A variable speed welding device based on advanced manufacturing and capable of operating in a small space

Abstract

The present invention discloses a variable-speed welding device based on advanced manufacturing and operable in a small space, the welding device comprising a main body, a cover cap being sleeved on the main body, an intermediate bin being arranged inside the main body, an outlet being arranged in a interconnected manner on the lower inner wall of the intermediate bin, a threaded groove being arranged in a circular array and in interconnection on the inner wall of the intermediate bin, a screw being rotatably arranged in the threaded groove, the lower end of the screw being dynamically connected to a rotating knob assembly arranged on the main body, an annular sleeve groove opening outward being arranged on the upper end of the main body, an opening opening facing upward being arranged in a interconnected manner on the upper inner wall of the intermediate bin, an energy storage groove opening downward being arranged in the cover cap, the energy storage groove being sleeved on the sleeve groove, an energy storage assembly being arranged in the opening and the cover cap. This example aims to design a variable-speed welding device which is easy to carry and can perform welding operations in a small space.

Description

Technical Field

[0001] The invention relates to the technical field of advanced manufacturing and welding manufacturing, and in particular to a variable speed welding device based on advanced manufacturing and capable of operating in a small space. Background Art

[0002] Modern welding technology began with the appearance of carbon arc welding in 1882. Until the 1930s, only simple welding methods such as gas welding and manual arc welding were used in production. Since welding has the advantages of saving metal, high productivity, good product quality and greatly improved working conditions, it has developed extremely rapidly in the past half century. Nowadays, welding technology has developed from a traditional hot processing technique to an engineering process discipline that integrates materials, metallurgical structures, mechanics, electronics and other scientific disciplines, and occupies a great strategic position and achievements in the manufacturing industry;

[0003] Nowadays, welding technology is widely used in all walks of life, and with the development of related technologies, laser welding, friction welding and other welding methods have emerged. However, in some working scenarios such as high-altitude welding, small welding operation space, long welds and the welding process cannot be interrupted, or circular welds, the welding tools used in the above welding technologies are large in size and cannot be carried around or are extremely inconvenient to operate in a small space, which makes welding operations difficult. Therefore, this example aims to design a variable speed welding device that is easy to carry and can perform welding operations in a small space. Summary of the invention

[0004] In order to solve the above problems, this example designs a variable speed welding device based on advanced manufacturing and capable of being operated in a small space. The welding device comprises a main body, a control screen for speed regulation and displaying the feeding speed is fixedly arranged on the front end face of the main body, a cover cap is sleeved on the main body, an intermediate bin is arranged in the main body, and an outlet is arranged in a communication manner in the lower inner wall of the intermediate bin;

[0005] The inner wall of the intermediate compartment is provided with thread grooves in an annular array and in communication with each other, a screw is rotatably provided in the thread groove, and the lower end of the screw is dynamically connected to a rotating knob assembly provided on the main body;

[0006] The upper end of the main body is provided with an annular sleeve groove opening outward, the upper inner wall of the intermediate chamber is provided with an opening opening upward, the cover cap is provided with an energy storage groove opening downward, the energy storage groove is sleeved on the sleeve groove, the opening and the cover cap are provided with an energy storage component, the kinetic energy generated by the rotating knob component is stored in the energy storage component through the thread groove, and the energy storage component can provide reverse rotation torque for the thread groove when the welding device is working;

[0007] A pushing block is slidably provided in the intermediate bin, a threaded block which can slide in the threaded groove and is threadably connected to the screw rod is fixedly provided on the circumferential arc-shaped end surface of the pushing block, a clamping groove is provided running through the pushing block from top to bottom, a clamping swing groove opening outward is provided on the circumferential arc-shaped inner wall of the clamping groove, a clamping block with one end extending into the clamping groove is rotatably provided in the clamping swing groove, a torsion spring is provided between the clamping block and the inner wall of the clamping swing groove, a welding core extending through the clamping groove is clamped between the clamping blocks, the lower end of the welding core extends through the intermediate bin and extends out of the lower end opening of the outlet, and the upper end of the welding core extends through the inlet in the cover cap and extends out of the upper end surface of the cover cap;

[0008] A feed trough is provided in the arc-shaped inner wall near the lower end of the intermediate bin, and a feed speed control component for controlling the discharge speed of the welding core is provided in the feed trough. The feed speed control component is set through the control screen and displayed on the control screen.

