An automatic locking mechanism for internal weld seams in metal welded pipes and its working method

Abstract

This invention discloses an automatic locking mechanism for the built-in weld seam of a metal welded pipe, comprising a left locking assembly and a right locking assembly. The left locking assembly includes a left base, a left telescopic cylinder, a locking buckle, and a left roller. The left telescopic cylinder is connected to the locking buckle, and the left base is rotatably connected to the left roller. The right locking assembly includes a right base, a support seat, a right roller, a motor, a right telescopic cylinder, a support column, and a sensor. A pressure cylinder is fixed to the support column, and a pressure frame is fixed to the output end of the pressure cylinder. The pressure frame is rotatably connected to the pressure roller. The support seat and the motor are located outside the right base. A push cylinder is fixed to the upper end of the support seat, and the push cylinder is slidably connected to a slider. The slider is rotatably connected to a locking shaft, and the locking shaft is fixed to a swing rod. The sensor is fixed to the support column, and the swing rod is located outside the sensor. The right roller is rotatably connected to the motor, and a blade is fixed to the locking shaft. This invention features a simple structure, ease of use, reduced production costs, increased production efficiency, and fully automated operation.

Description

Technical Field

[0001] This invention relates to the field of ladder manufacturing, and specifically to an automatic locking mechanism and working method for the internal weld seam of a metal welded pipe. Background Technology

[0002] Currently, in the production and manufacturing process of ladders, the main structure of the ladder is assembled from a series of crossbars. The crossbars used in ladder processing are generally made of metal tubing, mainly aluminum alloy, steel pipe or iron pipe. However, iron pipe will rust over time, so aluminum alloy and steel pipe are the most common materials on the market.

[0003] Currently, horizontal tubes are made of either welded or seamless tubing. To save costs, most ladders are manufactured using welded tubing. Figure 1 As shown, this type of welded pipe is made by rolling and welding sheet metal. After welding, there is a long weld seam inside the pipe. The pipe needs to undergo extrusion, punching, and edge trimming processes in subsequent production. During the subsequent extrusion, the welded part is easily torn or deformed, causing the entire pipe to be scrapped. Therefore, a worker is required to observe the welded part of each pipe and place the pipe with the welded part facing outwards when placing it. This not only results in high production costs and low work efficiency, but also poses a safety hazard to the worker during operation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic locking mechanism for the built-in weld seam of a metal welded pipe, which has a simple structure, is easy to use, reduces production costs and improves production efficiency, and is fully automated.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] An automatic locking mechanism for internal welds of a metal welded pipe, comprising a left locking component and a right locking component. The left locking component and the right locking component are placed opposite to each other left and right. The left locking component includes a left base, a left telescopic cylinder, a locking buckle, and a left roller. The left telescopic cylinder is fixed outside the left base. The left telescopic cylinder is rotatably connected to a locking buckle on the side close to the right locking component. A left roller is also rotatably connected on the left base below the locking buckle. The right locking component includes a right base, a support seat, a right roller, a motor, a right pushing cylinder, a support column, and a sensor. The support column and the right roller are fixed on the side of the support seat close to the left locking component. A pressing cylinder is fixed on the support column. A pressing frame is fixed on the output end of the pressing cylinder. A pressing wheel is rotatably connected on the pressing frame. The support seat and the motor are fixed outside the right base. A right pushing cylinder is fixed on the upper end of the support seat. A slider is slidably connected to the right pushing cylinder. A locking shaft is rotatably connected to the slider. A swing rod is fixed on the outer end of the locking shaft. The sensor is fixed on the support column. The swing rod is located outside the sensor. The right roller is relatively rotatably connected to the motor. A blade is fixed on the locking shaft.

[0007] A further technical solution is that cross bars are also fixed on the left base and the right base. Pipe guiding pieces are also fixed on the cross bars. The outside of the pipe guiding pieces faces upward, and the inside faces downward and is connected to the cross bars. And the pipe guiding pieces are located inside the left roller and the right roller on the left base and the right base, so that the pipe can be placed on the pipe guiding pieces and automatically roll between the left roller and the right roller.

[0008] A further technical solution is that a pushing block is also fixed on the output end of the left telescopic cylinder. A pushing column is fixed on the pushing block. The locking buckle is rotatably connected inside the pushing column. A bearing can be placed inside the pushing column, and the locking buckle is connected to the bearing to achieve rotatable connection. Of course, it can also be achieved in other ways.

