Working roll changing pinch device of aluminum foil mill
By designing a cam mechanism for positioning above the slider on the aluminum foil rolling mill, the problem of not being able to clean the work roll before it is lifted is solved, thus enabling the cleaning of the work roll and preventing damage, and improving equipment maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN XIASHUN ALUMINUM FOIL
- Filing Date
- 2025-04-18
- Publication Date
- 2026-04-14
AI Technical Summary
In the existing technology, the slider is positioned below the work roll, which prevents the work roll from separating from the roll changing trolley before it is lifted, making it impossible to clean, resulting in damage to the work roll and corrosion of the equipment.
Design a work roll changing clamping device for an aluminum foil rolling mill. The slider is positioned above and the slider is raised and lowered by a cam mechanism driven by a handle. This allows the work roll to be separated from the changing trolley before it is raised for cleaning.
This allows for cleaning of the work rolls before they are lifted, preventing damage to the work rolls and corrosion of the equipment, and making the operation convenient and quick.
Smart Images
Figure CN224114880U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of aluminum foil rolling mill technology, and specifically relates to a work roll changing and pinching device for aluminum foil rolling mill. Background Technology
[0002] Changing the work rolls on an aluminum foil rolling mill is a critical maintenance operation in the aluminum processing industry, directly impacting equipment efficiency, product quality, and production safety. The work roll replacement is performed using equipment such as a roll-changing trolley, a roll-changing carriage, and a roll-bending cylinder. The roll-changing trolley is equipped with a roll-changing track, and the roll-changing carriage slides along this track. During the roll replacement, the roll-changing trolley first moves to the front of the mill, engaging the roll-changing track with the mill's inner track. Then, the roll-changing carriage moves forward, lowering the work roll and positioning it. The carriage then reverses to remove the work roll. After removal, the roll-changing carriage moves forward again to deliver a new work roll onto the mill's inner track, and then the work roll rises to complete the replacement.
[0003] During the entire process of changing the work roll, the roll changing trolley is equipped with a slider for positioning and clamping the work roll. The top of the slider engages with the groove on the work roll shaft head to position the work roll. The roll changing trolley can drive the work roll forward or backward on the roll changing track. However, because the slider engages with the groove below the work roll, the space below the work roll is limited. Even if the slider is slidably set on the roll changing trolley, it cannot completely disengage from the groove when sliding downward. After the roll changing trolley sends the work roll into the inner track of the rolling mill, the work roll must be lifted by the bending cylinder on the rolling mill to separate the work roll from the roll changing trolley. That is, the roll changing trolley can only retreat and separate from the rolling mill after the work roll is lifted.
[0004] Before lifting, the work rolls need to be cleaned with rolling oil. If the work rolls are not cleaned before lifting, dirt particles will remain on them. After lifting, the two work rolls will be brought together under the pressure of the bending cylinder. These particles will cause varying degrees of damage to the two work rolls, as well as severe indentations at both ends, rendering the work rolls unusable. However, because the existing technology positions the work rolls below the sliding block, the work rolls cannot be separated from the roll-changing carriage before lifting. If rolling oil cleaning is performed before lifting, the dirty rolling oil will seep into the roll-changing carriage and the main roll-changing carriage, contaminating them and making them susceptible to corrosion and wear. Therefore, the existing technology cannot clean the work rolls before lifting, making them easily damaged and unusable. Utility Model Content
[0005] The purpose of this utility model is to provide a work roll changing and clamping device for an aluminum foil rolling mill. The slider positions the work roll from above, and the work roll can be separated from the slider before the work roll is lifted. The work roll can be lifted after cleaning, which solves the problem of work roll damage caused by not cleaning before lifting.
[0006] To achieve the above objectives, the solution of this utility model is as follows: a work roll changing and clamping device for an aluminum foil rolling mill, comprising a frame, a handle, a slider, and a connecting rod. The bottom of the frame is mounted on a roll changing trolley, and a handle is mounted on the top of the frame. The handle includes a cam portion and a lever portion. The outer peripheral surface of the cam portion abuts against the top surface of the frame, and the cam portion is eccentrically pivotally connected to one end of the connecting rod. The other end of the connecting rod is connected to the slider. Both the connecting rod and the slider are slidably mounted on the frame. When the handle is flipped by the lever portion, the cam portion flips to drive the connecting rod and the slider to move up and down, thereby causing the bottom of the slider to disengage upwards or engage downwards in the groove of the work roll shaft head.
[0007] Furthermore, the bottom of the slider is provided with an inclined surface on the side facing the work roller, and the inclined surface is engaged with the R-angle of the work roller shaft to drive the slider to move automatically upward.
