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CN-117001732-B - Decorative film production molding treatment process

CN117001732BCN 117001732 BCN117001732 BCN 117001732BCN-117001732-B

Abstract

The invention discloses a decorative film production molding treatment process, which belongs to the technical field of decorative film processing and comprises the following steps of S1, feeding, namely, feeding raw materials into a feeding box above the front end of a frame of a calender, crushing and heating to melt the raw materials through a crushing roller, S2, calendaring, namely, feeding the melted raw materials into the space between two horizontal calendaring rollers above the front end of the frame, forming a sheet-shaped film through the extrusion action of the two horizontal calendaring rollers, sequentially passing through two vertical calendaring rollers at the lower side to form a required decorative film sheet under the extrusion and expansion actions of the calendaring rollers, and simultaneously, driving fan blades on a backflow pipe to rotate so as to ventilate the decorative film passing through, combine air cooling and water cooling, and improve the cooling molding effect of the decorative film, and conveying the cut off surplus edges into the feeding box through a trimming mechanism to be mixed, crushed, heated and melted and then reused.

Inventors

  • ZHANG XIANG
  • ZHANG ZHENGHUI
  • Han Lujin
  • GU YUHUA

Assignees

  • 江苏海美新材料有限公司

Dates

Publication Date
20260508
Application Date
20230625

Claims (5)

