Automatic welding machine for tent support

Abstract

The invention belongs to the technical field of welding, and discloses a tent support automatic welding machine which comprises a base and a fixing seat fixed to the top of the base, a rotating cylinder is rotatably mounted in the fixing seat, and a clamping sleeve is slidably mounted in the rotating cylinder. Pressure air in the rotating main shaft is input through the air supply assembly, the air supply assembly is matched with the composite treatment assembly rotationally installed on the rotating main shaft, and the composite treatment assembly is located between the ends of the two sets of pipelines before welding, so that when the motor is started, simultaneous rotation of the pipelines and the grinding disc is achieved, and different rotating directions are matched; the front ends of the two sets of pipelines before welding are subjected to intermittent polishing treatment, polishing power equipment does not need to be additionally arranged, a motor and a rotating main shaft for achieving rotating welding are matched, bidirectional rotating polishing treatment can be achieved, polishing intermittent action is achieved, overheating deformation of the ends of the pipelines caused by continuous contact polishing is avoided, and the actual polishing treatment effect is good; power equipment investment is low, and the using effect is good.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and in particular relates to an automatic welding machine for a tent support. Background Art

[0002] The tent bracket is a key component of the main structure of the tent. It is responsible for supporting the frame of the entire tent and ensuring the stability and shape of the tent. The welding process of the tent bracket is usually performed on the pipes in the tent bracket after docking.

[0003] The automatic welding machine for tent stands in the prior art often needs to grind the ends of the pipes to be welded during use to maintain the flatness of the ends of the pipes and improve the stability and quality of subsequent welding. However, during the grinding and subsequent rotational welding processes, multiple sets of power equipment are often required to realize the rotation of the pipes to be welded on the one hand, and to provide power processing for the grinding part on the other hand, and to perform rotation processing after grinding. The actual structure is complex, the investment in power equipment is large, and the grinding of the ends is often continuous contact grinding. For pipes with smaller thickness, the continuous rotational grinding of the ends is likely to cause overheating of the ends, thereby causing deformation of the ends, which in turn affects the quality of subsequent welding, and the actual use effect is not good.

[0004] In addition, the automatic welding machine for tent stands in the prior art needs to perform secondary grinding on the outside of the pipe after welding due to the presence of a large amount of welding slag and protrusions on the weld seam on the outside of the pipe. However, the current secondary grinding still requires further replacement of the grinding components, which makes the structure of the entire welding machine complex and increases the number of power equipment. In addition, the grinding contact area for the grinding of the outer welding point of the circular tube is currently limited and the grinding quality is poor. Summary of the invention

[0005] The object of the present invention is to provide an automatic welding machine for a tent support to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic welding machine for a tent support, comprising a base and a fixed base fixed on the top of the base, a rotating cylinder rotatably installed inside the fixed base, a clamping sleeve slidably installed inside the rotating cylinder, a control component is provided on the outside of the clamping sleeve, the control component controls the clamping sleeve to clamp and fix the pipeline to be welded through pressurized air, and controls the clamping sleeve to move laterally, an air supply component is fixed on the top of the base, an air outlet end of the air supply component is connected with the inside of the fixed base, a rotating main shaft is provided on the back of the fixed base, a driving gear is sleeved on the outer surface of the rotating main shaft, a composite processing component is rotatably sleeved on the outer surface of the rotating main shaft, the driving gear drives the rotating cylinder to rotate, the composite processing component grinds the end of the pipeline to be welded when rotating, and grinds the outer side of the pipeline to be welded when fixed, and a welding end is fixed on the top of the fixed base;

[0007] The composite processing assembly includes a movable tube rotatably sleeved on a rotating main shaft, an electric push rod fixedly mounted on the outer side of the movable tube, a grinding disc fixed on the free end of the electric push rod, and a side disc fixedly sleeved on the outer side of the movable tube.

[0008] Preferably, an internal cavity is opened inside the fixing seat, a motor is fixedly installed on the back of the fixing seat, the output shaft of the motor is fixedly connected to the rotating main shaft and drives the rotating main shaft to rotate, the rotating cylinder includes a cylinder body and a driven gear, the driven gear is fixedly sleeved on the outer surface of the cylinder body and meshed with the driving gear, the number of the fixing seats is two and they are symmetrically distributed on the top of the base, the cylinder body corresponds to the fixing seats one by one and is rotatably sleeved inside the fixing seats, a sliding groove is opened on the inner wall of the cylinder body, and a guide tube is fixedly connected in the internal cavity.

[0009] Preferably, the clamping sleeve includes a clamping sleeve, an inner groove, a through hole and a clamping part No. 1, the clamping sleeve is movably sleeved in the cylinder body, the inner groove is opened inside the clamping sleeve and is distributed around with equal intervals, the through hole is opened on the outer side surface of the clamping sleeve and corresponds to the inner groove one by one, and the inner groove and the through hole are connected, the clamping part No. 1 is elastically sleeved in the inner groove, the clamping part No. 1 includes a clamping plate 1 and a spring 1, one end of the spring 1 is fixedly connected to the clamping plate 1, and the other end is fixed in the inner groove, the outer side surface of the clamping sleeve is fixedly connected with a slide plate, and the slide plate is slidably sleeved in the slide groove.

