CN211804277U

CN211804277U - Processing system for thermocouple of gas stove

Info

Publication number: CN211804277U
Application number: CN201922263137.7U
Authority: CN
Inventors: 孙立波
Original assignee: Ningbo Wanbao Electric Co ltd
Current assignee: Ningbo Wanbao Electric Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-10-30
Anticipated expiration: 2029-12-16

Abstract

The utility model relates to a gas-cooker thermocouple system of processing relates to the technical field of thermocouple processing, has solved the thermocouple and has need the manual work to remove to different processing equipment department in the course of working and process, has caused the waste of time during the removal, leads to the problem that the machining efficiency of thermocouple is low, and it includes: a work table; a terminal machine; a connection terminal welding device; a thermocouple terminal feeding mechanism; a temporary release mechanism; a thermocouple terminal welding mechanism; a discharging mechanism; and a mobile conveying mechanism. The utility model discloses have the automation that has realized thermocouple production and processing, improved the effect of the machining efficiency of thermocouple.

Description

Processing system for thermocouple of gas stove

Technical Field

The utility model belongs to the technical field of the technique of thermocouple processing and specifically relates to a gas-cooker thermocouple system of processing is related to.

Background

The thermocouple is a commonly used temperature measuring element in a temperature measuring instrument, directly measures temperature, converts a temperature signal into a thermal electromotive force signal, and converts the thermal electromotive force signal into the temperature of a measured medium through an electric instrument. The thermocouple has a wide application range in the industrial field, and has various structural forms according to different application environments.

As shown in fig. 1, a conventional thermocouple 110 for a gas range includes a thermocouple wire 1101, a thermocouple terminal 1102 provided at one end of the thermocouple wire 1101, and a connection terminal 1103 provided at the other end of the thermocouple wire 1101; the thermocouple terminal 1102 and the connection terminal 1103 are welded to the thermocouple wire 1101.

When an existing gas stove thermocouple is processed, a thermocouple lead is moved to a terminal machine to punch a connecting terminal to one end of the thermocouple lead, then the connecting terminal and the thermocouple lead are moved to a first welding device to weld the connecting terminal and the thermocouple lead, then the connecting terminal and the thermocouple lead are moved to a second welding device to weld a thermocouple terminal to the other end of the thermocouple lead, and finally processing is completed to discharge materials.

The above prior art solutions have the following drawbacks: the thermocouple needs to be manually moved to different processing equipment for processing in the processing process, time is wasted during movement, the processing efficiency of the thermocouple is low, and an improved space is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gas-cooker thermocouple system of processing has realized the automation of thermocouple production and processing, has improved the machining efficiency of thermocouple.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a gas range thermocouple processing system comprising:

a work table;

the terminal machine is arranged at one end of the workbench and used for stamping the connecting terminal to one end of the thermocouple lead;

the connecting terminal welding device is arranged at one end of the workbench;

the thermocouple terminal feeding mechanism is arranged at the other end of the workbench, is opposite to the connecting terminal welding device and is used for driving the thermocouple terminal to move to the thermocouple terminal welding mechanism;

the temporary placing mechanism is arranged on one side, away from the terminal machine, of the connecting terminal welding device on the workbench, clamps and temporarily releases the thermocouple;

the thermocouple terminal welding mechanism is arranged on one side of the workbench, which is close to the thermocouple terminal feeding mechanism, and is used for welding the thermocouple terminal to the other end of the thermocouple lead;

the discharging mechanism drives the thermocouple lead, the thermocouple terminal and the connecting terminal to discharge; and

and the two movable conveying mechanisms are arranged on the workbench and are used for conveying the thermocouple wires from the terminal machine to the connecting terminal welding mechanism and the discharging mechanism in sequence.

By adopting the technical scheme, the movable conveying mechanism can convey the thermocouple wires to the connecting terminal welding mechanism from the terminal machine and convey the thermocouple wires to the discharging mechanism from the connecting terminals without manual intervention, so that the workpiece to be machined is moved, the automation of the assembly welding process of the thermocouple wires, the connecting terminals and the thermocouple terminals is realized, and the processing production efficiency of the thermocouple is improved.

The utility model discloses further set up to: the mobile conveying mechanism comprises:

the rodless cylinder is arranged on the workbench and is horizontally arranged;

the third lifting cylinder is arranged on the sliding block of the rodless cylinder, and the piston rod is arranged vertically upwards;

the supporting rod is arranged on a piston rod of the third lifting cylinder and is horizontally arranged;

the clamping cylinders are three and are uniformly arranged on the upper side of the supporting rod and are vertically arranged upwards, the distance between every two adjacent clamping cylinders is equal to the distance between the terminal machine and the connecting terminal welding device, the distance between the connecting terminal welding device and the temporary release mechanism, the distance between the thermocouple terminal welding mechanism and the temporary release mechanism and the distance between the temporary release mechanism and the discharge mechanism; and

and the clamping claw is connected with the clamping cylinder to clamp the thermocouple wire.

By adopting the technical scheme, the clamping cylinder drives the clamping claws to clamp the thermocouple wire, the thermocouple wire can be conveyed to the connecting terminal welding mechanism from the terminal machine and conveyed to the discharging mechanism from the connecting terminal under the drive of the rodless cylinder, manual intervention is not needed to move a workpiece to be machined, the automation of the assembly welding process of the thermocouple wire, the connecting terminal and the thermocouple terminal is realized, and the processing production efficiency of the thermocouple is improved.

The utility model discloses further set up to: the discharge mechanism comprises:

the discharging rods are arranged on one side, away from the terminal machine and the thermocouple lead blanking device, of the workbench, the number of the discharging rods is two, and the distance between the two discharging rods is not more than the length of the thermocouple lead;

the suspension rod is arranged at the upper end of the discharge rod;

the discharging cylinder is arranged on the suspension rod and is arranged vertically downwards; and

and the discharging clamping jaw is connected with the discharging cylinder to clamp the thermocouple wire.

Through adopting above-mentioned technical scheme, remove conveying mechanism and carry the thermocouple of accomplishing to ejection of compact clamping jaw, ejection of compact cylinder orders about the fixed thermocouple of ejection of compact clamping jaw centre gripping, removes conveying mechanism and removes afterwards and keeps away from the ejection of compact claw, and ejection of compact cylinder orders about ejection of compact clamping jaw at last and loosens the thermocouple, has realized the automation of the ejection of compact, and need not manual intervention.

