阅读说明：本技术 一种石英管内壁自动火抛光装置 (Automatic fire polishing device for inner wall of quartz tube ) 是由 耿健 吴然红 苏云飞 何求 杨军 于 2020-11-30 设计创作，主要内容包括：本发明公开了一种石英管内壁自动火抛光装置,包括焊枪,所述焊枪用于对石英管进行抛光作业；焊枪运动控制装置,焊枪运动控制装置用于控制焊枪进行一定角度范围内的圆弧动作,焊枪固定在焊枪运动控制装置上；床身承载平台,在床身承载平台一端设置有用于固定石英管的支撑组件、另一端设置有用于控制焊枪运动控制装置运动的电控柜上位机,焊接运动控制装置设置在床身承载平台上；气站,气站用于控制焊枪自动开关火,气站与焊枪尾部连通设置。本发明提供一种石英管内壁自动火抛光装置,实现石英管内壁自动进行抛光操作,操作简单、节省人力、提高效率；通用性强、便于针对不同口径的石英圆管内壁进行焊接；实现焊枪自动开关火、安全性高。(The invention discloses an automatic fire polishing device for the inner wall of a quartz tube, which comprises a welding gun, wherein the welding gun is used for polishing the quartz tube; the welding gun motion control device is used for controlling the welding gun to perform arc motion within a certain angle range, and the welding gun is fixed on the welding gun motion control device; the welding gun motion control device comprises a lathe bed bearing platform, wherein one end of the lathe bed bearing platform is provided with a supporting component for fixing a quartz tube, the other end of the lathe bed bearing platform is provided with an electric control cabinet upper computer for controlling the motion of the welding gun motion control device, and the welding motion control device is arranged on the lathe bed bearing platform; and the gas station is used for controlling the welding gun to automatically switch on and off the fire, and is communicated with the tail part of the welding gun. The automatic fire polishing device for the inner wall of the quartz tube provided by the invention has the advantages that the automatic polishing operation of the inner wall of the quartz tube is realized, the operation is simple, the labor is saved, and the efficiency is improved; the universality is strong, and the welding is convenient for the inner walls of the quartz round tubes with different calibers; the automatic on-off of the welding gun is realized, and the safety is high.)

1. An automatic fire polishing device for the inner wall of a quartz tube is characterized by comprising,

a welding torch (12), wherein the welding torch (12) is used for polishing the quartz tube (10);

the welding gun motion control device (3), the welding gun motion control device (3) is used for controlling the welding gun to perform arc motion within a certain angle range, and the welding gun (12) is fixed on the welding gun motion control device (3);

the welding machine comprises a machine body bearing platform (1), wherein one end of the machine body bearing platform (1) is provided with a supporting component (5) for fixing a quartz tube (10), the other end of the machine body bearing platform is provided with an electric control cabinet upper computer (2) for controlling a welding gun motion control device (3) to move, and the welding motion control device is arranged on the machine body bearing platform (1);

the gas station (4) is used for controlling the automatic on-off of the welding gun, and the gas station (4) is communicated with the tail of the welding gun (12).

2. The automatic fire polishing device for the inner wall of a quartz tube according to claim 1, wherein the welding torch movement control means (3) comprises,

the welding gun translation device is used for controlling a welding gun (12) to slide in the X-axis direction along the axis of the quartz tube, and the welding gun translation device is connected to the lathe bed bearing platform (1) in a sliding mode;

the welding gun lifting device is used for controlling a welding gun (12) to perform lifting motion in the Z-axis direction, and the welding gun lifting device is installed on the welding gun translation device;

the welding gun feeding device is used for controlling a welding gun (12) to reciprocate in the Y-axis direction and is arranged on the welding gun lifting device;

the welding gun swinging device comprises a welding gun (12) which is used for controlling the welding gun to rotate and swing to form an arc, the welding gun swinging device is arranged on the welding gun feeding device, and the welding gun is fixedly connected with the welding gun swinging device;

the support skeleton, the support skeleton is used for supporting welder motion control device (3), the support skeleton is including translation skeleton (13) that are used for connecting welder translation device and welder elevating gear, be used for connecting welder elevating gear and welder feeding device's lift skeleton (14) and be used for connecting welder feeding device and welder and sway the feeding skeleton (16) of device.

