A full-width belt conveyor type fabric laying device

Abstract

The application discloses a full-width track conveying type cloth laying device, which comprises a rack, a cloth laying main machine, a cloth laying track, a feeding roller, a fabric transfer mechanism, a track tensioning mechanism and a walking belt arranged on the rack, a shearing mechanism arranged on the cloth laying main machine, the cloth laying main machine being in sliding connection with the rack and connected with the walking belt, the cloth laying track and the walking belt on the rack being annular, first, second and third track brakes corresponding to the cloth laying track being arranged on the cloth laying main machine, the walking belt being connected with the track tensioning mechanism, a speed regulating mechanism being arranged between the cloth laying track and the feeding roller, a driving motor being connected with the walking belt, a vibrating roller being arranged on the rack, the vibrating roller being capable of generating vibration on the upper layer of the cloth laying track at a cloth laying part, so that the fabric on the cloth laying track releases tension through the vibration, the deformation during cloth laying is reduced, and the cloth laying quality is improved.

Description

Technical Field

[0001] This invention belongs to the field of fabric laying machine technology, and more specifically relates to a full-width track conveyor fabric laying device. Background Technology

[0002] Traditional fabric spreading machines use roller-type fabric conveying mechanisms. After passing through multiple rollers, the fabric is directly laid on the spreading table. As the fabric passes through the rollers, tension is generated on its surface. For highly elastic fabrics such as Lycra, nylon, and polyester, the roller-type conveying structure can cause significant tension in the fabric, leading to shrinkage and deformation after the fabric is laid and cut, which affects the spreading efficiency and quality. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a full-width tracked conveyor fabric laying device that can release the tension of the fabric during the conveying process, reduce deformation during laying, and improve the quality of the fabric laying.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a full-width tracked conveyor fabric laying device, comprising a frame, on which a fabric laying host, a fabric laying track, a delivery roller, a fabric transfer mechanism, a track tensioning mechanism, and a traveling belt are mounted. The fabric laying host is equipped with a shearing mechanism. The fabric laying host is slidably connected to the frame and connected to the traveling belt. Both the fabric laying track and the traveling belt on the frame are annular. The fabric laying track includes a fabric laying section, a fixing section, and a tensioning section. The fabric laying section and the tensioning section are horizontal, and the fixing section is vertical. The fabric laying section... The machine is located above the frame and connected to the fabric laying host. The fixing part is located on one side of the frame. The tensioning part is connected to the track tensioning mechanism. The fabric laying host is equipped with a first track brake corresponding to the fabric laying track at the fabric laying position. The frame is equipped with a second track brake and a third track brake corresponding to the fabric laying track at the fixing part. The traveling belt is connected to the track tensioning mechanism. A speed regulating mechanism is provided between the fabric laying track and the delivery roller. A drive motor is connected to the traveling belt. A vibrating roller is provided on the frame. The vibrating roller can generate vibration on the upper layer of the fabric laying track at the fabric laying position.

[0005] Furthermore, the vibrating roller is located below the upper layer of the fabric section in the fabric-laying track and close to the fabric transfer mechanism, and the vibrating roller is in contact with the fabric-laying track.

[0006] Furthermore, the vibrating roller is rotatably connected to the frame, the cross-section of the vibrating roller is polygonal, the sides of the vibrating roller are rounded, the rounded sides support the fabric track, and the frame is equipped with a motor connected to the vibrating roller.

[0007] Furthermore, vibration supports are provided on both sides of the vibration roller, the vibration roller is rotatably connected to the vibration supports, the vibration supports are slidably connected to the frame, and a crank mechanism is connected to the vibration supports.

[0008] Furthermore, the fabric transfer mechanism includes a fabric pre-loosening support and a fabric loosening hopper. The fabric pre-loosening support is provided with a first fabric loosening roller and a second fabric loosening roller, and the fabric loosening hopper is provided with multiple freely rotatable support rollers.

