A chain belt drywall nail body feeding structure and method

Abstract

This invention relates to the field of chain-belt drywall screw manufacturing technology, and more particularly to a screw feeding structure and method for chain-belt drywall screws. The screw feeding structure includes a screw conveyor disc and screw conveyor rails. Two screw conveyor rails are symmetrically distributed and are inclined, with the lower end of each rail corresponding to the position of the screw conveyor disc. In the screw feeding structure provided by this invention, during screw conveying, the limiting conveyor belt blocks and limits the top of the screw, thereby reducing the phenomenon of screws sliding downwards at an angle and causing jamming due to forward tilting of the end. Furthermore, by combining with a supporting conveyor belt, it can additionally increase the conveying driving force of the screw during the screw conveying process, allowing the screw to receive a force other than gravity, thus making the screw feeding smoother.

Description

Technical Field

[0001] This invention relates to the field of chain-belt drywall nail production technology, and in particular to a nail body feeding structure and method for chain-belt drywall nails. Background Technology

[0002] Chain-link drywall screws are a type of fastener product that uses a plastic or metal connecting belt (chain) to string together several drywall screws at equal intervals to form a continuous screw belt. A chain-link drywall screw assembly machine is a machine that assembles several screws by sequentially driving them into a chain belt. A conveyor mechanism transports several screws to the assembly point for initial assembly with the chain belt, and then a stamping mechanism completes the assembly of the screws and chain belt. The feeding structure refers to the general term for the mechanical device in automated equipment (such as automatic nail feeder drywall screw guns and chain-link drywall screw assembly machines) used to precisely transport chain-link drywall screws from a hopper or guide chute to the working position (tightening position or striking position) at fixed step lengths.

[0003] In existing chain-driven drywall screw feeding devices, after the screw is conveyed from the external vibratory feeder into the slide / guide rail, it mainly slides down along the slide / guide rail by its own weight. In this feeding method, when the friction between the screw and the slide / guide rail is greater than the weight of the screw sliding down, jamming can easily occur, thus reducing the stability of screw feeding.

[0004] Therefore, it is necessary to provide a new feeding structure for the nail body of chain-driven drywall nails to solve the above-mentioned technical problems. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a nail body feeding structure and method for chain-driven drywall nails.

[0006] The screw feeding structure for drywall screws provided by the present invention includes: a screw conveyor disc and a screw conveyor guide rail. The screw conveyor guide rail includes two screws that are symmetrically distributed. The screw conveyor guide rails are inclined and the lower end of the screw conveyor guide rail corresponds to the position of the screw conveyor disc. The top of the screw conveying guide rail is provided with a mounting groove, and a support conveyor belt for conveying screws is fixedly installed inside the mounting groove. The screw conveying guide rail is provided with an installation assembly, which includes a mounting frame for supporting the screw conveying guide rail. The mounting frame is movably erected and inclinedly distributed outside the screw conveying guide rail. The screw conveyor is equipped with a screw distribution assembly for distributing screws. The distribution assembly includes multiple distribution rings that are inserted and installed between the screw conveyor and the screw conveyor. Each distribution ring has multiple sets of distribution grooves of different specifications on its arc surface.

[0007] Preferably, the upper surface of the screw conveyor is provided with multiple insertion holes, and the insertion holes are provided with slidingly connected insertion rods. The top ends of the multiple insertion rods are fixedly connected to the bottom of the material distribution ring. The top of the material distribution ring is fixedly installed with a support rod, and the top ends of the multiple support rods are fixedly installed with the same gripping ring. Each support rod has a limit hole on its outer wall.

[0008] Preferably, the screw feeding assembly further includes a support plate, which is fixedly installed at the center of the top of the screw conveyor. A mounting shell is fixedly connected to the top of the support plate and the part opposite to the limiting hole. A sliding rod is inserted inside the mounting shell, and both ends of the sliding rod extend to the outside of the mounting shell. The sliding rod is a rectangular rod.

[0009] Preferably, a limiting rod is fixedly installed at the end of the sliding rod near the limiting hole, the end of the limiting rod is inserted into the limiting hole, and a pressing rod is fixedly installed at the end of the sliding rod away from the limiting hole, and the top end of the pressing rod is an arc-shaped sphere; A support column is fixedly installed at the center of the top of the support plate. A rotating cylinder with a threaded connection is sleeved on the outside of the support column. An extrusion cylinder with a fixed connection is sleeved on the outside of the rotating cylinder. The inner wall of the extrusion cylinder is funnel-shaped. The bottom opening of the funnel-shaped structure is relatively large, and the inner wall of the extrusion cylinder abuts against the top of the extrusion rod.

[0010] Preferably, a circular piece is fixedly connected to the outer wall of the sliding rod, the circular piece is located inside the mounting shell, and a limiting spring is also fitted outside the sliding rod, the limiting spring is also located inside the mounting shell, one end of the limiting spring is fixedly connected to the outer wall of the circular piece, and the other end of the limiting spring is fixedly connected to the inner wall of the mounting shell.

[0011] Preferably, the mounting assembly further includes a support frame and a mounting bracket. The mounting bracket is rotatably connected to the lower end of the mounting frame via a shaft. The support frame is located below the higher side of the mounting frame. Symmetrically distributed guide plates are fixedly installed on the top of the support frame. The guide plates have arc-shaped guide grooves inside, and the center of the arc-shaped guide grooves is the same as the node connecting the mounting frame and the mounting bracket. The arc-shaped guide groove is equipped with a sliding block. The opposite ends of the two blocks are fixedly installed with the same adapter frame, and the adapter frame is fixedly connected to the higher end of the mounting frame. A shaking spring is installed between the adapter frame and the support frame. One end of the shaking spring is fixedly connected to the adapter frame, and the other end of the shaking spring is fixedly connected to the support frame.

