Coating device

Abstract

The invention discloses a coating device. The coating device comprises a coating roller, a flow guide plate, two glue blocking plates and two adjusting assemblies. The coating roller is used for conveying a base material. The flow guide plate is arranged on one side of the coating roller, and a gap for conveying the base material is formed between the flow guide plate and the coating roller. The two glue blocking plates are arranged at the two ends of the coating roller, and the two glue blocking plates and the flow guide plate jointly define a material groove for containing glue liquid. The two adjusting assemblies are arranged on the back-to-back outer sides of the two glue blocking plates correspondingly and used for abutting against the glue blocking plates so that the glue blocking plates can be tightly attached to the end of the coating roller and the end of the flow guide plate at the same time. According to the coating device, the two sets of adjusting assemblies abut against the glue blocking plate from the side edges correspondingly, the pressing degree of the glue blocking plate and the coating roller and the pressing degree of the glue blocking plate and the guide plate are adjusted conveniently, glue leakage is avoided, the coating consistency is guaranteed, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of automation equipment, and particularly relates to a coating device for uniformly coating glue solution on a sheet-shaped substrate. BACKGROUND

[0002] In the glue coating process, the glue solution is uniformly and stably coated on the surface of the substrate by the coating roller in a predetermined thickness and width, which is a core technical link for ensuring the quality of the coating layer, the material performance and the production efficiency. At present, in the design of the commonly used equipment in the industry, a modular design scheme is adopted in which the glue blocking plate is separated from the coating roller to realize process flexibility. That is, the glue blocking plate is an independent detachable part, and its position can be adjusted and fixed horizontally within a certain range according to the required coating width. The core advantage of this split type design lies in its good adaptability, which allows the same coating unit to adapt to substrates of different widths by quickly replacing or adjusting the glue blocking plate, thereby improving the versatility of the equipment.

[0003] However, in the actual continuous production process, glue solution will leak from between the coating roller and the glue blocking plate. The leaked glue solution will migrate axially along the coating roller and form irregular and difficult-to-control residual glue layers outside the coating area that subsequently contacts the substrate. Not only does this directly destroy the uniformity and edge definition in the width direction of the coating layer, affecting the consistency of the product appearance and performance, but it also causes waste of expensive glue solution material, increasing production costs and the burden of subsequent cleaning and maintenance. SUMMARY

[0004] To solve the technical problems existing in the prior art, the present application provides a coating device that avoids glue leakage.

[0005] To achieve the above-mentioned purpose, the coating device of the present application comprises: a coating roller for conveying the substrate; a flow guide plate arranged on one side of the coating roller and forming a gap for conveying the substrate between the coating roller and the flow guide plate; two glue blocking plates arranged at the two ends of the coating roller and jointly enclosing a glue solution containing groove with the flow guide plate; two groups of adjusting assemblies arranged on the outer sides of the two glue blocking plates respectively, for pushing the glue blocking plates, so that the glue blocking plates are tightly attached to the end of the coating roller and the end of the flow guide plate at the same time.

[0006] In an embodiment of the coating device of the present application, the adjusting assembly comprises a fixed plate, a movable plate and a driving member, the fixed plate and the movable plate are connected by a plurality of guide shafts, the driving member is arranged on the fixed plate, the driving end of the driving member is connected with the movable plate to drive the movable plate to slide along the axial direction of the guide shaft, and a plurality of adjusting bolts for pushing the glue blocking plate are arranged on the movable plate.

[0007] In one embodiment of the coating apparatus of the present invention, the driving component includes a lead screw, a bearing, a handle, and a locking component. The lead screw is mounted on the fixed plate via the bearing. One end of the lead screw is connected to the handle, and the other end passes through the movable plate and is rotatably connected to the movable plate. The locking component is sleeved on the lead screw and mounted on the fixed plate.

[0008] In one embodiment of the coating apparatus of the present invention, the driving component includes a lead screw, a bearing, and a rotary motor. The lead screw is mounted on the fixed plate via the bearing. One end of the lead screw is connected to the output shaft of the rotary motor, and the other end passes through the movable plate and is rotatably connected to the movable plate.

[0009] In one embodiment of the coating apparatus of the present invention, the guide plate has grooves at both ends along its width direction, the coating roller has mounting grooves extending along its circumference at both ends, and the two sides of the baffle plate abut against the corresponding grooves and mounting grooves.

[0010] In one embodiment of the coating apparatus of the present invention, the chute has a first sidewall, the mounting groove has a second sidewall, one side surface of the guide plate abuts against both the first sidewall and the second sidewall, and the other side surface of the guide plate abuts against the adjustment assembly.