[0009] Preferably, the welding core comprises a metal core and a coating, and the coating is wrapped on the outer surface of the metal core.

[0010] Preferably, the rotating knob assembly includes an annular groove opening outwardly arranged on the main body, a knob rotatably arranged in the annular groove, a transfer warehouse arranged between the intermediate warehouse and the annular groove is arranged in an annular array inside the arc-shaped inner wall around the intermediate warehouse, the transfer warehouse connects the annular groove and the intermediate warehouse, a first gear rotatably arranged in the transfer warehouse and meshing with the inner arc-shaped wall of the knob, the upper end of the first gear is coaxially connected to the second gear rotatable in the transfer warehouse, the lower end of the screw extends into the transfer warehouse and is fixedly provided with a lower gear rotatable in the transfer warehouse and meshing with the second gear.

[0011] Preferably, the energy storage assembly comprises a ring gear rotatably arranged in the opening, and the upper end of the screw extends into the opening and is fixedly provided with an upper gear rotatable in the opening and meshingly connected with the ring gear;

[0012] A countersunk groove is provided in the upper inner wall of the energy storage groove, and an outer ring gear is rotatably provided in the countersunk groove. The lower end of the outer ring gear extends into the energy storage groove, and the outer arc surface of the part of the outer ring gear extending into the energy storage groove is provided with teeth that can mesh with the ring gear. A fixed cylinder is fixed on the upper inner wall of the countersunk groove, the inlet is penetrated in the fixed cylinder, and an energy storage spring for storing kinetic energy is fixed between the fixed cylinder and the outer ring gear.

[0013] Preferably, the feed speed control device comprises a feed block rotatably arranged in the feed groove;

[0014] An annular gear ring groove is provided in the circumferential arc-shaped inner wall of the feed rotating groove, a gear ring that can rotate in the gear ring groove is fixedly provided on the circumferential arc-shaped end face of the feed rotating block, a driving groove is provided in the right inner wall of the gear ring rotating groove, a driving motor is fixedly provided in the lower inner wall of the driving groove, and the upper end of the driving motor is connected to a driving gear that can rotate in the driving groove and mesh with the gear ring;

[0015] A feed push groove is provided in the feed rotating block and runs through the feed rotating block from top to bottom, and the axis is in the same straight line as the exit axis. A spiral spiral fixing block is fixedly provided on the inner wall of the feed push groove, and the welding core passes through the feed push groove.

[0016] Preferably, in order to better control the discharge speed of the welding core when the feed rotary block rotates, a spirally slotted spiral push groove is provided on the metal core and the coating of the welding core, the pitch of the spiral push groove is equal to the pitch of the spiral fixing block, and the spiral fixing block can slide in the spiral push groove.

[0017] Preferably, the thrust force released by the energy storage spring to drive the screw to rotate and push the welding core downward through the pushing block is smaller than the friction between the spiral fixing block and the spiral pushing groove. Therefore, when the feed rotating block does not rotate, even if the energy storage spring has a tendency to push the pushing block downward, the welding core is always in a stopped state.

[0018] Preferably, a power cord is fixedly provided on the main body, and the power cord is connected to an external power source to provide the welding device with the current required for welding and conduct the current to the welding core.

[0019] Preferably, in order to facilitate the energy storage assembly to better store kinetic energy, a buckle is provided between the inner wall of the energy storage groove and the sleeve groove, and the buckle can limit the cap from rotating relative to the main body.