[0012] Preferably, the inner top of the mounting frame is provided with a suspension frame for suspending the limiting conveyor belt. Vertical guide rods are fixedly installed on both sides of the top of the suspension frame. A vertical adjusting rod is rotatably connected to the center of the top of the suspension frame. The top ends of the vertical guide rod and the vertical adjusting rod extend to the top of the mounting frame. The outer wall of the vertical guide rod is slidably connected to the inner top of the mounting frame, and the outer wall of the vertical adjusting rod is threadedly connected to the inner top of the mounting frame.

[0013] Preferably, a rotatably connected transverse adjusting rod is inserted into the center of the bottom of the mounting frame, and a fixedly connected transverse guide rod is mounted on both sides of the bottom of the mounting frame. Symmetrically distributed adapter pieces are fitted on the outside of the transverse guide rod and the transverse adjusting rod, and the top of the adapter piece is fixedly connected to the bottom of the screw conveying guide rail. The side walls of the two transition pieces are provided with through holes that are slidably connected to the transverse guide rod, and the side wall of the middle transition piece is provided with a threaded structure that is threadedly connected to the transverse adjustment rod, and the threaded directions of the two threaded structures are opposite. A support bar is fixedly installed on the outer wall of the screw conveying guide rail on one side, and two evenly distributed cameras are fixedly installed on the side of the support bar near the screw conveying guide rail.

[0014] Preferably, a support frame is fixedly installed at the lower end of the suspension frame, and a sliding frame is inserted inside the support frame. The bottom end of the sliding frame extends to the lower part of the support frame and is fixedly installed with a stop frame. The outer wall of the stop frame abuts against the end of the screw conveying guide rail, and an inclined block is fixedly installed at the bottom of the stop frame. A mounting plate is fixedly installed at the gap between the ends of two adjacent group material troughs at the top of the material distribution ring. A driving block is fixedly installed on the top of the mounting plate, and the rotation trajectory of the driving block overlaps with that of the inclined block. An upper magnetic plate is fixedly connected to the upper part of the outer wall of the sliding frame, and a lower magnetic plate is fixedly connected to the lower part of the outer wall of the sliding frame. Both the upper and lower magnetic plates are attracted to the support frame.

[0015] A method for feeding the nail body of a chain-belt drywall screw includes the following steps: Step 1: First, assemble the screw conveyor disc and screw conveyor rail with the chain conveyor components and screw feeding vibratory plate in the external chain drywall screw assembly machine; Step 2: Select and install the required size distribution ring, and adjust the spacing between the two screw conveyor rails and the position of the broken limit conveyor belt so that the screw conveyor disc and screw conveyor rail can convey and distribute screws of the required size. Step 3: Control the external vibratory feeder to feed the screws. At this time, the rotating support conveyor belt and the limiting conveyor belt can transport the screws that have entered the screw conveying guide rail, so that the screws can move towards the screw conveying plate. Step 4: During the screw conveying process, the movable mounting frame can drive the internal screw conveying guide rail to vibrate, so as to convert the static friction of the screw during the falling process into dynamic friction, destroy the stick-slip phenomenon of static friction, and ensure that the screw can continuously and stably slide forward on the supporting conveyor belt and be arranged closely in sequence. Step 5: After the screws are removed from the screw conveyor rail and fall into the distribution trough, the rotating screw conveyor disc will distribute and convey the screws, allowing the screws to be assembled with the external chain. This completes the screw conveying and distribution process.

[0016] Compared with related technologies, the chain-belt drywall screw feeding structure provided by the present invention has the following advantages: 1. In the present invention, during the screw conveying process, the limiting conveyor belt will block and limit the top of the screw, thereby reducing the phenomenon of screws sliding downwards and getting stuck due to the end tilting forward. In addition, by combining with the supporting conveyor belt, the conveying driving force of the screw can be increased during the screw conveying process, so that the screw can obtain a force other than gravity, thus making the screw unloading smoother.

[0017] 2. During the screw feeding process, the present invention can cause the screw conveyor rail to vibrate, so as to convert the static friction of the screw into dynamic friction during the falling process, destroy the stick-slip phenomenon of static friction, and ensure that the screw can continuously and stably slide forward on the supporting conveyor belt and be arranged closely in sequence, so that the screw can fall into each corresponding material trough in sequence later.

[0018] 3. Before conveying screws, the operator can remove the limiting rod from the limiting hole to release the limiting of the support rod according to the screw specifications. Then, the operator can directly grasp and lift the holding ring to complete the quick disassembly of the distributing ring, which makes it more flexible and convenient for the operator to replace and adjust the distributing ring.

[0019] 4. The present invention can also control the rotation of the transverse adjustment rod to adjust the position of the screw conveying guide rails on both sides, change the gap between the two screw conveying guide rails, so that the screw conveying guide rails can convey screws of different diameters.

