Automatic roll changing device

Abstract

The utility model discloses an automatic roll changing device which comprises a rotating tower, a full foil material winding drum and an empty foil material winding drum are installed at the opposite corners of the rotating tower respectively, the automatic roll changing device further comprises a fixing frame installed close to the empty foil material winding drum, and the fixing frame rotates along a center shaft parallel to the empty foil material winding drum. A row cutter used for cutting foil during roll changing and a pressing roller used for pressing the foil on an empty foil winding drum bonded with double-faced adhesive tape are slidably mounted on the two sides of the fixing frame respectively, the fixing frame rotates to a designated position, and when the row cutter and the pressing roller slide to the designated position, cutting of the foil by the row cutter and pressing bonding of the foil by the pressing roller are completed. Therefore, during automatic roll changing, the automatic roll changing device in the embodiment changes the form of a turret and a cutting roller combined device in the prior art, and adopts the form of the turret and a fixed frame (a gang tool and a rubber roller), so that the problems of difficulty in adjustment, easiness in roll changing failure and the like in the original automatic roll changing mode are solved, the roll changing success rate is increased, and continuous production of a coating process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to an automatic roll-changing device. Background Art

[0002] Coating is a crucial process in lithium-ion battery production. The general flow is: foil incoming - foil loading - coating - drying - rewinding. This involves two key steps: unwinding and rewinding. The fiercely competitive new energy industry, which is embracing continuous coating, presents new challenges: automated unwinding and rewinding roll-changing to achieve continuous production on the coating line and improve efficiency.

[0003] Most current automated roll changes for unwinding and rewinding use a "turret + cutting roller combination." Taking unwinding as an example, when the foil is about to be used up, the turret rotates so that the empty foil unwind drum is placed outside. The operator presses the "ready to rewind" button, and the cutting roller combination behind the tape-feeding turret rises to a predetermined height. The full foil roll is now placed above the cutting roller combination, with the interface with double-sided tape aligned with the rubber roller below. When the foil on the outside is about to be empty, the operator presses the rewind button, and the cutter cuts the foil upward. Then, within a very short time interval, the rubber roller pushes upward, achieving compression and bonding between the end / cut of the old foil and the interface of the double-sided tape on the full foil. Simultaneously, the new, full foil roll inside rapidly rotates in the same direction at a linear speed consistent with the tape-feeding speed, ensuring continuous and uninterrupted operation of the production line.

[0004] However, this type of automatic roll changer has the following drawbacks: 1) The raised standby height of the cutting roller assembly is difficult to determine; if the diameter of the incoming foil roll changes, the raised standby height must be recalibrated; 2) The raised standby height and working height of the cutter blade are difficult to determine. This makes automatic roll change difficult to accurately control. Before changing rolls, the raised standby height and working height of the cutting roller assembly and cutter blade must be determined, which is difficult to adjust, complicated, time-consuming, and labor-intensive, and may also cause interruptions in coating production. Utility Model Content

[0005] In order to solve the technical problems existing in the background technology, the utility model proposes an automatic roll changing device.

[0006] The utility model proposes an automatic roll-changing device, comprising a turret, wherein a full foil roll and an empty foil roll are respectively installed at opposite corners of the turret, and further comprising a fixed frame installed near the empty foil roll, wherein the fixed frame rotates along a central axis parallel to the empty foil roll, and both sides of the fixed frame are slidably mounted with a row of cutters for cutting the foil when changing the roll and a pressing roller for pressing the foil against the empty foil roll with double-sided tape. When the fixed frame rotates to a specified position and the row of cutters and the pressing roller slide to the specified position, the row of cutters cuts the foil and the pressing and bonding of the foil by the pressing roller is completed.

[0007] In summary, when performing automatic roll changing, the device changes the previous form of "turret + cutting roller combination device" and adopts the form of "turret + fixed frame (knife row + rubber roller)", avoiding the problems of difficult adjustment and easy roll changing failure in the original automatic roll changing mode, improving the roll changing success rate and ensuring the continuous production of the coating process.

