Automatically-pushed paper angle bead machine paper feeding device and paper feeding method

Abstract

The invention discloses an automatically-pushed paper angle bead machine paper feeding device and a paper feeding method, and relates to the technical field of paper angle bead, the automatically-pushed paper angle bead machine paper feeding device comprises a rack and a conveying belt, mounting vertical plates are welded to the two side walls of the rack, a paper angle bead discharging box is connected between the adjacent mounting vertical plates, and an L-shaped top plate is mounted at the top end of the outer wall of the left side of the paper angle bead discharging box; an electric push rod is arranged on the L-shaped top plate, a lower pressing plate is connected to the telescopic end of the electric push rod, side limiting plates are arranged at the front end and the rear end of an inner cavity of the paper angle bead discharging box correspondingly, cylinders are installed at the bottom ends of the outer walls of the left side and the right side of the paper angle bead discharging box correspondingly, specially-shaped blocks which are elastically arranged are arranged in the two cylinders correspondingly, and two fixing plates are connected to the bottom of the paper angle bead discharging box; and an overturning part and a V-shaped overturning paper feeding plate are arranged between the adjacent fixing plates. A discharging opening is formed in the bottom wall of the paper corner protector discharging box. According to the paper angle bead feeding device, paper angle beads stacked in the paper angle bead discharging box can be circularly and automatically pushed to be fed, the paper angle beads are pushed to the next station, manual adjustment is not needed, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of paper corner protectors, and in particular to a paper corner protector machine paper feeding device and a paper feeding method with automatic pushing. Background Technique

[0002] The paper corner protector, also known as the edge board, is a popular packaging product internationally and is used to replace heavy wooden packaging. It is made by pressing multiple layers of kraft paper or cardboard tubes through a corner protector machine. The two end faces are smooth and flat without obvious burrs, and are mainly in the shapes of L and U. The paper corner protector has the characteristics of low price, light weight, firmness, and meeting environmental protection requirements. It can be used to strengthen the edge support force of the package after stacking the goods and avoid unnecessary damage during transportation.

[0003] After the paper corner protectors are produced, it is necessary to adjust their positions and then transfer them to the next working station. In order to save space, the existing paper corner protectors are usually stacked together after production. When adjusting their positions to transfer them to the next working station, it is necessary for workers to manually pick up one paper corner protector at a time to adjust the angle. Manual operation is troublesome, and the paper corner protectors cannot be continuously pushed, resulting in low work efficiency. For this reason, we propose a paper corner protector machine paper feeding device and a paper feeding method with automatic pushing. Summary of the Invention

[0004] The purpose of the present invention is to provide a paper corner protector machine paper feeding device and a paper feeding method with automatic pushing to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A paper corner protector machine paper feeding device with automatic pushing includes a frame. A conveyor belt is installed on the frame. Support frames are installed at both ends of the outer walls on both sides of the frame. Installation vertical plates are welded in the middle of the front and rear side walls of the frame. A paper corner protector blanking box is connected between adjacent installation vertical plates;

[0007] The top of the paper corner protector blanking box is provided with a feeding port. An L-shaped top plate is installed at the top of the left outer wall of the paper corner protector blanking box. An electric push rod is provided on the L-shaped top plate. The telescopic end of the electric push rod is connected to a lower pressing plate through a piston rod. Side limit plates that are movably arranged are provided at the front and rear ends of the inner cavity of the paper corner protector blanking box. Cylinders are installed at the bottom ends of the left and right outer walls of the paper corner protector blanking box, and the cylinders are communicated with the inner cavity of the paper corner protector blanking box. Telescopic connecting rods are connected in both groups of cylinders. The other ends of the telescopic connecting rods are installed with special-shaped blocks. Compression springs are sleeved on the outer walls of the telescopic connecting rods. A blanking port is opened at the bottom of the paper corner protector blanking box;

[0008] Two groups of fixed plates are connected to the bottom of the paper corner protector blanking box. A V-shaped flipping paper feeding plate is provided between adjacent fixed plates. A flipping component for driving the V-shaped flipping paper feeding plate to rotate is provided on the outer wall of the front fixed plate.

[0009] Preferably, the flipping member includes a support plate which is fixedly connected to the outer wall of the front end fixing plate. A reduction motor is provided on the support plate. The output end of the reduction motor is connected to a drive shaft. A driving gear is installed on the drive shaft. The side wall of the driving gear is meshed with a driven gear. A rotating rod is installed in the middle of the side of the driven gear close to the V-shaped flipping paper feeding plate. The rotating rod penetrates through the front end fixing plate, and the other end of the rotating rod is rotatably connected to the inner side surface of the rear end fixing plate through a bearing. The outer wall of the rotating rod is connected to the V-shaped flipping paper feeding plate. An electric telescopic rod is provided on the outer wall of the V-shaped flipping paper feeding plate. The telescopic end of the electric telescopic rod is connected to a pushing paper plate through a piston rod.

