Full-automatic plastic nut equipment and full-automatic plastic nut system

Abstract

The utility model provides a kind of full-automatic equipment of beating plastic nut and full-automatic beating plastic nut system, full-automatic equipment of beating plastic nut includes: tightening piece and stop piece, stop piece has the stationary state of fixed position relative to tightening head and the pushing state of relative motion relative to the extension direction of the inner cavity of tightening head along tightening head;Wherein, tightening piece is reciprocatingly movably arranged along the extension direction of the pipe to be assembled, to move to feeding state or reset state;When tightening piece is in feeding state, stop piece is in stationary state, tightening piece moves towards the direction close to the pipe to be assembled and is rotatably arranged around the axis of the nut to be assembled;When tightening piece is in reset state, stop piece is in pushing state, tightening piece moves towards the direction away from the pipe to be assembled, so that stop piece pushes the nut to be assembled remaining in the inner cavity of tightening head, the utility model solves the problem of lower assembly efficiency of copper nut and plastic nut in prior art.

Description

Technical Field

[0001] This utility model relates to the field of automated assembly equipment technology, and more specifically, to a fully automatic plastic nut-making equipment and a fully automatic plastic nut-making system. Background Technology

[0002] With the rapid development of the air conditioning manufacturing industry towards intelligence and efficiency, the production processes of core air conditioning components (such as liquid inlet pipes) have placed higher demands on precision, efficiency, and consistency. As a key component of the refrigerant circulation system, the sealing performance, structural strength, and durability of the liquid inlet pipe directly determine the performance and reliability of the air conditioning system. In traditional liquid inlet pipe assembly processes, the fixing of the copper and plastic nuts on the liquid inlet pipes mostly relies on manual operation or semi-automated equipment.

[0003] However, if the previous plastic nut is not properly fitted onto the copper nut, the plastic nut will remain inside the tightening head. This requires stopping the machine to remove the failed or residual plastic nut, which takes ≥2 minutes per process. This affects the continuity of the production line, increases the assembly time of the plastic nut, and results in low assembly efficiency of the plastic nut. Utility Model Content

[0004] The main objective of this invention is to provide a fully automatic plastic nut assembly device and system to solve the problem of low assembly efficiency of copper nuts and plastic nuts in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a fully automatic plastic nut tightening device is provided, comprising: a tightening member, wherein a nut to be assembled is disposed within a tightening head of the tightening member; a stop member, disposed at the end of the inner cavity of the tightening head, the stop member being used to contact the end of the nut to be assembled; the stop member having a stationary state fixed relative to the position of the tightening head and a pushing state relative to the tightening head along the extending direction of the inner cavity of the tightening head; wherein the tightening member is reciprocally movable along the extending direction of the tube to be assembled, to move to a feeding state or a reset state; when the tightening member is in the feeding state, the stop member is in the stationary state, the tightening member moves toward the direction close to the tube to be assembled and is rotatably disposed around the axis of the nut to be assembled, for thread tightening operation; when the tightening member is in the reset state, the stop member is in the pushing state, the tightening member moves toward the direction away from the tube to be assembled, so that the stop member pushes out the nut to be assembled remaining in the inner cavity of the tightening head.

[0006] Furthermore, the tightening component includes a tightening head and a connecting support rod that are connected to each other. The connecting support rod is movably arranged along the extension direction of the tube to be assembled. The tightening head is sleeved on the connecting support rod and has at least two degrees of freedom in different directions relative to the connecting support rod.

[0007] Furthermore, the housing of the tightening head is provided with a through groove, which extends along the extension direction of the inner cavity of the tightening head and is connected to the inner cavity of the tightening head. A limiting ring is fitted on the tightening head, and the limiting ring and the tightening head are movably arranged relative to each other along the extension direction of the tube to be assembled. A stop is provided inside the limiting ring, and the stop passes through the through groove and enters the inner cavity of the tightening head to contact the axial end of the nut to be assembled.

[0008] Furthermore, the fully automatic plastic nut making equipment also includes: a material ejection clamping component, which includes two material ejection jaws arranged opposite each other along a first preset direction. The two material ejection jaws are movably arranged facing each other or away from each other to clamp or release the limiting ring, so that the stop component switches between a stationary state and a pushing state.

