A posture correction feeding device for automatic feeding of steel nails

Abstract

The present application relates to the technical fields of fastener automation feeding, in particular to a posture correction feeding device for steel nail automatic feeding; it comprises a base, a gantry, a vibration assembly, a sliding table assembly and a chuck assembly; the vibration assembly is matched with a vibrating disc, a main discharging track, a limiting plate and a clamping groove, so that the steel nail is automatically changed from a lying posture to a vertical posture with the nail cap on top, and enters the limiting groove through the branch discharging track; the single steel nail is pushed into the pipe joint under the driving of the first air cylinder, vertically falls into the jig groove of the sliding table assembly through the adapter pipe; after the steel nail is confirmed in place by the probe detection, the sliding table moves the steel nail to the chuck assembly, and the clamping jaw piece tightly holds the nail cap to complete the clamping; the present application realizes the pure mechanical correction of the steel nail posture and the multi-path single-piece distribution, and has the advantages of simple and reliable structure and strong practicability.

Description

Technical Field

[0001] This invention relates to the field of automated fastener feeding technology, and in particular to a posture correction feeding device for automatic feeding of steel nails. Background Technology

[0002] The posture correction feeding device for automatic steel nail feeding is an automated feeding equipment used to organize bulk steel nails into a uniform posture and transport them one by one to a designated position. It is widely used in fastener manufacturing, hardware assembly and building auxiliary material production and is a key link in realizing the automated feeding of steel nail materials.

[0003] In existing automatic nail feeding devices, the nails output by the vibratory feeder are mostly lying flat or in random positions, with the nail head and nail shank facing different directions, making them unusable in subsequent processes. To solve the posture correction problem, traditional solutions typically install limiting baffles or guide grooves at the vibratory feeder outlet, using the size difference between the nail head and nail shank for screening. However, when nails are densely fed in the vibratory feeder, inverted nails are blocked by the baffle and cannot easily flip over on their own, easily accumulating and jamming at the baffle, leading to frequent equipment shutdowns for cleaning. Although guide grooves can guide some nails to a vertical position, due to the dimensional tolerances between individual nails, the groove width cannot accommodate all nails; if it is too tight, nails will jam; if it is too loose, the correction will fail.

[0004] Furthermore, most existing vibratory feeders use a single-path discharge method. When subsequent processes require parallel material supply to multiple stations, there is a lack of effective material distribution mechanisms. Usually, the steel nails can only be distributed manually to each station, or multiple vibratory feeders can be added for separate material supply. This not only occupies a lot of space and is costly, but also makes it difficult to synchronize the material supply rhythm between stations, affecting overall production efficiency. A few machines have attempted to use a vibratory feeder in conjunction with a diversion guide rail to achieve multi-path material supply, but the steel nails are prone to accumulation and blockage at the branching points due to mutual compression, making it impossible to achieve stable and reliable one-by-one distribution of each nail.

[0005] Therefore, this application provides a posture correction feeding device for automatic feeding of steel nails to solve the problems mentioned in the background art. Summary of the Invention

[0006] The purpose of this invention is to provide a posture correction feeding device for automatic feeding of steel nails, which solves the problems of steel nails being prone to tilting and the inability to achieve multi-channel single-nail feeding in existing automatic feeding devices.

[0007] To solve the above-mentioned technical problems, the present invention provides a posture correction feeding device for automatic feeding of steel nails, including a base, a gantry frame mounted on the base, a vibration assembly mounted on the top of the gantry frame, a slide assembly mounted on the base and below the crossbeam of the gantry frame, and a clamp assembly mounted on one side of the slide assembly; the vibration assembly is used to organize the bulk steel nails into a vertical posture with the nail head on top and the nail shaft on the bottom and output them one by one; the slide assembly is used to receive the steel nails from the vibration assembly and move the steel nails to the picking position; the clamp assembly is used to grab the steel nails at the picking position and clamp them for subsequent processes.

[0008] A further improvement of the technical solution of the present invention is that: the vibration component includes a vibratory plate, the conveying end of the vibratory plate is connected to the main discharge track, a limiting plate is set at the initial position of the main discharge track, a limiting channel is constructed between the limiting plate and the main discharge track, and the height of the limiting channel is only for the steel nail head to pass through in a horizontal posture; a clamping groove is opened at the bottom of the main discharge track, the clamping groove extends along the length direction of the main discharge track, and the width of the clamping groove is smaller than the diameter of the steel nail head and larger than the diameter of the steel nail rod.

