Follow-up roll changing trolley

Abstract

The invention relates to the technical field of devices for roller changing of roller machines, in particular to a follow-up type roller changing trolley which comprises a trolley frame. The two groups of transfer wheels are rotationally connected to the front side and the rear side of the frame respectively; the two groups of transfer belts are respectively wound between the two groups of transfer wheels; the at least four groups of mounting shafts are fixedly connected between the two groups of transfer belts at equal intervals; the driving shaft is rotationally connected into the frame; the first transmission belt group is arranged between the driving shaft and the transfer wheel; the two groups of supporting plates are fixedly connected into the frame; and the transfer units are rotationally arranged on the mounting shafts. Through the combined structure of the transfer belt, sequential conveying and neat storage of the roll shafts are achieved, repeated adjustment and alignment are not needed in the replacement process, operation is easy, the process is regular, the efficiency and regularity of roll shaft replacement are remarkably improved, and the problems of dislocation, disorder and the like easily occurring in traditional replacement are solved.

Description

Technical Field

[0001] This invention relates to the technical field of roller changing devices for roller mills, and more particularly to a follow-up roller changing trolley. Background Technology

[0002] Roller mills are key pieces of equipment in modern industrial production, widely used in metallurgy, papermaking, plastics and rubber processing, and other fields. In daily production and equipment maintenance, rollers need to be replaced and repaired due to wear, process adjustments or malfunctions. The process usually involves removing the old rollers from the equipment work area and moving in and installing the new or repaired rollers.

[0003] For large production lines or roller mill clusters, the number of rollers that need to be replaced during maintenance is large, and they are heavy. Roller changing trolleys have become an indispensable auxiliary device in roller changing operations. They are usually designed as mobile carrying platforms, equipped with lifting or traction structures to carry the rollers between the workshop and the maintenance area.

[0004] However, existing roll changing trolleys have the following problems when facing continuous, batch roll changing tasks: if the number of rolls is small, frequent trips between the warehouse and the equipment site are required during maintenance, resulting in low work efficiency. Simply increasing the number of rolls will cause mutual obstruction due to the parallel loading of the rolls, making the loading and unloading operations extremely inconvenient. In addition, roll changing operations usually require unloading old rolls and loading new rolls at the same station, that is, the trolley is loaded with both old and new rolls at the same time. At this time, the rolls need to be repositioned or reordered in a limited space, which is not only complicated and inconvenient, but also poses a risk of collision and slippage, which may affect the safety and overall efficiency of the operation. Summary of the Invention

[0005] In view of the deficiencies of the prior art mentioned in the background, the present invention provides a follow-up roll changing trolley that can adapt to continuous and batch roll changing operation mode, so as to realize the process and efficiency of roll changing operation.

[0006] The technical implementation of the present invention is as follows: a follow-up roller changing trolley, comprising: a frame for loading rollers, with a feeding port for the rollers to enter and exit on either the front or rear side wall; and an electric wheel connected to the bottom of the frame to provide walking power.

[0007] The device further includes: two sets of transfer wheels, each set having four wheels, rotatably connected to the front and rear sides of the vehicle frame respectively, the surface of the transfer wheels having protruding teeth; two sets of transfer belts, respectively wrapped around the two sets of transfer wheels to form a rectangular loop, the transfer belts having equidistant grooves with protruding teeth embedded in the grooves; at least four sets of mounting shafts, equidistantly fixedly connected between the two sets of transfer belts, the length of the left and right sides of the transfer belts being less than the distance between adjacent sets of mounting shafts; a first motor, fixedly connected inside the vehicle frame; and a drive shaft, rotatably connected inside the vehicle frame. The output end is fixed coaxially with it; the first transmission belt group is located between the drive shaft and the transfer wheel, and the two ends of the drive shaft are respectively connected to one of the two sets of transfer wheels through the first transmission belt group; two sets of support plates are fixedly connected inside the frame and are located below the upper and lower edges of the transfer belt; the transfer unit is rotatably mounted on each mounting shaft, used to load the roller shaft, and slides along the support plate to maintain stable operation; the length of the left and right edges of the transfer belt is greater than the height of the transfer unit, and the distance between the left and right ends of the support plate and the frame is greater than the width of the transfer unit.

[0008] In addition, it is particularly preferred that the device further includes: two sets of limiting units, symmetrically arranged on both sides inside the frame, used to limit the transfer unit when it reaches the left and right edge lines of the transfer belt, so as to ensure that the transfer unit always maintains a horizontal posture.

