Full-automatic high-speed screw thread rolling machine

Abstract

The full-automatic high-speed screw thread rolling machine comprises a machine base, a vibration disc, a discharging mechanism, a feeding mechanism and a thread rolling mechanism, wherein the vibration disc, the discharging mechanism, the feeding mechanism and the thread rolling mechanism are installed on the machine base. The discharging mechanism is provided with two discharging bridges arranged in parallel, and the top of the discharging mechanism is provided with a pressing bar used for limiting. A support driven by a first driving component and two material distributing rods are arranged in the middle of the discharging bridge, and the material distributing rods are arranged on the two sides of the discharging bridge respectively. The first driving component drives the bracket to transversely swing, so that the end parts of the two material distributing rods alternately penetrate through the avoiding holes in the blanking bridge and extend into the gap between the two bridges, and the screw rod blanks in conveying are alternately intercepted; and through alternate action of the two material distributing rods, it is ensured that at least one material distributing rod is located at the intercepting position all the time, and active and orderly single blank separation and release are achieved. The problem that blanks are prone to accumulation and clamping stagnation in the discharging process is effectively solved, continuous and stable feeding in the follow-up procedure is guaranteed, and the overall efficiency and reliability of thread rolling machining are improved.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a fully automatic high-speed screw thread rolling machine. Background Technology

[0002] A screw rolling machine is a common automated device used to process smooth screw blanks into threaded rods. Its basic working principle is as follows: the screw blanks are first oriented and sorted by a vibratory feeder, and then conveyed to the feeding station by a feeding mechanism. The feeding mechanism sequentially pushes the blanks one by one into the processing area between the moving and stationary die plates. During operation, the moving die plate, driven by a drive device, reciprocates linearly, cooperating with the fixed stationary die plate to compress the smooth portion of the blank, forming threads through plastic deformation, thus obtaining the finished screw.

[0003] However, in the above process flow, the feeding mechanism, as a key conveying channel connecting the vibratory feeder and the feeding mechanism, directly affects the smoothness and stability of material supply. In actual operation, the billet is prone to accumulation and compression in the feeding mechanism, which can directly affect subsequent processes.

[0004] When blanks accumulate in the unloading mechanism, the subsequent feeding mechanism will struggle to reliably and stably separate individual blanks. This can lead to feeding failures, extended cycle times, and even machine shutdowns due to jamming, severely impacting the overall production efficiency and rhythm of the machine. Therefore, the problem of blank accumulation in the unloading mechanism in existing technologies has become a prominent bottleneck restricting the automated production efficiency and reliability of screw thread rolling machines. Summary of the Invention

[0005] This invention proposes a fully automatic high-speed screw thread rolling machine, which solves the problems of blank accumulation in the feeding mechanism of existing thread rolling machines, resulting in low automated production efficiency and poor reliability of screw thread rolling machines.

[0006] The technical solution of this invention is implemented as follows:

[0007] This invention provides a fully automatic high-speed screw thread rolling machine, including a vibratory plate, a feeding mechanism, a feeding mechanism and a thread rolling mechanism mounted on a machine base;

[0008] The vibratory feeder is used to orient and sort the screw blanks and output them;

[0009] The feeding mechanism is used to receive the screw blank output by the vibratory feeder and transport it to the inlet of the thread rolling mechanism;

[0010] The feeding mechanism is used to feed the screw blanks output by the unloading mechanism into the inlet of the thread rolling mechanism one by one and intermittently;

[0011] The thread rolling mechanism is used to perform thread rolling on the fed screw blank;

[0012] The feeding mechanism includes two parallel feeding bridges. A pressure gauge is provided at the top center of the two feeding bridges. The vertical distance between the pressure gauge and the top surface of the feeding bridge matches the nut thickness of the screw blank. The distance between the two feeding bridges matches the rod diameter of the screw blank.

[0013] The middle part of the feeding bridge is equipped with a first driving component, a bracket, and two material distribution rods. The two material distribution rods are mounted on the bracket and are located on both sides of the feeding bridge. Each of the two feeding bridges has a first clearance hole for the material distribution rods to pass through. The first driving component is used to drive the bracket to swing laterally, so that the ends of the two material distribution rods alternately pass through the first clearance hole and extend into the gap between the two feeding bridges to alternately intercept the screw blanks on the feeding bridge. The gap between the two material distribution rods is larger than the diameter of a single screw blank. During the alternating operation of the two material distribution rods, at least one material distribution rod is in the interception position.

[0014] Specifically, a first connecting plate is provided on one side of the feeding bridge, and the bracket is rotatably mounted on the first connecting plate via a pin. The end of the telescopic rod of the first driving component is rotatably connected to one end of the bracket, which is used to drive the bracket to swing back and forth around the pin, so as to drive the two distributing rods to reciprocate together. The distributing rod is "L" shaped, and the hooks of the two distributing rods are arranged one in front of the other along the billet conveying direction.