3. The automatic fire polishing device for the inner wall of the quartz tube according to claim 2, wherein the welding gun translation device comprises a sliding screw rod (601) fixed on the bed body bearing platform (1), a sliding nut (603) fixed at the bottom of the translation framework (13) and a screw rod driving motor (605) used for driving the sliding screw rod (601) to rotate, and the sliding nut (603) is sleeved outside the sliding screw rod (601).

4. The automatic fire polishing device for the inner wall of the quartz tube according to claim 3, wherein the welding gun translation device further comprises a guide device, the guide device comprises a translation slide rail (602) and a translation slide block (604) arranged at the bottom of the support framework, and the translation slide block (604) is slidably arranged on the translation slide rail (602).

5. The automatic fire polishing device for the inner wall of a quartz tube according to claim 2, wherein, the welding gun lifting device comprises a gear rack (701) component for controlling lifting and a guide component for guiding, a lifting plate (1401) is arranged on the lifting framework (14), the gear rack (701) component comprises a rack (701) arranged on the translation framework (13) and a motor gear (702) fixed on the lifting plate (1401), the rack (701) is arranged in parallel with the Z-axis direction, the guide assembly comprises a lifting guide rail (703) arranged on the translation framework (13) and a lifting slide block fixed on the lifting plate (1401), the lifting guide rails (703) are arranged in parallel with the rack (701), the lifting guide rails (703) are arranged on two sides of the rack (701) in pairs and symmetrically, and the lifting sliding blocks are connected to the lifting guide rails (703) in a sliding mode.

6. The automatic fire polishing device for the inner wall of the quartz tube as claimed in claim 2, wherein a supporting plate (15) is connected to the upper end of a lifting framework (14), the welding gun feeding device comprises a synchronous pulley transmission device for realizing reciprocating movement of a welding gun in the Y-axis direction and a feeding guide structure for guiding, and the feeding framework (16) is fixedly connected with a synchronous belt (801) transmission device.

7. The automatic fire polishing device for the inner wall of the quartz tube as claimed in claim 6, wherein the synchronous pulley transmission device comprises a synchronous belt (801), synchronous pulleys (802) arranged at two ends of the synchronous belt (801) and a feeding driving motor for controlling the rotation of the synchronous pulleys (802), and the feeding framework (16) is fixed on the synchronous belt (801); the feeding guide structure comprises a feeding slide block (804) which is fixed on a feeding framework (16) through a feeding guide rail (803) fixed on a support plate (15), and the feeding slide block (804) is connected to the feeding framework (16) in a sliding mode.

8. The automatic fire polishing device for the inner wall of the quartz tube as claimed in claim 2, wherein the welding gun swinging device comprises a central shaft (902), a welding gun clamp (903) fixed on the side wall of the central shaft (902) and a swinging motor (901) used for controlling the rotation of the central shaft (902), the central shaft (902) and the swinging motor (901) are both fixed on the upper side of the feeding framework (16), the welding gun clamp (903) is arranged perpendicular to the central shaft (902), and the welding gun (12) is fixed on the welding gun clamp (903).

9. The automatic fire polishing device for the inner wall of the quartz tube according to any one of claims 1 to 8, wherein the gas station (4) comprises an ignition gas path (401), a gas supply gas path and a standby gas path (404), the gas supply gas path comprises a hydrogen supply gas path (403) and an oxygen supply gas path (402), and the ignition gas path (401) and the gas supply gas path are both communicated with the welding gun (12).

10. The automatic fire polishing device for the inner wall of the quartz tube according to claim 9, wherein the gas circuit further comprises a motor for controlling the opening and closing of the gas supply circuit and an electromagnetic valve for controlling the opening and closing of the ignition gas circuit (401), and the motor and the electromagnetic valve are controlled by a PLC.

Technical Field

The invention relates to polishing equipment, in particular to an automatic fire polishing device for the inner wall of a quartz tube.

