Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the following technical scheme:
The utility model provides an electrode on-line measuring mount pad, including the panel beating box, panel beating box top is provided with testing platform, testing platform one side just is located panel beating box top and is provided with status indicator lamp, panel beating box one side is provided with the display page, panel beating box is inside and be located the display page rear side and be provided with low-voltage power supply, one side is provided with IO expansion module, panel beating box is inside and be located testing platform bottom and be provided with the installation piece, installation piece bottom fixed mounting has first supporting shoe, first supporting shoe one side is provided with data processing box, first supporting shoe is inside to be provided with taut cylinder, taut cylinder both sides are provided with displacement sensor, the displacement sensor bottom is provided with the measuring rod, taut chuck is installed at taut cylinder top, the placing mouth has been seted up at testing platform top, testing platform top is provided with the electrode holder, flexible locating piece of electrode holder bottom fixed mounting, the bottom of the flexible locating plate is fixedly provided with a locating nail, a clamping rod is fixedly arranged between the electrode holder and the bottom of the flexible locating plate, one end of the clamping rod is positioned in the tensioning chuck, the two ends of the top of the mounting block are fixedly provided with a first motor, the output end of the first motor is fixedly connected with a threaded rod, one end of the threaded rod is rotationally connected with a fixed plate, one end of the threaded rod is in threaded connection with a moving block, the bottom of the moving block is in sliding connection with the inner wall of the bottom of the mounting block, one end of the clamping rod is provided with a fixed ring, the two ends of the fixed ring are hinged with pushing plates, one end of the pushing plate is hinged with the moving block, the inner walls of the two sides of the fixed ring are fixedly connected with first electric push rods, one end of each first electric push rod is fixedly connected with the clamping block, the bottom of the fixed ring is fixedly connected with a connecting spring, the bottom of the connecting spring is fixedly connected with a connecting ring, the two ends of the connecting ring are fixedly provided with a second electric push rod, the slot is offered at taut chuck top, and second electric putter one end is pegged graft with the slot, and the go-between middle part is offered flutedly, and recess inner wall fixedly connected with third electric putter, third electric putter one end are provided with the backup pad.
As the preference of above-mentioned technical scheme, panel beating box inside rear side just is located and shows that page rear side is provided with outside motor interface, and outside motor interface is located low voltage power supply and IO expansion module top, and the electrode holder bottom is provided with the grip block, grip block bottom fixedly connected with dead lever, and the locating nail passes the grip block with the clamping lever and extends to placing the mouth inside, and the fixed orifices has been seted up at the testing platform top and between being located the mouth, and the dead lever is pegged graft with the fixed orifices.
As the preference of above-mentioned technical scheme, the detection platform is inside and be located and place mouthful both sides and seted up the removal groove, and the removal inslot just is located the locating nail both sides and all is provided with fixed knot and constructs, and installation piece, first supporting shoe and panel beating box inner wall fixed mounting, displacement sensor and taut cylinder are located inside the first supporting shoe, and the measuring rod is located inside the installation piece with taut chuck.
As the preference of above-mentioned technical scheme, first motor, threaded rod, movable block and pushing plate set up with taut chuck central symmetry, and the pushing plate is located between the measuring bar, and fixed plate bottom and installation piece bottom inner wall fixed mounting, first electric putter are located the clamping bar left and right sides with the clamping block, and the clamping block both ends that are located the clamping bar left side all fixedly connected with limit pole, and limit groove has all been seted up at the clamping block both ends that are located the clamping bar right side, limit groove and limit pole grafting.
As the preference of above-mentioned technical scheme, coupling spring is located solid fixed ring bottom both ends, and the go-between is located taut chuck top, and it is located solid fixed ring bottom, and second electric putter is located the coupling spring both sides, and the fixed orifices has been seted up at the middle part, and the fixed orifice is located the recess middle part, and the backup pad is located the inside both sides of recess, and the mounting groove has been seted up near third electric putter one side to the backup pad, and third electric putter one end and mounting groove fixed mounting, the shape of backup pad are semi-circular.
As the preference of above-mentioned technical scheme, fixed knot constructs including first fixed block, the second fixed block, the spout has been seted up to first fixed block and second fixed block near locating nail one side, the inside sliding connection of spout has the slider, slider one side fixedly connected with second supporting shoe, the movable mouth has been seted up to second supporting shoe one end, movable mouth has been seted up at the movable mouth between the movable mouth and be located second supporting shoe top, movable mouth inside is provided with the movable plate, movable plate bottom fixedly connected with telescopic link, movable plate bottom fixedly connected with connecting block, connecting block one end fixedly connected with first rack, first rack one side meshing has the gear, gear one side meshing has the second rack, second rack one side fixedly connected with connecting plate, connecting plate one side fixedly connected with electric telescopic block.
