Feeding mechanism for welding high-frequency welded pipe

Abstract

The utility model provides a feeding mechanism for welding of a high-frequency welded pipe, and belongs to the field of steel pipe production. According to the feeding mechanism for welding of the high-frequency welded pipe, the driving roller set is adopted to drive the steel pipe to rotate, in the rotating process of the steel pipe, the downward pressing structure of the sensing assembly presses the triggering structure to the top of the steel pipe, and when the steel pipe rotates to the position where the gap is opposite to the telescopic elastic needle of the triggering structure; the telescopic elastic needle is inserted into the gap of the steel pipe and triggers the start-stop switch to control the driving roller to stop, so that the steel pipe stops at the upward angle of the gap; pushing one end of the steel pipe axially by utilizing a pushing hook of the pushing chain, and pushing the steel pipe into a high-frequency welding machine to finish feeding; according to the feeding mechanism for welding of the high-frequency welded pipe, the steel pipe can be automatically adjusted until the gap faces upwards, so that the steel pipe can be conveyed in any conveying mode in the previous procedure, the flexibility is greatly improved, and the angle of the steel pipe does not need to be manually adjusted.

Description

Technical Field

[0001] This application belongs to the technical field of steel pipe production. More specifically, it relates to a feeding mechanism for high-frequency welded pipe welding. Background Art

[0002] In the production of straight-seam steel pipes, usually, a steel strip is first bent into a slotted steel pipe, and then the gap of the slotted steel pipe is welded using a high-frequency welding machine. Finally, the weld scar is scraped off using a scraper to make a straight-seam steel pipe.

[0003] When feeding the steel pipe into the high-frequency welding machine for welding, it is necessary to keep the gap of the steel pipe upward so that the high-frequency welding machine can smoothly complete the welding and the scraper can accurately scrape off the weld scar. For this reason, in the current production line, when the steel strip is bent into a slotted steel pipe, the gap of the steel pipe is made upward, and the steel pipe is not rotated during the subsequent conveying process until it is fed into the high-frequency welding machine, so that the steel pipe can accurately enter the high-frequency welding machine. However, this method results in an inflexible conveying process of the steel pipe and is inconvenient for adjusting the production process. For example, for steel pipes temporarily transferred from other production lines, it is necessary to manually adjust the gap of the steel pipe upward before it can be fed into the high-frequency welding machine, which is very inconvenient. In addition, the steel pipe may accidentally rotate during the conveying process due to vibration or other reasons, causing the gap to deviate to one side, affecting the welding. Therefore, it is urgent to improve the current feeding method of the high-frequency welding machine. Summary of the Utility Model

[0004] In view of this, the embodiments of this application provide a feeding mechanism for high-frequency welded pipe welding to solve the technical problems in the prior art that the feeding method of the high-frequency welding machine is not flexible enough and the steel pipe is prone to accidental rotation, resulting in welding failure.

[0005] To achieve the above object, the technical solution adopted in this application is:

[0006] On the one hand, a feeding mechanism for high-frequency welded pipe welding is provided, including:

[0007] A driving roller set, including a driving roller and a driven roller arranged oppositely; the driving roller and the driven roller are used to jointly support the steel pipe and drive the steel pipe to rotate by the driving roller;

[0008] A pushing chain, having a push hook; the pushing chain is arranged below the driving roller set and is arranged along the axial direction of the steel pipe. The pushing chain extends the push hook between the driving roller and the driven roller through rotation and axially pushes one end of the steel pipe; and

[0009] The sensing component includes a pressing structure and a triggering structure. The pressing part of the pressing structure presses the triggering structure against the top of the steel pipe. The triggering structure is provided with a start-stop switch and a telescopic spring pin. The start-stop switch controls the start and stop of the driving roller. The telescopic spring pin abuts against the top of the steel pipe, and when the gap of the steel pipe rotates to face the telescopic spring pin, the telescopic spring pin inserts into the gap of the steel pipe and triggers the start-stop switch to control the driving roller to stop.

