Automatic feeding mechanism for coil nail machine

Abstract

The invention relates to the field of coil nail processing, in particular to an automatic feeding mechanism for a coil nail machine. The feeding device comprises a feeding box, a feeding assembly, a conveying assembly, a circulating rotating belt and a feeding assembly. A feeding cavity is formed in the feeding box, a feeding port is formed in the top end, and discharging ports are formed in the two sides correspondingly. The feeding assembly is arranged on the feeding port, and nails to be fed are adjusted to be in a vertical state through the discharging end at the bottom of the feeding assembly. The conveying assembly is arranged on one side of the feeding box and conveys nails to the feeding end of the top of the feeding assembly. The circulating rotating belt is arranged in the feeding cavity and rotates at the original point, and the two sides of the circulating rotating belt extend out of the discharging openings correspondingly. The multiple feeding assemblies are arranged along the circulating rotating belt and are matched with the discharging ends of the feeding assemblies to be in butt joint with nails in a one-to-one correspondence mode. According to the automatic feeding device, the nails are firstly adjusted to be vertical and then converted to be horizontal, finally, the positions of the nails are adjusted to be aligned and consistent, the whole feeding process is automatic and efficient, the positions of the fed nails are neat, the directions of the fed nails are consistent, and the subsequent machining efficiency and effect are improved.

Description

Technical Field

[0001] The invention relates to the field of coil nail processing, and in particular to an automatic feeding mechanism for a coil nail machine. Background Art

[0002] A coil nail machine is a machine specially used for producing coil nails. Coil nails are special nails that are usually rolled into a roll for easy storage and transportation, and fixed by special tools (such as coil nail guns) when in use. During the production process of the coil nail machine, the nails need to be loaded first, and several single nails of the same shape and equidistant arrangement are obtained by loading, and then they are combined with connectors, the nails are connected together, and then rolled into a roll.

[0003] A Chinese patent document with authorization announcement number CN220578441U discloses an automatic feeding mechanism for a coil nail machine, which belongs to the technical field of coil nail machines and includes a coil nail machine body, a mounting frame for installing an automatic feeding device is welded to the side of the coil nail machine body, and a feed hopper is installed at the top of the coil nail machine body, a triangular pad is welded to the top of the mounting frame, and a storage box connected to the feed hopper is installed at the top of the pad, a lifting assembly for assisting in lifting the height is installed on the vertical side of the mounting frame, and a loading assembly for loading is installed on the side of the lifting assembly.

[0004] The above-mentioned automatic feeding mechanism for the coil nail machine has the following shortcomings: the existing automatic feeding mechanism for the coil nail machine has a single function and can only be used for centralized feeding and discharging of nails, that is, the nails after loading are mixed and placed, and before being combined with the connecting parts, they need to be coordinated with vibration plates, guide rails and other equipment again to adjust the position of the nails to be aligned and consistent, so as to achieve the requirements of the same shape and equidistant arrangement of the nails, which prolongs the process of coil nail processing and reduces the efficiency and effect of coil nail processing. Summary of the invention

[0005] In view of the problems existing in the background technology, an automatic feeding mechanism for a coil nail machine is proposed. The nails are first adjusted to vertical, then converted to horizontal, and finally adjusted to align and be consistent. The whole feeding process is automatic and efficient, and the loaded nails are positioned neatly and oriented in a consistent direction, which improves the efficiency and effect of subsequent processing.

[0006] The present invention proposes an automatic feeding mechanism for a nail coiling machine, comprising a feeding box, a feeding assembly, a conveying assembly, a circulating rotating belt and a feeding assembly. A feeding cavity is arranged inside the feeding box, a feeding port connected to the feeding cavity is arranged at the top, and discharge ports connected to the feeding cavity are arranged on both sides; the feeding assembly is arranged on the feeding port, and the nails to be fed are adjusted to a vertical state through the discharge end at the bottom; the conveying assembly is arranged on one side of the feeding box, and the nails are conveyed to the feeding end at the top of the feeding assembly; the circulating rotating belt is arranged to rotate at the origin in the feeding cavity, and the discharge ports are extended on both sides respectively; a plurality of groups of feeding assemblies are arranged along the circulating rotating belt, and the nails are connected one by one by cooperating with the discharge end of the feeding assembly, so as to transform the nails in the vertical state into the horizontal state on the one hand, and adjust the head and tail directions of the nails to be consistent on the other hand.

