. According to the automatic welding device for the metal sheets, when a pen holder is placed on a clamping base, the pen holder needs to abut against a first piston, a rotary table rotates anticlockwise, a first movable block is squeezed by a squeezing strip to move upwards, and two clamping plates in each set move and get close to each other under the action of a first toothed plate, a gear and a second toothed plate; and the penholder can be clamped and fixed by using a second spring and a clamping block in a matched mode, the penholder is still in a clamped state when rotating to the rear side of the upper end face of the rotary table, and the subsequent welding operation is more stable.

Description

Technical Field

[0001] The invention relates to the technical field of metal sheet welding, in particular to an automatic welding device for metal sheets and a welding method thereof. Background Art

[0002] Currently, tablet computers are generally equipped with electronic pens, and electronic pens usually use a metal tube as a base. Due to the size of the electronic pen, the metal tube usually has a small tube wall and a small tube diameter. In order to fix or assemble other components, a piece of metal sheet needs to be welded to the inner wall of the tube, so a welding device is needed.

[0003] The existing welding devices generally only perform a clamping and limiting process on the pipe when loading, and the clamping effect is poor, which will affect the stability and accuracy of the subsequent welding operation. It is inconvenient to automatically perform accurate positioning of the metal sheet before welding the metal sheet. The metal sheet is not tightly fitted to the inner wall of the pipe, which will result in loose welding. After the welding operation is completed, manual unloading is generally required, and the degree of automation is not high, which affects work efficiency. In view of the above problems, it is necessary to improve the existing equipment. Summary of the invention

[0004] The object of the present invention is to provide an automatic welding device for metal sheets and a welding method thereof, so as to solve the problem that the existing welding device proposed in the above background technology generally only performs a clamping and limiting process on the pipe when loading, and the clamping effect is poor, which will affect the stability and accuracy of the subsequent welding operation, and it is inconvenient to automatically perform accurate positioning of the metal sheet before welding the metal sheet. The metal sheet is not tightly fitted to the inner wall of the pipe, which will result in loose welding, and manual unloading is generally required after the welding operation is completed, and the degree of automation is not high, thereby affecting the work efficiency.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an automatic welding device for metal sheets and a welding method thereof, comprising a first support table, an extrusion strip is fixed to the upper end surface of the first support table, a first motor is fixed inside the first support table, the top of the first motor is connected to a clamping mechanism, the clamping mechanism comprises a turntable, a clamping seat is fixed to the upper end surface of the turntable, a clamping plate is slidably connected to the upper end surface of the turntable, the inner side of the clamping plate is connected to a clamping block via a second spring, and the clamping block passes through the clamping plate.

[0006] A bracket is fixed to the upper end surface of the first support platform, the lower side of the inner top of the bracket is connected to the mobile frame through an electric telescopic column, a welding machine and a protective cover are fixed to the front side of the mobile frame, and a unloading mechanism is fixed to the inner top of the bracket, and the unloading mechanism is connected to one side of the mobile frame.

[0007] A second support platform is fixed on one side of the first support platform, an extrusion block is fixed on one side of the upper end surface of the second support platform, a loading mechanism is fixed on the other side of the upper end surface of the second support platform, the loading mechanism is fixed on the inner top of the bracket, and the loading mechanism is connected to the other side of the movable frame.

[0008] Preferably, a groove is provided in the turntable, and a movable plate is slidably connected in the groove, a first movable block is fixed to the bottom of the movable plate, and the first movable block is connected to the bottom of the turntable through a first spring, and a ball is movably connected to the bottom of the first movable block.

[0009] Preferably, a first tooth plate is fixed on both sides of the upper end surface of the movable plate, and one side of the first tooth plate is meshedly connected with a gear, the gear is rotatably connected in the groove, and the top and the bottom of the gear are meshedly connected with a second tooth plate, the clamping plate is fixed on the outer side of the second tooth plate, and a sliding groove is provided on the upper end surface of the turntable, and the clamping plate is slidably connected in the sliding groove.