Background

The quartz glass has the characteristics of low thermal expansion coefficient, good heat resistance, high hardness and the like, so that the processing difficulty is high, the process requirement is strict, and the processing efficiency and the precision are low. Particularly, the fire polishing operation of the large-diameter quartz circular tube is manual operation, and at least more than 2 operators are needed, wherein 1 operator performs the fire polishing operation on the outer wall of the quartz circular tube, 1 operator performs the fire polishing operation on the inner wall of the quartz circular tube, two operators must perform the operation simultaneously, and otherwise, the quartz circular tube is broken. However, the inner wall of the quartz tube is inconvenient to process, and the problems of low processing efficiency, difficult operation and the like exist. Some devices for polishing the inner wall of a quartz tube are commercially available, for example, "a quartz tube inner hole polishing apparatus and a polishing method thereof" disclosed in chinese patent literature, and publication No. CN 109290936A includes a base; the grinding head is arranged at one end of the grinding rod; the grinding rod box is arranged on the base, and the grinding rod is arranged on the grinding rod box; the clamping device is arranged on the base and is used for clamping a quartz tube to be processed on the clamping device; and a feed drive device connected with at least one of the grinding rod box and the clamping device and used for driving the at least one of the grinding rod box and the clamping device to move linearly towards the other; the grinding rod box is provided with a driving device capable of driving the grinding rod and the grinding head to rotate relative to the quartz tube. The device polishes the inner hole of the quartz tube through the grinding head, although the polishing efficiency is high and the rejection rate is low, the precision is low compared with fire polishing, and the device is only suitable for grinding head polishing and not suitable for fire polishing.

Disclosure of Invention

The automatic fire polishing device for the inner wall of the quartz tube is provided for overcoming the problems of inconvenience in processing, low processing efficiency, difficulty in operation and the like of the inner wall of the quartz tube in the prior art, realizes automatic polishing operation of the inner wall of the quartz tube, and is simple to operate, labor-saving and high in efficiency; the universality is strong, and the welding is convenient for the inner walls of the quartz round tubes with different calibers; the automatic on-off of the welding gun is realized, and the safety is high.

In order to achieve the purpose, the invention adopts the following technical scheme:

the automatic fire polishing device for the inner wall of the quartz tube comprises a welding gun, wherein the welding gun is used for polishing the quartz tube; the welding gun motion control device is used for controlling a welding gun to perform arc motion within a certain angle range, and the welding gun is fixed on the welding gun motion control device; the welding device comprises a lathe bed bearing platform, wherein one end of the lathe bed bearing platform is provided with a supporting component for fixing a quartz tube, the other end of the lathe bed bearing platform is provided with an electric control cabinet upper computer for controlling a welding gun motion control device to move, and the welding motion control device is arranged on the lathe bed bearing platform; and the gas station is used for controlling the welding gun to automatically switch on and off the fire, and is communicated with the tail part of the welding gun. According to the technical scheme, the welding gun is used for polishing the inner wall of the quartz tube, the upper computer of the electric control cabinet controls the welding gun motion control device to move, the welding gun is fixed on the welding gun motion control device, the welding gun completes the action track of drawing an arc within a certain angle range through the internal linkage of the welding gun motion control device, so that the fire polishing operation of the inner walls of the quartz tubes with different calibers is completed, the universality is high, the quartz tube is fixed by the supporting component, and the welding gun can conveniently move in the quartz tube to weld the inner wall of the quartz tube; the welding gun is controlled by the upper computer of the electric control cabinet in the whole movement process, so that manual operation is reduced, the control accuracy is higher compared with manual welding, and the guarantee is improved for the fire polishing processing of the inner wall of the large-diameter quartz tube; in addition, the gas station is communicated with the tail of the welding gun, so that the gas station can ventilate the welding gun conveniently, the gas station can automatically control the welding gun to be started or stopped conveniently, the automatic on-off of the welding gun is realized, and the safety is improved.

