A palletizing correction device

Abstract

The present invention belongs to the technical field of palletizing correction, and particularly relates to a palletizing correction device, which includes a frame body, two first moving beams, a second moving beam, a first driving mechanism and a second driving mechanism; the first moving beams are movably arranged in the frame body, and the first driving mechanism is connected to the two first moving beams; the two second moving beams are arranged in parallel with each other and form a scalable rectangular cavity with the two first moving beams, and the second driving mechanism is connected to the two second moving beams; the device further includes two telescopic mechanisms, which are respectively arranged on the two second moving beams; the telescopic mechanism includes multiple groups of push plates and telescopic members, a guide rail is arranged on one side surface of the second moving beam, each push plate is slidably connected to the guide rail, the telescopic member includes multiple groups of cross arms connected by rotation, the cross arm includes two connecting rods arranged in a cross manner and a pivot shaft penetrating through the cross position of the two connecting rods, and each pivot shaft is connected to a push plate; the push plates located on both sides are fixedly connected to the adjacent first moving beam; the maximum distance between two adjacent push plates is less than the width or length of the object to be corrected.

Description

Technical Field

[0001] The present invention belongs to the technical field of palletizing, and particularly relates to a palletizing correction device. Background Art

[0002] In today's logistics field, automatic palletizing, stacking, and conveying of packing boxes are basically achieved by an automated production line. Specifically, the packing boxes are conveyed to the palletizing and stacking position by a conveyor line, and then collected and neatly stacked by a manipulator. After being neatly palletized, they are conveyed to the next station. Since there will be a problem of misalignment between the packing boxes after each layer is placed, it will further lead to the misalignment of the packing boxes in the whole layer with those in the next layer. Therefore, after each layer of packing boxes is placed, it is necessary to correct the packing boxes in this layer neatly. For example, the correction device disclosed in the Chinese patent document with the publication number CN107182208B specifically discloses that the correction device is characterized by having: a base member; a movable member disposed on the base member in a manner that can move in the stacking direction of the workpieces stacked by a robot; a first correction member and a second correction member disposed on the movable member in a manner that extends toward the stacking area of the workpieces and one or both can move in a direction opposite to each other; a third correction member and a fourth correction member disposed on the first correction member in a manner that extends toward the stacking area of the workpieces and one or both can move in a direction opposite to each other; and a fifth correction member and a sixth correction member disposed on the second correction member in a manner that extends toward the stacking area of the workpieces and one or both can move in a direction opposite to each other.

[0003] In the technical solution disclosed in the above patent document, the third correction member, the fourth correction member, the fifth correction member, and the sixth correction member are on the same plane and enclose a correction space with the first correction member and the second correction member. However, the third correction member and the fourth correction member are separated from each other, and the fifth correction member and the sixth correction member are separated from each other. When the first correction member and the second correction member are pulled apart wide enough, there is a large distance between the third correction member and the fourth correction member, and between the fifth correction member and the sixth correction member. Therefore, when correcting the stacked packing boxes, when the width or length of the packing box is less than the distance between the third correction member and the fourth correction member, and the distance between the fifth correction member and the sixth correction member, it will cause the inability to correct the packing box in the middle position. And one end of the third correction member, the fourth correction member, the fifth correction member, and the sixth correction member in the above patent document is suspended, which will result in a large lever arm, causing the connection positions of the third correction member and the fifth correction member with the second correction member, and the connection positions of the fourth correction member and the sixth correction member with the first correction member to be subjected to greater forces, affecting the overall operation stability. Summary of the Invention

[0004] The object of the present invention is to provide a palletizing correction device, which solves the problems that the packing boxes at the middle position of the layer stack cannot be corrected in the existing palletizing correction device, and there is instability during the correction process.