[0009] Furthermore, the first track brake, the second track brake, and the third track brake all include a retractable pressure rod and a fixed support block corresponding to the pressure rod. The pressure rod and the support block of the first track brake are located on the upper and lower sides of the upper layer of the fabric section in the fabric track, respectively. The pressure rod and the support block of the second track brake are located on the left and right sides of the left side of the fixed section in the fabric track, respectively. The pressure rod and the support block of the third track brake are located on the left and right sides of the right side of the fixed section in the fabric track, respectively.

[0010] Furthermore, the track tensioning mechanism includes a tensioning plate, which is slidably connected to the frame. A track tensioning roller is rotatably connected to the tensioning plate. The fabric track is connected to the track tensioning roller. Both ends of the walking belt are connected to the tensioning plate. The track tensioning roller and the tensioning plate are slidably connected. The distance between the two ends of the walking belt on the tensioning plate is adjustable.

[0011] Furthermore, the speed regulating mechanism includes a first speed regulating wheel and a second speed regulating wheel, a speed changing mechanism is provided between the first speed regulating wheel and the second speed regulating wheel, the first speed regulating wheel is connected to the track roller supporting the fabric-laying track, and the second speed regulating wheel is connected to the delivery roller.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the fabric is laid on the laying table by the reciprocating operation of the full-width laying conveyor belt, and during the laying process, the laying conveyor belt can be vibrated by the vibrating roller, which in turn causes the fabric on the laying conveyor belt to vibrate, thereby releasing the tension on the fabric, reducing deformation during the laying process, and improving the laying quality; the pre-loosening effect of the fabric by the fabric transfer mechanism further reduces the tension on the fabric and reduces deformation during the laying process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front structure of the fabric laying device in this invention;

[0014] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0015] Figure 3 for Figure 1 Enlarged view of section B in the middle;

[0016] Figure 4 for Figure 1 Enlarged view of section C;

[0017] Figure 5 for Figure 1 Enlarged view of section D in the middle;

[0018] Figure 6 This is a schematic diagram of the speed regulation mechanism in the fabric laying device of the present invention;

[0019] Figure 7 and Figure 8 This is a schematic diagram of the fabric laying device in the present invention when performing unidirectional fabric laying;

[0020] Figure 9 and Figure 10 This is a schematic diagram of the fabric laying device in the present invention during cyclic fabric laying.

[0021] Reference numerals: 1. Frame; 2. Fabric laying main unit; 3. Fabric laying track; 4. Feeding roller; 5. Fabric transfer mechanism; 51. Fabric pre-loosening bracket; 52. Loosening hopper; 53. First loosening roller; 54. Second loosening roller; 55. Support roller; 6. Track tensioning mechanism; 61. Tensioning plate; 62. Track tensioning roller; 7. Traveling belt; 8. Shearing mechanism; 9. First track brake; 10. Second track brake; 11. Third track brake; 12. Speed ​​regulating mechanism; 13. Vibrating roller; 14. Pressure bar; 15. Support block; 16. First speed regulating wheel; 17. Second speed regulating wheel; 18. Track roller; 19. Limit sensor; 20. Fabric pressing bracket; 21. Fabric pressing roller. Detailed Implementation

[0022] In the description of this invention, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this invention, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0024] Reference Figures 1 to 10 The present invention will be further described below.

[0025] A full-width crawler conveyor fabric laying device includes a frame 1, on which a fabric laying main machine 2, a fabric laying crawler 3, a delivery roller 4, a fabric transfer mechanism 5, a crawler tensioning mechanism 6 and a walking belt 7 are provided. A shearing mechanism 8 is provided on the fabric laying main machine 2. The fabric laying main machine 2 is slidably connected to the frame 1 and connected to the walking belt 7. The fabric laying crawler 3 and the walking belt 7 on the frame 1 are both annular. The fabric laying crawler 3 includes a fabric laying part, a fixed part and a tensioning part. The fabric laying part and the tensioning part are in a horizontal state, and the fixed part is in a vertical state. The fabric laying part is located above the frame 1 and connected to the fabric laying main machine 2. The fixed part is located on one side of the frame 1. The tensioning part is connected to the crawler tensioning mechanism 6. A first crawler brake 9 corresponding to the fabric laying crawler 3 at the fabric laying position is provided on the fabric laying main machine 2. A second crawler brake 10 and a third crawler brake 11 corresponding to the fabric laying crawler 3 at the fixed part are provided on the frame 1. The walking belt 7 is connected to the crawler tensioning mechanism 6. A speed regulating mechanism 12 is provided between the fabric laying crawler 3 and the delivery roller 4. A driving motor is connected to the walking belt 7. A vibrating roller 13 is provided on the frame 1. The vibrating roller 13 can vibrate the upper layer of the fabric laying crawler 3 at the fabric laying part, so as to release the tension of the fabric on the fabric laying part, reduce the deformation of the fabric during laying, and improve the laying quality.