[0007] Preferably, the feed assembly comprises a feed box located on the feed port; the feed end of the feed box is open, a vibration table is arranged in the middle of the discharge end, and a discharge hole is arranged on the side.

[0008] Preferably, the feed box is moved horizontally along the feed port by a driving structure, and the moving direction is horizontal to the rotation direction of the circulating rotating belt below.

[0009] Preferably, two rows of discharge holes are arranged, respectively located on both sides of the vibration table, and the positions of the two rows of discharge holes are opposite to each other, corresponding to the two ends of each group of loading components; two groups of opening and closing plates are arranged at the bottom of the feed box to respectively control the opening and closing of the two rows of discharge holes; each group of opening and closing plates is provided with opening and closing holes corresponding to the discharge holes one by one, and each group of opening and closing plates is driven to slide by driving structure 2 to adjust the position of the opening and closing holes to be connected with or interlaced with the discharge holes.

[0010] Preferably, the circulating rotating belt includes four groups of electrically controlled rotating rollers; two groups of electrically controlled rotating rollers are located on the discharge port on one side, and two groups of electrically controlled rotating rollers are located on the discharge port on the other side; two groups of rotating belts are arranged, which are respectively sleeved on the two ends of the four groups of electrically controlled rotating rollers to form a double-layer U-shaped origin rotating structure; multiple groups of loading components are arranged along the moving direction of the rotating belt between the double-layer U-shaped origin rotating structures, and feed from the top and discharge from the side as the rotating belt moves.

[0011] Preferably, the feeding assembly includes a mounting seat located between two groups of rotating belts; a limit platform and buffer members located on both sides of the limit platform are arranged on the mounting seat; a limit member 1 for limiting the middle section of the nail is arranged at the upper end of the limit platform, and a driving structure 3 is arranged at the lower end; the two groups of limit members 2 are respectively located on both sides of the limit platform, and the spacing is adjusted by the driving structure 3, which can limit the two ends of the nail on the one hand and supply air to the nail on the other hand.

[0012] Preferably, the buffer component includes a buffer spring located in the mounting groove and a buffer plate connected to the top of the buffer spring; the mounting groove located on the mounting seat corresponds one to one with the position of the discharge hole; the buffer plate is slidably connected to the inner wall of the mounting groove, and an electromagnet is arranged on the buffer plate; and an in-position switch for acting on the electromagnet is arranged in the mounting groove.

[0013] Preferably, a U-shaped replacement groove is provided at the top of the limit platform; locking grooves are provided on both sides of the replacement groove; the limit member includes a limit frame matching the replacement groove; the limit frame is an arc-shaped structure, and blocks matching the locking grooves are provided on both sides; the limit frame is an electromagnet, and when power is turned on, the lower end adsorbs the limit platform and the upper end adsorbs the nails.

[0014] Preferably, the limit platform is rotatably set on the mounting seat; the limit member 2 includes a limit plate connected to the driving structure 3; a force sensor and a mounting frame are set on the limit plate; the force sensor is located on the inner side of the limit plate, and the head and tail positions of the nail are judged by sensing the force area; the fan is rotatably set on one side of the limit plate through the mounting frame to supply air to the nail.

[0015] Preferably, the conveying assembly includes an inclined conveyor belt; the conveyor belt transfers the nails below to the feeding assembly above, and raised interception strips are respectively arranged on both sides of the belt body of the conveyor belt; multiple groups of anti-skid frames perpendicular to the conveying direction are arranged between the two groups of interception strips; and independent feeding chambers are formed between adjacent anti-skid frames.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: through the double-layer U-shaped origin rotation structure, multiple groups of feeding components are driven to move cyclically. During the movement, the nails are adjusted to a vertical state through the upper feeding component, and fall one by one on the corresponding feeding component. The buffer of the feeding component uses the deformation of the buffer spring to buffer the impact force of the nail, and on the other hand, controls the nail to tilt toward the direction of the limit table; then the limit frame converts the nail from a vertical state to a horizontal state by adsorbing the middle section of the nail; then the limit plates on both sides move toward the nail, one group against the head end of the nail, and the other group against the tail end of the nail; using the force sensor to sense and judge the head and tail direction, the position adjustment of the nail can be completed by cooperating with the rotation of the limit table, so that all nails are horizontally aligned and the head and tail directions are consistent. The feeding process is automatic and efficient, and the position of the fed nails is neat and the direction is consistent. After the feeding is completed, the nail moves to the side to cooperate and connect with the connecting piece as the circular rotating belt rotates. The fan can clean, cool and shape the nails, and assist the processing of the nail coiling machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the automatic feeding mechanism for the nail coiling machine of the present invention (viewing angle 1);

