Off-roller extrusion coating machine

Abstract

The invention discloses a roller separation extrusion coating machine which comprises a rack, the rack is provided with a transition roller assembly, and the transition roller assembly is connected with a traction device for driving the transition roller assembly to rotate; the coating die head is positioned on one side of the transition roller assembly; the separating roller is located between the transition roller assembly and the coating die head, at least one separating roller groove is formed in the separating roller in the length direction of the separating roller, and an opening of the separating roller groove faces the coating die head. The off-roll extrusion coating machine is suitable for coating base materials of various different materials, and the problems that in the extrusion coating process, strip breaking occurs, coating is uneven, and glue or paint adheres to the surface of the off-roll are solved.

Description

Technical Field

[0001] The invention relates to the technical field of coating, in particular to an off-roll extrusion coating machine. Background Art

[0002] A coating machine is a device that coats a rolled substrate with a layer of glue, paint or ink with specific functions, dries it and then rewinds it. It is mainly used in the production of surface coating processes for films, paper, etc. Among them, the gap extrusion coating machine is a common high-precision coating method. The coating glue liquid is pressed from the feed storage device to the nozzle of the coating head through the pipeline, and the glue liquid is sprayed out from the nozzle of the coating head, thereby transferring it to the coated substrate.

[0003] A type of slot extrusion coating machine in the prior art, such as Figure 1 As shown, it includes a coating head 900 and a back roller 901. The coating head 900 is facing the back roller 901. The substrate 000 passes through the gap between the back roller 901 and the coating head 900 and moves in one direction around the back roller 901. The coating head 900 continuously or intermittently coats the coating on the substrate. However, a coating machine with this structure is prone to belt breakage problems. In order to ensure a preset thickness of the coating on the substrate 000, the gap between the coating head 900 and the back roller 901 is fixed at the factory, or is preset according to the substrate and the thickness of the coating on the substrate. However, during use, foreign particles are inevitably present in the coating in the coating head 900. If the foreign particles are greater than or equal to the gap between the coating head 900 and the back roller 901, since the coating head 900 and the back roller 901 are hard-to-hard structures, the foreign particles can easily squeeze a small hole out of the substrate 000. Since the substrate 000 is very thin, the small hole quickly becomes a large hole under the action of tension, which then causes the substrate 000 to be torn off, ultimately affecting the continuous production of the coating machine.

[0004] In order to solve the above technical problems, Figure 2As shown, Chinese patent document CN102935413A discloses a gap type extrusion coating method, an extrusion coating head and an extrusion coating machine, wherein the extrusion coating machine comprises a first roller 902 and a second roller 903, which are arranged in parallel at a predetermined distance, and the substrate passes around the first roller 902 and the second roller 903 and moves in one direction; an extrusion head 904 is provided, and the extrusion head 904 is located on the side of the substrate 000 away from the first roller and the second roller, and the slit of the extrusion head faces the surface of the substrate between the first roller 902 and the second roller 903, and the slurry is applied to the substrate 000 through the gap from the slit of the extrusion head. This extrusion coating machine structure allows particles greater than or equal to the gap between the extrusion head and the surface of the substrate to enter the gap, because there is no rigid support of the back roller behind the substrate, and the softness of the substrate itself, the particles can pass through without causing the substrate to break. Although it solves the problem of broken belts, it will cause new technical problems. Due to the diameter size of the first roller 902 and the second roller 903, there will inevitably be a large distance between the two, which makes it easy for the substrate 000 to shake or fluctuate during high-speed operation, resulting in coating streaks or uneven coating during the coating process.

[0005] In addition, in Figure 1 There is another technical problem in the above-mentioned gap extrusion coating machine. When the substrate 000 is made of non-woven fabric or other porous material, a small part of the coating or glue squeezed out from the coating head 900 will penetrate through the mesh holes on the non-woven fabric to the surface of the back roller, which will contaminate the substrate 000 on the one hand, and on the other hand, the coating or glue adhering to the surface of the back roller will further pull the substrate 000, which will eventually damage the substrate or make the coating of the substrate uneven. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides an off-roll extrusion coater which can solve the problems of belt breakage and uneven coating during the extrusion coating process.

