Buffer device and coating die head

Abstract

The utility model relates to the technical field of coating machines and coating machine accessories, in particular to a buffer device and a coating die head, the buffer device is used for controlling die opening or die closing of a first die head and a second die head of the coating die head, the first die head is hinged to the second die head, and the buffer device comprises at least one group of telescopic components, the telescopic assembly is hinged to the first die head, the telescopic end of the telescopic assembly is hinged to the second die head, and when the second die head and the first die head are opened and closed, the telescopic end of the telescopic assembly is driven to stretch out and draw back in a matched mode to achieve the auxiliary opening and closing effect. The technical problem that when an existing coating die head is opened, an upper die head can be rapidly opened downwards under the action of the gravity of the upper die head, and certain potential safety hazards exist is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating machines and coating machine accessories, in particular to a buffer device and a coating die head. Background Art

[0002] Slot-slot coating, a precision wet coating technology, operates by squeezing a slurry through a slit in a coating die at a constant pressure and flow rate, transferring it to the substrate. Compared to other coating methods, it offers numerous advantages, including fast coating speed, high precision, and uniform wet-coating thickness. The closed coating system prevents contaminants from entering the coating process, resulting in high slurry utilization and stable slurry properties. It can simultaneously apply multiple layers and accommodate a wide range of slurry viscosities and solids contents.

[0003] Today's coating die heads generally consist of an upper die head, a lower die head and a gasket sandwiched therebetween. The upper die head and the lower die head are detachably connected by a clamping screw. The gasket is clamped between the upper die head and the lower die head to form a coating slit and a coating lip connected to the coating slit. The upper die head and the lower die head are hinged on the side away from the coating lip. When the coating die head is installed in the coating machine, there is a situation where the coating lip of the coating die head faces upward for coating. In this coating scenario, when the gasket needs to be replaced, the clamping screw needs to be removed and the upper die head needs to be turned over. When the clamping screw is loosened to open the mold, the upper die head will open rapidly downward under the action of its own gravity, posing a certain safety hazard. Utility Model Content

[0004] The utility model provides a buffer device and a coating die head, which solves the technical problem that the upper die head of the existing coating die head will open rapidly downward under the action of its own gravity when the die is opened, which poses certain safety hazards.

[0005] In view of this, the utility model provides a first aspect of a buffer device for controlling the opening or closing of a first die head and a second die head of a coating die head, wherein the first die head and the second die head are hingedly connected, and the buffer device comprises:

[0006] At least one set of telescopic components, wherein the telescopic components are hinged to the first die head, and the telescopic end of the telescopic components is hinged to the second die head, and is used to assist in opening and closing of the second die head and the first die head by driving the telescopic end of the telescopic components to cooperate with telescoping when the second die head and the first die head are opened and closed.

[0007] Optionally, the telescopic assembly includes a cylinder, which is hinged to the first die head, and the piston rod of the cylinder is hinged to the second die head; the inner cavity of the cylinder is connected to an air source component, and the air source component is used to provide an air source to drive the piston rod to move.

[0008] Optionally, the cylinder is arranged on a side of the coating die head away from its coating lip, and the telescopic assembly further includes a three-way valve and an exhaust member; the exhaust member is connected to the inner cavity of the cylinder through the three-way valve, and is used to adjust the opening of the inner cavity of the cylinder for exhaust;

[0009] The air source component is connected to the inner cavity of the cylinder through the three-way valve; wherein the three-way valve is used to control the inner cavity of the cylinder to be connected to the air source component, or to control the inner cavity of the cylinder to be connected to the exhaust component.

[0010] Optionally, the exhaust member is a throttle valve;

[0011] And / or, the exhaust end of the exhaust component is connected to a first muffler for silencing the exhaust when the exhaust component is exhausting.

