Nut press fitting equipment

Abstract

The nut press-fitting equipment is characterized in that the nut press-fitting equipment comprises a feeding module, a finishing module, an adjusting module and a press-fitting module which are arranged in sequence from a first station to a fourth station, so that the feeding, finishing, hole adjusting and nut press-fitting in the nut press-fitting process are all standardized, the labor cost is reduced, the nut press-fitting quality is ensured, and the nut press-fitting efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of seat processing, in particular to a nut press-fitting equipment. BACKGROUND

[0002] The structural support in the seat or back of the e-sports chair on the market is usually called seat frame or back frame, which is usually a frame structure welded by a plurality of steel pipes. In order to stably connect the seat frame or back frame in the seat or back, a screw hole needs to be formed on the steel pipe. However, the wall of the steel pipe is thin, and the connection depth of the thread is insufficient. Therefore, a press-in hole is usually formed on the outer wall of the steel pipe in advance, and a threaded nut is press-fitted into the press-in hole by a riveting machine.

[0003] However, the nut press-fitting needs to go through a plurality of processes such as feeding, finishing, hole position adjustment, nut press-fitting, etc. That is, the steel pipe cut and processed with holes is fed one by one, and then the impurities in the inner wall of the steel pipe are cleaned. The impurities refer to the round plate-shaped waste falling into the steel pipe when the steel pipe is laser cut and press-fitted. Then, the steel pipe after cleaning is adjusted in hole position, so that the press-in holes on the steel pipe are adjusted to be uniformly oriented, so as to facilitate the next step of nut press-fitting. These processing processes are currently completed by manual operation or manual operation of equipment. The processed steel pipe is transferred to the next station until the nut press-fitting is completed. However, this production method relying on manual operation has high cost, consumes a lot of time, and is prone to quality problems such as incomplete processing and uncorrected hole position due to human negligence, resulting in poor press-fitting quality of the nut on the steel pipe and affecting the production efficiency of the nut press-fitting. SUMMARY

[0004] In order to solve the above technical problems, the purpose of the present application is to provide a nut press-fitting equipment, which realizes standardized processing in the feeding, finishing, hole position adjustment, nut press-fitting and other processing steps in the nut press-fitting process by arranging the processing modules at each station in sequence, reduces the labor cost, ensures the nut press-fitting quality, and improves the press-fitting efficiency of the nut.

[0005] The technical scheme of the present application is as follows:

[0006] A nut press-fitting equipment, comprising:

[0007] A feeding module at a first station, comprising a feeding mechanism for feeding the steel pipes one by one; a pushing mechanism connected to the end of the feeding mechanism, and an feeding slot provided beside the pushing mechanism; the pushing mechanism comprises a pushing drive mechanism and a pushing plate, the pushing drive mechanism is connected to the pushing plate and can drive the pushing plate to push the steel pipes fed to the end of the feeding mechanism one by one away from the feeding mechanism, so that the steel pipes enter the feeding slot one by one;

[0008] The finishing module is located at the second station and includes a first support assembly for carrying the steel pipe, a slide rod matched with the inner cavity profile of the steel pipe, and a finishing drive assembly connected with the slide rod. The finishing drive assembly can drive the slide rod to be inserted into the inner cavity of the steel pipe along the length direction of the steel pipe.

[0009] The adjusting module is located at the third station and includes a second support assembly for carrying the steel pipe. An adjusting mechanism is arranged above the second support assembly. The adjusting mechanism includes a drive assembly and a pickup assembly. The pickup assembly can pick up the steel pipe from the support assembly when the press-in hole of the steel pipe does not conform to the predetermined orientation, so as to separate the steel pipe from the second support assembly. The drive assembly can drive the pickup assembly to overturn the steel pipe after the steel pipe is separated from the second support assembly, so as to adjust the press-in hole of the steel pipe to the predetermined orientation.

[0010] The press-fitting module is located at the fourth station and includes a support mechanism for supporting the steel pipe. The support mechanism includes a fixed support assembly and a movable support assembly. The movable support assembly includes a movable seat and a power assembly connected with the movable seat. The power assembly can drive the movable seat to move along the longitudinal direction after the nut is pressed into the press-in hole of the steel pipe, so as to separate the steel pipe from the support mechanism.

[0011] Preferably, the material conveying mechanism includes a conveying belt at the upper end. A material blocking mechanism is arranged at the end of the conveying belt. The material blocking mechanism includes a baffle facing the conveying direction of the steel pipe. A material blocking gap is formed between the lower end of the baffle and the conveying belt. The material blocking gap can block the steel pipe while allowing the waste material on the conveying belt to pass through, so as to avoid the waste material from being stranded or accumulated on the conveying belt.

[0012] Preferably, the upper end of the baffle is connected with a material blocking cylinder. The material blocking cylinder can control the longitudinal movement of the baffle by its own longitudinal extension and retraction, so as to change the width of the material blocking gap. The changing width of the material blocking gap can block the steel pipes of different thickness specifications, thereby improving the versatility of the material blocking mechanism.

[0013] Preferably, the first support assembly includes two oppositely arranged first vertical plates. A receiving groove for placing and carrying the steel pipe is formed between the first vertical plates. The length direction of the receiving groove is the same as the length direction of the steel pipe in the receiving groove.

[0014] Preferably, a punching telescopic assembly corresponding to the press-in hole position of the steel pipe is further horizontally connected to the first vertical plate. The punching telescopic assembly can horizontally extend to punch the press-in hole of the steel pipe, so as to punch the round plate-shaped waste material that is not separated from the steel pipe into the inner cavity of the steel pipe, thereby facilitating the next cleaning of the slide rod.

[0015] As preferred, the finishing module further comprises a sliding support base supporting the slide bar, and a power mechanism connected to the sliding support base, the power mechanism being capable of driving the sliding support base to push against the end of the steel pipe towards the sliding support base along the length direction of the steel pipe until the press-in hole of the steel pipe is aligned with the punching telescopic assembly; the sliding support base is both a support for the slide bar and an acting member for positioning the steel pipe along its length, and through the driving of the power mechanism, the sliding support base can support the slide bar while acting on the end of the steel pipe to align the punching telescopic assembly with the press-in hole of the steel pipe.