Preferably, the welding gun motion control device comprises a welding gun translation device, the welding gun translation device is used for controlling the sliding of a welding gun in the X-axis direction along the axis of the quartz tube, and the welding gun translation device is connected to the lathe bed bearing platform in a sliding manner; the welding gun lifting device is used for controlling the welding gun to perform lifting motion in the Z-axis direction and is arranged on the welding gun translation device; the welding gun feeding device is used for controlling the reciprocating movement of a welding gun in the Y-axis direction and is arranged on the welding gun lifting device; the welding gun swinging device comprises a welding gun swinging device, a welding gun feeding device and a welding gun swinging device, wherein the welding gun swinging device is used for controlling the welding gun to rotate and swing to form an arc; the support skeleton, the support skeleton is used for supporting welder motion control device, the support skeleton is including the translation skeleton that is used for connecting welder translation device and welder elevating gear, the lift skeleton that is used for connecting welder elevating gear and welder feeding device and the feeding skeleton that is used for connecting welder feeding device and welder and sways the device. The welding gun motion control device mainly realizes arc motion of a welding gun in a certain angle range, the supporting framework connects all the devices, the devices are mutually linked to drive the welding gun to do arc motion, the welding gun translation device and the welding gun lifting device are connected by the translation framework, the welding gun translation device drives the welding gun lifting device to slide in the X-axis direction, similarly, the lifting framework enables the welding gun lifting device to drive the welding gun feeding device to lift in the Y-axis direction, the welding gun feeding device drives the welding gun swinging device to move in the Z-axis direction by the feeding framework, the welding gun is installed on the welding gun swinging device, therefore, the welding gun translation device drives the welding gun to slide in the axial direction of the quartz tube by the supporting framework, the welding gun lifting device drives the welding gun to do up-and-down motion in the radial direction of the quartz tube by the supporting framework, the welding gun feeding device drives the welding gun to do front-and-down-up- And after the quartz tube moves backwards, the welding gun swinging device is used for driving the welding gun to rotate, so that the angle between the welding gun and the inner wall of the quartz tube is convenient to adjust, and the polishing is more accurate.

Preferably, the welding gun translation device comprises a sliding screw rod fixed on the bed body bearing platform, a sliding nut fixed at the bottom of the translation framework and a screw rod driving motor used for driving the sliding screw rod to rotate, and the sliding nut is sleeved outside the sliding screw rod. The screw rod driving motor controls the sliding screw rod to rotate, so that the sliding nut moves on the sliding screw rod, the translation framework is controlled to slide, and the welding gun is driven to move in the axial direction of the quartz tube.

Preferably, the welding gun translation device further comprises a guide device, the guide device comprises a translation slide rail and a translation slide block arranged at the bottom of the support framework, and the translation slide block is arranged on the translation slide rail in a sliding mode. When the sliding nut rotates along the sliding screw rod, the translation sliding block moves on the translation sliding rail to play a certain guiding role, the phenomenon that the sliding nut and the sliding screw rod are stressed unevenly due to the fact that the translation device deflects is avoided, in addition, the translation sliding block also plays a certain supporting role, and the fact that the whole welding gun moves stably in the X-axis direction is guaranteed.

As preferred, welder elevating gear is provided with the lifter plate including the direction subassembly that is used for controlling the rack subassembly that goes up and down, is used for the direction of direction on the lift skeleton, the rack subassembly is including setting up rack on the translation skeleton and fixing the motor gear on the lifter plate, rack and Z axle direction parallel arrangement, direction subassembly is including setting up the elevator guide on the translation skeleton and fixing the elevator slide on the lifter plate, elevator guide and rack parallel arrangement, elevator guide is in pairs and the symmetry sets up in the rack both sides, elevator slide sliding connection is on elevator guide. The lifting framework is fixed with the motor gear through the lifting plate and moves on the rack along with the movement of the motor gear, and the rack is arranged parallel to the Z axis, so that the lifting framework is lifted on the Z axis to drive the welding gun feeding device and the welding gun swinging device to lift on the Z axis, and further the welding gun is lifted on the Z axis; and the guide assembly is favorable for ensuring that the lifting framework moves stably, so that the welding gun is lifted stably, and the polishing is more accurate.

Preferably, the upper end of the lifting framework is connected with a supporting plate, the welding gun feeding device comprises a synchronous pulley transmission device and a feeding guide structure, the synchronous pulley transmission device is used for realizing reciprocating movement of the welding gun in the Y-axis direction, the feeding guide structure is used for guiding, and the feeding framework is fixedly connected with the synchronous pulley transmission device. The synchronous belt wheel transmission device drives the feeding framework to move on the Y axis and drives the welding gun swinging device to move, so that the welding gun is driven to move on the Y axis, and the feeding guide structure ensures that the feeding fixing motion is stable and the welding gun moves stably.