[0005] To achieve the above object, a palletizing correction device provided by an embodiment of the present invention includes a frame body, two first moving beams, a second moving beam, a first driving mechanism and a second driving mechanism; the frame body includes two first side frames and two second side frames enclosing a rectangular frame, the two first moving beams are movably arranged in the frame body, and the two first moving beams are arranged parallel to each other, the first driving mechanism is connected to the two first moving beams and drives the two first moving beams to translate relatively; the two second moving beams are arranged parallel to each other and enclose a scalable rectangular cavity with the two first moving beams, the second driving mechanism is connected to the two second moving beams and is used to drive the two second moving beams to translate relatively; further includes two telescopic mechanisms, which are respectively arranged on the two second moving beams; the telescopic mechanism includes multiple groups of push plates and telescopic members, a guide rail is arranged on one side surface of the second moving beam, each push plate is slidably connected to the guide rail, the push plate extends into the rectangular cavity, the telescopic member includes multiple groups of cross arms connected in a rotating manner, the cross arm includes two connecting rods arranged in a cross manner and a pivot shaft passing through the cross position of the two connecting rods, and each pivot shaft is connected to a push plate; the push plates at both sides are fixedly connected to the adjacent first moving beam, or the pivot shafts at both ends of the telescopic member are connected to the first moving beam; the maximum distance between two adjacent push plates is less than the width or length of the object to be corrected.

[0006] Further, the second moving beam is arranged on the top side of the first moving beam, and the lower end of the push plate extends downward into the rectangular cavity.

[0007] Further, the telescopic mechanism further includes a fixed seat arranged on the second moving beam, the fixed seat has a pressing surface, and the pressing surface is on the same plane as the side surface of each push plate; the number of telescopic members is two groups and they are symmetrically arranged on both sides of the fixed seat, and the end of the telescopic member close to the fixed seat is pivotally connected to the fixed seat.

[0008] Further, second guide rails are arranged on the bottom sides of the two second moving beams, and sliders slidably connected to the second guide rails are arranged at the lower ends of the push plates.

[0009] Furthermore, mounting seats are provided at both ends of the first moving beam. The mounting seats are provided with mounting portions extending to the top sides of the corresponding first side frames, and the mounting portions are slidably connected to the first side frames. The first driving mechanism includes a first driving motor and two chain drive assemblies. The first driving motor is disposed on one side of the frame body. The two chain drive assemblies are oppositely arranged. One sprocket in the chain drive assembly is connected to the main shaft of the first driving motor, and the other sprocket is disposed at one end of the first side frame. The chain in the chain drive assembly is connected to a corresponding one of the mounting seats. The first driving motor drives the two chain drive assemblies to move the two first moving beams towards or away from each other.

[0010] Furthermore, a transmission shaft is rotatably connected to one side of each of the two first moving beams. Both ends of the transmission shaft extend to the inner sides of the two oppositely arranged first side frames. Gears are provided at both ends of the transmission shaft, and racks are provided on the inner sides of the two first side frames. The gears are engaged with the corresponding racks.

[0011] Furthermore, connection seats are provided at both ends of the second moving beam. The connection seats are slidably connected to the top sides of the corresponding second side frames. The second driving mechanism includes a second driving motor, two second chain drive assemblies, and a rotating shaft. The second driving motor is disposed outside one of the second side frames. The rotating shaft passes through from one end of one of the first side frames to the other end and is connected to the second driving motor. The two second chain drive assemblies are respectively connected to both ends of the rotating shaft, and the second chain drive assemblies are connected to the outside of the corresponding second side frames. The chains in the second chain drive assemblies are connected to the corresponding connection seats. The second driving motor drives the rotating shaft to rotate, so that the two second moving beams move towards or away from each other in parallel.

[0012] Furthermore, a fixed seat is further provided on the outside of the frame body. The fixed seat is used to connect the lifting seat of the lifting mechanism, and the lifting mechanism is used to drive the frame body to move up and down.

[0013] Furthermore, the first driving mechanism includes two first electric lead screws, which are respectively disposed on the first side frames.

[0014] Furthermore, the second driving mechanism includes two second electric lead screws, which are respectively disposed on the two second side frames.