[0010] Preferably, the control component includes a distribution ring, an annular groove, an auxiliary air pump, an auxiliary air pipe, a pull rod and a return spring. The distribution ring is movably sleeved on the outer surface of the clamping cylinder, the annular groove is arranged inside the distribution ring and is connected with the through hole, the auxiliary air pump is fixed on the top of the fixed seat, one end of the auxiliary air pipe is fixedly connected and communicated with the air outlet end of the auxiliary air pump, the other end of the auxiliary air pipe is fixedly connected to the distribution ring and is communicated with the annular groove, one end of the pull rod is fixedly connected to the distribution ring, the other end of the pull rod is movably sleeved in the fixed seat and extends into the internal cavity, the inner end of the pull rod is provided with a piston sleeve, one end of the return spring is fixed in the internal cavity, and the other end is fixedly connected to the piston sleeve, and the piston sleeve is movably sleeved with the guide tube.

[0011] Preferably, the air supply assembly includes a main air pump, a connecting sleeve, a valve No. 1, a valve No. 2 and an intermediate pipe. The connecting sleeve is fixed and connected to the air outlet end of the main air pump. The valve No. 1 is fixedly sleeved in the connecting sleeve. The valve No. 2 is connected to the valve No. 1 through the intermediate pipe. The two ends of the connecting sleeve are fixedly connected to two fixed seats and are connected to the guide pipe.

[0012] Preferably, the rotating main shaft includes a shaft body, a connecting cavity, an assembly groove, a side opening and a second clamping part, the shaft body is fixedly sleeved with the driving gear, the connecting cavity is opened at the end of the shaft body and extends to the inside, the assembly groove is opened on the outer surface of the shaft body, the side opening is opened on the outside of the shaft body and communicates with the connecting cavity, the side opening is located on the inner side of the assembly groove, the No. 2 clamping part is elastically installed in the side opening, the No. 2 clamping part includes a second clamping plate, a second spring and a positioning frame, the positioning frame is fixedly sleeved in the side opening, one end of the second spring is fixedly connected to the positioning frame, and the other end is fixedly connected to the second clamping plate.

[0013] Preferably, the movable tube is rotatably sleeved in the assembly groove, the area of ​​the grinding disc is larger than the end surface area of ​​the pipeline to be welded, an arc groove is provided in front of the outer surface of the grinding disc, and a positioning hole is opened on the side of the grinding disc.

[0014] Preferably, a positioning assembly is fixedly provided on the top of the base, and the positioning assembly includes a vertical plate and a positioning bolt. The vertical plate is fixed to the top of the base through a bottom support plate, and the positioning bolt is spirally sleeved on the side of the vertical plate. The positioning bolt is located on the rotation path of the positioning hole.

[0015] Preferably, a connecting mechanism is provided on the back side of the fixing seat, one end of the connecting mechanism is fixedly connected to the No. 2 valve, and the other end is sleeved on the outer end of the shaft body and connected to the connecting cavity.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention uses a control component to input pressurized air into the clamping sleeve to fix the inserted pipeline, and cooperates with the sliding sleeve of the slide groove and the slide plate to realize the rotation of the clamping sleeve driven by the rotating cylinder, and cooperates with the rotating main shaft to drive the rotating cylinder to rotate through the driving gear to realize the rotation of the pipeline to be welded, so as to cooperate with the top welding end to realize the surrounding welding of the pipeline, and the pressurized air inside the rotating main shaft is input through the air supply component, and the composite processing component installed on the rotating main shaft is rotated. Before welding, the composite processing component is located between the ends of the two groups of pipelines, so that when the motor is started, the pipeline and the grinding disk are rotated at the same time, and the front ends of the two groups of pipelines before welding are intermittently ground in accordance with different rotation directions, without the need to additionally provide grinding power equipment, bidirectional rotation grinding can be realized in accordance with the motor and the rotating main shaft for realizing rotary welding, and the grinding is intermittent, so as to avoid overheating and deformation of the pipeline ends caused by continuous contact grinding, and the actual grinding effect is good, the power equipment investment is small, and the use effect is good.

[0018] 2. The present invention reuses the composite processing component. After the grinding and welding processing, the outer side of the welding pipeline after welding is contacted and approached by the independent rotation of the rotating spindle, the laterally fixed composite processing component and the lateral movement of the composite processing component. Thus, a single motor and the rotation of the rotating spindle are used to realize the rotation of the pipeline after welding, and at the same time, the grinding processing of the welding point on the outer side of the welding is realized again in cooperation with the static and fixed grinding disk on the outside, thereby improving the smoothness of the outer side of the welding point. The secondary grinding processing is still realized by the single power motor mentioned above, which saves the investment in power equipment, is simple and quick to operate, and has a good secondary grinding processing effect.

