Automatic nut tapping mechanism

Abstract

The utility model discloses an automatic nut tapping mechanism, and aims to provide an automatic nut tapping mechanism which is favorable for improving the production efficiency, the automatic nut tapping mechanism comprises a working table, a vibrating disk and a feeding track, the vibrating disk is positioned on the side surface of the working table, a plurality of nuts are arranged in the vibrating disk, and the working table is respectively connected with a tapping assembly and a tapping table which is arranged in a suspended manner; the tapping assembly is located on one side of the tapping table, the two ends of the feeding track are connected with the vibration disc and the other side of the tapping table respectively, nuts in the vibration disc are conveyed to the tapping table in sequence through the feeding track, the tapping table is provided with a tapping area corresponding to the tapping assembly, and the workbench is provided with a pushing mechanism and a limiting mechanism. The nut is conveyed into the tapping area through the pushing mechanism and then is limited through the limiting mechanism. The automatic tapping machine has the advantages that the control system is used for controlling all the components to operate so as to replace manual tapping, and the purpose of improving production efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field related to nut tapping processing, in particular to an automatic nut tapping mechanism. Background Art

[0002] Nuts are widely used in large industrial equipment and mechanical equipment. Their internal threads are used in conjunction with bolts. Their main function is to be used with fasteners. They are a kind of mechanical parts that transmit motion or power. At present, most common valve tapping machines have a relatively simple overall structure. The entire clamping and hole alignment work needs to be done manually. Not only is the overall work efficiency poor, but the phenomenon of skewed holes often occurs during use, resulting in a high overall scrap rate.

[0003] Current machining equipment mostly uses indexing plate clamping for nut tapping, which places high demands on the positioning accuracy of the workpiece and the coaxiality of the product. During the feeding process, the indexing plate clamping is prone to failure due to the large number of structural components. In addition, during the rotation of the indexing plate, it is difficult to ensure repeated positioning accuracy, which can easily cause material jamming and inadequate feeding, thus affecting the normal operation of the machine tool. In addition, the structure of the machine tool itself is complex, making it difficult to achieve low-cost and high-efficiency processing results.

[0004] With the development of society, especially the rapid development of industry and construction, various kinds of nuts have appeared, which need to be punched and tapped on the surface of raw materials, especially special-shaped nuts. Tapping operations or loading and unloading are generally manual operations, or semi-automatic tapping methods combining man and machine are used. Such operations are greatly affected by human factors, and long-term manual operation causes fatigue, resulting in undesirable phenomena such as missed tapping and shallow threads. The quality of the products is also difficult to control. At the same time, the labor cost of the production line is high and the production efficiency is low, which makes it difficult to improve the production efficiency of the enterprise. Utility Model Content

[0005] The utility model aims to overcome the shortcoming of low nut production efficiency in the prior art and provides a nut automatic tapping mechanism which is beneficial to improving production efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An automatic nut tapping mechanism, which comprises a workbench, a vibrating bowl and a feeding track. The vibrating bowl is located on the side of the workbench and several nuts are arranged therein. The workbench is respectively connected with a tapping assembly and a tapping table arranged in suspension. The tapping assembly is located on one side of the tapping table. The two ends of the feeding track are respectively connected with the vibrating bowl and the other side of the tapping table. The nuts in the vibrating bowl are sequentially conveyed to the tapping table through the feeding track. A tapping area corresponding to the tapping assembly is provided on the tapping table. A pushing mechanism and a limiting mechanism are provided on the workbench. The nuts are limited by the limiting mechanism after being conveyed to the tapping area through the pushing mechanism.

