U-shaped pneumatic strip nail buckling mechanism

Abstract

The utility model provides a U-shaped pneumatic strip nail buckling mechanism, and belongs to the technical field of nail making equipment, a buckling device is installed on the portion, corresponding to the output end of a conveying belt, of a rack, the buckling device comprises a rotating disc, a connecting rod, a micro motor, a pendulum bob, a magnetic block and a nail receiving plate, the rotating disc is rotationally connected to the output end of the rack, and the connecting rod is arranged on the rotating disc; connecting rods are arranged on the periphery of the rotating disc at intervals, the ends, close to one side of the conveying belt, of the connecting rods are connected with a pendulum bob and a magnetic block respectively, the pendulum bob and the magnetic block can attract the strip nails to move, and the strip nails carried by the pendulum bob move in the original direction. The row nails carried by the magnetic block are turned over while moving, a nail receiving plate is fixedly arranged on the side edge of the rack corresponding to the position of the rotating plate, and the row nails are stopped on the nail receiving plate after the pendulum bob passes through the nail receiving plate; after the strip nails attracted by the magnetic block are turned over, the strip nails can be buckled on the strip nails conveyed by the pendulum bob. According to the mechanism, the arranged nails are vertically buckled through the conveying belt, the mechanism is simple, instruction programs are few, the buckling speed is increased, and efficiency is improved.

Description

Technical Field

[0001] This application belongs to the field of nail processing, involves the buckling treatment of nails, and specifically is a U-shaped pneumatic nail buckling mechanism. Background Art

[0002] Pneumatic nails (similar in shape to staples) are widely used in various industries. The operation of nailing with a pneumatic nail gun is used to replace the traditional operation of hammering with a hammer. When producing and manufacturing nails, it was originally to manually buckle single pieces into pairs, with five pairs in a layer, and stack five layers for boxing.

[0003] There are mainly two types of automatic buckling mechanisms currently promoted in the nail manufacturing industry: One is the tooth-shaped piece flipping method: It is a clockwise rotating disk. A pendulum that keeps the nail mouth vertically upward is used to hold up a piece of nail, and a tooth-shaped piece is used to hold up a piece of nail. When it rotates to the buckling state position, it buckles. The buckled pair is then output by a conveyor belt. The disadvantage of this type of mechanism is that the rotating disk cannot rotate quickly, otherwise the piece of nail held up by the tooth-shaped piece is likely to be thrown out and cannot be buckled. Moreover, according to the nail length, the corresponding angles between the pendulum fixed disk and the tooth-shaped disk need to be adjusted. The biggest defect is that it cannot buckle long nails. At the moment of buckling, due to the weight inertia of the nail itself, it is easy to fall down and cannot stand, and the buckled pair is separated again on the conveyor belt.

[0004] The other is the buckling method using a rotating cylinder: Using a proximity switch signal instruction to pull a cylinder to pull five single nails into the rotating mechanism at the same time. After receiving the instruction, the rotating cylinder rotates 180 degrees. After receiving the instruction, the pulling cylinder pulls in five single nails again. Five pairs are buckled simultaneously in the rotating mechanism. The buckled five pairs are pushed out by the pushing cylinder that receives the instruction. The disadvantage of this mechanism is that there are many instructions and many steps. Similarly, it cannot become fast. The biggest defect is that the height of the two nail-receiving parts of the rotating mechanism must be adjusted for each nail length. Summary of the Invention

[0005] The purpose of this application is to overcome the deficiencies of the prior art and provide a U-shaped pneumatic nail buckling mechanism. The following technical solutions are adopted:

[0006] A U-shaped pneumatic nail buckling mechanism includes a frame, a conveyor belt, and a buckling device. A horizontal conveyor belt is arranged at the upper end of the frame. Nails are continuously conveyed along the horizontal length direction on the conveyor belt. A buckling device is installed on the frame corresponding to the output end of the conveyor belt. The buckling device includes a rotating disk, a connecting rod, a micro motor, a pendulum, a magnetic block, and a nail receiving plate. The rotating disk is rotatably connected to the output end of the frame. The outer periphery of the rotating disk is provided with connecting rods at intervals. The end parts of the connecting rods on the side close to the conveyor belt are respectively connected with a pendulum and a magnetic block. Both the pendulum and the magnetic block can adsorb nails to move. The pendulum maintains a fixed posture, and the nail carried by the pendulum moves in the original direction. The magnetic block rotates synchronously with the rotating disk, and the nail carried by the magnetic block moves and flips simultaneously.