[0020] 5. In this invention, when the screw conveying guide rail is feeding the screw into the screw conveying disc, the baffle frame located at the feeding end of the screw conveying guide rail can first block the screw located in the screw conveying guide rail. Before the first distribution slot in the next batch of distribution slots is aligned with the screw, the baffle frame can be lifted to release the restriction on the falling trajectory of the screw. Therefore, the first falling screw can fall smoothly into the first distribution slot, thereby avoiding the misalignment of the falling screw with the first distribution slot in each batch of distribution slots during startup, which would cause the drywall nail of the chain to be missing and result in the formation of waste material for the drywall nail of the chain. Attached Figure Description

[0021] Figure 1 A schematic diagram of a preferred embodiment of the chain-belt drywall screw feeding structure provided by the present invention; Figure 2 for Figure 1 The diagram shows the structure of the screw conveyor. Figure 3 for Figure 1 The diagram shows the structure of the screw delivery guide and its components. Figure 4 for Figure 1 The diagram shows a partial cross-sectional structure of the connection between the screw conveyor and the screw distribution assembly. Figure 5 for Figure 4 The diagram shows the structure of the material distribution ring and its components; Figure 6 for Figure 4 A partial cross-sectional structural diagram of the support plate and its components is shown. Figure 7 for Figure 1 A schematic diagram showing the orientation of the support frame and mounting plate; Figure 8 for Figure 1 The diagram shows the structural connection between the mounting assembly and the screw delivery guide. Figure 9 for Figure 8 The diagram shows a side view of the mounting components. Figure 10 for Figure 8 The diagram shows the structural connection between the mounting frame, the support frame, and the mounting bracket. Figure 11 for Figure 8 The diagram shows the structure of the support bar.

[0022] Numbered in the diagram: 1. Screw conveyor plate; 11. Insertion hole; 2. Screw conveyor guide rail; 21. Mounting groove; 22. Supporting conveyor belt; 3. Screw distribution assembly; 31. Distribution ring; 311. Distribution groove; 32. Support plate; 321. Support column; 322. Rotating cylinder; 323. Extrusion cylinder; 33. Mounting shell; 331. Sliding rod; 332. Limiting rod; 333. Circular piece; 334. Limiting spring; 335. Extrusion rod; 34. Support rod; 341. Limiting hole; 35. Grip ring; 36. Insertion rod; 4. Support frame; 41. Sliding frame ; 411, Upper magnetic plate; 412, Lower magnetic plate; 42, Baffle frame; 43, Inclined block; 5, Mounting plate; 51, Drive block; 6, Mounting assembly; 61, Mounting frame; 611, Vertical adjusting rod; 612, Vertical guide rod; 613, Horizontal guide rod; 62, Support frame; 621, Guide plate; 622, Arc-shaped guide groove; 63, Mounting bracket; 64, Adapter bracket; 641, Slider; 642, Vibration spring; 65, Suspension frame; 66, Horizontal adjusting rod; 661, Adapter plate; 7, Limiting conveyor belt; 8, Support bar; 81, Camera. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0025] Please see Figures 1 to 11 The present invention provides a screw feeding structure for drywall screws, which includes a screw conveyor disk 1 and a screw conveyor rail 2. The screw conveyor rail 2 includes two symmetrically distributed screws, which are inclined and the lower end of the screw conveyor rail 2 corresponds to the position of the screw conveyor disk 1.

[0026] In an embodiment of the present invention, please refer to Figure 1 , Figure 3 , Figure 8 , Figure 9 and Figure 10The screw conveyor rail 2 has a mounting groove 21 on its top. A support conveyor belt 22 for conveying screws is fixedly installed inside the mounting groove 21. An installation assembly 6 is provided on the outside of the screw conveyor rail 2. The installation assembly 6 includes a mounting frame 61 that supports the screw conveyor rail 2. The mounting frame 61 is movably mounted and inclined outside the screw conveyor rail 2. The installation assembly 6 also includes a support frame 62 and a mounting bracket 63. The mounting bracket 63 is rotatably connected to the lower end of the mounting frame 61 via a shaft. The support frame 62 is located below the higher side of the mounting frame 61. Symmetrically distributed guide rails are fixedly installed on the top of the support frame 62. The guide plate 621 has an arc-shaped guide groove 622 inside. The center of the arc-shaped guide groove 622 is the same as the node connecting the mounting frame 61 and the mounting bracket 63. The arc-shaped guide groove 622 has a sliding block 641 inside. The opposite ends of the two sliding blocks 641 are fixedly installed with the same adapter 64. The adapter 64 is fixedly connected to the higher end of the mounting frame 61. A vibrating spring 642 is installed between the adapter 64 and the support frame 62. One end of the vibrating spring 642 is fixedly connected to the adapter 64, and the other end of the vibrating spring 642 is fixedly connected to the support frame 62.

[0027] It should be noted that since the mounting frame 61 is installed at an angle, when the screw falls from the vibratory plate onto the screw conveying guide rail 2 during use, the vibration force generated by the falling will be transmitted to the shaking spring 642. At this time, the shaking force of the shaking spring 642 will drive the adapter 64. The adapter 64 will then reciprocate within the arc-shaped guide groove 622 via the sliders 641 on both side walls. Since the arc-shaped guide groove 622 is relatively short and its center is the same as the node connecting the mounting frame 61 and the mounting bracket 63, the slider 641 can be reciprocated within the arc-shaped guide groove 622 while limiting its sliding trajectory. This limits the shaking amplitude of the mounting frame 61, allowing the mounting frame 61 to drive the internal components to vibrate slightly with the connection point with the mounting bracket 63 as the node. Because the screws are relatively stationary during the feeding process and the supporting conveyor belt 22 is not perfectly smooth, the static friction between the screws and the supporting conveyor belt 22 often causes the screws to "get stuck" on the supporting conveyor belt 22 and not slide down. This can easily cause gaps between adjacent screws. This slight vibration will convert static friction into dynamic friction, destroy the "stick-slip" phenomenon, and ensure that the screws can slide forward continuously and stably on the supporting conveyor belt 22. This allows multiple screws to be arranged closely in sequence, so that the screws can fall into each corresponding distribution trough 311 in sequence later.