[0008] The vibrating bowl is located on the side of the workbench and several nuts are arranged therein. The workbench is respectively connected with a tapping assembly and a tapping table arranged in suspension. The tapping assembly is located on one side of the tapping table. The two ends of the feeding track are respectively connected with the vibrating bowl and the other side of the tapping table. The nuts in the vibrating bowl are sequentially conveyed to the tapping table through the feeding track. A tapping area corresponding to the tapping assembly is provided on the tapping table. A pushing mechanism and a limiting mechanism are provided on the workbench. The nuts are limited by the limiting mechanism after being conveyed to the tapping area through the pushing mechanism. Operators place a large number of nuts in the vibrating bowl. The control system controls the vibration and sorting of the vibrating bowl, and the nuts enter the feeding track one after another and slide into the corresponding area on the tapping table in sequence. Then the control system controls the pushing mechanism to push the nuts that have slid into the corresponding area of the tapping table towards the tapping area, and limits them through the limiting mechanism. Finally, the control system controls the tapping assembly to work and tap the limited nuts. By controlling the operation of each component through the control system to replace manual tapping, the purpose of improving production efficiency is achieved.

[0009] Preferably, longitudinal guide grooves and transverse guide grooves in a cross shape are respectively provided at the top of the tapping table. The longitudinal guide grooves are matched with the pushing mechanism, and the transverse guide grooves are matched with the limiting mechanism. The tapping area is located in the transverse guide grooves and is provided with avoidance holes corresponding to and matched with the tapping assembly. The top of the tapping table is provided with a feed groove connected to the feed track. The feed groove is parallel to the transverse guide groove and is located on the side of the longitudinal guide groove. The feed groove is communicated with the longitudinal guide groove. Columns are provided at the bottom of the tapping table. The tapping table is suspended on the workbench through the columns and is fixedly connected to the workbench. After nuts enter the feed track one after another, they are sequentially conveyed into the longitudinal guide grooves through the feed track, and then the control system controls the pushing mechanism to push the nuts along the longitudinal guide grooves to the intersection of the longitudinal guide grooves and the transverse guide grooves. Immediately afterwards, the control system controls the limiting mechanism to push the nuts into the tapping area along the transverse guide grooves and clamp and limit them. Finally, the control system controls the tapping assembly to feed downward to tap the nuts. Through the above settings of the longitudinal guide grooves and the transverse guide grooves, the nuts are conveyed in a certain direction, which is beneficial to improving the accuracy of the tapping position of the nuts; the avoidance holes facilitate the tapping operation of the tapping assembly on the nuts by providing an operating space.

[0010] Preferably, the pushing mechanism includes a pushing cylinder and a pressing cylinder. The pushing cylinder is located on the side of the tapping table and its bottom is detachably connected to the workbench. A feeding rod matched with the longitudinal guide groove is provided on the telescopic end of the pushing cylinder. The bottom of the pressing cylinder is detachably connected to the top of the pushing cylinder. A telescopic shaft is provided at the top of the pressing cylinder. A connecting rod is vertically provided on the side of the telescopic shaft. One end of the connecting rod is detachably and fixedly connected to the telescopic shaft. A pressing block is vertically provided at the other end of the connecting rod. The pressing block is detachably connected to the connecting rod and is vertically corresponding to the communication part of the feed groove and the longitudinal guide groove. The operator respectively sets the pushing stroke of the pushing cylinder and the movement stroke of the pressing cylinder through the control system; after the nuts are sequentially conveyed into the longitudinal tool groove through the feed track, the control system first controls the pressing cylinder to act forward, driving the pressing block to move downward to limit the nuts in the up and down direction, and then controls the pushing cylinder to work, and precisely pushes the nuts along the longitudinal guide groove to the intersection of the longitudinal guide groove and the transverse guide groove through the feeding rod. At this time, the control system controls the pressing cylinder to act reversely, driving the pressing block to move upward to release the limit on the nuts. During this process, the pressing cylinder drives the pressing block to limit the nuts in the up and down direction to improve the position accuracy of the nuts after being pushed.

[0011] Preferably, a limiting block is provided on the tapping table. The limiting block is located between the pushing cylinder and the feeding groove. The limiting block is detachably connected to the tapping table and straddles the opening end of the longitudinal guide groove. A limiting groove matching the connecting rod is provided on the limiting block. The connecting rod slides up and down along the depth direction of the limiting groove under the drive of the pressing cylinder. The limiting groove on the limiting block helps to ensure that the connecting rod always remains parallel to the longitudinal guide groove during the advancing process driven by the pushing cylinder, thereby facilitating the accurate up-and-down positioning of the nut.

