Automatic paper laying and turning mechanism for double veneer panels

Abstract

The present invention discloses an automatic paper laying and turning mechanism for double veneer panels, which belongs to the technical field of paper turning machines, and includes a base, a fixed bracket and a movable bracket, a laying plate is provided at the middle lower part of the fixed bracket, veneer paper is laid on the laying plate, first linear moving modules are provided horizontally on both sides of the upper part of the fixed bracket, the output end of the first linear moving module is connected with a turning mechanism, a first adsorption rod is connected to the turning mechanism, a first adsorption rod is provided with a plurality of first negative pressure suction cups, a lifting module is provided at the bottom of the movable bracket, a lifting frame is provided at the bottom of the lifting module, a second linear moving module is provided horizontally on both sides of the lifting frame, a second adsorption rod is connected to the output end of the second linear moving module, and a plurality of second negative pressure suction cups are provided below the second adsorption rod. The beneficial effect of the present invention is that it can ensure that the paper can be stably adsorbed during the turning and moving process, and avoid the risk of paper falling off or shifting due to insufficient adsorption force.

Description

Technical Field

[0001] The invention belongs to the technical field of paper turning machines, and in particular relates to an automatic paper laying and turning mechanism for double decorative panels. Background Art

[0002] In the usual production of veneer boards, veneer paper is laid on the upper and lower surfaces of the plain board, and the veneer paper pattern direction on the lower surface is downward, which is opposite to the veneer paper pattern direction on the upper surface. In order to paste decorative paper on both sides of the slab, only one side of the slab can be pasted first, and the veneer paper on the upper surface can be laid automatically by a suction cup trolley, while the veneer paper on the lower surface can only be laid manually, and the veneer paper needs to be turned over manually before laying, so it is impossible to save labor costs.

[0003] A Chinese patent application with application number 2015204700830 discloses a double-sided paper laying mechanism for a slab, comprising a front-and-back moving device, a lifting device, a paper suction device, a paper storage rack, and a blowing device, wherein the front-and-back moving device is movably arranged on a frame in the front-and-back direction; the lifting device is movably arranged on the front-and-back moving device in the up-and-down direction; the flipping device is arranged on the lifting device and can rotate 180° around a vertical axis relative to the lifting device; the paper suction device comprises at least two suction cups and a vacuum air path system; the suction cup is arranged on the flipping device; when the front-and-back moving device moves, the suction cup is driven to move forward and backward above the paper storage rack and the production line; the blowing device has a blowing port located at the front or rear side of the suction cup and blowing air toward the suction cup; the blowing port is arranged on the flipping device; the suction cup is swingably arranged on the flipping device in the front-and-back direction; all the suction cups are collinear, and the straight line where the suction cups are located is perpendicular to the front-and-back direction of the front-and-back moving device.

[0004] A Chinese patent application with application number 2018105298496 discloses a paper turning mechanism of a pressure plate device, comprising a lifting paper rack that can move up and down for placing paper, two telescopic components that can be synchronously extended and retracted horizontally, an adsorption component and a paper pressing component that can rotate 360° for sucking paper; the telescopic component is arranged above the lifting paper rack and respectively arranged on the left and right sides of the lifting paper rack; the paper pressing component includes an air outlet pipe and a plurality of air nozzles evenly arranged at the bottom of the air outlet pipe, the paper pressing component is arranged at the upper rear of the adsorption component, and the air outlet of the air nozzle is inclined toward the adsorption component; the adsorption component and the paper pressing component are slidably connected at both ends to the telescopic component, and the adsorption component can move up and down relative to the paper pressing component.

[0005] The common feature of the above two solutions is that they use a set of vacuum suction cups to absorb the paper, and then use the flipping mechanism to rotate it, use the suction cup to complete the flipping of the paper, and then drive the suction cup to move, so as to bring the paper to the designated position for laying, and complete the automatic paper flipping and laying work. However, in the above scheme, the flipping and all movements of the paper are completed by adsorption by a set of vacuum suction cups. In this case, the vacuum suction cups are required to continuously provide negative pressure suction to avoid the risk of paper falling off or shifting due to insufficient adsorption force. However, due to the limited thickness of the paper and the fact that the paper has always been subjected to adsorption force on one side, it is easy to cause paper deformation or tearing due to excessive local force. Summary of the invention

[0006] To solve the above problems, the present invention provides an automatic paper laying and turning mechanism for double veneer panels, comprising a base, a fixed bracket and a movable bracket, the fixed bracket being fixed on the base, a laying board being provided at the middle and lower part of the fixed bracket, and veneer paper being laid on the laying board, first linear moving modules are provided in the horizontal direction on both sides above the fixed bracket, the output end of the first linear moving module is connected with a turning mechanism, the turning mechanism is connected with a first adsorption rod, the first adsorption rod is provided with a plurality of first negative pressure suction cups, and the turning mechanism drives the plurality of first negative pressure suction cups to turn, the movable bracket is provided above the fixed bracket, a lifting module is provided at the bottom of the movable bracket, a lifting frame is provided at the bottom of the lifting module, second linear moving modules are provided in the horizontal direction on both sides of the lifting frame, the output end of the second linear moving module is connected with a second adsorption rod, and a plurality of second negative pressure suction cups are provided below the second adsorption rod.

