A feeding device for self-tapping screw machining

Abstract

The present application relates to the technical field of self-tapping screw production, in particular to a feeding device for self-tapping screw machining, comprising: a feeding frame, comprising an inclined feeding frame and a horizontal feeding frame, and first protective plates and second protective plates are respectively arranged on the inclined feeding frame and the horizontal feeding frame; a conveying assembly is arranged between the two groups of second protective plates; an adjusting assembly is used for controlling the distance between the two groups of first protective plates and the two groups of second protective plates; a cleaning assembly is arranged at the position corresponding to the conveying belt of the second protective plate; the beneficial effects are that: through the cooperation of the automatic telescopic air cylinder, the distance between the two groups of fixing frames is adjusted, the self-tapping screw with different diameters of screw rods is adapted, when the third motor drives the cleaning belt to rotate from top to bottom through the second transmission roller, the surface of the self-tapping screw rod can be cleaned, the oil stains and debris cleaned are scraped off by the scraper and fall into the surface of the second filter screen, and the oil stains and debris are separated after being filtered through the second filter screen.

Description

Technical Field

[0001] This invention relates to the field of self-tapping screw manufacturing technology, specifically to a feeding device for processing self-tapping screws. Background Technology

[0002] Self-tapping screws, also known as quick-thread screws, are quick-installing fasteners made of steel with a passivated zinc-plated surface.

[0003] Self-tapping screws require high hardness to ensure they can penetrate the material on their own, so they are usually heat-treated. In the prior art, Chinese utility model patent CN212126838U discloses a feeding device for processing large flat-head self-tapping screws. The feeding box has a feeding port at the top and a support frame symmetrically fixed to the bottom. A conveyor belt is fixedly installed on one side of the support frame at the bottom of the feeding box. A high-temperature heating device is located on the side of the feeding box near the conveyor belt, and the conveyor belt passes through the high-temperature heating device and is rotatably connected. This feeding device for processing large flat-head self-tapping screws, with the cooperation of a centrifugal drum and a rotating mechanism, achieves initial separation of semi-finished screws. With the cooperation of a discharge mechanism and a lifting mechanism, it achieves secondary separation of semi-finished screws. Simultaneously, with the cooperation of a fixed plate and a triangular slider, it achieves screening of semi-finished screws of different specifications. Compared with existing conveying devices, it is more convenient to separate and evenly spread large flat-head self-tapping screws, allowing them to be fully heated.

[0004] However, self-tapping screws come into contact with some lubricating oil and cutting fluid during the production process, which causes oil stains, iron filings and other impurities to adhere to the surface of the self-tapping screws after production. Self-tapping screws with oil stains and debris adhering to them are prone to slippage, jamming or contamination of subsequent workstations during the conveying process. Summary of the Invention

[0005] The purpose of this invention is to provide a feeding device for processing self-tapping screws, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A feeding device for processing self-tapping screws includes:

[0008] The feeding rack includes an inclined feeding rack and a horizontal feeding rack. The horizontal feeding rack is connected to the lower end of the inclined feeding rack, and two sets of symmetrically distributed first protective plates and second protective plates are slidably arranged on the inclined feeding rack and the horizontal feeding rack, respectively.

[0009] A conveying assembly is disposed between two sets of the second protective plates, the conveying assembly comprising two sets of symmetrically distributed conveyor belts;

[0010] An adjustment assembly is used to control the distance between two sets of first protective plates and two sets of second protective plates. The adjustment assembly includes a double-ended lead screw rotatably mounted on the horizontal feeder. A guide block is screwed onto the double-ended lead screw, and the guide block is connected to the second protective plate.

[0011] A cleaning assembly is disposed on the second protective plate at a position corresponding to the conveyor belt, the cleaning assembly including a rotatably disposed cleaning belt.

[0012] Furthermore, the upper ends of the first protective plate and the inclined feeding frame are adapted to each other, and the bottom end of the first protective plate is connected to one end of the second protective plate;

[0013] The upper surface of the horizontal feeding rack is provided with two sets of symmetrically distributed guide grooves. Each guide groove is rotatably equipped with a double-ended screw, and each double-ended screw is screwed with two sets of symmetrically distributed guide blocks. The upper end of each guide block is connected to the lower end of the corresponding second protective plate.