[0011] In one embodiment of the coating apparatus of the present invention, the baffle plate is triangular, the side of the baffle plate that abuts against the mounting groove is an arc surface, and the side of the baffle plate that abuts against the sliding groove is a flat surface.

[0012] In one embodiment of the coating apparatus of the present invention, the adhesive baffle is slidably installed in the groove by a fixing block, the fixing block can drive the adhesive baffle to slide along the extension direction of the groove to move closer to or away from the mounting groove, and the adjusting component directly abuts against the fixing block.

[0013] In one embodiment of the coating apparatus of the present invention, the guide plate is provided with a first positioning plate at both ends along its width direction, and a plurality of first set screws are provided through the first positioning plate. The first set screws press against the fixing block, thereby pressing the glue baffle against the first sidewall of the chute.

[0014] In one embodiment of the coating apparatus of the present invention, a second positioning plate is provided at the end of the guide plate away from the coating roller and at a position corresponding to the chute. A plurality of second set screws are provided through the second positioning plate, and the second set screws press against the fixing block, thereby pressing the glue baffle plate into the mounting groove.

[0015] In summary, the coating apparatus of the present invention uses two sets of adjustment components to press the glue baffle plate from the side, which facilitates the adjustment of the pressure between the glue baffle plate and the coating roller and guide plate, avoids glue leakage, ensures coating consistency and reduces costs. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the first embodiment of the present invention;

[0017] Figure 2 yes Figure 1 Remove the exploded view of a group of adjustment components;

[0018] Figure 3 yes Figure 1 Structural diagram of the regulating component;

[0019] Figure 4 This is a structural diagram from another angle;

[0020] Figure 5 This is a structural diagram of the second embodiment of the present invention;

[0021] In the diagram: 100, base; 110, bracket; 200, coating roller; 210, mounting groove; 211, second sidewall; 300, guide plate; 310, chute; 311, first sidewall; 320, first positioning plate; 321, first set screw; 330, second positioning plate; 331, second set screw; 400, baffle plate; 410, fixing block; 500, adjusting assembly; 510, fixing plate; 520, movable plate; 530, guide shaft; 540, driving component; 541, lead screw; 542, bearing; 543, handle; 544, locking component; 545, rotary motor; 550, adjusting bolt. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention. First Embodiment

[0023] like Figure 1 As shown, the coating apparatus includes a base 100 serving as a mounting base. A coating roller 200 is rotatably mounted above one side of the base 100 via journals at both ends, for applying adhesive to a continuously passing substrate. A guide plate 300 is provided on one side of the coating roller 200. Specifically, the guide plate 300 is mounted on the base 100 via an adjustable bracket 110, allowing the tilt angle of the guide plate 300 to be adjusted. A gap is formed between the surface of the guide plate 300 and the surface of the coating roller 200 for substrate transport.

[0024] At each end of the coating roller 200, a baffle plate 400 is provided. Specifically, as shown... Figure 2 As shown. Each end of the coating roller 200 has a mounting groove 210 extending along its circumference. The guide plate 300 has a sliding groove 310 at each end along the width direction of the substrate (i.e., parallel to the axis of the coating roller 200). A baffle plate 400 is disposed within the space enclosed by the sliding grooves 310 and the mounting grooves 210, with its two sides abutting against the corresponding sliding grooves 310 and mounting grooves 210. These two baffle plates 400, together with the guide plate 300 located in the middle, form a material trough with an open top, used to hold the adhesive to be coated. The baffle plate 400 is slidably mounted within the sliding groove 310 via a fixing block 410.

[0025] The adhesive baffle 400 has a triangular cross-section perpendicular to the axial direction of the coating roller 200. This shape design is key to its efficient sealing. Specifically, the side of the adhesive baffle 400 facing the mounting groove 210 of the coating roller 200 is machined into an arc surface that matches the curvature of the end surface of the coating roller 200. This arc surface can achieve a large-area, linear, and tight fit with the mounting groove 210, thereby effectively blocking the path of adhesive leakage from the roller end. At the same time, the side of the adhesive baffle 400 facing the slide groove 310 of the guide plate 300 is a flat plane, which contacts the surface of the slide groove 310, ensuring a seal at the guide plate 300. The triangular structure, while ensuring the necessary structural strength, minimizes the contact area and frictional resistance with the adhesive, which is conducive to the smooth flow of adhesive and makes the adjustment of the adhesive baffle 400 easier and more precise. The shape of the baffle plate 400 and the matching shape of the fixing block 410 together form a stable and reliable sealing module. The two are fixedly connected by bolts or integrally formed, so that the fixing block 410 can drive the baffle plate 400 to move within the slide groove 310 to approach or move away from the mounting groove 210 of the coating roller 200.