[0007] Preferably, the flipping mechanism includes a flipping motor, a rotating shaft and a connecting rod, the flipping motor is fixedly connected to a motor seat, the motor seat is connected to the first linear motion module, the output end of the flipping motor is connected to the rotating shaft, two connecting rods are connected to the rotating shaft, the other end of the connecting rod is connected to the first adsorption rod, the surface of the rotating shaft is smooth and the veneer paper is completely flipped when the rotating shaft returns through the first linear motion module.

[0008] Preferably, the first negative pressure suction cup comprises a first outer shell, a first inner shell and a first disk body, the first outer shell is provided with a cavity inside and the first outer shell is slidably mounted on the outside of the first inner shell, a first piston cavity is provided in the middle of the first inner shell, a first annular groove is also provided on the first inner shell, a first spring is connected to the first annular groove, the upper part of the first spring extends into the inner cavity of the first outer shell and is connected to the top of the inner cavity, a first piston rod is provided on the inner side of the first outer shell, a first piston is provided at the bottom of the first piston rod, the first piston extends to the first piston cavity in the first inner shell, the bottom of the first inner shell is connected to the first disk body, the first piston cavity is communicated with the inner side of the first disk body, and a pressure relief mechanism is connected to the first negative pressure suction cup.

[0009] Preferably, the pressure relief mechanism includes a first magnetic ring and a first return spring, a sliding cavity is provided inside the first piston rod, the first magnetic ring is slidably arranged inside the sliding cavity, the bottom of the first magnetic ring is connected to the first return spring, the first return spring is fixed to the bottom of the sliding cavity, a first pressure relief hole is provided on the side of the first piston rod, the first return spring supports the first magnetic ring to close the first pressure relief hole under normal conditions, a second pressure relief hole is provided on the bottom of the first piston rod, one side of the second pressure relief hole passes through the first outer shell and is connected to the outside, a third pressure relief hole is provided on the side of the first annular groove close to the first disk body, the third pressure relief hole connects the first disk body and the first annular groove, and a second magnetic ring is provided on the second negative pressure suction cup, and the second magnetic ring has the same magnetic pole as the first magnetic ring.

[0010] Preferably, a spherical groove is provided in the middle of the first disk body, and a spherical connecting part is provided at the end of the first inner shell body. The spherical connecting part is rotatably arranged in the spherical groove, and a connecting through hole is provided in the spherical connecting part, and the connecting through hole connects the first piston cavity and the inner side of the first disk body.

[0011] Preferably, first pull rods are provided at both sides of the first inner shell, second pull rods are provided at both sides of the first disk body, and a tension spring is provided between the first pull rod and the second pull rod.

[0012] Preferably, a cooling cavity is provided in the first outer shell, a first elastic membrane is provided on the side of the cooling cavity, a first delivery channel and a second delivery channel are provided on both sides of the inner side of the first piston rod, a cooling groove is provided in the middle of the first piston, a protruding second elastic membrane is provided on the surface of the cooling groove, and both sides of the first delivery channel and the second delivery channel are respectively connected to the cooling cavity and the cooling groove.

[0013] Preferably, the top side of the first conveying channel is hinged with a first flow limiting plate, the side wall of the cooling groove is located above the first flow limiting plate and is provided with a first stop block, the bottom side of the second conveying channel is hinged with a second flow limiting plate, and the side wall of the cooling cavity is located below the second flow limiting plate and is provided with a second stop block.

[0014] Preferably, the second negative pressure suction cup comprises a second outer shell, a second inner shell and a second disk body, the second outer shell is provided with a cavity inside and the second outer shell is slidably sleeved on the outer side of the second inner shell, a second piston cavity is provided in the middle of the second inner shell, a second annular groove is also provided on the second inner shell, a second spring is connected in the second annular groove, the upper part of the second spring extends into the inner cavity of the second outer shell and is connected to the top of the inner cavity, a second piston rod is provided on the inner side of the second outer shell, a second piston is provided at the bottom of the second piston rod, the second piston extends into the second piston cavity in the second shell, the bottom of the second inner shell is connected to the second disk body, the second piston cavity is communicated with the inner side of the second disk body, the second magnetic ring is provided on the second piston, an air cavity is provided inside the second adsorption rod, an air pipe is connected to one side of the air cavity, a control valve is provided on the air pipe, a through channel is connected to the other side of the air cavity, and the through channel passes through the second outer shell, the second piston rod and the second piston in sequence and is communicated with the second disk body.

[0015] Preferably, a lifting mechanism is provided at the bottom of the deck, and the lifting mechanism controls and adjusts the height of the deck.

[0016] The advantages of the present invention are:

[0017] 1. The present invention uses two sets of negative pressure suction cups to absorb the veneer paper at different stages, ensuring that the paper can be firmly absorbed during the entire flipping and moving process, reducing the risk of paper falling off or shifting due to insufficient adsorption force. At the same time, the two sets of negative pressure suction cups are evenly distributed on both sides of the paper at different stages, so that the paper is more evenly stressed during the flipping and moving process, avoiding deformation or tearing of the paper due to excessive local stress.