[0009] Furthermore, the fully automatic plastic nut fastening equipment also includes a positioning mechanism, which includes a first clamping member and a second clamping member spaced apart along the extension direction of the tube to be assembled. The first clamping member and the second clamping member are respectively used to clamp the two ends of the tube to be assembled along the axial direction. The first clamping member and the second clamping member are both movably arranged along a second preset direction to move the tube to be assembled from the feeding station to the tightening station.

[0010] Furthermore, the positioning mechanism also includes a third clamping member, which includes two positioning jaws arranged opposite each other along a first preset direction. The two positioning jaws are movably arranged facing each other or away from each other to clamp or loosen the copper nut of the tube to be assembled.

[0011] Furthermore, the fully automatic plastic nut tightening equipment also includes a first moving part, a second moving part, and a third moving part. The third moving part is mounted on the second moving part, and the second moving part is mounted on the first moving part. The third moving part is used to clamp the nut to be assembled. The first moving part is movably mounted along a second preset direction, and the second moving part is movably mounted along the extension direction of the tube to be assembled, so that the third moving part can drive the nut to be assembled from the waiting position to the tightening head.

[0012] Furthermore, the fully automatic plastic nut fastening equipment also includes a first driving component and a second driving component. The first driving component is driven to connect with the connecting support rod to drive the tightening component to rotate. The second driving component is driven to connect with the first driving component to drive the first driving component and the tightening component to move along the extension direction of the tube to be assembled. The torque of the first driving component is adjustable.

[0013] Furthermore, the fully automatic plastic nut making equipment also includes a frame and a tightening mechanism. The tightening mechanism includes a tightening component. The frame is equipped with a vibrating feeding mechanism, a positioning mechanism, and a tightening mechanism. The vibrating feeding mechanism includes a vibrating plate and a vibrating conveyor. The vibrating plate stores nuts to be assembled, and the vibrating conveyor has a conveying channel. The shape of the conveying channel is adapted to the nuts to be assembled. The vibrating conveyor is set to vibrate at a preset frequency so that the nuts to be assembled in the vibrating plate can be moved to the waiting station via the conveying channel.

[0014] According to another aspect of the present invention, a fully automatic plastic nut-making system is provided, including the aforementioned fully automatic plastic nut-making equipment and a robot, the robot being used to move the tube to be assembled to the loading station.

[0015] The fully automatic plastic nut fastening device, utilizing the technical solution of this utility model, includes a tightening component and a stop component. The tightening head of the tightening component contains the nut to be assembled. When the tightening component is in the feeding state, the stop component is stationary. The stop component moves synchronously with the tightening head, moving towards the tube to be assembled and rotatably positioned around the axis of the nut to be assembled, to perform thread tightening, thus assembling the nut to be assembled onto the copper nut on the tube. Then, the stop component switches to a pushing state, and the tightening component moves away from the tube to switch to a reset state. At this time, the relative position of the stop component and the tube to be assembled remains unchanged, while the stop component moves relative to the tightening head along the extension direction of the tightening head's inner cavity, pushing out any remaining nuts to be assembled within the tightening head's inner cavity. This prevents failed assembly nuts from remaining in the tightening head's inner cavity, avoids stopping the machine to remove residual nuts, reduces the assembly time of the plastic nuts, improves the assembly efficiency of the plastic nuts, and solves the problem of low assembly efficiency of copper nuts and plastic nuts in the prior art. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of an embodiment of the fully automatic plastic nut fastening system according to the present invention is shown;

[0018] Figure 2 A top view of an embodiment of the fully automatic plastic nut-making device according to the present invention is shown.

[0019] Figure 3 A side view of an embodiment of the fully automatic plastic nut-making device according to the present invention is shown.

[0020] Figure 4 It shows Figure 3 Schematic diagram of the cross-sectional structure at point BB;

[0021] Figure 5 A schematic diagram of the first moving part, second moving part, third moving part, tightening part, nut to be assembled, and second driving part of the fully automatic plastic nut tightening device according to the present invention is shown at the first angle.

[0022] Figure 6 A schematic diagram of the structure of the first moving part, the second moving part, the third moving part, the tightening part, the nut to be assembled, and the second driving part of the fully automatic plastic nut tightening device according to the present invention is shown at a second angle.

[0023] Figure 7 A schematic diagram of the structure of the first clamping member, the second clamping member, the third clamping member, the connecting frame, and the third driving member of the fully automatic plastic nut-making device according to the present invention is shown.

