Multi-roller double-sided coating device

Abstract

The invention provides a multi-roller double-face coating device which comprises a main machine box and further comprises a coating mechanism arranged on one side of the main machine box, the coating mechanism comprises an unwinding base and a winding base which are arranged on one side of the main machine box, and a roll changing mechanism is arranged at the top of the unwinding base; the roll changing mechanism comprises two sets of vertical frames arranged on the unwinding base, material frames are arranged on one sides of the two sets of vertical frames, an old winding roller and a new winding roller are arranged between the two sets of material frames, and the roll changing mechanism further comprises a roll changing assembly, a lifting assembly, a detecting assembly, a fitting assembly, a new material stamping assembly and an old material stamping assembly which are arranged on the unwinding base. Through contact between the detection assembly and the old base material roll, T-shaped splicing and splicing procedures of the new and old base material rolls are automatically triggered when the old base material roll is consumed, manual operation is not affected, deviation errors are reduced, and meanwhile the coating production efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coating devices, in particular to a multi-roller double-sided coating device. 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.

[0003] Chinese patent CN201910889509.9 discloses a multi-roller double-sided coating machine, including a base, a first trough, a second trough, a storage roller, a front loading roller, a back loading roller, and five transfer rollers arranged between the storage roller, the front loading roller, and the back loading roller. The front loading roller and the two adjacent transfer rollers and the three transfer rollers adjacent to the back loading roller are all connected to their respective oil cylinder transmission devices, and the storage roller, the front loading roller, the back loading roller and the five transfer rollers are each connected by a universal coupling. The transfer roller in contact with the storage roller is placed in the first trough, and the transfer roller in contact with the storage roller is placed in the second trough. The multi-roller double-sided coating head can realize the completion of the coating of both sides of the substrate in one coating mechanism, reduce energy consumption, reduce waste, facilitate loading and unloading, save costs, improve efficiency, apply evenly, and improve the stability of machine operation.

[0004] However, this technical solution has certain shortcomings when used. Usually, when the coating of a roll of substrate is completed, a new roll of substrate needs to be loaded manually, and after loading, the machine needs to be stopped to rewind the substrate, which can easily cause increased substrate loss and splicing or substrate deviation, further affecting the overall operation of the device. Summary of the Invention

[0005] The purpose of the present invention is to address the deficiencies of the prior art and provide a multi-roller double-sided coating device, which realizes automatic roll changing function by cooperating with the coating mechanism to solve the problem of difficult roll changing.

[0006] To achieve the above object, the present invention provides the following technical solutions: A multi-roller double-sided coating device includes a main box and a coating mechanism arranged on one side of the main box, the coating mechanism includes a reeling seat and a reeling seat arranged on one side of the main box, and a roll changing mechanism is provided on the top of the reeling seat; the roll changing mechanism includes two groups of vertical frames arranged on the reeling seat, and a material rack is provided on one side of the two groups of vertical frames, and an old reel and a new reel are provided between the two groups of material racks, and the roll changing mechanism also includes a roll changing assembly, a lifting assembly, a detection assembly, a laminating assembly, a new material stamping assembly and an old material stamping assembly arranged on the reeling seat.

[0007] The coating mechanism also includes a coating roller a arranged on the unwinding seat, a coating member a is arranged below the coating roller a, a coating roller b is arranged on the winding seat, a coating member b is arranged below the coating roller b, and multiple groups of drying rollers are also arranged on one side of the main box, a winding roller is arranged on the winding seat, and a substrate is wound between the winding roller and the multiple groups of rollers.

[0008] The roll changing assembly includes: a servo motor, which is arranged on the material rack; a gear a, which is arranged at one end of the output shaft of the servo motor; a bearing, two groups of the bearings are respectively installed at both ends of the old roller and the new roller; a lifting groove, which is opened on the material rack; a gear b, two groups of the gear b are respectively installed at both ends of the old roller and the new roller; a gear c, which is movably connected to the material rack; an electromagnetic seat, which is installed at the top of the material rack; and an arc-shaped electromagnetic sheet, which is embedded in the top of the lifting groove.