[0018] 2. After the present invention completes the flipping of the veneer paper, under the action of the first linear moving module, the rotating shaft translates back. During the returning process, the rotating shaft flattens the bent portion below the veneer paper, thereby achieving complete flipping of the veneer paper and ensuring the flatness of the veneer paper after flipping, thus providing a better foundation for subsequent processing or paving.

[0019] 3. The present invention introduces a spring and piston mechanism to enable the suction cup to form a stable negative pressure state during the adsorption process, thereby improving the stability and reliability of adsorption and avoiding damage to the veneer paper due to excessive negative pressure. Compared with traditional vacuum adsorption, the influence of human factors on the adsorption strength is reduced. Traditional vacuum adsorption may require manual adjustment of the adsorption strength during use, while the automated design of this solution greatly reduces this demand, thereby improving the safety and consistency of operation.

[0020] 4. The present invention realizes pressure relief through the magnetic repulsion between magnetic rings without physical contact or additional mechanical operation. When the second negative pressure suction cup approaches and activates the magnetic repulsion, the first magnetic ring can move quickly and automatically open the pressure relief hole, allowing external gas to quickly enter and balance the internal pressure without manual operation, thereby quickly releasing the negative pressure state and improving the pressure relief efficiency.

[0021] 5. The present invention realizes the unidirectional flow of the cooling medium during the compression and pressure relief process. During compression, the cooling medium enters the cooling cavity from the cooling groove through the second delivery channel. During pressure relief, the cooling medium flows back from the cooling cavity through the first delivery channel to the cooling groove, completing a complete cycle. This ensures that the cooling medium can circulate continuously and efficiently, thereby improving the cooling effect on the first magnetic ring and ensuring the stability of the pressure relief mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 For the present invention Figure 1 A is an enlarged view.

[0024] Figure 3 It is a structural diagram of the turning mechanism of the present invention.

[0025] Figure 4 This is a structural diagram of the first flip state of the present invention.

[0026] Figure 5 This is a structural diagram of the second flip state of the present invention.

[0027] Figure 6 This is a diagram of the normal state of the first negative pressure suction cup of the present invention.

[0028] Figure 7 This is a diagram of the adsorption state of the first negative pressure suction cup of the present invention.

[0029] Figure 8 This is a structural diagram of the first negative pressure suction cup and the second suction cup of the present invention.

[0030] Fig. 9 This is a diagram showing the internal structure of the first piston rod of the present invention.

[0031] Fig.10 This is a structural diagram of the first negative pressure suction cup in the pressure relief state of the present invention.

[0032] Fig.11 This is another structural diagram of another first negative pressure suction cup of the present invention.

[0033] Fig.12 This is another structural diagram of the first negative pressure suction cup in the first flipping state of the present invention.

[0034] Fig.13 This is another structural diagram of the first negative pressure suction cup in the second flipping state of the present invention.

[0035] Fig.14 This is a structural diagram of the second negative pressure suction cup of the present invention.

[0036] Fig.15 This is a structural diagram of the internal cooling mechanism of the first piston rod of the present invention.

[0037] Fig.16 This is a state diagram of the first flow limiting plate and the second flow limiting plate when the first piston chamber is under pressure in the present invention.

[0038] Fig.17 This is the state of the first flow limiting plate and the second flow limiting plate when the first piston chamber is in the pressure relief state of the present invention.

[0039] In the figure: 1 base, 2 fixed bracket, 3 mobile bracket, 4 floor board, 5 veneer paper, 6 first linear motion module, 7 first adsorption rod, 8 first negative pressure suction cup, 9 lifting module, 10 lifting frame, 11 second linear motion module, 12 second adsorption rod, 13 second negative pressure suction cup, 14 flip motor, 15 shaft, 16 connecting rod, 17 motor seat, 18 first outer shell, 19 first inner shell, 20 first disk body, 21 first piston cavity, 22 first annular groove, 23 first spring, 24 first piston rod, 25 first piston, 26 first magnetic ring, 27 first return spring, 28 sliding cavity, 29 first pressure relief hole, 30 second pressure relief hole, 3 1 the third pressure relief hole, 32 the second magnetic ring, 33 the spherical groove, 34 the spherical connecting part, 35 the connecting through hole, 36 the first pull rod, 37 the second pull rod, 38 the tension spring, 39 the cooling chamber, 40 the first elastic membrane, 41 the first conveying channel, 42 the second conveying channel, 43 the cooling groove, 44 the second elastic membrane, 45 the first flow limiting plate, 46 the first stop block, 47 the second flow limiting plate, 48 the second stop block, 49 the second outer shell, 50 the second inner shell, 51 the second disk body, 52 the second piston chamber, 53 the second annular embedded groove, 54 the second spring, 55 the second piston rod, 56 the second piston, 57 the air chamber, 58 the air pipe, 59 the control valve, 60 the through channel. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. At the same time, when an element is referred to as "fixed on" or "provided on" another element, it can be directly on the other element or there may be a central element at the same time. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be a central element at the same time. When an element is referred to as being "fixedly connected to" another element, it can be a common fixed connection method such as welding, bolting, or gluing. In short, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Embodiment 1, combination Figure 1-3 An automatic paper laying and turning mechanism for double veneer panels includes a base 1, a fixed bracket 2 and a movable bracket 3. A laying board 4 is provided at the lower middle of the fixed bracket 2, and veneer paper 5 is laid on the laying board 4. First linear moving modules 6 are provided in the horizontal direction on both sides above the fixed bracket 2. The output end of the first linear moving module 6 is connected to a turning mechanism, and the first linear moving module 6 can drive the turning mechanism to translate in the horizontal direction. In this solution, the first linear moving module 6 adopts a structure in which an electric screw rod cooperates with a track, and the electric screw rod drives the turning mechanism to move horizontally along the track. A lifting mechanism is provided at the bottom of the laying board 4. In this solution, the lifting mechanism is a forklift, and the lifting mechanism controls and adjusts the height of the laying board 4.

