A cutting mechanism for producing a drill tail screw

Abstract

The present application relates to the field of metal wire, specifically to a cutting mechanism for drill tail screw production, comprising a base, a first straightening assembly, a second straightening assembly, a cutting assembly and a conveying assembly, the base is provided with a movable sliding seat, and the sliding seat is located between the first straightening assembly and the second straightening assembly, the upper surface of the sliding seat is provided with two moving grooves, and the two moving grooves are both slidingly connected with sliding blocks; the first straightening assembly eliminates the bending deformation caused by the metal wire coil, and the radial limiting guide of the straightening hole ensures that the metal wire is conveyed along the preset axis, and then the two groups of sliding blocks on the sliding seat and the clamping assembly are driven to realize the alternate equal-interval feeding through the tow line assembly, so as to avoid the feeding interruption of single group feeding structure during the return stroke, and the feeding length can be accurately controlled by controlling the rotating circle number of the first motor, so as to solve the problems that the existing technology cannot meet the high-precision requirement of metal wire segment length and the finished product size deviation is prone to occur.

Description

Technical Field

[0001] This invention relates to the field of metal wire cutting technology, and in particular to a cutting mechanism for the production of self-drilling screws. Background Technology

[0002] A self-drilling screw is a fastener with a drill head, widely used in steel structures, plate connections, and other applications. In its production process, the coiled metal wire raw material needs to be cut into standard length segments, and then further processed into finished screws. The cutting length accuracy and cut smoothness of the metal segments directly determine the processing accuracy and finished product quality of the self-drilling screw.

[0003] Chinese patent CN104841812A discloses a device for cutting metal wire. It continuously guides the metal wire on the spool to the upper cutter of the cutting device through a guiding mechanism. The transfer mechanism continuously transfers the metal wire segments cut by the upper cutter to the carrier plate of the conveying mechanism. After the carrier plate or the container on it is full, the metal wire segments are transferred to a predetermined station or out of the metal wire cutting device through the conveying track of the conveying mechanism.

[0004] The above solution still has the following problems: First, it only has the effect of conveying metal wires, which is difficult to meet the high precision requirements of the length of metal wire segments and is prone to deviations in the finished product size; Second, the method of using one tool to fix and another tool to reciprocate to cut the metal wire is prone to getting stuck on the fixed tool when feeding after the metal wire is cut, which affects the processing efficiency.

[0005] Therefore, it is necessary to improve upon the shortcomings of the existing technologies mentioned above. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a cutting mechanism for the production of self-drilling screws, which addresses the shortcomings of the prior art. This mechanism only has the function of conveying metal wire, which is difficult to meet the high precision requirements of the length of the metal wire segment, and is prone to finished product size deviation. In addition, the method of using one tool to fix and another tool to reciprocate to cut the metal wire has the problem that the end of the cut metal wire is easy to get stuck on the fixed tool when feeding, which affects the processing efficiency.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a cutting mechanism for producing self-drilling screws, comprising a base, a first straightening component, a second straightening component, a cutting component, and a conveying component.

[0008] The base is provided with a movable slide, which is located between the first straightening component and the second straightening component. The upper surface of the slide has two moving grooves, and a slider is slidably connected in each of the two moving grooves. The slide is provided with a wire-pulling component for controlling the movement of the two sliders respectively. Each of the two sliders is provided with a clamping component for clamping the metal wire, and the two sliders complete the alternating equal-interval feeding through the wire-pulling component and the clamping component.

[0009] The second straightening component includes a fixed base fixedly connected to the base, a conical cylinder embedded in the fixed base, and a wire outlet on the conical cylinder.

[0010] The cutting assembly is located between the second straightening assembly and the conveying assembly. The cutting assembly includes two cutting blades and a control component. The control component controls the relative movement of the two cutting blades, and the relative movement of the two cutting blades cuts the metal wire straightened by the second straightening assembly.

[0011] The above technical solution is further configured as follows: the first straightening assembly includes a straightening box, a first straightening roller arranged at equal intervals in the transverse direction, and a second straightening roller arranged at equal intervals in the transverse direction. The first straightening roller and the second straightening roller are rotatably connected inside the straightening box. The first straightening roller and the second straightening roller are arranged alternately, and the metal wire is located between the first straightening roller and the second straightening roller. The bottom surface of the straightening box is fixedly connected to the upper surface of the base.