[0010] In some embodiments, the pressing structure includes:

[0011] A fixed bracket having a mating portion extending above the driving roller set;

[0012] A mounting plate located between the driving roller set and the mating portion and slidably connected to the mating portion up and down through a vertical guide rod to form the pressing part. An accommodating space for the steel pipe is formed between the mounting plate and the driving roller set; and

[0013] A guide plate provided on one side of the mounting plate and inclined upward. An entrance of the accommodating space is formed between the guide plate and the driving roller set;

[0014] The triggering structure is connected to the mounting plate, and the telescopic spring pin protrudes into the accommodating space. The mounting plate presses down to abut the telescopic spring pin against the top of the steel pipe.

[0015] In some embodiments, the vertical guide rod is provided with a limiting portion above the mating portion, and the limiting portion is in limiting cooperation with the mating portion to limit the maximum distance of the downward sliding of the mounting plate.

[0016] In some embodiments, the number of the vertical guide rods is two.

[0017] In some embodiments, the telescopic spring pin includes:

[0018] A sleeve connected to the pressing part;

[0019] A pin, one end of which is a tip adapted to be inserted into the gap of the steel pipe and the other end of which is a pressing end adapted to press the start-stop switch. The pin slidably penetrates through the sleeve, and the tip protrudes from the sleeve to abut against the top of the steel pipe, and the pressing end protrudes from the sleeve to abut against the start-stop switch; and

[0020] A triggering spring provided in the sleeve and sleeved outside the pin. The triggering spring pushes the pin towards the steel pipe;

[0021] When the steel pipe rotates until the gap faces the tip of the insertion pin, the trigger spring pushes the insertion pin towards the steel pipe, causing the tip of the insertion pin to insert into the gap of the steel pipe. At the same time, the pressing end of the insertion pin releases the start-stop switch to control the active roller to stop.

[0022] In some embodiments, the drive roller set includes multiple pairs of the active rollers and the driven rollers arranged oppositely; each of the active rollers is coaxially arranged and connected to the same drive shaft, the drive shaft is driven by a drive motor, and the drive motor is controlled by the start-stop switch; each of the driven rollers is coaxially arranged.

[0023] In some embodiments, when the outer wall of the steel pipe faces the telescopic spring pin, the steel pipe presses the telescopic spring pin to trigger the start-stop switch to control the active roller to start.

[0024] In some embodiments, the start-stop switch is a normally open switch.

[0025] The beneficial effect of the feeding mechanism for high-frequency welded pipe welding provided by the embodiment of the present application is as follows: Compared with the prior art, the feeding mechanism for high-frequency welded pipe welding in the embodiment of the present application drives the steel pipe to rotate by using a drive roller set. During the rotation of the steel pipe, the pressing structure of the sensing component presses the triggering structure against the top of the steel pipe. When the steel pipe rotates until the gap faces the telescopic spring pin of the triggering structure, the telescopic spring pin inserts into the gap of the steel pipe and triggers the start-stop switch to control the active roller to stop, so that the steel pipe stops at an angle with the gap facing upward; then, the push hook of the pushing chain axially pushes one end of the steel pipe to push the steel pipe into the high-frequency welding machine to complete the feeding; the feeding mechanism for high-frequency welded pipe welding of the present application can automatically adjust the steel pipe to the position with the gap facing upward, enabling any previous conveying method to be used for conveying the steel pipe, greatly improving the flexibility, and also eliminating the need for manual adjustment of the steel pipe angle. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of the feeding mechanism for high-frequency welded pipe welding provided by the embodiment of the present application;

[0028] Figure 2 It is a schematic structural diagram of the drive roller set and the pressing structure of the feeding mechanism for high-frequency welded pipe welding provided by the embodiment of the present application;

[0029] Figure 3 ForFigure 2 Enlarged view at location A in the [specific context];

[0030] Figure 4 is Figure 2 Schematic diagram of the trigger structure in [the relevant system] when the steel pipe has not rotated to a position where the gap is upward.

