Substrate film covering device

Abstract

The utility model discloses a substrate film laminating device, which belongs to the technical field of plate film laminating equipment and comprises a roller conveyor, a negative pressure conveyor and a lower film unreeling machine, and a correction mechanism for aligning a substrate is arranged on the roller conveyor; the negative pressure conveyor is arranged at the output end of the roller conveyor; and the lower film unreeling machine is arranged below the roller conveyor and is used for conveying the film to the negative pressure conveyor. The lower film unreeling machine can convey a film to the negative pressure conveyor firstly, then the correction conveyor conveys the substrate to the film adsorbed on the conveying belt on the negative pressure conveyor, and therefore film covering on the lower surface of the substrate is completed, and compared with a traditional mode that the substrate is conveyed to the negative pressure conveyor through a clamping mechanism for film covering, the film covering efficiency is greatly improved. No mechanism is arranged above the substrate, so that the risk that impurities fall off from the substrate is avoided, and equipment connection is simpler.

Description

Technical Field

[0001] This utility model relates to the field of substrate coating equipment technology, specifically to a substrate coating device. Background Technology

[0002] In the fields of electronics manufacturing, new energy batteries, and precision component processing, substrate coating is a crucial step in ensuring product quality. Traditional coating equipment often employs a "top-suction, bottom-feed" structure, where a negative pressure suction cup or mechanical gripper grips the substrate from above and then transfers it to a negative pressure conveyor belt, coordinating with a lower film unwinding mechanism to complete the coating process. However, this structure presents a high risk of contamination: traditional equipment requires a suction cup or gripper moving mechanism on the substrate, and its reciprocating motion easily generates particles that fall off, causing surface contamination of the substrate (such as scratches and foreign matter adhesion), which is particularly significant for optical-grade substrates (such as photovoltaic glass and flexible circuit boards). Utility Model Content

[0003] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a substrate coating device that, by optimizing the position and structure of the roller conveyor and the negative pressure conveyor, reduces the risk of impurities falling from the substrate while achieving the coating function and simplifies the coating structure.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a substrate coating device, comprising:

[0005] A roller conveyor, wherein the roller conveyor is equipped with a correction mechanism for aligning substrates;

[0006] A negative pressure conveyor is installed at the output end of a roller conveyor. The negative pressure conveyor includes a frame, two rollers rotatably mounted on the frame, a conveyor belt wound around the two rollers, and a negative pressure assembly installed below the conveyor belt. The conveyor belt is provided with adsorption holes.

[0007] The film unwinding machine is located below the roller conveyor and is used to feed the film onto the negative pressure conveyor.

[0008] The negative pressure component draws in air through the adsorption holes, causing the film to adhere to the surface of the conveyor belt.

[0009] Preferably, the negative pressure component includes:

[0010] The gas collection chamber has a flat top that fits tightly against the lower surface of the conveyor belt. Multiple through slots are formed on the top of the gas collection chamber, and the positions of the through slots correspond to the adsorption holes. The interior of the gas collection chamber is hollow.

[0011] An exhaust fan, the air inlet of which is connected to the inner cavity of the air collection chamber via a pipe.

[0012] Preferably, vertical guide rails are arranged on the first frame, and the tensioning rollers are arranged on the guide rails and abut against the conveying belt from the inner side of the conveying belt.

[0013] Preferably, the tensioning rollers are rotatably arranged on the tensioning blocks, the tensioning blocks are slidably arranged on the guide rails, and the adjusting rods are rotatably arranged on the guide rails and threadedly cooperated with the tensioning blocks.

[0014] Preferably, the drum conveyor comprises a second frame and a plurality of drums rotatably arranged on the second frame, the correcting mechanism comprises two clamping plates symmetrically arranged below the drums, and clamping claws at the top of the clamping plates extend from the gap between the drums to above the drums; and the second frame is provided with a driving mechanism for driving the two clamping plates to move symmetrically.

[0015] Preferably, the second frame is provided with two guide rods parallel to the drums, and each of the clamping plates is fixed with two sliding blocks respectively sleeved on the two guide rods.

[0016] Preferably, the driving mechanism comprises two racks respectively fixedly connected with the two clamping plates, a gear is rotatably arranged on the second frame, the two racks are parallel and respectively engaged with two sides of the gear, and a cylinder for driving one of the clamping plates to move linearly is fixed on the second frame.