[0009] A further technical solution is that a pair of right rollers are rotatably connected on the right base, and a linkage wheel is fixed on the side end of one of the right rollers. A rotating wheel is fixed on the output end of the motor. A transmission belt is sleeved between the rotating wheel and the linkage wheel. After the motor rotates, it drives one of the right rollers to rotate through the transmission belt, so that the pipe placed on the pair of right rollers can rotate.

[0010] A further technical solution is that the transmission belt is a belt or a chain or a gear or other transmission parts, which plays a linkage role.

[0011] A further technical solution is that the support column is fixed on the right base in a "C" - shaped structure. The slider and the locking shaft penetrate through the support column and move left and right, making the support more stable and realizing the rotation after the pipe is locked.

[0012] A further technical solution is that a bearing is fixed at the bottom of the slider, and the locking shaft is connected inside the bearing, so that the locking shaft is rotatably connected to the slider through the bearing.

[0013] This invention also discloses a convenient operating method for an automatic locking mechanism for the internal weld seam of a metal welded pipe, comprising the following steps: 1) The pipe body is placed horizontally on the pipe body guide plate, and the pipe body rolls down along the pipe body guide plate and finally rolls into the inner side of the left and right rollers; 2) Then the left telescopic cylinder and the right push cylinder are activated simultaneously. The left telescopic cylinder drives the locking buckle to move to the right locking component, while the right push cylinder drives the slider and the locking shaft to move to the left locking component; 3) The inner side of the locking buckle and the locking shaft locks the pipe. After the tube body is locked, the clamping cylinder starts and drives the clamping frame and clamping wheel to move downward, locking the tube body between the clamping wheel and the right roller to prevent it from falling off; 4) After the tube body is locked, the motor starts, and the motor drives the right roller to rotate through the transmission belt, and the right roller rotates, which in turn drives the tube body to rotate; 5) When the welded edge inside the tube body contacts the blade on the locking shaft, the locking shaft rotates to one side; 6) When the swing rod at the other end of the locking shaft rotates to the outside of the sensor, the motor is turned off, the locking buckle and the locking shaft are reset, and the tube body enters the next process with this orientation.

[0014] The beneficial effects of this invention are as follows: This invention provides an automatic locking mechanism for the weld seam inside a metal welded pipe. After locking both sides of the pipe body, the pipe body is rotated by a roller on one side. The blade inside the locking shaft abuts against the weld edge inside the pipe body, forcing the other side of the locking shaft to rotate. When the rotation reaches the sensor position, the motor stops. Finally, the weld edge of the pipe body is fixed in position and transferred to the next process. The entire mechanism is simple in structure, easy to use, reduces production costs, improves production efficiency, and is fully automated. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional view of an existing welded pipe.

[0017] Figure 2 This is a perspective view of an automatic locking mechanism for built-in weld seams in a metal welded pipe according to the present invention.

[0018] Figure 3 This is a front view of an automatic locking mechanism for built-in weld seams in a metal welded pipe according to the present invention.

[0019] Figure 4 This is a right view of an automatic locking mechanism for built-in weld seams in a metal welded pipe according to the present invention.

[0020] Figure 5 This is a top view of an automatic locking mechanism for built-in weld seams in a metal welded pipe according to the present invention.

[0021] Figure 6 This is a schematic diagram of the right roller rotatably connected to the right base in an automatic locking mechanism for built-in weld seams of a metal welded pipe according to the present invention.

[0022] Figure 7 This is a schematic diagram of the locking shaft in an automatic locking mechanism for built-in weld seams of a metal welded pipe according to the present invention.

[0023] Figure 8 This is a schematic diagram of the automatic locking mechanism for the built-in weld seam of a metal welded pipe according to the present invention during use;

[0024] Figure 9 This is a circuit diagram of an automatic locking mechanism for the built-in weld seam of a metal welded pipe according to the present invention.

