End cooling device of coating machine

Abstract

The present invention relates to the technical field of optical film end edge cooling devices, and provides a new end edge cooling device for a coating machine, including a shell, a side wall of which is provided with an air inlet hole to facilitate external air to enter the interior of the shell; an air supply cooling component, which is installed inside the shell and is used to cool the normal temperature air entering the interior of the shell and conduct the cooled air; a cooling box body, which is connected to the shell through an air supply duct, and has a first cooling air outlet and a second cooling air outlet arranged at intervals, and the air conducted by the air supply cooling component is used to cool the upper and lower surfaces of the end edge of the optical film respectively; a filter component, which is installed on the cooling box body and is used to filter the air conducted from the air supply duct.

Description

Technical Field

[0001] The invention relates to the technical field of optical film end cooling devices, and in particular to an end cooling device of a coating machine. Background Art

[0002] Coating machines are primarily used for surface coating production of films, paper, and other materials. They coat rolled substrates with a layer of adhesive, paint, or ink, drying them before rewinding. They utilize a dedicated multifunctional coating head capable of producing a variety of surface coatings. Both the rewinder and unwinder are equipped with full-speed automatic film splicing mechanisms and PLC-programmed closed-loop tension control.

[0003] Existing high-end optical films have cooling issues at both ends of the substrate width during the stretching and drying process. Specifically, after exiting the oven, the temperature at the points where the mechanical fixtures on the left and right sides of the substrate contact the film is higher than that in the center of the film (due to poor heat dissipation), resulting in poor product quality. Furthermore, the requirements for high-end optical films are relatively high. If the cooling air blowing towards the ends of the film contains too many large particles, product quality issues are likely to occur.

[0004] Therefore, we propose a cooling device for the end of optical film of a coating machine. Therefore, we propose a cooling device for the end of optical film of a coating machine. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In response to the deficiencies in the prior art, the present invention provides an end cooling device for a coating machine. By providing an air supply cooling component and a first cooling air port and a second cooling air port of a cooling box body, air outside the device can be sucked into the device and cooled through the cooling component, and then come out from the first cooling air port and the second cooling air port to cool the upper and lower sides of the end of the optical film respectively. By providing a filter component and a locking component, the air blown out from the air supply duct can be filtered to reduce large particles of impurities blowing directly to the two end edges of the optical film. At the same time, the filter net that has been used for a long time can be replaced to reduce labor efficiency.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] An end cooling device for a coating machine, comprising:

[0010] The shell has an air inlet on its side wall to facilitate the entry of external air into the shell;

[0011] An air supply cooling assembly is installed inside the housing to cool the room temperature air entering the housing and conduct the cooled air;

[0012] The cooling box is connected to the housing through an air supply duct and is provided with a first cooling air outlet and a second cooling air outlet at intervals, and the air conducted from the air supply cooling assembly is used to cool the upper and lower surfaces of the optical film end edges respectively;

[0013] The filter assembly is installed on the cooling box body and is used to filter the air conducted from the air supply duct.

[0014] Preferably, the filter assembly comprises:

[0015] An unwinding assembly, which is an unwinding roller installed at the bottom of the cooling box;

[0016] A winding assembly, which is a winding roller installed on the top of the cooling box;

[0017] The filter drum is divided into a drum and a filter screen. The drum is sleeved on the unwinding roller of the unwinding assembly. One end of the filter screen is wrapped layer by layer along the outer circumference of the drum to form a cylindrical shape. The other end of the filter screen first passes through the bottom of the cooling box body and extends inside the cooling box body and extends out of the cooling box body. The filter screen extending out of the cooling box body is connected to the winding roller;

[0018] Preferably, a locking assembly is provided on one side of the retracting (unretracting) roller, for locking and unlocking the rotation of the retracting (unretracting) roller.

[0019] Preferably, the locking assembly comprises:

[0020] The locking disc is sleeved on the drive shaft of the winding roller, and the locking disc and the drive shaft do not rotate. The locking disc is provided with a number of evenly distributed locking teeth and grooves;

[0021] A mounting plate, which is mounted on the cooling box body located on one side of the limiting plate;

[0022] The transmission rod is slidably connected to the mounting plate and extends toward the locking disk to form a locking piece that is matched with the locking tooth groove.

