Narrow lap welding machine

Abstract

The utility model discloses a narrow lap welding machine, and relates to the technical field of annealing unit production, the narrow lap welding machine comprises a body and a blowing device, the body is provided with two clamps used for clamping a previous coil of strip steel and a next coil of strip steel respectively, and the blowing device comprises an air supply pipe fixed to the clamps; the purging pipes are sequentially arranged at intervals in the width direction of the strip steel, one end of each purging pipe is connected with the air supply pipe, the other end of each purging pipe faces a welding seam between the previous strip steel coil and the next strip steel coil, and each purging pipe is provided with a stop valve; and the air source assembly is connected with the air supply pipe, and the air source assembly is used for providing an air source for the purging pipe. The air supply pipe is arranged to provide an air source, and then air is blown to the weld joint of the strip steel through the blowing pipe, so that foreign matters such as welding slag and dust which fall off and are adhered to the weld joint due to poor welding quality at the weld joint can be removed at any time, and the defects of batch marks and the like caused by the fact that the foreign matters fall on the surface of the strip steel and are adhered to a furnace roller along with the strip steel are avoided.

Description

Technical Field

[0001] The present application belongs to the technical field of annealing unit production, and specifically relates to a narrow lap welding machine. Background Art

[0002] The welding machine is used to weld the two rolls of strip steel together, so as to achieve the continuity of the production operation of the continuous annealing unit. Therefore, after the inlet shear, the unit is equipped with a welding machine. In daily welding operations, after the welding is completed, if the welding quality is not good, it will cause too much welding slag and dust foreign matter at the weld to adhere to the weld position easily and cannot be cleaned manually. Foreign matter is easy to fall on the strip during production. If it is brought into the furnace area or the looper roller, it will cause damage to the looper roller at the least, and finally be copied to the surface of the strip to cause defects such as batch rubbing. In addition, since the continuous annealing and galvanizing units usually operate at high speeds, it is extremely difficult to handle and there are great safety hazards. Summary of the invention

[0003] The purpose of the present application is to provide a narrow lap welder, aiming to at least to some extent solve the technical problem of how to deal with the presence of a lot of dust and foreign matter in the weld after the welder welds the strip steel.

[0004] In order to solve the above technical problems, this application adopts the following technical solutions:

[0005] A first aspect of an embodiment of the present application provides a narrow lap welder for welding steel strips, comprising a main body and a purging device, wherein the main body is provided with two clamps for clamping a preceding roll of steel strip and a succeeding roll of steel strip, respectively, and the purging device comprises: an air supply pipe fixed to the clamp; a plurality of purging pipes arranged in sequence and at intervals along the width direction of the steel strip, one end of the purging pipe being connected to the air supply pipe, and the other end being directed toward the weld between the preceding roll of steel strip and the succeeding roll of steel strip, and each of the purging pipes being provided with a shut-off valve; and an air source assembly connected to the air supply pipe, the air source assembly being used to provide an air source to the purging pipe.

[0006] In some embodiments, two air supply pipes are provided, and the two air supply pipes are respectively provided at the upper ends of the two clamps, and each clamp is provided with a plurality of purge pipes.

[0007] In some embodiments, the air supply pipe is a hollow pipe, one end of the air supply pipe is connected to the air source assembly, the other end of the air supply pipe is connected to one of the purge pipes, and at least two purge pipes are connected to the middle of the air supply pipe.

[0008] In some embodiments, the narrow lap welder includes a fixing plate, and the purge tube is fixed to the outer surface of the clamp by at least one fixing plate.

[0009] In some embodiments, the fixing piece includes: an arc portion for clamping the purging pipe; two connecting portions respectively connected to two ends of the arc portion, and round holes are provided on the connecting portions, and the fixing piece is fixed to the clamp by screws passing through the round holes.

[0010] In some embodiments, the gas source assembly includes an air pump, and an air outlet of the air pump is connected to the air supply pipe.

[0011] In some embodiments, the stop valve is an electric control valve, and the narrow lap welding machine further includes: an induction assembly for sensing the position of the welding wheels of the narrow lap welding machine; a controller, and both the electric control valve and the induction assembly are electrically connected to the controller.

[0012] In some embodiments, the induction assembly includes a plurality of laser sensors, and each laser sensor is respectively arranged above each purging pipe. After the laser sensor senses that the welding wheel has passed, the purging pipe is controlled to start purging through the controller.

[0013] In some embodiments, the air supply pipe is a copper pipe.