[0010] Preferably, fixed boxes are installed on the front and rear outer walls of the paper corner protector blanking box. Stepping motors are connected to the outer walls of the two fixed boxes. The output end of the stepping motor is connected to a rotating rod. The other end of the rotating rod is rotatably connected to the inner wall of the fixed box through a bearing. A rotating gear is sleeved on the rotating rod. Through holes are provided in a penetrating manner on both side walls of the fixed box and the side wall of the paper corner protector blanking box. A moving tooth plate is slidably connected in the through hole. A plurality of meshing grooves are provided on the moving tooth plate, and each group of meshing grooves is meshed with the rotating gear. One end of the moving tooth plate close to the lower pressing plate is connected to the outer wall of the side limiting plate.

[0011] Preferably, mounting strips are connected to the bottom ends of the two outer walls of the paper corner protector blanking box. The mounting strips penetrate through the side wall of the mounting vertical plate. A positioning groove is provided on the outer top wall of the mounting strip. A U-shaped seat is connected to the front end face of the mounting vertical plate, and the opening end of the U-shaped seat faces the top of the mounting strip.

[0012] Preferably, an operating pull rod is vertically slidably connected in the U-shaped seat. A positioning block adapted to the positioning groove is installed at the bottom of the operating pull rod. An auxiliary sliding plate is connected to the outer wall of the operating pull rod, and the auxiliary sliding plate is slidably connected to the inner wall of the U-shaped seat. A connecting spring is sleeved on the outer wall of the operating pull rod. The connecting spring is located between the upper surface of the auxiliary sliding plate and the inner wall of the U-shaped seat.

[0013] Preferably, a pull ring is connected to the end of the operating pull rod far from the positioning block. An anti-slip rubber sleeve is sleeved on the hand-held end of the pull ring. An anti-slip pad is sleeved on the outer wall of the positioning block. Corrugated protrusions are embedded in the inner wall of the positioning groove.

[0014] S1: First, pull up the operating levers inside the two U-shaped seats to move the auxiliary slide plate upward. At this time, the connecting spring is in a compressed state, and the positioning block is stored in the inner cavity of the U-shaped seat. Then, move the paper corner protector blanking box back and forth between the adjacent mounting vertical plates, so that the two mounting strips on the outer wall of the paper corner protector blanking box both pass through the through holes on the mounting vertical plates, the front ends of the two mounting strips penetrate through the mounting vertical plates, and the positioning grooves opened on the two mounting strips are both communicated with the inner cavities of the two U-shaped seats. When the positioning block is aligned with the positioning groove, release the operating lever, and the compressed connecting spring automatically returns to its original position, causing the auxiliary slide plate and the positioning block to both move downward until the positioning block is connected in the positioning groove, and the paper corner protector blanking box is installed between the adjacent mounting vertical plates;

[0015] S2: Then, electrically connect the electrical ends of each electrical device to the electrical ends of the external power supply and the controller through wires. The controller starts the electric push rod to drive the lower pressing plate to move upward through the piston rod, and add the stacked paper corner protectors into the paper corner protector blanking box from the feeding port. Then the controller starts the two stepping motors to work synchronously. The work of the stepping motors drives the rotating gears on the rotating rods to rotate. Since the rotating gears are meshed and connected with the moving tooth plates, the adjacent side limiting plates can move in opposite directions, and the adjacent side limiting plates limit the front and rear ends of the stacked paper corner protectors;

[0016] S3: The controller controls the electric push rod to work, and the lower pressing plate can move downward in the paper corner protector blanking box to squeeze the paper corner protectors. After the lowermost paper corner protector is stressed, the adjacent special-shaped blocks move in opposite directions through the elastic force of the telescopic connecting rods and the compression springs. After the adjacent special-shaped blocks are stressed, the lowermost paper corner protector falls through the blanking port onto the V-shaped flipping feed board;

[0017] S4: Finally, the controller controls the reduction motor on the flipping component to work. The work of the reduction motor drives the driving gear on the driving shaft to rotate. Since the driving gear is meshed and connected with the driven gear, it drives the V-shaped flipping feed board on the rotating rod to rotate, causing the paper corner protector on the V-shaped flipping feed board to rotate, and the paper corner protector rotates 45°. Finally, the electric telescopic rod works, and the work of the electric telescopic rod can drive the pushing board to move, push out the paper corner protector on the V-shaped flipping feed board, and push the paper corner protector with the adjusted angle onto the conveyor belt. The work of the conveyor belt pushes the paper corner protector to the next working station;

