Automatic fire polishing equipment and polishing method for inner wall and outer wall of tubular part

Abstract

The invention relates to the technical field of quartz tube fire polishing, in particular to automatic fire polishing equipment for the inner wall and the outer wall of a tubular part and a polishing method. The inner polishing spray gun device is movably arranged on the rack; the outer polishing spray gun device is movably arranged on the rack; the connecting piece is connected with the inner polishing spray gun device and the outer polishing spray gun device and used for enabling the inner polishing spray gun device and the outer polishing spray gun device to move synchronously. The rotating mechanism is arranged corresponding to the inner polishing spray gun device and is used for bearing the tubular part and driving the tubular part to rotate; the first moving mechanism is arranged on the rack and connected with the inner polishing spray gun device or the outer polishing spray gun device; and the air supply device is communicated with the inner polishing spray gun device and the outer polishing spray gun device. The polishing equipment aims at solving the problem that in the prior art, outer wall polishing needs manual assistance, the automation degree of the polishing equipment is improved, the working intensity of workers is reduced, and the fire polishing stability of products is improved.

Description

Technical Field

[0001] The invention relates to the technical field of quartz tube fire polishing, and more specifically to an automatic fire polishing device and a polishing method for inner and outer walls of a tubular part. Background Art

[0002] In order to make the surface of quartz products transparent after machining, the current technology uses flame fine firing to fire-polish the surface of quartz products. However, the fire-polishing work of some large-diameter quartz round tubes is mostly done manually, and at least two people are required to work together, one of whom fire-polishes the outer wall of the quartz round tube, and one fire-polishes the inner wall of the quartz round tube. The two people must work at the same time to ensure that the inner and outer fine firing spray guns are in roughly the same position, otherwise the quartz round tube will rupture due to stress concentration. The operation is difficult and the processing environment is harsh and the temperature is high. In order to realize the automatic fire polishing and fine firing of the inner and outer walls of quartz tube products, some automated equipment has appeared in the prior art to realize this. For example, Chinese patent application number: CN202011379979.X proposes an automatic fire polishing device for the inner wall of a quartz tube. By controlling the forward and backward movement of the spray gun and coordinating the swing of the spray gun to imitate the manual fine firing movements of humans, the automatic fire polishing of the inner wall of the quartz tube can be realized. However, this technology can only realize the fire polishing of the inner wall of the quartz tube. The outer wall needs to be manually held with a spray gun to follow the internal spray gun for fine firing at the same time. The employees who perform the fine firing of the outer wall have high requirements, and they need to move with the internal spray gun at all times. After a certain area is fire polished, the quartz tube needs to be manually rotated a certain angle and then started again to perform the fire polishing operation of the remaining area. Summary of the invention

[0003] The main purpose of the present invention is to propose an automatic fire polishing device and polishing method for the inner and outer walls of a tubular part. The polishing device is intended to solve the problem in the prior art that outer wall polishing requires manual assistance, improve the degree of automation of the polishing equipment, reduce the workload of employees, and improve the stability of product fire polishing.

[0004] In order to solve the above technical problems, on the one hand, an automatic fire polishing device for inner and outer walls of a tubular member is proposed, comprising: a frame; An internal polishing spray gun device is movably arranged on the frame and is used for fire polishing the inner side surface of the tubular member; An external polishing spray gun device is movably arranged on the frame and is used for fire polishing the outer side surface of the tubular member; A connecting member, connected to the inner polishing spray gun device and the outer polishing spray gun device, respectively, for making the inner polishing spray gun device and the outer polishing spray gun device move synchronously; A rotating mechanism, arranged corresponding to the inner polishing spray gun device, for carrying the tubular member and driving the tubular member to rotate; A first moving mechanism, disposed on the frame, connected to the inner polishing spray gun device or the outer polishing spray gun device, and used to drive the inner polishing spray gun device and the outer polishing spray gun device to approach or move away from the rotating mechanism; The gas supply device is connected with the inner polishing spray gun device and the outer polishing spray gun device, and is used for respectively delivering the gas required for combustion to the inner polishing spray gun device and the outer polishing spray gun device.

[0005] In any of the above technical solutions, further comprising: A second moving mechanism, disposed on the first moving mechanism, the first moving mechanism being used to drive the second moving mechanism to move along a first direction; A third moving mechanism, disposed on the second moving mechanism, the second moving mechanism being used to drive the third moving mechanism to move along a second direction; The inner polishing spray gun device is arranged on the third moving mechanism, and the third moving mechanism is used to drive the inner polishing spray gun device to move along the third direction; The first direction, the second direction and the third direction are arranged perpendicular to each other.

[0006] In any of the above technical solutions, further comprising: A connecting seat, movably disposed on the frame along the first direction; A support seat, movably disposed on the connecting seat along the third direction; An angle adjustment component is slidably arranged on the support seat along the second direction, and the external polishing spray gun device is arranged on the angle adjustment component. The angle adjustment component is used to adjust the direction of the external polishing spray gun device.

[0007] In any of the above technical solutions, further comprising: A preheating spray gun device, arranged on a side of the inner polishing spray gun device away from the outer polishing spray gun device, for preheating the tubular member; The preheating spray gun device is fixedly connected to the inner polishing spray gun device or the outer polishing spray gun device, and the preheating spray gun device is communicated with the gas supply device, and the gas supply device is used to transport the gas required for combustion to the preheating spray gun device.

[0008] In any of the above technical solutions, further comprising: A loading and unloading device is arranged corresponding to the rotating mechanism; The transfer table is arranged corresponding to the loading and unloading device and is used to carry the tubular member. The loading and unloading device is used to drive the tubular member to move between the transfer table and the rotating mechanism.

