Inner hole tapping device for nut production

Abstract

The invention relates to the related technical field of thread machining, in particular to an inner hole tapping device for nut production, which comprises a machining platform, a feeding seat, a feeding structure and a tapping device, the machining platform is supported and positioned through a first-stage supporting leg, a ball bearing is fixedly mounted at the center of the machining platform, and a clearance groove and a material returning opening are formed in the machining platform; a guide plate is fixedly installed on the side edge of the machining platform, a rotating shaft is fixedly connected to the bottom of the feeding base, and the rotating shaft is rotationally installed on the machining platform through a ball bearing. According to the inner hole tapping device for nut production, the machining platform, the feeding base, the feeding structure and the tapping device body are combined, the feeding port is formed in the feeding base, the guide plate is arranged on the side edge of the machining platform, and therefore nuts are automatically fed through the feeding base, the movable groove is formed in the side end face of the feeding port, and therefore the nuts can be automatically fed through the movable groove. And a push seat and a support spring are arranged in the movable groove, so that the tapped screw cap can be automatically returned conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field related to thread processing, and in particular to an internal hole tapping device for nut production. Background Art

[0002] Nuts are components that are screwed together with bolts or screws to fasten them together. They are essential components for all manufacturing machinery and are classified into several types based on their material, including carbon steel, stainless steel, and non-ferrous metals (such as copper). These include flange nuts, also known as washer nuts, serrated nuts, hexagonal flange nuts, and flange nuts. They are mostly used in pipe connections or on workpieces that require increased nut contact surface.

[0003] The existing Chinese patent document with announcement number CN222133709U discloses an internal hole tapping device for flange nut production, the scheme of which includes a frame, a processing table fixedly installed on the top of the frame, a limiting mechanism installed on the processing table, the limiting mechanism including a first rotating shaft, a triangular connecting plate, a connecting rod, a first slide groove and a clamping plate, a first rotating shaft is vertically rotatably installed at the middle position inside the processing table, a triangular connecting plate is fixedly installed at the middle position of the first rotating shaft, and connecting rods are rotatably installed at the top corner positions of the upper ends of the triangular connecting plates. Three groups of first slide grooves are opened in a circumferential array on the top of the processing table, and a clamping plate is slidably installed in the interior of each group of the first slide grooves, and one end of each group of the connecting rods away from the triangular connecting plate is rotatably connected to the bottom end of the clamping plate at the corresponding position;

[0004] However, the loading structure in the above scheme cannot realize automatic loading, which leads to low production and processing efficiency of the equipment during actual production. In addition, some existing machine tools with automatic loading and unloading usually also require independent drive structures to drive the loading mechanism and the unloading mechanism, which leads to the need for multiple drive structures for the equipment, making it inconvenient to perform daily circuit inspection and maintenance of the equipment. Therefore, the present invention proposes an internal hole tapping device for nut production to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide an internal hole tapping device for nut production to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an internal hole tapping device for nut production, comprising:

[0007] The processing platform is supported and positioned by the first-level legs. A ball bearing is fixedly installed at the center of the processing platform, and an air avoidance groove and a material return port are opened on the processing platform. A guide plate is fixedly installed on the side of the processing platform;

[0008] A feeding seat, wherein the bottom of the feeding seat is fixedly connected to a rotating shaft, the rotating shaft is rotatably mounted on the processing platform through a ball bearing, and a feeding port is opened on the feeding seat;

[0009] A loading structure, which is supported and positioned by secondary legs, is located at the left end of the processing platform and is used to load nuts to be processed;

[0010] The tapping device is fixedly provided with a mounting bracket on the side of the processing platform, a hydraulic mechanism is fixedly installed on the mounting bracket, a connecting plate is fixedly installed on the telescopic rod of the hydraulic mechanism, and the main body of the tapping device is fixedly installed on the connecting plate.