The utility model discloses further set up to: the thermocouple terminal feeding mechanism comprises a vibrating disc arranged on one side of the workbench, a feeding channel arranged on the workbench and connected with the vibrating disc, a material blocking assembly arranged at one end, far away from the vibrating disc, of the feeding channel on the workbench, and a conveying assembly arranged on the workbench and arranged on the feeding channel to clamp and convey a thermocouple terminal to the thermocouple terminal welding mechanism;

the material blocking assembly comprises:

the two material blocking claws are arranged at one end of the feeding channel away from the vibrating disk; and

the material blocking cylinder is arranged on the workbench and connected with the material blocking claw to drive the two material blocking claws to open or close;

the delivery assembly comprises:

the material clamping cylinder is arranged right above the feeding channel on the workbench;

the material clamping claw is connected with the material clamping cylinder to clamp the thermocouple terminal; and

and the conveying cylinder is arranged right above the feeding channel on the workbench, and a piston rod is connected with the material clamping cylinder so as to drive the material clamping cylinder to move to the thermocouple terminal welding mechanism.

By adopting the technical scheme, the material blocking cylinder drives the two material blocking claws to be closed so as to limit the thermocouple terminal, so that the thermocouple terminal is not easy to slide off the feeding channel, and the feeding stability of the feeding channel is improved; the material clamping cylinder orders about the material clamping claw to the material loading way and is close to the thermocouple terminal that keeps off the material claw and carry out the centre gripping, and the piston rod extension of carrying the cylinder drives the material clamping cylinder and carries the thermocouple terminal to thermocouple terminal welding mechanism, has realized the automatic feeding of thermocouple terminal.

The utility model discloses further set up to: the thermocouple terminal welding mechanism includes:

the first welding gun is arranged on the workbench and used for welding the thermocouple terminal and the thermocouple lead;

the first lifting cylinder is arranged on the workbench to drive the first welding gun to lift;

the fixed block is fixed on a piston rod of the first lifting cylinder;

the fixed disc is fixed on the fixed block through two fixed bolts;

the first clamping plate is integrally arranged on one side, away from the fixed block, of the fixed disc; and

and the second clamping plate is fixed on one side of the first clamping plate, which is far away from the fixed plate, through a bolt and is matched with the first clamping plate to clamp and fix the first welding gun.

By adopting the technical scheme, the first welding gun is clamped and fixed through the first clamping plate and the second clamping plate, the structure is simple, the welding gun is convenient to disassemble and assemble, and the disassembling and replacing efficiency of the welding gun is improved; the first lifting cylinder drives the first welding gun to descend to weld the thermocouple terminal and the thermocouple lead, and after welding is completed, the first lifting cylinder drives the welding gun to ascend, so that automatic welding of the thermocouple terminal and the thermocouple lead is realized.

The utility model discloses further set up to: the fixed disk is provided with an arc-shaped hole which is concentrically arranged with the fixed disk and is used for the fixed bolt to penetrate and slide.

Through adopting above-mentioned technical scheme, welder's welding angle accessible fixing bolt adjusts with sliding in arc hole, has improved welder welding angle's variety.

The utility model discloses further set up to: and clamping grooves are formed in one sides, close to the first welding gun, of the first clamping plate and the second clamping plate.

By adopting the technical scheme, the contact area of the first clamping plate, the second clamping plate and the welding gun is increased due to the arrangement of the clamping grooves, so that the first clamping plate and the second clamping plate can clamp the welding gun more firmly.

The utility model discloses further set up to: the thermocouple terminal welding mechanism also comprises a thermocouple terminal clamping component arranged on one side, close to the conveying component, of the welding gun on the workbench and a thermocouple lead clamping component arranged on one side, far away from the conveying component, of the welding gun on the workbench;

the thermocouple terminal clamping assembly comprises a first clamping cylinder and a first clamping jaw, the first clamping cylinder is arranged on one side, close to the conveying assembly, of the welding gun on the workbench, and the first clamping jaw is connected with the first clamping cylinder to clamp the thermocouple terminal;

the thermocouple wire clamping assembly comprises a clamping cylinder and a clamping claw, wherein the clamping cylinder is arranged on one side, away from the conveying assembly, of the welding gun on the workbench, and the clamping claw is connected with the clamping cylinder to clamp the thermocouple wire.

By adopting the technical scheme, the first clamping cylinder drives the first clamping jaw to clamp and fix the thermocouple terminal without manually clamping the thermocouple terminal, so that the first welding gun can conveniently weld the thermocouple terminal and a thermocouple wire, and the labor intensity of operators is reduced; the clamping cylinder drives the first clamping claw to clamp the thermocouple wire so that the thermocouple wire is placed on the thermocouple terminal, and the thermocouple terminal and the thermocouple wire are conveniently welded together through a welding gun.

The utility model discloses further set up to: the connecting terminal welding device comprises a vertical plate which is arranged on the workbench and is vertically arranged, a connecting terminal welding mechanism arranged on the vertical plate and a clamping mechanism arranged on the workbench;

the clamping mechanism comprises:

the second clamping cylinder is arranged on the workbench;

the second clamping jaw is connected with the second clamping cylinder to clamp and fix the thermocouple wire;

connecting terminal welding mechanism includes:

the second welding gun is arranged on the vertical plate;

the second lifting cylinder is arranged at the upper end of the vertical plate, and the piston rod is connected with the second welding gun to drive the second welding gun to lift;

the lifting block is connected to the piston rod of the second lifting cylinder in a threaded manner;

the fixing plate is integrally arranged on one side, away from the vertical plate, of the lifting block and is perpendicular to the vertical plate, and an inserting hole for inserting the second welding gun is formed in the upward direction of the fixing plate;

the tin conveying pipe is arranged on one side of the second welding gun, and the pipe orifice of the tin conveying pipe faces the head of the second welding gun; and

and the soldering tin conveying system is arranged on the workbench and is used for conveying soldering tin wires.

By adopting the technical scheme, the second clamping cylinder controls the second clamping jaw to clamp the thermocouple wire without manual intervention, so that the automation of thermocouple wire clamping is realized, the labor intensity of operators is reduced, and the clamping efficiency of the thermocouple wire is improved; the tin soldering conveying system is matched with the tin feeding pipe to convey a tin soldering wire, the second lifting cylinder drives the welding gun to lift so as to weld the thermocouple wire and the connecting terminal, automatic welding of the welding gun to the thermocouple wire and the connecting terminal is achieved, and welding efficiency of the thermocouple wire and the connecting terminal is improved.