[0017] Preferably, the lower film unwinding machine comprises a third frame and unwinding rollers, flattening rollers and adjusting rollers rotatably arranged on the third frame, a film roll is sleeved on the unwinding rollers, and the film is conveyed onto the conveying belt after passing through the flattening rollers and the adjusting rollers.

[0018] Preferably, the adjusting rollers have the freedom of lifting on the third frame, and the travel of the film on the lower film unwinding machine changes when the adjusting rollers are lifted.

[0019] Preferably, the first frame is provided with a mounting plate with a positioning groove, a motor for driving the roller shaft to rotate is arranged on the mounting plate, and the motor is fixed on the mounting plate through bolts penetrating through the positioning groove.

[0020] The utility model discloses the beneficial effect lies in:

[0021] The drum conveyor is located at the input end of the negative pressure conveyor, the lower film unwinding machine is arranged below the correction conveyor, the lower film unwinding machine can first convey the film to the negative pressure conveyor, then the correction conveyor conveys the film adsorbed on the conveying belt of the negative pressure conveyor, so that the film on the lower surface of the substrate is completed, compared with the mode that the traditional clamping mechanism moves the substrate to the negative pressure conveyor to coat the film, no mechanism is arranged above the substrate, the risk of falling impurities above is avoided, and the equipment connection is more simple; the symmetrical movement of the clamping jaw on the drum conveyor is realized through the rack and pinion transmission driven by the air cylinder, the substrate is accurately centered on the drum conveyor, the substrate offset error can be eliminated, and the film deviation caused by the mispositioning of the substrate is reduced; the top through groove of the gas collection bin and the adsorption hole of the conveying belt are accurately corresponded, the uniform negative pressure area is formed by cooperating with the air extractor, and the film is tightly adsorbed without sliding in the whole process. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 The overall structure schematic diagram of a substrate film coating device provided by the present application is shown.

[0024] Figure 2 For Figure 1 The local enlarged view of A in the middle.

[0025] Figure 3 For Figure 1 The local enlarged view of B in the middle.

[0026] Figure 4 The perspective view of the conveying belt of the present application.

[0027] Mark explanation:

[0028] 1, drum conveyor, 11, rack two, 12, drum, 13, clamping plate, 14, guide rod, 15, sliding block, 16, gear, 17, rack, 18, air cylinder, 2, negative pressure conveyor, 21, rack one, 22, roller, 23, conveying belt, 231, adsorption hole, 24, gas collection bin, 25, air extractor, 26, guide rail, 27, tensioning roller, 28, mounting plate, 29, motor, 3, lower film unwinding machine, 31, rack three, 32, unwinding roller, 33, flattening roller, 34, adjusting roller. DETAILED DESCRIPTION

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1:

[0031] like Figures 1 to 4 As shown, Embodiment 1 of this utility model provides a substrate coating device for coating the lower surface of a substrate. It has a compact structure and complete functions, comprising three parts: a roller conveyor 1, a negative pressure conveyor 2, and a lower film unwinding machine 3. The specific structure is as follows:

[0032] First, the roller conveyor 1, as the initial conveying unit for the substrate, includes a supporting frame 11 and multiple rollers 12 rotatably mounted on the frame 11. The frame 11 is equipped with a correction mechanism for aligning the substrate, thus addressing the issue of substrate conveying positional deviation. Figure 2 As shown, the correction mechanism includes two clamping plates 13 symmetrically arranged on the frame 11 below the roller 12. The grippers on the top of the two clamping plates 13 extend from the gap between the adjacent rollers 12 to the top of the rollers 12. When the two grippers approach each other, they can push the substrate on the roller 12 toward the center, ensuring the straightness and positional accuracy of the substrate during the conveying process through precise alignment.

[0033] To achieve synchronous relative movement of the two clamping plates 13, this invention provides two guide rods 14 parallel to the rollers 12 on the second frame 11. Each clamping plate 13 is fixed with two sliders 15, which are respectively sleeved on the two guide rods 14. This ensures the stability and accuracy of the clamping plates 13 during movement. This invention designs a drive mechanism to drive the movement of the clamping plates 13. The drive mechanism uses a cylinder 18 to drive a rack and pinion 17 and a gear 16 for transmission. The gear 16 is rotatably mounted on the second frame 11. Two racks 17, which are fixedly connected to the two clamping plates 13 respectively, are parallel and mesh with the two sides of the gear 16 respectively. The cylinder 18 is fixed on the second frame 11 and is used to drive one of the clamping plates 13 to move linearly along the guide rod 14. When one of the clamping plates 13 moves along the guide rod 14 by the extension and retraction of the cylinder 18, the clamping jaws move symmetrically on the roller conveyor 1 through the reversing synchronous drive of the gear 16 and rack 17, thereby ensuring that the substrate is accurately aligned, effectively eliminating substrate offset error and reducing coating deviation.