[0010] Preferably, a first oil cylinder is fixed in the turntable, and the upper side of the bottom of the first oil cylinder is connected to the first piston through a third spring, the first piston is slidably connected in the first oil cylinder, and the first piston passes through the top of the first oil cylinder and the upper end surface of the turntable, and a second oil cylinder is fixed in the turntable, the first oil cylinder is connected to two second oil cylinders through a first connecting pipe, and a second piston is slidably connected in the second oil cylinder, and the second piston passes through the top of the second oil cylinder and the upper end surface of the turntable.

[0011] Preferably, the unloading mechanism includes a third oil cylinder, and the third oil cylinder is fixed at the inner top of the bracket, a third piston is slidably connected in the third oil cylinder, and the third piston is connected to one side of the movable frame through a first connecting frame, a fixed frame is fixed to the upper end surface of the first support platform, and a fourth oil cylinder is fixed to one side of the fixed frame, the top of the fourth oil cylinder is connected to the bottom of the third oil cylinder through a second connecting pipe, and a fourth piston is slidably connected in the fourth oil cylinder.

[0012] Preferably, the fourth piston passes through the bottom of the fourth oil cylinder and is connected to the first slide rail, and a pressing frame is fixed on one side of the first slide rail, a second motor is fixed on the front side of the first slide rail, and the output end of the second motor is connected to the screw rod, the outer side of the screw rod is threadedly connected to a push plate, and the push plate is slidably connected in the first slide rail.

[0013] Preferably, the feeding mechanism includes a fifth oil cylinder, and the fifth oil cylinder is fixed on the other side of the upper end surface of the second support platform, a sixth oil cylinder is fixed to the inner top of the bracket, and the bottom of the sixth oil cylinder is connected to one side of the fifth oil cylinder through a third connecting pipe, a fifth piston is slidably connected in the sixth oil cylinder, and the fifth piston is connected to the other side of the movable frame through the second connecting frame.

[0014] Preferably, a sixth piston is slidably connected in the fifth oil cylinder, and the sixth piston passes through the other side of the fifth oil cylinder and is connected to the second slide rail, a limiting column is fixed in the second slide rail, and the lower side of the top of the second slide rail is connected to the second movable block through a fourth spring, the second movable block is slidably connected in the second slide rail, and the limiting column passes through the second movable block.

[0015] Preferably, support rods are symmetrically fixed on both sides of one end surface of the second movable block, and two slots are formed on the upper end surface of the support rods.

[0016] An automatic welding method for metal sheets comprises the following steps: S1. Place the pen holder on the holder and place it against the second piston. Put the metal sheet into the slot. The turntable rotates counterclockwise. The first movable block is squeezed by the squeezing bar and moves upward. The movable plate and the two first tooth plates move upward. The gear rotates to drive the two second tooth plates to move. The two clamps move closer to each other. The second spring and the clamp block are used to clamp and fix the pen holder. S2, after the pen holder is moved to the bottom of the protective cover, the movable frame, the welding machine and the protective cover are moved downward as a whole, the protective cover covers the pen holder, and the two support rods are respectively extended into the corresponding pen holders, and the second movable block is finally moved upward under the extrusion of the extrusion block, and the two support rods are moved upward, so that the metal sheet is attached to the inner top of the pen holder, and then the metal sheet is welded to the pen holder by the welding machine. After the welding operation is completed, the welding machine, the protective cover and the two support rods are removed; S3. When the pen holder rotates to the left side of the upper end surface of the turntable, the clamping block releases the clamping of the pen holder, the pressing frame moves down to press the first piston, the two second pistons move down and retract into the turntable, and then the push plate moves backward and pushes the pen holder off the holder to facilitate automatic unloading. While the previous pen holder is being unloaded, the next pen holder is welded.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The automatic welding device for metal sheets can achieve the purpose of clamping and fixing. When the pen holder is placed on the holder, it needs to be pressed against the first piston. The holder is provided with four groups, and each group of holders is provided with two. Two pen holders can be welded each time. The turntable rotates counterclockwise. When the pen holder rotates to the right side of the upper end surface of the turntable, the first movable block is squeezed by the squeezing strip and moves up. The two clamping plates in each group move and approach each other under the action of the first tooth plate, the gear and the second tooth plate. The pen holder can be clamped and fixed by using the second spring and the clamping block. When the pen holder rotates to the rear side of the upper end surface of the turntable, it is still in a clamped state, making the subsequent welding operation more stable.

[0018] 2. The automatic welding device for metal sheets can achieve the purpose of automatic fitting and positioning as well as isolation and protection. Two slots are provided on each support rod, and a metal sheet can be placed in each slot. When the movable frame, the welding machine and the protective cover move downward as a whole, the fifth piston and the second connecting frame move downward, the sixth piston, the second slide rail, the second movable block and the two support rods move to the left, and the two support rods extend into the corresponding pen barrels respectively. After that, the second movable block moves upward due to the squeezing of the squeezing block, and the two support rods move upward, so that the metal sheet can fit on the inner wall of the pen barrel, making the subsequent welding operation more precise and tight. The protective cover can play a role of isolation and protection during the welding process.

[0019] 3. The automatic welding device for metal sheets can achieve the purpose of automatic unloading and continuous and efficient welding. When the pen holder rotates to the left side of the upper end surface of the turntable, the clamping block releases the clamping of the pen holder. When the movable frame moves down, the third piston and the first connecting frame move down, and the fourth piston, the first slide rail, the pressing frame and the push plate move down. The first piston moves down due to the squeezing of the pressing frame, and the two second pistons move down and withdraw, and then the push plate moves backward, which is convenient for automatic unloading. The next pen holder can be welded while the previous pen holder is unloading, making the whole operation more continuous and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the front view of the three-dimensional structure of the present invention; Figure 2 It is a right-side stereoscopic structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the front cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the structure of the clamping mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the feeding mechanism of the present invention; Figure 6 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 7 For the present invention Figure 5 The enlarged structural diagram at B in the middle; Figure 8 It is a schematic diagram of the connection structure of the first support platform, the extrusion bar and the first motor of the present invention; Fig. 9 It is a schematic diagram of the connection structure of the turntable, the first movable block and the ball bearing of the present invention; Fig.10 It is a schematic diagram of the connection structure of the turntable, the clamping seat, the clamping plate, the clamping block, the first piston and the second piston of the present invention; Fig.11 It is a schematic diagram of the connection structure of the turntable, the first movable block, the first connecting pipeline, the second oil cylinder and the second piston of the present invention; Fig.12 This is a schematic diagram of the connection structure of the first oil cylinder, the first piston, the first connecting pipe, the second oil cylinder and the second piston of the present invention; Fig.13 It is a schematic diagram of the connection structure of the first oil cylinder, the third spring, the first piston and the first connecting pipe of the present invention; Fig.14 It is a schematic diagram of the connection structure of the mobile frame, welding machine and protective cover of the present invention; Fig.15 It is a schematic structural diagram of the material feeding mechanism of the present invention.

[0021] In the figure: 1, first support platform; 2, extrusion bar; 3, first motor; 4, clamping mechanism; 401, turntable; 402, card seat; 403, groove; 404, moving plate; 405, first movable block; 406, first spring; 407, ball; 408, first tooth plate; 409, gear; 410, second tooth plate; 411, clamping plate; 412, slide groove; 413, second spring; 414, clamping block; 415, first oil cylinder; 416, third spring; 417, first piston; 418, first connecting pipe; 419, second oil cylinder; 420, second piston; 5, bracket; 6, electric telescopic column; 7, moving frame; 8, welding machine; 9, protective cover; 10, unloading mechanism; 1001, third oil cylinder; 10 02, the third piston; 1003, the first connecting frame; 1004, the second connecting pipe; 1005, the fourth oil cylinder; 1006, the fixed frame; 1007, the fourth piston; 1008, the first slide rail; 1009, the pressing frame; 1010, the second motor; 1011, the screw rod; 1012, the push plate; 11, the second support platform; 12, the extrusion block; 13, the feeding mechanism; 1301, the fifth oil cylinder; 1302, the third connecting pipe; 1303, the sixth oil cylinder; 1304, the fifth piston; 1305, the second connecting frame; 1306, the sixth piston; 1307, the second slide rail; 1308, the limit column; 1309, the fourth spring; 1310, the second movable block; 1311, the support rod; 1312, the slot. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 15The present invention provides a technical solution: an automatic welding device for metal sheets, comprising a first support platform 1, an extrusion strip 2 is fixed to the upper end surface of the first support platform 1, a first motor 3 is fixed inside the first support platform 1, the top of the first motor 3 is connected to a clamping mechanism 4, the clamping mechanism 4 comprises a turntable 401, a clamping seat 402 is fixed to the upper end surface of the turntable 401, a clamping plate 411 is slidably connected to the upper end surface of the turntable 401, the inner side of the clamping plate 411 is connected to a clamping block 414 through a second spring 413, and the clamping block 414 passes through the clamping plate 411.

[0024] A bracket 5 is fixed to the upper end surface of the first support platform 1, and the lower side of the inner top of the bracket 5 is connected to the movable frame 7 through an electric telescopic column 6. A welding machine 8 and a protective cover 9 are fixed to the front side of the movable frame 7. A unloading mechanism 10 is fixed to the inner top of the bracket 5, and the unloading mechanism 10 is connected to one side of the movable frame 7.

[0025] A second support platform 11 is fixed on one side of the first support platform 1, an extrusion block 12 is fixed on one side of the upper end surface of the second support platform 11, and a loading mechanism 13 is fixed on the other side of the upper end surface of the second support platform 11. The loading mechanism 13 is fixed on the inner top of the bracket 5, and the loading mechanism 13 is connected to the other side of the movable frame 7.

[0026] In this embodiment, Figure 3 , Figure 4 , Figure 6 , Figure 8 and Fig. 9 As shown, a groove 403 is provided in the turntable 401, and a movable plate 404 is slidably connected in the groove 403, a first movable block 405 is fixed to the bottom of the movable plate 404, and the first movable block 405 is connected to the bottom of the turntable 401 through a first spring 406, and a ball 407 is movably connected to the bottom of the first movable block 405, and the turntable 401 can rotate counterclockwise under the action of the first motor 3, when the first movable block 405 is squeezed by the squeezing bar 2 and moves upward, the movable plate 404 moves upward accordingly, and when the first movable block 405 is not squeezed, it will automatically pop open under the action of the first spring 406, and the movable plate 404 moves downward accordingly, and when the first movable block 405 is squeezed, the ball 407 rolls, which is convenient for reducing friction.

[0027] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, first tooth plates 408 are fixed on both sides of the upper end surface of the movable plate 404, and one side of the first tooth plate 408 is meshedly connected with a gear 409, the gear 409 is rotatably connected to the groove 403, and the top and the bottom of the gear 409 are meshedly connected with a second tooth plate 410, a clamping plate 411 is fixed on the outer side of the second tooth plate 410, a slide groove 412 is provided on the upper end surface of the turntable 401, and the clamping plate 411 is slidably connected in the slide groove 412, when the movable plate 404 moves up and down, it will drive the first tooth plate 408 to move up and down, thereby driving the gear 409 to rotate, the two second tooth plates 410 move, the two second tooth plates 410 approach or move away from each other, the clamping plate 411 will clamp or release the pen shaft, and the slide groove 412 plays a limiting role in the sliding process of the clamping plate 411.

[0028] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig.10 , Fig.11 , Fig.12 and Fig.13 As shown, a first oil cylinder 415 is fixed in the turntable 401, and the upper side of the bottom of the first oil cylinder 415 is connected to the first piston 417 through a third spring 416, the first piston 417 is slidably connected in the first oil cylinder 415, and the first piston 417 passes through the top of the first oil cylinder 415 and the upper end surface of the turntable 401, a second oil cylinder 419 is fixed in the turntable 401, the first oil cylinder 415 is connected to the two second oil cylinders 419 through a first connecting pipe 418, and a second piston 420 is slidably connected in the second oil cylinder 419, and the second piston 420 It runs through the top of the second oil cylinder 419 and the upper end surface of the turntable 401. When placing the pen, the pen needs to be placed against the second piston 420 for easy positioning. The first connecting pipe 418 connects the first oil cylinder 415 and the two second oil cylinders 419. Hydraulic oil is stored in the first oil cylinder 415. When the first piston 417 is squeezed and moves downward, the two second pistons 420 move downward and withdraw under the action of oil pressure. When the first piston 417 is not squeezed, it will automatically pop up under the action of the third spring 416, and the two second pistons 420 will also automatically reset.

[0029] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Fig.14 and Fig.15As shown, the unloading mechanism 10 includes a third oil cylinder 1001, and the third oil cylinder 1001 is fixed to the inner top of the bracket 5, and a third piston 1002 is slidably connected in the third oil cylinder 1001, and the third piston 1002 is connected to one side of the movable frame 7 through the first connecting frame 1003, a fixed frame 1006 is fixed to the upper end surface of the first support platform 1, and a fourth oil cylinder 1005 is fixed to one side of the fixed frame 1006, the top of the fourth oil cylinder 1005 is connected to the bottom of the third oil cylinder 1001 through a second connecting pipe 1004, and a fourth piston 1007 is slidably connected in the fourth oil cylinder 1005, and the second connecting pipe 1004 serves to connect the third oil cylinder 1001 and the fourth oil cylinder 1005. When the movable frame 7 moves downward, it will drive the first connecting frame 1003 and the third piston 1002 to move downward, hydraulic oil is stored in the third oil cylinder 1001, and the fourth piston 1007 will move downward under the action of oil pressure.

[0030] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Fig.15 As shown, the fourth piston 1007 passes through the bottom of the fourth oil cylinder 1005 and is connected to the first slide rail 1008, and a pressing frame 1009 is fixed on one side of the first slide rail 1008, and a second motor 1010 is fixed on the front side of the first slide rail 1008, and the output end of the second motor 1010 is connected to the screw rod 1011, and the outer side of the screw rod 1011 is threadedly connected to a push plate 1012, and the push plate 1012 is slidably connected in the first slide rail 1008. When the fourth piston 1007 moves downward, it will drive the first slide rail 1008 and the pressing frame 1009 to move downward, and the pressing frame 1009 presses the first piston 417, and the two second pistons 420 move downward and withdraw, and the screw rod 1011 can rotate under the action of the second motor 1010. At this time, the push plate 1012 can slide backward under the limiting action of the first slide rail 1008 and the screw rod 1011, so as to facilitate automatic unloading.

[0031] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 7As shown, the feeding mechanism 13 includes a fifth oil cylinder 1301, and the fifth oil cylinder 1301 is fixed on the other side of the upper end surface of the second support platform 11, a sixth oil cylinder 1303 is fixed on the inner top of the bracket 5, and the bottom of the sixth oil cylinder 1303 is connected to one side of the fifth oil cylinder 1301 through a third connecting pipe 1302, a fifth piston 1304 is slidably connected in the sixth oil cylinder 1303, and the fifth piston 1304 is connected to the other side of the moving frame 7 through a second connecting frame 1305, and the third connecting pipe 1302 serves to connect the fifth oil cylinder 1301 and the sixth oil cylinder 1303, and when the moving frame 7 moves downward, it will drive the second connecting frame 1305 and the fifth piston 1304 to move downward.

[0032] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, a sixth piston 1306 is slidably connected in the fifth oil cylinder 1301, and the sixth piston 1306 passes through the other side of the fifth oil cylinder 1301 and is connected to the second slide rail 1307. A limiting column 1308 is fixed in the second slide rail 1307, and the lower side of the top of the second slide rail 1307 is connected to the second movable block 1310 through a fourth spring 1309. The second movable block 1310 is slidably connected in the second slide rail 1307, and the limiting column 1308 passes through the second movable block 1310. Hydraulic oil is stored in the fifth oil cylinder 1301. When the fifth piston 1304 moves downward, the sixth piston 1306 moves to the left under the action of oil pressure. The second movable block 1310 will move upward when squeezed, and the limiting column 1308 serves to limit the second movable block 1310.