[0015] One or more of the above technical solutions in the palletizing and alignment device provided by the embodiments of the present invention have at least the following technical effects:

[0016] 1. The palletizing correction device of the present invention is formed by two first moving beams and two second moving beams to enclose a scalable rectangular cavity. A telescopic mechanism is provided on the two second moving beams. The telescopic mechanism includes multiple groups of push plates and telescopic members. A guide rail is provided on one side of the second moving beam. The push plates are slidably connected to the guide rail. The telescopic member includes multiple groups of cross arms that are rotatably connected. The cross arm includes two cross - arranged connecting rods and a pivot shaft passing through the intersection of the two connecting rods, and each pivot shaft is connected to a push plate. Therefore, when the two first moving beams are driven by the first driving mechanism to translate, the telescopic member will be pulled to expand and contract. During the expansion and contraction of the telescopic member, each push plate will be driven to translate equidistantly. Therefore, when the pallet - stacked packaging boxes are corrected neatly by this correction device, first, the two first moving beams and the two second moving beams are driven by the first driving mechanism and the second driving mechanism to move in opposite directions, so that the rectangular cavity can be enlarged to accommodate all the packaging boxes stacked in a whole layer within the rectangular cavity. Then, the two first moving beams and the two second moving beams are respectively driven by the first driving mechanism and the second driving mechanism to move towards each other, so that the rectangular cavity shrinks. During the shrinking process, the telescopic member also follows to contract, driving each push plate to close together and correcting the packaging boxes neatly.

[0017] 2. When the rectangular cavity shrinks to push the packaging boxes to be stacked neatly, the push plates can squeeze the packaging boxes. Since the push plates are distributed between the two first moving beams, all the packaging boxes on the opposite side of the push plates can be squeezed, and there is no problem that the packaging boxes in the middle position cannot be corrected.

[0018] 3. Since both ends of the telescopic member are fixed, there is no problem of a lever structure. Therefore, during the correction process, it can be more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following - described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a structural diagram of the palletizing correction device provided by the embodiment of the present invention arranged on the lifting mechanism.

[0021] Figure 2 It is a structural diagram of the palletizing correction device provided by the embodiment of the present invention.

[0022] Figure 3 It is a structural diagram of the telescopic mechanism of the palletizing correction device provided by the embodiment of the present invention.

[0023] Figure 4 It is a structural diagram of the other side of the telescopic mechanism of the palletizing correction device provided by the embodiment of the present invention.

[0024] Figure 5 This is a structural diagram of the first driving mechanism part of the palletizing correction device provided by the embodiment of the present invention.

[0025] Figure 6 This is a structural diagram of the second driving mechanism part of the palletizing correction device provided by the embodiment of the present invention. Detailed implementation manners

[0026] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "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 accompanying drawings, and is only for the convenience of describing the embodiments of the present invention 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 limiting the present invention.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0029] In the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it 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 embodiments of the present invention can be understood according to specific circumstances.

[0030] In an embodiment of the palletizing correction device of the present invention, please refer to Figure 1 and Figure 2, The palletizing correction device is used to correct the packaging boxes stacked on the same layer so that the stacked packaging boxes are neatly stacked, facilitating subsequent overall packaging and transportation. The palletizing correction device of this embodiment includes a frame body 100, two first moving beams 200, two second moving beams 300, a first driving mechanism 400, a second driving mechanism 500, and two telescopic mechanisms 600.

