Strip steel centering device and welding equipment

Abstract

The utility model provides a strip steel centering device and welding equipment, and the strip steel centering device comprises a guide part which is provided with a matching side, and the matching side is provided with a sliding groove; the limiting part comprises a first limiting piece and a second limiting piece, and the first limiting piece and the second limiting piece are both arranged on the matching side and used for sliding in the extending direction of the sliding groove, so that one of the first limiting piece and the second limiting piece can be close to or away from the other one; gaps exist between the first limiting piece and the matching side and between the second limiting piece and the matching side; the first limiting piece and the second limiting piece are each provided with the corresponding protruding part, and at least part of each protruding part is located in the corresponding sliding groove. According to the strip steel centering device, the clamping stagnation probability of the defect part of the strip steel can be reduced, the centering accuracy of the to-be-centered strip steel can be improved, the failure rate of the centering device can be reduced, and the production efficiency can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of welding technology, and in particular to a strip centering device and welding equipment. Background Art

[0002] The centering accuracy of the welding machine is an important indicator to ensure the smooth and continuous operation of the cold rolling production line. Generally, the centering accuracy is required to be controlled within a certain range. During the strip centering process, if some strips have plate defects, they are easily stuck on the centering device, resulting in the inability of the centering device to accurately center the strip, which seriously affects the welding accuracy and causes the strip to deviate from the preset trajectory of the subsequent process, and even causes the rolling mill to stop for repairs due to strip breakage, seriously affecting the production process. Utility Model Content

[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, a first aspect of the present disclosure provides a strip centering device;

[0005] A second aspect of the present disclosure provides a welding device.

[0006] In view of this, according to a first aspect of an embodiment of the present disclosure, a strip centering device is proposed, comprising:

[0007] The guide part has a matching side, and a slide groove is formed on the matching side;

[0008] The limiting part includes a first limiting member and a second limiting member, both of which are arranged on the matching side and are used to slide along the extending direction of the slide slot, so that one of the first limiting member and the second limiting member can be close to or away from the other, and there is a gap between the first limiting member and the second limiting member and the matching side;

[0009] The first limiting member and the second limiting member are both provided with a protrusion, and at least part of the protrusion is located in the slide groove.

[0010] In a feasible implementation manner, the protrusion is clearance-matched with the slide groove.

[0011] In a feasible implementation manner, the guide portion includes:

[0012] a first tray having a mating side;

[0013] A second support plate is disposed on one side of the first support plate, and the second support plate is arranged along the extension direction of the slide groove;

[0014] A third support plate is arranged on the other side of the first support plate, and the third support plate is arranged along the extension direction of the slide groove;

[0015] Wherein, a side of the second supporting plate close to the limiting portion and a side of the third supporting plate close to the limiting portion both protrude from the matching side.

[0016] In a feasible implementation manner, the second support plate and the third support plate are both detachably connected to the first support plate.

[0017] In a feasible embodiment, the first support plate is made of plastic material; and / or

[0018] The second support plate and the third support plate are both made of copper material.

[0019] In a feasible implementation manner, the gap width between the first limiting member and the mating side is less than or equal to 3 mm and greater than or equal to 1 mm; and / or

[0020] The width of the gap between the second limiting member and the matching side is less than or equal to 3 mm and greater than or equal to 1 mm.

[0021] In a feasible implementation, it also includes:

[0022] a first driving unit;

[0023] The transmission part is connected to the first driving part, and the first limiting member and the second limiting member are both connected to the transmission part. When the first driving part is running, the transmission part is used to drive the first limiting member and the second limiting member to move closer to or away from each other.

[0024] In a feasible implementation, it also includes:

[0025] A second driving part, connected to the first limiting member, and used to drive the first limiting member to slide along the extending direction of the sliding groove;

[0026] A third driving part, connected to the second limiting member, and used to drive the first limiting member to slide along the extending direction of the sliding groove;

[0027] Wherein, the second driving unit and the third driving unit can both operate independently.

[0028] In a feasible implementation manner, the protrusion provided on the first limiting member and the first limiting member are an integrated structure; and / or

[0029] The protrusion arranged on the second limiting member and the second limiting member are an integrated structure.

[0030] According to a second aspect of an embodiment of the present disclosure, a welding device is provided, comprising:

[0031] A strip centering device as proposed in any one of the first aspects above.