[0015] Specifically, the thread rolling mechanism includes a second driving component, a pulley, a pinion, a large gear, an eccentric disk, a connecting rod, a first slider, a movable toothed plate, and a stationary toothed plate. The pulley and the pinion are coaxial, the large gear meshes with the pinion, and the eccentric disk is connected to the main shaft of the large gear. One end of the connecting rod is connected to the eccentric shaft on the end face of the eccentric disk, and the other end is connected to the first slider. The movable toothed plate is mounted on the first slider, and the stationary toothed plate is mounted on the base and located on the opposite side of the movable toothed plate. The second driving component drives the pulley to rotate, which in turn drives the eccentric disk to rotate via the pinion and large gear. This, in turn, drives the first slider to slide back and forth on the base via the connecting rod, so as to cooperate with the stationary toothed plate to perform thread rolling on the fed screw blank.

[0016] Preferably, the main shaft has a cam at one end away from the eccentric disk, and a rocker arm is rotatably mounted on one side of the base via a first hinge support. One end of the rocker arm has a guide wheel that matches the cam profile, and the other end of the rocker arm has a push rod. The push rod constitutes the driving component of the feeding mechanism. A first compression spring is connected between the end of the rocker arm near the push rod and the base. The first compression spring is used to force the rocker arm to return to its original position so that the guide wheel is always in contact with the curved surface of the cam.

[0017] Furthermore, the feeding mechanism includes a slide block, a second slider, a push rod, a second compression spring, and a push plate. The second slider is slidably mounted on the slide block, and the push plate is mounted on the front end of the second slider. The end of the push rod away from the swing arm passes through the machine base and connects to the second slider. The second compression spring is installed between the second slider and the slide block. The second slider is driven by the second compression spring to move the push plate toward the outlet direction of the feed bridge, pushing the single screw blank output by the feed bridge into the inlet of the thread rolling mechanism. Under the action of the cam, the push rod drives the second slider to move the push plate back to its original position.

[0018] Furthermore, one end of the slide is provided with a side plate, a guide rod is fixedly installed on the side plate, the end face of the second slider is provided with a second clearance hole for the guide rod to pass through, and the second compression spring is sleeved on the outside of the guide rod.

[0019] Furthermore, both ends of the guide rod are threaded, with its front end threadedly connected to the second slider, and its tail end penetrating the side plate and having two nuts installed thereon.

[0020] Furthermore, a third slider is slidably mounted on the slide block, and the front end of the third slider is connected to a baffle plate via a second connecting plate. The second connecting plate and the third slider are connected via a slotted hole and screws. A lever is rotatably mounted on the slide block, with one end connected to the third slider and the other end connected to the second slider. The lever is configured to drive the baffle plate to retract when the push plate extends, and to drive the baffle plate to extend when the push plate retracts. The extension and retraction cycle of the push plate and the baffle plate matches the reciprocating sliding cycle of the moving toothed plate.

[0021] Furthermore, the top surface of the second slider is provided with a second hinge support, and a rotating handle is rotatably mounted on the second hinge support. A sliding pin is provided at one end of the lever located on the second slider, and a push rod is mounted on the rotating handle. The end of the push rod abuts against the sliding pin. By rotating the rotating handle, the push rod and the sliding pin can be switched between the two states of abutment and separation. A fixing pin is provided on the second slider, and the fixing pin is connected to the sliding pin by a tension spring. The tension spring is used to force the lever to rotate in the direction of extending the drive plate.

[0022] Furthermore, the push rod is a screw rod, and the rotating handle has a screw hole that matches the push rod.