[0012] Optionally, the piston rod is slidably connected to the inner cavity of the cylinder via a piston seal; the piston divides the inner cavity of the cylinder into a first cavity and a second cavity, the air source is connected to the first cavity; the second cavity is connected to the outside via a second muffler;

[0013] and / or, the air source is connected to the air cylinder via a pressure regulating valve;

[0014] And / or, the piston rod is hinged to the second die head through a cylinder joint; a threaded hole is provided on the cylinder joint, and an external thread is provided on the piston rod for adapting and connecting with the threaded hole; a locking nut is sleeved on the piston rod, and the locking nut is threadedly connected to the external thread for locking and limiting when the piston rod is connected to the cylinder joint.

[0015] Optionally, a hinge assembly is provided on the side of the coating die head facing away from its coating lip, and the first die head and the second die head are hingedly connected via the hinge assembly.

[0016] Optionally, the hinge assembly includes a first hinge block and a second hinge block, the first hinge block is connected to the first die head, and the second hinge block is connected to the second die head; the first hinge block and the second hinge block are hinged around the length direction of the coating die head; a limit block is provided on the side of the second hinge block facing away from the second die head, and the limit block is used to abut the first hinge block after the second hinge block rotates a preset angle when the mold is opened.

[0017] Optionally, the first die is provided with a locking assembly at at least one end in its length direction, and the locking assembly includes a locking portion; the locking portion has a first position adjusted to connect with the second die when the mold is closed, and a second position separated from the second die.

[0018] Optionally, the locking assembly further comprises a hinge portion; one end of the hinge portion is connected to the first die head via a screw, and the other end is connected to the locking portion;

[0019] The first die head is provided with a first arcuate groove on one end surface along the length direction thereof corresponding to the locking portion, and the second die head is provided with a second arcuate groove on one end surface along the length direction thereof corresponding to the locking portion;

[0020] When the first die head and the second die head are closed, the first arc groove is connected to the second arc groove to form a continuous third arc groove; the axis of the third arc groove is coaxial with the axis of the screw, and the locking portion is adapted to be slidably connected in the third arc groove.

[0021] The second aspect of the present invention provides a coating die head, comprising:

[0022] First die head;

[0023] a second die head, hinged to the first die head;

[0024] A buffer device adopts the buffer device as described in any one of the first aspects.

[0025] The technical solution of this utility model has the following advantages:

[0026] In the utility model, a telescopic component is provided on the coating die head, and the speed of the telescopic end of the telescopic component is controlled to provide external force to assist in flipping when the second die head is opened or closed. It plays a buffering role when the second die head is opened, and avoids the second die head from rapidly flipping and falling due to its own gravity during the flipping process, causing damage to the coating die head or injury to the operator, thereby improving safety; and provides power when the second die head is closed to assist in flipping, saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic structural diagram of the coating die head provided by the utility model at a first viewing angle;

[0029] Figure 2 This is a schematic diagram of the coating die head provided by the present invention when the die is closed at a second viewing angle;

[0030] Figure 3This is a schematic diagram of the coating die head provided by the present invention when the die is opened at a second viewing angle;

[0031] Figure 4 for Figure 3 A magnified view of point A in the figure;

[0032] Figure 5 A schematic structural diagram of the telescopic assembly provided by the utility model;

[0033] Figure 6 A schematic structural diagram of the hinge assembly provided by the present invention;

[0034] Figure 7 This is a structural schematic diagram of the cylinder joint provided by the utility model at a third viewing angle;

[0035] Figure 8 This is a structural schematic diagram of the cylinder joint provided by the present invention at a fourth viewing angle;

[0036] Figure 9 for Figure 8 Enlarged view of BB in the figure;

[0037] Figure 10 This is a structural schematic diagram of the cylinder joint provided by the utility model at the fifth viewing angle.

[0038] Description of reference numerals:

[0039] 1. First die head; 2. Second die head; 3. Cylinder; 4. Piston rod; 5. Air source component; 6. Three-way valve; 7. Exhaust component; 8. First muffler; 9. Second muffler; 10. Pressure regulating valve; 11. Cylinder joint; 12. Locking nut; 13. First hinge block; 14. Second hinge block; 15. Limit block; 16. Hinge part; 17. First arc groove; 18. Second arc groove; 19. Pull rod; 20. Base material. DETAILED DESCRIPTION

[0040] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0043] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0044] Example 1

[0045] See also Figures 1 to 10 This embodiment provides a buffer device, which is used to control the opening or closing of the first die head 1 and the second die head 2 of the coating die head. The first die head 1 is hinged to the second die head 2. The buffer device includes: at least one group of telescopic components, the telescopic components are hinged to the first die head 1, and the telescopic end of the telescopic components is hinged to the second die head 2, which is used to assist the opening and closing of the second die head 2 and the first die head 1 by driving the telescopic end of the telescopic components to cooperate with the telescopic expansion.