[0044] The flip mechanism is connected to a first adsorption rod 7, and a plurality of first negative pressure suction cups 8 are arranged on the first adsorption rod 7. The flip mechanism drives the plurality of first negative pressure suction cups 8 to flip, thereby flipping the veneer paper 5 on the floor board 4. The mobile bracket 3 is located above the fixed bracket 2. The mobile bracket 3 can be suspended above the fixed bracket 2 by connecting to the top of the plant. A lifting module 9 is arranged at the bottom of the mobile bracket 3. A lifting frame 10 is arranged at the bottom of the lifting module 9. The mobile bracket 3 can move the lifting frame 10 up and down through the lifting module 9. The lifting module 9 can be realized by using a common structure such as a motor with a rack or directly using a lifting motor.

[0045] Second linear moving modules 11 are arranged horizontally on both sides of the lifting frame 10, and the output end of the second linear moving module 11 is connected to the second adsorption rod 12, and a plurality of second negative pressure suction cups 13 are arranged below the second adsorption rod 12. The second linear moving module 11 adopts a mechanism of an electric cylinder and an L-shaped support plate, and the second linear moving module 11 can drive the second adsorption rod 12 to move horizontally, and the second negative pressure suction cup 13 is used to adsorb the flipped veneer paper 5 and move it to a new station.

[0046] In this solution, when the veneer paper 5 is turned over, Figure 4 As shown, the first negative pressure suction cup 8 is first turned counterclockwise by the turning mechanism, so that the first negative pressure suction cup 8 absorbs the veneer paper 5 on the deck 4, and then the turning mechanism drives the first negative pressure suction cup 8 to turn 180° clockwise, turning one end of the veneer paper 5 over. At this time, the first negative pressure suction cup 8 is facing upward. Then Figure 5 As shown, the first linear moving module 6 drives the flipping mechanism and the first negative pressure suction cup 8 to move to the bottom of the second negative pressure suction cup 13. The lifting module 9 on the mobile bracket 3 drives the lifting frame 10 to descend, so that the second negative pressure suction cup 13 on the second adsorption rod 12 is adsorbed with the other side of the veneer paper 5. At this time, the first negative pressure suction cup 8 located below the veneer paper 5 is released from adsorption, and the veneer paper 5 is driven to rise by the second negative pressure suction cup 13 and moves horizontally under the action of the second linear moving module 11, so that the veneer paper 5 is flipped and moved to the next station. The two groups of negative pressure suction cups adsorb the veneer paper 5 at different stages, ensuring that the paper can be firmly adsorbed during the entire flipping and moving process, reducing the risk of paper falling off or shifting due to insufficient adsorption force. At the same time, the two groups of negative pressure suction cups are evenly distributed on both sides of the paper at different stages, so that the paper is more evenly stressed during the flipping and moving process, avoiding the deformation or tearing of the paper due to excessive local stress.

[0047] In this embodiment, the flipping mechanism includes a flipping motor 14, a rotating shaft 15 and a connecting rod 16. The flipping motor 14 is fixedly connected to a motor seat 17, which is connected to the first linear motion module 6. The output end of the flipping motor 14 is connected to the rotating shaft 15, and two connecting rods 16 are connected to the rotating shaft 15. The other end of the connecting rod 16 is connected to the first adsorption rod 7. The flipping motor 14 in the flipping mechanism drives the rotating shaft 15 and the connecting rod 16 to flip, thereby realizing the flipping of the first negative pressure suction cup 8. The surface of the rotating shaft 15 is a smooth structure. After the flipping of the veneer paper 5 is completed, under the action of the first linear motion module 6, the rotating shaft 15 is translated and returned. In the process of returning, the rotating shaft 15 flattens the bent part below the veneer paper 5, realizing the complete flipping of the veneer paper 5, which helps to ensure the flatness of the veneer paper 5 after flipping, and provides a better foundation for subsequent processing or paving. The smooth surface can significantly reduce the friction coefficient between the rotating shaft 15 and the veneer paper 5, and can avoid scratches on the veneer paper 5. In this embodiment, the first negative pressure suction cup 8 and the second negative pressure suction cup 13 are both vacuum negative pressure suction cups, which are connected with corresponding negative pressure equipment to form a vacuum adsorption effect and perform corresponding control.