[0007] A nail receiving plate is fixedly installed on the side of the frame corresponding to the position of the rotating plate. A relief groove through which the pendulum can pass is provided on the nail receiving plate. The length of the relief groove is less than that of the row of nails. After the pendulum passes through the relief groove, the row of nails is blocked and stays on the nail receiving plate. The row of nails adsorbed by the magnet can be flipped and buckled on the row of nails conveyed by the pendulum.

[0008] By adopting the above technical solution, the pendulum and the magnet alternately lift the row of nails from the conveyor belt, and both the pendulum and the magnet can attract the row of nails. The pendulum maintains a fixed posture, so that the carried row of nails also moves in the same direction as on the conveyor belt. The row of nails is placed on the nail receiving plate with the opening facing upward, and the magnet carries the row of nails and flips it 180° while moving, so that the row of nails with the opening facing downward is buckled on the row of nails with the opening facing upward to complete a set of relative buckling. This mechanism does not limit the length of the row of nails and can work continuously with the rotation of the rotating disk, with high processing efficiency.

[0009] Preferably, the pendulum is eccentrically connected to the end of the connecting rod through a pin shaft. The center of gravity of the pendulum droops, so that it always maintains a posture with the fixed end face upward. A magnet is fixedly installed on the fixed end face of the pendulum.

[0010] By adopting the above technical solution, the pin shaft is eccentrically connected to one end of the pendulum, and the center of gravity of the pendulum always remains at the lower part. Thus, while the pendulum rotates with the rotating disk, it maintains a fixed posture by itself. The upper end of the pendulum is the fixed end face, and a magnet is provided to more stably attract the carried row of nails.

[0011] Preferably, the magnet is connected to the end of the connecting rod through a torsion spring assembly, and the torsion direction of the torsion spring assembly is perpendicular to the central axis of the rotating disk.

[0012] By adopting the above technical solution, the magnet can stably attract the row of nails during transmission, and can flip and disengage from the row of nails after placing the row of nails, continue to rotate smoothly with the rotating disk, and wait for grasping the next row of nails after automatic reset.

[0013] Preferably, a nail pushing wedge iron disk is fixedly installed on the side of the rotating disk away from the conveyor belt. A wedge-shaped guiding slope is provided on the side of the nail pushing wedge iron disk facing the rotating disk; the pin shaft of the pendulum is slidably and limit-connected to the end of the connecting rod, and one end of the pin shaft abuts against the nail pushing wedge iron disk, and a return spring is sleeved on the pin shaft.

[0014] By adopting the above technical solution, the nail pushing wedge iron disk is provided with a wedge-shaped guiding slope for cooperating with the pendulum, which can make the pendulum deviate by squeezing the pin shaft of the pendulum, so that the row of nails carried by the pendulum is translated and placed on the nail receiving plate, preventing the nail tips from affecting the buckling relatively.

[0015] Preferably, a cylinder is fixedly mounted at the lower end of the nail connecting plate, the telescopic rod of the cylinder has a telescopic direction that is the same as the conveying direction of the conveyor belt, and a nail pulling plate is fixedly mounted at the end of the telescopic rod of the cylinder, which can slide in and out of the clearance groove of the nail connecting plate to push the row of nails to move.

[0016] By adopting the above technical solution, a nail pulling plate for output is installed on the nail connecting plate. The nail pulling plate is controlled by the cylinder to push the fastened row of nails to move a fixed distance, leaving space for the next group of nails to be fastened.

[0017] Preferably, a proximity switch is installed on the frame at a corresponding snap-fit ​​position, and the proximity switch is electrically connected to the cylinder via a circuit.

[0018] By adopting the above technical solution, installing a proximity switch can automatically detect the completion of the fastening, start the action of the cylinder, automatically push the nail row, and automatically produce continuously.

[0019] Preferably, a nail blocking strip is fixedly mounted on the frame corresponding to the output end of the conveyor belt.

[0020] By adopting the above technical solution, the nail blocking bar cooperates with the frame, and the rows of nails are blocked by the nail blocking bar and stacked continuously on the output end of the conveyor belt. The rows of nails delivered by the conveyor belt can stop at the same position in sequence, waiting to be grabbed by the pendulum or the magnetic block, thereby ensuring accurate corresponding fastening.

[0021] Preferably, the number of connecting rods spaced apart on the outer circumference of the rotating disk is two, four or other multiples of two, and pendulums and magnetic blocks are sequentially spaced apart at the protruding ends of the connecting rods.

