Centering device for container panels

Abstract

The present invention relates to the technical field of containers, and in particular to a centering device for container panels. It comprises two centering mechanisms arranged at relative intervals in the transverse direction, and each centering mechanism comprises a base frame, at least one supporting frame, at least one transmission component, at least one centering adjustment component and a clamping component. The supporting frame is mounted on the base frame, and the transmission component comprises a transmission wheel and a lifting frame, the lifting frame is arranged on the base frame, and the transmission wheel is arranged on the top surface of the lifting frame; each centering adjustment component comprises two brackets arranged in the longitudinal direction in a relative manner, the brackets are located on the outer side of the supporting frame, and the two brackets can be synchronously moved to the centering position in the longitudinal direction; they are used to press the top surface of the plate to keep the plate stable when the plate is transmitted, and the clamping arm of the clamping component drives the plate to move in the transverse direction to the welding station when moving, so that the plates transmitted by the two centering mechanisms are aligned and welded at the welding position.

Description

Technical Field

[0001] The invention relates to the technical field of containers, and in particular to a centering device for container panels. Background Art

[0002] At present, in the manufacturing structure of the box plate of the container, a positioning plate is arranged between the two conveying devices, and the positioning plate is upright and perpendicular to the transmission direction of the conveying devices. When the two plates need to be centered, a plate is first placed on each of the two conveying devices, and the two conveying devices are manually operated so that the two plates are moved to contact the two surfaces of the positioning plate respectively to complete the initial positioning of the two plates. At this time, since it is difficult to ensure that the two plates reach the centered state, it is usually necessary to manually adjust the positions of the plates on the two conveying devices multiple times to make the edges of the two plates parallel and the center lines of the two plates on the same straight line, that is, the two plates reach the centered state to meet the welding requirements. The manufacturing structure of the box plate of the container is difficult to quickly and accurately achieve the alignment of the two plates. Summary of the invention

[0003] The purpose of the present invention is to provide a container panel centering device to solve the problem that the current container panel manufacturing structure is difficult to quickly and accurately achieve the alignment of two panels.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] The present invention provides a centering device for container box plates, comprising two centering mechanisms arranged with relative spacing in the transverse direction, each centering mechanism comprising a base frame, at least one supporting frame, at least one transmission component, at least one centering adjustment component and a clamping component. The supporting frame is installed on the base frame; the transmission component includes a transmission wheel and a lifting frame, the lifting frame is arranged on the base frame, and the transmission wheel is arranged on the top surface of the lifting frame, and is used to transmit the plate to the clamping station in the horizontal direction; each of the centering adjustment components includes two brackets arranged opposite to each other in the longitudinal direction, the brackets are located on the outer side of the supporting frame, and there is a centering position between the two brackets, and the two brackets can move synchronously toward the centering position in the longitudinal direction, so that the two brackets clamp the plate on the universal shaft bearing, and make the transverse center line of the plate coincide with the centering position, wherein the centering position of one centering mechanism and the centering position of the other centering mechanism are located on the same straight line, and the straight line where the centering positions of the two centering mechanisms are located extends in the horizontal direction; the clamping component is used to press the top surface of the plate to keep the plate stable when transmitting the plate, and the transmission component drives the plate to move in the transverse direction to the welding station, so that the plates transmitted by the two centering mechanisms are aligned and welded at the welding position.

[0006] In one embodiment, the centering adjustment assembly also includes a centering gear and two racks; the centering gear is capable of rotating and is located at the centering position; the two racks are arranged at intervals in the transverse direction, and both of the racks extend in the longitudinal direction. The two racks are respectively located on both sides of the centering gear and are meshed with the centering gear, and the two racks are fixedly connected to the two brackets one by one.

[0007] In one embodiment, the centering adjustment assembly further includes a synchronous drive cylinder, which is mounted on the base frame, and an output end of the synchronous drive cylinder is fixedly connected to one of the racks so that the two racks move synchronously in the longitudinal direction.

[0008] In one of the embodiments, the centering gear is rotatably mounted on the base frame; the centering adjustment assembly also includes two connecting rods, a slider and a centering slide rail; each of the racks of the two connecting rods is connected to one of the brackets through a connecting rod; the slider is fixed on the side of the connecting rod; the centering slide rail extends longitudinally, the centering slide rail is fixed on the base frame, and slidably cooperates with the slider to enable the slider to move longitudinally.

[0009] In one embodiment, the distances from the two brackets to the centering position are equal, and each bracket includes a bracket body and a plurality of centering backrests; the plurality of centering backrests are fixedly connected to the top of the bracket body, the plurality of centering backrests are located on the same straight line, the straight line where the plurality of centering backrests are located extends laterally, and the centering backrests are used to contact the edge of the plate.

[0010] In one embodiment, the clamping assembly includes a material transport slide rail extending in a transverse direction, a mounting seat slidably disposed on the material transport slide rail, and a clamping arm disposed on the mounting seat, wherein the clamping arm is capable of pressing the plate.

[0011] In one embodiment, the material transport slide is fixedly connected to the bottom of the support frame, and the clamping assembly also includes a drive motor and a screw rod; the drive motor is installed and fixed under the support frame; the screw rod is fixedly connected to the output end of the drive motor and is threadedly connected to the mounting seat to drive the mounting seat to move along the material transport slide.

[0012] In one of the embodiments, in one of the centering mechanisms, there are three supporting frames, the three supporting frames are arranged at intervals in the longitudinal direction, the three supporting frames are divided into a first frame and two second frames, the two second frames are located on both sides of the first frame, and the material transport slide rail is fixedly connected to the first frame; the first frame includes three frames, the three frames are arranged at intervals in the longitudinal direction, and the universal ball bearings are arranged on the top surfaces of the frames; there are two lifting frames, the two lifting frames are respectively located on both sides of the first frame, and each lifting frame is located between the first frame and the second frame; the mounting seat is located in the first frame, the clamping arm is located between two adjacent frames, and can extend out of the top surface of the frame with a universal ball shaft.

