CN113579466B - Die for welding grounding grid and welding method - Google Patents

Abstract

The invention discloses a die for welding a grounding grid and a welding method, and the die comprises a bottom plate, wherein a support is welded at the top of the bottom plate, a support plate is connected at the top of the support, a heat release welding flux storage hopper is installed on the upper end surface of the support plate, a connecting plate is connected on the side wall of the support in a limiting and sliding mode along the vertical direction, an upper die is fixedly connected to one side of the connecting plate, a reaction cavity and a first drainage channel are arranged in the upper die from top to bottom, the reaction cavity is communicated with the heat release welding flux storage hopper, the bottom of the upper die is rotatably connected with a rotating disk which is arranged in an inclined state, a linear die, a T-shaped die and a cross-shaped die are distributed on the lower end surface of the rotating disk, and the linear die, the T-shaped die and the cross-shaped die respectively comprise a die shell which is adaptive to a connecting structure of the grounding grid. The invention realizes that one device welds grounding grids with different specifications, improves the convenience of transportation, improves the welding efficiency, reduces the labor intensity of workers and reduces the welding cost.

Description

Die for welding grounding grid and welding method

Technical Field

The invention belongs to the technical field of welding of grounding grids, and particularly relates to a die and a welding method for welding a grounding grid.

Background

At present, the best connection mode of the grounding grid is a modern welding process for completing fusion joints in a mold cavity with a certain shape and size, welding can be implemented only by welding flux, an ignition device and a mold, and a large amount of auxiliary welding equipment is not needed. The patent document discloses an application number 201711009458.3 and discloses a general mold for ground net aluminothermic welding, which records that a plurality of special molds need to be arranged according to different specifications and different sizes of connectors during field construction, in order to avoid the trouble, fixed placing cavities communicated with a fusion welding cavity are respectively arranged on two sides of the outer surface level of a mold body, detachable modules are arranged in the fixed placing cavities, the diameter of each module is the same as the inner diameter of the fixed placing cavity, inner holes allowing conductors needing to be welded to penetrate through are formed in the end faces of the modules, when the field construction is carried out, the conductors needing to be welded in the same specification and different sizes only need one mold and the modules with different inner hole diameters, the conductors needing to be welded in the same specification and different sizes are welded by one mold, and the transportation convenience is improved. But the grounding net has different specifications, still needs the workman to take multiple mould when the grounding net connector that faces different specifications, and welding cost is higher.

Disclosure of Invention

The invention aims to provide a die for welding a grounding grid and a welding method, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a ground net welding is with mould and welding method, comprising a base plate, the top welding of bottom plate has the support, the top of support is connected with the backup pad, exothermic solder flux storage fill is installed to the up end of backup pad, the spacing sliding connection in vertical direction has the connecting plate on the lateral wall of support, one side fixedly connected with of connecting plate goes up the mould, the inside of going up the mould is by last from bottom setting reaction chamber and first drainage channel, reaction chamber and exothermic solder flux storage fill are linked together, the bottom of going up the mould rotates and is connected with the rotary disk that is the slope state setting, it has the I-shaped mould to distribute on the lower terminal surface of rotary disk, T-shaped mould and cross mould, the I-shaped mould, T-shaped mould and cross mould all include the mould shell that suits with ground net connection structure, form second drainage channel and shaping chamber by from top to bottom in proper order in the mould shell, the mould shell lower extreme still is provided with the constant head tank and is adapted with the locating piece on the bottom plate, through adjusting I-shaped mould, whether T-shaped mould and cross mould are in vertical state and control its inside second drainage channel and first drainage channel intercommunication.

Preferably, the outer ring of the upper die is fixedly provided with a sliding block, the rotating disk is provided with a sliding groove matched with the sliding block, and the rotating disk is rotatably connected with the upper die through the matching of the sliding block and the sliding groove.

Preferably, the support is rotatably connected with a rotating shaft, the rotating shaft is fixedly sleeved with a gear, a rack meshed with the gear is fixedly mounted on the connecting plate, the height position of the connecting plate and the height position of the upper die relative to the bottom plate are adjusted through the matching of the gear and the rack, and one end of the rotating shaft is coaxially and fixedly connected with an up-and-down adjusting handle.

