An explosion-proof valve stem welding device

Abstract

The present invention relates to the technical field of valve stem welding, and discloses an explosion-proof valve stem welding device, comprising a welding machine and a welding gun electrically connected to the welding machine, a motor is arranged above the welding machine, an output end of the motor is connected to a three-jaw chuck, and further comprises: an explosion-proof mechanism fixed on the motor; a supporting and guiding mechanism arranged on the three-jaw chuck and connected to the explosion-proof mechanism; a slag cleaning mechanism arranged on the outside of the three-jaw chuck and connected to the explosion-proof mechanism; a processing mechanism arranged on the outside of the welding machine and connected to the explosion-proof mechanism and the slag cleaning mechanism. The present invention arranges the explosion-proof mechanism, when the valve stem reacts abnormally during welding and causes an explosion, a buffer part and a protective part arranged in the explosion-proof mechanism will intercept the exploded valve stem, and at the same time, the buffer part cooperates with the buffer parts arranged therein to buffer external force, thereby preventing the exploded valve stem from splashing to the outside during welding, providing protective buffering, playing an explosion-proof role, and improving welding safety.

Description

Technical Field

[0001] The invention relates to the technical field of valve stem welding, and in particular to an explosion-proof valve stem welding device. Background Art

[0002] The welding device is a facility used for welding valve stems. It can use a three-jaw chuck to clamp the valve stem to be welded, and use electricity to drive the three-jaw chuck and the clamped valve stem to rotate slowly, and start the welding machine to energize the welding gun. By moving the welding gun, the welding end of the welding gun is brought into contact with the position on the valve stem that needs to be welded, and then the welding gun cooperates with the rotation of the valve stem to achieve the welding of the valve stem. However, traditional welding devices still have defects.

[0003] For example, during actual use, the valve stem or the welding area of ​​the valve stem may cause an abnormal reaction during welding due to material defects or high temperature of the valve stem itself, causing an explosion. The exploded valve stem will splash to the outside, increasing the danger. Summary of the invention

[0004] The present invention provides an explosion-proof valve stem welding device, which solves the technical problems in the related art that it is inconvenient to prevent the exploded valve stem from splashing to the outside during welding, provides a protective buffer, and has low welding safety.

[0005] The present invention provides an explosion-proof valve stem welding device, comprising a welding machine and a welding gun electrically connected to the welding machine, a motor is arranged above the welding machine, a three-jaw chuck is connected to the output end of the motor, and further comprising:

[0006] An explosion-proof mechanism is fixed on the motor and is located outside the three-jaw chuck to prevent the valve stem from exploding and causing damage to the outside during welding;

[0007] A supporting and guiding mechanism, which is arranged on the three-jaw chuck and connected to the explosion-proof mechanism to support the guiding valve stem and close the explosion-proof mechanism;

[0008] A slag cleaning mechanism, which is arranged outside the three-jaw chuck and connected to the explosion-proof mechanism, so as to clean the welding slag after welding;

[0009] A processing mechanism, which is arranged outside the welding machine and connected to the explosion-proof mechanism and the slag removal mechanism, so as to discharge the processed welding slag when the explosion-proof mechanism is opened;

[0010] The explosion-proof mechanism includes a protective part and a buffer part, wherein the buffer part is located on the inner side of the protective part and is connected to the protective part, the protective part is fixedly connected to the motor to cover the three-jaw chuck during welding, and the protective part is connected to the processing mechanism to push the processing mechanism when the protective part is opened, and the buffer part is used to resist the explosion force of the buffer valve stem.

[0011] Furthermore, the protection part includes:

[0012] A supporting guide part is arranged above the welding machine and located outside the motor;

[0013] A first shield is arranged translationally on the supporting guide part and is located outside the three-jaw chuck;

[0014] A second shield is translationally arranged on the supporting guide part and is located at a symmetrical position of the first shield;

[0015] A corrugated cover is passed through a side of the second cover away from the first cover and is fixedly connected thereto;

[0016] A rubber sleeve fixed to an end of the corrugated cover away from the welding machine and close to the first protective cover;

[0017] There are two transparent covers, which are respectively fixed to the first cover and the second cover at one end away from the welding machine, and one of the transparent covers is fixedly connected to the corrugated cover and the rubber sleeve.

[0018] Further, the buffer portion includes:

[0019] The support plate is fixed on the side of the motor away from the welding machine and is located outside the output end of the motor

[0020] A connecting block, fixed on the inner side of the second protective cover;

[0021] There are three arc plates, one of which is fixedly connected to the connecting block, and the remaining two arc plates are symmetrically arranged on the supporting plate;

[0022] A storage bag is arranged on the outer side of the arc plate;

[0023] The nozzle is fixedly installed through the end of the storage bag away from the support plate;

[0024] A plug is embedded in the inner side of the nozzle;

[0025] A connecting rope, one end of which is fixed to the plug and the other end of which is fixedly connected to the storage bag;

[0026] The buffer part is arranged to penetrate the arc plate and move horizontally, is located on the inner side of the arc plate, and is connected with the slag cleaning mechanism.

[0027] Further, the buffer component comprises:

[0028] A sealing ring is installed through the arc plate and the side of the storage bag close to the arc plate;

[0029] A guide rod is provided, penetrating through the sealing ring and fitting with the sealing ring;

[0030] A disturbance plate is fixed to one end of the guide rod and is located inside the storage capsule;

[0031] A force-bearing plate is fixed to the other end of the guide rod and is located on the inner side of the arc plate;

[0032] A connecting ring, fixed on the outer side of the load-bearing plate;

[0033] A pulling rope, one end of which is fixedly connected to the connecting ring.

[0034] Further, the support and guide mechanism includes a support portion and a guide and pull portion, the support portion is connected to the three-jaw chuck and the guide and pull portion, the guide and pull portion is connected to the protection portion, and the support portion includes:

[0035] There are three reeds, which are symmetrically fixed on a side of the three-jaw chuck away from the welding machine;

[0036] A support plate fixed to an end of the spring away from the three-jaw chuck;

[0037] There are three flaps, and the three flaps are respectively fixed to one end of the support plate away from the spring leaf;

[0038] The arc cone plate is fixed to the end of the petal plate away from the welding machine.