[0019] 3. The present invention cooperates with the switching of the air supply direction of the air supply component to utilize pressurized air to realize the fixing action of the composite processing component on the one hand, and to realize the lateral control action of the control component on the other hand. The former ensures the stable rotation of the composite processing component and realizes end grinding, and the latter realizes the movement control of the clamped and fixed pipeline. Especially after the end is ground, the synchronous movement and alignment of the pipelines on both sides can be quickly realized to ensure that the aligned welding position is centered and located directly below the welding end. The actual alignment has high precision and fast speed, which improves the positioning effect during welding and further reduces the investment in power equipment. The control of the two different working states before and after is concentrated in a single set of air supply components to achieve good results. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a back schematic diagram of the present invention;

[0022] Figure 3 It is a cross-sectional schematic diagram of the present invention;

[0023] Figure 4 It is a cross-sectional schematic diagram of the fixing seat and the rotating drum of the present invention;

[0024] Figure 5 It is a cross-sectional schematic diagram of the fixing seat of the present invention;

[0025] Figure 6 is a schematic diagram of a control assembly of the present invention;

[0026] Figure 7 It is an exploded schematic diagram of the clamping sleeve of the present invention;

[0027] Figure 8 It is a cross-sectional schematic diagram of the clamping sleeve of the present invention;

[0028] Fig. 9 is a schematic diagram of the gas supply assembly of the present invention;

[0029] Fig.10 It is a schematic diagram of the rotating main shaft and the driving gear of the present invention;

[0030] Fig.11 is a schematic diagram of a composite processing assembly of the present invention;

[0031] Fig.12 It is a schematic diagram of the rotating main shaft of the present invention;

[0032] Fig.13 for Fig.12 A schematic diagram of the structure enlargement at the center A;

[0033] Fig.14 It is a schematic diagram of the positioning component of the present invention.

[0034] In the figure: 1, base; 2, fixed seat; 3, rotating cylinder; 31, cylinder body; 32, driven gear; 4, internal cavity; 5, clamping sleeve; 51, clamping sleeve; 52, inner groove; 53, through hole; 54, clamping part No. 1; 6, control component; 61, distribution ring; 62, ring groove; 63, auxiliary air pump; 64, auxiliary air pipe; 65, pull rod; 66, reset spring; 7, air supply component; 71, main air pump; 72, connecting sleeve; 73, valve No. 1; 74. Valve No. 2; 75. Intermediate pipe; 8. Rotating main shaft; 81. Shaft body; 82. Connecting cavity; 83. Assembly groove; 84. Side port; 85. Clamping part No. 2; 9. Driving gear; 10. Composite processing assembly; 101. Movable pipe; 102. Electric push rod; 103. Grinding disc; 104. Side disc; 11. Positioning assembly; 111. Vertical plate; 112. Positioning bolt; 12. Connecting mechanism; 13. Welding end; 14. Guide pipe. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0036] like Figures 1 to 14 As shown, an embodiment of the present invention provides an automatic welding machine for a tent support, comprising a base 1 and a fixed base 2 fixed on the top of the base 1, a rotating cylinder 3 is rotatably installed inside the fixed base 2, a clamping sleeve 5 is slidably installed inside the rotating cylinder 3, a control component 6 is provided on the outside of the clamping sleeve 5, the control component 6 controls the clamping sleeve 5 to clamp and fix the pipeline to be welded through pressurized air, and controls the clamping sleeve 5 to move laterally, an air supply component 7 is fixedly provided on the top of the base 1, an air outlet end of the air supply component 7 is connected to the inside of the fixed base 2, a rotating main shaft 8 is provided on the back of the fixed base 2, a driving gear 9 is sleeved on the outer surface of the rotating main shaft 8, a composite processing component 10 is rotatably sleeved on the outer surface of the rotating main shaft 8, the driving gear 9 drives the rotating cylinder 3 to rotate, the composite processing component 10 grinds the end of the pipeline to be welded when rotating, and grinds the outer side of the pipeline to be welded when fixed, and a welding end 13 is fixedly provided on the top of the fixed base 2;

[0037] The composite processing assembly 10 includes a movable tube 101 rotatably sleeved on the rotating main shaft 8, an electric push rod 102 fixedly installed on the outer side of the movable tube 101, a grinding disc 103 fixed on the free end of the electric push rod 102, and a side disc 104 fixedly sleeved on the outer side of the movable tube 101.