Preferably, a gap is formed between the top of the upper die and the lower end face of the supporting plate, a die cover is arranged on the top of the upper die and located in the gap in a limiting sliding mode along the horizontal direction, a buckle is connected to the circumferential face of the outer side of the die cover, and a clamping groove matched with the buckle is formed in the side wall of the upper die.

Preferably, exothermic welding flux storage hopper is including the powder storage hopper that ignites and weld the powder storage hopper that fixed setting in the backup pad, weld the powder storage hopper and be close to the backup pad one side that is connected with the support, be provided with first unloading passageway on the bottom plate of the powder storage hopper that ignites and pass the backup pad and lead to the reaction chamber, be provided with second unloading passageway on the bottom plate of welding the powder storage hopper and pass the backup pad and lead to the reaction chamber, be provided with the powder unloading controlling means that ignites corresponding to first unloading passageway in the backup pad, be provided with the powder unloading controlling means that welds corresponding to second unloading passageway in the backup pad, the diameter of second unloading passageway is greater than first unloading passageway.

Preferably, powder unloading controlling means ignites including the fourth dog, first cavity has been seted up along the horizontal direction in the backup pad, be provided with first spout on the lateral wall of first cavity, the fourth dog is located first spout and spacing sliding fit with it, the one side fixedly connected with first spring that deviates from first unloading passageway of fourth dog, the terminal fixed connection of first spring is on the lateral wall of first cavity, the one end fixed connection that the fourth dog deviates from first spring ignites powder unloading baffle, the fourth dog stretches out the backup pad downwards and cooperatees with the fixed third dog that sets up on the mould lid, first spring is under the natural state, it plugs up first unloading passageway to ignite the powder unloading baffle and receive the elastic action of first spring.

Preferably, welding powder unloading controlling means is including the second dog, the inside of backup pad is formed with the second cavity, be provided with the second spout on the lateral wall of second cavity, the second dog is located the second spout and with it spacing sliding fit, one side fixedly connected with second spring that second unloading passageway was kept away from to the second dog, the terminal fixed connection of second spring is on the lateral wall of second cavity, the one end fixedly connected with welding powder unloading baffle of second spring is kept away from to the second dog, the second dog stretches out the backup pad downwards and cooperatees with the fixed first dog that sets up on the mould lid, the second spring is under the natural state, welding powder unloading baffle receives the elastic action of second spring and plugs up second unloading passageway.

Preferably, an ignition port is formed in the side wall of the upper die and located below the clamping groove, an ignition port baffle is hinged to the side wall of the upper die and located at the ignition port, copper sheet reel mechanisms are arranged on the side walls of the front side and the rear side of the upper die, one copper sheet reel mechanism performs unreeling, and the other copper sheet reel mechanism performs reeling.

Preferably, copper sheet axle is rolled up the mechanism and is included driven shaft and the regulating box of fixed setting on the connecting plate, the driven shaft is rolled up and is equipped with the copper sheet, it is provided with the through-hole that can pass the copper sheet on the mould to go up, the copper sheet passes the bottom of reaction chamber, the fixed cover of having connect driven bevel gear after the one end of driven shaft passes the regulating box and extends to its inside, the driven shaft rotates with the inner wall of regulating box to be connected, the inside of regulating box is provided with the initiative bevel gear with driven bevel gear engaged with, the middle part of initiative bevel gear is connected with the driving shaft, the driving shaft upwards extends to be connected with the rotation handle behind the outside of regulating box along vertical direction, the driving shaft rotates with the inner wall of regulating box to be connected.

In addition, the invention also provides a grounding grid welding method, which adopts the above mentioned grounding grid welding mould and comprises the following steps:

step one, rotating a rotating disc according to the shape of a required grounding grid, rotating a corresponding mold on the rotating disc to the position right below an upper mold, and enabling a positioning groove to correspond to a positioning block;

secondly, placing a grounding net corresponding to the shape of the mold in the positioning block, and moving the upper mold downwards to enable the grounding net to be attached to the upper surface of the bottom plate;

pouring the heat-release welding flux in the heat-release welding flux storage hopper into the reaction cavity;

and fourthly, igniting the heat release welding flux, enabling the heat release welding flux to enter the corresponding die through the first drainage channel to perform heat release reaction, moving the upper die upwards after the heat release welding flux performs hot melting reaction for 10-20 seconds, and then separating the die for welding the grounding grid from the welded grounding grid. .

