Welding device for strip steel continuous annealing production line

Abstract

The utility model relates to the technical field of strip steel welding, and provides a welding device for a strip steel continuous annealing production line, which comprises a lap joint part used for welding two coils of strip steel, at least two welding wheels are horizontally and movably arranged relative to a welding machine body, and the at least two welding wheels are respectively used for rolling and abutting against the upper surface and the lower surface of the lap joint part; the number of the pressing wheels is at least two, the pressing wheels are horizontally and movably arranged relative to the welding machine body, the moving paths of the pressing wheels and the welding wheel are the same, and the at least two pressing wheels are used for being in rolling abutting connection with the upper face and the lower face of the lap joint part on one side of the welding wheel; the welding wheel and the pressing wheel move from one end to the other end in the width direction of the lap joint part after moving. According to the technical scheme, the problem of poor welding in the welding process of the welding wheel in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to strip steel welding technical field, specifically, relate to a kind of welding device for strip steel continuous annealing production line. BACKGROUND

[0002] The welding machine on the continuous annealing line is used to weld the front and rear two coils of strip steel to ensure the continuous production of the process section of the unit, and the auxiliary equipment, the edge shearing machine, punches out a crescent shape at the weld at the edge of the welded strip steel, which is used for cupping test. The current experiment is to detect whether the welding quality is qualified. After the welding machine finishes welding, the strip steel moves forward for a distance, and then reaches the edge shearing machine. After the edge shearing machine punches out the crescent-shaped sample, the sample falls into the waste hopper beside the machine. The sample is taken manually, and the cupping test is completed. If cracks are found along the weld, it means that the welding machine is not firmly welded, and the strip steel needs to be returned, the process parameters of the welding machine need to be adjusted, and the welding needs to be re-performed until the welding quality is qualified. The strip steel can then move forward and enter the next process. Since there is a certain distance between the welding and the edge shearing machine, if the welding quality is poor, the strip steel needs to be moved back and forth. This not only reduces production efficiency and increases labor intensity of workers, but also increases the risk of scratching the strip steel. During the welding process of the welding wheel, there is a problem of poor welding. SUMMARY

[0003] The utility model provides a kind of welding device for strip steel continuous annealing production line, solve the problem of poor welding in the welding process of welding wheel in the related art.

[0004] The technical scheme of the utility model is as follows: a kind of welding device for strip steel continuous annealing production line, for the lap joint of two coils of strip steel, comprising:

[0005] welding wheel, the welding wheel has at least two, and relative the horizontal movement of the welding machine body is arranged, at least two the welding wheel is respectively used to be rolled and contacted with the upper and lower surfaces of the lap joint;

[0006] pressing wheel, the pressing wheel has at least two, and relative the horizontal movement of the welding machine body is arranged, the moving path of the pressing wheel is same with the welding wheel, and one side of the welding wheel, at least two the pressing wheel is respectively used to be rolled and contacted with the upper and lower surfaces of the lap joint;

[0007] The welding wheel and the pressing wheel are moved from one end to the other end of the width direction of the lap joint.

[0008] Optionally, the welding machine body has a guide groove, the guide groove is arranged along the width direction of the lap joint, and further comprising:

[0009] The frame body has a connecting part movably arranged in the guide slot, and the welding wheel and the pressing wheel are rotatably arranged on the frame body.

[0010] Optionally, the welding machine body has a rack part, and further comprises:

[0011] A support base is movably arranged on the welding machine body, and the connecting part is arranged on the support base.

[0012] A gear is rotatably arranged on the support base and is in meshing connection with the rack part.

[0013] A driving motor is movably arranged relative to the welding machine body and is used to drive the gear to rotate.

[0014] Optionally, the guide slot has two, and the two guide slots are respectively arranged on two sides of the frame body.

[0015] The support base has two, and the frame body has two connecting parts, and the two connecting parts are movably arranged in the two guide slots respectively, and the two connecting parts are arranged on the two support bases respectively.

[0016] The gear is rotatably arranged on one of the support bases, and further comprises:

[0017] A connecting rod is arranged at two ends of the connecting rod on the two support bases, so that the two support bases move synchronously.

[0018] Optionally, the guide slot has a first guide segment, a second guide segment and a third guide segment arranged horizontally and communicated in sequence, and the distance from the first guide segment and the third guide segment to the lap joint part is greater than the distance from the second guide segment to the lap joint part.

[0019] Optionally, the first guide segment and the third guide segment have the same height.