[0009] Each set of limiting units includes: a mounting frame, fixedly connected to the vehicle frame; a crossbeam, slidably connected to the mounting frame in a vertical direction; a first screw, rotatably connected to both sides of the mounting frame and threadedly engaged with the crossbeam; a second motor, fixedly connected to the mounting frame, with its output end coaxially fixed to one of the first screws; a second transmission belt assembly, located between the first screws; two sets of limiting arms, rotatably connected to the crossbeam, rotatable to the underside of the transfer unit, providing support and restricting its rotation; a third motor, fixedly connected to the mounting frame; a transition shaft, rotatably connected to the mounting frame, coaxially fixed to the output end of the third motor; a third transmission belt assembly, connecting the transition shaft to one set of limiting arms for synchronous transmission in the same direction; and a gear set, connecting the transition shaft to the other set of limiting arms for synchronous transmission in the opposite direction.

[0010] Furthermore, it is particularly preferred that each set of transfer units includes: a base, rotatably connected to the mounting shaft; a limiting rail, fixedly connected to the top of the base; a transfer seat, slidably connected to the base for loading the support roller shaft; and a first roller, rotatably connected to the bottom of the transfer seat, cooperating with the limiting rail to restrict the directional movement of the transfer seat and prevent it from detaching from the base.

[0011] Furthermore, it is particularly preferred that each group of transfer units also includes: a second roller, rotatably connected to both sides of the transfer seat, for reducing contact friction between the transfer seat and the base; an auxiliary roller, rotatably connected to the top of the transfer seat, for reducing contact friction between the roller shaft and the transfer seat; and an auxiliary ball, rollingly disposed at the bottom of the base, for reducing contact friction between the base and the support plate.

[0012] Furthermore, it is particularly preferred that each transfer unit has a locking groove on its base and an installation groove on the side wall of the transfer seat; the device also includes a locking unit, which is disposed in the installation groove and is used to cooperate with the locking groove of the base to lock the unfolded state of the transfer seat.

[0013] Each locking unit includes: a mounting rod, fixedly connected to a mounting groove; a locking block, slidably connected to the mounting groove via the mounting rod, with a beveled opening in its center; a first return spring, passing through the mounting rod, with both ends fixed to the locking block and the mounting rod respectively, used to apply elastic force to the locking block, causing it to tend to insert into the locking groove; a pressing block, slidably connected to the side wall of the transfer seat, with its front end passing through the side wall of the transfer seat and extending into the opening of the locking block, contacting the bevel inside the opening; and a second return spring, fixedly connected between the pressing block and the transfer seat, used to reset the pressing block when there is no external force.

[0014] Furthermore, it is particularly preferred that the locking unit also includes a third roller, which is rotatably connected to the bottom of the locking block to reduce contact friction between the locking block and the base.

[0015] Furthermore, it is particularly preferred that the end of the roller shaft is provided with an insertion port; the device includes: a mounting frame, fixedly connected to the top of the carriage frame and corresponding to the position of the feeding port; at least two sets of second screws, rotatably connected to the mounting frame; a connecting frame, slidably connected to the bottom of the carriage frame in the front-rear direction and threadedly engaged with the second screws; an electric insertion block, fixedly connected to the connecting frame, which is controllably telescopic and used to insert into the insertion port at the end of the roller shaft to mate with the roller shaft; a fourth motor, fixedly connected to the rear side of the mounting frame, whose output is coaxially fixed with one of the second screws; and a fourth transmission belt set, disposed between the second screws.

[0016] Furthermore, it is particularly preferred that the device includes: an electric pusher block, fixedly connected to the lower part of the connecting frame, which is controllably retractable and used to contact and cooperate with the side wall of the transfer seat and the extrusion block.

[0017] Beneficial effects: The present invention achieves sequential conveying and neat storage of rollers through the combined structure of the transfer belt, so that the replacement process does not require repeated adjustment of alignment, the operation is simple and the process is standardized, which significantly improves the efficiency and neatness of roller replacement and avoids the problems of misalignment and confusion that are easy to occur in traditional replacement.

[0018] This invention uses symmetrically arranged limiting units to actively intervene and provide stable support and posture restriction when the transfer unit changes position on the left and right sides of the transfer belt. This forces the transfer unit to remain horizontal and prevents the roller from tilting, swaying, or even slipping at critical positions due to its own weight or inertia, thus ensuring the stability and safety of the roller conveyor.

[0019] This invention uses a guide sliding structure on the base for the transfer seat, combined with multi-point rolling support of auxiliary rollers and auxiliary balls, to reduce the frictional resistance of the contact surfaces of the roller shaft during loading, unloading, and transfer. This ensures that the roller shaft runs smoothly and stably when moving into and out of this invention and when docking with external roller machines, avoiding jamming or uneven loading, and improving the controllability and safety of the roller shaft loading and unloading process.