[0018] S5: After the paper corner protector is pushed onto the conveyor belt, the reduction motor and the electric telescopic rod automatically reset, so that the pushing board fits against the inner wall of the V-shaped flipping feed board, and the V-shaped flipping feed board resets and faces the blanking port. The subsequent work of the electric push rod can continue to drive the lower pressing plate to move downward, so that the stacked paper corner protectors are sequentially discharged through the blanking port, and then through the work of the flipping component and the electric telescopic rod, the paper corner protector is pushed onto the conveyor belt, thereby realizing a cycle and realizing the cyclic automatic pushing and feeding of the paper corner protector.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. Through the elasticity of the telescopic connecting rods and compression springs in the two groups of cylinders, the adjacent special-shaped blocks can maintain a certain elasticity. After the electric push rod works to drive the lower pressing plate to move downward, the adjacent special-shaped blocks move in opposite directions under force, so that the paper corner protectors stacked in the paper corner protector blanking box are discharged through the blanking port in sequence. Cooperating with the work of the reduction motor on the flipping component, the driving shaft can be driven to rotate the driving gear. Since the driving gear is meshed and connected with the driven gear, the V-shaped flipping feeding board on the rotating rod is driven to rotate 45°. After the electric telescopic rod works, the pushing board is driven to move. After the pushing board moves, the paper corner protectors on the V-shaped flipping feeding board can be pushed out onto the conveyor belt. The work of the conveyor belt pushes the paper corner protectors to the next working station. When the paper corner protectors are pushed onto the conveyor belt, the V-shaped flipping feeding board and the pushing board automatically reset. The subsequent work of the electric push rod can continue to drive the lower pressing plate to move downward, so that the stacked paper corner protectors are discharged through the blanking port in sequence, and then through the work of the flipping component and the electric telescopic rod, the paper corner protectors are pushed onto the conveyor belt, so as to realize the cycle, realize the cyclic automatic pushing and feeding of the paper corner protectors, without manual adjustment, and effectively improve the work efficiency;

[0021] 2. Through the vertical sliding of the operating pull rods in the two groups of U-shaped seats, the sliding of the auxiliary sliding plates and the elasticity of the connecting springs, the positioning blocks can be connected to or disengaged from the positioning grooves opened on the installation strips. The installation strips can be installed on or disengaged from the adjacent installation vertical plates, realizing the quick disassembly and assembly of the paper corner protector blanking box and the adjacent installation vertical plates, and facilitating the maintenance of the paper corner protector blanking box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present invention;

[0023] Figure 2 is a schematic side structural diagram of the present invention;

[0024] Figure 3 is a schematic structural diagram of the paper corner protector blanking box of the present invention;

[0025] Figure 4 is a schematic bottom view structural diagram of the paper corner protector blanking box of the present invention;

[0026] Figure 5 is a schematic connection structural diagram of the paper corner protector blanking box, the flipping component and the V-shaped flipping feeding board of the present invention;

[0027] Figure 6 is a schematic connection structural diagram of the other side of the paper corner protector blanking box, the flipping component and the V-shaped flipping feeding board of the present invention;

[0028] Figure 7 is a schematic internal structural diagram of the paper corner protector blanking box of the present invention;

[0029] Figure 8 This is a partial cross-sectional view of the front structure of the paper corner protector blanking box of the present invention;

[0030] Figure 9 This is a cross-sectional view of the side connection structure of the fixed box and the side limit plate of the present invention;

[0031] Figure 10 This is a cross-sectional view of the front connection structure of the mounting strip and the U-shaped seat of the present invention.

[0032] In the figure: 1, frame; 2, support frame; 3, conveyor belt; 4, paper corner protector blanking box; 5, feed inlet; 6, V-shaped flipping cardboard feeding plate; 7, flipping component; 700, support plate; 701, reduction motor; 702, drive shaft; 703, driving gear; 704, driven gear; 705, rotating rod; 8, fixed plate; 9, mounting vertical plate; 10, mounting strip; 11, U-shaped seat; 12, L-shaped top plate; 13, electric push rod; 14, lower pressing plate; 15, fixed box; 16, cylinder; 17, blanking port; 18, electric telescopic rod; 19, pushing cardboard; 20, stepping motor; 21, moving toothed plate; 22, side limit plate; 23, telescopic connecting rod; 24, compression spring; 25, special-shaped block; 26, rotating gear; 27, positioning groove; 28, operating pull rod; 29, pull ring; 30, positioning block; 31, connecting spring; 32, auxiliary sliding plate. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1:

[0035] Please refer to Figure 1-10The present invention provides a technical solution: an automated paper corner protector feeding device, comprising a frame 1, a conveyor belt 3 is installed on the frame 1, support frames 2 are installed at both ends of the outer walls of both sides of the frame 1, mounting uprights 9 are welded in the middle of the front and rear side walls of the frame 1, and a paper corner protector unloading box 4 is connected between adjacent mounting uprights 9; two groups of support frames 2 are fixedly connected to the outer wall of the upright frame 1, and the entire paper corner protector feeding device is supported by the two groups of support frames 2, the conveyor belt 3 is an existing device, and the specific structure and working principle are not elaborated here, the paper corner protector unloading box 4 is movably installed between adjacent mounting uprights 9, realizing the rapid disassembly and assembly of the paper corner protector unloading box 4 and the mounting uprights 9, which is convenient for the maintenance of the paper corner protector unloading box 4, and a controller is provided on the right outer wall of the paper corner protector unloading box 4, and the electrical ends of each electrical equipment are electrically connected to the external power supply and the electrical ends of the controller through wires;