Preferably, the synchronous pulley transmission device comprises a synchronous belt, synchronous pulleys arranged at two ends of the synchronous belt and a feeding driving motor for controlling the synchronous pulleys to rotate, and the feeding framework is fixed on the synchronous belt; the feeding guide structure comprises a feeding slide block fixed on the feeding framework through a feeding guide rail fixed on the supporting plate, and the feeding slide block is connected to the feeding framework in a sliding mode. Feed driving motor and drive synchronous pulley and rotate and then make the hold-in range remove, and feed the skeleton and fix through feeding guide structure and backup pad to link firmly with the hold-in range, the removal of hold-in range has driven the removal of feeding the skeleton, and feeds guide structure and also can not hinder and feed the skeleton and slide, welder sways the device and takes place to remove at the Z axle under the drive of feeding the skeleton, and then makes welder remove at the Z axle.

Preferably, the welding gun swinging device comprises a middle shaft, a welding gun clamp fixed on the side wall of the middle shaft and a swinging motor used for controlling the middle shaft to rotate, the middle shaft and the swinging motor are both fixed on the upper side of the feeding framework, the welding gun clamp is perpendicular to the middle shaft, and a welding gun is fixed on the welding gun clamp. The swinging motor provides power for swinging of the welding gun, the swinging motor drives the middle shaft to rotate, the welding gun clamp clamps the welding gun to enable the welding gun to swing along with the middle shaft, and arc motion is performed under the linkage action of the welding gun translation device, the welding gun lifting device and the welding gun feeding device, so that polishing of the inner wall of the quartz tube is achieved.

Preferably, the gas station is including igniting the gas circuit, air feed gas circuit and reserve gas circuit, the air feed gas circuit is including hydrogen supply gas circuit and oxygen suppliment gas circuit, ignite the gas circuit and all communicate the setting with the welder with the air feed gas circuit. The gas circuit of igniting, supply hydrogen gas circuit and reserve gas circuit inside be hydrogen, the inside oxygen that is of oxygen suppliment gas circuit, the gas circuit of igniting is used for igniting welder, and the gas suppliment gas circuit is the inside air feed of welder, and wherein supply hydrogen gas circuit provides the hydrogen that is used for the burning, and the oxygen suppliment gas circuit provides and is used for combustion-supporting oxygen, has the calorific value height, zero advantage that pollutes, and the gas station controls opening and close of welder through the control gas circuit, has improved the security.

Preferably, the gas circuit further comprises a motor for controlling the opening and closing of the gas supply gas circuit and an electromagnetic valve for controlling the opening and closing of the ignition gas circuit, and the motor and the electromagnetic valve are controlled by a PLC. The gas supply circuit realizes slow opening and slow closing through motor control, when the welding gun is started, the hydrogen supply circuit is firstly opened, and the oxygen supply circuit is started in a delayed manner; when the welding gun is closed, the hydrogen supply gas circuit and the oxygen supply gas circuit are closed simultaneously, and the ignition gas circuit is in a normally open state. The PLC control operation is convenient and fast, the control is timely, and the delay opening and closing of the motor and the electromagnetic valve are controlled favorably.

Therefore, the invention has the following beneficial effects:

(1) the automatic polishing operation of the inner wall of the quartz tube is realized, the operation is simple, the labor is saved, and the efficiency is improved;

(2) the universality is strong, and the welding is convenient for the inner walls of the quartz round tubes with different calibers;

(3) the welding gun motion control device realizes that the welding gun draws an arc motion track within a certain angle range, and the motion is stable, so that the polishing is more accurate;

(4) the gas station realizes automatic fire switching of the welding gun and has high safety.