[0012] A further provision of the above technical solution is that a fixing plate is fixedly connected to one side of the straightening box near the slide, and a straightening hole is opened in the middle of the fixing plate, with the metal wire located inside the straightening hole.

[0013] A further configuration of the above technical solution is as follows: a first cylinder is installed on the upper surface of the base, at least one guide rail is fixedly connected to the upper surface of the base, a guide groove matching the guide rail is opened on the bottom surface of the slide, and the slide is slidably connected to the guide rail through the guide groove.

[0014] A further configuration of the above technical solution is as follows: each of the two cable-carrying assemblies includes a first motor mounted on a slide block and a screw rotatably connected to a moving slot, the output shaft of the first motor is mounted on the screw, and the bottom end of the slider is threadedly connected to the screw.

[0015] A further provision of the above technical solution is that the clamping assembly includes an upper moving plate and a lower moving plate arranged sequentially along the vertical direction, and clamping plates are fixedly connected to the side of the lower moving plate and the upper moving plate that are close to each other, and clamping grooves are provided on the side of the two clamping plates that are close to each other.

[0016] A further configuration of the above technical solution is as follows: the clamping assembly further includes a second cylinder mounted on one side of the slider, a first guide rod fixedly connected to both ends of the bottom surface of the upper moving plate, and a second guide rod fixedly connected to both ends of the bottom surface of the lower moving plate. Two sets of first guide seats and two sets of second guide seats are fixedly connected to one side of the slider. The bottom end of the first guide rod passes through the lower moving plate and the two first guide seats in sequence and extends to the bottom of the first guide seats. The bottom end of the second guide rod passes through the two second guide seats in sequence and extends to the bottom of the second guide seats. The telescopic end of the second cylinder is mounted on the lower moving plate. A first rack is mounted at the middle end of the first guide rod, and a second rack is mounted at the middle end of the second guide rod. Two support shafts are fixedly connected to the slider, and transmission gears are rotatably connected to both support shafts. The first rack and the second rack mesh with the transmission gears.

[0017] A further configuration of the above technical solution is as follows: the control component includes two first support seats fixedly connected to the base, two second support seats fixedly connected to the base, and a rotating shaft rotatably connected to each of the two first support seats. A turntable is fixedly connected to one end of each of the two rotating shafts, and a linkage pin is fixedly connected to the side of the turntable away from the rotating shaft. A transverse rod is slidably connected to the second support seat in the transverse direction. A knife holder is fixedly connected to one end of the transverse rod, and a cutting knife is mounted on the knife holder. A vertical block is fixedly connected to the other end of the transverse rod. An extrusion groove is formed on the vertical block in the vertical direction, and the linkage pin is located in the extrusion groove.

[0018] A further configuration of the above technical solution is as follows: the control component includes a third motor mounted on a fixed base and a transmission shaft rotatably connected to the fixed base. Both the output shaft of the third motor and the transmission shaft are equipped with linkage gears, and the two linkage gears mesh with each other. The output shaft of the third motor and the transmission shaft are respectively connected to two rotating shafts via a synchronous belt transmission group. A protective box is fixedly connected to the fixed base, and a through groove is provided on the upper surface of the protective box.

[0019] A further configuration of the above technical solution is as follows: the conveying assembly includes an H-shaped support fixedly connected to the base, a fourth motor mounted on the H-shaped support, and a conveyor belt disposed at the opening of the fourth motor. Two conveyor rollers are rotatably connected to the H-shaped support, and both ends of the conveyor belt are mounted on the two conveyor rollers. The output shaft of the fourth motor is mounted on either conveyor roller.

[0020] The beneficial effects achieved by this invention are as follows: Firstly, the bending deformation caused by the coiling of the metal wire is eliminated by the first straightening component. Combined with the radial limiting guide of the straightening hole, the metal wire is ensured to be conveyed along the preset axis. Then, with the help of two sets of sliders on the slide block and the clamping component, the wire-carrying component drives the alternating equal-interval feeding, avoiding feeding interruption when the single feeding structure returns. Furthermore, by controlling the number of rotations of the first motor, the feeding length can be precisely controlled, solving the problem that the existing technology is difficult to meet the high precision requirements of the metal wire length and is prone to finished product size deviation.