The utility model discloses further set up to: the tin tube fixing device also comprises a fixing component for fixing the tin tube and a clamping component for clamping the connecting terminal;

the fixed assembly comprises a first connecting rod hinged on the lifting block, a second connecting rod hinged at one end of the first connecting rod far away from the lifting block, a connecting plate hinged at one end of the second connecting rod far away from the first connecting rod, and two clamping blocks integrally arranged at one side of the connecting plate far away from the second connecting rod and used for clamping and conveying the tin tubes;

the clamping assembly comprises a supporting plate, a driving air cylinder and a pressing plate, wherein the supporting plate is arranged on one side, close to the connecting terminal welding mechanism, of the vertical plate and is perpendicular to the vertical plate, the pressing plate is arranged on the workbench and is higher than the supporting plate, the pressing plate is arranged on a piston rod of the driving air cylinder, and a penetrating hole for the piston rod of the driving air cylinder to penetrate is formed in the pressing plate.

By adopting the technical scheme, the first connecting rod is hinged with the lifting block, the first connecting rod is pivoted with the second connecting rod, the second connecting rod is hinged with the connecting plate, and the tin conveying pipe is clamped and fixed on the clamping block, so that the position and the angle of the tin conveying pipe can be conveniently adjusted, and the application range of the tin conveying pipe is improved; the driving cylinder drives the pressing plate to descend to compress and fix the connecting terminal on the supporting plate, so that the connecting terminal and the thermocouple wire are not easy to bend downwards when the welding mechanism welds the thermocouple wire and the connecting terminal, the connecting terminal and the thermocouple wire are convenient to weld by the welding mechanism, and the welding quality of the welding mechanism to the connecting terminal and the thermocouple wire is improved.

To sum up, the utility model discloses a beneficial technological effect does:

the automation of thermocouple production and processing is realized, and the processing efficiency of the thermocouple is improved.

Drawings

Fig. 1 is a schematic structural view of a conventional thermocouple for a gas range.

Fig. 2 is a schematic structural view of a thermocouple processing system for a gas stove.

Fig. 3 is a schematic structural diagram of the worktable, the thermocouple terminal feeding mechanism and the thermocouple terminal welding mechanism.

Fig. 4 is a partial structural schematic view of the material blocking assembly and the conveying assembly.

Fig. 5 is a schematic structural view of a thermocouple terminal welding mechanism.

Fig. 6 is an exploded view of the second clamping plate, the first welding gun, the first clamping plate and the fixing block.

Fig. 7 is a schematic structural view of the thermocouple terminal clamping assembly.

Fig. 8 is an exploded view of the clamping cylinder and clamping jaw.

Fig. 9 is an exploded schematic view of two clamping jaws.

Fig. 10 is a schematic structural view of the thermocouple terminal welding mechanism and the movable conveying mechanism and the discharging mechanism.

Fig. 11 is a schematic structural diagram of the vertical plate and connecting terminal welding mechanism, the clamping assembly and the clamping mechanism.

Fig. 12 is an exploded view of the hold down plate with the weld gun, clamping plate, elevator block.

Fig. 13 is a schematic structural view of the clamping assembly.

Fig. 14 is a schematic structural view of the fixing assembly.

Fig. 15 is a schematic structural view of the moving conveyance mechanism.

Fig. 16 is a schematic structural diagram of a pause mechanism.

Fig. 17 is a schematic structural view of the discharging mechanism.

In the figure, 1, a workbench; 11. a first mounting table; 111. a fixed table; 12. a second mounting table; 13. a reinforcing plate; 2. a terminal machine; 3. a connection terminal welding device; 4. a thermocouple terminal feeding mechanism; 5. a thermocouple terminal welding mechanism; 6. a discharging mechanism; 7. a mobile conveying mechanism; 71. a rodless cylinder; 72. a third lifting cylinder; 73. a support bar; 74. a clamping cylinder; 75. a gripper jaw; 61. a discharge rod; 62. a suspension rod; 63. a discharging cylinder; 64. a discharging clamping jaw; 41. a vibrating pan; 42. a feeding channel; 43. the material blocking component; 44. a delivery assembly; 431. a material blocking claw; 432. a material blocking cylinder; 441. a material clamping cylinder; 442. a material clamping claw; 443. a conveying cylinder; 51. a first welding gun; 511. a welding gun arm; 52. a first lifting cylinder; 53. a fixed block; 54. fixing the disc; 55. a first clamping plate; 56. a second clamping plate; 541. an arc-shaped hole; 551. a clamping groove; 57. a thermocouple terminal clamping assembly; 58. a thermocouple wire clamping assembly; 571. a first clamping cylinder; 572. a first clamping jaw; 573. a clamping groove; 581. a clamping cylinder; 582. a clamping jaw; 5821. a clasping part; 5822. a connecting portion; 5823. a holding groove; 59. fixing the bolt; 31. a vertical plate; 311. folding the plate; 312. folding the plate; 32. a connecting terminal welding mechanism; 33. a clamping mechanism; 331. a second clamping cylinder; 332. secondly, clamping jaws are installed; 321. a second welding gun; 322. a second lifting cylinder; 323. a lifting block; 324. a fixing plate; 3241. inserting holes; 325. feeding a tin tube; 326. a solder delivery system; 327. a clamping plate; 3271. a groove is arranged in a penetrating way; 328. a compression plate; 8. a fixing assembly; 9. a clamping assembly; 81. a first link; 82. a second link; 83. a connecting plate; 84. a clamping block; 85. driving the screw; 91. a support plate; 92. a driving cylinder; 93. pressing a plate; 911. perforating holes; 10. a temporary release mechanism; 101. temporarily placing the cylinder; 102. temporarily placing the clamping jaw; 110. a thermocouple of a gas stove; 1101. a thermocouple wire; 1102. a thermocouple terminal; 1103. and a connection terminal.