[0016] As preferred, the finishing module further comprises a telescopic positioning assembly on the opposite side of the sliding support base, the telescopic positioning assembly being horizontally connected to the first vertical plate; when the press-in hole of the steel pipe is aligned with the punching telescopic assembly, the telescopic positioning assembly can extend into the accommodating groove and abut against the end of the steel pipe towards the telescopic positioning assembly; the telescopic positioning assembly can block the steel pipe from continuing to slide along its length direction after aligning the press-in hole of the steel pipe with the punching telescopic assembly, thereby avoiding misalignment between the press-in hole of the steel pipe and the punching telescopic assembly.

[0017] As preferred, the driving assembly is a rotary air cylinder, and the picking assembly is a second clamping jaw connected to the lower end of the rotary air cylinder; the rotary air cylinder has simple structure and occupies small space, and can realize circumferential rotation control of the second clamping jaw.

[0018] As preferred, the finishing module further comprises a first conveying assembly for conveying the finished steel pipe from the first work station to the second work station, the first conveying assembly comprising a first clamping jaw and a driving mechanism for driving the first clamping jaw to move; the driving mechanism can drive the first clamping jaw to convey the steel pipe between the feeding groove and the finishing module, so that the steel pipes in the feeding groove are moved one by one to the finishing module.

[0019] As preferred, the first clamping jaw and the adjusting mechanism are both connected to the driving mechanism; the driving mechanism can drive the first clamping jaw to transfer the steel pipe on the first work station to the second work station, while driving the second clamping jaw to convey the steel pipe on the second work station to the third work station; the driving mechanism can realize synchronous conveying of the steel pipes on different work stations by simultaneously driving the first clamping jaw and the adjusting mechanism, thereby improving the conveying efficiency of the steel pipes.

[0020] As preferred, a second adjusting module identical in structure to the adjusting module is arranged between the third work station and the fourth work station; the second adjusting module can form double detection with the adjusting module to avoid the detection-missed steel pipe from entering the fourth work station.

[0021] As preferred, the adjusting module further comprises a controller electrically connected with the driving assembly, a hole position detecting assembly for identifying the orientation of the press-in hole of the steel pipe, the hole position detecting assembly comprising a detecting telescopic rod corresponding to the position of the press-in hole of the steel pipe, and a sensing assembly electrically connected with the controller, the detecting telescopic rod being matched with the size of the press-in hole and being capable of penetrating through the press-in hole; the detecting telescopic rod is capable of extending to the press-in hole for hole position detection, and different extension lengths are formed according to whether the detecting telescopic rod can penetrate through the press-in hole or not, the sensing assembly is capable of generating corresponding detection signals according to the extension length of the detecting telescopic rod, and the controller is capable of judging whether to control the driving assembly to drive the pickup assembly to adjust the hole position of the steel pipe after receiving the corresponding detection signals; the hole position identifying assembly is capable of detecting whether the orientation of the press-in hole of the steel pipe is correct or not, and sending the detection result back to the controller through the sensing assembly, so that the controller processes the next step for the steel pipe with correct orientation of the press-in hole and adjusts the hole position for the steel pipe with incorrect orientation of the press-in hole.

[0022] The principle and beneficial effects of the application adopting the above technical scheme are:

[0023] The nut press-fitting equipment provided by the application realizes standardized processing in the processing steps such as feeding, finishing, hole position adjustment, nut press-fitting, etc. in the nut press-fitting process, reduces the labor cost, avoids problems such as incomplete processing and omitted processing process caused by human negligence, guarantees the quality of nut press-fitting, and improves the efficiency of nut press-fitting. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 Fig. 1 is a structural schematic view of the nut press-fitting equipment;

[0025] Figure 2 Fig. 5 is an enlarged view of the components on the press-fitting module;

[0026] Figure 3 Fig. 6 is an enlarged view of the guide column penetrating through the steel pipe on the press-fitting module;

[0027] Figure 4 Fig. 7 is an enlarged view of the components in the feeding module;

[0028] Figure 5 Fig. 8 is an enlarged view of the components on the feeding module, the finishing module and the correction module;

[0029] Figure 6 Fig. 9 is a structural view of the components on the finishing module;

[0030] Figure 7 Fig. 10 is a structural view of the components on the finishing module from another perspective;

[0031] Figure 8 Fig. 11 is a structural schematic view of the components on the second supporting assembly in the correction module;

[0032] Figure 9 A structural cross-sectional view of the guide assembly;

[0033] Figure 10 Schematic diagram of various hole positions on the steel pipe;

[0034] Figure 11a This is a cross-sectional view of the nut in the press-fit hole before press-fitting;

[0035] Figure 11b This is a cross-sectional view of the nut in the press-fit hole after press-fitting;

[0036] The figures are marked as follows: 1-feeding module, 2-pretreatment module, 3-pressing module, 11-guide plate, 12-pushing mechanism, 13-conveyor belt, 14-blocking mechanism, 21-finishing module, 22-adjusting module, 23-first clamping jaw, 24-driving mechanism, 25-secondary adjustment module, 26-driving assembly, 31-fixed seat, 32-power assembly, 33-movable seat, 33b-limiting column, 34-elastic member, 35-connecting nut, 36-guide Toward assembly, 37-sliding column, 38-base, 40-riveting machine, 111-guide groove, 112-first sensor, 113-second sensor, 121-horizontal support plate, 122-push drive mechanism, 123-horizontal cross plate, 124-push plate, 125-connecting plate, 126-slide rail, 141-baffle, 142-blocking cylinder, 143-sliding column, 144-adapter, 151-loading chute, 152-third sensor, 153 -connecting plate, 211-finishing drive assembly, 211a-finishing telescopic rod, 212-material collecting enclosure, 213-sliding block, 214-sliding rod, 215-sliding support seat, 216-power mechanism, 217-telescopic positioning assembly, 217a-second telescopic positioning assembly, 218-punching telescopic assembly, 219-accommodating groove, 219a-support rod, 219b-limiting block, 219c-first vertical plate, 221-picking assembly, 222-pushing block, 223-push cylinder, 224-sensor, 225-detection cylinder, 226-sensing assembly, 227-second vertical plate, 228-second accommodating groove, 321-longitudinal telescopic rod, 331-first limiting groove, 361-guide column, 362-guide head, 363-accommodating area, 364-adjustment part, 365-mold groove, 366-press-fitting seat, 367-base, 391-second limiting groove, a-threaded section, b-flanged section, s-guide slope. DETAILED DESCRIPTION

[0037] In order to enable the above-mentioned objects, features and advantages of the present application to be clearer, the following further describes the present application in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0038] In the description of the present application, the term "at least one" refers to one or more than one, unless otherwise explicitly limited. The terms "first", "second", "third", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0039] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0040] The specific embodiments of the present application are as follows:

[0041] The present embodiment provides a nut press-fitting device, which comprises a feeding module 1, a pretreatment module 2 and a press-fitting module 3, wherein the pretreatment module 2 comprises a finishing module 21 and an adjusting module 22, and these modules are integrated into a set of standardized working equipment in the device, thereby improving the efficiency and quality of nut press-fitting.