[0011] Preferably, the cutter head on the tapping device is located directly above the avoidance groove, and the feed port is used to transport the nut sent by the feeding structure to directly below the tapping device, and send the nut processed by the tapping device to the position of the return port for return. There are eight feed ports arranged on the feeding seat in equal circumference, and the guide plate is used to confine the nut in the feed port, and the guide plate does not extend to the position of the return port, and the other end of the guide plate is in contact with the end side of the feeding structure.

[0012] Preferably, a movable groove is provided on the inner end face of the feeding port, a guide groove is provided through the upper side face of the movable groove, a push seat is movably installed in the movable groove, the inner end of the push seat is fixedly connected to a support spring, a threaded hole is provided on the upper end face of the push seat, a force-bearing column is threadedly connected in the threaded hole, the force-bearing column is movably arranged in the guide groove, when the support spring is in a reset state, the force-bearing column is against the outer end of the guide groove, and when the push seat is fully pushed into the movable groove, the force-bearing column is against the inner end of the guide groove.

[0013] Preferably, a force-bearing member is fixedly installed on the side of the processing platform through a connecting bracket. The force-bearing member and the force-bearing column are arranged at the same height, and the force-bearing member is used to limit the position of the force-bearing column.

[0014] Preferably, the force-bearing member includes a first-level force-bearing plate and a second-level force-bearing plate, the first-level force-bearing plate is a straight plate, when the force column moves to the port of the first-level force-bearing plate, the force column is located at the inner end of the first-level force-bearing plate, the second-level force-bearing plate is an arc-shaped plate, when the force column is against the inner side surface of the second-level force-bearing plate, the force column is against the inner end of the guide groove.

[0015] Preferably, a pressure plate is fixedly installed on one of the connecting brackets on the secondary force-bearing plate, the pressure plate is cast from spring steel, and the end of the pressure plate is arranged to abut against the upper surface of the feeding seat, the thickness of the feeding seat is consistent with the thickness of the nut, and the width of the pressure plate is greater than the inner hole size of the nut. When the nut passes under the pressure plate, the pressure plate completely covers the inner hole of the nut.

[0016] Preferably, a first-level bearing seat and a second-level bearing seat are fixedly installed on the lower surface of the processing platform, a first-level rotating shaft is rotatably installed on the first-level bearing seat via a first-level bearing, a second-level rotating shaft is rotatably installed on the second-level bearing seat via a second-level bearing, the first-level rotating shaft and the second-level rotating shaft are coaxially arranged, the inner end of the second-level rotating shaft is fixedly connected with an adapter seat, the adapter seat and the first-level rotating shaft are transmission-connected via a ratchet structure, the inner end of the first-level rotating shaft is fixedly connected with a first-level bevel gear, the rotating shaft is fixedly connected with a second-level bevel gear, and the first-level bevel gear and the second-level bevel gear are meshed with each other.

[0017] Preferably, the outer end of the secondary rotating shaft is fixedly connected to a driven gear, the lower surface of the connecting plate is fixedly mounted with a rack seat, a transmission rack is fixedly mounted on the rack seat, and the transmission rack is meshed with the driven gear.

[0018] Preferably, when the transmission rack is pressed down, the transmission rack is separated from the driven gear before the cutter head contacts the nut. During the process of the hydraulic mechanism moving from the reset state to the separation of the transmission rack and the driven gear, the feeding seat rotates one-eighth of a circle.

[0019] Preferably, when the transmission rack is pressed down, the transmission rack drives the driven gear, thereby driving the secondary rotating shaft to drive the primary rotating shaft through the ratchet structure, and at this time, the feeding seat rotates in the forward direction, and when the transmission rack is moved upward, the secondary rotating shaft cannot drive the primary rotating shaft to rotate through the ratchet structure.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. An internal hole tapping device for nut production is provided, which is composed of a processing platform, a feed base, a loading structure, and a tapping device. A feed port is provided on the feed base, and a guide plate is provided on the side of the processing platform, so that the nuts are automatically fed through the feed base. A movable groove is provided on the side end surface of the feed port, and a push seat and a support spring are provided in the movable groove, so that the tapped nuts can be automatically ejected.