Compared with the prior art, the invention provides a grounding grid welding die which has the following beneficial effects:

(1) According to the invention, the dies with different specifications are arranged on the rotating disc, the second drainage channel and the forming cavity are sequentially formed in each die from top to bottom, the rotating disc is rotatably arranged on the upper die, and the second drainage channel in each die is controlled to be communicated with the first drainage channel by adjusting whether each die is in a vertical state, so that the grounding grids with different specifications are welded by one device, the convenience of transportation is improved, the welding efficiency is improved, the labor intensity of workers is reduced, and the welding cost is reduced.

(2) In the invention, the ignition powder discharging control device and the welding powder discharging control device are respectively arranged in the ignition powder storage hopper and the welding powder storage hopper, the discharging of the ignition powder and the welding powder is controlled by pulling the die cover, and the diameter of the second discharging channel is larger than that of the first discharging channel, so that the flow of the second discharging channel is large, a large amount of ignition powder is distributed on the upper surface of the welding powder, and the sufficient combustion of the welding powder can be ensured. After the die cover is pulled open and blanking is finished, the die cover automatically restores to the initial position under the action of the spring to seal the upper die.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

fig. 1 is a perspective view of a grounding grid welding mold.

Fig. 2 is a sectional view of a die for soldering a ground net.

Fig. 3 is a cross-sectional view of a mold shell.

Fig. 4 is a top view of the mold cover.

Fig. 5 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 4.

Fig. 6 is a sectional view taken along line B-B in fig. 4.

Fig. 7 is a schematic structural diagram of a copper sheet reel mechanism.

Fig. 8 is a schematic view of a connection structure of the bracket and the connection plate.

In the figure: 1. a storage hopper for ignition powder; 2. a welding powder storage hopper; 3. a support plate; 4. a supporting block; 5. a support; 6. a handle is adjusted up and down; 7. a connecting plate; 8. a base plate; 9. positioning blocks; 10. a linear mold; 11. a T-shaped mold; 12. a cross-shaped mold; 13. rotating the disc; 14. an upper die; 15. a copper sheet reel mechanism; 16. a mold cover; 1701. a control device for igniting powder; 1702. a welding powder discharging control device; 18. a rack; 19. a gear; 20. a first drainage channel; 21. a copper sheet; 22. a reaction chamber; 23. a card slot; 24. buckling; 25. a rotating shaft; 26. an ignition port baffle; 27. an ignition port; 28. a slider; 101. a second drainage channel; 102. a mold housing; 103. a workpiece fixing channel; 104. a molding cavity; 105. positioning a groove; 151. rotating the handle; 152. a drive shaft; 153. a drive bevel gear; 154. a driven bevel gear; 155. an adjusting box; 156. a driven shaft; 171. a first chute; 172. a first spring; 173. a first blanking channel; 174. igniting a powder blanking baffle; 175. a first stopper; 176. a second stopper; 177. a fourth stop block; 178. a third stopper; 1710. a second blanking channel; 1711. welding a powder blanking baffle; 1712. a second spring; 1713. a second runner.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the embodiments of the present invention.

Referring to fig. 1-8, the invention provides a mold for welding a ground grid, which comprises a bottom plate 8, a support 5 welded on the top of the bottom plate 8, a support block 4 welded on the top of the support 5, a support plate 3 bolted on the top of the support block 4, a heat-releasing flux storage hopper installed on the upper end surface of the support plate 3, a connecting plate 7 connected to the side wall of the support 5 in a limiting and sliding manner along the vertical direction, an upper mold 14 fixedly connected to one side of the connecting plate 7, a reaction chamber 22 and a first drainage channel 20 arranged inside the upper mold 14 from top to bottom, the reaction chamber 22 communicated with the heat-releasing flux storage hopper, a rotating disk 13 arranged in an inclined state and rotatably connected to the bottom of the upper mold 14, and a linear mold 10, a t-shaped mold 11 and a cross-shaped mold 12 distributed on the lower end surface of the rotating disk 13. As shown in fig. 3, the linear die 10, the t-shaped die 11 and the cross-shaped die 12 each include a die shell 102 adapted to the ground grid connection structure, a second drainage channel 101 and a forming cavity 104 are sequentially formed in the die shell 102 from top to bottom, a positioning groove 105 is further provided at the lower end of the die shell 102 to be adapted to a positioning block 9 on the bottom plate 8, the second drainage channel 101 inside the linear die 10, the t-shaped die 11 and the cross-shaped die 12 are controlled to be communicated with the first drainage channel 20 by adjusting whether the linear die 10, the t-shaped die 11 and the cross-shaped die 12 are in a vertical state, and in addition, a workpiece fixing channel 103 is further provided on the lower end surface of the die shell 102 to fix the ground grid workpiece.