[0028] In an embodiment of the present invention, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 The screw conveyor 1 is equipped with a screw distribution assembly 3 for distributing screws. The distribution assembly includes multiple distribution rings 31, which are inserted and installed between the screw conveyor 1 and the screw conveyor 1. Each distribution ring 31 has multiple sets of distribution grooves 311 of different specifications on its arc surface. The upper surface of the screw conveyor 1 has multiple insertion holes 11, and slidingly connected insertion rods 36 are inserted into the insertion holes 11. The top ends of the multiple insertion rods 36 are fixedly connected to the bottom of the distribution rings 31. A support rod is fixedly installed on the top of the distribution rings 31. 34. The top of multiple support rods 34 is fixedly mounted with the same gripping ring 35, and each support rod 34 has a limiting hole 341 on its outer wall. The screw feeding assembly 3 also includes a support plate 32, which is fixedly mounted at the center of the top of the screw conveyor 1. The top of the support plate 32 and the part opposite to the limiting hole 341 are fixedly connected to the mounting shell 33. A sliding rod 331 is inserted inside the mounting shell 33, and both ends of the sliding rod 331 extend to the outside of the mounting shell 33. The sliding rod 331 is rectangular. A sliding rod 331 has a limiting rod 332 fixedly installed at its end near the limiting hole 341. The end of the limiting rod 332 is inserted into the limiting hole 341. A pressing rod 335 is fixedly installed at the end of the sliding rod 331 away from the limiting hole 341, and the top of the pressing rod 335 is an arc-shaped sphere. A support column 321 is fixedly installed at the center of the top of the support plate 32. A threaded rotating cylinder 322 is sleeved on the outside of the support column 321. A fixedly connected pressing cylinder 323 is sleeved on the outside of the rotating cylinder 322. The inner wall is funnel-shaped, and the bottom opening of the funnel-shaped structure is relatively large. The inner wall of the extrusion cylinder 323 abuts against the top of the extrusion rod 335. A circular piece 333 is fixedly connected to the outer wall of the sliding rod 331. The circular piece 333 is located inside the mounting shell 33. A limiting spring 334 is also fitted on the outside of the sliding rod 331. The limiting spring 334 is also located inside the mounting shell 33. One end of the limiting spring 334 is fixedly connected to the outer wall of the circular piece 333, and the other end of the limiting spring 334 is fixedly connected to the inner wall of the mounting shell 33.

[0029] It should be noted that: since the material distribution ring 31 is connected to the screw conveyor disc 1 by inserting the bottom insert rod 36 into the insert hole 11, during use, when the operator rotates the rotating cylinder 322, causing it to move vertically spirally on the support column 321, the outer extrusion cylinder 323 will move synchronously during the movement of the rotating cylinder 322. At this time, the inner wall of the extrusion cylinder 323 will abut against the top of the extrusion rod 335. Since the inner wall of the extrusion cylinder 323 has a funnel-shaped structure, when the extrusion cylinder 323 moves downward, This allows multiple extrusion rods 335 to move towards the support column 321. The moving extrusion rods 335 can pull the sliding rod 331, which in turn causes the sliding rod 331 to move the end limit rod 332, allowing the limit rod 332 to move out of the limit hole 341. This releases the vertical movement trajectory limitation of the insertion rod 36, allowing the worker to lift and remove the material distribution ring 31 from the screw conveyor 1 when holding and lifting the gripping ring 35. Therefore, it is convenient for the worker to flexibly disassemble and replace the material distribution ring 31. After the operator inserts the corresponding specification distribution ring 31 into the screw conveyor 1, the rotating cylinder 322 can be rotated in the opposite direction to release the compression cylinder 323 from limiting the compression rod 335. At this time, the limiting spring 334 located in the mounting shell 33 will compress the sliding rod 331 through its own force, so that the limiting rod 332 can be stably inserted into the limiting hole 341. At the same time, since the force of the limiting spring 334 is towards the outside of the screw conveyor 1, the centrifugal force can also increase the driving force on the limiting rod 332 when the screw conveyor 1 rotates, so that the limiting rod 332 is also stably located in the limiting hole 341 during operation.

[0030] In an embodiment of the present invention, please refer to Figure 1 , Figure 8 , Figure 10 and Figure 11The inner top of the mounting frame 61 is provided with a suspension frame 65 for suspending the limiting conveyor belt 7. Vertical guide rods 612 are fixedly installed on both sides of the top of the suspension frame 65. A rotatably connected vertical adjusting rod 611 is installed at the center of the top of the suspension frame 65. The top ends of both the vertical guide rods 612 and the vertical adjusting rod 611 extend above the mounting frame 61. The outer wall of the vertical guide rod 612 is slidably connected to the inner top of the mounting frame 61, and the outer wall of the vertical adjusting rod 611 is threadedly connected to the inner top of the mounting frame 61. A rotatably connected transverse adjusting rod 66 is inserted into the center of the inner bottom of the mounting frame 61. Both sides of the inner bottom of the mounting frame 61 are supported by... A horizontal guide rod 613 with a fixed connection is provided. Both the horizontal guide rod 613 and the horizontal adjusting rod 66 are fitted with symmetrically distributed adapter pieces 661. The top of the adapter piece 661 is fixedly connected to the bottom of the screw conveying guide rail 2. The side walls of the two adapter pieces 661 are provided with through holes that are slidably connected to the horizontal guide rod 613. The side wall of the middle adapter piece 661 is provided with a threaded structure that is threadedly connected to the horizontal adjusting rod 66. The thread directions of the two threaded structures are opposite. A support bar 8 is fixedly installed on the outer wall of one side of the screw conveying guide rail 2. Two evenly distributed cameras 81 are fixedly installed on the side of the support bar 8 closest to the screw conveying guide rail 2.