[0034] like Figure 1 , Figure 3 and Figure 4As shown, the negative pressure conveyor 2 is arranged at the output end of the roller conveyor 1, and the roller conveyor 1 can convey the substrate to the negative pressure conveyor 2. The negative pressure conveyor 2 comprises a rack one 21, two roller shafts 22 are rotatably installed on the rack one 21 through bearing seats, a conveying belt 23 is wound around the two roller shafts 22, and a negative pressure assembly is installed on the rack one 21 below the conveying belt 23. Figure 4 As shown, a plurality of suction holes 231 are formed in the conveying belt 23, and the negative pressure assembly can suck air through the suction holes 231 to tightly adsorb the film on the surface of the conveying belt 23 and move with the movement of the conveying belt 23.

[0035] The negative pressure assembly comprises two main components of a gas collecting chamber 24 and an air extractor 25, wherein the top of the gas collecting chamber 24 is a plane and is attached to the lower surface of the upper conveying belt 23, a plurality of through grooves corresponding to the positions of the suction holes 231 are formed in the top, and the air inlet of the air extractor 25 is communicated with the inner cavity of the gas collecting chamber 24 through a pipeline, so that when the air extractor 25 works, a stable negative pressure environment can be formed in the gas collecting chamber 24, so that the suction holes 231 suck the film, and the film is prevented from sliding during the conveying process.

[0036] As shown, Figure 1 The lower film unwinding machine 3 is arranged below the roller conveyor 1 and is used for conveying the film to the negative pressure conveyor 2, and the substrate is conveyed to the conveying belt 23 which has been covered with the film. The negative pressure conveyor 2 comprises a rack three 31 and a unwinding roller 32, a flattening roller 33 and an adjusting roller 34 rotatably installed on the rack three 31, wherein the film roll is sleeved on the unwinding roller 32, the unwinding roller 32 is driven to rotate by a motor, and unwinding is performed. The film is conveyed to the conveying belt 23 after winding around the flattening roller 33 and the adjusting roller 34.

[0037] In the embodiment, the correction mechanism is arranged to ensure that the substrate is accurately centered when the roller conveyor 1 conveys the substrate, the negative pressure conveyor 2 ensures that the film is tightly adsorbed, and the lower film unwinding machine 3 provides a flexible film conveying mode, so that the efficient film covering of the lower surface of the substrate is realized, there is no clamping and transferring mechanism above the substrate, the risk of falling impurities above is avoided, the equipment connection is simple, and the film covering quality is high.

[0038] Embodiment two

[0039] On the basis of the embodiment one, the embodiment two provided by the utility model is optimized. As shown, Figure 3As shown, vertical guide rails 26 are arranged on the frame 21 of the negative pressure conveyor 2, and a tensioning block is slidingly installed on the guide rails 26, and a tensioning roller 27 is rotatably installed on the tensioning block and abuts against the conveying belt 23 from the inner side of the lower conveying belt 23. An adjusting rod is rotatably installed on the guide rails 26 and threadedly cooperates with the tensioning block, and the position of the tensioning roller 27 can be conveniently adjusted by rotating the adjusting rod, so as to realize accurate control of the tensioning degree of the conveying belt 23, ensure that the conveying belt 23 maintains appropriate tensioning degree during long-time operation, and prevent uneven coating or film peeling due to slackening.

[0040] In addition, a mounting plate 28 with a positioning groove is arranged on the frame 21, and a motor 29 for driving the roller shaft 22 to rotate is fixed on the mounting plate 28. The motor 29 drives the roller shaft 22 to rotate through a belt transmission mechanism. Figure 1 As shown, the motor 29 is fixed on the mounting plate 28 through bolts passing through the positioning groove. This design enables the vertical position of the motor 29 to be finely adjusted, facilitates tensioning of the belt, improves transmission precision between the motor 29 and the roller shaft 22, and ensures stable operation of the conveying belt 23.