Drawings

FIG. 1 is a schematic structural view of an automatic fire polishing apparatus for an inner wall of a quartz tube according to the present invention;

FIG. 2 is a schematic view showing the construction of an automatic fire polishing apparatus (without a gas station) for the inner wall of a quartz tube;

FIG. 3 is a schematic view of the structure of the welding gun motion control device;

FIG. 4 is a schematic view of the gas station;

in the figure: 1. the welding gun motion control device comprises a lathe bed bearing platform 2, an electric control cabinet upper computer 3, a welding gun motion control device 4, a gas station 401, an ignition gas circuit 402, an oxygen supply gas circuit 403, a hydrogen supply gas circuit 404, a standby gas circuit 5, a support assembly 501, a positioning table 5011, a positioning flange 502, a V-shaped support block 601, a sliding screw rod 602, a sliding slide rail 603, a sliding nut 604, a sliding slider 605, a screw rod driving motor 701, a rack 702, a motor gear 703, a lifting guide rail 801, a synchronous belt 802, a synchronous belt pulley 803, a feeding guide rail 804, a feeding slider 901, a swinging motor 902, a middle shaft 903, a welding gun clamp 10, a quartz tube 11, a silicone tube 12, a welding gun 13, a translation framework 14, a lifting framework 1401, a lifting plate.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings.

Example 1:

in embodiment 1 shown in fig. 1, an automatic fire polishing device for an inner wall of a quartz tube includes a welding gun 12, a welding gun motion control device 3, a bed bearing platform 1 and a gas station 4, wherein the welding gun 12 is used for polishing the quartz tube 10, the welding gun motion control device 3 is used for controlling the welding gun to perform arc motion within a certain angle range, the welding motion control device is arranged on the bed bearing platform 1, the welding gun 12 is fixed on the welding gun motion control device 3, and the gas station 4 is used for controlling the welding gun to automatically switch on and off fire.

As shown in fig. 2, one end of the bed bearing platform 1 is provided with a supporting component 5 for fixing the quartz tube 10, the other end of the bed bearing platform is provided with an upper computer 2 of an electric control cabinet for controlling the movement of the welding gun movement control device 3, the supporting component 5 comprises a positioning table 501 fixed on the bed bearing platform 1 and a V-shaped supporting block 502 placed on the positioning table 501, the quartz tube 10 is placed on the V-shaped supporting block 502, positioning flanges 5011 are arranged on two sides of the positioning table 501, the width of the V-shaped supporting block 502 is equal to the distance between the paired positioning flanges 5011, so that the positioning flanges can limit the V-shaped supporting block conveniently, and further the position of the axis of the quartz tube 10 is controlled to ensure the polishing accuracy. In order to better support the quartz tube 10, at least two V-shaped supporting blocks 502 are arranged, the distance between the V-shaped supporting blocks 502 can be freely adjusted in a sliding mode according to the length of the quartz round tube, and the universality is high.

As shown in fig. 3, the welding motion control device is arranged between the support component 5 and the upper computer 2 of the electronic control cabinet, the welding gun motion control device 3 comprises a welding gun translation device for controlling the sliding of the welding gun 12 in the X-axis direction along the axis of the quartz tube 10, a welding gun lifting device for controlling the lifting motion of the welding gun in the Z-axis direction, a welding gun feeding device for controlling the reciprocating motion of the welding gun in the Y-axis direction, a welding gun swinging device for controlling the rotation and swinging of the welding gun to form an arc, and a support framework for supporting the welding gun motion control device 3, wherein the support framework comprises a translation framework 13 for connecting the welding gun translation device and the welding gun lifting device, a lifting framework 14 for connecting the welding gun lifting device and the welding gun feeding device, and a feeding framework 16 for connecting the welding gun feeding device.

The welding gun translation device comprises a sliding screw rod 601 fixed on the lathe bed bearing platform 1, a sliding nut 603 fixed at the bottom of the translation framework 13, a screw rod driving motor 605 for driving the sliding screw rod 601 to rotate and a guiding device, wherein the sliding nut 603 is sleeved outside the sliding screw rod 601, the guiding device comprises a translation sliding rail 602 and a translation sliding block 604 arranged at the bottom of the support framework, and the translation sliding block 604 is arranged on the translation sliding rail 602 in a sliding manner. In order to facilitate the installation of the sliding screw rod 601 and the sliding rail 602, the middle part of the bed bearing platform 1 is hollowed.