[0031] It should be noted that before feeding the screws, the vertical adjusting rod 611 and the horizontal adjusting rod 66 can be rotated as needed. The rotating vertical adjusting rod 611 will move vertically within the mounting frame 61 through the threaded structure on the outer wall. Since the bottom end of the vertical adjusting rod 611 is rotatably connected to the suspension frame 65, the suspension frame 65 can be prevented from rotating synchronously when the vertical adjusting rod 611 rotates. Then, by combining with the vertical guide rod 612, the vertical movement can be stably carried out, thereby adjusting the height of the internal limiting conveyor belt 7 so that its bottom can abut against the screw heads of different specifications. Therefore, the head of the screw can be limited when it moves, preventing the screw from overturning due to tilting force and falling force when it tilts and slips. Thus, the screw feeding is more stable. In this embodiment: Since the thread directions of the threaded structures on both sides of the outer wall of the transverse adjusting rod 66 are opposite, when the transverse adjusting rod 66 rotates, it will drive the adapter plate 661 on the outer wall to move relative to or opposite to each other. Thus, the adapter plate 661 can drive the corresponding screw conveying guide 2 to move, thereby adjusting the distance between the two screw conveying guides 2, so that the distance can be smoothly adapted to the shank of screws of different specifications, and the shank can slide smoothly. Meanwhile, the supporting conveyor belt 22 in the screw conveyor guide 2 can abut against the bottom of the screw head to support the screw during this process. Therefore, when the supporting conveyor belt 22 rotates, it can increase the driving force for the screw to be conveyed downward, so that the screw can obtain a force other than gravity, thus making the screw feeding smoother. Since there are two cameras 81, with the lower side closer to the screw conveying guide rail 2 being camera 1 and the higher side closer to the screw conveying guide rail 2 being camera 2, when the external vibratory feeder is feeding screws, the terminal controller can monitor the position of the screws in the screw conveying guide rail 2 through camera 2. When too many screws accumulate inside the screw conveying guide rail 2 and pile up to the relatively high end, the terminal controller will monitor the position of the screws through camera 2, and thus can control the external vibratory feeder to stop conveying. Similarly, when the screws in the screw conveying guide rail 2 continue to fall, the controller can monitor the screws through camera 1. When the screws in the image have finished falling, the controller can immediately control the external vibratory feeder to feed the screws, thus avoiding the phenomenon of screw shortage.

[0032] In an embodiment of the present invention, please refer to Figure 1 , Figure 5 and Figure 7 A support frame 4 is fixedly installed at the lower end of the suspension frame 65. A sliding frame 41 is inserted inside the support frame 4. The bottom end of the sliding frame 41 extends to the bottom of the support frame 4 and is fixedly installed with a stop frame 42. The outer wall of the stop frame 42 abuts against the end of the screw conveying guide rail 2. An inclined block 43 is fixedly installed at the bottom of the stop frame 42. A fixedly connected mounting piece 5 is installed at the gap between the ends of two adjacent material troughs 311 at the top of the material distribution ring 31. A driving block 51 is fixedly installed on the top of the mounting piece 5, and the rotation trajectory of the driving block 51 overlaps with the inclined block 43. A fixedly connected upper magnetic plate 411 is sleeved on the upper part of the outer wall of the sliding frame 41, and a fixedly connected lower magnetic plate 412 is sleeved on the lower part of the outer wall of the sliding frame 41. Both the upper magnetic plate 411 and the lower magnetic plate 412 are attracted to the support frame 4.

[0033] It should be noted that: since the rotation trajectory of the drive block 51 overlaps with that of the inclined block 43, the screw conveyor 1 can drive the drive block 51 to rotate synchronously through the material distribution ring 31 during the rotation process. When the drive block 51 rotates to abut against the inclined block 43, the inclined slope of the inclined block 43 will convert the rotational force of the drive block 51 into a vertical driving force on the inclined block 43. At this time, the driving force will act on the sliding frame 41 through the baffle frame 42 and cause the sliding frame 41 to slide upward in the support frame 4. This allows the baffle frame 42 to move out of the outside of the screw conveyor guide rail 2 and remove the obstruction to the end of the screw conveyor guide rail 2. When the lower magnetic plate 412 below the sliding frame 41 abuts against the support frame 4, the lower magnetic plate 412 will suspend and fix the baffle frame 42 by the adsorption force between it and the support frame 4. Thus, the screw in the screw conveying guide rail 2 can slide down smoothly. At this time, the screw that slides out will abut against the gap between the two adjacent groups of material troughs 311 on the outer wall of the material distribution ring 31. As the material distribution ring 31 continues to rotate, the foremost screw will fall into the foremost trough of the group of material troughs 311. The screws that fall down in turn can fall into the subsequent material troughs 311 in sequence. This can avoid the screws falling down from being misaligned with the first material trough 311 in each group of material troughs 311 when starting up, which would cause the dry wall nail of the chain to be missing and result in the formation of waste material of the dry wall nail of the chain. In this embodiment, the screw distribution assembly 3 is provided with a screw-proof component to shield the screws from falling off. This prevents the screws in the distribution groove 311 from falling off when the distribution ring 31 rotates to distribute the falling screws, thus allowing the screws to be smoothly assembled with the external chain. Meanwhile, after the magnetic plate 412 and the support frame 4 are attracted to each other, the suspended inclined block 43 can be located above the drive block 51, thereby avoiding the phenomenon of continuous contact between the drive block 51 and the inclined block 43 during subsequent cyclic rotation, and thus making the rotation of the screw conveyor 1 smoother.