[0014] A first motor is installed on the side wall of the horizontal feeding frame at the end positions of the two sets of double-ended lead screws. The output end of the first motor passes through the side wall of the horizontal feeding frame and is connected to the end of the corresponding double-ended lead screw.

[0015] Furthermore, the conveying assembly also includes first drive rollers installed on the sidewalls of the two sets of second protective plates that are close to each other. There are two sets of first drive rollers, and the two sets of first drive rollers are respectively installed at both ends of the second protective plates. The conveyor belt is sleeved between the two sets of first drive rollers on the same side.

[0016] A second motor is installed on the sidewall of each of the two sets of second protective plates at a position corresponding to the first transmission roller. The output end of the second motor passes through the sidewall of the second protective plate and is connected to the corresponding first transmission roller.

[0017] Furthermore, the two sets of second protective plates are provided with extension plates at the connection between the horizontal feeding frame and the conveyor belt. The side walls of the two sets of extension plates that are close to each other are provided with storage slots, and each storage slot is provided with a transition plate inserted inside.

[0018] Multiple sets of spaced second return springs are provided between the ends of each transition plate and the inner wall of the corresponding storage groove. The two sets of transition plates are in elastic contact through the cooperation of the multiple sets of second return springs.

[0019] Furthermore, a clearance groove is provided at the upper end of the inclined feeding frame near the horizontal feeding frame, and an elastic buffer pad is provided inside the clearance groove;

[0020] The inner sidewall of the clearance groove is provided with a limiting groove corresponding to the position of the elastic buffer pad, and a limiting block is slidably arranged inside the limiting groove. The limiting block is connected to the extension plate.

[0021] A first reset spring is provided between the lower end of the limiting block and the inner bottom of the limiting groove.

[0022] Furthermore, a wedge-shaped block is provided at the lower end of the extension plate, and the cross-section of the wedge-shaped block is triangular.

[0023] The elastic buffer pad has a rotating shaft rotatably arranged inside corresponding to the position of the wedge block, and the outer surface of the rotating shaft is provided with multiple sets of circumferentially distributed paddles.

[0024] The inner wall of the elastic buffer pad is provided with a driving device at the position corresponding to the rotating shaft, which drives the rotating shaft to rotate.

[0025] Furthermore, the horizontal feeding rack has a groove on one side corresponding to the extension plate, and a filter plate is provided at the upper end of the groove;

[0026] A first collection box is provided inside the groove corresponding to the lower part of the filter plate.

[0027] Furthermore, the cleaning assembly also includes an automatic telescopic cylinder mounted on one side wall of the two sets of second protective plates that are close to each other, the automatic telescopic cylinder being located inside the conveyor belt;

[0028] The output end of the automatic telescopic cylinder is connected to a fixed frame. The upper and lower ends of the inner sidewall of the automatic telescopic cylinder are rotatably equipped with second transmission rollers, and a cleaning belt is sleeved between the two sets of second transmission rollers.

[0029] A third motor is installed on the side wall of the fixed frame at a position corresponding to one of the sets of second drive rollers, and the cleaning belt rotates through the cooperation of the third motor and the second drive rollers.

[0030] Furthermore, a second collection box is provided at the upper end of the horizontal feeding rack corresponding to the positions of the two sets of cleaning belts, and a second filter screen is provided inside the second collection box.

[0031] Furthermore, the upper end of the second filter screen is provided with a mounting bracket, and two sets of symmetrically distributed scrapers are installed on the upper end of the mounting bracket at positions corresponding to the two sets of cleaning belts.

[0032] Furthermore, a first limiting plate is provided at the inner wall position of each of the two sets of first protective plates near the second protective plate, and a second limiting plate is provided at the end position corresponding to the first limiting plate on the inner wall of each of the two sets of second protective plates, and the first limiting plate is connected to the second limiting plate.