[0020] Beneficial effects: During use, due to the special appearance design of the device, the user only needs to hold the welding device in a way similar to holding a pen, and the operation difficulty is low. Even inexperienced operators can simply use the device to complete the welding work. During use, the user only needs to insert the welding core to complete the addition of the welding core, and the operation is simple. During the welding process, the device can automatically push the welding core out according to the feed speed, which is convenient and effective. In addition, when welding work is performed at high altitude or in a small space, the lightweight design of the device can greatly reduce the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] For ease of explanation, the present invention is described in detail with reference to the following specific embodiments and accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of a variable speed welding device based on advanced manufacturing and capable of operating in a small space according to the present invention;

[0023] Figure 2 is a schematic diagram of the overall structure of the welding device;

[0024] Figure 3 is a schematic diagram of the overall structure of the welding device;

[0025] Figure 4 is a schematic diagram of the overall structure of the welding device;

[0026] Figure 5 for Figure 1 Schematic diagram of some structures in ;

[0027] Figure 6 for Figure 1 Schematic diagram of some structures in ;

[0028] Figure 7 for Figure 1 Schematic diagram of some structures in ;

[0029] Figure 8 for Figure 1 Schematic diagram of some structures in ;

[0030] Fig. 9 for Figure 1 Schematic diagram of some structures in ;

[0031] Fig.10 for Figure 1 Schematic diagram of some structures in ;

[0032] Fig.11 It is a schematic diagram of the overall structure of the welding core. DETAILED DESCRIPTION

[0033] Combine the following Figures 1 to 11 The present invention is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are Figure 1 The up-down, left-right, front-back directions of the projection relationship itself are consistent.

[0034] The present invention relates to a variable speed welding device based on advanced manufacturing and capable of operating in a small space. The present invention will be further described below in conjunction with the accompanying drawings of the present invention:

[0035] The invention discloses a variable speed welding device based on advanced manufacturing and capable of operating in a small space, as shown in the attached Figure 1 -Attached Fig.11 The welding device shown comprises a main body 101, a control panel 103 for speed regulation and display of feeding speed is fixedly arranged on the front end surface of the main body 101, a cover cap 102 is sleeved on the main body 101, an intermediate bin 111 is arranged in the main body 101, and an outlet 112 is arranged in a communication manner in the lower inner wall of the intermediate bin 111;

[0036] The inner wall of the intermediate compartment 111 is provided with a circular array of thread grooves 107 that are interconnected, and a screw rod 108 is rotatably provided in the thread groove 107, and the lower end of the screw rod 108 is dynamically connected to a rotating knob assembly provided on the main body 101;

[0037] The upper end of the main body 101 is provided with an annular sleeve groove 113 which opens outwards, the upper inner wall of the intermediate chamber 111 is provided with an opening 128 which opens upwards, the cover cap 102 is provided with an energy storage groove 114 which opens downwards, the energy storage groove 114 is sleeved on the sleeve groove 113, the opening 128 and the cover cap 102 are provided with an energy storage component, the kinetic energy generated by the rotating knob component is stored in the energy storage component through the thread groove 107, and the energy storage component can provide reverse rotation torque for the thread groove 107 when the welding device is working;

[0038] A push block 141 is slidably provided in the intermediate bin 111, and a thread block 109 is fixedly provided on the arc-shaped end surface of the push block 141, which can slide in the thread groove 107 and is threadedly connected to the screw rod 108. A clamping groove 143 is provided through the push block 141 from top to bottom, and a clamping swing groove 144 opening outward is provided on the arc-shaped inner wall of the clamping groove 143, and a rotatable clamping groove 144 is provided with one end extending into the clamping groove. The clamping block 142 in the 143, a torsion spring 145 is arranged between the clamping block 142 and the inner wall of the clamping swing slot 144, the welding core 105 extending through the clamping slot 143 is clamped between the clamping blocks 142, the lower end of the welding core 105 extends through the intermediate bin 111 and extends out of the lower end opening of the outlet 112, and the upper end of the welding core 105 extends through the inlet 118 in the cover cap 102 and extends out of the upper end surface of the cover cap 102;

[0039] A feed groove 131 is provided in the arc-shaped inner wall near the lower end of the intermediate bin 111 , and a feed speed control component for controlling the discharge speed of the welding core 105 is provided in the feed groove 131 . The feed speed control component is set through the control screen 103 and displayed on the control screen 103 .