[0022] By adopting the above technical solution, different numbers can be set according to the length of the row of nails and the speed of rotation, and it is ensured that the pendulum and the magnetic block are arranged alternately in sequence.

[0023] Preferably, the driving shaft of the rotating disk is coaxially connected to a micro motor, and the micro motor is fixedly connected to the frame via a fixing plate.

[0024] By adopting the above technical solution, the micro motor is stably connected to the frame through the fixing plate, thereby ensuring the supporting force and thus ensuring the uniform and continuous rotation.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] This mechanism uses the nails arranged on the conveyor belt to fasten vertically, which completely solves the defects of the two automatic fastening mechanisms used in the existing industry:

[0027] 1. No need to adjust any parts of the mechanism according to the top length, easy to operate.

[0028] 2. The structure is simple and there are few instruction procedures.

[0029] 3. Improve the snap-on speed. The nailing machine and snap-on can be synchronized, which solves the bottleneck of nailing frequency limited by the snap-on frequency and improves the nailing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of this organization.

[0031] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A in the middle.

[0032] Figure 3 It is a structural schematic diagram of the fastening device part from another perspective.

[0033] Figure numerals: 1. row of nails; 2. conveyor belt; 3. frame; 4. pendulum; 5. nail pushing wedge plate; 6. magnetic block; 7. nail connecting plate; 8. nail pulling plate; 9. connecting rod; 10. micro motor; 11. nail blocking strip; 12. fixing pin; 13. cylinder; 14. rotating disk; 15. torsion spring assembly; 16. clearance groove; 17. proximity switch. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings.

[0035] A type of pneumatic nail fastening mechanism, see attached Figure 1 As shown, it includes a frame 3, a conveyor belt 2 and a fastening device. A horizontal conveyor belt 2 is arranged on the upper end of the frame 3. The row of nails 1 are continuously conveyed along the horizontal length direction on the conveyor belt 2. A nail blocking strip 11 is fixedly installed on the frame 3 corresponding to the output end of the conveyor belt 2. The row of nails 1 are blocked by the nail blocking strip 11 and are continuously stacked on the output end of the conveyor belt 2. A fastening device is installed on the frame 3 corresponding to the output end of the conveyor belt 2.

[0036] See attached Figure 2 , 3 As shown, the snap-fitting device includes a rotating disk 14, a connecting rod 9, a micro motor 10, a pendulum 4, a magnetic block 6 and a nail receiving plate 7. A rotating disk 14 is installed at the output end of the frame 3. Connecting rods 9 are arranged at intervals on the outer periphery of the rotating disk 14. Four connecting rods 9 are evenly arranged at intervals on the outer periphery of the rotating disk 14 of this embodiment. The protruding ends of the connecting rods 9 are respectively connected to the pendulum 4 and the magnetic block 6. The pendulum 4 and the magnetic block 6 are arranged alternately in sequence. A nail receiving plate 7 is fixedly installed on the side of the frame 3 corresponding to the position of the rotating plate. A clearance groove 16 is provided on the nail receiving plate 7 for the pendulum 4 to pass through. The length of the clearance groove 16 is less than the row of nails 1. After the pendulum 4 passes through the row of nails 1, it stays on the nail receiving plate 7.

[0037] The driving shaft of the rotating disk 14 is coaxially connected to a micro motor 10 , and the micro motor 10 is fixedly connected to the frame 3 via a fixing plate.

[0038] The pendulum 4 is eccentrically connected to the end of the connecting rod 9 through a pin shaft. Due to the effect of gravity, the pendulum 4 always keeps the fixed end surface facing upward during the rotation of the rotating disk 14. A magnet is fixedly installed on the fixed end surface of the pendulum 4 to attract the row of nails 1 lifted by the pendulum 4 at a fixed position. The row of nails 1 carried by the pendulum 4 always maintains the same direction as that on the conveyor belt 2 and is sent to the nail receiving plate 7.

[0039] The magnet 6 can stably absorb the row of nails 1 and rotate with the turntable. The magnet 6 is connected to the end of the connecting rod 9 through the torsion spring assembly 15. The torsion direction of the torsion spring assembly 15 is perpendicular to the axial direction of the rotating disk. The row of nails 1 moves with the magnet 6 and flips to reach the top of the nail plate 7. The row of nails 1 carried by the magnet 6 is buckled on the row of nails 1 prevented by the pendulum 4. At this time, as the rotating disk 14 continues to rotate, the magnet 6 flips with the torsion spring assembly 15, so that the magnet 6 is separated from the row of nails 1; a group of row of nails 1 is buckled.