[0023] Furthermore, the front ends of both the push plate and the baffle plate are pointed structures.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention cleverly uses a material distribution rod mechanism driven by a drive component and capable of lateral swing in the middle of the feeding bridge to actively intercept and release the billet on the feeding bridge by alternating reciprocating motion of two material distribution rods, effectively preventing the billet from accumulating and jamming in the feeding channel, fundamentally solving the problems of low production efficiency and poor reliability caused by poor material supply in the prior art, and realizing high-speed and stable wire rolling processing; (2) The thread rolling mechanism of the present invention uses a motor-driven pulley, and the speed is reduced and the torque is increased through the meshing of the small gear and the large gear. Finally, the rotational motion is converted into the high-frequency, stable reciprocating linear motion of the moving tooth plate through the eccentric disc-linkage mechanism. The transmission chain structure is compact and can provide sufficient and stable power for thread rolling, which is the basis for realizing high-speed and high-quality thread rolling processing. By integrating a cam on the main shaft and using components such as rocker arms and springs to synchronously convert the rotational motion of the main shaft into the reciprocating motion of the feeding push rod, the feeding action and the thread rolling stroke of the moving tooth plate are automatically matched. This mechanical linkage design ensures the precise synchronization of feeding and thread rolling under high-speed operation, without the need for additional independent drive and control, simplifying the overall structure and improving the coordination and timing accuracy of the action; (3) The feeding mechanism of the present invention uses a compression spring as the pushing power source and uses a cam linkage mechanism to drive the push rod to achieve reset. This design utilizes the energy storage characteristics of the spring to achieve a fast and gentle pushing action, and at the same time achieves reset through mechanical linkage. The structure is simple and reliable, and the response speed is fast, making it particularly suitable for high-speed intermittent feeding conditions. (4) By setting up a baffle plate and lever mechanism that are linked with the push plate, the movement cycle of the baffle plate is opposite to that of the push plate and matches the cycle of the moving tooth plate. When pushing the material, the baffle plate retracts to make way for the passage, and when the push plate is reset, the baffle plate extends to intercept the subsequent blanks, which effectively prevents the blanks from accidentally entering the processing area during the reset process of the feeding mechanism, and avoids equipment interference and processing failure; (5) By setting up a switching mechanism consisting of a handle, a push rod, a sliding pin, and a tension spring, the present invention allows the operator to easily switch the working state of the baffle plate (linked or always extended). This provides great operational flexibility for special situations such as equipment debugging and shutdown, and improves the maintainability and applicability of the equipment. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1This is a schematic diagram of the overall structure of a fully automatic high-speed screw thread rolling machine according to the present invention.

[0027] Figure 2 This is a schematic diagram of the installation structure of the material distribution rod in an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the material distribution principle of the material distribution rod in an embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of the arrangement structure of the wire rolling mechanism in an embodiment of the present invention.

[0030] Figure 5 This is a schematic diagram of the assembly structure of the cam and the rocker arm in an embodiment of the present invention.

[0031] Figure 6 This is an assembly structure diagram of the feeding mechanism in an embodiment of the present invention.

[0032] Figure 7 This is a schematic diagram of the feeding mechanism in an embodiment of the present invention.

[0033] Figure 8 This is a schematic diagram of the feeding mechanism in an embodiment of the present invention.

[0034] In the diagram: 1. Machine base; 2. Vibratory feeder; 3. Feeding mechanism; 4. Feeding mechanism; 5. Thread rolling mechanism; 6. Feeding bridge; 7. Pressure gauge; 8. First drive component; 9. Bracket; 10. Dividing rod; 11. First clearance hole; 12. First connecting plate; 13. Pin; 14. Second drive component; 15. Pulley; 16. Pinion; 17. Gear; 18. Eccentric disc; 19. Connecting rod; 20. First slider; 21. Moving tooth plate; 22. Stationary tooth plate; 23. Cam ; 24. First hinge support; 25. Rocker arm; 26. Guide wheel; 27. Push rod; 28. First compression spring; 29. ​​Slide block; 30. Second slider; 31. Push plate; 32. Side plate; 33. Guide rod; 34. Second clearance hole; 35. Third slider; 36. Material blocking plate; 37. Lever; 38. Second hinge support; 39. Rotary handle; 40. Sliding pin; 41. Top rod; 42. Fixing pin; 43. Tension spring; 44. Nut; 45. Second connecting plate; 46. Waist-shaped hole. Detailed Implementation

[0035] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0036] Reference Figures 1 to 8The present invention provides a fully automatic high-speed screw thread rolling machine, including a vibratory plate 2, a feeding mechanism 3, a feeding mechanism 4 and a thread rolling mechanism 5 mounted on a machine base 1;

[0037] The vibratory plate 2 is used to orient and sort the screw blanks and output them;

[0038] The feeding mechanism 3 is used to receive the screw blank output by the vibratory feeder 2 and transport it to the inlet of the thread rolling mechanism 5;

[0039] The feeding mechanism 4 is used to feed the screw blanks output by the unloading mechanism 3 into the inlet of the thread rolling mechanism 5 one by one and intermittently.

[0040] The thread rolling mechanism 5 is used to perform thread rolling on the fed screw blank;

[0041] like Figure 2 , 3 As shown, the feeding mechanism 3 includes two parallel feeding bridges 6. A pressure gauge 7 is provided at the top center of the two feeding bridges 6. The vertical distance between the pressure gauge 7 and the top surface of the feeding bridge 6 matches the nut thickness of the screw blank. The distance between the two feeding bridges 6 matches the rod diameter of the screw blank.

[0042] The middle part of the feeding bridge 6 is equipped with a first driving component 8 (such as a cylinder), a bracket 9, and two material distribution rods 10. The two material distribution rods 10 are mounted on the bracket 9 and are located on both sides of the feeding bridge 6. Each of the two feeding bridges 6 has a first clearance hole 11 for the material distribution rods 10 to pass through. The first driving component 8 is used to drive the bracket 9 to swing laterally, so that the ends of the two material distribution rods 10 alternately pass through the first clearance hole 11 and extend into the gap between the two feeding bridges 6 to alternately intercept the screw blanks on the feeding bridge 6. The gap between the two material distribution rods 10 is larger than the diameter of a single screw blank. During the alternating operation of the two material distribution rods 10, at least one material distribution rod 10 is in the interception position.

