A double-sided coating device

Abstract

The application discloses a double-sided coating device, comprising a coating rack, a plurality of over rollers, a first coating mechanism and a second coating mechanism are sequentially arranged on the coating rack, the first coating mechanism comprises a first coating die head and a first coating support roller, a gap is left between the first coating die head and the first coating support roller for foil passing, the second coating mechanism comprises a second coating die head and a support assembly, the support assembly and the second coating die head are sequentially arranged along the conveying direction of the foil, the support assembly comprises a support wire bar and an adjusting mechanism, the adjusting mechanism can adjust the position of the support wire bar in the horizontal direction and the vertical direction, and the vertical height of the support wire bar is greater than that of the coating lip, so that the device can provide stable support for the coated foil, and shaking of the foil during conveying is avoided, and the coating effect is affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coating, in particular to a double-sided coating device. BACKGROUND

[0002] The existing coating device usually adopts roll coating method, when applied to the scene of double-sided coating, firstly, the A surface of the foil is coated by the A surface coating device, and then the B surface of the foil is coated by the B surface coating device, but since the slurry coated on both surfaces is still in liquid state, the foil is prone to shaking when conveying to the next station after completing the coating work, which affects the stability of the foil surface coating and reduces the coating quality. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the present application provides a double-sided coating device which can provide stable support for the coated foil to avoid shaking during conveying and affect the coating effect.

[0004] The technical scheme adopted by the present application to solve its technical problems is:

[0005] A double-sided coating device, comprising a coating rack, a plurality of over rollers, a first coating mechanism and a second coating mechanism are sequentially arranged on the coating rack, the first coating mechanism comprises a first coating die head and a first coating support roller, a gap is left between the first coating die head and the first coating support roller for the foil to pass through, the second coating mechanism comprises a second coating die head and a support assembly, the support assembly and the second coating die head are sequentially arranged along the conveying direction of the foil, the support assembly comprises a support wire rod and an adjusting mechanism, the adjusting mechanism can adjust the position of the support wire rod in the horizontal direction and the vertical direction, and the vertical height of the support wire rod is greater than the vertical height of the coating lip of the second coating die head.

[0006] Further, the periphery of the first coating support roller is provided with a coating pressure roller, the foil can pass through between the coating pressure roller and the first coating support roller, and the coating pressure roller can press the foil tightly on the surface of the first coating support roller.

[0007] Further, the adjusting mechanism comprises a first adjusting mechanism and a first height adjusting assembly arranged on the first adjusting mechanism, the first adjusting platform is provided with a first displacement adjusting assembly, and the first displacement adjusting assembly can adjust the distance between the support wire rod and the coating lip.

[0008] Further, the first displacement adjusting assembly is arranged on both sides of the first adjusting platform, wherein the first displacement adjusting assembly on one side comprises a locking plate and a locking screw, the locking plate is pressed and fixed on the side of the first adjusting platform by the locking screw, and the first displacement adjusting assembly on the other side comprises a first adjusting ruler, a bolt and an adjusting ruler fixing seat, the adjusting ruler fixing seat is fixedly connected to the first adjusting platform, and the bolt is used for pressing the adjusting ruler to the adjusting ruler fixing seat.

[0009] Further, the first height adjusting assembly comprises a lower dovetail groove and an upper dovetail groove embedded on the top of the lower dovetail groove, and the surface of the lower dovetail groove is provided with a guide inclined surface.

[0010] Further, the first height adjusting assembly further comprises an adjusting nut, an adjusting screw and an adjusting handle, the lower dovetail groove is provided with a movable guide block and a fixed screw limiting block, one end of the adjusting screw is connected to the adjusting handle, the other end of the adjusting screw is inserted into the lower dovetail groove and connected to the guide block, and the adjusting nut is arranged at the connection position between the lower dovetail groove and the adjusting screw.

[0011] Further, the top of the upper dovetail groove is provided with a first bearing seat, two first bearings are arranged on the first bearing seat, and the support wire rod is arranged between the two first bearings.

[0012] Further, the adjusting mechanism comprises a second adjusting mechanism, the second adjusting mechanism is arranged at both ends of the support wire rod, the second adjusting mechanism comprises a second adjusting platform and a second height adjusting assembly arranged on the second adjusting platform, the second adjusting platform is provided with a second displacement adjusting assembly, and the structure of the second displacement adjusting assembly is the same as that of the first displacement adjusting assembly.