[0012] Preferably, the depth of the longitudinal guide groove is greater than the depth of the transverse guide groove. One end of the feeding rod is connected to the telescopic end of the pushing cylinder. A groove flush with the transverse guide groove is provided on the side wall of the other end of the feeding rod. One end of the feeding track is connected to the vibrating disk, and the other end of the feeding track is connected to the groove. The pressing block is located in the groove. After the nuts are sequentially transported to the groove through the feeding track, the control system first controls the pressing cylinder to act forward, driving the pressing block to move downward to limit the nuts in the up-and-down direction. Then, it controls the pushing cylinder to work, and the nuts are accurately pushed along the longitudinal guide groove to the intersection of the longitudinal guide groove and the transverse guide groove through the feeding rod. At this time, the two ends of the groove are connected to the transverse guide groove. Then, it controls the pressing cylinder to act reversely, driving the pressing block to move upward to release the limit on the nuts. During this process, the pressing cylinder drives the pressing block to limit the nuts in the up-and-down direction to improve the position accuracy of the nuts after being pushed. Immediately afterwards, the control system controls the limiting mechanism to push the nuts in the groove along the transverse guide groove into the tapping area and clamp and limit them, facilitating the control system to control the tapping assembly to feed downward to tap the nuts. The design of the groove enables the nuts to be limited not only in the up-and-down direction but also in the front-and-back direction, further improving the position accuracy of the nuts after being pushed, thereby improving the accuracy of the tapping position.

[0013] Preferably, a blanking hole matching the nut is provided at the bottom of the longitudinal guide groove. The blanking hole is located at the intersection of the longitudinal guide groove and the transverse guide groove and on the side of the avoidance hole. A blanking port corresponding to the blanking hole is provided on the workbench. The blanking port is located on the side of the column. After tapping is completed, the limiting mechanism releases the limit on the nut and pushes it to the blanking hole, so that the nut falls into the collection box after passing through the blanking hole and the blanking port in sequence, eliminating the need for manual picking, which is beneficial to improving personal safety and operation convenience.

[0014] Preferably, the limiting mechanism includes cylinder one and cylinder two, which are respectively located outside the two ends of the transverse guide groove and are respectively detachably connected to the workbench, and the output end of cylinder one is provided with a push rod one which matches the transverse guide groove and the groove respectively, and the output end of cylinder two is provided with a push rod two which matches the transverse guide groove, and the end of push rod two is provided with a limiting groove which matches the nut. The operator sets the movement stroke of cylinder one and cylinder two respectively through the control system, which is beneficial to improve the position accuracy of the nut after being pushed, thereby improving the accuracy of the tapping position; when the nut is accurately pushed along the longitudinal guide groove to the cross intersection of the longitudinal guide groove and the transverse guide groove, the blanking hole is covered by the feeding rod, and the control system controls cylinder one to work forward, drives push rod one to move along the transverse guide groove and pushes the nut in the groove to the tapping area to disengage it from the groove, and the control system controls cylinder two to work forward, drives push rod two to move along the transverse guide groove to the tapping area and clamps the nut through the limit clamping groove, limits the tapping process, so as to improve the tapping accuracy; after the tapping is completed After completion, the control system controls cylinder one to work in the reverse direction, drives push rod one to retract and disengage from the groove and then return to the initial position in the transverse guide groove, so that the control system controls the feed rod on the push cylinder to retract, so that the blanking hole is exposed; the control system controls cylinder two to continue to work forward, and pushes the nut in the tapping area to the blanking hole so that it can be collected through the blanking hole, so that the nut can realize the entire process of automatic loading and unloading and automatic tapping, without human intervention throughout the process, which is beneficial to improving work efficiency while ensuring personal safety, and avoiding undesirable phenomena such as missing tapping and shallow threads due to fatigue caused by long-term manual operation, and the quality of the product is effectively controlled.