[0009] A further improvement of the technical solution of the present invention is that: multiple branch discharge tracks are connected on the main discharge track, the angle between the branch discharge track and the main discharge track is not less than 120°, and the bottom of the branch discharge track is also provided with a clamping groove. The main discharge track is a straight track, and the branch discharge track is an arc track. The clamping groove is a rectangular groove that runs through the length of the track, and the width of the clamping groove is 0.5-1mm larger than the diameter of the steel nail rod.

[0010] A further improvement of the technical solution of the present invention is as follows: a knife fixing block is provided on the top of the gantry frame, and a knife controlled by a first cylinder is provided on the knife fixing block. A material distribution groove is opened on the knife, and the size of the material distribution groove is adapted to a single steel nail; an insert is provided on the top of the knife fixing block, and multiple limiting grooves are opened on the insert and the knife fixing block together, and each limiting groove receives the end of a material distribution track; a pipe joint is opened at the end of each limiting groove at a horizontal distance of one body length from the steel nail, the pipe joint is set vertically downward, and the lower end of the pipe joint is connected to the adapter pipe, which extends vertically downward to the slide assembly.

[0011] A further improvement of the technical solution of the present invention is as follows: the steel nail is conveyed in a flat state within the spiral track of the vibratory feeder. When the steel nail is conveyed to the clamping groove at the end of the vibratory feeder, the nail rod falls into the clamping groove under the action of vibration, making the steel nail vertical and continuing to be conveyed with the nail head on top. When the steel nail passes through the limiting channel below the limiting plate along the main discharge track, the steel nail that has not entered the clamping groove is blocked by the limiting plate and tries again under the action of vibration until the nail rod enters the clamping groove. The steel nail is conveyed along the main discharge track to each branch discharge track, and then enters the limiting groove jointly opened on the insert and the insert fixing block from the branch discharge track. The steel nail is neatly arranged in the limiting groove. The steel nail at the front is squeezed into the branch groove of the insert. The first cylinder pushes the insert to move the position of one steel nail, pushing the individual steel nail in each row of limiting grooves into the pipe joint. The steel nail slides vertically downward into the transfer pipe.

[0012] A further improvement of the technical solution of the present invention is that: the adapter pipe is a vertically arranged straight pipe, the upper end of the adapter pipe is sealed to the pipe joint, the inner diameter of the adapter pipe is larger than the diameter of the steel nail head, and the difference between the inner diameter of the adapter pipe and the diameter of the steel nail head is 1-2mm, so that the steel nail remains vertically falling with the nail head on top.

[0013] A further improvement of the technical solution of the present invention is that: the slide assembly includes a slide, which is controlled by a second cylinder to reciprocate in the horizontal direction. A fixture is provided on the slide, and multiple grooves are formed on the fixture. The number of grooves is the same as the number of adapter pipes, and each groove is located directly below an adapter pipe. A push block is provided on one side of the fixture. The push block is controlled by a third cylinder to move towards the fixture in the horizontal direction. Multiple probes are provided on the push block. The number of probes is the same as the number of grooves, and each probe is aligned with a groove. A probe pressure plate is provided on the top of the probe.

[0014] A further improvement of the technical solution of the present invention is that: the third cylinder controls the push block to move toward the fixture, the push block drives the probe to move in the horizontal direction, and the end of the probe extends to the exposed part of the steel nail in the groove for detection; when steel nails are detected in all grooves, the second cylinder controls the slide to move, and moves the fixture together with the steel nails to directly below the chuck assembly.

[0015] A further improvement of the technical solution of the present invention is that: the chuck assembly includes a fourth cylinder, which controls the support plate to rise and fall vertically; a chuck fixing plate is arranged parallel to the bottom of the support plate; multiple T-punches are arranged through the chuck fixing plate; a spring is sleeved on the upper end of each T-punch rod, one end of the spring abuts against the upper surface of the chuck fixing plate, and the other end of the spring abuts against the lower surface of the head of the T-punch; a chuck is arranged at the bottom of the chuck fixing plate at the lower end of each T-punch; multiple gripper pieces are arranged circumferentially at the lower end of the chuck, and the gripper pieces are used to grip the nail head of the steel nail; fixing seats are arranged on both sides of the chuck fixing plate, and the fixing seats fix the chuck fixing plate in place.