[0023] Preferably, a synchronization component is further installed on the cooling box body, which is used to simultaneously move the transmission rods of the two locking components towards or away from each other.

[0024] Preferably, the synchronization component includes:

[0025] The connecting rod is divided into a connecting rod and a movable rod. There are two connecting rods. The two ends of the movable rod are respectively hinged to one end of the connecting rod. One connecting rod is hinged to the transmission rod in the limit assembly of the unwinding roller, and the other connecting rod is hinged to the transmission rod in the limit assembly of the winding roller, which is used to synchronously drive the two transmission rods to move;

[0026] The driving assembly is installed on one side of the connecting rod and connected to the movable rod, and is used to push the connecting rod and change the angle between the connecting rods respectively hinged at both ends of the movable rod.

[0027] Preferably, a limiting groove is provided on the outer surface of the winding roller, and a plurality of elastic limiting members are connected to the inner wall thereof for limiting one end of the filter screen extending from the interior of the cooling box body within the winding roller.

[0028] Preferably, an inlet groove is provided at the bottom of the cooling box body, an outlet groove is provided at the top of the cooling box body, and wind guide plates of the same structure are installed at both ends of the inlet groove and the outlet groove to guide the wind blowing from the air supply duct to the two grooves.

[0029] Preferably, a lifting assembly is also installed in the cooling box body to help lift the filter screen passing through the inlet groove to the outlet groove.

[0030] Preferably, the lifting assembly includes:

[0031] There are two guide rail plates, each of which is installed inside the cooling box body, and one end of each guide rail plate is installed on the side close to the introduction groove, and the other end of each guide rail plate extends vertically upward to the side close to the outlet groove, for connecting the upper and lower inner wall surfaces of the cooling box body;

[0032] The sliding rod has sliding sleeves at both ends, and is slidably connected to the guide plate through the sliding sleeves. A hook for piercing the filter screen is provided, and a lifting ear is installed on the sliding sleeve at one end, and a hook adapted to the lifting ear is installed on the top of the inner wall of the cooling box body.

[0033] (3) Beneficial effects

[0034] The embodiment of the present invention provides an end cooling device for a coating machine. It has the following beneficial effects:

[0035] 1. By setting up the air supply cooling component and the first cooling air outlet and the second cooling air outlet of the cooling box, the air outside the device can be sucked into the device and cooled through the cooling component, and then come out from the first cooling air outlet and the second cooling air outlet to cool the upper and lower sides of the optical film end respectively.

[0036] 2. By providing a filter assembly and a locking assembly, the air blown out from the air supply duct can be filtered to reduce the large particles of impurities blowing directly to the two ends of the optical film. At the same time, the filter net used for a long time can be replaced to reduce labor efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0038] Figure 2 for Figure 1 A magnified schematic diagram of the synchronization component structure;

[0039] Figure 3 It is a left-side structural schematic diagram of the present invention;

[0040] Figure 4 for Figure 3 Schematic diagram of the cross-sectional view of the central air supply cooling assembly structure;

[0041] Figure 5 It is a right side structural schematic diagram of the present invention;

[0042] Figure 6 for Figure 5 A magnified schematic diagram of the mid-lift assembly structure;

[0043] Figure 7 This is a schematic diagram of the three-dimensional structure of the present invention after the sealing shell is hidden;

[0044] Figure 8 for Figure 7 An enlarged schematic diagram of the middle locking assembly structure;

[0045] Figure 9 This is a schematic diagram of the structure of the present invention from the right side after the sealing shell is hidden;

[0046] Figure 10 for Figure 9 Enlarged schematic diagram of the cooling box structure;

[0047] Figure 11 This is a schematic diagram of the main structure of the present invention after the sealing shell is hidden;

[0048] Figure 12 for Figure 11 An enlarged cross-sectional view of the filter assembly structure;

[0049] Figure 13 for Figure 12 Middle B is an enlarged schematic diagram;

[0050] In the picture:

[0051] 1. Shell; 1.1. Air supply duct;

[0052] 2. Air supply cooling assembly; 2.1. Cooling water exchanger; 2.2. Air supply fan;