[0031] Please refer to Figures 2 to 4 , wherein, the frame body 100 includes two first side frames 110 and two second side frames 120 enclosing a rectangular frame. The two first moving beams 200 are movably arranged in the frame body 100, and the two first moving beams 200 are arranged parallel to each other. The first driving mechanism 400 is connected to the two first moving beams 200 to drive the two first moving beams 200 to translate relatively. The two second moving beams 300 are arranged parallel to each other and enclose a scalable rectangular cavity A with the two first moving beams 200. The second driving mechanism 500 is connected to the two second moving beams 300 to drive the two second moving beams 300 to translate relatively. The two telescopic mechanisms 600 are respectively arranged on the two second moving beams 300. The telescopic mechanism 600 includes multiple groups of push plates 610 and telescopic members 620. A guide rail 310 is arranged on one side surface of the second moving beam 300. Each push plate 610 is slidably connected to the guide rail 310, and the push plate 610 extends into the rectangular cavity A. The telescopic member 620 includes multiple groups of cross arms 621 connected by rotation. The cross arm 621 includes two connecting rods 622 arranged crosswise and a pivot shaft 623 passing through the cross position of the two connecting rods 622, and each pivot shaft 623 is connected to a push plate 610. The push plates 610 at both ends are fixedly connected to the adjacent first moving beam 200, or the pivot shafts 623 at both ends of the telescopic member 620 are connected to the first moving beam 200. Specifically, when connecting through the push plates 610 at both ends to the corresponding first moving beam 200, a connecting portion extends from the top side of the push plate 610 to the first moving beam 200, and is connected to the first moving beam 200 by the connecting portion. And at both ends of the telescopic member 620 and the corresponding

[0032] In the palletizing correction device of this embodiment, when it is necessary to correct the packaging boxes stacked on the same layer, first, the first driving mechanism 400 and the second driving mechanism 500 respectively drive the two first moving beams 200 and the two second moving beams 300 to move in opposite directions, so that the rectangular cavity A is enlarged to accommodate all the packaging boxes stacked in the whole layer within the rectangular cavity A. Then, the first driving mechanism 400 and the second driving mechanism 500 respectively drive the two first moving beams 200 and the two second moving beams 300 to move towards each other, so that the rectangular cavity A shrinks. During the shrinking process, the telescopic member 620 also follows and contracts, driving the push plates 610 to close together, and then the packaging boxes can be corrected neatly. Since when the rectangular cavity A shrinks to push the packaging boxes to be stacked neatly, the push plates 610 can squeeze the packaging boxes, and the push plates 610 are distributed between the two first moving beams 200, all the packaging boxes on the opposite side of the push plates 610 can be squeezed, and there is no problem that the packaging boxes in the middle position cannot be corrected. And the two ends of the telescopic member 620 are directly or indirectly fixedly connected to the two first moving beams 200, so a lever structure will not be formed. Therefore, during the correction process, it can be more stable.

[0033] Further, referring to Figure 2 , the second moving beam 300 is arranged on the top side of the first moving beam 200, and the lower end of the push plate extends downward into the rectangular cavity A. In this embodiment, the inner side walls of the two first moving beams 200 and the inner side surfaces of the two groups of push plates 610 form the squeezing surface of the rectangular cavity A.

[0034] Further, referring to Figure 3 and Figure 4 , the telescopic mechanism 600 further includes a fixed seat 630, which is arranged on the second moving beam 300. The fixed seat 630 has a pressing surface 631, and the pressing surface 631 is in the same plane as the inner side surfaces of the push plates 610. The number of the telescopic members 620 is two groups and they are symmetrically arranged on both sides of the fixed seat 630. The end of the telescopic member 620 close to the fixed seat 630 is pivotally connected to the fixed seat 630. In this embodiment, the length of the telescopic mechanism 620 can be shortened, thereby increasing the stability of the telescopic member 620. In addition, by arranging the fixed seat 630 in the middle of the second moving beam 300, each telescopic member 620 can be telescoped independently; and the stability can also be increased.

[0035] Further, referring to Figure 3 , second guide rails 320 are arranged on the bottom sides of the two second moving beams 300, and sliders 640 slidably connected to the second guide rails 320 are arranged at the lower ends of the push plates 610. Thereby, the stability of the connection between the push plates 610 and the second cross beam 300 is increased.