  1. 1. A process for producing and shaping decorative film is characterized by comprising the following steps: S1, feeding, namely inputting raw materials into a feeding box (3) above the front end of a frame (25) of a calender (2), crushing by a crushing roller (31), and heating to melt; S2, rolling, namely enabling the melted raw materials to enter between two horizontal rolling rollers (21) at the upper side of the front end of a frame (25), forming a sheet-shaped film through the extrusion action of the two horizontal rolling rollers (21), and then sequentially passing through two vertical rolling rollers (21) at the lower side, and forming a required decorative film sheet under the extrusion and extension actions of the rolling rollers (21); S3, cooling, namely enabling the sheet-shaped decorative film to pass through a space between cooling rollers (22) at the front side of the horizontal part of the frame (25), and cooling and shaping the decorative film through the cooling effect of the cooling rollers (22); S4, trimming, namely conveying the cooled and shaped decorative film sheet between two conveying rollers (24) at the rear side of the frame (25), cutting off the left and right edges of the decorative film by the cutting action of a trimming mechanism (6), and conveying the cut edges to a feeding box (3) again to be mixed with raw materials, and crushing, heating, melting and recycling the raw materials by a crushing roller (31); In the step S1, the feeding box (3) is positioned above the L-shaped frame body at the front end of the frame (25), the front side and the rear side of the feeding box (3) are fixedly connected with the frame (25) through support plates (5), and a lower end blanking opening of the feeding box (3) is funnel-shaped and is aligned with a gap position between two horizontal calendaring rollers (21); In the step S1, the calender (2) comprises a frame (25), calender rolls (21), cooling rolls (22), conveying rolls (24) and pressing rolls (23), wherein a bottom plate (1) is fixedly connected below the frame (25), the number of the calender rolls (21) is four, and the four calender rolls (21) are respectively and rotatably connected to the inner side of an L-shaped frame body at the front end of the frame (25) in an L shape; A plurality of cooling rollers (22) are symmetrically connected to the front side of the horizontal part of the frame (25) in an up-down rotation way; Two conveying rollers (24) are rotatably connected to the rear side of the frame (25) at the same level as the lower layer cooling roller (22), and a trimming mechanism (6) is arranged between the two conveying rollers (24); Two press rolls (23) are correspondingly connected with the inner side of a frame (25) above the conveying rolls (24) in a rotating way; two crushing rollers (31) are symmetrically connected to the left and right inner walls of the inside of the feeding box (3) in a front-back rotation mode, and heating wires in a spiral structure are buried in the positions, close to the outer edges, of the inside of the crushing rollers (31); the inside of the cooling roller (22) is in a cylindrical cavity structure, the roller shafts on the left side and the right side of the cooling roller (22) are provided with water inlets penetrating into the cooling roller, and the roller shafts on the left side and the right side of the cooling roller (22) respectively penetrate to the left side and the right side of the frame (25) and are rotationally connected with rotary joints (45); A water tank (4) with a U-shaped cross section is placed on a bottom plate (1) below a lower side cooling roller (22), a water pump (41) is fixedly connected in the left side tank body of the water tank (4), the upper end of a water pipe (42) of the water pump (41) extends to a position flush with a rotary joint (45) and is communicated with a water collecting pipe (43), a plurality of shunt pipes (44) are communicated with the right side surface of the water collecting pipe (43) corresponding to the rotary joint (45), and the shunt pipes (44) are respectively communicated with the rotary joint (45) on the left side roller shaft of the upper side cooling roller (22); a return pipe (46) is respectively communicated with the left side roller shaft of the cooling roller (22) at the lower side, the pipe orifice of the return pipe (46) is respectively extended into the box body at the right side of the water tank (4), and a rotary joint (45) on the right side roller shaft of the cooling roller (22) at the upper side is respectively communicated with the rotary joint (45) on the roller shaft of the cooling roller (22) at the lower side through a communication pipe (48); The part of the return pipes (46) below the cooling roller (22) at the lower side is in a horizontal state, each return pipe (46) is rotatably connected with a rotating shaft (471), and the lower end of each rotating shaft (471) penetrates into the return pipe (46) and is fixedly connected with an impeller (473); The annular outer surface of the rotating shaft (471) above the return pipe (46) is sleeved with a sleeve ring (472), the lower end of the sleeve ring (472) is fixedly connected with the return pipe (46), and the upper ends of the rotating shaft (471) are fixedly connected with fan blades (47).
  2. 2. The process for producing and shaping the decorative film according to claim 1, wherein the edge cutting mechanism (6) comprises a transverse plate (61), the transverse plate (61) is symmetrically arranged between the frame (25) and the water tank (4), a knife rest (611) with an L-shaped structure is symmetrically and fixedly connected to the inner side of the right end of the transverse plate (61), the upper ends of the knife rest (611) are fixedly connected with a cutter (612), and the cutter (612) is positioned between the two conveying rollers (24); The front end and the rear end of the lower end face of the transverse plate (61) are fixedly connected with sliding blocks (613), and the upper end face of the bottom is correspondingly provided with sliding grooves (614) for the sliding blocks (613) to slide; And three supporting rods (615) are horizontally and equidistantly penetrated through the part of the transverse plate (61) positioned at the water tank (4), and the left end and the right end of each supporting rod (615) are fixedly connected with the inner side wall of the water tank (4) respectively.
  3. 3. The decorative film production molding treatment process according to claim 2, wherein the rear ends of the upper end surfaces of the transverse plates (61) are fixedly connected with vertical plates (64) of L-shaped structures, the vertical plates (64) are positioned on the front sides of L-shaped frame bodies at the front ends of the frames (25) and are fixedly connected with limiting blocks (641) in bilateral symmetry, limiting plates (642) are fixedly connected to the front sides of the L-shaped frame bodies at the front ends of the frames (25), limiting grooves (643) matched with the limiting blocks (641) are formed in the front sides of the limiting plates (642), and a plurality of groups of guide rollers (62) are respectively and symmetrically and equidistantly rotated and connected on the inner sides of the transverse plates (61) and the vertical plates (64).
  4. 4. A decorative film production molding process according to claim 3, wherein the horizontal portion of the vertical plate (64) extends above the feed box (3), a driving roller (652) is rotatably connected above the inner side front side of the horizontal portion of the vertical plate (64), a driven roller (654) is rotatably connected below the driving roller (652), a cutting roller (656) is rotatably connected to the rear side of the driving roller (652), and a fixed roller (658) is fixedly connected below the cutting roller (656); The roll shaft of the driving roll (652) penetrates to the outer side of the vertical plate (64) and is fixedly connected with a main gear (651), the rear side of the roll shaft of the driven roll (654) penetrates to the outer side of the vertical plate (64) and is fixedly connected with a first auxiliary gear (653), the first auxiliary gear (653) is meshed with the main gear (651), the vertical plate (64) above the main gear (651) is fixedly connected with a second motor (65) through a hanging plate, and an output shaft of the second motor (65) is fixedly connected with the center position of the outer side surface of the main gear (651); The roller shaft of the cutting roller (656) penetrates to the outer side of the vertical plate (64) and is fixedly connected with a second pinion (655), the second pinion (655) is meshed with the main gear (651), and the annular outer surface of the cutting roller (656) is fixedly connected with a cutting strip (657).
  5. 5. The process for producing and forming the decorative film according to claim 4, wherein a first motor (631) is fixedly connected to the center of the upper end face of the bottom plate (1) below the inner side face of the front end of the transverse plate (61), an adjusting gear (63) is fixedly connected to an output shaft of the first motor (631), two toothed plates (632) are symmetrically meshed with the centers of the front side and the rear side of the adjusting gear (63), and the toothed plates (632) are fixedly connected with the lower ends of the inner side faces of the two transverse plates (61) respectively.