[0048] Embodiment 2, as Figure 6-7 As shown, the present embodiment is improved for the negative pressure suction cup. In the present embodiment, the first negative pressure suction cup 8 includes a first outer shell 18, a first inner shell 19 and a first disk body 20. A cavity is provided inside the first outer shell 18 and the first outer shell 18 is slidably sleeved on the outer side of the first inner shell 19. A first piston cavity 21 is provided in the middle of the first inner shell 19. A first annular embedding groove 22 is also provided on the first inner shell 19. A first spring 23 is connected in the first annular embedding groove 22. The upper part of the first spring 23 extends into the inner cavity of the first outer shell 18 and is connected to the top of the inner cavity. A first piston rod 24 is provided on the inner side of the first outer shell 18. A first piston 25 is provided at the bottom of the first piston rod 24. The first piston 25 extends into the first piston cavity 21 in the first inner shell 19. The bottom of the first inner shell 19 is connected to the first disk body 20. The first piston cavity 21 is communicated with the inner side of the first disk body 20. A pressure relief mechanism is connected to the first negative pressure suction cup 8. When the first negative pressure suction cup 8 is sucking the veneer paper 5, first, the flip mechanism rotates counterclockwise, and the first outer shell 18 is moved downward by the first suction rod 7 until the first plate body 20 is in close contact with the veneer paper 5, and the first outer shell 18 drives the first piston rod 24 and the first piston 25 to move downward along the first piston cavity 21 in the first inner shell 19 until the piston exhausts the air in the first piston cavity 21 and the first plate body 20, and the interior of the first plate body 20 is in a negative pressure state, such as Figure 7As shown, the first spring 23 is in a compressed state at this time. When the flipping mechanism rotates clockwise to prepare to flip the veneer paper 5, the first spring 23 will drive the first outer shell 18, the first piston rod 24 and the first piston 25 to reset. The reset of the first piston 25 will form a stable negative pressure in the first piston chamber 21, thereby improving the adsorption effect.

[0049] This solution introduces a spring and piston mechanism so that the first negative pressure suction cup 8 can form a stable negative pressure state during the adsorption process, thereby improving the stability and reliability of adsorption and avoiding damage to the veneer paper 5 due to excessive negative pressure. Compared with traditional vacuum adsorption, the influence of human factors on the adsorption strength is reduced. Traditional vacuum adsorption may require manual adjustment of the adsorption strength during use, but the automated design of this solution greatly reduces this demand, thereby improving the safety and consistency of operation.

[0050] After the first negative pressure suction cup 8 sucks the veneer paper 5 and turns over, the second negative pressure suction cup 13 sucks the veneer paper 5 from the other side. The second negative pressure suction cup 13 has a similar structure to the first negative pressure suction cup 8. Figure 8 As shown, specifically, the second negative pressure suction cup 13 includes a second outer shell 49, a second inner shell 50 and a second disk body 51, a cavity is provided inside the second outer shell 49 and the second outer shell 49 is slidably sleeved on the outer side of the second inner shell 50, a second piston cavity 52 is provided in the middle of the second inner shell 50, a second annular groove 53 is also provided on the second inner shell 50, a second spring 54 is connected in the second annular groove 53, the upper part of the second spring 54 extends into the inner cavity of the second outer shell 49 and is connected to the top of the inner cavity, a second piston rod 55 is provided on the inner side of the second outer shell 49, a second piston 56 is provided at the bottom of the second piston rod 55, the second piston 56 extends into the second piston cavity 52 in the second shell, the bottom of the second inner shell 50 is connected to the second disk body 51, and the second piston cavity 52 is communicated with the inner side of the second disk body 51. Its adsorption principle is also the same as that of the first negative pressure suction cup 8. After the second negative pressure suction cup 13 completes the adsorption, the first negative pressure suction cup 8 needs to release the pressure through the pressure relief mechanism to release the adsorption effect on the lower part of the veneer paper 5 .

[0051] The pressure relief mechanism can adopt conventional technology, such as communicating with the first piston chamber 21 or the inner side of the first disk body 20 through corresponding pipelines to supply air to complete the pressure relief. Figure 8-9As shown, in this embodiment, the pressure relief mechanism includes a first magnetic ring 26 and a first return spring 27, a sliding cavity 28 is provided inside the first piston rod 24, the first magnetic ring 26 is slidably arranged inside the sliding cavity 28, the bottom of the first magnetic ring 26 is connected to the first return spring 27, the first return spring 27 is fixed to the bottom of the sliding cavity 28, a first pressure relief hole 29 is provided on the side of the first piston rod 24, the first return spring 27 supports the first magnetic ring 26 to close the first pressure relief hole 29 under normal conditions, a second pressure relief hole 30 is provided on the bottom of the first piston rod 24, one side of the second pressure relief hole 30 passes through the first outer shell 18 and is connected to the outside, a third pressure relief hole 31 is provided on the side of the first annular groove 22 close to the first disk body, the third pressure relief hole 31 is connected to the first disk body 20 and the first annular groove 22, a second magnetic ring 32 is provided on the second negative pressure suction cup 13, and the second magnetic ring 32 is preferably provided on the second piston 56.