[0026] As Figure 1 described, preferably, the fabric laying part, the fixed part and the tensioning part of the fabric laying crawler 3 form a "C" shape on the frame 1.

[0027] Preferably, a fabric laying table is provided on the frame 1. The fabric laying main machine 2 and the fabric laying part of the fabric laying crawler 3 are located above the fabric laying table.

[0028] Preferably, a plurality of crawler rollers 18 are provided on the frame 1 for supporting the operation of the fabric laying crawler 3.

[0029] As Figure 3 shown, in the present embodiment, preferably, the vibrating roller 13 is located below the upper layer of the fabric laying crawler 3 at the fabric laying part and is close to the fabric transfer mechanism 5. The vibrating roller 13 abuts against the fabric laying crawler 3.

[0030] As Figure 3As shown, in this preferred embodiment, the vibrating roller 13 is rotatably connected to the frame 1. The cross-section of the vibrating roller 13 is polygonal, and the sides of the vibrating roller 13 are rounded. The rounded sides lift up the fabric track 3. The frame 1 is equipped with a motor connected to the vibrating roller 13. Through the continuous rotation of the vibrating roller 13, the rounded sides of the vibrating roller 13 continuously raise the fabric track 3 in contact with it, thereby generating a vibration effect on the fabric track 3.

[0031] Preferably, another alternative vibration method is that vibration brackets are provided on both sides of the vibration roller 13, the vibration roller 13 is rotatably connected to the vibration brackets, the vibration brackets are slidably connected to the frame 1, and a crank mechanism is connected to the vibration brackets, so that the vibration roller 13 generates reciprocating vibration in the vertical direction on the fabric track 3.

[0032] like Figure 3 As shown in the preferred embodiment, the fabric transfer mechanism 5 includes a fabric pre-loosening support 51 and a loosening hopper 52. The fabric pre-loosening support 51 is provided with a first loosening roller 53 and a second loosening roller 54. The loosening hopper 52 is provided with multiple freely rotatable support rollers 55. The fabric between the first loosening roller 53 and the second loosening roller 54 is in a natural hanging state, so that the tension generated when the fabric is rolled up can be released, reducing the deformation during laying.

[0033] like Figure 2 and Figure 4 As shown in the preferred embodiment, the first track brake 9, the second track brake 10, and the third track brake 11 each include a retractable pressure rod 14 and a fixed support block 15 corresponding to the pressure rod 14. The pressure rod 14 and the support block 15 of the first track brake 9 are located on the upper and lower sides of the upper layer of the fabric section in the fabric track 3, respectively. The pressure rod 14 and the support block 15 of the second track brake 10 are located on the left and right sides of the left side of the fixed section in the fabric track 3, respectively. The pressure rod 14 and the support block 15 of the third track brake 11 are located on the left and right sides of the right side of the fixed section in the fabric track 3, respectively.

[0034] like Figure 4 As shown, preferably, the second track brake 10 and the third track brake 11 share a common support block 15, and the two sides of the support block 15 are the pressure rods 14 in the second track brake 10 and the third track brake 11, respectively.

