Fastener internal thread rolling machine and machining process

Abstract

The invention relates to the technical field of internal thread rolling, and provides a fastener internal thread rolling machine and a machining technology.The fastener internal thread rolling machine comprises a mounting machine box, a lifting ram is arranged on the mounting machine box, a thread rolling driving mechanism is arranged on the lifting ram in a longitudinal sliding mode, and an extrusion tap is arranged on the thread rolling driving mechanism; the device further comprises a two-way feeding structure and lateral material receiving structures, the two-way feeding structure with an upper clamping area and a lower clamping area is arranged in the installation machine box, the two clamped fasteners are driven to move to the bottom of the extrusion tap in sequence, and the lateral material receiving structures are arranged on the two sides of the two-way feeding structure. The lateral material receiving structure is used for taking out the machined fasteners from the bidirectional feeding structure, and the bidirectional feeding structure and the lateral material receiving structure are turned over synchronously. By means of the technical scheme, the problem that in the prior art, when a thread rolling machine conducts internal thread machining on a fastener, the machining speed of the thread rolling machine is not convenient to exert is solved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of internal thread rolling technology, specifically to a fastener internal thread rolling machine and processing technology. Background Technology

[0002] Fasteners are metal components used to securely connect two objects. They are commonly used in the installation of mechanical equipment. Common fasteners include nuts, bolts, studs, screws, and washers. At least two fasteners are usually used together to complete the assembly of mechanical equipment. In the current technology of fastener forming and processing, in order to make threaded connections between different fasteners later, it is usually necessary to process external or internal threads on the fasteners. However, in the current technology, when processing external or internal threads on fasteners, a special thread rolling machine is required to process the fasteners.

[0003] When machining external threads on fasteners, a thread rolling machine equipped with a thread rolling wheel or thread rolling plate is usually used to perform thread rolling on the fasteners. When machining internal threads on fasteners, a thread rolling machine equipped with a pressing tap is usually used.

[0004] In existing technologies, when machining internal threads on fasteners, each fastener is typically placed directly under a forming tap before machining. Forming taps can machine internal threads on fasteners quickly, and because internal thread rolling is a chipless process, forming taps can also ensure a fast machining speed for fasteners. However, in existing technologies, the time for moving fasteners in and out is relatively long, which is not conducive to fully utilizing the machining speed of the thread rolling machine. Summary of the Invention

[0005] To overcome the above-mentioned defects, embodiments of the present invention provide a fastener internal thread rolling machine and processing technology, which solves the technical problem that the existing thread rolling machine is not convenient to utilize the processing speed of the thread rolling machine when performing internal thread processing on fasteners.

[0006] This invention provides a fastener internal thread rolling machine, including a mounting housing, a lifting slide ram disposed on the mounting housing, a thread rolling drive mechanism slidably disposed on the lifting slide ram, and a pressing tap disposed on the thread rolling drive mechanism, and further comprising: The bidirectional feeding structure is provided inside the mounting housing, which has two clamping areas at the top and bottom, driving the two clamped fasteners to move sequentially to the bottom of the extrusion tap. The side receiving structure is provided on both sides of the bidirectional feeding structure. The side receiving structure is used to remove the processed fastener from the bidirectional feeding structure. The bidirectional feeding structure and the side receiving structure are flipped synchronously. A feeding cylinder, which is used to store unprocessed fasteners and is placed at the bottom of the bidirectional feeding structure; The material receiving cylinder is provided on both sides of the feeding cylinder and is located at the bottom of the lateral material receiving structure for storing the processed fasteners. A volume balancing structure is provided between the feeding cylinder and the two receiving cylinders to accommodate different fastener storage amounts in the feeding cylinder and the two receiving cylinders.

[0007] To simultaneously clamp both processed and unprocessed fasteners, the bidirectional feeding structure further includes a clamping cylinder, a fixing ring, and a wedge-shaped clamping seat. The clamping cylinder is rotatably mounted inside the mounting housing. Connecting rings are provided on both sides of the clamping cylinder, and the fixing ring is disposed inside the connecting ring. The inner wall of the fixing ring fits against the fastener being processed. The wedge-shaped clamping seat is circumferentially disposed on both sides of the clamping cylinder, and a bent connecting member is provided between the wedge-shaped clamping seat and the inner wall of the clamping cylinder.

[0008] To remove the processed fasteners, the lateral receiving structure further includes a transfer cylinder, an elastic telescopic component, and a first electric cylinder. A sliding cylinder seat is slidably connected inside the transfer cylinder. A wedge-shaped fixing member is provided on the inner circumference of the sliding cylinder seat. A bending connecting member is also provided between the wedge-shaped fixing member and the inner wall of the sliding cylinder seat. A top-loading component is provided on the mounting housing. The elastic telescopic component is provided between the sliding cylinder seat and the inner wall of the transfer cylinder. A first electric cylinder is provided on the side wall of the mounting housing. A push seat is provided on the output end of the first electric cylinder. The push seat passes through the transfer cylinder and the elastic telescopic component, and the push seat is in contact with the side wall of the sliding cylinder seat.

