Slitter shaft unloading and roll up apparatus and method

Abstract

A slitting machine unloading and rewinding device includes two movable end caps for clamping film rolls, and a longitudinally movable trolley. Two rewinding arms are fixedly mounted on the front of the trolley, with a mandrel support mounted at the front end of each arm. The trolley also has two unloading swing arms that can swing up and down. Each unloading swing arm is L-shaped and includes a front section, a middle section, and a rear section. A mandrel support is also mounted on the front section of each swing arm. Each mandrel support includes a rear support block, a middle support block, and a front support block. The front support block can swing up and down. After the front end of the front support block swings upward into position, the rear support block, the middle support block, and the front support block form an upward-facing fork. This invention also provides a slitting machine unloading and rewinding method. This invention allows for continuous unloading and rewinding using the same trolley.

Description

Technical Field

[0001] This invention belongs to the technical field of plastic film processing equipment, specifically relating to a slitting machine unloading and winding device and method. Background Technology

[0002] When the slitting machine cuts plastic film, the movable end clamps the end of the mandrel of the plastic film roll and drives the mandrel and film roll to rotate, and the film roll is continuously unwound to accept cutting. When the film roll of the movable end is completely unwound, it needs to be changed. The changing process includes removing the original mandrel (referred to as unwinding) and replacing it with a new film roll (referred to as winding). During the changing process, the movable end retracts laterally outward, the movable end retracts from the end of the original mandrel, the original mandrel is removed, and the transport trolley transports the new film roll (containing the new mandrel) to the side of the movable end. The movable end pushes outward laterally, the movable end inserts into the end of the new mandrel, and the weight of the new mandrel and the new film roll begins to be borne by the movable end, completing the unwinding and winding process.

[0003] Due to the heavy weight of the mandrel, it is difficult to move it directly by hand. In existing technology, to remove the original mandrel, a crane in the workshop is generally used to lift it away, and then a transport trolley transports the new film roll (containing the new mandrel) to the movable end. However, for some workshops (such as cleanrooms in optical film slitting workshops) where cranes cannot be installed, and some factories share a single crane (i.e., the workshop where the slitting machine is located does not have a crane), the roll changing process requires the assistance of a transport trolley to unload the mandrel. First, the transport trolley connects the original mandrel, then transports the original mandrel to another workshop in the factory equipped with a crane to lift it away. Then, the transport trolley loads the new film roll, and finally, the transport trolley transports the new film roll (containing the new mandrel) to the slitting station of the slitting machine for winding. Obviously, the above roll changing process is quite troublesome and time-consuming. Furthermore, the slitting machine needs to pause slitting for a long time due to roll changing. The above-mentioned pause slitting time includes the time when the transport trolley carries the original mandrel out of the workshop, the time when the overhead crane lifts the original mandrel away, the time when the transport trolley is loaded with the new film roll, and the time when the transport trolley carries the new film roll into the slitting workshop. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a slitting machine unloading and winding device and method that can continuously unload and wind up the shaft using the same trolley.

[0005] The objective can be achieved by the following scheme: a slitting machine unloading and winding device, including two movable plugs on the left and right for clamping the film roll, each movable plug being able to extend and retract laterally; and a trolley that can move longitudinally, with two upper winding arms fixedly installed on the front of the trolley, and a mandrel support installed at the front end of the upper winding arm, the vertical position of the mandrel support corresponding to the vertical position of the movable plug.

[0006] The trolley is also equipped with two unloading shaft swing arms that can swing up and down. The swing shaft of the unloading shaft swing arm extends laterally and is located at the rear of the trolley. It is also equipped with a hydraulic cylinder to drive the unloading shaft swing arm to swing up and down. Each unloading shaft swing arm is L-shaped and includes a front section, a middle section, and a rear section. The middle section connects the front section and the rear section. Each front section of the swing arm is also equipped with a spindle support.