[0024] Figure 8 A structural schematic diagram of the first moving part, second moving part, third moving part, tightening part, nut to be assembled, and second driving part of the fully automatic plastic nut fastening device according to the present invention is shown at a third angle.

[0025] Figure 9 A schematic diagram of the vibratory feeding mechanism of the fully automatic plastic nut making equipment according to the present invention is shown.

[0026] Figure 10 A schematic diagram of the structure of a robot for a fully automatic plastic nut fastening system according to the present invention is shown.

[0027] The above figures include the following reference numerals:

[0028] 10. Tightening component; 1. Nut to be assembled; 20. First clamping component; 21. Second clamping component; 2. Tube to be assembled; 30. Third clamping component; 31. Positioning gripper; 11. Second driving component; 12. First driving component; 13. Tightening head; 14. Connecting support rod; 15. Through groove; 16. Limiting ring; 161. Stop component; 40. Unloading clamping component; 50. First moving component; 51. Second moving component; 52. Third moving component; 521. Moving connecting shaft; 522. Moving gripper; 60. Third driving component; 61. Connecting frame; 3. Frame; 301. Vibratory plate; 302. Vibrating conveyor component; 4. Robot; 70. First cylinder; 71. Second cylinder; 72. Third cylinder. Detailed Implementation

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, 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.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0031] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0032] Please refer to Figures 1 to 10This utility model provides a fully automatic plastic nut fastening device, comprising: a tightening member 10, wherein a nut 1 to be assembled is disposed within a tightening head 13 of the tightening member 10; a stop member 161, disposed at the end of the inner cavity of the tightening head 13, the stop member 161 being used to contact the end of the nut 1 to be assembled; the stop member 161 has a stationary state fixed relative to the tightening head 13 and a pushing state that moves relative to the tightening head 13 along the extending direction of the inner cavity of the tightening head 13; wherein the tightening member 10 extends along the extending direction of the tube 2 to be assembled. The device is reciprocally movable to move to either a loading state or a reset state. When the tightening member 10 is in the loading state, the stop member 161 is stationary. The tightening member 10 moves toward the direction of the tube to be assembled 2 and is rotatably set around the axis of the nut to be assembled 1 to perform a thread tightening operation. When the tightening member 10 is in the reset state, the stop member 161 is in the pushing state. The tightening member 10 moves toward the direction of the tube to be assembled 2 so that the stop member 161 pushes out the nut to be assembled 1 remaining in the inner cavity of the tightening head 13.

[0033] This utility model discloses a fully automatic plastic nut tightening device, comprising a tightening component 10 and a stop component 161. The tightening head 13 of the tightening component 10 contains the nut 1 to be assembled. When the tightening component 10 is in the feeding state, the stop component 161 is stationary. The stop component 161 moves synchronously with the tightening head 13. The tightening component 10 moves towards the direction of the tube 2 to be assembled and is rotatably positioned around the axis of the nut 1 to be assembled, for thread tightening operation, so that the nut 1 to be assembled is fitted onto the copper nut of the tube 2 to be assembled. Then, the stop component 161 switches to the pushing state, and the tightening component 10 moves towards... The stop 161 moves away from the tube 2 to be assembled to switch to the reset state. At this time, the relative position of the stop 161 and the tube 2 to be assembled remains unchanged. It moves relative to the tightening head 13 along the extension direction of the inner cavity of the tightening head 13, pushing out the nut 1 to be assembled that is still inside the inner cavity of the tightening head 13. This avoids the nut to be assembled that failed to be assembled remaining in the inner cavity of the tightening head 13, avoids stopping the machine to remove the nut to be assembled, reduces the assembly time of the plastic nut, improves the assembly efficiency of the plastic nut, and solves the problem of low assembly efficiency of copper nuts and plastic nuts in the prior art.

[0034] Specifically, a connecting port is provided on the axial end of the tightening head 13, which is connected to the inner cavity of the tightening head 13. The stop member 161 pushes out the nut 1 to be assembled that is still inside the inner cavity of the tightening head 13 from the connecting port.

[0035] Specifically, the nut to be assembled 1 is a plastic nut, and the tube to be assembled 2 is a copper inlet tube.