[0021] Secondly, the metal wire is straightened a second time by the second straightening component, and the wire outlet is precisely guided to ensure that there is no radial offset in the cutting position of the metal wire. The cutting component drives the two cutting blades to move synchronously towards each other through the control component to complete the cutting. The cutting action is smooth and the stroke is accurate, avoiding the problem of the fixed blade easily jamming the end of the metal wire and affecting the processing efficiency in the existing technology, thus improving the flatness of the cut and the cutting efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional view from one perspective of the present invention; Figure 2 This is a three-dimensional diagram from another perspective of the present invention; Figure 3 This is a three-dimensional view of the present invention after removing the first straightening component; Figure 4 This is a schematic diagram of the clamping assembly of the present invention; Figure 5 This is a three-dimensional view from another perspective after the first straightening component has been removed in this invention; Figure 6 This is a schematic diagram of the cutting component of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the cutting component of the present invention. Figure 2 ; Figure 8 This is a cross-sectional view of the cutting component of the present invention.

[0023] Reference numerals: 1. Base; 2. Slide; 3. Moving groove; 4. Slider; 5. Cable pulling assembly; 51. First motor; 52. Screw; 6. First straightening assembly; 61. Straightening box; 62. First straightening roller; 63. Fixing plate; 64. Straightening hole; 65. Second straightening roller; 7. Clamping assembly; 701. Lower moving plate; 702. Upper moving plate; 703. Clamping plate; 704. Clamping groove; 705. Second cylinder; 706. First guide seat; 707. Second guide seat; 708. First guide rod; 709. First rack; 710. Second guide rod; 711. Second rack; 712. Support shaft; 713. Transmission gear; 8. Cutting assembly; 801. First support base; 802. Rotating shaft; 803. Turntable; 804. Protective box; 805. Through slot; 806. Third motor; 807. Transmission shaft; 808. Linkage gear; 809. Second support base; 810. Horizontal rod; 811. Linkage pin; 812. Vertical block; 813. Extrusion groove; 814. Knife holder; 815. Cutting knife; 9. Conveying assembly; 91. H-type support; 92. Fourth motor; 93. Conveyor belt; 10. Fixed base; 11. Conical cylinder; 12. Outlet; 13. Guide groove; 14. Guide rail; 15. First cylinder. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0025] like Figures 1-8 As shown, a cutting mechanism for producing self-drilling screws includes a base 1, a first straightening assembly 6, a second straightening assembly, a cutting assembly 8, and a conveying assembly 9.

[0026] The first straightening assembly 6, the slide 2, the second straightening assembly, the cutting assembly 8, and the conveying assembly 9 are arranged coaxially on the upper surface of the base 1 from front to back along the feeding direction of the metal wire, ensuring that the metal wire is always on the same horizontal axis during the conveying process, avoiding radial bending and offset, and ensuring feeding accuracy and cutting quality. The metal wire is made of magnesium, copper, or titanium.

[0027] A movable slide 2 is provided on the base 1, and the slide 2 is located between the first straightening component 6 and the second straightening component. Two moving grooves 3 are opened on the upper surface of the slide 2, and sliders 4 are slidably connected in both moving grooves 3. A wire-pulling component 5 is provided on the slide 2 for controlling the movement of the two sliders 4 respectively. A clamping component 7 for clamping the metal wire is provided on both sliders 4, and the two sliders 4 complete the alternating equal-interval feeding through the wire-pulling component 5 and the clamping component 7.

[0028] The second straightening component includes a fixed base 10 fixedly connected to the base 1, a conical cylinder 11 embedded in the fixed base 10, and a cable outlet 12 opened on the conical cylinder 11.

[0029] The inner cavity of the conical cylinder 11 is a conical channel that is wider at the front and narrower at the back. The metal wire fed by the clamping component 7 enters the conical channel from the front end of the conical cylinder 11. After being gradually limited and guided by the conical channel, it precisely passes through the outlet 12 and enters the cutting station of the cutting component 8. The conical channel of the conical cylinder 11 can straighten the metal wire a second time. At the same time, the precision guidance of the outlet 12 can ensure that the cutting position of the metal wire has no radial deviation and ensure the consistency of the cutting length.

[0030] The cutting assembly 8 is located between the second straightening assembly and the conveying assembly 9. The cutting assembly 8 includes two cutting blades 815 and a control component. The control component enables the two cutting blades 815 to move towards each other. The two cutting blades 815 move towards each other to cut the metal wire straightened by the second straightening assembly.