[0008] Furthermore, the right side of the cam portion is connected to the lever portion. The outer peripheral surface of the cam portion that abuts against the frame includes an upper plane and a lower plane located on the upper and lower sides, as well as an arc surface located on the left side. The distance between the pivot point of the cam portion and the connecting rod and the upper plane is greater than the distance between the cam portion and the lower plane. When the cam portion flips to abut against the top surface of the frame on the upper plane, the slider rises; when the cam portion flips to abut against the top surface of the frame on the lower plane, the slider falls.
[0009] Furthermore, the cam portion is a U-shaped block, and one end of the connecting rod is located between the two arms of the U-shaped block. Both arms of the U-shaped block are provided with an upper plane, a lower plane, and an arc surface.
[0010] Furthermore, the cam portion is pivotally connected to one end of the connecting rod via a rotating shaft. One end of the connecting rod and the two arms of the U-shaped block are provided with pivot holes, and the rotating shaft passes through the pivot holes.
[0011] Furthermore, the top of the frame is provided with a horizontally arranged top plate, the outer periphery of the cam part abuts against the top surface of the top plate, the slider is arranged below the top plate, the top plate is provided with a through hole corresponding to the position of the slider, and the other end of the connecting rod passes through the through hole and connects to the slider.
[0012] Furthermore, the frame also includes a vertically arranged left side plate and a right side plate, the bottom of which are mounted on a roller changing trolley, the top plate is horizontally fixed to the top of which are the left side plate and the right side plate, and the slider is slidably disposed between the left side plate and the right side plate.
[0013] Furthermore, both the left and right side plates are provided with vertical guide grooves on their inner sides, and the slider is slidably disposed in the two guide grooves on both sides respectively.
[0014] Furthermore, the tops of the left and right side plates extend toward one side of the work roller to form an extension, the extension being located above the work roller, and the guide groove is disposed on the extension.
[0015] After adopting the above solution, the beneficial effects of this utility model are as follows:
[0016] This invention features a slider slidably mounted on a frame, providing sufficient lifting space for the slider. The slider is driven to rise and fall by a handle located above the frame. The handle includes a cam and a lever. The cam is eccentrically pivoted to a connecting rod, and its outer circumferential surface abuts against the top surface of the frame. Moving the lever drives the cam to rotate. During rotation, the cam's height remains constant as its outer circumferential surface remains in contact with the frame. The connecting rod then causes the slider to move up and down, allowing its bottom to either disengage upwards or engage downwards in the groove of the work roller shaft. This allows the slider to engage above the work roller shaft, enabling the roller-changing trolley to detach from the work roller before lifting. After the trolley retracts, the work roller can be cleaned before being lifted, preventing damage. Furthermore, the slider's movement is convenient and quick, driven solely by the lever. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the slider of this utility model descending to its lowest position;
[0018] Figure 2 This is a schematic diagram of the slider of this utility model rising to its highest position;
[0019] Figure 3 This is an exploded view of the roller changing and pinching device of this utility model;
[0020] Figure 4 This is a schematic diagram of the slider of this utility model;
[0021] Figure 5 This is a schematic diagram of the frame structure of this utility model;
[0022] Figure 6 This is a three-dimensional schematic diagram of the cooperation between the roller changing and clamping device of this utility model and the work roller;
[0023] Figure 7 This is a side view of the present invention with the slider not engaged in the groove;
[0024] Figure 8 This is a side view of the slider of this utility model being inserted into the groove.
[0025] 1. Frame; 11. Top plate; 111. Through hole; 12. Left side plate; 13. Right side plate; 14. Guide groove; 15. Extension; 16. Mounting plate; 2. Handle; 21. Cam part; 211. Upper plane; 212. Lower plane; 213. Arc surface; 214. Pivot hole; 22. Lever part; 3. Slider; 31. Inclined surface; 4. Connecting rod; 5. Work roller; 51. Groove; 52. R angle; 6. Bearing box; 61. Wheel; 7. Shaft. Detailed Implementation
[0026] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0027] like Figure 1-8 As shown, this utility model provides a work roll changing and pinching device for an aluminum foil rolling mill, including a frame 1, a handle 2, a slider 3, and a connecting rod 4. The bottom of the frame 1 is mounted on a roll changing trolley (not shown in the figure), and the handle 2 is mounted on the top of the frame 1. The handle 2 includes a cam part 21 and a lever part 22. The outer peripheral surface of the cam part 21 abuts against the top surface of the frame 1, and the cam part 21 is eccentrically pivotally connected to one end of the connecting rod 4 to form a cam mechanism. The other end of the connecting rod 4 is connected to the slider 3. Both rod 4 and slider 3 are slidably mounted on the frame 1. The lever 22 is used to manually drive the cam 21 to rotate. By moving the lever 22, the handle 2 can be rotated. Since the outer periphery of the cam 21 is always in contact with the top surface of the frame 1, the height of the cam 21 remains unchanged when it rotates. The eccentric pivot connection between the cam 21 and the connecting rod 4 will drive the connecting rod 4 and slider 3 to move up and down, thereby causing the bottom of the slider 3 to disengage upwards or engage downwards in the groove 51 of the working roller 5 shaft head. The state of the slider 3 engaging in the groove 51 is as follows: Figure 8 As shown, the state after exiting groove 51 is as follows Figure 7 As shown. The work roll 5 is fixed by the bearing housing 6. The bottom of the bearing housing 6 is provided with wheels 61, which can slide on the inner track of the rolling mill and the roll changing track. After the slider 3 is engaged in the groove 51, the roll changing trolley can drive the work roll 5 forward or backward, realizing the roll pulling and roll feeding process in changing the work roll 5.