As the preference of above-mentioned technical scheme, first fixed block, second fixed block bottom and removal groove inner wall fixed mounting, place mouthful both sides and be located removal groove one side and seted up the through-hole, second supporting shoe bottom fixedly connected with extension spring, extension spring bottom and removal groove bottom inner wall fixed connection, second supporting shoe one end passes the through-hole and extends to and place mouthful inside, locating nail one side is located second supporting shoe top, electric telescopic piece and second rack one end are located removal mouthful top, electric telescopic piece's the other end is located locating nail bottom both sides.
As the preference of above-mentioned technical scheme, the movable plate is located second supporting shoe top and its both ends that are located the locating nail bottom, telescopic link surface cover is equipped with compression spring, telescopic link bottom and second supporting shoe bottom inner wall fixed mounting, first rack is located movable plate bottom both ends, first rack, the gear, the second rack, the connecting block, connecting plate and electric telescopic block set up with second supporting shoe central symmetry, electric telescopic block bottom fixedly connected with fixed spring, fixed spring bottom and second supporting shoe bottom inner wall fixed connection.
As the preference of above-mentioned technical scheme, the connecting block shape is L shape, and first rack and second rack are located and remove mouthful bottom, and gear middle part fixedly connected with dwang, dwang both ends all rotate and are connected with the limiting plate, limiting plate bottom and second supporting shoe bottom inner wall fixed connection.
The beneficial effects of the invention are as follows:
(1) According to the invention, the electrode holder clamping rod and the positioning rod are directly placed in the placing opening, so that the tensioning clamp is convenient to quickly fix the clamping rod, the tensioning clamp is not required to be adjusted to fix the clamping rod, the quick fixing is convenient, after detection is finished, the clamping rod is convenient to automatically push to move out of the tensioning clamp and move to the top of the detection platform, the electrode holder can be directly taken out, the electrode holder is convenient to load and unload, quick positioning detection is convenient, and the working efficiency is improved;
(2) According to the invention, the positioning nails are fixed, the positions of the positioning nails are limited, and the positioning nails are conveniently subjected to dotting measurement, so that the stability of the electrode holder in detection is further improved, when the positioning nails are driven to move towards the outside of the placement opening through the clamping rods after detection is finished, the positioning nails are further conveniently pushed to move to the bottom of the detection platform through the movement of the supporting blocks, and the detection effect of the electrode holder is further improved.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments.
The invention provides an electrode on-line detection mounting seat, as shown in figures 1 to 7, which comprises a sheet metal box body 1, wherein the top of the sheet metal box body 1 is provided with a detection platform 2, one side of the detection platform 2 is provided with a status indicator lamp 3 positioned at the top of the sheet metal box body 1, one side of the sheet metal box body 1 is provided with a display page 4, the inside of the sheet metal box body 1 is provided with a low-voltage power supply 5 positioned at the rear side of the display page 4, one side of the low-voltage power supply 5 is provided with an IO expansion module 6, the inside of the sheet metal box body 1 is provided with a mounting block 7 positioned at the bottom of the detection platform 2, the bottom of the mounting block 7 is fixedly provided with a first supporting block 8, one side of the first supporting block 8 is provided with a data processing box 9, the inside of the first supporting block 8 is provided with a tensioning cylinder 10, two sides of the tensioning cylinder 10 are provided with a displacement sensor 11, the bottom of the displacement sensor 11 is provided with a detection rod 12, the top of the tensioning cylinder 10 is provided with a tensioning chuck 13, the top of the detection platform 2 is provided with a placement opening, the top of the detection platform 2 is provided with an electrode seat 14, the bottom of the electrode seat 14 is fixedly provided with a flexible locating plate 15, the bottom of the flexible locating plate 15 is fixedly provided with a locating nail 16, the middle of the bottoms of the electrode seat 14 and the flexible locating plate 15 is fixedly provided with a clamping rod 17, one end of the clamping rod 17 is positioned in the tensioning chuck 13, both ends of the top of the installation block 7 are fixedly provided with a first motor 18, the output end of the first motor 18 is fixedly connected with a threaded rod 19, one end of the threaded rod 19 is rotationally connected with a fixed plate 20, one end of the threaded rod 19 is in threaded connection with a movable block 21, the bottom of the movable block 21 is in sliding connection with the inner wall of the bottom of the installation block 7, one end of the clamping rod 17 is provided with a fixed ring 22, both ends of the fixed ring 22 are hinged with a pushing plate 23, one end of the pushing plate 23 is hinged with the movable block 21, both inner walls of the two sides of the fixed ring 22 are fixedly connected with a first electric push rod 24, the clamping block 25 is fixedly connected to one end of the first electric push rod 24, the connecting spring 26 is fixedly connected to the bottom of the fixing ring 22, the connecting ring 27 is fixedly connected to the bottom of the connecting spring 26, the second electric push rods 28 are fixedly installed at two ends of the connecting ring 27, a slot is formed in the top of the tensioning clamp 13, one end of the second electric push rod 28 is inserted into the slot, a groove is formed in the middle of the connecting ring 27, the third electric push rod 29 is fixedly connected to the inner wall of the groove, and a supporting plate 30 is arranged at one end of the third electric push rod 29.