[0018] Figure 2Schematic diagram of the automatic feeding mechanism for the nail coiling machine of the present invention (viewing angle 2);

[0019] Figure 3 Schematic diagram of the automatic feeding mechanism for the nail coiling machine of the present invention (viewing angle 3);

[0020] Figure 4 Schematic diagram of the structure of the feed assembly in the present invention (viewing angle 1);

[0021] Figure 5 Schematic diagram of the structure of the feed assembly in the present invention (viewing angle 2);

[0022] Figure 6 It is a schematic diagram of the combined structure of the circulating rotating belt and the feeding assembly in the present invention;

[0023] Figure 7 It is a complete structural schematic diagram of the feeding assembly in the present invention;

[0024] Figure 8 It is a schematic diagram of the disassembled structure of the feeding assembly in the present invention;

[0025] Fig. 9 for Figure 7 Enlarged view of point A in the middle;

[0026] Fig.10 It is a schematic diagram of the structure of the conveying component in the present invention.

[0027] Figure numerals: 1, feeding box; 101, feeding port; 102, discharging port; 2, feeding assembly; 201, feeding box; 202, vibrating table; 203, discharging hole; 204, slider 1; 205, lead screw 1; 206, opening and closing plate; 207, opening and closing hole; 208, slider 2; 209, lead screw 2; 3, conveying assembly; 301, conveying belt; 302, anti-slip frame; 4, circulating rotating belt; 401, rotating belt; 402, electrically controlled rotating roller; 5, feeding assembly Parts; 501, mounting seat; 50101, mounting slot; 50102, mounting hole; 502, limit table; 50201, engaging slot; 503, drive structure three; 504, limit part two; 50401, limit plate; 50402, mounting frame; 50403, fan; 505, limit part one; 50501, block; 50502, limit frame; 506, buffer part; 50601, buffer plate; 50602, buffer spring; 507, motor three. DETAILED DESCRIPTION

[0028] Embodiment 1, as Figure 1-Figure 3As shown, the present invention proposes an automatic feeding mechanism for a nail coiling machine, comprising a feeding box 1, a feeding assembly 2, a conveying assembly 3, a circulating rotating belt 4 and a feeding assembly 5. A feeding chamber is arranged inside the feeding box 1, a feeding port 101 connected to the feeding chamber is arranged at the top, and discharge ports 102 connected to the feeding chamber are arranged on both sides; the feeding assembly 2 is arranged on the feeding port 101, and the nails to be fed are adjusted to a vertical state through the discharge end at the bottom; the conveying assembly 3 is arranged on one side of the feeding box 1, and the nails are conveyed to the feeding end at the top of the feeding assembly 2; the circulating rotating belt 4 is arranged to rotate at the origin in the feeding chamber, and the discharge ports 102 are extended from both sides; the feeding assembly 5 is arranged in multiple groups along the circulating rotating belt 4, and the nails are connected one by one by cooperating with the discharge end of the feeding assembly 2, so as to transform the nails in the vertical state into the horizontal state on the one hand, and adjust the head and tail directions of the nails to be consistent on the other hand.

[0029] Finally, the nails are in a horizontal state with the head and tail facing the same direction. The connecting piece (such as copper-plated iron wire) is located outside the discharge port 102. With the rotation of the circulating rotating belt 4, the nails on the feeding assembly 5 can be connected in sequence with the connecting device, so as to realize feeding and connecting at the same time.