[0016] A further improvement to the technical solution of this invention is as follows: the fourth cylinder drives the support plate to descend, the support plate moves the clamping head down to the position of the steel nail, and after the clamping jaws contact the steel nail head, they open and clamp the steel nail head under the pressure of the T-punch. Then, the fourth cylinder drives the support plate to rise, and the clamping head carries the steel nail up together. During the rising process, the spring assists the T-punch to reset. By adopting the above technical solution, the present invention has the following beneficial effects: 1. This invention provides a posture correction feeding device for automatic feeding of steel nails. The device constructs a limiting channel by creating a clamping groove at the bottom of the main discharge track and setting a limiting plate at the initial position of the main discharge track. When a steel nail enters the main discharge track from the vibrating plate, the nail shaft falls into the clamping groove under vibration, automatically turning the nail into a vertical position with the nail head facing upwards and the nail shaft downwards. Simultaneously, the limiting channel only allows steel nails with horizontally passing nail heads to proceed. Steel nails that do not enter the clamping groove are blocked by the limiting plate and repeatedly attempt to enter under vibration until the nail shaft enters the clamping groove. This structural combination completely solves the problem of ineffective correction of inverted steel nail posture in existing technologies, achieving automatic conversion of steel nails from a horizontal to a vertical posture without the need for any photoelectric detection or pneumatic rejection devices. The structure is simple and reliable, with a high posture correction success rate.

[0017] 2. This invention provides a posture correction feeding device for automatic feeding of steel nails. This device connects multiple branch feeding tracks on a main feeding track and includes a knife fixing block, a knife, an insert, and a limiting groove on the top of the gantry frame. Combined with pipe joints and adapter pipes, it achieves single feeding and vertical guiding of multiple steel nails. After the steel nails are neatly arranged in the limiting grooves along the branch feeding tracks, the knife moves one nail at a time under the push of a first cylinder, pushing the foremost nail in each row of limiting grooves into the pipe joint. The nail then falls vertically through the adapter pipe into the fixture groove of the slide assembly. This structure solves the problem of existing technologies being unable to achieve single feeding of multiple nails, avoids nail accumulation and blockage at branch points, and achieves stability and synchronization of parallel feeding at multiple stations.

[0018] 3. This invention provides a posture correction feeding device for automatic feeding of steel nails. This device uses the cooperation of a probe and a pusher block in the slide assembly to horizontally detect steel nails falling into the fixture grooves. After confirming that all grooves contain steel nails, the slide moves the steel nails to below the chuck assembly. The chuck assembly, driven by a fourth cylinder, raises and lowers the support plate, causing the chuck to move downwards. The gripper plates open and grip the nail head under the pressure of a T-punch, then rise to carry the steel nail for subsequent processing. This structural combination ensures that the steel nails maintain a vertical posture throughout the feeding and gripping process, with accurate gripping positions, avoiding interruptions to subsequent processes due to missing or misaligned steel nails, and improving the overall reliability of the machine. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a posture correction feeding device for automatic feeding of steel nails. Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle; Figure 3 for Figure 1 Schematic diagram of a blockless structure; Figure 4 for Figure 3 Enlarged schematic diagram of part B in the middle; Figure 5 for Figure 1 A schematic diagram of the overall structure from another angle; Figure 6 for Figure 5 An enlarged schematic diagram of section C; Figure 7 for Figure 1 A schematic diagram of the overall structure from another angle; Figure 8 for Figure 7 An enlarged schematic diagram of part D in the middle.

[0021] Reference numerals: 1. Base; 2. Gantry frame; 3. Steel nail; 4. Vibration assembly; 401. Vibratory plate; 402. Limiting plate; 403. Limiting channel; 404. Main discharge track; 405. Sub-discharge track; 406. Gripping groove; 407. Insert knife fixing block; 408. Insert knife; 409. Sub-distribution groove; 410. Insert block; 411. Limiting groove; 412. Pipe joint; 413. Adapter pipe; 5. Slide assembly; 51. Slide; 52. Fixture; 53. Push block; 54. Groove; 55. Probe; 56. Second cylinder; 57. Third cylinder; 6. Chuck assembly; 61. Fourth cylinder; 62. Support plate; 63. Chuck fixing plate; 64. Chuck; 65. Gripper piece; 66. T-punch; 67. Spring; 68. Fixing seat. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] The present invention will be further explained below with reference to specific embodiments.