[0008] Preferably, a driving assembly is also included, which includes a first driving mechanism for driving the turret to rotate, a second driving mechanism for driving the fixed frame to rotate, and a third driving mechanism for driving the cutter row and the pressing roller to slide along the fixed frame. Both sides of the fixed frame are provided with slide rails extending along the length direction thereof, and a slider is slidably connected to the slide rail, and the cutter row and the pressing roller are connected to the outside of the slider.

[0009] The sliding connection can easily adjust the position and height of the knife row and rubber roller.

[0010] Preferably, the first drive mechanism, the second drive mechanism and the third drive mechanism are configured to be electrically driven, pneumatically driven or hydraulically driven.

[0011] Ensure the rotation stability of the fixed frame and turret, and the stability of the knife row and rubber roller sliding on the slide rail.

[0012] Preferably, a slot is provided on the outer side of the slider, and both ends of the cutter row are respectively clamped in the slots on both sides; and both ends of the pressing roller are respectively clamped in the slots on both sides.

[0013] Easy to install the cutter and pressing roller, easy to install.

[0014] Preferably, the turret is configured as a diamond structure, and the turret rotates along the center of the diamond structure.

[0015] Preferably, the device further comprises a controller, wherein the controller is communicatively connected to the driving component, and the controller is connected to an operation panel, and the operation panel is provided with operation buttons.

[0016] It is convenient to control the work of each component, and the position and height of each component can be set in advance, which is convenient for operators to operate.

[0017] Preferably, the operation buttons include a "roll change preparation" button, a "roll change" button, and a "roll change completion" button.

[0018] In summary, the present invention offers the following beneficial effects: During automatic roll change, the cutters and pressure rollers on both sides first slide along the fixed frame to a predetermined position and wait, then the fixed frame rotates as a whole, performing "cutting by the cutters + pressing by the pressure rollers" at the appropriate time, achieving automatic roll change on the coating production line. This eliminates the difficulty associated with conventional roll change mechanisms in verifying factors such as the height of the rubber roller rise and the timing of the cutters' exit. By utilizing an integrated, fixed linkage mechanism, the "cutting" and "pressing" functions are fully linked with zero delay, enabling continuous, uninterrupted coating production that is easy to adjust and minimizes waste.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the automatic roll changing process of the automatic roll changing device according to an embodiment of the present invention;

[0021] Figure 2 This is an exploded view of the installation of the slide rail and the slider on the fixed frame according to an embodiment of the utility model;

[0022] Figure 3 This is a diagram showing the installation and coordination of the slide rail and the slider on the fixed frame according to an embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the cooperation between the pressing roller and the slider in an embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the cooperation between the cutter row and the slider in an embodiment of the present utility model.

[0025] In the picture:

[0026] 1. Full foil reel; 2. Empty foil reel; 3. Fixed frame; 4. Cutting knife; 5. Rubber roller; 6. Slide rail; 7. Slider; 8. Turret; 9. Slot. DETAILED DESCRIPTION

[0027] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figure 1-5 As shown, an automatic roll changing device proposed in this embodiment includes a turret 8, and a full foil roll 1 and an empty foil roll 2 are respectively installed at opposite corners of the turret 8. It also includes a fixed frame 3 installed near the empty foil roll 2, and the fixed frame 3 rotates along a central axis parallel to the empty foil roll 2. A knife 4 for cutting the foil when changing the roll and a pressing roller 5 for pressing the foil on the empty foil roll 2 with double-sided tape are respectively slidably installed on both sides of the fixed frame 3. When the fixed frame 3 rotates to the specified position and the knife 4 and the pressing roller 5 slide to the specified position, the cutting of the foil by the knife 4 and the pressing and bonding of the foil by the pressing roller 5 are completed.

[0029] Specifically, the turret 8 is configured as a diamond structure, and the turret 8 rotates along the center of the diamond structure. The pressing roller 5 can be configured as a rubber roller.

[0030] Thus, during automatic roll change, the cutters 4 and pressure rollers 5 on either side first slide along the fixed frame 3 to a predetermined position and wait. The fixed frame 3 then rotates as a whole, performing "cutting with the cutters and pressing with the pressure rollers" at the appropriate time, achieving automatic roll change on the coating line. This eliminates the difficulty encountered by conventional roll change mechanisms in verifying factors such as the height of the rubber roller rise and the time it takes for the cutters 4 to come out. By using an integrated, fixed linkage mechanism, the "cutting" and "pressing" operations are fully linked with zero delay, enabling continuous, uninterrupted coating production that is easy to adjust and minimizes waste.