As a preferred embodiment, in this embodiment, a slider 28 is fixedly disposed on an outer ring of the upper die 14, a sliding slot matched with the slider 28 is formed on the rotating disk 13, and the rotating disk 13 is rotatably connected with the upper die 14 through the matching of the slider 28 and the sliding slot.

As shown in fig. 2, in this embodiment, a rotating shaft 25 is rotatably connected to the bracket 5, a gear 19 is fixedly sleeved on the rotating shaft 25, a rack 18 engaged with the gear 19 is fixedly installed on the connecting plate 7, the height positions of the connecting plate 7 and the upper mold 14 relative to the bottom plate 8 are adjusted by the cooperation of the gear 19 and the rack 18, an up-down adjusting handle 6 is coaxially and fixedly connected to one end of the rotating shaft 25, the rotating shaft 25 is driven to rotate by rotating the up-down adjusting handle 6, the gear 19 and the rotating shaft 25 rotate synchronously, the rack 18 on the connecting plate 7 is engaged with the gear 19, and therefore the connecting plate 7 is driven to drive the upper mold 14 to move in the vertical direction.

Further, a gap is formed between the top of the upper mold 14 and the lower end surface of the support plate 3, a mold cover 16 is arranged on the top of the upper mold 14 and in the gap in a limited sliding manner along the horizontal direction, and the sliding connection manner here adopts a connection manner of a T-shaped block and a T-shaped groove in the prior art. The clamp 24 is connected to the circumferential surface of the outer side of the die cover 16, the side wall of the upper die 14 is provided with a clamping groove 23 matched with the clamp 24, the die cover 16 is pulled outwards, the reaction cavity 22 in the upper die 14 can be communicated with the heat-releasing welding flux storage hopper, after welding is finished, the die cover 16 is pushed inwards, and the clamp 24 is just clamped into the clamping groove 23.

Specifically, exothermic flux storage hopper in this embodiment is including fixed setting up in the powder storage hopper 1 that ignites and welding powder storage hopper 2 in backup pad 3, weld one side that powder storage hopper 2 is close to backup pad 3 and is connected with support 5, be provided with first unloading passageway 173 on the bottom plate of powder storage hopper 1 and pass backup pad 3 and lead to reaction chamber 22, be provided with second unloading passageway 1710 on the bottom plate of welding powder storage hopper 2 and pass backup pad 3 and lead to reaction chamber 22, be provided with corresponding to first unloading passageway 173 in backup pad 3 and ignite powder unloading controlling means 1701, be provided with corresponding to second unloading passageway 1710 in backup pad 3 and weld powder unloading controlling means 1702, the diameter of second unloading passageway 1710 is greater than first unloading passageway 173.

As shown in fig. 5, the ignition powder blanking control device 1701 in this embodiment includes a fourth stopper 177, a first cavity is formed in the support plate 3 along the horizontal direction, a first sliding groove 171 is formed in a side wall of the first cavity, the fourth stopper 177 is located in the first sliding groove 171 and is in limited sliding fit with the first sliding groove, a first spring 172 is fixedly connected to one side of the fourth stopper 177 away from the first blanking channel 173, a tail end of the first spring 172 is fixedly connected to the side wall of the first cavity, one end of the fourth stopper 177 away from the first spring 172 is fixedly connected to the ignition powder blanking baffle 174, the fourth stopper 177 extends downward out of the support plate 3 and is matched with a third stopper 178 fixedly arranged on the mold cover 16, and the ignition powder blanking baffle 174 is in a natural state and is blocked by the elastic action of the first spring 172 to the first blanking channel 173.

