Coating device with anti-slip conveying structure

Abstract

The utility model relates to a kind of coating device with antiskid conveying structure, core improvement is to replace the first over roller of traditional metal over roller of winding guide roller group with plastic material and the first over roller of surface being equipped with antiskid structure, to solve traditional technical defects.Plastic material friction coefficient is higher than metal, can naturally promote and the contact friction of flexible copper-clad plate substrate, surface antiskid structure is matched, can further increase effective contact area, make friction force multiple level promotion, ensure that flexible copper-clad plate substrate is stably and uniformly conveyed to winding mechanism.Meanwhile, plastic thermal conductivity is far lower than metal, surface temperature is little by environmental temperature and humidity fluctuation, not easy to reduce to dew point temperature below, reduce the condensation of over roller surface water vapor from the source, greatly reduce the probability of dewing, both eliminate the negative influence of water droplet on friction coefficient, consolidate antiskid effect, prevent flexible copper-clad plate substrate from being damp and deforming, improve the reliability and service life of final product.

Description

Technical Field

[0001] This utility model relates to the field of coating device technology, and in particular to a coating device with an anti-slip conveying structure. Background Technology

[0002] In the industrial production process of flexible copper-clad laminate (CCL) substrates, the coating process is a core step that determines the product's performance and appearance. Its main function is to precisely and evenly apply functional adhesives to the surface of the CCL substrate using a coating device, laying the foundation for subsequent processes such as lamination and curing. Currently, mainstream coating devices typically use a frame as a support structure, with unwinding guide rollers, coating steel rollers, and rewinding guide rollers arranged sequentially along the conveying direction of the CCL substrate. A coating die assembly is also used to achieve quantitative adhesive application. After the CCL substrate is released from the unwinding end, the unwinding guide rollers correct its conveying path, and it enters the coating area formed by the coating steel rollers and coating die assembly to complete the adhesive coating. Finally, the rewinding guide rollers guide it to the rewinding mechanism for winding, forming a continuous production process.

[0003] In this process, the guide rollers of the winding guide roller assembly serve as a key transmission component connecting the coating area and the winding mechanism, and their performance directly affects the stability of the flexible copper-clad laminate (CCL) substrate transport and the winding quality. In traditional technology, the guide rollers of the winding guide roller assembly are generally made of metal. However, metal guide rollers have the following shortcomings in practical applications: 1. The surface of the metal guide roller is smooth, resulting in a low coefficient of friction with the flexible CCL substrate. During the winding stage, to ensure the tightness of the flexible CCL substrate winding, a certain tension is usually applied. When the flexible CCL substrate is conveyed upwards along the metal guide roller under tension, it is prone to slippage due to insufficient friction between the guide roller and the flexible CCL substrate. 2. The thermal conductivity of metal is much higher than that of plastic and air. In industrial production environments, the temperature and humidity in the workshop often fluctuate due to factors such as equipment heat dissipation and air conditioning control. When the ambient temperature drops suddenly or the humidity rises, the surface temperature of the metal roller will respond quickly to the environmental change. If the surface temperature is lower than the ambient dew point temperature, water vapor in the air will condense into water droplets on the surface of the metal roller, forming "condensation". These condensed water droplets will adhere to the contact surface between the roller and the flexible copper-clad laminate substrate, which may cause the flexible copper-clad laminate substrate to become damp, causing the substrate to deform in subsequent processing and seriously affecting the reliability of the final product. Utility Model Content

[0004] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a coating device with an anti-slip conveying structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A coating apparatus with an anti-slip conveying structure includes a frame. An unwinding guide roller group, a coating steel roller, and a winding guide roller group are sequentially arranged on the frame along the conveying direction. A flexible copper-clad laminate substrate is sequentially wound around the unwinding guide roller group, the coating steel roller, and the winding guide roller group. A coating die head assembly is also provided on the frame. The winding guide roller group includes a plurality of rotatably arranged first guide rollers. The first guide rollers are made of plastic and have an anti-slip structure on their surface.

[0007] In some embodiments, the anti-slip structure includes a rubber sleeve that is spaced axially on the first guide roller, and when the rubber sleeve is on the first guide roller, its circumferential surface protrudes from the first guide roller.

[0008] In some embodiments, the height by which the rubber sleeve protrudes from the first roller is no more than 1 mm.