[0052] The second magnetic ring 32 has the same magnetic pole as the first magnetic ring 26. When the first negative pressure suction cup 8 adsorbs the veneer paper 5, the first magnetic ring 26, under the support of the first return spring 27, closes the first pressure relief hole 29 with its side. Therefore, the inner side of the entire first outer shell 18 and the first piston chamber 21 in the first inner shell 19 are still in a closed state. After the first piston 25 exhausts the air in the first piston chamber 21 and the inner side of the first disk body 20, the inner side of the first disk body 20 can maintain a negative pressure state. When the second negative pressure suction cup 13 descends, the second magnetic ring 32 gradually approaches the first magnetic ring 26, and the two have the same magnetic poles and repel each other. The first magnetic ring 26 begins to move downward until the first pressure relief hole 29 is in an open state. Fig.10 As shown by the arrows in , at this time, the external gas passes through the second pressure relief hole 30 and the first pressure relief hole 29 and the first annular groove 22 into the first piston chamber 21 near the first disc body 20, and finally releases the negative pressure state of the first disc body 20.

[0053] The pressure relief mechanism of this scheme realizes pressure relief through the magnetic repulsion between the magnetic rings, without physical contact or additional mechanical operation. When the second negative pressure suction cup 13 approaches and activates the magnetic repulsion, the first magnetic ring 26 can move quickly and automatically open the pressure relief hole, so that the external gas can quickly enter and balance the internal pressure without manual operation, thereby quickly releasing the negative pressure state. In this scheme, the second magnetic ring 32 is preferably arranged on the second piston 56, which has the advantage that only when the second piston 56 descends and the second negative pressure suction cup 13 completes the adsorption of the veneer paper 5, the first negative pressure suction cup 8 will release the adsorption of the veneer paper 5. It ensures that the first negative pressure suction cup 8 and the second negative pressure suction cup 13 are highly synchronized and coordinated in operation, avoiding potential damage to the veneer paper 5 caused by premature or late pressure relief. Only when the second negative pressure suction cup 13 is stably adsorbed, the first negative pressure suction cup 8 is released, ensuring the stability and safety of the veneer paper 5 during the transfer process.

[0054] Combination Fig.14 In this solution, an air cavity 57 is provided inside the second suction rod 12, one side of the air cavity 57 is connected to an air pipe 58, a control valve 59 is provided on the air pipe 58, and the other side of the air cavity 57 is connected to a through channel 60, which passes through the second outer shell 49, the second piston rod 55 and the second piston 56 in sequence and communicates with the second plate body 51. After the second negative pressure suction cup 13 brings the veneer paper 5 to the specified position, the air can be injected into the air cavity 57 and the through channel 60 through the air pipe 58 to relieve the pressure on the second piston cavity 52 and the inner side of the second plate body 51, thereby releasing the adsorption force of the second negative pressure suction cup 13.

[0055] Embodiment 3: When the first negative pressure suction cup 8 in the above solution is adsorbing, the flipping mechanism cannot make the first negative pressure suction cup 8 completely vertically facing the veneer paper 5, so there may be uneven distribution of adsorption force, resulting in a problem of reduced adsorption force. Fig.11 As shown, in this embodiment, a spherical groove 33 is provided in the middle of the first plate body 20, and a spherical connecting portion 34 is provided at the end of the first inner shell 19. The spherical connecting portion 34 is rotatably arranged in the spherical groove 33, and a connecting through hole 35 is provided in the spherical connecting portion 34. The connecting through hole 35 connects the first piston cavity 21 and the inner side of the first plate body 20. Through the above arrangement, the automatic angle adjustment of the first plate body 20 can be realized. When the veneer paper 5 is adsorbed, as shown in FIG. Fig.12 As shown, the first plate body 20 gradually approaches the veneer paper 5, and the portion that first contacts the veneer paper 5 is tilted at its original angle under the reaction force of the veneer paper 5, so that the first plate body 20 can always be set facing the veneer paper 5 during the adsorption process, avoiding the problem of reduced adsorption force.

[0056] Combination Fig.11 , first pull rods 36 are provided on both sides of the first inner shell 19, second pull rods 37 are provided on both sides of the first plate body 20, and a tension spring 38 is provided between the first pull rod 36 and the second pull rod 37. When the first negative pressure suction cup 8 completes the adsorption, as shown in FIG. Fig.13 As shown, after the veneer paper 5 is turned over, the angle of the first plate body 20 can be readjusted through the action of the tension spring 38, so as to avoid the problem that the part of the veneer paper 5 cannot be in a horizontal state after being turned over, and the adsorption force of the second negative pressure suction cup 13 is reduced when the second negative pressure suction cup 13 descends.

[0057] Embodiment 4, as Fig.15As shown, in this embodiment, a cooling cavity 39 is provided in the first outer shell 18, a first elastic membrane 40 is provided on the side of the cooling cavity 39, a first delivery channel 41 and a second delivery channel 42 are provided on both sides of the inner side of the first piston rod 24, a cooling groove 43 is provided in the middle of the first piston, a protruding second elastic membrane 44 is provided on the surface of the cooling groove 43, and both sides of the first delivery channel 41 and the second delivery channel 42 are connected to the cooling cavity 39 and the cooling groove 43 respectively. The first delivery channel 41 and the second delivery channel 42 are arranged to bypass the first pressure relief holes 29 on both sides of the first piston rod 24, and the middle of the cooling cavity 39 is also reserved for the third pressure relief hole 31 to pass through. Since the first piston rod 24 and the first piston 25 will generate more heat during the working process, and the first magnetic ring 26 is inside the first piston rod 24, the temperature inside it will become higher and higher after a long time, so that the molecular thermal motion inside the magnet will be enhanced, resulting in disturbance of the magnetic domain and destruction of the microstructure. These changes will directly affect the magnetization intensity of the magnet and thus reduce the magnetic field intensity of the entire magnet. The magnetic force on the second magnetic ring 32 will be reduced, which can easily cause the pressure relief mechanism to malfunction. By setting the first delivery channel 41 and the second delivery channel 42 on the inner side of the first piston rod 24, and setting the cooling groove 43 in the middle of the piston, and connecting with the cooling cavity 39 in the first outer shell 18, an efficient heat conduction path is formed. This design allows cooling media such as water, oil or other coolants to flow quickly through these channels and grooves, effectively absorbing and taking away the heat generated by the first piston rod 24 and surrounding components during operation.