[0022] 2. By fixing a rack seat with a transmission rack on the lower surface of the connecting plate, and arranging a first-level bearing seat and a second-level bearing seat on the lower surface of the processing platform, and rotatably installing a first-level rotating shaft on the first-level bearing seat through the first-level bearing, and rotatably installing a second-level rotating shaft on the second-level bearing seat through the second-level bearing, and connecting an adapter seat at the end of the second-level rotating shaft, and allowing the adapter seat to realize unidirectional drive of the first-level rotating shaft through the ratchet structure, thereby driving the driven gear through the transmission rack, and then driving the first-level rotating shaft, and then driving the feeding seat to move, thereby driving the movement of the feeding seat through the downward pressure of the tapping device, thereby reducing the required driving structure of the device, so as to facilitate daily circuit inspection and maintenance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure at center A;

[0025] Figure 3 for Figure 1 A magnified schematic diagram of the structure at point B in the middle;

[0026] Figure 4 A half-section view of the present invention;

[0027] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point C in the middle;

[0028] Figure 6 A top view of the present invention;

[0029] Figure 7 for Figure 6 A magnified schematic diagram of the structure at D in the middle;

[0030] Figure 8 This is a schematic diagram of the position distribution of the force-bearing member and the feeding seat of the present invention;

[0031] Figure 9 This is a schematic diagram of the push seat structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the processing platform structure of the present invention;

[0033] Figure 11 This is a schematic structural diagram of the force-bearing member of the present invention;

[0034] Figure 12 A half-section view of the feeding seat of the present invention;

[0035] Figure 13 for Figure 12 Enlarged schematic diagram of the structure at E in the middle.

[0036] In the figure: processing platform 1, feeding seat 2, loading structure 3, tapping device 4, primary support leg 5, rotating shaft 6, secondary support leg 7, nut 8, mounting bracket 9, hydraulic mechanism 10, connecting plate 11, feeding port 12, guide plate 13, ball bearing 14, air avoidance groove 15, material return port 16, connecting bracket 17, force-bearing member 18, primary force plate 19, secondary force plate 20, movable groove 21, guide groove 22, push seat 23, support spring 24, force column 25, pressure plate 26, primary bearing seat 27, secondary bearing seat 28, primary rotating shaft 29, secondary rotating shaft 30, adapter seat 31, ratchet structure 32, primary bevel gear 33, secondary bevel gear 34, driven gear 35, rack seat 36, transmission rack 38, cutter head 39, threaded hole 40. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figures 1-13 , the present invention provides the following three preferred embodiments:

[0039] Embodiment 1: A device for tapping an inner hole for producing a nut, comprising a processing platform 1, a feeding seat 2, a feeding structure 3 and a tapping device 4, wherein the processing platform 1 is supported and positioned by a primary support leg 5, a ball bearing 14 is fixedly installed at the center of the processing platform 1, and an air avoidance groove 15 and a material return port 16 are provided on the processing platform 1, a guide plate 13 is fixedly installed on the side of the processing platform 1, the bottom of the feeding seat 2 is fixedly connected to a rotating shaft 6, the rotating shaft 6 is rotatably mounted on the processing platform 1 through a ball bearing 14, a feeding port 12 is provided on the feeding seat 2, the feeding structure 3 is supported and positioned by a secondary support leg 7, the feeding structure 3 is located at the left end of the processing platform 1, and the feeding structure 3 is used to load the nut 8 to be processed, the processing platform 1 A mounting bracket 9 is fixedly provided on the side, a hydraulic mechanism 10 is fixedly installed on the mounting bracket 9, a connecting plate 11 is fixedly installed on the telescopic rod of the hydraulic mechanism 10, the main body of the tapping device 4 is fixedly installed on the connecting plate 11, and the cutter head 39 on the tapping device 4 is located directly above the air avoidance groove 15, the feed port 12 is used to transport the nut 8 sent by the feeding structure 3 to directly below the tapping device 4, and to send the nut 8 processed by the tapping device 4 to the position of the return port 16 for return, and the feed port 12 is provided with eight equal circumferences on the feeding seat 2, and the guide plate 13 is used to confine the nut 8 in the feed port 12, and the guide plate 13 does not extend to the position of the return port 16, and the other end of the guide plate 13 is in contact with the end side of the feeding structure 3.