[0038] Embodiment 1: Before welding, adjust the position of the composite processing component 10 so that the movable tube 101 rotates around the rotating main shaft 8 to a horizontal state, and start the air supply component 7, use the No. 1 valve 73 to guide the input pressure air to the intermediate tube 75, and input the gas into the connecting mechanism 12 through the No. 2 valve 74, so that the pressure air is guided to be input into the connecting cavity 82 of the rotating main shaft 8, so that the pressure air acts on the side port 84 and pushes the No. 2 clamping part 85 distributed on both sides to support and fix the outer movable tube 101 from the inside, and then insert the two tent bracket pipelines to be welded into the clamping sleeve 5, and keep the front end of the pipeline to be welded in the barrel 31 of the rotating barrel 3, and keep the front end of the pipeline to be welded in contact with the side of the grinding disc 103 in the composite processing component 10, start the auxiliary air pump 63 in the control component 6, so that the pressure air passes through The auxiliary air pipe 64 enters the distribution ring 61 and is input into the through hole 53 of the clamping sleeve 5 through the annular groove 62. Further pressurized air is input into the corresponding inner groove 52 through the through hole 53, and pushes the elastically connected No. 1 clamping part 54 to move horizontally, and moves around the distributed No. 1 clamping part 54 to clamp and fix the inserted pipeline to be welded. The motor is started and the rotating spindle 8 is driven to rotate, so that the driving gear 9 drives the driven gear 32 to rotate, so that the rotating cylinder 3 drives the internal clamping sleeve 5 and the fixed pipeline to be welded to rotate together. As the ends of the pipelines to be welded on both sides rotate by themselves, the rotating spindle 8 drives the installed and fixed composite processing assembly 10 to rotate at the same time, so that the pipelines to be welded on both sides rotate by themselves, and the grinding disc 103 rotates and intermittently interspersed between the pipelines to be welded on both sides, to achieve intermittent grinding treatment, and complete the pipeline end treatment before welding.

[0039] First, by using the control component 6 to input the pressurized air in the clamping sleeve 5, the inserted pipeline is fixed, and the sliding sleeve of the slide groove and the slide plate is cooperated to realize the rotation of the clamping sleeve 5 driven by the rotating cylinder 3, and the rotating main shaft 8 drives the rotating cylinder 3 to rotate through the driving gear 9 to realize the rotation of the pipeline to be welded, so as to cooperate with the top welding end 13 to realize the surrounding welding of the pipeline, and the pressurized air inside the rotating main shaft 8 is input by the air supply component 7, and the composite processing component 10 installed on the rotating main shaft 8 is rotated. Before welding, the composite processing component 10 is located between the ends of the two groups of pipelines, so that when the motor is started, the pipeline and the grinding disc 103 are rotated simultaneously, and the front ends of the two groups of pipelines before welding are intermittently ground in accordance with different rotation directions. There is no need to add additional grinding power equipment. In conjunction with the motor and the rotating main shaft 8 for realizing rotary welding, bidirectional rotation grinding can be realized, and the grinding is intermittent to avoid overheating and deformation of the pipeline ends caused by continuous contact grinding. The actual grinding effect is good, the power equipment investment is small, and the use effect is good.

[0040] Embodiment 2: After the end processing is completed, the input of pressurized air into the rotating main shaft 8 is cancelled, the No. 2 clamping part 85 is reset, and the electric push rod 102 in the composite processing component 10 is started, so that the grinding disc 103 withdraws from between the ends of the pipelines on both sides, and the composite processing component 10 that loses its fixation naturally swings down to the vertical bottom, and the No. 1 valve 73 is controlled to operate, and the pressurized air of the main air pump 71 is further input into the guide pipe 14 in the internal cavity 4, and the piston sleeve on the inner end of the pull rod 65 is pushed in the reverse direction in the internal cavity 4 to move horizontally, so that the pressurized air pushes the pull rod 65 to move horizontally, and the pull rods 65 on both sides move along the clamping sleeve 5 and push the slide plate, so that the clamping sleeves 5 on both sides move synchronously and move closer, so that the two groups of pipelines after end grinding are synchronously close and fit together, completing the positioning for welding, and starting again. The motor is started to rotate the rotating spindle 8, so that the rotating cylinder 3 rotates and the pipeline rotates, and the welding end 13 is started, and the welding end moves down and approaches the connection between the two sets of pipe ends for welding and fixing. During welding, the composite processing component 10 remains stationary. After welding is completed, the welding end 13 is removed, and the composite processing component 10 is adjusted to be horizontal. The positioning bolt 112 in the rotating positioning component 11 is rotated so that the composite processing component 10 is fixed in the positioning component 11 and remains horizontal and stable. The electric push rod 102 is started and the grinding disc 103 is driven to move horizontally and approach the outside of the pipeline after welding. The rotating spindle 8 is kept to realize the rotation of the rotating cylinder 3, so that the pipeline after welding maintains rotation while contacting and grinding with the arc groove of the grinding disc 103 on the outside, so as to realize the grinding treatment of the outer ring welding after welding.

[0041] First, by reusing the composite processing component 10, after the grinding and welding processing, through the independent rotation of the rotating spindle 8, in conjunction with the laterally fixed composite processing component 10, and in conjunction with the lateral movement of the composite processing component 10, the outside of the welding pipeline after welding is contacted and approached, thereby utilizing a single set of motors and the rotation of the rotating spindle 8, while realizing the rotation of the pipeline after welding, in conjunction with the outer stationary fixed grinding disc 103, the welding point on the outside of the welding is ground again to improve the smoothness of the outer side of the welding point, and the secondary grinding process is still achieved using the above-mentioned single set of power motors, saving power equipment investment, simple and quick operation, and good secondary grinding effect.