[0031] like Figure 1 and Figure 2 As shown in the figure, in this embodiment, the first straightening assembly 6 includes a straightening box 61, first straightening rollers 62 arranged at equal intervals in the transverse direction, and second straightening rollers 65 arranged at equal intervals in the transverse direction. The first straightening rollers 62 and the second straightening rollers 65 are both rotatably connected inside the straightening box 61. The first straightening rollers 62 and the second straightening rollers 65 are arranged alternately, and the metal wire is located between the first straightening rollers 62 and the second straightening rollers 65. The bottom surface of the straightening box 61 is fixedly connected to the upper surface of the base 1.

[0032] The first straightening roller 62 and the second straightening roller 65 are arranged vertically in an alternating manner to form an S-shaped straightening channel. The metal wire enters from the front opening of the straightening box 61, passes through the S-shaped straightening channel between the first straightening roller 62 and the second straightening roller 65, and exits from the rear opening of the straightening box 61. The metal wire is continuously straightened at multiple points by multiple sets of alternating straightening rollers to eliminate the bending deformation caused by coiling.

[0033] In this embodiment, a fixing plate 63 is fixedly connected to one side of the straightening box 61 near the slide 2. A straightening hole 64 is provided in the middle of the fixing plate 63, and the metal wire is located in the straightening hole 64.

[0034] The inner diameter of the straightening hole 64 is clearance-fitted with the outer diameter of the metal wire. After being preliminarily straightened by the first straightening component 6, the metal wire passes through the straightening hole 64 and enters the subsequent slide 2 and clamping component 7. The straightening hole 64 plays a radial limiting and guiding role for the metal wire, ensuring that the metal wire is always conveyed along the preset axis after passing through the straightening box 61, and avoiding radial sway.

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown in the figure, in this embodiment, a first cylinder 15 is installed on the upper surface of the base 1, at least one guide rail 14 is fixedly connected to the upper surface of the base 1, and a guide groove 13 matching the guide rail 14 is opened on the bottom surface of the slide 2, and the slide 2 is slidably connected to the guide rail 14 through the guide groove 13.

[0036] The extension and retraction of the first cylinder 15 drives the slide block 2 to slide back and forth along the guide rail 14, providing the main drive for long-distance feeding of the metal wire, and enabling the two clamping components 7 to have two positions, namely the clamping position and the waiting position.

[0037] Each set of wire-carrying components 5 is used to independently drive the corresponding slider 4 to move linearly back and forth along the moving groove 3. The two sliders 4, through the independent drive of the two sets of wire-carrying components 5 and the clamping or releasing action of the clamping component 7, complete the alternating equal-interval continuous feeding of the metal wire, avoiding the problem of feeding interruption when the single feeding structure returns, and realizing uninterrupted continuous production.

[0038] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown in the figure, in this embodiment, both cable-carrying assemblies 5 include a first motor 51 mounted on the slide block 2 and a screw 52 rotatably connected in the moving groove 3. The output shaft of the first motor 51 is mounted on the screw 52, ​​and the bottom end of the slider 4 is threadedly connected to the screw 52.

[0039] The forward and reverse rotation of the first motor 51 drives the screw 52 to rotate synchronously, which in turn drives the slider 4 to move back and forth in a straight line along the moving groove 3 through the thread transmission. By controlling the number of rotations of the first motor 51, the moving distance of the slider 4 can be precisely controlled, thereby achieving precise control of the wire feeding length.

[0040] like Figures 1-5 As shown in the figure, in this embodiment, the clamping assembly 7 includes an upper moving plate 702 and a lower moving plate 701 arranged in sequence along the vertical direction. The lower moving plate 701 and the upper moving plate 702 are both fixedly connected to a clamping plate 703 on their sides that are close to each other. The two clamping plates 703 are both provided with clamping grooves 704 on their sides that are close to each other.

[0041] The upper and lower clamping grooves 704 are coaxially arranged, and the axis of the clamping grooves 704 coincides with the conveying axis of the metal wire, ensuring that the metal wire is evenly clamped in the circumference during clamping, avoiding deformation of the metal wire during clamping, and preventing slippage during feeding.