Detailed Description

Referring to fig. 2, a processing system for a thermocouple 110 of a gas stove comprises a workbench 1, a terminal machine 2, a connection terminal welding device 3, a thermocouple terminal feeding mechanism 4, a thermocouple terminal welding mechanism 5, a discharging mechanism 6, a temporary placing mechanism 10 and a moving conveying mechanism 7; a first mounting table 11 and a second mounting table 12 are fixed on the workbench 1, the first mounting table 11 and the second mounting table 12 are respectively arranged at two ends of the workbench 1, the thermocouple terminal welding mechanisms 5 and the thermocouple terminal feeding mechanisms 4 are both mounted on the first mounting table 11, the terminal machine 2 and the connecting terminal welding device 3 are both mounted on the second mounting table 12, the number of the movable conveying mechanisms 7 is two, the two movable conveying mechanisms 7 are in one-to-one correspondence with the first mounting table 11 and the second mounting table 12, the two movable conveying mechanisms 7 are respectively arranged at opposite sides of the first mounting table 11 and the second mounting table 12, the terminal machine 2 is arranged at the right side of the second mounting table 12, the connecting terminal welding device 3 is arranged at the left side of the terminal machine 2, and the connecting terminal welding device 3 and the connecting terminal welding mechanism 5 are arranged oppositely; the number of the temporary placing mechanisms 10 is two, the temporary placing mechanisms are in one-to-one correspondence with the first installation table 11 and the second installation table 12, and the two temporary placing mechanisms 10 are respectively fixed on the left side of the first workbench 1 and the left side of the second workbench 1; the discharging mechanism 6 is fixed on the left side of the workbench 1, and the discharging mechanism 6 is used for controlling the discharging of the thermocouple; the terminal machine 2 punches the connecting terminal 1103 to one end of the thermocouple wire 1101, the moving conveying mechanism 7 conveys the thermocouple wire 1101 and the connecting terminal 1103 to the connecting terminal welding device 3, the connecting terminal welding device 3 welds the connecting terminal 1103 and the thermocouple wire 1101, the thermocouple terminal welding mechanism 5 welds the thermocouple terminal 1102 to the other end of the thermocouple wire 1101, the moving conveying mechanism 7 then conveys the thermocouple wire 1101 welded with the connecting terminal 1103 and the thermocouple terminal 1102 to the temporary placing mechanism 10 for placing, the moving conveying mechanism 7 then conveys the thermocouple wire 1101 welded with the connecting terminal 1103 and the thermocouple terminal 1102 to the discharging mechanism 6, and the discharging mechanism 6 controls discharging of the thermocouple wire 1101 welded with the connecting terminal 1103 and the thermocouple terminal 1102.

The terminal machine 2 is a common knowledge in the art and will not be described herein.

Referring to fig. 3 and 4, the thermocouple terminal feeding mechanism 4 is arranged on one side of the thermocouple terminal welding mechanism 5 away from the moving and conveying mechanism 7; the thermocouple terminal feeding mechanism 4 comprises a vibrating disc 41, a feeding channel 42, a material blocking assembly 43 and a conveying assembly 44; the feeding channel 42 is connected with the vibrating disc 41 and extends towards the first mounting table 11, a reinforcing plate 13 is arranged on the lower side of one end, close to the first mounting table 11, of the feeding channel 42, one end of the reinforcing plate 13 is welded or fixed on the first mounting table 11 through bolts, the other end of the reinforcing plate is abutted to the lower side of the feeding channel 42 to support the feeding channel 42, the conveying assembly 44 is mounted on the upper side of one end, close to the first mounting table 11, of the feeding channel 42, the material blocking assembly 43 is mounted on the first mounting table 11 and located at one end, far away from the vibrating disc 41, of the feeding channel 42, and the welding mechanism is mounted on the first mounting table 11 and located on one side, far away from the feeding channel 42, of the material; the vibrating disc 41 is used for arraying the thermocouple terminals 1102 in order and conveying the thermocouple terminals to the material blocking assembly 43 through the feeding channel 42, the material blocking assembly 43 blocks the thermocouple terminals 1102 to be limited so that the thermocouple terminals 1102 cannot easily slide down into the feeding channel 42, and the conveying assembly 44 is used for conveying the thermocouple terminals 1102 to the welding mechanism for welding.

Referring to fig. 3 and 4, the material blocking assembly 43 comprises a material blocking cylinder 432 and a material blocking claw 431; the material blocking cylinder 432 is a Y-shaped pneumatic finger, the lower end of the material blocking cylinder 432 is fixed on the first mounting table 11, and a gas claw of the material blocking cylinder 432 is arranged upwards; the number of the material blocking claws 431 is two, the material blocking claws are in one-to-one correspondence with the gas claws of the material blocking cylinder 432, and the material blocking claws 431 are fixed on the gas claws of the material blocking cylinder 432 through screws; when the thermocouple terminal 1102 needs to be blocked, the material blocking cylinder 432 drives the two material blocking claws 431 to be closed; otherwise, the material blocking cylinder 432 drives the two material blocking claws 431 to turn and separate towards two sides.

The conveying assembly 44 comprises a material clamping cylinder 441, a material clamping claw 442 and a conveying cylinder 443; the conveying cylinder 443 is fixed on the upper side of the feeding channel 42, and a piston rod extends towards the material blocking assembly 43 along the length direction of the feeding channel 42; the material clamping cylinder 441 is fixed on a piston rod of the conveying cylinder 443, clamping jaws of the material clamping cylinder 441 extend towards the material blocking assembly 43, two clamping jaws of the material clamping cylinder 441 are turned over towards two sides in the horizontal direction, the number of the material clamping jaws 442 is two, the two material clamping jaws 442 correspond to the clamping jaws of the material clamping cylinder 441 one by one, and the material clamping jaws 442 are fixed on the clamping jaws of the material clamping cylinder 441 through screws; in operation, the material clamping cylinder 441 drives the material clamping claw 442 to clamp the thermocouple terminal 1102, and then the piston rod of the conveying cylinder 443 extends out to drive the material clamping cylinder 441 to convey the thermocouple terminal 1102 to the welding mechanism.

Referring to fig. 5 and 6, the thermocouple terminal welding mechanism 5 includes a first welding gun 51, a first elevating cylinder 52, a fixing block 53, a fixing plate 54, a first clamping plate 55, and a second clamping plate 56; the first lifting cylinder 52 is fixed on the fixing table 111 on the first mounting table 11, the piston rod is vertically arranged upwards, a fixing block 53 is fixed on the piston rod of the first lifting cylinder 52 through bolts, the fixing block 53 is arranged in an L shape, one side of the fixing block 53 is fixed with the piston rod of the lifting cylinder, a fixing disc 54 is fixed on the other side of the fixing block 53 through two fixing bolts 59, a first clamping plate 55 is welded on one side, away from the fixing block 53, of the fixing disc 54, the second clamping plate 56 is fixed on one side, away from the fixing disc 54, of the first clamping plate 55 through bolts, and the first clamping plate 55 and the second clamping plate 56 are matched to clamp and fix a welding gun arm 511 of the first welding gun 51.

