PVC decorative film printing equipment

Abstract

The invention discloses pvc decorative film printing equipment, and relates to the field of pvc decorative film processing, the pvc decorative film printing equipment comprises a rack, the upper surface of the rack is uniformly provided with a plurality of vertically through hole grooves to form a hollow surface, a material collecting winding roller is arranged in front of the rack, and a pvc decorative film is flatly laid, is forwards conducted through the hollow surface and is wound by the material collecting winding roller; the two negative pressure disc pieces are symmetrically distributed below the hollowed-out face, the negative pressure disc pieces are close to the edge position of the pvc decorative film, each negative pressure disc piece is provided with a sleeve and a driving framework for rotating and bearing the sleeve, and a plurality of fan shells are distributed around the sleeve in a penetrating mode, and the adsorption path of the rotating fan shells to the pvc decorative film is in an arc shape expanding towards the edge of the pvc decorative film; therefore, the two sets of negative pressure disc pieces apply backward adsorption pulling force expanding towards the two sides to the PVC decorative film, forward winding force of the material collecting winding roller to the PVC decorative film is matched, the PVC decorative film is tensioned and flatly laid on the surface of the hollowed-out face in the forward conduction process, and accurate printing of digital printing equipment is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of PVC decorative film processing, in particular to a PVC decorative film printing device. Background Art

[0002] The printing process of PVC decorative film is mostly completed by digital printing equipment. The PVC base film is transmitted through the digital printing machine, and the printing pattern is selected by computer control. The printing machine prints the corresponding flower pattern on the PVC base film, and then dries and solidifies the printed layer.

[0003] The smoothness of the PVC base film during printing directly affects the quality of PVC decorative film printing. Traditional PVC decorative films only apply tension in the conduction direction to the PVC film during printing, and cooperate with pressure components such as pressure rollers to maintain the flatness of the PVC decorative film. There is a lack of lateral flattening tension on the PVC decorative film, and it is difficult to ensure that the PVC decorative film does not have lateral wrinkles during the conduction process. Summary of the invention

[0004] The purpose of the present invention is to provide a PVC decorative film printing device, which is used to solve the problem that the traditional PVC decorative film only applies tension in the conduction direction to the PVC film during the printing process, cooperates with pressure components such as pressure rollers to maintain the flatness of the PVC decorative film, lacks lateral flattening tension on the PVC decorative film, and is difficult to ensure that the PVC decorative film does not have lateral wrinkles during the conduction process.

[0005] In order to solve the problems existing in the prior art, the technical solution of the present invention is as follows:

[0006] A PVC decorative film printing device comprises a stand, a plurality of vertically penetrating holes and grooves are evenly arranged on the upper surface of the stand to form a hollow surface, a material collecting roller is arranged in front of the stand, and the PVC decorative film is flattened and passed through the hollow surface to be conducted forward and rolled up by the material collecting roller;

[0007] Negative pressure disc, two negative pressure discs are symmetrically distributed below the hollow surface, the negative pressure disc is close to the edge of the PVC decorative film, the negative pressure disc has a sleeve and a driving structure for rotating the sleeve, a plurality of fan shells are distributed around the sleeve, the top of the fan shell is open and close to the bottom of the hollow surface, the sleeve is connected to an air pump, the air pump draws air to form negative pressure in the sleeve and the fan shell, the top of the fan shell absorbs the PVC decorative film through the holes and grooves of the hollow surface, the driving structure drives the sleeve to drive the fan shell to rotate, so that the fan shell absorbs and pulls the PVC decorative film to both sides in an arc path;

[0008] A drying component is arranged between the stand and the collecting roller.

[0009] Preferably, the driving structure includes a sliding body, the sleeve is rotatably installed on the surface of the sliding body, the sleeve is transmission-connected with a rotating motor, a blocking shell is fitted inside the sleeve to block the connection between the fan shell and the sleeve, the blocking shell has a 90° opening, so that the sleeve has a 90° connection angle with the fan shell, and the fan shell is connected to the sleeve during the process of rotating and moving toward the side of the PVC decorative film in the opposite direction of conduction to the PVC decorative film, and the blocking shell and the sliding body remain fixed.

[0010] Preferably, the side surface of the fan shell has a through opening, and a baffle is elastically provided on the inner side of the through opening by a spring, and the baffle is used to block the through opening.