[0020] Optionally, the support base has a slot arranged along the height direction, the connecting part is movably arranged in the slot, the length of the slot in the height direction is L, and the height difference between the first guide segment and the third guide segment is H, wherein L≥H.

[0021] Optionally, the connecting part is cylindrical, and the first guide segment, the second guide segment and the third guide segment are arc-shaped transitions.

[0022] Optionally, further comprising:

[0023] A linear driving part is arranged on the frame body.

[0024] The edge punching member is arranged at the driving end of the linear driving member, and is used for cutting the strip steel after moving.

[0025] Optionally, the welding machine body further has a discharging groove and a collecting groove below the lap joint part, the discharging groove has an inclined guide surface, and the collecting groove is located at one end of the discharging groove.

[0026] The working principle and beneficial effects of the utility model are as follows:

[0027] In the utility model, the at least two pressing wheels are horizontally moved relative to the welding machine body, are the same as the moving path of the welding wheel and are located at one side of the welding wheel, and also roll against the upper and lower surfaces of the lap joint part. In the welding process, the pressing wheels apply pressure to the strip steel, assist welding, make the strip steel closely adhere at the welding position, and improve the welding quality. The welding wheel and the pressing wheel are moved from one end to the other end of the width direction of the lap joint part, gradually complete the welding operation of the whole lap joint part, can realize continuous and stable welding, and are suitable for the efficient production requirement of the continuous annealing production line. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above characteristics, technical features, advantages and implementation modes of the utility model will be further described in the following preferred embodiments in a clear and understandable manner combined with the drawings.

[0029] Figure 1 It is a structure schematic view of the first visual angle of the utility model;

[0030] Figure 2 It is a structure schematic view of the second visual angle of the utility model;

[0031] Figure 3 It is a connection structure schematic view of the double-layer welding wheel, the pressing wheel and part of the welding machine body of the utility model;

[0032] Figure 4 It is a connection structure schematic view of the single-layer welding wheel, the pressing wheel and part of the welding machine body of the utility model;

[0033] Figure 5 It is a local connection structure schematic view of the welding wheel and the pressing wheel of the utility model.

[0034] In the drawing: 1, lap joint part; 2, welding machine body; 201, guide groove; 202, rack part; 203, first guide section; 204, second guide section; 205, third guide section; 3, welding wheel; 4, pressing wheel; 5, frame body; 501, connecting part; 6, support seat; 601, notch; 7, gear; 8, driving motor; 9, connecting rod; 10, linear driving member; 11, edge punching member; 12, discharging groove; 1201, inclined guide surface; 13, collecting groove. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, specific implementation manners of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0036] In order to make the drawing simple, only the parts related to the present application are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0037] In this paper, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In addition, in the description of the present application, the terms "first", "second" and the like are only used for distinction and description, and cannot be understood as indicating or implying relative importance.

[0039] Reference Figures 1-5 A welding device for a continuous annealing production line of strip steel is provided, which is used for welding the lap joint part 1 of two coils of strip steel. The welding wheel 3 has at least two, which are arranged horizontally relative to the welding machine body 2, and the at least two welding wheels 3 are respectively used for rolling abutting with the upper and lower surfaces of the lap joint part 1. The pressure wheel 4 has at least two, which are arranged horizontally relative to the welding machine body 2, and the movement path of the pressure wheel 4 is the same as that of the welding wheel 3, and at least two pressure wheels 4 are respectively used for rolling abutting with the upper and lower surfaces of the lap joint part 1. After the welding wheel 3 and the pressure wheel 4 move, they are moved from one end to the other end in the width direction of the lap joint part 1.

[0040] In the embodiment, the at least two welding wheels 3 move horizontally relative to the welding machine body 2 and roll against the upper and lower surfaces of the two overlapping portions 1. In operation, for example, in resistance welding, current passes through the contact area between the welding wheels 3 and the strip steel, and the resistance heat is used to heat the overlapping portions of the strip steel to provide heat for welding. The at least two pressure wheels 4 move horizontally relative to the welding machine body 2, have the same moving path as the welding wheels 3, are located on the side of the welding wheels 3, and also roll against the upper and lower surfaces of the overlapping portions 1. During the welding process, the pressure wheels 4 apply pressure to the strip steel to assist in welding and make the strip steel closely adhere to each other at the welding position, thereby improving the welding quality. The welding wheels 3 and the pressure wheels 4 move from one end to the other end of the width direction of the overlapping portions 1 to gradually complete the welding operation of the entire overlapping portions 1, thereby realizing continuous and stable welding and meeting the high production requirements of the continuous annealing production line.