[0036] Further, referring to Figure 5, mounting seats 210 are provided at both ends of the first moving beam 200. The mounting seats 210 are provided with mounting parts 211 extending to the top sides of the corresponding first side frames 110, and the mounting parts 211 are slidably connected to the corresponding first side frames 111. The first driving mechanism 400 includes a first driving motor 410 and two sets of chain drive assemblies 420. The first driving motor 400 is provided on one side of the frame body 100. The two chain drive assemblies 420 are arranged oppositely. The first sprocket in the chain drive assembly 420 is connected to the main shaft of the first driving motor 410, and the second sprocket is rotatably connected to one end of the first side frame 110. The chain 421 in the chain drive assembly 420 is connected to the corresponding mounting seat 210. The first driving motor 410 drives the two chain drive assemblies 420 to move the two first moving beams 200 towards or away from each other. Specifically, the first driving motor 410 drives the first sprockets in the two sets of chain drive assemblies 420 to rotate, thereby driving the operation of each chain 421. Under the operation of the chain 421, the first moving beam 200 can be pulled to move on the first side frame 110.

[0037] Further, referring to Figure 5 , a transmission shaft 220 is rotatably connected to one side of each of the two first moving beams 200. Both ends of the transmission shaft 220 extend to the inner sides of the two relatively arranged first side frames 110. Gears 221 are provided at both ends of the transmission shaft 220. Rack bars 112 are provided on the inner sides of the two first side frames 110, and the gears 221 are engaged with the corresponding rack bars 112. In this embodiment, during the process of the chain drive assembly 420 driving the first moving beam 200 to translate, the gear 221 close to the chain drive assembly 420 rolls on its corresponding rack bar 112, which will drive the transmission shaft 220 to rotate. Under the rotation of the transmission shaft 220, the other gear 221 is driven to roll on its corresponding rack bar 112, so that both ends of the first moving beam 200 can move synchronously, thereby ensuring the stability of operation.

[0038] Further, referring to Figure 6 , connection seats 330 are provided at both ends of the second moving beam 300. The connection seats 330 are slidably connected to the top sides of the corresponding second side frames 120. The second driving mechanism 500 includes a second driving motor 510, two sets of second chain drive assemblies 520 and a rotating shaft 530. The second driving motor 510 is provided on the outside of one of the second side frames 120. The rotating shaft 530 passes through from one end to the other end of one of the first side frames 120 and is connected to the second driving motor 510, so that the rotating shaft 530 can be driven to rotate by the second driving motor 510. The two second chain drive assemblies 520 are respectively connected to both ends of the rotating shaft 530, and the second chain drive assemblies 520 are connected to the outside of the corresponding second side frames 120. The chains in the second chain drive assemblies 520 are connected to the corresponding connection seats 330. The second driving motor 510 drives the rotating shaft 530 to rotate, so that the two second moving beams 300 translate towards or away from each other.

[0039] Furthermore, a fixed seat 130 is also provided on the outer side of the frame body 100. The fixed seat 130 is used to connect the lifting seat of the lifting mechanism 700, and the lifting mechanism 700 is used to drive the frame body 100 to move up and down. After each layer of packaging boxes is stacked, the lifting mechanism 700 pushes the frame body 100 to lift by the height of one layer, and then the correction of the upper layer of packaging boxes can be completed.

[0040] Furthermore, the first driving mechanism 400 may also include two groups of first electric lead screws, which are respectively arranged on the first side frame 110. The first moving beam 200 is driven to translate by the first electric lead screws.

[0041] Furthermore, the second driving mechanism 500 includes two groups of second electric lead screws, which are respectively arranged on the two second side frames 120. The two second cross beams 300 can be driven to translate by the two groups of second electric lead screws.