[0020] This invention uses a locking unit to provide locking and automatic unlocking functions for the extension and retraction of the transfer seat, ensuring that the transfer seat will not be accidentally displaced or shaken during the loading or unloading of the roller, providing a stable support platform for the roller and effectively preventing operational risks caused by unstable support. Furthermore, the locking unit automatically unlocks through the roller's own movement, achieving a natural connection between loading, unloading, and resetting actions, thus improving the continuity and efficiency of the invention's operation.

[0021] This invention, through the coordinated action of an electric pusher, an electric inserter, and a fourth motor, can automatically complete a series of continuous operations such as the unfolding and retraction of the transfer seat, the docking of the roller shaft, and the pulling and unloading. This enables smooth and controllable disassembly of the roller shaft, reduces pauses and adjustments between processes, and makes the roller changing operation fast and continuous with smooth connections between each link. This improves the continuity of the work process, reduces labor intensity and operational difficulty, and significantly improves the overall work efficiency of this invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 This is a partial cross-sectional view of the internal structure of the vehicle frame in this invention.

[0024] Figure 3 This is a schematic diagram of the connection structure between a set of transfer units, transfer wheels, and transfer belts in this invention.

[0025] Figure 4 This is a schematic diagram of the position structure of the limiting unit in this invention.

[0026] Figure 5 This is a cross-sectional view of the connection structure of the limiting unit in this invention.

[0027] Figure 6 This is a schematic diagram of the connection structure of the transfer unit in this invention.

[0028] Figure 7 This is a schematic diagram of the structural state of the transfer unit extending from the feed port in this invention.

[0029] Figure 8 This is a cross-sectional view of the connection structure of the locking unit on the transfer seat in this invention.

[0030] Figure 9 This is a structural separation diagram of the locking unit in this invention.

[0031] Figure 10 This is a schematic diagram showing the positional structure of the connecting frame and the transfer unit in this invention.

[0032] Figure 11 This is a schematic diagram of the connection structure of the connecting frame, the electric insertion block and the electric push block in this invention.

[0033] Figure 12 This is a schematic diagram of the cooperation structure between the electric insert block and the roller shaft in this invention.

[0034] Figure 13 This is a schematic diagram of the cooperative structure between the electric pusher and the transfer seat in this invention.

[0035] Figure 14 This is a schematic diagram of the cooperative structure of the electric pusher block and the extrusion block in this invention.

[0036] In the diagram: 00, roller; 00a, insertion port; 01, frame; 02, electric wheel; 03, feed port; 04, transfer wheel; 04a, toothed protrusion; 05, transfer belt; 05a, toothed groove; 06, mounting shaft; 07, first motor; 07a, drive shaft; 08, first transmission belt assembly; 09, support plate; 11, mounting bracket; 12, crossbeam; 13, first screw; 14, second motor; 15, second transmission belt assembly; 16, limiting arm; 17, third motor; 17a, transition shaft; 18, third transmission belt assembly; 19. 21. Gear set; 22. Base; 23. Locking groove; 24. Limiting rail; 25. Transfer seat; 26. Mounting groove; 27. First roller; 28. Second roller; 29. ​​Auxiliary roller; 20. Auxiliary ball; 21. Mounting rod; 22. Locking block; 33. First return spring; 34. Pressing block; 35. Second return spring; 36. Through hole; 37. Third roller; 48. Mounting frame; 49. Second screw; 40. Connecting frame; 41. Electric insertion block; 42. Electric push block; 43. Fourth motor; 44. Fourth transmission belt set. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0038] Example: A follow-up roller changing trolley, see reference. Figures 1-3 It includes: a frame 01 for loading rollers 00, with a feeding port 03 for the rollers 00 to enter and exit at the center of its rear side; and an electric wheel 02, which is installed at the bottom of the frame 01 to provide power for movement.