[0009] The lifting assembly includes: a base plate, which is arranged under the unwinding seat; a pad, which is movably connected to the base plate; a hydraulic device, which is installed under the base plate; a guide rod, two groups of which are fixedly connected to the base plate; a guide plate, which is arranged at the tail end of the unwinding seat; and rollers, multiple groups of which are movably connected to the guide plate.

[0010] The detection assembly includes: a fixed tube, which is fixedly connected to the inner side of the material rack; a support plate, which is arranged under the fixed tube; a spring rod, two groups of which are arranged on the support plate; a spring a, which is arranged on the outside of the spring rod; a slip ring, which is movably connected to the fixed tube; an inner rod, which is fixedly connected under the slip ring; a pin head, which is arranged at the bottom end of the inner rod; a pin seat, which is arranged under the pin head; a pin shaft, which is arranged on both sides of the pin head; and a slide groove, wherein multiple groups of the slide grooves are opened on the outside of the fixed tube.

[0011] The detection component also includes: an assembly plate, which is fixedly connected to one side of the slip ring; a wheel seat, which is installed under the assembly plate; a roller a, which is arranged under the wheel seat; a damping sleeve, which is arranged on the outside of the roller a; and a worm, which is arranged at one end of the roller a.

[0012] The detection component also includes: a roller b, which is installed at the lower end of the inner side of the material rack; a pulley a, which is provided at one end of the roller b; a rotating shaft a, which is movably connected to the outer side of the material rack; a worm gear, which is provided at one end of the rotating shaft a; an active bevel gear, which is provided at the other end of the rotating shaft a; a connecting rod, which is fixedly connected to the other side of the slip ring; and a tension plate, which is fixedly connected to the top end of the connecting rod.

[0013] The bonding component includes: a material head plate, which is arranged under the new winding roller; a seesaw, two groups of seesaws are arranged at both ends of the material head plate; a support, which is arranged under the seesaw; a base, which is arranged under the support; a pin, which is arranged on the base; a pin rod, which is arranged at the other end of the seesaw; a heat conduction plate, which is arranged at one end of the material head plate; a negative pressure groove, which is opened above the heat conduction plate; a resistor tube, which is arranged under the heat conduction plate; and a telescopic rod, two groups of the telescopic rods are arranged on the material head plate.

[0014] The new material stamping assembly includes: a top seat a, which is arranged on the unwinding seat; a double-moving die, which is arranged under the top seat a; an annular blade, which is arranged under the double-moving die; a hydraulic cylinder a, which is arranged on the top seat a; a T-shaped bottom die, which is arranged under the double-moving die; a T-shaped slot a, which is opened on the double-moving die; and a crossbeam, which is arranged between the double-moving dies.

[0015] The old material stamping assembly includes: a top seat b, which is arranged on the vertical frame; a T-shaped electrothermal movable mold, which is arranged under the top seat b; a square bottom mold, which is arranged under the T-shaped electrothermal movable mold; a T-shaped slot b, which is opened on the square bottom mold; a bottom groove, which is opened under the square bottom mold; an extrusion groove, which is opened on the inner wall of the T-shaped slot b; a hydraulic cylinder b, which is arranged on the top seat b; a screw rod, two groups of which are arranged on both sides of the top seat b; a nut, which is threadedly connected to the screw rod; a sliding rod, which is arranged on one side of the screw rod; a rotating shaft b, which is arranged at the bottom end of the screw rod; a driven bevel gear, which is arranged at one end of the rotating shaft b; a pulley b, which is arranged at the other end of the rotating shaft b; and a belt.

[0016] The beneficial effects of the present invention are: (1) The present invention detects the contact between the component and the old substrate roll, and automatically triggers the connection and splicing of the new and old substrate rolls when the old substrate roll is consumed. This does not affect manual operation, reduces deviation errors, and greatly improves coating production efficiency.