[0040] Advantageously, the welding core 105 includes a metal core and a coating, and the coating is wrapped on the outer surface of the metal core.

[0041] Among them, the attached Figure 1 To Attachment Figure 4 And attached Figure 6 It can be seen that the rotating knob assembly includes an annular groove 124 which is opened outward and is arranged on the main body 101, and the knob 104 is rotatably arranged in the annular groove 124, and a transfer bin 121 is arranged between the intermediate bin 111 and the annular groove 124 in the inner annular array of the arc-shaped inner wall around the intermediate bin 111, and the transfer bin 121 connects the annular groove 124 and the intermediate bin 111, and a first gear 122 which is rotatably arranged in the transfer bin 121 and meshed with the inner arc-shaped wall of the knob 104 is meshed with the first gear 122. The upper end of a gear 122 is coaxially connected to a second gear 125 that can rotate in the transfer bin 121. The lower end of the screw rod 108 extends into the transfer bin 121 and is fixedly provided with a lower gear 123 that can rotate in the transfer bin 121 and meshes with the second gear 125. By rotating the knob 104, the screw rod 108 can be ultimately driven to rotate, and the push block 141 can be driven to move upward in the intermediate bin 111. During the rotation of the screw rod 108, the energy storage assembly stores the kinetic energy of the screw rod 108.

[0042] Among them, the attached Figure 1 To Attachment Figure 5 As can be seen from FIG. 7 , the energy storage assembly includes a ring gear 126 rotatably disposed in the opening 128 , and the upper end of the screw rod 108 extends into the opening 128 and is fixedly provided with an upper gear 127 rotatable in the opening 128 and meshingly connected with the ring gear 126 ;

[0043] A countersunk groove 155 is provided on the inner wall of the upper side of the energy storage groove 114, and an outer ring gear 115 is rotatably provided in the countersunk groove 155. The lower end of the outer ring gear 115 extends into the energy storage groove 114, and the outer arc surface of the part of the outer ring gear 115 extending into the energy storage groove 114 is provided with teeth that can engage with the ring gear 126. A fixed cylinder 117 is fixedly provided on the inner wall of the upper side of the countersunk groove 155, and the inlet 118 is penetrated through the fixed cylinder 117. An energy storage spring 119 for storing kinetic energy is fixedly provided between the fixed cylinder 117 and the outer ring gear 115. The kinetic energy stored in the energy storage spring 119 can be slowly released under the control of the feed speed control device and drive the screw 108 to rotate in the opposite direction, thereby driving the push block 141 to move downward, thereby driving the welding core 105 to discharge.

[0044] Among them, the attached Figure 1 To Attachment Figure 4 , Attachment Figure 8 And attached Fig.10 It can be seen that the feed speed control device includes a feed rotating block 134 rotatably disposed in the feed rotating groove 131;

[0045] The arc-shaped inner wall of the feed rotating groove 131 is connected to a ring-shaped gear ring rotating groove 132, and a gear ring 133 that can rotate in the gear ring rotating groove 132 is fixedly provided on the arc-shaped end face of the feed rotating block 134. A driving groove 135 is connected to the right inner wall of the gear ring rotating groove 132, and a driving motor 137 is fixedly provided in the lower inner wall of the driving groove 135. The upper end of the driving motor 137 is connected to a driving gear 136 that can rotate in the driving groove 135 and mesh with the gear ring 133.