[0058] Combination Figure 15-16 , the top side of the first conveying channel is hinged with a first flow-limiting plate 45, the side wall of the cooling groove 43 is located above the first flow-limiting plate 45 and is provided with a first stopper 46, the bottom side of the second conveying channel is hinged with a second flow-limiting plate 47, and the side wall of the cooling cavity 39 is located below the second flow-limiting plate 47 and is provided with a second stopper 48. When the first piston rod 24 compresses the first piston cavity 21, its air pressure will cause the second elastic membrane 44 to contract into the cooling groove 43, and the pressure in the cooling groove 43 will increase. The cooling medium will enter the cooling cavity 39 from the two conveying channels under the action of pressure. Since the top of the first conveying channel 41 is provided with a first flow-limiting plate 45, and the first stopper 46 limits the first flow-limiting plate 45 to be able to rotate within a small range close to the top of the first conveying channel 41, the first flow-limiting plate 45 will close the top of the first conveying channel 41 under the action of the flow of the cooling medium, so the cooling medium will enter the cooling cavity 39 from the second conveying channel 42. When the pressure is released, the second elastic membrane 44 will be reset, and negative pressure will be formed in the cooling groove 43. At this time, the cooling medium will flow back from the cooling cavity 39 to the cooling groove 43 through the two conveying channels. Fig.17As shown, the second stopper 48 limits the second flow limiting plate 47 to rotate only within a small range near the bottom of the second delivery channel 42. The second flow limiting plate 47 will close the bottom of the second delivery channel 42 under the action of the flow of the cooling medium, so that the cooling medium will flow back from the first delivery channel 41 to the cooling groove 43. The first and second flow limiting plates 47 and the corresponding stopper blocks realize the one-way flow of the cooling medium during the compression and pressure relief process. During compression, the cooling medium enters the cooling chamber 39 from the cooling groove 43 through the second delivery channel 42, effectively absorbing heat; during pressure relief, the cooling medium flows back from the cooling chamber 39 through the first delivery channel 41 to the cooling groove 43, completing a complete cycle. This design ensures that the cooling medium can circulate continuously and efficiently, thereby improving the cooling effect on the first magnetic ring 26.