[0032] Compared with the prior art, the present disclosure includes at least the following beneficial effects: a strip steel centering device provided in an embodiment of the present disclosure includes: a guiding portion, having a mating side, the mating side being provided with a slide groove; a limiting portion, including a first limiting piece and a second limiting piece, the first limiting piece and the second limiting piece are both arranged on the mating side and are used to slide along the extension direction of the slide groove, so that one of the first limiting piece and the second limiting piece can be close to or away from the other, and there is a gap between the first limiting piece and the second limiting piece and the mating side; a raised portion, the first limiting piece and the second limiting piece are both provided with the raised portion, and at least part of the raised portion is located in the slide groove. The strip centering device provided in the embodiment of the present invention is based on the above-mentioned setting. While the limiting part can limit the strip to be centered, the raised part can further limit the strip to be centered, blocking the strip to be centered from entering the gap between the first limiting part and the second limiting part and the mating side, thereby avoiding the strip to be centered from being stuck in the above-mentioned gap. At the same time, the setting of the raised part can change the direction of the gap between the first limiting part or the second limiting part and the mating side, and can separate the long straight gap between the first limiting part or the second limiting part and the mating side, avoiding the existence of a long gap along the same direction, thereby further reducing the probability of the strip to be centered entering the gap, thereby further avoiding the strip to be centered from being stuck in the gap, and can improve the centering accuracy of the strip to be centered, which is beneficial to reducing the failure rate of the centering device and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present disclosure. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0034] Figure 1 A schematic structural diagram of a strip centering device according to an embodiment of the present disclosure;

[0035] Figure 2 A schematic structural diagram of a first support plate and a limiting portion of a strip centering device according to an embodiment of the present invention.

[0036] Figure 3 A schematic structural diagram of a strip centering device according to an embodiment of the present disclosure from another perspective;

[0037] Figure 4 A schematic application scenario diagram of a strip steel centering device according to an embodiment of the present disclosure;

[0038] in, Figures 1 to 4 The corresponding relationship between the reference numerals and the component names is as follows:

[0039] Guide portion 100, first support plate 110, matching side 111, slide groove 112, second support plate 120, third support plate 130;

[0040] The limiting part 200, the first limiting member 210, and the second limiting member 220;

[0041] The raised portion 310 . DETAILED DESCRIPTION

[0042] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0043] like Figures 1 to 3 As shown, according to the first aspect of the embodiment of the present disclosure, a strip centering device is proposed, including: a guide portion 100, having a mating side 111, and a slide groove 112 is opened on the mating side 111; a limiting portion 200, including a first limiting member 210 and a second limiting member 220, the first limiting member 210 and the second limiting member 220 are both arranged on the mating side 111 and are used to slide along the extension direction of the slide groove 112, so that one of the first limiting member 210 and the second limiting member 220 can approach or move away from the other, and there is a gap between the first limiting member 210 and the second limiting member 220 and the mating side 111; a protrusion 310, the first limiting member 210 and the second limiting member 220 are both provided with a protrusion 310, and at least a part of the protrusion 310 is located in the slide groove 112.

[0044] The strip centering device provided according to the embodiment of the present disclosure includes a guide portion 100, a limiting portion 200 and a protrusion 310, wherein the limiting portion 200 includes a first limiting member 210 and a second limiting member 220, the first limiting member and the second limiting member 220 are arranged on the matching side 111 of the guide portion, the first limiting member 210 and the second limiting member 220 are both provided with a protrusion 310, and at least a part of the protrusion 310 is inside the slide groove 112 of the guide portion, and along the extension direction of the slide groove 112, the protrusion 310 can follow The first limit piece 210 and the second limit piece 220 slide in the slide groove 112, and the first limit piece 210 and the second limit piece 220 can move closer to or farther away from each other by sliding. The relative sliding between the first limit piece 210 and the second limit piece 220 can push the strip to be centered so that the strip to be centered is pushed to a preset centering position, and under the guiding effect of the guide part on the limit part 200 and the protrusion 310, the centering accuracy of the first limit piece 210 and the second limit piece 220 during the centering process can be guaranteed. A gap is left between the first limiting member 210 and the second limiting member 220 and the mating side 111, which can avoid the friction between the first limiting member 210 and the second limiting member 220 and the mating side 111 during the sliding process, thereby reducing the loss of the first limiting member 210 and the second limiting member 220 during the sliding process, which is conducive to smoother sliding of the first limiting member 210 and the second limiting member 220. The raised portion 310 can further limit the strip to be aligned, and prevent the strip to be aligned from entering the first limiting member 210 and the second limiting member 220 and the mating side 111. At the same time, the arrangement of the raised portion 310 can change the direction of the gap between the first limiting member 210 or the second limiting member 200 and the mating side 111, and can separate the long straight gap between the first limiting member 210 or the second limiting member 200 and the mating side 111, so as to avoid the aforementioned gap extending too long in the same direction, thereby further reducing the probability of the strip to be aligned entering the gap, thereby further avoiding the strip to be aligned being stuck in the gap.