[0007] When the mandrel support of the unloading swing arm swings to the same horizontal position as the mandrel support of the upper coil arm, the mandrel support of the unloading swing arm is located directly in front of the mandrel support of the upper coil arm, the front section of the unloading swing arm is located directly in front of the upper coil arm, and the rear section of the unloading swing arm is located on the lateral outside of the upper coil arm on the corresponding side.

[0008] Each spindle support includes a rear support block, a middle support block, and a front support block. The front support block can swing up and down, and the swing axis of the front support block extends laterally. The swing axis of the front support block is located at the rear end of the front support block. A cylinder is also provided to drive the front support block to swing. After the front end of the front support block swings upward to its position, the rear support block, the middle support block, and the front support block together form an upward-facing fork. After the front end of the front support block swings downward to its position, the upper surface of the front support block and the upper surface of the middle support block are on the same plane.

[0009] The upper surface of the middle support block of the upper coil arm is a horizontal plane; when the spindle support of the unloading swing arm swings to the same horizontal position as the spindle support of the upper coil arm, the upper surface of the middle support block of the spindle support of the unloading swing arm is a horizontal plane.

[0010] Better yet, it also features longitudinally extending guide rails, on which the trolley is mounted.

[0011] The so-called vertical position of the mandrel support corresponding to the vertical position of the movable plug means that the vertical position of the central axis of the mandrel placed on the mandrel support is the same as the vertical position of the central axis of the mandrel held by the movable plug.

[0012] A method for unloading and rewinding a slitting machine, using the aforementioned slitting machine unloading and rewinding equipment, includes the following steps:

[0013] (1) During normal operation, the movable plug clamps the end of the mandrel of the plastic film roll and drives the mandrel and film roll to rotate. The film roll is continuously unwound and cut. The mandrel of the film roll is called the original mandrel.

[0014] (2) When the membrane roll held by the movable end is about to be completely unwound, prepare to remove the original mandrel and replace it with a new membrane roll; the front support block of the mandrel support of the upper winding arm swings upward into place, and the rear support block, middle support block, and front support block of the mandrel support of the upper winding arm form an upward-facing fork; place the new mandrel between the mandrel supports of the two upper winding arms of the trolley, with the left and right ends of the new mandrel located in the fork of the upper winding arm, and the new mandrel is wound with a new membrane roll; the unloading swing arm descends until the mandrel of the unloading swing arm is... The support and the mandrel support of the upper coil arm are at the same horizontal position. The mandrel support of the unloading swing arm is located directly in front of the mandrel support of the upper coil arm. The front support block of the mandrel support of the unloading swing arm swings downward into place. The upper surface of the middle support block of the mandrel support of the unloading swing arm is horizontal. The upper surface of the front support block and the upper surface of the middle support block of the mandrel support of the unloading swing arm are at the same horizontal level. The trolley moves along the longitudinal guide rail to the rear of the slitting machine, and the mandrel support of the unloading swing arm comes to the rear of the movable plug.

[0015] (3) After the membrane roll of the movable plug is completely unwound, the trolley continues to move forward along the longitudinal guide rail until the middle support block of the mandrel support of the unloading swing arm comes directly below the original mandrel. Then the cylinder drives the front support block of the mandrel support of the unloading swing arm to swing upward into place. The rear support block, middle support block and front support block of the mandrel support of the unloading swing arm form a fork facing upward.

[0016] (4) The movable plug retracts laterally outward, the movable plug exits the end of the original mandrel, and the left and right ends of the original mandrel fall into the fork of the mandrel support of the unloading swing arm respectively; the oil cylinder drives the front ends of the left and right unloading swing arms to swing upward, and the left and right unloading swing arms drive the original mandrel to rise until the lowest point of the original mandrel is higher than the highest point of the new film roll.

[0017] (5) The trolley continues to move forward along the longitudinal guide rail until the longitudinal position of the new mandrel of the upper roll arm is aligned with the longitudinal position of the movable plug; the movable plug extends laterally inward and is inserted into the end of the new mandrel, and the weight of the new mandrel and the new film roll begins to be borne by the movable plug.