[0009] In any of the above technical solutions, further comprising: A first fixing seat; A first supporting roller, fixedly disposed on the first fixing seat; a rotating roller rotatably disposed on the first supporting roller, the rotating roller being used to extend to the inner side of the tubular member and to squeeze the inner side wall of the tubular member; The temperature control mechanism is connected to the rotating roller and is used to adjust the temperature of the rotating roller.

[0010] In any of the above technical solutions, further, the temperature control mechanism includes: The electric heating wire is arranged in the rotating roller, and both ends of the electric heating wire extend to the outside of the rotating roller; A first annular brush, coaxially fixedly disposed on the rotating roller and electrically connected to one end of the heating wire; A second annular brush is fixedly disposed on the rotating roller and electrically connected to the other end of the heating wire; The first wiring member and the second wiring member are both fixedly disposed on the first fixing seat and are electrically connected to the first annular brush and the second annular brush respectively.

[0011] In any of the above technical solutions, further comprising: A second fixing seat, correspondingly arranged at the lower side of the first fixing seat; A second supporting roller, fixedly disposed on the second fixing seat; A positioning roller is rotatably arranged on the second supporting roller, and the positioning roller is used to extend to the inner side of the tubular member and squeeze the inner side wall of the tubular member.

[0012] In any of the above technical solutions, further comprising: a fourth moving mechanism, wherein the first fixing seat is arranged on the fourth moving mechanism, and the fourth moving mechanism is used for driving the first fixing seat to move up and down; a fifth moving mechanism, wherein the second fixing seat is arranged on the fifth moving mechanism, and the fifth moving mechanism is used for driving the second fixing seat to move up and down; The sixth moving mechanism, the fourth moving mechanism and the fifth moving mechanism are arranged on the sixth moving mechanism, and the sixth moving mechanism is used to drive the fourth moving mechanism and the fifth moving mechanism to approach or move away from the rotating mechanism.

[0013] On the other hand, a method for automatic fire polishing of inner and outer walls of a tubular part is proposed, which is applied to the automatic fire polishing device for inner and outer walls of a tubular part described in any of the above technical solutions, comprising the following steps: S1. placing the tubular member on the rotating mechanism; S2, adjusting the positions of the first fixed seat and the second fixed seat so that the rotating roller and the positioning roller extend to the far end of the tubular member, and both the rotating roller and the positioning roller abut against the inner wall of the tubular member, with the rotating roller on the upper side and the positioning roller on the lower side; S3, adjusting the outer polishing spray gun device and the inner polishing spray gun device to the positions corresponding to the tubular member, turning on the air supply device, igniting the outer polishing spray gun device and the inner polishing spray gun device, heating the outer wall temperature of the tubular member to (P-100) to (P+300) by the outer polishing spray gun device, heating the inner wall temperature of the tubular member to (P+200) to (P+600) by the inner polishing spray gun device, turning on the temperature control mechanism to adjust the surface temperature of the rotating roller to 600°C to 1000°C, where P is the softening point temperature of the tubular member, and P is greater than 1000°C; S4, turning on the rotating mechanism to drive the tubular member to rotate, and making the area of ​​the inner side wall of the tubular member corresponding to the inner polishing spray gun device contact the rotating roller after being fire-polished by the inner polishing spray gun device; S5. After the fire polishing of the inner and outer side walls of the tubular part is completed, the outer polishing spray gun device, the rotating roller and the positioning roller are withdrawn, and finally the tubular part is removed from the rotating mechanism.

[0014] The beneficial effects are: 1. The polishing equipment of the present invention connects the inner polishing spray gun device and the outer polishing spray gun device through a connecting piece, so that the two are driven by the first moving mechanism to move synchronously, and cooperate with the action of the rotating mechanism, so that the inner polishing spray gun device and the outer polishing spray gun device can be superimposed on the rotating action of the tubular member driven by the rotating mechanism during the movement of the inner and outer sides of the tubular member, and the inner and outer sides of the tubular member are synchronously fire-polished in a spiral motion process, thereby avoiding the problem of asynchronous fire polishing of the inner and outer sides, improving the uniformity of the inner and outer fire polishing, and stabilizing the quality of fire polishing.

[0015] 2. The polishing equipment of the present invention can automatically adjust the distance and corresponding position between the inner polishing spray gun device and the inner wall of the tubular part through the cooperation of the first moving mechanism, the second moving mechanism and the third moving mechanism, so as to automatically adjust the size of the area on the inner wall that is subjected to flame baking; similarly, through the setting of the connecting seat, the supporting seat and the angle adjustment assembly, the distance and corresponding position between the outer polishing spray gun device and the outer wall of the tubular part can be adjusted, and the size of the area on the outer wall that is subjected to flame baking can be adjusted, so as to control the length of time that the same position on the tubular part is flame-polished in the flame zone, so as to facilitate the various places of the inner and outer walls of the tubular part to be subjected to flame polishing at a predetermined temperature and for a predetermined length of time.

[0016] 3. The polishing equipment of the present invention is provided with a rotating roller so that the fire-polished area of ​​the inner wall of the tubular part can be squeezed and flattened by the rotating roller after fire polishing, thereby reducing the impact of the unevenness problem caused by the micro-flow of the inner wall after the inner wall is softened by high temperature; at the same time, a temperature control mechanism is provided to control the temperature of the rotating roller, so that the rotating roller is kept at a certain temperature, and as the tubular part rotates, the inner wall surface of the tubular part is suddenly cooled by a certain temperature difference at the moment when the rotating roller is squeezed and contacted with the fire-polished area, thereby achieving the effect of surface solidification, reducing the grinding thickness and grinding difficulty required for the subsequent fire polishing.