[0009] To synchronously drive the clamping cylinder and the transfer cylinder to rotate, a rotating slot frame and a sliding protrusion are further included. The rotating slot frame is fixedly connected inside the mounting housing, and multiple drive shafts are rotatably connected inside the rotating slot frame. The clamping cylinder and the transfer cylinder correspond one-to-one with the drive shafts. The drive shafts are connected to the clamping cylinder or the transfer cylinder through connectors. The sliding protrusion is fixedly connected to the rotating slot frame, and an engagement rotation assembly is provided between the sliding protrusion and the multiple drive shafts.

[0010] In order to place the feeding cylinder and the receiving cylinder into the designated positions inside the mounting box, the inner bottom wall of the mounting box is further provided with a plurality of circular grooves corresponding to the feeding cylinder and the receiving cylinder, and two arc-shaped support plates are fixedly connected to the circular grooves.

[0011] In order to place the fastener into the feeding cylinder or receiving cylinder, the inner bottom of both the feeding cylinder and the receiving cylinder are fixedly connected with a horseshoe-shaped support seat, and both the feeding cylinder and the receiving cylinder are provided with through slots.

[0012] To adjust the internal capacity of the feeding cylinder and the receiving cylinder, the volume balancing structure further includes a sliding frame, abutment strips, a U-shaped connecting frame, and a movable connecting belt. The sliding frame is fixedly connected to the inner bottom wall of the mounting housing, and a sliding seat is slidably connected inside the sliding frame. The abutment strips are slidably provided through the through slots in both the feeding cylinder and the receiving cylinder. The abutment strips that slidably cooperate with the feeding cylinder are fixedly connected to the sliding seat. Sliding slot frames are fixedly connected to both sides of the inner bottom wall of the mounting housing. A U-shaped connecting frame is slidably connected between two of the sliding slot frames. The other two abutment strips are fixedly connected to the U-shaped connecting frame. The movable connecting belt is fixedly connected between the sliding seat and the U-shaped connecting frame.

[0013] To enable the movable connecting belt to move, a guide frame is fixedly connected to the top of the sliding frame, and multiple guide rollers are rotatably connected within the guide frame. The movable connecting belt is driven between the multiple guide rollers.

[0014] To place fasteners into the feeding cylinder and remove fasteners from the receiving cylinder, the system further includes a sliding base, a sliding bracket, and an arc-shaped clamping plate. Multiple sliding bases are fixedly connected to the inner bottom wall of the mounting housing. The feeding cylinder and the receiving cylinder correspond one-to-one with the sliding bases. The sliding bracket is slidably connected to the sliding base. A rotating groove is fixedly connected to the top of the sliding bracket. A rotating shaft is rotatably connected within the rotating groove, and the arc-shaped clamping plate is fixedly connected to the rotating shaft.

[0015] A fastener internal thread rolling process includes the following steps: Step 1, Feeding: Arrange the multiple nuts to be processed longitudinally into the feeding cylinder, then move the feeding cylinder to the bottom of the clamping cylinder, causing the abutment strip inside the feeding cylinder to slide upward, so that the nuts enter the clamping cylinder and are fixed. Then rotate the clamping cylinder to flip the nuts to the upper side, so that they are longitudinally aligned with the extrusion tap. Continue to move the nuts inside the feeding cylinder to the bottom of the clamping cylinder, so that the clamping cylinder clamps two nuts simultaneously. Step 2, Thread Rolling: Gradually roll the threads inside the nut using a tap as it descends; Step 3, Transfer: After the nut on the upper side of the clamping cylinder is threaded, the clamping cylinder and the two transfer cylinders on both sides are rotated. When the clamping cylinder and the two transfer cylinders are rotated to a parallel state, the nut processed in the clamping cylinder corresponds to the position of one of the transfer cylinders. Move the nut into one of the transfer cylinders. Step 4, Unloading: As the transfer cylinder continues to rotate, the nut is moved to the upper side of the receiving cylinder. Under the action of the top material assembly, the processed nut is pushed into the receiving cylinder. Subsequently, the processed nut is removed from the receiving cylinder and the mounting box.