[0033] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, support rods 1311 are symmetrically fixed on both sides of one end face of the second movable block 1310, and two slots 1312 are provided on the upper end faces of the support rods 1311. The slots 1312 are used to hold the metal sheets. When the sixth piston 1306 moves to the left, it will drive the second slide rail 1307, the second movable block 1310 and the two support rods 1311 to move to the left. The two support rods 1311 extend into the corresponding pen barrels respectively. When the second movable block 1310 is squeezed by the squeezing block 12 and moves upward, the two support rods 1311 move upward accordingly, so that the metal sheet can be attached to the part of the pen barrel to be welded, and then the welding machine 8 can be used to complete the welding operation.

[0034] According to another aspect of the present invention, there is provided an automatic welding method for metal sheets, comprising the following steps: S1. Place the pen holder on the holder 402 and place it against the second piston 420. Put the metal sheet into the slot 1312. The turntable 401 rotates counterclockwise. The first movable block 405 is squeezed by the squeezing bar 2 and moves upward. The movable plate 404 and the two first tooth plates 408 move upward. The gear 409 rotates to drive the two second tooth plates 410 to move. The two clamping plates 411 move closer to each other. The second spring 413 and the clamping block 414 are used to clamp and fix the pen holder. S2, after the pen barrel is moved to the bottom of the protective cover 9, the movable frame 7, the welding machine 8 and the protective cover 9 are moved downward as a whole, the protective cover 9 covers the pen barrel, and the two support rods 1311 are respectively extended into the corresponding pen barrels, and the second movable block 1310 is finally moved upward under the extrusion of the extrusion block 12, and the two support rods 1311 are moved upward, so that the metal sheet is attached to the inner top of the pen barrel, and then the welding machine 8 is used to weld the metal sheet to the pen barrel. After the welding operation is completed, the welding machine 8, the protective cover 9 and the two support rods 1311 are removed; S3. When the pen holder rotates to the left side of the upper end surface of the turntable 401, the clamping block 414 releases the clamping of the pen holder, the pressing frame 1009 moves down to press the first piston 417, and the two second pistons 420 move down and retract into the turntable 401. Then the push plate 1012 moves backward and pushes the pen holder off the holder 402 to facilitate automatic unloading. While the previous pen holder is being unloaded, the next pen holder can be welded.

[0035] The working principle of the device is as follows: first, the pen holder is placed on the holder 402 and abutted against the second piston 420. The holder 402 is provided with four groups, and each group of holders 402 is provided with two. The metal sheet is placed in the slot 1312, and the turntable 401 rotates counterclockwise. When the first movable block 405 is squeezed by the squeezing bar 2 and moves upward, the moving plate 404 and the two first tooth plates 408 move upward, the two gears 409 rotate, and the upper and lower second tooth plates 410 move. The two clamping plates 411 in each group are close to each other, and the second The spring 413 and the clamping block 414 clamp and fix the two pen barrels. After the pen barrels are turned to the bottom of the protective cover 9, the movable frame 7, the welding machine 8 and the protective cover 9 move downward as a whole, and the protective cover 9 covers the two pen barrels. At the same time, the fifth piston 1304 and the second connecting frame 1305 move downward, and the sixth piston 1306, the second slide rail 1307, the second movable block 1310 and the two support rods 1311 move to the left. The two support rods 1311 extend into the corresponding pen barrels respectively, and the second movable block 1310 is finally squeezed by the squeezing block 12 and moves upward, thereby driving The two support rods 1311 move upward, and the metal sheet finally fits tightly on the inner wall of the pen barrel. Then, the metal sheet is welded to the pen barrel by the welding machine 8. After the welding operation is completed, the movable frame 7, the welding machine 8 and the protective cover 9 are lifted as a whole. The two support rods 1311 move downward and withdraw from the pen barrel. When the welded main material is transferred to the bottom of the first slide rail 1008, the first movable block 405 is not squeezed by the squeezing bar 2, and the clamping block 414 releases the clamping of the pen barrel. When the movable frame 7 moves downward, it drives the third piston 1002 and the first connecting frame 1 003 moves down, the fourth piston 1007, the first slide rail 1008, the pressing frame 1009 and the push plate 1012 move down, the pressing frame 1009 presses the first piston 417, the two second pistons 420 move down and withdraw, then the screw rod 1011 rotates, the push plate 1012 moves backward and pushes the pen holder away from the holder 402, thereby realizing automatic unloading. While the previous pen holder is being unloaded, the next pen holder can be welded, and the contents not described in detail in this manual belong to the existing technology known to professional and technical personnel in this field.