[0036] In this embodiment, the tightening member 10 includes a tightening head 13 and a connecting support rod 14 connected to each other. The connecting support rod 14 is movably arranged along the extension direction of the tube 2 to be assembled. The tightening head 13 is sleeved on the connecting support rod 14 and has at least two degrees of freedom in different directions relative to the connecting support rod 14.

[0037] Specifically, the connecting support rod 14 is configured to move along the extension direction of the tube 2 to be assembled, providing stable support and guidance for the tightening head 13, ensuring that the tightening head 13 moves close to the copper nut of the tube 2 to be assembled; the tightening head 13 has at least two degrees of freedom in different directions relative to the connecting support rod 14, allowing the tightening head 13 to swing slightly in two different directions perpendicular to the axis of the tube 2 to be assembled, with the connection point between the tightening head 13 and the connecting support rod 14 as the hinge point, allowing the tightening head 13 to automatically adjust its angle and position in the event of a slight misalignment between the nut 1 to be assembled and the tube 2 to be assembled, ensuring that the nut 1 to be assembled can be aligned with the tube 2 to be assembled, and ensuring that the axis of the nut 1 to be assembled coincides with the axis of the tube 2 to be assembled.

[0038] Specifically, the tightening component 10 allows for automatic correction of a ±15° deflection angle to address minor misalignments between the copper pipe and the nut, achieving a tightening success rate of >99.9%.

[0039] In this embodiment, a through groove 15 is provided on the housing of the tightening head 13. The through groove 15 extends along the extension direction of the inner cavity of the tightening head 13 and is connected to the inner cavity of the tightening head 13. A limiting ring 16 is sleeved on the tightening head 13. The limiting ring 16 and the tightening head 13 are movably arranged relative to each other along the extension direction of the tube 2 to be assembled. A stop member 161 is provided in the limiting ring 16. The stop member 161 passes through the through groove 15 and enters the inner cavity of the tightening head 13 to contact the axial end of the nut 1 to be assembled.

[0040] Specifically, by fitting a limiting ring 16 onto the tightening head 13, the stop 161 is connected to the tightening head 13, allowing the stop 161 to move synchronously with the tightening head 13 when it is stationary. The through groove 15 provides a channel for the stop 161 on the limiting ring 16 to enter and exit the inner cavity of the tightening head 13, ensuring that the stop 161 can contact the axial end of the nut 1 to be assembled. The dimensions (width and depth) of the through groove 15 need to be precisely designed to ensure that the stop 161 can pass through smoothly without obstruction, and to ensure that the nut 1 to be assembled will not come out of the through groove 15 or shift laterally during the tightening process.

[0041] In this embodiment, the fully automatic plastic nut making equipment further includes: a material ejection clamp 40, which includes two material ejection claws arranged opposite each other along a first preset direction. The two material ejection claws are movably arranged facing each other or away from each other to clamp or release the limiting ring 16, so that the stop member 161 switches between a stationary state and a pushing state.

[0042] Specifically, by clamping the limiting ring 16 with the ejector clamp 40, it can be ensured that the limiting ring 16 and the stop 161 will not move away from the tube 2 to be assembled as the tightening member 10 moves away from it. When the tightening member 10 is in the loading state, the two ejector jaws move in opposite directions to release the limiting ring 16, so that the limiting ring 16 is fixed relative to the tightening head 13, and the stop 161 is in a stationary state. When the assembly is completed, the two ejector jaws move towards each other to clamp the limiting ring 16. When the tightening member 10 moves away from the tube 2 to switch to the reset state, since the limiting ring 16 is clamped by the ejector clamp 40 and cannot move with the tightening member 10, the stop 161 moves relative to the tightening head 13 along the extension direction of the inner cavity of the tightening head 13, so as to ensure that the stop 161 can push out the nut 1 to be assembled remaining in the inner cavity of the tightening head 13.

[0043] Specifically, the fully automatic plastic nut making equipment also includes a material return detection component. When the material return detection component detects a residual nut to be assembled 1, the material return clamping component 40 is activated within 0.3 seconds to clamp the limit ring 16, without the need for manual intervention (the downtime is reduced from 2 minutes to 0).

[0044] Specifically, the positioning mechanism also includes an ejector clamping cylinder, which is driven to be connected to the ejector clamping component 40 to drive the ejector jaws to move towards or away from each other.