[0016] The beneficial effects of the embodiments of the present invention are as follows: 1. In this invention, when performing internal thread rolling on fasteners using a pressing tap, multiple fasteners are arranged longitudinally and placed into the feeding cylinder in advance. The feeding cylinder is then moved to the bottom of the clamping cylinder. The volume balancing structure then lifts all the fasteners in the feeding cylinder, moving them to the bottom of the clamping cylinder. The fasteners are then clamped, and the clamping cylinder is swung to flip the fasteners to the underside of the pressing tap. The pressing tap is then used to perform internal thread rolling on the fasteners. Afterward, the fasteners in the feeding cylinder are moved to the bottom of the clamping cylinder. This allows for simultaneous clamping of both processed and unprocessed fasteners. The clamping cylinder can be flipped, enabling the pressing tap to continuously perform thread rolling on the fasteners, effectively improving the continuity of the fastener thread rolling process.

[0017] 2. In this invention, after the fasteners on the upper side of the clamping cylinder are threaded, the clamping cylinder and the two transfer cylinders are rotated to parallel, and the processed fasteners are moved into one of the transfer cylinders. Then, during the subsequent rotation of the clamping cylinder, the fasteners in the transfer cylinder are moved into the receiving cylinder, thereby realizing the automatic discharge of the processed fasteners and improving the convenience of the fastener threading process. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional structural schematic diagram of the present invention; Figure 3 For the present invention Figure 2 A magnified structural diagram of point A in the middle; Figure 4 This is a schematic diagram of the structure of the bidirectional feeding structure, the lateral receiving structure, and the rotating trough frame in this invention. Figure 5 This is a schematic diagram of the bidirectional feeding structure in this invention; Figure 6 This is a schematic diagram of the lateral receiving structure in this invention; Figure 7 This is a partial cross-sectional structural diagram showing the cooperation of the feeding cylinder, receiving cylinder, and volume balancing structure in this invention; Figure 8 This is a schematic diagram of the volume balancing structure in this invention.

[0020] In the diagram: 100, bidirectional feeding structure; 200, lateral feeding structure; 300, volume balancing structure; 1. Mounting chassis; 2. Lifting slide; 3. Thread rolling drive mechanism; 4. Extrusion tap; 5. Feeding cylinder; 6. Receiving cylinder; 7. Clamping cylinder; 8. Fixing ring; 9. Connecting ring; 10. Wedge clamping seat; 11. Bending connector; 12. Transfer cylinder; 13. Sliding cylinder seat; 14. Wedge fixing component; 15. First electric cylinder; 16. Pushing seat; 17. Rotating slot frame; 18. Drive shaft; 19. Sliding protrusion; 20. Circular groove; 21. Arc-shaped support plate; 22. Horseshoe-shaped support seat; 23. Sliding frame; 24. Sliding seat; 25. Abutment bar; 26. U-shaped connecting frame; 27. Sliding groove frame; 28. Moving connecting belt; 29. ​​Guide frame; 30. Guide roller; 31. Sliding base; 32. Sliding bracket; 33. Rotating groove; 34. Rotating shaft; 35. Arc-shaped clamping plate; 36. Second electric cylinder; 37. Push rod; 38. Fixed sleeve; 39. Sliding sleeve; 40. Spring; 41. Meshing gear; 42. Meshing tooth plate; 43. Third electric cylinder; 44. Transmission screw; 45. Gearbox; 46. Drive motor. Detailed Implementation The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0021] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0022] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0025] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Example 1, as Figures 1 to 8As shown, this invention discloses a fastener internal thread rolling machine, including a mounting housing 1. A sealing door is hinged to one side of the mounting housing 1. Nuts can be moved in or out through the sealing door area of ​​the mounting housing 1. A lifting slide 2 is provided on the mounting housing 1. A thread rolling drive mechanism 3 is longitudinally slidably provided on the lifting slide 2. A pressing tap 4 is provided on the thread rolling drive mechanism 3. The lifting slide 2 is a common longitudinal lifting device in the prior art. The lifting slide 2 is generally equipped with a screw drive mechanism to drive the thread rolling drive mechanism 3 and the pressing tap 4 to move longitudinally. The thread rolling drive mechanism 3 is a prior art driving technology device that drives the pressing tap 4 to rotate. It is a prior art device known to those skilled in the art. In actual use, the pressing tap 4 is driven to rotate by the thread rolling drive mechanism 3, so that the pressing tap 4 gradually enters the opening in the fastener. The internal thread is rolled in the opening of the fastener by the threaded section on the side wall of the pressing tap 4. The pressing tap 4 is commonly used to perform internal thread rolling on fasteners such as nuts.