[0033] Elastic baffles are provided on the sidewalls of the two sets of second limiting plates that are close to each other.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] 1. This invention uses an automatic telescopic cylinder to adjust the distance between two sets of fixed frames to accommodate self-tapping screws of different diameters. When the third motor drives the cleaning belt to rotate from top to bottom through the second transmission roller, the surface of the self-tapping screw can be cleaned. The oil and debris that are cleaned off are scraped off by the scraper and fall into the surface of the second filter screen. After being filtered by the second filter screen, the oil and debris are separated.

[0036] 2. By cooperating with the first motor, the double-headed lead screw, and the guide block, the spacing between the two sets of conveyor belts is adjusted so that the two sets of conveyor belts can transport self-tapping screws of different sizes;

[0037] 3. The elastic buffer pad can buffer the self-tapping screws sliding down from the inclined feeder, preventing them from popping out due to inertia. At the same time, through the cooperation of the rotating shaft, the dial plate and the wedge block, the extension plate vibrates regularly, causing the self-tapping screws accumulated on the extension plate to vibrate regularly, shaking off the oil and debris adhering to the surface of the self-tapping screws.

[0038] 4. The filter plate can discharge the oil and debris shaken off by the extension plate. Attached Figure Description

[0039] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0040] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0041] Figure 3 for Figure 1 Enlarged schematic diagram of the structure at point B;

[0042] Figure 4 for Figure 1 Enlarged schematic diagram of the structure at point C;

[0043] Figure 5 This is a cross-sectional schematic diagram of the connection between the inclined feeding frame and the first limiting plate structure of the present invention;

[0044] Figure 6 for Figure 5Enlarged schematic diagram of the structure at point D;

[0045] Figure 7 This is a cross-sectional schematic diagram of the connection between the second protective plate and the extension plate structure of the present invention;

[0046] Figure 8 This is a schematic cross-sectional view of the horizontal feeding rack structure of the present invention;

[0047] Figure 9 for Figure 8 Enlarged schematic of the structure at point E in the middle.

[0048] In the diagram: 1. Feeding rack, 101. Inclined feeding rack, 102. Horizontal feeding rack, 2. First protective plate, 3. Second protective plate, 4. Guide groove, 5. Double-ended lead screw, 6. First motor, 7. Guide block, 8. Conveyor belt, 9. Second motor, 10. First transmission roller, 11. First limiting plate, 12. Second limiting plate, 13. Elastic baffle, 14. Transition plate, 15. Relief groove, 16. Elastic buffer pad, 17. Extension plate, 18. Wedge block, 19. Rotating shaft, 20. Paddle plate, 21. Limiting groove, 22. First return spring, 23. Limiting block, 25. Groove, 26. First collection box, 27. Filter plate, 28. Storage groove, 29. Second return spring, 30. Automatic telescopic cylinder, 31. Fixing frame, 32. Third motor, 33. Second transmission roller, 34. Cleaning belt, 35. Second collection box, 36. Second filter screen, 37. Mounting frame, 38. Scraper. Detailed Implementation

[0049] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples. Example 1:

[0050] Please see Figures 1 to 9 The present invention provides a technical solution: a feeding device for processing self-tapping screws, comprising:

[0051] The feeding rack 1 includes an inclined feeding rack 101 and a horizontal feeding rack 102. The horizontal feeding rack 102 is connected to the lower end of the inclined feeding rack 101, and two sets of symmetrically distributed first protective plates 2 and second protective plates 3 are slidably arranged on the inclined feeding rack 101 and the horizontal feeding rack 102, respectively.

[0052] A conveying assembly is disposed between two sets of the second protective plates 3, the conveying assembly comprising two sets of symmetrically distributed conveyor belts 8;

[0053] An adjustment assembly is used to control the distance between the two sets of first protective plates 2 and the two sets of second protective plates 3. The adjustment assembly includes a double-ended lead screw 5 rotatably mounted on the horizontal feeder 102. A guide block 7 is screwed onto the double-ended lead screw 5, and the guide block 7 is connected to the second protective plate 3.

