Centering device of press machine

Abstract

The utility model discloses a centering device of a press machine, which comprises a movable frame, a centering frame is arranged at the top end of the movable frame, a plurality of centering wheels are rotatably arranged in the centering frame, a quick connecting sleeve is arranged on the centering frame, a connecting rod is arranged on the inner side of the quick connecting sleeve, a surrounding plate is rotatably arranged on the outer side of the quick connecting sleeve, an arrangement groove is arranged on the surrounding plate, and a limiting sleeve is sleeved on the outer side of the quick connecting sleeve. A vertical plate is arranged on one side of the vertical plate, a transverse plate is arranged on one side of the vertical plate, a rotary sleeve is rotationally arranged on the outer side of the quick connection sleeve, a configuration groove is formed in the inner side of the rotary sleeve, a rotary frame is arranged on one side of the rotary sleeve, a limiting rod is slidably arranged in the rotary frame, a limiting plate is arranged at one end of the limiting rod, and a release plate is arranged in the configuration groove. A quick connecting plate is arranged in the movable groove, rotating shafts are arranged on the two sides of the quick connecting plate, a plurality of limiting grooves are formed in the outer side of the quick connecting sleeve, and a quick connecting block is arranged on one side of the releasing plate. According to the quick connecting device for the centering frame, the centering frame can be disassembled and assembled conveniently without assistance of tools, and the structural stability of installation of the centering frame is guaranteed synchronously.

Description

TECHNICAL FIELD

[0001] The utility model relates to a press machine technical field more specifically, it relates to a centering device of press machine. BACKGROUND

[0002] Regarding the centering device of press machine, the prior art usually needs to set up the centering frame to configure the roller to carry out the centering operation, however the installation and dismounting of the centering frame in the prior art usually need to assist operation by means of tools, such as special wrench, screwdriver and a variety of professional tools, and the operation steps are complicated, more importantly, when facing the processing demand of different specifications workpieces, the centering frame of different sizes and configuration needs to be replaced to adapt to the geometric characteristics of the workpiece, the traditional centering frame fixing mode cannot realize the convenient dismounting of the centering frame without tool assistance, not only a large amount of time and manpower cost are consumed, but also the centering frame can be damaged because of the tool mismatch or improper operation, thereby the flexible replacement of the centering frame specification cannot be realized, which seriously affects the continuity and efficiency of the production line, especially in the multi-variety small-batch production mode, the frequent change type requirement makes this problem more prominent.

[0003] Secondly, although some devices realize the convenient installation and dismounting of the centering frame through the cooperation of some components, thereby realizing the convenient replacement of the centering frame, but the structure design is too simple, lacks multiple locking mechanism and anti-interference protection measures, and the stability is not high, under the comprehensive influence of the vibration and impact load of the press machine and various adverse factors such as mechanical impact, the fixing structure can be accidentally loosened due to the violent vibration, impact force fluctuation and other external factors generated during the operation of the device, this unstable connection state not only can cause the serious deviation of the centering precision, affect the size precision and surface quality of the processed workpiece, more seriously, can cause the safety accident of the sudden falling of the centering frame, and threatens the personal safety of the operator, in addition, the unstable centering frame can also produce abnormal noise and vibration, aggravate the abrasion of the related components, shorten the service life of the device, increase the maintenance cost and downtime, seriously affect the normal execution of the production plan, and bring adverse effects. CONTENT OF THE UTILITY MODEL

[0004] (I) technical problem solved

[0005] In view of the problems in the prior art, the utility model provides a centering device of press machine to solve the technical problems mentioned in the background art.

[0006] (II) technical scheme

[0007] To achieve the above object, the utility model provides following technical scheme: A centering device of press machine, movable frame is detachable with centering frame on the top, a plurality of centering wheels are rotatably installed in the centering frame, quick coupling sleeve is detachable on the centering frame, connecting rod is detachable on the inner side of quick coupling sleeve, the connecting rod is fixedly installed on the top of movable frame, the outer side of quick coupling sleeve is rotatably provided with encircling plate, the encircling plate is provided with arrangement groove, the outer side of quick coupling sleeve is slidably provided with limiting sleeve, the limiting sleeve is connected with vertical plate on one side, the vertical plate is fixedly provided with horizontal plate on one side, the horizontal plate is provided with three, the outer side of quick coupling sleeve is rotatably provided with convolution sleeve, the inner side of convolution sleeve is provided with configuration groove in the form of variable diameter, the convolution sleeve is fixedly provided with convolution frame on one side, the limiting rod is slidably arranged in the convolution frame, the limiting rod is fixedly connected with limiting plate on one end, the configuration groove is slidably provided with release plate, the outer side of connecting rod is provided with movable slot, the movable slot is provided with quick joint plate, the quick joint plate is provided with rotating shaft on both sides, the quick joint plate is rotatably installed in movable slot through rotating shaft, the outer side of quick coupling sleeve is provided with a plurality of limiting grooves, the limiting rod is inserted into the limiting groove on one end, the release plate is connected with quick joint block on one side, and the quick joint block abuts on one end of quick joint plate on one side.