[0043] This invention utilizes a laterally swinging material distribution rod 10 mechanism, driven by a first driving component 8, located in the middle of the feeding bridge 6. The alternating reciprocating motion of the two material distribution rods 10 dynamically constructs a "single-piece release gate" in the middle of the feeding channel. When one of the material distribution rods 10 extends into the gap, it physically intercepts the subsequent billet flow; when it retracts, it releases the foremost billet, ensuring that at any given time, at least one material distribution rod 10 is in an intercepting state, thereby forcibly streamlining the potentially congested billet flow into single, orderly, and intermittently released pieces. Figure 3 In the diagram, (a) shows the initial position of the two material distribution rods 10, (b) shows the position of the two material distribution rods 10 after the support 9 swings to the left, and (c) shows the position of the two material distribution rods 10 after the support 9 swings to the right. Figure 3The "circle" in the diagram represents the screw blank; this active material distribution method effectively prevents the blank from getting stuck at the end of the conveying process due to accumulation and compression, providing a stable and reliable single-piece material supply guarantee for subsequent feeding and thread rolling processes, which is the key to achieving fully automatic high-speed operation.

[0044] Specifically, such as Figure 2 As shown, a first connecting plate 12 is provided on one side of the feeding bridge 6. The bracket 9 is rotatably mounted on the first connecting plate 12 via a pin 13. The end of the telescopic rod of the first driving component 8 is rotatably connected to one end of the bracket 9, which is used to drive the bracket 9 to swing back and forth around the pin 13, so as to drive the two material distribution rods 10 to reciprocate together. The material distribution rods 10 are "L" shaped, and the hooks of the two material distribution rods 10 are arranged one in front of the other along the blank conveying direction.

[0045] In this embodiment, the "L"-shaped material distribution rod 10 is designed so that its vertical part can be stably connected to the bracket 9, while its horizontal part (hook) serves as the effective working end. The hooks of the two material distribution rods 10 are arranged one in front of the other, so that their working ends can alternately cover the material distribution area when they swing. When the rear material distribution rod 10 retracts to release the billet, the front material distribution rod 10 has already extended in advance to intercept the next batch of billets. The two actions are precisely connected in time and space, avoiding dead zones in material distribution and ensuring the continuity and reliability of the material distribution action. The entire drive and execution mechanism is compact in structure, efficiently converting the linear motion of the first drive component 8 into the precise swing trajectory of the material distribution rod 10, and operating stably.

[0046] Specifically, such as Figure 4 As shown, the thread rolling mechanism 5 includes a second drive component 14, a pulley 15, a pinion 16, a gear 17, an eccentric disk 18, a connecting rod 19, a first slider 20, a movable tooth plate 21, and a stationary tooth plate 22. The pulley 15 is coaxial with the pinion 16, the gear 17 meshes with the pinion 16, and the eccentric disk 18 is connected to the main shaft of the gear 17. One end of the connecting rod 19 is connected to the eccentric shaft on the end face of the eccentric disk 18, and the other end is connected to the first slider 20. The movable tooth plate 21 is mounted on the first slider 20, and the stationary tooth plate 22 is mounted on the base and located on the opposite side of the movable tooth plate 21. The second drive component 14 drives the pulley 15 to rotate, which in turn drives the eccentric disk 18 to rotate via the pinion 16 and the gear 17. This, in turn, drives the first slider 20 to slide back and forth on the base via the connecting rod 19, so as to cooperate with the stationary tooth plate 22 to perform thread rolling on the fed screw blank.

[0047] In this embodiment, the second drive component 14 (such as a motor) is driven by a belt, providing buffering and overload protection. The meshing of the pinion 16 and the large gear 17 forms a first-stage reduction, significantly increasing the output torque and meeting the high torque requirements for thread rolling. The combination of the eccentric disc 18 and the connecting rod 19 converts the continuous rotation of the main shaft into the linear reciprocating motion of the first slider 20 (and the moving tooth plate 21). This conversion method results in a higher speed for the moving tooth plate 21 in the middle of the thread rolling stroke, while the speed is relatively slow at the moment of contact with the blank and in the thread rolling forming section. This motion characteristic is beneficial for the smooth forming of the thread and improves the processing quality. The entire mechanism has a high degree of integration, and the power transmission is smooth and reliable, laying a solid foundation for high-speed thread rolling.