[0013] In one of the embodiments, the centering mechanism further includes at least one stop assembly, the stop assembly includes two stop members arranged at intervals along the longitudinal direction, and the two stop members are respectively fixed on the two second frames; in one of the centering mechanisms, the two second frames are both located between the two stop members, and the stop members are used to stop the plate from detaching from the centering mechanism along the longitudinal direction.

[0014] In one embodiment, the clamping arm includes a first arm, a second arm, a third arm, a first oil cylinder, a second oil cylinder and a third oil cylinder; the first arm is rotatably connected to the mounting base; the second arm is rotatably connected to the first arm; the third arm is rotatably connected to the second arm and is used to abut the top surface of the plate; the first oil cylinder has two ends rotatably connected to the mounting base and the first arm respectively to drive the first arm to rotate up and down relative to the mounting base; the second oil cylinder has two ends rotatably connected to the first arm and the second arm respectively to drive the second arm to rotate up and down relative to the first arm; the third oil cylinder has two ends rotatably connected to the second arm and the third arm respectively to drive the third arm to rotate up and down relative to the second arm.

[0015] In one of the embodiments, the centering mechanism also includes a top plate frame that can be lifted and lowered on the base frame, the top plate frame is located between the supporting frames of the two centering mechanisms, and the top plate frame includes a frame body, a first lifting drive cylinder, a first guide tube, and a first guide rod; the frame body is located above the base frame, and the universal ball bearing is installed on the top surface of the frame body; the first lifting drive cylinder is fixedly connected to the base frame, and the output end of the first lifting drive cylinder is connected to the frame body; the first guide tube is vertically arranged on the base frame; the first guide rod is fixedly connected to the frame body and slidably arranged in the first guide tube.

[0016] In one embodiment, the transmission assembly also includes a transmission motor, a transmission gear, a transmission shaft, a transmission gear and a chain; the transmission motor is fixedly connected to the lifting frame; the transmission gear is fixed on the output shaft of the transmission motor; the transmission shaft extends longitudinally and is rotatably arranged under the lifting frame, and the transmission wheel is fixed on the transmission shaft; the transmission gear is fixed on the transmission shaft; and the chain is sleeved on the transmission gear and the transmission gear.

[0017] In one of the embodiments, the mounting seat is located in the supporting frame, and the centering mechanism further includes a plurality of positioning supports and a positioning cylinder; the plurality of positioning supports are located in the transmission direction of the transmission component, and the plurality of positioning supports are located on the same straight line, and the straight line where the plurality of positioning supports are located extends longitudinally; the positioning cylinder is located below the positioning support and is fixed to the mounting seat, and the output end of the positioning cylinder is fixedly connected to the positioning support to drive the positioning support to protrude from the top surface of the transmission wheel.

[0018] In one embodiment, the centering mechanism further includes: a plurality of alignment supports and an alignment cylinder; the plurality of alignment supports are located in the transmission direction of the transmission component, the plurality of alignment supports are located on the same straight line, and the straight line where the plurality of alignment supports are located extends longitudinally; the alignment cylinder is located between the supporting frames of the two centering mechanisms and below the alignment supports, and the output end of the alignment cylinder is fixedly connected to the alignment support to drive the alignment support to protrude from the top surface of the universal ball bearing to stop the plate.

[0019] In one embodiment, the centering mechanism also includes a shaft rod provided on the base frame and a protective wheel installed on the shaft rod; the shaft rod is provided on the base frame and extends longitudinally, the shaft rod is located on the side of the supporting frame, the shaft rod is located between the supporting frames of the two centering mechanisms, and is located above the supporting frames.

[0020] In one embodiment, the lifting frame includes a second lifting drive cylinder, a frame body, a second guide tube and a second guide rod; the second lifting drive cylinder is fixedly connected to the base frame; the frame body is located above the base frame, the frame body is fixedly connected to the output end of the second lifting drive cylinder, the frame body is lifted and lowered under the drive of the second lifting drive cylinder, and the transmission wheel protrudes from the top surface of the frame body; the second guide tube is vertically arranged on the base frame; the second guide rod is fixedly connected to the frame body, and the second guide rod is slidably arranged in the second guide tube.

[0021] In one embodiment, the centering mechanism also includes a photoelectric switch installed on the base frame and a controller electrically connected to the photoelectric switch; the photoelectric switch is arranged corresponding to the clamping station to detect whether the plate on the clamping station is in place; the controller is electrically connected to the transmission component, the lifting frame, the clamping component and the centering adjustment component to control the operation of the transmission component, the lifting frame, the clamping component and the centering adjustment component.

[0022] It can be seen from the above technical scheme that the advantages and positive effects of the present invention are: in the initial state, the top surface of the transmission wheel is higher than the top surface of the lifting frame. The transmission components of the two centering mechanisms work, and the two plates are moved to the corresponding clamping stations respectively, and the transmission components stop working. The lifting frames of the transmission components of the two centering mechanisms descend, so that the top surface of the transmission wheel is lower than the top surface of the support frame, and the plates on the lifting frame fall on the top surface of the support frame, and the plates are supported by the support frame. The centering position of one centering mechanism is located on the same straight line as the centering position of the other centering mechanism, and the two brackets of each centering mechanism are synchronously approached to each other in the longitudinal direction to clamp the plate, so that the transverse center line of the plate coincides with the centering position, and the plates on the two centering mechanisms are centered in the transverse direction. That is, under the action of the centering adjustment component, the transverse edges of the plates of the two centering mechanisms are parallel to each other, and the transverse center lines of the two plates are aligned. The clamping component works, pressing down the plate on the support frame to prevent the plate from shifting in the height direction. When the clamping arm of the clamping assembly moves, it drives the plate to move to the welding station in the transverse direction, so that the plates transmitted by the two centering mechanisms are aligned and welded at the welding position. Therefore, the centering device of the container box plate of the present invention can quickly and accurately realize the centering of the two plates through the centering adjustment assembly, and after the centering is realized, the plate is kept stable through the clamping assembly to ensure that the plate can still maintain the centering state during the subsequent movement to meet the welding requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] For ease of explanation, the present invention is described in detail with reference to the following preferred embodiments and the accompanying drawings.