[0018] (6) The cylinder drives the front support block of the spindle support of the upper winding arm to swing downward into place, and the upper surface of the front support block of the upper winding arm and the upper surface of the middle support block are on the same horizontal plane.

[0019] (7) The trolley moves backward along the longitudinal guide rail, driving the upper winding arm, the unloading shaft swing arm, and the original mandrel to move backward and leave the slitting machine, completing the entire unloading and winding process.

[0020] The present invention has the following advantages and effects:

[0021] This invention enables continuous unloading and rewinding using the same trolley, making the roll change process convenient. Compared with traditional technology where no overhead crane is installed next to the slitting machine, this invention can significantly reduce the time required for the slitting machine to pause slitting due to roll change. Specifically, it saves the time required for the trolley to carry the original mandrel out of the workshop, the time required for the overhead crane outside the slitting workshop to lift the original mandrel away, the time required for the trolley to load the new film roll, and the time required for the trolley to carry the new film roll into the slitting workshop. Attached Figure Description

[0022] Figure 1 This is a top view of the structure of the first specific embodiment of the present invention.

[0023] Figure 2 yes Figure 1 A side view of the structure shown.

[0024] Figure 3 yes Figure 1 An enlarged structural diagram of the unloading swing arm.

[0025] Figure 4 yes Figure 2 A magnified schematic diagram of the mandrel support structure of the upper coil arm.

[0026] Figure 5 yes Figure 2 A magnified schematic diagram of the mandrel support structure of the unwinding swing arm.

[0027] Figure 6 This is a schematic diagram of step (2) of the first specific embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram of the first stage of step (3) in the first specific embodiment of the present invention.

[0029] Figure 8 This is a schematic diagram of the second stage of step (3) in the first specific embodiment of the present invention.

[0030] Figure 9 This is a schematic diagram of step (4) of the first specific embodiment of the present invention.

[0031] Figure 10 This is a schematic diagram of step (5) of the first specific embodiment of the present invention.

[0032] Figure 11 This is a schematic diagram of step (6) of the first specific embodiment of the present invention.

[0033] Figure 12 This is a schematic diagram of step (6) of the first specific embodiment of the present invention. Detailed Implementation Example 1

[0034] Figure 1 , Figure 2 , Figure 3 A slitting machine unloading and rewinding device includes two movable plugs 4 for clamping film rolls, each movable plug 4 being able to extend and retract laterally. It also has a longitudinally extending longitudinal guide rail 5, on which a trolley 6 capable of longitudinal movement is mounted. Two rewinding arms 2 are fixedly mounted on the front of the trolley 6, and a mandrel support 3 is mounted on the front end of each rewinding arm 2. The vertical position of the mandrel support 3 corresponds to the vertical position of the movable plug 4. The trolley 6 is also equipped with two unloading swing arms 1 that can swing up and down. The swing shaft 10 of the unloading swing arm extends laterally and is located at the rear of the trolley. It also has a hydraulic cylinder for driving the unloading swing arm 1 to swing up and down. Figure 1 , Figure 3 , Figure 9 As shown, each unloading shaft swing arm 1 is L-shaped, including a front section 11, a middle section 12, and a rear section 13. The middle section 12 is connected between the front section 11 and the rear section 13. Each front section 11 is also equipped with a spindle support 3.