[0031] Among them, the reference numerals in the figure are as follows:

[0032] 1 - Driving roller group; 11 - Driving roller; 111 - Driving shaft; 112 - Driving motor; 12 - Driven roller; 2 - Pushing chain; 21 - Pushing hook; 3 - Pressing-down structure; 31 - Fixed bracket; 311 - Fitting part; 32 - Mounting plate; 321 - Vertical guide rod; 322 - Limiting part; 323 - Accommodating space; 33 - Guide plate; 331 - Entrance; 4 - Trigger structure; 41 - Start-stop switch; 42 - Telescopic spring pin; 421 - Sleeve; 422 - Inserting pin; 423 - Trigger spring; 5 - Steel pipe; 51 - Gap. Detailed implementation manners

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following further elaborates on this application in conjunction with the attached drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0034] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on that other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to that other element.

[0035] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this application.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, the meanings of "multiple" and "several" are two or more, unless otherwise specifically defined.

[0037] Please refer to... togetherFigures 1 to 4 The feeding mechanism for high-frequency welded pipe welding provided in the embodiment of the present application is now described. A feeding mechanism for high-frequency welded pipe welding comprises:

[0038] The driving roller group includes a driving roller and a driven roller which are arranged opposite to each other; the driving roller and the driven roller are used to support the steel pipe together, and the driving roller drives the steel pipe to rotate;

[0039] A push chain having a push hook; the push chain is arranged below the driving roller group and along the axial direction of the steel pipe, and the push chain extends the push hook between the driving roller and the driven roller through rotation, and pushes one end of the steel pipe along the axial direction; and

[0040] The sensing component includes a pressing structure and a triggering structure. The pressing part of the pressing structure presses the triggering structure against the top of the steel pipe. The triggering structure is provided with a start-stop switch and a telescopic spring pin. The start-stop switch controls the start and stop of the active roller. The telescopic spring pin presses against the top of the steel pipe, and when the steel pipe rotates until the gap is opposite to the telescopic spring pin, the telescopic spring pin is inserted into the gap of the steel pipe and triggers the start-stop switch to control the active roller to stop.

[0041] Compared with the prior art, the high-frequency welded pipe welding feeding mechanism of the embodiment of the present application adopts a driving roller group to drive the steel pipe to rotate. During the rotation of the steel pipe, the downward pressure structure of the sensing component presses the trigger structure against the top of the steel pipe. When the steel pipe rotates to the point where the gap is opposite to the telescopic spring pin of the trigger structure, the telescopic spring pin is inserted into the gap of the steel pipe and triggers the start-stop switch to control the active roller to stop, thereby stopping the steel pipe at an angle where the gap is upward; then, the push hook of the push chain is used to axially push one end of the steel pipe to push the steel pipe into the high-frequency welding machine to complete the loading; the high-frequency welded pipe welding feeding mechanism of the present application can automatically adjust the steel pipe to the point where the gap is upward, so that the front process can use any conveying method to convey the steel pipe, which greatly improves the flexibility and does not require manual adjustment of the steel pipe angle.

[0042] In this embodiment, the driving roller group is used to drive the steel pipe to rotate, and the structure and driving method of the active roller and the driven roller can refer to similar structures on the market.

[0043] The push chain is used to push the steel pipe on the driving roller group axially onto the high-frequency welding machine. Similarly, the specific structure can also refer to similar structures on the market. As an example, the push chain can be composed of two sprockets and an annular chain. The two sprockets stretch the annular chain into a long strip along the axial direction of the steel pipe. The push hook is fixed on the annular chain and protrudes outward by a certain length, so that when the annular chain rotates, the push hook can enter between the active roller and the driven roller and hook one end of the steel pipe; when the push hook hooks one end of the steel pipe, as the annular chain continues to rotate, the push hook gradually pushes the steel pipe axially.