[0045] In this embodiment, the fully automatic plastic nut fastening equipment also includes a positioning mechanism. The positioning mechanism includes a first clamping member 20 and a second clamping member 21 that are spaced apart along the extension direction of the tube 2 to be assembled. The first clamping member 20 and the second clamping member 21 are respectively used to clamp the two ends of the tube 2 to be assembled. The first clamping member 20 and the second clamping member 21 are both movably arranged along a second preset direction to move the tube 2 to be assembled from the feeding station to the tightening station.

[0046] Specifically, the first clamping member 20 and the second clamping member 21 clamp the two ends of the tube 2 to be assembled, and drive the tube 2 to be assembled to move along the second preset direction to the tightening position; the first clamping member 20 clamps the copper tube of the tube 2 to be assembled, and the second clamping member 21 clamps the copper nut on the tube 2 to be assembled, so as to avoid the tube 2 to be assembled being clamped by a single clamping member, which would cause uneven force on the tube 2 to be assembled and tilting, and ensure that the tube 2 to be assembled and the nut 1 to be assembled can be aligned with each other, and ensure the assembly accuracy of the nut 1 to be assembled.

[0047] Specifically, the positioning mechanism also includes a first clamping cylinder and a second clamping cylinder. The first clamping cylinder is driven to the first clamping member 20, and the second clamping cylinder is driven to the second clamping member 21, so as to drive the first clamping member 20 and the second clamping member 21 to clamp or release the tube 2 to be assembled.

[0048] Specifically, the fully automatic plastic nut fastening equipment also includes a third driving component 60, and the positioning mechanism includes a connecting frame 61. The first clamping cylinder and the second clamping cylinder are both mounted on the connecting frame 61. The third driving component 60 is drivenly connected to the connecting frame 61 to drive the connecting frame 61 to move along a second preset direction. The third driving component 60 is a cylinder.

[0049] In practice, uneven force during manual or mechanical gripping can easily cause the copper nut of the tube to be assembled 2 to tilt and the threads to be damaged, resulting in a positioning deviation of >±0.3mm, leading to a subsequent tightening failure rate of up to 8%. The first clamping member 20 and the second clamping member 21 simultaneously grip the tube to be assembled 2, which can ensure that the tube to be assembled 2 and the nut to be assembled 1 can be aligned with each other, and the positioning deviation is optimized from ±0.3mm to ±0.02mm.

[0050] In this embodiment, the positioning mechanism further includes a third clamping member 30, which includes two positioning claws 31 arranged opposite each other along a first preset direction. The two positioning claws 31 are movably arranged facing each other or away from each other to clamp or loosen the copper nut of the tube 2 to be assembled.

[0051] Specifically, the third clamping member 30 mainly consists of two positioning jaws 31. The positioning jaws 31 can move in opposite directions or in opposite directions to clamp and loosen the copper nut on the tube 2 to be assembled. By clamping the copper nut on the tube 2 to be assembled through the positioning jaws 31 of the third clamping member 30, it can provide support and clamping for the tube 2 to be assembled during the tightening process, preventing the copper nut from shifting or tilting due to vibration or tightening force, thus improving the stability of the assembly.

[0052] In practice, when the tube 2 to be assembled moves from the loading station to the tightening station, the third clamping member 30 clamps the tube 2 to be assembled, and the first clamping member 20 and the second clamping member 21 release the tube 2 to be assembled.

[0053] Specifically, the positioning mechanism also includes a third clamping cylinder, which is driven to the third clamping member 30 to clamp or release the tube 2 to be assembled.

[0054] In this embodiment, the fully automatic plastic nut clamping device further includes a first moving part 50, a second moving part 51, and a third moving part 52. The third moving part 52 is disposed on the second moving part 51, and the second moving part 51 is disposed on the first moving part 50. The third moving part 52 is used to clamp the nut 1 to be assembled. The first moving part 50 is movably disposed along a second preset direction, and the second moving part 51 is movably disposed along the extension direction of the tube 2 to be assembled, so that the third moving part 52 drives the nut 1 to be assembled from the waiting position to the tightening head 13.

[0055] Specifically, through the combined movement of the first moving part 50 and the second moving part 51, and the vertical precision adjustment of the third moving part 52, the three-dimensional high-precision positioning of the nut 1 to be assembled can be achieved, ensuring that the nut can be accurately placed into the tightening head 13, thereby improving assembly accuracy and success rate. At the same time, the automatic control of multiple moving parts replaces the traditional manual operation or semi-automatic mechanical gripper, greatly improving the automation level of the assembly process and reducing errors and inefficiencies caused by manual operation.