[0025] Figure 1-9 In the middle: 11-Tube guide plate, 12-Left base, 13-Left roller, 14-Push column, 15-Left telescopic cylinder, 16-Push block, 17-Locking buckle, 18-Horizontal bar, 21-Support column, 22-Pressure frame, 23-Pressure wheel, 24-Swing rod, 25-Linkage wheel, 26-Right base, 27-Right roller, 28-Transmission belt, 29-Rotating wheel, 210-Motor, 211-Pressure cylinder, 212-Slider, 213-Right push cylinder, 214-Locking shaft, 215-Support seat, 216-Sensor, 217-Bearing, 218-Blade. Detailed Implementation

[0026] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0027] See Figures 1 to 9As shown, an automatic locking mechanism for the weld seam inside a metal welded pipe includes a left locking component and a right locking component, which are placed opposite each other. The left locking component includes a left base 12, a left telescopic cylinder 15, a locking buckle 17, and a left roller 13. The left telescopic cylinder 15 is fixed to the outside of the left base 12, and the locking buckle 17 is rotatably connected to the left telescopic cylinder 15 near the right locking component. The left roller 13 is also rotatably connected to the left base 12 below the locking buckle 17. The right locking component includes a right base 26, a support 215, a right roller 27, a motor 210, a right push cylinder 213, a support column 21, and a sensor 216. The support column 21 and the right roller 27 are fixed to the support 26. The support 215 is located near the left locking assembly. A clamping cylinder 211 is fixed on the support column 21. A clamping frame 22 is fixed on the output end of the clamping cylinder 211. A clamping wheel 23 is rotatably connected to the clamping frame 22. The support 215 and the motor 210 are fixed on the outside of the right base 26. A right push cylinder 213 is fixed on the upper end of the support 215. A slider 212 is slidably connected to the right push cylinder 213. A locking shaft 214 is rotatably connected to the slider 212. A swing rod 24 is fixed on the outer end of the locking shaft 214. A sensor 216 is fixed on the support column 21. The swing rod 24 is located outside the sensor 216. The right roller 27 is rotatably connected to the motor 210. A blade 218 is fixed on the locking shaft 214.

[0028] Crossbars 18 are also fixed to the left base 12 and the right base 26. A pipe body guide piece 11 is further fixed to the crossbar 18. The outer side of the pipe body guide piece 11 faces upward, while the inner side faces downward and is connected to the crossbar 18. The pipe body guide piece 11 is located inside the left roller 13 and the right roller 27 on the left base 12 and the right base 26, so that the pipe body can be placed on the pipe body guide piece 11 and automatically roll between the left roller 13 and the right roller 27. A pushing block 16 is also fixed to the output end of the left telescopic cylinder 15. A pushing column 14 is fixed to the pushing block 16. The locking buckle 17 is rotatably connected inside the pushing column 14. A bearing can be placed inside the pushing column 14, and the locking buckle 17 is connected to the bearing to achieve rotatable connection. Of course, it can also be achieved in other ways. A pair of right rollers 27 are rotatably connected to the right base 26, and a linkage wheel 25 is fixed to the side end of one of the right rollers 27. A rotating wheel 29 is fixed to the output end of the motor 210. A transmission belt 28 is sleeved between the rotating wheel 29 and the linkage wheel 25. After the motor 210 rotates, it drives one side of the right roller 27 to rotate through the transmission belt 28, so that the pipe body placed on the pair of right rollers 27 can rotate. The transmission belt 28 is a belt or a chain or other transmission parts such as gears, which plays a linkage role. The support column 21 is fixed to the right base 26 in a "C" - shaped structure. The slider 212 and the locking shaft 214 penetrate through the support column 21 and move left and right, making the support more stable and realizing the rotation of the pipe body after locking. A bearing 217 is fixed to the bottom end of the slider 212, and the locking shaft 214 is connected inside the bearing 217. The locking shaft 214 is rotatably connected to the slider 212 through the bearing 217.

[0029] The working method of an automatic locking mechanism for internal welds of a metal welded pipe according to the present invention includes the following steps: 1) Horizontally place the pipe body on the pipe body guide piece 11, and the pipe body rolls down along the pipe body guide piece 11 and finally rolls between the left roller 13 and the right roller 27 on the left and right sides; 2) Then the left telescopic cylinder 15 and the right pushing cylinder 213 are started simultaneously. The left telescopic cylinder 15 drives the locking buckle 17 to move towards the locking component to the right, while the right pushing cylinder 213 drives the slider 212 together with the locking shaft 214 to move towards the locking component to the left; 3) After the inner sides of the locking buckle 17 and the locking shaft 214 lock the pipe body, the pressing cylinder 211 is started and drives the pressing frame 22 and the pressing wheel 23 to move downward, and makes the pressing wheel 23 lock the pipe body between it and the right roller 27 to prevent it from falling; 4) After the pipe body is locked, the motor 210 is started. The motor 210 drives the right roller 27 to rotate through the transmission belt 28, and the right roller 27 rotates to drive the pipe body to rotate; 5) When the welded edge inside the pipe body contacts the blade 218 on the locking shaft 214, the locking shaft 214 rotates to one side; 6) When the swing rod 24 at the other end of the locking shaft 214 rotates to the outside of the sensor 216, the motor 210 is turned off, and the locking buckle 17 and the locking shaft 214 are reset, and the pipe body enters the next process in this orientation.