The welding gun lifting device comprises a gear rack 701 component for controlling lifting, a guiding component for guiding, a lifting plate 1401 is arranged on a lifting framework 14, the gear rack 701 component comprises a rack 701 arranged on a translation framework 13 and a motor gear 702 fixed on the lifting plate 1401, the motor gear 702 comprises a lifting driving motor and a lifting gear arranged on the lifting driving motor, the rack 701 is arranged in parallel with the Z-axis direction, the guiding component comprises a lifting guide rail 703 arranged on the translation framework 13 and a lifting slider fixed on the lifting plate 1401, the lifting guide rail 703 is arranged in parallel with the rack 701, the lifting guide rails 703 are arranged on two sides of the rack 701 in pairs and are symmetrically connected to the lifting guide rail 703 in a sliding manner.

The welding gun feeding device comprises a synchronous pulley transmission device and a feeding guide structure, the synchronous pulley transmission device is used for realizing reciprocating movement of a welding gun in the Y-axis direction, the synchronous pulley transmission device comprises a synchronous belt 801, synchronous pulleys 802 arranged at two ends of the synchronous belt 801 and a feeding driving motor used for controlling the synchronous pulleys 802 to rotate, and the feeding framework 16 is fixed on the synchronous belt; the upper end of the lifting framework 14 is connected with a supporting plate 15, the feeding guide structure comprises a feeding slide block 804 fixedly connected to the supporting plate 15 and fixedly connected to the feeding framework 16 through a feeding guide rail 803, and the feeding slide block 804 is slidably connected to the feeding framework 16.

The welding gun swinging device comprises a middle shaft 902, a welding gun clamp 903 fixed on the side wall of the middle shaft 902 and a swinging motor 901 used for controlling the middle shaft 902 to rotate, wherein the middle shaft 902 and the swinging motor 901 are both fixed on the upper side of the feeding framework 16, the welding gun clamp 903 is perpendicular to the middle shaft 902, and a welding gun is fixed on the welding gun clamp 903. The welding gun clamp 903 is arranged in pairs, the welding gun clamp 903 is made of high-purity graphite, the clamping position of the welding gun on the middle shaft 902 can be flexibly adjusted according to the length of a quartz round tube, the high-purity graphite cannot pollute the quartz welding gun, and the welding gun clamp 903 arranged in pairs is favorable for improving the stability of the quartz welding gun.

As shown in fig. 4, the gas station 4 includes an output gas circuit and a control switch for controlling the opening and closing of the output gas circuit, the output gas circuit includes a pilot gas circuit 401, a gas supply gas circuit, a standby gas circuit 404, the control switch is a motor for controlling the opening and closing of the gas supply gas circuit and a solenoid valve for controlling the opening and closing of the pilot gas circuit 401, the gas supply gas circuit includes a hydrogen supply gas circuit 403 and an oxygen supply gas circuit 402, the pilot gas circuit 401 and the gas supply gas circuit are communicated with the welding gun through a silicone tube 11, and the motor and the solenoid valve are. The gas circuit 401 of igniting, the hydrogen supply gas circuit 403 and the spare gas circuit 404 are both hydrogen, the oxygen supply gas circuit 402 is inside to be oxygen, the gas circuit 401 of igniting is used for igniting the welder, and the gas supply gas circuit is the inside air feed of welder, wherein the hydrogen supply gas circuit 403 provides the hydrogen that is used for the burning, the oxygen supply gas circuit 402 provides the oxygen that is used for combustion-supporting, have the calorific value height, the advantage of zero pollution, and gas station 4 controls opening and close of welder through the control gas circuit, the security has been improved.

In addition, in order to facilitate the control of the welding gun motion control device 3 by the upper computer 2 of the electric control cabinet, the screw rod driving motor 605, the lifting driving motor, the feeding driving motor and the swinging motor 901 are all electrically connected with the upper computer 2 of the electric control cabinet.