[0024] Figure 1 It is a structural schematic diagram of a centering device for a container panel according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A top view of the centering device shown;

[0026] Figure 3 for Figure 1 A lateral side view of the centering device is shown;

[0027] Figure 4 for Figure 1 A longitudinal side view of the centering device shown;

[0028] Figure 5 This is a structural schematic diagram of a bottom frame of a centering device for a container panel according to an embodiment of the present invention;

[0029] Figure 6 for Figure 5 A top view of the chassis of the centering device is shown;

[0030] Figure 7 for Figure 5 A side view of the chassis of the centering device is shown;

[0031] Figure 8 This is a schematic structural diagram of a clamping assembly of a centering device for a container panel according to an embodiment of the present invention;

[0032] Fig. 9 for Figure 8 A bottom view of the clamping assembly of the centering device is shown;

[0033] Fig.10 for Figure 8 A lateral side view of the clamp assembly of the centering device is shown;

[0034] Fig.11 for Figure 8 A longitudinal side view of the clamping assembly of the centering device is shown;

[0035] Fig.12 It is a schematic structural diagram of a bracket of a clamping assembly of a centering device for a container panel according to an embodiment of the present invention.

[0036] Explanation of reference numerals: 1, chassis; 2, lifting frame; 21, frame body; 22, clamping station; 3, supporting frame; 31, first frame; 311, frame body; 32, second frame; 33, universal ball bearing; 34, top frame; 341, first lifting drive cylinder; 342, frame body; 37, welding station; 4, transmission assembly; 41, transmission wheel; 42, transmission motor; 43, transmission gear; 44, chain; 5, clamping assembly; 53, clamping arm; 54, drive driving motor; 6, centering adjustment assembly; 61, bracket; 611, bracket body; 612, centering support; 62, centering gear; 63, rack; 64, synchronous drive cylinder; 65, connecting rod; 66, slider; 67, centering slide rail; 68, centering position; 7, stopper assembly; 71, stopper; 81, positioning support; 82, positioning cylinder; 83, alignment support; 84, alignment cylinder; 9, protection assembly; 91, shaft; 92, protection wheel; 100, centering mechanism. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The invention provides a container plate centering device, which is used for quickly and accurately realizing the alignment of two plates to meet welding requirements.

[0041] Please refer to Figure 1 The directions in the coordinates are indicated by the arrows on the X-axis, the arrows on the Y-axis, and the arrows on the Z-axis.

[0042] See also Figures 1 to 4 In this embodiment, the centering device includes two centering mechanisms 100 that are arranged with relative spacing in the transverse direction, and the two centering mechanisms 100 are symmetrical about the longitudinal center line L.

[0043] Each centering mechanism 100 includes a base frame 1, at least one transmission component 4 mounted on the base frame 1 in a liftable manner, at least one supporting frame 3 for supporting a plate, a clamping component 5 for transmitting the plate laterally to a clamping station, and at least one centering adjustment component 6 arranged on the base frame 1.

[0044] The transmission assembly 4 includes a transmission wheel 41 and a lifting frame 2 . The lifting frame 2 is arranged on the base frame 1 , and the transmission wheel 41 is arranged on the top surface of the lifting frame 2 .

[0045] The number of the supporting frames 3 and the lifting frames 2 is not limited here, and can be determined according to the actual application and the specific size of the plate.

[0046] In a centering mechanism, the number of the supporting racks 3 differs from the number of the lifting racks 2 by one, and the number of the supporting racks 3 or the lifting racks 2 is at least two. Further, the number of the supporting racks 3 is an odd number, the number of the supporting racks 3 is at least three, the multiple supporting racks 3 are arranged at intervals in the longitudinal direction, the multiple supporting racks 3 are divided into a first rack 31 and at least two second racks 32, the second racks 32 are located on both sides of the first rack 31, and the number of the second racks 32 on one side of the first rack 31 is equal to the number of the second racks 32 on the other side of the first rack 31.

[0047] Of course, in the above-mentioned arrangement of the supporting racks 3 and the lifting racks 2, the position of the lifting racks 2 can also be interchanged with the position of the supporting racks 3, that is, the number of lifting racks 2 is an odd number, and the number of supporting racks 3 is an even number. At this time, the clamping assembly 5 is arranged on the two supporting racks 3 near the middle position of the base frame, and the smooth transmission of the plate can also be achieved.

[0048] See also Figures 1 to 7 Specifically, there are three supporting frames 3 and two lifting frames 2.

[0049] The support frame 3 is liftably arranged on the base frame 1 , and a universal ball bearing 33 is arranged on the top surface of the support frame 3 .

[0050] See also Figure 1 and Figure 2 The top edge of the support frame 3 has a welding station 37 (see Figure 2 In the middle rectangular dotted frame), specifically, in the lateral direction, the welding station 37 is located on the edge of the support frame 3 of the centering mechanism 100 close to the support frame 3 of another centering mechanism 100.

[0051] The three supporting frames 3 are arranged at intervals in the longitudinal direction. The three supporting frames 3 are divided into a first frame 31 and two second frames 32 . The two second frames 32 are located at both sides of the first frame 31 .

[0052] The first frame 31 includes three frames 311, and the three frames 311 are all mounted on the bottom frame in a movably manner. The three frames 311 are arranged at intervals in the longitudinal direction, and the universal ball bearings 33 are arranged on the top surfaces of the frames 311. Of course, the frames 311 of the first frame 31 can also be two, or more than three, and the frames 311 can be arranged at intervals in the longitudinal direction.

[0053] The centering mechanism further includes a top plate frame 34 which is escalably mounted on the bottom frame. The top plate frame 34 is located between the support frames 3 of the two centering mechanisms. It can be understood that the top plate frame 34 corresponds to the welding station. In one centering mechanism, the number of top plate frames 34 is equal to the number of support frames 3, and the top plate frames 34 correspond to the ends of the support frames 3 one by one. The width of the top plate frame 34 is equal to the width of the corresponding support frame 3.