[0026] like Figures 1-8 As shown in the figure, this embodiment provides a posture correction feeding device for automatic feeding of steel nails, including a base 1, a gantry frame 2 mounted on the base 1, a vibration component 4 mounted on the top of the gantry frame 2, a slide assembly 5 mounted on the base 1 and located below the crossbeam of the gantry frame 2, and a clamp assembly 6 mounted on one side of the slide assembly 5. The vibration component 4 is used to organize the bulk steel nails 3 into a vertical posture with the nail head on top and the nail shaft below, and outputs them one by one. The vibration component 4 is the feeding source of the entire device, used to obtain steel nails 3 with uniform posture in subsequent processes. The slide assembly 5 is used to receive the steel nails 3 from the vibration component 4 and transfer the steel nails 3 to the picking position. The slide assembly 5 plays a connecting role, smoothly transporting the posture-corrected steel nails 3 to the clamping position. The clamp assembly 6 is used to grab the steel nails 3 at the picking position and clamp them for subsequent processes. The clamp assembly 6 is responsible for the final precise positioning and clamping, ensuring that the steel nails 3 are delivered to the next process in the correct posture.

[0027] like Figures 1-4As shown, in this embodiment, the vibration assembly 4 includes a vibratory plate 401. The conveying end of the vibratory plate 401 is connected to the main discharge track 404. The vibratory plate 401 causes the bulk steel nails 3 to climb upwards and forward along the spiral track through high-frequency vibration. The steel nails 3 are arranged in a flat position within the vibratory plate 401. A limiting plate 402 is set at the initial position of the main discharge track 404. A limiting channel 403 is constructed between the limiting plate 402 and the main discharge track 404. The height of the limiting channel 403 is only sufficient for the nail heads of the steel nails 3 to pass through in a horizontal posture. The function of the limiting plate 402 is to perform an initial screening of the steel nails 3. Only steel nails 3 with horizontally oriented nail heads can pass smoothly through the limiting channel 403. Steel nails 3 with downward-facing nail heads or incorrect posture are blocked by the limiting plate 402 and cannot continue to move forward. A clamping groove 406 is formed at the bottom of the main discharge track 404, extending along its length. The width of the clamping groove 406 is smaller than the diameter of the nail head 3 but larger than the diameter of the nail shank 3. The clamping groove 406 utilizes the diameter difference between the nail head and the nail shank to achieve the attitude change of the nail 3. Under vibration, the nail shank 3 falls into the clamping groove 406, and the nail 3 automatically changes from a horizontal state to a vertical state, with the nail head on top and the nail shank on the bottom. This purely mechanical structure can complete the attitude correction without any sensors or pneumatic components. Multiple branch discharge tracks 405 are connected to the main discharge track 404. The angle between the branch discharge track 405 and the main discharge track 404 is not less than 120°. The larger angle facilitates the smooth transfer of the nail 3 from the main discharge track 404 to the branch discharge track 405, reducing the risk of jamming at turns. The bottom of the discharging track 405 also has a clamping groove 406 to ensure that the steel nail 3 continues to be conveyed in a vertical position within the discharging track 405. The main discharging track 404 is a straight track, while the discharging track 405 is an arc track. The straight track facilitates the rapid passage of the steel nail 3, while the arc track adapts to the spatial layout requirements of multiple branching paths. The clamping groove 406 is a rectangular groove that runs through the length of the track. The width of the clamping groove 406 is 0.5-1mm larger than the diameter of the steel nail 3 rod. This gap ensures that the steel nail 3 rod can slide freely within the clamping groove 406 without causing the steel nail 3 to tilt due to excessive gap.

[0028] like Figures 2-6As shown, in this embodiment, a knife fixing block 407 is provided on the top of the gantry 2, providing a stable mounting base for the knife 408 and the insert 410. A knife 408 controlled by a first cylinder is mounted on the knife fixing block 407. A material distribution groove 409 is formed on the knife 408, the size of which is adapted to a single steel nail 3. The material distribution groove 409 can only hold one steel nail 3 at a time, ensuring that one steel nail 3 is output each time the material is distributed. An insert 410 is provided on the top of the knife fixing block 407. Multiple limiting grooves 411 are formed on the insert 410 and the knife fixing block 407 together. Each limiting groove 411 receives the end of a material distribution track 405. The limiting grooves 411 arrange and limit the steel nails 3 coming from the material distribution track 405, so that the steel nails 3 are arranged sequentially within the limiting grooves 411 waiting for distribution. At the end of each limiting groove 411, a pipe joint 412 is opened at a horizontal distance of one body length from the steel nail 3. The pipe joint 412 is set vertically downward, and the lower end of the pipe joint 412 is connected to the adapter pipe 413. The adapter pipe 413 extends vertically downward to the slide assembly 5. The pipe joint 412 and the adapter pipe 413 form a vertical conveying channel for the steel nail 3 from the material distribution position to the slide assembly 5. The steel nail 3 falls freely in the adapter pipe 413 by gravity without the need for additional power.

