Die head device, coating apparatus, and coating method

Abstract

The application provides a die device, a coating equipment and a coating method, relates to the technical field of coating, and the die device comprises a frame body, a first support, a second support and a first die. The first support is slidably connected to the frame body along a first direction to displace along the width direction of a material belt. The second support is slidably connected to the first support along a second direction to displace along the thickness direction of the material belt, and the second support is rotatably connected to the first support. The first die is installed on the second support. The die device can reduce the difficulty of maintenance and installation of the first die with the upward discharge slit.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coating, in particular to a die device, a coating equipment and a coating method. BACKGROUND

[0002] Coating is a method of coating paste polymer, molten polymer or polymer melt on paper, cloth, plastic film to obtain composite material (film), for example, in the production process of battery electrode sheet, it is necessary to coat slurry on the current collector, and then send it into the oven for drying, and finally wind up the dried electrode sheet, the coating and drying device used in traditional electrode sheet production is mostly single-sided coating, that is, after completing the coating of one side, it is necessary to dry and then coat the other side, and finally dry, which increases the number of ovens, improves the cost, and reduces the production efficiency, in order to solve the above problems, a double-layer coating equipment can be used to coat both sides of the electrode sheet, and the electrode sheet coated on both sides is dried at the same time.

[0003] In the prior art, since the discharge slot of one of the dies in the double-layer coating equipment needs to face upward, compared with the die with the discharge slot facing horizontally, the die with the discharge slot facing upward is difficult to install and maintain, which can be manifested as follows: the die with the discharge slot facing horizontally can be arranged on one side of the material belt, and the operation space is relatively large, the upper part of the die with the discharge slot facing upward is occupied by the coated material belt, part of the operation space is occupied by the material belt, which limits the activities of the workers, or in the case that the discharge slot of the die faces horizontally, after the cover plate part of the die is opened along the slot, the opening of the material cavity of the die faces upward, and the residual slurry in the material cavity of the die is not easy to drop and is easy to clean, while in the case that the discharge slot of the die faces upward, after the cover plate part of the die is opened, the opening of the material cavity of the die faces sideways, and the residual slurry in the material cavity of the die will flow from the opening of the material cavity, or in the case that the discharge slot of the die faces horizontally, a large number of components are installed on the upper surface of the cover plate above the die, and these components are installed on the die from top to bottom, while in the case that the discharge slot of the die faces upward, these components are installed on the cover plate of the die from the side in the horizontal direction, and it is not easy to install the components by continuously lifting them during the installation process. SUMMARY

[0004] The present application provides a die device, a coating equipment and a coating method to solve at least one of the above technical problems.

[0005] The embodiments of the present application can be implemented as follows:

[0006] The embodiments of the present application provide a die device, which comprises:

[0007] a frame body;

[0008] a first support slidably connected to the frame in a first direction for displacement along a width direction of the material strip;

[0009] a second support slidably connected to the first support in a second direction for displacement along a thickness direction of the material strip, and rotatably connected to the first support; and

[0010] a first die head mounted on the second support.

[0011] Optionally, the second direction is perpendicular to the first direction, and specifically, the first direction is horizontal and the second direction is vertical.

[0012] Optionally, the die head device further comprises a first lifting driving member mounted on the first support and drivingly connected to the second support.

[0013] The first lifting driving member is configured to drive the second support to move towards or away from the frame along the second direction.

[0014] Optionally, the die head device further comprises a sliding plate body slidably connected to the first support along the second direction, and the second support is rotatably connected to the sliding plate body, and the first lifting driving member is configured to drive the sliding plate body to move towards or away from the first support.

[0015] Optionally, the die head device further comprises a limiting block, and the sliding plate body is provided with a sliding groove, and the limiting block is slidably arranged in the sliding groove along the first direction.

[0016] When the limiting block is slid to a preset position, the rotation of the second support is limited.