[0054] The top plate frame 34 includes a frame body 342 located above the base frame 1, a first lifting drive cylinder 341 fixedly connected to the base frame 1, a first guide tube (not shown) vertically arranged on the base frame 1, and a first guide rod (not shown) slidably arranged in the first guide tube.

[0055] See also Figure 3 , the first guide rod is fixedly connected to the frame body 34. The output end of the first lifting drive cylinder 341 is connected to the frame body 34. For the deformed plate, the first lifting drive cylinder 341 drives the frame body 342 to rise, thereby lifting the plate on the welding station to adjust the position of the plate, so that the edges of the plates on the two centering mechanisms are at the same height, which is conducive to welding. A universal ball bearing is provided on the top surface of the frame body 34.

[0056] Of course, a structure in which the first guide tube is fixedly connected to the frame body 34 and the first guide rod is vertically fixed to the base frame 1 may also be adopted.

[0057] See also Figures 1 to 3 The two lifting frames 2 are respectively located on both sides of the first frame 31 , and each lifting frame 2 is located between the first frame 31 and the second frame 32 .

[0058] The lifting frame 2 includes a frame body 21 located above the base frame 1, a second lifting drive cylinder (not shown) fixedly connected to the base frame 1, a second guide tube (not shown) vertically arranged on the base frame 1, and a second guide rod (not shown) slidably arranged in the second guide tube.

[0059] The top edge of the frame body 21 is provided with a clamping station 22 (see Figure 2Specifically, in the transverse direction, the clamping station 22 is located on the top edge of the frame body 21 of the centering mechanism 100 away from the frame body 21 of the other centering mechanism 100. In other words, the two clamping stations 22 of the centering device are respectively located on the two opposite edges of the centering device in the transverse direction. In one centering device, the two clamping stations 22 are arranged at intervals in the transverse direction, and the welding station 37 is located between the two clamping stations 22.

[0060] The second guide rod is fixedly connected to the frame body 21. The output end of the second lifting drive cylinder is fixedly connected to drive the frame body 21 to move up and down.

[0061] Of course, a structure in which the second guide tube is fixedly connected to the frame body 21 and the second guide rod is vertically fixed to the base frame 1 may also be adopted.

[0062] The transmission assembly 4 is used to transmit the plate, and the transmission wheel 41 partially protrudes from the top surface of the frame body 21. The transmission wheel 41 rotates to transmit the plate in the transverse direction to the clamping station 22. The transmission wheel 41 can be a roller.

[0063] Furthermore, the transmission assembly 4 also includes a transmission motor 42, a transmission gear 43 fixed on the output shaft of the transmission motor 42, a transmission shaft (not shown) rotatably arranged under the lifting frame 2, a transmission gear (not shown) fixed on the transmission shaft, and a chain 44 sleeved on the transmission gear and the transmission gear 43.

[0064] The transmission shaft is rotatably connected to the frame body 21. The transmission shaft extends in the longitudinal direction. There are multiple transmission shafts, and the multiple transmission shafts are arranged at intervals in the transverse direction and are parallel to each other.

[0065] The transmission wheel 41 is fixed on the transmission shaft, and the top surface of the transmission wheel 41 contacts the plate.

[0066] The transmission motor 42 is fixedly connected to the frame body 21 and is located below the frame body 21. When the transmission motor 42 works, the transmission gear 43 rotates, so that the chain 44 drives the transmission gear to rotate, the transmission wheel 41 and the transmission shaft rotate synchronously, and the transmission wheel 41 transmits the plate.

[0067] The clamping assembly 5 includes a material transporting slide rail (not shown) extending in a transverse direction, a mounting seat (not shown) slidably disposed on the material transporting slide rail, and a clamping arm 53 disposed on the mounting seat.

[0068] The clamping arm 53 is located between two adjacent frames 311 and can extend out of the top surface of the universal ball bearing 33 on the frame 311. The clamping arm 53 can move downward to press the top surface of the plate on the universal ball bearing 33. It can be understood that the clamping arm 53 is upright.

[0069] Specifically, the clamping arm 53 includes a first cylinder (not shown), a second cylinder (not shown), a third cylinder (not shown), a first arm (not shown) rotatably connected to the mounting base, a second arm (not shown) rotatably connected to the first arm, and a third arm (not shown) rotatably connected to the second arm.

[0070] The first oil cylinder, the second oil cylinder, the third oil cylinder, the first arm, the second arm and the third arm are located on the same vertical plane and are located between two adjacent frames 311 .

[0071] Two ends of the first oil cylinder are rotatably connected to the mounting seat and the first arm respectively, so as to drive the first arm to rotate up and down relative to the mounting seat.

[0072] Two ends of the second oil cylinder are rotatably connected to the first arm and the second arm respectively, so as to drive the second arm to rotate up and down relative to the first arm.

[0073] The two ends of the third oil cylinder are rotatably connected to the second arm and the third arm respectively, so as to drive the third arm to rotate up and down relative to the second arm. The third arm is used to abut against the top surface of the plate downwards, so that the plate can be kept stable on the universal ball bearing 33.

[0074] The clamping arm 53 uses three oil cylinders and three arms to make the clamping arm more flexible. Of course, the clamping arm 53 can also use two oil cylinders and two arms, that is, the third oil cylinder and the third arm are eliminated, and the clamping arm can extend out of the top surface of the frame and press the plate downward, and retract to below the top surface of the frame. Alternatively, the clamping arm can also use one oil cylinder and one arm, that is, the second oil cylinder, the second arm, the third oil cylinder and the third arm are eliminated, and the plate is pressed by the first arm.

[0075] The material transport slide rail extends in the transverse direction and is fixedly connected to the bottom of the first frame 31 . In other words, the material transport slide rail is located in the first frame 31 and is fixedly connected to the first frame 31 .

[0076] The mounting seat is located in the frame 311 and is slidably connected to the material transporting slide rail. The mounting seat can move along the material transporting slide rail so that the clamping arm 53 drives the pressed plate to move to the waiting welding station 37 in the transverse direction.

[0077] The clamping assembly 5 further includes a driving motor 54 fixedly mounted below the first frame 31 and a lead screw (not shown) fixedly connected to the output end of the driving motor 54 .