[0053] 3. Cooling box; 3.1. First cooling air outlet; 3.2. Second cooling air outlet; 3.3. Air breaking plate;

[0054] 4. Filter assembly; 4.1. Winding assembly; 4.2. Unwinding assembly; 4.3. Filter drum; 4.3.1. Drum; 4.3.2. Filter screen;

[0055] 5. Locking assembly; 5.1. Locking plate; 5.2. Mounting plate; 5.3. Transmission rod; 5.4. Locking piece;

[0056] 6. Synchronizing assembly; 6.1. Connecting rod; 6.1.1. Connecting rod; 6.1.2. Movable rod; 6.2. Driving assembly;

[0057] 7. Lifting assembly; 7.1. Guide plate; 7.2. Sliding rod; 7.2.1. Sliding sleeve; 7.2.2. Hook; 7.2.3. Lifting lug; 7.3. Hook;

[0058] 8. Elastic limiter; 8.1. Support angle; 8.2. Synchronous rod;

[0059] 9. Wind deflector;

[0060] 10. Introduce the trough;

[0061] 11. Lead-out trough. DETAILED DESCRIPTION

[0062] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0063] Refer to the attached Figure 1-4 , an end cooling device of a coating machine, comprising,

[0064] The housing 1 has an air inlet opening on its side wall to facilitate the entry of external air into the housing 1;

[0065] The air supply cooling assembly 2 is installed inside the housing 1 and is used to cool the room temperature air entering the housing 1 and conduct the cooled air;

[0066] An air supply duct 1.1 is installed on the top of the shell 1, and the two are internally connected, so that the gas entering the shell 1 can enter the air supply duct 1.1;

[0067] The air supply cooling assembly 2 is a cooling water exchanger 2.1 and an air blower 2.2 which are respectively installed inside the housing 1, and the air blower 2.2 is installed above the cooling water exchanger 2.1, and blows air toward the air supply duct 1.1.

[0068] The cooling box 3 is connected to the housing 1 through the air supply duct 1.1 and is provided with a first cooling air outlet 3.1 and a second cooling air outlet 3.2 at intervals. The air conducted from the air supply cooling assembly 2 is used to cool the upper and lower surfaces of the optical film end edges.

[0069] A gap is formed at one end of the cooling box body 3, and the other end is connected to the housing 1 through an air supply duct 1.1. A first cooling air outlet 3.1 and a second cooling air outlet 3.2 are formed on the surface of the cooling box body 3 on both sides of the gap.

[0070] In some embodiments, in order to evenly cool the upper and lower surfaces of the optical film end, the first cooling air outlet 3.1 and the second cooling air outlet 3.2 are arranged parallel to each other and parallel to the upper and lower surfaces of the optical film end.

[0071] The first cooling air outlet 3.1 and the second cooling air outlet 3.2 are connected to the same air-breaking plate 3.3. The air-breaking plate 3.3 is bent toward the air supply duct 1.1. In the bent state, the two ends of the air-breaking plate 3.3 are respectively connected to the first cooling air outlet 3.1 and the second cooling air outlet 3.2 via connecting plates.

[0072] It is understandable that, in some embodiments, in order to ensure that the air coming out of the air supply duct 1.1 can be evenly guided, the air breaking plate 3.3 in the bent state is facing the center of the air supply duct 1.1.

[0073] The filter assembly 4 is mounted on the cooling box body 3 and is used for preliminarily filtering the air conducted from the air supply duct 1.1.

[0074] The filter assembly 4 includes:

[0075] Unwinding assembly 4.2, which is an unwinding roller installed at the bottom of the cooling box body 3;

[0076] The winding assembly 4.1 is a winding roller installed on the top of the cooling box 3;

[0077] The filter drum 4.3 is divided into a drum 4.3.1 and a filter screen 4.3.2. The drum 4.3.1 is mounted on the unwinding roller of the unwinding assembly 4.2. One end of the filter screen 4.3.2 is wrapped along the outer circumference of the drum 4.3.1 to form a cylindrical shape. The other end of the filter screen 4.3.2 first passes through the bottom of the cooling box body 3 and extends inside the cooling box body 3 and then extends out of the cooling box body 3. The filter screen 4.3.2 extending out of the cooling box body 3 is connected to the take-up roller.