[0007] The technical solution of the present invention is:

[0008] An off-roll extrusion coating machine, characterized in that it comprises a frame, on which are mounted:

[0009] A transition roller assembly, wherein the transition roller assembly is connected to a traction device for driving the transition roller assembly to rotate;

[0010] A coating die head, which is located on one side of the transition roller assembly;

[0011] The off-roller is located between the transition roller assembly and the coating die head, and the off-roller is provided with at least one off-roller groove along its length direction, and the opening of the off-roller groove faces the coating die head.

[0012] Furthermore, the coating die head comprises an upper die head and a lower die head, the upper die head and the lower die head are connected to form a feeding gap, the feeding gap is arranged opposite to the roller-leaving groove, and the feeding gap is perpendicular to the center axis of the roller-leaving groove.

[0013] Furthermore, the separation roller is symmetrically provided with two separation roller grooves along its length direction;

[0014] The cross section of each of the roller separation grooves is V-shaped, and both side edges of each of the roller separation grooves along the length direction of the roller separation groove are arc-shaped surfaces.

[0015] Furthermore, the width of the material transfer gap is not greater than the width of the roller groove.

[0016] Furthermore, each of the roller-release grooves has a width of 30-50 mm and a depth of 5-25 mm.

[0017] Furthermore, the coating die head is provided with a translation adjustment component for adjusting the distance between the material passing gap and the groove from the roller, which comprises:

[0018] A support platform is mounted on the frame, one end of the first slide plate is slidably connected to the support platform, and the other end of the first slide plate is connected to the driving end of the translation driving cylinder, and the coating die head is arranged on the first slide plate;

[0019] The translation driving cylinder drives the coating die head to approach or move away from the roller groove along the Y direction.

[0020] Furthermore, the coating die head is also provided with a spacing fine-tuning component, which includes:

[0021] A transfer block, a roller is provided on one side of the upper end thereof, the other side of the upper end thereof is connected to the driving end of the translation driving cylinder, and the lower end of the transfer block is fixedly connected to the first slide plate;

[0022] A first Z-direction screw assembly is arranged in a direction perpendicular to the first slide plate, a first Z-direction screw rail is arranged on the first slide plate and is parallel to the first Z-direction screw assembly, a screw nut on the first Z-direction screw assembly is fixedly connected to a wedge-shaped slider, one side of the wedge-shaped slider is slidably connected to the first Z-direction screw rail, and the other side thereof is slidably connected to the roller;

[0023] The first slide plate is also provided with a dial indicator.

[0024] Furthermore, the transition roller assembly includes an adjusting roller and a transition roller both rotatably connected to the frame, the adjusting roller is located above the separation roller, and the transition roller is located below the separation roller.

[0025] Furthermore, an angle adjustment component is provided at each end of the transition roller, and each of the angle adjustment components comprises:

[0026] A transition roller receiving plate is fixed on the frame, and each transition roller receiving plate is provided with a first Y-direction screw assembly.

[0027] An L-shaped bracket, wherein the upper end of each bracket is slidably connected to the second Z-direction screw assembly, each of the second Z-direction screw assembly is connected to a bracket connecting plate, and each bracket connecting plate is slidably connected to the first Y-direction screw assembly;

[0028] One end of the transition roller is rotatably connected to the lower end of one bracket, and the other end of the transition roller is rotatably connected to the lower end of another bracket.

[0029] Furthermore, the adjusting roller is connected with a horizontal adjustment component for adjusting the horizontal direction of the adjusting roller.

[0030] The beneficial technical effects of the present invention are:

[0031] Compared with the extrusion coating machine in the prior art, a separation roller is provided on the coating die head and the transition roller assembly, and a separation roller groove is provided on the separation roller, and the transition roller assembly includes an adjusting roller rotatably arranged obliquely above the separation roller and a transition roller rotatably arranged below the separation roller; since the separation roller is arranged between the adjusting roller and the transition roller, support is provided for the substrate during operation, which can effectively avoid the shaking or shaking of the substrate during operation, thereby avoiding the generation of coating streaks or uneven coating during the extrusion coating process; further, a separation roller groove is provided on the separation roller; the width of the material transfer gap is smaller than the groove width of the separation roller groove, and the material transfer gap is arranged perpendicular to the center axis of the separation roller groove, so that when extrusion coating is performed, if the coating contains foreign particles, the foreign particles will extrude the substrate into the separation roller groove to prevent the foreign particles from hard collision with the substrate, thereby avoiding the foreign particles from scratching the substrate and causing the problem of belt breakage.