[0039] This device also includes: two sets of transfer wheels 04, each set consisting of four wheels, which are rotatably mounted on the front and rear sides of the frame 01 at four rectangular points. The surface of the transfer wheels 04 is provided with protruding teeth 04a; two sets of transfer belts 05, which are respectively wrapped around the two sets of transfer wheels 04 to form a rectangular loop. The transfer belts 05 are provided with equally spaced toothed grooves 05a, and the protruding teeth 04a are embedded in the toothed grooves 05a to achieve stable transmission; fourteen mounting shafts 06, which are fixedly mounted at equal intervals between the two sets of transfer belts 05, and the length of the left and right sides of the transfer belts 05 is less than the distance between them; a first motor 07, which is fixedly mounted inside the frame 01; and a drive shaft 07a, which is rotatably mounted inside the frame 01. The output of the first motor 07... The end is coaxially fixed with it; the first transmission belt group 08 is located between the drive shaft 07a and the transfer wheel 04. The two ends of the drive shaft 07a are respectively connected to one of the two sets of transfer wheels 04 through the first transmission belt group 08, thereby driving the two sets of transfer wheels 04 to rotate synchronously; two sets of support plates 09 are fixedly installed in the frame 01, respectively located below the upper and lower edges of the transfer belt 05; the transfer unit is rotatably mounted on each mounting shaft 06, used to load the roller shaft 00, and slides along the support plate 09 to maintain stable operation; the length of the left and right edges of the transfer belt 05 is greater than the height of the transfer unit, and the distance between the left and right ends of the support plate 09 and the frame 01 is greater than the width of the transfer unit.

[0040] Rollers 00 are loaded one by one onto each transfer unit from above the frame 01, leaving one transfer unit empty. The first motor 07 is started, and the first transmission belt group 08 drives the two sets of transfer wheels 04 to rotate synchronously via the drive shaft 07a, causing the transfer belt 05 to rotate cyclically, and each transfer unit moves forward in sequence. Then, the device is moved to the front of the external roller machine where the roller 00 to be replaced is located, and the old roller 00 is unloaded onto the empty transfer unit. The first motor 07 is then started and stopped, causing all transfer units to move forward one position. The transfer unit carrying the old roller 00 moves away, and the next adjacent transfer unit carrying the new roller 00 moves forward to the feeding port 03. The transfer unit is operated to load the new roller 00 into the roller machine, thus completing a single replacement. At this time, the empty transfer unit can be used to load the next unloaded old roller 00. Repeating the above steps allows for continuous and orderly replacement of old and new rollers 00, and the old and new rollers 00 can also be neatly collected into the device.

[0041] This device, through the combined structure of the transfer belt 05, realizes the sequential conveying and neat storage of the rollers 00, so that the replacement process does not require repeated adjustment of alignment. The operation is simple and the process is standardized, which significantly improves the efficiency and neatness of the replacement of rollers 00 and avoids the problems of misalignment and confusion that are easy to occur in traditional replacement.

[0042] See Figure 2 , 4 and Figure 5The device also includes: two sets of limiting units, symmetrically arranged on both sides inside the frame 01, used to limit the transfer unit when it reaches the left or right edge of the transfer belt 05, ensuring that the transfer unit always maintains a horizontal posture. Each limiting unit includes: a mounting frame 11, fixedly installed inside the frame 01; a crossbeam 12, slidably installed on the mounting frame 11 in a vertical direction; two first screws 13, rotatably installed on both sides of the mounting frame 11, and threadedly engaged with the crossbeam 12; a second motor 14, fixedly installed on the mounting frame 11, with its output end coaxially fixed with one of the first screws 13; and a second transmission belt assembly 15, located on the two first screws. Between 13, the two rotate synchronously, thereby smoothly driving the crossbeam 12 to move up and down; two sets of limiting arms 16 are rotatably mounted on the crossbeam 12, and can rotate to the bottom of the transfer unit to support it and restrict its rotation; the third motor 17 is fixedly mounted in the mounting frame 11; the transition shaft 17a is rotatably mounted in the mounting frame 11 and is coaxially fixed with the output end of the third motor 17; the third transmission belt group 18 connects the transition shaft 17a and one of the limiting arms 16 to achieve synchronous transmission in the same direction; the gear group 19 connects the transition shaft 17a and the other set of limiting arms 16 to achieve synchronous transmission in the opposite direction, so that the two sets of limiting arms 16 can be opened or closed synchronously.

[0043] During operation, the conveyor belt 05 drives the conveyor unit to rotate cyclically, switching between the upper and lower support plates 09. When the conveyor unit steps to the left or right edge of the conveyor belt 05 and is about to switch between the upper and lower support plates 09, the limit unit is activated to ensure that the conveyor unit remains horizontal during vertical movement. Taking the counterclockwise rotation of the conveyor wheel 04 as an example, the specific process is as follows:

[0044] When the transfer unit moves to the leftmost side of the frame 01 and disengages from the upper support plate 09, the left limiting unit activates. Supported by the limiting arm 16, the transfer unit is activated by the second motor 14, which drives the crossbeam 12 and the limiting arm 16 downwards via the first screw 13. The limiting arm 16's downward movement speed is controlled to match the transfer unit's downward movement speed, ensuring stable support throughout the entire downward transition and preventing tilting. This ensures the roller 00 remains stable on the transfer unit. Similarly, when the transfer unit reaches the right edge and needs to move upwards to switch to the upper layer, the right limiting unit assists its upward movement and restricts its rotation in the same way.