[0078] In some embodiments, an inlet groove 10 is provided at the bottom of the cooling box body 3, and an outlet groove 11 is provided at the top of the cooling box body 3, so that the filter 4.3.2 can be introduced into the cooling box body 3 through the inlet groove 10 and then extended out of the cooling box body 3 through the outlet groove 11;

[0079] It is understood that in order to evenly filter the air coming out of the air supply duct 1.1, the inlet slot 10 and the outlet slot 11 are arranged at the same horizontal plane;

[0080] Air guide plates 9 are provided at both ends of the inlet slot 10. The air guide plates 9 at both ends are inclined toward the vertical direction of the inlet slot 10 and there is a distance between them. They are used to guide the wind blowing from the air supply duct 1.1 to the inlet slot 10 and prevent the wind from blowing directly out of the inlet slot 10.

[0081] The air guide plate 9 at one end is of two sections, and the two ends are hinged to each other. By swinging the air guide plate 9, the distance between the air guide plates 9 at both ends can be adjusted. When replacing the entire filter cylinder, it is convenient for the filter to extend into the inlet groove 10. The two ends of the outlet groove 11 are also provided with air guide plates 9 of the same structure.

[0082] A limit groove is formed on the outer surface of the winding roller, and a plurality of elastic limit members 8 are connected to the inner wall of the limit groove, which is used to limit one end of the filter screen 4.3.2 extending from the interior of the cooling box 3 within the winding roller. The plurality of elastic limit members 8 are arranged in the limit groove at intervals, and a common synchronization rod 8.2 is connected between the plurality of elastic limit members 8 to facilitate the coordinated operation of the plurality of elastic limit members 8;

[0083] In some embodiments, one end of the elastic limit member 8 is connected to the limit groove, and two branch angles 8.1 are provided on the elastic limit member 8. In the normal state, the two branch angles 8.1 both contact the side wall of the limit groove. When in use, the elastic limit member 8 is first opened upward (that is, there is no conflict between the two branch angles 8.1 and the limit groove, and there is a gap between the two branch angles 8.1 and the side wall of the limit groove), and then one end of the filter screen 4.3.2 extending from the inside of the cooling box body 3 is inserted into the limit groove through the gap, and finally the elastic limit member 8 is released to reset it. The two branch angles 8.1 both squeeze the filter screen 4.3.2 against the inner wall of the limit groove to prevent the filter screen 4.3.2 from being separated from the winding roller under the action of external force when winding at the beginning.

[0084] A locking assembly 5 is provided on one side of the winding roller and the unwinding roller for locking and unlocking the rotation of the winding roller and the unwinding roller.

[0085] The locking assembly 5 comprises:

[0086] The locking disc 5.1 is sleeved on the drive shaft of the winding roller, and the locking disc 5.1 and the drive shaft do not rotate. The locking disc 5.1 is provided with a number of evenly distributed locking teeth and grooves;

[0087] A mounting plate 5.2, which is mounted on the cooling box body 3 located on one side of the limiting plate;

[0088] The transmission rod 5.3 is slidably connected to the mounting plate 5.2 and extends toward the locking disk 5.1 to form a locking member 5.4. The locking member 5.4 is adapted to the locking tooth groove and slides on the mounting plate 5.2 through the transmission rod 5.3, so that the locking member 5.4 approaches or moves away from the locking tooth groove, which can restrict and release the rotation of the locking disk 5.1, thereby achieving locking and unlocking of the winding roller.

[0089] It can be understood that the movement of the locking member 5.4 in the direction away from the cooling box body 3 is used to release the restriction on the rotation of the locking disk 5.1, that is, to unlock the winding roller; conversely, the movement of the locking member 5.4 in the opposite direction will lock the winding roller;

[0090] A locking assembly 5 of the same structure is provided on one side of the unwinding roller, which will not be described in detail.

[0091] In some embodiments, a synchronization assembly 6 is further provided on the cooling box body 3 , and the synchronization assembly 6 is installed on the cooling box body 3 on the same side as the transmission rod 5 . 3 of the locking assembly 5 .