[0054] A cleaning assembly is disposed on the second protective plate 3 at a position corresponding to the conveyor belt 8, and the cleaning assembly includes a rotatably disposed cleaning belt 34;

[0055] By tilting the feeder 101, the self-tapping screw slides between the two sets of conveyor belts 8 by inertia. The distance between the two sets of conveyor belts 8 can be reduced to less than the distance of the self-tapping screw head by adjusting the component. Then the self-tapping screw can be driven to be conveyed. During the conveying process, the thread of the self-tapping screw can be cleaned by the cleaning component to prevent oil and debris from falling onto the conveying component or entering the next process. Example 2:

[0056] like Figure 2 As shown, the feeding device for processing self-tapping screws disclosed in Embodiment 2 of the present invention has a structure that is basically the same as that in Embodiment 1, except that:

[0057] The first protective plate 2 is adapted to the upper end of the inclined feeding frame 101, and the bottom end of the first protective plate 2 is connected to one end of the second protective plate 3;

[0058] The upper surface of the horizontal feeding rack 102 is provided with two sets of symmetrically distributed guide grooves 4. Each guide groove 4 is rotatably provided with a double-headed screw 5. Each double-headed screw 5 is screwed with two sets of symmetrically distributed guide blocks 7. The upper end of each guide block 7 is connected to the lower end of the corresponding second protective plate 3.

[0059] The side wall of the horizontal feeding rack 102 is equipped with a first motor 6 at the end position of each of the two sets of double-headed lead screws 5. The output end of the first motor 6 passes through the side wall of the horizontal feeding rack 102 and is connected to the end of the corresponding double-headed lead screw 5.

[0060] Start the first motor 6, which drives the double-headed lead screw 5 to rotate, so that the two sets of guide blocks 7 move closer or further apart. Then, through the cooperation of the guide blocks 7, the first protective plate 2 and the second protective plate 3 move closer or further apart, and the two sets of conveyor belts 8 move closer or further apart, so as to convey various types of self-tapping screws. Example 3:

[0061] like Figure 3 As shown, the feeding device for processing self-tapping screws disclosed in Embodiment 3 of the present invention has a structure that is basically the same as that in Embodiment 2, except that:

[0062] The conveying assembly also includes first transmission rollers 10 installed on the side walls of two sets of second protective plates 3 that are close to each other. There are two sets of first transmission rollers 10, and the two sets of first transmission rollers 10 are respectively installed at both ends of the second protective plate 3. The conveyor belt 8 is sleeved between the two sets of first transmission rollers 10 on the same side.

[0063] The sidewalls of the two sets of second protective plates 3 are equipped with second motors 9 at positions corresponding to the first transmission rollers 10. The output end of the second motors 9 passes through the sidewalls of the second protective plates 3 and is connected to the corresponding first transmission rollers 10.

[0064] Start the second motor 9. The second motor 9, in cooperation with the first transmission roller 10, drives the conveyor belt 8 to rotate, thereby realizing the conveying of the self-tapping screws between the two sets of conveyor belts 8. Example 4:

[0065] like Figure 4 As shown, the feeding device for processing self-tapping screws disclosed in Embodiment 4 of the present invention has a structure that is basically the same as that in Embodiment 3, except that:

[0066] Each of the two sets of first protective plates 2 is provided with a first limiting plate 11 near the inner wall of the second protective plate 3, and the inner wall of the two sets of second protective plates 3 is provided with a second limiting plate 12 at the end position corresponding to the first limiting plate 11, and the first limiting plate 11 and the second limiting plate 12 are connected.

[0067] Elastic baffles 13 are provided on the side walls of the two sets of second limiting plates 12 that are close to each other;

[0068] The cooperation of two sets of first limiting plates 11 enables the self-tapping screw to be limited and guided, allowing it to move between the two sets of conveyor belts 8. The elastic baffle 13 can apply a slight lateral thrust to the self-tapping screw, correcting the offset and ensuring that the center of the screw head is aligned with the center of the conveyor belt. Example 5:

[0069] like Figure 4 and Figure 7 As shown, the feeding device for processing self-tapping screws disclosed in Embodiment 5 of the present invention has a structure that is basically the same as that in Embodiment 4, except that:

[0070] Two sets of second protective plates 3 are provided with extension plates 17 at the connection between the horizontal feeding frame 102 and the conveyor belt 8. The side walls of the two sets of extension plates 17 that are close to each other are provided with storage slots 28, and each storage slot 28 is provided with a transition plate 14 inserted inside.