[0014] In some embodiments, a slope is provided on a side of the clamp close to the strip steel, a purging end of the purging pipe extends to the slope, and a gap is reserved between the purging pipe and a side of the slope close to the strip steel.

[0015] It can be seen from the above technical solutions that the present application has at least the following advantages and positive effects:

[0016] In a narrow lap welding machine of the present application, by providing a purging device, foreign matters such as welding slag and dust that fall and adhere to the weld position due to poor welding quality at the weld can be purged at any time, avoiding defects such as batch indentations caused by the foreign matters falling on the surface of the strip steel and then adhering to the furnace rolls along with the strip steel. By remotely controlling the purging, potential safety hazards brought by on-line close cleaning by personnel are avoided, and the protective cover structure is simple, easy to apply, economical and practical, and convenient for operation, and has strong popularization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of a narrow lap welding machine in an embodiment of the present application.

[0019] The description of the reference numerals is as follows: 1. Body; 11. Clamp; 12. Welding wheel; 2. Blowing pipe; 3. Gas supply pipe; 4. Fixed piece; 5. Air pump; 6. Laser sensor. Detailed implementation manners

[0020] In order to enable those skilled in the art in the technical field to which the present application pertains to more clearly understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0021] Please refer to Figure 1 。

[0022] Figure 1 is a structural schematic diagram of a narrow lap welding machine in an embodiment of the present application. As shown in the figure, the device is used for welding strip steel and includes a body 1 and a purging device. Two clamps 11 for clamping the previous coil of strip steel and the subsequent coil of strip steel are arranged on the body 1. The purging device includes: a gas supply pipe 3 fixed to the clamp 11; a plurality of purging pipes 2 arranged at intervals in sequence along the width direction of the strip steel. One end of the purging pipe 2 is connected to the gas supply pipe 3, and the other end faces the weld between the previous coil of strip steel and the subsequent coil of strip steel. A stop valve is arranged on each purging pipe 2; a gas source assembly is connected to the gas supply pipe 3, and the gas source assembly is used to supply gas source to the purging pipe 2. By arranging the purging device, foreign matters such as welding slag and dust that fall and adhere to the weld position due to poor welding quality at the weld can be removed at any time, avoiding defects such as batch indentations caused by foreign matters falling on the surface of the strip steel and then adhering to the furnace roll along with the strip steel. By remotely controlling the purging, the potential safety hazards brought by on-site close cleaning by personnel are avoided, and the protective sleeve structure is simple, easy to use, economical and practical, and conducive to operation, and has strong promotion value.

[0023] In some embodiments, two gas supply pipes 3 are provided, and the two gas supply pipes 3 are respectively arranged on both sides of the weld of the welding machine 1, and each clamp is provided with a plurality of the purging pipes.

[0024] In some embodiments, the gas supply pipe 3 is a hollow pipe. One end of the gas supply pipe 3 is connected to the gas source assembly, the other end of the gas supply pipe is connected to one purging pipe 2, and at least two purging pipes 2 are connected to the middle of the gas supply pipe. Specifically, the purging pipe 2 and the gas supply pipe 3 are vertically arranged.

[0025] In some embodiments, the purging pipe 2 is a hollow metal pipe.

[0026] In some embodiments, the narrow lap welder includes a fixing piece 4, and the purging pipe 2 is fixed to the outer surface of the clamp 11 through at least one fixing piece 4. Specifically, two fixing pieces are provided on each purging pipe 2.

[0027] In some embodiments, the fixing piece 4 includes: an arc portion for clamping the purging pipe 2; two connecting portions respectively connected to two ends of the arc portion, and round holes are provided on the connecting portions. The fixing piece 4 is fixed to the clamp 11 by screws passing through the round holes.

[0028] In some embodiments, the gas source assembly includes an air pump 5, and the air outlet of the air pump 5 is connected to the air supply pipe 3. Specifically, the air pump 5 is a 7 kg compressed air pump 5.

[0029] In some embodiments, the purging pipe 2 is a copper pipe, and the air supply pipe 3 is a copper pipe; they are durable.

[0030] In some embodiments, the stop valve is an electric control valve, and the narrow lap welder further includes: an induction assembly for sensing the position of the welding wheel 12 of the narrow lap welder; a controller, and both the electric control valve and the induction assembly are electrically connected to the controller.