[0015] Preferably, the tapping assembly includes a telescopic cylinder and a tapping motor, the telescopic cylinder is detachably connected to the workbench and is located on the side of the tapping table, the telescopic end of the telescopic cylinder is detachably connected to a mounting frame, the tapping motor is detachably connected to the mounting frame, the output end of the tapping motor is detachably connected to a tapping tool perpendicular to the tapping area, the tapping tool matches the avoidance hole and corresponds to each other up and down, the workbench is connected to an oil injection pipe, and the oil injection pipe is provided with a nozzle corresponding to the tapping area. During tapping, the telescopic cylinder drives the tapping motor to move downward, and at the same time, the tapping motor drives the tapping tool to rotate at high speed to tap the nut. During the tapping process, the nozzle sprays oil on the nut, so that the tapping tool can better tap the nut.

[0016] Preferably, a proximity switch is provided on the feed track, and the proximity switch is electrically connected to the clamping cylinder. When the feed track pushes a nut forward, the proximity switch transmits a signal to the clamping cylinder through the control system, and the clamping cylinder moves forward, driving the pressure block downward to limit the nut in the up and down directions, and the response is sensitive and fast.

[0017] Preferably, a bracket with adjustable height is provided on the side of the workbench. The vibrating bowl is detachably mounted on the bracket. The feeding track is arranged obliquely, and the height of the end of the feeding track connected to the vibrating bowl is higher than the height of the other end connected to the tapping table. The inclined arrangement of the feeding track facilitates the smooth sliding of the nuts under the vibration of the vibrating bowl.

[0018] The beneficial effects of the present utility model are as follows: By controlling each component through a control system to perform operations to replace manual tapping, the purpose of improving production efficiency is achieved; Through the arrangement of the longitudinal guide groove and the transverse guide groove, the nuts are conveyed in a certain direction; The position accuracy of the nuts after being pushed is improved; The accuracy of the tapping position of the nuts is improved; Personal safety is ensured, and the phenomenon of missed tapping and shallow teeth caused by fatigue due to long-term manual operation is avoided, and the quality of the product is effectively controlled. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a schematic structural diagram on the tapping table;

[0021] Figure 3 is Figure 1 an enlarged structural view of part A in

[0022] Figure 4 is Figure 2 an enlarged structural view of part B in

[0023] In the figure: 1. Workbench, 2. Vibrating bowl, 3. Feeding track, 4. Nut, 5. Tapping assembly, 6. Tapping table, 7. Tapping area, 8. Pushing mechanism, 9. Limiting mechanism, 10. Longitudinal guide groove, 11. Transverse guide groove, 12. Avoidance hole, 13. Feeding groove, 14. Column, 15. Pushing cylinder, 16. Pressing cylinder, 17. Feeding rod, 18. Telescopic shaft, 19. Connecting rod, 20. Pressing block, 21. Limiting block, 22. Limiting groove, 23. Groove, 24. Blanking hole, 25. Blanking port, 26. Cylinder 1, 27. Cylinder 2, 28. Push rod 1, 29. Push rod 2, 30. Limiting card slot, 31. Telescopic cylinder, 32. Tapping motor, 33. Mounting bracket, 34. Tapping tool, 35. Oil spraying pipe, 36. Nozzle, 37. Proximity switch, 38. Bracket. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restricts the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components set forth in these embodiments do not limit the scope of the present application. For ease of explanation, spatial relative terms such as "upper", "lower", "left", and "right" are used in the embodiments to describe the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that in addition to the orientations shown in the figures, the spatial terms are intended to include different orientations during the use or operation of the device. For example, if the device in the figure is inverted, the element described as being "below" other elements or features will be fixed "above" other elements or features. Therefore, the exemplary term "lower" can include both upper and lower orientations. The device can be fixed in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein can be interpreted accordingly. At the same time, it should be understood that for the sake of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, processes, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, processes, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0027] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, these terms have no special meaning, so it should not be construed as a limitation on the protection scope of this application.