[0078] The driving motor 54 is fixedly connected to the first frame 31 and is located in the first frame 31. The screw rod extends along the horizontal line and is threadedly connected to the mounting seat. Under the drive of the driving motor 54, the screw rod drives the mounting seat to move along the material transport slide rail.

[0079] Of course, the drive motor 54 and the material transport slide rail can also be installed on the top surface of the bottom frame 1. In this case, the working range of the clamping arm 53 and the lifting space of the first frame 31 can be adapted, that is, the clamping arm 53 can still be retracted to below the top surface of the transmission wheel 41 without affecting the operation of the transmission assembly 4, and the clamping arm 53 can extend from the top surface of the first frame 31 to press the plate so that the plate remains stable on the universal ball bearing 33. When the clamping arm 53 moves along the material transport slide rail with the mounting seat, it drives the plate to move in the X-axis direction.

[0080] See also Figures 8 to 11 Each centering adjustment assembly 6 includes two brackets 61 arranged opposite to each other in the longitudinal direction.

[0081] The bracket 61 is located outside the second frame 32 . Specifically, in one centering mechanism 100 , the three supporting frames 3 and the two lifting frames 2 are all located between the two brackets 61 .

[0082] See also Figure 1 There is a centering position 68 between the two brackets 61, and the distances from the two brackets 61 to the centering position 68 are equal. The two brackets 61 can move toward the centering position 68 synchronously along the longitudinal direction, so that the two brackets 61 clamp the plate at the welding station 37 and make the transverse center line of the plate 37 (that is, the center line along the X-axis direction) coincide with the centering position.

[0083] It is worth mentioning that the centering position 68 of one of the centering mechanisms 100 is located on the same straight line as the centering position 68 of the other centering mechanism 100, and the straight line where the centering positions 68 of the two centering mechanisms 100 are located extends laterally. Since the plate is rectangular, under the action of the centering adjustment component 6, the two brackets 61 clamp the plate on the universal ball bearing 33 at two opposite edges corresponding to the horizontal direction, and the edges corresponding to the longitudinal direction of the plates of the two centering mechanisms 100 are parallel to each other, and the horizontal center lines of the two plates are aligned, that is, the center line of the plate extends laterally. It can be understood that the center line is the symmetry line of a single plate.

[0084] See also Fig.12 The bracket 61 includes a bracket body 611 and a plurality of centering supports 612 fixedly connected to the top of the bracket body 611 .

[0085] The plurality of centering supports 612 are located on the same straight line, and the straight line where the plurality of centering supports 612 are located extends in the transverse direction. The centering supports 612 are used to contact the edge of the plate.

[0086] See also Figure 1 as well as Figures 8 to 11 Furthermore, the centering adjustment assembly 6 also includes a centering gear 62 located at the centering position 68 and two racks 63 arranged at intervals in the transverse direction.

[0087] The centering gear 62 is rotatably mounted on the base frame 1 .

[0088] The two racks 63 extend longitudinally. The two racks 63 are respectively located on both sides of the gear and mesh with the gear. The two racks 63 are fixedly connected to the two brackets 61 in a one-to-one correspondence.

[0089] Specifically, the centering adjustment component 6 also includes a synchronous drive cylinder 64, which is installed on the base frame 1. The output end of the synchronous drive cylinder 64 is fixedly connected to one of the racks 63 to drive the connected rack 63 to move longitudinally, and then the centering gear 62 meshing with the rack 63 rotates, and the other rack 63 meshing with the centering gear 62 moves longitudinally. Since the two racks 63 are located on both sides of the centering gear 62, the two racks 63 move toward or away from each other synchronously.

[0090] The centering adjustment assembly 6 further includes two connecting rods 65 extending in the longitudinal direction, a sliding block 66 fixed on the side of the connecting rod 65 and a centering slide rail 67 extending in the longitudinal direction.

[0091] Each rack 63 is connected to a bracket 61 through a connecting rod 65. The slide rail is fixed on the top surface of the base frame 1 and slidably cooperates with the slider 66 so that the slider 66 can move longitudinally, making the movement of the connecting rod 65 more stable, thereby making the movement of the bracket 61 more stable and improving the accuracy of the plate centering.

[0092] See also Figure 1 and Figure 2 The centering mechanism 100 further includes at least one stopper assembly 7. In this embodiment, each centering mechanism uses one stopper assembly 7. Of course, multiple stopper assemblies 7 may be used.

[0093] The stopper assembly 7 includes two stoppers 71 spaced apart in the longitudinal direction. The two stoppers 71 are respectively fixed on the edge portions of the two second frames 32 .

[0094] In a centering mechanism 100, all the lifting frames 2 and the supporting frames 3 are located between two stoppers 71, the distance between the two stoppers 71 is slightly larger than the longitudinal length of the plate, and the two stoppers 71 are used to stop the plate from escaping from the centering device in the longitudinal direction.

[0095] The stopper 71 includes a stopper plate, which is parallel to the horizontal direction and upright. When the plate deviates, the stopper plate contacts the plate to play a guiding role.

[0096] The centering mechanism 100 further includes a positioning cylinder 82 and a plurality of positioning supports 81 fixedly connected to the output end of the positioning cylinder 82 .

[0097] The plurality of positioning supports 81 are located in the transmission direction of the transmission component 4 , and the plurality of positioning supports 81 are located on the same straight line, and the straight line where the plurality of positioning supports 81 are located extends in the longitudinal direction.

[0098] The cylinder body of the positioning cylinder 82 is fixedly connected to the mounting seat and is located in the first frame 31 .

[0099] There are multiple positioning cylinders 82, and the multiple positioning cylinders 82 are fixedly connected to the multiple positioning backers 81 in a one-to-one correspondence. The positioning cylinders 82 and the clamping arms 53 are arranged at intervals in the longitudinal direction.

[0100] The positioning cylinder 82 is located below the positioning support 81, and the output end of the positioning cylinder 82 is fixedly connected to the positioning support 81 to drive the positioning support 81 to protrude from the top surface of the transmission wheel 41 to stop the plate. Of course, when the transmission assembly 4 transmits the plate to feed or discharge, the positioning cylinder 82 drives the positioning support 81 to retract below the top surface of the transmission wheel 41.