Placing the electrode holder 14 on the top of the detection platform 2, enabling the positioning nails 16 and the clamping rods 17 to be positioned in the placement opening, enabling the bottom of the positioning nails 16 to be attached to the top of the detection rod 12, controlling the tensioning clamp heads 13 to clamp the clamping rods 17 at the bottom of the electrode holder 14 through the display page 4, pushing the tensioning clamp heads 13 to move upwards through the tensioning air cylinders 10, enabling the clamping rods 17 to drive the electrode holder 14 at the top to move upwards with the positioning nails 16, detecting through the displacement sensor 11, dotting the positioning nails 16 of the electrode holder 14, displaying measured data on an interface after being directly processed through matched software, controlling the tensioning clamp heads 13 to not fix the clamping rods 17 any more when the electrode holder 14 needs to be moved out of the detection platform 2 after the detection is completed, driving the clamping blocks 25 to move through starting the first electric push rods 24, enabling the clamping blocks 25 to be attached to two sides of the bottom of the clamping rods 17, the clamping rod 17 is clamped by the clamping block 25, the first motor 18 is started to drive the threaded rod 19 to rotate, the moving block 21 moves towards the direction close to the tensioning clamp head 13 under the limiting action of sliding connection between the bottom of the moving block 21 and the inner wall of the mounting block 7, the moving block 21 moves to deflect the pushing plate 23, when the fixing ring 22 drives the clamping block 25 to move upwards, the connecting spring 26 is driven to stretch, the bottom of the clamping rod 17 moves towards the top of the tensioning clamp head 13, when the bottom of the clamping rod 17 completely moves to the top of the tensioning clamp head 13, the third electric push rod 29 in the starting groove pushes the supporting plate 30 to move to the middle of the connecting ring 27, thereby supporting the bottom of the clamping rod 17, and then one end of the second electric push rod 28 is not spliced with a slot at the top of the tensioning clamp head 13 any more through the contraction of the second electric push rod 28, when the fixing ring 22 continues to move upwards, the connecting ring 27 and the supporting plate 30 are driven to move upwards, so that the bottom of the clamping rod 17 is pushed by the supporting plate 30 to move upwards, the electrode holder 14 can be taken out directly, feeding and discharging of the electrode holder 14 are facilitated, and the working efficiency is improved.
As shown in fig. 1 to 3, an external motor interface 31 is disposed at the rear side of the sheet metal box 1 and at the rear side of the display page 4, the external motor interface 31 is disposed at the top of the low-voltage power supply 5 and the IO expansion module 6, a clamping block 32 is disposed at the bottom of the electrode holder 14, a fixing rod 33 is fixedly connected at the bottom of the clamping block 32, the positioning nail 16 and the clamping rod 17 penetrate through the clamping block 32 to extend into the placing port, a fixing hole is formed at the top of the detection platform 2 and between the placing ports, and the fixing rod 33 is spliced with the fixing hole.
The power supply is connected through the external motor interface 31, the electrode holder 14 is fixed at the top of the detection platform 2 through the clamping block 32 which is convenient to plug in the fixing rod 33 and the fixing hole, the positioning nail 16 and the clamping rod 17 which are convenient to place through the placing opening move the inside of the detection platform 2, and the positioning nail 16 is convenient to perform dotting measurement and detection by utilizing the detection rod 12 and the displacement sensor 11.