[0039] Further, the pulling guide portion includes:

[0040] There are two groups of arc-shaped C plates, each group of which has three arc-shaped C plates, and the two groups of arc-shaped C plates are fixed on the outside of the flap plate;

[0041] There are two rubber bands, and the two rubber bands are respectively mounted on the inner side of each group of the arc-shaped C-plates;

[0042] Drawstring, one end of which is fixed to the outside of the rubber band;

[0043] There are two pull plates, which are respectively fixed at the other end of the pull rope, and the pull plates are fixedly connected to the transparent cover.

[0044] Further, the slag cleaning mechanism includes a knocking part and a blowing part, the knocking part is connected to the three-jaw chuck and the buffer part, and the blowing part is connected to the buffer part, and the knocking part includes:

[0045] There are a plurality of first triangular blocks, and the plurality of first triangular blocks are evenly distributed on the outside of the three-jaw chuck and located above the support plate;

[0046] The frame plate is fixed on the side of the arc plate close to the three-jaw chuck;

[0047] The spring plate is fixed to one end of the frame plate away from the arc plate and connected to the other end of the pulling rope;

[0048] The second triangular block is fixed on a side of the spring plate close to the three-jaw chuck and is in contact with the first triangular block;

[0049] The actuator is fixed at the end of the spring plate away from the frame plate to strike the welding surface of the valve stem.

[0050] Further, the blowing volume part comprises:

[0051] The fan is fixed on the support plate and fixedly connected to the arc plate close to the first shield;

[0052] The rubber ring is fixed on the inner side of the support plate and fits with the outer side of the three-jaw chuck;

[0053] An oblique opening is opened through the interior of the support plate and is located near the second shield;

[0054] The bucket is fixed on the side of the support plate close to the welding machine and corresponds to the position of the bevel;

[0055] The through cover is fixed at the end of the bucket away from the supporting plate.

[0056] Further, the processing mechanism includes a linkage part and a push part, the linkage part is connected to the protection part, and the push part is connected to the blowing part, and the linkage part includes:

[0057] A handle, fixed on the outside of the first protective cover and the second protective cover, and fixedly connected to the transparent cover;

[0058] A support ring is fixed to the outside of the handle fixed on the outside of the second shield;

[0059] A spring, one end of which is fixed to the side of the support ring close to the welding machine;

[0060] The sleeve is fixed on the side of the support ring close to the welding machine and is located on the outside of the spring;

[0061] A cover is fixed to a side of the sleeve away from the support ring and connected to the other end of the spring;

[0062] Insert the rod, fixed on the outside of the cover.

[0063] Further, the pushing part includes:

[0064] The guide cover is fixed on a side of the through cover away from the supporting plate and is connected with the through cover;

[0065] The baffle plate movably penetrates the side of the guide cover away from the motor and fits with the through cover;

[0066] A guide groove is opened through one side of the guide cover and corresponds to the position of the baffle;

[0067] The L plate is fixed to one side of the baffle plate, movably passes through the guide groove, and is located below the insertion rod;

[0068] The socket is opened through the interior of the L-plate.

[0069] The beneficial effects of the present invention are:

[0070] By setting up the explosion-proof mechanism and the support guide mechanism, the staff can open the protection part set in the explosion-proof mechanism, make the valve stem to be welded contact with the support part set in the support guide mechanism and push it to open, so that the support part fits with the valve stem, and then put it in the center of the three-jaw chuck under the support of the support part and clamp it with the three-jaw chuck, then start the motor to rotate slowly, so that the support part and the valve stem rotate with the three-jaw chuck, and at the same time pull the protection part through the guide part to move and close along the support guide part, so as to cover the three-jaw chuck, welding gun and valve stem;

[0071] When the valve stem reacts abnormally during welding and causes an explosion, the exploding valve stem will be intercepted by the buffer part and the protective part set in the explosion-proof mechanism. At the same time, the impact force will be first applied to the buffer part, so that the buffer part cooperates with the buffer parts set therein to buffer the external force, thereby preventing the exploding valve stem from splashing to the outside during welding, providing protective buffering, and then playing an explosion-proof role, improving welding safety;

[0072] By setting up a slag cleaning mechanism, after welding, the staff needs to start the fan in the blowing volume provided in the slag cleaning mechanism, and control the executive part to adjust the knocking position of the knocking part, so that the knocking end of the executive part is aligned with the welding area of ​​the valve stem, so that the three-jaw chuck pushes the knocking part to knock the welding area reciprocatingly while rotating, so that the welding slag generated in the welding area is knocked off, and at the same time, the fan will blow the welding slag to move it to the through cover provided in the blowing volume for storage, thereby facilitating the cleaning of the welding slag;

[0073] By setting up a processing mechanism, after the welding slag is cleaned, the staff can open the protective part along the supporting guide part through the linkage part, and push the linkage part downward at the same time to connect the linkage part with the pushing part, and then push the pushing part through the linkage part while opening the protective part, so that the pushing part is moved out of the blowing part, thereby opening the discharge port of the blowing part, so that the welding slag contained in the blowing part falls and is discharged along the guide cover set in the pushing part, thereby facilitating the discharge of the contained welding slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the explosion-proof valve stem welding device of the present invention;

[0075] Figure 2 It is a three-dimensional structural schematic diagram of the welding machine, housing, buffer part, supporting and guiding parts, supporting and guiding mechanism, slag cleaning mechanism and blowing volume part combination of the present invention;

[0076] Figure 3 It is a three-dimensional exploded view of the motor, three-jaw chuck and support plate combination of the present invention;

[0077] Figure 4 It is a schematic diagram of the three-dimensional structure of the skateboard of the present invention;

[0078] Figure 5 It is a schematic diagram of the three-dimensional structure of the fan and arc plate combination of the present invention;

[0079] Figure 6 It is a three-dimensional exploded view of the arc plate, the disturbance plate and the storage bag combination of the present invention;

[0080] Figure 7 It is a schematic diagram of the three-dimensional structure of the storage capsule of the present invention;

[0081] Figure 8 It is a three-dimensional structural schematic diagram of the supporting and guiding mechanism of the present invention;

[0082] Fig. 9 It is a three-dimensional structural schematic diagram of the combination of the buffer part, the supporting and guiding parts, the supporting and guiding mechanism, the slag cleaning mechanism and the blowing volume part of the present invention;

[0083] Fig.10 It is a three-dimensional structural schematic diagram of the pull rope, the knocking part and the execution part combination of the present invention;

[0084] Fig.11 It is a three-dimensional exploded view of the push portion and the through cover combination of the present invention;

[0085] Fig.12 It is a three-dimensional exploded view of the linkage part of the present invention.