[0101] The centering mechanism also includes an alignment cylinder 84 and a plurality of alignment supports 83 fixedly connected to the output end of the alignment cylinder 84 .

[0102] The plurality of alignment supports 83 are located in the transmission direction of the transmission assembly 4. The plurality of alignment supports 83 are located on the same straight line, and the straight line where the plurality of alignment supports 83 are located extends in the longitudinal direction. The alignment supports 83 are located between the top plate frames 34 of the two centering mechanisms.

[0103] The alignment cylinder 84 is fixedly connected to the base frame 1 and is located outside the support frame 3 and the lifting frame 2. There are multiple alignment cylinders 84, and the multiple alignment cylinders 84 are connected to the multiple alignment backers 83 in a one-to-one correspondence.

[0104] The alignment cylinder 84 is located below the alignment support 83, and the output end of the alignment cylinder 84 is fixedly connected to the alignment support 83 to drive the positioning support 81 to protrude from the top surface of the universal ball bearing 33 to stop the plate. Of course, when the transmission component 4 transmits the plate to feed or discharge, the alignment cylinder 84 drives the alignment support 83 to retract to below the top surface of the transmission wheel 41.

[0105] Of course, the alignment cylinder 84 can also be fixedly connected to the top plate frame 34 or the lifting frame 2, so that the alignment backer 83 still has the function of exceeding the top surface of the universal ball bearing 33 and shrinking to below the top surface of the transmission wheel 41.

[0106] The centering mechanism 100 further comprises a protection component 9. In the transverse direction, the protection component 9 is located between the alignment backing 83 of one centering mechanism 100 and the alignment backing 83 of another centering mechanism 100.

[0107] Specifically, the protection assembly 9 includes a shaft rod 91 disposed on a side of the base frame 1 and a protection wheel 92 mounted on the shaft rod 91 .

[0108] The shaft 91 is fixedly connected to the base frame 1 and extends longitudinally. The shaft 91 is located outside the lifting frame 2. In the centering device, the shafts 91 of the two centering mechanisms 100 are located between the alignment backings 83 of the two centering mechanisms 100. The shaft 91 is located above the top surface of the support frame.

[0109] The protection wheel 92 can rotate on the shaft 91. The top surfaces of the protection wheels 92 of the two centering mechanisms 100 are flush. The plate passes under the protection wheel 92.

[0110] The protection component 9 plays a role in protecting the panel welding machine and preventing the plate from hitting the upper bracket of the panel welding machine.

[0111] The centering mechanism 100 further includes a photoelectric switch (not shown) mounted on the base frame 1 and a controller (not shown) electrically connected to the photoelectric switch.

[0112] The photoelectric switch is arranged corresponding to the clamping station 22 to detect whether the plate on the clamping station 22 is in place. The photoelectric switch is installed on the edge of the base frame 1 and is located below the clamping station 22. The photoelectric switch is located outside the lifting frame 2. There are two photoelectric switches for a centering mechanism 100, and the two photoelectric switches are arranged at intervals in the longitudinal direction.

[0113] The controller is electrically connected to the transmission component 4, the first lifting drive cylinder 35, the second lifting drive cylinder, the first oil cylinder, the second oil cylinder, the third oil cylinder, the drive motor 54, the transmission motor 42, the positioning cylinder 82 and the alignment cylinder 84, so that the transmission component 4, the first lifting drive cylinder 35, the second lifting drive cylinder, the first oil cylinder, the second oil cylinder, the third oil cylinder, the drive motor 54, the transmission motor 42, the positioning cylinder 82 and the alignment cylinder 84 work in coordination with each other.

[0114] The photoelectric switch transmits the detected data to the controller. If the plate on the frame body reaches the clamping station 22, the controller drives the second lifting drive cylinder to drive the frame body to descend. If the plate on the frame body does not reach the clamping station 22, the controller drives the transmission motor 42 to work, and the transmission wheel 41 rotates to adjust the position of the plate until the plate is in place.

[0115] See also Figures 1 to 12 The working principle of the embodiment of the present application is as follows: in the initial state, the top surfaces of the transmission wheels 41 of the two centering mechanisms 100 are flush with each other, the top surface of the universal ball bearing 33 is located below the top surface of the transmission wheel, the clamping arm 53 is retracted to the bottom of the universal ball bearing 33 and is located at the edge of the support frame 3, the spacing between the two brackets 61 of the centering adjustment assembly 6 is greater than the longitudinal length of the plate, the positioning backing 81 is retracted to the bottom of the transmission wheel, and the alignment backing 83 is retracted to the bottom of the universal ball bearing 33.

[0116] A plate is placed on the transmission wheel 41 of one centering mechanism 100, and the positioning cylinder 82 of the other centering mechanism 100 drives the positioning backing 81 to protrude from the top surface of the transmission wheel 41. The transmission motors 42 of the two centering mechanisms 100 work, and the transmission wheels 41 of the two centering mechanisms 100 rotate in the same direction. The plate is transmitted from one centering mechanism 100 to the other centering mechanism 100 until the plate moves to the clamping station 22 of the other centering mechanism 100, and the plate contacts the positioning backing 81. The photoelectric switch of the other centering mechanism 100 detects whether the plate is in place.

[0117] When the plate is in place, a plate is placed on the centering mechanism 100 without a plate, the transmission motor 42 of the centering mechanism 100 works, the transmission wheel 41 of the centering mechanism 100 rotates, and the rotation direction of the transmission wheel 41 is the same as the rotation direction when the previous plate is transmitted, and when the plate is a certain distance away from the protection wheel 92 of the centering mechanism 100, the positioning cylinder 82 of the centering mechanism 100 drives the positioning backer 81 to protrude from the top surface of the transmission wheel 41, and the transmission motor 42 drives the transmission wheel 41 to rotate in the opposite direction, that is, the rotation direction of the transmission wheel 41 is opposite to the rotation direction when the previous plate is transmitted, so that the plate moves away from the protection wheel 92 to the clamping station 22, and the photoelectric switch of the centering mechanism 100 detects whether the plate is in place. At this time, the second lifting drive cylinders of the two centering mechanisms 100 work, driving the frame body 21 to descend, so that the transmission wheel descends to below the top surface of the universal ball bearing 33, so that the plate is supported by the universal ball bearing 33 alone.