As shown in fig. 3, 4 and 8, the detection platform 2 is internally provided with moving grooves at two sides of the placement opening, fixing structures 34 are respectively arranged at two sides of the positioning nails 16 and inside the moving grooves, the mounting block 7, the first supporting block 8 and the inner wall of the sheet metal box 1 are fixedly mounted, the displacement sensor 11 and the tensioning cylinder 10 are positioned inside the first supporting block 8, and the detection rod 12 and the tensioning clamp 13 are positioned inside the mounting block 7.
The fixed structure 34 is convenient to install through the movable groove, the positioning nail 16 is fixed through the fixed structure 34, when the movement of the positioning nail 16, the stability of the movement is improved, the positioning nail is enabled to rapidly move out of the detection platform 2, the detection of the next electrode holder 14 is facilitated, the detection rod 12 and the tensioning clamp 13 are convenient to install through the installation block 7, the displacement sensor 11 and the tensioning cylinder 10 are convenient to install through the first support block 8, and the detection of the electrode holder 14 is facilitated.
As shown in fig. 5 to 7, the first motor 18, the threaded rod 19, the moving block 21 and the pushing plate 23 are arranged in a central symmetry manner with the tensioning clamp 13, the pushing plate 23 is positioned between the detecting rods 12, the bottom of the fixing plate 20 is fixedly mounted on the inner wall of the bottom of the mounting block 7, the first electric push rod 24 and the clamping block 25 are positioned on the left side and the right side of the clamping rod 17, the two ends of the clamping block 25 positioned on the left side of the clamping rod 17 are fixedly connected with limiting rods 35, and the two ends of the clamping block 25 positioned on the right side of the clamping rod 17 are provided with limiting grooves which are spliced with the limiting rods 35.
Through the first motor 18, threaded rod 19, movable block 21 and the push plate 23 that the symmetry set up are in order to tighten chuck 13, when solid fixed ring 22 removes, make the inside first electric putter 24 of solid fixed ring 22 press from both sides tight with clamping block 25 to clamping lever 17, increase stability, be convenient for first motor 18 drive threaded rod 19 rotation through solid fixed plate 20, make threaded rod 19 keep stable when rotating, when first electric putter 24 promotes clamping block 25 and clamping lever 17 surface laminating, clamping lever 17 both sides laminating, make limiting rod 35 peg graft with limiting groove, make clamping block 25 clamp clamping lever 17, be convenient for improve clamping block 25's fastness, thereby can drive clamping lever 17 removal when solid fixed ring 22 removes of being convenient for, the feeding and discharging of electrode holder 14.
As shown in fig. 6 to 7, the connecting spring 26 is located at two ends of the bottom of the fixing ring 22, the connecting ring 27 is located at the top of the tensioning clamp 13 and is located at the bottom of the fixing ring 22, the second electric push rod 28 is located at two sides of the connecting spring 26, a fixing opening is formed in the middle of the connecting spring, the fixing opening is located in the middle of the groove, the supporting plate 30 is located at two sides of the inside of the groove, a mounting groove is formed in one side, close to the third electric push rod 29, of the supporting plate 30, one end of the third electric push rod 29 is fixedly mounted with the mounting groove, and the shape of the supporting plate 30 is semicircular.
When the fixed ring 22 moves, the connecting spring 26 is driven to stretch, when the fixed ring 22 drives the bottom of the clamping rod 17 of the clamping block 25 to move out of the tensioning chuck 13, the third electric push rod 29 in the groove is started, the supporting plate 30 moves from the inside of the groove to the inside of the fixed port, one sides of the two supporting plates 30 are attached to each other, the fixed port is blocked, the supporting plate 30 is positioned at the bottom of the clamping rod 17, the second electric push rods 28 at two ends of the connecting ring 27 are restarted to shrink, the telescopic ends of the second electric push rods 28 are not spliced with the slots at the top of the tensioning chuck 13 any more, the connecting ring 27 is not fixed at the top of the tensioning chuck 13 any more, when the fixed ring 22 moves, the connecting ring 27 is driven to move with the supporting plate 30 through the connecting spring 26, the clamping rod 17 is pushed to move when the supporting plate 30 moves, so that the stability of the clamping rod 17 moves is improved, the clamping rod 17 is pushed to move out of the detection platform 2, and the next electrode holder 14 is replaced to carry out detection.