[0036] A feeding port 5 is provided at the top of the paper corner protection feeding box 4, an L-shaped top plate 12 is installed at the top of the left outer wall of the paper corner protection feeding box 4, an electric push rod 13 is provided on the L-shaped top plate 12, and the telescopic end of the electric push rod 13 is connected to the lower pressure plate 14 through a piston rod, and the front and rear ends of the inner cavity of the paper corner protection feeding box 4 are provided with movable side limit plates 22, and cylinders 16 are installed at the bottom ends of the left and right outer walls of the paper corner protection feeding box 4, and the cylinders 16 are connected to the inner cavity of the paper corner protection feeding box 4, and telescopic connecting rods 23 are connected to the two groups of cylinders 16, and the other end of the telescopic connecting rod 23 is installed with a special-shaped block 25, and the outer wall of the telescopic connecting rod 23 is sleeved with a compression spring 24, and a feeding port 17 is provided at the bottom of the paper corner protection feeding box 4;

[0037] The L-shaped top plate 12 is fixedly connected to the outer wall of the paper corner protection feeding box 4, and the two groups of cylinders 16 are fixedly connected to the outer wall of the paper corner protection feeding box 4. The other end of the telescopic connecting rod 23 is fixedly connected to the special-shaped block 25. The two groups of telescopic connecting rods 23 and the compression spring 24 have a certain elasticity, which can make the adjacent special-shaped blocks 25 maintain a certain elasticity. After the electric push rod 13 works, it drives the lower pressure plate 14 to move downward to squeeze the stacked paper corner protectors in the paper corner protection feeding box 4. The adjacent special-shaped blocks 25 move in opposite directions after being stressed. At this time, the paper corner protectors at the bottom are discharged through the feeding port 17 after being stressed. When the lower pressure plate 14 does not move downward, the adjacent special-shaped blocks 25 fit together to block the paper corner protectors. Each time the electric push rod 13 works, the lower pressure plate 14 moves downward by a certain distance, so that the stacked paper corner protectors in the paper corner protection feeding box 4 are discharged through the feeding port 17 in sequence (one paper corner protector is discharged each time);

[0038] The bottom of the paper corner protection unloading box 4 is connected to two sets of fixed plates 8, and a V-shaped flip paper feeder 6 is arranged between adjacent fixed plates 8. The outer wall of the front fixed plate 8 is provided with a flip component 7 for driving the V-shaped flip paper feeder 6 to rotate;

[0039] After the paper corner protectors in the paper corner protector blanking box 4 are discharged through the blanking port 17, the paper corner protectors fall on the V-shaped flipping feed board 6 (perfectly fitted, with the other side of the paper corner protector contacting the pushing board 19). Then, the flipping component 7 operates to drive the V-shaped flipping feed board 6 to rotate 45°. After the controller makes the electric telescopic rod 18 operate, it drives the pushing board 19 to move. After the pushing board 19 moves, it can push the paper corner protectors on the V-shaped flipping feed board 6 onto the conveyor belt 3. The operation of the conveyor belt 3 pushes the paper corner protectors to the next working station. After the paper corner protectors are pushed onto the conveyor belt 3, the flipping component 7 resets the V-shaped flipping feed board 6, and the electric telescopic rod 18 automatically resets the pushing board 19. Subsequently, the subsequent electric push rod 13 operates to continue driving the lower pressing board 14 to move downward, enabling the stacked paper corner protectors to be discharged through the blanking port 17 in sequence. Then, through the operation of the flipping component 7 and the electric telescopic rod 18, the paper corner protectors are pushed onto the conveyor belt 3, thus realizing a cycle and achieving the cyclic automatic pushing and feeding of the paper corner protectors without manual adjustment, effectively improving the work efficiency.

[0040] Among them, the flipping component 7 includes a support plate 700. The support plate 700 is fixedly connected to the outer wall of the front end fixing plate 8. And a reduction motor 701 is provided on the support plate 700. The output end of the reduction motor 701 is connected to a driving shaft 702. A driving gear 703 is installed on the driving shaft 702. And a driven gear 704 is meshed with the side wall of the driving gear 703. In the middle of the side of the driven gear 704 close to the V-shaped flipping feed board 6, a rotating rod 705 is installed. The rotating rod 705 penetrates through the front end fixing plate 8, and the other end of the rotating rod 705 is rotatably connected to the inner side surface of the rear end fixing plate 8 through a bearing. The outer wall of the rotating rod 705 is connected to the V-shaped flipping feed board 6. An electric telescopic rod 18 is provided on the outer wall of the V-shaped flipping feed board 6, and the telescopic end of the electric telescopic rod 18 is connected to a pushing board 19 through a piston rod;