[0118] The centering adjustment components 6 of each centering mechanism 100 synchronously drive the cylinder 64 to work, the two racks 63 of the centering adjustment component 6 move toward each other, and the corresponding two brackets 61 approach each other synchronously. The two brackets 61 clamp the plate in the longitudinal direction. Since the plate is rectangular, and the centering position 68 of one centering mechanism 100 is located on the same straight line as the centering position 68 of the other centering mechanism 100, the straight line where the centering positions 68 of the two centering mechanisms 100 are located extends laterally. Therefore, under the action of the centering adjustment component 6, the edges of the two plates are parallel to each other, and the transverse center lines of the two plates are aligned.

[0119] The alignment cylinders 84 of the two centering mechanisms 100 drive the alignment backing 83 to protrude from the top surface of the universal ball bearing 33. The first oil cylinder, the second oil cylinder and the third oil cylinder of the two centering mechanisms 100 work in coordination with each other, so that the third arm extends upward from the top surface of the frame 311 and presses down the plate on the universal ball bearing 33. The drive motor 54 drives the screw rod to rotate, and the mounting seat moves along the material transport slide rail, so that the clamping arm 53 moves the plate laterally on the universal ball bearing 33, and the positioning backing 81 pushes the plate, and the plates on the two centering mechanisms 100 approach each other. When both plates move to contact with their corresponding alignment backing 83, the plate, the mounting seat and the drive motor 54 stop working, and the plate reaches the waiting welding station 37. The alignment cylinders 84 of the two centering mechanisms 100 drive the alignment backing 83 to retract downward, and adjust the pulse width ratio of the drive motor to accurately control the plate from the waiting welding station 37 to the welding station (i.e., the position of the straight line L). Afterwards, the plate continues to move in the X-axis direction under the action of the driving motor 54 of the clamping assembly 5 until it reaches Figure 2 The welding position of the center line L. In this way, the plate can accurately reach the corresponding welding station. The centering device quickly and accurately realizes the alignment of the two plates, meets the welding requirements, greatly reduces the difficulty of operation for the staff, and has high production efficiency.

[0120] After the two plates are welded, they are welded into a plate body. The first oil cylinder, the second oil cylinder and the third oil cylinder work together to lift the third arm away from the plate and retract to the bottom of the universal ball bearing 33. The second lifting drive cylinder works to drive the frame body 21 to rise, and the transmission wheel 41 rises accordingly, so that the top surface of the transmission wheel 41 moves between the top surface of the universal ball bearing and the bottom surface of the protection wheel, and the plate is supported by the transmission wheel 41 alone. The transmission motors 42 of the two centering mechanisms 100 work, and the transmission wheels 41 of the two centering mechanisms 100 rotate in the same direction to output the welded plate body. It can be understood that the transmission direction of the feeding of the centering device is opposite to the transmission direction of the discharging.

[0121] In other embodiments not shown in the figure, the centering adjustment component may not use a synchronous drive cylinder, but a motor, and the motor is fixedly connected to the base frame, and the output shaft of the motor is fixedly connected to the centering gear to drive the centering gear to rotate, so that the two racks are synchronously approached or moved away from each other in the longitudinal direction.

[0122] In other embodiments not shown, the centering adjustment assembly may use two linear actuators connected to the two brackets respectively, both linear actuators are fixed on the top surface of the base frame, and the output shaft of the linear actuator extends longitudinally, which can also achieve synchronous approach or separation of the two brackets.

[0123] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. 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 may be combined in any one or more embodiments or examples in a suitable manner.

[0124] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A container panel centering device, characterized in that: The invention comprises two centering mechanisms arranged in a relative spacing in the transverse direction, each centering mechanism comprising: chassis; At least one supporting frame, the supporting frame is mounted on the base frame to support the plate; At least one transmission assembly, used for transmitting the plate, the transmission assembly comprising a transmission wheel and a lifting frame, the lifting frame is arranged on the bottom frame, the transmission wheel is arranged on the top surface of the lifting frame, and is used for transmitting the plate to the clamping station in the transverse direction; At least one centering adjustment assembly, each of which includes two brackets arranged opposite to each other in the longitudinal direction, the brackets are located outside the support frame, and there is a centering position between the two brackets, and the two brackets can be synchronously moved toward the centering position in the longitudinal direction, so that the two brackets clamp the plate and make the transverse center line of the plate coincide with the centering position, wherein the centering position of one centering mechanism and the centering position of the other centering mechanism are located on the same straight line, and the straight line where the centering positions of the two centering mechanisms are located extends in the transverse direction; A clamping assembly, used to press the top surface of the plate to keep the plate stable when the plate is being transported, and the clamping arm of the clamping assembly drives the plate to move in the transverse direction to the welding station when the clamping arm moves, so that the plates transported by the two centering mechanisms are aligned and welded at the welding position; The centering adjustment component also includes: A centering gear, which is capable of rotating and is located at the centering position; The two racks are arranged at intervals in the transverse direction, and both of the racks extend in the longitudinal direction. The two racks are respectively located on both sides of the centering gear and are meshed with the centering gear. The two racks are fixedly connected to the two brackets in a one-to-one correspondence.

2. The centering device according to claim 1, characterized in that: The centering adjustment assembly also includes a synchronous drive cylinder, which is installed on the base frame. The output end of the synchronous drive cylinder is fixedly connected to one of the racks so that the two racks move synchronously in the longitudinal direction.

3. The centering device according to claim 1, characterized in that: The centering gear is rotatably mounted on the base frame; the centering adjustment assembly also includes: Two connecting rods, each of the racks is connected to one of the brackets through one of the connecting rods; A slider, fixed on the side of the connecting rod; The centering slide rail extends in the longitudinal direction. The centering slide rail is fixed on the base frame and slidably cooperates with the slider to enable the slider to move in the longitudinal direction.