[0017] Optionally, the die head device further comprises a second lifting driving member, and the second lifting driving member comprises a horizontal driving member and a matching block, and the horizontal driving member is connected to the matching block, and the horizontal driving member is mounted on the first support and configured to drive the matching block to move along the first direction.

[0018] The sliding plate body is provided with a wedge block, and the wedge block is slidably connected to the matching block, and when the horizontal driving member drives the matching block to move along the first direction, the matching block and the wedge block slide relative to each other to make the sliding plate body slide relative to the first support along the second direction.

[0019] Optionally, the wedge block has a wedge block plane and a sliding inclined surface, and the wedge block plane and the sliding inclined surface are located on opposite sides of the wedge block, and the matching block is provided with an inclined surface slidably matched with the sliding inclined surface.

[0020] Optionally, the die device further comprises a limiting plate, the limiting plate is installed on the frame body, and the limiting plate abuts against the first support when the first support slides to the preset sliding position in the first direction.

[0021] Optionally, the limiting plate is provided with a protrusion, the first support is provided with a groove, and the protrusion and the groove are matched when the first support slides to the preset sliding position in the first direction.

[0022] Embodiments of the present application also provide a coating device, comprising a coating device body, a second die, and the above-mentioned die device.

[0023] The second die is installed on the coating device body, and the die device is located on one side of the coating device body, wherein the second die is used for coating a first surface of a material belt, the first die is used for coating a second surface of the material belt, and the first surface and the second surface are located on opposite sides of the material belt.

[0024] Optionally, the coating device further comprises an offset detection unit, the offset detection unit is installed on the coating device body, and is used for detecting offset of the material belt in the first direction.

[0025] Embodiments of the present application also provide a coating method, using the above-mentioned coating device, the coating method comprising:

[0026] controlling the second die to coat the first surface of the material belt, and controlling the first die to coat the second surface of the material belt, wherein the material belt passes through the second die and the first die in sequence;

[0027] obtaining an offset amount of the material belt in the first direction after the first surface coating is completed;

[0028] controlling the first support to move in the first direction based on the offset amount of the material belt in the first direction.

[0029] Optionally, the coating method further comprises: obtaining a bending state of the material belt at the first die, wherein the material belt is located above the first die, and the material belt is located above the first die in a state in which the first die coats the material belt, and the material belt is located above the first die in a state in which the first die coats the material belt.

[0030] controlling the second support to move in the second direction so that the first die is close to or away from the second surface of the material belt;

[0031] Specifically, in a case where the material belt of the first die protrudes away from the first die, the second support is controlled to move in the second direction so that the first die is away from the second surface of the material belt.

[0032] In a case where the material strip of the first die is protruding away from the first die, the second support is controlled to move along the second direction to make the first die away from the second surface of the material strip.

[0033] Embodiments of the present application also provide a coating method using the coating device described above, the coating method comprising:

[0034] Obtaining a bending state of the material strip at the first die, wherein the material strip is above the first die and the discharge gap of the first die is upward in a state where the first die coats the material strip;

[0035] In a case where the material strip of the first die is protruding away from the first die, the second support is controlled to move along the second direction to make the first die away from the second surface of the material strip.

[0036] In a case where the material strip of the first die is protruding away from the first die, the second support is controlled to move along the second direction to make the first die away from the second surface of the material strip.

[0037] The die device, the coating device and the coating method of embodiments of the present application have the following advantages, for example:

[0038] Embodiments of the present application provide a die device, which comprises a frame, a first support, a second support and a first die, the first support is slidably connected to the frame along a first direction to displace along a width direction of a material strip, the second support is slidably connected to the first support along a second direction, and the second support is rotatably connected to the first support to displace along a thickness direction of the material strip, and the first die is installed on the second support, the die device can avoid the limitation of activity space caused by the material strip when the first die is maintained and installed by making the first die away from the material strip along the thickness direction of the material strip and extracting the die from the space below the material strip along the first direction, can reduce the difficulty of maintenance and installation of the first die with the discharge gap upward, and can change the first die from the state with the discharge gap upward to the state with the discharge gap horizontal by rotating the second support, thereby avoiding the difficulty of maintenance and installation caused by the die with the discharge gap upward.