[0040] The inner end face of the feeding port 12 is provided with a movable groove 21, and the upper side face of the movable groove 21 is penetrated by a guide groove 22, and a push seat 23 is movably installed in the movable groove 21, and the inner end of the push seat 23 is fixedly connected with a support spring 24, and the upper end face of the push seat 23 is provided with a threaded hole 40, and a force column 25 is threadedly connected in the threaded hole 40, and the force column 25 is movably set in the guide groove 22. When the support spring 24 is in a reset state, the force column 25 abuts against the outer end of the guide groove 22. When the push seat 23 is fully pushed into the movable groove 21, the force column 25 abuts against the inner end of the guide groove 22, and a force member 18 is fixedly installed on the side of the processing platform 1 through a connecting bracket 17. The force member 18 and the force column 25 are set at the same height, and the force member 18 is used to limit the position of the force column 25.

[0041] The force-bearing member 18 includes a primary force-bearing plate 19 and a secondary force-bearing plate 20. The primary force-bearing plate 19 is a straight plate. When the force-bearing column 25 moves to the end of the primary force-bearing plate 19, the force-bearing column 25 is located at the inner end of the primary force-bearing plate 19, and the secondary force-bearing plate 20 is an arc-shaped plate. When the force-bearing column 25 is against the inner side surface of the secondary force-bearing plate 20, the force-bearing column 25 is against the inner end of the guide groove 22. By setting an internal hole tapping device for nut production composed of a processing platform 1, a feeding seat 2, a loading structure 3 and a tapping device 4, a feeding port 12 is opened on the feeding seat 2, and a guide plate 13 is set on the side of the processing platform 1, so that the nut 8 is automatically fed through the feeding seat 2, and a movable groove 21 is opened on the side end face of the feeding port 12, and a push seat 23 and a support spring 24 are set in the movable groove 21, so that the nut 8 with completed tapping is automatically withdrawn.

[0042] Example 2: On the basis of Example 1, a pressure plate 26 is fixedly installed on one of the connecting brackets 17 on the secondary force-bearing plate 20. The pressure plate 26 is cast from spring steel, and the end of the pressure plate 26 is set against the upper surface of the feeding seat 2. The thickness value of the feeding seat 2 is consistent with the thickness value of the nut 8. The width value of the pressure plate 26 is greater than the inner hole size of the nut 8. When the nut 8 passes under the pressure plate 26, the pressure plate 26 completely covers the inner hole of the nut 8, making it easier for the nut 8 to fully enter the feeding port 12.

[0043] Example three: On the basis of Example two, a first-level bearing seat 27 and a second-level bearing seat 28 are fixedly installed on the lower surface of the processing platform 1, and a first-level rotating shaft 29 is rotatably installed on the first-level bearing seat 27 through a first-level bearing, and a second-level rotating shaft 30 is rotatably installed on the second-level bearing seat 28 through a second-level bearing. The first-level rotating shaft 29 and the second-level rotating shaft 30 are coaxially arranged, and the inner end of the second-level rotating shaft 30 is fixedly connected to an adapter seat 31, and the adapter seat 31 and the first-level rotating shaft 29 are transmission-connected via a ratchet structure 32. The inner end of the first-level rotating shaft 29 is fixedly connected to a first-level bevel gear 33, and a second-level bevel gear 34 is fixedly connected to the rotating shaft 6, and the first-level bevel gear 33 and the second-level bevel gear 34 are meshingly arranged.

[0044] The outer end of the secondary rotating shaft 30 is fixedly connected to the driven gear 35, and the lower surface of the connecting plate 11 is fixedly mounted with a rack seat 36, and the rack seat 36 is fixedly mounted with a transmission rack 38, and the transmission rack 38 is meshed with the driven gear 35. When the transmission rack 38 is pressed down, before the cutter head 39 contacts the nut 8, the transmission rack 38 is separated from the driven gear 35. During the process of the hydraulic mechanism 10 moving from the reset state to the separation of the transmission rack 38 from the driven gear 35, the feeding seat 2 rotates one-eighth of a circle.