[0048] Preferably, such as Figure 5 , 6 As shown, a cam 23 is provided at one end of the main shaft away from the eccentric disk 18. A rocker arm 25 is rotatably mounted on one side of the base via a first hinge support 24. One end of the rocker arm 25 is provided with a guide wheel 26 that matches the contour of the cam 23, and the other end of the rocker arm 25 is provided with a push rod 27. The push rod 27 constitutes the driving component of the feeding mechanism 4. A first compression spring 28 is connected between the end of the rocker arm 25 near the push rod 27 and the base. The first compression spring 28 is used to force the rocker arm 25 to return to its original position, so that the guide wheel 26 is always in contact with the curved surface of the cam 23.

[0049] In this embodiment, the cam 23 is fixed on the main shaft of the thread rolling mechanism 5, and its contour curve is specially designed to strictly correspond to the movement phase of the moving tooth plate 21. When the moving tooth plate 21 completes one thread rolling cycle and begins to retract and reset, the contour of the cam 23 releases the pressure on the rocker arm 25. At this time, the restoring force of the first compression spring 28 drives the rocker arm 25 to swing, thereby pushing the push rod 27 to perform the "feed extension" action. Subsequently, when the moving tooth plate 21 retracts to the farthest point and begins to move forward for the next thread rolling stroke, the blank to be processed is accurately pushed into the vacated thread rolling inlet; the protruding part of the cam 23 pushes the guide wheel 26 on the rocker arm 25, overcoming the force of the first compression spring 28, forcing the rocker arm 25 to swing in the opposite direction, thereby pulling the push rod 27 to perform the "reset retraction" action, so that the feeding mechanism 4 quickly retracts to prepare for the next feeding. This design precisely limits the feeding action to the brief time window when the moving tooth plate 21 leaves the thread rolling cavity and the inlet is completely open, achieving seamless connection and absolute synchronization of the two processes at high speed. It eliminates the need for independent sensors and controllers, greatly improving the timing accuracy, reliability and response speed of the system.

[0050] Furthermore, such as Figure 6 , 7As shown, the feeding mechanism 4 includes a slide block 29, a second slider 30, a push rod 27, a second compression spring, and a push plate 31. The second slider 30 is slidably mounted on the slide block 29. The push plate 31 is mounted on the front end of the second slider 30. The end of the push rod 27 away from the swing rod 25 passes through the machine base 1 and is connected to the second slider 30. The second compression spring is installed between the second slider 30 and the slide block 29. The second slider 30 is driven by the second compression spring to move the push plate 31 toward the outlet direction of the feed bridge 6, pushing the single screw blank output by the feed bridge 6 into the inlet of the thread rolling mechanism 5. The push rod 27 drives the second slider 30 to move the push plate 31 back to its original position under the action of the cam 23.

[0051] In this embodiment, the "spring-powered propulsion and mechanical linkage reset" mode of the feeding mechanism 4 is key to its efficient operation. The first compression spring 28 (acting on the swing arm 25) and the second compression spring (acting on the second slider 30) are both configured as power sources to drive the push plate 31 to extend, jointly ensuring a powerful and rapid feeding action. When the swing arm 25 pushes the push rod 27 under the action of the first compression spring 28, the push rod 27 transmits power to the second slider 30, while the second compression spring also releases its elasticity. Both work together to drive the second slider 30 and the push plate 31 to complete the feeding action at high speed. When reset is required, the aforementioned cam 23 forcibly pulls the push rod 27 through the swing arm 25, overcoming the forces of the two springs, and drives the second slider 30 and the push plate 31 to accurately and quickly retract to the initial position. This structure utilizes the synergistic effect of multiple springs and mechanical linkage to achieve high explosive power, fast response, and high reliability in the feeding action.

[0052] Furthermore, such as Figure 6 , 7 As shown, one end of the slide block 29 is provided with a side plate 32, on which a guide rod 33 is fixedly installed. The end face of the second slider 30 is provided with a second clearance hole 34 for the guide rod 33 to pass through. The second compression spring is sleeved on the outside of the guide rod 33. Sleeving the second compression spring on the guide rod 33 not only facilitates the positioning and installation of the spring, but more importantly, avoids the bending or instability that may occur when the spring is compressed, ensuring that its elastic force is efficiently transmitted in a straight line, thereby ensuring the straightness and repeatability of the feeding trajectory of the push plate 31 and improving the stability of the feeding.

[0053] Furthermore, both ends of the guide rod 33 are threaded, with its front end threadedly connected to the second slider 30, and its rear end penetrating the side plate 32 and fitted with two nuts 44. The nuts 44 serve as a safety feature, preventing damage to parts caused by the compression spring driving the second slider 30 to extend the push plate 31 and impact the moving toothed plate 21 if the cam 23 fails to engage with the guide wheel 26. The nuts 44 mainly limit the extension stroke of the push plate 31, and the double nuts act as an "anti-disengagement" mechanism, preventing the nuts from falling off due to vibration.