[0035] When the spindle support 3 of the unloading swing arm 1 swings to the same horizontal position as the spindle support 3 of the upper winding arm, the spindle support 3 of the unloading swing arm 1 is located directly in front of the spindle support 3 of the upper winding arm 2 (meaning the lateral position of the spindle support 3 of the unloading swing arm 1 is the same as the lateral position of the spindle support 3 of the corresponding upper winding arm 2), the front section 11 of the unloading swing arm is located directly in front of the upper winding arm (meaning the lateral position of the front section 11 of the unloading swing arm is the same as the lateral position of the corresponding upper winding arm 2), and the rear section 13 of the unloading swing arm is located laterally outside the corresponding upper winding arm 2, such as... Figure 1 As shown;

[0036] Figure 4 , Figure 5 As shown, each spindle support 3 includes a rear support block 33, a middle support block 32, and a front support block 31. The front support block 31 can swing up and down, and the swing shaft 310 of the front support block extends laterally. The swing shaft 310 of the front support block is located at the rear end of the front support block 31. A cylinder 34 is also provided to drive the front support block 31 to swing up and down. After the front end of the front support block 31 swings upward to its position, the rear support block 33, the middle support block 32, and the front support block 31 form an upward-facing fork, as shown. Figure 4 As shown, and also as Figure 8 The spindle support 3 of the upper coil arm 2 and Figure 8 As shown in the spindle support 3 of the unloading swing arm 1; after the front end of the current support block 31 swings downward into place, the upper surface of the front support block 31 and the upper surface of the middle support block 32 are on the same plane, as shown in the figure. Figure 5 As shown, and also as Figure 11As shown in the mandrel support 3 of the upper coil arm 2, and as shown in the figure Figure 7 The spindle support 3 of the unloading swing arm 1 is shown;

[0037] Figure 2 , Figure 4 , Figure 6 As shown, the upper surface of the middle support block 32 of the spindle support of the upper coil arm 2 is a horizontal plane; Figure 2 , Figure 5 , Figure 6 As shown, when the spindle support 3 of the unloading swing arm 1 swings to the same horizontal position as the spindle support 3 of the upper winding arm 2, the upper surface of the middle support block 32 of the spindle support 3 of the unloading swing arm 1 is a horizontal plane.

[0038] The statement that the vertical position of the mandrel support 3 corresponds to the vertical position of the movable plug 4 means that the vertical position of the central axis of the mandrel placed on the mandrel support 3 is the same as the vertical position of the central axis of the mandrel held by the movable plug 4. Figure 8 As shown, when the longitudinal position of the mandrel support 3 is aligned with the longitudinal position of the movable plug 4, both ends of the mandrel can be inserted into the movable plug 4 from the lateral direction and fitted together. At the same time, the mandrel support 3 can support the mandrel from the vertical direction, and the weight of the mandrel can be transferred between the mandrel support 3 and the movable plug 4. Example 2

[0039] A method for unloading and rewinding a slitting machine, wherein the slitting machine is located in a cleanroom without an overhead crane, and the aforementioned slitting machine unloading and rewinding equipment is used, includes the following steps:

[0040] (1) During normal operation, the movable plug 4 clamps the end of the mandrel 72 of the plastic film roll and drives the mandrel 72 and the film roll to rotate. The film roll is continuously unwound and cut. The mandrel 72 of the film roll is called the original mandrel.

[0041] (2) When the membrane roll held by the movable plug 4 is about to be completely unwound, prepare to remove the original mandrel 72 and replace it with a new membrane roll; the front support block 31 of the mandrel support of the upper winding arm 2 swings upward into place, and the rear support block 33, the middle support block 32, and the front support block 31 of the mandrel support of the upper winding arm 2 form an upward-facing fork; place the new mandrel 71 between the mandrel supports 3 of the two upper winding arms 2 of the trolley, with the left and right ends of the new mandrel 71 located in the fork of the upper winding arm 2, and the new mandrel 71 is wound with a new membrane roll 8; the unloading swing arm 1 descends until the mandrel of the unloading swing arm 1 is... Support 3 and the mandrel support 3 of the upper coil arm 2 are at the same horizontal position. The mandrel support 3 of the unloading swing arm 1 is located directly in front of the mandrel support 3 of the upper coil arm 2. The front support block 31 of the mandrel support of the unloading swing arm 1 swings downward into place. The upper surface of the middle support block 32 of the mandrel support of the unloading swing arm 1 is a horizontal plane. The upper surface of the front support block 31 and the upper surface of the middle support block 32 of the mandrel support of the unloading swing arm 1 are at the same horizontal plane. The trolley 6 moves along the longitudinal guide rail 5 to the rear of the slitting machine. The mandrel support 3 of the unloading swing arm 1 comes to the rear of the movable plug 4. Figure 6 As shown;