[0009] In some embodiments, the unwinding guide roller group includes at least two second guide rollers spaced vertically apart, and a dust-collecting and cleaning device is provided on the frame and located between the two second guide rollers. The dust-collecting and cleaning device can perform dust-collecting and cleaning on the surface of the flexible copper-clad laminate substrate to be coated with adhesive.

[0010] In some embodiments, the vacuum cleaning device includes a support frame disposed on the frame, and a vacuum head assembly is disposed on one side of the support frame.

[0011] In some embodiments, the support frame includes horizontal bars fixedly mounted on the frame at left and right intervals, and square guide grooves are provided on the opposite end faces of the two horizontal bars. A sliding square bar slides left and right in the two square guide grooves, and the dust suction head assembly is mounted on the sliding square bar.

[0012] In some embodiments, the support frame is further provided with a reciprocating drive mechanism that can drive the sliding square rod to slide back and forth along the square guide groove.

[0013] In some embodiments, the reciprocating drive mechanism includes a U-shaped mounting bracket disposed between the two crossbars. The U-shaped mounting bracket is located below the sliding square bar. A motor is disposed on the U-shaped mounting bracket. A horizontal plate is disposed on the output shaft of the motor. An eccentric rod is disposed at one end of the horizontal plate. A guide groove extending in the front-rear direction is disposed at the lower end of the sliding square bar. The eccentric end is disposed in the guide groove.

[0014] In some embodiments, an excess adhesive collection hopper is provided within the frame and below the coating steel roller and the coating die assembly.

[0015] In some embodiments, swing plates are hinged to the left and right side walls of the frame, and pressure rollers are rotatably connected to one end of the two swing plates. The pressure rollers are located below the coating steel rollers. A cylinder is also provided in the frame. The piston rod of the cylinder is connected to the swing plates, and the cylinder drives the swing plates to swing upward, so that the pressure rollers abut against the coating steel rollers.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By replacing the traditional metal guide rollers of the winding guide roller assembly with a first guide roller made of plastic with an anti-slip structure on its surface, the core defects of the traditional technology are precisely solved. Compared with metal, plastic material itself has a higher surface friction coefficient, which can naturally increase the contact friction between the plastic material and the flexible copper-clad laminate substrate, laying the foundation for preventing slippage. At the same time, the anti-slip structure added to the surface of the first guide roller further increases the effective contact area between the guide roller and the flexible copper-clad laminate substrate, thereby increasing the friction between the two by several times. This ensures that the flexible copper-clad laminate substrate is transported to the winding mechanism in a stable and uniform manner.

[0018] 2. The thermal conductivity of plastic materials is only a fraction of that of metals, sometimes even a fraction of a fraction. Their surface temperature is minimally affected by fluctuations in ambient temperature and humidity, and they do not easily drop below the ambient dew point temperature. This characteristic fundamentally reduces the condensation of moisture in the air on the roller surface, significantly lowering the probability of condensation. It eliminates the negative impact of water droplets on the friction coefficient between the roller and the flexible copper-clad laminate substrate, further strengthening the anti-slip effect. Simultaneously, it prevents the flexible copper-clad laminate substrate from becoming damp due to contact with water droplets, avoiding substrate deformation during subsequent processing, and overall improving the reliability and service life of the final product. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the coating device of this utility model;

[0020] Figure 2 This is a cross-sectional view of the coating device of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0022] Figure 4 This is a schematic diagram of the structure of the first roller of this utility model;

[0023] Figure 5 This is one of the structural schematic diagrams of the dust collection and cleaning device of this utility model;

[0024] Figure 6 This is the second schematic diagram of the structure of the dust collection and cleaning device of this utility model. Detailed Implementation

[0025] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0026] The following figures and detailed embodiments further describe the present invention: Figures 1-6 The coating apparatus shown includes a frame 1. An unwinding guide roller group 2, a coating steel roller 3, and a winding guide roller group 4 are sequentially arranged on the frame 1 along the conveying direction. A flexible copper-clad laminate substrate 7 is sequentially wound around the unwinding guide roller group 2, the coating steel roller 3, and the winding guide roller group 4. A coating die head assembly 5 is also provided on the frame 1. The winding guide roller group 4 includes a plurality of rotatably arranged first guide rollers 6. The first guide rollers 6 are made of plastic and have an anti-slip structure on their surface.