[0045] Since the stepping motion of the transfer unit is intermittent, the limiting unit needs to quickly reset after each transfer unit completes its position change at the left and right edges, in preparation for cooperating with the next transfer unit. Taking the left limiting unit as an example:

[0046] The third motor 17 starts, driving the limit arm 16 to rotate. Through the transition shaft 17a, the third transmission belt group 18 and the gear group 19, the two sets of limit arms 16 are driven to rotate synchronously in opposite directions, so that they are completely disengaged from under the transfer unit that has completed the conversion. Then the second motor 14 is started, driving the crossbeam 12 and the limit arm 16 to move up and reset, and unfolding the limit arm 16 to the ready position. When the next transfer unit steps to the left side line position, the limit arm 16 can descend again to cooperate with it, and restrict its rotation while following its movement.

[0047] This device, through symmetrically arranged limiting units, can actively intervene and provide stable support and posture restriction for the transfer unit when it changes position on the left and right sides of the transfer belt 05. This forces the transfer unit to remain horizontal and prevents the roller 00 from tilting, swaying, or even slipping at critical positions due to its own weight or inertia, thus ensuring the stability and safety of the roller 00 conveyed by this device.

[0048] See Figures 1-7 Each transfer unit includes: a base 21, rotatably mounted on the mounting shaft 06; a limiting rail 22, fixedly mounted on the top of the base 21; a transfer seat 23, slidably mounted on the base 21 for loading the support roller shaft 00; a first roller 24, rotatably mounted on the bottom of the transfer seat 23, cooperating with the limiting rail 22 to guide the transfer seat 23 relative to the base 21 and ensure that the two do not separate; a second roller 25, rotatably mounted on both sides of the transfer seat 23 to reduce the contact friction between the transfer seat 23 and the base 21; an auxiliary roller 26, rotatably mounted on the top of the transfer seat 23 to reduce the contact friction between the roller shaft 00 and the transfer seat 23; and an auxiliary ball 27, rollingly disposed on the bottom of the base 21, with one-third of it exposed, to reduce the contact friction between the base 21 and the support plate 09.

[0049] When roller 00 needs to be replaced, the transfer seat 23 is moved backward, i.e., towards the feed port 03, so that it extends outward through the feed port 03 and docks with the roller mill. During the unloading of the old roller 00, the old roller 00 will be transferred to the transfer seat 23 and supported by the transfer seat 23. At the same time, the auxiliary roller 26 assists in its rolling transfer to improve the stability and ease of operation of the roller 00 loading and unloading process. After the old roller 00 has been completely transferred to the transfer seat 23, the transfer seat 23 is moved forward to retract it into the carriage frame 01, thus completing the unloading operation of the old roller 00.

[0050] Subsequently, the entire drive transfer unit is stepped forward, rotating the transfer unit loaded with the new roller 00 to the front of the feed port 03; repeat the above operation to push the transfer seat 23 backward, assisting the new roller 00 to be smoothly installed into the roller mill; after installation, the transfer seat 23 is retracted forward into the device, thus completing the installation of the new roller 00.

[0051] This device uses the guide sliding structure of the transfer seat 23 on the base 21, combined with the multi-point rolling support of the auxiliary roller 26 and the auxiliary ball 27, to reduce the frictional resistance of each contact surface of the roller shaft 00 during loading, unloading and transfer. This ensures that the roller shaft 00 runs smoothly and stably when moving into and out of this device and docking with external roller machines, avoiding jamming or uneven loading, and improving the controllability and safety of the roller shaft 00 loading and unloading process.

[0052] See Figure 2 , Figure 7 , Figure 8 and Figure 9 Each transfer unit has a locking groove 21a at the rear end of its base 21 and a mounting groove 23a on the front side of the front wall of its transfer seat 23. The device also includes a locking unit, located within the mounting groove 23a, for engaging with the locking groove 21a of the base 21 to lock the unfolded state of the transfer seat 23. Each locking unit includes: a mounting rod 31, fixedly installed in the mounting groove 23a; a locking block 32, slidably installed in the mounting groove 23a via the mounting rod 31, with a beveled opening 36 in its center; and a first return spring 33, passing through the mounting rod 31 and fixed at both ends. The locking block 32 and the mounting rod 31 are used to apply an elastic force to the locking block 32, making it tend to insert into the locking groove 21a; the pressing block 34 is slidably installed on the rear side of the front side wall of the transfer seat 23, and its front end passes through the front side wall of the transfer seat 23 and extends into the through hole 36 of the locking block 32, contacting the inclined surface inside the through hole 36; the second return spring 35 is fixedly installed between the pressing block 34 and the transfer seat 23, and is used to reset the pressing block 34 when there is no external force; the third roller 37 is rotatably installed on the bottom of the locking block 32, and is used to reduce the contact friction between the locking block 32 and the base 21.