[0032] In addition, when the substrate to be coated is a non-woven fabric or other porous material, if the coating or glue squeezed out by the coating head partially penetrates through the mesh holes on the non-woven fabric, the penetrated coating or glue will be accommodated in the groove of the roller, thereby avoiding the coating or glue sticking to the surface of the roller, and ultimately avoiding contamination of the substrate, or avoiding the surface of the roller sticking to and pulling the substrate, causing damage to the substrate and uneven coating, thereby increasing the range of substrate materials applicable to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of an existing extrusion coating machine;

[0034] Figure 2 It is a schematic diagram of the structure of another existing extrusion coating machine;

[0035] Figure 3 is an overall schematic diagram of an extrusion coating machine of the present invention;

[0036] Figure 4 It is a schematic diagram of the extrusion coating machine of the present invention from another angle;

[0037] Figure 5 yes Figure 4 AA section view;

[0038] Figure 6 This is a schematic diagram of the substrate in the coating machine (the direction of the arrow is the running direction);

[0039] Figure 7 It is an assembly diagram of the coating die head and the translation adjustment component of the present invention;

[0040] Figure 8 This is an enlarged schematic diagram of the transfer block;

[0041] Fig. 9 It is a schematic diagram of the assembly of the wrap angle adjustment component and the transition roller;

[0042] Fig.10 It is a schematic diagram of the assembly of the off-roller and the off-roller mounting seat;

[0043] Fig.11 Schematic diagram of the roller.

[0044] in:

[0045] 000-substrate, 100-frame; 200-transition roller assembly, 201-adjusting roller, 202-transition roller; 300-coating die head, 301-upper die head, 302-lower die head, 303-feeding gap; 400-off roller, 401-off roller groove, 402-off roller mounting seat, 4031-positioning ring, locking screw 4032;

[0046] 500-translation adjustment assembly, 501-support table, 502-translation drive cylinder, 503-first slide plate, 504-die head bearing plate, 505-support bin; 601-adapter block, 6011-roller, 602-first Z-direction screw assembly, 6021-first Z-direction screw rail, 6022-wedge-shaped slider, 603-micrometer, 6041-Z-shaped limit block, 6042-L-shaped limit block;

[0047] 700-wrapped angle adjustment assembly, 701-transition roller receiving plate, 702-first Y-axis screw assembly, 703-bracket, 7031-bracket connecting plate, 704-second Z-axis screw assembly; 800-horizontal adjustment assembly; 900-coating head, 901-back roller, 902-first passing roller, 903-second passing roller, 904-extrusion head. DETAILED DESCRIPTION

[0048] In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0049] See also Figure 3-Figure 11 The present invention provides a roll-off extrusion coating machine, which is suitable for the extrusion coating process of substrates 000 of various materials. Applicable substrates 000 include, for example, film materials, paper materials, non-woven fabric materials, and substrates with holes. The coating machine of the present invention includes a frame 100, which is a frame structure to provide a mounting base for other components. A transition roller assembly 200, a roll-off roller 400, and a coating die head 300 are installed on the frame 100.

[0050] The off-roller 400 is horizontally mounted on the frame 100 along its length direction and is disposed between the coating die head 300 and the transition roller assembly 200. The off-roller 400 is a cylinder, which includes an off-roller body and cylindrical mounting portions located at two top ends of the off-roller body, and the diameter of the off-roller mounting portion is smaller than the diameter of the off-roller body. The mounting portions at both ends of the off-roller 400 are respectively inserted into the off-roller mounting seats 402, and the off-roller mounting seats 402 are fixedly connected to the frame 100 or detachably connected by bolt fasteners.

[0051] In addition, in order to further prevent the roller 400 from shaking or rotating, a positioning assembly is further provided on one of the roller mounting seats 402, and the positioning assembly includes a positioning ring 4031 and a locking screw 4032. The upper end of the positioning ring 4031 is fixed to the roller mounting seat 402, and the lower end thereof is a ring sleeve with an opening, and threaded holes for the locking screw 4032 to pass through are respectively provided on both sides of the opening. After the mounting portion at one end of the roller 400 passes through the ring sleeve, it is inserted into the roller mounting seat 402, and then the locking screw 4032 is rotated to tighten the opening of the positioning ring 4031, thereby locking the roller 400 to prevent it from rotating and shifting.