[0030] The above embodiments are merely examples of the present invention and are not intended to limit the implementation and scope of the present invention. All technical solutions that are the same as or equivalent to the contents described in the claims of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic locking mechanism for the built-in weld seam of a metal welded pipe, comprising a left locking component and a right locking component, characterized in that: The left locking component and the right locking component are placed opposite to each other left and right. The left locking component includes a left base, a left telescopic cylinder, a locking buckle, and a left roller. The left telescopic cylinder is fixed on the outside of the left base. A locking buckle is rotatably connected to the side of the left telescopic cylinder close to the right locking component. A left roller is also rotatably connected on the left base and below the locking buckle. The right locking component includes a right base, a support seat, a right roller, a motor, a right push cylinder, a support column, and a sensor. The support column and the right roller are fixed on the side of the support seat close to the left locking component. A pressing cylinder is fixed on the support column. A pressing frame is fixed on the output end of the pressing cylinder. A pressing wheel is rotatably connected on the pressing frame. The support seat and the motor are fixed on the outside of the right base. A right push cylinder is fixed on the upper end of the support seat. A slider is slidably connected to the right push cylinder. A locking shaft is rotatably connected to the slider. A swing rod is fixed on the outer end of the locking shaft. The sensor is fixed on the support column. The swing rod is located outside the sensor. The right roller is relatively rotatably connected to the motor. A blade is fixed on the locking shaft. A pushing block is also fixed on the output end of the left telescopic cylinder. A pushing column is fixed on the pushing block. The locking buckle is rotatably connected in the pushing column. A pair of right rollers are rotatably connected on the right base, and a coupling wheel is fixed on the side end of one of the right rollers. A rotating wheel is fixed on the output end of the motor. A transmission belt is sleeved between the rotating wheel and the coupling wheel. When the welded edge inside the pipe contacts the blade on the locking shaft, the locking shaft rotates to one side. When the swing rod at the outer end of the locking shaft rotates to the position of the sensor, the motor is turned off.

2. The automatic locking mechanism for the built-in weld seam of a metal welded pipe according to claim 1, characterized in that: Cross bars are also fixed on the left base and the right base, and pipe guiding pieces are fixed on the cross bars.

3. The automatic locking mechanism for the built-in weld seam of a metal welded pipe according to claim 1, characterized in that: The transmission belt is a belt or a chain or a gear.

4. The automatic locking mechanism for the built-in weld seam of a metal welded pipe according to claim 1, characterized in that: The support column is fixed on the right base in a "C" - shaped structure, and the slider and the locking shaft penetrate through the support column and move left and right.

5. The automatic locking mechanism for the internal weld seam of a metal welded pipe according to claim 1, characterized in that: [[ID=​4]]A bearing is fixed at the bottom end of the slider, and the locking shaft is connected inside the bearing.

6. The working method of the automatic locking mechanism for the built-in weld seam of a metal welded pipe according to claim 1, characterized in that: It includes the following steps: 1). Horizontally place the pipe on the pipe guiding pieces. The pipe rolls down along the pipe guiding pieces and finally rolls into the inner sides of the left roller and the right roller on the left and right sides. 2). Then, the left telescopic cylinder and the right push cylinder are started simultaneously. The left telescopic cylinder drives the locking buckle to move towards the right locking component, and the right push cylinder drives the slider together with the locking shaft to move towards the left locking component; at the same time, the locking shaft is sent into the pipe. 3). After the inner sides of the locking buckle and the locking shaft lock the pipe, the pressing cylinder is started and drives the pressing frame and the pressing wheel to move downwards, and makes the pressing wheel lock the pipe between the pressing wheel and the right roller to limit its position and prevent it from falling. [[ID=​9]]4). After the pipe is locked, the motor is started. The motor drives the right roller to rotate through the transmission belt, and the right roller rotates to drive the pipe to rotate. 5). When the welded edge inside the pipe contacts the blade on the locking shaft, the locking shaft rotates to one side. 6). When the swing rod at the outer end of the locking shaft rotates to the position of the sensor, the motor is turned off, and the locking buckle and the locking shaft are reset. The pipe enters the next process with the current orientation.

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