[0017] (2) The present invention uses a stamping assembly to punch the head and tail of the new and old material rolls respectively, so that a T-shaped head is formed at the head of the material and a T-shaped groove is opened at the tail of the material. The connection effect is improved by splicing the T-shaped structure, and the T-shaped splicing is melted by the resistance structure to improve the splicing effect. At the same time, this splicing method is different from the traditional overlapping glue coating process, so that the thickness of the substrate after splicing is extremely small, reducing the influence of the overlapping thickness change on the subsequent traction coating, and the splicing effect is better than gluing.

[0018] (3) The present invention uses a hydraulic structure to provide power to lift the new substrate roll and trigger power input, and uses an electromagnetic structure to adsorb and fix the bearing without affecting the rotation and unwinding of the roll, thereby ensuring the fixing effect and greatly improving the roll changing efficiency of the device.

[0019] In summary, the present invention has the advantages of being automatic and highly efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side structural schematic diagram of the present invention; Figure 3 Schematic diagram of the coating mechanism structure of the present invention; Figure 4 This is a schematic diagram of the front structure of the unwinding seat of the present invention; Figure 5 This is a schematic diagram of the side structure of the unwinding seat of the present invention; Figure 6 This is a schematic diagram of a partial top view of the roll changing mechanism of the present invention; Figure 7 This is a partial front view structural diagram of the roll changing mechanism of the present invention; Figure 8 This is a schematic diagram of the overall structure of the roll changing assembly of the present invention; Figure 9 This is a schematic diagram of the disassembled structure of the roll changing assembly of the present invention; Figure 10 This is a schematic diagram of the lifting assembly structure of the present invention; Figure 11 This is a schematic diagram of the overall structure of the detection component of the present invention; Figure 12 This is a schematic diagram of the local structure of the detection component of the present invention; Figure 13 This is a schematic diagram of the partial disassembly structure of the detection component of the present invention; Figure 14 This is a schematic diagram of the overall structure of the bonding assembly of the present invention; Figure 15 This is a schematic diagram of the partial structure of the bonding component of the present invention; Figure 16 It is a schematic diagram of the transmission component structure of the present invention; Figure 17 This is a schematic diagram of the overall structure of the new material stamping assembly of the present invention; Figure 18 This is a bottom view of the structure of the new material stamping assembly of the present invention; Figure 19 This is a schematic diagram of the overall structure of the waste material stamping assembly of the present invention; Figure 20 This is a partial bottom view of the structure of the waste material stamping assembly of the present invention; Figure 21 This is a schematic diagram of the lifting component structure of the waste material stamping assembly of the present invention; Figure 22 This is a schematic diagram of the overall structure of the new and old components of the present invention; Figure 23 This is a schematic diagram of the local structure of the new and old components spliced together in the present invention; Figure 24 This is a T-shaped splicing effect diagram of the substrate of the present invention.