[0052] Furthermore, in order to improve the hard-to-hard contact structure between the coating die head 300 and the off-roller 400 and provide a floating space for foreign particles, thereby preventing the substrate 000 from breaking, a off-roller groove 401 is opened on the off-roller body of the off-roller 400 along its length direction, and the off-roller groove 401 runs through both ends, and the opening direction of the off-roller groove 401 is set away from the central axis.

[0053] In addition, when the substrate 000 is a non-woven fabric or other porous structural material, since the non-woven fabric or other porous structural material has more microporous structures, when coating or glue is applied on the non-woven fabric, a portion of the coating or glue will be accommodated into the off-roll groove 401 through the micropores on the non-woven fabric, thereby avoiding the coating or glue from contaminating the surface of the off-roll 400, and then avoiding the off-roll 400 with the coating or glue adhering to contaminating the substrate 000, and also avoiding the off-roll 400 with the coating or glue adhering to further adhere to and pull the substrate 000, which ultimately leads to damage to the substrate or uneven coating of the substrate.

[0054] There is no particular limitation on the shape of the off-roller groove 401, for example, it can be a trapezoid, triangle, rectangle, V-shape, etc. The cross-sectional shape of the off-roller groove 401 of the present invention is approximately V-shaped; in addition, the groove width and groove depth of the off-roller groove 401 must be compatible with the size of the impurity particles or air particles, but both sizes should not be too large. If the groove width is too large, the substrate is prone to shaking during operation, and if the groove depth is too large, it is not conducive to the stability of the off-roller structure. In the present invention, the groove width W of the off-roller groove 401 is 40 mm, and the groove depth D is 20 mm.

[0055] In addition, in order to improve the utilization efficiency of the separation roller 400, two separation roller grooves 401 are symmetrically opened on the separation roller body of the separation roller 400.

[0056] The coating die 300 is parallel to the roller 400 and installed on one side of the roller 400. The coating die 300 includes an upper die 301 and a lower die 302. The upper die 301 and the lower die 302 are connected to form a feed gap 303 with a conical cross section. The feed gap 303 is arranged opposite to the roller groove 401, and the width of the feed gap 303 is not greater than the groove width W of the roller groove 401. The substrate 000 passes through the gap between the feed gap 303 and the roller groove 401. The coating die 300 is connected to a feed storage (not shown) through a pipeline. The coating glue is pressed from the feed storage to the feed gap 303 of the coating die 300 through the pipeline, and the coating glue is squeezed out from the feed gap 303, thereby transferring to the substrate 000 to be coated.

[0057] In order to be applicable to substrates of different materials and requirements of different coating processes, a translation adjustment component 500 is respectively installed on both ends of the coating die head 300. The two translation adjustment components 500 jointly drive the coating die head 300 to approach or move away from the roller groove 401 along the Y-axis direction to meet the requirements of different coating processes. However, the extrusion coating machine is a high-precision coating method, and the coating thickness is relatively thin. Therefore, the gap size between the material gap 303 and the roller groove 401 needs to be accurately and finely controlled. Therefore, a spacing fine-tuning component is also installed on both ends of the coating die head 300.

[0058] Each translation adjustment assembly 500 includes a support platform 501, a translation drive cylinder 502 and a first slide plate 503. Each spacing fine-tuning assembly includes an adapter block 601, a first Z-axis screw assembly 602, a first Z-axis screw rail 6021, a wedge-shaped slider 6022 and a micrometer 603; wherein, a roller 6011 is rotatably connected to one side surface of the upper end of the adapter block 601. The connection mode and operation mode of the translation adjustment assembly 500 and the spacing fine-tuning assembly at both ends of the coating die head 300 are the same. For the convenience of description, the connection mode and operation mode of the translation adjustment assembly 500 and the spacing fine-tuning assembly at one end of the coating die head 300 are used for explanation.