[0042] In addition, by coordinating the switching of the air supply direction of the air supply component 7, on the one hand, pressurized air is used to realize the fixing action of the composite processing component 10, and on the other hand, the lateral control action of the control component 6 is realized. The former ensures the stable rotation of the composite processing component 10 and realizes the end grinding, and the latter realizes the movement control of the clamped and fixed pipeline. Especially after the end grinding, the synchronous movement and alignment of the pipelines on both sides are quickly realized to ensure that the aligned welding position is centered and located directly below the welding end 13. The actual alignment has high accuracy and fast speed, which improves the positioning effect during welding and further reduces the investment in power equipment. The control of the two different working states before and after is concentrated in a single group of air supply components 7 to achieve good results.

[0043] Among them, an internal cavity 4 is opened inside the fixed seat 2, a motor is fixedly installed on the back of the fixed seat 2, the output shaft of the motor is fixedly connected to the rotating main shaft 8 and drives the rotating main shaft 8 to rotate, the rotating cylinder 3 includes a cylinder body 31 and a driven gear 32, the driven gear 32 is fixedly sleeved on the outer surface of the cylinder body 31 and meshed with the driving gear 9, the number of fixed seats 2 is two and they are symmetrically distributed on the top of the base 1, the cylinder body 31 corresponds to the fixed seat 2 one by one and is rotatably sleeved inside the fixed seat 2, a sliding groove is opened on the inner wall of the cylinder body 31, and a guide tube 14 is fixedly installed inside the internal cavity 4.

[0044] By utilizing the fixed seat 2 to support the installation of the rotating cylinder 3, and cooperating with the adapting arc groove in the fixed seat 2 and the retaining ring on the outside of the rotating cylinder 3, stable rotation is achieved. The motor is a single-group power motor to achieve the rotation of the rotating spindle 8, provide power for rotary welding, rotary end grinding and rotary side grinding, and the guide tube 14 changes the airflow inlet position in the internal cavity 4.

[0045] Among them, the clamping sleeve 5 includes a clamping cylinder 51, an inner groove 52, a through hole 53 and a clamping portion No. 1 54. The clamping cylinder 51 is movably sleeved in the cylinder body 31. The inner groove 52 is opened inside the clamping cylinder 51 and is evenly spaced around. The through hole 53 is opened on the outer side surface of the clamping cylinder 51 and corresponds to the inner groove 52 one by one, and the inner groove 52 and the through hole 53 are connected. The clamping portion No. 1 54 is elastically sleeved in the inner groove 52. The clamping portion No. 1 54 includes a clamping plate 1 and a spring 1. One end of the spring 1 is fixedly connected to the clamping plate 1, and the other end is fixed in the inner groove 52. The outer side surface of the clamping cylinder 51 is fixedly connected with a slide plate, and the slide plate is slidably sleeved in the slide groove.

[0046] The inserted pipe is clamped and fixed by utilizing the clamping sleeve 5, and the sliding sleeve of the slide plate and the slide groove is cooperated so that the clamping sleeve 5 follows the rotation of the rotating cylinder 3. The No. 1 clamping part 54 bears the air pressure thrust and clamps the pipe. The spring 1 is used for elastic reset, and the through hole 53 is used to communicate with the input pressure air.

[0047] Among them, the control component 6 includes a distribution ring 61, an annular groove 62, an auxiliary air pump 63, an auxiliary air pipe 64, a pull rod 65 and a return spring 66. The distribution ring 61 is movably sleeved on the outer surface of the clamping cylinder 51. The annular groove 62 is opened inside the distribution ring 61 and is connected with the through hole 53. The auxiliary air pump 63 is fixed on the top of the fixed seat 2. One end of the auxiliary air pipe 64 is fixedly connected and communicated with the air outlet end of the auxiliary air pump 63. The other end of the auxiliary air pipe 64 is fixedly connected to the distribution ring 61 and is connected with the annular groove 62. One end of the pull rod 65 is fixedly connected to the distribution ring 61. The other end of the pull rod 65 is movably sleeved in the fixed seat 2 and extends into the internal cavity 4. The inner end of the pull rod 65 is provided with a piston sleeve. One end of the return spring 66 is fixed in the internal cavity 4, and the other end is fixedly connected to the piston sleeve. The piston sleeve is movably sleeved with the guide tube 14.

[0048] The control component 6 realizes ventilation inside the clamping sleeve 5 respectively, and uses the introduced pressurized air to achieve clamping and fixing. The auxiliary air pipe 64 is a hose, and sealing ring pads are provided on both sides of the inner cavity of the distribution ring 61 to ensure the dynamic seal between the distribution ring 61 and the clamping cylinder 51, and to ensure that the clamping cylinder 51 maintains a seal when it rotates relative to the clamping cylinder 51 to avoid leakage of pressurized air. The pull rod 65 realizes lateral movement through the piston sleeve at the inner end, and guides the input pressurized air to the outside of the piston sleeve through the guide tube 14 movably connected to the piston sleeve, pushing the piston sleeve to move laterally in the opposite direction and compressing the reset spring 66, so that the pull rod 65 drives the distribution ring 61 to move laterally, and the distribution ring 61 pushes the slide plate on the outer side of the clamping cylinder 51, thereby pushing the clamping sleeve 5 to move laterally.