[0046] It should be noted that the first die head 1 and the second die head 2 are hinged on the side away from the coating lip of the coating die head, that is, the second die head 2 can rotate on the first die head 1 around its length direction.

[0047] In this embodiment, when the gasket between the first die head 1 and the second die head 2 needs to be replaced, the mold clamping screws on the first die head 1 and the second die head 2 can be removed, and the second die head 2 can be driven to flip over on the first die head 1. During the flipping of the second die head 2, external force can be provided to the second die head 2 to assist in flipping. The telescopic speed of the telescopic end of the telescopic component can be controlled to overcome the gravity of the second die head 2 to control the flipping speed of the second die head 2, thereby playing a buffering role and preventing the second die head 2 from rapidly flipping and falling due to its own gravity during the flipping process, causing damage to the coating die or injury to the operator, thereby improving safety. When it is necessary to flip the second die head 2 upward to clamp the die with the first die 1, the telescopic component drives its telescopic end to telescope and extend along with the flipping of the second die head 2, providing assistance when the first die head 1 and the second die 2 are clamped, saving manpower.

[0048] Example 2

[0049] As a further improvement to Example 1, Figures 1 to 5 As shown, the telescopic assembly includes a cylinder 3, which is hinged to the first die head 1, and the piston rod 4 of the cylinder 3 is hinged to the second die head 2; the inner cavity of the cylinder 3 is connected to the air source component 5, which is used to provide an air source to drive the piston rod 4 to move.

[0050] It should be noted that the piston rod 4 of the cylinder 3 performs linear reciprocating motion.

[0051] In this embodiment, a cylinder 3 is provided, and the piston rod 4 of the cylinder 3 is connected to the second die head 2. When the second die head 2 is flipped and closed, an air source is provided through the air source component 5 to drive the piston rod 4 to move, thereby providing an upward auxiliary force for the flipping of the second die head 2. When the second die head 2 is flipped and opened, a speed for driving the piston rod 4 to move in the reverse direction is set. During the flipping process of the second die head 2, the speed of the reverse movement of the piston rod 4 is controlled by the air source component 5, so that the piston rod 4 has a relatively upward supporting force on the second die head 2, which plays a buffering role, so that the second die head 2 flips slowly, and prevents the second die head 2 from falling rapidly due to its own gravity.

[0052] On the basis of the above embodiment, in a preferred embodiment, as Figures 1 to 3 as well as Figure 5 As shown, the cylinder 3 is arranged on the side of the coating die head away from its coating lip, and the telescopic assembly also includes a three-way valve 6 and an exhaust component 7; the exhaust component 7 is connected to the inner cavity of the cylinder 3 through the three-way valve 6, and is used to adjust the opening of the inner cavity of the cylinder 3 for exhaust; the air source component 5 is connected to the inner cavity of the cylinder 3 through the three-way valve 6; wherein, the three-way valve 6 is used to control the connection between the inner cavity of the cylinder 3 and the air source component 5, or to control the connection between the inner cavity of the cylinder 3 and the exhaust component 7.

[0053] In this embodiment, the cylinder 3 is arranged on the side of the coating die head away from its coating lip. When the second die head 2 is flipped upward for mold closing, the inner cavity of the cylinder 3 is controlled to be connected with the air source component 5 through the three-way valve 6, so that the air source component 5 provides an air source for the inner cavity of the cylinder 3 to drive the piston rod 4 to extend, thereby providing assistance for the second die head 2 to flip upward. When the second die head 2 is flipped downward for mold opening, the second die head 2 will compress the piston rod 4 to shorten it. The inner cavity of the cylinder 3 is controlled to be connected with the exhaust component 7 through the three-way valve 6, and the inner cavity of the cylinder 3 can be exhausted through the exhaust component 7. The exhaust opening of the inner cavity of the cylinder 3 is controlled by the exhaust component 7, so that the inner cavity of the cylinder 3 is exhausted at a predetermined speed, so that the piston rod 4 is slowly shortened at a predetermined speed, so that the second die head 2 slowly flips down, thereby improving safety.