[0026] To precisely control the position of the baffle plates 400 and provide continuous sealing pressure, an adjusting assembly 500 is provided on the opposite outer sides of each of the two baffle plates 400 (specifically, their fixing blocks). Both sets of adjusting assemblies 500 are also fixedly mounted on the base 100. Figure 3 , Figure 4As shown, each adjustment assembly 500 includes: a fixed plate 510 fixed on the base 100; a movable plate 520 parallel to the fixed plate 510, the fixed plate 510 and the movable plate 520 being slidably connected by multiple guide shafts 530; and a driving member 540. The driving member 540 is disposed on the fixed plate 510, and its driving end is connected to the movable plate 520. In this embodiment, the driving member 540 specifically includes: a lead screw 541, which is rotatably mounted on the fixed plate 510 via a bearing 542; a manually operated handle 543 connected to one end of the lead screw 541; and a locking member 544, sleeved on the lead screw 541 and mounted on the fixed plate 510, for locking the lead screw 541. The other end of the lead screw 541 passes through the movable plate 520 and is rotatably connected to the movable plate 520 via a threaded pair or a bearing. When the handle 543 is turned, the rotational motion of the lead screw 541 drives the movable plate 520 to slide along the axial direction of the guide shaft 530.

[0027] At least three adjusting bolts 550 are provided on the side of the movable plate 520 facing the baffle plate 400. The ends of these adjusting bolts 550 press against the fixed block 410. Preferably, at least three adjusting bolts 550 press against the three corner areas of the fixed block 410 respectively, thereby forming a stable triangular support structure. This structure ensures that the fixed block 410 is subjected to uniform force and allows the operator to finely adjust the extension length of each adjusting bolt 550 to correct the posture of the baffle plate 400.

[0028] Refer again Figure 2 As shown, to further lock the lateral position of the baffle plate 400 within the chute 310, first positioning plates 320 are fixed at both ends of the guide plate 300 along the width direction of the substrate. Multiple first set screws 321 are provided through the first positioning plates 320 along the width direction of the substrate. The ends of the first set screws 321 press against the fixing block 410, thereby pressing the baffle plate 400 against the inner sidewall (first sidewall 311) of the chute 310 and the inner sidewall (second sidewall 211) of the mounting groove 210. Similarly, a second positioning plate 330 is provided at the end of the guide plate 300 away from the coating roller 200, corresponding to the chute 310. Multiple second set screws 331 are provided through the second positioning plate 330. The ends of the second set screws 331 press against the fixing block 410, thereby pressing the baffle plate 400 against the sidewall of the mounting groove 210 of the coating roller 200.

[0029] In addition, a heating element can be integrated into the guide plate 300 to prevent the adhesive from solidifying in the tank.

[0030] Operation and Working Process: The operator drives the movable plate 520 forward by turning the handle 543, which in turn drives the adjusting bolt 550 to push the fixed block 410 and the glue baffle 400, making the glue baffle 400 tightly fit against the second side wall 211 of the coating roller 200 and the first side wall 311 of the guide plate 300, forming an initial seal. Subsequently, the three adjusting bolts 550 can be finely adjusted to ensure uniform pressure on the sealing surface. After adjustment, the locking part 544 on the screw 541 and the set screw on the positioning plate are tightened to fix the position. During operation, the adhesive is pumped into the material trough formed by the two glue baffles 400 and the guide plate 300. When it is necessary to replace the glue baffle 400 with a different width, the locking part 544 and the set screw are loosened, and the handle 543 is turned in the opposite direction to retract the adjusting component 500. The glue baffle 400 and the fixed block 410 can then be removed from the slide 310 as a whole module for replacement, realizing the quick replacement of the glue baffle 400. Second Embodiment

[0031] This embodiment provides an automatically adjusting coating device, whose overall mechanical structure is basically the same as that of the first embodiment, the main difference being the driving method and control logic of the adjusting component 500.

[0032] The difference between drive and control: such as Figure 5 As shown, in this embodiment, the driving component 540 of the adjustment assembly 500 includes: a lead screw 541, which is mounted on the fixed plate 510 via a bearing 542; and a rotary motor 545 (such as a servo motor), the body of which is mounted on the fixed plate 510 or the base 100, and the output shaft is connected to one end of the lead screw 541. The other end of the lead screw 541 also passes through the movable plate 520 and forms a rotatable connection thereto.