[0041] Both groups of fixing plates 8 are fixedly connected to the bottom wall of the paper corner protector blanking box 4. The V-shaped flipping feed board 6 is fixedly connected to the rotating rod 705. The operation of the reduction motor 701 can drive the driving gear 703 fixedly connected to the driving shaft 702 to rotate forward or backward. Since the driving gear 703 is meshed with the driven gear 704, the rotating rod 705 fixedly connected to the driven gear 704 can rotate forward or backward, and the V-shaped flipping feed board 6 can rotate, enabling the paper corner protectors on the V-shaped flipping feed board 6 to rotate 45° or automatically reset. After the electric telescopic rod 18 operates, it can drive the pushing board 19 to move, and thus can push the paper corner protectors on the V-shaped flipping feed board 6 onto the conveyor belt 3, and can adjust the positions of the stacked paper corner protectors without manual adjustment of the paper corner protectors, improving the work efficiency.

[0042] Fixed boxes 15 are installed on the outer walls of the front and rear sides of the paper corner protector blanking box 4. Stepping motors 20 are connected to the outer walls of the two groups of fixed boxes 15. The output end of the stepping motor 20 is connected to a rotating rod, and the other end of the rotating rod is rotatably connected to the inner wall of the fixed box 15 through a bearing. A rotating gear 26 is sleeved on the rotating rod. Through holes are formed through the side walls of the two side walls of the fixed box 15 and the side wall of the paper corner protector blanking box 4. A moving tooth plate 21 is slidably connected in the through hole. A plurality of engaging grooves are formed in the moving tooth plate 21, and each group of engaging grooves is engaged with the rotating gear 26. One end of the moving tooth plate 21 close to the lower pressing plate 14 is connected to the outer wall of the side limiting plate 22;

[0043] The moving tooth plate 21 is fixedly connected to the side limiting plate 22, and the fixed box 15 is fixedly connected to the outer wall of the paper corner protector blanking box 4. The stepping motors 20 on the two groups of fixed boxes 15 work synchronously. The work of the stepping motor 20 can drive the rotating gear 26 fixedly connected to the rotating rod to rotate forward or backward. Since the rotating gear 26 is engaged with a plurality of engaging grooves formed in the moving tooth plate 21, and the moving tooth plate 21 is slidably limited through the through holes formed in the side walls of the fixed box 15 and the paper corner protector blanking box 4, the adjacent moving tooth plates 21 and side limiting plates 22 can move in opposite or reverse directions. When the adjacent side limiting plates 22 are respectively attached to the front and rear ends of the stacked paper corner protectors, the adjacent side limiting plates 22 can limit the front and rear ends of the stacked paper corner protectors in the paper corner protector blanking box 4, so that the stacked paper corner protectors are kept in the middle position, ensuring the normal blanking of the paper corner protectors.

[0044] Installation strips 10 are connected to the bottom ends of the outer walls on both sides of the paper corner protector blanking box 4, and the installation strips 10 penetrate through the side walls of the installation vertical plates 9. A positioning groove 27 is formed in the outer top wall of the installation strip 10. A U-shaped seat 11 is connected to the front end face of the installation vertical plate 9, and the opening end of the U-shaped seat 11 faces the top of the installation strip 10; The paper corner protector blanking box 4 is fixedly connected to the two groups of installation strips 10, and the installation vertical plate 9 is fixedly connected to the U-shaped seat 11.

[0045] An operation pull rod 28 is vertically slidably connected in the U-shaped seat 11. A positioning block 30 adapted to the positioning groove 27 is installed at the bottom of the operation pull rod 28. An auxiliary sliding plate 32 is connected to the outer wall of the operation pull rod 28, and the auxiliary sliding plate 32 is slidably connected to the inner wall of the U-shaped seat 11. A connecting spring 31 is sleeved on the outer wall of the operation pull rod 28, and the connecting spring 31 is located between the upper surface of the auxiliary sliding plate 32 and the inner wall of the U-shaped seat 11;