[0039] The embodiment of the present application also provides a coating device, which comprises a coating device body, a second die head and the die head device, the second die head is installed on the coating device body, and the die head device is located on one side of the coating device body, wherein the second die head is used for coating a first surface of the material belt, the first die head is used for coating a second surface of the material belt, and the first surface and the second surface are located on opposite sides of the material belt, so that the maintenance and installation difficulty of the first die head with the upward material belt outlet gap is reduced.

[0040] The embodiment of the present application also provides a coating method, which adopts the coating device, and the coating method comprises the following steps: controlling the second die head to coat the first surface of the material belt, and controlling the first die head to coat the second surface of the material belt, wherein the material belt passes through the second die head and the first die head in sequence, the offset amount of the material belt in the first direction is obtained after the coating of the first surface is completed, and the first support is controlled to move in the first direction based on the offset amount of the material belt in the first direction, so that the first die head can normally coat the material belt even if the material belt is not corrected. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0042] Figure 1 It is a schematic diagram of the coating device provided in the embodiment of the present application;

[0043] Figure 2 It is a schematic diagram of the die head device provided in the embodiment of the present application from a first perspective;

[0044] Figure 3 It is a schematic diagram of the die head device provided in the embodiment of the present application from a second perspective;

[0045] Figure 4 It is a schematic diagram of the second lifting driving member provided in the embodiment of the present application;

[0046] Figure 5 It is a coating operation schematic diagram of the coating device provided in the embodiment of the present application.

[0047] Icon: 1000 - die device; 100 - frame body; 200 - first support; 300 - second support; 400 - first die; 500 - first lifting driver; 600 - sliding plate body; 601 - sliding groove; 700 - limiting block; 800 - second lifting driver; 810 - horizontal driver; 820 - matching block; 900 - wedge block; 910 - wedge block plane; 920 - sliding inclined surface; 10 - limiting plate; 20 - protrusion; 30 - frame body sliding rail; 40 - material belt; 41 - first surface; 42 - second surface; 50 - rotating driver; 60 - discharging clamping gap; 2000 - coating equipment; 2100 - coating equipment body; 2200 - second die; 2300 - offset detection unit. DETAILED DESCRIPTION

[0048] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0050] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0051] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0052] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0053] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0054] Coating is a method of coating paste polymer, molten polymer or polymer melt on paper, cloth, plastic film to obtain composite material (film), for example, in the production process of battery electrode sheet, it is required to coat slurry on the current collector, then send it into the oven for drying, and finally roll up the dried electrode sheet.

[0055] The conventional coating and drying device for electrode sheet production is mostly single-sided coating, that is, after completing the coating of one side, drying is required before coating the other side, and finally drying is required again, which increases the number of ovens, increases the cost, and reduces the production efficiency.

[0056] To solve the above problems, a double-layer coating device can be used to coat both sides of the electrode sheet and dry the coated electrode sheet at the same time.

[0057] However, since the discharge slot of one die in some double-layer coating devices needs to be upward, compared with the die with the discharge slot facing horizontally, the die with the upward discharge slot is difficult to install and maintain, which can be manifested as follows: the die with the discharge slot facing horizontally can be arranged on one side of the material belt, and the operation space is relatively large; the upward discharge slot of the die is above the coated material belt, and part of the operation space is occupied by the material belt, which limits the movement of the workers; or, when the discharge slot of the die faces horizontally, the opening of the material cavity of the die faces upward after the cover plate of the die is opened, and the residual slurry in the material cavity of the die is not easy to drop and is easy to clean; when the discharge slot of the die faces upward, the opening of the material cavity of the die faces sideways after the cover plate of the die is opened, and the residual slurry in the material cavity of the die flows from the opening of the material cavity; or, when the discharge slot of the die faces horizontally, a large number of components are arranged on the upper surface of the cover plate of the die, and these components are arranged on the die from top to bottom; when the discharge slot of the die faces upward, these components are arranged on the cover plate of the die from the side in the horizontal direction, and the components need to be continuously lifted during the installation process, which is not easy to install.