[0008] The utility model further provides that the bottom of the centering frame is provided with a bearing table, the top of the bearing table is provided with a moving groove, the inner side of the bearing table is detachably provided with a base, a rotating table is rotatably arranged on the base, connecting rods are detachably arranged on both sides of the rotating table, the connecting rods are rotatably connected with connecting arms on one end, the connecting arms are rotatably connected with the movable frames on the other end, one side of one movable frame is detachably provided with a cylinder, a piston rod is connected to the output end of the cylinder, the other end of the piston rod is detachably connected with the other movable frame, and the automatic collaborative movement of the centering device is realized by the structure design, the piston rod is driven by the cylinder to move the movable frame, and then a linkage mechanism is formed by the connecting arms, the connecting rods, and the rotating table, so that the two movable frames move synchronously inward, and the centering precision and stability are improved.

[0009] The utility model further provides that the base is detachably provided with sliding rails, and the movable frames are detachably provided with sliding blocks, the sliding blocks are slidably connected with the sliding rails, and the sliding connection structure of the sliding rails and the sliding blocks provides stable linear guide support for the movable frames, so that the movable frames move stably along the predetermined track without deflection or shaking during movement.

[0010] The utility model further sets up, link rod outside is equipped with guide groove, the inside fixed establishment of quick link cover is equipped with guide strip, the guide groove is fited with guide strip, and the fited design of guide groove and guide strip ensures that quick link cover can slide along the predetermined track accurately in the process of installation and dismounting, avoids the jam or connection failure caused by position deviation, and simultaneously this guide structure can also effectively prevent quick link cover from rotating or deviating in the connected state, strengthens the stability and reliability of quick connection structure.

[0011] The utility model further sets up, the one side of restriction cover is equipped with restoring spring, the restoring spring movable cover is equipped outside quick link cover, and the setting of restoring spring provides the continuous elastic return force for restriction cover, ensures that restriction cover can return to the original position automatically under the action of elastic force after the operator releases restriction cover.

[0012] The utility model further sets up, the one side of quick connection board is equipped with tension spring, the other end of tension spring is connected with movable groove inner wall, and the setting of tension spring can make quick connection board rotate to the locking position automatically after releasing restriction, realizes the automatic reset function of quick connection board, can complete the locking action without manual adjustment of quick connection board position of operator, greatly simplifies the operation process, and improves work efficiency.

[0013] The utility model further sets up, the one side of ring around board is detachably equipped with axial bearing, the other end of restoring spring is connected with axial bearing, and the axial bearing is the thrust bearing structure design, and the axial bearing adopts the thrust bearing structure design, can effectively bear the axial load in the rotating process of ring around board, ensures that ring around board can still rotate stably under the stress state, avoids the mutual interference of spring force and rotating force, and remarkably improves the flexibility of ring around board rotation.

[0014] The utility model further sets up, the outside movable cover of restriction rod is equipped with pull spring, and both ends of pull spring are connected with limiting plate and gyration frame respectively.

[0015] (Three) beneficial effect

[0016] Compared with the prior art, the utility model provides a centering device of press machine, has the following

[0017] Beneficial effect:

[0018] 1. Through the innovative quick connection structure, the technical problem that the traditional centering frame needs to be installed and disassembled with the help of professional tools is solved, the structure design adopts the clamping connection mode of the connecting rod and the quick coupling sleeve, and a linkage structure composed of a rotating sleeve and other components is matched, tool-free connection and disconnection of the centering frame and the movable frame are realized, when the centering frame needs to be replaced, only the rotating sleeve is rotated in the forward direction, the rotating sleeve drives the preparation groove of the variable diameter structure to rotate, the release plate and the quick connecting block are moved, the quick connecting block no longer abuts against the quick connecting plate, and finally the quick coupling sleeve is pulled out to complete disassembly; when reinstalling, only the quick coupling sleeve is sleeved to the outside of the connecting rod, and the rotating sleeve is reversely rotated, so that locking and fixing are completed, the whole operation process does not need any professional tool assistance, the operation is simple and intuitive, the centering frame replacement efficiency and emergency response capability are greatly improved, even in the case of tool loss or mismatch, the operation can be easily completed, the production line downtime loss and operation error risk caused by complex connection operation are avoided, especially in the multi-variety small-batch production mode, the frequent type changing demand can be quickly responded, and the practicality and user experience of the equipment are significantly improved.