Description

Decorative film production molding treatment process Technical Field The invention relates to the technical field of decorative film processing, in particular to a decorative film production molding treatment process. Background The material of the decorative film is mainly PVC, and is generally formed by calendaring with a calender, namely, plasticized thermoplastic plastics close to viscous flow temperature are passed through a series of horizontal roller gaps which rotate oppositely, so that the material is extruded and stretched to form a laminar product with certain thickness, width and smooth surface. The existing decorative film needs to cut redundant burrs on two sides of the formed decorative film in the forming and forming process to improve the quality of the decorative film, and the existing decorative film is mostly collected by placing collecting boxes on two sides of a calender in the cutting process, the boxes on two sides need to temporarily use the space of a production field, the occupied area is large, and meanwhile, the phenomenon that the edges are piled up at cutting positions is recovered and exist, so that the cutting operation of the edges is influenced. The utility model provides a decorative film side cut excess material recovery unit of current patent (bulletin number: CN 212218664U) includes along decorative film width direction distribution and be located the recovery tube of decorative film below, the recovery tube is the horizontal distribution and the both ends of recovery tube extend to the both sides limit of decorative film outward, one end of recovery tube is equipped with the air-blower, the other end of recovery tube is uncovered and the air-blower is bloied to the uncovered end of recovery tube, be equipped with first pan feeding mouth near the one end upside of air-blower at the recovery tube, be equipped with the second pan feeding mouth near the one end upside of uncovered at the recovery tube. The application has the advantages of compact structure and improved feed back efficiency. This decorating film side cut clout recovery unit, though can improve feed back efficiency, but the cutting size of balance can not be adjusted, and the balance that the cutting got off still collects through the collecting box, does not directly utilize, and the waste resource still needs to reprocess the balance of collecting in the follow-up, consumes the labour. Disclosure of Invention 1. Technical problem to be solved Aiming at the problems existing in the prior art, the invention aims to provide a decorative film production and molding treatment process which can delay the speed of cooling water backflow, simultaneously drive fan blades on a backflow pipe to rotate so as to ventilate, air-cool and water-cool the passing decorative film, and improve the cooling and molding effects of the decorative film, and the cut off surplus edges can be conveyed into a feeding box through a trimming mechanism to be mixed with raw materials, crushed, heated and melted and then reused. 2. Technical proposal In order to solve the problems, the invention adopts the following technical scheme. A decorative film production and molding treatment process comprises the following steps: S1, feeding, namely inputting raw materials into a feeding box above the front end of a frame of a calender, crushing by a crushing roller, and heating to melt; S2, rolling, namely enabling the melted raw materials to enter between two horizontal rolling rollers at the upper side of the front end of the frame, forming a sheet-shaped film through the extrusion action of the two horizontal rolling rollers, then sequentially passing through two vertical rolling rollers at the lower side, and forming a required decorative film sheet under the extrusion and extension actions of the rolling rollers; S3, cooling, namely enabling the lamellar decorative film to pass through the space between cooling rollers at the front side of the horizontal part of the frame, and cooling and shaping the decorative film through the cooling effect of the cooling rollers; And S4, trimming, namely conveying the cooled and shaped decorative film sheet between two conveying rollers at the rear side of the frame, cutting off the left and right edges of the decorative film by the cutting action of a trimming mechanism, and conveying the cut edges to a feeding box again to be mixed with raw materials, and crushing, heating, melting and recycling the raw materials by a crushing roller. Further, in the step S1, the calender includes a frame, calender rolls, cooling rolls, a transfer roll and a press roll, wherein a bottom plate is fixedly connected below the frame, the number of the calender rolls is four, the four calender rolls are respectively and rotatably connected to the inner side of an L-shaped frame body at the front end of the frame in an L shape, and a plurality of cooling rolls are symmetrically and rotatably connected to the front side of t