[0054] Furthermore, such as Figure 7 , 8 As shown, a third slider 35 is slidably mounted on the slide block 29. A baffle plate 36 is connected to the front end of the third slider 35. The baffle plate 36 is located outside the push plate 31, and the distance between the baffle plate 36 and the push plate 31 is adjustable (the distance between the baffle plate 36 and the push plate 31 can be adjusted according to the diameter of the screw blank, thereby adapting to blanks of different diameters). In this embodiment, the third slider 35 and the baffle plate 36 are connected by a second connecting plate 45. One end of the second connecting plate 45 connected to the third slider 35 is provided with an oblong hole 46. The second connecting plate 45 and the third slider 35 are connected by screws. The distance between the baffle plate 36 and the third slider 35 can be flexibly adjusted using the oblong hole 46, thereby adjusting the distance between the baffle plate 36 and the push plate 31.

[0055] In this embodiment, a lever 37 is rotatably mounted on the slide block 29. One end of the lever 37 is connected to the third slider 35, and the other end is connected to the second slider 30. The lever 37 is configured to drive the baffle plate 36 to retract when the push plate 31 extends, and to drive the baffle plate 36 to extend when the push plate 31 retracts. The extension and retraction cycle of the push plate 31 and the baffle plate 36 matches the reciprocating sliding cycle of the moving toothed plate 21. By setting a baffle plate 36 and lever 37 mechanism that are linked to the push plate 31, the movement cycle of the baffle plate 36 is opposite to that of the push plate 31 and matches the cycle of the moving toothed plate 21. When pushing material, the baffle plate 36 retracts to make way for the subsequent billet to reach one side of the push plate 31, such as... Figure 8 As shown in (a), when the pusher plate 31 resets, the baffle plate 36 extends to intercept subsequent billets, as... Figure 8 As shown in (b), Figure 8 In the diagram, the "circle" represents the screw blank; this effectively prevents the blank from accidentally entering the processing area during the reset process of the feeding mechanism 4, thus avoiding equipment interference and processing failures.

[0056] Furthermore, such as Figure 7As shown, the top surface of the second slider 30 is provided with a second hinge support 38, and a rotating handle 39 is rotatably mounted on the second hinge support 38. The lever 37 is provided with a sliding pin 40 at one end of the second slider 30. A push rod 41 is mounted on the rotating handle 39, and the end of the push rod 41 abuts against the sliding pin 40. By rotating the rotating handle 39, the push rod 41 and the sliding pin 40 can be switched between abutting and separating states. The second slider 30 is provided with a fixing pin 42, and the fixing pin 42 is connected to the sliding pin 40 by a tension spring 43. The tension spring 43 is used to force the lever 37 to rotate in the direction of driving the material blocking plate 36 to extend. When the push rod 41 rotates to abut against the sliding pin 40, the lever 37 and the second slider 30 maintain a normal linkage relationship. At this time, the material blocking plate 36 and the push plate 31 are in the aforementioned automatic linkage mode, that is, when the push plate 31 extends, the material blocking plate 36 retracts, and when the push plate 31 retracts, the material blocking plate 36 extends. When the push rod 41 is rotated to separate from the sliding pin 40, the lever 37 is forcibly pulled to a fixed angle under the action of the tension spring 43, thereby keeping the baffle plate 36 stably in the "normally extended" blocking state. This mode is suitable for manually interrupting the material supply flow to prevent the billet from continuing to enter when the equipment is stopped, maintained, or for specific debugging needs. The tension spring 43 provides a stable holding force for the baffle plate 36 in the "normally extended" mode.

[0057] Furthermore, the push rod 41 is a screw, and the rotating handle 39 has a screw hole that matches the push rod 41. By rotating this screw-type push rod 41, its length extending out of the rotating handle 39 can be finely adjusted, thereby precisely adjusting the position of the push rod 41 on the sliding pin 40 when it is in the abutting state. This design allows the operator to finely adjust the initial linkage angle of the lever 37, and thus finely adjust and calibrate the extension and retraction endpoints of the baffle plate 36 in automatic linkage mode. This enhances the adaptability of the equipment to different specifications of blanks or after mechanical wear, and improves the debugging accuracy and overall process flexibility.

[0058] Furthermore, such as Figure 8 As shown, the front ends of the push plate 31 and the baffle plate 36 are both pointed structures, which can reduce the resistance and interference when they come into contact with and separate from the billet, making the pushing and baffle actions smoother and more reliable, further reducing the risk of jamming, and ensuring the smoothness of high-speed continuous operation.

[0059] The working process of the thread rolling machine of this invention is as follows:

[0060] Sorting and conveying: After the screw blanks are oriented and sorted in the vibratory feeder 2, they enter the two parallel feeding bridges 6 in sequence. The rods of the blanks fall into the gap between the feeding bridges 6, while the nuts are restricted by the pressure gauge 7 at the top, thus ensuring stable conveying to the feeding station.