[0058] Therefore, with reference to Figures 1-5 The die device 1000, the coating device 2000 and the coating method provided in the embodiment can solve the problem, which will be described in detail as follows.

[0059] The embodiment of the present application provides a coating device 2000, which is a double-layer coating device, and comprises a coating device body 2100, a second die 2200 and a die device 1000.

[0060] Specifically, the second die 2200 is used for coating the first surface 41 of the material belt 40, and the first die 400 is capable of coating the second surface 42 of the material belt 40, the first surface 41 and the second surface 42 are located on opposite sides of the material belt 40, and the first surface 41 and the second surface 42 can be understood as the upper surface and the lower surface of the material belt 40 respectively.

[0061] In the embodiment, the material belt 40 is a current collector, and of course, in other embodiments, the material belt 40 can also be a plastic film or paper.

[0062] It should be noted that during the operation of the coating device 2000, the second die 2200 first coats the first surface 41, and then the first die 400 coats the second surface 42 of the material belt 40 which has been coated with the first surface 41.

[0063] The die device 1000 includes a frame body 100, a first support 200, a second support 300, and a first die 400, the first support 200 is slidably connected to the frame body 100 along a first direction to displace along the width direction of the material belt, and the second support 300 is slidably connected to the first support 200 along a second direction to displace along the thickness direction of the material belt.

[0064] Among them, the second support 300 is rotatably connected to the first support 200, and the first die 400 is installed on the second support 300, in the embodiment, the second direction is perpendicular to the first direction, the second direction here can be understood as the vertical direction, that is, the up-down direction, and the first direction can be understood as the horizontal direction.

[0065] When it is necessary to install and maintain the first die 400, the second support 300 can be first slid relative to the first support 200 to move the first die 400 downward and away from the second surface 42 of the material belt 40, and then the first support 200 is slid relative to the frame body 100 along the first direction to move away from the material belt 40 in the horizontal direction.

[0066] Then rotate the second support 300 by ninety degrees, and the discharge gap 60 of the first die 400 is also directed in the horizontal direction, that is, the cover plate of the first die 400 is located above the material cavity, at this time, the installation and maintenance can be carried out again, which can avoid the parts in the first die 400 from falling and reduce the difficulty of installation and maintenance.

[0067] Specifically, in order to facilitate the sliding of the first support 200, the frame body 100 is provided with a frame sliding rail 30, and the first support 200 is installed on the frame sliding rail 30, and at the same time, the first support 200 can be driven by a motor to slide along the first direction on the frame sliding rail 30.

[0068] It should be noted that in order to improve the precision of the coating of the first die head 400, the coating device 2000 further comprises an offset detection unit 2300, which is installed on the coating device body 2100 and is used to detect the offset of the material belt 40 in the first direction. The offset detection unit 2300 can be an image sensor or a photoelectric sensor.

[0069] When the offset detection unit 2300 detects that the material belt 40 has an offset, it can feed offset data recording the offset amount to the motor used to drive the first support 200 to slide, so that the first support 200 slides relative to the frame body slide rail 30 in the offset direction according to the offset amount. In this way, even if the material belt 40 is not corrected, the first die head 400 can still perform normal coating on the material belt 40.

[0070] In the present embodiment, the die head device 1000 further comprises a first lifting driving member 500 and a sliding plate body 600. The first lifting driving member 500 is installed on the first support 200 and is drivingly connected with the second support 300. The first lifting driving member 500 is used to drive the second support 300 to move towards or away from the frame body 100 in the second direction.