[0027] After production starts, the flexible copper-clad laminate substrate 7 is released from the unwinding mechanism (not separately labeled in the attached diagram, but a standard industry component) and first enters the unwinding guide roller group 2 on the frame 1. The unwinding guide roller group 2 corrects and guides the conveying direction of the flexible copper-clad laminate substrate 7 through the rotation of multiple rollers. After being guided by the unwinding guide roller group 2, the flexible copper-clad laminate substrate 7 enters the coating area where the coating steel roller 3 is located. At this time, the coating die head assembly 5 on the frame 1 starts and evenly applies a fixed amount of functional adhesive to the surface of the flexible copper-clad laminate substrate 7 according to production requirements. The coating steel roller 3 provides continuous conveying power to the flexible copper-clad laminate substrate 7 through its own rotation. On the other hand, its smooth and high-precision roller surface cooperates with the coating die head assembly 5 to flatten and control the thickness of the adhesive applied to the surface of the flexible copper-clad laminate substrate 7, ensuring uniform coating thickness and a smooth surface, thus completing the coating process. The coated flexible copper-clad laminate substrate 7 needs to move towards the winding mechanism (not separately labeled in the attached drawings, but a standard component in the industry). During this stage, the winding guide roller group 4 plays a crucial role in conveying and guiding the substrate. The winding guide roller group 4 includes several rotatably mounted first guide rollers 6 around which the flexible copper-clad laminate substrate 7 is wound. Because the first guide rollers 6 are made of plastic and have an anti-slip surface, sufficient friction is generated between them and the flexible copper-clad laminate substrate 7. The high coefficient of friction of the plastic material combined with the increased contact area from the anti-slip surface effectively prevents slippage of the flexible copper-clad laminate substrate 7 during upward conveying (in typical scenarios adapting to the height of the winding mechanism), ensuring that the flexible copper-clad laminate substrate 7 always moves at a stable and uniform speed.

[0028] See Figure 4 As shown, the anti-slip structure includes rubber sleeves 21 that are spaced apart along the axial direction on the first roller 6. When the rubber sleeves 21 are fitted on the first roller 6, their circumferential surfaces protrude from the first roller 6.

[0029] Furthermore, the height of the rubber sleeve 21 protruding from the first roller 6 is no more than 1 mm.

[0030] Because the circumferential surface of the rubber sleeve 21 protrudes from the roller body surface of the first roller 6, it will preferentially form contact with the bottom surface of the flexible copper-clad laminate substrate 7. Compared with the plastic material of the first roller 6 body, the rubber material has a higher coefficient of friction and a certain elastic deformation capability. Under the tension of the flexible copper-clad laminate substrate 7, the rubber sleeve 21 will produce slight extrusion deformation, further increasing the actual contact area with the flexible copper-clad laminate substrate 7.

[0031] See Figure 2 , Figure 5 As shown, the unwinding guide roller group 2 includes at least two second guide rollers 41 spaced vertically. A dust-collecting and cleaning device is provided on the frame 1 and located between the two second guide rollers 41. The dust-collecting and cleaning device can perform dust-collecting and cleaning on the surface of the flexible copper-clad laminate substrate 7 to be coated with adhesive.

[0032] The vacuum cleaning device includes a support frame 51 mounted on the frame 1, and a vacuum head assembly 52 is provided on one side of the support frame 51.

[0033] Driven by the negative pressure system (not separately labeled in the attached drawings, but a standard component of the vacuuming device), the vacuum head assembly 52 generates negative pressure suction. When the flexible copper-clad laminate substrate 7 passes in front of the vacuum head assembly 52 at a stable speed, the vacuum head assembly 52 sucks in the dust, fibers, debris and other tiny impurities attached to the surface of the flexible copper-clad laminate substrate 7 to be coated, completing the vacuum cleaning of the surface of the flexible copper-clad laminate substrate 7 to be coated. After cleaning, the flexible copper-clad laminate substrate 7 continues to move towards the coating area in a flat state under the guidance of the second roller 41, and enters the subsequent coating process in which the coating steel roller 3 and the coating die assembly 5 cooperate, laying the foundation for the uniform coating of adhesive on the clean surface.

[0034] See Figure 5 , Figure 6 As shown, the support frame 51 includes horizontal bars 61 fixedly mounted on the frame 1 at left and right intervals. Square guide grooves 62 are provided on the opposite end faces of the two horizontal bars 61. Sliding square bars 63 slide left and right in the two square guide grooves 62. The dust suction head assembly 52 is mounted on the sliding square bars 63.