[0042] As shown in Figures 10-11b , the press-fitted nut can be a common press-in rivet nut or an embossed nut in the present embodiment, the embossed nut in the present embodiment comprises a threaded segment a at the upper end and a flange segment b at the lower end, the preset hole of the steel pipe comprises two press-in holes and a through hole located on the opposite pipe walls of the steel pipe, the diameter of the press-in hole is larger than that of the through hole, during the press-fitting of the nut, the flange segment b of the nut is first put into the press-in hole, and then protrudes downward through the through hole to contact the workbench, and then the press-fitting machine 40 will extrude the nut downward to make the flange segment b burst downward and be fixed on the pipe wall of the steel pipe.

[0043] As shown in Figures 1-9 , the device comprises a feeding module 1, the feeding module 1 is at the first station, and it comprises a feeding mechanism for feeding the steel pipes one by one, and the feeding mechanism is usually a belt conveyor; a pushing mechanism 12 is connected at the end of the feeding mechanism, the pushing mechanism 12 comprises a pushing drive mechanism 122 and a pushing plate 124, the pushing drive mechanism 122 is connected with the pushing plate 124 and can drive the pushing plate 124 to push the steel pipes fed to the end of the feeding mechanism away from the feeding mechanism one by one, a feeding chute 151 is provided beside the pushing mechanism 12, wherein the feeding chute 151 and the end of the feeding mechanism are provided with a connecting plate 153, the connecting plate 153 extends obliquely downward from the end of the feeding mechanism to the feeding chute 151, so as to slow down the falling speed of the steel pipes, thereby making the steel pipes enter the feeding chute 151 one by one at a stable speed.

[0044] Further, the feeding mechanism includes a conveying belt 13 at the upper end, and a blocking mechanism 14 is arranged at the end of the conveying belt 13 to block the steel pipes one by one. The blocking mechanism 14 includes a blocking plate 141 facing the conveying direction of the steel pipes, and a gap (not shown) is formed between the lower end of the blocking plate 141 and the conveying belt 13. The gap can allow the waste on the conveying belt 13 to pass through while blocking the steel pipes, thereby avoiding the accumulation of waste at the upper end of the conveying belt 13.

[0045] Further, a blocking cylinder 142 is connected to the upper end of the blocking plate 141. The blocking cylinder 142 can control the longitudinal movement of the blocking plate 141 by its own longitudinal extension and contraction, thereby changing the width of the gap. Specifically, the blocking cylinder 142 includes a longitudinally extendable and retractable piston rod, which is threadedly connected to the upper middle part of the blocking plate 141 through an adapter 144. Under the driving of the blocking cylinder 142, the changing width of the gap can block steel pipes of different thicknesses, thereby improving the versatility of the blocking mechanism 14.

[0046] Further, in order to save space, the blocking cylinder 141 and the pushing driving mechanism 122 are arranged on the same support carrier, which is a horizontal support plate 121 arranged at the end of the feeding mechanism. Four feet are extended downward from the four diagonal positions of the lower end of the horizontal support plate 121, and the four feet are connected to the edge of the feeding mechanism without contacting the upper end of the conveying belt 13. The pushing driving mechanism 122 is a pushing cylinder connected to the upper end of the horizontal support plate 121. In order to facilitate the pushing, a guide rail 126 perpendicular to the conveying direction of the steel pipes is arranged on the lower surface of the horizontal support plate 121. A horizontal cross plate 123 is connected to the guide rail 126. One end of the horizontal cross plate 123 close to the pushing cylinder is connected to the pushing cylinder through a vertical mounting plate 125. The other end of the horizontal cross plate 123 away from the pushing cylinder is vertically connected to a pushing plate 124 which does not contact the conveying belt 13. The blocking cylinder 141 is connected to the horizontal support plate 121 adjacent to the pushing cylinder. The longitudinal extension rod of the blocking cylinder can pass through the horizontal support plate 121 and be connected to the blocking plate 141 below.

[0047] Further, in order to make the blocking plate 141 more stable when moving longitudinally, a sliding column 143 is arranged between the upper end of the blocking plate 141 and the horizontal support plate 121. The upper end of the sliding column 143 passes through the horizontal support plate 121 and forms a sliding connection with the horizontal support plate 121. The sliding column 143 can prevent the blocking plate 141 from horizontally deflecting when moving up and down, so that the blocking plate 141 only moves in the vertical direction.

[0048] Further, in order to make the multiple steel pipes with different angles be conveyed in the same direction on the conveying belt 13, a guide groove 111 extending along the conveying direction of the steel pipes is arranged on the feeding mechanism, the guide groove 111 is formed by two horizontally opposite guide plates 11 arranged on both sides of the conveying belt 13, the guide groove 111 gradually narrows along the conveying direction of the steel pipes, and finally forms a narrow groove allowing the steel pipes to pass along the length direction of the steel pipes. When the steel pipes enter the guide groove 111, the steel pipes will be adjusted to the same direction by contacting the guide plates 11 and pass through the guide groove 111 along the length direction of the steel pipes.

[0049] Further, the feeding module 1 is also provided with a first controller (not shown), in order to ensure that the steel pipes will not be stuck at the guide groove 111, it is also necessary to detect whether the steel pipes can pass through the guide groove 111, therefore, a first sensor 112 electrically connected with the first controller is arranged at the outlet position of the guide groove 111, the first sensor 112 can generate a first sensing signal when the steel pipes pass through the outlet of the guide groove 111 and send the first sensing signal to the first controller, the first controller can accept the first sensing signal to confirm that the steel pipes pass through the guide groove 111 smoothly; that is to say, when the first sensor 112 does not detect that the steel pipes pass through the outlet of the guide groove 111 smoothly, the first controller will trigger an alarm system, during which the whole pressing equipment will stop working, until the sticking problem at the guide groove 111 is solved, the whole pressing equipment will be restarted.