[0042] like Figures 1-5 As shown in the figure, in this embodiment, the clamping assembly 7 further includes a second cylinder 705 mounted on one side of the slider 4, a first guide rod 708 fixedly connected to both ends of the bottom surface of the upper moving plate 702, and a second guide rod 710 fixedly connected to both ends of the bottom surface of the lower moving plate 701. Two sets of first guide seats 706 and two sets of second guide seats 707 are fixedly connected to one side of the slider 4. The bottom end of the first guide rod 708 passes through the lower moving plate 701 and the two first guide seats 706 sequentially and extends below the first guide seats 706. The second guide rod 710... The bottom end of rod 710 passes through two second guide seats 707 in sequence and extends to the bottom of the second guide seats 707. The telescopic end of the second cylinder 705 is installed on the lower moving plate 701. A first rack 709 is installed at the middle end of the first guide rod 708, and a second rack 711 is installed at the middle end of the second guide rod 710. Two support shafts 712 are fixedly connected to the slider 4. A transmission gear 713 is rotatably connected to each of the two support shafts 712. The first rack 709 and the second rack 711 mesh with the corresponding transmission gears 713 respectively.

[0043] When it is necessary to clamp the metal wire, the telescopic end of the second cylinder 705 extends upward, pushing the lower moving plate 701 to move vertically upward. When the lower moving plate 701 moves upward, it drives the second guide rod 710 to move upward synchronously, which in turn drives the second rack 711 to move upward. Through the meshing of the second rack 711 with the transmission gear 713, the transmission gear 713 is driven to rotate. When the transmission gear 713 rotates, it drives the first rack 709 to move vertically downward, which in turn drives the upper moving plate 702 to move vertically downward through the first guide rod 708. This achieves the synchronous movement of the upper moving plate 702 and the lower moving plate 701 towards each other. Finally, the clamping grooves 704 of the upper and lower clamping plates 703 complete the stable clamping of the metal wire.

[0044] When it is necessary to release the metal wire, the telescopic end of the second cylinder 705 retracts downward, pulling the lower moving plate 701 downward, while the upper moving plate 702 moves upward. The upper and lower clamping plates 703 move in opposite directions synchronously, releasing the clamping of the metal wire.

[0045] The gear and rack synchronous transmission structure ensures that the upper and lower clamping plates 703 open and close synchronously, the clamping force is uniform, and the clamping center always coincides with the wire conveying axis, avoiding clamping deviation. At the same time, the clamping and releasing actions respond quickly and are suitable for rapid action switching of alternating feeding.

[0046] In this embodiment, the control component includes two first support seats 801 fixedly connected to the base 1, two second support seats 809 fixedly connected to the base 1, and a rotating shaft 802 rotatably connected to each of the two first support seats 801. A turntable 803 is fixedly connected to one end of each of the two rotating shafts 802. A linkage pin 811 is fixedly connected to the side of the turntable 803 away from the rotating shaft 802. A transverse rod 810 is slidably connected to the second support seat 809. A knife holder 814 is fixedly connected to one end of the transverse rod 810, and a cutting blade 815 is mounted on the knife holder 814. A vertical block 812 is fixedly connected to the other end of the transverse rod 810. An extrusion groove 813 is vertically formed on the vertical block 812, and the linkage pin 811 is located in the extrusion groove 813.

[0047] like Figures 5-8 As shown in the figure, in this embodiment, the control component includes a third motor 806 mounted on the fixed base 10 and a transmission shaft 807 rotatably connected to the fixed base 10. Both the output shaft of the third motor 806 and the transmission shaft 807 are equipped with linkage gears 808, and the two linkage gears 808 mesh with each other. The output shaft of the third motor 806 and the transmission shaft 807 are respectively connected to two rotating shafts 802 through a synchronous belt transmission group. A protective box 804 is fixedly connected to the fixed base 10, and a through groove 805 is opened on the upper surface of the protective box 804.

[0048] Each synchronous belt drive assembly includes a driving synchronous pulley, a driven synchronous pulley, and a synchronous belt. The driving synchronous pulley is fixedly mounted on the drive shaft, and the driven synchronous pulley is fixedly mounted on the rotating shaft 802. The synchronous belt is sleeved between the driving synchronous pulley and the driven synchronous pulley. The driving synchronous pulley on the drive shaft acts as the driving pulley, while the driven synchronous pulley acts as the driven pulley. After the driving pulley rotates, the driven pulley can rotate synchronously with the help of the synchronous belt. Through this transmission structure, when the third motor 806 rotates, it can drive the left and right rotating shafts 802 to rotate synchronously in opposite directions, thereby driving the left and right turntables 803 to rotate synchronously in opposite directions.