[0017] 4. By setting the first annular brush and the second annular brush of the temperature control mechanism, the temperature control mechanism can avoid hindering the rotation of the rotating roller, ensure the rolling friction state between the rotating roller and the inner wall of the tubular member, and reduce the impact on the inner wall of the tubular member.

[0018] 5. The polishing equipment of the present invention is provided with positioning rollers so that the positioning rollers press the tubular member downward behind the rotating mechanism, thereby ensuring the stability of the position of the tubular member during the processing and facilitating the enhancement of the acting force between the rotating rollers and the tubular member.

[0019] 6. The polishing equipment of the present invention can adjust the distance between the rotating roller and the positioning roller through the arrangement of the fourth to sixth moving mechanisms, so as to facilitate loading and unloading of tubular parts and control the pressure between the rotating roller and the tubular parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 2. It is a schematic diagram of a three-dimensional structure from a front side view of an automatic fire polishing device for inner and outer walls of a tubular member according to an embodiment of the present invention; Figure 2 2. It is a schematic diagram of the three-dimensional structure from a rear side view of the automatic fire polishing device for inner and outer walls of a tubular member according to an embodiment of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the rotating mechanism in the automatic fire polishing equipment for the inner and outer walls of a tubular member according to an embodiment of the present invention Figure 4 It is a three-dimensional structural schematic diagram of a spray gun device and a moving mechanism in an automatic fire polishing device for inner and outer walls of a tubular member according to an embodiment of the present invention; Figure 5 yes Figure 4 A schematic diagram of the local enlarged structure at point A in the middle; Figure 6 yes Figure 4 A schematic diagram of the local enlarged structure at B in the middle; Figure 7 yes Figure 4 A schematic diagram of the local enlarged structure at C in the middle; Figure 8 It is a partial structural schematic diagram of the rotating roller and the positioning roller in the automatic fire polishing device for the inner and outer walls of a tubular member according to an embodiment of the present invention when they are in contact with the tubular member; Fig. 9 It is a three-dimensional structural schematic diagram of a temperature control mechanism in the automatic fire polishing equipment for inner and outer walls of a tubular component according to an embodiment of the present invention.

[0022] The following are the descriptions of the reference numerals: 1. Rack; 101. first guide rail; 102. second guide rail; 2. Internal polishing spray gun device; 201. Internal polishing spray gun head; 202. Internal polishing spray gun inner tube; 203. Internal polishing spray gun outer tube; 204. Internal polishing fixed pressing block; 205. Internal polishing fixed base; 3. External polishing spray gun device; 301. External polishing spray gun head; 302. External polishing spray gun tube; 303. External polishing spray gun pressing block; 304. External polishing spray gun base; 4. Connectors; 5. Rotating mechanism; 501. Mounting frame; 502. Bottom plate; 503. Rotating servo motor; 504. Linkage assembly; 505. Limiting assembly; 506. Transmission shaft; 507. Graphite roller; 6. The first moving mechanism; 7. Air supply device; 8. The second moving mechanism; 9. The third moving mechanism; 10. Connecting seat; 11. Support seat; 12. Angle adjustment assembly; 1201. Worm gear box; 1202. Angle adjustment hand wheel; 13. Preheating spray gun device; 14. Loading and unloading device; 15. Relay station; 16. First fixing seat; 17. A first supporting roller; 18. Rotating roller; 19. Temperature control mechanism; 1901. Heating wire; 1902. First annular brush; 1903. Second annular brush; 1904. First connecting piece; 1905. Second connecting piece; 20. Second fixing seat; 21. A second supporting roller; 22. Positioning roller; 23. Fourth moving mechanism; 24. The fifth moving mechanism; 25. The sixth moving mechanism. DETAILED DESCRIPTION

[0023] Below, the example embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the example embodiments described herein. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that, as shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not specifically refer to the singular, but may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements.

[0025] If the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] The following embodiments are used to describe in detail an automatic fire polishing device for inner and outer walls of a tubular component of the present application.

[0029] In this embodiment, if Figures 1 to 6 As shown, the automatic fire polishing equipment for inner and outer walls of a tubular member comprises: a frame 1; An internal polishing spray gun device 2 is movably arranged on the frame 1 and is used for fire polishing the inner side surface of the tubular member; An external polishing spray gun device 3 is movably arranged on the frame 1 and is used for fire polishing the outer side surface of the tubular member; A connecting member 4 is connected to the inner polishing spray gun device 2 and the outer polishing spray gun device 3 respectively, and is used to make the inner polishing spray gun device 2 and the outer polishing spray gun device 3 move synchronously; The rotating mechanism 5 is provided corresponding to the internal polishing spray gun device 2 and is used to carry the tubular member and drive the tubular member to rotate; The first moving mechanism 6 is disposed on the frame 1 and connected to the inner polishing spray gun device 2 or the outer polishing spray gun device 3, and is used to drive the inner polishing spray gun device 2 and the outer polishing spray gun device 3 to approach or move away from the rotating mechanism 5; The gas supply device 7 is connected to the inner polishing spray gun device 2 and the outer polishing spray gun device 3, and is used for supplying the gas required for combustion to the inner polishing spray gun device 2 and the outer polishing spray gun device 3 respectively.