[0054] Specifically, the three-way valve 6 can be a manual three-way valve 6 or an electrically controlled three-way valve 6 , and the selection can be made according to actual conditions.

[0055] On the basis of the above embodiment, in a preferred embodiment, as Figures 1 to 3 as well as Figure 5 As shown, the exhaust member 7 is a throttle valve.

[0056] In this embodiment, the exhaust member 7 is a throttle valve so as to control the opening degree of the exhaust to the inner cavity of the cylinder 3 .

[0057] On the basis of the above embodiment, in a preferred embodiment, as Figures 1 to 3 as well as Figure 5 As shown, the exhaust end of the exhaust member 7 is connected to a first muffler 8 for muffler when the exhaust member 7 is exhausting.

[0058] In this embodiment, the exhaust end of the exhaust member 7 is connected to the first muffler 8 to achieve a muffler effect, thereby reducing working noise and improving the comfort of the working environment.

[0059] On the basis of the above embodiment, in a preferred embodiment, as Figures 1 to 3 as well as Figure 5 As shown, the piston rod 4 is slidably connected to the inner cavity of the cylinder 3 through a piston seal; the piston divides the inner cavity of the cylinder 3 into a first cavity and a second cavity, and the air source 5 is connected to the first cavity; the second cavity is connected to the outside through a second muffler 9, which is used to muffle the air when the second cavity is inlet or outlet.

[0060] In this embodiment, the air source component 5 is connected to the first cavity so that the piston rod 4 can be driven to reciprocate on the cylinder 3 through the air source. At the same time, the second cavity is connected to the outside through the second muffler 9, and air is taken in or exhausted during the driving process of the piston rod 4. At the same time, noise is reduced through the second muffler 9, which reduces working noise and improves the comfort of the working environment.

[0061] On the basis of the above embodiment, in a preferred embodiment, as Figures 1 to 3 as well as Figure 5 As shown, the air source 5 is connected to the cylinder 3 through the pressure regulating valve 10.

[0062] In this embodiment, the air source 5 is connected to the cylinder 3 via the pressure regulating valve 10, which facilitates adjustment of the output pressure of the air source 5 and can be adaptively adjusted according to the weight of the second die head 2 to improve the scope of application.

[0063] On the basis of the above embodiment, in a preferred embodiment, as Figures 1 to 3 、 Figure 5 as well as Figures 7 to 10 As shown, the piston rod 4 is hinged to the second die head 2 through the cylinder joint 11; a threaded hole is provided on the cylinder joint 11, and an external thread is provided on the piston rod 4 for adapting and connecting with the threaded hole; a locking nut 12 is sleeved on the piston rod 4, and the locking nut 12 is threadedly connected to the external thread for locking and limiting when the piston rod 4 is connected to the cylinder joint 11.

[0064] In this embodiment, the external thread on the piston rod 4 is threadedly matched with the threaded hole on the cylinder joint 11 to facilitate installation and disassembly. At the same time, a locking nut 12 is provided on the piston rod 4. After the piston rod 4 is connected to the cylinder joint 11, the locking nut 12 is rotated to abut the cylinder joint 11 to prevent the cylinder joint 11 from loosening during the movement of the piston rod 4 and improve stability.

[0065] On the basis of the above embodiment, in a preferred embodiment, as Figures 1 to 3 as well as Figure 6 As shown, a hinge assembly is provided on the side of the coating die head away from its coating lip, and the first die head 1 and the second die head 2 are hingedly connected via the hinge assembly.

[0066] In this embodiment, the first die head 1 and the second die head 2 are hinged by a hinge assembly, which facilitates flipping and opening the mold to replace and maintain the gasket.