[0011] Preferably, a partition is provided below the stand, a sliding groove is provided on the surface of the partition, the two sliding bodies slide symmetrically in the sliding groove, a first bidirectional screw is rotatably provided on the surface of the partition, and the first bidirectional screw thread passes through the two sliding bodies.

[0012] Preferably, one end of the material collecting roller is transmission-connected to a driving motor, and the other end of the material collecting roller is connected to the shaft end of the air pump via a transmission.

[0013] Preferably, two guide rollers are rotatably arranged on the front side of the stand, and the PVC decorative film bypasses the two guide rollers and is transmitted to the aggregate roll, and the PVC decorative film forms a vertical plane between the two guide rollers. The drying component includes a hard board shell, and flexible belts are symmetrically arranged on both sides of the hard board shell. The plane of the flexible belt and the hard board shell are aligned with the vertical plane of the PVC decorative film, and nozzles are evenly arranged on the surface of the flexible belt and the hard board shell. The hard board shell is connected to a connecting shell, and a heating wire is arranged in the connecting shell, and the exhaust end of the air pump passes through the connecting shell.

[0014] Preferably, winding rollers are symmetrically arranged on both sides of the hard plate shell, and the flexible belt is wound up by the winding rollers. The two ends of the winding rollers are elastically rotatably connected to the carrier seat through a spiral spring, and a second bidirectional screw rod and a sliding rod are respectively arranged above and below the winding roller. The carrier seat at one end of the winding roller slides along the sliding rod, and the carrier seat at the other end of the winding roller is threadedly connected to the second bidirectional screw rod.

[0015] Preferably, the exhaust end of the air pump is connected to the top of the connecting shell, and a cover plate is installed on the inner side of the connecting shell through the elastic rotation of a torsion spring, and a push switch is installed on the lower part of the connecting shell. The push switch is connected to the heating wire, and when the cover is opened, the touch-controlled push switch connects the heating wire circuit.

[0016] Compared with the related art, the present invention has the following beneficial effects:

[0017] 1. The adsorption path of the rotating fan shell on the PVC decorative film of the present invention is an arc shape that expands toward the edge of the PVC decorative film, so that the two groups of negative pressure discs apply an adsorption pulling force that expands backward and to both sides to the PVC decorative film, and cooperate with the forward winding force of the collecting roller on the PVC decorative film, so that the PVC decorative film is tightened and laid flat on the surface of the hollow surface during the forward conduction process, ensuring accurate printing of the digital printing equipment.

[0018] 2. The invention connects the flexible belt through both sides of the hard plate shell to form a jet heating surface aligned with the PVC decorative film. The unfolding width of the flexible belt is adjusted by controlling the winding roller to wind up the flexible belt, so as to adjust the width of the heating surface for PVC decorative films of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is one of the overall structural schematic diagrams of the present invention.

[0020] Figure 2 This is the second schematic diagram of the overall structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the negative pressure disc installation structure of the present invention.

[0022] Figure 4 This is one of the schematic diagrams of the negative pressure disc structure of the present invention.

[0023] Figure 5 This is the second schematic diagram of the negative pressure disc structure of the present invention.

[0024] Figure 6 It is a schematic diagram of the structure of the retaining shell limiting sleeve penetrating the fan shell of the present invention.

[0025] Figure 7 The present invention is a path diagram for the fan shell to move and adsorb the PVC decorative film.

[0026] Figure 8 This is one of the schematic diagrams of the drying component structure of the present invention.

[0027] Fig. 9 This is the second schematic diagram of the drying component structure of the present invention.

[0028] Fig.10 It is a schematic diagram of the heating wire switch control of the present invention.

[0029] Figure numerals: 1. Stand; 11. Hollow surface; 12. Guide roller; 2. Aggregate roller; 3. Air pump; 4. Negative pressure disc; 41. Sliding body; 42. Rotating motor; 43. Casing; 44. Fan shell; 45. Baffle shell; 46. Through port; 47. Baffle; 5. Partition; 51. First bidirectional screw rod; 52. Slide groove; 6. Drying component; 61. Hard plate shell; 62. Flexible belt; 63. Winding roller; 64. Second bidirectional screw rod; 65. Sliding rod; 66. Nozzle; 67. Connecting shell; 68. Cover plate; 69. Push switch; 610. Heating wire. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] like Figure 1 , Figure 2 As shown, the PVC decorative film printing equipment is based on a stand 1, and the digital printing equipment is arranged across the top of the stand 1. A plurality of vertical through holes and grooves are evenly arranged on the upper surface of the stand 1 to form a hollow surface 11. The PVC decorative film is transmitted from the back of the stand 1 to the front. During the transmission process, the PVC decorative film is flat against the hollow surface 11. A collection roller 2 is rotatably installed in front of the stand 1. One end of the collection roller 2 is connected by a driving motor. A drying component 6 is arranged between the stand 1 and the collection roller 2. After the PVC decorative film is digitally printed on the hollow surface 11, it is dried and cured by the drying component 6 and then rolled up by the collection roller 2.

[0032] like Figure 2-7 As shown, two negative pressure discs 4 are symmetrically arranged below the hollow surface 11, and the negative pressure discs 4 are close to the edge of the PVC decorative film, so that the PVC decorative film covers half of the area of ​​the negative pressure discs 4. The negative pressure discs 4 have a sleeve 43, and the driving structure includes a sliding body 41. The sleeve 43 is rotatably mounted on the surface of the sliding body 41, and the rotating motor 42 is fixed to the sliding body 41. The rotating motor 42 is connected to the sleeve 43 through a gear set, and a plurality of fan shells 44 are distributed around the sleeve 43. The top of the fan shell 44 is open and close to the bottom of the hollow surface 11. The inner part of the sleeve 43 is fitted with a stopper shell 45 for blocking the fan shell 44 from communicating with the sleeve 43. The stopper shell 45 has a 90° opening, so that the sleeve 43 has a 90° connection angle with the fan shell 44. The fan shell 44 is connected with the sleeve 43 in the process of rotating and moving in the opposite direction of the conduction of the PVC decorative film and toward the side of the PVC decorative film. The stopper shell 45 and the sliding body 41 remain fixed, and the air inlet end of the air pump 3 is connected with the sleeve 43.

[0033] During the PVC decorative film printing process, the air pump 3 is turned on to evacuate air, so that negative pressure is formed in the sleeve 43, and the rotating motor 42 is turned on at the same time to drive the sleeve 43 and the fan shell 44 to rotate. The two sleeves 43 rotate in opposite directions and are blocked and restricted by the blocking shell 45. When the fan shell 44 reaches the surface of the PVC decorative film and the rotation tangent of the fan shell 44 is parallel to the conduction direction of the PVC decorative film, the fan shell 44 penetrates the sleeve 43. At this time, the negative pressure at the top of the fan shell 44 penetrates the hollow surface 11 to adsorb the PVC decorative film, and then the fan shell 44 rotates in the opposite direction of the conduction of the PVC decorative film to adsorb the PVC decorative film. The adsorption path is an arc shape that expands toward the edge of the PVC decorative film, so that the two groups of negative pressure discs 4 apply an adsorption pulling force to the PVC decorative film that expands backward and to both sides, and cooperate with the forward winding force of the collecting roller 2 on the PVC decorative film, so that the PVC decorative film is stretched and laid flat on the surface of the hollow surface 11 during the forward conduction process, so as to ensure the precise printing of the digital printing equipment;

[0034] When the fan shell 44 rotates outward and moves to the edge of the PVC decorative film, the connection between the fan shell 44 and the sleeve 43 is blocked by the blocking shell 45, the adsorption force of the fan shell 44 disappears, and several circularly rotating fan shells 44 form a continuous and stable adsorption pulling force on the PVC decorative film, ensuring that the PVC decorative film is smoothly conducted on the surface of the hollow surface 11.

[0035] like Figure 6 As shown, the side of the fan shell 44 has a through hole 46, and the inner side of the through hole 46 is provided with a baffle 47 by spring elasticity, and the baffle 47 is used to block the through hole 46. When the fan shell 44 penetrates the hollow surface 11 to adsorb the PVC decorative film, the negative pressure in the fan shell 44 continues to increase, and the negative pressure causes the baffle 47 to gradually overcome the elastic force and open, so that the outside air enters the fan shell 44 through the through hole 46 to balance the excessive negative pressure. The fan shell 44 maintains a stable negative pressure strength to avoid fatigue damage to the air pump 3 caused by excessive negative pressure.

[0036] like Figure 3 As shown, a partition 5 is fixed under the stand 1, and a laterally extending slide groove 52 is provided on the surface of the partition 5. Two slides 41 slide symmetrically in the slide groove 52, and a first bidirectional screw rod 51 is rotatably installed on the surface of the partition 5. The first bidirectional screw rod 51 threads through the two slides 41. The two slides 41 are driven to move synchronously along the slide groove 52 by rotating the first bidirectional screw rod 51, so as to adjust the distribution spacing of the two negative pressure disks 4, and to adapt to PVC decorative films of different widths for adsorption and fixation during the printing process.

[0037] The operation of drying and curing PVC decorative film printing is as follows:

[0038] like Figure 1 , Figure 8 , Fig. 9As shown, two guide rollers 12 are rotatably arranged at the front side of the stand 1, and the PVC decorative film bypasses the two guide rollers 12 and is transmitted to the collecting roll 2, and the PVC decorative film forms a vertical plane between the two guide rollers 12, and the drying component 6 includes a hard plate shell 61, and flexible belts 62 are symmetrically arranged on both sides of the hard plate shell 61, and the planes of the flexible belts 62 and the hard plate shell 61 are aligned with the vertical plane of the PVC decorative film, and nozzles 66 are evenly provided on the surfaces of the flexible belts 62 and the hard plate shell 61, and the hard plate shell 61 is connected to a connecting shell 67, and a heating wire 610 is arranged in the connecting shell 67, and the exhaust end of the air pump 3 passes through the connecting shell 67;

[0039] The gas discharged by the air pump 3 enters the connecting shell 67, and the gas is heated by the electric heating wire 610 and enters the hard plate shell 61 and the flexible belt 62, and then is evenly sprayed on the surface of the PVC decorative film through the nozzle 66, which is used to dry and solidify the printed layer of the PVC decorative film, so that the PVC decorative film can be directly rolled up by the collection roller 2 later.

[0040] like Figure 8 , Fig. 9 As shown, two winding rollers 63 are symmetrically arranged on both sides of the hard plate shell 61, and the flexible belts 62 on both sides are wound by the winding rollers 63. The two ends of the winding rollers 63 are elastically rotatably connected to the carrier seat through the spiral spring. The upper and lower parts of the winding rollers 63 are respectively provided with a second bidirectional screw rod 64 and a sliding rod 65. The carrier seat at one end of the winding roller 63 slides along the sliding rod 65, and the carrier seat at the other end of the winding roller 63 is threadedly connected with the second bidirectional screw rod 64.

[0041] Rotate the second bidirectional screw rod 64 to drive the two winding rollers 63 to expand or move closer along the sliding rod 65, so that the winding rollers 63 release or wind up the flexible belt 62, and adjust the unfolded width of the flexible belt 62 to make the unfolded width of the flexible belt 62 match the width of the surface formed by the hard board shell 61 and the PVC decorative film. The drying range can be conveniently adjusted according to the PVC decorative films of different widths.

[0042] like Figure 1 As shown, the shaft end of the air pump 3 is connected to the end of the collecting roller 2 through a transmission. When the driving motor drives the collecting roller 2 to reel in the PVC decorative film, the air pump 3 is automatically turned on to draw air to the negative pressure disk 4 to perform negative pressure flattening work. At the same time, the air pump 3 supplies air to the drying component 6 to perform drying work. When the collecting roller 2 stops reeling in the PVC decorative film, the air pump 3 stops working, and the negative pressure flattening work and the drying work are automatically stopped synchronously, thereby achieving an automatic coordination effect between the work processes.

[0043] like Fig.10 As shown, the exhaust end of the air pump 3 is connected to the top of the connecting shell 67, and a cover plate 68 is installed on the inner side of the connecting shell 67 through a torsion spring elastic rotation, and a push switch 69 is installed at the lower part of the connecting shell 67, and the push switch 69 is connected to the heating wire 610;