[0046] The feed push groove 138 is provided through the feed rotary block 134 from top to bottom, and the axis is in the same straight line as the axis of the outlet 112. A spiral spiral fixing block 151 is fixedly provided on the inner wall of the feed push groove 138. The welding core 105 passes through the feed push groove 138. The driving motor 137 drives and controls the rotation speed of the feed rotary block 134 and drives the spiral fixing block 151 to rotate, so that the welding core 105 abutting against the spiral fixing block 151 is gradually released under the rotation of the feed rotary block 134, and driven by the energy storage component, the welding core 105 is driven to gradually extend out of the lower end opening of the outlet 112.

[0047] Beneficial, by Fig.11 It can be seen that in order to better control the discharge speed of the welding core 105 when the feed rotary block 134 rotates, a spirally slotted spiral push groove 153 is provided on the metal core and the coating of the welding core 105, and the pitch of the spiral push groove 153 is equal to the pitch of the spiral fixing block 151, and the spiral fixing block 151 can slide in the spiral push groove 153.

[0048] Beneficially, the energy storage spring 119 releases power to drive the screw 108 to rotate and pushes the welding core 105 downward through the pushing block 141, and the thrust is smaller than the friction between the spiral fixing block 151 and the spiral pushing groove 153. Therefore, when the feed rotating block 134 does not rotate, even if the energy storage spring 119 tends to push the pushing block 141 downward, the welding core 105 is always in a stopped state.

[0049] Beneficial, by Figure 1 To Attachment Figure 4It can be seen that a power cord 106 is fixedly provided on the main body 101 . The power cord 106 is connected to an external power source to provide the welding device with the current required for welding and transmit the current to the welding core 105 .

[0050] Advantageously, in order to facilitate the energy storage assembly to better store kinetic energy, a buckle is provided between the inner wall of the energy storage groove 114 and the sleeve groove 113 , and the buckle can limit the cap 102 from rotating relative to the main body 101 .

[0051] In the initial state, the pushing block 141 slides down to the maximum extent in the intermediate compartment 111, and the cover cap 102 and the main body 101 move away from each other. At this time, the second gear 125 and the outer ring gear 115 move away from each other, and the energy storage spring 119 is in a relaxed state. At the same time, driven by the torsion spring 145, the clamping block 142 is in a maximum flipped-up state, and the power cord 106 is in a power-off state.

[0052] When welding is performed by the welding device,

[0053] 1) Preparation stage: The user puts the cap 102 on the main body 101 and fixes it relatively by buckling. At this time, the teeth on the outer ring gear 115 are vertically inserted between the teeth on the second gear 125 and mesh with the second gear 125. At this time, the user inserts the welding core 105 from top to bottom into the inlet 118 and passes it from top to bottom through the energy storage groove 114, the opening 128, the intermediate bin 111 (and the clamping groove 143 provided in the pushing block 141), the feeding pushing groove 138 and the outlet 112;

[0054] During this process, when the welding core 105 passes through the clamping groove 143, the reaction force pushes the clamping block 142 to flip downward, and when the downward thrust on the welding core 105 is removed, the reaction force exerted by the torsion spring 145 on the clamping block 142 clamps the welding core 105. When the welding core 105 passes through the feed push groove 138, the user rotates the welding core 105 so that the spiral fixing block 151 is screwed into the spiral push groove 153, and the lower end of the welding core 105 extends out of the lower end opening of the outlet 112 (the extension length can be determined by the actual usage and habits of the user).