[0035] A reciprocating drive mechanism is also provided on the support frame 51 to drive the sliding square rod 63 to slide back and forth along the square guide groove 62. The reciprocating drive mechanism includes a U-shaped mounting frame 71 disposed between the two cross rods 61. The U-shaped mounting frame 71 is located below the sliding square rod 63. A motor 72 is disposed on the U-shaped mounting frame 71. A horizontal plate 75 is disposed on the output shaft of the motor 72. An eccentric rod 73 is disposed at one end of the horizontal plate 75. A guide groove 74 extending in the front-back direction is disposed at the lower end of the sliding square rod 63. One end of the eccentric rod 73 is disposed in the guide groove 74.

[0036] Specifically, firstly, the support frame 51 provides stable support through the horizontal bars 61 fixed to the frame 1 at left and right intervals. The square guide grooves 62 on the opposite end faces of the two horizontal bars 61 provide a precise left and right sliding track for the sliding square bar 63, ensuring that the sliding square bar 63 can only move back and forth in the horizontal direction without vertical deviation or wobbling. The vacuum head assembly 52 is fixed on the sliding square bar 63, and the movement of the sliding square bar will directly drive the vacuum head assembly to move synchronously. At this time, the reciprocating drive mechanism is activated, and the U-shaped mounting bracket 71 installed between the two horizontal bars 61 and located below the sliding square bar 63 provides a stable mounting base for the motor 72. After the motor 72 is powered on, the output shaft rotates vertically upward, driving the horizontal plate 75 fixed on the output shaft and the eccentric rod 73 to perform circular motion synchronously. Since one end of the eccentric rod 73 is embedded in the guide groove 74 at the lower end of the sliding square rod 63, and the guide groove 74 extends in the front-back direction (only allowing the end of the eccentric rod 73 to slide back and forth in the groove, restricting vertical displacement), when the eccentric rod 73 makes a circular motion, the back-and-forth sliding of its end in the guide groove 74 will be converted into a horizontal pushing and pulling force on the sliding square rod 63. Under the guidance constraint of the square guide groove 62, the sliding square rod 63 cannot make a circular motion with the eccentric rod 73, and can only slide back and forth along the square guide groove 62, thereby driving the dust collection head assembly 52 to make a horizontal reciprocating motion above the surface to be coated on the flexible copper clad laminate substrate 7. Meanwhile, the suction head assembly 52 continuously generates suction under the drive of the negative pressure system. As it moves back and forth, it can cover the entire width of the surface of the flexible copper clad laminate substrate 7 to be coated, and suck up all the dust, fibers and other impurities attached to the surface, thus completing the efficient and thorough cleaning of the surface of the flexible copper clad laminate substrate 7 to be coated. The cleaned flexible copper clad laminate substrate 7 then continues to enter the subsequent coating process along the conveying path.

[0037] See Figure 2 As shown, an excess glue collection hopper 91 is provided inside the frame 1 and below the coating steel roller 3 and the coating die assembly 5. The excess glue collection hopper 91 can collect the excess glue generated during the coating process, avoiding the waste of excess glue by dripping directly.

[0038] See Figure 2 , Figure 3As shown, swing plates 10 are hinged to the left and right side walls of the frame 1. Pressure rollers 11 are rotatably connected to one end of the two swing plates 10. The pressure rollers 11 are located below the coating steel roller 3. A cylinder 12 is also provided in the frame 1. The piston rod of the cylinder 12 is connected to the swing plates 10 and drives the swing plates 10 to swing upward, so that the pressure rollers 11 abut against the coating steel roller 3.

[0039] The swing plates 10, hinged to the left and right side walls of the frame 1, can swing up and down flexibly around the hinge point as the center of rotation. The pressure roller 11 is rotatably connected to one end of the two swing plates 10 and moves synchronously with the swing plates. In the initial state, the piston rod of the cylinder 12 retracts, and the pressure roller 11 maintains a distance from the coating steel roller 3, facilitating the smooth insertion of the flexible copper-clad laminate substrate 7 between them. When the coating operation starts, the piston rod of the cylinder 12 extends outward after being energized, applying a uniform upward thrust to the swing plates 10. Because the swing plates are hinged to the frame, the thrust will drive the swing plates to swing smoothly upward around the hinge point, thereby causing the pressure roller 11 to move upward synchronously until it makes full contact with the surface of the flexible copper-clad laminate substrate 7 below the coating steel roller 3. At this time, the cylinder continuously outputs a stable thrust, which is transmitted to the pressure roller through the swing plates, so that the pressure roller applies uniform and controllable pressure to the flexible copper-clad laminate substrate 7. Under pressure, the flexible copper-clad laminate substrate 7 is tightly pressed onto the surface of the coating steel roller 3, eliminating the air gap between the two, and ultimately achieving a smooth coating and a strong adhesion, significantly improving product quality.