[0071] Multiple sets of spaced second return springs 29 are provided between the end of each transition plate 14 and the inner wall of the corresponding storage groove 28. The two sets of transition plates 14 are in elastic contact through the cooperation of the multiple sets of second return springs 29.

[0072] By setting the transition plate 14, the self-tapping screw can move from the bottom of the inclined feeder 101 to the conveyor belt 8, and the elastic setting of the transition plate 14 can be matched with the spacing adjustment of the two sets of conveyor belts 8. Example 6:

[0073] like Figures 5-6 As shown, the feeding device for processing self-tapping screws disclosed in Embodiment Six of the present invention has a structure that is basically the same as that in Embodiment Five, except that:

[0074] The inclined feeding rack 101 is provided with a relief groove 15 at the upper end near the horizontal feeding rack 102, and an elastic buffer pad 16 is provided inside the relief groove 15.

[0075] The inner sidewall of the clearance groove 15 is provided with a limiting groove 21 at the position corresponding to the elastic buffer pad 16. A limiting block 23 is slidably arranged inside the limiting groove 21, and the limiting block 23 is connected to the extension plate 17.

[0076] A first reset spring 22 is provided between the lower end of the limiting block 23 and the inner bottom end of the limiting groove 21;

[0077] The lower end of the extension plate 17 is provided with a wedge block 18, and the cross-section of the wedge block 18 is triangular.

[0078] The elastic buffer pad 16 has a rotating shaft 19 rotatably arranged inside corresponding to the position of the wedge block 18, and the outer surface of the rotating shaft 19 is provided with multiple sets of circumferentially distributed paddle plates 20.

[0079] The inner wall of the elastic buffer pad 16 is provided with a driving device at a position corresponding to the rotating shaft 19, which drives the rotating shaft 19 to rotate.

[0080] The elastic buffer pad 16 can buffer the self-tapping screws sliding down from the inclined feeder 101, preventing them from popping out due to inertia. At the same time, through the cooperation of the rotating shaft 19, the dial plate 20, and the wedge block 18, the extension plate 17 is vibrated regularly, causing the self-tapping screws accumulated on the extension plate 17 to vibrate regularly, shaking off the oil and debris adhering to the surface of the self-tapping screws. Example 7:

[0081] like Figure 6 As shown, the feeding device for processing self-tapping screws disclosed in Embodiment 7 of the present invention has a structure that is basically the same as that in Embodiment 6, except that:

[0082] The horizontal feeding rack 102 has a groove 25 on one side corresponding to the extension plate 17, and a filter plate 27 is provided at the upper end of the groove 25.

[0083] A first collection box 26 is provided inside the groove 25 corresponding to the lower part of the filter plate 27;

[0084] The filter plate 27 is designed to discharge oil and debris shaken off by the extension plate 17. Example 8:

[0085] like Figures 8-9 As shown, the feeding device for processing self-tapping screws disclosed in Embodiment 8 of the present invention has a structure that is basically the same as that in Embodiment 7, except that:

[0086] The cleaning assembly also includes an automatic telescopic cylinder 30 installed on one side wall of the two sets of second protective plates 3 that are close to each other, and the automatic telescopic cylinder 30 is located inside the conveyor belt 8;

[0087] The output end of the automatic telescopic cylinder 30 is connected to a fixed frame 31. The upper and lower ends of the inner sidewall of the automatic telescopic cylinder 30 are rotatably equipped with second transmission rollers 33, and a cleaning belt 34 is sleeved between the two sets of second transmission rollers 33.

[0088] A third motor 32 is installed on the side wall of the fixed frame 31 at a position corresponding to one of the sets of second transmission rollers 33. The cleaning belt 34 rotates through the cooperation of the third motor 32 and the second transmission rollers 33.