[0046] The operating pull rod 28 is fixedly connected to the positioning block 30 and the auxiliary slide plate 32. When the adjacent mounting vertical plates 9 and the paper corner protector blanking box 4 are installed, first, pull up the operating pull rod 28 in the two groups of U-shaped seats 11 to move the auxiliary slide plate 32 upward. At this time, the connecting spring 31 is in a compressed state, and the positioning block 30 is received in the inner cavity of the U-shaped seat 11. Then, move the paper corner protector blanking box 4 back and forth between the adjacent mounting vertical plates 9 so that the two mounting strips 10 on the outer wall of the paper corner protector blanking box 4 both pass through the through holes on the mounting vertical plates 9, and the front ends of the two mounting strips 10 penetrate through the mounting vertical plates 9, so that the positioning grooves 27 formed on the two mounting strips 10 are both communicated with the inner cavities of the two groups of U-shaped seats 11. When the positioning block 30 is aligned with the positioning groove 27, release the operating pull rod 28, and the compressed connecting spring 31 automatically returns to its original position, causing the auxiliary slide plate 32 and the positioning block 30 to both move downward until the positioning block 30 is connected in the positioning groove 27, and the paper corner protector blanking box 4 is installed between the adjacent mounting vertical plates 9. When the paper corner protector blanking box 4 is disassembled, the operating pull rods 28 in the two groups of U-shaped seats 11 are both pulled up to make the positioning block 30 disengage from the positioning groove 27. At this time, the position of the mounting strip 10 is no longer restricted, and the paper corner protector blanking box 4 is moved back and forth between the adjacent mounting vertical plates 9 to move the mounting strip 10 back and forth, and the mounting strip 10 can then disengage from the through holes formed on the mounting vertical plates 9, and the paper corner protector blanking box 4 can be removed.

[0047] Embodiment 2:

[0048] Referring to Figure 10 , what is different from the first embodiment in this embodiment is that a pull ring 29 is connected to the end of the operating pull rod 28 far from the positioning block 30, and an anti-slip rubber sleeve is sleeved on the hand-held end of the pull ring 29, an anti-slip pad is sleeved on the outer wall of the positioning block 30, and corrugated protrusions are embedded on the inner wall of the positioning groove 27; the pull ring 29 facilitates the pulling of the operating pull rod 28, and the anti-slip rubber sleeve plays an anti-slip role to prevent the hand from slipping off when holding the pull ring 29. The anti-slip pad and the corrugated protrusions increase the friction between the two, improving the stability of the installation of the paper corner protector blanking box 4 on the outer wall of the adjacent mounting vertical plate 9.

[0049] An automatic pushing paper corner protector machine paper feeding device and a paper feeding method include the following steps,

[0050] S1: First, pull up the operating rods 28 inside the two U-shaped seats 11 to move the auxiliary slide plate 32 upward. At this time, the connecting spring 31 is in a compressed state, and the positioning block 30 is received in the inner cavity of the U-shaped seat 11. Then, move the paper corner protector blanking box 4 back and forth between the adjacent mounting vertical plates 9, so that the two mounting strips 10 on the outer wall of the paper corner protector blanking box 4 both pass through the through holes on the mounting vertical plates 9, and the front ends of the two mounting strips 10 penetrate through the mounting vertical plates 9, so that the positioning grooves 27 formed on the two mounting strips 10 are both communicated with the inner cavities of the two U-shaped seats 11. When the positioning block 30 is aligned with the positioning groove 27, release the operating rod 28, and the compressed connecting spring 31 automatically returns to its original position, causing the auxiliary slide plate 32 and the positioning block 30 to both move downward until the positioning block 30 is connected in the positioning groove 27, and the paper corner protector blanking box 4 is installed between the adjacent mounting vertical plates 9;

[0051] S2: Then, electrically connect the electrical ends of each electrical device to the electrical ends of the external power supply and the controller through wires. The controller starts the electric push rod 13 to drive the lower pressing plate 14 to move upward through the piston rod, and add the stacked paper corner protectors into the paper corner protector blanking box 4 from the feeding port 5. Then, the controller starts the two stepping motors 20 to work synchronously. The work of the stepping motor 20 drives the rotating gear 26 on the rotating rod to rotate. Since the rotating gear 26 is meshed and connected with the moving tooth plate 21, the adjacent side limiting plates 22 can move in opposite directions, and the adjacent side limiting plates 22 limit the front and rear ends of the stacked multiple paper corner protectors;

[0052] S3: The controller controls the electric push rod 13 to work, and the lower pressing plate 14 can move downward in the paper corner protector blanking box 4 to squeeze the paper corner protector. After the lowermost paper corner protector is stressed, the adjacent special-shaped blocks 25 move in opposite directions after the elastic action of the telescopic connecting rod 23 and the compression spring 24, so that the lowermost paper corner protector falls through the blanking port 17 onto the V-shaped turning-in cardboard 6;

[0053] S4: Finally, the controller controls the reduction motor 701 on the flipping component 7 to work. The work of the reduction motor 701 drives the driving gear 703 on the driving shaft 702 to rotate. Since the driving gear 703 is meshed and connected with the driven gear 704, it drives the V-shaped turning-in cardboard 6 on the rotating rod 705 to rotate, so that the paper corner protector on the V-shaped turning-in cardboard 6 rotates, and the paper corner protector rotates 45°. Finally, the electric telescopic rod 18 works, and the work of the electric telescopic rod 18 can drive the pushing plate 19 to move, push out the paper corner protector on the V-shaped turning-in cardboard 6, and push the paper corner protector with the adjusted angle onto the conveyor belt 3. The work of the conveyor belt 3 conveys the paper corner protector to the next working station;

[0054] S5: After the paper corner protector is pushed onto the conveyor belt 3, the deceleration motor 701 and the electric telescopic rod 18 automatically reset, so that the push board 19 fits against the inner wall of the V-shaped flipping paper inlet 6, and the V-shaped flipping paper inlet 6 is reset and aligned with the blanking port 17. Subsequently, the electric push rod 13 works to continue driving the lower pressing plate 14 downward, enabling the stacked paper corner protectors to be discharged through the blanking port 17 in sequence. Then, through the operation of the flipping component 7 and the electric telescopic rod 18, the paper corner protector is pushed onto the conveyor belt 3, thereby realizing a cycle and achieving the cyclic and automatic pushing of the paper corner protector for paper feeding.