[0029] like Figures 2-6As shown, in this embodiment, the steel nail 3 is conveyed in a flat state within the spiral track of the vibratory feeder 401. When the steel nail 3 is conveyed to the clamping groove 406 at the end of the vibratory feeder 401, the nail rod falls into the clamping groove 406 under the action of vibration, causing the steel nail 3 to become vertical and continue to be conveyed with the nail head on top. This process utilizes the gravity characteristics of the steel nail 3 itself and the continuous vibration of the vibratory feeder 401 to achieve a natural change in posture. When the steel nail 3 passes through the limiting channel 403 below the limiting plate 402 along the main discharge track 404, the steel nail 3 that has not entered the clamping groove 406 is blocked by the limiting plate 402 and tries again under the action of vibration until the nail rod enters the clamping groove 406. The limiting plate 402 and the clamping groove 406 cooperate to form a double guarantee, ensuring that only the steel nail 3 with the correct posture can enter the subsequent track. The steel nails 3 are conveyed along the main discharge track 404 to each branch discharge track 405, and then enter the limiting grooves 411 jointly opened on the insert block 410 and the inserter fixing block 407. The steel nails 3 are neatly arranged in the limiting grooves 411, and the width of the limiting grooves 411 matches the nail heads of the steel nails 3. The steel nails 3 can only move in a straight line in the grooves and will not rotate or tilt. The steel nail 3 located at the front is squeezed into the distribution groove 409 of the inserter 408. The first cylinder pushes the inserter 408 to move the position of one steel nail 3, pushing the individual steel nail 3 in each row of limiting grooves 411 into the pipe joint 412. The steel nail 3 slides vertically downward into the transfer pipe 413. The reciprocating motion of the inserter 408 realizes the synchronous single distribution of multiple steel nails 3. Each action can push one steel nail 3 in each row of limiting grooves 411 into the corresponding pipe joint 412 at the same time, which has high distribution efficiency and reliable operation. The adapter pipe 413 is a vertically arranged straight pipe. The upper end of the adapter pipe 413 is sealed to the pipe joint 412. The inner diameter of the adapter pipe 413 is larger than the diameter of the nail head of the steel nail 3. The difference between the inner diameter of the adapter pipe 413 and the diameter of the nail head of the steel nail 3 is 1-2mm. This gap ensures that the steel nail 3 falls smoothly in the adapter pipe 413, while the pipe wall forms a slight constraint on the steel nail 3 to prevent the steel nail 3 from flipping or tilting during the fall, so that the steel nail 3 always falls vertically with the nail head on top.

[0030] like Figures 2-6As shown, in this embodiment, the slide assembly 5 includes a slide 51, which is controlled by a second cylinder 56 to reciprocate horizontally. The second cylinder 56 drives the slide 51 to slide on the base 1, realizing the transfer of the fixture 52 from the receiving position to the picking position. The fixture 52 is provided on the slide 51, and multiple grooves 54 are formed on the fixture 52. The number of grooves 54 is the same as the number of adapter pipes 413, and each groove 54 is located directly below an adapter pipe 413. The grooves 54 are used to receive the steel nails 3 falling from the adapter pipes 413. The depth of the grooves 54 is such that after the steel nail shank is inserted, the nail head is still exposed above the upper edge of the groove 54, which facilitates the subsequent clamping assembly 6 to clamp the nail head. A push block 53 is provided on one side of the fixture 52. The push block 53 is controlled by a third cylinder 57 to move horizontally toward the fixture 52. Multiple probes 55 are provided on the push block 53. The number of probes 55 is the same as the number of grooves 54, and each probe 55 is aligned with a groove 54. A probe pressure plate is provided on the top of the probe 55 to fix the position of the probe 55 and prevent the probe 55 from shifting during operation. The third cylinder 57 controls the push block 53 to move toward the fixture 52. The push block 53 drives the probes 55 to move horizontally. The end of the probe 55 extends into the exposed part of the steel nail 3 in the groove 54 for detection. The probe 55 determines whether there is a steel nail 3 in the groove 54 by contacting the steel nail 3. This mechanical detection method has a simple structure and direct response. Once all the steel nails 3 are detected in all the grooves 54, the second cylinder 56 controls the slide table 51 to move, moving the fixture 52 along with the steel nails 3 to directly below the chuck assembly 6. The slide table 51 will only perform the transfer action after confirming that all the workstations have steel nails 3 in place, thus avoiding clamping failures caused by missing nails at individual workstations and improving the overall reliability of the machine.