[0053] When the transfer seat 23 moves backward to the fully extended position, the locking block 32 automatically inserts into the locking groove 21a of the base 21 under the action of the first return spring 33, realizing the relative locking between the transfer seat 23 and the base 21. This locking state can keep the position of the transfer seat 23 fixed during the process of unloading and transferring the roller 00 to the transfer seat 23, thereby providing stable support for the roller 00 and preventing the transfer seat 23 from accidentally moving and affecting the loading and unloading operation of the roller 00.

[0054] After the roller 00 is completely transferred onto the transfer seat 23, the front end of the roller 00 contacts the pressing block 34, pushing the pressing block 34 forward and compressing the second return spring 35. As the pressing block 34 moves forward, its front end slides along the inclined surface of the through-hole 36, thereby pressing the locking block 32 upward and forcing the locking block 32 to overcome the elastic force of the first return spring 33 and exit from the locking groove 21a, thus achieving automatic unlocking of the locking unit. After unlocking, the transfer seat 23 can move forward freely and retract into the device. When the pressing block 34 loses the external pressing force, the second return spring 35 pushes the pressing block 34 to automatically reset, preparing for the next locking cycle.

[0055] This device uses a locking unit to provide locking and automatic unlocking functions for the extension and retraction of the transfer seat 23, ensuring that the transfer seat 23 will not be accidentally displaced or shaken during the loading or unloading of the roller 00, providing a stable support platform for the roller 00, and effectively preventing operational risks caused by unstable support. In addition, the locking unit is automatically unlocked by the movement of the roller 00 itself, realizing a natural connection between loading, unloading and resetting actions, improving the continuity and efficiency of the device's operation.

[0056] See Figure 1 , Figure 2 , Figure 10 and Figure 11 The roller 00 has an insertion port 00a at its end. The device includes: a mounting frame 41, fixedly mounted on the top center of the frame 01; two second screws 42, rotatably mounted inside the mounting frame 41; a connecting frame 43, slidably mounted below the frame 01 in the front-rear direction, and threadedly engaged with the two second screws 42; an electric insertion block 44, fixedly mounted on the connecting frame 43, which is controllably telescopic and used to insert into the insertion port 00a at the end of the roller 00 to achieve docking with the roller 00; an electric push block 45, fixedly mounted on the lower part of the connecting frame 43, which is controllably telescopic and used to contact and engage with the front side wall of the transfer seat 23 and the extrusion block 34; a fourth motor 46, fixedly mounted on the rear side of the mounting frame 41, whose output is coaxially fixed with one of the second screws 42; and a fourth transmission belt group 47, located between the two second screws 42 to achieve synchronous rotation of the two.

[0057] When it is necessary to disassemble the old roller 00, operate the electric push block 45 to extend, its status is shown in [the diagram]. Figure 13The front end of the conveyor is lower than the upper edge of the front side wall of the transfer seat 23. The fourth motor 46 is started, driving the two second screws 42 to rotate synchronously, which drives the connecting frame 43 and the electric push block 45 to move backward as a whole. During the process, the electric push block 45 pushes the transfer seat 23 backward, so that it extends through the feed port 03 and docks with the roller. After the transfer seat 23 reaches its maximum stroke, it is automatically locked by the locking unit. At this time, the electric push block 45 is controlled to retract. The connecting frame 43 continues to move backward until the electric push block 45 is aligned with the end of the roller shaft 00. The fourth motor 46 is stopped, and the electric insert block 44 is controlled to extend. Its state is shown in the figure. Figure 12 The insertion port 00a at the end of the roller shaft 00 is used to dock with the roller shaft 00; the fourth motor 46 is started to reverse, and the electric insertion block 44 moves the control roller shaft 00 forward, smoothly pulling it out of the roller machine. After the roller shaft 00 is completely pulled out of the roller machine, the roller shaft 00 contacts the pressing block 34 on the transfer seat 23, triggering the locking unit to automatically unlock; the connecting frame 43 continues to move forward to pull the roller shaft 00, which will drive the unlocked transfer seat 23 back into the frame 01; after the transfer seat 23 is fully reset, the electric insertion block 44 is retracted, and the connecting frame 43 is operated to complete the final stage of forward movement, that is, to complete the unloading and recycling of the old roller shaft 00.