[0059] The support platform 501 is a box structure, which is fixed on the frame 100. The first slide 503 is slidably connected to the support platform 501 along the Y direction. The lower end of the adapter block 601 is fixed to the first slide 503. The upper end of the adapter block 601 and the side away from the roller 6011 are connected to the driving end of the translation drive cylinder 502. The coating die 300 is fixed to the die carrier plate 504, and the die carrier plate 504 is placed on the end of the first slide 503 away from the adapter block 601. In order to provide support for the first Z-axis screw rod assembly 602, a support bin 505 with an accommodating space is also provided on the frame 100 and above the support platform 501. The support bin 505 is a box body with an opening facing the support platform 501. The driving end of the above-mentioned translation drive cylinder 502 and the adapter block 601 are both located in the support bin 505. The first Z-axis screw rod assembly 602 converts rotational motion into linear motion, which is a prior art and will not be described in detail here. The first Z-axis screw assembly 602 passes through the upper baffle of the support bin 505 along the Z-axis and stops inside the support bin 505. The first Z-axis screw rail 6021 is parallel to the first Z-axis screw assembly 602 and is fixed on the support bin 505. A wedge-shaped slider 6022 is connected to the screw nut on the first Z-axis screw assembly 602. The wedge-shaped slider 6022 is a rectangular block, and one side of the wedge-shaped slider has a wedge-shaped surface, which is slidably connected to the above-mentioned roller 6011, and the other side of the wedge-shaped slider 6022 opposite to its wedge-shaped surface is slidably connected to the first Z-axis screw rail 6021. The micrometer 603 is arranged on the support platform 501.

[0060] Furthermore, a lower limit assembly is also provided on the spacing fine-tuning assembly, and the lower limit assembly includes a Z-shaped limit block 6041 connected to the wedge-shaped slider 6022 and an L-shaped limit block 6042 provided on the bottom surface of the support bin 505 and on the same side as the first Z-axis screw rail 6021. When the first Z-axis screw assembly 602 is rotated, the wedge-shaped slider 6022 is driven to move downward along the Z-axis. When the Z-shaped limit block 6041 abuts against the L-shaped limit block 6042, the wedge-shaped slider 6022 is driven to slide to the lowest point to prevent it from touching other components.

[0061] When it is necessary to adjust the gap between the feed gap 303 and the roller groove 401, first start the translation drive cylinder 502 to drive the coating die head 300 to move away from or close to the roller groove 401 in the Y direction, and the coating die head 300 initially reaches the preset position, and then observe the micrometer 603. According to the feedback of the micrometer 603, rotate the first Z-axis screw assembly 602 to drive the wedge-shaped slider 6022 to slide upward or downward along the first Z-axis screw slide rail 6021. At the same time, by utilizing the different widths of the upper and lower ends of its wedge-shaped surface, during the up and down sliding process, through the roller 6011 slidingly connected thereto, it drives the first slide plate 503 and the coating die head 300 on the first slide plate 503 to generate a thrust for moving along the Y direction, and then causes the coating die head 300 to move in a small range in the Y direction, thereby achieving the purpose of accurately adjusting the gap size between the feed gap 303 and the roller groove 401.

[0062] The transition roller assembly 200 is arranged on the side of the off-roller 400 away from the coating die head 300. The transition roller assembly 200 is a transmission assembly for the substrate 000 to move, and a traction device is connected to it to drive it to rotate. The transition roller assembly 200 includes an adjustment roller 201 located above the off-roller 400 and a transition roller 202 located below the off-roller 400. The traction device includes a substrate unwinding mechanism (not shown) connected to the adjustment roller 201 and a substrate winding mechanism (not shown) connected to the transition roller 202. The adjustment roller 201 and the transition roller 202 have the same rotation direction. Figure 6 As shown, the substrate 000 is wound in from the adjustment roller 201, bypasses the gap between the feeding gap 303 and the roller groove 401, and then winds out from the transition roller 202 in the same direction, and the surface of the substrate located at the opening of the roller groove 401 is perpendicular to the feeding gap 303.

[0063] Specifically, the adjusting roller 201 is parallel to the separation roller 400 and is disposed obliquely above the separation roller 400, and its wrap angle is set to be greater than 30°. In addition, the adjusting roller 201 is also provided with a horizontal adjustment component 800 for adjusting its horizontal direction. The horizontal adjustment component 800 includes two screw rod components, one of which is fixed on the frame 100 along the Z direction, and the other screw rod component is fixed on the frame 100 along the Y direction. The two ends of the adjusting roller 201 are respectively rotatably connected to the above two screw rod components. When the screw rod component arranged along the Z direction is rotated, one end of the adjusting roller 201 connected thereto moves along the Z direction. When the screw rod component arranged along the Y direction is rotated, the other end of the adjusting roller 201 connected thereto moves along the Y direction, so that the adjusting roller 201 is parallel to the horizontal direction.