[0034] A method for feeding the nail body of a chain-belt drywall screw includes the following steps: Step 1: First, assemble the screw conveyor 1 and screw conveyor guide 2 with the chain conveyor components and screw feeding vibratory plate in the external chain drywall screw assembly machine; Step 2: Select and install the required specification of the distribution ring 31, and adjust the spacing between the two screw conveying guide rails 2 and the position of the broken limit conveyor belt 7 so that the screw conveying disc 1 and the screw conveying guide rail 2 can convey and distribute screws of the required specification. Step 3: Control the external vibrating plate to feed the screws. At this time, the rotating support conveyor belt 22 and the limiting conveyor belt 7 can transport the screws that enter the screw conveying guide rail 2, so that the screws can move towards the screw conveying plate 1. Step 4: During the screw conveying process, the movable mounting frame 61 can drive the internal screw conveying guide rail 2 to vibrate, so as to convert the static friction of the screw into dynamic friction during the screw falling process, destroy the stick-slip phenomenon of static friction, and ensure that the screw can continuously and stably slide forward on the supporting conveyor belt 22 and be arranged closely in sequence. Step 5: After the screw is removed from the screw conveyor rail 2 and falls into the distribution trough 311, the rotating screw conveyor disc 1 will distribute and convey the screw, so that the screw can be assembled with the external chain belt. This completes the conveying and distribution of the screw.

[0035] The working principle of the chain-belt drywall screw feeding structure provided by this invention is as follows: When using this chain-belt drywall screw feeding structure, the structure can first be assembled with the connecting conveyor structure in the chain-belt drywall screw assembly machine to form a whole. Then, the rotating cylinder 322 can be turned so that the rotating cylinder 322 drives the extrusion cylinder 323 to move downward on the outer wall of the support column 321 through the thread structure. The downward moving extrusion cylinder 323 will drive multiple extrusion rods 335 to move towards the center of the support column 321 by abutting against the end of the extrusion rod 335. During the movement of the extrusion rod 335, it will drive the sliding rod 331 to slide synchronously within the mounting housing 33. The sliding of the sliding rod 331 will move the end limiting rod 332 out of the limiting hole 341, separating it from the support rod 34. Then, the operator can grip the holding ring 35 and apply a lifting force, thereby lifting the distributing ring 31 upwards so that the bottom insertion rod 36 is removed from the insertion hole 11, thus completing the quick disassembly of the distributing ring 31. Then, the distributing groove 311 that matches the screw specification can be taken out, and the bottom insertion rod 36 can be removed. 6. Insert the insert into the socket 11 and reverse the rotation of the rotating cylinder 322 to release the extrusion cylinder 323 from the extrusion rod 335. At this time, the limiting spring 334 located in the mounting shell 33 will drive the sliding rod 331 through its own force, so that the limiting rod 332 at the end of the sliding rod 331 can be re-inserted into the limiting hole 341 to limit the material distribution ring 31. The replacement and fixing of the material distribution ring 31 can be completed quickly, and the material distribution groove 311 in the material distribution ring 31 can stably rotate and distribute the screws falling in the screw conveying guide rail 2. Next, the horizontal adjustment rod 66 can be controlled to rotate. The rotating horizontal adjustment rod 66 will drive the corresponding adapter plate 661 to move through the thread structure with opposite thread directions on both sides of the outer wall. At this time, the moving adapter plate 661 will drive the top screw conveying guide rail 2 to move synchronously, thereby adjusting the gap between the two screw conveying guide rails 2 so that the gap between the two screw conveying guide rails 2 can be adapted to the screw diameter specification to be conveyed. Therefore, when the external vibrating plate conveys the screw onto the screw conveying guide rail 2, the two sides of the connection surface between the screw head and the rod will abut against the top of the supporting conveyor belt 22 in the screw conveying guide rail 2. At this time, the supporting conveyor belt 22 will support the screw. As the screw slides down automatically, the rotating supporting conveyor belt 22 can also assist in conveying the screw, thus reducing the phenomenon of jamming during the screw falling and feeding process. Furthermore, during the movement of the screw, the limiting conveyor belt 7 suspended above the screw guide rail will limit the head of the screw, thereby reducing the phenomenon of the screw head tilting too much and flipping over. In addition, the rotation of the limiting conveyor belt 7 can also assist in driving the screw and help increase the smoothness of the screw feeding and movement. The vibration force generated when the screw falls from the vibratory plate onto the screw conveyor rail 2 is transmitted to the shaking spring 642. The shaking force of the shaking spring 642 then drives the adapter frame 64. The adapter frame 64 then moves back and forth in the arc-shaped guide groove 622 via the sliders 641 on both sides of the adapter frame 64. Since the end of the mounting frame 61 away from the adapter frame 64 is rotatably connected to the mounting frame 63, the mounting frame 61 can drive the internal components to vibrate slightly around the connection point with the mounting frame 63. Because the screws are relatively stationary with respect to the supporting conveyor belt 22 during the feeding process, and the surface of the supporting conveyor belt is not absolutely smooth, the static friction between the screws and the supporting conveyor belt 22 often causes the screws to "get stuck" on the supporting conveyor belt 22 and not slide down. This can easily cause gaps between adjacent screws. This slight vibration will convert static friction into dynamic friction, destroy the "stick-slip" phenomenon, and ensure that the screws can slide forward continuously and stably on the supporting conveyor belt 22. This allows multiple screws to be arranged closely in sequence, so that the screws can fall into each corresponding distribution trough 311 in sequence later. Before initial startup, the baffle 42 located at the lower end of the screw conveying guide 2 will block the falling trajectory of the screw. When the rotating screw conveying disk 1 drives the upper drive block 51 to move to the position opposite to the inclined block 43, the rotating drive block 51 will abut against the inclined block 43. Since the abutting parts of both are inclined structures, the rotational force of the horizontal rotation of the drive block 51 can be converted into a vertical driving force on the inclined block 43, so that the inclined block 43 can drive the baffle 42 and the sliding frame 41 to slide upward. When the lower magnetic plate 412 in the sliding frame 41 abuts against the bottom of the support frame 4, the lower magnetic plate 412 can suspend and support the baffle 42 through the adsorption force between it and the support frame 4, so that the baffle 42 can release the obstruction of the screw and allow the screw to fall smoothly. The falling screw will first abut against the gap between the two groups of material distribution grooves 311 in the material distribution ring 31. The gap will continue to block the falling trajectory of the screw until the first material distribution groove 311 in the group of material distribution grooves moves to the position opposite the screw. The screw will then fall into the material distribution groove 311. As the screw conveyor disc 1 continues to rotate, the falling screws will fall into the material distribution grooves 311 in sequence. Therefore, it can avoid the phenomenon that the falling screws do not correspond to the first material distribution groove 311 in each group of material distribution grooves when the device is started. This allows the rotating screw conveyor belt to stably convey the screws, so that the screws can be assembled with the external conveyor belt. This can avoid the phenomenon that the first group of assembled chain drywall screws is missing when starting.