[0061] Dynamic material distribution: When the billet flow reaches the distribution station in the middle of the discharge bridge 6, the two L-shaped distribution rods 10 driven by the first drive unit 8 are oscillating alternately at high speed. When the front distribution rod 10 extends into the gap between the bridges, it intercepts the subsequent billet; at the same time, the rear distribution rod 10 retracts, releasing the billet that was previously intercepted (i.e., the billet that was previously located between the two distribution rods 10), allowing it to slide down to the push position at the outlet of the discharge bridge 6. Immediately afterwards, the front distribution rod 10 retracts, and at the same time, the rear distribution rod 10 extends, completing the aforementioned alternating process again, and then releasing the next billet. This process is repeated, buffering the billet discharge on the discharge bridge 6 and preventing billet accumulation at the end of the discharge bridge 6.

[0062] Linked feeding and blocking: The main shaft of the thread rolling mechanism 5 rotates continuously. When the moving tooth plate 21 completes one thread rolling cycle and begins to retract, the profile of the cam 23 on the main shaft changes, releasing the pressure on the rocker arm 25. At this time, the first compression spring 28 drives the rocker arm 25 to swing, pushing the push rod 27; simultaneously, the second compression spring in the feeding mechanism 4 also releases its elastic force. Both together drive the second slider 30 and the push plate 31 to move forward at high speed. When the moving tooth plate 21 retracts to the inlet position to prepare for the next thread rolling action, the push plate 31 precisely pushes the next blank into the inlet that has been cleared between the moving tooth plate 21 and the stationary tooth plate 22. While the push plate 31 moves forward to feed the material, the blocking plate 36 automatically retracts to completely clear the channel through the linkage of the lever 37, allowing the next blank to be rolled to slide to the side of the push plate 31.

[0063] Thread rolling: After the blank is in place, the moving tooth plate 21 moves forward under the drive of the main shaft (through the eccentric disk 18 and connecting rod 19), and works with the stationary tooth plate 22 to squeeze the blank rod to form threads.

[0064] Reset and preparation for the next cycle: As the moving tooth plate 21 begins its thread rolling motion, the protruding part of the cam 23 pushes the rocker arm 25, overcoming the force of the first compression spring 28, and pulls the push rod 27 to reset. The push rod 27 drives the second slider 30 to compress the second compression spring, causing the push plate 31 to retract quickly. Simultaneously with the retraction of the push plate 31, the lever 37, under the action of the tension spring 43, immediately drives the stop plate 36 to extend rapidly, intercepting subsequent blanks. Thus, a complete work cycle ends, and the machine immediately enters the next high-speed, synchronous cycle.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully automatic high-speed screw thread rolling machine, characterized in that, It includes a vibratory plate (2) mounted on a base (1), a feeding mechanism (3), a feeding mechanism (4), and a wire rolling mechanism (5); The vibratory plate (2) is used to orient and sort the screw blanks and output them; The feeding mechanism (3) is used to receive the screw blank output by the vibratory plate (2) and transport it to the inlet of the thread rolling mechanism (5); The feeding mechanism (4) is used to feed the screw blanks output by the unloading mechanism (3) into the inlet of the thread rolling mechanism (5) one by one and intermittently; The thread rolling mechanism (5) is used to perform thread rolling on the fed screw blank; The feeding mechanism (3) includes two parallel feeding bridges (6), and a pressure gauge (7) is provided at the top center of the two feeding bridges (6). The vertical distance between the pressure gauge (7) and the top surface of the feeding bridge (6) matches the nut thickness of the screw blank, and the distance between the two feeding bridges (6) matches the rod diameter of the screw blank. The middle part of the feeding bridge (6) is equipped with a first driving component (8), a bracket (9) and two dividing rods (10). The two dividing rods (10) are mounted on the bracket (9) and are located on both sides of the feeding bridge (6). The two feeding bridges (6) are provided with first clearance holes (11) for the dividing rods (10) to pass through. The first driving component (8) is used to drive the bracket (9) to swing laterally, so that the ends of the two dividing rods (10) alternately pass through the first clearance holes (11) and extend into the gap between the two feeding bridges (6) to alternately intercept the screw blanks on the feeding bridge (6). The gap between the two dividing rods (10) is larger than the diameter of a single screw blank. During the alternating action of the two dividing rods (10), at least one dividing rod (10) is in the interception position.

2. The fully automatic high-speed screw thread rolling machine as described in claim 1, characterized in that, The feeding bridge (6) has a first connecting plate (12) on one side. The bracket (9) is rotatably mounted on the first connecting plate (12) via a pin (13). The end of the telescopic rod of the first driving component (8) is rotatably connected to one end of the bracket (9) to drive the bracket (9) to swing back and forth around the pin (13) so as to drive the two distributing rods (10) to reciprocate together. The distributing rods (10) are "L" shaped, and the hooks of the two distributing rods (10) are arranged one in front of the other along the billet conveying direction.