Two arc-shaped holes 541 are formed in the fixed disc 54, the arc-shaped holes 541 are arranged in an arc shape and are concentric with the fixed disc 54, and the fixing bolts 59 are inserted into the arc-shaped holes 541 to slide; when the angle of the first welding gun 51 is adjusted, the fixing bolt 59 is firstly unscrewed, then the fixing disc 54 is rotated to adjust the angle of the first welding gun 51, and after the angle adjustment is completed, the fixing bolt 59 is screwed to compress and fix the fixing disc 54.

Clamping grooves 551 are formed in the first clamping plate 55 and the second clamping plate 56 on one side close to the welding gun arm 511, and welding guns are embedded in the clamping grooves 551, so that the contact area of the first clamping plate 55, the second clamping plate 56 and the welding gun arm 511 is increased, and the first clamping plate 55 and the second clamping plate 56 are more firmly fixed to the first welding gun 51.

Referring to fig. 5 and 7, the thermocouple terminal welding mechanism 5 further includes a thermocouple terminal clamping assembly 57, the thermocouple terminal clamping assembly 57 is disposed on the left side of the first welding gun 51, the thermocouple terminal clamping assembly 57 is used for clamping and fixing the thermocouple terminal 1102, and the thermocouple terminal clamping assembly 57 includes a first clamping cylinder 571 and a first clamping jaw 572; the first clamping cylinder 571 is a Y-shaped pneumatic finger, the lower end of the first clamping cylinder 571 is fixed on the first mounting table 11, the clamping jaws of the first clamping cylinder 571 are arranged upward, the number of the first clamping jaws 572 is two and is in one-to-one correspondence with the clamping jaws of the first clamping cylinder 571, the first clamping jaws 572 are fixed on the clamping jaws of the first clamping cylinder 571 through bolts, clamping grooves 573 are formed in one side of the two first clamping jaws 572, and the clamping grooves 573 are used for embedding the thermocouple terminal 1102 so as to increase the contact area between the thermocouple terminal 1102 and the clamping jaws, so that the thermocouple terminal 1102 is clamped more firmly.

Referring to fig. 5 and 8, thermocouple terminal welding mechanism 5 further includes a thermocouple wire clamping assembly 58, thermocouple wire clamping assembly 58 being provided on the right side of first welding gun 51, thermocouple wire clamping assembly 58 being configured to clamp thermocouple wire 1101, thermocouple wire clamping assembly 58 including clamping cylinder 581 and clamping claw 582; the clamping cylinder 581 is a pneumatic finger, the lower end of the clamping cylinder 581 is fixed on the first mounting table 11, clamping jaws of the clamping cylinder 581 are arranged upwards, the number of the clamping jaws 582 is two, the two clamping jaws correspond to the clamping jaws of the clamping cylinder 581 one by one, and the clamping jaws 582 are fixed on the clamping jaws of the clamping cylinder 581 through bolts.

With reference to fig. 9, the two clamping claws 582 are oppositely arranged, and the clamping claws 582 include a connecting portion 5822 and a clasping portion 5821; connecting portion 5822 passes through the fix with screw on the clamping jaw of pneumatic finger, and connecting portion 5822 is close to the integrative two portions 5821 that hug closely in one side of connecting portion 5822 of another clamping jaw 582, and the portion 5821 that hugs closely of two clamping jaws 582 is mutual dislocation set, and the portion 5823 that hugs closely is seted up on one side of keeping away from connecting portion 5822 and hugs closely the groove 5823, and the cooperation of four portions 5821 of hugging closely hugs thermocouple wire 1101.

Referring to fig. 10, the connecting terminal welding device 3 includes a vertical plate 31, a connecting terminal welding mechanism 32, and a clamping mechanism 33; the clamping mechanism 33 is fixed on the second mounting table 12, the clamping mechanism 33 is used for clamping the thermocouple lead 1101, the connecting terminal 1103 is arranged towards the left welding mechanism, the vertical plate 31 can be fixed on the second mounting table 12 through bolts and can also be welded on the second mounting table 12, the connecting terminal welding mechanism 32 is arranged on the vertical plate 31, and the connecting terminal welding mechanism 32 is used for welding the connecting part of the connecting terminal 1103 and the thermocouple lead 1101.

Referring to fig. 10 and 11, the clamping mechanism 33 includes a second clamping cylinder 331 and a second clamping jaw 332; the second clamping cylinder 331 and the clamping cylinder 581 are identical in structure, and the second clamping claw 332 and the clamping claw 582 are identical in structure.

Referring to fig. 11 and 12, the connection terminal welding mechanism 32 includes a second welding gun 321, a second lifting cylinder 322, a lifting block 323, a fixing plate 324, a solder feeding pipe 325, and a solder conveying system 326; an upper folding plate 311 is fixed at the upper end of the vertical plate 31 through a bolt, the upper folding plate 311 extends towards the clamping mechanism 33, the upper folding plate 311 is perpendicular to the vertical plate 31, a second lifting cylinder 322 is fixed at the upper side of the upper folding plate 311, a piston rod of the second lifting cylinder 322 penetrates through the upper folding plate 311 to vertically extend downwards, a lifting block 323 is fixed on the piston rod of the second lifting cylinder 322, a fixing plate 324 perpendicular to the vertical plate 31 is integrally arranged on the right side of the lifting block 323, and an inserting hole 3241 for inserting and fixing a second welding gun 321 is formed in the fixing plate 324; the solder conveying system 326 is provided on the table 1, and the solder conveying system 326 is used for conveying a solder wire, and the solder wire is conveyed to the lower end of the welding gun through the solder conveying pipe 325.

A slide rail which is vertically arranged is fixed on one side of the vertical plate 31 close to the lifting block 323 through a bolt, and the lifting block 323 is connected to the slide rail in a sliding manner to guide the lifting block 323 to lift.