[0044] The sensing component part is an important part of this application. The pressing part of the pressing structure presses the triggering structure tightly against the top of the steel pipe, enabling the triggering structure to be in close contact with the top of the steel pipe. As a result, the telescopic spring pins of the triggering structure can quickly insert into the gap of the steel pipe and trigger the start-stop switch to control the active roller to stop. The telescopic spring pins abut against the top of the steel pipe. When the gap of the steel pipe turns upward, the telescopic spring pins insert into the gap of the steel pipe, and the action of the telescopic spring pins triggers the start-stop switch, causing the start-stop switch to control the active roller to stop. In this embodiment, the stop of the active roller is controlled by the start-stop switch. The start of the active roller can be controlled by the start-stop switch or by other control circuits.

[0045] Please refer to Figure 2 , as a specific implementation of the feeding mechanism for high-frequency welded pipe welding provided by this application, the pressing structure includes:

[0046] A fixed bracket having a mating portion extending above the drive roller set;

[0047] A mounting plate located between the drive roller set and the mating portion and slidably connected to the mating portion up and down through a vertical guide rod to form a pressing part; a receiving space for the steel pipe is formed between the mounting plate and the drive roller set; and

[0048] A guide plate provided on one side of the mounting plate and inclined upward; an inlet for the receiving space is formed between the guide plate and the drive roller set;

[0049] The triggering structure is connected to the mounting plate, and the telescopic spring pins protrude into the receiving space. The mounting plate presses down to abut the telescopic spring pins against the top of the steel pipe.

[0050] In specific implementation, the fixed bracket is in an inverted L shape, and the part extending above the drive roller set is the mating portion. A sliding hole is provided on the mating portion for the vertical guide rod to pass through. The mounting plate is fixed to the lower end of the vertical guide rod. It can be pressed down by a spring sleeved on the vertical guide rod or by the weight of the mounting plate and its components. The guide plate and the mounting plate can be an integral structure, made by bending one side of a rectangular steel plate.

[0051] During use, the steel pipe is added into the receiving space from the inlet; when the steel pipe passes through the inlet, it will push the guide plate upward, thereby driving the mounting plate to move upward, increasing the height of the receiving space and facilitating the entry of the steel pipe into the receiving space. After the steel pipe enters the receiving space, the mounting plate presses down so that the telescopic spring pins protruding into the receiving space abut against the top of the steel pipe.

[0052] Please refer to Figure 2 , as a specific implementation of the feeding mechanism for high-frequency welded pipe welding provided by this application, the vertical guide rod is provided with a limiting portion located above the mating portion, and the limiting portion is in limiting cooperation with the mating portion to limit the maximum distance of the downward sliding of the mounting plate.

[0053] In this embodiment, through the limiting cooperation between the limiting part and the matching part, the maximum downward sliding distance of the mounting plate is restricted, the minimum height of the accommodating space is ensured, which facilitates the entry of the next steel pipe, and avoids the situation that after the steel pipe in the accommodating space is pushed out, the mounting plate directly slides down onto the driving roller set.

[0054] In specific implementation, the limiting part can be a fixing sleeve fixedly sleeved on the vertical guide rod, or a radial screw protruding from the vertical guide rod.

[0055] Please refer to Figure 2 , as a specific implementation manner of the feeding mechanism for high-frequency welded pipe welding provided by this application, the number of vertical guide rods is two.

[0056] In this embodiment, two vertical guide rods are adopted to improve the stability of the up-and-down sliding of the guide plate.

[0057] In specific implementation, the two vertical guide rods are parallel to each other, and limiting parts are arranged on both of the two vertical guide rods.