[0042] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A palletizing correction device, comprising a frame body, two first moving beams, two second moving beams, a first driving mechanism and a second driving mechanism; the frame body includes two first side frames and two second side frames enclosing a rectangular frame, the two first moving beams are movably arranged in the frame body, and the two first moving beams are arranged in parallel with each other, the first driving mechanism is connected to the two first moving beams and drives the two first moving beams to translate relatively; the two second moving beams are arranged in parallel with each other and enclose a scalable rectangular cavity with the two first moving beams, the second driving mechanism is connected to the two second moving beams and is used for driving the two second moving beams to translate relatively; it is characterized in that, It further includes two telescopic mechanisms, which are respectively arranged on the two second moving beams; the telescopic mechanism includes multiple groups of push plates and telescopic members, a guide rail is arranged on one side surface of the second moving beam, each push plate is slidably connected to the guide rail, the push plate extends into the rectangular cavity, the telescopic member includes multiple groups of cross arms rotatably connected, the cross arm includes two connecting rods arranged crosswise and a pivot shaft passing through the cross position of the two connecting rods, and each pivot shaft is connected to one push plate; the maximum distance between two adjacent push plates is less than the width or length of the object to be corrected.

2. The palletizing correction device according to claim 1, wherein: The second moving beam is arranged on the top side of the first moving beam, and the lower end of the push plate extends downward into the rectangular cavity.

3. The palletizing correction device according to claim 1, characterized in that: The telescopic mechanism further includes a fixed seat arranged on the second moving beam, the fixed seat has a pressing surface, and the pressing surface is in the same plane as the side surface of each push plate; the number of telescopic members is two groups and they are symmetrically arranged on both sides of the fixed seat, and one end of the telescopic member close to the fixed seat is pivotally connected to the fixed seat.

4. The palletizing correction device according to any one of claims 1 to 3, characterized in that: Second guide rails are arranged on the bottom sides of the two second moving beams, and sliders slidably connected to the second guide rails are arranged at the lower ends of the push plates.

5. The palletizing correction device according to any one of claims 1 to 3, characterized in that: Mounting seats are arranged at both ends of the first moving beam, the mounting seats are provided with mounting parts extending to the top sides of the corresponding first side frames, and the mounting parts are slidably connected to the first side frames; the first driving mechanism includes a first driving motor and two sets of chain drive assemblies; the first driving motor is arranged on one side of the frame body, the two chain drive assemblies are arranged oppositely, one sprocket in the chain drive assembly is connected to the main shaft of the first driving motor, and the other sprocket is arranged at one end of the first side frame; the chain in the chain drive assembly is connected to the corresponding mounting seat; the first driving motor drives the two chain drive assemblies to move the two first moving beams towards each other or in opposite directions.

6. The palletizing correction device according to claim 5, wherein: A transmission shaft is rotatably connected to one side of each of the two first moving beams, both ends of the transmission shaft extend to the inner sides of the two oppositely arranged first side frames, gears are arranged at both ends of the transmission shaft, and racks are arranged on the inner sides of the two first side frames, and the gears are meshed with the corresponding racks.

7. The palletizing correction device according to any one of claims 1 to 3, characterized in that: Connection seats are arranged at both ends of the second moving beam, and the connection seats are slidably connected to the top sides of the corresponding second side frames; the second driving mechanism includes a second driving motor, two sets of second chain drive assemblies and a rotating shaft, the second driving motor is arranged outside one of the second side frames, the rotating shaft passes through from one end of the first side frame to the other end and is connected to the second driving motor; the two second chain drive assemblies are respectively connected to both ends of the rotating shaft, and the second chain drive assemblies are connected to the outside of the corresponding second side frames, and the chains in the second chain drive assemblies are connected to the corresponding connection seats; The second driving motor drives the rotating shaft to rotate, so that the two second moving beams move towards each other or in opposite directions in translation.

8. The palletizing correction device according to claim 1, wherein: A fixing seat is further arranged on the outer side of the frame body. The fixing seat is used for connecting the lifting seat of the lifting mechanism, and the lifting mechanism is used for driving the frame body to move up and down.

9. The palletizing correction device according to claim 1, wherein: The first driving mechanism includes two groups of first electric lead screws, which are respectively arranged on the first side frame.

10. The palletizing correction device according to claim 1, wherein: The second driving mechanism includes two groups of second electric lead screws, which are respectively arranged on the two second side frames.

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