[0049] Among them, the air supply component 7 includes a main air pump 71, a connecting sleeve 72, a valve No. 1 73, a valve No. 2 74 and an intermediate pipe 75. The connecting sleeve 72 is fixed and connected to the air outlet end of the main air pump 71. The valve No. 1 73 is fixedly sleeved in the connecting sleeve 72. The valve No. 2 74 is connected to the valve No. 1 73 through the intermediate pipe 75. The two ends of the connecting sleeve 72 are fixedly connected to the two fixed seats 2 and are connected to the guide pipe 14.

[0050] The air supply assembly 7 provides pressurized air in different directions to respectively clamp and fix the composite processing assembly 10 and push the lateral movement control of the clamping sleeve 5. The guide pipe 14 guides the output airflow of the connecting sleeve 72 to the outside of the piston sleeve.

[0051] Among them, the rotating main shaft 8 includes a shaft body 81, a connecting cavity 82, an assembly groove 83, a side opening 84 and a second clamping part 85. The shaft body 81 is fixedly sleeved with the driving gear 9. The connecting cavity 82 is opened at the end of the shaft body 81 and extends to the inside. The assembly groove 83 is opened on the outer surface of the shaft body 81. The side opening 84 is opened on the outside of the shaft body 81 and is connected with the connecting cavity 82. The side opening 84 is located on the inner side of the assembly groove 83. The second clamping part 85 is elastically installed in the side opening 84. The second clamping part 85 includes a second clamping plate, a second spring and a positioning frame. The positioning frame is fixedly sleeved in the side opening 84. One end of the second spring is fixedly connected to the positioning frame, and the other end is fixedly connected to the second clamping plate.

[0052] By utilizing the rotation of the rotating main shaft 8, the rotation of the driving gear 9 is driven, and the rotation control of the driven gear 32 is realized. In conjunction with the composite processing component 10 with an external movable sleeve, on the one hand, the power for rotational welding of the pipe fitting is realized. On the other hand, when the composite processing component 10 is fixed to the rotating main shaft 8, the rotation of the composite processing component 10 is synchronously realized. A single set of motors can realize intermittent grinding processing of the pipe fitting end and relatively reverse rotation grinding processing. The second clamping part 85 is driven by the internal air pressure to achieve support, clamping and fixation of the composite processing component 10 from the inside to the outside.

[0053] The movable tube 101 is rotatably sleeved in the assembly groove 83 , the area of ​​the grinding disc 103 is larger than the end surface area of ​​the pipeline to be welded, an arc groove is provided in front of the outer surface of the grinding disc 103 , and a positioning hole is opened on the side of the grinding disc 103 .

[0054] The composite processing component 10 realizes dynamic intermittent end grinding and static continuous outer side grinding. The arc groove adapts to the outer welding edge of the pipe fitting to improve the grinding effect. The positioning hole is convenient for cooperating with the positioning component 11 to maintain static horizontal fixation.

[0055] Among them, a positioning component 11 is fixed on the top of the base 1, and the positioning component 11 includes a vertical plate 111 and a positioning bolt 112. The vertical plate 111 is fixed to the top of the base 1 through a bottom support plate, and the positioning bolt 112 is spirally sleeved on the side of the vertical plate 111. The positioning bolt 112 is located on the rotation path of the positioning hole.

[0056] The composite processing assembly 10 without clamping can be clamped and fixed horizontally by using the positioning bolts 112 in the positioning assembly 11, and the grinding process of the outer side surface can be realized by cooperating with the grinding disc 103 after shrinking and displacement.

[0057] A connecting mechanism 12 is provided on the back of the fixing seat 2 , one end of the connecting mechanism 12 is fixedly connected to the No. 2 valve 74 , and the other end is sleeved on the outer end of the shaft body 81 and communicated with the connecting cavity 82 .

[0058] The connecting mechanism 12 is used to input pressurized air into the rotating main shaft 8, and the upper end of the connecting mechanism 12 is a cover body, and is sleeved on the outer side of the end of the shaft body 81 to ensure that the internal pressurized air can be continuously input into the connecting cavity 82 under dynamic rotation. Valve No. 1 73 controls whether the gas enters the connecting sleeve 72 or the intermediate tube 75, and valve No. 2 74 controls the pressurized air input into the intermediate tube 75 to be input into the connecting mechanism 12.