[0045] It should be noted that if Figure 4As shown, the preset centering position refers to the position of the center line of the production line; the above-mentioned centering refers to correcting the center line of the strip to be centered so that the center line of the strip to be centered coincides with the center line of the production line. In actual applications, the strip to be centered is arranged on the mating side 111, and along the extension direction of the slide groove 112, the strip to be centered can be set between the first limit member 210 and the second limit member 220, that is, the first limit member 210 and the second limit member 220 limit the strip to be centered on both sides of the strip, and the first limit member 210 and the second limit member 220 slide towards each other. During the sliding process, the first limit member 210 and the second limit member 220 will push the strip to be centered, change the position of the strip to be centered, and correct the center line of the strip to be centered so that the center line of the strip to be centered coincides with the center line of the production line, thereby realizing the movement of the strip to be centered to the preset centering position, so that the centered strip can meet the welding accuracy requirements.

[0046] In the conventional technology, the strip centering device only has a limit part 200 and a support plate. Since some strips have defects in plate shape, such as edge wave defects, during the centering process, the edge of the strip to be centered is easily stuck in the gap between the limit part 200 and the support plate, resulting in the inability of the centering device to accurately center the strip, which seriously affects the welding accuracy and may cause the strip to deviate from the preset trajectory of subsequent processes, and even cause the rolling mill to stop for repairs due to broken strips, seriously affecting the production process. Compared with the strip centering device in the traditional technology, the strip centering device proposed in the embodiment of the present invention is based on the above-mentioned setting. While the limiting part 200 can limit the strip to be centered, the protrusion 310 can further limit the strip to be centered, blocking the strip to be centered from entering the gap between the first limiting part 210 and the second limiting part 220 and the mating side 111, thereby avoiding the strip to be centered from being stuck in the above-mentioned gap. At the same time, the setting of the protrusion 310 can change the direction of the gap between the first limiting part 210 or the second limiting part 200 and the mating side 111, and can separate the long straight gap between the first limiting part 210 or the second limiting part 200 and the mating side 111 to avoid the existence of a long gap in the same direction, thereby further reducing the probability of the strip to be centered entering the gap, thereby further avoiding the strip to be centered from being stuck in the gap, and can improve the centering accuracy of the strip to be centered, which is beneficial to reducing the failure rate of the centering device and improving production efficiency.

[0047] In some examples, such as Figure 1 As shown, the protrusion 310 is loosely matched with the slide groove 112 .

[0048] In the above technical solution, the protrusion 310 and the slide groove 112 are clearance-matched so that there is a gap between the protrusion 310 and the slide groove 112, which can avoid the protrusion 310 from rubbing against the slide groove 112 during the sliding process, and can avoid the protrusion 310 from causing wear during the sliding process. At the same time, it can also improve the smoothness of the sliding process of the protrusion 310, which is more conducive to improving the working efficiency of the strip centering device.

[0049] In some examples, such as Figure 1 and Figure 3 As shown, the guide portion 100 includes: a first support plate 110, having a mating side 111; a second support plate 120, which is arranged on one side of the first support plate 110, and the second support plate 120 is arranged along the extension direction of the slide groove 112; a third support plate 130, which is arranged on the other side of the first support plate 110, and the third support plate 130 is arranged along the extension direction of the slide groove 112; wherein, the side of the second support plate 120 close to the limiting portion 200 and the side of the third support plate 130 close to the limiting portion 200 both protrude from the mating side 111.