Clamping plates 327 are fixed on the upper side and the lower side of the fixing plate 324 through bolts, a penetrating groove 3271 for a welding gun to penetrate is formed in each clamping plate 327, and the penetrating groove 3271 is communicated with the right side of each clamping plate 327; the clamp plate 327 is further provided with a pressing plate 328 through bolts, the pressing plate 328 is arranged at an opening of the clamp plate 327, which penetrates through the groove 3271, and the pressing plate 328 cooperates with the clamp plate 327 to clamp and fix the welding gun.

Referring to fig. 11 and 13, the connecting terminal welding device 3 further includes a clamping assembly 9, the clamping assembly 9 is used for clamping and fixing the connecting terminal 1103, and the clamping assembly 9 includes a supporting plate 91, a driving cylinder 92 and a pressing plate 93; the supporting plate 91 is arranged on the right side of the vertical plate 31, the supporting plate 91 can be welded on the vertical plate 31 or fixed on the vertical plate 31 through bolts, and the supporting plate 91 is used for supporting the connecting terminal 1103 so that the connecting terminal 1103 and the thermocouple lead 1101 are not easy to bend downwards during welding; a lower folding plate 312 is integrally provided at the lower end of the vertical plate 31, and the lower folding plate 312 is fixed to the table 1 by screws.

The driving cylinder 92 is fixed on the lower folding plate 312, the driving cylinder 92 is located under the supporting plate 91, a through hole 911 for a piston rod of the driving cylinder 92 to penetrate is formed in the supporting plate 91, the pressing plate 93 is fixed on the piston rod of the driving cylinder 92 through a bolt, the pressing plate 93 is arranged above the supporting plate 91, and the pressing plate 93 is used for pressing and fixing the connecting terminal 1103 on the supporting plate 91 so that the connecting terminal 1103 and the thermocouple lead 1101 are not prone to downward bending when welding.

Referring to fig. 11 and 14, the lifting block 323 is further provided with a fixing assembly 8, the fixing assembly 8 is used for fixing the tin feeding tube 325, and the fixing assembly 8 comprises a first connecting rod 81, a second connecting rod 82, a connecting plate 83 and a clamping block 84; one end ball of the first connecting rod 81 is connected to the lifting block 323 in a ball mode and goes up and down together with the lifting block 323, one end of the second connecting rod 82 is connected with the other end of the first connecting rod 81 in a pin mode through a screw in a pin mode, the other end of the second connecting rod 82 is connected with the connecting plate 83 in a ball mode, the number of the clamping blocks 84 is two, the two clamping blocks 84 are integrally arranged on one side, away from the second connecting rod 82, of the connecting plate 83 and are parallel to each other, the two clamping blocks 84 are integrally arranged at two ends of the connecting plate 83 respectively, and the two clamping blocks 84 are used.

The clamping blocks 84 are further in threaded connection with driving screws 85, the driving screws 85 penetrate through one clamping block 84 and then are in threaded connection with the other clamping block 84, and the driving screws 85 are used for driving the two clamping blocks 84 to clamp the tin delivery pipe 325.

Referring to fig. 15, the moving conveyance mechanism 7 includes a rodless cylinder 71, a third lift cylinder 72, a support rod 73, a gripper cylinder 74, and a gripper jaw 75; the rodless cylinder 71 is fixed to the lower side of the first installation table 11 or the second installation table 12, the third lifting cylinder 72 is fixed to a sliding block of the rodless cylinder 71, piston rods of the third lifting cylinder 72 are vertically arranged upwards, the supporting rod 73 is fixed to a piston rod of the third lifting cylinder 72, the supporting rod 73 is horizontally arranged, the piston rod of the third lifting cylinder 72 is connected to the middle point of the supporting rod 73 in the length direction, the number of the clamping cylinders 74 is three, the clamping cylinders 74 are evenly arranged along the length direction of the supporting rod 73, clamping jaws of the clamping cylinders 74 are vertically arranged upwards, the clamping cylinders 74 are Y-shaped pneumatic fingers, the clamping jaws 75 are fixed to clamping jaws of the clamping cylinders 74 through screws, the clamping jaws 75 are used for clamping thermocouple wires 1101, and the clamping jaws 75 are consistent with the.

The distance between two adjacent clamping cylinders 74 is equal to the distance between the terminal machine 2 and the connecting terminal welding device 3, the distance between the connecting terminal welding device 3 and the temporary placing mechanism 10, the distance between the thermocouple terminal welding mechanism 5 and the temporary placing mechanism 10 and the distance between the temporary placing mechanism 10 and the discharging mechanism 6.

Referring to fig. 2 and 16, the temporary release mechanism 10 includes a temporary release cylinder 101 and a temporary release claw 102; the lower end of the pause cylinder 101 is fixed to the first mount 11 or the second mount 12, the pause cylinder 101 and the clamp cylinder 581 have the same structure, and the pause chuck 102 and the clamp chuck 582 have the same structure.

Referring to fig. 2 and 17, the discharging mechanism 6 comprises a discharging rod 61, a suspension rod 62, a discharging cylinder 63 and a discharging clamping jaw 64; the number of the discharging rods 61 is two, the two discharging rods 61 are both fixed on one side of the workbench 1 far away from the terminal machine 2, and the distance between the two discharging rods 61 is not more than the length of the thermocouple lead 1101; hang pole 62 an organic whole locate the one end that the discharge bar 61 kept away from workstation 1 and output and upwards set up, ejection of compact cylinder 63 is fixed in the upper end that hangs pole 62, and ejection of compact cylinder 63 is the pneumatic finger of Y type, and the vertical downward setting of clamping jaw of ejection of compact cylinder 63, the quantity of ejection of compact clamping jaw 64 be two and through the screw one-to-one be fixed in the clamping jaw of ejection of compact cylinder 63 on, ejection of compact clamping jaw 64 is unanimous with the structure of clamping jaw 582.