[0027] like Figures 1 to 2 and Figures 4 to 5 As shown, it also includes a bidirectional feeding structure 100. The mounting housing 1 has a bidirectional feeding structure 100 with upper and lower clamping areas inside, which drives the two clamped fasteners to move sequentially to the bottom of the extrusion tap 4. The bidirectional feeding structure 100 includes a clamping cylinder 7, a fixing ring 8, and a wedge-shaped clamping seat 10. The clamping cylinder 7 is rotatably mounted inside the mounting housing 1. Connecting rings 9 are provided on both sides of the clamping cylinder 7, and fixing rings 8 are provided inside the connecting rings 9. The inner wall of the fixing ring 8 fits against the fastener being processed. Wedge-shaped clamping seats 10 are circumferentially provided on both sides of the clamping cylinder 7. A bent connecting piece 11 is provided between the wedge-shaped clamping seat 10 and the inner wall of the clamping cylinder 7. This invention is mainly used for internal thread rolling of nuts. During nut thread rolling, the nut generates rotation during the rotation of the extrusion tap 4. Due to the influence of torque, a corresponding fixed ring 8 can be installed inside the rotating ring sleeve according to the shape of the nut being processed. The inner wall of the fixed ring 8 is set as a polygon that matches the nut. After the nut being processed enters the clamping cylinder 7, the nut and the inner wall of the fixed ring 8 are fully fitted to prevent the nut from shifting during the thread rolling process. After the nut is pushed into the clamping cylinder 7 and passes through the fixed ring 8, the nut enters between multiple wedge-shaped clamping seats 10. The inner wall of the wedge-shaped clamping seats 10 matches the inclined outer wall of the nut. Under the deformation pressure generated by the bending connector 11, the multiple wedge-shaped clamping seats 10 clamp the nut being processed. The bending connector 11 is made of metal and has the characteristics of deformation and reset. When squeezed, it can generate a thrust on the wedge-shaped clamping seats 10.

[0028] like Figures 1 to 2 , Figure 4 and Figure 6 As shown, the bidirectional feeding structure 100 has lateral receiving structures 200 on both sides. The lateral receiving structures 200 are used to remove the processed fasteners from the bidirectional feeding structure 100. The lateral receiving structures 200 include a transfer cylinder 12, an elastic telescopic component, and a first electric cylinder 15. A sliding cylinder seat 13 is slidably connected inside the transfer cylinder 12. A wedge-shaped fixing member 14 is provided on the inner circumference of the sliding cylinder seat 13. A bent connecting member 11 is also provided between the wedge-shaped fixing member 14 and the inner wall of the sliding cylinder seat 13. A top-loading component is provided on the mounting housing 1. An elastic telescopic component is provided between the sliding cylinder seat 13 and the inner wall of the transfer cylinder 12. The first electric cylinder 15 is provided on the side wall of the mounting housing 1. A push seat 16 is provided on the output end of the first electric cylinder 15. The push seat 16 passes through the transfer cylinder 12 and the elastic telescopic component. The push seat 16 fits against the side wall of the sliding cylinder seat 13. When it is necessary to clamp the cylinder... When the nut processed in the clamping cylinder 7 is removed, when both the clamping cylinder 7 and the two transfer cylinders 12 are rotated to a parallel state, the nut processed in the clamping cylinder 7 corresponds to the position of one of the transfer cylinders 12. The first electric cylinder 15 on the corresponding side is activated to drive the push seat 16 into the transfer cylinder 12, pushing one side of the sliding cylinder seat 13 out of the transfer cylinder 12, so that multiple wedge-shaped fixing parts 14 move to one side of the nut. The wedge-shaped fixing parts 14 fit against the outer wall of the nut. The inner wall of the wedge-shaped fixing parts 14 is provided with a friction surface, so that the contact between the wedge-shaped fixing parts 14 and the nut generates a large friction force. Under the action of the elastic telescopic component, the wedge-shaped fixing parts 14 can drive the nut to enter the transfer cylinder 12 together. Subsequently, during the continued rotation of the transfer cylinder 12, the nut is driven to move into the upper side of the receiving cylinder 6. Under the action of the top material component, the processed nut is pushed into the receiving cylinder 6. In this embodiment, the top material assembly includes a second electric cylinder 36, which is mounted on the mounting housing 1 via a mounting bracket. The output end of the second electric cylinder 36 faces the transfer cylinder 12, and a top-in rod 37 is provided on the output end of the second electric cylinder 36. An inlet hole is provided on the sliding cylinder seat 13, and the inner diameter of the inlet hole is smaller than the outer diameter of the push seat 16. After the transfer cylinder 12 drives the nut to flip to the lower side, the second electric cylinder 36 is activated to drive the top-in rod 37 into the transfer cylinder 12 and the sliding cylinder seat 13. The top-in rod 37 pushes the nut into the receiving cylinder 6. In this embodiment, the elastic telescopic component includes a fixed sleeve 38, which is fixedly connected inside the transfer cylinder 12. A sliding sleeve 39 is slidably disposed inside the fixed sleeve 38. A spring 40 is sleeved between the fixed sleeve 38 and the sliding sleeve 39. When the push seat 16 pushes the sliding sleeve seat 13 to move outward from the transfer cylinder 12, the sliding sleeve 39 moves inside the fixed sleeve 38, causing the spring 40 to stretch. After the push seat 16 gradually moves out of the transfer cylinder 12, the sliding sleeve 39 moves back into the fixed sleeve 38 under the action of the spring 40, causing the sliding sleeve seat 13 to move back into the transfer cylinder 12. The two transfer cylinders 12 are oriented in opposite directions relative to the clamping cylinder 7, so that the two sliding cylinder seats 13 are respectively aligned with the positions of the two fixed rings 8 inside the clamping cylinder 7. When the two transfer cylinders 12 and the clamping cylinder 7 are kept parallel, the positions of the two sliding cylinder seats 13 are both facing the clamping cylinder 7.