[0028] As Figure 1 and Figure 2 described in the embodiments, an automatic tapping mechanism for nuts includes a workbench 1, a vibrating bowl 2 and a feeding track 3. The vibrating bowl 2 is located on the side of the workbench 1 and several nuts 4 are arranged therein. An tapping assembly 5 and a suspended tapping table 6 are respectively connected to the workbench 1. The tapping assembly 5 is located on one side of the tapping table 6. Both ends of the feeding track 3 are respectively connected to the vibrating bowl 2 and the other side of the tapping table 6. The nuts 4 in the vibrating bowl 2 are sequentially conveyed to the tapping table 6 through the feeding track 3. A tapping area 7 corresponding to the tapping assembly 5 is provided on the tapping table 6. A pushing mechanism 8 and a limiting mechanism 9 are provided on the workbench 1. After the nut 4 is conveyed into the tapping area 7 through the pushing mechanism 8, it is limited by the limiting mechanism 9.

[0029] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, longitudinal guide grooves 10 and transverse guide grooves 11 in a cross shape are respectively provided at the top of the tapping table 6. The longitudinal guide grooves 10 are matched with the pushing mechanism 8, and the transverse guide grooves 11 are matched with the limiting mechanism 9. The tapping area 7 is located in the transverse guide grooves 11 and is provided with avoidance holes 12 corresponding to and matched with the tapping assembly 5. A feeding groove 13 connected to the feeding track 3 is provided at the top of the tapping table 6. The feeding groove 13 is parallel to the transverse guide grooves 11 and is located on the side of the longitudinal guide grooves 10. The feeding groove 13 is communicated with the longitudinal guide grooves 10. A column 14 is provided at the bottom of the tapping table 6. The tapping table 6 is suspended on the workbench 1 through the column 14 and is fixedly connected to the workbench 1.

[0030] As Figure 2 and Figure 3 shown, the pushing mechanism 8 includes a pushing cylinder 15 and a pressing cylinder 16. The pushing cylinder 15 is located on the side of the tapping table 6 and its bottom is detachably connected to the workbench 1. A feeding rod 17 matched with the longitudinal guide grooves 10 is provided on the telescopic end of the pushing cylinder 15. The bottom of the pressing cylinder 16 is detachably connected to the top of the pushing cylinder 15. A telescopic shaft 18 is provided at the top of the pressing cylinder 16. A connecting rod 19 is vertically provided on the side of the telescopic shaft 18. One end of the connecting rod 19 is detachably and fixedly connected to the telescopic shaft 18. A pressing block 20 is vertically provided at the other end of the connecting rod 19. The pressing block 20 is detachably connected to the connecting rod 19 and is vertically corresponding to the communication part of the feeding groove 13 and the longitudinal guide grooves 10.

[0031] As Figure 3As shown, a limit block 21 is provided on the tapping table 6. The limit block 21 is located between the pushing cylinder 15 and the feeding groove 13. The limit block 21 is detachably connected to the tapping table 6 and straddles the opening end of the longitudinal guide groove 10. A limit groove 22 matching the connecting rod 19 is provided on the limit block 21. The connecting rod 19 slides up and down along the depth direction of the limit groove 22 under the drive of the pressing cylinder 16.

[0032] As Figure 2 shown, the depth of the longitudinal guide groove 10 is greater than the depth of the transverse guide groove 11. One end of the feeding rod 17 is connected to the telescopic end of the pushing cylinder 15. A groove 23 flush with the transverse guide groove 11 is provided on the side wall of the other end of the feeding rod 17. One end of the feeding track 3 is connected to the vibrating disk 2, and the other end of the feeding track 3 is connected to the groove 23. The pressing block 20 is located in the groove 23.

[0033] As Figure 1 and Figure 2 shown, a blanking hole 24 matching the nut 4 is provided at the bottom of the longitudinal guide groove 10. The blanking hole 24 is located at the intersection of the longitudinal guide groove 10 and the transverse guide groove 11 and on the side of the avoidance hole 12. A blanking port 25 corresponding to the blanking hole 24 is provided on the workbench 1. The blanking port 25 is located on the side of the column 14.

[0034] As Figure 1 、 Figure 2 and Figure 4 shown, the limiting mechanism 9 includes a cylinder one 26 and a cylinder two 27. The cylinder one 26 and the cylinder two 27 are respectively located outside the two ends of the transverse guide groove 11 and are respectively detachably connected to the workbench 1. A push rod one 28 matching the transverse guide groove 11 and the groove 23 is provided on the output end of the cylinder one 26. A push rod two 29 matching the transverse guide groove 11 is provided on the output end of the cylinder two 27. A limiting card slot 30 matching the nut 4 is provided at the end of the push rod two 29.