[0030] In the present technical solution, the frame 1 is horizontally arranged in the left and right directions, the rotating mechanism 5 is arranged in the middle of the left part of the frame 1 in the front and rear directions, the first moving mechanism 6 is arranged on the frame 1 in the left and right directions and is arranged on the right side of the rotating mechanism 5, the inner polishing spray gun device 2 is fixedly arranged on the first moving mechanism 6, and the outer polishing spray gun device 3 is slidably arranged on the first guide rail 101 on the front side of the rotating mechanism 5 in the left and right directions. The connecting member 4 is a connecting rod, and the right end of the connecting member 4 is connected to the inner polishing spray gun device 2 through a floating joint, and the left end of the connecting member 4 is fixedly connected to the outer polishing spray gun device 3, so that when the first moving mechanism 6 drives the inner polishing spray gun device 2 left and right, the outer polishing spray gun device 3 can follow the movement, and the floating joint is set to reduce the installation accuracy requirements. The gas supply device 7 is connected to the inner polishing spray gun device 2 and the outer polishing spray gun device 3 through pipelines respectively, so as to supply the pilot gas and the combustion gas to the inner polishing spray gun device 2 and the outer polishing spray gun device 3 respectively.

[0031] like Figures 4 to 6 As shown, the internal polishing spray gun device 2 includes: an internal polishing spray gun head 201, an internal polishing spray gun inner tube 202, an internal polishing spray gun outer tube 203, an internal polishing fixed pressing block 204, and an internal polishing fixed base 205. The internal polishing fixed base 205 is arranged on the first moving mechanism 6 through the second moving mechanism 8 and the third moving mechanism 9, the internal polishing fixed pressing block 204 is fixed on the internal polishing fixed base 205, the internal polishing spray gun outer tube 203 is fixed between the internal polishing fixed pressing block 204 and the internal polishing fixed base 205, the internal polishing spray gun inner coaxial tube sleeve is arranged in the middle of the internal polishing spray gun outer tube 203, one end of the internal polishing spray gun inner tube 202 extends to the internal polishing fixed base 205 and is connected to the gas supply device 7 through a hose, and the internal polishing spray gun head 201 is fixed on the other end of the internal polishing spray gun inner tube 202, the internal polishing spray gun inner tube 202 is provided with two pipelines for respectively conveying hydrogen and oxygen, the internal polishing spray gun head 201 is provided with pipe parts respectively connected with the two pipelines, and the internal polishing spray gun head 201 is provided with three nozzles with mixing chambers. The hydrogen and oxygen sprayed from the internal polishing spray gun head 201 are ignited to perform fire polishing on the inner side wall of the tubular member.

[0032] like Figure 1 and Figure 6As shown, the external polishing spray gun device 3 includes: an external polishing spray gun head 301, an external polishing spray gun tube 302, an external polishing spray gun block 303 and an external polishing spray gun base 304. The external polishing spray gun base 304 is slidably arranged on the frame 1 in the left and right directions through the angle adjustment component 12, the support seat 11 and the connecting seat 10, the external polishing spray gun block 303 is fixed on the external polishing spray gun base 304, the external polishing spray gun tube 302 is fixed between the external polishing spray gun base 304 and the external polishing spray gun block 303, the right end of the external polishing spray gun tube 302 is connected to the air supply device 7 through a hose, the external polishing spray gun head 301 is fixed to the left end of the external polishing spray gun tube 302, the structure of the external polishing spray gun tube 302 is similar to that of the inner tube 202 of the internal polishing spray gun, and the structure of the external polishing spray gun head 301 is similar to that of the inner polishing spray gun head 201.

[0033] like Figure 3 As shown, the rotating mechanism 5 includes: a mounting frame 501, a bottom plate 502, a rotating servo motor 503, a linkage assembly 504, a stop assembly 505, two transmission shafts 506 and a plurality of graphite rollers 507. The bottom plate 502 is fixed to the upper side of the mounting frame 501, a fireproof layer is provided between the lower side of the bottom plate 502 and the mounting frame 501, and a plurality of through holes are provided on the bottom plate 502 to avoid the graphite rollers 507. The rotating servo motor 503 is fixed to the lower side of the bottom plate 502, two transmission shafts 506 are symmetrically arranged on the lower side of the bottom plate 502 along the front-back direction, a plurality of graphite rollers 507 are symmetrically arranged on the two transmission shafts 506, the linkage assembly 504 is arranged between the rotating servo motor 503 and the transmission shaft 506, and the stop assembly 505 is slidably arranged on the upper side of the bottom plate 502 along the left-right direction. When in use, the tubular member is placed between the graphite rollers 507 on both sides, and the rotary servo motor 503 is turned on to drive the tubular member to rotate clockwise in the direction of the right viewing angle.

[0034] The gas supply device 7 can deliver various gases to each spray gun device through separate gas paths, and the gas paths delivered to each spray gun device are equipped with separate pilot gas flow regulating valves, hydrogen flow regulating valves, and oxygen flow regulating valves, so that the flow rates of various gases delivered to each spray gun device can be adjusted separately, thereby facilitating the control of the flame size of each spray gun device. At the same time, the gas supply device 7 is equipped with a pressure gauge to detect the pressure of the hydrogen gas path and the oxygen gas path in real time to keep the flame stable.

[0035] In some technical solutions, casters are provided on the frame 1 to facilitate adjustment of the position of the polishing device. A limit switch is provided on the frame 1 to limit the moving distance of the first moving mechanism 6. The linkage assembly 504 is a sprocket chain assembly. The limit assembly 505 is provided with a slidable limit base and a limit roller, and the limit roller is freely rotatable along the rotation axis in the vertical direction on the limit base to limit the left end of the tubular member on the rotating mechanism 5.

[0036] In another technical solution, the polishing device is further provided with an electric control device to control the rotation speed of the rotating mechanism 5 and the movement speed of the first moving mechanism 6 to control the time length that the side wall of the tubular member passes through the flame zone.