[0050] In the above technical solution, the guide part 100 includes a first support plate 110, a second support plate 120 and a third support plate 130. The second support plate 120 and the third support plate 130 arranged along the extension direction of the slide groove 112 are respectively arranged on both sides of the first support plate 110, and the second support plate 120 and the third support plate 130 are both protruded from the matching side of the first support plate. Such an arrangement enables the second support plate 120 and the third support plate 130 to directly contact the strip to be centered, providing support for the strip to be centered. At the same time, the protruding arrangement of the second support plate 120 and the third support plate 130 enables the third support plate 120 and the third support plate 130 to directly contact the strip to be centered. The direction of the gap between the second support plate 120 and the third support plate 130 and the limiting portion 200 is different from the direction of the gap between the first support plate 110 and the limiting portion 200, thereby avoiding the existence of a long straight gap between the guide portion 100 and the limiting portion 200 along the same direction, and reducing the probability of the strip to be centered entering the gap between the guide portion 100 and the limiting portion 200, thereby avoiding the strip to be centered being stuck in the gap between the guide portion 100 and the limiting portion 200, and thus improving the centering accuracy of the strip to be centered, which is beneficial to reducing the failure rate of the centering device and improving production efficiency.

[0051] In some examples, such as Figure 1 and Figure 3 As shown, the second support plate 120 and the third support plate 130 are both detachably connected to the first support plate 110 .

[0052] In the above technical solution, the second pallet 120 and the third pallet 130 are detachably connected to the first pallet 110. It can be understood that the second pallet 120 and the third pallet 130 of the guide part 100 are directly supported on the strip to be aligned. Compared with the first pallet 110, the wear of the second pallet 120 and the third pallet 130 is more severe. When the second pallet 120 or the third pallet 130 is worn to a certain extent, the second pallet 120 or the third pallet 130 can be directly replaced, which can avoid the overall replacement of the guide part 100 and is more conducive to later maintenance.

[0053] In some examples, the first support plate 110 is made of a plastic material; and / or the second support plate 120 and the third support plate 130 are both made of a copper material.

[0054] In the above technical solution, the first support plate 110 can be made of plastic material, such as phenolic plastic, which has high mechanical strength, heat resistance and corrosion resistance, and is more conducive to the long-term use of the first support plate 110.

[0055] In the above technical solution, the second support plate 120 and the third support plate 130 are both made of copper material, which can provide sufficient supporting force for the strip to be centered. At the same time, compared with the strip to be centered, the hardness of the copper material is lower, which can prevent the strip to be centered from being worn when contacting the second support plate 120 and the third support plate 130, thereby protecting the strip to be centered and helping to ensure product quality.

[0056] It is understandable that the first support plate 110 may be made of plastic material, while the second support plate 120 and the third support plate 130 may be made of copper material.

[0057] In some examples, the gap width between the first limit member 210 and the mating side 111 is less than or equal to 3 mm and greater than or equal to 1 mm; and / or the gap width between the second limit member 220 and the mating side 111 is less than or equal to 3 mm and greater than or equal to 1 mm.

[0058] In the above technical solution, the gap width between the first limit member 210 and the mating side 111 can be set to be less than or equal to 3 mm, so that the width of the aforementioned gap can be smaller, weakening the structural passability of the aforementioned gap, and further preventing the strip to be centered from entering the gap between the first limit member 210 and the mating side 111, which is more conducive to reducing the probability of the strip to be centered. At the same time, it can prevent a large amount of dust or sludge from entering the aforementioned gap, which is conducive to ensuring the relative sliding smoothness between the first limit member 210 and the mating side 111, and avoiding the first limit member 210 and the mating side 111 from getting stuck or wearing; and the gap width between the first limit member 210 and the mating side 111 can be set to be greater than or equal to 1 mm, so as to avoid the width of the aforementioned gap being too small, and further reducing the probability of the first limit member 210 contacting the mating side 111, which is conducive to further reducing the wear of the mating side 111 and the first limit member 210, and at the same time, it can ensure the smoothness of the first limit member 210 when sliding relative to the mating side 111, leaving a 1 mm fault tolerance gap.