[0045] During the downward pressing of the transmission rack 38, the transmission rack 38 drives the driven gear 35, thereby driving the secondary rotating shaft 30 to drive the primary rotating shaft 29 through the ratchet structure 32, and at this time, the feeding seat 2 rotates in the positive direction, and during the upward moving of the transmission rack 38, the secondary rotating shaft 30 cannot drive the primary rotating shaft 29 to rotate through the ratchet structure 32. A rack seat 36 with a transmission rack 38 is fixedly installed on the lower surface of the connecting plate 11, and a primary bearing seat 27 and a secondary bearing seat 28 are provided on the lower surface of the processing platform 1, and 27, a primary rotating shaft 29 is rotatably installed on the primary bearing, and a secondary rotating shaft 30 is rotatably installed on the secondary bearing seat 28 through a secondary bearing, and an adapter seat 31 is connected to the end of the secondary rotating shaft 30, and the adapter seat 31 is used to drive the primary rotating shaft 29 in one direction through the ratchet structure 32, thereby driving the driven gear 35 through the transmission rack 38, and then driving the primary rotating shaft 29, thereby driving the feeding seat 2 to move, and the feeding seat 2 is driven by the downward pressure of the tapping device 4, thereby reducing the required driving structure of the device, so as to facilitate daily circuit inspection and maintenance of the equipment.

[0046] Although the above describes the illustrative specific embodiments of the present application so that those skilled in the art can understand the present application, the present application is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations based on the concept of the present application are protected.

Claims

1. An internal tapping device for nut production, characterized in that: include: A processing platform (1), wherein the processing platform (1) is supported and positioned by a first-level support leg (5), a ball bearing (14) is fixedly installed at the center of the processing platform (1), and an air avoidance groove (15) and a material return port (16) are provided on the processing platform (1), and a guide plate (13) is fixedly installed on the side of the processing platform (1); A feeding seat (2), wherein the bottom of the feeding seat (2) is fixedly connected to a rotating shaft (6), and the rotating shaft (6) is rotatably mounted on the processing platform (1) via a ball bearing (14); and a feeding port (12) is provided on the feeding seat (2); A loading structure (3), the loading structure (3) is supported and positioned by secondary legs (7), the loading structure (3) is located at the left end of the processing platform (1), and the loading structure (3) is used to load the nut (8) to be processed; A tapping device (4) is provided, wherein a mounting bracket (9) is fixedly provided on the side of the processing platform (1), a hydraulic mechanism (10) is fixedly mounted on the mounting bracket (9), a connecting plate (11) is fixedly mounted on the telescopic rod of the hydraulic mechanism (10), and a main machine of the tapping device (4) is fixedly mounted on the connecting plate (11).

2. The internal hole tapping device for nut production according to claim 1, characterized in that: The cutter head (39) on the tapping device (4) is located directly above the avoidance groove (15); the feed port (12) is used to transport the nut (8) sent by the feeding structure (3) to directly below the tapping device (4), and to send the nut (8) processed by the tapping device (4) to the position of the return port (16) for return; eight feed ports (12) are provided on the feeding seat (2) on an equal circumference; the guide plate (13) is used to confine the nut (8) in the feed port (12), and the guide plate (13) does not extend to the position of the return port (16), and the other end of the guide plate (13) is aligned with the end side of the feeding structure (3).

3. The internal tapping device for nut production according to claim 2, characterized in that: The inner end surface of the feeding port (12) is provided with a movable groove (21), the upper side surface of the movable groove (21) is penetrated by a guide groove (22), a push seat (23) is movably installed in the movable groove (21), the inner end of the push seat (23) is fixedly connected with a support spring (24), the upper end surface of the push seat (23) is provided with a threaded hole (40), a force column (25) is threadedly connected in the threaded hole (40), the force column (25) is movably arranged in the guide groove (22), when the support spring (24) is in a reset state, the force column (25) abuts against the outer end of the guide groove (22), when the push seat (23) is completely pushed into the movable groove (21), the force column (25) abuts against the inner end of the guide groove (22).