[0019] 2. Through the multiple locking and stabilizing system designed, the problem of lack of stability of the traditional centering device connection structure is solved, the structure adopts the accurate plug-in cooperation of the limiting rod and the limiting groove, forms a mechanical locking, and the rotating limiting mechanism of the surrounding plate and the limiting sleeve is supported and limited to one side of the surrounding plate through the vertical plate and the horizontal plate, and a second anti-loosening insurance is formed. The multiple locking and stabilizing design makes the connection structure be able to effectively resist the influence of vibration, impact load and external mechanical impact and other adverse factors in the operation process of the press, even under severe working conditions, the stability of the connection can be maintained, the deviation of the centering accuracy and the safety accident caused by the accidental loosening of the centering frame are effectively prevented, the personal safety of the operator and the machining quality of the workpiece are ensured, the abrasion of the related parts is reduced, the maintenance cost and downtime are reduced, and strong support is provided for the normal execution and sustainable development of the production plan of the enterprise, and the safety, reliability and economic benefit of the process system of the press are significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic view of a centering device of a press in the utility model;

[0021] Figure 2 It is a structure schematic view of the utility model in which the bearing table and the centering frame part are removed;

[0022] Figure 3 It is a dispersed structure schematic view of the connecting rod part and the quick coupling sleeve part in the utility model;

[0023] Figure 4The utility model discloses a fast joint cover, fast joint plate, gyration cover, limit cover and encircle board part's sectional view structure schematic diagram.

[0024] Figure 5 The utility model discloses a connecting rod, fast joint cover, limit rod, gyration cover, limit cover and encircle board part's dispersion structure schematic diagram.

[0025] In the drawing: 1, movable frame;2, centering frame;3, centering wheel;4, fast joint cover;5, connecting rod;6, encircle board;7, arrangement groove;8, limit cover;9, vertical plate;10, horizontal plate;11, gyration cover;12, configuration groove;13, gyration frame;14, limit rod;15, limit plate;16, release plate;17, movable groove;18, fast joint plate;19, rotation shaft;20, limit groove;21, fast joint block;22, bearing table;23, moving groove;24, base;25, rotary table;26, connecting rod;27, connecting arm;28, air cylinder;29, piston rod;30, slide rail;31, sliding block;32, guide groove;33, guide strip;34, restoring spring;35, tension spring;36, axial bearing;37, pull spring. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all the technical and scientific terms used in the present application have the same meaning as that generally understood by the ordinary skilled person in the technical field to which the present application belongs.

[0028] In the present application, the orientation such as "up, down" is generally directed to the direction shown in the drawings, or is directed to the vertical, perpendicular or gravity direction, unless otherwise specified. Similarly, for the convenience of understanding and description, "left, right" is generally directed to the left and right shown in the drawings, and "inner, outer" is directed to the inner and outer relative to the contour of each component, but the above orientation words are not used to limit the present application.

[0029] Please refer to Figures 1-5The utility model relates to a centering device of a press machine, including movable frame 1, the top of movable frame 1 is detachably equipped with centering frame 2, a plurality of centering wheels 3 are rotatably installed in centering frame 2, detachably equipped with quick coupling sleeve 4 on centering frame 2, the inner side of quick coupling sleeve 4 is detachably equipped with connecting rod 5, and connecting rod 5 is fixedly installed at the top of movable frame 1, and the outer side of quick coupling sleeve 4 is rotatably equipped with encircling plate 6, and the encircling plate 6 is equipped with arrangement groove 7, and the outer side of quick coupling sleeve 4 is slidably equipped with limiting sleeve 8, and the one side of limiting sleeve 8 is connected with vertical plate 9, and the one side of vertical plate 9 is fixed with horizontal plate 10, and horizontal plate 10 is provided with three, and the outer side of quick coupling sleeve 4 is rotatably equipped with convolution sleeve 11, and the inner side of convolution sleeve 11 is equipped with configuration groove 12 in the form of variable diameter, and the one side of convolution sleeve 11 is fixed with convolution frame 13, and limiting rod 14 is slidably arranged in convolution frame 13, and the one end of limiting rod 14 is fixedly connected with limiting plate 15, and release plate 16 is slidably arranged in configuration groove 12, and the outer side of connecting rod 5 is equipped with movable slot 17, and quick connecting plate 18 is arranged in movable slot 17, and the both sides of quick connecting plate 18 are equipped with rotary shaft 19, and quick connecting plate 18 is rotatably installed in movable slot 17 through rotary shaft 19, and a plurality of limiting grooves 20 are formed in the outer side of quick coupling sleeve 4, and the one end of limiting rod 14 is inserted into limiting groove 20, and quick connecting block 21 is connected on the one side of release plate 16, and the one side of quick connecting block 21 abuts on the one end of quick connecting plate 18.