[0029] like Figures 1 to 2 and Figure 4 As shown, the bidirectional feeding structure 100 and the lateral receiving structure 200 rotate synchronously. It also includes a rotating slot frame 17 and a sliding protrusion 19. The rotating slot frame 17 is fixedly connected inside the mounting box 1. Multiple drive shafts 18 are rotatably connected inside the rotating slot frame 17. The clamping cylinder 7 and the transfer cylinder 12 correspond one-to-one with the drive shafts 18. The drive shafts 18 are connected to the clamping cylinder 7 or the transfer cylinder 12 through connectors. The sliding protrusion 19 is fixedly connected on the rotating slot frame 17. A meshing rotating assembly is provided between the sliding protrusion 19 and the multiple drive shafts 18. When it is necessary for the clamping cylinder 7 and the transfer cylinder 12 to perform a semi-circular reciprocating rotation, the meshing rotating assembly drives the three drive shafts 18 to swing, thereby realizing the rotation of the clamping cylinder 7 and the transfer cylinder 12. In this embodiment, the meshing rotation assembly includes a meshing gear 41. Each drive shaft 18 is fixedly fitted with a meshing gear 41. A meshing toothed plate 42 is slidably connected in the sliding protrusion 19. The meshing toothed plate 42 meshes with the meshing gear 41. A third electric cylinder 43 is provided in the mounting housing 1. The output end of the third electric cylinder 43 is fixed to the middle of the meshing toothed plate 42 through a connecting plate. When the third electric cylinder 43 is started, it drives the meshing toothed plate 42 to move laterally back and forth, thereby driving multiple drive shafts 18 to rotate back and forth.

[0030] The inner bottom wall of the mounting box 1 is fixedly connected with multiple circular grooves 20 corresponding to the feeding cylinder 5 and the receiving cylinder 6. Two arc-shaped support plates 21 are fixedly connected to the circular grooves 20. The bottoms of the feeding cylinder 5 and the receiving cylinder 6 are placed into the circular grooves 20. Two arc-shaped support plates 21 are used to support the feeding cylinder 5 and the receiving cylinder 6 without affecting their entry into the arc-shaped support plates 21.

[0031] like Figures 1 to 3 and Figure 7As shown, the feeding cylinder 5 is used to store unprocessed fasteners and is placed at the bottom of the bidirectional feeding structure 100. Receiving cylinders 6 are provided on both sides of the feeding cylinder 5. The receiving cylinders 6 are located at the bottom of the lateral receiving structure 200 and are used to store processed fasteners. The inner walls of both the feeding cylinder 5 and the receiving cylinder 6 are adapted to the outer wall of the nut and are polygonal. A horseshoe-shaped support 22 is fixedly connected to the inner bottom of both the feeding cylinder 5 and the receiving cylinder 6. Both the feeding cylinder 5 and the receiving cylinder 6 have through slots. When a nut to be processed is placed into the feeding cylinder 5, and when a processed nut is placed into the receiving cylinder 6, the nut at the bottom will move to the top of the horseshoe-shaped support 22. The special shape of the horseshoe-shaped support 22 is designed not to affect the normal lifting and lowering of the abutment bar 25.