[0086] Description of reference numerals:

[0087] In the figure: 1, welding machine; 2, housing; 3, rubber ring; 4, motor; 5, support plate; 6, three-jaw chuck; 7, mechanical arm; 8, welding gun; 9, bracket; 10, guide plate; 11, slide plate; 12, first protective cover; 13, second protective cover; 14, corrugated cover; 15, rubber sleeve; 16, transparent cover; 17, protective film; 18, support plate; 19, connecting block; 20, arc plate; 21, storage bag; 22, nozzle; 23, plug; 24, connecting rope; 25, sealing ring; 26, guide rod; 27, disturbance plate; 28, force plate; 29, reed; 30, support plate; 31, flap plate; 32 , arc cone plate; 33, arc C plate; 34, rubber band; 35, pull rope; 36, pull plate; 37, first triangle block; 38, frame plate; 39, spring plate; 40, pull rope; 41, connecting ring; 42, second triangle block; 43, sleeve ring; 44, lifting rod; 45, arc rod; 46, electric rod; 47, knocking head; 48, fan; 49, oblique mouth; 50, bucket; 51, guide cover; 52, through cover; 53, guide groove; 54, baffle; 55, L plate; 56, socket; 57, handle; 58, support ring; 59, spring; 60, sleeve; 61, cover; 62, plug rod. DETAILED DESCRIPTION

[0088] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0089] like Figures 1 to 12 As shown, an embodiment of the present invention provides an explosion-proof valve stem welding device, comprising a welding machine 1 and a welding gun 8 electrically connected to the welding machine 1, a motor 4 is arranged above the welding machine 1, and a three-jaw chuck 6 is connected to the output end of the motor 4, characterized in that it also includes:

[0090] The explosion-proof mechanism is fixed on the motor 4 and is located outside the three-jaw chuck 6 to prevent the valve stem from exploding and causing damage to the outside world during welding;

[0091] The supporting and guiding mechanism is arranged on the three-jaw chuck 6 and connected with the explosion-proof mechanism to support the guiding valve stem and close the explosion-proof mechanism;

[0092] A slag cleaning mechanism is arranged outside the three-jaw chuck 6 and connected to the explosion-proof mechanism to clean the welding slag after welding;

[0093] The processing mechanism is arranged outside the welding machine 1 and is connected to the explosion-proof mechanism and the slag removal mechanism to discharge the processed welding slag when the explosion-proof mechanism is opened;

[0094] The explosion-proof mechanism includes a protective part and a buffer part. The buffer part is located on the inner side of the protective part and is connected to the protective part. The protective part is fixedly connected to the motor 4 to cover the three-jaw chuck 6 during welding, and the protective part is connected to the processing mechanism to push the processing mechanism when the protective part is opened. The buffer part is used to resist the explosion force of the buffer valve stem.

[0095] Specifically, the outer side of the welding machine 1 is covered with a shell 2, the motor 4 is fixed on the top of the shell 2, a support plate 5 is fixed on the top of the motor 4, and the support plate 5 does not contact the output end of the motor 4, a mechanical arm 7 is fixed on the side of the shell 2 close to the motor 4, and the end of the mechanical arm 7 away from the shell 2 is fixedly connected to the welding gun 8, and the shell 2 can be firmly placed at the workplace, thereby providing firm support and protection for the welding machine 1.

[0096] In actual application of this embodiment: the welding machine 1 can supply power to the welding gun 8 under the operation of the staff, and adjust the welding current as needed, and the mechanical arm 7 can provide support for the welding gun 8 under the support of the shell 2. The staff needs to use the three-jaw chuck 6 to clamp and fix the valve stem to be welded, and start the motor 4 under the support of the shell 2, so that the motor 4 drives the three-jaw chuck 6 and the clamped valve stem to rotate slowly. At the same time, the staff needs to start the mechanical arm 7 to control the welding gun 8 to move and contact the welding area of ​​the valve stem to weld the valve stem.

[0097] As a preferred embodiment of the present invention, the protection part includes:

[0098] A supporting guide part is arranged above the welding machine 1 and located outside the motor 4;

[0099] A first shield 12 is arranged on the supporting guide part in a translational manner and is located outside the three-jaw chuck 6;

[0100] The second shield 13 is translationally arranged on the supporting guide part and is located at a symmetrical position of the first shield 12;

[0101] The corrugated cover 14 penetrates through a side of the second cover 13 away from the first cover 12 and is fixedly connected thereto;

[0102] The rubber sleeve 15 is fixed to one end of the corrugated cover 14 away from the welding machine 1 and close to the first protective cover 12;

[0103] There are two transparent covers 16 , which are respectively fixed to the first protective cover 12 and the second protective cover 13 at one end away from the welding machine 1 , and one of the transparent covers 16 is fixedly connected to the corrugated cover 14 and the rubber sleeve 15 .

[0104] Specifically, the support and guide parts include:

[0105] The bracket 9 is symmetrically fixed on a side of the housing 2 close to the motor 4;

[0106] A guide plate 10 is fixed to an end of the bracket 9 away from the housing 2;

[0107] The slide plate 11 is fixed on the outside of the first shield 12 and the second shield 13 and is located on the inside of the guide plate 10 , and is connected to the guide plate 10 in a translationally movably manner.