[0059] In the above technical solution, the gap width between the second limit member 220 and the mating side 111 can be set to be less than or equal to 3 mm, so as to prevent the strip to be centered from entering the gap between the second limit member 220 and the mating side 111, which is more conducive to reducing the probability of jamming of the strip to be centered, and the gap width between the second limit member 220 and the mating side 111 can be set to be greater than or equal to 1 mm, which can ensure that the second limit member 220 can slide smoothly on the mating side 111, leaving a 1 mm fault-tolerant gap to prevent dust or sludge from entering and affecting the sliding of the second limit member 220 on the mating side 111, which is conducive to avoiding jamming or wear between the second limit member 220 and the mating side 111.

[0060] It is understandable that the gap width between the first limiter 210 and the mating side 111 can be set to be less than or equal to 3 mm and greater than or equal to 1 mm, and at the same time, the gap width between the second limiter 220 and the mating side 111 can be set to be less than or equal to 3 mm and greater than or equal to 1 mm.

[0061] It is understandable that the distance between the first limit member 210 and the mating side 111 is the gap width between the first limit member 210 and the mating side 111 , and the distance between the second limit member 220 and the mating side 111 is the gap width between the second limit member 220 and the mating side 111 .

[0062] Exemplarily, the gap width between the first limiting member 210 and the mating side 111 may be set to be 1 mm to 2 mm.

[0063] Exemplarily, the gap width between the second limiting member 220 and the mating side 111 may be set to be 1 mm to 2 mm.

[0064] In some examples, it also includes: a first driving part; a transmission part, which is connected to the first driving part, and the first limiting member 210 and the second limiting member 220 are both connected to the transmission part. When the first driving part is running, the transmission part is used to drive the first limiting member 210 and the second limiting member 220 to move closer to or away from each other.

[0065] In the above technical scheme, the strip centering device also includes a first driving part and a transmission part, the transmission part is connected to the first driving part, the first driving part is used to transmit the transmission part through driving force, the first limit member 210 and the second limit member 220 are both connected to the transmission part, and the first limit member 210 and the second limit member 220 can be driven to move by the transmission part; in actual application, the first driving part is operated to provide driving force to the transmission part, so that the transmission part is transmitted, and at the same time, the transmission part drives the first limit member 210 and the second limit member 220 to move, and the first limit member 210 and the second limit member 220 can be driven by the transmission part to move closer to or farther away from each other, thereby completing the centering work of the strip to be centered.

[0066] In some examples, it also includes: a second driving unit connected to the first limiting member 210, used to drive the first limiting member 210 to slide along the extension direction of the slide groove 112; a third driving unit connected to the second limiting member 220, used to drive the first limiting member 210 to slide along the extension direction of the slide groove 112; wherein the second driving unit and the third driving unit can both operate independently.

[0067] In the above technical solution, the strip centering device may also include a second driving member and a third driving member, the second driving member is connected to the first limiting member 210, and is used to provide a driving force for the first limiting member 210 to drive the first limiting member 210 to slide along the extension direction of the slide groove 112; the third driving member is connected to the second limiting member 220, and is used to provide a driving force for the second limiting member 220 to drive the first limiting member 210 to slide along the extension direction of the slide groove 112; the second driving member and the third driving member can both operate independently.

[0068] It can be understood that the second driving member can be operated independently, and the second driving member drives the first limiting portion 200 to move closer to or away from the second limiting portion 200, thereby realizing the centering work of the strip to be centered.

[0069] It can be understood that the third driving member can be operated independently, and the third driving member drives the second limiting portion 200 to be close to or away from the first limiting portion 200, so as to realize the centering work of the strip to be centered.

[0070] It is understandable that the second driving member and the third driving member can be operated simultaneously, the second driving member drives the first limiting portion 200, and the third driving member drives the second limiting portion 200, so that the first limiting member 210 and the second limiting member 220 are relatively close to or far away from each other.

[0071] It should be noted that the second drive unit and the third drive unit are provided to drive the first limit member 210 and the second limit member 220 respectively. The centering position of the first limit member 210 and the second limit member 220 can be controlled by adjusting the second drive unit and the third drive unit, thereby changing the centering position of the strip to be centered. The centering position of the strip to be centered can be adjusted according to actual working conditions, which has better adaptability.

[0072] In some examples, the protrusion 310 disposed on the first position-limiting member 210 is an integral structure with the first position-limiting member 210; and / or the protrusion 310 disposed on the second position-limiting member 220 is an integral structure with the second position-limiting member 220.