[0030] like Figure 4-Figure 5 As shown, the feed assembly 2 includes a feed box 201 located on the feed port 101; the feed end of the feed box 201 is open, a vibration table 202 is arranged in the middle of the discharge end, and a discharge hole 203 is arranged on the side.

[0031] It should be further explained that the vibration table 202 is configured as a trapezoidal strip arranged along the moving direction of the feed box 201, has a built-in vibration device, and a material guiding slope is arranged on the side wall.

[0032] Under the action of the vibration device, the nails in the feed box 201 enter the discharge holes 203 in sequence in a vertical state, and then fall onto the corresponding loading assembly 5, so that the nails are automatically fed in a vertical state.

[0033] The feed box 201 is moved horizontally along the feed port 101 by the driving structure 1, and the moving direction is horizontal to the rotation direction of the circulating rotating belt 4 below.

[0034] It should be further explained that the driving structure includes a screw 205 driven to rotate by a motor; sliders 204 slidably connected to the edge of the feed port 101 are set on both sides of the feed box 201; the slider 204 is connected to the screw 205 through a thread, driving the feed box 201 to move horizontally.

[0035] The feeding box 201 is moved horizontally to realize mobile feeding, and the feeding flexibility and efficiency are improved by cooperating with the rotation of the circulating rotating belt 4.

[0036] like Figure 4-Figure 5As shown, two rows of discharge holes 203 are arranged, which are respectively located on both sides of the vibration table 202, and the positions of the two rows of discharge holes 203 are opposite to each other, corresponding to the two ends of each group of loading components 5; the bottom of the feed box 201 is provided with two groups of opening and closing plates 206 for respectively controlling the opening and closing of the two rows of discharge holes 203; each group of opening and closing plates 206 is provided with opening and closing holes 207 corresponding to the discharge holes 203 one by one, and each group of opening and closing plates 206 is driven to slide by the driving structure 2 to adjust the position of the opening and closing holes 207 to be connected with or staggered with the discharge holes 203.

[0037] It should be further explained that the driving structure 2 includes a screw 209 driven to rotate by a motor 2; the screw 209 is rotatably arranged at the bottom of the feed box 201; sliders 208 are arranged at both ends of the opening and closing plate 206, and are slidably connected to the feed box 201 through the sliders 208; the sliders 208 are connected to the screw 209 through threads, driving the opening and closing plate 206 to move horizontally.

[0038] The position of the opening and closing hole 207 is adjusted by moving the opening and closing plate 206. When the opening and closing hole 207 is connected with the discharge hole 203, the nail can be dropped for feeding. When the discharge hole 203 on one side is blocked, the discharge position can be switched by moving the opening and closing plate 206, without stopping the machine for maintenance, so as to ensure the discharge efficiency.

[0039] By moving the opening and closing hole 207, the communication range between the opening and closing hole 207 and the discharge hole 203 can be adjusted to match the sizes of nails of different sizes to meet the feeding requirements of nails of different sizes.

[0040] like Figure 6 As shown, the circulating rotating belt 4 includes four groups of electrically controlled rotating rollers 402; two groups of electrically controlled rotating rollers 402 are located on the discharge port 102 on one side, and two groups of electrically controlled rotating rollers 402 are located on the discharge port 102 on the other side; two groups of rotating belts 401 are arranged, which are respectively sleeved on the two ends of the four groups of electrically controlled rotating rollers 402 to form a double-layer U-shaped origin rotating structure; a plurality of feeding components 5 are arranged along the moving direction of the rotating belt 401 between the double-layer U-shaped origin rotating structures, and feed from the top and discharge from the side as the rotating belt 401 moves.

[0041] like Figure 7 As shown, the feeding assembly 5 includes a mounting base 501 located between two groups of rotating belts 401; a limit platform 502 and buffer members 506 located on both sides of the limit platform 502 are arranged on the mounting base 501; a limit member 1 505 for limiting the middle section of the nail is arranged at the upper end of the limit platform 502, and a driving structure 3 503 is arranged at the lower end; two groups of limit members 2 504 are respectively located on both sides of the limit platform 502, and the spacing is adjusted by the driving structure 3 503, which can limit the two ends of the nail on the one hand and supply air to the nail on the other hand.