[0036] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A screw feeding structure for drywall screws, comprising a screw conveyor disc (1) and a screw conveyor guide rail (2), wherein the screw conveyor guide rail (2) comprises two symmetrically distributed screw conveyor guide rails (2) and the screw conveyor guide rails (2) are inclinedly distributed, and the lower end of the screw conveyor guide rail (2) corresponds to the position of the screw conveyor disc (1); Its features are: The top of the screw conveying guide (2) is provided with a mounting groove (21), and a support conveyor belt (22) for conveying screws is fixedly installed inside the mounting groove (21). The screw conveying guide (2) is provided with a mounting assembly (6) on the outside. The mounting assembly (6) includes a mounting frame (61) for supporting the screw conveying guide (2). The mounting frame (61) is movably erected and inclinedly distributed outside the screw conveying guide (2). The screw conveyor (1) is provided with a screw distribution assembly (3) for distributing screws. The distribution assembly includes a distribution ring (31). Multiple distribution rings (31) are provided and are inserted between the screw conveyor (1). Each distribution ring (31) has multiple distribution grooves (311) of different specifications on its arc surface.

2. The nail body feeding structure for chain-belt drywall nails according to claim 1, characterized in that, The upper surface of the screw conveyor (1) is provided with a plurality of insertion holes (11). Inserted rods (36) are slidably connected inside the insertion holes (11). The top ends of the plurality of insertion rods (36) are fixedly connected to the bottom of the material distribution ring (31). A support rod (34) is fixedly installed on the top of the material distribution ring (31). The top ends of the plurality of support rods (34) are fixedly installed with the same gripping ring (35). A limit hole (341) is provided on the outer wall of each support rod (34).

3. The nail body feeding structure for chain-belt drywall nails according to claim 2, characterized in that, The screw feeding assembly (3) also includes a support plate (32), which is fixedly installed at the center of the top of the screw conveyor (1). The top of the support plate (32) and the corresponding part of the limiting hole (341) are both fixedly connected to the mounting shell (33). A sliding rod (331) is inserted inside the mounting shell (33). Both ends of the sliding rod (331) extend to the outside of the mounting shell (33), and the sliding rod (331) is a rectangular rod.

4. The nail body feeding structure for chain-belt drywall nails according to claim 3, characterized in that, A limiting rod (332) is fixedly installed at the end of the sliding rod (331) near the limiting hole (341), and the end of the limiting rod (332) is inserted into the limiting hole (341). A pressing rod (335) is fixedly installed at the end of the sliding rod (331) away from the limiting hole (341), and the top of the pressing rod (335) is an arc-shaped sphere. A support column (321) is fixedly installed at the center of the top of the support plate (32). A rotating cylinder (322) with a threaded connection is sleeved on the outside of the support column (321). A pressing cylinder (323) with a fixed connection is sleeved on the outside of the rotating cylinder (322). The inner wall of the pressing cylinder (323) is trumpet-shaped. The bottom opening of the trumpet-shaped structure is relatively large. The inner wall of the pressing cylinder (323) abuts against the top of the pressing rod (335).

5. The nail body feeding structure for chain-belt drywall nails according to claim 4, characterized in that, A circular piece (333) is fixedly connected to the outer wall of the sliding rod (331). The circular piece (333) is located inside the mounting shell (33). A limiting spring (334) is also fitted on the outside of the sliding rod (331). The limiting spring (334) is also located inside the mounting shell (33). One end of the limiting spring (334) is fixedly connected to the outer wall of the circular piece (333), and the other end of the limiting spring (334) is fixedly connected to the inner wall of the mounting shell (33).