[0049] After the metal wire passes through the outlet 12 to the preset cutting length via a fixed-length feeding, the output shaft of the third motor 806 and the transmission shaft 807 rotate synchronously in opposite directions through two meshing linkage gears 808. This, in turn, drives the left and right rotating shafts 802 to rotate synchronously in opposite directions through two sets of synchronous belt transmission groups. The rotating shafts 802 drive the turntable 803 to rotate synchronously. The eccentric linkage pin 811 on the turntable 803 moves in a circular motion with the turntable 803. During the circular motion, the linkage pin 811 slides along the extrusion groove 813 and applies a lateral thrust to the vertical block 812. This, in turn, drives the left and right blade holders 814 to move synchronously towards each other through the horizontal rod 810, so that the two cutting blades 815 approach the metal wire synchronously to complete the cutting of the metal wire. After the cutting is completed, the turntable 803 continues to rotate, and the linkage pin 811 drives the horizontal rod 810 to move in opposite directions. The two cutting blades 815 synchronously reset, waiting for the next cutting action.

[0050] It achieves synchronous movement of two cutting blades 815 towards or away from each other, with smooth cutting action and precise cutting stroke. Furthermore, the cutting action and feeding action can be synchronized through the electronic control system to ensure the accuracy of fixed-length cutting.

[0051] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown in the figure, in this embodiment, the conveying assembly 9 includes an H-shaped support 91 fixedly connected to the base 1, a fourth motor 92 mounted on the H-shaped support 91, and a conveyor belt 93 disposed at the opening of the fourth motor 92. Two conveying rollers are rotatably connected to the H-shaped support 91, and the two ends of the conveyor belt 93 are mounted on the two conveying rollers. The output shaft of the fourth motor 92 is mounted on either of the conveying rollers.

[0052] The rotation of the fourth motor 92 drives the conveyor roller to rotate, which in turn drives the conveyor belt 93 to operate continuously. The upper surface of the conveyor belt 93 is located directly below the cutting station. The cut metal wire segments fall freely onto the upper surface of the conveyor belt 93 and are conveyed to the subsequent deep processing station through the conveyor belt 93, realizing automatic material transfer without manual transfer and improving production continuity.

[0053] like Figures 1-8As shown in the figure, in this embodiment, the first cylinder 15, the first motor 51, the second cylinder 705, the third motor 806, and the fourth motor 92 are all electrically connected to an external programmable controller, i.e., a PLC. The PLC controls the timing and operating parameters of each component through a preset program, thereby achieving fully automated continuous production. Those skilled in the art can flexibly adjust parameters such as feeding length, cutting frequency, and conveying speed by adjusting the PLC program parameters according to actual production needs, to adapt to the production needs of different specifications of self-drilling screws. The adjustment of the PLC program parameters is something that those skilled in the art can do based on existing technology without making creative changes.

[0054] Working principle: First, the coiled metal wire raw material for drilling self-drilling screw production is released, and the end of the metal wire is fed into the straightening box 61 of the first straightening assembly 6. After passing through the S-shaped straightening channel between the first straightening roller 62 and the second straightening roller 65 and completing the initial straightening, it passes out from the straightening hole 64 of the fixed plate 63 and extends backward along the conveying axis.

[0055] Then, the first cylinder 15 is in the retracted state, the slide 2 is at the front limit position of the guide rail 14, the first motor 51 of the two sets of wire pulling components 5 drives the two sliders 4 to be located at the front and rear ends of the two moving slots 3 respectively, the clamping component 7 corresponding to the front slider 4 is activated, the second cylinder 705 extends, drives the upper and lower clamping plates 703 to move towards each other, and clamps the metal wire passing through the straightening hole 64, while the clamping component 7 corresponding to the rear slider 4 is in the released state.