As shown in fig. 9 to 11, the fixing structure 34 includes a first fixing block 340 and a second fixing block, a sliding groove is formed on one side, close to the positioning nail 16, of the first fixing block 340 and the second fixing block, a sliding block 341 is slidably connected inside the sliding groove, a second supporting block 342 is fixedly connected on one side of the sliding block 341, a moving opening is formed at one end of the second supporting block 342, a moving opening is formed between the moving openings and positioned at the top of the second supporting block 342, a moving plate 343 is arranged inside the moving opening, a telescopic rod 344 is fixedly connected to the bottom of the moving plate 343, a connecting block 345 is fixedly connected to the bottom of the moving plate 343, a first rack 346 is fixedly connected to one end of the connecting block 345, a gear 347 is meshed with one side of the first rack 346, a second rack 348 is meshed with one side of the gear 347, a connecting plate is fixedly connected to one side of the second rack 348, and an electric telescopic block 349 is fixedly connected to one side of the connecting plate.
When the positioning nail 16 is positioned inside the placement opening, the positioning nail 16 pushes the second supporting block 342 to move downwards, so that the sliding block 341 moves along the sliding groove, meanwhile, the two ends of the bottom of the positioning nail 16 are positioned at the top of the second supporting block 342, the moving plate 343 is extruded by the weight of the positioning nail 16, the moving plate 343 moves towards the inside of the second supporting block 342 through the movement opening, meanwhile, the bottom telescopic rod 344 contracts, the moving plate 343 drives the first racks 346 and the connecting blocks 345 at the two ends of the bottom to move downwards, the gear 347 rotates, the second racks 348 drive the connecting plates and the electric telescopic blocks 349 to move towards the top of the second supporting block 342 through the movement opening, the electric telescopic blocks 349 move to the two sides of the bottom end of the positioning nail 16, and the electric telescopic blocks 349 are started to stretch, so that the stability of fixing the positioning nail 16 is improved, and the movement and detection of the positioning nail 16 are facilitated.
As shown in fig. 9 to 11, the first fixing block 340, the second fixing block bottom and the inner wall of the moving slot are fixedly installed, through holes are formed on two sides of the placement opening and on one side of the moving slot, a tension spring is fixedly connected to the bottom of the second supporting block 342, the bottom of the tension spring is fixedly connected with the inner wall of the bottom of the moving slot, one end of the second supporting block 342 passes through the through holes to extend into the placement opening, one side of the positioning nail 16 is located at the top of the second supporting block 342, one ends of the electric telescopic block 349 and the second rack 348 are located at the top of the moving opening, and the other end of the electric telescopic block 349 is located on two sides of the bottom end of the positioning nail 16.
The sliding block 341 is convenient to drive the second supporting block 342 to move through the first fixing block 340 and the second fixing block, and the second supporting block 342 is compressed when moving, so that after the detection of the positioning nail 16 is completed, the second supporting block 342 is convenient to push to move through the action of the stretching spring, the positioning nail 16 at the top of the second supporting block 342 can rapidly move to the outside of the detection platform 2, the positioning nail 16 is convenient to be limited through the electric telescopic block 349, the bottom end of the positioning nail 16 is convenient to keep stable, and the detection is convenient.
As shown in fig. 9 to 11, the moving plate 343 is located at the top of the second supporting block 342 and is located at two ends of the bottom of the positioning nail 16, the compression springs are sleeved on the outer surface of the telescopic rod 344, the bottom of the telescopic rod 344 is fixedly mounted on the inner wall of the bottom of the second supporting block 342, the first rack 346 is located at two ends of the bottom of the moving plate 343, the first rack 346, the gear 347, the second rack 348, the connecting block 345, the connecting plate and the electric telescopic block 349 are arranged in a central symmetry manner by the second supporting block 342, the bottom of the electric telescopic block 349 is fixedly connected with the fixed springs, the bottom of the fixed springs is fixedly connected with the inner wall of the bottom of the second supporting block 342, the connecting block 345 is L-shaped, the first rack 346 and the second rack 348 are located at the bottom of the moving opening, the middle of the gear 347 is fixedly connected with the rotating rod, the two ends of the rotating rod are both rotationally connected with the limiting plates, and the bottom of the limiting plate is fixedly connected with the inner wall of the bottom of the second supporting block 342.