[0108] The bracket 9 can provide a stable support for the guide plate 10 under the support of the shell 2, so that the guide plate 10 provides a mobile support and a guiding function for the slide plate 11. At the same time, the slide plate 11 can provide support for the first shield 12 and the second shield 13 under the support of the guide plate 10. The first shield 12 and the second shield 13 can provide protection for the facilities installed inside them, and can stably support the transparent cover 16. The transparent cover 16 is made of a transparent material, which can facilitate the staff to observe the working conditions in the protection part. The second shield 13 and the transparent cover 16 can cooperate to stably support the first shield 12 and the second shield 13. The corrugated cover 14 is firmly supported and located on the outside of the robot arm 7. When the second shield 13 moves toward the first shield 12, the corrugated cover 14 will be stretched and unfolded by the first shield 12 under the resistance of the robot arm 7, and the transparent cover 16 and the corrugated cover 14 can provide stable support for the rubber sleeve 15. The rubber sleeve 15 can be deformed under the action of external force and has a certain elasticity. When the robot arm 7 adjusts the position of the welding gun 8, it will push the rubber sleeve 15 and force the rubber sleeve 15 to deform. The setting of the rubber sleeve 15 can prevent the robot arm 7 from being obstructed when adjusting the position of the welding gun 8.

[0109] The buffer part includes:

[0110] The support plate 18 is fixed to the side of the motor 4 away from the welding machine 1 and is located outside the output end of the motor 4.

[0111] A connecting block 19 is fixed on the inner side of the second shield 13;

[0112] There are three arc plates 20, one of which is fixedly connected to the connecting block 19, and the remaining two arc plates 20 are symmetrically arranged on the supporting plate 18;

[0113] The storage bag 21 is arranged on the outer side of the arc plate 20;

[0114] The nozzle 22 penetrates through the end of the storage bag 21 away from the support plate 18 and is fixedly installed;

[0115] A plug 23 is embedded in the inner side of the nozzle 22;

[0116] A connecting rope 24, one end of which is fixed to the plug 23, and the other end of which is fixedly connected to the storage bag 21;

[0117] The buffer part is arranged to be translated through the arc plate 20 , is located on the inner side of the arc plate 20 , and is connected to the slag cleaning mechanism.

[0118] Specifically, the motor 4 can provide stable support for the support plate 18, the second protective cover 13 can stably support the connecting block 19, so that the connecting block 19 can provide stable support for one of the arc plates 20, and the support plate 18 can provide stable support for the remaining two arc plates 20, the arc plate 20 can provide support for the storage bag 21, the storage bag 21 can provide stable support for the nozzle 22, the plug 23 can plug the nozzle 22 to play a sealing role, and the connecting rope 24 can provide a connection for the plug 23 under the support of the storage bag 21 to prevent the plug 23 from being lost after being sprayed out of the nozzle 22. Before using the device, the staff needs to pull the connecting rope 24 first to pull the plug 23 out of the nozzle 22, and then inject liquid into the storage bag 21 from the nozzle 22, and then plug the plug 23 back.

[0119] Buffer parts include:

[0120] The sealing ring 25 penetrates the arc plate 20 and the storage bag 21 and is installed on a side close to the arc plate 20;

[0121] The guide rod 26 is arranged to penetrate the sealing ring 25 and fit with the sealing ring 25;

[0122] The disturbance plate 27 is fixed to one end of the guide rod 26 and is located inside the storage bag 21;

[0123] The force bearing plate 28 is fixed to the other end of the guide rod 26 and is located on the inner side of the arc plate 20;

[0124] A connecting ring 41 is fixed on the outer side of the force bearing plate 28;

[0125] One end of the pulling rope 40 is fixedly connected to the connecting ring 41 .

[0126] Specifically, the arc plate 20 and the storage bag 21 can provide stable support for the sealing ring 25, the sealing ring 25 can provide a through channel for the guide rod 26, and has a certain elasticity, can be deformed under the action of external force, and can play a role of sealing and waterproofing when the sealing ring 25 and the guide rod 26 are in contact, the guide rod 26 can provide stable support for the disturbance plate 27, and can stably support the force-bearing plate 28, and the arc plate 20 can provide a moving space for the force-bearing plate 28, the guide rod 26 can provide a moving guide for the force-bearing plate 28, the force-bearing plate 28 can stably support the connecting ring 41, and the connecting ring 41 can be connected to the spring plate 39 by a pull rope 40, the first protective cover 12 and the second protective cover 13 are provided with a rubber strip on the side close to each other, and the second protective cover 13 is provided with an opening on the side away from the arc plate 20, which can facilitate the staff to operate the three-jaw chuck 6 with tools, and a protective film 17 is fixed on the outside of the second protective cover 13, and the protective film 17 covers the opening.

[0127] In actual application of this embodiment, the staff can push the protective film 17 to deform according to the needs of actual conditions, so as to lift the protective film 17 to reveal the opening, and then pass the workpiece through the opening to connect the second protective cover and the three-jaw chuck 6, so as to control the three-jaw chuck 6 to clamp or release the valve stem placed in the three-jaw chuck 6 by the rotating tool, and the second protective cover 13 will drive the arc plate 20 connected to it to move together through the connecting block 19 when it moves, and when the first protective cover 12 and the second protective cover 13 drive the slide plate 11 to approach and fit each other along the guide plate 10, the first protective cover 12, the second protective cover 13, the transparent cover 16, the rubber sleeve 15 and the corrugated cover 14 will cooperate to cover the arc plate 20, the fan 48, the motor 4, the three-jaw chuck 6, the valve stem clamped on the three-jaw chuck 6, the robot arm 7 and the welding gun 8 and provide protection, and when the valve stem reacts abnormally during welding and causes an explosion, the splashes and impact force generated will be with the force The plate 28 contacts the plate 28, and the force-bearing plate 28 will push the guide rod 26 under the action of external force. At the same time, the force-bearing plate 28 will pull the draw rope 40 through the connecting ring 41, so that the draw rope 40 pulls the spring plate 39 under the action of external force, thereby causing the spring plate 39 to bend and deform under the action of external force and the support of the frame plate 38, and consume part of the impact force by elastic force. At the same time, the guide rod 26 will push the sealing ring 25 to deform under the action of external force and move in the direction away from the three-jaw chuck 6. At the same time, the guide rod 26 will drive the disturbance plate 27 to move inside the storage bag 21, so that the disturbance plate 27 uses the external force to push the water in the storage bag 21 and transmits the impact force to the water in the storage bag 21. The water will transmit the impact force to the plug 23, so that the plug 23 is ejected from the inside of the nozzle 22 to the outside under the action of external force. At the same time, the water will also pass through the nozzle 22 and be ejected to the outside, thereby pouring the external force to the outside, thereby achieving the effect of buffering the external force.

[0128] In addition, the first arc cover, the second protective cover 13, the transparent cover 16, the rubber sleeve 15, the protective film 17 and the corrugated cover 14 can cooperate to provide a shielding effect for other explosion spatters, thereby preventing the spatters produced by the explosion from splashing to the outside, and thus preventing the exploded valve stem from splashing to the outside during welding, providing a protective buffer, playing an explosion-proof role, and improving welding safety.

[0129] As a preferred embodiment of the present invention, the support and guide mechanism includes a support portion and a guide and pull portion, the support portion is connected to the three-jaw chuck 6 and the guide and pull portion, the guide and pull portion is connected to the protection portion, and the support portion includes:

[0130] There are three reeds 29, which are symmetrically fixed on a side of the three-jaw chuck 6 away from the welding machine 1;

[0131] A support plate 30 is fixed to an end of the spring 29 away from the three-jaw chuck 6;

[0132] There are three flaps 31, and the three flaps 31 are respectively fixed to one end of the support plate 30 away from the reed 29;

[0133] The arc cone plate 32 is fixed to the end of the flap plate 31 away from the welding machine 1 .

[0134] Specifically, the three-jaw chuck 6 can provide stable support for one end of the reed 29. The reed 29 has a certain elasticity and can be deformed under the action of external force. It will rebound after the external force disappears. The support plate 30 can provide support for the flap plate 31 under the support of the reed 29. The three flap plates 31 can form an annular structure. The flap plate 31 can provide support for the arc cone plate 32. The arc cone plate 32 has a certain inclination angle and can form an annular structure under the support of the flap plate 31. The arc cone plate 32 can use its own inclination angle to provide a guiding effect for the valve stem, so that the valve stem can use its own diameter to push the arc cone plate 32 during the process of inserting downward into the three-jaw chuck 6.

[0135] The pull guide includes:

[0136] There are two groups of arc-shaped C-plates 33, each group of arc-shaped C-plates 33 has three, and the two groups of arc-shaped C-plates 33 are fixed on the outer side of the petal plate 31;

[0137] There are two rubber bands 34, and the two rubber bands 34 are respectively mounted on the inner side of each set of arc-shaped C-plates 33;

[0138] A pull rope 35, one end of which is fixed to the outside of the rubber band 34;

[0139] There are two pull plates 36 , which are respectively fixed to the other end of the pull rope 35 , and the pull plates 36 are fixedly connected to the transparent cover 16 .

[0140] Specifically, the flap 31 can provide stable support for the arc C plate 33, and each group of the arc C plates 33 can form an annular structure under the support of the flap 31. The arc C plate 33 can provide a housing space and positioning function for the rubber band 34, and can use friction to push the rubber band 34 to rotate. The friction between the rubber band 34 and the arc C plate 33 can pull the first shield 12 and the second shield 13 through the pull rope 35 and the pull plate 36, and the rubber band 34 has a certain elasticity and can be deformed under the action of external force. When the flap 31 and the arc cone plate 32 are stretched open by the action of external force, the rubber band 34 will be expanded through the arc C plate 33, so that the rubber band 34 is stretched and deformed. The rubber band 34 can transmit the external force to the pull rope 35, so that the pull rope 35 pulls the first shield 12 and the second shield 13 through the pull plate 36 under the action of external force.

[0141] In the actual application of this embodiment, the staff can insert the valve stem to be welded through the gap between the first protective cover 12 and the second protective cover 13 into the inner side of the arc cone plate 32 according to the actual needs, and push the valve stem downward, so that the valve stem can use the inclination angle of the arc cone plate 32 to push the arc cone plate 32 and the flap plate 31 to expand under the action of external force, so that the arc cone plate 32 and the flap plate 31 can push the reed 29 through the support plate 30 under the action of external force, so that the reed 29 can be pushed to bend and deform and store energy under the support of the three-jaw chuck 6 by using external force, and at the same time, the flap plate 31 will drive the arc C plate 33 to expand together under the action of external force. The elastic band 34 is stretched to store energy, so that the valve stem passes through the flap plate 31 and is inserted into the inner side of the three-jaw chuck 6. At the same time, the elastic band 34 uses its own rebound force to squeeze the arc-shaped C plate 33 to move toward the center line of the three-jaw chuck 6, and the spring 29 uses its own rebound force to push the support plate 30, so that the support plate 30 pushes the flap plate 31 to move toward the center line of the three-jaw chuck 6 under the action of external force, so that the flap plate 31 contacts the valve stem and provides support for the valve stem, so that the valve stem can be kept at the center position of the three-jaw chuck 6, thereby facilitating the three-jaw chuck 6 to clamp the valve stem and prevent the valve stem from being crooked;

[0142] When the three-jaw chuck 6 clamps the valve stem, the staff can start the motor 4, so that the motor 4 drives the clamped valve stem to rotate together through the three-jaw chuck 6. At the same time, the three-jaw chuck 6 will drive the arc C plate 33 to rotate together through the spring 29, the support plate 30 and the flap plate 31 under the action of external force, so that the arc C plate 33 drives the rubber band 34 to rotate together under the action of external force, so that the rubber band 34 pulls the pull rope 35 under the action of external force, and cooperates with the rotational power to make the pull rope 35 reel and wrap around the inner side of the arc C plate 33. At this time, the pull rope 35 will pull the first shield 12 and the second shield 13 through the pull plate 36 under the action of external force, so that the first shield 12 and the second shield 13 translate and approach each other under the action of external force. When the first shield 12 and the second shield 13 are fitted together, the force generated by their mutual resistance will be transmitted to the rubber band 34 through the pull plate 36 and the pull rope 35, so that the rubber band 34 can overcome the friction with the arc C plate 33, so that the arc C plate 33 will no longer drive the rubber band 34 to rotate. However, due to the continuous rotation of the three-jaw chuck 6, an external force will continue to be applied to the rubber band 34 to prevent the rubber band 34 from rotating in the opposite direction of the arc C plate 33, thereby keeping the rubber band 34 still, so that the first shield 12 and the second shield 13 can be automatically moved and closed during the valve stem welding operation.

[0143] In another preferred embodiment of the present invention, the slag cleaning mechanism includes a striking part and a blowing part, the striking part is connected to the three-jaw chuck 6 and the buffer part, and the blowing part is connected to the buffer part, and the striking part includes:

[0144] There are multiple first triangular blocks 37, and the multiple first triangular blocks 37 are evenly distributed on the outside of the three-jaw chuck 6 and located above the support plate 18;

[0145] The frame plate 38 is fixed to a side of the arc plate 20 close to the three-jaw chuck 6;

[0146] The spring plate 39 is fixed to one end of the frame plate 38 away from the arc plate 20 and connected to the other end of the pull rope 40;

[0147] The second triangular block 42 is fixed to a side of the spring plate 39 close to the three-jaw chuck 6 and in contact with the first triangular block 37;

[0148] The actuator is fixed to the end of the spring plate 39 away from the frame plate 38 to strike the welding surface of the valve stem.

[0149] Specifically, the three-jaw chuck 6 can provide stable support for the first triangular block 37 under the support of the motor 4. The first triangular block 37 has a certain inclination angle, and the frame plate 38 can stably support the spring plate 39 under the support of the arc plate 20, so that the spring plate 39 can provide support for the second triangular block 42. The second triangular block 42 also has a certain inclination angle, and the inclined surface of the second triangular block 42 can fit the inclined surface of the first triangular block 37.

[0150] Blowing unit includes:

[0151] The fan 48 is fixed on the support plate 18 and is fixedly connected to the arc plate 20 close to the first shield 12;

[0152] The rubber ring 3 is fixed on the inner side of the support plate 18 and fits with the outer side of the three-jaw chuck 6;

[0153] The oblique opening 49 is opened through the interior of the support plate 18 and is located near the second shield 13;

[0154] The bucket 50 is fixed on the side of the support plate 18 close to the welding machine 1 and corresponds to the position of the oblique opening 49;

[0155] The cover 52 is fixed to an end of the bucket 50 away from the support plate 18 .

[0156] Specifically, the fan 48 moves through the first protective cover 12, and the support plate 18 can provide stable support for the fan 48 under the support of the motor 4. The support plate 18 can provide support for the rubber ring 3. The rubber ring 3 has a certain elasticity. When the three-jaw chuck 6 rotates, it will push the rubber ring 3 to deform, so that the three-jaw chuck 6 can rotate, and the rubber ring 3 will use its own elastic force to fit with the three-jaw chuck 6. The support plate 18 and the rubber ring 3 can provide mobile support for the welding slag, and the support plate 18 can provide an opening space for the oblique mouth 49 and provide support for the discharge bucket 50. The oblique mouth 49 can receive the welding slag and provide a channel for the welding slag to be discharged into the discharge bucket 50. The discharge bucket 50 can stably support the through cover 52, and the through cover 52 can provide a channel for the welding slag to enter the guide cover 51. The through cover 52 can provide support for the baffle 54, and can cooperate with the baffle 54 to provide a temporary storage space for the welding slag.

[0157] In actual application of this embodiment, after the welding work is completed, the staff can control the extension of the lifting rod 44 under the support of the frame plate 38, the spring plate 39 and the collar 43, so that the lifting rod 44 pushes the arc rod 45 upward, and the arc rod 45 pushes the electric rod 46 upward under the action of external force, so that the electric rod 46 drives the knocking head 47 to rise to the welding area of ​​the corresponding valve stem. At the same time, the staff can control the extension of the electric rod 46 according to the needs of actual conditions, so that the electric rod 46 uses the telescopic end to push the knocking head 47 to approach the welded valve stem clamped by the three-jaw chuck 6, so that the knocking head 47 can contact the welding area of ​​the valve stem. At the same time, it is necessary to keep the motor 4 started to drive the three-jaw chuck 6 to rotate continuously, so that the three-jaw chuck 6 drives the first triangular block 37 to rotate, so that the first triangular block 37 uses the rotational power and its own inclination angle to push the second triangular block 42 away from the three-jaw chuck. The spring plate 39 is moved in the direction of the three-jaw chuck 6, and the second triangular block 42 uses external force to push the spring plate 39 to bend and store energy under the support of the frame plate 38. When the first triangular block 37 is separated from the second triangular block 42, the spring plate 39 uses the rebound force under the support of the frame plate 38 to push the second triangular block 42 to move in the direction close to the three-jaw chuck 6 and fit with the three-jaw chuck 6. The three-jaw chuck 6 rotates continuously and uses multiple first triangular blocks 37 to move back and forth in this way, so that the second triangular block 42 pushes the spring plate 39 back and forth, so that the spring plate 39 drives the lifting rod 44 to move back and forth through the ring 43. The lifting rod 44 drives the electric rod 46 to move back and forth through the arc rod 45 under the action of external force, so that the electric rod 46 drives the knocking head 47 to move back and forth, and knocks the welding area of ​​the valve stem back and forth during the reciprocating movement, so that the knocking head 47 can knock off the welding slag in the welding area;

[0158] At the same time, the staff needs to start the fan 48 under the support of the arc plate 20 and the support plate 18, so that the fan 48 can blow outside air into the inner side of the first protective cover 12, so that the air is blown in the direction close to the second protective cover 13, and at the same time, the wind force is used to knock the welding slag that falls on the three-jaw chuck 6 and the support plate 18, and blow it in the direction close to the second protective cover 13 under the support of the support plate 18 and the rubber ring 3, so that the welding slag can be moved to the inner side of the inclined mouth 49 under the resistance and guiding action of the arc plate 20, the force plate 28 and the second protective cover 13 during the movement. The welding slag that falls into the inclined mouth 49 will fall into the inner side of the bucket 50 under the action of gravity and the inclination angle of the inclined mouth 49, and fall into the inner side of the through hood 52 along the bucket 50, so that the through hood 52 and the baffle 54 cooperate to temporarily store the welding slag.