[0071] Specifically, the sliding plate body 600 is slidably connected to the first support 200 in the second direction, and the second support 300 is rotatably connected to the sliding plate body 600. The first lifting driving member 500 is used to drive the sliding plate body 600 to move towards or away from the first support 200.

[0072] Specifically, the first lifting driving member 500 is a pneumatic cylinder, which can drive the sliding plate body 600 to move in the second direction, i.e., to drive the first die head 400 to move greatly in the up-down direction.

[0073] In order to realize more precise movement of the first die head 400 in the second direction, i.e., to control the distance between the material discharge gap 60 of the first die head 400 and the second surface 42 of the material belt 40, the die head device 1000 further comprises two second lifting driving members 800, which are respectively installed on both sides of the first support 200, which is a U-shaped plate body.

[0074] The second lifting driving member 800 comprises a horizontal driving member 810 and a matching block 820, the horizontal driving member 810 is installed on the first support 200, the horizontal driving member 810 and the matching block 820 are connected, the horizontal driving member 810 is used for driving the matching block 820 to move in the first direction, the horizontal driving member 810 can be a cylinder, a wedge block 900 is installed on the sliding plate body 600, the wedge block 900 and the matching block 820 are slidably connected, and the horizontal driving member 810 drives the matching block 820 to move in the first direction, the matching block 820 and the wedge block 900 slide relative to each other, so that the sliding plate body 600 slides relative to the first support 200 in the second direction.

[0075] Specifically, the wedge block 900 has a wedge block plane 910 and a sliding inclined surface 920, the wedge block plane 910 and the sliding inclined surface 920 are located on opposite sides of the wedge block 900, and the matching block 820 is provided with an inclined surface which is slidably connected with the sliding inclined surface 920.

[0076] That is, the wedge block plane 910 and the sliding inclined surface 920 are located on the upper and lower sides of the wedge block 900, the matching block 820 and the sliding inclined surface 920 are slidably connected, so as to realize the fine adjustment of the first mold head 400 in the second direction, that is, the displacement of the first mold head 400 in the up-down direction is more accurate, and it should be noted that when the first mold head 400 needs to be fine adjusted upward in the second direction, the first lifting driving member 500 also needs to push the sliding plate body 600 upward.

[0077] In addition, in the embodiment, the number of the sliding plate bodies 600 is two, and the two sliding plate bodies 600 are slidably connected on the two sides of the first support 200, specifically, the sliding plate bodies 600 can be connected with the first support 200 through a slide rail, one of the sliding plate bodies 600 is provided with a rotating driving member 50, the rotating driving member 50 is a driving motor, and the rotating driving member 50 is connected with the second support 300, so as to drive the second support 300 to rotate.

[0078] In the process of installing and maintaining the first mold head 400, in order to avoid the rotation of the first support 200 and affect the installation and maintenance, the mold head device 1000 further comprises a limiting block 700, the limiting block 700 is a cuboid structure, the sliding plate body 600 is provided with a sliding groove 601, the sliding groove 601 is matched with the limiting block 700, and the limiting block 700 is slidably arranged in the sliding groove 601 in the first direction, wherein the length of the limiting block 700 in the first direction is greater than the length of the sliding plate body 600 in the first direction, so that the limiting block 700 can extend out of the sliding groove 601 and be close to the side surface of the second support 300.

[0079] It should be noted that the second support 300 is a rectangular plate structure, the number of limiting blocks 700 is two, and the number of sliding grooves 601 is also two. The two limiting blocks 700 are located on the two sides of the second support, and the two limiting blocks 700 jointly limit the rotation of the second support 300 when sliding to the preset position. The preset position can be understood as the direction of the limiting block 700 moving close to the rotating drive 50 until the end of the limiting block 700 is located on the side of the second support 300, so as to be able to limit the second support 300.