[0036] In summary, the automatic welding device and welding method for metal sheets achieve the purposes of clamping and fixing, automatic fitting and positioning, isolation and protection, automatic unloading and continuous and efficient welding, and meet people's usage needs.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic welding device for metal sheets, comprising a first support table (1), characterized in that: An extrusion strip (2) is fixed to the upper end surface of the first support platform (1), a first motor (3) is fixed inside the first support platform (1), the top of the first motor (3) is connected to a clamping mechanism (4), the clamping mechanism (4) comprises a turntable (401), a clamping seat (402) is fixed to the upper end surface of the turntable (401), a clamping plate (411) is slidably connected to the upper end surface of the turntable (401), the inner side of the clamping plate (411) is connected to a clamping block (414) via a second spring (413), and the clamping block (414) passes through the clamping plate (411); A bracket (5) is fixed to the upper end surface of the first support platform (1); the lower side of the inner top of the bracket (5) is connected to the movable frame (7) via an electric telescopic column (6); a welding machine (8) and a protective cover (9) are fixed to the front side of the movable frame (7); a material discharge mechanism (10) is fixed to the inner top of the bracket (5); and the material discharge mechanism (10) is connected to one side of the movable frame (7); A second support platform (11) is fixed to one side of the first support platform (1), an extrusion block (12) is fixed to one side of the upper end surface of the second support platform (11), a loading mechanism (13) is fixed to the other side of the upper end surface of the second support platform (11), the loading mechanism (13) is fixed to the inner top of the bracket (5), and the loading mechanism (13) is connected to the other side of the movable frame (7).

2. The automatic welding device for metal sheets according to claim 1, characterized in that: The turntable (401) is provided with a groove (403), and a movable plate (404) is slidably connected in the groove (403); a first movable block (405) is fixed to the bottom of the movable plate (404), and the first movable block (405) is connected to the bottom of the turntable (401) via a first spring (406); a ball bearing (407) is movably connected to the bottom of the first movable block (405).

3. The automatic welding device for metal sheets according to claim 2, characterized in that: A first tooth plate (408) is fixed on both sides of the upper end surface of the movable plate (404), and a gear (409) is meshedly connected to one side of the first tooth plate (408), the gear (409) is rotatably connected to the groove (403), and the top of the gear (409) and the bottom of the gear (409) are meshedly connected to the second tooth plate (410), the clamping plate (411) is fixed on the outer side of the second tooth plate (410), and a sliding groove (412) is provided on the upper end surface of the turntable (401), and the clamping plate (411) is slidably connected in the sliding groove (412).

4. The automatic welding device for metal sheets according to claim 1, characterized in that: A first oil cylinder (415) is fixed in the turntable (401), and the upper side of the bottom of the first oil cylinder (415) is connected to a first piston (417) via a third spring (416); the first piston (417) is slidably connected in the first oil cylinder (415), and the first piston (417) passes through the top of the first oil cylinder (415) and the upper end surface of the turntable (401); a second oil cylinder (419) is fixed in the turntable (401), the first oil cylinder (415) is connected to two second oil cylinders (419) via a first connecting pipe (418), and a second piston (420) is slidably connected in the second oil cylinder (419), and the second piston (420) passes through the top of the second oil cylinder (419) and the upper end surface of the turntable (401).