In the technical scheme, the welding gun is used for polishing the inner wall of the quartz tube 10, the upper computer 2 of the electronic control cabinet controls the welding gun motion control device 3 to move, the welding gun is fixed on the welding gun motion control device 3, the welding gun completes the action track of drawing an arc within a certain angle range through the internal linkage of the welding gun motion control device 3, so that the fire polishing operation of the inner walls of the quartz tubes 10 with different calibers is completed, the universality is high, the support component 5 fixes the quartz tube 10, and the welding gun can conveniently move inside the quartz tube 10 to weld the inner wall of the quartz tube 10; all control through automatically controlled cabinet host computer 2 in the whole motion process of welder, reduced manual operation, and compare in manual welding, its control accuracy is higher, improves the guarantee for the 10 inner walls fire-polishing of heavy-calibre quartz capsule processing. The welding gun translation device is arranged between the support component 5 and the upper computer 2 of the electric control cabinet, the bottom of the welding gun translation device is respectively matched with a sliding screw rod and a translation sliding rail 602 through a sliding nut 603 and a translation sliding block 604, and a screw rod driving motor provides driving force so as to move back and forth along the axial direction of a quartz circular tube, namely the X-axis direction, the welding gun lifting device is arranged on the translation framework 13, the side surface of the welding gun translation device is matched with a lifting guide rail 703 through a lifting sliding block, a lifting driving motor is fixed on a lifting plate 1401, a lifting gear is matched with a rack 701 on the support; the welding gun feeding device is connected with the welding gun lifting device through a lifting framework 14, a feeding driving motor drives a synchronous belt pulley 802 to rotate so as to enable a synchronous belt 801 to move, a feeding framework 16 is fixed with a supporting plate 15 through a feeding guide structure and is fixedly connected with the synchronous belt 801, the movement of the synchronous belt 801 drives the movement of the feeding framework 16, and the welding gun swinging device is driven by the feeding framework 16 to move on a Z axis so as to enable a welding gun to move on the Z axis; the swinging driving motor is arranged at the upper end of the feeding framework 16 and drives the shaft end of a central shaft 902 of the welding gun swinging device, the welding gun clamp 903 clamps the welding gun to enable the welding gun to swing along with the central shaft 902 and to perform arc motion under the linkage action of the welding gun translation device, the welding gun lifting device and the welding gun feeding device, and polishing of the inner wall of the quartz tube 10 is achieved. In addition, the gas station 4 is communicated with the tail part of the welding gun through a silicone tube 11, so that the gas station 4 can conveniently ventilate the welding gun, wherein the gas supply gas circuit realizes slow opening and slow closing through motor control, when the welding gun is started, the hydrogen supply gas circuit 403 is firstly opened, and the oxygen supply gas circuit 402 is opened in a delayed manner; when the welding gun is closed, the hydrogen supply gas circuit 403 and the oxygen supply gas circuit 402 are closed at the same time, and the ignition gas circuit 401 is in a normally open state. The PLC control operation is convenient and fast, the control is timely, and the delay opening and closing of the motor and the electromagnetic valve are controlled favorably.

Example 2:

the embodiment 2 is basically the same as the embodiment 1, except that: the welding gun translation device, the welding gun lifting device and the welding gun feeding device can adopt other transmission structures, for example, the welding gun translation device can also adopt belt transmission, gear transmission, chain transmission and the like; the welding gun lifting device can be in screw rod transmission, chain transmission or belt transmission; the welding gun feeding device can be a transmission structure such as a screw rod transmission structure.

Example 3:

example 3 is an operation of an automatic fire polishing apparatus for an inner wall of a quartz tube: firstly, an operator powers on an upper computer 2 of the electric control cabinet, inputs the inner and outer diameter sizes and the pipe length data of the quartz circular pipe in an operation system, sets the swing angle and speed, sets the feeding speed of a welding gun, and simultaneously, the system automatically sets the limit according to the length of the quartz pipe; secondly, an operator checks whether the quartz welding gun is clamped by the welding gun clamp 903 and cannot be loosened, holds an igniter to ignite the welding gun, checks whether the automatic switching function of the welding gun of the gas station 4 is normal, and starts an automatic fire polishing program after confirmation; finally, the equipment automatically completes the fire polishing procedure and then anneals the original point.

It should be noted that as used in the foregoing description, the terms "front," "back," "left," "right," "upper" and "lower" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

The above examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.