[0055] 2) After the preparation stage is completed: the user connects the power cord 106 to the power supply and turns the knob 104. At this time, the rotating knob 104 drives the first gear 122 to rotate, and drives the lower gear 123 to rotate through the second gear 125, thereby driving the screw rod 108 to rotate. At this time, the screw rod 108 drives the thread block 109 to slide upward in the thread groove 107, thereby driving the push block 141 to slide upward (at this time, since the clamping block 142 is in a downward swingable state, the upward moving push block 141 will not drive the welding core 105 to move). When the push block 141 moves up to the maximum in the intermediate compartment 111, stop turning the knob 104;

[0056] During this process, the rotating screw 108 drives the upper gear 127 to rotate, and then drives the second gear 125 to rotate, and then drives the outer ring gear 115 to rotate and stores the torque kinetic energy in the deformation of the energy storage spring 119. At this time, the feed turn block 134 limits the movement of the welding core 105, so when the feed turn block 134 is in a stationary state, the energy storage spring 119 will never release kinetic energy.

[0057] 3) Usage process: The user sets the rotation speed of the drive motor 137 through the control panel 103, and controls the start and stop of the drive motor 137 and the on and off of the power cord 106 through the switch button. When the switch is turned on, the drive motor 137 starts, and drives the gear ring 133 to rotate through the drive gear 136, thereby driving the feed turn block 134 to rotate, and then driving the spiral fixing block 151 to rotate. At this time, since the welding core 105 is in the clamping state of the clamping block 142 and cannot rotate, when the feed turn block 134 rotates and the clamping block 142 is pushed downward, the welding core 105 is gradually pushed out of the lower end opening of the outlet 112 at a preset speed;

[0058] At this time, the user contacts the lower end of the welding core 105 to the welding seam, and under the condition of high voltage current and ignition of the coating, the metal core at the lower end of the welding core 105 melts and repairs the gap.

[0059] The beneficial effects of the present invention are as follows: during use, due to the special shape design of the device, the user only needs to hold the welding device in a manner similar to holding a pen, and the operation difficulty is low. Even an inexperienced operator can simply use the device to complete the welding work. During use, the user only needs to insert the welding core to complete the addition of the welding core, and the operation is simple. During the welding process, the device can automatically push the welding core out according to the feed speed, which is convenient and effective. In addition, when welding work is performed at high altitude or in a small space, the lightweight design of the device can greatly reduce the difficulty of operation.

[0060] Through the above methods, those skilled in the art can make various changes according to the working mode within the scope of the present invention.

Claims

1. A variable speed welding device based on advanced manufacturing and capable of being operated in a small space, the welding device comprising a main body, a control panel for speed regulation and displaying a feeding speed is fixedly arranged on the front end face of the main body, a cover cap is sleeved on the main body, an intermediate bin is arranged in the main body, and an outlet is arranged in a communication manner in the lower inner wall of the intermediate bin, Features: The inner wall of the intermediate compartment is provided with thread grooves in an annular array and in communication with each other, a screw is rotatably provided in the thread groove, and the lower end of the screw is dynamically connected to a rotating knob assembly provided on the main body; The upper end of the main body is provided with an annular sleeve groove opening outward, the upper inner wall of the intermediate chamber is provided with an opening opening upward, the cover cap is provided with an energy storage groove opening downward, the energy storage groove is sleeved on the sleeve groove, the opening and the cover cap are provided with an energy storage component, the kinetic energy generated by the rotating knob component is stored in the energy storage component through the thread groove, and the energy storage component can provide reverse rotation torque for the thread groove when the welding device is working; A pushing block is slidably provided in the intermediate bin, a threaded block which can slide in the threaded groove and is threadably connected to the screw rod is fixedly provided on the circumferential arc-shaped end surface of the pushing block, a clamping groove is provided running through the pushing block from top to bottom, a clamping swing groove opening outward is provided on the circumferential arc-shaped inner wall of the clamping groove, a clamping block with one end extending into the clamping groove is rotatably provided in the clamping swing groove, a torsion spring is provided between the clamping block and the inner wall of the clamping swing groove, a welding core extending through the clamping groove is clamped between the clamping blocks, the lower end of the welding core extends through the intermediate bin and extends out of the lower end opening of the outlet, and the upper end of the welding core extends through the inlet in the cover cap and extends out of the upper end surface of the cover cap; A feed trough is provided in the arc-shaped inner wall of the circumferential side near the lower end of the intermediate bin, and a feed speed control component for controlling the discharge speed of the welding core is provided in the feed trough, and the feed speed control component is set through the control screen and displayed on the control screen; The rotating knob assembly includes an annular ring groove which opens outward and is arranged on the main body, a knob is rotatably arranged in the ring groove, a transfer bin arranged between the intermediate bin and the ring groove is arranged in the inner annular array of the arc-shaped inner wall around the intermediate bin, the transfer bin connects the ring groove and the intermediate bin, a first gear which is rotatably arranged in the transfer bin and meshes with the arc-shaped inner wall of the knob, a second gear which can rotate in the transfer bin is coaxially connected to the upper end of the first gear, and the lower end of the screw rod extends into the transfer bin and is fixedly provided with a lower gear which can rotate in the transfer bin and meshes with the second gear; The energy storage assembly comprises a ring gear rotatably arranged in the opening, and the upper end of the screw extends into the opening and is fixedly provided with an upper gear rotatable in the opening and meshingly connected with the ring gear; A countersunk groove is provided in the upper inner wall of the energy storage groove, and an outer ring gear is rotatably provided in the countersunk groove. The lower end of the outer ring gear extends into the energy storage groove, and the outer arc surface of the part of the outer ring gear extending into the energy storage groove is provided with teeth that can mesh with the ring gear. A fixed cylinder is fixed on the upper inner wall of the countersunk groove, the inlet is penetrated in the fixed cylinder, and an energy storage spring for storing kinetic energy is fixed between the fixed cylinder and the outer ring gear.