[0035] As Figure 1 shown, the tapping assembly 5 includes a telescopic cylinder 31 and a tapping motor 32. The telescopic cylinder 31 is detachably connected to the workbench 1 and is located on the side of the tapping table 6. An installation frame 33 is detachably connected to the telescopic end of the telescopic cylinder 31. The tapping motor 32 is detachably connected to the installation frame 33. A tapping tool 34 perpendicular to the tapping area 7 is detachably connected to the output end of the tapping motor 32. The tapping tool 34 matches the avoidance hole 12 and corresponds up and down. A fuel injection pipe 35 is connected to the workbench 1, and a nozzle 36 corresponding to the tapping area 7 is provided on the fuel injection pipe 35. A proximity switch 37 is provided on the feeding track 3, and the proximity switch 37 is electrically connected to the pressing cylinder 16. A bracket 38 with adjustable height is provided on the side of the workbench 1. The vibrating disk 2 is detachably installed on the bracket 38. The feeding track 3 is arranged obliquely, and the height of the end of the feeding track 3 connected to the vibrating disk 2 is higher than the height of the end connected to the tapping table 6.

[0036] Example 1: The operator sets the pushing stroke of the pushing cylinder 15 and the moving stroke of the pressing cylinder 16 respectively through the control system; during operation, the operator places a large number of nuts 4 in the vibrating bowl 2. The control system sorts out the nuts 4 by controlling the vibration of the vibrating bowl 2, and the nuts 4 successively enter the feeding track 3 and slide down into the longitudinal guide groove 10 on the tapping table 6 in sequence; the control system first controls the pressing cylinder 16 to act forward, driving the pressure block 20 to move downward to limit the nut 4 in the up and down directions, and then controls the pushing cylinder 15 to work. The nut 4 is accurately pushed along the longitudinal guide groove 10 to the intersection of the longitudinal guide groove 10 and the transverse guide groove 11 by the feeding rod 17. At this time, the control system controls the pressing cylinder 16 to act in the reverse direction, driving the pressure block 20 to move upward to release the limit on the nut 4. During this process, the pressing cylinder 16 drives the pressure block 20 to limit the nut 4 in the up and down directions to improve the position accuracy of the nut 4 after being pushed. The limiting groove 22 on the limiting block 21 helps to ensure that the connecting rod 19 always remains parallel to the longitudinal guide groove 10 during the advancing process driven by the pushing cylinder 15, thus helping to ensure the accurate up and down limit of the nut 4. Immediately afterwards, the control system controls the limiting mechanism 9 to push the nut 4 into the tapping area 7 along the transverse guide groove 11 and clamp and limit it. Finally, the control system controls the tapping assembly 5 to feed downward to tap the nut 4. Through the settings of the longitudinal guide groove 10 and the transverse guide groove 11, the nut 4 is conveyed in a certain direction, which helps to improve the accuracy of the tapping position of the nut 4.