[0067] On the basis of the above embodiment, in a preferred embodiment, as Figures 1 to 4 as well as Figure 6 As shown, the hinge assembly includes a first hinge block 13 and a second hinge block 14, the first hinge block 13 is connected to the first die head 1, and the second hinge block 14 is connected to the second die head 2; the first hinge block 13 and the second hinge block 14 are hinged around the length direction of the coating die head; a limit block 15 is provided on the side of the second hinge block 14 facing away from the second die head 2, and the limit block 15 is used to abut the first hinge block 13 after the second hinge block 14 rotates a preset angle when the mold is opened.

[0068] In this embodiment, the first die head 1 is hinged to the second hinge block 14 on the second die head 2 through the first hinge block 13 to facilitate flipping, and a limit block 15 is provided on the second hinge block 14. When the second die head 2 drives the second hinge block 14 to flip at a preset angle on the first hinge block 13, the limit block 15 abuts against the first hinge block 13 to limit the flipping angle of the second die head 2, thereby avoiding the flipping angle of the second die head 2 being too large, thereby increasing the flipping stroke of the second die head 2 when the mold is closed.

[0069] Specifically, if Figures 1 to 3 As shown, a pull rod 19 is provided on the second hinge block 14 to facilitate flipping the second die head 2 through the pull rod 19 .

[0070] Specifically, each set of hinge components corresponds to a set of telescopic components, the telescopic components are hinged to the first hinge block 13, and the telescopic end of the telescopic components is hinged to the second hinge block 14. The telescopic components cooperate with the hinge components to improve the smoothness of the flipping process.

[0071] Specifically, the cylinder 3 is hinged to the first hinge block 13 through the fixed plate, and the piston rod 4 is hinged to the second hinge block 14 through the cylinder joint 11; the fixed plate is hinged to the first hinge block 13 through the first pin shaft, and the cylinder joint 11 is hinged to the second hinge block 14 through the second pin shaft, and shaft elastic retaining rings are respectively provided at both ends of the first pin shaft and the second pin shaft to improve stability during rotation.

[0072] Specifically, this embodiment does not limit the number of articulated assemblies. Preferably, the number of articulated assemblies provided in this embodiment is two, and two groups of telescopic assemblies are correspondingly provided. The inner cavity of the cylinder 3 on each group of telescopic assemblies is connected to the air source component 5 through a pipeline.

[0073] On the basis of the above embodiment, in a preferred embodiment, as Figures 1 to 3 As shown, the first die head 1 is provided with a locking assembly at at least one end in its length direction, and the locking assembly includes a locking part; the locking part has a first position adjusted to connect with the second die head 2 when the mold is closed, and a second position separated from the second die head 2.

[0074] In this embodiment, a locking assembly is provided, and when the first die head 1 and the second die head 2 are closed, the locking portion of the locking assembly is adjusted to the first position so that the locking portion is connected to the second die head 2, and the second die head 2 is connected to the first die head 1, so that when the second die head 2 is flipped over to open the mold and the clamping screws are removed or the clamping screws are locked, it prevents the operator from suddenly falling open due to improper operation or other reasons, thereby playing the role of limit locking, further improving the safety during operation. When it is necessary to flip the second die head 2 to open the mold, the locking portion is adjusted to the second position so that the locking portion is separated from the second die head 2, so as to facilitate flipping the second die head 2 to open the mold.

[0075] Specifically, two groups of locking assemblies are provided, and the two groups of locking assemblies are respectively provided at both ends of the first die head 1 .

[0076] On the basis of the above embodiment, in a preferred embodiment, as Figures 1 to 3 As shown, the locking assembly also includes a hinge part 16; one end of the hinge part 16 is connected to the first die head 1 by a screw, and the other end is connected to the locking part; the first die head 1 is provided with a first arc groove 17 corresponding to the locking part on the end face of one end along its length direction, and the second die head 2 is provided with a second arc groove 18 corresponding to the locking part on the end face of one end along its length direction; when the first die head 1 and the second die head 2 are clamped, the first arc groove 17 is connected to the second arc groove 18 to form a continuous third arc groove; the axis of the third arc groove is coaxial with the axis of the screw, and the locking part is adapted to be slidably connected in the third arc groove.