[0035] like Figure 5 As shown, in this preferred embodiment, the track tensioning mechanism 6 includes a tensioning plate 61, which is slidably connected to the frame 1. A track tensioning roller 62 is rotatably connected to the tensioning plate 61. The fabric track 3 is connected to the track tensioning roller 62, and both ends of the walking belt 7 are connected to the tensioning plate 61.

[0036] like Figure 5 As shown, preferably, the track tensioning roller 62 and the tensioning plate 61 are slidably connected, and the distance between the two ends of the walking belt 7 on the tensioning plate 61 is adjustable, which can respectively realize the tensioning of the laying track 3 and the walking belt 7.

[0037] like Figure 6 As shown in the preferred embodiment, the speed regulating mechanism 12 includes a first speed regulating wheel 16 and a second speed regulating wheel 17. A speed changing mechanism is provided between the first speed regulating wheel 16 and the second speed regulating wheel 17. The first speed regulating wheel 16 is connected to the track roller 18 that supports the fabric-laying track 3, and the second speed regulating wheel 17 is connected to the delivery roller 4.

[0038] like Figure 6 As shown, preferably, the transmission mechanism can be a belt-driven continuously variable transmission (CVT) mechanism, the principle of which can be the same as that of a continuously variable transmission in a car, such as the continuously variable transmission for cars shown in patent publication number CN104595442A, or it can be a continuously variable transmission mechanism used in other fields in the prior art.

[0039] like Figure 6 As shown, preferably, the first speed regulating wheel 16 and the track roller 18, and the second speed regulating wheel 17 and the delivery roller 4 are both driven by chains and sprockets.

[0040] During fabric laying, the fabric laying host 2 is located at the starting point of fabric laying and close to the fabric transfer mechanism 5. The rolled fabric is placed in the loosening hopper 52, and the end of the fabric is sequentially passed around the first loosening roller 53, the second loosening roller 54 and the delivery roller 4, and then extended into the fabric laying host 2 along the fabric laying conveyor 3.

[0041] When laying fabric in one direction:

[0042] like Figure 7 As shown, the first step is to pull the fabric. The pressure rod 14 on the first track brake 9 extends, pressing the upper belt of the fabric laying track 3 and the fabric on the upper belt against the support block 15, so that the fabric laying track 3 and the fabric are relatively fixed. The drive motor drives the traveling belt 7 to move counterclockwise. Since the fabric laying host 2 and the tensioning plate 61 are both connected to the traveling belt 7, when the traveling belt 7 moves counterclockwise, the fabric laying host 2 moves to the left from the starting position away from the fabric transfer mechanism 5, and the tensioning plate 61 moves in the opposite direction. The fabric spreading section in the spreading track 3 extends to the left as the spreading host 2 moves. During the extension, the upper and lower belts of the spreading section move to the left at the same time. The moving spreading track 3 drives the track roller 18 to rotate, and then drives the speed adjustment mechanism 12 to run. After the speed adjustment mechanism 12 adjusts the speed, it drives the delivery roller 4 to rotate. Thus, the delivery roller 4 spreads the fabric on the continuously extending spreading track 3 at a certain speed until the spreading host 2 moves to the end of the spreading operation and completes the fabric spreading operation.

[0043] like Figure 8 As shown, in the second step of unidirectional fabric laying, the pressure rod 14 on the first track brake 9 retracts and releases, while the pressure rod 14 on the third track brake 11 extends, pressing the right side of the fixed part of the fabric laying track 3 onto the support block 15. The drive motor then drives the walking belt 7 to move clockwise. Since the fabric laying host 2 and the tension plate 61 are both connected to the walking belt 7, when the walking belt 7 moves clockwise, the fabric laying host 2 moves from the end point to the right and approaches the fabric transfer mechanism 5, while the tension plate 61 moves in the opposite direction. The fabric laying part in the fabric laying track 3 retracts to the right as the fabric laying host 2 moves. When it retracts, the lower layer of the fabric laying part moves to the right while the upper layer is fixed. At this time, the delivery roller 4 stops rotating, and the fabric on the fabric laying track 3 is gradually laid flat on the fabric laying table by the fabric laying host 2 until the fabric laying host 2 moves to the starting point of the fabric laying. The re-cutting mechanism 8 on the fabric laying host 2 cuts the fabric, completing one unidirectional fabric laying.