[0042] It should be further explained that the driving structure three 503 is a double-headed bidirectional cylinder, the cylinder body horizontally passes through the limit platform 502, and the telescopic rods are connected to the limit members 2 504 on the corresponding sides from both sides.

[0043] The nail falls from the discharge hole 203 to the mounting seat 501, and after being buffered by the corresponding buffer 506, it falls on the limiter 1 505. The limiter 1 505 fixes the middle section of the nail, and the two sets of limiters 2 504 move to the two ends of the clamped nail to fix it.

[0044] like Figure 8 As shown, the buffer member 506 includes a buffer spring 50602 located in the mounting groove 50101 and a buffer plate 50601 connected to the top of the buffer spring 50602; the mounting groove 50101 located on the mounting seat 501 corresponds to the position of the discharge hole 203. The buffer plate 50601 is slidably connected to the inner wall of the mounting groove 50101, and an electromagnet is arranged on the buffer plate 50601; and a position switch for acting on the electromagnet is arranged in the mounting groove 50101.

[0045] It should be further explained that the buffer spring 50602 is located on the side of the installation groove 50101 away from the limit platform 502, and the landing point of the nail is located at the center of the installation groove 50101, so that the buffer force on the buffer plate 50601 is uneven, thereby promoting the nail to tilt toward the limit platform 502.

[0046] When the nail falls along the center of the installation slot 50101 to the contact buffer plate 50601, a certain impact force is generated, and the buffer spring 50602 is compressed, driving the contact buffer plate 50601 to fall, passing through the in-place switch, so that the electromagnet is energized to maintain its vertical state. The buffer spring 50602 rebounds and passes through the in-place switch again, so that the electromagnet is de-energized, and the nail tilts toward the direction of the limit table 502.

[0047] like Figure 8 As shown, a U-shaped replacement groove is set at the top of the limit platform 502; engaging grooves 50201 are set on both sides of the replacement groove; the limit member 505 includes a limit frame 50502 matching the replacement groove; the limit frame 50502 is an arc structure, and blocks 50501 matching the engaging grooves 50201 are set on both sides; the limit frame 50502 is an electromagnet, and when powered on, the lower end adsorbs the limit platform 502 and the upper end adsorbs the nails.

[0048] The first stopper 505 is configured as a replaceable structure to match the size of the nail. When the nail is tilted toward the stopper 502, the middle section of the nail is electrically adsorbed and stuck in the stopper 50502, thereby converting the nail from a vertical state to a horizontal state.

[0049] like Fig. 9As shown, a mounting hole 50102 is provided on the mounting seat 501; a motor 3 507 is provided in the mounting hole 50102, driving the upper limit platform 502 to be rotatably provided on the mounting seat 501; the limit member 2 504 includes a limit plate 50401 connected to the driving structure 3 503; a force sensor and a mounting frame 50402 are provided on the limit plate 50401; the force sensor is located on the inner side of the limit plate 50401, and the head and tail positions of the nail are determined by sensing the force area; the fan 50403 is rotatably provided on one side of the limit plate 50401 through the mounting frame 50402 to supply air to the nail.

[0050] When the nail is horizontal, the limit plates 50401 on both sides move toward the nail, one set against the head end of the nail, and the other set against the tail end of the nail. Since the head and tail of the nail are different in shape and size, the force sensor can be used to sense and judge the direction of the head and tail, and all the nails can be adjusted to be horizontally aligned and the head and tail directions are consistent by rotating the limit table 502. In addition, the fan 50403 can clean the nails by supplying air to ensure the subsequent connection effect with the connector. It can also cool and shape the nails after connection to speed up processing efficiency.

[0051] like Fig.10 As shown, the conveying assembly 3 includes an inclined conveyor belt 301; the conveyor belt 301 transfers the nails below to the upper feeding assembly 2, and raised interception strips are respectively arranged on both sides of the belt body of the conveyor belt 301; a plurality of anti-skid frames 302 perpendicular to the conveying direction are arranged between the two groups of interception strips; independent feeding chambers are located between adjacent anti-skid frames 302; nails of different specifications can be placed in different feeding chambers, and automatically loaded onto the feeding assembly 2 through the conveyor belt 301, and the staff replaces the corresponding limit piece 505 from the position of the discharge port 102 to match the nail type.