4. The internal tapping device for nut production according to claim 3, characterized in that: A force-bearing member (18) is fixedly mounted on the side of the processing platform (1) via a connecting bracket (17). The force-bearing member (18) and the force-bearing column (25) are arranged at the same height. The force-bearing member (18) is used to limit the position of the force-bearing column (25).

5. The internal hole tapping device for nut production according to claim 4, characterized in that: The force-bearing member (18) includes a primary force-bearing plate (19) and a secondary force-bearing plate (20), wherein the primary force-bearing plate (19) is a straight plate. When the force-bearing column (25) moves to the end of the primary force-bearing plate (19), the force-bearing column (25) is located at the inner side end of the primary force-bearing plate (19). The secondary force-bearing plate (20) is an arc-shaped plate. When the force-bearing column (25) abuts against the inner side surface of the secondary force-bearing plate (20), the force-bearing column (25) abuts against the inner side end of the guide groove (22).

6. The internal hole tapping device for nut production according to claim 5, characterized in that: A pressure plate (26) is fixedly mounted on one of the connecting brackets (17) on the secondary force-bearing plate (20). The pressure plate (26) is cast from spring steel, and the end of the pressure plate (26) is arranged to abut against the upper surface of the feeding seat (2). The thickness of the feeding seat (2) is consistent with the thickness of the nut (8). The width of the pressure plate (26) is greater than the inner hole size of the nut (8). When the nut (8) passes under the pressure plate (26), the pressure plate (26) completely covers the inner hole of the nut (8).

7. The internal tapping device for nut production according to claim 6, characterized in that: A primary bearing seat (27) and a secondary bearing seat (28) are fixedly mounted on the lower surface of the processing platform (1); a primary rotating shaft (29) is rotatably mounted on the primary bearing seat (27) via a primary bearing; a secondary rotating shaft (30) is rotatably mounted on the secondary bearing seat (28) via a secondary bearing; the primary rotating shaft (29) and the secondary rotating shaft (30) are coaxially arranged; an adapter seat (31) is fixedly connected to the inner end of the secondary rotating shaft (30); the adapter seat (31) and the primary rotating shaft (29) are transmission-connected via a ratchet structure (32); a primary bevel gear (33) is fixedly connected to the inner end of the primary rotating shaft (29); a secondary bevel gear (34) is fixedly connected to the rotating shaft (6); and the primary bevel gear (33) and the secondary bevel gear (34) are meshed with each other.

8. The internal hole tapping device for nut production according to claim 7, characterized in that: The outer end of the secondary rotating shaft (30) is fixedly connected to a driven gear (35), the lower surface of the connecting plate (11) is fixedly mounted with a rack seat (36), a transmission rack (38) is fixedly mounted on the rack seat (36), and the transmission rack (38) is meshed with the driven gear (35).

9. The internal hole tapping device for nut production according to claim 8, characterized in that: When the transmission rack (38) is pressed down, before the cutter head (39) contacts the nut (8), the transmission rack (38) and the driven gear (35) are separated. During the process of the hydraulic mechanism (10) moving from the reset state to the separation of the transmission rack (38) and the driven gear (35), the feeding seat (2) rotates one-eighth of a turn.

10. The internal hole tapping device for nut production according to claim 9, characterized in that: During the downward pressing of the transmission rack (38), the transmission rack (38) drives the driven gear (35), thereby driving the secondary rotating shaft (30) to drive the primary rotating shaft (29) through the ratchet structure (32), and at this time, the feeding seat (2) rotates in the positive direction. During the upward moving of the transmission rack (38), the secondary rotating shaft (30) cannot drive the primary rotating shaft (29) to rotate through the ratchet structure (32).

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