[0030] The utility model relates to a centering device of a press machine, including movable frame 1, the top of movable frame 1 is detachably equipped with centering frame 2, a plurality of centering wheels 3 are rotatably installed in centering frame 2, detachably equipped with quick coupling sleeve 4 on centering frame 2, the inner side of quick coupling sleeve 4 is detachably equipped with connecting rod 5, and connecting rod 5 is fixedly installed at the top of movable frame 1, and the outer side of quick coupling sleeve 4 is rotatably equipped with encircling plate 6, and the encircling plate 6 is equipped with arrangement groove 7, and the outer side of quick coupling sleeve 4 is slidably equipped with limiting sleeve 8, and the one side of limiting sleeve 8 is connected with vertical plate 9, and the one side of vertical plate 9 is fixed with horizontal plate 10, and horizontal plate 10 is provided with three, and the outer side of quick coupling sleeve 4 is rotatably equipped with convolution sleeve 11, and the inner side of convolution sleeve 11 is equipped with configuration groove 12 in the form of variable diameter, and the one side of convolution sleeve 11 is fixed with convolution frame 13, and limiting rod 14 is slidably arranged in convolution frame 13, and the one end of limiting rod 14 is fixedly connected with limiting plate 15, and release plate 16 is slidably arranged in configuration groove 12, and the outer side of connecting rod 5 is equipped with movable slot 17, and quick connecting plate 18 is arranged in movable slot 17, and the both sides of quick connecting plate 18 are equipped with rotary shaft 19, and quick connecting plate 18 is rotatably installed in movable slot 17 through rotary shaft 19, and a plurality of limiting grooves 20 are formed in the outer side of quick coupling sleeve 4, and the one end of limiting rod 14 is inserted into limiting groove 20, and quick connecting block 21 is connected on the one side of release plate 16, and the one side of quick connecting block 21 abuts on the one end of quick connecting plate 18.

[0031] The utility model relates to a centering device of a press machine, including movable frame 1, the top of movable frame 1 is detachably equipped with centering frame 2, a plurality of centering wheels 3 are rotatably installed in centering frame 2, detachably equipped with quick coupling sleeve 4 on centering frame 2, the inner side of quick coupling sleeve 4 is detachably equipped with connecting rod 5, and connecting rod 5 is fixedly installed at the top of movable frame 1, and the outer side of quick coupling sleeve 4 is rotatably equipped with encircling plate 6, and the encircling plate 6 is equipped with arrangement groove 7, and the outer side of quick coupling sleeve 4 is slidably equipped with limiting sleeve 8, and the one side of limiting sleeve 8 is connected with vertical plate 9, and the one side of vertical plate 9 is fixed with horizontal plate 10, and horizontal plate 10 is provided with three, and the outer side of quick coupling sleeve 4 is rotatably equipped with convolution sleeve 11, and the inner side of convolution sleeve 11 is equipped with configuration groove 12 in the form of variable diameter, and the one side of convolution sleeve 11 is fixed with convolution frame 13, and limiting rod 14 is slidably arranged in convolution frame 13, and the one end of limiting rod 14 is fixedly connected with limiting plate 15, and release plate 16 is slidably arranged in configuration groove 12, and the outer side of connecting rod 5 is equipped with movable slot 17, and quick connecting plate 18 is arranged in movable slot 17, and the both sides of quick connecting plate 18 are equipped with rotary shaft 19, and quick connecting plate 18 is rotatably installed in movable slot 17 through rotary shaft 19, and a plurality of limiting grooves 20 are formed in the outer side of quick coupling sleeve 4, and the one end of limiting rod 14 is inserted into limiting groove 20, and quick connecting block 21 is connected on the one side of release plate 16, and the one side of quick connecting block 21 abuts on the one end of quick connecting plate 18.