[0052] Embodiment 2: This embodiment proposes an automatic feeding method for a coil nail machine based on the automatic feeding mechanism for the coil nail machine in Embodiment 1. The feeding steps are as follows:

[0053] S1. The staff installs a limiter 505 matching the nail type from the discharge port 102;

[0054] S2. The nails are placed in the feeding chamber, and as the conveyor belt 301 is transferred to the horizontally movable feeding box 201, the position of the discharge hole 203 is adjusted to correspond to the mounting groove 50101 below;

[0055] S3, the opening and closing plate 206 moves, and the position of the opening and closing hole 207 is connected with the discharge hole 203 on the corresponding side; under the action of the vibration device, the nail enters the discharge hole 203 in a vertical state and is automatically fed into the feed cavity;

[0056] S4, the nail falls from the discharge hole 203 to the mounting seat 501, and falls along the center direction of the mounting groove 50101 to the contact buffer plate 50601, generating a certain impact force, and the buffer spring 50602 is compressed, driving the contact buffer plate 50601 to fall, passing through the in-place switch, so that the electromagnet is energized to maintain its vertical state; the buffer spring 50602 rebounds, passes through the in-place switch again, and the electromagnet is de-energized, and the nail tilts toward the direction of the limit table 502;

[0057] S5, the limiting frame 50502 is energized to absorb the middle section of the nail, so that the nail is stuck in the limiting frame 50502, and the nail is converted from a vertical state to a horizontal state;

[0058] S6. The limit plates 50401 on both sides move toward the nails, with one set against the head end of the nail and the other set against the tail end of the nail; the force sensor is used to sense and determine the head and tail directions, and the limit table 502 is rotated to adjust all the nails to be horizontally aligned and the head and tail directions are consistent;

[0059] S7, fan 50403 can clean the nails by sending air;

[0060] S8, the nails on the top move to the side as the circulating belt 4 rotates; at this time, the connecting piece (such as copper-plated iron wire) is located outside the discharge port 102, and with the matching connecting equipment (welding head), the restricted nails can be connected in turn, and the fan 50403 cools and shapes the connected nails;

[0061] S9, the connected coil nails are removed, and the unloaded loading assembly 5 moves in a circular motion along the circulating rotating belt 4.

[0062] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An automatic feeding mechanism for a nail coiling machine, characterized in that: include: A loading box (1), wherein a loading chamber is arranged inside the loading box (1), a feeding port (101) connected to the loading chamber is arranged at the top, and discharge ports (102) connected to the loading chamber are arranged on both sides; A feeding assembly (2), the feeding assembly (2) is arranged on the feeding port (101), and adjusts the nails to be fed into a vertical state through the discharge end at the bottom; A conveying assembly (3), which is arranged on one side of the loading box (1) and conveys the nails to the feeding end at the top of the feeding assembly (2); A circulating rotating belt (4), the circulating rotating belt (4) is arranged in the feeding chamber to rotate at an origin, and has discharge ports (102) extending out of the two sides respectively; And a feeding assembly (5), wherein a plurality of feeding assemblies (5) are arranged along the circulating rotating belt (4), and the feeding assemblies (5) are matched with the discharge end of the feeding assembly (2) to connect the nails one by one, so as to transform the nails in the vertical state into the horizontal state on the one hand, and adjust the head and tail directions of the nails to be consistent on the other hand.

2. The automatic feeding mechanism for a nail coiling machine according to claim 1, characterized in that: The feed assembly (2) comprises a feed box (201) located on the feed port (101); the feed end of the feed box (201) is open, a vibration table (202) is arranged in the middle of the discharge end, and a discharge hole (203) is arranged on the side.

3. The automatic feeding mechanism for a nail coiling machine according to claim 2, characterized in that: The feed box (201) is moved horizontally along the feed port (101) by means of a driving structure 1, and the moving direction is parallel to the rotation direction of the circulating rotating belt (4) below.