[0159] In another preferred embodiment of the present invention, the processing mechanism includes a linkage part and a push part, the linkage part is connected to the protection part, and the push part is connected to the blowing part, and the linkage part includes:

[0160] A handle 57 is fixed on the outside of the first protective cover 12 and the second protective cover 13 and is fixedly connected to the transparent cover 16;

[0161] A support ring 58 is fixed to the outside of a handle 57 fixed to the outside of the second shield 13;

[0162] A spring 59, one end of which is fixed to a side of the support ring 58 close to the welding machine 1;

[0163] The sleeve 60 is fixed to a side of the support ring 58 close to the welding machine 1 and is located outside the spring 59;

[0164] The cover 61 is fixed to the side of the sleeve 60 away from the support ring 58 and connected to the other end of the spring 59;

[0165] The insertion rod 62 is fixed on the outer side of the cover 61 .

[0166] Specifically, the cover 61 is located on the outside of the handle 57, the first protective cover 12 and the second protective cover 13 can provide stable support for the handle 57, the handle 57 can provide support for the support ring 58, the support ring 58 can stably support the spring 59, the spring 59 has a certain elasticity, can be stretched and stored under the action of external force, and will rebound after the external force disappears, and can provide support for the cover 61, the cover 61 can provide support for the sleeve 60, the sleeve 60 and the cover 61 can move up and down along the handle 57, the cover 61 can stably support the insertion rod 62, and can drive the insertion rod 62 to move up and down together.

[0167] The push part includes:

[0168] The guide cover 51 is fixed to a side of the through cover 52 away from the support plate 18 and is connected to the through cover 52;

[0169] The baffle 54 movably penetrates the side of the guide cover 51 away from the motor 4 and fits with the through cover 52;

[0170] A guide groove 53 is formed through one side of the guide cover 51 and corresponds to the position of the baffle 54;

[0171] The L plate 55 is fixed to one side of the baffle plate 54 and movably passes through the guide groove 53 and is located below the insertion rod 62;

[0172] The socket 56 is opened through the inside of the L plate 55 .

[0173] Specifically, the through cover 52 can provide stable support for the guide cover 51, the guide cover 51 can provide moving space and support and guidance for the welding slag, the baffle 54 can provide resistance and support for the welding slag, and the baffle 54 can provide support for the L-plate 55, the guide cover 51 can provide moving support for the baffle 54, the L-plate 55 can provide an opening space for the socket 56, and the socket 56 can be engaged with the insertion rod 62.

[0174] In the actual application of this embodiment, when the first shield 12 and the second shield 13 are fitted together and closed, the position of the insertion rod 62 corresponds to the position of the socket 56. In actual operation, the staff needs to place the trash can for processing welding slag under the guide cover 51 to receive the discharged welding slag. When the welding slag received in the trash can is full, it is necessary to remove the trash can for dumping. At this time, there is no welding slag to receive under the guide cover 51, and the baffle 54 needs to be fully inserted into the guide cover 51 to prevent the welding slag from being discharged. The staff can hold the handle 57 and the sleeve 60 after the welding slag is cleaned. The first shield 12 and the second shield 13 are pulled by the handle 57 and the sleeve 60, so that the first shield 12 and the second shield 13 move in opposite directions under the support and guidance of the guide plate 10 and the slide plate 11. At the same time, the first shield 12 and the second shield 13 pull the pull rope 35 through the pull plate 36, so that the pull rope 35 drives the rubber band 34 to overcome the friction with the arc C plate 33 under the action of external force, so that the rubber band 34 rotates on the inner side of the arc C plate 33, and then the rolled pull rope 35 is released, thereby realizing the opening of the first shield 12 and the second shield 13. At the same time, the staff needs to push the sleeve 60 downward as needed before pushing the second shield 13, so that the sleeve 60 pushes the cover 61 downward along the handle 57 under the action of external force, and then the cover 61 stretches the spring 59 to store energy under the action of external force and the support of the support ring 58 and the handle 57, and then the cover 61 drives the insertion rod 62 downward under the action of external force, so that the insertion rod 62 is inserted into the inner side of the socket 56 and connected with the L plate 55. When the second shield 13 is pushed to move in the direction away from the first shield 12, the second shield 13 will pass through the handle 57 The cover 61 drives the insertion rod 62 to move together, so that the insertion rod 62, under the action of external force, uses the fitting action with the socket 56 to push the L plate 55 to move away from the first protective cover 12, and then the L plate 55, under the action of external force and the guiding action of the guide groove 53, pushes the baffle 54 to move away from the motor 4, so that the baffle 54 gradually moves out of the guide cover 51, and then opens the passage between the through cover 52 and the guide cover 51, so that the welding slag temporarily stored in the through cover 52 can fall to the inner side of the guide cover 51, and the welding slag is discharged into the trash can along the guide cover 51 for collection and treatment.

[0175] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. An explosion-proof valve stem welding device, comprising a welding machine (1) and a welding gun (8) electrically connected to the welding machine (1), wherein a motor (4) is arranged above the welding machine (1), and an output end of the motor (4) is connected to a three-jaw chuck (6), characterized in that: Also includes: An explosion-proof mechanism, fixed on the motor (4) and located outside the three-jaw chuck (6), to prevent the valve stem from exploding and causing damage to the outside world during welding; A support and guide mechanism, arranged on the three-jaw chuck (6) and connected to the explosion-proof mechanism, so as to support and guide the valve stem and close the explosion-proof mechanism; A slag cleaning mechanism, arranged outside the three-jaw chuck (6) and connected to the explosion-proof mechanism, for cleaning welding slag after welding; A processing mechanism, arranged outside the welding machine (1) and connected to the explosion-proof mechanism and the slag removal mechanism, so as to discharge the processed welding slag when the explosion-proof mechanism is opened; The explosion-proof mechanism comprises a protection part and a buffer part, the buffer part is located inside the protection part and is connected to the protection part, the protection part is fixedly connected to the motor (4) to cover the three-jaw chuck (6) during welding, and the protection part is connected to the processing mechanism to push the processing mechanism when the protection part is opened, and the buffer part is used to resist the explosion force of the buffer valve stem; The protection part comprises: A supporting guide part is arranged above the welding machine (1) and located outside the motor (4); A first shield (12) is arranged translationally on the supporting guide part and is located outside the three-jaw chuck (6); A second shield (13) is translationally arranged on the supporting guide part and is located at a symmetrical position of the first shield (12); A corrugated cover (14) passes through a side of the second cover (13) away from the first cover (12) and is fixedly connected thereto; A rubber sleeve (15) fixed to an end of the corrugated cover (14) away from the welding machine (1) and close to the first protective cover (12); Two transparent covers (16) are respectively fixed to the first protective cover (12) and the second protective cover (13) at one end away from the welding machine (1), and one of the transparent covers (16) is fixedly connected to the corrugated cover (14) and the rubber sleeve (15); The buffer portion comprises: A support plate (18) is fixed to a side of the motor (4) away from the welding machine (1) and is located outside the output end of the motor (4); A connecting block (19) fixed on the inner side of the second protective cover (13); There are three arc plates (20), one of which is fixedly connected to the connecting block (19), and the remaining two arc plates (20) are symmetrically arranged on the supporting plate (18); A storage bag (21) is arranged on the outer side of the arc plate (20); A nozzle (22) is fixedly installed through one end of the storage bag (21) away from the support plate (18); A plug (23) is embedded in the inner side of the nozzle (22); A connecting rope (24), one end of which is fixed to the plug (23) and the other end of which is fixedly connected to the storage bag (21); The buffer part is arranged to pass through the arc plate (20) and to be translated, and is located on the inner side of the arc plate (20) and is connected to the slag cleaning mechanism.