[0032] In the embodiment, when the centering operation is needed, first, the workpiece is placed on the bearing table 22 between the two centering frames 2, and then the air cylinder 28 is opened, the air cylinder 28 drives the piston rod 29 to retract, so that the movable frame 1 drives the sliding block 31 to slide along the sliding rail 30, and the movable frame 1 drives the connecting arm 27, so that the connecting arm 27 drives the rotating table 25 to rotate through the corresponding connecting rod 26, and then the rotating table 25 drives the other side connecting rod 26 to rotate, so that the connecting rod 26 drives the connecting arm 27 connected at one end to move, so that the connecting arm 27 drives the movable frame 1 connected at the other end to move, so that the movable frame 1 drives the sliding block 31 to slide along the sliding rail 30, so that the two movable frames 1 synchronously drive the centering frames 2 installed at the top to slide inward, and then the centering wheels 3 installed at the inner side of the centering frames 2 are guided, so that the two centering frames 2 gradually push the workpiece to the middle of the bearing table 22 to realize the centering operation. When the centering frame 2 needs to be replaced, first, the surrounding plate 6 is rotated forward, which drives the axial bearing 36 on one side to rotate forward, and at the same time, the surrounding plate 6 drives the arrangement slot 7 to rotate forward. When the arrangement slot 7 is rotated to a position corresponding to the transverse plate 10, the limiting sleeve 8 is pushed, which drives the vertical plate 9 and the transverse plate 10 on one side to gradually slide into the arrangement slot 7, and at the same time, the limiting sleeve 8 cooperates with the axial bearing 36 to press the restoring spring 34. When the restoring spring 34 is pressed to the limit, the transverse plate 10 closest to the limiting sleeve 8 slides through the arrangement slot 7 and moves to the other side of the surrounding plate 6. Then, the surrounding plate 6 is rotated in the reverse direction, which drives the axial bearing 36 on one side to rotate in the reverse direction and reset, and at the same time, the surrounding plate 6 synchronously drives the arrangement slot 7 to rotate in the reverse direction and reset to a position not corresponding to the transverse plate 10. At this time, the vertical plate 9 and the transverse plate 10 closest to the limiting sleeve 8 limit the limiting sleeve 8 to one side of the surrounding plate 6, and then the inner wall of the limiting sleeve 8 no longer limits the outer wall of the limiting plate 15. Then, the rotary sleeve 11 is rotated forward, which drives the rotary frame 13 on one side to rotate forward, and then the rotary frame 13 drives the limiting rod 14, the limiting plate 15 and the tension spring 37 to rotate forward. Then, the inner wall of the limiting slot 20 presses one end of the limiting rod 14. Due to the round corner structure design at the edge of the inner wall of the limiting slot 20 and one end of the limiting rod 14, one end of the limiting rod 14 slides out of the limiting slot 20, and the other end of the limiting rod 14 drives the tension spring 37 to stretch outward through the limiting plate 15. At the same time, the rotary sleeve 11 drives the configuration slot 12 with variable diameter inside to rotate forward, and then the release plate 16 moves in the configuration slot 12, so that the release plate 16 drives the quick connecting block 21 on one side to slide outward, so that the quick connecting block 21 no longer abuts against one end of the quick connecting plate 18. Then, the quick connecting sleeve 4 is pulled upward, which drives the inner guide strip 33 to gradually slide out along the guide slot 32, and the slope structure at the top inside of the quick connecting sleeve 4 no longer limits the outer wall of the quick connecting plate 18. Then, the tension spring 35 resets the quick connecting plate 18, which drives the quick connecting plate 18 to rotate along the rotating shaft 19.Then gradually make one end of the fast joint plate 18 into the movable slot 17, then completely remove the fast joint sleeve 4, then remove the other fast joint sleeve 4 according to the above steps, then the centering frame 2 with the centering wheel 3 can be removed.

[0033] Please refer to Figures 3-5 As a further embodiment of the whole device: a guide slot 32 is provided on the outer side of the connecting rod 5, and a guide strip 33 is fixedly provided on the inner side of the fast joint sleeve 4, and the guide slot 32 and the guide strip 33 are matched.

[0034] A restoring spring 34 is connected on one side of the limiting sleeve 8, and the restoring spring 34 is movably sleeved on the outer side of the fast joint sleeve 4.

[0035] A tension spring 35 is connected on one side of the fast joint plate 18, and the other end of the tension spring 35 is connected with the inner wall of the movable slot 17.

[0036] An axial bearing 36 is detachably provided on one side of the surrounding plate 6, the other end of the restoring spring 34 is connected with the axial bearing 36, and the axial bearing 36 is designed as a thrust bearing structure.

[0037] A pulling spring 37 is movably sleeved on the outer side of the limiting rod 14, and the two ends of the pulling spring 37 are respectively connected with the limiting plate 15 and the revolving frame 13.