[0058] When a new roller 00 needs to be loaded, the transfer unit carrying the new roller 00 is moved to the feed port 03. The electric push block 45 is extended, and the connecting frame 43 is driven to move backward, so that the electric insertion block 44 approaches the end of the new roller 00 and is extended to insert into the insertion port 00a to perform docking. At this time, the electric push block 45 contacts the transfer seat 23, so the connecting frame 43 continues to move backward, which will simultaneously push the transfer seat 23 and the new roller 00 to move backward together. After the transfer seat 23 moves to its maximum stroke, it is locked by the locking unit. Then, the electric push block 45 is retracted; the connecting frame 43 continues to move backward, and the new roller shaft 00 is smoothly pushed into the installation position in the roller mill by the electric insert block 44 until the new roller shaft 00 is installed in place. Then, the electric insert block 44 is retracted to disengage it from the roller shaft 00. After that, the connecting frame 43 is moved forward to return to its original position. Before this, the electric push block 45 is extended. When it moves forward with the connecting frame 43 to the rear of the front side wall of the transfer seat 23, it will contact the extrusion block 34 and push the extrusion block 34 forward. The state is shown in the figure. Figure 14 This automatically triggers the locking unit to unlock, and the connecting frame 43 continues to move forward, which in turn drives the unlocked transfer seat 23 to move forward and back to the initial position inside the frame 01. After the transfer seat 23 is reset, the electric push block 45 is controlled to retract, and the connecting frame 43 completes the final stage of forward movement, completing the overall positioning of the device.

[0059] Since there is a fixed timing sequence between the extension and retraction of the electric push block 45 and the electric insertion block 44 and the start, stop and turn of the fourth motor 46, this device can be centrally controlled through a preset program to achieve automated operation of the entire assembly and disassembly process.

[0060] This device, through the coordinated action of the electric push block 45, the electric insert block 44 and the fourth motor 46, can automatically complete a series of continuous operations such as the unfolding and retraction of the transfer seat 23, the docking of the roller shaft 00, and the pulling and unloading. It realizes the smooth and controllable disassembly of the roller shaft 00, reduces the pauses and adjustments between processes, makes the roller changing operation fast and continuous, and the connection between each link smooth, thereby improving the continuity of the operation process, reducing labor intensity and operation difficulty, and significantly improving the overall operation efficiency of this device.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A follow-up roller changing trolley, characterized in that, include: The frame (01) is used to load the roller (00), and either the front or rear side wall is provided with a feeding port (03) for the roller (00) to enter and exit; Electric wheels (02) are connected to the bottom of the frame (01) to provide power for movement; The device further includes: two sets of transfer wheels (04), each set having four wheels, rotatably connected to the front and rear sides of the frame (01), the surface of the transfer wheels (04) having protruding teeth (04a); two sets of transfer belts (05), respectively encircling the two sets of transfer wheels (04) to form a rectangular loop, the transfer belts (05) having equidistant grooves (05a) with protruding teeth (04a) embedded in the grooves (05a); at least four sets of mounting shafts (06), equidistantly fixedly connected between the two sets of transfer belts (05), the length of the left and right sides of the transfer belts (05) being less than the distance between adjacent sets of mounting shafts (06); a first motor (07), fixedly connected inside the frame (01); and a drive shaft (07a), rotatably connected inside the frame (01). The output end of the first motor (07) is fixed coaxially with it; the first transmission belt group (08) is located between the drive shaft (07a) and the transfer wheel (04), and the two ends of the drive shaft (07a) are respectively connected to one of the two sets of transfer wheels (04) through the first transmission belt group (08); the two sets of support plates (09) are fixedly connected inside the frame (01) and are located below the upper and lower edges of the transfer belt (05); the transfer unit is rotatably mounted on each mounting shaft (06) for loading the roller shaft (00) and sliding along the support plate (09) to maintain stable operation; the length of the left and right edges of the transfer belt (05) is greater than the height of the transfer unit, and the distance between the left and right ends of the support plate (09) and the frame (01) is greater than the width of the transfer unit.