[0058] Please refer to Figure 3 and Figure 4 , as a specific implementation manner of the feeding mechanism for high-frequency welded pipe welding provided by this application, the telescopic spring pin includes:

[0059] A sleeve, connected to the pressing part;

[0060] A pin, one end of which is a tip adapted to be inserted into the gap of the steel pipe and the other end is a pressing end adapted to press the start-stop switch; the pin slides through the sleeve, and the tip protrudes from the sleeve and abuts against the top of the steel pipe, and the pressing end protrudes from the sleeve and abuts against the start-stop switch; and

[0061] A trigger spring, arranged in the sleeve and sleeved outside the pin; the trigger spring pushes the pin towards the steel pipe;

[0062] When the steel pipe rotates until the gap is opposite to the tip of the pin, the trigger spring pushes the pin towards the steel pipe, so that the tip of the pin is inserted into the gap of the steel pipe, and at the same time, the pressing end of the pin releases the start-stop switch to control the active roller to stop.

[0063] In specific implementation, the sleeve is vertically fixed on the guide plate, and the lower end is aligned with the accommodating space below. An opening is provided at the lower end of the sleeve so that the tip of the pin protrudes downward into the accommodating space, and an opening is provided at the upper end of the sleeve so that the pressing end of the pin abuts upward against the start-stop switch above.

[0064] A limiting ring is arranged around the outer periphery of the middle part of the pin located in the sleeve. The trigger spring is sleeved outside the pin, and one end abuts against the limiting ring of the pin and the other end abuts against the upper end of the sleeve.

[0065] When the steel pipe is placed on the driving roller set, the gap of the steel pipe may face any direction. At this time, the driving roller drives the steel pipe to rotate. When the steel pipe rotates until the gap is upward, the trigger spring pushes the insertion pin downward, causing the tip of the insertion pin to insert downward into the gap of the steel pipe. Since the insertion pin moves downward by a certain distance, the pressing end of the insertion pin will release the start-stop switch, causing the start-stop switch to control the driving roller to stop, so that the steel pipe stops at the angle with the gap upward.

[0066] Please refer to Figure 1 and Figure 2 , as a specific implementation manner of the feeding mechanism for high-frequency welded pipe welding provided by the present application, the driving roller set includes multiple pairs of driving rollers and driven rollers arranged oppositely; each driving roller is coaxially arranged and connected to the same driving shaft, and the driving shaft is driven by a driving motor, and the driving motor is controlled by a start-stop switch; each driven roller is coaxially arranged.

[0067] In this embodiment, multiple pairs of driving rollers and driven rollers respectively support the two ends and the middle position of the steel pipe, so that the steel pipe is horizontal and can rotate stably. Each driving roller is fixed on the same driving shaft, so that one driving motor can drive each driving roller to rotate or stop simultaneously.

[0068] In specific implementation, each driving roller is fixed on the same driving shaft, and one end of the driving shaft is connected to the output shaft of the driving motor through a bevel gear set. The start-stop switch is connected to the controller of the driving motor to control the start and stop of the driving motor. Each driven roller is coaxially arranged, and can be fixed on the same rotating shaft or can respectively adopt independent rotating shafts.

[0069] Please refer to Figure 4 , as a specific implementation manner of the feeding mechanism for high-frequency welded pipe welding provided by the present application, when the steel pipe is in a state where the outer wall is opposite to the telescopic spring pin, the steel pipe presses the telescopic spring pin to trigger the start-stop switch to control the driving roller to start.

[0070] In this embodiment, the rotation and stop of the driving roller are both controlled by the start-stop switch. After the steel pipe enters the accommodating space, the steel pipe is in a state where the outer wall is opposite to the telescopic spring pin, and the steel pipe presses the telescopic spring pin to trigger the start-stop switch to control the driving roller to start; when the steel pipe rotates until the gap is upward, the insertion pin inserts into the gap of the steel pipe and releases the start-stop switch, so that the driving roller stops.

[0071] As a specific implementation manner of the feeding mechanism for high-frequency welded pipe welding provided by the present application, the start-stop switch is a normally open switch.