[0038] More specifically, when the centering frame 2 is disassembled together with the centering wheel 3, the corresponding specification centering frame 2 is replaced, then the centering frame 2 is placed at the top end of the movable frame 1, and the connecting rod 5 is inserted through the reserved mounting hole on the centering frame 2, then the quick coupling sleeve 4 is sleeved from the upper side to the outside of the connecting rod 5, and the guide strip 33 on the inside of the quick coupling sleeve 4 slides into the guide groove 32, at the same time, the slope structure at the top end of the inside of the quick coupling sleeve 4 gradually limits the outer wall of the quick connecting plate 18, so that one end of the quick connecting plate 18 gradually moves inward, then the quick connecting plate 18 is reversely rotated along the rotating shaft 19, so that the quick connecting plate 18 drives the one side tension spring 35 to stretch outward, and the other end of the quick connecting plate 18 gradually rotates out of the movable slot 17, then the reverse rotation of the rotating sleeve 11 drives the one side rotating frame 13 to rotate reversely, then the rotating frame 13 drives the limiting rod 14, the limiting plate 15 and the pulling spring 37 to rotate reversely, at the same time, the rotating sleeve 11 drives the inside configuration slot 12 to rotate reversely, then the release plate 16 drives the quick connecting block 21 to slide reversely, so that the quick connecting block 21 slides inward to reset, then the quick connecting block 21 is re-attached to one end of the quick connecting plate 18, so that the quick connecting plate 18 does not move, at this time, the quick connecting block 21 is completely reset, then the rotating sleeve 11 is no longer rotated, at this time, the rotating frame 13 drives the limiting rod 14 and other components to rotate and reset to the position corresponding to the original limiting groove 20, then the pulling spring 37 resets and pulls the limiting plate 15, so that the limiting plate 15 drives the limiting rod 14 to slide inward, then one end of the limiting rod 14 is re-inserted into the original limiting groove 20, then the ring plate 6 is again forwardly rotated, so that the ring plate 6 drives the arrangement slot 7 and the one side installed axial bearing 36 to forwardly rotate, when the arrangement slot 7 is rotated to the position corresponding to the transverse plate 10 again, the restoring spring 34 pushes the limiting sleeve 8 to slide and reset, then the limiting sleeve 8 drives the three transverse plates 10 through the vertical plate 9 to slide and reset, when the restoring spring 34 is completely reset, the other two transverse plates 10 are just moved back to the two sides of the ring plate 6 respectively, then the ring plate 6 is reversely rotated again, which drives the arrangement slot 7 and the one side axial bearing 36 to reversely rotate and reset, so that the arrangement slot 7 is rotated and reset to the position not corresponding to the vertical plate 9 and the transverse plate 10, then the vertical plate 9 supports the limiting sleeve 8 to the side of the ring plate 6 in cooperation with the corresponding two transverse plates 10, so that the limiting sleeve 8 cannot easily slide, then the inner wall of the limiting sleeve 8 limits the outer wall of the limiting plate 15, so that the limiting plate 15 and the limiting rod 14 cannot slide outward, then the limiting rod 14 and the limiting groove 20 cooperate to limit the rotating frame 13, so that the rotating frame 13 and the rotating sleeve 11 cannot be accidentally rotated, thereby ensuring the stability of the installation, then the other quick coupling sleeves 4 and connecting rods 5 are sleeved one by one according to the above steps, thereby realizing the convenient and stable installation and fixation of the centering frame 2.