[0040] Based on the accompanying drawings and the foregoing display and description of the basic principles, main features, and advantages of this utility model, those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coating apparatus with an anti-slip conveying structure, comprising a frame (1), wherein an unwinding guide roller group (2), a coating steel roller (3), and a rewinding guide roller group (4) are sequentially arranged on the frame (1) along the conveying direction, a flexible copper-clad laminate substrate (7) is sequentially wound around the unwinding guide roller group (2), the coating steel roller (3), and the rewinding guide roller group (4), and a coating die assembly (5) is also provided on the frame (1), characterized in that: The winding guide roller group (4) includes several rotating first guide rollers (6), which are made of plastic and have an anti-slip structure on their surface.

2. The coating apparatus with an anti-slip conveying structure according to claim 1, characterized in that: The anti-slip structure includes a rubber sleeve (21) that is spaced along the axial direction on the first roller (6). When the rubber sleeve (21) is on the first roller (6), its circumferential surface protrudes from the first roller (6).

3. A coating apparatus with an anti-slip conveying structure according to claim 2, characterized in that: The height of the rubber sleeve (21) protruding from the first roller (6) is no more than 1 mm.

4. The coating apparatus with an anti-slip conveying structure according to claim 1, characterized in that: The unwinding guide roller group (2) includes at least two second guide rollers (41) spaced vertically. A dust-collecting and cleaning device is provided on the frame (1) and between the two second guide rollers (41). The dust-collecting and cleaning device can perform dust-collecting and cleaning on the surface of the flexible copper clad laminate substrate (7) to be coated with adhesive.

5. A coating apparatus with an anti-slip conveying structure according to claim 4, characterized in that: The vacuum cleaning device includes a support frame (51) mounted on the frame (1), and a vacuum head assembly (52) is provided on one side of the support frame (51).

6. A coating apparatus with an anti-slip conveying structure according to claim 5, characterized in that: The support frame (51) includes horizontal bars (61) fixedly mounted on the frame (1) at left and right intervals. Square guide grooves (62) are provided on the opposite end faces of the two horizontal bars (61). Sliding square bars (63) slide left and right in the two square guide grooves (62). The dust suction head assembly (52) is mounted on the sliding square bars (63).

7. A coating apparatus with an anti-slip conveying structure according to claim 6, characterized in that: The support frame (51) is also provided with a reciprocating drive mechanism that can drive the sliding square rod (63) to slide back and forth along the square guide groove (62).

8. A coating apparatus with an anti-slip conveying structure according to claim 7, characterized in that: The reciprocating drive mechanism includes a U-shaped mounting bracket (71) disposed between the two crossbars (61). The U-shaped mounting bracket (71) is located below the sliding square bar (63). A motor (72) is disposed on the U-shaped mounting bracket (71). A cross plate (75) is disposed on the output shaft of the motor (72). An eccentric rod (73) is disposed at one end of the cross plate (75). A guide groove (74) extending in the front-back direction is disposed at the lower end of the sliding square bar (63). One end of the eccentric rod (73) is disposed in the guide groove (74).

9. A coating apparatus with an anti-slip conveying structure according to claim 1, characterized in that: An excess glue collection hopper (91) is provided inside the frame (1) and below the coating steel roller (3) and the coating die assembly (5).

10. A coating apparatus with an anti-slip conveying structure according to claim 1, characterized in that: A swing plate (10) is hinged to both the left and right side walls of the frame (1). A pressure roller (11) is rotatably connected to one end of the two swing plates (10). The pressure roller (11) is located below the coating steel roller (3). A cylinder (12) is also provided in the frame (1). The piston rod of the cylinder (12) is connected to the swing plate (10) and drives the swing plate (10) to swing upward through the cylinder (12), so that its pressure roller (11) abuts against the coating steel roller (3).

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