[0037] In this embodiment, if Figure 1 , Figure 2 and Figure 5 As shown, it also includes: The second moving mechanism 8 is arranged on the first moving mechanism 6, and the first moving mechanism 6 is used to drive the second moving mechanism 8 to move along the first direction; The third moving mechanism 9 is arranged on the second moving mechanism 8, and the second moving mechanism 8 is used to drive the third moving mechanism 9 to move along the second direction; The inner polishing spray gun device 2 is arranged on the third moving mechanism 9, and the third moving mechanism 9 is used to drive the inner polishing spray gun device 2 to move along the third direction; The first direction, the second direction and the third direction are arranged perpendicular to each other.

[0038] In the present technical solution, the first moving mechanism 6 is a screw slider mechanism driven by a motor, the second moving mechanism 8 and the third moving mechanism 9 are both gear rack mechanisms driven by a motor, the second moving mechanism 8 is vertically arranged on the slider of the first moving mechanism 6, the third moving mechanism 9 is horizontally arranged on the sliding structure of the second moving mechanism 8 in the front-to-back direction, and the internal polishing fixed base 205 is fixed on the sliding structure of the third moving mechanism 9. With the driving of the first moving mechanism 6, the second moving mechanism 8, the third moving mechanism 9 and the internal polishing spray gun device 2 can be driven to move left and right; with the driving of the second moving mechanism 8, the position of the third moving mechanism 9 and the internal polishing spray gun device 2 in the up-down direction can be adjusted; with the driving of the third moving mechanism 9, the position of the internal polishing spray gun device 2 in the front-to-back direction can be adjusted. This is to achieve the position adjustment and distance adjustment of the inner side wall of the tubular member corresponding to the internal polishing spray gun device 2.

[0039] In this embodiment, if Figure 1 , Figure 4 and Figure 6 As shown, it also includes: The connecting seat 10 is movably disposed on the frame 1 along a first direction; The support base 11 is movably disposed on the connecting base 10 along the third direction; The angle adjustment component 12 is slidably disposed on the support seat 11 along the second direction. The external polishing spray gun device 3 is disposed on the angle adjustment component 12 . The angle adjustment component 12 is used to adjust the direction of the external polishing spray gun device 3 .

[0040] In the present technical solution, a first guide rail 101 is provided on the front side of the frame 1 horizontally arranged in the left and right directions. The connecting seat 10 is a hand-cranked slide arranged horizontally in the front and rear directions. The connecting seat 10 is slidably arranged on the first guide rail 101 on the front side of the frame 1 in the left and right directions. The right side of the connecting seat 10 is fixedly connected to the slider of the first moving mechanism 6 or the fixed structure of the second moving mechanism 8 through the connecting member 4. As the first moving mechanism 6 is driven, the connecting seat 10 can be synchronously driven to slide left and right.

[0041] The support seat 11 is two support rods vertically arranged on the slide of the connecting seat 10. As the connecting seat 10 is manually shaken, the slide can be driven to move horizontally in the front and rear directions, and the support seat 11 can be driven to move forward and backward.

[0042] The angle adjustment component 12 can be slidably and fixedly arranged on two fixed rods in the up and down directions. The angle adjustment component 12 includes: a worm gear box 1201 and an angle adjustment hand wheel 1202. The worm gear box 1201 can be slidably and fixedly arranged on the support seat 11 in the up and down directions. The angle adjustment hand wheel 1202 is coaxially fixed with the worm, and the external spray gun fixed base is coaxially fixed with the gear. With the rotation of the angle adjustment hand wheel 1202, the pitch angle of the external polishing spray gun device 3 can be adjusted.

[0043] In this embodiment, it also includes: A preheating spray gun device 13 is arranged on a side of the inner polishing spray gun device 2 away from the outer polishing spray gun device 3 and is used for preheating the tubular member; The preheating spray gun device 13 is fixedly connected to the inner polishing spray gun device 2 or the outer polishing spray gun device 3 , and the preheating spray gun device 13 is connected to the gas supply device 7 , and the gas supply device 7 is used to transport the gas required for combustion to the preheating spray gun device 13 .

[0044] In the technical solution, a second guide rail 102 is provided at the rear side of the frame 1 for the preheating spray gun device 13 to slide left and right, and a connecting rod with the same structure as the connecting member 4 is also provided between the preheating spray gun device 13 and the slider of the first moving mechanism 6, so that the preheating spray gun device 13 can synchronously move left and right with the inner polishing spray gun device 2 and the outer polishing spray gun device 3. The structure of the preheating spray gun device 13 is the same as that of the outer polishing spray gun device 3, and they are symmetrically arranged front and back.

[0045] In some technical solutions, a connection structure with the same structure as the connecting seat 10, the supporting seat 11 and the angle adjustment assembly 12 is provided between the preheating spray gun device 13 and the second guide rail 102 on the rear side, so that the height, front and rear position and pitch angle of the preheating spray gun device 13 can be adjusted.

[0046] In this embodiment, it also includes: The loading and unloading device 14 is arranged corresponding to the rotating mechanism 5; The transfer table 15 is provided corresponding to the loading and unloading device 14 and is used for carrying the tubular member. The loading and unloading device 14 is used for driving the tubular member to move between the transfer table 15 and the rotating mechanism 5 .

[0047] In this technical solution, the turntable 15 is horizontally arranged at the rear side of the rotating mechanism 5 in the front-to-back direction, and the tubular parts that need to be hot-polished or have been hot-polished can be placed on the turntable 15 for easy loading and unloading. The loading and unloading device 14 is a mechanical arm that can clamp the tubular parts and drive the tubular parts to move. The loading and unloading device 14 can be purchased on the market. This arrangement is convenient for improving the automation of the polishing equipment.