[0037] Furthermore, the present utility model also provides Embodiment 2: The operator respectively sets the pushing stroke of the pushing cylinder 15, the movement strokes of the pressing cylinder 16, the first cylinder 26 and the second cylinder 27 through the control system; during operation, the operator places a large number of nuts 4 in the vibrating disk 2, and the control system sorts them out by controlling the vibration of the vibrating disk 2. The nuts 4 successively enter the feeding track 3 and slide into the groove 23 on the feeding rod 17 in sequence; the control system first controls the pressing cylinder 16 to act forward, driving the pressing block 20 to move downward to limit the nut 4 in the up and down directions, and then controls the pushing cylinder 15 to work. The nut 4 is precisely pushed along the longitudinal guide groove 10 to the intersection of the longitudinal guide groove 10 and the transverse guide groove 11 by the feeding rod 17. The blanking hole 24 is covered by the feeding rod 17. At this time, the groove 23 connects the two ends of the transverse guide groove 11. Then, the control system controls the pressing cylinder 16 to act reversely, driving the pressing block 20 to move upward to release the limit on the nut 4; the control system controls the first cylinder 26 to work forward, driving the first push rod 28 to move along the transverse guide groove 11 and pushing the nut 4 in the groove 23 to the tapping area 7, so that it is separated from the groove 23. At the same time, the control system controls the second cylinder 27 to work forward, driving the second push rod 29 to move into the tapping area 7 along the transverse guide groove 11 and clamping the nut 4 through the limit card slot 30 to limit it during the tapping process to improve the tapping accuracy; after tapping is completed, the control system controls the first cylinder 26 to work reversely, driving the first push rod 28 to retract and withdraw from the groove 23 and then return to the initial position in the transverse guide groove 11, facilitating the control system to control the feeding rod 17 on the pushing cylinder 15 to retract, so that the blanking hole 24 is exposed; the control system controls the second cylinder 27 to continue to work forward, pushing the nut 4 in the tapping area 7 to the blanking hole 24 to make it fall and be collected through the blanking hole 24. Thus, the nut 4 can complete the entire process of automatic loading and unloading and automatic tapping without any manual intervention, improving work efficiency, ensuring personal safety, and avoiding bad phenomena such as missed tapping and shallow teeth caused by fatigue during long-term manual operation. The quality of the product is effectively controlled.

[0038] During tapping, the telescopic cylinder 31 drives the tapping motor 32 to move downward. At the same time, the tapping motor 32 drives the tapping tool 34 to rotate at high speed to tap the nut 4. During the tapping process, the nozzle 36 sprays oil on the nut 4 to facilitate the tapping tool 34 to better tap the nut 4.

[0039] When the feeding track 3 pushes forward one nut 4 each time, the proximity switch 37 transmits a signal to the pressing cylinder 16 through the control system, and the pressing cylinder 16 acts forward, driving the pressing block 20 to move downward to limit the nut 4 in the up and down directions, with sensitive and fast response.

Claims

1. A nut automatic tapping mechanism, characterized in that: The invention comprises a workbench (1), a vibration plate (2) and a feed track (3), wherein the vibration plate (2) is located on the side of the workbench (1) and has a plurality of nuts (4) arranged therein, the workbench (1) is respectively connected with a tapping assembly (5) and a suspended tapping table (6), the tapping assembly (5) is located on one side of the tapping table (6), the two ends of the feed track (3) are respectively connected with the vibration plate (2) and the other side of the tapping table (6), the nuts (4) in the vibration plate (2) are sequentially transported to the tapping table (6) through the feed track (3), the tapping table (6) is provided with a tapping area (7) corresponding to the tapping assembly (5), the workbench (1) is provided with a pushing mechanism (8) and a limiting mechanism (9), the nuts (4) are transported to the tapping area (7) through the pushing mechanism (8) and then limited by the limiting mechanism (9). The top of the tapping table (6) is respectively provided with a longitudinal guide groove (10) and a transverse guide groove (11) in a cross shape, the longitudinal guide groove (10) matches the pushing mechanism (8), the transverse guide groove (11) matches the limiting mechanism (9), the tapping area (7) is located in the transverse guide groove (11) and is provided with an avoidance hole (12) corresponding to the tapping assembly (5), the top of the tapping table (6) is provided with a feed groove (13) connected to the feed track (3), the feed groove (13) and the transverse guide groove (11) are parallel to each other and are located on the side of the longitudinal guide groove (10), the feed groove (13) is connected with the longitudinal guide groove (10), and the bottom of the tapping table (6) is provided with a column (14), and the tapping table (6) is suspended on the workbench (1) through the column (14) and is fixedly connected to the workbench (1).