[0089] A second collection box 35 is provided at the upper end of the horizontal feeding rack 102 corresponding to the positions of the two sets of cleaning belts 34, and a second filter screen 36 is provided inside the second collection box 35;

[0090] The upper end of the second filter screen 36 is provided with a mounting bracket 37, and two sets of symmetrically distributed scrapers 38 are installed on the upper end of the mounting bracket 37 at positions corresponding to the two sets of cleaning belts 34.

[0091] When the third motor 32 drives the cleaning belt 34 to rotate from top to bottom via the second transmission roller 33, it can clean the surface of the self-tapping screw. The oil and debris that are cleaned off are scraped off by the scraper 38 and fall into the surface of the second filter screen 36. After being filtered by the second filter screen 36, the oil and debris are separated.

[0092] Specifically, the self-tapping screw produced enters the horizontal feeder 102 through the inclined feeder 101. When the self-tapping screw slides from the high point of the inclined feeder 101 to the elastic buffer pad 16, the elastic buffer pad 16 can buffer the self-tapping screw sliding down from the inclined feeder 101 to prevent the self-tapping screw from popping out due to inertia. At the same time, through the cooperation of the rotating shaft 19, the dial plate 20 and the wedge block 18, the extension plate 17 is vibrated regularly, so that the self-tapping screws accumulated on the extension plate 17 vibrate regularly, shaking off the oil and debris adhering to the surface of the self-tapping screw.

[0093] When entering the horizontal feeding rack 102, the self-tapping screw is conveyed between the two sets of conveyor belts 8 through the cooperation of the first limiting plate 11, the second limiting plate 12 and the elastic baffle 13.

[0094] During conveying, the third motor 32 drives the cleaning belt 34 to rotate from top to bottom through the second transmission roller 33, which can clean the surface of the self-tapping screw. The oil and debris that are cleaned off are scraped off by the scraper 38 and fall into the surface of the second filter screen 36. After being filtered by the second filter screen 36, the oil and debris are separated.

[0095] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A feeding device for processing self-tapping screws, characterized in that, include: The feeding rack (1) includes an inclined feeding rack (101) and a horizontal feeding rack (102). The horizontal feeding rack (102) is connected to the lower end of the inclined feeding rack (101), and two sets of symmetrically distributed first protective plates (2) and second protective plates (3) are slidably arranged on the inclined feeding rack (101) and the horizontal feeding rack (102), respectively. A conveying assembly is disposed between two sets of the second protective plates (3), the conveying assembly comprising two sets of symmetrically distributed conveyor belts (8); An adjustment assembly is used to control the distance between the two sets of first protective plates (2) and the two sets of second protective plates (3). The adjustment assembly includes a double-ended screw (5) rotatably mounted on the horizontal feeder (102). A guide block (7) is screwed onto the double-ended screw (5). The guide block (7) is connected to the second protective plate (3). A cleaning assembly is disposed on the second protective plate (3) at a position corresponding to the conveyor belt (8), the cleaning assembly including a rotatably disposed cleaning belt (34). The cleaning assembly also includes an automatic telescopic cylinder (30) installed on one side wall of the two sets of second protective plates (3) that are close to each other, the automatic telescopic cylinder (30) being located inside the conveyor belt (8); The output end of the automatic telescopic cylinder (30) is connected to a fixed frame (31). The upper and lower ends of the inner sidewall of the automatic telescopic cylinder (30) are rotatably provided with second transmission rollers (33), and a cleaning belt (34) is sleeved between the two sets of second transmission rollers (33). A third motor (32) is installed on the side wall of the fixed frame (31) at a position corresponding to one of the sets of second drive rollers (33), and the cleaning belt (34) rotates through the cooperation of the third motor (32) and the second drive rollers (33).

2. The feeding device for processing self-tapping screws according to claim 1, characterized in that, The upper ends of the first protective plate (2) and the inclined feeding rack (101) are adapted to each other, and the bottom end of the first protective plate (2) is connected to one end of the second protective plate (3); The upper surface of the horizontal feeding rack (102) is provided with two sets of symmetrically distributed guide grooves (4). Each guide groove (4) is rotatably provided with a double-headed screw (5). Each double-headed screw (5) is screwed with two sets of symmetrically distributed guide blocks (7). The upper end of each guide block (7) is connected to the lower end of the corresponding second protective plate (3). The sidewall of the horizontal feeder (102) is equipped with a first motor (6) at the end position of each of the two sets of double-headed screws (5). The output end of the first motor (6) passes through the sidewall of the horizontal feeder (102) and is connected to the end of the corresponding double-headed screw (5).