[0031] Furthermore, it also includes a driving assembly, which includes a first driving mechanism for driving the turret 8 to rotate, a second driving mechanism for driving the fixed frame 3 to rotate, and a third driving mechanism for driving the cutter row 4 and the pressing roller 5 to slide along the fixed frame 3. Figure 2 and Figure 3 As shown, both sides of the fixing frame 3 are provided with slide rails 6 extending along the length direction thereof, and a slider 7 is slidably connected to the slide rails 6 , and the cutter row 4 and the pressing roller 5 are connected to the outer side of the slider 7 .

[0032] Furthermore, if Figure 4 and Figure 5 As shown, a slot 9 is provided on the outer side of the slider 7, and the two ends of the cutter row 4 are respectively clamped in the slots 9 on both sides; the two ends of the pressing roller 5 are respectively clamped in the slots 9 on both sides.

[0033] Preferably, for convenient control, a controller is further included, the controller being communicatively connected to the drive assembly, the controller being connected to an operation panel, and the operation panel being provided with operation buttons, specifically, the operation buttons including a "roll change preparation" button, a "roll change" button, and a "roll change completion" button.

[0034] Specifically, the first drive mechanism, the second drive mechanism and the third drive mechanism are configured to be electrically driven, pneumatically driven or hydraulically driven, and the movement of the cutter 4 and the rubber roller 5 on the slide rail 6 of the fixed frame 3 is electrically driven, pneumatically driven or the like, and can be fixed at any position or fixed in an emergency stop; the positions of the cutter 4 and the rubber roller 5 on the slide rail 6 of the fixed frame 3 can be pre-set by the controller, including: a standby position when no roll is changed, a standby position when preparing for roll change; by controlling the movement mode of the cutter 4 and the rubber roller 5 on the slide rail 6 and setting and debugging the predetermined positions of the two, when the roll is automatically changed by the rotation of the fixed frame 3, the cutting of the foil electrode by the cutter 4 and the pressing action of the rubber roller 5 on the foil electrode on the empty foil roll can be coordinated with zero delay, thereby ensuring the success rate of automatic roll changing. For example, the cutter bar 4 and rubber roller 5 can have multiple preset positions corresponding to corresponding operation buttons. For example, when the operator presses the "roll change preparation" button, the cutter bar 4 and rubber roller 5 reach positions a1 and b1, respectively; when the operator presses the "roll change completion" button, the cutter bar 4 and rubber roller 5 reach positions a2 and b2, respectively. The specific electric, pneumatic, or hydraulic drive structures can be referenced in the prior art and will not be repeated here.

[0035] In summary, if Figure 1 As shown, Figure 1 (a) is a schematic diagram of the winding turret and the structure of this embodiment before reel change. At this time, the reel is in the outside reeling mode. The empty foil roll 2 is attached with double-sided tape on the inside of the turret 8 and is on standby. In the fixed frame 3, the cutter 4 and rubber roller 5 are placed on the two side rails 6 respectively. Figure 1 (b) is a schematic diagram showing the changes in the device after the operator clicks the "roll change preparation" button, where the inner empty foil roll 2 begins to rotate synchronously with the line speed of the tape feeder, and the cutter 4 and rubber roller 5 move to the predetermined position on the fixed frame 3; Figure 1 (c) is a schematic diagram of the device changes after the operator clicks the "Change Roll" button. At this time, the turret 8 begins to rotate according to the set angle and speed and stops after reaching the set position. According to the pre-set settings, the "cutting" of the foil and the "pressing" of the foil on the inner empty foil roll 2 are synchronized and automatically changed, avoiding abnormal automatic roll changing problems such as time difference in automatic roll changing and improper debugging and coordination in normal mode; Figure 1 (d) shows that after the successful automatic reel change, the outer full foil reel 1 continues to rotate to collect the remaining length of foil pole pieces, and the inner empty foil reel 2 begins to collect the next foil pole pieces. At this time, the fixing frame 3 still maintains the corresponding positions of "cutting" and "pressing" during the reel change; Figure 1 (e) shows that after the operator clicks the "roll change completed" button, the fixed frame 3 moves along the opposite motion trajectory of "roll change", returns to the initial position and stops, waiting for the next automatic roll change.