[0041] Embodiment three:

[0042] On the basis of the embodiments one and two, the adjusting roller 34 designed in the utility model has the freedom of lifting on the frame three 31. First, vertical guide rails are also arranged on the frame three 31, a sliding seat is slidingly installed on the guide rails, and the adjusting roller 34 is rotatably installed on the sliding seat. Figure 1 As shown, the user can manually adjust the position of the sliding seat on the guide rails or fix another air cylinder 18 on the frame three 31, drive the sliding seat to move on the guide rails through the extension and retraction of the extension end of the air cylinder 18, and then change the stroke of the film on the lower film unwinding machine 3, so as to temporarily store a certain length of film while the unwinding roller 32 continuously unwinds, so that the film is not immediately sucked onto the conveying belt 23.

[0043] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model belong to the scope of the claims of the utility model and equivalent technologies, the utility model also intends to include these modifications and variations.

Claims

1. A substrate film coating apparatus characterized by comprising: The utility model relates to a film conveying device, which comprises: a roller conveyor provided with a correction mechanism for aligning a substrate; a negative pressure conveyor arranged at an output end of the roller conveyor, the negative pressure conveyor comprising a frame one, two roller shafts rotatably arranged on the frame one, a conveying belt wound around the two roller shafts, and a negative pressure assembly arranged below the conveying belt, the conveying belt being provided with suction holes; a lower film unwinding machine arranged below the roller conveyor and used for conveying a film to the negative pressure conveyor; wherein the negative pressure assembly sucks air through the suction holes to cause the film to be adsorbed on the surface of the conveying belt.

2. The substrate film coating apparatus of claim 1, wherein The negative pressure assembly comprises: a gas collection chamber, the top of the gas collection chamber being flat and closely attached to the lower surface of the conveying belt, the top of the gas collection chamber being provided with a plurality of through grooves, the positions of the through grooves corresponding to the positions of the suction holes, and the inside of the gas collection chamber being hollow; an air extractor, the air inlet of the air extractor being communicated with the inner cavity of the gas collection chamber through a pipeline.

3. The substrate film coating apparatus of claim 1, wherein The frame one is provided with a vertical guide rail, the guide rail is provided with a tensioning roller, and the tensioning roller abuts against the conveying belt from the inner side of the conveying belt.

4. The substrate film coating apparatus of claim 3, wherein The tensioning roller is rotatably arranged on a tensioning block, the tensioning block is slidably arranged on the guide rail, and the guide rail is rotatably arranged with an adjusting rod threadedly matched with the tensioning block.

5. The substrate film coating apparatus of claim 1, wherein The roller conveyor comprises a frame two and a plurality of rollers rotatably arranged on the frame two, the correction mechanism comprises two clamping plates symmetrically arranged below the rollers, the clamping jaws at the top of the clamping plates extend from the gap between the rollers to above the rollers, and the frame two is provided with a driving mechanism for driving the two clamping plates to move symmetrically.

6. The substrate film coating apparatus of claim 5, wherein The frame two is provided with two guide rods parallel to the rollers, and each clamping plate is fixed with two sliding blocks respectively sleeved on the two guide rods.

7. The substrate film coating apparatus of claim 6, wherein The driving mechanism comprises two racks respectively fixedly connected with the two clamping plates, the frame two is rotatably arranged with a gear, the two racks are parallel and respectively engaged with the two sides of the gear, and the frame two is fixed with a cylinder for driving one of the clamping plates to move linearly.

8. The substrate film coating apparatus of claim 1, wherein The lower film unwinding machine comprises a frame three, an unwinding roller, a flattening roller and an adjusting roller rotatably arranged on the frame three, a film roll is sleeved on the unwinding roller, and the film is conveyed onto the conveying belt after passing through the flattening roller and the adjusting roller.

9. The substrate film coating apparatus of claim 8, wherein The adjusting roller has the freedom of lifting on the frame three, and the travel of the film on the lower film unwinding machine changes when the adjusting roller lifts.

10. The substrate film coating apparatus of claim 1, wherein The frame one is provided with a mounting plate with a positioning groove, the mounting plate is provided with a motor for driving the roller shaft to rotate, and the motor is fixed on the mounting plate through a bolt penetrating through the positioning groove.

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