3. The feeding device for processing self-tapping screws according to claim 2, characterized in that, The conveying assembly also includes a first transmission roller (10) installed on the side wall of the two sets of second protective plates (3) close to each other. There are two sets of the first transmission roller (10), and the two sets of the first transmission roller (10) are respectively installed at both ends of the second protective plate (3). The conveyor belt (8) is sleeved between the two sets of the first transmission roller (10) on the same side. The sidewalls of the two sets of second protective plates (3) are equipped with second motors (9) at positions corresponding to the first transmission rollers (10). The output end of the second motors (9) passes through the sidewalls of the second protective plates (3) and is connected to the corresponding first transmission rollers (10).

4. The feeding device for processing self-tapping screws according to claim 2, characterized in that, Two sets of second protective plates (3) are provided with extension plates (17) at the connection between the horizontal feeder (102) and the conveyor belt (8). The side walls of the two sets of extension plates (17) that are close to each other are provided with storage slots (28), and each storage slot (28) is provided with a transition plate (14). Multiple sets of spaced second return springs (29) are provided between the ends of each transition plate (14) and the inner wall of the corresponding storage groove (28). The two sets of transition plates (14) are in elastic contact through the cooperation of multiple sets of second return springs (29).

5. The feeding device for processing self-tapping screws according to claim 4, characterized in that, The inclined feeder (101) has a relief groove (15) at the upper end near the horizontal feeder (102), and an elastic buffer pad (16) is provided inside the relief groove (15). The inner sidewall of the clearance groove (15) is provided with a limiting groove (21) at the position corresponding to the elastic buffer pad (16). A limiting block (23) is slidably provided inside the limiting groove (21), and the limiting block (23) is connected to the extension plate (17). A first reset spring (22) is provided between the lower end of the limiting block (23) and the inner bottom end of the limiting groove (21).

6. The feeding device for processing self-tapping screws according to claim 5, characterized in that, The lower end of the extension plate (17) is provided with a wedge block (18), and the cross-section of the wedge block (18) is triangular. The elastic buffer pad (16) has a rotating shaft (19) rotatably disposed inside the wedge block (18) and the outer surface of the rotating shaft (19) is provided with multiple sets of circumferentially distributed levers (20). The inner wall of the elastic buffer pad (16) is provided with a driving device at the position corresponding to the rotating shaft (19) to drive the rotating shaft (19) to rotate.

7. The feeding device for processing self-tapping screws according to claim 6, characterized in that, The horizontal feeder (102) has a groove (25) on one side corresponding to the extension plate (17), and a filter plate (27) is provided at the upper end of the groove (25). A first collection box (26) is provided inside the groove (25) corresponding to the lower part of the filter plate (27).

8. The feeding device for processing self-tapping screws according to claim 7, characterized in that, The upper end of the horizontal feeder (102) is provided with a second collection box (35) corresponding to the position of the two sets of cleaning belts (34), and a second filter screen (36) is provided inside the second collection box (35). The upper end of the second filter screen (36) is provided with a mounting bracket (37), and the upper end of the mounting bracket (37) is provided with two sets of symmetrically distributed scrapers (38) corresponding to the positions of the two sets of cleaning belts (34).

9. The feeding device for processing self-tapping screws according to claim 8, characterized in that, Both sets of first protective plates (2) are provided with first limiting plates (11) near the inner wall of the second protective plate (3), and the inner walls of both sets of second protective plates (3) are provided with second limiting plates (12) at the end positions corresponding to the first limiting plates (11), and the first limiting plates (11) and the second limiting plates (12) are connected. Both sets of the second limiting plates (12) are provided with elastic baffles (13) on the side walls of the two sets of second limiting plates (12) that are close to each other.

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