4. The automatic feeding mechanism for a nail coiling machine according to claim 2, characterized in that: The discharge holes (203) are arranged in two rows, respectively located on both sides of the vibration table (202), and the positions of the discharge holes (203) in the two rows are opposite to each other, respectively corresponding to the two ends of each group of feeding components (5); The bottom of the feed box (201) is provided with two groups of opening and closing plates (206) for respectively controlling the opening and closing of the two discharge holes (203); each group of opening and closing plates (206) is provided with an opening and closing hole (207) corresponding to the discharge hole (203) one by one, and each group of opening and closing plates (206) is driven to slide by a second driving structure to adjust the position of the opening and closing hole (207) to be connected with or interlaced with the discharge hole (203).

5. The automatic feeding mechanism for a nail coiling machine according to claim 1, characterized in that: The circulating rotating belt (4) includes four groups of electrically controlled rotating rollers (402); two groups of electrically controlled rotating rollers (402) are located on the discharge port (102) on one side, and two groups of electrically controlled rotating rollers (402) are located on the discharge port (102) on the other side; two groups of rotating belts (401) are arranged, which are respectively sleeved on the two ends of the four groups of electrically controlled rotating rollers (402) to form a double-layer U-shaped origin rotating structure; a plurality of feeding components (5) are arranged between the double-layer U-shaped origin rotating structures along the moving direction of the rotating belt (401), and feed from the top and discharge from the side as the rotating belt (401) moves.

6. The automatic feeding mechanism for a nail coiling machine according to claim 5, characterized in that: The feeding assembly (5) comprises a mounting seat (501) located between two groups of rotating belts (401); a limiting platform (502) and buffer members (506) located on both sides of the limiting platform (502) are arranged on the mounting seat (501); a limiting member 1 (505) for limiting the middle section of the nail is arranged at the upper end of the limiting platform (502), and a driving structure 3 (503) is arranged at the lower end; two groups of limiting members 2 (504) are respectively located on both sides of the limiting platform (502), and the spacing is adjusted by the driving structure 3 (503), so as to limit the two ends of the nail on the one hand and supply air to the nail on the other hand.

7. The automatic feeding mechanism for a nail coiling machine according to claim 6, characterized in that: The buffer member (506) includes a buffer spring (50602) located in the mounting groove (50101) and a buffer plate (50601) connected to the top of the buffer spring (50602); the mounting groove (50101) located on the mounting seat (501) corresponds to the position of the discharge hole (203) one by one; The buffer plate (50601) is slidably connected to the inner wall of the installation groove (50101), and an electromagnet is arranged on the buffer plate (50601); and a position switch acting on the electromagnet is arranged in the installation groove (50101).

8. The automatic feeding mechanism for a nail coiling machine according to claim 6, characterized in that: A U-shaped replacement groove is provided at the top of the limiting platform (502); engaging grooves (50201) are provided on both sides of the replacement groove; The first limiting member (505) includes a limiting frame (50502) matching the replacement slot; the limiting frame (50502) is an arc-shaped structure, and blocks (50501) matching the locking slot (50201) are arranged on both sides; The limit frame (50502) is an electromagnet, and when powered on, the lower end adsorbs the limit platform (502) and the upper end adsorbs the nail.

9. The automatic feeding mechanism for a nail coiling machine according to claim 6, characterized in that: The limiting platform (502) is rotatably arranged on the mounting seat (501); The second limiting member (504) includes a limiting plate (50401) connected to the driving structure (503); A force sensor and a mounting frame (50402) are arranged on the limiting plate (50401); the force sensor is located on the inner side of the limiting plate (50401) and determines the head and tail positions of the nail by sensing the force area; the fan (50403) is rotatably arranged on one side of the limiting plate (50401) through the mounting frame (50402) to supply air to the nail.

10. The automatic feeding mechanism for a nail coiling machine according to claim 1, characterized in that: The conveying assembly (3) comprises a conveying belt (301) arranged obliquely; the conveying belt (301) transfers nails at the bottom to the feeding assembly (2) at the top, and raised interception bars are respectively arranged on both sides of the belt body of the conveying belt (301); and a plurality of anti-slip frames (302) perpendicular to the conveying direction are arranged between two groups of interception bars; An independent feeding chamber is formed between adjacent anti-slip frames (302).

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