The movable plate 343 is conveniently connected with the first rack 346 through the L-shaped connecting block 345, when the movable plate 343 moves, the first rack 346 can be driven to drive the connecting block 345 to move, the telescopic rod 344 stretches and contracts to compress a compression spring, the gear 347 drives the rotating rod to rotate, two ends of the rotating rod rotate on one side of the limiting plate, the gear 347 keeps stable when rotating, the gear 347 drives the second rack 348 to move with the connecting plate, the electric telescopic block 349 moves to the top of a movable opening, the fixed spring stretches, and when the electric telescopic block 349 stretches, the limitation on the bottom end of the positioning nail 16 is further increased.
Working principle: when in use, the electrode holder 14 is placed on the top of the detection platform 2, the positioning nails 16 and the clamping rods 17 are positioned in the placement opening, the bottoms of the positioning nails 16 are attached to the top of the detection rod 12, the clamping rods 17 at the bottoms of the electrode holders 14 are clamped by the tensioning clamping heads 13 under the control of the display page 4, the tensioning clamping heads 13 are pushed to move upwards by the tensioning air cylinders 10, the clamping rods 17 drive the electrode holders 14 at the tops to move upwards with the positioning nails 16, the displacement sensor 11 is utilized for detection, the positioning nails 16 of the electrode holders 14 are subjected to dotting measurement, the measured data are directly displayed on an interface after being processed by matched software, when the electrode holders 14 are required to be moved out of the detection platform 2 after the detection is finished, the clamping rods 17 are not fixed by the tensioning clamping heads 13, the clamping blocks 25 are driven to move by the starting of the first electric push rods 24, the clamping blocks 25 are attached to two sides at the bottom ends of the clamping rods 17, the two ends of the clamping block 25 are mutually attached, so that the limiting rod 35 is spliced with the limiting groove, the clamping block 25 is used for clamping the clamping rod 17, the first motor 18 is started to drive the threaded rod 19 to rotate, the moving block 21 moves towards the direction close to the tensioning clamp 13 under the limiting action of sliding connection of the bottom of the moving block 21 and the inner wall of the mounting block 7, the pushing plate 23 is deflected by the movement of the moving block 21, when the fixing ring 22 drives the clamping block 25 to move upwards, the connecting spring 26 is driven to stretch, the bottom of the clamping rod 17 moves towards the top of the tensioning clamp 13, when the bottom of the clamping rod 17 completely moves to the top of the tensioning clamp 13, the third electric push rod 29 in the starting groove pushes the supporting plate 30 to move to the middle of the connecting ring 27, one side of the supporting plate 30 is attached, the bottom of the clamping rod 17 is supported, and then the second electric push rod 28 contracts, one end of the second electric push rod 28 is not inserted into the slot at the top of the tensioning clamp 13, and the connecting ring 27 and the supporting plate 30 are driven to move upwards when the fixing ring 22 moves upwards, so that the supporting plate 30 pushes the bottom of the clamping rod 17 to move upwards, and the electrode holder 14 can be taken out directly.
When the positioning nail 16 is positioned in the placement opening, the positioning nail 16 pushes the second supporting block 342 to move downwards, the sliding block 341 moves along the sliding groove, meanwhile, the two ends of the bottom of the positioning nail 16 are positioned at the top of the second supporting block 342, the tension spring is compressed, the moving plate 343 is extruded by the weight of the positioning nail 16, the moving plate 343 moves upwards towards the inside of the second supporting block 342 through the movement opening, meanwhile, the bottom telescopic rod 344 and the compression spring are contracted, the moving plate 343 drives the first racks 346 and the connecting blocks 345 at the two ends of the bottom to move downwards, the gear 347 drives the rotating rod to rotate, the second racks 348 drive the connecting plates and the electric telescopic blocks 349 to move towards the top of the second supporting block 342 through the movement opening, the electric telescopic blocks 349 are moved to the two sides of the bottom of the positioning nail 16, the electric telescopic blocks 349 are started to stretch again, the stability of fixing the positioning nail 16 is improved, the positioning nail 16 is conveniently limited, when the positioning nail 16 moves upwards, the positioning nail 16 is pushed to move upwards through the tension spring, meanwhile, the positioning nail 16 does not extrude the moving plate 343, the moving plate 343 moves to the movable plate 343 to the position the movable opening under the action of the compression spring, the action of the first racks 346 and the electric telescopic block 349 are driven by the electric telescopic block 349, the electric telescopic block 349 moves the moving towards the movable opening, and the inner side of the electrode 349 under the action of the first racks and the electric racks 349 are conveniently fixed to the fixed by the fixed to the fixed position electrode 349.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting.