CN111300948B - Composite production line for plates - Google Patents

Abstract

The invention discloses a plate composite production line, which comprises the following steps: the feeding system, the front turning plate system connected with the feeding system, the composite system connected with the front turning plate system and the discharging system connected with the composite system. The compound system comprises three-face compound equipment, tracking and cutting equipment connected with the three-face compound equipment, a four-corner positioning and cutting device connected with the tracking and cutting equipment through a first steering conveying roller set, and five-face compound equipment directly connected with the four-corner positioning and cutting device. The three-face compounding device is used for bonding the rolled composite film with the surface and two side faces of the plate, the tracking cutting device is used for cutting the composite films at two ends of the plate to reserve the composite films for compounding the five faces by a preset length at two ends of the plate, the four-corner positioning cutting device is used for cutting the redundant composite films at two ends of the plate to cut the composite films into a shape suitable for compounding the five faces, and the five-face compounding device is used for pressing the composite films at two ends of the plate with the two end faces of the plate.

Description

Composite production line for plates

Technical Field

The invention relates to the technical field of composite board production equipment, in particular to a production line of composite boards.

Background

The processing process of the plates for building or furniture such as wood boards and gypsum boards is usually to stick films on the surfaces of the plates, and the surface sticking of the plates can improve the performances of the plates, such as moisture resistance, water resistance, fire resistance, flame retardance, high temperature resistance, deformation resistance and the like, and can also make the plates more attractive and have appreciation value.

The film pasting production process of the plate is complicated and complicated, so that automatic production is difficult to realize completely, and many operations need to be completed manually, which means that the film pasting process needs to stop the production line for manual intervention for many times and cannot be continuously produced, and the defects of long production period, high production cost and low production efficiency of the plate are caused. Meanwhile, the sheet material and the film paper are combined to have the problem that the control is difficult, for example, the film pasting effect is poor due to the position deviation of the film paper, or the film paper is accumulated on the surface of the sheet material to cause fold influence on the quality of the sheet material, so that the film paper is easy to fall off in the application process, the attractiveness of the sheet material is influenced, even the service life of the sheet material is influenced, the surface of the sheet material is damaged due to improper force application control in the laminating process of the film paper and the sheet material, and the sheet material becomes a waste sheet material.

Meanwhile, the existing plate film pasting processing is to paste the composite film on the decoration surface and the side surfaces of two sides of the plate, and the plate produced by the film pasting mode has the problem that the end surface joint of the adjacent plate is not attractive enough in the use process, so that the overall design layout of the plate used as a decorative plate is affected.

Disclosure of Invention

In order to solve the technical problems, the invention provides a plate composite production line, which has high automation efficiency, the produced plate and the composite film are high in laminating degree and better in quality, and the surface, the two side surfaces and the two end surfaces of the plate are laminated with the composite film, so that the aesthetic degree of the plate is further improved.

According to one aspect of the present invention, there is provided a sheet composite production line comprising: the feeding system, the front overturning device connected with the feeding system for overturning the plate to the front upwards, the composite system connected with the front overturning device for uncoiling the coiled composite film and pressing the composite film onto the plate, and the discharging system connected with the composite system; the feeding system conveys the plate into a production line, the front panel turnover equipment detects the upper surface of the plate and turns the plate with the decorative surface facing downwards to the decorative surface upwards, and the composite system sequentially presses the composite film onto the decorative surface, the side surfaces of the two sides and the end surfaces of the two sides of the plate and then feeds the plate through the feeding system; the compound system comprises three-face compound equipment, tracking and cutting equipment, a first steering conveying roller set, a four-corner positioning and cutting device and five-face compound equipment which are sequentially arranged along the direction of the production line. The three-face compound equipment comprises a front conveying crawler, a rear conveying crawler, a pressing device arranged at the boundary of the front conveying crawler and the rear conveying crawler, a film rolling air expansion shaft arranged above the pressing device and used for placing compound film coiled materials, a glue scraping device which is arranged close to the film rolling air expansion shaft and connected with a hot melt adhesive machine, and a primary film cutting mechanism arranged at two sides of the feeding end of the rear conveying crawler. The coiled material on the coiled film air expansion shaft is uncoiled and then is conveyed to a glue scraping device, the glue scraping device coats hot melt glue on the back surface of the composite film, the composite film is conveyed to the direction of a pressing device through a conveying roller after being scraped by the glue scraping device, a plate is conveyed to the junction of a front conveying crawler belt and a rear conveying crawler belt, the back surface of the composite film coated with the hot melt glue is attached to the surface of the plate, the plate is continuously conveyed forwards to drive the composite film to enter the pressing device, the pressing device presses the composite film and the surface of the plate, the plate is conveyed to the rear conveying crawler belt to press the two sides of the plate with the composite film, side rolling wheel sets are arranged on the two sides of the rear conveying crawler belt respectively roll the composite film on the two sides of the plate, after the side rolling of the plate is finished, a primary film cutting mechanism cuts the composite film on the two sides of the tail of the plate material, and cuts the composite film on the same width of the plate; the tracking cutting equipment comprises a frame, a tail detection switch arranged at the feeding end of the frame and a tracking cutting machine which spans the frame, wherein the tracking cutting machine comprises a guide rail which spans the frame and is arranged at a preset included angle with the conveying direction of the plate and a blade which is connected with the guide rail and is arranged towards the conveying surface of the frame, the blade is connected with a cutting cylinder, the tail detection switch is in signal connection with the cutting cylinder, the tail detection switch detects that the plate material tail sends a cutting signal to the cutting cylinder, and the cutting cylinder drives the blade to move from the first end of the guide rail to the second end of the guide rail to cut a composite film of the plate material tail; the first steering conveying roller set comprises a conveying rack, a plurality of conveying rollers, a steering photoelectric detection switch and a steering conveying mechanism, wherein the conveying rollers are arranged on the conveying rack in parallel, the steering conveying mechanism comprises a supporting base, a bracket and a plurality of conveying belts arranged on the bracket, and each conveying belt is positioned between two adjacent conveying rollers, is parallel to the conveying rollers and is connected with a driving motor; the conveying direction of the conveying belt is perpendicular to the conveying direction of the conveying roller, the steering photoelectric detection switch detects that the plate sends a stop signal to the conveying roller, the conveying roller stops in a positioning way, the driving motor drives the conveying belt to drive the conveying belt to steer and convey the plate to the four-corner positioning cutting device; the four-corner positioning and cutting device comprises a positioning conveyor, four-corner film cutting mechanisms respectively arranged at four vertex angles of the positioning conveyor, a photoelectric detection switch and an electric control unit which are arranged on the positioning conveyor, wherein the electric control unit is respectively connected with the positioning conveyor, the four-corner film cutting mechanisms and the photoelectric detection switch in a signal manner; the photoelectric detection switch detects that the plate enters the positioning conveyor to send detection signals to the electric control unit, the electric control unit sends stop instructions to the positioning conveyor and simultaneously sends cutting instructions to the four-corner film cutting mechanism, and after the positioning conveyor stops positioning, the four-corner film cutting mechanism cuts off redundant composite films on the side face of the plate and the composite films folded and pressed to the bottom face of the plate. The five-sided compounding equipment comprises a hot air gun set arranged on two sides of a feeding end and end rolling wheel sets arranged on two sides, wherein the hot air gun set comprises two groups of hot air guns arranged on two sides of the front end of the five-sided compounding equipment, the hot air guns spray hot air towards the end face of the plate to heat hot melt adhesive on the back of the composite film, and the end rolling wheel sets are respectively arranged on two sides of the five-sided compounding equipment to roll the composite film on the end face of the plate.

Optionally, the side rolling wheel set on two sides of the rear conveying track of the three-sided composite device comprises a plurality of upper rolling wheels, a plurality of upper flanging rolling wheels, a plurality of side rolling wheels, a plurality of lower flanging rolling wheels and a plurality of lower rolling wheels which are sequentially arranged along the conveying direction of the plate.

Optionally, the primary film cutting mechanism comprises a cutting positioning roller, a blade arranged above the cutting positioning roller and facing the cutting positioning roller, and a turnover cylinder in driving connection with the blade; the primary film cutting mechanism is arranged according to the width of the plate, the plate enters the rear conveying crawler belt, and the side surface of the plate is conveyed forwards by being attached to the cutting positioning roller; the two sides of the feeding end of the rear conveying crawler belt are respectively provided with a primary film cutting photoelectric detection switch connected with a primary film cutting mechanism in a signal manner, the primary film cutting photoelectric detection switch is connected with a turnover cylinder of the primary film cutting mechanism in a signal manner, the primary film cutting photoelectric detection switch is used for detecting a plate signal and sending the plate signal to the turnover cylinder, the turnover cylinder cannot receive the plate signal to rotate downwards, and a blade cuts a composite film connected with the tail of a plate material and the head of the next plate material to cut the composite film into the same width as the plate material; the overturning cylinder receives the plate signal and rotates upwards, and the blade is lifted.

Optionally, the tracking cutter of the tracking cutting device comprises a guide rail, a lifting mechanism, a cutting cylinder, a blade and a driving cylinder, wherein the guide rail is arranged across the frame at a preset included angle with the conveying direction of the plate, the cutting cylinder is connected with the lifting mechanism, the blade is connected with the cutting cylinder, and the driving cylinder is connected with the guide rail; the lifting mechanism is arranged in the guide rail, the driving cylinder is arranged at one end of the guide rail and is connected with the tail detection switch through signals, the tail detection switch detects that the tail of the plate material sends a tail feeding signal to the driving cylinder, and the driving cylinder drives the guide rail to slide so as to drive the lifting mechanism to move from the first end of the guide rail to the second end of the guide rail; the cutting cylinder is connected with the tail detection switch signal, the tail detection switch detects that the tail of the plate material sends a tail feeding signal to the cutting cylinder, and the cutting cylinder drives the lifting mechanism to lift up and down so as to adjust the distance between the blade and the plate material to adapt to the thickness of the plate material.

Optionally, the four-corner film cutting mechanism of the four-corner positioning cutting device comprises a bottom plate, a first positioning block, a second positioning block and a cutting blade, wherein the first positioning block comprises an end surface positioning surface, the second positioning block comprises a side surface positioning surface and a cutting positioning surface, the end surface positioning surface of the first positioning block is perpendicular to the side surface positioning surface of the second positioning block and is on the same plane with the cutting positioning surface of the second positioning block, the cutting blade is arranged against the cutting positioning surface of the second positioning block, and the cutting blade and the cutting motor are connected to move forwards or backwards along the cutting positioning surface under the driving of the cutting motor; the photoelectric detection switch detects that the plate enters the positioning conveyor to send detection signals to the electric control unit, the electric control unit sends a stop instruction to the positioning conveyor and simultaneously sends a cutting instruction to the four-corner film cutting mechanism, after the positioning conveyor stops positioning, the end face positioning face of the positioning block I of the four-corner film cutting mechanism abuts against the end face of the plate, the side face positioning face of the positioning block II abuts against the side face of the plate, the cutting motor drives the cutting blade to move forwards along the cutting positioning face of the positioning block II to cut the redundant composite film on the side face of the plate and the redundant composite film folded and pressed to the bottom face of the plate, and the cutting blade is contacted with the positioning block I to cut the plate.

Optionally, the front panel turnover device comprises a roller structure frame, a first roller way, a second roller way, two groups of pressing devices and a panel turnover cylinder, wherein the first roller way and the second roller way are installed in the roller structure frame and are conveyed in the same direction in an upper layer and a lower layer, the two groups of pressing devices and the panel turnover cylinder are respectively arranged on the first roller way and the second roller way, after the panel enters the second roller way and is conveyed to a preset position, the first roller way and the second roller way stop conveying and simultaneously extend out to fix the panel, the panel turnover cylinder drives the roller structure frame to integrally rotate, the roller structure frame rotates by 180 degrees, the positions of the first roller way and the second roller way are turned over, the weight of the panel falls on the turned first roller way, the pressing devices retract, and the panel is continuously conveyed forwards.

Optionally, the device further comprises a rear flap device arranged between the composite system and the blanking system, the rear flap device is connected with the five-sided composite device of the composite system through a second steering conveying roller set, and the rear flap device is connected with the blanking system.

Optionally, the second steering conveying roller set comprises a second conveying frame, a plurality of transverse conveying rollers arranged on the second conveying frame in parallel, a second steering photoelectric detection switch arranged on the second conveying frame, and a second steering conveying mechanism, wherein the second steering conveying mechanism comprises a supporting base, a bracket and a plurality of longitudinal conveying belts arranged on the bracket, and each longitudinal conveying belt is positioned between two adjacent transverse conveying rollers, is parallel to the transverse conveying rollers and is connected with a second driving motor; the conveying direction of the longitudinal conveying belt is perpendicular to the conveying direction of the transverse conveying rollers, the plate enters the second steering conveying roller group to be conveyed on the longitudinal conveying belt, the second steering photoelectric detection switch detects that the plate sends a stop signal to the longitudinal conveying belt, the longitudinal conveying belt stops in a positioning mode, the second driving motor drives the transverse conveying rollers to drive, and the transverse conveying rollers steer and convey the plate to the rear turnover plate equipment.

Optionally, the front panel turnover device is provided with an induction sensor for identifying the decorative surface of the panel, the induction sensor detects that the decorative surface of the panel faces downwards to send a panel turnover signal to a panel turnover cylinder, the pressing device stretches out to fix the panel, and the panel turnover cylinder drives the roller structure frame to integrally rotate so as to turn over the panel to the decorative surface upwards.

Optionally, a counting sensor is arranged on the rear panel turnover device, and the rear panel turnover device turns over once every other panel.

According to the plate composite production line, plate feeding, plate composite and plate discharging are automatically completed, manual intervention operation is not needed in the whole process, manual operation is replaced by automation, the automation degree of the whole system is improved, and the production line can continuously produce and improve the working efficiency of processing.

The composite system of the plate composite production line of the invention attaches the composite films to the five sides, the front side, the two side surfaces and the two end surfaces of the plate, thereby solving the problem that the joint is not beautiful enough when the plate is used.

The composite board production line is full-automatic continuous production, is especially suitable for deep processing requirements and material properties of paper-surface gypsum boards, and processes common paper-surface gypsum boards into high-quality decorative boards.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 is a schematic view of a plate compounding line in an embodiment of the present invention;

FIG. 2 is a schematic diagram of a loading system;

fig. 3 is a schematic view of the structure of the front flap device;

fig. 4 is a side view of the front flap device;

FIG. 5 is a schematic diagram of a three-sided composite device;

fig. 6 is a top view of the front flap device;

FIG. 7 is a schematic view of a lamination device of a three-sided composite apparatus;

FIG. 8 is a process diagram of a side roller set of a three-sided compounding device rolling a composite film;

FIG. 9 is a schematic view of a process of cutting a composite film by a primary film cutting mechanism;

FIG. 10 is a schematic view of the primary film cutting mechanism of the three-sided composite apparatus;

FIG. 11 is a top view of a primary film cutting mechanism of the three-sided composite device;

FIG. 12 is a schematic view of the structure of the tracking cutting device;

FIG. 13 is a top view of the tracking cutting device;

FIG. 14 is a schematic view of the structure of the tracking cutter;

FIG. 15 is a schematic view of the connection of the cutter cylinder and blade of the tracking cutter;

FIG. 16 is a schematic view of the structure of a primary diverting conveyor roller set;

FIG. 17 is a schematic view of a four corner positioning cutting device;

FIG. 18 is a schematic view of a four corner film cutting mechanism of the four corner positioning cutting device;

FIG. 19 is a position layout of a first positioning block and a second positioning block of the four-corner film cutting mechanism;

FIG. 20 is a schematic view of a first positioning block of the first embodiment;

FIG. 21 is a schematic view of a first positioning block of the second embodiment;

FIG. 22 is a schematic view of a sheet entering a four corner locating cutting device;

FIG. 23 is a drawing of a cutting process of the four corner positioning cutting device;

FIG. 24 is a comparative view of a sheet material before and after being cut by a four corner positioning cutting device;

FIG. 25 is a schematic view of a slit film width adjustment mechanism;

FIG. 26 is a schematic view of an end roll apparatus;

FIG. 27 is a process diagram of an end roll nip roll sequentially rolling a composite film;

FIG. 28 is a schematic view of a second diverting conveyor roll set;

FIG. 29 is a schematic view of a blanking system;

fig. 30 is a schematic view of a cleaning apparatus.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. It should be noted that, in the case of no conflict, the embodiments of the present application and the feature vectors in the embodiments may be arbitrarily combined with each other.

As shown in fig. 1, a plate compounding line includes: the feeding system, the front panel turnover device 108 connected with the feeding system for turning the panel to the front upward, the composite system connected with the front panel turnover device 108 for uncoiling the coiled composite film and pressing the composite film onto the panel, and the discharging system connected with the composite system. The compound system comprises three-face compound equipment 111, a tracking and cutting equipment 112, a first steering conveying roller set 117, a device four-corner positioning and cutting device 130 and five-face compound equipment 118 which are sequentially arranged along the direction of a production line.

As shown in fig. 2, the feeding system includes an automatic feeder 101, a feeding table 102, an automatic feeder 103, a feeding table 104, a gantry feeder 105, and an automatic feeder 106. The automatic feeding machine 101 is connected with the feeding workbench 102, the automatic feeding machine 103 is connected with the feeding workbench 104, the feeding workbench 102 and the feeding workbench 104 are respectively arranged on two sides of the automatic feeding machine 106, and the gantry feeding machine 105 is arranged above the automatic feeding machine 106 transversely across the feeding workbench 102, the automatic feeding machine 106 and the feeding workbench 104. The negative pressure suction cup which can be used for sucking up the plate is arranged on the gantry feeder 105, the gantry feeder 105 can lift up and down to suck up and put down the plate, the gantry feeder 105 can horizontally move to move the plate from the feeding workbench 102 or the feeding workbench 104 to the automatic feeder 106, and the automatic feeder 106 conveys the plate to the front turning plate device 108.

As shown in fig. 3 and 4, the front panel turnover device 108 includes a roller frame 1080, a first roller table 1081, a second roller table 1082, two groups of pressing devices 1083 and a panel turnover cylinder 1084, wherein the first roller table 1081 and the second roller table 1082 are installed in the roller frame 1080 and are conveyed in the same direction in the upper layer and the lower layer, the two groups of pressing devices 1083 and the panel turnover cylinder 1084 are respectively arranged on the first roller table 1081 and the second roller table 1082, when the panel enters the second roller table 1082 and is conveyed to a preset position, the roller table stops conveying, the pressing devices 1083 of the first roller table 1081 extend to fix the panel, the panel turnover cylinder 1084 drives the roller frame 1080 to rotate clockwise or anticlockwise, the roller frame 1080 rotates 180 degrees, the positions of the first roller table 1081 and the second roller table 1082 are turned over, the weight of the panel falls on the turned first roller table 1081, the pressing devices 1083 retract, and the panel continues to convey forwards. Preferably, the front panel turnover 108 is provided with an inductive sensor 1085 for identifying the decoration surface of the panel, the inductive sensor 1085 detects that the decoration surface of the panel faces downwards and sends a panel turnover signal to the panel turnover cylinder 1084, the pressing device 1083 stretches out to fix the panel, and the panel turnover cylinder 1084 drives the roller frame 1080 to integrally rotate so as to turn the panel over to the decoration surface. Preferably, be provided with limit structure on roller structure frame 1080, roller structure frame rotates 180, and limit structure blocks roller structure frame 1080, and roller structure frame 1080 stops the rotation, and the one-time board that turns over is accomplished, under this condition, has guaranteed that the panel that gets into combined system is all decorative surface up.

As shown in fig. 5 and 6, the three-sided composite apparatus 111 includes a front conveying track 1111, a rear conveying track 1113, a pressing device 1112 provided at a boundary between the front conveying track 1111 and the rear conveying track 1113, a film winding air shaft 1114 provided above the pressing device for placing a composite film roll, a doctor blade 1115 provided adjacent to the film winding air shaft 1114 and connected to the hot melt adhesive machine 129, and a primary cutting mechanism 600 provided at both sides of a feed end of the rear conveying track 1113.

The coil stock on the coiled film air expansion shaft 1114 is spread and uncoiled and then is conveyed to the scraping device 1115, the scraping device 1115 coats hot melt adhesive on the back surface of the composite film, the composite film is conveyed to the laminating device 1112 through the conveying roller after being scraped by the scraping device 1115, the plate is conveyed to the junction of the front conveying crawler 1111 and the rear conveying crawler 1113, the back surface of the composite film coated with the hot melt adhesive is attached to the surface of the plate, the plate continuously conveys forward to drive the composite film to enter the laminating device 1112, the laminating device 1112 presses the composite film and the surface of the plate, the plate is conveyed to the rear conveying crawler 1113 to press the two sides of the plate with the composite film, the side rolling wheel sets 01 are arranged on the two sides of the rear conveying crawler 1113 to roll the composite film on the two sides of the plate respectively, and after the side rolling of the plate is finished, the primary film cutting mechanism 600 cuts the composite film on the two sides of the tail of the plate material, and cuts the composite film on the tail of the plate material to be equal width.

Preferably, as shown in fig. 7, the pressing device 1112 includes a bottom pressing wheel 020 on the same horizontal line with the front conveying crawler 1111 and the rear conveying crawler 1113, and an upper pressing wheel 021 disposed above the bottom pressing wheel 020, the upper pressing wheel 021 and the bottom pressing wheel 020 are driven at the same speed in the same direction, the upper pressing wheel 021 can adjust the distance between the upper pressing wheel 021 and the bottom pressing wheel 020 in a lifting manner, the plate drives the composite film to enter the lifting space of the pressing device 1112 for forward conveying, and the upper pressing wheel 021 controls the pressure applied to the surface of the plate by adjusting the distance between the upper pressing wheel 021 and the bottom pressing wheel 020 so as to press the composite film on the upper surface into a whole.

Preferably, as shown in fig. 8, the side roller sets 01 at both sides of the rear conveyor track 1113 of the three-sided composite apparatus 111 include a plurality of upper roller wheels 011, a plurality of upper hemming roller wheels 012, a plurality of side roller wheels 013, a plurality of lower hemming roller wheels 014, and a plurality of lower roller wheels 015, which are sequentially disposed along the sheet conveying direction. Preferably, the side roller sets 01 at both sides of the rear conveyor track 1113 of the three-sided composite apparatus 111 include 2 to 5 upper roller sets 011, 2 to 5 upper hemming roller sets 012, 5 to 10 side roller sets 013, 2 to 5 lower hemming roller sets 014, and 2 to 5 lower roller sets 015, which are sequentially disposed along the sheet conveying direction. The sheet material passes through the rear conveying caterpillar 1113, passes through the side rolling wheel set 01, presses the composite films on the two sides of the sheet material to the side surface of the sheet material, and presses the composite film with the side surface length exceeding the thickness of the sheet material to the bottom surface of the sheet material.

As shown in fig. 9, a primary film cutting photoelectric detection switch 700 is respectively provided on both sides of the feed end of the rear conveying track 1113 of the three-sided complex apparatus 111, and is signal-connected to the primary film cutting mechanism 600. The primary film cutting mechanism 600 includes a cutting positioning roller 660 disposed against a side surface of the plate, a blade 670 disposed above the cutting positioning roller 660 and facing the cutting positioning roller, and a turning cylinder 680 in driving connection with the blade 670. The primary film cutting photoelectric detection switch 700 is arranged below the primary film cutting mechanism 600 and is used for detecting a plate signal and sending the plate signal to the turning cylinder 680 of the primary film cutting mechanism 600, the turning cylinder 680 receives the upward rotation of the plate signal, the blade lifts 670, the turning cylinder 680 cannot receive the plate signal, the turning cylinder 680 rotates downwards, the blade 670 falls down, and the plate tail is cut into a composite film connected with a plate head behind a production line, so that the composite film is cut into the same width as the plate.

As a preferred embodiment, as shown in fig. 10 and 11, the primary film cutting mechanism 600 includes a base plate 610, a telescopic mechanism provided on the base plate 610, and a lifting cutting assembly connected to the telescopic mechanism; the telescopic mechanism comprises a guide rail 620 arranged on the bottom plate 610, a sliding block 625 assembled in the guide rail 620, a push rod 630 with one end connected with the push sliding block 625 and used for pushing the sliding block 625 to move, a spring telescopic rod 640 connected with the sliding block 625 and a limiting block 650 connected with the spring telescopic rod 640, wherein a cutting positioning roller 660 and an upward extending connecting plate 655 are arranged above the limiting block 650; the other end of the push rod 630 forms a pushing handle, and the pushing handle is rotated to push the sliding block 625 to move back and forth on the guide rail 620 so as to adjust the distance between the two primary film cutting mechanisms 600 to adapt to the width of the plate. The lifting cutting assembly comprises a blade 670, a turnover cylinder 680 and a blade fine adjustment screw 690, wherein the turnover cylinder 680 is arranged above the cutting positioning roller 660 and is rotationally connected with the blade fine adjustment screw 690, the blade 670 is arranged on the turnover cylinder 680, the other end of the blade fine adjustment screw 690 penetrates through a connecting plate 655 to form a fine adjustment handle 695, and the turnover cylinder 680 can be adjusted up and down by rotating the fine adjustment handle 695 so as to adjust the distance from the turnover cylinder 680 to the cutting positioning roller 660 to adapt to the height of a plate. The spring telescoping rod 640 is used to accommodate the width deviation of the sheet material or the displacement deviation of the sheet material during the conveying process, so that the blade 670 can be accurately positioned and arranged with the side edge of the sheet material.

As shown in fig. 12 and 13, the tracking cutter 112 includes a frame 210, a tail detection switch 250 disposed at a feeding end of the frame, and a tracking cutter 220 disposed across the frame 210, the tracking cutter 220 including a guide rail 221 disposed across the frame 210 at a predetermined angle with respect to a sheet conveying direction, and a blade 224 disposed toward a conveying surface of the frame 210 and connected to the guide rail 221, the blade 224 being connected to a cutter cylinder 223, the tail detection switch 250 being in signal connection with the cutter cylinder 223, the tail detection switch 250 detecting that the sheet material tail is transmitting a cutting signal to the cutter cylinder 223, the cutter cylinder 223 driving the blade 224 to move from a first end 221-1 of the guide rail 221 to a second end 221-2 of the guide rail to cut a composite film of the sheet material tail.

As shown in fig. 14, the tracking cutter 220 includes a guide rail 221, a lifting mechanism 222, a cutting cylinder 223 connected with the lifting mechanism 222, a blade 224 connected with the cutting cylinder 223, and a driving cylinder 226 connected with the guide rail 221, wherein the lifting mechanism 222 is disposed in the guide rail 221, the cutting cylinder 223 drives the lifting mechanism 222 to lift up and down to adjust the height of the blade 224 from the conveyor, and the driving cylinder 226 is disposed at one end of the guide rail 221 and is in driving connection with the guide rail 221 to drive the guide rail 221 to slide to drive the lifting mechanism 222 to move between a first end 221-1 and a second end 221-2 of the guide rail 221. The tail detection switch 250 is in signal connection with the driving cylinder 226, under the condition that the tail detection switch 250 detects that the tail of the plate enters the feeding end of the conveyor to send a tail signal to the tracking cutter 220, after the tracking cutter 220 receives the tail signal, the driving cylinder 226 drives the lifting mechanism 222 to travel from the first end 221-1 to the second end 221-2 of the guide rail 221 according to speed data, the cutting cylinder 223 is in signal connection with the tail detection switch 250, the tail detection switch 250 detects that the tail of the plate sends the tail signal to the cutting cylinder 223, and the cutting cylinder 223 drives the lifting mechanism 222 to lift up and down so as to adjust the distance between the blade 224 and the plate to adapt to the thickness of the plate.

As one non-limiting embodiment, the composite film of the tail of sheet material cut by the trace cutter 220 reserves a composite film 3-5 cm longer than the thickness of the sheet material at the tail of the sheet material.

The conveyor is provided with a speed sensor 280 for detecting the conveying speed of the plate, and the speed sensor 280 is in signal connection with the driving cylinder 226 to transmit the conveying speed of the plate to the driving cylinder 226. The speed sensor 280 detects the conveying speed of the plate material, converts the conveying speed into speed data, sends the speed data to the driving cylinder 226, and the driving cylinder 226 drives the lifting mechanism 222 to advance at the same speed as the plate material, so that the blade 224 and the plate material are relatively static, and under the condition, the composite film of the tail of the plate material cut by the tracking cutting device is flush and smooth.

More preferably, the guide rail 221 of the tracking cutter 220 is disposed laterally above the conveyor at an angle of 25 degrees to the conveying direction of the conveyor.

As one non-limiting embodiment, as shown in fig. 14, the elevating mechanism 222 includes a support bar 001 provided in the guide rail 221 and connected to the guide rail 221, a fixing plate 002 connected to the support bar 001, a screw nut 003 provided on the fixing plate 002, and an elevating screw 004 threaded through the screw nut 003 and the screw nut 003, the elevating screw 004 and the cutting cylinder 223 being connected to be elevated up and down along the screw nut 003 by the driving of the cutting cylinder 223.

As shown in fig. 15, one end of the cutting cylinder 223 is provided with a rotating shaft 008, the blade 224 is sleeved on the rotating shaft 008, the cutting cylinder 223 drives the rotating shaft 008 to rotate so as to drive the blade 224 to rotationally cut the composite film, and the blade 224 is a circular blade. Under this condition, the blade 224 rotates to cut the composite film, and the edge of the cut composite film is flat and has no burr.

As shown in fig. 16, the first diverting conveyor roller set 117 includes a conveyor frame 171, a plurality of conveyor rollers 172 disposed in parallel on the conveyor frame 171, a diverting photoelectric detection switch 173, and a diverting conveyor mechanism including a support base, a bracket, and a plurality of conveyor belts 175 disposed on the bracket, each conveyor belt 175 being disposed between two adjacent conveyor rollers 172 in parallel with the conveyor rollers 172 and connected to a driving motor (not shown). The conveying direction of the conveying belt 175 is perpendicular to the conveying direction of the conveying roller 172, the turning photoelectric detection switch 173 detects that the plate material sends a stop signal to the conveying roller 172, the conveying roller 172 stops positioning, the driving motor drives the conveying belt 175 to drive, and the conveying belt 175 turns and conveys the plate material to the four-corner positioning cutting device 130.

As shown in fig. 17, the four-corner positioning and cutting device 130 includes a positioning conveyor 300, four-corner film cutting mechanisms 400 respectively disposed at four corners of the positioning conveyor 300, a photoelectric detection switch 310 disposed on the positioning conveyor 300, and an electronic control unit (not shown) which is in signal connection with the positioning conveyor 300, the four-corner film cutting mechanisms 400, and the photoelectric detection switch 310, respectively; the photoelectric detection switch 310 detects that the plate enters the positioning conveyor 300 and sends detection signals to the electric control unit, the electric control unit sends a stop instruction to the positioning conveyor 300 and simultaneously sends a cutting instruction to the four-corner film cutting mechanism 400, and after the positioning conveyor 300 stops positioning, the four-corner film cutting mechanism 400 cuts off redundant composite films on the side face of the plate and the composite films folded and pressed to the bottom face of the plate. The photoelectric detection switch 310 is located in the middle of the input end of the positioning conveyor 300 and is located lower than the conveying surface of the positioning conveyor 300.

As shown in fig. 18 and 19, the four-corner film cutting mechanism 400 includes a base plate 410, a first positioning block 420, a second positioning block 430 and a cutting blade 440, wherein the first positioning block 420 includes an end surface positioning surface 421, the second positioning block 430 includes a side surface positioning surface 431 and a cutting positioning surface 435, the end surface positioning surface 421 of the first positioning block 420 is perpendicular to the side surface positioning surface 431 of the second positioning block 430 and is in the same plane as the cutting positioning surface 435 of the second positioning block 430, the cutting blade 440 is disposed against the cutting positioning surface 435 of the second positioning block 430, and the cutting blade 440 and the cutting motor 450 are connected to move forward or backward along the cutting positioning surface 435 under the driving of the cutting motor 450.

As shown in fig. 22-24, the sheet material from the first turning conveying roller set 117 enters the four-corner film cutting mechanism 400, the photoelectric detection switch 310 detects that the sheet material sends a detection signal to the electric control unit, the electric control unit sends a stop instruction to the positioning conveyor 300 and simultaneously sends a cutting instruction to the four-corner film cutting mechanism 400, the sheet material stops positioning on the positioning conveyor 300, two end faces of the sheet material, which are not pressed by the composite film, are respectively abutted against the end face positioning face 421 of the first positioning block 420, two side faces of the sheet material, which are pressed by the composite film, are abutted against the side face positioning face 431 of the second positioning block 430, the cutting blade 440 is arranged towards the top corner of the side face of the sheet material, the cutting motor 450 drives the cutting blade 440 to walk forwards along the cutting positioning face 435 of the second positioning block 430, and cutting is completed after the cutting blade 440 touches the first positioning block 420.

Preferably, the first positioning block 420 further includes a protecting surface 425 disposed opposite to the end surface positioning surface 421, and the protecting surface 425 is higher than the end surface positioning surface 421. Under this condition, when the sheet positioning stops on the repositioning conveyor 300, the composite film falling above the protective surface 425 of the positioning block one 420 is lifted by the protective surface 425, preventing the blade edge from touching the composite film on the sheet end surface when the cutting blade 440 cuts the composite film. For example, in the first embodiment, as shown in fig. 20, the first positioning block 420 is a trapezoid body gradually rising from the end surface positioning surface 421 to the protection surface 425, or in the second embodiment, as shown in fig. 21, the first positioning block 420 includes two parts, i.e., a positioning part and a protection part higher than the positioning part.

As shown in fig. 17 and 25, as a preferred embodiment, two ends of the positioning conveyor 300 are respectively provided with a group of film cutting width adjusting mechanisms 330, the film cutting width adjusting mechanisms 330 comprise two width adjusting guide rails 331 which are arranged in parallel, two sides of each of the two width adjusting guide rails 331 are respectively provided with a width adjusting screw rod 332, the width adjusting screw rods 332 are parallel to the width adjusting guide rails 331 and are arranged between the two width adjusting guide rails 331, one opposite ends of the two width adjusting screw rods 332 are respectively connected with a mounting plate 333, the mounting plates 333 are connected with the two width adjusting guide rails 331 through a sliding block 334, each mounting plate 333 is provided with a set of four-corner film cutting mechanisms 400, and the mounting plates 333 are pushed by the width adjusting screw rods 332 to move along the width adjusting guide rails 331 so as to push the four-corner film cutting mechanisms 400 to move on the width adjusting guide rails 321 in a opposite direction or a reverse direction so as to adapt to the width of a plate to be cut. Preferably, the other end of the width adjustment screw 332 is formed as a width adjustment handle 335, and the width adjustment handle 335 is rotated to push the width adjustment screw 332 to move so as to adjust the distance between the two mounting plates 333.

More preferably, the first end 311 of the positioning conveyor 300 is provided with a film cutting length adjustment mechanism 340, the film cutting width adjustment mechanism 330 provided at the first end 311 of the positioning conveyor is provided on the film cutting length adjustment mechanism 340 in sliding connection with the film cutting length adjustment mechanism 340, and the film cutting width adjustment mechanism 330 provided at the second end 312 of the positioning conveyor 300 is fixedly provided on the positioning conveyor 300.

Preferably, as shown in fig. 18, two parallel positioning rails 470 are installed at the bottom of the bottom plate 410 of the four-corner film cutting mechanism 400, two sets of pulleys 480 are installed at the bottom of the bottom plate 410, the pulleys 480 can move in the positioning rails 470, the bottom plate 410 and the positioning cylinder 490 are connected to move along the positioning rails 470 under the driving of the positioning cylinder 490, the positioning rails 470 of the four-corner film cutting mechanism 400 are fixedly installed on the mounting plates 333 of the film cutting width adjusting mechanism 330, and after the plate is positioned and stopped on the positioning conveyor 300, the four-corner film cutting mechanism 400 is driven to move towards the plate by the positioning cylinder 490.

As shown in fig. 26 and 27, the end rolling device 800 includes two sets of rolling wheel sets respectively disposed on two sides of the frame 180, each set of rolling wheel set includes a top edge folding roller 820, a face rolling roller 830, a bottom edge folding roller 840 and a bottom rolling roller 850 sequentially disposed along the direction of the production line, the plate rolls the composite film on two edges of the upper surface of the plate through the surface rolling roller 810 more firmly, the top edge folding roller 820 inclines at a first predetermined angle with the horizontal plane, the plate rolls the composite film on two sides of the plate down to the end surface of the plate through the top edge folding roller 820, the face rolling roller 830 rolls the composite film on the end surface of the plate, the bottom edge folding roller 840 rolls the composite film with two ends of the plate beyond the thickness of the plate to the bottom surface of the plate at a second predetermined angle with the horizontal plane, and the bottom rolling roller 850 rolls the composite film folded to the bottom surface of the plate. Preferably, along the direction of the production line, each roller is correspondingly connected with a fastener for adjusting the pressure applied by the roller, and the fastener adjusts the pressure of the roller by adjusting the position of the roller.

As a preferred embodiment, each set of roller sets includes 2-5 surface rollers 810, 2-5 top hemming rollers 820, 10-25 end rollers 830, 2-5 bottom hemming rollers 840 and 5-10 bottom rollers 850 sequentially arranged along the sheet conveying direction, wherein 10-25 end rollers 830 are sequentially arranged from top to bottom on the sheet end face in the sheet conveying direction, and 5-10 bottom rollers 850 are sequentially arranged from the outside of the sheet bottom in the sheet conveying direction.

As an alternative implementation mode, in the actual operation process, the secondary heating device can select a hot air gun group, each hot air gun group comprises 2-4 hot air guns which spray hot air towards the end face of the plate material to relieve hot melt adhesive on the composite film and enable the hot air gun to restore the adhesive property, and the temperature of the hot air sprayed by the hot air guns is 60-80 ℃. Preferably, the secondary heating means is a plurality of heating pipes uniformly arranged at both ends of the five-sided composite device 118.

Preferably, further comprising a rear flap device 121 arranged between the compounding system and the blanking system, the sheet material is fed from the five-sided compounding device 118 to the second diverting conveyor roller set 119 and then via the conveyor 120 into the rear flap device 121.

As shown in fig. 28, the second steering conveying roller set 119 includes a second conveying frame 191, a plurality of lateral conveying rollers 192 disposed in parallel on the second conveying frame 191, a second steering photoelectric detection switch 193 disposed on the second conveying frame 191, and a second conveying mechanism, the second lifting mechanism includes a support base, a bracket, and a plurality of longitudinal conveying belts 195 disposed on the bracket, each longitudinal conveying belt 195 is disposed between two adjacent lateral conveying rollers 192, parallel to the lateral conveying rollers 192, and connected to a second driving motor, and a conveying direction of the longitudinal conveying belt 195 is perpendicular to a conveying direction of the lateral conveying rollers 192. The sheet material enters the second turning conveying roller group 119 to be conveyed on the longitudinal conveying belt 195, the second turning photoelectric detection switch 193 detects that the sheet material sends a stop signal, the longitudinal conveying belt 195 stops positioning, the second driving motor drives the transverse conveying rollers 192 to drive, and the transverse conveying rollers 192 turn and convey the sheet material to the conveyor 120 and then enter the rear flap device 121 through the conveyor 120.

The rear panel turnover device 121 may rotate 180 degrees to turn the board, the rear panel turnover device 121 is provided with a counting sensor, and the rear panel turnover device 121 turns according to the counting interval of the counting sensor, for example, in an actual operation process, the rear panel turnover device 121 may be selected to turn only when the second counting sensor counts as a single number or turn only when the second counting sensor counts as a double number.

As shown in fig. 29, the discharging system includes an automatic discharging machine 123, a gantry discharging machine 124, a discharging table 125, an automatic discharging machine 126, a discharging table 127, and an automatic discharging machine 128. The automatic discharging machine 123 is connected with the rear panel turnover device 121 through the conveyor 122, the discharging workbench 125 is arranged on one side of the automatic discharging machine 123, the automatic discharging machine 126 is in transmission connection with the discharging workbench 125 to convey the upper plate of the discharging workbench 125, the discharging workbench 127 is arranged on the other side of the automatic discharging machine 123, the automatic discharging machine 128 is in transmission connection with the discharging workbench 127 to convey the upper plate of the discharging workbench 127, and the gantry discharging machine 124 spans the discharging workbench 125, the automatic discharging machine 123 and the discharging workbench 127 are arranged above the automatic discharging machine 123. The gantry blanking machine 124 can be lifted up and down and horizontally moved, and the gantry blanking machine 124 is provided with a negative pressure sucker gantry blanking machine 124.

As a non-limiting embodiment three, as shown in fig. 30, a conveyor 109 is further provided between the front flap device 108 and the three-sided compounding device 111 of the compounding system, and a cleaning device 110 is provided on the conveyor, preferably, the cleaning device 110 includes a disc brush, a roller brush, and a dust collecting hood provided toward the surface of the board to collect dust, under which condition the cleaning device 110 removes gypsum cake or composites on the surface of the board to press the composite film on the board before the board enters the compounding system. .

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional identical elements in an article or apparatus that comprises the element.

The above embodiments are only for illustrating the technical scheme of the present invention, not for limiting the same, and the present invention is described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the present invention is intended to be covered by the scope of the appended claims.

Claims (10)

1. The utility model provides a panel composite production line which characterized in that includes: the feeding system, the front panel turnover device (108) connected with the feeding system for turning the panel to the front side upwards, the composite system connected with the front panel turnover device (108) for uncoiling the coiled composite film and pressing the composite film onto the panel, and the discharging system connected with the composite system; the feeding system conveys the plate into a production line, the front panel turnover device (108) detects the upper surface of the plate and turns the plate with the decorative surface facing downwards to the decorative surface facing upwards, and the composite system sequentially presses the composite film onto the decorative surface, the side surfaces of the two sides and the end surfaces of the two sides of the plate and then feeds the plate through the feeding system;

The compound system comprises three-face compound equipment (111), tracking and cutting equipment (112), a first steering conveying roller group (117), a four-corner positioning and cutting device (130) and five-face compound equipment (118) which are sequentially arranged along the direction of a production line;

the three-sided composite equipment (111) comprises a front conveying crawler belt (1111), a rear conveying crawler belt (1113), a pressing device (1112) arranged at the boundary of the front conveying crawler belt (1111) and the rear conveying crawler belt (1113), a film rolling air expansion shaft (1114) arranged above the pressing device (1112) and used for placing composite film coiled materials, a glue scraping device (1115) which is arranged close to the film rolling air expansion shaft (1114) and connected with a hot melt adhesive machine (129), and a primary film cutting mechanism (600) arranged at two sides of the feeding end of the rear conveying crawler belt (1113); the hot melt adhesive is coated on the back surface of the composite film by the adhesive scraping device (1115), the composite film is scraped by the adhesive scraping device (1115) and then conveyed to the pressing device (1112) through a conveying roller, the composite film is conveyed to the junction of the front conveying crawler belt (1111) and the rear conveying crawler belt (1113), the back surface of the composite film coated with the hot melt adhesive is attached to the surface of the plate, the plate continuously conveys forward to drive the composite film to enter the pressing device (1112), the pressing device (1112) presses the two sides of the plate with the composite film on the rear conveying crawler belt (1113), the two sides of the rear conveying crawler belt (1113) are provided with side rolling wheel sets (01) for rolling the composite film on the two sides of the plate respectively, and after the side rolling is finished, the composite film on the two sides of the plate material tail is cut by the primary film cutting mechanism (600), the composite film on the two sides of the plate material tail is cut into the plate;

The tracking cutting device (112) comprises a frame (210), a tail detection switch (250) arranged at the feeding end of the frame and a tracking cutting machine (220) arranged across the frame (210), wherein the tracking cutting machine (220) comprises a guide rail (221) which is arranged across the frame (210) at a preset included angle with the conveying direction of the sheet material and a blade (224) which is connected with the guide rail (221) and is arranged towards the conveying surface of the frame (210), the blade (224) is connected with a cutting cylinder (223), the tail detection switch (250) is in signal connection with the cutting cylinder (223), the tail detection switch (250) detects that the tail of the sheet material sends a cutting signal to the cutting cylinder (223), and the cutting cylinder (223) drives the blade (224) to move from a first end (221-1) of the guide rail to a second end (221-2) of the guide rail to cut a composite film of the tail of the sheet material;

the first steering conveying roller set (117) comprises a conveying frame (171), a plurality of conveying rollers (172) arranged on the conveying frame (171) in parallel, a steering photoelectric detection switch (173) and a steering conveying mechanism, wherein the steering conveying mechanism comprises a supporting base, a bracket and a plurality of conveying belts (175) arranged on the bracket, and each conveying belt (175) is positioned between two adjacent conveying rollers (172), is parallel to the conveying rollers (172) and is connected with a driving motor; the conveying direction of the conveying belt (175) is perpendicular to the conveying direction of the conveying roller (172), the steering photoelectric detection switch (173) detects that the plate material sends a stop signal to the conveying roller (172), the conveying roller (172) stops positioning, the driving motor drives the conveying belt (175) to drive, and the conveying belt (175) steers and conveys the plate material to the four-corner positioning cutting device (130);

The four-corner positioning cutting device (130) comprises a positioning conveyor (300), four-corner film cutting mechanisms (400) respectively arranged at four top corners of the positioning conveyor (300), a photoelectric detection switch (310) arranged on the positioning conveyor (300) and an electric control unit, wherein the electric control unit is respectively in signal connection with the positioning conveyor (300), the four-corner film cutting mechanisms (400) and the photoelectric detection switch (310); the photoelectric detection switch (310) detects that a plate enters the positioning conveyor (300) and sends a detection signal to the electric control unit, the electric control unit sends a stop instruction to the positioning conveyor (300) and simultaneously sends a cutting instruction to the four-corner film cutting mechanism (400), and after the positioning conveyor (300) stops positioning, the four-corner film cutting mechanism (400) cuts off redundant composite films on the side surface of the plate and the composite films folded and pressed to the bottom surface of the plate;

the five-sided composite equipment (118) comprises a hot air gun set arranged on two sides of a feeding end and end rolling wheel sets (800) arranged on two sides, the hot air gun set comprises two groups of hot air guns arranged on two sides of the front end of the five-sided composite equipment, the hot air guns spray hot air towards the end face of the plate to heat hot melt adhesive on the back of the composite film, and the end rolling wheel sets (800) are respectively arranged on two sides of the five-sided composite equipment (118) to roll the composite film at two ends of the plate onto the end face of the plate.

2. The sheet material compounding production line according to claim 1, wherein the side roller groups (01) on both sides of the rear conveying track (1113) of the three-sided compounding device (111) include a plurality of upper roller wheels (011), a plurality of upper hemming roller wheels (012), a plurality of side roller wheels (013), a plurality of lower hemming roller wheels (014) and a plurality of lower roller wheels (015) which are sequentially arranged along a sheet material conveying direction.

3. The sheet material composite production line according to claim 1, wherein the primary film cutting mechanism (600) comprises a cutting positioning roller (660), a second blade (670) arranged above the cutting positioning roller (660) and facing the cutting positioning roller (660), and a turnover cylinder (680) in driving connection with the second blade (670); the primary film cutting mechanism (600) is arranged according to the width of the plate, the plate enters the rear conveying crawler belt (1113), and the side surface of the plate is conveyed forwards against the cutting positioning roller (660);

a primary film cutting photoelectric detection switch (700) in signal connection with the primary film cutting mechanism (600) is respectively arranged at two sides of a feeding end of the rear conveying crawler belt (1113), the primary film cutting photoelectric detection switch (700) is in signal connection with a turnover cylinder (680) of the primary film cutting mechanism (600), the primary film cutting photoelectric detection switch (700) is used for detecting a plate signal and sending the plate signal to the turnover cylinder (680), the turnover cylinder (680) cannot receive the plate signal to rotate downwards, and the second blade (670) cuts a composite film connected with the tail of a plate material and the head of the next plate material, so that the composite film is cut into the same width as the plate; the turnover cylinder (680) receives the plate signal and rotates upwards, and the second blade (670) is lifted.

4. The sheet material compounding production line according to claim 1, wherein the tracking cutter (220) of the tracking cutter (112) includes a guide rail (221) provided across the frame (210) at a predetermined angle to a sheet material conveyance direction, a lifting mechanism (222), a cutter cylinder (223) connected to the lifting mechanism (222), a blade (224) connected to the cutter cylinder (223), and a drive cylinder (226) connected to the guide rail (221); the lifting mechanism (222) is arranged in the guide rail (221), the driving air cylinder (226) is arranged at one end of the guide rail (221), the driving air cylinder (226) is in signal connection with the tail detection switch (250), the tail detection switch (250) detects that the tail of the plate material sends a tail feeding signal to the driving air cylinder (226), and the driving air cylinder (226) drives the guide rail (221) to slide so as to drive the lifting mechanism (222) to move from the first end (221-1) of the guide rail to the second end (221-2) of the guide rail; the cutting cylinder (223) is in signal connection with the tail detection switch (250), the tail detection switch (250) detects that the tail of the plate material sends a tail feeding signal to the cutting cylinder (223), and the cutting cylinder (223) drives the lifting mechanism (222) to lift up and down so as to adjust the distance between the blade (224) and the plate material to adapt to the thickness of the plate material.

5. The board compounding production line according to claim 1, wherein the four-corner film cutting mechanism (400) of the four-corner positioning cutting device (130) comprises a bottom board (410), a first positioning block (420) arranged on the bottom board (410), a second positioning block (430) and a cutting blade (440), the first positioning block (420) comprises an end surface positioning surface (421), the second positioning block (430) comprises a side surface positioning surface (431) and a cutting positioning surface (435), the end surface positioning surface (421) of the first positioning block (420) is perpendicular to the side surface positioning surface (431) of the second positioning block (430) and is on the same plane as the cutting positioning surface (435) of the second positioning block (430), the cutting blade (440) is arranged against the cutting positioning surface (435) of the second positioning block (430), and the cutting blade (440) and a cutting motor (450) are connected to move forwards or backwards along the cutting positioning surface (435) under the driving of the cutting motor (450);

the photoelectric detection switch (310) detects that a plate enters the positioning conveyor (300) and sends detection signals to the electric control unit, the electric control unit sends stop instructions to the positioning conveyor (300) and simultaneously sends cutting instructions to the four-corner film cutting mechanism (400), after the positioning conveyor (300) stops being positioned, the end surface positioning surface (421) of the first positioning block (420) of the four-corner film cutting mechanism (400) abuts against the end surface of the plate, the side surface positioning surface (431) of the second positioning block (430) abuts against the side surface of the plate, the cutting motor (450) drives the cutting blade (440) to move forwards along the cutting positioning surface (435) of the second positioning block (430) to cut redundant composite films on the side surface of the plate and folded and pressed to the bottom surface of the plate, and the cutting blade (440) contacts the first positioning block to cut the rear surface of the plate.

6. The sheet material compounding production line according to any one of claims 1 to 5, wherein the front flap device (108) comprises a roller structure frame (1080), a first roller table (1081) and a second roller table (1082) which are installed in the roller structure frame (1080) and are conveyed in the same direction in the upper layer and the lower layer, two groups of pressing devices (1083) respectively arranged on the first roller table (1081) and the second roller table (1082) and flap cylinders (1084), when a sheet material enters the second roller table (1082) and is conveyed to a preset position, the first roller table (1081) and the second roller table (1082) stop conveying at the same time, meanwhile, the pressing devices (1083) extend to fix the sheet material, the flap cylinders (1084) drive the roller structure frame (1080) to integrally rotate, the roller structure frame (1080) rotates by 180 degrees, the positions of the first roller table (1081) and the second roller table (1082) are turned over, the weight of the sheet material falls on the first roller table (1081) after being turned over, and the sheet material is continuously conveyed to the front roller table (1083) and is retracted.

7. The board compounding production line of claim 6, further comprising a rear flap device (121) disposed between the compounding system and the blanking system, wherein the rear flap device (121) is connected to the five-sided compounding device (118) of the compounding system by a second set of turning conveyor rollers (119), and wherein the rear flap device (121) is connected to the blanking system.

8. The board compounding production line according to claim 7, wherein the second steering conveying roller group (119) comprises a second conveying frame (191), a plurality of transverse conveying rollers (192) arranged on the second conveying frame (191) in parallel, a second steering photoelectric detection switch (193) arranged on the second conveying frame (191), and a second steering conveying mechanism, wherein the second steering conveying mechanism comprises a supporting base, a bracket and a plurality of longitudinal conveying belts (195) arranged on the bracket, and each longitudinal conveying belt (195) is positioned between two adjacent transverse conveying rollers (192), is parallel to the transverse conveying rollers (192) and is connected with a second driving motor; the conveying direction of the longitudinal conveying belt (195) is perpendicular to the conveying direction of the transverse conveying rollers (192), a plate enters the second steering conveying roller set (119) to be conveyed on the longitudinal conveying belt (195), the second steering photoelectric detection switch (193) detects that the plate sends a stop signal to the longitudinal conveying belt (195), the longitudinal conveying belt (195) stops positioning, the second driving motor drives the transverse conveying rollers (192) to drive, and the transverse conveying rollers (192) steer and convey the plate to the rear turning plate equipment (121).

9. The board compounding production line of claim 6, wherein the front flap device (108) is provided with an induction sensor for identifying a board decoration surface, the induction sensor detects that the board decoration surface faces downwards and sends a flap signal to the flap cylinder (1084), the pressing device (1083) stretches out to fix the board, and the flap cylinder (1084) drives the roller structure frame (1080) to integrally rotate to turn the board upwards to the decoration surface.

10. The board compound production line according to claim 8, characterized in that a counting sensor is arranged on the rear board turning device (121), and the rear board turning device (121) turns over one board every interval.