The implementation principle of the embodiment is as follows:

referring to fig. 2, initially, two ends of the first thermocouple wire 1101 are respectively clamped on the clamping claws 75 on the right side of the supporting rod 73, at this time, the clamping claws 75 on the right side of the two supporting rods 73 are in the same line with the terminal machine 2, and the terminal machine 2 punches the connecting terminal 1103 to one end of the first thermocouple wire 1101; then, the rodless cylinder 71 drives the supporting rod 73 to move leftwards, the supporting rod 73 drives the clamping claw 75 to convey the first thermocouple wire 1101 stamped with the connecting terminal 1103 to a position between the thermocouple terminal welding mechanism 5 and the connecting terminal welding mechanism 32, two ends of the first thermocouple wire 1101 are respectively placed on the upper sides of the first clamping cylinder 571 and the second clamping cylinder 331, the first clamping cylinder 571 drives the first clamping jaw 572 to clamp one end of the first thermocouple wire 1101, the second clamping cylinder 331 drives the second clamping jaw 332 to clamp the other end of the first thermocouple wire 1101, then, the clamping cylinder 74 drives the clamping claw 75 to open towards two sides, the third lifting cylinder 72 drives the supporting rod 73 to descend, and the rodless cylinder 71 drives the supporting rod 73 to reset; the thermocouple terminal welding mechanism 5 and the connection terminal welding mechanism 32 are respectively welded at two ends of a first thermocouple wire 1101, then the third lifting cylinder 72 drives the support rod 73 to ascend, the clamping jaw 75 at the right side of the support rod 73 clamps a second thermocouple wire 1101, the clamping jaw 75 at the middle of the support rod 73 clamps the first thermocouple wire 1101 welded with the connection terminal 1103 and the thermocouple terminal 1102, the rodless cylinder 71 drives the support rod 73 to move leftwards, two ends of the second thermocouple wire 1101 are respectively placed on the upper sides of the first clamping cylinder 571 and the second clamping cylinder 331, two ends of the first thermocouple wire 1101 are respectively placed on the upper sides of the temporary placing cylinders 101, the temporary placing cylinders 101 drive the temporary placing clamping jaws 102 to clamp two ends of the first thermocouple wire 1101, the first clamping cylinder 571 drives the first clamping jaw 572 to clamp one end of the second thermocouple wire 1101, the second clamping cylinder 331 drives the second clamping jaw 332 to clamp the other end of the second thermocouple wire 1101, then, the clamping cylinder 74 drives the clamping claws 75 to open towards two sides, the third lifting cylinder 72 drives the supporting rod 73 to descend, and the rodless cylinder 71 drives the supporting rod 73 to reset; the thermocouple terminal welding mechanism 5 and the connection terminal welding mechanism 32 are respectively welded at two ends of a second thermocouple wire 1101, then, the third lifting cylinder 72 drives the support rod 73 to ascend, the clamping jaw 75 at the right side of the support rod 73 clamps the third thermocouple wire 1101, the clamping jaw 75 at the middle of the support rod 73 clamps the second thermocouple wire 1101 welded with the connection terminal 1103 and the thermocouple terminal 1102, the clamping jaw 75 at the left side of the support rod 73 clamps the first thermocouple wire 1101 on the temporary holding jaw 102, the temporary holding jaw 102 is opened towards two sides, the first clamping jaw 572 and the second clamping jaw 332 are opened towards two sides, the rodless cylinder 71 drives the support rod 73 to move towards the left, two ends of the third thermocouple wire 1101 are respectively placed at the lower side of the discharging cylinder 63, the second thermocouple wire 1101 is conveyed to the upper end of the temporary holding cylinder 101, the first thermocouple wire 1101 is conveyed to the upper sides of the first clamping cylinder 571 and the second clamping cylinder 331, the discharging clamping jaw 64 clamps two ends of a first thermocouple wire 1101, the temporary placing clamping jaw 102 clamps two ends of a second thermocouple wire 1101, the first clamping jaw 572 and the second clamping jaw 332 are respectively clamped at two ends of the first thermocouple wire 1101, then, the clamping cylinder 74 drives the clamping jaw 75 to open towards two sides, the third lifting cylinder 72 drives the supporting rod 73 to descend, the rodless cylinder 71 drives the supporting rod 73 to reset, and then the discharging clamping jaw 64 opens towards two sides to release the first thermocouple wire 1101 for discharging.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A gas stove thermocouple processing system is characterized by comprising:

a table (1);

the terminal machine (2) is arranged at one end of the workbench (1) and is used for punching a connecting terminal to one end of a thermocouple lead;

a connecting terminal welding device (3) arranged at one end of the workbench (1);

the thermocouple terminal feeding mechanism (4) is arranged at the other end of the workbench (1), is opposite to the connecting terminal welding device (3), and is used for driving the thermocouple terminal to move to the thermocouple terminal welding mechanism (5);

the thermocouple terminal welding mechanism (5) is arranged on one side, close to the thermocouple terminal feeding mechanism (4), of the workbench (1) and is used for welding the thermocouple terminal to the other end of the thermocouple wire;

the temporary placing mechanism (10) is arranged on one side, away from the terminal machine (2), of the connecting terminal welding device (3) on the workbench (1) and clamps and temporarily releases the thermocouple;

the discharging mechanism (6) drives the thermocouple lead, the thermocouple terminal and the connecting terminal to discharge; and

and the two movable conveying mechanisms (7) are arranged on the workbench (1) and are used for conveying the thermocouple wires from the terminal machine (2) to the connecting terminal welding mechanism (32) and the discharging mechanism (6) in sequence.

2. The thermocouple processing system for the gas stove according to claim 1, wherein: the mobile conveyor mechanism (7) comprises:

the rodless cylinder (71) is arranged on the workbench (1) and is arranged horizontally;

the third lifting cylinder (72) is arranged on the sliding block of the rodless cylinder (71), and a piston rod is arranged vertically upwards;

the support rod (73) is arranged on the piston rod of the third lifting cylinder (72) and is horizontally arranged;

the clamping cylinders (74) are three in number, are uniformly arranged on the upper side of the supporting rod (73) and are arranged vertically upwards, the distance between every two adjacent clamping cylinders (74) is equal to the distance between the terminal machine (2) and the connecting terminal welding device (3), the distance between the connecting terminal welding device (3) and the temporary placement mechanism (10), the distance between the thermocouple terminal welding mechanism (5) and the temporary placement mechanism (10) and the distance between the temporary placement mechanism (10) and the discharging mechanism (6); and

and the clamping claw (75) is connected with the clamping cylinder (74) to clamp the thermocouple wire.