[0021] The accompanying drawings of this application are as follows: 1. Main chassis; 2. Coating mechanism; 201. Unwinding seat; 202. Rewinding seat; 203. Coating roller a; 204. Coating member a; 205. Coating roller b; 206. Coating member b; 207. Drying roller; 208. Rewinding roller; 209. Substrate; 3. Reel changing mechanism; 301. Stand; 302. Material rack; 303. Old reel; 304. New reel; 31. Reel changing assembly; 311. Servo motor; 312. Gear a; 313. Bearing; 314. Lifting slot; 315. Gear b; 3 16. Gear c; 317. Electromagnetic seat; 318. Arc-shaped electromagnetic plate; 32. Lifting assembly; 321. Bottom plate; 322. Spacer; 323. Hydraulic equipment; 324. Guide rod; 325. Guide plate; 326. Roller; 33. Detection assembly; 331. Fixed tube; 332. Support plate; 3321. Spring rod; 3322. Spring a; 333. Slip ring; 3331. Inner rod; 3332. Pin head; 3333. Pin seat; 3334. Pin shaft; 334. Slide; 335. Assembly plate; 336. Wheel seat; 3361. Roller Wheel a; 3362, damping sleeve; 3363, worm; 3364, roller b; 3365, pulley a; 3366, rotating shaft a; 3367, worm gear; 3368, driving bevel gear; 337, connecting rod; 338, tension plate; 34, fitting assembly; 341, head plate; 342, seesaw; 3421, support; 3422, base; 3423, pin; 343, pin rod; 344, heat conducting plate; 345, negative pressure groove; 346, resistor tube; 347, telescopic rod; 35, new material stamping assembly; 351, top seat a; 352. Double movable die; 353. Annular blade; 354. Hydraulic cylinder a; 355. T-shaped bottom die; 356. T-shaped slot a; 357. Crossbeam; 36. Old material stamping assembly; 361. Top seat b; 362. T-shaped electric heating movable die; 363. Square bottom die; 3631. T-shaped slot b; 3632. Bottom groove; 3633. Extrusion trough; 364. Hydraulic cylinder b; 365. Screw; 3651. Nut; 3652. Sliding rod; 366. Rotating shaft b; 3661. Driven bevel gear; 3662. Pulley b; 3663. Belt. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0025] Example 1: Figure 1-Figure 24 As shown, this embodiment provides a multi-roller double-sided coating device, including a main box 1, and also includes a coating mechanism 2 arranged on one side of the main box 1, the coating mechanism 2 includes a reeling seat 201 and a reeling seat 202 arranged on one side of the main box 1, and a roll changing mechanism 3 is arranged on the top of the reeling seat 201; the roll changing mechanism 3 includes two groups of vertical frames 301 arranged on the reeling seat 201, and one side of the two groups of vertical frames 301 is provided with a material rack 302, and an old reel 303 and a new reel 304 are provided between the two groups of material racks 302, and the roll changing mechanism 3 also includes a roll changing component 31, a lifting component 32, a detection component 33, a bonding component 34, a new material stamping component 35 and an old material stamping component 36 arranged on the reeling seat 201.

[0026] The roll changing assembly 31 includes: a servo motor 311, which is arranged on the material rack 302; a gear a312, which is arranged at one end of the output shaft of the servo motor 311; a bearing 313, two sets of bearings 313 are respectively installed at both ends of the old roll 303 and the new roll 304; a lifting groove 314, which is opened on the material rack 302; a gear b315, two sets of gears b315 are respectively installed at both ends of the old roll 303 and the new roll 304; a gear c316, which is movably connected to the material rack 302; an electromagnetic seat 317, which is installed at the top of the material rack 302; and an arc-shaped electromagnetic sheet 318, which is embedded in the top of the lifting groove 314.

[0027] In this embodiment, the servo motor 311 is energized to drive the gear a312 to rotate, and the gear b315 and gear c316 are engaged with the gear a312, so that when the new roll 304 rises to the specified position at the top of the material rack 302, it can be driven to complete the unwinding; the electromagnetic seat 317 is energized to give magnetic force to the arc-shaped electromagnetic sheet 318, which contacts the metal bearing 313 through the magnetic force, and can fix it without affecting the rotation and unwinding of the roller body.

[0028] The lifting assembly 32 includes: a base plate 321, which is arranged under the unwinding seat 201; a pad 322, which is movably connected to the base plate 321; a hydraulic device 323, which is installed under the base plate 321; a guide rod 324, which has two groups of guide rods 324 fixedly connected to the base plate 321; a guide plate 325, which is arranged at the rear end of the unwinding seat 201; and rollers 326, which have multiple groups of rollers 326 movably connected to the guide plate 325.

[0029] In this embodiment, the hydraulic device 323 is activated to drive the pad 322 to rise and fall through the output rod to lift the new substrate 209 roll, and multiple groups of rollers 326 on the guide plate 325 facilitate the loading and movement of the substrate 209 roll.