[0073] In the above technical solution, the raised portion 310 arranged on the first limit member 210 is an integrated structure with the first limit member 210, which can improve the overall structural strength of the first limit member and the raised portion 310, prevent the raised portion 310 from falling off under the impact of the strip to be centered, and is more conducive to the stable operation of the device.

[0074] In the above technical solution, the raised portion 310 arranged on the second limit member 220 is an integrated structure with the second limit member 220, which can improve the overall structural strength of the second limit member and the raised portion 310, prevent the raised portion 310 from falling off under the impact of the strip to be centered, and is more conducive to the stable operation of the device.

[0075] It is understandable that the protrusion 310 disposed on the first limiting member 210 and the first limiting member 210 can be an integrated structure, and the protrusion 310 disposed on the second limiting member 220 and the second limiting member 220 can be an integrated structure.

[0076] According to a second aspect of an embodiment of the present disclosure, a welding device is proposed, comprising: a strip centering device as proposed in any one of the first aspects above.

[0077] It can be understood that the welding equipment proposed in the second aspect of the embodiment of the present disclosure may also include: a welding machine, wherein the strip steel centering device proposed in the first aspect of the present disclosure is arranged at the feeding end of the welding machine, and the welding machine is used to weld the strip steel that has been centered.

[0078] Since the welding equipment provided by the embodiment of the present disclosure includes the strip centering device proposed in any one of the first aspects above, it has all the beneficial effects of the strip centering device, which will not be elaborated here.

[0079] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0080] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present disclosure.

[0081] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0082] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A strip centering device, It is characterized in that include: The guide portion has a matching side, and the matching side is provided with a sliding groove; The limiting part includes a first limiting member and a second limiting member, wherein the first limiting member and the second limiting member are both arranged on the matching side and are used to slide along the extending direction of the slide slot, so that one of the first limiting member and the second limiting member can be close to or away from the other, and there is a gap between the first limiting member and the second limiting member and the matching side; A raised portion, both the first limiting member and the second limiting member are provided with the raised portion, and at least a portion of the raised portion is located in the sliding groove.

2. The strip centering device according to claim 1, It is characterized in that The protrusion is loosely matched with the slide groove.

3. The strip centering device according to claim 1, It is characterized in that The guide portion comprises: a first support plate having the mating side; A second support plate is disposed on one side of the first support plate, and the second support plate is arranged along the extension direction of the slide groove; A third support plate is arranged on the other side of the first support plate, and the third support plate is arranged along the extension direction of the slide groove; Wherein, a side of the second supporting plate close to the limiting portion and a side of the third supporting plate close to the limiting portion both protrude from the matching side.

4. The strip centering device according to claim 3, It is characterized in that The second support plate and the third support plate are both detachably connected to the first support plate.

5. The strip centering device according to claim 3, It is characterized in that The first support plate is made of plastic material; and / or The second support plate and the third support plate are both made of copper material.

6. The strip centering device according to any one of claims 1 to 5, It is characterized in that The width of the gap between the first stopper and the mating side is less than or equal to 3 mm and greater than or equal to 1 mm; and / or A gap width between the second limiting member and the matching side is less than or equal to 3 mm and greater than or equal to 1 mm.

7. The strip centering device according to any one of claims 1 to 5, It is characterized in that Also includes: a first driving unit; The transmission part is connected to the first driving part, and the first limiting member and the second limiting member are both connected to the transmission part. When the first driving part is running, the transmission part is used to drive the first limiting member and the second limiting member to move closer to or away from each other.

8. The strip centering device according to any one of claims 1 to 5, It is characterized in that Also includes: A second driving part, connected to the first limiting member, and used for driving the first limiting member to slide along the extending direction of the sliding groove; a third driving part, connected to the second limiting member, and used for driving the first limiting member to slide along the extending direction of the sliding groove; Wherein, the second driving unit and the third driving unit can both operate independently.

9. The strip centering device according to claim 1, It is characterized in that The protrusion provided on the first limiting member is an integrated structure with the first limiting member; and / or The protrusion disposed on the second limiting member is an integrated structure with the second limiting member.

10. A welding device, It is characterized in that include: A centering device as claimed in any one of claims 1 to 9.

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