[0031] In some embodiments, the induction assembly includes a plurality of laser sensors 6, and each laser sensor 6 is respectively arranged above each purging pipe 2. When the laser sensor senses that the welding wheel 12 has passed by, the purging pipe 2 is controlled to start purging through the controller.

[0032] In other embodiments, the induction assembly can also be a camera, which visually captures the position of the welding wheel through the camera, and then controls the opening and closing of the electric control valve on each purging pipe through the controller.

[0033] In some embodiments, the air supply pipe 3 is a copper pipe.

[0034] In some embodiments, a slope is provided on the side of the clamp 11 close to the strip steel, the purging end of the purging pipe 2 extends to the slope, and a gap is reserved between the purging pipe 2 and the side of the slope close to the strip steel.

[0035] In some embodiments, the working method of the narrow lap welder is to clamp the previous coil of strip steel and the next coil of strip steel through the clamp 11, fix them and then perform welding through the welding wheel 12, sense the position of the welding wheel 12 through the induction assembly, and then control the purging pipe 2 to perform purging.

[0036] From the above technical solutions, it can be seen that the present application has at least the following advantages and positive effects:

[0037] A narrow lap welding machine in the present application can, by setting up a purging device, always purge foreign matters such as welding slag and dust that fall and adhere to the weld position due to poor welding quality at the weld, avoiding defects such as batch indentations caused by foreign matters falling on the strip surface and then adhering to the furnace rolls along with the strip. By remotely controlling the purging, potential safety hazards brought by on-line close cleaning of personnel are avoided. Moreover, the protective cover has a simple structure, is simple and applicable, economical and practical, and is conducive to operation, having strong promotion value.

[0038] Unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may also include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0039] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present 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 the present application.

[0040] In the present application, unless otherwise clearly specified and defined, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0041] In addition, in the present application, descriptions such as "first", "second", etc. are only for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise clearly specifically defined.

[0042] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A narrow lap welder for welding strip steel, characterized in that: It includes a body and a purge device, the body is provided with two clamps for clamping the previous roll of steel strip and the next roll of steel strip respectively, and the purge device includes: an air supply pipe fixed to the clamp; A plurality of purge pipes are sequentially arranged at intervals along the width direction of the strip steel, one end of each purge pipe is connected to the air supply pipe, and the other end faces the weld between the previous roll of strip steel and the next roll of strip steel, and each purge pipe is provided with a stop valve; An air source component is connected to the air supply pipe, and the air source component is used to provide an air source to the purge pipe.

2. The narrow lap welding machine according to claim 1, characterized in that: Two air supply pipes are provided, and the two air supply pipes are respectively provided at the upper ends of the two clamps, and each clamp is provided with a plurality of purge pipes.

3. The narrow lap welding machine according to claim 2, characterized in that: The air supply pipe is a hollow pipe, one end of the air supply pipe is connected to the air source assembly, the other end of the air supply pipe is connected to one of the purge pipes, and at least two purge pipes are connected to the middle of the air supply pipe.

4. The narrow lap welding machine according to claim 1, characterized in that: The narrow lap welder comprises a fixing plate, and the purge pipe is fixed to the outer surface of the clamp through at least one fixing plate.

5. The narrow lap welding machine according to claim 4, characterized in that: The fixing plate comprises: An arc-shaped portion, used for clamping the purge pipe; Two connecting parts are respectively connected to the two ends of the arc-shaped part. The connecting parts are provided with round holes. The fixing plate is fixed to the clamp by screws passing through the round holes.

6. The narrow lap welding machine according to claim 1, characterized in that: The air source component comprises an air pump, and the air outlet of the air pump is connected to the air supply pipe.

7. The narrow lap welding machine according to claim 1, characterized in that: The stop valve is an electrically controlled valve, and the narrow lap welder further comprises: A sensing component, used for sensing the position of the welding wheel of the narrow lap welding machine; The controller, the electric control valve and the sensing component are all electrically connected to the controller.

8. The narrow lap welding machine according to claim 7, characterized in that: The sensing component includes a plurality of laser sensors, each of which is disposed above each purging tube. When the laser sensor senses the passing of the welding wheel, the controller controls the purging tube to start purging.

9. The narrow lap welding machine according to claim 1, characterized in that: The gas supply pipe is a copper pipe.

10. The narrow lap welding machine according to claim 1, characterized in that: A slope is arranged on one side of the clamp close to the steel strip, and a purge end of the purge pipe extends to the slope, and a gap is reserved between the purge pipe and the side of the slope close to the steel strip.

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