[0080] In order to facilitate the sliding of the limiting block 700, the limiting block 700 can be driven along the first direction by a cylinder (not shown in the figure), that is, the cylinder and the limiting block 700 are connected to control the limiting block 700 to move close to or away from the rotating drive 50. When it is necessary to rotate the second support 300 to install and maintain the first die head 400, the cylinder can drive the limiting block 700 to move away from the rotating drive 50 until the end of the limiting block 700 close to the rotating drive 50 is retracted into the sliding groove 601.

[0081] In addition, the coating device 2000 also includes an alarm system (not shown in the figure), which includes an alarm and a position detection sensor. The position detection sensor and the alarm are electrically connected. The position detection sensor can be installed on the sliding plate body 600 to detect the position of the limiting block 700. The position detection sensor can be an optical sensor or an image sensor. The alarm can be installed on the frame body 100 or the coating device body 2100. When the position detection sensor detects that the limiting block 700 does not slide to the preset position, the position detection sensor can feed back data to the alarm, and the alarm alarms to remind the operator.

[0082] In order to ensure that the first die head 400 is located below the material belt 40 and accurately performs the coating operation, the die head device 1000 further includes a limiting plate 10. The limiting plate 10 is fixedly installed on one side of the frame body 100. Specifically, the limiting plate 10 is installed on one end of the frame slide rail 30. When the first support 200 slides to the preset sliding position along the first direction, the limiting plate 10 abuts against the first support 200. The preset sliding position can be understood as that the first die head 400 is located at the coating station.

[0083] Among them, the side of the limiting plate 10 close to the first support 200 is provided with a protrusion 20, and the side of the first support 200 close to the limiting plate 10 is provided with a groove. When the first support 200 slides to the preset sliding position along the first direction, the protrusion 20 and the groove cooperate to limit the first support 200.

[0084] The embodiment of the application also provides a coating method using the coating device 2000 described above. The coating method comprises the following steps:

[0085] The second die 2200 controls the coating of the first surface 41 of the material belt 40, and the first die 400 controls the coating of the second surface 42 of the material belt 40, wherein the material belt 40 sequentially passes through the second die 2200 and the first die 400.

[0086] Specifically, during the operation of the coating device 2000, the second die 2200 first coats the first surface 41, and then the first die 400 coats the second surface 42 of the material belt 40 which has completed the coating of the first surface 41.

[0087] At this time, the first die 400 is in the coating station, and the discharge gap 60 of the first die 400 is upward, and the discharge gap 60 of the second die 2200 is in the horizontal direction, that is, the discharge gap 60 of the second die 2200 is leftward.

[0088] The offset amount of the material belt 40 which has completed the coating of the first surface 41 in the first direction is obtained, and the first support 200 is controlled to move in the first direction based on the offset amount of the material belt 40 in the first direction.

[0089] Specifically, during the coating operation of the coating device 2000, the offset detection unit 2300 can obtain the offset amount of the material belt 40 which has completed the coating of the first surface 41 in the first direction, and control the first support 200 to move in the first direction according to the offset amount.

[0090] It is easy to understand that when the offset detection unit 2300 detects that the material belt 40 is offset, the offset data recording the offset amount can be fed back to the motor for driving the first support 200 to slide, so that the first support 200 slides relative to the frame slide rail 30 in the offset direction according to the offset amount. In this way, even if the material belt 40 is not corrected, the first die 400 can also realize normal coating of the material belt 40.

[0091] In addition, during the coating operation of the coating device 2000, the bending state of the material belt 40 located at the first die 400 can also be obtained, and the second support 300 is controlled to move in the second direction to make the first die 400 close to or away from the second surface 42 of the material belt 40 in the state of coating the material belt 40 by the first die 400.

[0092] Specifically, the bending state here can be understood as that the material belt 40 above the first die 400 is convex upward or concave downward.