[0013] Further, the second height adjusting assembly comprises a spring, a first adjusting plate and a second adjusting plate connected to both ends of the spring, a support plate is arranged between the first adjusting plate and the second adjusting plate, a rotating shaft is arranged on the support plate, an adjusting block is movably connected to the rotating shaft, the adjusting block can rotate around the rotating shaft, the bottom surface of the second adjusting plate is provided with an adjusting column, and the side surface of the support plate is provided with a second adjusting ruler, the second adjusting ruler and the adjusting column are arranged on the opposite surfaces of the adjusting block.

[0014] Further, the top of the second height adjusting assembly is provided with a second bearing seat, the second bearing seat is provided with a second bearing, and the end of the support wire rod is sleeved in the second bearing.

[0015] Further, the adjusting mechanism comprises air floating support grooves, which can form high-density air films to support the wire rod, and the position of the wire rod can be adjusted by adjusting the size of the air source supplied to the air floating support grooves.

[0016] Further, the adjusting mechanism comprises air floating support grooves, which can form high-density air films to support the wire rod, and the position of the wire rod can be adjusted by adjusting the size of the air source supplied to the air floating support grooves.

[0017] The beneficial effects of the present application are as follows:

[0018] The present application provides a double-sided coating device, which is provided with a supporting assembly to provide stable support for the coated foil and avoid shaking of the foil during conveying to affect the coating effect. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below in combination with the drawings and examples.

[0020] Figure 1 is a schematic diagram of the overall assembly of the present application;

[0021] Figure 2 is a schematic diagram of the second coating mechanism in the first embodiment of the present application;

[0022] Figure 3 is a schematic diagram of the first adjusting mechanism in the first embodiment of the present application;

[0023] Figure 4 is a schematic diagram of the first adjusting platform in the first embodiment of the present application;

[0024] Figure 5 is a partial structure exploded view of the first adjusting mechanism in the first embodiment of the present application;

[0025] Figure 6 is a schematic diagram of the second adjusting mechanism in the first embodiment of the present application;

[0026] Figure 7 is a schematic diagram of the assembly of the second embodiment of the present application. DETAILED DESCRIPTION

[0027] The concept, specific structure and generated technical effects of the present application will be described clearly and completely in combination with the embodiments and drawings, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments, and other embodiments obtained by those skilled in the art on the basis of the embodiments of the present application without creative labor are within the protection scope of the present application. In addition, all the coupling / connection relations involved in the patent do not mean that the components are directly connected, but that a better coupling structure can be composed by adding or reducing coupling accessories according to the specific implementation. The technical features in the present application can be combined interactively without conflict.

[0028] Embodiment 1:

[0029] With reference to Figure 1 , the present application provides a double-sided coating device, in order to realize the function of double-sided coating, the present application sets two groups of coating mechanisms to perform coating work on the A side and B side of the foil respectively, and the specific structure is as follows:

[0030] The coating device comprises a coating rack 1, a plurality of over rollers 11 are arranged on the coating rack 1, and the over rollers 11 are used to guide and convey the foil. The coating rack 1 is also provided with a first coating mechanism and a second coating mechanism, the foil is transported to the first coating mechanism by the roller 11 to perform the coating work on the A side, and then is transported to the second coating mechanism by the over roller 11 to perform the coating work on the B side.

[0031] The first coating mechanism comprises a first coating die head 21 and a first coating support roller 14, one side of the coating port of the first coating die head 21 is opposite to the roller surface of the first coating support roller 14, a gap is left between the first coating die head 21 and the first coating support roller 14 for the foil to pass through, and the first coating support roller 14 is used to support the foil, when the foil is transported to the gap, the first coating die head 21 performs the coating work on the A side of the foil.

[0032] The over roller arranged near the first coating support roller 14 can be a coating pressure roller 13, the foil passes through between the coating pressure roller 13 and the first coating support roller 14, and the coating pressure roller 13 can press the foil tightly on the surface of the first coating support roller 14, so that the foil can be fully unfolded without wrinkles, and the coating work is more conducive to being performed.