[0059] The working principle and use process of the present invention are as follows: before welding, the position of the composite processing component 10 is adjusted so that the movable tube 101 rotates around the rotating main shaft 8 to a horizontal state, and the air supply component 7 is started, and the input pressure air is guided to the intermediate tube 75 by the No. 1 valve 73, and the gas is input into the connecting mechanism 12 through the No. 2 valve 74, so that the pressure air is guided to be input into the connecting cavity 82 of the rotating main shaft 8, so that the pressure air acts on the side port 84, and pushes the No. 2 clamping part 85 distributed on both sides to move, and the outer movable tube 101 is supported and fixed from the inside, and then the two tent bracket pipelines to be welded are inserted into the clamping sleeve 5, and the front end of the pipeline to be welded is kept sleeved in the cylinder body 31 of the rotating cylinder 3, and the front end of the pipeline to be welded is kept in contact with the side of the grinding disc 103 in the composite processing component 10, and the auxiliary air pump 63 in the control component 6 is started so that the pressure The forced air enters the distribution ring 61 through the auxiliary air pipe 64, and is input into the through hole 53 of the clamping sleeve 5 through the annular groove 62. Further pressurized air is input into the corresponding inner groove 52 through the through hole 53, and pushes the elastically connected No. 1 clamping part 54 to move horizontally, moves around the distributed No. 1 clamping part 54 and clamps and fixes the inserted pipeline to be welded, starts the motor and drives the rotating spindle 8 to rotate, so that the driving gear 9 drives the driven gear 32 to rotate, so that the rotating cylinder 3 drives the internal clamping sleeve 5 and the fixed pipeline to be welded to rotate together, and while the ends of the pipelines to be welded on both sides rotate by themselves, the rotating spindle 8 drives the installed and fixed composite processing assembly 10 to rotate at the same time, so that while the pipelines to be welded on both sides rotate by themselves, the grinding disc 103 rotates and intermittently intersperses between the pipelines to be welded on both sides, realizing intermittent grinding processing, and completing the pipeline end processing before welding;After the end processing is completed, the input of pressurized air to the rotating spindle 8 is cancelled, the No. 2 clamping part 85 is reset, and the electric push rod 102 in the composite processing component 10 is started, so that the grinding disc 103 withdraws from between the ends of the pipelines on both sides, and the composite processing component 10 that has lost its fixation naturally swings down to the vertical bottom, and the No. 1 valve 73 is controlled to operate, and the pressurized air of the main air pump 71 is further input into the guide pipe 14 in the internal cavity 4, and the piston sleeve on the inner end of the pull rod 65 is pushed in the reverse direction in the internal cavity 4, so that the pressurized air pushes the pull rod 65 to move laterally, and the pull rods 65 on both sides move along the clamping sleeve 5 and push the slide plate, so that the clamping sleeves 5 on both sides move synchronously and move closer, so that the two groups of pipelines after end grinding are synchronously close and fitted, completing the positioning for welding, and starting the electric push rod again. The machine rotates the rotating main shaft 8, rotates the rotating cylinder 3, rotates the pipeline, starts the welding end 13, moves the welding end down and approaches the connection between the two sets of pipeline ends, and performs welding and fixing. The composite processing component 10 remains stationary during welding. After welding is completed, the welding end 13 is removed, and the composite processing component 10 is adjusted to be horizontal. The positioning bolt 112 in the rotating positioning component 11 is rotated so that the composite processing component 10 is fixed in the positioning component 11 and remains horizontal and stable. The electric push rod 102 is started and the grinding disc 103 is driven to move horizontally and approach the outside of the pipeline after welding. The rotating main shaft 8 is kept to realize the rotation of the rotating cylinder 3, so that the pipeline after welding maintains rotation while contacting and grinding with the arc groove of the outer grinding disc 103, so as to realize the grinding treatment of the outer ring welding after welding. ;

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic welding machine for a tent support, comprising a base (1) and a fixing base (2) fixed on the top of the base (1), characterized in that: A rotating cylinder (3) is rotatably mounted inside the fixed seat (2), a clamping sleeve (5) is slidably mounted inside the rotating cylinder (3), a control assembly (6) is provided on the outside of the clamping sleeve (5), the control assembly (6) controls the clamping sleeve (5) to clamp and fix the pipeline to be welded through pressurized air, and controls the clamping sleeve (5) to move laterally, an air supply assembly (7) is fixedly mounted on the top of the base (1), an air outlet end of the air supply assembly (7) is connected to the inside of the fixed seat (2), a rotating main shaft (8) is provided on the back of the fixed seat (2), a driving gear (9) is sleeved on the outer surface of the rotating main shaft (8), a composite processing assembly (10) is rotatably sleeved on the outer surface of the rotating main shaft (8), the driving gear (9) drives the rotating cylinder (3) to rotate, the composite processing assembly (10) grinds the end of the pipeline to be welded when rotating, and grinds the outer side of the pipeline to be welded when fixed, and a welding end (13) is fixedly mounted on the top of the fixed seat (2); The composite processing assembly (10) comprises a movable tube (101) rotatably sleeved on a rotating main shaft (8), an electric push rod (102) fixedly mounted on the outer side of the movable tube (101), a grinding disc (103) fixed on the free end of the electric push rod (102), and a side disc (104) fixedly sleeved on the outer side of the movable tube (101).

2. The automatic welding machine for tent brackets according to claim 1 is characterized in that: An internal cavity (4) is provided inside the fixed seat (2). A motor is fixedly provided on the back of the fixed seat (2). The output shaft of the motor is fixedly connected to the rotating main shaft (8) and drives the rotating main shaft (8) to rotate. The rotating cylinder (3) comprises a cylinder body (31) and a driven gear (32). The driven gear (32) is fixedly sleeved on the outer surface of the cylinder body (31) and meshed with the driving gear (9). There are two fixed seats (2) and they are symmetrically distributed on the top of the base (1). The cylinder body (31) corresponds to the fixed seat (2) one by one and is rotatably sleeved inside the fixed seat (2). A sliding groove is provided on the inner wall of the cylinder body (31). A guide tube (14) is fixedly connected in the internal cavity (4).