[0092] The synchronization component 6 includes:

[0093] The connecting rod 6.1 is divided into a connecting rod 6.1.1 and a movable rod 6.1.2. There are two connecting rods 6.1.1. Both ends of the movable rod 6.1.2 are hinged to one end of the connecting rod 6.1.1. One connecting rod 6.1.1 is hinged to the transmission rod 5.3 in the limit assembly of the unwinding roller, and the other connecting rod 6.1.1 is hinged to the transmission rod 5.3 in the limit assembly of the winding roller, which is used to synchronously drive the two transmission rods 5.3 to move;

[0094] The driving assembly 6.2 is installed on one side of the connecting rod 6.1 and is connected to the movable rod 6.1.2. It is used to push the connecting rod 6.1 and change the angle between the connecting rods 6.1.1 respectively hinged at both ends of the movable rod 6.1.2, so that the distance between the two transmission rods 5.3 changes, thereby controlling the locking member 5.4 on each transmission rod 5.3 to synchronously move away from or approach the corresponding locking disk 5.1, thereby realizing the synchronous locking and unlocking of the reeling (unreeling) rollers, which can keep the filter screen 4.3.2 in the cooling box body 3 in a tensioned state, prevent the wind coming out of the air supply duct 1.1 from blowing on the filter screen 4.3.2 in the box body for a long time, forcing the filter screen 4.3.2 to release the tensioned state.

[0095] A lifting assembly 7 is also installed in the cooling box body 3 to help lift the filter screen 4.3.2 passing through the inlet groove 10 to the outlet groove 11.

[0096] The lifting assembly 7 comprises:

[0097] Two guide rail plates 7.1 are installed inside the cooling box body 3, and one end of each guide rail plate 7.1 is installed on the side close to the introduction groove 10, and the other end of each guide rail plate 7.1 extends vertically upward to the side close to the outlet groove 11, for connecting the upper and lower inner wall surfaces of the cooling box body 3;

[0098] The sliding rod 7.2 is provided with a sliding sleeve 7.2.1 at both ends, and is slidably connected to the guide plate 7.1 through the sliding sleeve 7.2.1, and is provided with a hook 7.2.2 for puncturing the filter screen 4.3.2. The filter screen 4.3.2 extending from the introduction groove 10 is punctured by the hook 7.2.2, and then the sliding rod 7.2 is lifted and moved along the guide plate 7.1 toward the outlet groove 11. A lifting ear 7.2.3 is installed on the sliding sleeve 7.2.1 at one end, and the inner wall top of the cooling box body 3 is cooled. A hook 7.3 that is compatible with the lifting ear 7.2.3 is installed on the top, which is used to hang the lifting ear 7.2.3 on the hook 7.3 to prevent workers from directly pinching the filter screen 4.3.2 with their hands and pulling it up to the outlet groove 11. It is also necessary to hold the sliding rod 7.2 with one hand and use the other hand to remove the filter screen 4.3.2 from the hook 7.2.2, hang it on the hook 7.3 through the lifting ear 7.2.3, and pull the sliding rod 7.2. The worker can operate the filter screen 4.3.2 with both hands, which is easy to operate and improves convenience.

[0099] Sealing shells are installed on the top and bottom of the cooling box body 3 respectively, which are used to prevent the gas in the cooling box body 3 from escaping from the outlet groove 11 and / or the inlet groove 10 to the outside of the cooling box body 3. The escaping air is confined inside by the sealing shell to ensure the cooling effect and prevent external dust from entering the cooling box body 3.

[0100] A retractable cover is provided on the top of each sealing shell, and the cover is sealed to the sealing shell, so that the sealing shell can be opened to facilitate replacement of the filter assembly 4 .