[0031] like Figures 7-8As shown, in this embodiment, the chuck assembly 6 includes a fourth cylinder 61. The fourth cylinder 61 controls the support plate 62 to rise and fall vertically. The fourth cylinder 61 provides power for the rise and fall of the chuck 64, realizing the action of the chuck 64 approaching the steel nail 3 and carrying the steel nail 3 upward. A chuck fixing plate 63 is arranged parallel to the lower part of the support plate 62. Multiple T-punches 66 are arranged through the chuck fixing plate 63. A spring 67 is sleeved on the upper end of each T-punch 66. One end of the spring 67 abuts against the upper surface of the chuck fixing plate 63, and the other end of the spring 67 abuts against the lower surface of the head of the T-punch 66. The spring 67 provides an upward restoring force to the T-punch 66, so that the T-punch 66 remains in the initial position when no external force is applied. Each T-punch 66 has a chuck 64 located at the bottom of the chuck fixing plate 63. Multiple gripper pieces 65 are circumferentially arranged at the lower end of the chuck 64. These gripper pieces 65 are used to grip the nail head of the steel nail 3. Under the pressure of the T-punch 66, the gripper pieces 65 open outwards and clamp the nail head, achieving reliable clamping of the steel nail 3. Fixing seats 68 are provided on both sides of the chuck fixing plate 63, fixing the chuck fixing plate 63 in place. The fixing seats 68 ensure that the chuck fixing plate 63 remains stationary throughout the operation, providing a stable guiding reference for the up-and-down movement of the T-punch 66. The fourth cylinder 61 drives the support plate 62 to descend. The support plate 62 moves the chuck 64 down to the position of the steel nail 3. After contacting the nail head of the steel nail 3, the gripper pieces 65 open and clamp the nail head under the pressure of the T-punch 66. After the gripper pieces 65 clamp the nail head, the steel nail 3 is firmly fixed and will not fall off during the upward movement. Subsequently, the fourth cylinder 61 drives the pallet 62 to rise, and the chuck 64 carries the steel nail 3 to rise together. During the rising process, the spring 67 assists the T-punch 66 to reset. The resetting action of the spring 67 causes the T-punch 66 and the chuck 64 to automatically return to the initial height after the clamping is completed, preparing for the next clamping action.

[0032] The present invention also provides a working principle of an attitude correction feeding device for automatic feeding of steel nails: After bulk steel nails 3 are poured into the vibratory feeder 401, they are conveyed forward in a horizontal position within the spiral track of the vibratory feeder 401. When the steel nails 3 reach the main discharge track 404 at the end of the vibratory feeder 401, the nail shaft falls into the clamping groove 406 at the bottom of the main discharge track 404 under the action of vibration. The steel nails 3 automatically change from a horizontal position to a vertical position and continue to move forward with the nail head on top and the nail shaft on the bottom. When the steel nails 3 pass the limiting plate 402 at the initial position of the main discharge track 404, the limiting channel 403 constructed between the limiting plate 402 and the main discharge track 404 filters the steel nails 3. Steel nails 3 that do not enter the clamping groove 406 are blocked by the limiting plate 402 and repeatedly try under the action of vibration until the nail shaft enters the clamping groove 406. The steel nails 3 with the correct posture continue to be conveyed along the main discharge track 404 to each branch discharge track 405. The angle between the 5 and the main discharge track 404 is not less than 120°. The bottom of the distribution track 405 is also provided with a clamping groove 406 to ensure that the steel nail 3 remains vertical. The steel nail 3 enters the limiting groove 411 jointly provided on the insert 410 and the insert knife fixing block 407 along the distribution track 405 and is arranged neatly in the limiting groove 411. The steel nail 3 at the front is squeezed into the distribution groove 409 provided on the insert knife 408. The first cylinder pushes the insert knife 408 to move the position of one steel nail 3, pushing the individual steel nail 3 in each row of limiting grooves 411 into the pipe joint 412. The steel nail 3 slides vertically downward into the transfer pipe 413. The inner diameter of the transfer pipe 413 is larger than the diameter of the nail head of the steel nail 3 by 1-2 mm. The steel nail 3 remains vertically downward in the transfer pipe 413 with the nail head on top and falls into the groove 54 provided on the fixture 52 in the slide assembly 5.