[0032] like Figures 1 to 2 and Figures 7 to 8 As shown, a volume balancing structure 300 is provided between the feeding cylinder 5 and the two receiving cylinders 6 to accommodate different fastener storage amounts within the feeding cylinder 5 and the two receiving cylinders 6. The volume balancing structure 300 includes a sliding frame 23, abutment strips 25, a U-shaped connecting frame 26, and a movable connecting belt 28. The sliding frame 23 is fixedly connected to the inner bottom wall of the mounting housing 1. A sliding seat 24 is slidably connected within the sliding frame 23. Abutment strips 25 are slidably provided through slots in both the feeding cylinder 5 and the receiving cylinders 6. The abutment strips 25 that slide with the feeding cylinder 5 are fixedly connected to the sliding seat 24. Sliding groove frames 27 are fixedly connected to both sides of the inner bottom wall of the mounting housing 1. The two sliding groove frames 27 are connected to each other. A U-shaped connecting frame 26 is slidably connected between the two parts, and the other two abutting strips 25 are fixedly connected to the U-shaped connecting frame 26. A movable connecting belt 28 is fixedly connected between the sliding seat 24 and the U-shaped connecting frame 26. In actual use, the number of nuts in the feeding cylinder 5 decreases continuously, while the number of nuts in the receiving cylinder 6 increases continuously. In order to move the nuts in the feeding cylinder 5 into the clamping cylinder 7 and reduce the falling distance of the nuts in the transfer cylinder 12 into the receiving cylinder 6, the U-shaped connecting frame descends between the two sliding grooves when the sliding seat 24 rises in the sliding frame 23 under the action of the movable connecting belt 28, thereby realizing the opposite movement of the abutting strips 25 in the feeding cylinder 5 and the receiving cylinder 6. In this embodiment, a transmission screw 44 is rotatably disposed inside the sliding frame 23, and the sliding seat 24 is driven by the transmission screw 44 through a ball thread assembly. A gearbox 45 is disposed on the top of the sliding frame 23 and is threadedly engaged with the transmission screw 44. A drive motor 46 is disposed on the top of the sliding frame 23, and the output end of the drive motor 46 is driven by the gearbox 45. When the drive motor 46 is started, the transmission screw 44 is driven to rotate through the gearbox 45, thereby causing the sliding seat 24 to move longitudinally within the sliding frame 23. A guide frame 29 is fixedly connected to the top of the sliding frame 23. Multiple guide rollers 30 are rotatably connected inside the guide frame 29. The movable connecting belt 28 is driven between the multiple guide rollers 30. In order to keep the movable connecting belt 28 moving smoothly, the movable connecting belt 28 is driven smoothly between the multiple guide rollers 30 inside the guide frame 29.

[0033] like Figures 1 to 3 As shown, it also includes a sliding base 31, a sliding bracket 32, and an arc-shaped clamping plate 35. Multiple sliding bases 31 are fixedly connected to the inner bottom wall of the mounting housing 1. The feeding cylinder 5 and the receiving cylinder 6 correspond one-to-one with the sliding bases 31. A sliding bracket 32 ​​is slidably connected to the sliding base 31. A rotating groove 33 is fixedly connected to the top of the sliding bracket 32. A rotating shaft 34 is rotatably connected inside the rotating groove 33. An arc-shaped clamping plate 35 is fixedly connected to the rotating shaft 34. When multiple nuts are moved to the feeding cylinder 5 or nuts stored in the receiving cylinder 6 are removed, the weight of the nuts stacked on the feeding cylinder 5 or receiving cylinder 6... Since the material is relatively heavy, to make it easier to move the nut in or out, the feeding cylinder 5 and the receiving cylinder 6 can be moved onto the sliding bracket 32, so that the inner arc surface of the arc-shaped clamping plate 35 contacts the outer wall of the feeding cylinder 5 or the receiving cylinder 6. Then, the feeding cylinder 5 or the receiving cylinder 6 can be rotated together along the center point of the rotating shaft 34, so that the feeding cylinder 5 or the receiving cylinder 6 tilts to the outside of the mounting box 1. This tilting of the feeding cylinder 5 makes it easier to place the unprocessed nut into the feeding cylinder 5, while causing the receiving cylinder 6 to rotate significantly, so that the top opening of the receiving cylinder 6 faces downward, making it easier to pour out the processed nut from the receiving cylinder 6.

[0034] Working principle of this fastener internal thread rolling machine: First, place the multiple nuts to be processed longitudinally into the feeding cylinder 5. Then, move the feeding cylinder 5 to the bottom of the clamping cylinder 7, causing the abutment strip 25 inside the feeding cylinder 5 to slide upward, so that the nuts on the upper side enter the clamping cylinder 7. Then, rotate the clamping cylinder 7 to flip the nuts to the upper side, so that they are longitudinally aligned with the extrusion tap 4. Then, continue to move the nuts inside the feeding cylinder 5 to the bottom of the clamping cylinder 7, so that the clamping cylinder 7 clamps two nuts simultaneously. Use the extrusion tap 4 to gradually roll the threads inside the nuts during the descent process. After the nut on the upper side of the clamping cylinder 7 is threaded, the clamping cylinder 7 and the two transfer cylinders 12 on both sides are rotated. When the clamping cylinder 7 and the two transfer cylinders 12 are rotated to a parallel state, the nut processed in the clamping cylinder 7 corresponds to the position of one of the transfer cylinders 12. The first electric cylinder 15 on the corresponding side is activated to drive the push seat 16 into the transfer cylinder 12, pushing one side of the sliding cylinder seat 13 out of the transfer cylinder 12, so that multiple wedge-shaped fixing parts 14 move to one side of the nut. The wedge-shaped fixing parts 14 fit against the outer wall of the nut. Under the action of the elastic telescopic component, the wedge-shaped fixing parts 14 can drive the nut to enter the transfer cylinder 12 together. Subsequently, during the continued rotation of the transfer cylinder 12, the nut is driven to move into the upper side of the receiving cylinder 6. Under the action of the top material component, the processed nut is pushed into the receiving cylinder 6. Using the above method, the continuous thread rolling operation of multiple nuts in the feeding cylinder 5 is gradually completed, and the threaded nuts are moved into the receiving cylinder 6 and then discharged.