[0101] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0102] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An end cooling device for a coating machine, comprising: The housing (1) has an air inlet opening on its side wall to facilitate external air to enter the interior of the housing (1); An air supply cooling assembly (2) is installed inside the housing (1) and is used to cool the normal temperature air entering the housing (1) and conduct the cooled air; A cooling box body (3) is connected to the housing (1) via an air supply duct (1.1), and is provided with a first cooling air outlet (3.1) and a second cooling air outlet (3.2) at intervals, for cooling the upper and lower surfaces of the optical film end edges respectively using air conducted from the air supply cooling assembly (2); A filter assembly (4) mounted on the cooling box (3) for filtering the air conducted from the air supply duct (1.1); The filter assembly (4) comprises: An unwinding assembly (4.2), which is an unwinding roller installed at the bottom of the cooling box (3); A winding assembly (4.1), which is a winding roller installed on the top of the cooling box (3); The filter drum (4.3) is divided into a drum (4.3.1) and a filter screen (4.3.2), the drum (4.3.1) is sleeved on the unwinding roller of the unwinding assembly (4.2), one end of the filter screen (4.3.2) is wrapped layer by layer along the outer circumference of the drum (4.3.1) to form a cylindrical shape, the other end of the filter screen (4.3.2) first passes through the bottom of the cooling box body (3) and extends inside the cooling box body (3) and extends out from the cooling box body (3), and the filter screen (4.3.2) extending out of the cooling box body (3) is connected to the reel; A locking assembly (5) is provided on one side of the unwinding roller and the winding roller for locking and unlocking the rotation of the two rollers; The locking assembly (5) comprises: A locking disc (5.1) is sleeved on the drive shaft of the winding roller, and the locking disc (5.1) and the drive shaft do not rotate, and the locking disc (5.1) is provided with a plurality of evenly distributed locking teeth and grooves; A mounting plate (5.2) mounted on the cooling box body (3) located on one side of the limiting plate; A transmission rod (5.3) is slidably connected to the mounting plate (5.2) and extends toward the locking disk (5.1) to form a locking member (5.4) adapted to the locking tooth groove; The outer surface of the winding roller is provided with a limiting groove, and the inner wall thereof is connected to a plurality of elastic limiting members (8) for limiting one end of the filter screen (4.3.2) extending from the interior of the cooling box (3) within the winding roller; The bottom of the cooling box body (3) is provided with an inlet groove (10), and the top of the cooling box body (3) is provided with an outlet groove (11), and both ends of the inlet groove (10) and the outlet groove (11) are equipped with air guide plates (9) of the same structure for guiding the air blowing from the air supply duct (1.1) to the two grooves.

2. The end cooling device of a coating machine according to claim 1, characterized in that: The cooling box body (3) is also provided with a synchronization component (6) for simultaneously moving the transmission rods (5.3) of the two locking components (5) toward or away from each other.

3. The end cooling device of a coating machine according to claim 2, characterized in that: The synchronization component (6) includes: A connecting rod (6.1) is divided into a connecting rod (6.1.1) and a movable rod (6.1.2). There are two connecting rods (6.1.1). Both ends of the movable rod (6.1.2) are hinged to one end of the connecting rod (6.1.1). One connecting rod (6.1.1) is hinged to the transmission rod (5.3) in the limit assembly of the unwinding roller, and the other connecting rod (6.1.1) is hinged to the transmission rod (5.3) in the limit assembly of the winding roller, and is used to synchronously drive the two transmission rods (5.3) to move; The driving assembly (6.2) is installed on one side of the connecting rod (6.1) and connected to the movable rod (6.1.2), and is used to push the connecting rod (6.1) and change the angle between the connecting rods (6.1.1) respectively hinged at both ends of the movable rod (6.1.2).

4. The end cooling device of a coating machine according to claim 1, characterized in that: A lifting assembly (7) is also installed in the cooling box body (3) to help lift the filter screen (4.3.2) passing through the inlet groove (10) to the outlet groove (11).

5. The end cooling device of a coating machine according to claim 4, characterized in that: The lifting assembly (7) comprises: Two guide rail plates (7.1) are respectively installed inside the cooling box body (3), and one end of each guide rail plate (7.1) is installed on a side close to the introduction groove (10), and the other end of each guide rail plate (7.1) extends vertically upward to a side close to the outlet groove (11) for connecting the upper and lower inner wall surfaces of the cooling box body (3); The sliding rod (7.2) is provided with a sliding sleeve (7.2.1) at both ends, and is slidably connected to the guide plate (7.1) through the sliding sleeve (7.2.1), and is provided with a hook (7.2.2) for puncturing the filter screen (4.3.2), wherein a lifting ear (7.2.3) is installed on the sliding sleeve (7.2.1) at one end, and a hook (7.3) adapted to the lifting ear (7.2.3) is installed on the top of the inner wall of the cooling box body (3).

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