2. The automatic nut tapping mechanism according to claim 1, characterized in that: The pushing mechanism (8) comprises a pushing cylinder (15) and a pressing cylinder (16). The pushing cylinder (15) is located on the side of the tapping table (6) and its bottom is detachably connected to the workbench (1). A feeding rod (17) matching the longitudinal guide groove (10) is provided on the telescopic end of the pushing cylinder (15). The bottom of the pressing cylinder (16) is detachably connected to the top of the pushing cylinder (15). A telescopic shaft (18) is provided on the top of the pressing cylinder (16). A connecting rod (19) is vertically provided on the side of the telescopic shaft (18). One end of the connecting rod (19) is detachably fixedly connected to the telescopic shaft (18). The other end of the connecting rod (19) is vertically provided with a pressing block (20). The pressing block (20) is detachably connected to the connecting rod (19) and corresponds to the connection between the feed groove (13) and the longitudinal guide groove (10) in the upper and lower directions.

3. The automatic nut tapping mechanism according to claim 2, characterized in that: The tapping table (6) is provided with a limit block (21), the limit block (21) is located between the pushing cylinder (15) and the feeding groove (13), the limit block (21) is detachably connected to the tapping table (6) and spans the open end of the longitudinal guide groove (10), the limit block (21) is provided with a limit groove (22) matching the connecting rod (19), and the connecting rod (19) slides up and down along the depth direction of the limit groove (22) under the drive of the clamping cylinder (16).

4. The automatic nut tapping mechanism according to claim 2, characterized in that: The depth of the longitudinal guide groove (10) is greater than the depth of the transverse guide groove (11); one end of the feed rod (17) is connected to the telescopic end of the push cylinder (15); the other end of the feed rod (17) is provided with a groove (23) flush with the transverse guide groove (11); one end of the feed track (3) is connected to the vibration plate (2); the other end of the feed track (3) is connected to the groove (23); and the pressure block (20) is located in the groove (23).

5. A nut automatic tapping mechanism according to claim 1, 2, 3 or 4, characterized in that: A blanking hole (24) matching the nut (4) is provided at the bottom of the longitudinal guide groove (10), and the blanking hole (24) is located at the intersection of the longitudinal guide groove (10) and the transverse guide groove (11) and at the side of the avoidance hole (12). A blanking opening (25) corresponding to the blanking hole (24) is provided on the workbench (1), and the blanking opening (25) is located at the side of the column (14).

6. The automatic nut tapping mechanism according to claim 4, characterized in that: The limiting mechanism (9) comprises a cylinder 1 (26) and a cylinder 2 (27), wherein the cylinder 1 (26) and the cylinder 2 (27) are respectively located outside the two ends of the transverse guide groove (11) and are respectively detachably connected to the workbench (1), and the output end of the cylinder 1 (26) is provided with a push rod 1 (28) which matches the transverse guide groove (11) and the groove (23) respectively, and the output end of the cylinder 2 (27) is provided with a push rod 2 (29) which matches the transverse guide groove (11), and the end of the push rod 2 (29) is provided with a limiting groove (30) which matches the nut (4).

7. A nut automatic tapping mechanism according to claim 1, 2, 3 or 4, characterized in that: The tapping assembly (5) comprises a telescopic cylinder (31) and a tapping motor (32); the telescopic cylinder (31) is detachably connected to the workbench (1) and is located on the side of the tapping table (6); a mounting frame (33) is detachably connected to the telescopic end of the telescopic cylinder (31); the tapping motor (32) is detachably connected to the mounting frame (33); a tapping tool (34) perpendicular to the tapping area (7) is detachably connected to the output end of the tapping motor (32); the tapping tool (34) matches the avoidance hole (12) and corresponds to each other in the upper and lower directions; an oil injection pipe (35) is connected to the workbench (1); and a nozzle (36) corresponding to the tapping area (7) is provided on the oil injection pipe (35).

8. A nut automatic tapping mechanism according to claim 2, 3 or 4, characterized in that: A proximity switch (37) is provided on the feed track (3), and the proximity switch (37) is electrically connected to the clamping cylinder (16).

9. The automatic nut tapping mechanism according to claim 1, characterized in that: A height-adjustable bracket (38) is provided on the side of the workbench (1), the vibration plate (2) is detachably mounted on the bracket (38), the feed track (3) is arranged in an inclined manner, and the height of one end of the feed track (3) connected to the vibration plate (2) is higher than the height of the other end connected to the tapping table (6).

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