[0059] 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. An automatic paper laying and turning mechanism for double veneer panels, characterized in that: The invention comprises a base (1), a fixed support (2) and a movable support (3), wherein the fixed support (2) is fixed on the base (1), a floor board (4) is provided at the middle lower part of the fixed support (2), and a veneer paper (5) is provided on the floor board (4), first linear movable modules (6) are provided in the horizontal direction on both sides above the fixed support (2), an output end of the first linear movable module (6) is connected to a flipping mechanism, a first adsorption rod (7) is connected to the flipping mechanism, a plurality of first negative pressure suction cups (8) are provided on the first adsorption rod (7), and the flipping mechanism drives the plurality of first negative pressure suction cups (8) to flip, the movable support (3) is provided above the fixed support (2), and the first linear movable module (6) is connected to the output end of the first linear movable module (6), a first adsorption rod (7) is provided with a plurality of first negative pressure suction cups (8), and the flipping mechanism drives the plurality of first negative pressure suction cups (8) to flip, the movable support (3) is provided above the fixed support (2), and the first linear movable module (6) is connected to the output end of the first linear movable module (6), and a first negative pressure suction cup (8) is provided on the first adsorption rod (7). A lifting module (9) is provided at the bottom of the movable bracket (3), a lifting frame (10) is provided at the bottom of the lifting module (9), second linear movable modules (11) are provided in the horizontal direction on both sides of the lifting frame (10), an output end of the second linear movable module (11) is connected to a second adsorption rod (12), a plurality of second negative pressure suction cups (13) are provided below the second adsorption rod (12), the flipping mechanism comprises a flipping motor (14), a rotating shaft (15) and a connecting rod (16), the flipping motor (14) is fixedly connected to a motor seat (17), the motor seat (17) is connected to the first linear movable module (6), the output end of the flipping motor (14) is connected to the rotating shaft (15), and the connecting rod (16) is connected to the first linear movable module (6). ), the rotating shaft (15) is connected with two connecting rods (16), the other end of the connecting rod (16) is connected with the first adsorption rod (7), the surface of the rotating shaft (15) is smooth and the veneer paper (5) is completely turned over when the rotating shaft (15) returns through the first linear motion module (6), the first negative pressure suction cup (8) includes a first outer shell (18), a first inner shell (19) and a first disc body (20), the first outer shell (18) has a cavity inside and the first outer shell (18) is slidably sleeved on the outside of the first inner shell (19), the middle of the first inner shell (19) is provided with a first piston cavity (21), and the first inner shell (19) is also provided with a first annular The first annular embedded groove (22) is connected to a first spring (23), the upper part of the first spring (23) extends into the inner cavity of the first outer shell (18) and is connected to the top of the inner cavity, the inner side of the first outer shell (18) is provided with a first piston rod (24), the bottom of the first piston rod (24) is provided with a first piston (25), the first piston (25) extends into a first piston cavity (21) in the first inner shell (19), the bottom of the first inner shell (19) is connected to the first disk body (20), the first piston cavity (21) is in communication with the inner side of the first disk body (20), and the first negative pressure suction cup (8) is connected to a pressure relief mechanism.The pressure relief mechanism comprises a first magnetic ring (26) and a first return spring (27); a sliding cavity (28) is provided inside the first piston rod (24); the first magnetic ring (26) is slidably arranged inside the sliding cavity (28); the bottom of the first magnetic ring (26) is connected to the first return spring (27); the first return spring (27) is fixed to the bottom of the sliding cavity (28); a first pressure relief hole (29) is provided on the side of the first piston rod (24); the first return spring (27) supports the first magnetic ring (26) to close the first pressure relief hole (29) in a normal state; and a second pressure relief hole (30) is provided at the bottom of the first piston rod (24). One side of the second pressure relief hole (30) passes through the first outer shell (18) and is in communication with the outside. A third pressure relief hole (31) is provided on the side of the first annular embedded groove (22) close to the first disk body (20). The third pressure relief hole (31) is in communication with the first disk body (20) and the first annular embedded groove (22). A second magnetic ring (32) is provided on the second negative pressure suction cup (13). The second magnetic ring (32) has the same magnetic pole as the first magnetic ring (26). The second negative pressure suction cup (13) includes a second outer shell (49), a second inner shell (50) and a second disk body (51). A cavity is provided inside the second outer shell (49). 9) is slidably sleeved on the outer side of the second inner shell (50), a second piston chamber (52) is provided in the middle of the second inner shell (50), a second annular groove (53) is also provided on the second inner shell (50), a second spring (54) is connected in the second annular groove (53), the upper part of the second spring (54) extends into the inner chamber of the second outer shell (49) and is connected to the top of the inner chamber, a second piston rod (55) is provided on the inner side of the second outer shell (49), a second piston (56) is provided at the bottom of the second piston rod (55), and the second piston (56) extends into the second piston chamber (52) in the second shell The bottom of the second inner shell (50) is connected to the second disk body (51), the second piston chamber (52) is in communication with the inner side of the second disk body (51), the second magnetic ring (32) is arranged on the second piston (56), an air chamber (57) is arranged inside the second adsorption rod (12), one side of the air chamber (57) is connected to an air pipe (58), a control valve (59) is arranged on the air pipe (58), the other side of the air chamber (57) is connected to a through passage (60), the through passage (60) passes through the second outer shell (49), the second piston rod (55) and the second piston (56) in sequence and is in communication with the second disk body (51).

2. The automatic paper laying and turning mechanism for double veneer panels according to claim 1, characterized in that: A spherical groove (33) is provided in the middle of the first disc body (20), and a spherical connecting portion (34) is provided at the end of the first inner shell (19). The spherical connecting portion (34) is rotatably arranged in the spherical groove (33), and a connecting through hole (35) is provided in the spherical connecting portion (34). The connecting through hole (35) communicates with the first piston chamber (21) and the inner side of the first disc body (20).

3. The automatic paper laying and turning mechanism for double veneer panels according to claim 2, characterized in that: First pull rods (36) are provided on both sides of the first inner shell (19), second pull rods (37) are provided on both sides of the first disk body (20), and a tension spring (38) is provided between the first pull rod (36) and the second pull rod (37).

4. The automatic paper laying and turning mechanism for double veneer panels according to claim 3, characterized in that: A cooling cavity (39) is provided in the first outer shell (18), a first elastic membrane (40) is provided on the side of the cooling cavity (39), a first delivery channel (41) and a second delivery channel (42) are provided on both sides of the inner side of the first piston rod (24), a cooling groove (43) is provided in the middle of the first piston (25), a protruding second elastic membrane (44) is provided on the surface of the cooling groove (43), and both sides of the first delivery channel (41) and the second delivery channel (42) are connected to the cooling cavity (39) and the cooling groove (43) respectively.

5. The automatic paper laying and turning mechanism for double veneer panels according to claim 4, characterized in that: A first flow limiting plate (45) is hingedly connected to the top side of the first conveying channel (41), a first stop block (46) is provided on the side wall of the cooling groove (43) above the first flow limiting plate (45), a second flow limiting plate (47) is hingedly connected to the bottom side of the second conveying channel, and a second stop block (48) is provided on the side wall of the cooling cavity (39) below the second flow limiting plate (47).

6. The automatic paper laying and turning mechanism for double veneer panels according to claim 5 is characterized in that: A lifting mechanism is provided at the bottom of the floor board (4), and the lifting mechanism controls and adjusts the height of the floor board (4).

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