[0044] By repeating the above two steps, the fabric can be laid in a cyclical, one-way manner, so that the front or back of each layer of fabric is facing upwards.

[0045] When laying the fabric in a loop:

[0046] like Figure 9 As shown, in the first step, the fabric is laid for the first time. The pressure rod 14 on the third track brake 11 retracts and releases, while the pressure rod 14 on the second track brake 10 extends, pressing the left side of the fixed part of the fabric laying track 3 against the support block 15. The drive motor then drives the traveling belt 7 to move counterclockwise. Since the fabric laying host 2 and the tensioning plate 61 are both connected to the traveling belt 7, when the traveling belt 7 moves counterclockwise, the fabric laying host 2 moves to the left from the starting point away from the fabric transfer mechanism 5, while the tensioning plate 61 moves in the opposite direction. The fabric laying part in the fabric laying track 3 moves to the left continuously as the fabric laying host 2 moves. The fabric is extended, and during the extension, the upper belt of the fabric laying section moves to the left while the lower belt is fixed. The moving fabric laying track 3 drives the track roller 18 to rotate, and then drives the speed adjustment mechanism 12 to run. After the speed adjustment mechanism 12 adjusts the speed, it drives the delivery roller 4 to rotate, so that the fabric is laid flat on the continuously extending fabric laying track 3 at a certain speed through the delivery roller 4. At the same time, the fabric laying host 2 lays the fabric laid on the fabric laying track 3 on the fabric laying table until the fabric laying host 2 moves to the end of the fabric laying and completes the first fabric laying. At this time, the fabric laying table and the fabric laying section of the fully extended fabric laying track 3 are both covered with fabric.

[0047] like Figure 10As shown, in the second step, the second fabric laying is performed. The pressure rod 14 on the second track brake 10 retracts and releases, while the pressure rod 14 on the third track brake 11 extends, pressing the right side of the fixed part of the fabric laying track 3 onto the support block 15. The drive motor then drives the walking belt 7 to move clockwise. Since the fabric laying host 2 and the tension plate 61 are both connected to the walking belt 7, when the walking belt 7 moves clockwise, the fabric laying host 2 moves from the end point to the right and approaches the fabric transfer mechanism 5, while the tension plate 61 moves in the opposite direction. The fabric laying part in the fabric laying track 3 retracts to the right as the fabric laying host 2 moves. When retracting, the upper layer of the fabric laying part is fixed while the lower layer moves to the right. At this time, the delivery roller 4 stops rotating, and the fabric on the fabric laying track 3 is gradually laid flat on the fabric laid in the first laying through the fabric laying host 2 until the fabric laying host 2 moves to the starting point of the fabric laying. The cutting mechanism 8 on the fabric laying host 2 then cuts the fabric, completing one cycle of fabric laying. That is, the fabric for every two layers of fabric laying is the same piece of fabric.

[0048] By repeating the above two steps, the fabric can be laid in a cyclical manner, so that the front or back sides of each two layers of fabric are laid facing each other.

[0049] Preferably, if the fabric does not have a front and back, the fabric can be cut by the cutting mechanism 8 during the first laying of the cyclic laying, so as to achieve the laying requirement of one piece of fabric as one layer as the unidirectional laying, and the efficiency is higher than that of the unidirectional laying method.

[0050] like Figure 6 As shown, preferably, the frame 1 is provided with a pressing support 20, and the pressing support 20 is provided with a pressing roller 21. The pressing roller 21 is located below the loosening roller. The fabric passes under the pressing roller 21 and is laid flat on the fabric laying conveyor 3, which is used to flatten the fabric before it is laid flat.

[0051] like Figure 3 As shown, preferably, the fabric pre-loosening bracket 51 is provided with a limit sensor 19, including an upper limit and a lower limit, so that the height of the bottom of the drooping fabric can always be maintained between the upper limit and the lower limit, and the height of the bottom of the drooping fabric is controlled by driving the walking belt 7 through the drive motor.