2. The follow-up roller changing trolley as described in claim 1, characterized in that, The device also includes two sets of limiting units, symmetrically arranged on both sides inside the frame (01), used to limit the transfer unit when it reaches the left and right edge positions of the transfer belt (05), so as to ensure that the transfer unit always maintains a horizontal posture. Each set of limiting units includes: a mounting bracket (11), fixedly connected to the frame (01); a crossbeam (12), slidably connected to the mounting bracket (11) in the vertical direction; a first screw (13), rotatably connected to both sides of the mounting bracket (11) and threadedly engaged with the crossbeam (12); a second motor (14), fixedly connected to the mounting bracket (11), its output end being coaxially fixed with one of the first screws (13); a second transmission belt assembly (15), located between the first screws (13); and two sets of limiting arms (16), rotatably connected to the first screws (13). Attached to the crossbeam (12), it can rotate to the bottom of the transfer unit to support it and restrict its rotation; the third motor (17) is fixedly connected in the mounting frame (11); the transition shaft (17a) is rotatably connected in the mounting frame (11) and is fixed coaxially with the output end of the third motor (17); the third transmission belt group (18) connects the transition shaft (17a) and one of the limiting arms (16) for synchronous transmission in the same direction; the gear group (19) connects the transition shaft (17a) and another set of limiting arms (16) for synchronous transmission in the opposite direction.

3. The follow-up roller changing trolley as described in claim 2, characterized in that, Each transfer unit includes: a base (21) rotatably connected to the mounting shaft (06); a limiting rail (22) fixedly connected to the top of the base (21); a transfer seat (23) slidably connected to the base (21) for loading the support roller shaft (00); and a first roller (24) rotatably connected to the bottom of the transfer seat (23), cooperating with the limiting rail (22) to restrict the directional movement of the transfer seat (23) and prevent it from detaching from the base (21).

4. The follow-up roller changing trolley as described in claim 3, characterized in that, Each transfer unit also includes: a second roller (25), rotatably connected to both sides of the transfer seat (23), used to reduce the contact friction between the transfer seat (23) and the base (21); an auxiliary roller (26), rotatably connected to the top of the transfer seat (23), used to reduce the contact friction between the roller shaft (00) and the transfer seat (23); and an auxiliary ball (27), rollingly disposed at the bottom of the base (21), used to reduce the contact friction between the base (21) and the support plate (09).

5. A follow-up roller changing trolley as described in claim 4, characterized in that, Each transfer unit has a base (21) with a locking groove (21a) and a side wall of the transfer seat (23) with an installation groove (23a). The device also includes a locking unit, which is located in the installation groove (23a) and is used to cooperate with the locking groove (21a) of the base (21) to lock the unfolded state of the transfer seat (23). Each locking unit includes: a mounting rod (31), fixedly connected to the mounting groove (23a); a locking block (32), slidably connected to the mounting groove (23a) via the mounting rod (31), with a beveled opening (36) in its middle; a first return spring (33), passing through the mounting rod (31), with both ends fixed to the locking block (32) and the mounting rod (31) respectively, for applying elastic force to the locking block (32) so that it tends to insert into the locking groove (21a); ​​a pressing block (34), slidably connected to the side wall of the transfer seat (23), with its front end passing through the side wall of the transfer seat (23) and extending into the opening (36) of the locking block (32), contacting the bevel inside the opening (36); and a second return spring (35), fixedly connected between the pressing block (34) and the transfer seat (23), for resetting the pressing block (34) when there is no external force.

6. The follow-up roller changing trolley as described in claim 5, characterized in that, The locking unit also includes a third roller (37), which is rotatably connected to the bottom of the locking block (32) to reduce the contact friction between the locking block (32) and the base (21).

7. A follow-up roller changing trolley as described in claim 6, characterized in that, The roller shaft (00) has an insertion port (00a) at its end; the device includes: a mounting frame (41), fixedly connected to the top of the frame (01) and corresponding to the position of the feed port (03); at least two sets of second screws (42), rotatably connected to the mounting frame (41); a connecting frame (43), slidably connected to the bottom of the frame (01) in the front-rear direction and threadedly engaged with the second screws (42); an electric insert block (44), fixedly connected to the connecting frame (43), which is controllably telescopic and used to insert into the insertion port (00a) at the end of the roller shaft (00) and connect to the roller shaft (00); a fourth motor (46), fixedly connected to the rear side of the mounting frame (41), whose output is coaxially fixed with one of the second screws (42); and a fourth transmission belt group (47), located between the second screws (42).

8. A follow-up roller changing trolley as described in claim 7, characterized in that, The device includes an electric pusher (45), which is fixedly connected to the lower part of the connecting frame (43) and is controllable in extension and retraction, for contacting and cooperating with the side wall of the transfer seat (23) and the extrusion block (34).

Images