[0033] A fixture 52 is mounted on a slide 51, which is controlled by a second cylinder 56 to reciprocate horizontally. A push block 53 is mounted on one side of the fixture 52, and the push block 53 is controlled by a third cylinder 57 to move horizontally toward the fixture 52. Multiple probes 55 are mounted on the push block 53, the number of which matches the number of grooves 54, with each probe 55 aligned with a specific groove 54. The third cylinder 57 controls the push block 53 to move toward the fixture 52, causing the probes 55 to move horizontally. The tips of the probes 55 extend into the exposed portions of the steel nails 3 within the grooves 54 for detection. Once steel nails 3 are detected in all grooves 54, the second cylinder 56 controls the slide 51 to move, transferring the fixture 52 along with the steel nails 3 directly below the chuck assembly 6. The chuck assembly 6 includes a fourth cylinder 61. The fourth cylinder 61 controls the pallet 62 to rise and fall vertically. A clamp fixing plate 63 is arranged parallel to the bottom of the pallet 62. Multiple T-punches 66 are arranged through the clamp fixing plate 63. A spring 67 is sleeved on the upper end of each T-punch 66. A clamp 64 is set at the bottom of the clamp fixing plate 63 at the lower end of each T-punch 66. Multiple gripper pieces 65 are arranged circumferentially at the lower end of the clamp 64. The fourth cylinder 61 drives the pallet 62 to fall. The pallet 62 drives the clamp 64 to move down to the position of the steel nail 3. After the gripper pieces 65 contact the nail head of the steel nail 3, they open and hold the nail head of the steel nail 3 under the pressure of the T-punch 66. Then the fourth cylinder 61 drives the pallet 62 to rise. The clamp 64 carries the steel nail 3 and rises together. The spring 67 assists the T-punch 66 to reset during the rise, completing the feeding and gripping of the steel nail 3, waiting for the subsequent process to pick it up.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A posture correction feeding device for automatic feeding of steel nails, characterized in that: The system includes a base (1), a gantry frame (2) on the base (1), a vibration assembly (4) on the top of the gantry frame (2), a slide assembly (5) on the base (1) and below the crossbeam of the gantry frame (2), and a clamp assembly (6) on one side of the slide assembly (5). The vibration assembly (4) is used to organize the bulk steel nails (3) into a vertical position with the nail head on top and the nail shaft on the bottom and output them one by one. The slide assembly (5) is used to receive the steel nails (3) from the vibration assembly (4) and transfer the steel nails (3) to the picking position. The clamp assembly (6) is used to grab the steel nails (3) at the picking position and clamp them for subsequent processes.

2. The posture correction feeding device for automatic feeding of steel nails according to claim 1, characterized in that: The vibration assembly (4) includes a vibratory plate (401), the conveying end of the vibratory plate (401) is connected to the main discharge track (404), a limiting plate (402) is set at the initial position of the main discharge track (404), a limiting channel (403) is constructed between the limiting plate (402) and the main discharge track (404), the height of the limiting channel (403) is only enough for the nail head of the steel nail (3) to pass through in a horizontal posture; a clamping groove (406) is opened at the bottom of the main discharge track (404), the clamping groove (406) extends along the length direction of the main discharge track (404), the width of the clamping groove (406) is less than the diameter of the nail head of the steel nail (3) and greater than the diameter of the nail rod of the steel nail (3).

3. The posture correction feeding device for automatic feeding of steel nails according to claim 2, characterized in that: The main discharge track (404) is connected to multiple branch discharge tracks (405). The angle between the branch discharge track (405) and the main discharge track (404) is not less than 120°. The bottom of the branch discharge track (405) is also provided with a clamping groove (406). The main discharge track (404) is a straight track, and the branch discharge track (405) is an arc track. The clamping groove (406) is a rectangular groove that runs through the length of the track. The width of the clamping groove (406) is 0.5-1mm larger than the diameter of the steel nail (3) rod.

4. The posture correction feeding device for automatic feeding of steel nails (3) according to claim 3, characterized in that: A knife fixing block (407) is provided on the top of the gantry frame (2). A knife (408) controlled by the first cylinder is provided on the knife fixing block (407). A material distribution groove (409) is opened on the knife (408). The size of the material distribution groove (409) is adapted to a single steel nail (3). An insert (410) is provided on the top of the knife fixing block (407). Multiple limiting grooves (411) are opened on the insert (410) and the knife fixing block (407). Each limiting groove (411) receives the end of a material distribution track (405). A pipe joint (412) is opened at the end of each limiting groove (411) at a horizontal distance of one body length from the steel nail (3). The pipe joint (412) is set vertically downward. The lower end of the pipe joint (412) is connected to the adapter pipe (413). The adapter pipe (413) extends vertically downward to the slide assembly (5).