[0064] The transition roller 202 is parallel to the departure roller 400 and is arranged below the departure roller 400. Both ends of the transition roller 202 are provided with wrap angle adjustment components for adjusting the wrap angle of the substrate 000 when it is wound out and the winding mechanism. Each wrap angle adjustment component includes a transition roller receiving plate 701, a first Y-direction screw assembly 702, an L-shaped bracket 703, a bracket connecting plate 7031 and a second Z-direction screw assembly 704. The connection mode and operation mode of the wrap angle adjustment components corresponding to the two ends of the transition roller 202 are the same. For the convenience of description, the connection mode and operation mode of the flat wrap angle adjustment component at one end of the transition roller 202 are used for explanation.

[0065] The transition roller receiving plate 701 is fixed to the frame 100, and the first Y-axis screw assembly 702 is arranged on the transition roller receiving plate 701 along the Y-axis direction; the upper end of the bracket 703 is slidably connected to the second Z-axis screw assembly 704, and the second Z-axis screw assembly 704 is connected to the bracket connecting plate 7031, and the bracket connecting plate 7031 is slidably connected to the first Y-axis screw assembly 702, and one end of the transition roller 202 is rotatably connected to the lower end of the bracket 703, and the other end of the transition roller 202 is rotatably connected to the lower end of another bracket 703. When it is necessary to adjust the wrap angle between the substrate 000 and the transition roller 202, the first Y-axis screw assembly 702 is rotated, thereby driving the second Z-axis screw assembly 704 and the transition roller 202 to move closer to or away from the roller 400 along the Y direction, and then the second Z-axis screw assembly 704 is rotated to drive the transition roller 202 to move closer to or away from the roller 400 along the Z direction, thereby achieving the preset wrap angle size.

[0066] The operation process of the present invention is as follows:

[0067] When the substrate 000 is a film or a material without mesh holes on the surface:

[0068] Start the translation adjustment component 500 to drive the coating die head 300 to run to the preset position and fix the coating distance between the feeding gap 303 and the off-roller groove 401; the adjusting roller 201 and the transition roller 202 rotate in the same direction driven by the traction device, and the substrate 000 is wound in from the adjusting roller 201, coated on the surface of the off-roller 400, and then bypasses the gap between the feeding gap 303 and the off-roller groove 401, and is coated on the surface of the off-roller groove 401. At the same time, the feeding gap 303 is at the off-roller groove 401, and the coating is extruded and coated on the substrate 000 perpendicularly to the surface of the substrate 000. If there are foreign particles in the coating at this time, the foreign particles squeeze the substrate 000 into the off-roller groove 401 to prevent the foreign particles from hard collision with the substrate 000, thereby avoiding the foreign particles from scratching the substrate 000 and causing the problem of broken belt; finally, the substrate 000 coated with the coating is wound out from the transition roller 202 in the same direction.

[0069] When the substrate 000 is a non-woven fabric or a material with mesh on the surface:

[0070] The translation adjustment component 500 is started to drive the coating die head 300 to run to the preset position, fixing the coating distance between the feeding gap 303 and the roller groove 401; the adjusting roller 201 and the transition roller 202 rotate in the same direction under the drive of the traction device, and the substrate 000 is wound around the adjusting roller 201, coated on the surface of the roller 400, and then bypasses the gap between the feeding gap 303 and the roller groove 401, and is coated on the surface of the roller groove 401. At the same time, the feeding gap 303 is at the roller groove 401, and The coating is extruded and coated on the substrate 000 perpendicularly to the surface of the substrate 000. If there are foreign particles in the coating at this time, the foreign particles will squeeze the substrate 000 into the roller groove 401 to prevent the foreign particles from hard collision with the substrate 000, thereby avoiding the foreign particles from scratching the substrate 000 and causing the belt breakage problem; if a part of the coating penetrates through the non-woven fabric or the material with mesh on the surface at this time, the penetrated coating will be accommodated in the roller groove 401, and finally, the substrate 000 coated with the coating will be wound out from the transition roller 202 in the same direction.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A roll-off extrusion coater, characterized in that: It comprises a frame (100), on which is mounted: A transition roller assembly (200), wherein the transition roller assembly (200) is connected to a traction device for driving the transition roller assembly (200) to rotate; A coating die head (300), which is located on one side of the transition roller assembly (200); A separation roller (400); located between the transition roller assembly (200) and the coating die head (300), the separation roller (400) is provided with at least one separation roller groove (401) along its length direction, and the opening of the separation roller groove (401) faces the coating die head (300).