[0041] Further, the welding machine body 2 has a guide groove 201 arranged along the width direction of the overlapping portions 1, the frame 5 has a connecting portion 501 movably arranged in the guide groove 201, and the welding wheels 3 and the pressure wheels 4 are rotatably arranged on the frame 5.

[0042] In the embodiment, the guide groove 201 is arranged on the welding machine body 2 along the width direction of the overlapping portions 1 to provide a guide path for the movement of the frame 5. The frame 5 moves in the guide groove 201 through the connecting portion 501, and drives the welding wheels 3 and the pressure wheels 4 rotatably arranged thereon to move along the width direction of the overlapping portions 1. The arrangement of the guide groove 201 ensures the accuracy of the moving direction of the welding wheels 3 and the pressure wheels 4, avoids welding defects caused by movement deviation, and thus improves the welding quality. The structure of the frame 5 makes the installation and movement of the welding wheels 3 and the pressure wheels 4 more stable, and facilitates overall operation and control.

[0043] Further, the welding machine body 2 has a rack portion 202, the support seat 6 is movably arranged on the welding machine body 2, the connecting portion 501 is arranged on the support seat 6, the gear 7 is rotatably arranged on the support seat 6 and is in meshing connection with the rack portion 202, and the driving motor 8 is movably arranged relative to the welding machine body 2 and is used to drive the gear 7 to rotate.

[0044] In this embodiment, the rack portion 202 is arranged on the welding machine body 2 and cooperates with the gear 7 to convert the rotation of the gear 7 into linear movement of the support seat 6. The support seat 6 is movably arranged on the welding machine body 2, and the connecting portion 501 is mounted on the support seat 6. The support seat 6 is used to carry the frame body 5 and moves under the rack and pinion transmission of the gear 7. The gear 7 is rotatably arranged on the support seat 6 and is engaged with the rack portion 202. The gear 7 rotates under the driving of the driving motor 8 to drive the movement of the support seat 6. The driving motor 8 is movably arranged relative to the welding machine body 2 to provide rotary power for the gear 7, thereby driving the entire movement mechanism. Specifically, the driving motor 8 can be movably arranged on the welding machine body 2 through a machine base. The rack and pinion transmission of the gear 7 has the characteristics of high transmission accuracy and strong carrying capacity, and can accurately control the movement position and speed of the welding wheel 3 and the pressure wheel 4, meeting the requirements of different welding processes. The arrangement of the driving motor 8 realizes automatic driving, reduces manual intervention, and improves production efficiency and stability of the welding process.

[0045] Further, the guide groove 201 has two, and the two guide grooves 201 are respectively located on both sides of the frame body 5; the support seat 6 has two, and the frame body 5 has two connecting portions 501, the two connecting portions 501 are movably arranged in the two guide grooves 201 respectively, and the two connecting portions 501 are arranged on the two support seats 6 respectively; the gear 7 is rotatably arranged on one of the support seats 6, and the two ends of the connecting rod 9 are arranged on the two support seats 6 respectively, so that the two support seats 6 move synchronously.

[0046] In this embodiment, the two guide grooves 201 are respectively located on both sides of the frame body 5 to provide more stable guidance for the frame body 5 and ensure that the frame body 5 does not tilt or deviate during movement. The two support seats 6 are respectively connected to the two connecting portions 501 of the frame body 5 and are connected by the connecting rod 9, so that the two support seats 6 move synchronously. The two ends of the connecting rod 9 are respectively connected to the two support seats 6 to transmit power and ensure the consistency of the movement of the two support seats 6, thereby ensuring the synchronization of the movement of the two sides of the frame body 5. The design of the two guide grooves 201 and the two support seats 6 further enhances the stability of the movement of the frame body 5, so that the welding wheel 3 and the pressure wheel 4 remain parallel and stable during movement in the entire width direction, improving the uniformity and quality of welding. The synchronous movement of the two support seats 6 is ensured by the connecting rod 9, avoiding welding problems caused by asynchronous movement of the two sides, and improving the reliability of the equipment.

[0047] Further, the guide groove 201 has a horizontally arranged first guide segment 203, a second guide segment 204 and a third guide segment 205 which are sequentially connected, and the distance from the first guide segment 203 and the third guide segment 205 to the lap joint portion 1 is greater than the distance from the second guide segment 204 to the lap joint portion 1.