[0030] The detection component 33 includes: a fixed tube 331, which is fixedly connected to the inner side of the material rack 302; a support plate 332, which is arranged under the fixed tube 331; a spring rod 3321, which has two groups of spring rods 3321 arranged on the support plate 332; a spring a3322, which is arranged on the outside of the spring rod 3321; a slip ring 333, which is movably connected to the fixed tube 331; an inner rod 3331, which is fixedly connected under the slip ring 333; a pin head 3332, which is arranged at the bottom end of the inner rod 3331; a pin seat 3333, which is arranged under the pin head 3332; a pin shaft 3334, which is arranged on both sides of the pin head 3332; and a slide groove 334, which has multiple groups of slide grooves 334 opened on the outside of the fixed tube 331.

[0031] The detection component 33 also includes: an assembly plate 335, which is fixedly connected to one side of the slip ring 333; a wheel seat 336, which is installed under the assembly plate 335; a roller a3361, which is arranged under the wheel seat 336; a damping sleeve 3362, which is arranged on the outside of the roller a3361; and a worm 3363, which is arranged at one end of the roller a3361.

[0032] The detection component 33 also includes: a roller b3364, which is installed at the lower end of the inner side of the material rack 302; a pulley a3365, which is arranged at one end of the roller b3364; a rotating shaft a3366, which is movably connected to the outer side of the material rack 302; a worm gear 3367, which is arranged at one end of the rotating shaft a3366; an active bevel gear 3368, which is arranged at the other end of the rotating shaft a3366; a connecting rod 337, which is fixedly connected to the other side of the slip ring 333; and a tension plate 338, which is fixedly connected to the top of the connecting rod 337.

[0033] In this embodiment, the tension plate 338 is arranged above the old roller 303, and is always in contact with the old substrate 209 roll under the tension of the spring a3322 on the two sets of spring rods 3321. Further, following the coating consumption position of the substrate 209, it will gradually decline, and the decline will drive the roller a3361 to decline through the slip ring 333. When the coating of the old roller 303 is completed, the roller a3361 contacts the roller b3364, and the roller b3364 is connected to the gear c316 through the transmission belt. The power of the servo motor 311 drives the worm 3363 on the roller a3361 to rotate through the friction force of the two sets of rollers. At the same time, when it descends to the bottom, the worm 3363 contacts the worm wheel 3367 on the rotating shaft a3366, thereby driving the rotating shaft a3366 to rotate.

[0034] The bonding component 34 includes: a material head plate 341, which is arranged below the new roll 304; a seesaw 342, two groups of seesaws 342 are arranged at both ends of the material head plate 341; a support 3421, which is arranged below the seesaw 342; a base 3422, which is arranged below the support 3421; a pin 3423, which is arranged on the base 3422; a pin rod 343, which is arranged at the other end of the seesaw 342; a heat conducting plate 344, which is arranged at one end of the material head plate 341; a negative pressure groove 345, which is opened above the heat conducting plate 344; a resistor tube 346, which is arranged below the heat conducting plate 344; and a telescopic rod 347, two groups of telescopic rods 347 are arranged on the material head plate 341.

[0035] In this embodiment, the slip ring 333 descends and pushes one end of the seesaw 342 to sink through the inner rod 3331, so that the other end of the seesaw 342 drives the material head plate 341 to rise through the pin rod 343, and further drives the side heat conduction plate 344 and the material head fixed on the heat conduction plate 344 by adsorption through the negative pressure groove 345 to rise and contact with the material tail to complete the patch splicing.

[0036] The new material stamping assembly 35 includes: a top seat a351, which is arranged on the unwinding seat 201; a double movable mold 352, which is arranged under the top seat a351; an annular blade 353, which is arranged under the double movable mold 352; a hydraulic cylinder a354, which is arranged on the top seat a351; a T-shaped bottom mold 355, which is arranged under the double movable mold 352; a T-shaped slot a356, which is opened on the double movable mold 352; and a crossbeam 357, which is arranged between the double movable molds 352.