[0040] See attached Figure 3 As shown, in order to ensure accurate misalignment when the row of nails 1 are relatively buckled, a nail-pushing wedge plate 5 is fixedly installed on the fixed plate between the rotating disk 14 and the micro motor 10, and a wedge-shaped guide slope is provided on the side of the nail-pushing wedge plate 5 facing the rotating disk 14; the pin shaft of the pendulum 4 is slidably limited and connected to the end of the connecting rod 9, and one end of the pin shaft abuts against the nail-pushing wedge plate 5, and the pendulum 4 is offset and placed on the nail receiving plate 7 by a fixed distance. A reset spring is mounted on the pin shaft, and when the pendulum 4 is separated from the nail-pushing wedge plate 5, the spring drives the pendulum 4 to reset.

[0041] A cylinder 13 is fixedly mounted at the lower end of the nail plate 7, and the telescopic rod of the cylinder 13 has the same telescopic direction as the conveying direction of the conveyor belt 2. A nail pulling plate 8 is fixedly mounted at the end of the telescopic rod of the cylinder 13, and the nail pulling plate 8 can be embedded in the clearance groove 16 of the nail plate 7. The moving distance of the nail pulling plate 8 is greater than the width of a row of nails 1.

[0042] A proximity switch 17 is installed on the frame 3 corresponding to the fastening position. The proximity switch 17 is electrically connected to the cylinder 13 through a line. When the proximity switch 17 detects that a group of nails 1 are fastened, the cylinder 13 is driven to operate. The action interval of the cylinder 13 can also be set according to the rotation speed of the rotating disk 14 to automatically push the nails 1 that have been fastened.

[0043] The action principle of the buckle-type pneumatic nail arrangement 1 fastening mechanism described in this embodiment is described in detail:

[0044] 1. The row of nails 1 from the nailing machine is sent by the conveyor belt 2, and the nail blocking strip 11 blocks the row of nails 1, and the row of nails 1 is stacked in sequence at the output end of the conveyor belt 2;

[0045] 2. Driven by the micro motor 10, the rotating disk 14 rotates clockwise at a constant speed.

[0046] 3. The pendulum 4 holds up a row of nails 1 and rotates with the rotating disk 14. The pendulum 4 is kept plumb by its own weight and rotates with the rotating disk 14. The fixed end face of the fixed pendulum 4, which serves as the nail-supporting surface, is equipped with a magnet to hold the row of nails 1. When the row of nails 1 rotates to the nail-receiving plate 7, the row of nails 1 is blocked and stays on the nail-receiving plate 7 by overcoming the magnetic force on the pendulum 4.

[0047] To prevent the nail tips of the row of nails 1 on the rear piece from touching each other when they are buckled in, when the pendulum 4 rotates 90 degrees with the rotating disk 14, the pin shaft of the pendulum 4 abuts against the inclined surface of the nail-pushing wedge iron disk 5. The pin shaft is squeezed, thereby driving the pendulum 4 to push the row of nails 1 a dislocation distance along the conveying direction and stay on the nail-receiving plate 7, waiting for the row of nails 1 in the rear to be buckled in.

[0048] 4. As the rotating disk 14 rotates, the magnet 6 attracts the next row of nails 1. The row of nails 1 flips 180 degrees with the rotating disk 14. The flipped row of nails 1 is buckled on the row of nails 1 already on the nail-receiving plate 7. A group of rows of nails 1 is completed in buckling, and the row of nails 1 is blocked and stays on the nail-receiving plate 7.

[0049] 5. As the rotating disk 14 continues to rotate, the torsion spring assembly 15 of the magnet 6 is stressed and flips. The torsion spring assembly 15 can rotate along the plumb direction, so that the magnet 6 flips and disengages from the row of nails 1 and continues to slide down. After the magnet 6 moves away from the nail-receiving plate 7, the torsion spring assembly 15 drives the magnet 6 to reset.

[0050] 6. The air cylinder 13 receives an action instruction and drives the nail-pulling plate 8 to move, pushing the combined row of nails 1 buckled on the nail-receiving plate 7. The pushing distance only needs to be greater than the processing distance of the next row of nails 1.

[0051] 7. As the rotating disk 14 rotates, the pendulum 4 and the magnet 6 successively lift the row of nails 1 at the very end of the output end of the conveyor belt 2 and send the row of nails 1 to the nail-receiving plate 7. The row of nails 1 sent on the conveyor belt 2 reaches the position of the limiting end of the nail-blocking strip 11, so that the row of nails 1 is continuously lifted by the pendulum 4 and the magnet 6 respectively and buckled and output one by one.