[0033] The over roller arranged near the coating pressure roller 13 can be a coating encoder roller 12, and the coating encoder roller 12 can be used to record the length of the foil by installing a plurality of encoders on the roller ends.

[0034] The first coating mechanism further comprises a first coating die adjusting mechanism 23 for controlling the first coating die 21 to move to a specified position before starting the coating work. In actual work, a driving device such as a pneumatic cylinder or a servo motor can be used for control, and the specific mechanism is selected according to actual needs.

[0035] The over roll between the second coating mechanism and the first coating support roll can use an adjusting roll, which is provided with eccentric bearing seats at both ends of the over roll to adjust the height of both ends of the over roll, so as to ensure the consistency of the tension of the foil in the transverse direction.

[0036] The second coating mechanism comprises a second coating die 22 and a second coating die adjusting mechanism 24, which has the same function as the first coating die adjusting mechanism 23 described above, for controlling the second coating die 22 to move to a specified position before starting the coating work. The specific mechanism is selected according to actual needs.

[0037] Referring to Figure 2 , the specific structure of the second coating mechanism comprises a second coating die 22, a coating lip 201 provided on the second coating die 22, and a support assembly. The support assembly 3 and the coating lip 201 are arranged in sequence along the conveying direction of the foil. In work, when the foil is conveyed to the coating lip 201 by the support assembly, the foil will not rub against the coating lip 201 due to the supporting action of the support assembly, and the primer material on the surface of the foil will not be scratched. The degree of shaking of the foil is also reduced under the stable support of the support assembly.

[0038] The support assembly comprises a support wire rod 3 and an adjusting mechanism, which can adjust the position of the support wire rod 3 in the horizontal and vertical directions. The vertical height of the support wire rod 3 is greater than the vertical height of the second coating die 22. When the foil is conveyed to the support wire rod 3, the support wire rod 3 can support the foil. Since the height of the support wire rod 3 is greater than the vertical height of the second coating die 22, the foil will not contact the second coating die 22 when passing through the second coating die 22, and the second coating die 22 directly extrudes the slurry on the B surface of the foil to realize the second coating work.

[0039] The adjusting mechanism comprises a first adjusting mechanism 4 and a second adjusting mechanism 5. The first adjusting mechanism 4 is arranged at the middle part of the support wire rod 3, and the second adjusting mechanism 5 is arranged at both ends of the support wire rod 3. By arranging two groups of adjusting mechanisms, the straightness of the axis of the support wire rod 3 is ensured, and the flexible deformation of the support wire rod 3 in the axial direction under the influence of its own weight is prevented, so as to ensure the fixed distance from the foil to the coating lip 201 and the stability of the coating work.

[0040] Referring to Figures 3 to 5 The first adjusting mechanism comprises a first adjusting platform 42 and a first height adjusting assembly 43 arranged on the first platform, and the first adjusting platform 42 is provided with a first displacement adjusting assembly.

[0041] The first displacement adjusting assembly is arranged on both sides of the first adjusting platform 42. The first displacement adjusting assembly comprises a locking plate 427 arranged on one side of the first adjusting platform 42 and a stop screw 426 for pressing and fixing the locking plate 427 on the side of the first adjusting platform 42. The first displacement adjusting assembly further comprises a first adjusting scale 422, a bolt 423, a nut 424 and an adjusting scale fixing seat 425 arranged on the other side of the first adjusting platform 42, the adjusting scale fixing seat 425 is fixedly connected to the first adjusting platform 421, and the bolt 423 is used to press the first adjusting scale 422 against the adjusting scale fixing seat 425. The distance between the first adjusting platform 421 and the coating lip 201 can be finely adjusted by adjusting the first adjusting scale 422, and the first adjusting scale 422 can be a micrometer.

[0042] The first height adjusting assembly 43 comprises a lower dovetail groove 431 and an upper dovetail groove 432 embedded on the top of the lower dovetail groove 431, and the surface of the lower dovetail groove 431 is provided with a guide slope. When the upper dovetail groove 432 slides along the lower dovetail groove 431, the height of the upper dovetail groove 432 can be adjusted.