[0050] Further, in order to make the blocking and pushing processes be orderly, a second sensor 112 electrically connected with the first controller is arranged at the position of the baffle 141, the second sensor 112 can generate a second sensing signal when the baffle 141 blocks the steel pipes and send the second sensing signal to the first controller, the first controller can send an instruction to the feeding mechanism after receiving the second sensing signal, so that the feeding mechanism stops working to avoid that multiple steel pipes are all accumulated at the baffle 141; after the feeding mechanism stops working, the first controller can send an instruction to the pushing feeding mechanism 12 to push the steel pipes away from the feeding mechanism.

[0051] Further, in order to avoid pushing multiple steel pipes into the feeding groove 151 by the pushing feeding mechanism 12, a third sensor 152 electrically connected with the first controller is arranged in the feeding groove 151. The third sensor 152 can generate a third sensing signal when the steel pipe enters the feeding groove 151. The first controller can send an instruction to the pushing feeding mechanism 12 to stop working after receiving the third sensing signal. That is, even if the baffle 141 has a steel pipe blocked in place, the pushing feeding mechanism 12 will not push it into the feeding groove 151 before the steel pipe in the feeding groove 151 enters the next station, avoiding the feeding confusion caused by multiple steel pipes entering the feeding groove 151. When the steel pipe in the feeding groove 151 enters the next station, the third sensing signal generated by the third sensor 152 disappears. At this time, the pushing feeding mechanism 12 will push the steel pipe blocked in place at the baffle 141 into the feeding groove 151, so that the steel pipe feeding process is orderly.

[0052] As shown in Figures 5-7 The steel pipe leaving the feeding groove 151 will enter the next station, that is, the finishing module 21 at the second station. The finishing module 21 includes a first support assembly for carrying the steel pipe. The first support assembly includes two oppositely arranged first vertical plates 219c. A receiving groove 219 for placing and carrying the steel pipe is formed between the first vertical plates 219c. The length direction of the receiving groove 219 is the same as the length direction of the steel pipe in the receiving groove 219. A support rod 219a is arranged in the receiving groove 219 and passes between the two first vertical plates 219c. In order to prevent the support rod 219a from sliding left and right on the first vertical plate 219c, an L-shaped limiting block 219b is arranged above the support rod 219a. One leg of the limiting block 219b faces the end of the support rod 219a to avoid the support rod 219a from sliding left and right on the first vertical plate 219c.

[0053] Specifically, since the steel pipe may not be cut in place when cutting the press-in hole and the pass-through hole, the circular waste plate that should be separated from the steel pipe may still be in the corresponding hole position. In order to clean the waste at the corresponding hole position, a punching telescopic assembly 218 corresponding to the press-in hole of the steel pipe is horizontally connected to the first vertical plate 219c. The pass-through hole of the steel pipe is also arranged with the punching telescopic assembly 218. The punching telescopic assembly 218 is a horizontally telescopic punching cylinder. The punching telescopic assembly 218 can punch the press-in hole of the steel pipe through the horizontally telescopic rod that extends horizontally. Thus, the circular waste plate that has not been separated from the steel pipe is punched into the inner cavity of the steel pipe, facilitating the next step of cleaning by the slide rod 214. It should be noted that the diameter of the horizontally telescopic rod is greater than that of the press-in hole and the pass-through hole of the steel pipe. Therefore, when it extends, it does not enter the inner cavity of the steel pipe, but only impacts the outer wall of the steel pipe at the outer end of the press-in hole and the pass-through hole. The extended horizontally telescopic rod clamps the steel pipe, so that the steel pipe remains fixed during the next precise machining.

[0054] Further, in order to carry out the finishing, the finishing module 21 further comprises a slide rod 214 matched with the inner cavity profile of the steel pipe, the slide rod 214 is connected with a finishing driving assembly 211, the finishing driving assembly 211 is also a cylinder, the cylinder comprises a finishing telescopic rod 211a inside, the head of the finishing telescopic rod 211a is connected with a sliding block 213, the sliding block 213 is connected with the slide rod 214, so that the finishing telescopic rod 211a can drive the slide rod 214 to insert into the inner cavity of the steel pipe along the length direction of the steel pipe by driving the sliding block 213, and the waste plates falling into the inner cavity of the steel pipe can be cleaned out by the inserted slide rod 214; in addition, along the insertion direction of the slide rod 214, the outlet of the steel pipe, that is, the end of the first vertical plate 219c away from the slide rod 214 is provided with a material collecting fence 212, so that the waste materials can enter the material collecting fence 212 after being cleaned out of the steel pipe, thereby facilitating the collection and centralized treatment of the waste materials.

[0055] Further, in order to ensure that the horizontal telescopic rod of the punching telescopic assembly 218 can be aligned with the press-in hole or the through hole on the steel pipe when the horizontal telescopic rod is extended, the finishing module 21 is provided with a sliding support seat 215 supporting the slide rod 214, the sliding support seat 215 is connected with a power mechanism 216, the power mechanism 216 is a power cylinder connected with the sliding support seat 215, the power cylinder can drive the sliding support seat 215 to push against the end of the steel pipe facing the sliding support seat 215 along the length direction of the steel pipe until the press-in hole of the steel pipe is aligned with the punching telescopic assembly 218; therefore, the cooperation of the sliding support seat 215 and the power mechanism 216 can realize the accurate positioning between the press-in hole or the through hole of the steel pipe and the punching telescopic assembly 218, and avoid the phenomenon of punching position deviation; in this positioning process, the sliding support seat 215 is not only a supporting piece of the slide rod 214, but also an acting piece for sliding positioning of the steel pipe along the length of the steel pipe, and by the driving of the power mechanism 216, the sliding support seat 215 can support the slide rod 214 and act on the end of the steel pipe at the same time, so that the punching telescopic assembly 218 is aligned with the press-in hole of the steel pipe.