[0056] Subsequently, the first cylinder 15 extends, driving the slide 2 to slide along the guide rail 14 to the rear end, and the metal wire held by the front clamping component 7 is synchronously conveyed to the rear, completing the long-distance main feeding; after the main feeding is completed, the clamping component 7 corresponding to the rear slider 4 is activated to clamp the metal wire, the front clamping component 7 is released, the first cylinder 15 retracts, and drives the slide 2 to reset to the front limit position, completing one main feeding cycle.

[0057] In continuous production, two sets of wire-carrying assemblies 5 and two sets of clamping assemblies 7 work together to complete alternating continuous feeding. When the clamping assembly 7 corresponding to the front slider 4 clamps the metal wire, the first motor 51 drives the screw 52 to rotate, causing the front slider 4 to move backward to complete the feeding action. At the same time, the clamping assembly 7 corresponding to the rear slider 4 releases, and the corresponding first motor 51 drives the rear slider 4 to move forward to reset. When the front slider 4 moves to the rear limit position, the rear clamping assembly 7 clamps the metal wire, the front clamping assembly 7 releases, the front slider 4 resets forward, and the rear slider 4 moves backward to continue the feeding action. By alternating forward and backward movement of the two sets of sliders 4 and alternating clamping and releasing of the clamping assemblies 7, uninterrupted continuous and evenly spaced feeding of the metal wire can be achieved. By controlling the rotation parameters of the first motor 51, the length of each feeding can be precisely controlled to meet the fixed length requirements of drill screw production.

[0058] Then, the metal wire, fed alternately, is continuously conveyed backward and enters the conical cylinder 11 of the second straightening component. After secondary straightening and guidance by the conical channel, it is precisely passed out from the outlet 12 and enters the cutting station of the cutting component 8.

[0059] When the length of the metal wire passing through the outlet 12 reaches the preset cutting length, the feeding action is paused, the third motor 806 of the cutting assembly 8 is started, and the two cutting blades 815 on the left and right move synchronously towards each other to precisely cut the metal wire and obtain a metal wire segment that meets the length requirements.

[0060] Finally, the cut metal wire segments fall freely onto the conveyor belt 93 of the conveying assembly 9. The fourth motor 92 drives the conveyor belt 93 to operate, smoothly conveying the metal wire segments to the subsequent deep processing station of the drill screw, thus completing the entire production process.

Claims

1. A cutting mechanism for producing self-drilling screws, characterized in that, It includes a base (1), a first straightening assembly (6), a second straightening assembly, a cutting assembly (8), and a conveying assembly (9); The base (1) is provided with a movable slide (2), and the slide (2) is located between the first straightening component (6) and the second straightening component. The upper surface of the slide (2) has two moving grooves (3), and a slider (4) is slidably connected in each of the two moving grooves (3). The slide (2) is provided with a wire-pulling component (5) for controlling the movement of the two sliders (4) respectively. The two sliders (4) are provided with a clamping component (7) for clamping the metal wire. The two sliders (4) complete the alternating equal-interval feeding through the wire-pulling component (5) and the clamping component (7). The second straightening component includes a fixed seat (10) fixedly connected to the base (1), a conical cylinder (11) is inlaid on the fixed seat (10), and a wire outlet (12) is provided on the conical cylinder (11). The cutting assembly (8) is located between the second straightening assembly and the conveying assembly (9). The cutting assembly (8) includes two cutting blades (815) and a control component. The control component enables the two cutting blades (815) to move towards each other. The cutting of the metal wire straightened by the second straightening assembly is accomplished by the two cutting blades (815) moving towards each other.

2. The cutting mechanism for producing self-drilling screws according to claim 1, characterized in that: The first straightening assembly (6) includes a straightening box (61), a first straightening roller (62) arranged at equal intervals in the transverse direction, and a second straightening roller (65) arranged at equal intervals in the transverse direction. The first straightening roller (62) and the second straightening roller (65) are rotatably connected inside the straightening box (61). The first straightening roller (62) and the second straightening roller (65) are arranged alternately, and the metal wire is located between the first straightening roller (62) and the second straightening roller (65). The bottom surface of the straightening box (61) is fixedly connected to the upper surface of the base (1).

3. The cutting mechanism for producing self-drilling screws according to claim 2, characterized in that: A fixing plate (63) is fixedly connected to one side of the straightening box (61) near the slide (2). A straightening hole (64) is opened in the middle of the fixing plate (63), and the metal wire is located in the straightening hole (64). The straightening hole (64) is coaxially arranged with the outlet (12).