[0043] The first height adjusting assembly further comprises an adjusting nut 434, an adjusting screw 433 and an adjusting handle 41. One end of the lower dovetail groove 431 is provided with a mounting hole 437, and the groove of the lower dovetail groove 431 is provided with a movable guide block 435 and a fixed screw limiting block 436. One end of the adjusting screw 433 is connected to the adjusting handle 41, the other end of the adjusting screw 433 is inserted into the mounting hole 437 and the guide block 435, and the adjusting screw is fixed by the adjusting nut. The top of the guide block is fixedly connected to the upper dovetail groove, and the screw limiting block 436 is used for limiting the position of the adjusting screw 433 in the lower dovetail groove 431.

[0044] The top of the upper dovetail groove 432 is provided with a first bearing seat 44, and two first bearings 45 are arranged on the first bearing seat 44. The support wire rod 3 is arranged between the two first bearings 45, and the two first bearings 45 can provide a V-shaped supporting force to the support wire rod 3, enhance the precision of the support wire rod 3, effectively control the runout of the support wire rod 3 in operation, and improve the stability of the foil operation and thus improve the coating quality.

[0045] In the embodiment, the first adjusting mechanism is provided with three groups, which are respectively arranged at the two ends and the midpoint of the support wire bar 3. In operation, by rotating the adjusting handle, the adjusting screw can drive the guide block to slide in the lower dovetail groove, drive the upper dovetail groove to move along the guide slope on the surface of the lower dovetail groove, further adjust the height of the first bearing and the distance from the coating lip, correct the flexible deformation of the support wire bar 3 due to gravity, maintain the straightness of the support wire bar 2, so that the support wire bar 3 can be in good contact with the foil, and be suitable for coating lips with different gaps.

[0046] With reference to Figure 6 The second adjusting mechanism 5 comprises a second adjusting platform 51 and a second height adjusting assembly arranged on the second adjusting platform 51. The structure of the second adjusting platform 51 is the same as that of the first adjusting platform 42, and displacement adjusting assemblies are also arranged on the two sides thereof, which will not be described in detail here.

[0047] A second bearing seat 43 is arranged above the second height adjusting assembly, a second bearing 54 is arranged on the second bearing seat 53, and the end of the support wire bar 3 is sleeved in the second bearing 54. By the support of the first bearing 45 and the second bearings 54 at the two ends, the support wire bar 3 can rotate synchronously with the movement direction of the foil during the transportation of the foil, so as to ensure that the foil and the support wire bar 3 do not slide relative to each other, and the bottom coating material of the foil can be effectively protected.

[0048] The second height adjusting assembly comprises a first adjusting plate 521 and a second adjusting plate 522. The second adjusting plate 522 is provided with a support plate 528. A spring 523 is arranged between the first adjusting plate 521 and the second adjusting plate 522. The bottom of the first adjusting plate 521 is provided with an adjusting column 527. The support plate 528 is provided with a rotating shaft 526. The rotating shaft 526 is movably connected with an adjusting block 525. The adjusting block 525 can rotate around the rotating shaft 526.

[0049] The end of the support plate 528 is provided with a second adjusting ruler 524. The end of the second adjusting ruler 524 abuts against one side of the adjusting block 525, and the adjusting column 527 abuts against the other side of the adjusting block 525. When the end of the second adjusting ruler 524 is extended, the adjusting block 525 can be rotated against the adjusting column 527 and change the height of the first adjusting plate 521. When the second adjusting ruler 524 is retracted, the adjusting block 525 can be returned to the original position under the elastic reset of the spring 523.

[0050] Embodiment 2:

[0051] With reference to Figure 7In this embodiment, an air flotation support groove 6 is used to replace the first and second adjustment mechanisms in embodiment 1. A high-density air film can be formed through the air flotation support groove 6. This air film can overcome the flexible deformation of the support rod 3 due to its own weight. The air film can be adjusted by adjusting the size of the air source supplied to the air flotation support groove 6, thereby further adjusting the position of the support rod 3.

[0052] In this embodiment, several arc-shaped air-float plates 7 are also provided. The first arc-shaped air-float plate 7, which is set along the direction of the foil conveyor belt, is located above the coating lip 201, and the remaining arc-shaped air-float plates 7 are staggered and arranged behind the coating lip 201. By setting the arc-shaped air-float plates 7, the coated foil can be suspended and supported, avoiding direct contact between the foil and the coating lip 201, thus ensuring the coating quality.