2. The explosion-proof valve stem welding device according to claim 1, characterized in that: The buffer part comprises: A sealing ring (25) is installed through the arc plate (20) and the storage bag (21) on a side close to the arc plate (20); A guide rod (26) is arranged to penetrate the sealing ring (25) and fit the sealing ring (25); A disturbance plate (27) is fixed to one end of the guide rod (26) and is located inside the storage bag (21); A force-bearing plate (28) is fixed to the other end of the guide rod (26) and is located on the inner side of the arc plate (20); A connecting ring (41) is fixed on the outer side of the load-bearing plate (28); One end of the pulling rope (40) is fixedly connected to the connecting ring (41).

3. The explosion-proof valve stem welding device according to claim 2, characterized in that: The supporting and guiding mechanism comprises a supporting portion and a guiding portion, wherein the supporting portion is connected to the three-jaw chuck (6) and the guiding portion, and the guiding portion is connected to the protective portion. The supporting portion comprises: There are three reeds (29), and the three reeds (29) are symmetrically fixed on a side of the three-jaw chuck (6) away from the welding machine (1); A support plate (30) fixed to an end of the spring leaf (29) away from the three-jaw chuck (6); There are three flap plates (31), and the three flap plates (31) are respectively fixed to one end of the support plate (30) away from the reed (29); The arc cone plate (32) is fixed to an end of the flap plate (31) away from the welding machine (1).

4. The explosion-proof valve stem welding device according to claim 3, characterized in that: The pulling guide portion comprises: The arc-shaped C-plates (33) are provided in two groups, each group of the arc-shaped C-plates (33) having three arc-shaped C-plates (33), and the two groups of the arc-shaped C-plates (33) are fixed on the outer sides of the flap plates (31); There are two rubber bands (34), and the two rubber bands (34) are respectively mounted on the inner side of each group of the arc-shaped C-plates (33); A pull rope (35), one end of which is fixed to the outside of the rubber band (34); There are two pull plates (36), the two pull plates (36) are respectively fixed to the other end of the pull rope (35), and the pull plates (36) are fixedly connected to the transparent cover (16).

5. The explosion-proof valve stem welding device according to claim 4, characterized in that: The slag cleaning mechanism comprises a striking part and a blowing part, wherein the striking part is connected to the three-jaw chuck (6) and the buffer part, and the blowing part is connected to the buffer part, and the striking part comprises: A first triangular block (37), comprising a plurality of first triangular blocks (37), the plurality of first triangular blocks (37) being evenly distributed on the outside of the three-jaw chuck (6) and located above the support plate (18); A frame plate (38) is fixed to a side of the arc plate (20) close to the three-jaw chuck (6); A spring plate (39) is fixed to one end of the frame plate (38) away from the arc plate (20) and connected to the other end of the pulling rope (40); A second triangular block (42) is fixed to a side of the spring plate (39) close to the three-jaw chuck (6) and is in contact with the first triangular block (37); The actuator is fixed to the end of the spring plate (39) away from the frame plate (38) to strike the welding surface of the valve stem.

6. The explosion-proof valve stem welding device according to claim 5, characterized in that: The blowing volume part comprises: A fan (48) is fixed on the support plate (18) and is fixedly connected to the arc plate (20) close to the first shield (12); A rubber ring (3) is fixed on the inner side of the support plate (18) and is in contact with the outer side of the three-jaw chuck (6); An oblique opening (49) is opened through the interior of the support plate (18) and is located near the second shield (13); A bucket (50) is fixed to a side of the support plate (18) close to the welding machine (1) and corresponds to the position of the bevel (49); The through cover (52) is fixed to one end of the row bucket (50) away from the supporting plate (18).

7. The explosion-proof valve stem welding device according to claim 6, characterized in that: The processing mechanism includes a linkage part and a push part, the linkage part is connected to the protection part, and the push part is connected to the blowing part, and the linkage part includes: A handle (57) is fixed on the outside of the first protective cover (12) and the second protective cover (13), and is fixedly connected to the transparent cover (16); A support ring (58) fixed to the outside of a handle (57) fixed outside the second shield (13); A spring (59), one end of which is fixed to a side of the support ring (58) close to the welding machine (1); A sleeve (60) is fixed to a side of the support ring (58) close to the welding machine (1) and is located outside the spring (59); A cover (61) is fixed to a side of the sleeve (60) away from the support ring (58) and connected to the other end of the spring (59); The insertion rod (62) is fixed on the outer side of the cover (61).

8. The explosion-proof valve stem welding device according to claim 7, characterized in that: The pushing part comprises: A guide cover (51) is fixed to a side of the through cover (52) away from the support plate (18) and is in communication with the through cover (52); A baffle (54) movably penetrates a side of the guide cover (51) away from the motor (4) and is in contact with the through cover (52); A guide groove (53) is formed through one side of the guide cover (51) and corresponds to the position of the baffle (54); An L-plate (55) is fixed to one side of the baffle (54), movably penetrates the guide groove (53), and is located below the insertion rod (62); The socket (56) is opened through the interior of the L plate (55).

Images