[0052] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An apparatus for full-width belt conveyor laying of fabric, characterized by: The machine includes a frame, on which are mounted a fabric laying main unit, a fabric laying conveyor belt, a delivery roller, a fabric transfer mechanism, a conveyor belt tensioning mechanism, and a traveling belt. The fabric laying main unit is equipped with a shearing mechanism. The fabric laying main unit is slidably connected to the frame and also connected to the traveling belt. Both the fabric laying conveyor belt and the traveling belt on the frame are annular. The fabric laying conveyor belt includes a fabric laying section, a fixing section, and a tensioning section. The fabric laying section and the tensioning section are horizontal, while the fixing section is vertical. The fabric laying section is located above the frame and connected to the fabric laying main unit. Located on one side of the frame, the tensioning part is connected to the track tensioning mechanism. The fabric laying host is equipped with a first track brake corresponding to the fabric laying track at the fabric laying position. The frame is equipped with a second track brake and a third track brake corresponding to the fabric laying track at the fixing position. The traveling belt is connected to the track tensioning mechanism. A speed regulating mechanism is provided between the fabric laying track and the delivery roller. A drive motor is connected to the traveling belt. A vibrating roller is provided on the frame. The vibrating roller can generate vibration on the upper layer of the fabric laying track at the fabric laying position. The first track brake, the second track brake, and the third track brake all include a retractable pressure rod and a fixed support block corresponding to the pressure rod. The pressure rod and the support block of the first track brake are located on the upper and lower sides of the upper layer of the fabric part in the fabric track, respectively. The pressure rod and the support block of the second track brake are located on the left and right sides of the left side of the fixed part in the fabric track, respectively. The pressure rod and the support block of the third track brake are located on the left and right sides of the right side of the fixed part in the fabric track, respectively. The track tensioning mechanism includes a tensioning plate, which is slidably connected to the frame. A track tensioning roller is rotatably connected to the tensioning plate. The fabric track is connected to the track tensioning roller. Both ends of the walking belt are connected to the tensioning plate. The track tensioning roller and the tensioning plate are slidably connected. The distance between the two ends of the walking belt on the tensioning plate is adjustable. The fabric transfer mechanism includes a fabric pre-loosening bracket and a fabric loosening hopper. The fabric pre-loosening bracket is equipped with a first fabric loosening roller and a second fabric loosening roller. The fabric loosening hopper is equipped with multiple freely rotatable support rollers. During fabric laying, the fabric laying host is located at the starting point of the fabric laying process and close to the fabric transfer mechanism. The rolled fabric is placed in the loosening hopper, and the end of the fabric is sequentially passed around the first loosening roller, the second loosening roller and the delivery roller, and then extended into the fabric laying host along the fabric laying conveyor belt.

2. The full-width, belt conveyor laid fabric apparatus according to claim 1, wherein: The vibrating roller is located below the upper layer of the fabric section in the fabric-laying track and close to the fabric transfer mechanism, and the vibrating roller is in contact with the fabric-laying track.

3. The full-width, belt conveyor laid fabric apparatus according to claim 2, wherein: The vibrating roller is rotatably connected to the frame. The cross-section of the vibrating roller is polygonal, and the sides of the vibrating roller are rounded. The rounded sides support the fabric track. The frame is equipped with a motor that connects to the vibrating roller.

4. The full-width, belt conveyor laid fabric apparatus according to claim 2, wherein: Vibration supports are provided on both sides of the vibration roller. The vibration roller is rotatably connected to the vibration supports, and the vibration supports are slidably connected to the frame. A crank mechanism is connected to the vibration supports.

5. The full-width, conveyorized fabric laying device of claim 1, wherein: The speed regulating mechanism comprises a first speed regulating wheel and a second speed regulating wheel, a speed changing mechanism is arranged between the first speed regulating wheel and the second speed regulating wheel, the first speed regulating wheel is connected with a track roller supporting the cloth laying track, and the second speed regulating wheel is connected with a delivery roller.

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