[0055] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic push paper corner protector machine paper feeding device, including a frame (1), on which a conveyor belt (3) is installed, characterized in that: On both ends of the outer walls on both sides of the frame (1), support frames (2) are installed. On the middle parts of the front and rear side walls of the frame (1), mounting vertical plates (9) are welded. A paper corner protector blanking box (4) is connected between adjacent mounting vertical plates (9). At the top of the paper corner protector blanking box (4), a feed inlet (5) is provided. At the top end of the left outer wall of the paper corner protector blanking box (4), an L-shaped top plate (12) is installed. An electric push rod (13) is provided on the L-shaped top plate (12). And the telescopic end of the electric push rod (13) is connected with a lower pressing plate (14) through a piston rod. On the front and rear ends of the inner cavity of the paper corner protector blanking box (4), side limiting plates (22) are movably arranged. At the bottom ends of the left and right outer walls of the paper corner protector blanking box (4), cylinders (16) are installed. And the cylinders (16) are communicated with the inner cavity of the paper corner protector blanking box (4). Telescopic connecting rods (23) are connected in both groups of cylinders (16). The other end of the telescopic connecting rod (23) is installed with a special-shaped block (25). And a compression spring (24) is sleeved on the outer wall of the telescopic connecting rod (23). At the bottom of the paper corner protector blanking box (4), a blanking port (17) is provided. Two fixing plates (8) are connected to the bottom of the paper corner protector blanking box (4). A V-shaped flipping feeding board (6) is arranged between adjacent fixing plates (8). On the outer wall of the front fixing plate (8), a flipping component (7) for driving the V-shaped flipping feeding board (6) to rotate is provided.

2. The paper corner protector feeding device driven automatically according to claim 1, wherein: The flipping component (7) includes a support plate (700). The support plate (700) is fixedly connected to the outer wall of the front fixing plate (8). And a reduction motor (701) is provided on the support plate (700). The output end of the reduction motor (701) is connected with a driving shaft (702). A driving gear (703) is installed on the driving shaft (702). And a driven gear (704) is meshed and connected to the side wall of the driving gear (703).

3. The paper corner protector machine paper feeding device driven by automation according to claim 2, characterized in that: In the middle of the side of the driven gear (704) close to the V-shaped flipping feeding board (6), a rotating rod (705) is installed. The rotating rod (705) penetrates through the front fixing plate (8). And the other end of the rotating rod (705) is rotationally connected to the inner side surface of the rear fixing plate (8) through a bearing. The outer wall of the rotating rod (705) is connected with the V-shaped flipping feeding board (6). An electric telescopic rod (18) is provided on the outer wall of the V-shaped flipping feeding board (6). And the telescopic end of the electric telescopic rod (18) is connected with a pushing board (19) through a piston rod.

4. The automatic paper corner protector feeding device according to claim 1, characterized in that: Fixed boxes (15) are installed on the front and rear outer walls of the paper corner protector blanking box (4). Stepping motors (20) are connected to the outer walls of both groups of fixed boxes (15). The output end of the stepping motor (20) is connected with a rotating rod. And the other end of the rotating rod is rotationally connected to the inner wall of the fixed box (15) through a bearing. A rotating gear (26) is sleeved on the rotating rod.

5. The paper feeding device of the automatically driven paper corner protector machine according to claim 4, characterized in that: Both side walls of the fixed box (15) and the side walls of the paper corner protector blanking box (4) are provided with through holes. A moving toothed plate (21) is slidably connected in the through holes. A plurality of engaging grooves are formed in the moving toothed plate (21), and each group of engaging grooves is engaged with a rotating gear (26). One end of the moving toothed plate (21) close to the lower pressing plate (14) is connected to the outer wall of the side limiting plate (22).

6. The paper feeding device of the automatically driven paper corner protector machine according to claim 1, characterized in that: Installation strips (10) are connected to the bottom ends of the outer sides of both sides of the paper corner protector blanking box (4), and the installation strips (10) penetrate through the side walls of the installation vertical plates (9). A positioning groove (27) is formed in the outer top wall of the installation strip (10). A U-shaped seat (11) is connected to the front end face of the installation vertical plate (9), and the opening end of the U-shaped seat (11) faces the top of the installation strip (10).