[0037] The old material stamping assembly 36 includes: a top seat b361, which is arranged on the stand 301; a T-shaped electric heating movable mold 362, which is arranged under the top seat b361; a square bottom mold 363, which is arranged under the T-shaped electric heating movable mold 362; a T-shaped slot b3631, which is opened on the square bottom mold 363; a bottom groove 3632, which is opened under the square bottom mold 363; an extrusion groove 3633, which is opened on the inner wall of the T-shaped slot b3631; a hydraulic cylinder b364, The hydraulic cylinder b364 is arranged on the top seat b361; the screw rod 365, two groups of screw rods 365 are arranged on both sides of the top seat b361; the nut 3651, the nut 3651 is threadedly connected to the screw rod 365; the slide rod 3652, the slide rod 3652 is arranged on one side of the screw rod 365; the rotating shaft b366, the rotating shaft b366 is arranged at the bottom end of the screw rod 365; the driven bevel gear 3661 is arranged at one end of the rotating shaft b366; the pulley b3662, the pulley b3662 is arranged at the other end of the rotating shaft b366; the belt 3663, the belt 3663 is arranged on the pulley b3662.

[0038] In this embodiment, the hydraulic cylinder a354 drives the double movable mold 352 and the annular blade 353 to descend and pass through the T-shaped bottom mold 355 to punch the new coil head, so that the head end forms a T-shaped structure, and the hydraulic cylinder b364 drives the T-shaped electric heating movable mold 362 to descend, and the rotating shaft a3366 rotates and drives the pulley b3662 to rotate through the engagement of the active bevel gear 3368 and the driven bevel gear 3661, and the belt 3663 on the pulley b3662 transmits the power to the screw rod 365, and the screw rod 365 The square bottom mold 363 is driven to rise to the specified position by rotating the connection through the nut 3651 and contacting the T-shaped electric heating movable mold 362 to punch the tail of the old coil, so that a T-shaped groove is opened at the tail end of the coil to match the head end of the new coil, and the head of the new coil is driven to rise through the head plate 341, so that the T-shaped head can enter the T-shaped tail groove for splicing. After splicing, the film material is melted and fixed by the heat generated by the resistance structure in the T-shaped electric heating movable mold 362 and the resistance tube 346 at the bottom of the heat conducting plate 344.

[0039] Example 2: Figure 1-Figure 3 As shown, the components identical or corresponding to those in the first embodiment are designated by the corresponding reference numerals in the first embodiment. For simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that: The coating mechanism 2 also includes a coating roller a203 arranged on the unwinding seat 201, a coating member a204 is arranged below the coating roller a203, a coating roller b205 is arranged on the winding seat 202, a coating member b206 is arranged below the coating roller b205, and multiple groups of drying rollers 207 are also arranged on one side of the main box 1, a winding roller 208 is arranged on the winding seat 202, and a substrate 209 is wound between the winding roller 208 and the multiple groups of rollers.

[0040] In this embodiment, the back side of the substrate 209 is coated through the coating member a204 guided by the coating roller a203, and the front side of the substrate 209 is coated through the coating member b206 guided by the coating roller b205, and after coating, it is dried by resistive heating in multiple groups of drying rollers 207.