[0052] The above are all the preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A U-shaped pneumatic nail fastening mechanism, comprising a frame (3), a conveyor belt (2) and a fastening device. The conveyor belt (2) in the horizontal direction is arranged at the upper end of the frame (3). Nails (1) are continuously conveyed along the horizontal length direction on the conveyor belt (2). The fastening device is installed on the frame (3) corresponding to the output end of the conveyor belt (2). It is characterized in that: The buckling device comprises a rotating disk (14), a connecting rod (9), a micro motor (10), a pendulum (4), a magnetic block (6) and a nail connecting plate (7); the rotating disk (14) is rotatably connected to the output end of the frame (3); connecting rods (9) are arranged at intervals on the outer periphery of the rotating disk (14); the ends of the connecting rods (9) on the side close to the conveyor belt (2) are respectively connected to the pendulum (4) and the magnetic block (6); the pendulum (4) and the magnetic block (6) can both lift and adsorb the row of nails (1) to move; the pendulum (4) maintains a fixed posture; the row of nails (1) carried by the pendulum (4) maintains the original direction of movement; the magnetic block (6) rotates synchronously with the rotating disk (14); the row of nails (1) carried by the magnetic block (6) moves and flips 180 degrees at the same time; A nail receiving plate (7) is fixedly mounted on the side of the frame (3) corresponding to the position of the rotating plate. The nail receiving plate (7) is provided with a clearance groove (16) through which the pendulum (4) can pass. The length of the clearance groove (16) is smaller than the row of nails (1). After the pendulum (4) passes through the clearance groove (16), the row of nails (1) is blocked and stays on the nail receiving plate (7). The row of nails (1) adsorbed by the magnetic block (6) can be buckled on the row of nails (1) transmitted by the pendulum (4) after turning over.

2. The U-shaped pneumatic nail fastening mechanism according to claim 1, characterized in that: The pendulum (4) is eccentrically connected to the end of the connecting rod (9) via a pin shaft, and the center of gravity of the pendulum (4) is drooped so as to always maintain a posture in which the fixed end face is facing upwards, and a magnet is fixedly mounted on the fixed end face of the pendulum (4).

3. The U-shaped pneumatic nail fastening mechanism according to claim 1, characterized in that: The magnetic block (6) is connected to the end of the connecting rod (9) via a torsion spring assembly (15), and the torsion direction of the torsion spring assembly (15) is perpendicular to the central axis of the rotating disk.

4. The U-shaped pneumatic nail fastening mechanism according to claim 1, characterized in that: A push pin wedge plate (5) is fixedly mounted on the side of the rotating disk (14) away from the conveyor belt (2), and a wedge-shaped guide slope is arranged on the side of the push pin wedge plate (5) facing the rotating disk (14); the pin shaft of the pendulum (4) is slidably limited and connected to the end of the connecting rod (9), and one end of the pin shaft abuts against the push pin wedge plate (5), and a return spring is sleeved on the pin shaft.

5. The U-shaped pneumatic nail fastening mechanism according to claim 1, characterized in that: A cylinder (13) is fixedly mounted at the lower end of the nail plate (7), and the telescopic rod of the cylinder (13) has a telescopic direction that is the same as the conveying direction of the conveyor belt (2). A nail pulling plate (8) is fixedly mounted at the end of the telescopic rod of the cylinder (13), and the nail pulling plate (8) can slide in and out of the clearance groove (16) of the nail plate (7) to push the row of nails (1) to move.

6. The U-shaped pneumatic nail fastening mechanism according to claim 5, characterized in that: A proximity switch (17) is installed on the frame (3) at a corresponding snap-fit ​​position, and the proximity switch (17) is electrically connected to the cylinder (13) via a circuit.

7. The U-shaped pneumatic nail fastening mechanism according to claim 1, characterized in that: A nail blocking strip (11) is fixedly mounted on the frame (3) corresponding to the output end of the conveyor belt (2).

8. The U-shaped pneumatic nail fastening mechanism according to claim 1, characterized in that: The number of connecting rods (9) arranged at intervals on the outer circumference of the rotating disk (14) is two, four or other multiples of two, and the protruding ends of the connecting rods (9) are sequentially arranged with pendulums (4) and magnetic blocks (6) at intervals.

9. The U-shaped pneumatic nail fastening mechanism according to claim 1, characterized in that: The driving shaft of the rotating disk is coaxially connected with a micro motor, and the micro motor is fixedly connected to the frame through a fixing plate.

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