3. The thermocouple processing system for the gas stove according to claim 1, wherein: the discharge mechanism (6) comprises:

the discharging rods (61) are arranged on one side, away from the terminal machine (2) and the thermocouple lead blanking device, of the workbench (1), the number of the discharging rods is two, and the distance between the two discharging rods (61) is not more than the length of the thermocouple lead;

the suspension rod (62) is arranged at the upper end of the discharge rod (61);

the discharging cylinder (63) is arranged on the suspension rod (62) and is arranged vertically downwards; and

and the discharging clamping jaw (64) is connected with the discharging cylinder (63) to clamp the thermocouple wire.

4. The thermocouple processing system for the gas stove according to claim 1, wherein: the thermocouple terminal feeding mechanism (4) comprises a vibrating disc (41) arranged on one side of the workbench (1), a feeding channel (42) arranged on the workbench (1) and connected with the vibrating disc (41), a material blocking assembly (43) arranged at one end, far away from the vibrating disc (41), of the feeding channel (42) on the workbench (1), and a conveying assembly (44) arranged on the workbench (1) and arranged on the feeding channel (42) to clamp and convey a thermocouple terminal to the thermocouple terminal welding mechanism (5);

the material blocking assembly (43) comprises:

the two material blocking claws (431) are arranged at one end of the feeding channel (42) far away from the vibrating disc (41); and

the material blocking cylinder (432) is arranged on the workbench (1) and is connected with the material blocking claws to drive the two material blocking claws (431) to open or close;

the delivery assembly (44) comprises:

the material clamping cylinder (441) is arranged right above the feeding channel (42) on the workbench (1);

the clamping claw (442) is connected with the clamping cylinder (441) to clamp the thermocouple terminal; and

and the conveying cylinder (443) is arranged right above the feeding channel (42) on the workbench (1), and the piston rod is connected with the material clamping cylinder (441) so as to drive the material clamping cylinder (441) to move to the thermocouple terminal welding mechanism (5).

5. The thermocouple processing system for the gas stove according to claim 1, wherein: the thermocouple terminal welding mechanism (5) includes:

a first welding gun (51) arranged on the workbench (1) to weld the thermocouple terminal and the thermocouple lead;

the first lifting cylinder (52) is arranged on the workbench (1) to drive the first welding gun (51) to lift;

the fixed block (53) is fixed on a piston rod of the first lifting cylinder (52);

the fixed disc (54) is fixed on the fixed block (53) through two fixed bolts (59);

the first clamping plate (55) is integrally arranged on one side, far away from the fixed block (53), of the fixed disc (54); and

and the second clamping plate (56) is fixed on one side of the first clamping plate (55) far away from the fixed plate (54) through bolts and is matched with the first clamping plate (55) to clamp and fix the first welding gun (51).

6. The thermocouple processing system for the gas stove according to claim 5, wherein: the fixed disk (54) is provided with an arc-shaped hole (541) which is concentric with the fixed disk (54) and through which the fixed bolt (59) can slide.

7. The thermocouple processing system for the gas stove according to claim 5, wherein: clamping grooves (551) are formed in the first clamping plate (55) and the second clamping plate (56) on the sides close to the first welding gun (51).

8. The thermocouple processing system for the gas stove according to claim 1, wherein: the thermocouple terminal welding mechanism (5) further comprises a thermocouple terminal clamping assembly (57) arranged on one side, close to the conveying assembly (44), of a welding gun on the workbench (1) and a thermocouple lead clamping assembly (58) arranged on one side, far away from the conveying assembly (44), of the welding gun on the workbench (1);

the thermocouple terminal clamping assembly (57) comprises a first clamping cylinder (571) arranged on one side, close to the conveying assembly (44), of the welding gun on the workbench (1) and a first clamping jaw (572) connected with the first clamping cylinder (571) to clamp the thermocouple terminal;

the thermocouple lead clamping assembly (58) comprises a clamping cylinder (581) arranged on one side, away from the conveying assembly (44), of the welding gun on the workbench (1) and a clamping claw (582) connected with the clamping cylinder (581) to clamp the thermocouple lead.

9. The thermocouple processing system for the gas stove according to claim 1, wherein: the connecting terminal welding device (3) comprises a vertical plate (31) which is arranged on the workbench (1) and is vertically arranged, a connecting terminal welding mechanism (32) which is arranged on the vertical plate (31), and a clamping mechanism (33) which is arranged on the workbench (1);

the clamping mechanism (33) comprises:

the second clamping cylinder (331) is arranged on the workbench (1);

the second clamping jaw (332) is connected with the second clamping cylinder (331) to clamp and fix the thermocouple lead;

the connection terminal welding mechanism (32) includes:

a second welding gun (321) arranged on the vertical plate (31);

the second lifting cylinder (322) is arranged at the upper end of the vertical plate (31), and the piston rod is connected with the second welding gun (321) to drive the second welding gun (321) to lift;

the lifting block (323) is connected to the piston rod of the second lifting cylinder (322) in a threaded manner;

the fixing plate (324) is integrally arranged on one side, away from the vertical plate (31), of the lifting block (323) and is perpendicular to the vertical plate (31), and an inserting hole (3241) for inserting the second welding gun (321) is formed in the fixing plate (324);

a solder feeding pipe (325) which is arranged on one side of the second welding gun (321) and the pipe orifice of which is arranged towards the head of the second welding gun (321); and

and the soldering tin conveying system (326) is arranged on the workbench (1) and is used for conveying soldering tin wires.

10. The thermocouple processing system for the gas cooker as claimed in claim 9, wherein: the tin soldering machine also comprises a fixing component (8) for fixing the tin feeding pipe (325) and a clamping component (9) for clamping the connecting terminal;

the fixed assembly (8) comprises a first connecting rod (81) hinged to the lifting block (323), a second connecting rod (82) pivoted to one end, far away from the lifting block (323), of the first connecting rod (81), a connecting plate (83) hinged to one end, far away from the first connecting rod (81), of the second connecting rod (82), and two clamping blocks (84) integrally arranged on one side, far away from the second connecting rod (82), of the connecting plate (83) and used for clamping and conveying the tin tubes (325);

the clamping assembly (9) comprises a supporting plate (91) which is arranged on one side of the vertical plate (31) close to the connecting terminal welding mechanism (32) and is vertical to the vertical plate (31), a driving air cylinder (92) which is arranged on the workbench (1) and a pressing plate (93) which is arranged on a piston rod of the driving air cylinder (92) and is higher than the supporting plate (91), wherein a through hole (911) for the piston rod of the driving air cylinder (92) to penetrate is formed in the pressing plate (93).