[0028] This invention features a frame 1 mounted on a roller-changing trolley. The frame 1 provides sufficient lifting space for the slider 3, allowing the slider 3 to position the work roller 5 above it. The roller-changing trolley can be detached from the work roller 5 before it is lifted. After the roller-changing trolley retracts, the work roller 5 can be cleaned. After cleaning, the work roller 5 is then lifted, preventing damage to the work roller 5. Furthermore, the slider 3 can be raised and lowered by moving the lever 22, making operation convenient and quick.
[0029] by Figure 1For reference, the right side of the cam portion 21 is connected to the lever portion 22 but does not abut against the top surface of the frame 1. The outer periphery of the cam portion 21 that abuts against the frame 1 includes an upper plane 211 and a lower plane 212 located on the upper and lower sides, and an arc surface 213 located on the left side. The distance between the pivot point of the cam portion 21 and the connecting rod 4 and the upper plane 211 is greater than the distance between the pivot point and the lower plane 212. The arc surface 213 enables the cam portion 21 to flip. When the cam portion 21 flips to the point where the upper plane 211 abuts against the top surface of the frame 1, the slider 3 rises. Through the cooperation between the upper plane 211 and the top surface of the frame 1, the slider 3 can be maintained at the highest position. The state in which the slider 3 is maintained at the highest position can be seen in [reference needed]. Figure 1 When the cam 21 flips to the point where its lower plane 212 contacts the top surface of the frame 1, the slider 3 descends. Through the cooperation between the lower plane 212 and the top surface of the frame 1, the slider 3 can remain stationary at its lowest position. The state in which the slider 3 remains at its lowest position can be seen in [reference needed]. Figure 2 .
[0030] Furthermore, the cam portion 21 is a U-shaped block, and one end of the connecting rod 4 is located between the two arms of the U-shaped block. Each arm of the U-shaped block has an upper plane 211, a lower plane 212, and an arc surface 213. The U-shaped structure of the cam portion 21 increases gravity, ensuring that the slider 3 can be maintained at its highest and lowest positions. In addition, the cam portion 21 is pivotally connected to one end of the connecting rod 4 via a rotating shaft 7. Both the end of the connecting rod 4 and the two arms of the U-shaped block have pivot holes 214, and the rotating shaft 7 passes through the pivot holes 214.
[0031] Key references Figure 4 and Figure 7 The bottom of the slider 3, facing the working roller 5, has an inclined surface 31. This inclined surface 31 can engage with the radius (R) angle 52 of the working roller 5's shaft head to allow the slider 3 to move automatically upwards. Specifically, when the roller changing trolley moves forward, the slider 3 is at its lowest position. During this movement, the inclined surface 31 abuts against the radius (R) angle 52 of the working roller 5's shaft head, then slides relative to this angle, causing the slider 3 to rise. When the slider 3 reaches the groove 51 on the working roller 5's shaft head, it automatically descends and engages with the groove 51. Thus, when the roller changing trolley moves forward to position the working roller 5, the working roller 5 can be positioned without flipping the handle 2; simply keeping the slider 3 at its lowest position is sufficient. However, when the roller changing trolley moves backward to unlock the working roller 5, the handle 2 must be manually flipped first to drive the slider 3 upwards to disengage from the groove 51. The slider 3 remains at its highest position, and the roller changing trolley can then move backwards to separate from the working roller 5.
[0032] Key references Figure 1-3The top of the frame 1 is provided with a horizontally arranged top plate 11. The outer periphery of the cam part 21 abuts against the top surface of the top plate 11. The slider 3 is arranged below the top plate 11. The top plate 11 is provided with a through hole 111 corresponding to the position of the slider 3. The other end of the connecting rod 4 passes through the through hole 111 and is connected to the slider 3. The through hole 111 not only allows the connecting rod 4 to connect to the slider 3 below, but also restricts the connecting rod 4 to move only in the vertical direction.