[0056] Further, in order to ensure the accuracy of the sliding positioning of the steel pipe, the finishing module 21 is further provided with a telescopic positioning assembly 217 on the opposite side of the sliding support seat 215, the telescopic positioning assembly 217 is a positioning cylinder horizontally connected to the first vertical plate 219c; when the press-in hole of the steel pipe is aligned with the punching telescopic assembly 218, the telescopic piston rod of the telescopic positioning assembly 217 can extend into the accommodating groove 219 to form a positioning reference and abut against the end of the steel pipe facing the telescopic positioning assembly 217; therefore, the telescopic positioning assembly 217 can block the steel pipe from continuing to slide along the length direction of the steel pipe after the press-in hole of the steel pipe is aligned with the punching telescopic assembly 218, thereby avoiding the misalignment of the press-in hole of the steel pipe and the punching telescopic assembly 218.

[0057] Further, in order to adapt to steel pipes of different length specifications, the opposite side of the telescopic positioning assembly 217 is provided with a second telescopic positioning assembly 217a connected to the corresponding first vertical plate 219c; the telescopic positioning assembly 217 and the second telescopic positioning assembly 217a are staggered along the length direction of the accommodating groove 219; when a steel pipe of another length enters the accommodating groove 219, the second telescopic positioning assembly 217a can form a corresponding positioning reference according to the corresponding length, so as to increase the versatility of the entire finishing module 21.

[0058] As shown in Figures 5-8 the steel pipe after finishing is placed into the adjusting module 22 at the third station, the adjusting module 22 includes a second support assembly for carrying the steel pipe, the second support assembly is similar in structure to the first support assembly, and the second support assembly includes two oppositely arranged second vertical plates 227, between which a second accommodating groove 228 for placing and carrying the steel pipe is formed, the length direction of the second accommodating groove 228 is the same as the length direction of the steel pipe in the second accommodating groove 228, and the second accommodating groove 228 is also provided with a support rod 219a passing between the two second vertical plates 227; in order to prevent the support rod 219a from being separated from the second vertical plate 227, an L-shaped limiting block 219b is arranged above the support rod 219a, one leg of the limiting block 219b is directed towards the end of the support rod 219a, so as to prevent the support rod 219a from sliding left and right on the second vertical plate 227.

[0059] Further, in order to adjust the hole position of the steel pipe, an adjusting mechanism is arranged above the second support assembly, the adjusting mechanism includes a driving assembly 26 and a pickup assembly 221, the driving assembly 26 is a rotary cylinder, and the pickup assembly 221 is a second jaw connected to the lower end of the rotary cylinder; the pickup assembly 221 can pick up the steel pipe from the support assembly when the press-in hole of the steel pipe does not conform to the predetermined orientation, so as to separate the steel pipe from the second support assembly; the driving assembly 26 can drive the pickup assembly 221 to overturn the steel pipe after the steel pipe is separated from the second support assembly, so as to adjust the press-in hole of the steel pipe to the predetermined orientation.

[0060] Further, in order to detect whether the hole position of the steel pipe entering the second accommodating groove 228 meets the predetermined orientation, the adjusting module 22 is further provided with a second controller (not shown) electrically connected with the driving assembly 26, a hole position detecting assembly for identifying the orientation of the press-in hole of the steel pipe, the hole position detecting assembly comprising a detecting telescopic rod corresponding to the position of the press-in hole of the steel pipe, a sensing assembly 226 electrically connected with the second controller, wherein a detecting cylinder 225 corresponding to the position of the press-in hole of the steel pipe is horizontally connected on the second vertical plate 227, and the detecting telescopic rod (not shown) is the piston rod of the detecting cylinder; the detecting telescopic rod is matched with the size of the press-in hole and can pass through the press-in hole; the detecting telescopic rod can be extended to the press-in hole for hole position detection, and different extension lengths are formed according to whether the detecting telescopic rod can pass through the press-in hole, the sensing assembly 226 can generate corresponding detection signals according to the extension length of the detecting telescopic rod, and the second controller can accept the corresponding detection signals to determine whether to control the driving assembly 26 to drive the pickup assembly 221 to adjust the hole position of the steel pipe; the hole position identifying assembly can detect whether the orientation of the press-in hole of the steel pipe is correct and send the detection result back to the second controller through the sensing assembly 226, so that the second controller processes the steel pipe with correct press-in hole orientation in the next step and adjusts the hole position of the steel pipe with incorrect press-in hole orientation; that is, if the press-in hole of the steel pipe meets the orientation, the detecting telescopic rod can be inserted into the press-in hole of the steel pipe, at this time, the extension length of the detecting telescopic rod is longer, and the second controller will not control the rotating cylinder to correct the hole position of the steel pipe; if it does not meet the predetermined orientation, the detecting telescopic rod will contact the through hole with a diameter smaller than the press-in hole, so it cannot be inserted into the inner cavity of the steel pipe, and at this time, the extension length of the detecting telescopic rod is shorter, and the second controller will control the rotating cylinder to correct the hole position of the steel pipe.

[0061] Further, in order to make the whole detection fast and efficient, the sensing assembly 226 is a common magnetic reed sensor, the cylinder body of the cylinder is provided with a clamping groove, the magnetic reed sensor is small in size, and the tubular magnetic reed sensor can be easily inserted into the clamping groove on the outer wall of the cylinder body; the main structure thereof comprises a sealed glass tube, a pair of very thin magnetic metal springs are packaged in the tube, and the two spring sheets are usually processed into contact or separation contact forms; the contact or separation between the spring sheets is determined by whether the magnetic field can affect the spring sheets; a smaller permanent magnet (not shown) is installed at the corresponding position of the detecting telescopic rod, and the permanent magnet is usually a magnetic ring sleeved on the detecting telescopic rod, which forms a magnetic field at the corresponding position of the cylinder body; when the detecting telescopic rod extends to different lengths, different magnetic fields generated by the magnetic ring will affect the magnetic reed sensor, thereby generating the required detection signal.