[0048] In this embodiment, the guide groove 201 is composed of the first guide section 203, the second guide section 204 and the third guide section 205 arranged horizontally and connected in sequence. When the frame body 5 moves in the guide groove 201, in the first guide section 203, the welding wheel 3 and the pressing wheel 4 are in a released state, i.e., not in contact with the strip steel lap joint 1, because the first guide section 203 is far away from the strip steel lap joint 1, and at this time, the welding has not started. As the frame body 5 moves to the second guide section 204, the welding wheel 3 and the pressing wheel 4 roll against the strip steel lap joint 1 and start the welding operation because the second guide section 204 is close to the strip steel lap joint 1. When the welding is completed, the frame body 5 moves to the third guide section 205, and at this time, the welding wheel 3 and the pressing wheel 4 are in a released state again and are not in contact with the strip steel lap joint 1.

[0049] This design realizes the orderly control of the contact state of the welding wheel 3 and the pressing wheel 4 with the strip steel through the layout of the guide groove 201 in different stages. Before and after the start of the welding, the welding wheel 3 and the pressing wheel 4 are separated from the strip steel, which avoids unnecessary wear and possible damage to the strip steel. During the welding process, the second guide section 204 realizes close contact, which ensures the welding quality. This design optimizes the welding process and improves the service life of the equipment and the welding quality.

[0050] Further, the first guide section 203 and the third guide section 205 have the same height.

[0051] In this embodiment, the first guide section 203 and the third guide section 205 have the same height, which helps to improve the stability and repeatability of the welding quality. Because the horizontal positions are consistent, the initial and ending states of the welding wheel 3 and the pressing wheel 4 relative to the strip steel are consistent during the movement of the frame body 5 in these two sections, which reduces potential problems such as uneven welding caused by differences in horizontal positions, further optimizes the welding process, and improves the service life of the equipment and the welding quality.

[0052] Further, the support seat 6 has a slot 601 arranged in the height direction, and the connecting part 501 moves in the slot 601, and the length of the slot 601 in the height direction is L, and the height difference between the first guide section 203 and the third guide section 205 is H, where L≥H.

[0053] In this embodiment, the slot 601 of the support seat 6 is arranged on the support seat 6 in the height direction, and the connecting part 501 moves up and down in the slot 601. When the frame body 5 moves in the guide groove 201 at different heights of the guide sections, the connecting part 501 moves in the slot 601 to adapt to the height difference between the first guide section 203 and the third guide section 205, ensuring that the frame body 5 can always move smoothly in the guide groove 201. This improves the adaptability of the device to the height changes of the guide groove 201, ensures that the welding wheel 3 and the pressing wheel 4 can still work normally when moving in the guide sections at different heights, and avoids device jamming or abnormal welding caused by height changes.

[0054] Further, the connecting part 501 is columnar, and the first guide section 203, the second guide section 204 and the third guide section 205 are arc-shaped in transition.

[0055] In this embodiment, the columnar structure of the columnar connecting part 501 is smoother in contact with the guide groove 201 when moving in the guide groove 201, reducing frictional resistance. The arc-shaped transition between the first guide section 203, the second guide section 204 and the third guide section 205 makes the movement of the rack body 5 between different guide sections more stable, avoiding the impact of the rack body 5 caused by the sudden change at the transition. The design of the columnar connecting part 501 and the arc-shaped transition guide section improves the overall operation stability and reliability of the device, reduces component wear, prolongs the service life of the device, and helps to ensure the welding quality and avoid adverse effects on welding caused by movement impact.

[0056] Further, the linear drive 10 is arranged on the rack body 5, and the edge punching member 11 is arranged at the driving end of the linear drive 10, which is used to cut the strip steel after moving.

[0057] In this embodiment, the linear drive 10 is arranged on the rack body 5 to provide a linear driving force for the edge punching member 11. The edge punching member 11 is installed at the driving end of the linear drive 10 and moves under its driving to cut and sample the welded part of the strip steel, integrating the edge punching function and reducing the additional strip steel cutting equipment, making the production line more compact and improving the production efficiency.

[0058] The upper and lower edge punching members 11 are aligned with each other and can move under the action of the linear drive 10 to cut the strip steel. The edge punching member 11 adopts a crescent shape to cut a crescent-shaped cup convex sample, and then the linear drive 10 (such as a hydraulic cylinder) resets.