As shown in fig. 6, the welding powder discharging control device 1702 includes a second stopper 176, a second cavity is formed inside the support plate 3, a second chute 1713 is disposed on a sidewall of the second cavity, the second stopper 176 is located in the second chute 1713 and is in sliding fit with the second chute in a limiting manner, a second spring 1712 is fixedly connected to one side of the second stopper 176 away from the second discharging channel 1710, a terminal of the second spring 1712 is fixedly connected to a sidewall of the second cavity, one end of the second stopper 176 away from the second spring 1712 is fixedly connected to the welding powder discharging stopper 1711, the second stopper 176 extends downward out of the support plate 3 and is matched with the first stopper 175 fixedly disposed on the mold cover 16, and the second spring 1712 is in a natural state, and the welding powder discharging stopper 1711 blocks the second discharging channel 1710 under the elastic action of the second spring 1712.

In addition, an ignition port 27 is formed in the side wall of the upper die 14 and located below the clamping groove 23, an ignition port baffle 26 is hinged to the side wall of the upper die 14 and located at the ignition port 27, the ignition port baffle 26 is used for plugging the ignition port 27 when ignition is not needed, copper sheet reel mechanisms 15 are arranged on the side walls of the front side and the rear side of the upper die 14, one copper sheet reel mechanism 15 performs unreeling, and the other copper sheet reel mechanism 15 performs reeling.

Specifically, the copper sheet rolling mechanism 15 comprises a driven shaft 156 and an adjusting box 155 fixedly arranged on the connecting plate 7, the driven shaft 156 is rolled with a copper sheet 21, a through hole capable of passing through the copper sheet 21 is formed in the upper die 14, the copper sheet 21 passes through the bottom of the reaction cavity 22, and the copper sheet 21 prevents welding powder and ignition powder from entering the die before reaction. One end of the driven shaft 156 penetrates through the adjusting box 155 and extends to the inside of the adjusting box, the driven bevel gear 154 is fixedly sleeved on the driven shaft 156, the driven shaft 156 is rotatably connected with the inner wall of the adjusting box 155, a driving bevel gear 153 meshed with the driven bevel gear 154 is arranged inside the adjusting box 155, the middle of the driving bevel gear 153 is connected with a driving shaft 152, the driving shaft 152 extends upwards to the outside of the adjusting box 155 along the vertical direction and is connected with a rotating handle 151, the driving shaft 152 is rotatably connected with the inner wall of the adjusting box 155, and the copper sheets 21 on the driven shaft 156 can be driven to be wound by rotating the rotating handle 151.

The invention discloses a die for welding a grounding grid, which is used in concrete (taking the use of welding a linear grounding grid as an example): the disc 13 is rotated manually, the in-line die 10 is rotated to the position right below the upper die 14, the positioning groove 105 corresponds to the positioning block 9, and then the handle 151 is rotated manually, so that the copper sheet 21 is pulled into the upper die 14. Manually pull open mould lid 16, when mould lid 16 is pulled to the position of figure 6, first dog 175 drives second dog 176 to slide, second dog 176 drives welding powder unloading baffle 1711 to slide and open passageway second unloading passageway 1710, welding powder enters reaction chamber 22 through first unloading passageway 173 and is blocked by copper sheet 21 afterwards, when the welding powder that flows in is about to the budget, continue to pull open mould lid 16, when being pulled to the position of figure 5, third dog 178 drives fourth dog 177 to slide, fourth dog 177 drives ignition powder unloading baffle 174 to slide and open first unloading passageway 173, then ignition powder enters reaction chamber 22 through second unloading passageway 1710, because second unloading passageway 1710 is greater than first unloading passageway 173 diameter, so the flow of second unloading passageway 1710 is big, a large amount of ignition powder distributes on the welding powder upper surface, reach the appointed volume after, close mould lid 16, first spring 172 resets and drives fourth dog 177 to reset, first unloading passageway 173 closes, second spring 1712 drives second dog 176, second unloading passageway 1710 resets and closes.