3. The automatic welding machine for tent brackets according to claim 2 is characterized in that: The clamping sleeve (5) comprises a clamping sleeve (51), an inner groove (52), a through hole (53) and a clamping portion (54). The clamping sleeve (51) is movably sleeved in the cylinder body (31). The inner groove (52) is arranged inside the clamping sleeve (51) and is evenly spaced around. The through holes (53) are arranged on the outer side surface of the clamping sleeve (51) and correspond to the inner groove (52) one by one. The inner groove (52) and the through holes (53) are connected. The clamping portion (54) is elastically sleeved in the inner groove (52). The clamping portion (54) comprises a clamping plate (1) and a spring (1). One end of the spring (1) is fixedly connected to the clamping plate (1), and the other end is fixed in the inner groove (52). The outer side surface of the clamping sleeve (51) is fixedly connected to a slide plate, and the slide plate is slidably sleeved in the slide groove.

4. The automatic welding machine for tent brackets according to claim 3 is characterized by: The control assembly (6) comprises a distribution ring (61), an annular groove (62), an auxiliary air pump (63), an auxiliary air pipe (64), a pull rod (65) and a return spring (66); the distribution ring (61) is movably sleeved on the outer surface of the clamping tube (51); the annular groove (62) is arranged inside the distribution ring (61) and is connected to the through hole (53); the auxiliary air pump (63) is fixed on the top of the fixing seat (2); one end of the auxiliary air pipe (64) is fixedly connected to the air outlet end of the auxiliary air pump (63) and is connected to the air outlet end of the auxiliary air pump (63). The other end of the auxiliary air pipe (64) is fixedly connected to the distribution ring (61) and communicates with the ring groove (62). One end of the pull rod (65) is fixedly connected to the distribution ring (61). The other end of the pull rod (65) is movably sleeved in the fixed seat (2) and extends into the internal cavity (4). A piston sleeve is provided at the inner end of the pull rod (65). One end of the return spring (66) is fixed in the internal cavity (4), and the other end is fixedly connected to the piston sleeve. The piston sleeve is movably sleeved with the guide tube (14).

5. The automatic welding machine for tent brackets according to claim 4 is characterized by: The air supply assembly (7) comprises a main air pump (71), a connecting sleeve (72), a No. 1 valve (73), a No. 2 valve (74) and an intermediate pipe (75); the connecting sleeve (72) is fixed to and connected with the air outlet end of the main air pump (71); the No. 1 valve (73) is fixedly sleeved in the connecting sleeve (72); the No. 2 valve (74) is connected to the No. 1 valve (73) via the intermediate pipe (75); the two ends of the connecting sleeve (72) are fixedly connected to two fixed seats (2) and are connected to the guide pipe (14).

6. The automatic welding machine for tent brackets according to claim 5, characterized in that: The rotating main shaft (8) comprises a shaft body (81), a connecting cavity (82), an assembly groove (83), a side opening (84) and a second clamping portion (85); the shaft body (81) is fixedly sleeved with the driving gear (9); the connecting cavity (82) is provided at the end of the shaft body (81) and extends to the inside; the assembly groove (83) is provided on the outer surface of the shaft body (81); the side opening (84) is provided on the outside of the shaft body (81) and communicates with the connecting cavity (82); the side opening (84) is located on the inside of the assembly groove (83); the second clamping portion (85) is elastically installed in the side opening (84); the second clamping portion (85) comprises a second clamping plate, a second spring and a positioning frame; the positioning frame is fixedly sleeved in the side opening (84); one end of the second spring is fixedly connected to the positioning frame, and the other end is fixedly connected to the second clamping plate.

7. The automatic welding machine for tent brackets according to claim 6, characterized in that: The movable tube (101) is rotatably sleeved in the assembly groove (83); the area of ​​the grinding disc (103) is larger than the end surface area of ​​the pipeline to be welded; an arc groove is provided in front of the outer surface of the grinding disc (103); and a positioning hole is opened on the side of the grinding disc (103).

8. The automatic welding machine for tent brackets according to claim 7, characterized in that: A positioning assembly (11) is fixedly provided on the top of the base (1), and the positioning assembly (11) comprises a vertical plate (111) and a positioning bolt (112). The vertical plate (111) is fixed to the top of the base (1) via a bottom support plate, and the positioning bolt (112) is screwed onto the side of the vertical plate (111), and the positioning bolt (112) is located on the rotation path of the positioning hole.

9. The automatic welding machine for tent brackets according to claim 8, characterized in that: A communication mechanism (12) is provided on the back of the fixed seat (2), one end of the communication mechanism (12) is fixedly connected to the No. 2 valve (74), and the other end is sleeved on the outer end of the shaft body (81) and communicated with the communication cavity (82).

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