[0044] When the air pump 3 delivers gas to the connecting shell 67, the air pressure causes the cover 68 to rotate downward to open the air path. When the cover 68 is opened, the touch-press switch 69 connects the circuit of the heating wire 610 to heat the gas. When the air pump 3 stops delivering gas to the connecting shell 67, the cover 68 elastically returns to its original position and the circuit of the heating wire 610 is automatically cut off to prevent overheating of the heating wire 610 in the absence of airflow.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PVC decorative film printing device, characterized in that: include: A stand (1), wherein a plurality of vertically penetrating holes and grooves are evenly arranged on the upper surface of the stand (1) to form a hollow surface (11), and a material collecting roller (2) is arranged in front of the stand (1), and the PVC decorative film is spread flat and passed through the hollow surface (11) to be conducted forward and rolled up by the material collecting roller (2); A negative pressure disc (4), wherein two negative pressure discs (4) are symmetrically distributed below the hollow surface (11), the negative pressure disc (4) is close to the edge of the PVC decorative film, the negative pressure disc (4) comprises a sleeve (43) and a driving structure for rotatably carrying the sleeve (43), a plurality of fan shells (44) are distributed through the sleeve (43), the top of the fan shell (44) is open and closely attached to the bottom of the hollow surface (11), the sleeve (43) is connected to an air pump (3), the air pump (3) draws air to form negative pressure in the sleeve (43) and the fan shell (44), the top of the fan shell (44) absorbs the PVC decorative film through the holes and grooves of the hollow surface (11), the driving structure drives the sleeve (43) to drive the fan shell (44) to rotate, so that the fan shell (44) absorbs and pulls the PVC decorative film to both sides in an arc path; A drying component (6), wherein the drying component (6) is arranged between the stand (1) and the material collecting roller (2).

2. The PVC decorative film printing equipment according to claim 1, characterized in that: The driving structure comprises a sliding body (41), the sleeve (43) is rotatably mounted on the surface of the sliding body (41), the sleeve (43) is transmission-connected to a rotating motor (42), a blocking shell (45) is fitted inside the sleeve (43) to block the fan shell (44) from communicating with the sleeve (43), the blocking shell (45) has a 90° opening, so that the sleeve (43) has a 90° connection angle with the fan shell (44), and the fan shell (44) is connected with the sleeve (43) in the process of rotating and moving in the opposite direction of conduction to the PVC decorative film and toward the side of the PVC decorative film, and the blocking shell (45) and the sliding body (41) are kept fixed.

3. The PVC decorative film printing equipment according to claim 2, characterized in that: The fan housing (44) has a through opening (46) on its side, and a baffle (47) is provided on the inner side of the through opening (46) by means of spring elasticity, and the baffle (47) is used to block the through opening (46).

4. The PVC decorative film printing equipment according to claim 2, characterized in that: A partition (5) is arranged below the stand (1), and a slide groove (52) is provided on the surface of the partition (5). The two slide bodies (41) slide symmetrically in the slide groove (52). A first bidirectional screw rod (51) is rotatably arranged on the surface of the partition (5), and the first bidirectional screw rod (51) is threadedly penetrated through the two slide bodies (41).

5. The PVC decorative film printing equipment according to claim 1, characterized in that: One end of the material collecting roller (2) is transmission-connected to a driving motor, and the other end of the material collecting roller (2) is connected to the shaft end of the air pump (3) via a transmission.

6. The PVC decorative film printing equipment according to claim 1, characterized in that: Two guide rollers (12) are rotatably arranged at the front side of the stand (1), and the PVC decorative film bypasses the two guide rollers (12) and is transmitted to the collecting roller (2). The PVC decorative film forms a vertical plane between the two guide rollers (12). The drying component (6) includes a hard plate shell (61), and flexible belts (62) are symmetrically arranged on both sides of the hard plate shell (61). The planes of the flexible belts (62) and the hard plate shell (61) are aligned with the vertical plane of the PVC decorative film. Nozzles (66) are evenly arranged on the surfaces of the flexible belts (62) and the hard plate shell (61). The hard plate shell (61) is connected to a connecting shell (67), and a heating wire (610) is arranged in the connecting shell (67). The exhaust end of the air pump (3) passes through the connecting shell (67).

7. The PVC decorative film printing equipment according to claim 6, characterized in that: Winding rollers (63) are symmetrically arranged on both sides of the hard plate shell (61), and the flexible belt (62) is wound by the winding rollers (63). The two ends of the winding rollers (63) are elastically rotatably connected to the carrier seat through a spiral spring. A second bidirectional screw rod (64) and a sliding rod (65) are respectively arranged above and below the winding roller (63). The carrier seat at one end of the winding roller (63) slides along the sliding rod (65), and the carrier seat at the other end of the winding roller (63) is threadedly connected to the second bidirectional screw rod (64).

8. The PVC decorative film printing equipment according to claim 6, characterized in that: The exhaust end of the air pump (3) is connected to the top of the connecting shell (67), and a cover plate (68) is installed on the inner side of the connecting shell (67) through a torsion spring to elastically rotate. A push switch (69) is installed at the bottom of the connecting shell (67), and the push switch (69) is connected to the heating wire (610). When the cover plate (68) is opened, the touch-controlled push switch (69) connects the circuit of the heating wire (610).

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