The I-shaped grounding net is placed in the positioning block 9, the upper and lower adjusting handles 6 are manually rotated to enable the upper die 14 to move downwards, the I-shaped die 10 is attached to the upper surface of the bottom plate 8, manual ignition is carried out through the ignition port 27, the upper and lower adjusting handles 6 are manually rotated after standing for 10-20s, the upper die 14 moves upwards and stops moving when moving to a half, the whole device is moved away from the grounding net, the die cover 16 is opened to clean the reaction cavity 22, the first drainage channel 20, the second drainage channel 101 and the forming cavity 104, the die cover 16 is closed, and then the upper and lower adjusting handles 6 are continuously and manually rotated to restore the upper die 14 to the original position to wait for next use.

In the description of the present invention, the terms "first", "second", "another", and "yet" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (6)

1. The utility model provides a ground net mould for welding, is including bottom plate (8), and the top welding of bottom plate (8) has support (5), and the top of support (5) is connected with backup pad (3), and exothermic solder flux storage bucket, its characterized in that are installed to the up end of backup pad (3): the side wall of the support (5) is connected with a connecting plate (7) in a limiting and sliding mode along the vertical direction, one side of the connecting plate (7) is fixedly connected with an upper die (14), a reaction cavity (22) and a first drainage channel (20) are arranged in the upper die (14) from top to bottom, the reaction cavity (22) is communicated with a heat release welding flux storage hopper, the bottom of the upper die (14) is rotatably connected with a rotating disc (13) which is arranged in an inclined state, a linear die (10), a T-shaped die (11) and a cross-shaped die (12) are distributed on the lower end face of the rotating disc (13), the linear die (10), the T-shaped die (11) and the cross-shaped die (12) respectively comprise a die shell (102) which is matched with a grounding network connecting structure, a second drainage channel (101) and a forming cavity (104) are sequentially formed in the die shell (102) from top to bottom, a positioning groove (105) is further arranged at the lower end of the die shell (102) and is matched with a positioning block (9) on the bottom plate (8), and whether the second drainage channel (101) is controlled to be communicated with the first drainage channel (20) by adjusting the linear die (10), the T-shaped die (11) and the cross-shaped die (12);

a rotating shaft (25) is rotatably connected to the support (5), a gear (19) is fixedly sleeved on the rotating shaft (25), a rack (18) meshed with the gear (19) is fixedly installed on the connecting plate (7), the height positions of the connecting plate (7) and the upper die (14) relative to the bottom plate (8) are adjusted through the matching of the gear (19) and the rack (18), and an upper adjusting handle and a lower adjusting handle (6) are coaxially and fixedly connected to one end of the rotating shaft (25);

a gap is formed between the top of the upper die (14) and the lower end face of the support plate (3), a die cover (16) is arranged on the top of the upper die (14) and positioned in the gap in a limiting and sliding manner along the horizontal direction, a buckle (24) is connected to the circumferential surface of the outer side of the die cover (16), and a clamping groove (23) matched with the buckle (24) is formed in the side wall of the upper die (14);

the exothermic welding flux storage hopper comprises an ignition powder storage hopper (1) and a welding powder storage hopper (2) which are fixedly arranged on a support plate (3), the welding powder storage hopper (2) is close to one side, connected with a support (5), of the support plate (3), a first blanking channel (173) is arranged on a bottom plate of the ignition powder storage hopper (1) and penetrates through the support plate (3) to lead to a reaction cavity (22), a second blanking channel (1710) is arranged on the bottom plate of the welding powder storage hopper (2) and penetrates through the support plate (3) to lead to the reaction cavity (22), an ignition powder blanking control device (1701) is arranged in the support plate (3) corresponding to the first blanking channel (173), a welding powder blanking control device (1702) is arranged in the support plate (3) corresponding to the second blanking channel (1710), and the diameter of the second blanking channel (1710) is larger than that of the first blanking channel (173);

powder unloading controlling means (1701) ignites including fourth dog (177), first cavity has been seted up along the horizontal direction in backup pad (3) inside, be provided with first spout (171) on the lateral wall of first cavity, fourth dog (177) are located first spout (171) and spacing sliding fit with it, one side fixedly connected with first spring (172) that deviates from first unloading passageway (173) of fourth dog (177), the terminal fixed connection of first spring (172) is on the lateral wall of first cavity, fourth dog (177) deviate from one end fixed connection that first spring (172) ignite powder unloading baffle (174), fourth dog (177) stretch out backup pad (3) downwards and cooperate with third dog (178) of fixed setting on mould lid (16), first spring (172) are under the natural state, ignite powder unloading baffle (174) and receive the elastic action of first spring (172) and block up first unloading passageway (173).