7. The paper feeding device of the automatically driven corner protector machine according to claim 6, characterized in that: An operating pull rod (28) is vertically slidably connected in the U-shaped seat (11), and a positioning block (30) adapted to the positioning groove (27) is installed at the bottom of the operating pull rod (28).

8. The paper feeding device of the automatically driven paper corner protector machine according to claim 7, characterized in that: An auxiliary sliding plate (32) is connected to the outer wall of the operating pull rod (28), and the auxiliary sliding plate (32) is slidably connected to the inner wall of the U-shaped seat (11). A connecting spring (31) is sleeved on the outer wall of the operating pull rod (28), and the connecting spring (31) is located between the upper surface of the auxiliary sliding plate (32) and the inner wall of the U-shaped seat (11).

9. The paper feeding device of the automatically driven paper corner protector machine according to claim 7, wherein: One end of the operating pull rod (28) far from the positioning block (30) is connected to a pull ring (29), and an anti-slip rubber sleeve is sleeved on the hand-held end of the pull ring (29). An anti-slip pad is sleeved on the outer wall of the positioning block (30), and a corrugated protrusion is embedded in the inner wall of the positioning groove (27).

10. A paper feeding method for a paper corner protector machine with automatic pushing according to any one of claims 1-9, characterized in that: The method includes the following steps: S1: First, pull up the operating pull rods (28) in the two U-shaped seats (11) to move the auxiliary sliding plates (32) upward. At this time, the connecting spring (31) is in a compressed state, and the positioning block (30) is received in the inner cavity of the U-shaped seat (11). Then move the paper corner protector blanking box (4) back and forth between the adjacent installation vertical plates (9) so that the two installation strips (10) on the outer wall of the paper corner protector blanking box (4) both pass through the through holes on the installation vertical plates (9), so that the front ends of the two installation strips (10) penetrate through the installation vertical plates (9), and the positioning grooves (27) formed in the two installation strips (10) are both communicated with the inner cavities of the two U-shaped seats (11). When the positioning block (30) is aligned with the positioning groove (27), release the operating pull rod (28), and the compressed connecting spring (31) automatically returns to its original position, so that the auxiliary sliding plate (32) and the positioning block (30) both move downward until the positioning block (30) is connected in the positioning groove (27), and the paper corner protector blanking box (4) is installed between the adjacent installation vertical plates (9); S2: Then, electrically connect the electrical terminals of each electrical device to the electrical terminals of an external power source and a controller through wires. The controller starts the electric push rod (13), and the piston rod drives the lower pressing plate (14) to move upward, adding the stacked paper corner protectors into the paper corner protector blanking box (4) from the feeding port (5). Then the controller starts two groups of stepping motors (20) to work synchronously. The operation of the stepping motors (20) drives the rotating gears (26) on the rotating rods to rotate. Since the rotating gears (26) are meshed and connected with the moving tooth plates (21), the adjacent side limiting plates (22) can move in opposite directions, and the adjacent side limiting plates (22) limit the front and rear ends of the stacked multiple groups of paper corner protectors. S3: The controller controls the electric push rod (13) to work, and the lower pressing plate (14) can move downward in the paper corner protector blanking box (4) to press the paper corner protectors. After the bottom paper corner protector is stressed, the adjacent special-shaped blocks (25) move in opposite directions through the elasticity of the telescopic connecting rods (23) and compression springs (24) after being stressed, so that the bottom paper corner protector falls through the blanking port (17) onto the V-shaped flipping feeding board (6). S4: Finally, the controller controls the reduction motor (701) on the flipping component (7) to work. The operation of the reduction motor (701) drives the driving gear (703) on the driving shaft (702) to rotate. Since the driving gear (703) is meshed and connected with the driven gear (704), it drives the V-shaped flipping feeding board (6) on the rotating rod (705) to rotate, making the paper corner protectors on the V-shaped flipping feeding board (6) rotate, rotating the paper corner protectors by 45°. Finally, the electric telescopic rod (18) works, and the operation of the electric telescopic rod (18) can drive the pushing board (19) to move, pushing out the paper corner protectors on the V-shaped flipping feeding board (6), and pushing the paper corner protectors with adjusted angles onto the conveyor belt (3). The operation of the conveyor belt (3) pushes the paper corner protectors to the next working station. S5: After the paper corner protectors are pushed onto the conveyor belt (3), the reduction motor (701) and the electric telescopic rod (18) automatically reset, making the pushing board (19) fit against the inner wall of the V-shaped flipping feeding board (6), and making the V-shaped flipping feeding board (6) reset and face the blanking port (17). The subsequent operation of the electric push rod (13) can continue to drive the lower pressing plate (14) to move downward, enabling the stacked paper corner protectors to be sequentially discharged through the blanking port (17), and then through the operation of the flipping component (7) and the electric telescopic rod (18), pushing the paper corner protectors onto the conveyor belt (3), thereby realizing a cycle and realizing the cyclic automatic pushing and feeding of the paper corner protectors.

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