[0039] In summary, when the device is in use or operation: when the centering operation is needed, first place the workpiece on the bearing table 22 between the two centering frames 2, then open the air cylinder 28, the air cylinder 28 drives the piston rod 29 to retract, so that the movable frame 1 drives the sliding block 31 to slide along the sliding rail 30, and the movable frame 1 drives the connecting arm 27, so that the connecting arm 27 drives the rotating table 25 to rotate through the corresponding connecting rod 26, then the rotating table 25 drives the other side connecting rod 26 to rotate, so that the connecting rod 26 drives the connecting arm 27 connected at one end to move, so that the connecting arm 27 drives the movable frame 1 connected at the other end to move, so that the movable frame 1 drives the sliding block 31 to slide along the sliding rail 30, so that the two movable frames 1 synchronously drive the centering frames 2 installed at the top to slide inward, then the centering wheels 3 installed at the inner side of the centering frames 2 are guided, so that the two centering frames 2 gradually push the workpiece to the middle of the bearing table 22, realizing the centering operation, when the centering frames 2 need to be replaced, first rotate the surrounding plate 6 forward, the surrounding plate 6 drives the axial bearing 36 on one side to rotate forward, at the same time, the surrounding plate 6 drives the arrangement slot 7 to rotate forward, when the arrangement slot 7 is rotated to the position corresponding to the transverse plate 10, push the limiting sleeve 8, the limiting sleeve 8 drives the vertical plate 9 and the transverse plate 10 on one side to gradually slide into the arrangement slot 7, at the same time, the limiting sleeve 8 cooperates with the axial bearing 36 to press the restoring spring 34, when the restoring spring 34 is pressed to the limit, the transverse plate 10 closest to the limiting sleeve 8 just slides through the arrangement slot 7 and moves to the other side of the surrounding plate 6, then rotate the surrounding plate 6 reversely, the surrounding plate 6 drives the axial bearing 36 on one side to rotate reversely and reset, and the surrounding plate 6 synchronously drives the arrangement slot 7 to rotate reversely and reset to the position not corresponding to the transverse plate 10, at this time, the vertical plate 9 and the transverse plate 10 closest to the limiting sleeve 8 cooperate to limit the limiting sleeve 8 to one side of the surrounding plate 6, then the inner wall of the limiting sleeve 8 no longer limits the outer wall of the limiting plate 15, then rotate the rotary sleeve 11 forward, the rotary sleeve 11 drives the rotary frame 13 on one side to rotate forward, then the rotary frame 13 drives the limiting rod 14, the limiting plate 15 and the tension spring 37 to rotate forward, then the inner wall of the limiting slot 20 presses one end of the limiting rod 14, due to the round corner structure design at the edge of the inner wall of the limiting slot 20 and one end of the limiting rod 14, then one end of the limiting rod 14 slides out of the limiting slot 20, and the other end of the limiting rod 14 drives the tension spring 37 to stretch outward through the limiting plate 15, at the same time, the rotary sleeve 11 drives the configuration slot 12 with variable diameter inside to rotate forward, then the release plate 16 moves in the configuration slot 12, so that the release plate 16 drives the quick connecting block 21 on one side to slide outward, so that the quick connecting block 21 no longer abuts against one end of the quick connecting plate 18, then pull the quick connecting sleeve 4 upward, so that the quick connecting sleeve 4 drives the inner guide strip 33 to gradually slide out along the guide slot 32, and the slope structure at the top inside of the quick connecting sleeve 4 gradually no longer limits the outer wall of the quick connecting plate 18, then the tension spring 35 resets to pull the quick connecting plate 18, so that the quick connecting plate 18 rotates along the rotating shaft 19,Then the one end of the quick joint plate 18 is gradually put into the movable slot 17, then the quick joint sleeve 4 is completely removed, then the other quick joint sleeve 4 is removed according to the above steps, then the centering frame 2 with the centering wheel 3 can be removed.

[0040] When the centering frame 2 is disassembled with the centering wheel 3, the corresponding specification of the centering frame 2 is replaced, and then the centering frame 2 is placed at the top end of the movable frame 1, and the connecting rod 5 is inserted through the reserved mounting hole on the centering frame 2, and then the quick coupling sleeve 4 is sleeved from the upper side to the outside of the connecting rod 5, and the inner side guide strip 33 of the quick coupling sleeve 4 slides into the guide groove 32, and the slope structure at the inner top end of the quick coupling sleeve 4 gradually limits the outer wall of the quick connecting plate 18, so that one end of the quick connecting plate 18 gradually moves inward, and then the quick connecting plate 18 is reversely rotated along the rotating shaft 19, so that the quick connecting plate 18 drives the one side tension spring 35 to stretch outward, and the other end of the quick connecting plate 18 gradually rotates out of the movable slot 17, and then the reverse rotation of the rotating sleeve 11 drives the one side rotating frame 13 to rotate reversely, and then the rotating frame 13 drives the limiting rod 14, the limiting plate 15 and the pulling spring 37 to rotate reversely, and at the same time, the rotating sleeve 11 drives the inner configuration slot 12 to rotate reversely, and then the release plate 16 drives the quick connecting block 21 to slide reversely, so that the quick connecting block 21 slides inward to reset, and then the quick connecting block 21 is reconnected to one end of the quick connecting plate 18, so that the quick connecting plate 18 cannot move, at this time, the quick connecting block 21 is completely reset, and then the rotating sleeve 11 is no longer rotated, at this time, the rotating frame 13 drives the limiting rod 14 and other components to rotate and reset to the position corresponding to the original limiting groove 20, and then the pulling spring 37 resets the limiting plate 15 to slide inward, and then the limiting plate 15 drives the limiting rod 14 to slide inward, and then the one end of the limiting rod 14 is reinserted into the original limiting groove 20, and then the ring plate 6 is rotated again, so that the ring plate 6 drives the arrangement slot 7 and the one side installed axial bearing 36 to rotate forwardly, when the arrangement slot 7 is rotated to the position corresponding to the transverse plate 10 again, the restoring spring 34 pushes the limiting sleeve 8 to slide and reset, and then the limiting sleeve 8 drives the three transverse plates 10 through the vertical plate 9 to slide and reset, when the restoring spring 34 is completely reset, the other two transverse plates 10 are just moved back to the two sides of the ring plate 6 respectively, and then the ring plate 6 is reversely rotated again, which drives the arrangement slot 7 and the one side axial bearing 36 to reversely rotate and reset, so that the arrangement slot 7 is rotated and reset to the position not corresponding to the vertical plate 9 and the transverse plate 10, and then the vertical plate 9 supports the limiting sleeve 8 to the side of the ring plate 6 in cooperation with the corresponding two transverse plates 10, so that the limiting sleeve 8 cannot slide easily, and then the inner wall of the limiting sleeve 8 limits the outer wall of the limiting plate 15, so that the limiting plate 15 and the limiting rod 14 cannot slide outward, and then the limiting rod 14 and the limiting groove 20 cooperate to limit the rotating frame 13, so that the rotating frame 13 and the rotating sleeve 11 cannot be accidentally rotated, thereby ensuring the stability of the installation, and then the other quick coupling sleeves 4 and connecting rods 5 are clamped one by one according to the above steps, thereby realizing the convenient and stable installation and fixation of the centering frame 2.