[0035] Example 2: Based on a fastener internal thread rolling machine, the present invention also proposes a fastener internal thread rolling process, including the following steps: Step 1, Feeding: Arrange the multiple nuts to be processed longitudinally in the feeding cylinder 5, then move the feeding cylinder 5 to the bottom of the clamping cylinder 7, causing the abutment strip 25 inside the feeding cylinder 5 to slide upward, so that the nuts enter the clamping cylinder 7 and are fixed. Then rotate the clamping cylinder 7 to flip the nuts to the upper side, so that they are longitudinally aligned with the extrusion tap 4. Continue to move the nuts in the feeding cylinder 5 to the bottom of the clamping cylinder 7, so that the clamping cylinder 7 clamps two nuts simultaneously. Step 2, Thread Rolling: Gradually roll the threads inside the nut using the extrusion tap 4 as it descends; Step 3, Transfer: After the nut on the upper side of the clamping cylinder 7 is threaded, the clamping cylinder 7 and the two transfer cylinders 12 on both sides are rotated. When the clamping cylinder 7 and the two transfer cylinders 12 are rotated to a parallel state, the nut processed in the clamping cylinder 7 corresponds to the position of one of the transfer cylinders 12. The nut is then moved into one of the transfer cylinders 12. Step 4, Unloading: As the transfer cylinder 12 continues to rotate, it moves the nut into the upper side of the receiving cylinder 6. Under the action of the top material assembly, the processed nut is pushed into the receiving cylinder 6. Subsequently, the processed nut is removed from the receiving cylinder 6 and the mounting box 1.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A fastener internal thread rolling machine, comprising a mounting cabinet (1), a lifting ram (2) is arranged on the mounting cabinet (1), the lifting ram (2) is longitudinally slidably provided with a rolling drive mechanism (3), an extrusion tap (4) is arranged on the rolling drive mechanism (3), characterized in that, Also include: The installation machine box (1) is provided with a bidirectional feeding structure (100) with upper and lower clamping areas, which drives the two clamped fasteners to move to the bottom of the extrusion tap (4) in turn; The two sides of the bidirectional feeding structure (100) are provided with a lateral material receiving structure (200), which is used to take out the processed fasteners from the bidirectional feeding structure (100), and the bidirectional feeding structure (100) and the lateral material receiving structure (200) are synchronous overturning; The feeding cylinder (5) is used to store unprocessed fasteners and is placed at the bottom of the bidirectional feeding structure (100); The two sides of the feeding cylinder (5) are provided with the receiving cylinder (6), which is located at the bottom of the lateral material receiving structure (200) and is used to store processed fasteners; The volume balancing structure (300) is arranged between the feeding cylinder (5) and the two receiving cylinders (6) to adapt to the different storage amounts of fasteners in the feeding cylinder (5) and the two receiving cylinders (6).

2. A fastener tap as defined in claim 1 wherein, The bidirectional feeding structure (100) comprises: The clamping cylinder (7) is rotationally arranged in the installation machine box (1); The two sides of the clamping cylinder (7) are provided with a connecting ring (9), and the connecting ring (9) is provided with a fixed ring (8) therein, and the inner wall of the fixed ring (8) is attached to the processed fastener; The two sides of the clamping cylinder (7) are circumferentially provided with the wedge-shaped clamping seat (10), and the wedge-shaped clamping seat (10) and the inner wall of the clamping cylinder (7) are provided with the bending connecting piece (11).

3. A fastener tap as defined in claim 2 wherein, The lateral material receiving structure (200) comprises: The transfer cylinder (12) is slidably connected with a sliding cylinder seat (13), the sliding cylinder seat (13) is circumferentially provided with a wedge-shaped fixing piece (14), the wedge-shaped fixing piece (14) and the inner wall of the sliding cylinder seat (13) are also provided with the bending connecting piece (11), and the installation machine box (1) is provided with a material pushing assembly; The sliding cylinder seat (13) and the inner wall of the transfer cylinder (12) are provided with the elastic expansion assembly; The first electric cylinder (15) is arranged on the side wall of the installation machine box (1), the output end of the first electric cylinder (15) is provided with a pushing seat (16), the pushing seat (16) penetrates the transfer cylinder (12) and the elastic expansion assembly, and the pushing seat (16) is attached to the side wall of the sliding cylinder seat (13).