[0062] Specifically, the detection cylinder 225 is a magnetic induction cylinder, two magnetic spring sensors and two magnetic rings are arranged, one of the magnetic spring sensors is arranged on the outer wall of the cylinder body near the tail of the cylinder body, the other magnetic spring sensor is arranged on the outer wall of the cylinder body near the head of the cylinder body, a magnetic ring is sleeved on the tail of the detection telescopic rod, and the other magnetic ring is sleeved on the detection telescopic rod near the head of the cylinder body. When the detection telescopic rod is short, that is, the head of the detection telescopic rod does not pass through the pressing hole of the steel pipe, the magnetic ring near the tail of the detection telescopic rod is close to the magnetic spring sensor, and the magnetic ring near the head does not trigger the magnetic spring sensor of the head of the cylinder body. When the detection telescopic rod is long, the head of the detection telescopic rod passes through the pressing hole of the steel pipe, and the two magnetic rings on the detection telescopic rod trigger the two magnetic spring sensors respectively; therefore, when the two magnetic spring sensors are not triggered, the second controller judges the signal generated by the triggering as an unqualified detection signal of the hole position, so that the second controller controls the rotary cylinder to drive the second clamp jaw to turn the steel pipe by half a circle; when the two magnetic spring sensors are triggered, the second controller judges the signal generated by the triggering as a qualified detection signal of the hole position, so that the second controller does not control the rotary cylinder to drive the second clamp jaw to turn the steel pipe, so that the steel pipe with correct hole position enters the next machining process.

[0063] Further, a positioning and pushing mechanism is arranged at a position adjacent to one end of the second accommodating groove 228, the positioning and pushing mechanism comprises a pushing block 222 and a pushing cylinder 223, the piston rod of the pushing cylinder 223 is connected with the pushing block 222, and the pushing block 222 is pushed along the length direction of the steel pipe to push the steel pipe in the second accommodating groove 228, until the pressing hole of the steel pipe is aligned with the detection telescopic rod, so as to facilitate the detection telescopic rod to perform the next hole position detection.

[0064] Further, in order to finish and position the steel pipe, the second vertical plate 227 is also horizontally connected with a telescopic positioning assembly 217 which is away from the positioning and pushing mechanism along the length direction of the second accommodating groove 228, the telescopic positioning assembly 217 comprises a first positioning telescopic rod (not shown) which can horizontally extend into the second accommodating groove 228; when the steel pipe moves along the length direction under the action of the pushing block 222, until the pressing hole of the steel pipe is aligned with the detection telescopic rod of the detection cylinder, the first positioning telescopic rod can abut against the end of the steel pipe in the second accommodating groove 228 by extending into the second accommodating groove 228, so as to form a positioning reference, avoiding detection deviation caused by continuous sliding of the steel pipe.

[0065] Further, in order to push the steel pipe to the predetermined detection position in time after the steel pipe enters the second accommodating groove 228, the second vertical plate 227 is connected with an inductor 224 which is electrically connected with the second controller. The inductor 224 is usually a photoelectric switch which can generate a working signal after the steel pipe enters the second accommodating groove 228. After the second controller receives the corresponding working signal, it can control the pushing cylinder 223 to drive the pushing block 222 to push the steel pipe along the length direction of the steel pipe.

[0066] Further, in order to adapt to steel pipes with different length specifications, the opposite side of the telescopic positioning assembly 217 on the second vertical plate 227 is also provided with a second telescopic positioning assembly 217a which is connected with the corresponding first vertical plate 219c. The telescopic positioning assembly 217 and the second telescopic positioning assembly 217a are staggered along the length direction of the accommodating groove 219. When another length of steel pipe enters the accommodating groove 219, the second telescopic positioning assembly 217a can form a corresponding positioning reference according to the corresponding length, so as to increase the versatility of the whole adjusting module 21.

[0067] Further, although the adjusting module 22 has already conducted hole position correction detection, in order to ensure the hole position adjustment and detection process, a secondary adjusting module 25 which is completely same in structure with the adjusting module 22 is arranged between the third work station and the fourth work station. The steel pipe which has completed hole position adjustment on the adjusting module 22 will be moved to the secondary adjusting module 25. The secondary adjusting module 25 can form double detection with the adjusting module 22, so as to avoid that the steel pipe which is missed in detection enters the fourth work station.

[0068] As Figures 1-3As shown, the steel pipe that has completed double detection from the secondary adjustment and pressing module 3 will be transported to the pressing module 3 at the fourth station, the pressing module 3 comprises a supporting mechanism for supporting the steel pipe, and a conventional rivet press 40 is arranged above the supporting mechanism. In order to avoid the effect that the steel pipe and the supporting mechanism are temporarily "stuck" due to excessive pressing force of the rivet press 40 during pressing of the nut, the supporting mechanism is configured as a floating type. Specifically, the supporting mechanism comprises a fixed support assembly and a movable support assembly arranged side by side, the movable support assembly comprises a movable seat 33 and a power assembly 32 connected with the movable seat 33, the power assembly 32 is a driving cylinder arranged at the lower end of the movable seat 33, the driving cylinder comprises a longitudinal telescopic rod 321 that can be telescoped up and down, and the longitudinal telescopic rod 321 is locked at the lower end of the movable seat 33 through a connecting nut 35; the power assembly 32 can drive the movable seat 33 to move longitudinally after the nut is pressed into the pressing hole of the steel pipe, so as to separate the steel pipe from the supporting mechanism; the supporting mechanism has a pressing mode and a reset mode; when the workbench is in the pressing mode, the power assembly 32 can drive the movable seat 33 to move downward to form support for the steel pipe together with the fixed support assembly; when the workbench is switched to the reset mode, the power assembly 32 can drive the movable seat 33 to move upward, at this time, the floating seat 33 will generate a torque on the steel pipe at the position of the fixed support assembly, so as to separate the steel pipe from the steel pipe supporting mechanism.

[0069] Further, in order to stably support the steel pipe during pressing, the fixed support assembly comprises two fixed seats 31 arranged side by side; secondly, if one of the two pressing holes of the steel pipe has already been pressed with a nut, it is necessary to press the nut in the other pressing hole, therefore, if the movable seat 33 is only one, it is necessary to take and turn over the entire steel pipe before pressing the nut in the next pressing hole, therefore, in order to speed up the pressing efficiency, the movable seat 33 and the power assembly 32 are horizontally and symmetrically distributed on both sides of the two fixed seats 31, thereby forming double support positions on both sides of the fixed support assembly; at this time, the steel pipe on the supporting mechanism can be directly translated along the length direction of the steel pipe to the other movable seat, so that the other pressing hole is also quickly pressed with a nut.