[0053] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A double-sided coating apparatus, characterized in that, The device includes a coating frame, on which a plurality of rollers, a first coating mechanism, and a second coating mechanism are sequentially arranged. The first coating mechanism includes a first coating die and a first coating support roller, with a gap between the first coating die and the first coating support roller for foil to pass through. The second coating mechanism includes a second coating die and a support assembly, with the support assembly and the second coating die arranged sequentially along the foil's feeding direction. The support assembly includes a support bar and an adjustment mechanism, which can adjust the position of the support bar in the horizontal and vertical directions. The vertical height of the support bar is greater than the vertical height of the coating lip of the second coating die. The adjustment mechanism includes a first adjustment platform and a first height adjustment component disposed on the first adjustment platform. The first adjustment platform is provided with a first displacement adjustment component, which can adjust the distance between the support bar and the coating lip. The first height adjustment component includes a lower dovetail groove and an upper dovetail groove fitted into the top of the lower dovetail groove, wherein the surface of the lower dovetail groove is provided with a guide slope. The top of the upper dovetail groove is provided with a first bearing seat, and two first bearings are provided on the first bearing seat. The support bar is located between the two first bearings. The adjustment mechanism includes a second adjustment mechanism located at both ends of the support bar. The second adjustment mechanism includes a second adjustment platform and a second height adjustment component located on the second adjustment platform. The second adjustment platform is provided with a second displacement adjustment component, and the structure of the second displacement adjustment component is the same as that of the first displacement adjustment component. The second height adjustment assembly includes a spring, and a first adjustment plate and a second adjustment plate connecting the two ends of the spring. A support plate is provided between the first adjustment plate and the second adjustment plate. A rotating shaft is provided on the support plate. An adjustment block is movably connected to the rotating shaft. The adjustment block can rotate around the rotating shaft. An adjustment column is provided on the bottom surface of the second adjustment plate. A second adjustment ruler is provided on the side of the support plate. The second adjustment ruler and the adjustment column abut against the two opposite sides of the adjustment block.

2. The double-sided coating apparatus according to claim 1, characterized in that, The first coating support roller is provided with a coating pressure roller around its periphery. The foil can pass between the coating pressure roller and the first coating support roller. The coating pressure roller can press the foil onto the surface of the first coating support roller.

3. The double-sided coating apparatus according to claim 1, characterized in that, The first displacement adjustment assembly is located on both sides of the first adjustment platform. One side of the first displacement adjustment assembly includes a locking plate and a stop screw. The locking plate is pressed and fixed to the side of the first adjustment platform by the stop screw. The other side of the first displacement adjustment assembly includes a first adjustment ruler, a bolt and an adjustment ruler fixing seat. The adjustment ruler fixing seat is fixedly connected to the first adjustment platform, and the bolt presses the adjustment ruler against the adjustment ruler fixing seat.

4. The double-sided coating apparatus according to claim 1, characterized in that, The first height adjustment assembly also includes an adjusting nut, an adjusting screw, and an adjusting handle. A movable guide block and a fixed screw limiting block are provided in the lower dovetail groove. One end of the adjusting screw is connected to the adjusting handle, and the other end of the adjusting screw is inserted into the lower dovetail groove and connected to the guide block. The adjusting nut is located at the connection between the lower dovetail groove and the adjusting screw.

5. The double-sided coating apparatus according to claim 1, characterized in that, The top of the second height adjustment component is provided with a second bearing seat, and the second bearing seat is provided with a second bearing. The end of the support rod is sleeved in the second bearing.

6. The double-sided coating apparatus according to claim 1, characterized in that, The adjustment mechanism includes an air flotation support groove, which can form a high-density air film to support the support bar. The position of the support bar can be adjusted by adjusting the amount of air supplied to the air flotation support groove.

7. A double-sided coating apparatus according to claim 6, characterized in that, It also includes several arc-shaped air flotation plates. The first arc-shaped air flotation plate, which is set along the foil conveying direction, is located above the coating lip, and the remaining arc-shaped air flotation plates are arranged alternately behind the coating lip.

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