4. A fastener tap as defined in claim 3 wherein, Also include: Rotary groove frame (17), the installation case (1) is fixedly connected with the rotary groove frame (17), a plurality of drive shafts (18) are rotatably connected in the rotary groove frame (17), the clamping cylinder (7) and the transfer cylinder (12) correspond to the drive shaft (18), the drive shaft (18) is connected with the clamping cylinder (7) or the transfer cylinder (12) through the connecting piece; The sliding convex (19) is fixedly connected on the rotary groove frame (17), and the sliding convex (19) is provided with a meshing rotation assembly between a plurality of the drive shafts (18).

5. A fastener tap as defined in claim 4 wherein, The inner bottom wall of the installation case (1) is fixedly connected with a plurality of circular grooves (20) corresponding to the feeding cylinder (5) and the receiving cylinder (6), and two arc-shaped supporting plates (21) are fixedly connected on the circular grooves (20).

6. A fastener tap as defined in claim 5 wherein, The inner bottom of the feeding cylinder (5) and the receiving cylinder (6) is fixedly connected with a hoof-shaped support seat (22), and through grooves are formed in the feeding cylinder (5) and the receiving cylinder (6).

7. A fastener tap as defined in claim 6 wherein, The volume balancing structure (300) comprises: The sliding frame (23) is fixedly connected on the inner bottom wall of the installation case (1), and the sliding seat (24) is slidably connected in the sliding frame (23); The abutting strip (25) is slidably provided in the feeding cylinder (5) and the receiving cylinder (6) through the through groove, and the abutting strip (25) slidably connected with the feeding cylinder (5) is fixedly connected on the sliding seat (24); The U-shaped connecting frame (26) is slidably connected between the two sliding groove frames (27) fixedly connected on the inner bottom wall of the installation case (1), and the remaining two abutting strips (25) are fixedly connected with the U-shaped connecting frame (26); The moving connection belt (28) is fixedly connected between the sliding seat (24) and the U-shaped connecting frame (26).

8. A fastener tap as defined in claim 7 wherein, The top of the sliding frame (23) is fixedly connected with the guide frame (29), a plurality of guide rollers (30) are rotatably connected in the guide frame (29), and the moving connection belt (28) is drivingly arranged between the plurality of guide rollers (30).

9. A fastener tap as defined in claim 8 wherein, Further comprising: A plurality of sliding bases (31) are fixedly connected on the inner bottom wall of the installation case (1), and the feeding cylinder (5) and the receiving cylinder (6) correspond to the plurality of sliding bases (31); The sliding support (32) is slidably connected on the sliding base (31), and the top of the sliding support (32) is fixedly connected with the rotary groove body (33), and the rotary shaft (34) is rotatably connected in the rotary groove body (33); The arc-shaped clamping plate (35) is fixedly connected on the rotary shaft (34).

10. A fastener internal thread rolling process using the fastener internal thread rolling machine of claim 9, characterized by, The method comprises the following steps: Step one, discharging: the multiple nuts to be processed are longitudinally arranged and placed in the feeding cylinder (5), then the feeding cylinder (5) is moved to the bottom of the clamping cylinder (7), the abutting strip (25) in the feeding cylinder (5) is driven to slide upward, the nuts enter the clamping cylinder (7) and are fixed, then the clamping cylinder (7) is driven to rotate, the nuts are turned to the upper side and correspond to the extrusion tap (4) longitudinally, the nuts in the feeding cylinder (5) are continuously moved to the bottom of the clamping cylinder (7), and the clamping cylinder (7) synchronously clamps two nuts; Step two, thread rolling: the inside of the nut is gradually rolled during the descending process of the extrusion tap (4); Step three, transfer: after the nut on the upper side of the clamping cylinder (7) is rolled, the clamping cylinder (7) and the two transfer cylinders (12) on the two sides are driven to rotate, when the clamping cylinder (7) and the two transfer cylinders (12) are all rotated to the parallel state, the processed nut in the clamping cylinder (7) corresponds to one of the transfer cylinders (12), and the nut is moved into one of the transfer cylinders (12); Step four, discharging: during the subsequent turning process of the transfer cylinder (12), the nut is moved into the upper side of the receiving cylinder (6), under the action of the ejection assembly, the processed nut is pushed into the receiving cylinder (6), and then the processed nut is removed from the receiving cylinder (6) and the installation case (1).

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