[0048] like Figure 1 , Figure 2 , Figure 4 , Figures 7 to 9 As shown, in this embodiment, it also includes: A first fixing seat 16; A first supporting roller 17, fixedly disposed on the first fixing seat 16; A rotating roller 18 is rotatably disposed on the first supporting roller 17, and the rotating roller 18 is used to extend to the inner side of the tubular member and squeeze the inner side wall of the tubular member; The temperature control mechanism 19 is connected to the rotating roller 18 and is used to adjust the temperature of the rotating roller 18 .

[0049] In the present technical solution, the first fixed seat 16 is arranged on the upper side of the inner polishing spray gun device 2 through the fourth moving mechanism 23 and the sixth moving structure, the first support roller 17 is fixedly arranged on the first fixed seat 16, the left end of the first support roller 17 extends to the left, the rotating roller 18 is straight-cylindrical, coaxially rotatably sleeved on the outside of the first support roller 17, and the outer side surface of the rotating roller 18 is tangentially arranged with the entire inner side surface of the tubular member in the axial direction, so that the rotating roller 18 exerts equal pressure on each point of the inner wall of the tubular member. The temperature control mechanism 19 is connected to the rotating roller 18, and the temperature of the rotating roller 18 is regulated by the temperature control mechanism 19, so that the inner wall of the tubular member after the flame zone polishing can achieve a short-term quenching effect when it contacts the rotating roller 18, thereby improving the curing speed of the inner wall surface, and at the same time, under the extrusion of the rotating roller 18, the inner wall softened by fire polishing can be flattened as a whole, reducing the difficulty of continuing processing after fire polishing.

[0050] The length of the rotating roller 18 is greater than or equal to the depth of the tubular member, so that the outer wall of the rotating roller 18 can be tangent to the entire inner side surface of the tubular member. There is no need to move the position of the rotating roller 18 during the entire fire polishing process, thereby ensuring the quality of the overall processing.

[0051] In some technical solutions, the rotating roller 18 and the first supporting roller 17 are arranged near the flame zone of the inner polishing spray gun device 2 to reduce the rotation angle and time of the fire-polished area moving to the rotating roller 18.

[0052] In some other technical solutions, at least two of the first supporting roller 17, the rotating roller 18 and the temperature control mechanism 19 are provided.

[0053] In this embodiment, if Figure 7 and Fig. 9 As shown, the temperature control mechanism 19 includes: The heating wire 1901 is disposed in the rotating roller 18, and both ends thereof extend to the outside of the rotating roller 18; The first annular brush 1902 is coaxially fixed to the rotating roller 18 and electrically connected to one end of the heating wire 1901; The second annular brush 1903 is fixedly mounted on the rotating roller 18 and electrically connected to the other end of the heating wire 1901; The first wiring member 1904 and the second wiring member 1905 are both fixedly disposed on the first fixing seat 16 and are electrically connected to the first annular brush 1902 and the second annular brush 1903 respectively.

[0054] In the technical solution, the heating wire 1901 is in the shape of a bow or a wall, is evenly buried in the rotating roller 18, and is insulated from the rotating roller 18. Both ends of the heating wire 1901 extend rightward to the right side of the rotating roller 18. The first annular brush 1902 and the second annular brush 1903 are coaxially and staggeredly fixed on the right side of the rotating roller 18, and the first wiring member 1904 and the second wiring member 1905 are fixed on the first fixing seat 16, and the first wiring member 1904 and the second wiring member 1905 are slidably connected to the first annular brush 1902 and the second annular brush 1903, respectively. When in use, an external power source is connected through the first wiring member 1904 and the second wiring member 1905, and power is transmitted through the sliding connection between the first wiring member 1904 and the first annular brush 1902 and the sliding connection between the second wiring member 1905 and the second annular brush 1903, so that the rotating roller 18 and the tubular member can roll relative to each other, avoiding or reducing the possibility of sliding friction between the rotating roller 18 and the tubular member.

[0055] In this embodiment, if Figure 8 As shown, it also includes: The second fixing seat 20 is correspondingly disposed at the lower side of the first fixing seat 16; The second supporting roller 21 is fixedly disposed on the second fixing seat 20; The positioning roller 22 is rotatably disposed on the second supporting roller 21 , and the positioning roller 22 is used to extend to the inner side of the tubular member and squeeze the inner side wall of the tubular member.

[0056] In the present technical solution, the second fixed seat 20 is arranged at the lower side of the inner polishing spray gun device 2 through the fifth moving mechanism 24 and the sixth moving mechanism, the second support roller 21 is fixedly arranged on the second fixed seat 20, the left end of the second support roller 21 extends to the left, the positioning roller 22 is a straight cylinder, coaxially rotatably sleeved on the outside of the second support roller 21, and the outer side surface of the positioning roller 22 is tangential to the entire inner side surface of the tubular member in the axial direction, so that the positioning roller 22 exerts equal pressure on each point of the inner wall of the tubular member. The tubular member is fixed on the rotating mechanism 5 by the positioning roller 22, which is convenient for increasing the extrusion force of the rotating roller 18 on the tubular member within a certain range.

[0057] In some technical solutions, the second fixing seat 20 and the positioning roller 22 are also provided with a temperature control mechanism 19 to control the surface temperature of the positioning roller 22 .