5. The posture correction feeding device for automatic feeding of steel nails according to claim 4, characterized in that: The steel nail (3) is conveyed in a flat state within the spiral track of the vibratory feeder (401). When the steel nail (3) is conveyed to the clamping groove (406) at the end of the vibratory feeder (401), the nail rod falls into the clamping groove (406) under the action of vibration, making the steel nail (3) vertical and continuing to be conveyed with the nail head on top. When the steel nail (3) passes through the limiting channel (403) below the limiting plate (402) along the main discharge track (404), the steel nail (3) that has not entered the clamping groove (406) is blocked by the limiting plate (402) and tries again under the action of vibration until the nail rod enters the clamping groove (406). The steel nail (3) is conveyed along the main discharge track (404). The track (404) transports the material to each discharge track (405), and then the material enters the limiting groove (411) jointly opened on the insert (410) and the inserter fixing block (407). The steel nails (3) are neatly arranged in the limiting groove (411). The steel nail (3) at the front is squeezed into the material distribution groove (409) of the inserter (408). The first cylinder pushes the inserter (408) to move the position of one steel nail (3), pushing the individual steel nails (3) in each row of limiting grooves (411) into the pipe joint (412). The steel nails (3) slide vertically downward into the transfer pipe (413).

6. The posture correction feeding device for automatic feeding of steel nails according to claim 4, characterized in that: The adapter pipe (413) is a vertically arranged straight pipe. The upper end of the adapter pipe (413) is sealed to the pipe joint (412). The inner diameter of the adapter pipe (413) is larger than the diameter of the nail head of the steel nail (3). The difference between the inner diameter of the adapter pipe (413) and the diameter of the nail head of the steel nail (3) is 1-2mm, so that the steel nail (3) remains vertically falling with the nail head on top.

7. The posture correction feeding device for automatic feeding of steel nails according to claim 4, characterized in that: The slide assembly (5) includes a slide (51), which is controlled by a second cylinder (56) to reciprocate in the horizontal direction. A fixture (52) is provided on the slide (51), and multiple grooves (54) are provided on the fixture (52). The number of grooves (54) is the same as the number of adapter pipes (413), and each groove (54) is located directly below an adapter pipe (413). A push block (53) is provided on one side of the fixture (52), and the push block (53) is controlled by a third cylinder (57) to move in the horizontal direction toward the fixture (52). Multiple probes (55) are provided on the push block (53), and the number of probes (55) is the same as the number of grooves (54). Each probe (55) is aligned with a groove (54), and a probe pressure plate is provided on the top of the probe (55).

8. The posture correction feeding device for automatic feeding of steel nails according to claim 7, characterized in that: The third cylinder (57) controls the push block (53) to move toward the fixture (52). The push block (53) drives the probe (55) to move horizontally. The end of the probe (55) extends into the groove (54) to detect the exposed part of the steel nail (3). When all the grooves (54) have detected the steel nail (3), the second cylinder (56) controls the slide (51) to move, and moves the fixture (52) together with the steel nail (3) to the bottom of the chuck assembly (6).

9. The posture correction feeding device for automatic feeding of steel nails according to claim 1, characterized in that: The chuck assembly (6) includes a fourth cylinder (61), which controls the support plate (62) to rise and fall vertically. A chuck fixing plate (63) is arranged parallel to the bottom of the support plate (62). Multiple T-punches (66) are arranged through the chuck fixing plate (63). A spring (67) is sleeved on the upper end of each T-punch (66). One end of the spring (67) abuts against the upper surface of the chuck fixing plate (63), and the other end of the spring (67) abuts against the lower surface of the head of the T-punch (66). A chuck (64) is arranged at the bottom of the chuck fixing plate (63) at the lower end of each T-punch (66). Multiple jaw pieces (65) are arranged circumferentially at the lower end of the chuck (64). The jaw pieces (65) are used to clamp the nail head of the steel nail (3). Fixing seats (68) are arranged on both sides of the chuck fixing plate (63). The fixing seats (68) fix the chuck fixing plate (63).

10. The posture correction feeding device for automatic feeding of steel nails according to claim 9, characterized in that: The fourth cylinder (61) drives the support plate (62) to descend, and the support plate (62) drives the chuck (64) to move down to the position of the steel nail (3). After the jaws (65) contact the nail head of the steel nail (3), they open and hold the nail head of the steel nail (3) under the pressure of the T-punch (66). Then the fourth cylinder (61) drives the support plate (62) to rise, and the chuck (64) carries the steel nail (3) to rise together. The spring (67) assists the T-punch (66) to reset during the rising process.

Images