2. The off-roll extrusion coater according to claim 1, characterized in that: The coating die (300) comprises an upper die (301) and a lower die (302), wherein the upper die (301) and the lower die (302) are connected to form a feeding gap (303), wherein the feeding gap (303) is arranged opposite to the roller-leaving groove (401), and the feeding gap (303) is perpendicular to the central axis of the roller-leaving groove (401).

3. The off-roll extrusion coater according to claim 2, characterized in that: The separation roller (400) is symmetrically provided with two separation roller grooves (401) along its length direction; The cross section of each of the roller separation grooves (401) is V-shaped, and both side edges of each of the roller separation grooves (401) along the roller separation length direction are arc-shaped surfaces.

4. The off-roll extrusion coating machine according to claim 3, characterized in that: The width of the material transfer gap (303) is not greater than the width of the roller separation groove (401).

5. The off-roll extrusion coater according to claim 4, characterized in that: Each of the roller-off grooves (401) has a width of 30-50 mm and a depth of 5-25 mm.

6. The off-roll extrusion coating machine according to claim 2, characterized in that: The coating die head (300) is provided with a translation adjustment component (500) for adjusting the distance between the material feeding gap (303) and the roller groove (401), which comprises: A support platform (501) is mounted on the frame (100), one end of a first slide plate (503) is slidably connected to the support platform (501), and the other end of the first slide plate is connected to the driving end of the translation driving cylinder (502), and the coating die head (300) is arranged on the first slide plate (503); The translation driving cylinder (502) drives the coating die head (300) to approach or move away from the roller groove (401) along the Y direction.

7. The off-roll extrusion coater according to claim 6, characterized in that: The coating die head (300) is also provided with a spacing fine-tuning component, which comprises: The adapter block (601) has a roller (6011) on one side of its upper end, and the other side of its upper end is connected to the driving end of the translation driving cylinder (502), and the lower end of the adapter block (601) is fixedly connected to the first slide plate (503); A first Z-direction screw assembly (602) is arranged in a direction perpendicular to the first slide plate (503); a first Z-direction screw rail (6021) is arranged on the first slide plate (503) and is parallel to the first Z-direction screw assembly (602); a screw nut on the first Z-direction screw assembly (602) is fixedly connected to a wedge-shaped slider (6022); one side of the wedge-shaped slider (6022) is slidably connected to the first Z-direction screw rail (6021), and the other side of the wedge-shaped slider is slidably connected to the roller (6011); The first slide plate (503) is also provided with a dial gauge (603).

8. The off-roll extrusion coater according to claim 1, characterized in that: The transition roller assembly (200) comprises an adjusting roller (201) and a transition roller (202) both rotatably connected to the frame (100); the adjusting roller (201) is located above the separation roller (400), and the transition roller (202) is located below the separation roller (400).

9. The off-roll extrusion coating machine according to claim 8, characterized in that: An angle adjustment component (700) is provided at each end of the transition roller (202), and each angle adjustment component (700) comprises: A transition roller receiving plate (701) is fixedly mounted on the frame (100), and each transition roller receiving plate (701) is provided with a first Y-direction screw rod assembly (702). An L-shaped bracket (703), the upper end of each bracket (703) being slidably connected to the second Z-direction screw assembly (704), each second Z-direction screw assembly (704) being connected to a bracket connecting plate (7031), and each bracket connecting plate (7031) being slidably connected to the first Y-direction screw assembly (702); One end of the transition roller (202) is rotatably connected to the lower end of a bracket (703), and the other end of the transition roller (202) is rotatably connected to the lower end of another bracket (703).

10. The off-roll extrusion coater according to claim 8, characterized in that: The adjusting roller (201) is connected to a horizontal adjustment component (800) for adjusting the horizontal direction of the adjusting roller (201).

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