[0093] It should be noted that since the first surface 41 of the material belt 40 is coated first, the fluid on the first surface 41 will press down the material belt 40, causing the material belt 40 to be concave, which will cause the material belt 40 to shake when the first die 400 coats the second surface 42, affecting the coating quality.

[0094] Therefore, in order to overcome this problem, the fluid from the discharge slot 60 of the first die 400 needs to be controlled to be equal to the gravity of the fluid on the first surface 41 of the ribbon 40 above the first die 400, so as to maintain the ribbon 40 above the first die 400 in a horizontal state, i.e., the ribbon 40 above the first die 400 is neither convex nor concave, and the problem of the ribbon 40 shaking is avoided.

[0095] Here, a bending state sensor (not shown in the figure) can be installed at the first die 400, for example, the bending state sensor is installed on the frame 100, and the bending state sensor is used to detect the bending state of the ribbon 40 above the first die 400.

[0096] Then, the bending state sensor feeds back data to the horizontal driving member 810, and fine adjustment of the sliding plate body 600 in the second direction is performed.

[0097] Specifically, the first die 400 is driven to fine adjust in the up-down direction, so as to change the pressure on the ribbon 40 above the first die 400.

[0098] In the case that the ribbon 40 of the first die 400 is convex in the direction away from the first die 400, the second support 300 is controlled to move in the second direction, so as to move the first die 400 away from the second surface 42 of the ribbon 40; in the case that the ribbon 40 of the first die 400 is convex in the direction close to the first die 400, the second support 300 is controlled to move in the second direction, so as to move the first die 400 close to the second surface 42 of the ribbon 40.

[0099] It is easy to understand that the farther the first die 400 is away from the second surface 42 of the ribbon 40, the smaller the pressure on the ribbon 40 above the first die 400 is, and the closer the first die 400 is to the second surface 42 of the ribbon 40, the greater the pressure on the ribbon 40 above the first die 400 is, so that the feedback data obtained by the bending state sensor can be used to control the fluid from the discharge slot 60 of the first die 400 to be equal to the gravity of the fluid on the first surface 41 of the ribbon 40 above the first die 400, so as to maintain the ribbon 40 above the first die 400 in a horizontal state.

[0100] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A die head device, characterized in that, include: Frame (100); a first support (200), the first support (200) being slidably connected to the frame (100) along a first direction so as to be displaced along the width direction of the material strip; a second support (300), the second support (300) being slidably connected to the first support (200) along a second direction so as to be displaced in a thickness direction of the material strip, and the second support (300) being rotatably connected to the first support (200); and A first die head (400) is installed on the second support (300), and the second support (300) is rotated ninety degrees so that the discharge gap (60) of the first die head (400) faces upward or horizontally.

2. The die head device according to claim 1, characterized in that The die head device further comprises a first lifting drive member (500), the first lifting drive member (500) being mounted on the first support (200), and the first lifting drive member (500) being drivingly connected to the second support (300); The first lifting drive member (500) is used to drive the second support (300) to move closer to or away from the frame (100) along a second direction.

3. The die head device according to claim 2, characterized in that The die head device also includes a sliding plate body (600), the sliding plate body (600) is slidably connected to the first support (200) along a second direction, the second support (300) is rotatably connected to the sliding plate body (600), and the first lifting drive member (500) is used to drive the sliding plate body (600) to approach or move away from the first support (200).

4. The die head device according to claim 3, characterized in that The die head device further comprises a limit block (700), a slide groove (601) is provided on the sliding plate body (600), and the limit block (700) is slidably arranged in the slide groove (601) along a first direction; When the limiting block (700) slides to a preset position, it limits the rotation of the second support (300).