4. The centering device according to claim 1, characterized in that: The distances from the two brackets to the centering position are equal, and each bracket comprises: The bracket body; A plurality of centering supports are fixedly connected to the top of the bracket body, the plurality of centering supports are located on the same straight line, the straight line where the plurality of centering supports are located extends laterally, and the centering supports are used to contact the edge of the plate.

5. The centering device according to claim 1, characterized in that: The clamping assembly comprises a material transporting slide rail extending in the transverse direction, a mounting seat slidably arranged on the material transporting slide rail, and the clamping arm arranged on the mounting seat.

6. The centering device according to claim 5, characterized in that: The material transport slide rail is fixedly connected to the bottom of the support frame, and the clamping assembly also includes: A driving motor is installed and fixed below the supporting frame; The lead screw is fixedly connected to the output end of the driving motor and is threadedly connected to the mounting seat to drive the mounting seat to move along the material transport slide rail.

7. The centering device according to claim 5, characterized in that: In one of the centering mechanisms, there are three support frames, the three support frames are arranged at intervals in the longitudinal direction, the three support frames are divided into a first frame and two second frames, the two second frames are located on both sides of the first frame, and the material transport slide rail is fixedly connected to the first frame; The first frame includes three frames, the three frames are arranged at intervals in the longitudinal direction, and the top surfaces of the frames are provided with universal ball bearings; There are two lifting frames, the two lifting frames are respectively located on both sides of the first frame, and each lifting frame is located between the first frame and the second frame; The mounting seat is located in the first frame, and the clamping arm is located between two adjacent frames and can extend out of the top surface of the universal ball bearing on the frame.

8. The centering device according to claim 7, characterized in that: The centering mechanism further comprises at least one stopper assembly, wherein the stopper assembly comprises two stoppers arranged at intervals in the longitudinal direction, and the two stoppers are respectively fixed on the two second frames; In one of the centering mechanisms, the two second frames are located between the two stoppers, and the stoppers are used to stop the plate from longitudinally separating from the centering mechanism.

9. The centering device according to claim 5, characterized in that: The clamping arm comprises: A first arm, rotatably connected to the mounting seat; a second arm, rotatably connected to the first arm; A third arm is rotatably connected to the second arm and is used to abut against the top surface of the plate; a first oil cylinder, two ends of which are rotatably connected to the mounting base and the first arm respectively, so as to drive the first arm to rotate up and down relative to the mounting base; a second oil cylinder, two ends of which are rotatably connected to the first arm and the second arm respectively, so as to drive the second arm to rotate up and down relative to the first arm; The third oil cylinder has two ends rotatably connected to the second arm and the third arm respectively, so as to drive the third arm to rotate up and down relative to the second arm.

10. The centering device according to claim 1, characterized in that: The centering mechanism further comprises a top plate frame which is escalably arranged on the bottom frame, and the top plate frame is located between the two supporting frames of the centering mechanism, and the top plate frame comprises: A frame body is located above the base frame, and a universal ball bearing is installed on the top surface of the frame body; A first lifting drive cylinder is fixedly connected to the base frame, and an output end of the first lifting drive cylinder is connected to the frame body; A first guide tube, vertically arranged on the base frame; The first guide rod is fixedly connected to the frame body and slidably disposed in the first guide tube.

11. The centering device according to claim 1, characterized in that: The transmission component also includes: A transmission motor, fixedly connected to the lifting frame; A transmission gear, fixed on the output shaft of the transmission motor; A transmission shaft extending in the longitudinal direction and rotatably disposed below the lifting frame, and the transmission wheel is fixed on the transmission shaft; A transmission gear, fixed on the transmission shaft; A chain is sleeved on the transmission gear and the transmission gear.

12. The centering device according to claim 5, characterized in that: The mounting seat is located in the supporting frame, and the centering mechanism further comprises: A plurality of positioning supports are located in the transmission direction of the transmission component, the plurality of positioning supports are located on the same straight line, and the straight line where the plurality of positioning supports are located extends in the longitudinal direction; The positioning cylinder is located below the positioning backer and fixed on the mounting seat. The output end of the positioning cylinder is fixedly connected to the positioning backer to drive the positioning backer to protrude from the top surface of the transmission wheel.

13. The centering device according to claim 1, characterized in that: The centering mechanism also includes: A plurality of alignment supports are located in the transmission direction of the transmission component, the plurality of alignment supports are located on the same straight line, and the straight line where the plurality of alignment supports are located extends in the longitudinal direction; The alignment cylinder is located between the support frames of the two centering mechanisms and below the alignment backer. The output end of the alignment cylinder is fixedly connected to the alignment backer to drive the alignment backer to protrude from the top surface of the universal ball bearing of the support frame to stop the plate.

14. The centering device according to claim 1, characterized in that: The centering mechanism also includes a shaft rod disposed on the base frame and a protection wheel mounted on the shaft rod; The shaft rod is arranged on the base frame and extends in the longitudinal direction. The shaft rod is located at the side of the supporting frame, between the supporting frames of the two centering mechanisms, and above the supporting frames.

15. The centering device according to claim 1, characterized in that: The lifting frame comprises: A second lifting drive cylinder is fixedly connected to the base frame; A frame body is located above the base frame, the frame body is fixedly connected to the output end of the second lifting drive cylinder, the frame body is lifted and lowered under the drive of the second lifting drive cylinder, and the transmission wheel protrudes from the top surface of the frame body; A second guide tube is vertically arranged on the base frame; The second guide rod is fixedly connected to the frame body, and the second guide rod is slidably arranged in the second guide tube.

16. The centering device according to claim 1, characterized in that: The centering mechanism further includes a photoelectric switch mounted on the base frame and a controller electrically connected to the photoelectric switch; The photoelectric switch is arranged corresponding to the clamping station to detect whether the plate on the clamping station is in place; The controller is electrically connected to the transmission component, the lifting frame, the clamping component and the centering adjustment component to control the operation of the transmission component, the lifting frame, the clamping component and the centering adjustment component.

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