[0072] In specific implementation, the connection configuration of the start-stop switch and the driving motor is: when the start-stop switch is pressed, it is in a closed state and the driving motor starts; when the start-stop switch is released, it is in a normally open state and the driving motor stops.

[0073] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

1. A feeding mechanism for high frequency welded pipe welding, characterized in that: include: The driving roller group includes a driving roller and a driven roller which are arranged opposite to each other; the driving roller and the driven roller are used to support the steel pipe together, and the driving roller drives the steel pipe to rotate; A push chain having a push hook; the push chain is arranged below the driving roller group and along the axial direction of the steel pipe, and the push chain extends the push hook between the driving roller and the driven roller through rotation, and pushes one end of the steel pipe along the axial direction; and The sensing component includes a pressing structure and a triggering structure, wherein the pressing part of the pressing structure presses the triggering structure against the top of the steel pipe; the triggering structure is provided with a start-stop switch and a telescopic spring pin; the start-stop switch controls the start and stop of the active roller; the telescopic spring pin presses against the top of the steel pipe, and when the steel pipe rotates until the gap is opposite to the telescopic spring pin, the telescopic spring pin is inserted into the gap of the steel pipe and triggers the start-stop switch to control the active roller to stop.

2. The feeding mechanism for high-frequency welded pipe welding according to claim 1, characterized in that: The pressing structure comprises: A fixed bracket having a matching portion extending above the driving roller set; A mounting plate is located between the driving roller group and the matching portion, and is slidably connected with the matching portion up and down through a vertical guide rod to form the pressing portion; a containing space for accommodating the steel pipe is formed between the mounting plate and the driving roller group; and A guide plate is arranged on one side of the mounting plate and is inclined upward; an entrance to the accommodating space is formed between the guide plate and the driving roller group; The trigger structure is connected to the mounting plate, and the telescopic spring pin protrudes into the accommodating space. The mounting plate is pressed down to make the telescopic spring pin contact the top of the steel pipe.

3. The feeding mechanism for high-frequency welded pipe welding according to claim 2, characterized in that: The vertical guide rod is provided with a limiting portion located above the matching portion, and the limiting portion is limitedly matched with the matching portion to limit the maximum distance that the mounting plate slides downward.

4. The feeding mechanism for high-frequency welded pipe welding according to claim 2, characterized in that: The number of the vertical guide rods is two.

5. The feeding mechanism for high frequency welded pipe welding according to claim 1, characterized in that: The telescopic elastic needle comprises: A sleeve connected to the pressing portion; A plug pin, one end of which is a tip suitable for inserting into the gap of the steel pipe, and the other end of which is a pressing end suitable for pressing the start-stop switch; the plug pin is slidably arranged in the sleeve, and the tip extends from the sleeve to abut against the top of the steel pipe, and the pressing end extends from the sleeve to abut against the start-stop switch; and A trigger spring is arranged in the sleeve and sleeved outside the insertion pin; the trigger spring pushes the insertion pin toward the steel pipe; When the steel tube rotates until the gap is opposite to the tip of the pin, the trigger spring pushes the pin toward the steel tube, so that the tip of the pin is inserted into the gap of the steel tube, and at the same time, the pressing end of the pin releases the start-stop switch to control the active roller to stop.

6. The feeding mechanism for high-frequency welded pipe welding according to claim 5, characterized in that: The driving roller group includes a plurality of pairs of relatively arranged active rollers and driven rollers; each of the active rollers is coaxially arranged and connected to the same driving shaft, the driving shaft is driven by a driving motor, and the driving motor is controlled by the start-stop switch; each of the driven rollers is coaxially arranged.

7. The feeding mechanism for high frequency welded pipe welding according to claim 1, characterized in that: When the outer wall of the steel pipe is in a state where it is opposite to the telescopic spring pin, the steel pipe pushes the telescopic spring pin to trigger the start-stop switch to control the active roller to start.

8. The feeding mechanism for high frequency welded pipe welding according to claim 1, characterized in that: The start-stop switch is a normally open switch.

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