4. The cutting mechanism for producing self-drilling screws according to claim 1, characterized in that: The upper surface of the base (1) is equipped with a first cylinder (15), and the upper surface of the base (1) is fixedly connected with at least one guide rail (14). The bottom surface of the slide (2) is provided with a guide groove (13) that matches the guide rail (14), and the slide (2) is slidably connected to the guide rail (14) through the guide groove (13).

5. The cutting mechanism for producing self-drilling screws according to claim 1, characterized in that: Both of the aforementioned cable-carrying assemblies (5) include a first motor (51) mounted on a slide (2) and a screw (52) rotatably connected in a moving groove (3). The output shaft of the first motor (51) is mounted on the screw (52), and the bottom end of the slider (4) is threadedly connected to the screw (52).

6. The cutting mechanism for producing self-drilling screws according to claim 1, characterized in that: The clamping assembly (7) includes an upper moving plate (702) and a lower moving plate (701) arranged vertically in sequence. The lower moving plate (701) and the upper moving plate (702) are both fixedly connected to a clamping plate (703) on their sides that are close to each other. The two clamping plates (703) are provided with clamping grooves (704) on their sides that are close to each other.

7. A cutting mechanism for producing self-drilling screws according to claim 6, characterized in that: The clamping assembly (7) further includes a second cylinder (705) mounted on one side of the slider (4), a first guide rod (708) fixedly connected to both ends of the bottom surface of the upper moving plate (702), and a second guide rod (710) fixedly connected to both ends of the bottom surface of the lower moving plate (701). Two sets of first guide seats (706) and two sets of second guide seats (707) are fixedly connected to one side of the slider (4). The bottom end of the first guide rod (708) passes through the lower moving plate (701) and the two first guide seats (706) in sequence and extends to the bottom of the first guide seats (706). The bottom end of the second guide rod (710) The cylinder (705) extends through two second guide seats (707) and extends below them. The telescopic end of the second cylinder (705) is mounted on the lower moving plate (701). A first rack (709) is mounted at the middle end of the first guide rod (708), and a second rack (711) is mounted at the middle end of the second guide rod (710). Two support shafts (712) are fixedly connected to the slider (4). A transmission gear (713) is rotatably connected to each of the two support shafts (712). The first rack (709) and the second rack (711) mesh with the transmission gear (713).

8. A cutting mechanism for producing self-drilling screws according to claim 1, characterized in that: The control component includes two first support seats (801) fixedly connected to the base (1), two second support seats (809) fixedly connected to the base (1), and a rotating shaft (802) rotatably connected to each of the two first support seats (801). A turntable (803) is fixedly connected to one end of each of the two rotating shafts (802). A linkage pin (811) is fixedly connected to the side of the turntable (803) away from the rotating shaft (802). A transverse rod (810) is slidably connected to the second support seat (809) along the transverse direction. A knife holder (814) is fixedly connected to one end of the transverse rod (810), and a cutting knife (815) is installed on the knife holder (814). A vertical block (812) is fixedly connected to the other end of the transverse rod (810). An extrusion groove (813) is opened vertically on the vertical block (812), and the linkage pin (811) is located in the extrusion groove (813).

9. A cutting mechanism for producing self-drilling screws according to claim 8, characterized in that: The control component includes a third motor (806) mounted on a fixed base (10) and a transmission shaft (807) rotatably connected to the fixed base (10). Both the output shaft of the third motor (806) and the transmission shaft (807) are equipped with linkage gears (808), and the two linkage gears (808) mesh with each other. The output shaft of the third motor (806) and the transmission shaft (807) are respectively connected to two rotating shafts (802) via a synchronous belt transmission group. A protective box (804) is fixedly connected to the fixed base (10), and a through groove (805) is provided on the upper surface of the protective box (804).

10. A cutting mechanism for producing self-drilling screws according to claim 1, characterized in that: The conveying assembly (9) includes an H-shaped support (91) fixedly connected to the base (1), a fourth motor (92) mounted on the H-shaped support (91), and a conveyor belt (93) set at the opening of the fourth motor (92). Two conveyor rollers are rotatably connected to the H-shaped support (91), and the two ends of the conveyor belt (93) are mounted on the two conveyor rollers. The output shaft of the fourth motor (92) is mounted on either conveyor roller.

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