2. A variable speed welding device based on advanced manufacturing and capable of operating in a small space as claimed in claim 1, Features: The welding core comprises a metal core and a coating, wherein the coating is wrapped around the outer surface of the metal core.

3. A variable speed welding device based on advanced manufacturing and capable of operating in a small space as claimed in claim 1, Features: The feed speed control assembly includes a feed block rotatably disposed in the feed groove; An annular gear ring groove is provided in the circumferential arc-shaped inner wall of the feed rotating groove, a gear ring that can rotate in the gear ring groove is fixedly provided on the circumferential arc-shaped end face of the feed rotating block, a driving groove is provided in the right inner wall of the gear ring rotating groove, a driving motor is fixedly provided in the lower inner wall of the driving groove, and the upper end of the driving motor is connected to a driving gear that can rotate in the driving groove and mesh with the gear ring; A feed push groove is provided in the feed rotating block and runs through the feed rotating block from top to bottom, and the axis is in the same straight line as the exit axis. A spiral spiral fixing block is fixedly provided on the inner wall of the feed push groove, and the welding core passes through the feed push groove.

4. A variable speed welding device based on advanced manufacturing and capable of operating in a small space as claimed in claim 3, Features: A spiral groove is provided on the metal core and the coating of the welding core. The pitch of the spiral groove is equal to the pitch of the spiral fixing block, and the spiral fixing block can slide in the spiral groove.

5. A variable speed welding device based on advanced manufacturing and capable of operating in a small space as claimed in claim 4, Features: The thrust force released by the energy storage spring to drive the screw to rotate and push the welding core downward through the pushing block is smaller than the friction force between the spiral fixing block and the spiral pushing groove.

6. A variable speed welding device based on advanced manufacturing and capable of operating in a small space as claimed in claim 1, Features: A power line is fixedly arranged on the main body, and the power line is connected to an external power source to provide the welding device with the current required for welding and conduct the current to the welding core.

7. A variable speed welding device based on advanced manufacturing and capable of operating in a small space as claimed in claim 1, Features: A buckle is provided between the inner wall of the energy storage groove and the sleeve groove, and the buckle can limit the cover cap from rotating relative to the main body.

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