[0077] In this embodiment, a first arc groove 17 and a second arc groove 18 are respectively provided on the first die head 1 and the second die head 2, so that when the first die head 1 and the second die head 2 are closed, the first arc groove 17 and the second arc groove 18 are connected to form a third arc groove. Since the axis of the third arc groove is coaxial with the axis of the screw, by loosening the screw, the locking part can move around the axis of the screw in the third arc groove on the hinge part 16. When the locking part is rotated into the second arc groove 18, it can be fixed by tightening the screw so that the locking part limits the second die head 2, so that when the second die head 2 is flipped over to open the mold and disassemble the mold screw or close the mold to lock the mold screw, the operator is prevented from suddenly falling open due to improper operation or other reasons. Conversely, when the second die head 2 needs to be flipped over to open the mold, the locking part is adjusted to the first arc groove 17 and separated from the second die head 2.

[0078] As a convertible embodiment, the telescopic component can be selected as a hydraulic cylinder, a hydraulic rod or an electric telescopic rod.

[0079] The specific working principle of the buffer device provided in this embodiment is as follows: the coating lip of the coating die head is set upward to coat the substrate 20. When the gasket between the first die head 1 and the second die head 2 needs to be replaced, the mold screws on the first die head 1 and the second die head 2 can be removed, the locking part is adjusted to the second position, and the second die head 2 is driven to flip downward on the first die head 1 through the pull rod 19. At this time, the first cavity of the cylinder 3 is controlled to be connected with the throttle valve through the three-way valve 6 and the throttle valve is adjusted to a preset opening. When the second die head 2 flips downward, the first hinge block 13 compresses the piston rod 4 to shorten. During the shortening process of the piston rod 4, the gas in the first cavity is continuously compressed and discharged through the throttle valve. The shortening speed of the piston rod 4 is controlled by controlling the exhaust speed of the throttle valve, thereby overcoming the gravity of the second die head 2 to control the flipping speed of the second die head 2, thereby playing a buffer role. The impact effect can prevent the second die head 2 from rapidly turning over and falling due to its own gravity during the turning process, causing damage to the coating die head or injury to the operator, thereby improving safety, and buffering is performed by controlling the exhaust opening, and its stability is higher; when it is necessary to turn the second die head 2 upward to close the mold with the first die head 1, the three-way valve 6 is adjusted to connect the air source part 5 with the first cavity of the cylinder 3, and the air source is introduced into the first cavity to push the piston rod 4 to extend, thereby providing assistance when the first die head 1 and the second die head 2 are closed, assisting in closing the mold, saving manpower, and adjusting the locking part to the first position after closing the mold to lock the second die head 2, so as to facilitate the installation of the closing screw, further improving safety, and solving the technical problem that the upper die head of the existing coating die head will rapidly open downward under the action of its own gravity when opening the mold, which poses certain safety hazards.

[0080] Example 3

[0081] See also Figures 1 to 3 This embodiment provides a coating die head, including: a first die head 1; a second die head 2, which is hinged to the first die head 1; and a buffer device, which adopts the buffer device of Example 1 or Example 2.

[0082] The coating die provided in this embodiment adopts the buffer device of Example 1 or Example 2, and connects the first die 1 and the second die 2 through the telescopic component of the buffer device. The specific structure of the buffer device is the same as that of Example 1 or Example 2, so that the coating die with the buffer device has at least the same technical effect as the above-mentioned buffer device. The specific principle is the same as that of Example 1 or Example 2, and will not be repeated here.

[0083] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A buffer device, characterized in that: The invention is used for controlling the opening or closing of a first die head (1) and a second die head (2) of a coating die head, wherein the first die head (1) and the second die head (2) are hingedly connected, and the buffer device comprises: At least one set of telescopic components, wherein the telescopic components are hinged to the first die head (1), and the telescopic ends of the telescopic components are hinged to the second die head (2), and are used to assist in opening and closing by driving the telescopic ends of the telescopic components to cooperate and telescope when the second die head (2) and the first die head (1) are opened and closed.