5. The automatic welding device for metal sheets according to claim 1, characterized in that: The unloading mechanism (10) comprises a third oil cylinder (1001), and the third oil cylinder (1001) is fixed to the inner top of the bracket (5), a third piston (1002) is slidably connected inside the third oil cylinder (1001), and the third piston (1002) is connected to one side of the movable frame (7) through a first connecting frame (1003), a fixed frame (1006) is fixed to the upper end surface of the first support platform (1), and a fourth oil cylinder (1005) is fixed to one side of the fixed frame (1006), the top of the fourth oil cylinder (1005) is connected to the bottom of the third oil cylinder (1001) through a second connecting pipe (1004), and a fourth piston (1007) is slidably connected inside the fourth oil cylinder (1005).

6. The automatic welding device for metal sheets according to claim 5, characterized in that: The fourth piston (1007) passes through the bottom of the fourth oil cylinder (1005) and is connected to the first slide rail (1008), and a pressing frame (1009) is fixed to one side of the first slide rail (1008), a second motor (1010) is fixed to the front side of the first slide rail (1008), and the output end of the second motor (1010) is connected to the screw rod (1011), and the outer side of the screw rod (1011) is threadedly connected to a push plate (1012), and the push plate (1012) is slidably connected in the first slide rail (1008).

7. The automatic welding device for metal sheets according to claim 1, characterized in that: The feeding mechanism (13) comprises a fifth oil cylinder (1301), and the fifth oil cylinder (1301) is fixed to the other side of the upper end surface of the second support platform (11); a sixth oil cylinder (1303) is fixed to the inner top of the bracket (5), and the bottom of the sixth oil cylinder (1303) is connected to one side of the fifth oil cylinder (1301) through a third connecting pipe (1302); a fifth piston (1304) is slidably connected in the sixth oil cylinder (1303), and the fifth piston (1304) is connected to the other side of the movable frame (7) through a second connecting frame (1305).

8. The automatic welding device for metal sheets according to claim 7, characterized in that: A sixth piston (1306) is slidably connected in the fifth oil cylinder (1301), and the sixth piston (1306) passes through the other side of the fifth oil cylinder (1301) and is connected to the second slide rail (1307). A limiting column (1308) is fixed in the second slide rail (1307), and the lower side of the top of the second slide rail (1307) is connected to the second movable block (1310) through a fourth spring (1309). The second movable block (1310) is slidably connected in the second slide rail (1307), and the limiting column (1308) passes through the second movable block (1310).

9. The automatic welding device for metal sheets according to claim 8, characterized in that: Support rods (1311) are symmetrically fixed on both sides of one end surface of the second movable block (1310), and two clamping grooves (1312) are provided on the upper end surface of the support rod (1311).

10. An automatic welding method for metal sheets, applied to an automatic welding device for metal sheets as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Place the pen holder on the holder (402) and place it against the second piston (420), place the metal sheet into the slot (1312), rotate the turntable (401) counterclockwise, the first movable block (405) is pressed by the pressing strip (2) and moves upward, the movable plate (404) and the two first tooth plates (408) move upward, the gear (409) rotates to drive the two second tooth plates (410) to move, the two clamping plates (411) move closer to each other, and the second spring (413) and the clamping block (414) are used to clamp and fix the pen holder; S2, after the pen holder is moved to the bottom of the protective cover (9), the movable frame (7), the welding machine (8) and the protective cover (9) are moved downward as a whole, the protective cover (9) covers the pen holder, the two support rods (1311) are respectively extended into the corresponding pen holders, the second movable block (1310) is finally moved upward under the extrusion of the extrusion block (12), the two support rods (1311) are moved upward, so that the metal sheet is attached to the inner top of the pen holder, and then the welding machine (8) is used to weld the metal sheet to the pen holder. After the welding operation is completed, the welding machine (8), the protective cover (9) and the two support rods (1311) are removed; S3. When the pen holder rotates to the left side of the upper end surface of the turntable (401), the clamping block (414) releases the clamping of the pen holder, the pressing frame (1009) moves downward to press the first piston (417), the two second pistons (420) move downward and retract into the turntable (401), and then the push plate (1012) moves backward and pushes the pen holder off the holder (402), so as to facilitate automatic unloading. While unloading the previous pen holder, the next pen holder can be welded.

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