[0041] Working steps Step 1, coating process: The back side of the substrate 209 is coated by the coating roller a203 and the coating member a204, and the front side of the substrate 209 is coated by the coating roller b205 and the coating member b206. After coating, the substrate is dried by resistance heating in the multiple sets of drying rollers 207, the old winding roller 303 is unwound, and the winding roller 208 is wound up; Step 2: New coil stamping process: Place the new coil on the pad 322 through the loading equipment, and pass the new coil roller 304 through the new coil and insert it into the material rack 302. Pull one end of the new coil head to the edge of the T-shaped bottom die 355, and reserve a small amount of length beyond the edge. The hydraulic cylinder a354 drives the double movable die 352 and the annular blade 353 to descend and pass through the T-shaped bottom die 355 to stamp the new coil head, so that the head end forms a T-shaped structure. During stamping, the bottom end of the reserved excess material is suspended on the T-shaped bottom die 355 and is stamped by the crossbeam 357 on the double movable die 352. The material at this point will bend downward along the edge of the T-shaped bottom die 355 to pre-store excess material. The T-shaped slug formed by stamping the new roll is pulled onto the heat conducting plate 344 and aligned, and the slug is adsorbed and fixed by the negative pressure groove 345; Step 3, detection process: through the tension of the spring a3322 on the outer side of the two sets of spring rods 3321 on the slip ring 333, the tension plate 338 is always in contact with the top of the old substrate 209 roll. As the coating of the substrate 209 is consumed, the position will gradually decrease. When the old roll is consumed by one circle, the position where the tension plate 338 is lowered just drives the roller a3361 to descend and contact the roller b3364 through the slip ring 333. The roller b3364 is connected to the gear c316 through the transmission belt. The power of the servo motor 311 drives the worm 3363 on the roller a3361 to rotate through the friction force of the two sets of rollers. At the same time, when it descends to the bottom, the worm 3363 contacts the worm wheel 3367 on the rotating shaft a3366, thereby driving the rotating shaft a3366 to rotate, so that the old roll consumption can be mechanically detected, with high stability and sensitive triggering. Step 4, old roll stamping process: When the coating of the substrate 209 on the old roll roller 303 is completed, the rotating shaft a3366 rotates and the engagement of the driving bevel gear 3368 and the driven bevel gear 3661 drives the pulley b3662 to rotate. The belt 3663 on the pulley b3662 transmits the power to the screw rod 365. The screw rod 365 rotates and is connected to the nut 3651 to drive the square bottom mold 363 to the specified position, thereby reducing the wear of the square bottom mold 363 during normal coating. At the same time, the automatic operation reduces the number of manual operations. The hydraulic cylinder b364 drives the T-shaped electric heating movable die 362 to descend and contact the square bottom die 363 to punch the tail of the old coil, so that a T-shaped groove is formed at the tail end of the coil to match the head end of the new coil; Step 5, patch splicing process: the slip ring 333 descends and pushes one end of the seesaw 342 downward through the inner rod 3331, so that the other end of the seesaw 342 drives the material head plate 341 and the T-shaped new coil head fixed on the heat conducting plate 344 to rise through the distribution rod 343. Guided by the telescopic rod 347, the heat conducting plate 344 will enter the bottom groove 3632 under the square bottom mold 363, and the T-shaped material head will pass through the T-slot b3631 and enter the T-slot punched by the old material tail on the square bottom mold 363 to complete the preliminary splicing of the new material head and the old material tail. At the same time, the bent end of the T-shaped material head side is squeezed and enters the splicing position; Step 6, melting process: The film material is melted by the heat generated by the T-shaped electric heating movable mold 362 and the heat conducting plate 344 above the new and old T-shaped splicing parts, and the resistance structure in the T-shaped electric heating movable mold 362 and the resistance tube 346 at the bottom of the heat conducting plate 344 are energized. The film at the splicing part melts and sticks together, and the excess material at the reserved bent end flows along the T-shaped splicing part when it is melted under pressure and overflows from the extrusion groove 3633, thus completing the splicing of the new and old material rolls. This splicing method does not overlap the new and old material rolls, reducing the impact of overlapping on the coating head and the tension adjustment mechanism during coating and pulling, and the splicing is more secure. Step 7, reel replacement and loading process: After the substrate 209 on the old reel 303 is spliced, the old reel 303 is pulled out by the mechanical arm in the main box 1, and the hydraulic device 323 drives the pad 322 to rise, and the new reel 304 and the spliced reel are lifted to the top of the material rack 302. During the lifting process, the limit switch triggers the electromagnetic seat 317 to energize, and the arc-shaped electromagnetic piece 318 generates magnetic force to contact the metal bearing 313, fixing it without affecting the rotation and unwinding of the reel; When lifted to the top, gear b315 rises and engages with gear a312, and the servo motor 311 drives the new roll 304 to rotate for unwinding. At the same time, the winding end is driven to pull the new material through the old material to complete the winding operation, thereby improving production efficiency.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-roller double-sided coating device, comprising a main box (1), characterized in that: Also includes: The coating mechanism (2) is provided on one side of the main housing (1) and is used for coating the front and back sides of the material; A roll changing mechanism (3) is provided on one side of the main housing (1) and is used for automatically changing the material rolls; The coating mechanism (2) comprises a reel-off seat (201) and a reel-off seat (202) provided on one side of the main housing (1); The roll changing mechanism (3) comprises two sets of upright frames (301) arranged on the unwinding seat (201), a material rack (302), an old roll (303) and a new roll (304); The roll changing mechanism (3) further comprises a roll changing assembly (31), a lifting assembly (32), a detection assembly (33), a laminating assembly (34), a new material stamping assembly (35) and an old material stamping assembly (36) arranged on the unwinding seat (201).