2. The buffer device according to claim 1, characterized in that The telescopic assembly comprises a cylinder (3), the cylinder (3) is hinged to the first die head (1), and the piston rod (4) of the cylinder (3) is hinged to the second die head (2); the inner cavity of the cylinder (3) is connected to an air source component (5), and the air source component (5) is used to provide an air source to drive the piston rod (4) to move.

3. The buffer device according to claim 2, characterized in that The cylinder (3) is arranged on a side of the coating die head away from its coating lip, and the telescopic assembly further comprises a three-way valve (6) and an exhaust member (7); the exhaust member (7) is connected to the inner cavity of the cylinder (3) through the three-way valve (6) and is used to adjust the opening of the inner cavity of the cylinder (3) for exhaust; The air source component (5) is connected to the inner cavity of the cylinder (3) through the three-way valve (6); wherein the three-way valve (6) is used to control the inner cavity of the cylinder (3) to be connected to the air source component (5), or to control the inner cavity of the cylinder (3) to be connected to the exhaust component (7).

4. The buffer device according to claim 3, characterized in that The exhaust component (7) is a throttle valve; And / or, the exhaust end of the exhaust member (7) is connected to a first muffler (8) for muffler when the exhaust member (7) is emitting exhaust gas.

5. The buffer device according to claim 2, characterized in that: The piston rod (4) is slidably connected to the inner cavity of the cylinder (3) through a piston seal; the piston divides the inner cavity of the cylinder (3) into a first cavity and a second cavity, and the air source component (5) is connected to the first cavity; the second cavity is connected to the outside through a second muffler (9); and / or, the air source component (5) is connected to the air cylinder (3) via a pressure regulating valve (10); And / or, the piston rod (4) is hinged to the second die head (2) through a cylinder joint (11); a threaded hole is provided on the cylinder joint (11), and an external thread is provided on the piston rod (4) for adapting and connecting with the threaded hole; a locking nut (12) is sleeved on the piston rod (4), and the locking nut (12) is threadedly connected to the external thread and is used for locking and limiting when the piston rod (4) is connected to the cylinder joint (11).

6. The buffer device according to any one of claims 1 to 5, characterized in that: A hinge assembly is provided on the side of the coating die head facing away from its coating lip, and the first die head (1) and the second die head (2) are hingedly connected via the hinge assembly.

7. The buffer device according to claim 6, characterized in that The hinge assembly comprises a first hinge block (13) and a second hinge block (14), wherein the first hinge block (13) is connected to the first die head (1), and the second hinge block (14) is connected to the second die head (2); the first hinge block (13) and the second hinge block (14) are hinged around the length direction of the coating die head; a limit block (15) is provided on the side of the second hinge block (14) facing away from the second die head (2), and the limit block (15) is used for abutting the first hinge block (13) after the second hinge block (14) rotates to a preset angle when the mold is opened.

8. The buffer device according to any one of claims 1 to 5, characterized in that: The first die head (1) is provided with a locking assembly at at least one end in its length direction, and the locking assembly comprises a locking portion; the locking portion has a first position adjusted to connect with the second die head (2) during mold closing, and a second position separated from the second die head (2).

9. The buffer device according to claim 8, characterized in that The locking assembly further comprises a hinge portion (16); one end of the hinge portion (16) is connected to the first die head (1) via a screw, and the other end is connected to the locking portion; The first die head (1) is provided with a first arcuate groove (17) on one end surface along its length direction corresponding to the locking portion, and the second die head (2) is provided with a second arcuate groove (18) on one end surface along its length direction corresponding to the locking portion; When the first die head (1) and the second die head (2) are closed, the first arc groove (17) and the second arc groove (18) are connected to form a continuous third arc groove; the axis of the third arc groove is coaxial with the axis of the screw, and the locking portion is adapted to be slidably connected in the third arc groove.

10. A coating die head, characterized in that: include: a first die head (1); A second die head (2) is hinged to the first die head (1); The buffer device adopts the buffer device as described in any one of claims 1 to 9.

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