[0042] (3) After the membrane roll of the movable plug 4 is completely unwound, the trolley 6 continues to move forward along the longitudinal guide rail 5 until the middle support block 32 of the mandrel support of the unloading swing arm 1 comes directly below the original mandrel 72, as shown. Figure 7 As shown; then, cylinder 34 drives the front support block 31 of the spindle support of the unloading shaft swing arm 1 to swing upward into position. The rear support block 33, the middle support block 32, and the front support block 31 of the spindle support of the unloading shaft swing arm 1 form an upward-facing fork, as shown. Figure 8 As shown;

[0043] (4) The movable plug 4 retracts laterally outward, and the movable plug 4 exits the end of the original mandrel 72. The left and right ends of the original mandrel 72 fall into the fork of the mandrel support 3 of the unloading swing arm 1, respectively. The hydraulic cylinder drives the front ends of the two unloading swing arms 1 to swing upward, and the two unloading swing arms 1 drive the original mandrel 72 to rise until the lowest point of the original mandrel 72 is higher than the highest point of the new film roll 8, such as Figure 9 As shown;

[0044] (5) The trolley 6 continues to move forward along the longitudinal guide rail 5 until the longitudinal position of the new mandrel 71 of the upper winding arm 2 is aligned with the longitudinal position of the movable plug 4; the movable plug 4 extends laterally inward (the movable plug 4 on the left extends to the right, and the movable plug 4 on the right extends to the left), and the two movable plugs 4 are respectively inserted into the left and right ends of the new mandrel 71. The weight of the new mandrel 71 and the new film roll 8 begins to be borne by the movable plug 4, such as Figure 10 As shown;

[0045] (6) The cylinder 34 drives the front support block 31 of the spindle support of the upper winding arm 2 to swing downward into place, and the upper surface of the front support block 31 of the upper winding arm 2 and the upper surface of the middle support block 32 are on the same horizontal plane, such as Figure 11 As shown;

[0046] (7) The trolley 6 moves backward along the longitudinal guide rail 5, driving the upper coil arm 2, the unloading shaft swing arm 1, and the original mandrel 72 to move backward and leave the slitting machine, as shown. Figure 12 As shown, the entire unloading and rewinding process is completed.

[0047] After that, the trolley 6, which has completed the entire unloading and rewinding process, can leave the cleanroom and arrive at the ordinary workshop, where the overhead crane will lift the original mandrel 72 off the unloading swing arm 1.

Claims

1. A slitting machine unloading and winding device, comprising two movable plugs for clamping film rolls, each movable plug being able to extend and retract laterally; and a trolley that can move longitudinally, wherein two winding arms are fixedly installed at the front of the trolley, and a mandrel support is installed at the front end of the winding arms, the vertical position of the mandrel support corresponding to the vertical position of the movable plugs. The trolley is also equipped with two unloading shaft swing arms that can swing up and down. The swing shaft of the unloading shaft swing arm extends laterally and is located at the rear of the trolley. It is also equipped with a hydraulic cylinder to drive the unloading shaft swing arm to swing up and down. Each unloading shaft swing arm is L-shaped and includes a front section, a middle section, and a rear section. The middle section connects the front section and the rear section. Each front section of the swing arm is also equipped with a spindle support. When the mandrel support of the unloading swing arm swings to the same horizontal position as the mandrel support of the upper coil arm, the mandrel support of the unloading swing arm is located directly in front of the mandrel support of the upper coil arm, the front section of the unloading swing arm is located directly in front of the upper coil arm, and the rear section of the unloading swing arm is located on the lateral outside of the upper coil arm on the corresponding side. Each spindle support includes a rear support block, a middle support block, and a front support block. The front support block can swing up and down, and the swing axis of the front support block extends laterally. The swing axis of the front support block is located at the rear end of the front support block. A cylinder is also provided to drive the front support block to swing. After the front end of the front support block swings upward to its position, the rear support block, the middle support block, and the front support block together form an upward-facing fork. After the front end of the front support block swings downward to its position, the upper surface of the front support block and the upper surface of the middle support block are on the same plane. The upper surface of the middle support block of the upper coil arm is a horizontal plane; when the spindle support of the unloading swing arm swings to the same horizontal position as the spindle support of the upper coil arm, the upper surface of the middle support block of the spindle support of the unloading swing arm is a horizontal plane.