[0033] Furthermore, the frame 1 also includes a vertically arranged left side plate 12 and a right side plate 13. The bottom of the left side plate 12 and the right side plate 13 are mounted on a roller changing trolley. A mounting plate 16 can be provided at the bottom of the left side plate 12 and the right side plate 13 respectively. The mounting plate 16 has screw mounting holes, and the frame 1 is mounted on the roller changing trolley by screws. The top plate 11 is horizontally fixed to the top of the left side plate 12 and the right side plate 13, and the slider 3 is slidably disposed between the left side plate 12 and the right side plate 13. Specifically, the inner side of the left side plate 12 and the right side plate 13 are provided with vertical guide grooves 14, and the two sides of the slider 3 are respectively slidably disposed in the two guide grooves 14.
[0034] Since the slider 3 is located between the left side plate 12 and the right side plate 13, when positioning the work roller 5, the shaft head of the work roller 5 needs to extend between the left side plate 12 and the right side plate 13, and the diameter of the shaft head of the work roller 5 needs to be smaller than the distance between the left side plate 12 and the right side plate 13. To accommodate work roller 5 shaft heads of different diameters, in this embodiment, the top of the left side plate 12 and the right side plate 13 are extended toward the side of the work roller 5 to form an extension 15. The extension 15 is located above the work roller 5, and the guide groove 14 is provided on the extension 15, so that the work roller 5 shaft head can be positioned without extending between the left side plate 12 and the right side plate 13, without limiting the diameter of the work roller 5 shaft head.
[0035] The above description is only a preferred embodiment of this utility model and is not intended to limit the design of this case. All equivalent changes made based on the key design of this case shall fall within the protection scope of this case.
Claims
1. A work roll changing and pinch device for an aluminum foil mill, characterized by: The device includes a frame, a handle, a slider, and a connecting rod. The bottom of the frame is mounted on a roller changing trolley, and the handle is mounted on the top of the frame. The handle includes a cam part and a lever part. The outer peripheral surface of the cam part abuts against the top surface of the frame, and the cam part is eccentrically pivotally connected to one end of the connecting rod. The other end of the connecting rod is connected to the slider. Both the connecting rod and the slider are slidably mounted on the frame. When the handle is flipped by the lever part, the cam part flips to drive the connecting rod and the slider to move up and down, thereby causing the bottom of the slider to disengage upward or engage downward into the groove of the work roller shaft.
2. The work roll changing and pinching device for an aluminum foil rolling mill as described in claim 1, characterized in that: The bottom of the slider has an inclined surface facing the working roller, and the inclined surface is engaged with the R-angle of the working roller shaft to drive the slider to move automatically upward.
3. The work roll changing and pinching device for an aluminum foil rolling mill as described in claim 1 or 2, characterized in that: The right side of the cam is connected to the lever. The outer peripheral surface of the cam that abuts against the frame includes an upper plane and a lower plane on the upper and lower sides, and an arc surface on the left side. The distance between the pivot point of the cam and the connecting rod and the upper plane is greater than the distance between the cam and the lower plane. When the cam flips to abut the upper plane and the top surface of the frame, the slider rises; when the cam flips to abut the lower plane and the top surface of the frame, the slider falls.
4. The work roll changing and pinching device for an aluminum foil rolling mill as described in claim 3, characterized in that: The cam portion is a U-shaped block, and one end of the connecting rod is located between the two arms of the U-shaped block. Both arms of the U-shaped block are provided with an upper plane, a lower plane, and an arc surface.
5. The work roll changing and pinching device for an aluminum foil rolling mill as described in claim 4, characterized in that: The cam is pivotally connected to one end of the connecting rod via a rotating shaft. One end of the connecting rod and the two arms of the U-shaped block are provided with pivot holes, and the rotating shaft passes through the pivot holes.
6. The work roll changing and pinching device for an aluminum foil rolling mill as described in claim 1, characterized in that: The top of the frame is provided with a horizontally arranged top plate. The outer periphery of the cam part abuts against the top surface of the top plate. The slider is arranged below the top plate. The top plate is provided with a through hole corresponding to the position of the slider. The other end of the connecting rod passes through the through hole and connects to the slider.
7. The work roll changing and pinching device for an aluminum foil rolling mill as described in claim 6, characterized in that: The frame also includes a vertically arranged left side plate and a right side plate. The bottom of the left side plate and the right side plate are mounted on a roller changing trolley. The top plate is horizontally fixed on the top of the left side plate and the right side plate. The slider is slidably arranged between the left side plate and the right side plate.
8. The work roll changing and pinching device for an aluminum foil rolling mill as described in claim 7, characterized in that: The inner sides of both the left and right side plates are provided with vertical guide grooves, and the slider is slidably disposed in the two guide grooves on both sides.
9. The work roll changing and pinching device for an aluminum foil rolling mill as described in claim 8, characterized in that: The top of the left and right side plates extends toward one side of the work roller to form an extension, the extension being located above the work roller, and the guide groove is disposed on the extension.