3. The fully automatic high-speed screw thread rolling machine as described in claim 1, characterized in that, The thread rolling mechanism (5) includes a second drive component (14), a pulley (15), a pinion (16), a large gear (17), an eccentric disk (18), a connecting rod (19), a first slider (20), a moving tooth plate (21), and a stationary tooth plate (22). The pulley (15) is coaxial with the pinion (16), the large gear (17) meshes with the pinion (16), and the eccentric disk (18) is connected to the main shaft of the large gear (17). One end of the connecting rod (19) is connected to the eccentric shaft on the end face of the eccentric disk (18). The first end is connected to the second end, and the second end is connected to the first slider (20). The movable tooth plate (21) is installed on the first slider (20), and the stationary tooth plate (22) is installed on the base and located on the opposite side of the movable tooth plate (21). The pulley (15) is driven to rotate by the second drive component (14), and the eccentric disk (18) is driven to rotate by the small gear (16) and the large gear (17), thereby driving the first slider (20) to slide back and forth on the base through the connecting rod (19) to cooperate with the stationary tooth plate (22) to perform thread rolling on the fed screw blank.

4. The fully automatic high-speed screw thread rolling machine as described in claim 3, characterized in that, The main shaft is provided with a cam (23) at one end away from the eccentric disk (18). A rocker arm (25) is rotatably mounted on one side of the base via a first hinge support (24). One end of the rocker arm (25) is provided with a guide wheel (26) that matches the contour of the cam (23). The other end of the rocker arm (25) is provided with a push rod (27). The push rod (27) constitutes the driving component of the feeding mechanism (4). A first compression spring (28) is connected between the end of the rocker arm (25) near the push rod (27) and the base. The first compression spring (28) is used to force the rocker arm (25) to return to its original position so that the guide wheel (26) is always in contact with the curved surface of the cam (23).

5. The fully automatic high-speed screw thread rolling machine as described in claim 4, characterized in that, The feeding mechanism (4) includes a slide (29), a second slider (30), a push rod (27), a second compression spring, and a push plate (31). The second slider (30) is slidably mounted on the slide (29). The push plate (31) is mounted on the front end of the second slider (30). The end of the push rod (27) away from the swing rod (25) passes through the machine base (1) and is connected to the second slider (30). The second compression spring is installed between the second slider (30) and the slide (29). The second slider (30) is driven by the second compression spring to move the push plate (31) toward the outlet direction of the feed bridge (6), pushing the single screw blank output by the feed bridge (6) into the inlet of the thread rolling mechanism (5). The push rod (27) drives the second slider (30) to move the push plate (31) back to its original position under the action of the cam (23).

6. The fully automatic high-speed screw thread rolling machine as described in claim 5, characterized in that, One end of the slide block (29) is provided with a side plate (32), and a guide rod (33) is fixedly installed on the side plate (32). The end face of the second slider (30) is provided with a second clearance hole (34) for the guide rod (33) to pass through. The second compression spring is sleeved on the outside of the guide rod (33).

7. The fully automatic high-speed screw thread rolling machine as described in claim 6, characterized in that, Both ends of the guide rod (33) are threaded, and its front end is threaded to the second slider (30), and its tail end passes through the side plate (32) and is fitted with two nuts (44).

8. The fully automatic high-speed screw thread rolling machine as described in claim 5, characterized in that, A third slider (35) is slidably mounted on the slide block (29). The front end of the third slider (35) is connected to a baffle plate (36) through a second connecting plate (45). The second connecting plate (45) and the third slider (35) are connected through a waist-shaped hole (46) and screws. A lever (37) is rotatably mounted on the slide block (29). One end of the lever (37) is connected to the third slider (35), and the other end is connected to the second slider (30). The lever (37) is configured to drive the baffle plate (36) to retract when the push plate (31) extends, and drive the baffle plate (36) to extend when the push plate (31) retracts. The extension and retraction cycle of the push plate (31) and the baffle plate (36) matches the reciprocating sliding cycle of the moving tooth plate (21).

9. A fully automatic high-speed screw thread rolling machine as described in claim 8, characterized in that, The second slider (30) has a second hinge support (38) on its top surface. A handle (39) is rotatably mounted on the second hinge support (38). A sliding pin (40) is provided at one end of the lever (37) on the second slider (30). A push rod (41) is mounted on the handle (39). The end of the push rod (41) abuts against the sliding pin (40). By rotating the handle (39), the push rod (41) and the sliding pin (40) can be switched between abutting and separating states. A fixing pin (42) is provided on the second slider (30). The fixing pin (42) and the sliding pin (40) are connected by a tension spring (43). The tension spring (43) is used to force the lever (37) to rotate in the direction of the extension of the drive baffle plate (36).

10. A fully automatic high-speed screw thread rolling machine as described in claim 8, characterized in that, The push rod (41) is a screw rod, and the handle (39) has a screw hole that matches the push rod (41).

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