2. The slitting machine unloading and winding device according to claim 1, characterized in that: It also features longitudinally extending guide rails, on which the trolley is mounted.

3. A method for unloading and rewinding a slitting machine, using the unloading and rewinding equipment of the slitting machine as described in claim 2, comprising the following steps: (1) During normal operation, the movable plug clamps the end of the mandrel of the plastic film roll and drives the mandrel and film roll to rotate. The film roll is continuously unwound and cut. The mandrel of the film roll is called the original mandrel. (2) When the membrane roll held by the movable end is about to be completely unwound, prepare to remove the original mandrel and replace it with a new membrane roll; the front support block of the mandrel support of the upper winding arm swings upward into position, and the rear support block, middle support block, and front support block of the mandrel support of the upper winding arm form an upward-facing fork; place the new mandrel between the mandrel supports of the two upper winding arms of the trolley, with the left and right ends of the new mandrel located in the fork of the upper winding arm, and the new mandrel is wound with a new membrane roll; the unloading swing arm descends until the core of the unloading swing arm... The shaft support and the mandrel support of the upper coil arm are at the same horizontal position. The mandrel support of the unloading swing arm is located directly in front of the mandrel support of the upper coil arm. The front support block of the mandrel support of the unloading swing arm swings downward into place. The upper surface of the middle support block of the mandrel support of the unloading swing arm is horizontal. The upper surface of the front support block and the upper surface of the middle support block of the mandrel support of the unloading swing arm are at the same horizontal level. The trolley moves along the longitudinal guide rail to the rear of the slitting machine, and the mandrel support of the unloading swing arm comes to the rear of the movable plug. (3) After the membrane roll of the movable plug is completely unwound, the trolley continues to move forward along the longitudinal guide rail until the middle support block of the mandrel support of the unloading swing arm comes directly below the original mandrel. Then the cylinder drives the front support block of the mandrel support of the unloading swing arm to swing upward into place. The rear support block, middle support block and front support block of the mandrel support of the unloading swing arm form an upward fork. (4) The movable plug retracts laterally outward, the movable plug exits the end of the original mandrel, and the left and right ends of the original mandrel fall into the fork of the mandrel support of the unloading swing arm respectively; the oil cylinder drives the front ends of the left and right unloading swing arms to swing upward, and the left and right unloading swing arms drive the original mandrel to rise until the lowest point of the original mandrel is higher than the highest point of the new film roll. (5) The trolley continues to move forward along the longitudinal guide rail until the longitudinal position of the new mandrel of the upper roll arm is aligned with the longitudinal position of the movable plug; the movable plug extends laterally inward and is inserted into the end of the new mandrel, and the weight of the new mandrel and the new film roll begins to be borne by the movable plug. (6) The cylinder drives the front support block of the spindle support of the upper winding arm to swing downward into place, and the upper surface of the front support block of the upper winding arm and the upper surface of the middle support block are on the same horizontal plane. (7) The trolley moves backward along the longitudinal guide rail, driving the upper winding arm, the unloading shaft swing arm, and the original mandrel to move backward and leave the slitting machine, completing the entire unloading and winding process.

Images