[0058] In this embodiment, it also includes: A fourth moving mechanism 23, the first fixed seat 16 is disposed on the fourth moving mechanism 23, and the fourth moving mechanism 23 is used to drive the first fixed seat 16 to move up and down; A fifth moving mechanism 24, the second fixed seat 20 is disposed on the fifth moving mechanism 24, and the fifth moving mechanism 24 is used to drive the second fixed seat 20 to move up and down; The sixth moving mechanism 25 , the fourth moving mechanism 23 and the fifth moving mechanism 24 are arranged on the sixth moving mechanism 25 , and the sixth moving mechanism 25 is used to drive the fourth moving mechanism 23 and the fifth moving mechanism 24 to approach or move away from the rotating mechanism 5 .

[0059] In the present technical solution, the fourth moving mechanism 23, the fifth moving mechanism 24 and the sixth moving mechanism 25 are all motor-driven screw slider moving mechanisms, the fourth moving mechanism 23 and the fifth moving mechanism 24 are both vertically arranged on the slider of the sixth moving mechanism 25, and the sixth moving mechanism 25 is horizontally arranged on the rear side of the rotating mechanism 5. The sixth moving mechanism 25 can drive the fourth moving mechanism 23, the fifth moving mechanism 24, the rotating roller 18, the positioning roller 22 and other structures to move left and right, the fourth moving mechanism 23 can adjust the height of the first fixed seat 16 and the structure thereon, and the fifth moving mechanism 24 can adjust the height of the second fixed seat 20 and the structure thereon.

[0060] The embodiment of the present invention further provides a method for automatic fire polishing of inner and outer walls of a tubular component, which is applied to the automatic fire polishing equipment for inner and outer walls of a tubular component of the aforementioned embodiment.

[0061] In this embodiment, the method for automatic fire polishing of the inner and outer walls of the tubular member comprises the following steps: S1, placing the tubular member on the rotating mechanism 5; S2, adjusting the positions of the first fixed seat 16 and the second fixed seat 20, so that the rotating roller 18 and the positioning roller 22 extend to the far end of the tubular member, and both the rotating roller 18 and the positioning roller 22 abut against the inner wall of the tubular member, with the rotating roller 18 on the upper side and the positioning roller 22 on the lower side; S3, adjusting the outer polishing spray gun device 3 and the inner polishing spray gun device 2 to the positions corresponding to the tubular member, turning on the gas supply device 7, igniting the outer polishing spray gun device 3 and the inner polishing spray gun device 2, heating the outer wall temperature of the tubular member to (P-100) to (P+300) through the outer polishing spray gun device 3, heating the inner wall temperature of the tubular member to (P+200) to (P+600) through the inner polishing spray gun device 2, turning on the temperature control mechanism 19 to adjust the surface temperature of the rotating roller 18 to 600°C to 1000°C, where P is the softening point temperature of the tubular member, and P is greater than 1000°C; S4, turning on the rotating mechanism 5 to drive the tubular member to rotate, and making the area of ​​the inner side wall of the tubular member corresponding to the inner polishing spray gun device 2 contact with the rotating roller 18 after being fire-polished by the inner polishing spray gun device 2; S5, after the fire polishing of the inner and outer side walls of the tubular component is completed, the outer polishing spray gun device 3, the rotating roller 18 and the positioning roller 22 are withdrawn, and finally the tubular component is removed from the rotating mechanism 5.

[0062] In the present technical solution, the tubular member is a quartz tube, which does not have a fixed softening point. Generally speaking, the softening point temperature is in the range of 1400°C to 1800°C.

[0063] In some embodiments, the temperature of the outer wall of the tubular member is heated to 1300° C. to 1700° C. by the outer polishing lance device 3 , and the temperature of the inner wall of the tubular member is heated to 1600° C. to 2000° C. by the inner polishing lance device 2 .

[0064] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An automatic fire polishing device for inner and outer walls of tubular parts, characterized in that: include: Rack (1); An internal polishing spray gun device (2) is movably arranged on the frame (1) and is used for performing fire polishing on the inner side surface of the tubular member; An external polishing spray gun device (3) is movably arranged on the frame (1) and is used for fire polishing the outer side surface of the tubular member; A connecting member (4) connected to the inner polishing spray gun device (2) and the outer polishing spray gun device (3) respectively, and used to enable the inner polishing spray gun device (2) and the outer polishing spray gun device (3) to move synchronously; A rotating mechanism (5), arranged corresponding to the inner polishing spray gun device (2), used for carrying the tubular member and driving the tubular member to rotate; A first moving mechanism (6), arranged on the frame (1), connected to the inner polishing spray gun device (2) or the outer polishing spray gun device (3), and used for driving the inner polishing spray gun device (2) and the outer polishing spray gun device (3) to move closer to or away from the rotating mechanism (5); The gas supply device (7) is connected to the inner polishing spray gun device (2) and the outer polishing spray gun device (3) and is used to supply the gas required for combustion to the inner polishing spray gun device (2) and the outer polishing spray gun device (3) respectively.

2. The automatic fire polishing equipment for inner and outer walls of tubular parts according to claim 1, characterized in that: Also includes: A second moving mechanism (8) is arranged on the first moving mechanism (6), and the first moving mechanism (6) is used to drive the second moving mechanism (8) to move along a first direction; A third moving mechanism (9) is arranged on the second moving mechanism (8), and the second moving mechanism (8) is used to drive the third moving mechanism (9) to move along a second direction; The internal polishing spray gun device (2) is arranged on the third moving mechanism (9), and the third moving mechanism (9) is used to drive the internal polishing spray gun device (2) to move along a third direction; The first direction, the second direction and the third direction are arranged perpendicular to each other.