5. The die head device according to claim 3, characterized in that The die head device further comprises a second lifting drive member (800), the second lifting drive member (800) comprising a horizontal drive member (810) and a matching block (820), the horizontal drive member (810) being mounted on the first support (200), the horizontal drive member (810) being connected to the matching block (820), and the horizontal drive member (810) being used to drive the matching block (820) to move along a first direction; A wedge block (900) is installed on the sliding plate body (600), and the wedge block (900) is slidably connected to the matching block (820). When the horizontal driving member (810) drives the matching block (820) to move along the first direction, the matching block (820) and the wedge block (900) slide relative to each other, so that the sliding plate body (600) slides along the second direction relative to the first support (200).

6. The die head device according to claim 5, characterized in that The wedge block (900) has a wedge block plane (910) and a sliding inclined surface (920), wherein the wedge block plane (910) and the sliding inclined surface (920) are located on opposite sides of the wedge block (900), and the matching block (820) is provided with an inclined surface that slides with the sliding inclined surface (920).

7. The die head device according to claim 1, characterized in that The die head device further comprises a limiting plate (10), wherein the limiting plate (10) is mounted on the frame (100), and when the first support (200) slides to a preset sliding position along the first direction, the limiting plate (10) abuts against the first support (200).

8. The die head device according to claim 7, characterized in that The limiting plate (10) is provided with a protrusion (20), and the first support (200) is provided with a groove, and when the first support (200) slides along the first direction to a preset sliding position, the protrusion (20) and the groove cooperate.

9. A coating device, characterized in that: It comprises a coating device body (2100), a second die head (2200), and the die head device according to any one of claims 1 to 8; The second die head (2200) is installed on the coating equipment body (2100), and the die head device is located on one side of the coating equipment body (2100), wherein the second die head (2200) is used to coat the first surface (41) of the material strip (40), and the first die head (400) is used to coat the second surface (42) of the material strip (40), and the first surface (41) and the second surface (42) are located on opposite sides of the material strip (40).

10. The coating device according to claim 9, characterized in that The coating device further comprises a deviation detection unit (2300), wherein the deviation detection unit (2300) is mounted on the coating device body (2100) and is used to detect the deviation of the material strip (40) along the first direction.

11. A coating method, characterized in that: Using the coating device according to claim 9 or 10, the coating method comprises: controlling the second die head (2200) to coat the first surface (41) of the material strip (40), and controlling the first die head (400) to coat the second surface (42) of the material strip (40), wherein the material strip (40) passes through the second die head (2200) and the first die head (400) in sequence; Obtaining the offset of the material strip (40) along the first direction after the coating of the first surface (41) is completed; Based on the offset of the material strip (40) along the first direction, the first support (200) is controlled to move along the first direction.

12. The coating method according to claim 11, characterized in that The coating method further comprises: Obtaining a bent state of the material strip (40) located at the first die head (400), wherein the material strip (40) is located above the first die head (400) when the first die head (400) is coating the material strip (40), and the discharge slit (60) of the first die head (400) faces upward; When the material strip (40) of the first die head (400) protrudes in a direction away from the first die head, controlling the second support (300) to move along a second direction so that the first die head (400) is away from the second surface (42) of the material strip (40); When the material strip (40) of the first die head (400) protrudes in a direction close to the first die head, the second support (300) is controlled to move along the second direction so that the first die head (400) is close to the second surface (42) of the material strip (40).

13. A coating method, characterized in that: Using the coating device according to claim 9 or 10, the coating method comprises: Obtaining a bending state of the material strip (40) located at the first die head (400), wherein, when the first die head (400) is coating the material strip (40), the material strip (40) is located above the first die head (400), and the discharge slit (60) of the first die head (400) faces upward; When the material strip (40) of the first die head (400) protrudes in a direction away from the first die head, controlling the second support (300) to move along a second direction so that the first die head (400) is away from the second surface (42) of the material strip (40); When the material strip (40) of the first die head (400) protrudes in a direction close to the first die head, the second support (300) is controlled to move along the second direction so that the first die head (400) is close to the second surface (42) of the material strip (40).

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