6. The nail body feeding structure for chain-belt drywall nails according to claim 1, characterized in that, The mounting assembly (6) also includes a support frame (62) and a mounting bracket (63). The mounting bracket (63) is rotatably connected to the lower end of the shaft mounting frame (61). The support frame (62) is located below the higher side of the mounting frame (61). Symmetrically distributed guide plates (621) are fixedly installed on the top of the support frame (62). An arc-shaped guide groove (622) is opened inside the guide plate (621). The center of the arc-shaped guide groove (622) is the same as the node connecting the mounting frame (61) and the mounting bracket (63). The arc-shaped guide groove (622) is provided with a sliding block (641) inside. The two sides of the slider (641) are fixedly installed with the same adapter (64). The adapter (64) is fixedly connected to the higher end of the mounting frame (61). A shaking spring (642) is provided between the adapter (64) and the support frame (62). One end of the shaking spring (642) is fixedly connected to the adapter (64), and the other end of the shaking spring (642) is fixedly connected to the support frame (62).

7. The nail body feeding structure for chain-belt drywall nails according to claim 1, characterized in that, The inner top of the mounting frame (61) is provided with a suspension frame (65) for suspending the limiting conveyor belt (7). Vertical guide rods (612) are fixedly installed on both sides of the top of the suspension frame (65). A vertical adjusting rod (611) is rotatably connected to the center of the top of the suspension frame (65). The top ends of the vertical guide rod (612) and the vertical adjusting rod (611) extend to the top of the mounting frame (61). The outer wall of the vertical guide rod (612) is slidably connected to the inner top of the mounting frame (61), and the outer wall of the vertical adjusting rod (611) is threadedly connected to the inner top of the mounting frame (61).

8. The nail body feeding structure for chain-belt drywall nails according to claim 1, characterized in that, A rotatably connected transverse adjustment rod (66) is inserted into the center of the bottom of the mounting frame (61). A fixedly connected transverse guide rod (613) is mounted on both sides of the bottom of the mounting frame (61). A symmetrically distributed adapter piece (661) is fitted on the outside of the transverse guide rod (613) and the transverse adjustment rod (66). The top of the adapter piece (661) is fixedly connected to the bottom of the screw conveying guide rail (2). The side walls of the two transition pieces (661) are provided with through holes that are slidably connected to the transverse guide rod (613), and the side walls of the middle transition piece (661) are provided with threaded structures that are threadedly connected to the transverse adjusting rod (66), and the thread directions of the two threaded structures are opposite. A support bar (8) is fixedly installed on the outer wall of the screw conveying guide (2) on one side, and two evenly distributed cameras (81) are fixedly installed on the side of the support bar (8) near the screw conveying guide (2).

9. The nail body feeding structure for chain-belt drywall nails according to claim 7, characterized in that, A support frame (4) is fixedly installed at the lower end of the suspension frame (65). A sliding frame (41) is inserted inside the support frame (4). The bottom end of the sliding frame (41) extends to the lower part of the support frame (4) and is fixedly installed with a baffle (42). The outer wall of the baffle (42) abuts against the end of the screw conveying guide rail (2). An inclined block (43) is fixedly installed at the bottom of the baffle (42). A fixedly connected mounting plate (5) is installed at the gap between the ends of the two adjacent group feeding troughs (311) at the top of the feeding ring (31). A driving block (51) is fixedly installed on the top of the mounting plate (5), and the rotation trajectory of the driving block (51) overlaps with the inclined block (43). An upper magnetic plate (411) is fixedly connected to the upper part of the outer wall of the sliding frame (41), and a lower magnetic plate (412) is fixedly connected to the lower part of the outer wall of the sliding frame (41). Both the upper magnetic plate (411) and the lower magnetic plate (412) are attracted to the support frame (4).

10. A method for feeding the nail body of a chain-driven drywall screw, using the nail body feeding structure for a chain-driven drywall screw according to any one of claims 1 to 9, characterized in that, Includes the following steps: Step 1: First, assemble the screw conveyor disc (1) and screw conveyor rail (2) with the chain conveyor components and screw feeding vibratory plate in the external chain drywall screw assembly machine; Step 2: Select the required specification of the distribution ring (31) for installation, and adjust the spacing between the two sides of the screw conveying guide rail (2) and the position of the broken limit conveyor belt (7) so that the screw conveying disc (1) and the screw conveying guide rail (2) can convey and distribute the screws of the required specification. Step 3: Control the external vibrating plate to feed the screws. At this time, the rotating support conveyor belt (22) and the limiting conveyor belt (7) can transport the screws that enter the screw conveying guide rail (2) so that the screws can move towards the screw conveying plate (1). Step 4: During the screw conveying process, the movable mounting frame (61) can drive the internal screw conveying guide rail (2) to vibrate, so as to convert the static friction of the screw into dynamic friction during the screw falling process, destroy the stick-slip phenomenon of static friction, and ensure that the screw can continuously and stably slide forward on the supporting conveyor belt (22) and be arranged closely in sequence. Step 5: After the screw is removed from the screw conveyor rail (2) and falls into the distribution groove (311), the rotating screw conveyor disc (1) will distribute and convey the screw, so that the screw can be assembled with the external chain belt. This completes the conveying and distribution of the screw.

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