[0036] It should be noted that the fixed frame 3 is electrically driven or pneumatically driven to ensure the stability of its rotation and to ensure that it can be fixed or fixed in an emergency stop at any position; due to the design of the position and structure, the fixed frame 3 and the winding turret 8 do not affect each other in the dynamic process of being stationary and rotating with each other; the position of the fixed frame 3 during rotation can be pre-set by the controller, including: the standby position when no roll is changed, the fixed position when the cutting and pressing effects are achieved when the roll is changed, and the return position after the roll change is completed; the rotation angular velocity of the fixed frame 3 can also be pre-set by the controller, including: the rotation angular velocity from the standby position to the corresponding position of "roll change preparation", and the rotation angular velocity from "roll change preparation" to the corresponding position of "roll change", so as to ensure the continuity and success rate of the automatic roll changing action.

[0037] The clockwise / counterclockwise rotation of the fixed frame 3 along a central axis parallel to the empty foil roll 2 can realize the preset functions of multiple positions and correspond to the operation buttons, that is: when the operator presses the "change roll" button, the fixed frame 3 rotates according to the preset direction and rotation angle, realizes automatic roll change, and then stops and waits; when the operator presses the "end roll change" button, the fixed frame runs in the reverse direction, returns to the original position, and stops and waits.

[0038] In summary, when performing automatic roll changing, the automatic roll changing device in this embodiment changes the previous form of "turret + cutting roller combination device" and adopts the form of "turret + fixed frame (knife row + rubber roller)", which avoids the problems of difficult adjustment and easy roll changing failure in the original automatic roll changing mode, improves the roll changing success rate, and ensures the continuous production of the coating process.

[0039] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0043] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. An automatic roll changing device, comprising a turret, wherein a full foil roll and an empty foil roll are respectively mounted at opposite corners of the turret, wherein: The invention also includes a fixing frame installed near the empty foil roll, the fixing frame rotates along a central axis parallel to the empty foil roll, and both sides of the fixing frame are slidably installed with a row of cutters for cutting the foil when changing the roll and a pressing roller for pressing the foil against the empty foil roll with double-sided tape. When the fixing frame rotates to a specified position and the row of cutters and the pressing roller slide to the specified position, the row of cutters cuts the foil and the pressing roller presses and bonds it.

2. The automatic roll changing device according to claim 1, characterized in that: It also includes a driving assembly, which includes a first driving mechanism for driving the turret to rotate, a second driving mechanism for driving the fixed frame to rotate, and a third driving mechanism for driving the cutter row and the pressing roller to slide along the fixed frame. Both sides of the fixed frame are provided with slide rails extending along the length direction thereof, and a slider is slidably connected to the slide rail, and the cutter row and the pressing roller are connected to the outside of the slider.

3. The automatic roll changing device according to claim 2, characterized in that: The first drive mechanism, the second drive mechanism and the third drive mechanism are configured to be electrically driven, pneumatically driven or hydraulically driven.

4. The automatic roll changing device according to claim 2, characterized in that: The outer side of the slider is provided with a clamping groove, and the two end portions of the row of cutters are respectively clamped in the clamping grooves on both sides thereof; the two end portions of the pressing roller are respectively clamped in the clamping grooves on both sides thereof.

5. The automatic roll changing device according to claim 1, characterized in that: The turret is configured as a diamond structure, and the turret rotates along the center of the diamond structure.

6. The automatic roll changing device according to claim 2, characterized in that: The device further comprises a controller, wherein the controller is communicatively connected to the driving component, and the controller is connected to an operation panel, and the operation panel is provided with operation buttons.

7. The automatic roll changing device according to claim 6, characterized in that: The operation buttons include a "roll change preparation" button, a "roll change" button, and a "roll change completion" button.

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