3. The automatic fire polishing equipment for inner and outer walls of tubular parts according to claim 2, characterized in that: Also includes: A connecting seat (10) movably arranged on the frame (1) along the first direction; A support seat (11) is movably arranged on the connecting seat (10) along the third direction; An angle adjustment component (12) is slidably arranged on the support seat (11) along the second direction, and the external polishing spray gun device (3) is arranged on the angle adjustment component (12). The angle adjustment component (12) is used to adjust the direction of the external polishing spray gun device (3).

4. The automatic fire polishing equipment for inner and outer walls of tubular parts according to claim 1 or 2, characterized in that: Also includes: A preheating spray gun device (13), arranged on a side of the inner polishing spray gun device (2) away from the outer polishing spray gun device (3), and used for preheating the tubular member; The preheating spray gun device (13) is fixedly connected to the internal polishing spray gun device (2) or the external polishing spray gun device (3), and the preheating spray gun device (13) is connected to the gas supply device (7), and the gas supply device (7) is used to transport the gas required for combustion to the preheating spray gun device (13).

5. The automatic fire polishing equipment for inner and outer walls of tubular parts according to claim 1, characterized in that: Also includes: A loading and unloading device (14) is arranged corresponding to the rotating mechanism (5); The transfer table (15) is arranged corresponding to the loading and unloading device (14) and is used to carry the tubular member. The loading and unloading device (14) is used to drive the tubular member to move between the transfer table (15) and the rotating mechanism (5).

6. The automatic fire polishing equipment for inner and outer walls of tubular parts according to claim 1, characterized in that: Also includes: A first fixing seat (16); A first supporting roller (17) is fixedly mounted on the first fixing seat (16); a rotating roller (18) rotatably disposed on the first supporting roller (17), the rotating roller (18) being used to extend to the inner side of the tubular member and to squeeze the inner side wall of the tubular member; A temperature control mechanism (19) is connected to the rotating roller (18) and is used to adjust the temperature of the rotating roller (18).

7. The automatic fire polishing equipment for inner and outer walls of tubular parts according to claim 6, characterized in that: The temperature control mechanism (19) comprises: The electric heating wire (1901) is arranged in the rotating roller (18), and both ends of the electric heating wire extend to the outside of the rotating roller (18); A first annular brush (1902) is coaxially fixedly disposed on the rotating roller (18) and is electrically connected to one end of the heating wire (1901); A second annular brush (1903) is fixedly mounted on the rotating roller (18) and is electrically connected to the other end of the heating wire (1901); The first wiring member (1904) and the second wiring member (1905) are both fixedly disposed on the first fixing seat (16) and are electrically connected to the first annular brush (1902) and the second annular brush (1903) respectively.

8. The automatic fire polishing equipment for inner and outer walls of tubular parts according to claim 6 or 7, characterized in that: Also includes: A second fixing seat (20) is correspondingly arranged at the lower side of the first fixing seat (16); A second supporting roller (21), fixedly disposed on the second fixing seat (20); A positioning roller (22) is rotatably arranged on the second supporting roller (21), and the positioning roller (22) is used to extend to the inner side of the tubular member and squeeze the inner side wall of the tubular member.

9. The automatic fire polishing equipment for inner and outer walls of tubular parts according to claim 8, characterized in that: Also includes: a fourth moving mechanism (23), wherein the first fixed seat (16) is arranged on the fourth moving mechanism (23), and the fourth moving mechanism (23) is used to drive the first fixed seat (16) to move up and down; a fifth moving mechanism (24), wherein the second fixed seat (20) is arranged on the fifth moving mechanism (24), and the fifth moving mechanism (24) is used for driving the second fixed seat (20) to move up and down; A sixth moving mechanism (25), wherein the fourth moving mechanism (23) and the fifth moving mechanism (24) are arranged on the sixth moving mechanism (25), and the sixth moving mechanism (25) is used to drive the fourth moving mechanism (23) and the fifth moving mechanism (24) to approach or move away from the rotating mechanism (5).

10. A method for automatic fire polishing of inner and outer walls of a tubular part, applied to the automatic fire polishing device for inner and outer walls of a tubular part according to claim 1, characterized in that: The following steps are involved: S1, placing the tubular member on the rotating mechanism (5); S2, adjusting the positions of the first fixed seat (16) and the second fixed seat (20) so that the rotating roller (18) and the positioning roller (22) extend to the far end of the tubular member, and both the rotating roller (18) and the positioning roller (22) abut against the inner wall of the tubular member, with the rotating roller (18) on top and the positioning roller (22) on the bottom; S3, adjusting the outer polishing spray gun device (3) and the inner polishing spray gun device (2) to the positions corresponding to the tubular member, turning on the air supply device (7), igniting the outer polishing spray gun device (3) and the inner polishing spray gun device (2), heating the outer wall temperature of the tubular member to (P-100) to (P+300) by the outer polishing spray gun device (3), and heating the inner wall temperature of the tubular member to (P+200) to (P+600) by the inner polishing spray gun device (2), turning on the temperature control mechanism (19) to adjust the surface temperature of the rotating roller (18) to 600°C to 1000°C, where P is the softening point temperature of the tubular member, and P is greater than 1000°C; S4, turning on the rotating mechanism (5) to drive the tubular member to rotate, and making the area of ​​the inner wall of the tubular member corresponding to the inner polishing spray gun device (2) contact the rotating roller (18) after being fire-polished by the inner polishing spray gun device (2); S5. After the fire polishing of the inner and outer side walls of the tubular member is completed, the outer polishing spray gun device (3), the rotating roller (18) and the positioning roller (22) are withdrawn, and finally the tubular member is removed from the rotating mechanism (5).

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