[0070] Further, in order to prevent the steel pipe from moving forward and backward when placed on the supporting mechanism, the upper end of the fixed seat 31 and the upper end of the movable seat 33 are respectively provided with a first limiting groove 331 and a second limiting groove 391 which are downwardly recessed; in order to ensure that the process of placing the steel pipe into the first limiting groove 331 and the second limiting groove 391 is more smooth, the opening of the first limiting groove 331 and the second limiting groove 391 is respectively provided with a guide slope s formed by chamfering, and the guide slope s enables the steel pipe to enter the first limiting groove 331 and the second limiting groove 391 through collision with the guide slope s.

[0071] Further, in order to make the movable seat 33 float stably up and down, a bottom plate 38 is arranged below the movable seat 33, and front and rear symmetrical sliding columns 37 are connected to the bottom plate 38, the upper end of the sliding column 37 is fixed to the bottom end of the movable seat 33, and the lower end is in sliding connection with the bottom plate 38, the sliding column 37 can guide the direction when the movable seat 33 slides up and down, which is equivalent to the guide rail of the movable seat 33, so that the movable seat 33 slides more stably.

[0072] Further, in order to avoid the movable seat 33 from generating excessive pressure on the driving cylinder when moving downward, an elastic member 34 is arranged between the bottom plate 38 and the movable seat 33 to form an elastic support for the movable seat 33, the elastic member 34 is a compression spring sleeved on the sliding column 37, when the workbench is in the pressing mode, the power assembly 32 can drive the movable seat 33 to press the elastic member 34 downward, so that the elastic member 34 forms an elastic buffer for the movable seat 33; when the workbench is in the reset mode, the elastic member 34 can be reset upward and form an elastic auxiliary force for the upward movement of the movable seat 33 to share the elastic reset force of the driving cylinder on the movable seat 33, which achieves two purposes at once and has a delicate structure.

[0073] Further, the movable seat 33 will generate unnecessary reverse tension on the driving cylinder due to inertia when resetting upward, therefore, in order to protect the driving cylinder, a limiting column 33b is arranged above the movable seat 33; when the workbench is in the pressing mode, the limiting column 33b is separated from the movable seat 33; when the workbench is in the reset mode, the limiting column 33b abuts against the movable seat 33; thereby effectively blocking the inertia force of the movable seat 33 on the driving cylinder when resetting upward, thereby playing a role in protecting the driving cylinder.

[0074] Further, the pressing module 3 further comprises a guide assembly 36, the guide assembly 36 comprises a mounting seat 366, a semicircular model groove 365 is arranged on the upper end face of the mounting seat 366, when the bottom of the flange end b of the nut is blown open downward, the blown open part can be guided outward by the model groove 365, thereby being fixed on the outer wall of the steel pipe.

[0075] Further, in order to make the nut smoothly enter the pre-set hole of the steel pipe, the guide assembly 36 further comprises a guide column 361 which passes through the pre-set hole of the steel pipe upwardly, and the guide column 361 is elastically telescopic in the vertical direction. The guide column 361 is located between the two fixing seats 31, and the top end of the guide column 361 is provided with a hemispherical guide head 362. Specifically, the guide column 361 passes through the pre-set hole of the steel pipe upwardly from the through hole at the lower end of the steel pipe, and forms a nut accommodating area 363 with the two holes. In order to guide the nut into the accommodating area, the guide head 362 is configured as a smooth hemispherical shape, and when the nut is pressed downwardly and slightly deviated in position, the nut will first contact the guide head 362 to be guided into the accommodating area 363. In order to ensure that the lower edge of the nut will not be deformed when the nut contacts the guide head 362, a compression spring (not shown) is arranged in the mounting seat 366, the lower end of the guide column 361 abuts against the compression spring and is elastically telescopic in the vertical direction. When the nut is pressed against the guide head 362, the guide column 361 will be retracted downwardly to avoid hard contact with the lower edge of the nut, so as to ensure the guiding accuracy of the nut and avoid damage to the nut during pressing.

[0076] Further, in order to adapt to steel pipes of different thicknesses, a base 367 is arranged at the lower end of the mounting seat 363, the base 367 extends downwardly at the lower end of the mounting seat 363 to form an exposed adjusting portion 364 which is matched with the base 367 in a threaded manner. When the thickness of the steel pipe changes, the adjusting portion 364 can be adjusted in rotation under external force to adjust the height of the guide column 361 at the upper end of the mounting seat 363, so as to ensure that the guide head 362 can pass through the pressing hole of the steel pipe upwardly, thereby completing the guiding function during pressing of the nut.

[0077] Further, in order to realize the carrying of the steel pipes between the workstations, the device further comprises a first carrying assembly for carrying the processed steel pipes from the first workstation to the second workstation, and the first carrying assembly comprises a first clamping jaw 23 and a driving mechanism 24 for driving the first clamping jaw 23 to move. The driving mechanism is usually a three-axis module which can drive the components connected thereto to move freely in the horizontal and vertical directions. Therefore, the driving mechanism 24 can drive the first clamping jaw 23 to carry the steel pipes between the feeding groove 151 and the finishing module 21, so that the steel pipes in the feeding groove 151 are moved to the finishing module 21 one by one.

[0078] Further, in order to improve the carrying efficiency of the steel pipes, the first clamping jaw 23 and the adjusting mechanism are both connected to the driving mechanism 24. When the steel pipes are circulated between the workstations, the driving mechanism 24 can drive the first clamping jaw 23 to transfer the steel pipes on the first workstation to the second workstation, while driving the second clamping jaw to carry the steel pipes on the second workstation to the third workstation. The driving mechanism 24 can realize the synchronous carrying of the steel pipes on different workstations by simultaneously driving the first clamping jaw 23 and the adjusting mechanism, thereby improving the carrying efficiency of the steel pipes.

[0079] Further, in order to transport the steel pipe processed on the pre-processing module 2 to the press-fitting module 3, a conventional mechanical arm (not shown) is arranged between the third station and the fourth station, which can place the steel pipe in the first limiting groove 331 and the second limiting groove 391 of the supporting mechanism by clamping the steel pipe, and after the nut press-fitting of one set of pre-set holes of the steel pipe is completed, the mechanical arm can also push the steel pipe and make the steel pipe translate along the length direction of the steel pipe, so that another set of pre-set holes moves to the corresponding nut press-fitting position along the length direction of the steel pipe.