[0059] Further, the welding machine body 2 further has a discharging groove 12 and a collecting groove 13, which are located below the lap joint part 1. The discharging groove 12 has an inclined guide surface 1201, and the collecting groove 13 is located at one end of the discharging groove 12. The inclined guide surface 1201 is inclined towards the collecting groove 13.

[0060] In this embodiment, the discharging groove 12 is located below the lap joint part 1 and has an inclined guide surface 1201. The crescent-shaped cup convex sample generated during the edge punching process falls on the inclined guide surface 1201 and slides down along the inclined guide surface 1201 by gravity. The collecting groove 13 is located at one end of the discharging groove 12 to receive the crescent-shaped cup convex sample that slides down from the discharging groove 12, realizing the collection of the crescent-shaped cup convex sample. The automatic collection of the crescent-shaped cup convex sample improves the automation degree and production efficiency of the production process.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A welding device for a continuous strip annealing line, characterized in that, The application relates to a lap joint (1) for welding two strips of steel, comprising: a welding machine body (2); welding wheels (3) arranged to move horizontally relative to the welding machine body (2), the welding wheels (3) being arranged to roll against the upper and lower surfaces of the lap joint (1); pressing wheels (4) arranged to move horizontally relative to the welding machine body (2), the pressing wheels (4) being arranged to roll against the upper and lower surfaces of the lap joint (1) and having the same moving path as the welding wheels (3); the welding wheels (3) and the pressing wheels (4) are arranged to move from one end to the other end of the lap joint (1) in the width direction.

2. The welding device for a continuous strip annealing line according to claim 1, characterized in that, The welding machine body (2) is provided with guide grooves (201) arranged along the width direction of the lap joint (1), and further comprising: a frame body (5) provided with connecting portions (501) arranged to move in the guide grooves (201), the welding wheels (3) and the pressing wheels (4) being arranged to rotate on the frame body (5).

3. The welding device for a continuous strip annealing line according to claim 2, characterized in that, The welding machine body (2) is provided with a rack portion (202), and further comprising: supporting seats (6) arranged to move on the welding machine body (2), the connecting portions (501) being arranged on the supporting seats (6); a gear wheel (7) arranged to rotate on the supporting seats (6) and connected with the rack portion (202); a driving motor (8) arranged to move relative to the welding machine body (2) and used to drive the gear wheel (7) to rotate.

4. The welding device for a continuous strip annealing line according to claim 3, characterized in that The guide grooves (201) are two, and are arranged on the two sides of the frame body (5); The supporting seats (6) are two, and the frame body (5) is provided with two connecting portions (501), the two connecting portions (501) being arranged to move in the two guide grooves (201) respectively and being arranged on the two supporting seats (6) respectively; The gear wheel (7) is arranged to rotate on one of the supporting seats (6), and further comprising: a connecting rod (9) arranged at the two ends of the two supporting seats (6) so that the two supporting seats (6) move synchronously.

5. The welding device for a continuous strip annealing line according to claim 4, characterized in that, The guide grooves (201) are provided with a first guide section (203), a second guide section (204) and a third guide section (205) arranged horizontally and connected in sequence, the vertical distance from the first guide section (203) and the third guide section (205) to the lap joint (1) being greater than the vertical distance from the second guide section (204) to the lap joint (1).

6. The welding device for a strip steel continuous annealing line according to claim 5, characterized by The first guide section (203) and the third guide section (205) have the same height.

7. The welding device for a continuous strip annealing line according to claim 6, characterized in that The support seat (6) has a notch (601) arranged along the height direction, the connecting part (501) is movably arranged in the guide groove (201) and the notch (601), the length of the notch (601) in the height direction is L, and the height difference between the first guide section (203) and the third guide section (205) is H, wherein L≥H.

8. The welding device for a continuous strip annealing line according to claim 7, characterized in that The connecting part (501) is cylindrical, and the first guide section (203), the second guide section (204) and the third guide section (205) are arc-shaped transitions.

9. The welding device for a continuous strip annealing line according to claim 2, characterized in that, Further comprising: A linear drive (10) arranged on the frame body (5); An edge punching member (11) arranged at the driving end of the linear drive (10), which is used for cutting the strip steel after moving.

10. The welding device for a continuous strip annealing line according to claim 1, characterized in that, The welding machine body (2) further has a discharging groove (12) and a collecting groove (13) located below the lap joint part (1), the discharging groove (12) has an inclined guide surface (1201), and the collecting groove (13) is located at one end of the discharging groove (12), and the inclined guide surface (1201) is inclined towards the collecting groove (13).

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