2. The die for welding the grounding grid of claim 1, wherein: the outer ring of the upper die (14) is fixedly provided with a sliding block (28), the rotating disk (13) is provided with a sliding groove matched with the sliding block (28), and the rotating disk (13) is rotationally connected with the upper die (14) through the matching of the sliding block (28) and the sliding groove.

3. The die for welding the grounding grid according to claim 1, wherein: welding powder unloading controlling means (1702) is including second dog (176), the inside of backup pad (3) is formed with the second cavity, be provided with second spout (1713) on the lateral wall of second cavity, second dog (176) are located second spout (1713) and spacing sliding fit with it, one side fixedly connected with second spring (1712) that second unloading passageway (1710) was kept away from in second dog (176), the terminal fixed connection of second spring (1712) is on the lateral wall of second cavity, the one end fixedly connected with welding powder unloading baffle (1711) that second spring (1712) was kept away from in second dog (176), second dog (176) stretch out backup pad (3) downwards and cooperate with first dog (175) of fixed setting on mould lid (16), second spring (1712) are under the natural state, welding powder unloading baffle (1711) receive the elastic action of second spring (1712) to plug up second unloading passageway (1710).

4. The die for welding the grounding grid of claim 1, wherein: an ignition port (27) is formed in the side wall of the upper die (14) and located below the clamping groove (23), an ignition port baffle (26) is hinged to the side wall of the upper die (14) and located at the ignition port (27), copper sheet reel mechanisms (15) are arranged on the side walls of the front side and the rear side of the upper die (14), one copper sheet reel mechanism (15) performs unreeling action, and the other copper sheet reel mechanism (15) performs reeling action.

5. The mold for welding the grounding grid according to claim 4, wherein: copper sheet reel mechanism (15) is including driven shaft (156) and fixed setting in regulating box (155) on connecting plate (7), driven shaft (156) upward roll be equipped with copper sheet (21), be provided with the through-hole that can pass copper sheet (21) on last mould (14), copper sheet (21) pass the bottom of reaction chamber (22), the fixed cover of one end of driven shaft (156) is passed regulating box (155) and is connect driven bevel gear (154) after extending to its inside, driven shaft (156) are connected with the inner wall rotation of regulating box (155), the inside of regulating box (155) is provided with drive bevel gear (153) with driven bevel gear (154) engaged with, the middle part of drive bevel gear (153) is connected with driving shaft (152), driving shaft (152) upwards extend to the outside of regulating box (155) along vertical direction after be connected with rotation handle (151), driving shaft (152) are connected with the inner wall rotation of regulating box (155).

6. A grounding grid welding method, which adopts the die for grounding grid welding of any one of claims 1 to 5, and is characterized in that: the method comprises the following steps:

step one, rotating a rotating disc (13) according to the shape of a required grounding grid, rotating a corresponding die on the rotating disc (13) to be right below an upper die (14), and enabling a positioning groove (105) to correspond to a positioning block (9);

secondly, placing the grounding net corresponding to the shape of the corresponding die on the rotating disc (13) in the positioning block (9), and moving the upper die (14) downwards to enable the corresponding die on the rotating disc (13) to be attached to the upper surface of the bottom plate (8);

pouring the heat-release welding flux in the heat-release welding flux storage hopper into the reaction cavity (22);

igniting the heat release welding flux, enabling the heat release welding flux to enter a corresponding mold on the rotating disc (13) through the first drainage channel (20) to perform heat release reaction, enabling the upper mold (14) to move upwards after the heat release welding flux performs hot melting reaction for 10-20 seconds, and then enabling the mold for welding the grounding grid to be separated from the welded grounding grid.

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