[0041] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection or other known connection mode, which will not be described here. In the above, whenever there is a fixed connection, welding is preferred. Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A centering device of a press machine, comprising a movable frame (1), a centering frame (2) is arranged at the top end of the movable frame (1), a plurality of centering wheels (3) are arranged in the centering frame (2) and rotate, characterized in that: The centering frame (2) is provided with a quick coupling sleeve (4), the inner side of the quick coupling sleeve (4) is provided with a connecting rod (5), the outer side of the quick coupling sleeve (4) is rotatably provided with a surrounding plate (6), the surrounding plate (6) is provided with an arrangement slot (7), the outer side of the quick coupling sleeve (4) is slidably provided with a limiting sleeve (8), one side of the limiting sleeve (8) is provided with a vertical plate (9), one side of the vertical plate (9) is provided with a horizontal plate (10), the horizontal plate (10) is provided with three, the outer side of the quick coupling sleeve (4) is rotatably provided with a convolution sleeve (11), the inner side of the convolution sleeve (11) is provided with a configuration slot (12), one side of the convolution sleeve (11) is provided with a convolution frame (13), the convolution frame (13) is slidably provided with a limiting rod (14), one end of the limiting rod (14) is provided with a limiting plate (15), the configuration slot (12) is slidably provided with a release plate (16), the outer side of the connecting rod (5) is provided with a movable slot (17), the movable slot (17) is provided with a quick connecting plate (18), both sides of the quick connecting plate (18) are provided with a rotating shaft (19), the outer side of the quick coupling sleeve (4) is provided with a plurality of limiting grooves (20), one side of the release plate (16) is provided with a quick connecting block (21).

2. A centering device for a press machine as defined in claim 1, characterized in that The lower side of the centering frame (2) is provided with a bearing table (22), the top end of the bearing table (22) is provided with a moving slot (23), the inner side of the bearing table (22) is detachably provided with a base (24), the base (24) is rotatably provided with a rotating table (25), both sides of the rotating table (25) are detachably provided with a connecting rod (26), one end of the connecting rod (26) is rotatably connected with a connecting arm (27), the other end of the connecting arm (27) is rotatably connected with the movable frame (1), one side of one movable frame (1) is detachably provided with a gas cylinder (28), the output end of the gas cylinder (28) is connected with a piston rod (29), the other end of the piston rod (29) is detachably connected with the other movable frame (1).

3. A centering device for a press machine as defined in claim 2, characterized in that: The base (24) is detachably provided with a sliding rail (30), the movable frame (1) is detachably provided with a sliding block (31), the sliding block (31) is slidably connected with the sliding rail (30).

4. A centering device for a press machine according to any one of claims 1-3, characterized in that: The outer side of the connecting rod (5) is provided with a guide groove (32), the inner side of the quick coupling sleeve (4) is fixedly provided with a guide strip (33), the guide groove (32) is matched with the guide strip (33).

5. The centering device of claim 1, wherein: One side of the limiting sleeve (8) is connected with a restoring spring (34), the restoring spring (34) is movably sleeved on the outer side of the quick coupling sleeve (4).

6. A centering device for a press machine as defined in claim 4, characterized in that: One side of the quick connecting plate (18) is connected with a tension spring (35), the other end of the tension spring (35) is connected with the inner wall of the movable slot (17).

7. The centering device of claim 5, wherein: One side of the surrounding plate (6) is detachably provided with an axial bearing (36), the other end of the restoring spring (34) is connected with the axial bearing (36), the axial bearing (36) is designed as a thrust bearing structure.

8. A centering device for a press machine according to claim 7, characterized in that: The outer side of the limiting rod (14) is movably sleeved with a pulling spring (37), both ends of the pulling spring (37) are respectively connected with the limiting plate (15) and the convolution frame (13).

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