2. A multi-roller double-sided coating device according to claim 1, characterized in that: The roll changing assembly (31) comprises a servo motor (311) provided on the material rack (302) and used for switching the positions of the new and old material rolls and driving the unwinding, a gear a (312), a bearing (313), a lifting slot (314), a gear b (315), a gear c (316), an electromagnetic seat (317), and an arc-shaped electromagnetic sheet (318).

3. A multi-roller double-sided coating device according to claim 1, characterized in that: The lifting assembly (32) includes a bottom plate (321) provided under the unwinding seat (201) and used for lifting the new material roll to a driving height, a cushion block (322), a hydraulic device (323), a guide rod (324), a guide plate (325), and a roller (326).

4. The multi-roller double-sided coating device according to claim 1, characterized in that: The detection assembly (33) includes a fixed tube (331) provided on the inner side of the material rack (302) and used to detect the thickness of the old material roll and trigger the subsequent structure, a support plate (332), a spring rod (3321), a spring a (3322), a slip ring (333), an inner rod (3331), a pin head (3332), a pin seat (3333), a pin shaft (3334) and a slide groove (334).

5. The multi-roller double-sided coating device according to claim 4, characterized in that: The detection assembly (33) further includes an assembly plate (335) provided on the slip ring (333) and used for driving and triggering according to the thickness change of the old material roll, a wheel seat (336), a roller a (3361), a damping sleeve (3362) and a worm (3363).

6. The multi-roller double-sided coating device according to claim 1, characterized in that: The detection assembly (33) further includes a roller b (3364), a pulley a (3365), a rotating shaft a (3366), a worm gear (3367), a driving bevel gear (3368), a connecting rod (337), and a tension plate (338), which are arranged at the lower inner end of the material rack (302) and are used to transmit and drive power.

7. The multi-roller double-sided coating device according to claim 1, characterized in that: The laminating assembly (34) comprises a material head plate (341) disposed below the new reel (304) and used for pulling the head and tail of the new and old materials for laminating, a seesaw (342), a support (3421), a base (3422), a pin (3423), a pin rod (343), a heat conducting plate (344), a negative pressure groove (345), a resistance tube (346) and a telescopic rod (347).

8. The multi-roller double-sided coating device according to claim 1, characterized in that: The new material stamping assembly (35) comprises a top seat a (351) provided on the unwinding seat (201) and used for stamping the tail of the new material, a double movable die (352), an annular blade (353), a hydraulic cylinder a (354), a T-shaped bottom die (355), a T-shaped slot a (356), and a crossbeam (357).

9. The multi-roller double-sided coating device according to claim 1, characterized in that: The scrap stamping assembly (36) comprises a top seat b (361) provided on the stand (301) and used for stamping the scrap tail, a T-shaped electrothermal movable die (362), a square bottom die (363), a T-shaped slot b (3631), a bottom groove (3632), an extrusion slot (3633), and a hydraulic cylinder b (364).

10. The multi-roller double-sided coating device according to claim 9, characterized in that: The waste material stamping assembly (36) further includes a screw (365), a nut (3651), a slide rod (3652), a rotating shaft b (366), a driven bevel gear (3661), a pulley b (3662) and a belt (3663) which are arranged on both sides of the top seat b (361) and are used to drive the stamping support structure to rise and fall.

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