[0080] The above description of the present application and its embodiments is illustrative and not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it, without departing from the purpose of the present application, similar structural modes and embodiments can be designed without creativity, which should belong to the protection scope of the present application.

Claims

1. A nut press fitting apparatus characterized by, The application relates to a steel pipe processing system, which comprises the following modules: a feeding module (1) at a first station, which comprises a feeding mechanism for feeding steel pipes one by one; a pushing mechanism (12) is connected to the end of the feeding mechanism; a feeding groove (151) is arranged on the side of the pushing mechanism (12); the pushing mechanism (12) comprises a pushing driving mechanism (122) and a pushing plate (124); the pushing driving mechanism (122) is connected to the pushing plate (124) and can drive the pushing plate (124) to push the steel pipes fed to the end of the feeding mechanism one by one, so that the steel pipes enter the feeding groove (151) one by one; a finishing module (21) at a second station, which comprises a first supporting assembly for supporting the steel pipes, a slide rod (214) matched with the inner cavity profile of the steel pipe, and a finishing driving assembly (211) connected to the slide rod (214); the finishing driving assembly (211) can drive the slide rod (214) to be inserted into the inner cavity of the steel pipe along the length direction of the steel pipe; an adjusting module (22) at a third station, which comprises a second supporting assembly for supporting the steel pipes; an adjusting mechanism is arranged above the second supporting assembly; the adjusting mechanism comprises a driving assembly (26) and a picking assembly (221); the picking assembly (221) can pick the steel pipe from the supporting assembly when the press-in hole of the steel pipe does not conform to a predetermined direction, so that the steel pipe is separated from the second supporting assembly; the driving assembly (26) can drive the picking assembly (221) to overturn the steel pipe after the steel pipe is separated from the second supporting assembly, so that the press-in hole of the steel pipe is adjusted to the predetermined direction; a press-fitting module (3) at a fourth station, which comprises a supporting mechanism for supporting the steel pipe; the supporting mechanism comprises a fixed supporting assembly and a movable supporting assembly; the movable supporting assembly comprises a movable seat (33) and a power assembly (32) connected to the movable seat (33); the power assembly (32) can drive the movable seat (33) to move along the length direction after a nut is pressed into the press-in hole of the steel pipe, so that the steel pipe is separated from the supporting mechanism.

2. The nut press fitting apparatus according to claim 1, characterized by: The feeding mechanism comprises a feeding belt (13) at the upper end; a blocking mechanism (14) is arranged at the end of the feeding belt (13); the blocking mechanism (14) comprises a blocking plate (141) facing the feeding direction of the steel pipe; the blocking plate (141) is arranged to form a blocking gap with the feeding belt (13) at the lower end.

3. A nut press fitting apparatus according to claim 2, characterized in that: The upper end of the blocking plate (141) is connected to a blocking cylinder (142); the blocking cylinder (142) can control the longitudinal movement of the blocking plate (141) by longitudinal extension and retraction, so as to change the width of the blocking gap.

4. The nut press fitting apparatus according to claim 1, characterized by: The first supporting assembly comprises two first vertical plates (219c) arranged oppositely; the first vertical plates (219c) form a containing groove (219) for placing and supporting the steel pipe; the length direction of the containing groove (219) is the same as the length direction of the steel pipe in the containing groove (219).

5. A nut press fitting apparatus according to claim 4, characterized in that: The first vertical plate (219c) is further horizontally connected to a punching telescopic assembly (218) corresponding to the press-in hole position of the steel pipe; the punching telescopic assembly (218) can punch the press-in hole of the steel pipe by horizontal extension.

6. The nut press-fitting device according to claim 5, characterized in that: The finishing module (21) further comprises a sliding support base (215) supporting the sliding rod (214), and the sliding support base (215) is connected with a power mechanism (216), which can drive the sliding support base (215) to push against the end of the steel pipe towards the sliding support base (215) along the length direction of the steel pipe until the press-in hole of the steel pipe is aligned with the punching telescopic assembly (218).

7. A nut press fitting apparatus according to claim 6, characterized in that: The finishing module (21) further comprises a telescopic positioning assembly (217) on the opposite side of the sliding support base (215), which is horizontally connected to the first vertical plate (219c); when the press-in hole of the steel pipe is aligned with the punching telescopic assembly (218), the telescopic positioning assembly (217) can extend into the accommodating groove (219) and abut against the end of the steel pipe towards the telescopic positioning assembly (217).

8. The nut press fitting apparatus according to claim 1, characterized by: The driving assembly (26) is a rotary cylinder, and the pickup assembly (221) is a second clamping jaw connected to the lower end of the rotary cylinder.

9. A nut press fitting apparatus according to claim 8, characterized in that: The first conveying assembly is further arranged to convey the finished steel pipe from the first station to the second station, and the first conveying assembly comprises the first clamping jaw (23) and a driving mechanism (24) driving the first clamping jaw (23) to move.

10. The nut press fitting apparatus according to claim 9, characterized by: The first clamping jaw (23) and the adjusting mechanism are both connected to the driving mechanism (24); the driving mechanism (24) can drive the first clamping jaw (23) to transfer the steel pipe on the first station to the second station, while driving the second clamping jaw to convey the steel pipe on the second station to the third station.

11. The nut press fitting apparatus according to claim 1, characterized by: Between the third station and the fourth station, a second adjusting module (25) is further arranged, which has the same structure as the adjusting module (22).

12. The nut press fitting apparatus according to claim 1, characterized by: The adjusting module (22) further comprises a controller electrically connected to the driving assembly (26), and a hole position detection assembly for identifying the direction of the press-in hole of the steel pipe, which comprises a detection telescopic rod corresponding to the position of the press-in hole of the steel pipe, and a sensing assembly (226) electrically connected to the controller; the detection telescopic rod is matched with the size of the press-in hole and can pass through the press-in hole; the detection telescopic rod can be extended to the press-in hole for hole position detection, and different extension lengths can be formed according to whether the detection telescopic rod can pass through the press-in hole; the sensing assembly (226) can generate corresponding detection signals according to the extension length of the detection telescopic rod, and the controller can judge whether to control the driving assembly (26) to drive the pickup assembly (221) to adjust the hole position of the steel pipe after receiving the corresponding detection signals.

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