[0033] The key improvement in this embodiment is the introduction of pressure feedback closed-loop control. Pressure sensors are integrated on at least three adjusting bolts 550 of the movable plate, or on the contact surface of the fixing block 410 corresponding to the bolt ends, to detect the pushing force of each adjusting bolt 550 on the fixing block 410 in real time.

[0034] Intelligent control process: The rotary motor 545 and all pressure sensors are electrically connected to a central controller. During operation, the operator sets the target pressure threshold on the controller. The controller instructs the rotary motor 545 to operate, driving the movable plate 520 and adjusting bolt 550 forward as a whole until the pressure value fed back by the pressure sensors reaches the set range. In subsequent continuous production, the controller continuously monitors the values ​​of each pressure sensor. If the pressure at a certain point fluctuates due to thermal expansion, vibration, or wear of the coating roller, the controller will immediately calculate and instruct the corresponding rotary motor 545 to rotate the fine-tuning screw 541, dynamically adjusting the extension of the screw 541 to stabilize the pressure value within the set range, thereby achieving dynamic closed-loop adjustment of the sealing pressure. This design ensures the absolute reliability of the seal during long-term operation and can provide early warning of wear conditions. The quick replacement function of the baffle plate 400 is the same as in the first embodiment.

[0035] The above are only some or preferred embodiments of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A coating apparatus, characterized in that, include: Coating rollers are used to convey substrates; A guide plate is disposed on one side of the coating roller, forming a gap between the guide plate and the coating roller for conveying the substrate; Two baffles are disposed at both ends of the coating roller, and together with the guide plate, they form a trough for receiving the adhesive liquid; Two sets of adjustment components are respectively disposed on the outer sides of the two back-to-back glue baffles to push the glue baffles so that the glue baffles are in close contact with the ends of the coating roller and the ends of the guide plate at the same time.

2. The coating apparatus as described in claim 1, characterized in that, The adjustment assembly includes a fixed plate, a movable plate, and a driving component. The fixed plate and the movable plate are slidably connected by multiple guide shafts. The driving component is disposed on the fixed plate, and its driving end is connected to the movable plate to drive the movable plate to slide along the axial direction of the guide shaft. The movable plate is also provided with multiple adjusting bolts for pushing against the baffle plate.

3. The coating apparatus as described in claim 2, characterized in that, The driving component includes a lead screw, a bearing, a handle, and a locking component. The lead screw is mounted on the fixed plate via the bearing. One end of the lead screw is connected to the handle, and the other end passes through the movable plate and is rotatably connected to the movable plate. The locking component is sleeved on the lead screw and mounted on the fixed plate.

4. The coating apparatus as described in claim 2, characterized in that, The driving component includes a lead screw, a bearing, and a rotary motor. The lead screw is mounted on the fixed plate via the bearing. One end of the lead screw is connected to the output shaft of the rotary motor, and the other end passes through the movable plate and is rotatably connected to the movable plate.

5. The coating apparatus as described in claim 1, characterized in that, The guide plate has grooves at both ends along its width direction, and the coating roller has mounting grooves extending along its circumference at both ends. The two sides of the baffle plate abut against the corresponding grooves and mounting grooves.

6. The coating apparatus as described in claim 5, characterized in that, The chute has a first sidewall, the mounting groove has a second sidewall, one side surface of the guide plate abuts against both the first sidewall and the second sidewall, and the other side surface of the guide plate abuts against the adjustment assembly.

7. The coating apparatus as described in claim 5 or 6, characterized in that, The baffle plate is triangular in shape, with one side of the baffle plate that abuts against the mounting groove being an arc surface, and the other side of the baffle plate that abuts against the sliding groove being a flat surface.

8. The coating apparatus as described in claim 6, characterized in that, The baffle plate is slidably installed in the groove via a fixing block. The fixing block can drive the baffle plate to slide along the extension direction of the groove to move closer to or away from the mounting groove. The adjusting component directly abuts against the fixing block.

9. The coating apparatus as claimed in claim 8, characterized in that, The guide plate is provided with a first positioning plate at both ends along its width direction. A plurality of first set screws are provided through the first positioning plate. The first set screws press against the fixing block, thereby pressing the baffle plate against the first side wall of the slide groove.

10. The coating apparatus as claimed in claim 6, characterized in that, The guide plate has a second positioning plate at the end away from the coating roller and at the position corresponding to the chute. A plurality of second set screws are provided through the second positioning plate. The second set screws press against the fixing block, thereby pressing the glue baffle plate into the mounting groove.

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