[0056] Specifically, the fully automatic plastic nut making equipment also includes a first cylinder 70, a second cylinder 71 and a third cylinder 72. The first cylinder 70 is driven to the first moving part 50, the second cylinder 71 is driven to the second moving part 51, and the third cylinder 72 is driven to the third moving part 52.

[0057] In this embodiment, the fully automatic plastic nut fastening device further includes a first drive member 12 and a second drive member 11. The first drive member 12 is driven to connect to the connecting support rod 14 to drive the tightening member 10 to rotate. The second drive member 11 is driven to connect to the first drive member 12 to drive the first drive member 12 and the tightening member 10 to move along the extension direction of the tube 2 to be assembled. The torque of the first drive member 12 is adjustable.

[0058] Specifically, the first driving component 12 serves as the direct drive source for the tightening component 10. The first driving component 12 (typically a servo motor) is driven to connect to the supporting rod 14, and its output torque drives the tightening head 13 to rotate, thereby achieving the tightening assembly of the plastic nut and the copper nut. The torque of the first driving component 12 is adjustable, ensuring that it can adjust the applied torque in real time according to the contact condition between the plastic nut and the copper nut during the tightening process. This avoids damage to the plastic component due to excessive torque or a loose connection due to insufficient torque, thus significantly improving assembly accuracy and the reliability of the threaded connection.

[0059] Specifically, the second drive component 11 (such as a linear guide and a linear drive assembly) is driven to connect with the first drive component 12 and is responsible for driving the first drive component 12 and its connected tightening component 10 to move along the extension direction of the tube 2 to be assembled, ensuring that the tightening head 13 can be accurately aligned with the copper nut, providing stable support for the tightening process, and being able to smoothly move the tightening component 10 back to the starting position after tightening, in preparation for the next tightening operation.

[0060] In practice, manual tightening relies on worker experience, and torque control fluctuates greatly (±15%), which can easily cause plastic parts to crack or threads to strip, resulting in an airtightness failure rate of about 5%. By using a first drive component 12 with torque feedback and real-time monitoring to tighten the nut 1 to be assembled, the torque is kept stable (the airtightness failure rate is reduced from 5% to 0.1%).

[0061] In this embodiment, the fully automatic plastic nut making equipment also includes a frame 3 and a tightening mechanism. The tightening mechanism includes a tightening component 10. The frame 3 is provided with a vibratory feeding mechanism, a positioning mechanism and a tightening mechanism. The vibratory feeding mechanism includes a vibratory plate 301 and a vibratory conveyor 302. The vibratory plate 301 stores nuts 1 to be assembled. The vibratory conveyor 302 is provided with a conveying channel. The shape of the conveying channel is adapted to the nuts 1 to be assembled. The vibratory conveyor 302 is set to vibrate at a preset frequency so that the nuts 1 to be assembled in the vibratory plate 301 can be moved to the waiting station via the conveying channel.

[0062] Specifically, the vibratory feeder 301 is responsible for storing a large number of nuts 1 to be assembled, and feeding the nuts 1 to be assembled one by one into the vibratory conveyor 302 through the built-in vibration mechanism. The vibratory feeder 301 is equipped with a spiral track inside, which can guide the nuts to move from the center of the vibratory feeder 301 to the outside. At the same time, the vibration realizes the separation and orientation of the nuts 1 to be assembled one by one. For asymmetrical thread or hexagonal plastic nuts, the vibratory feeder 301 is specially equipped with limit posts and stepped tracks to ensure that the nuts 1 to be assembled can enter the vibratory conveyor 302 in the correct direction and posture.

[0063] Specifically, the vibrating conveyor 302 is equipped with a conveying channel adapted to the shape of the plastic nuts. This conveying channel can transport the nuts fed from the vibrating plate 301 to the waiting station according to a preset path, awaiting further gripping and positioning. The vibrating conveyor 302 directionally sorts hexagonal plastic nuts. In order to improve conveying efficiency and reduce jamming, and to ensure continuous and stable feeding, the track width and step height are customized according to the shape characteristics of the plastic nuts, matching the size of the plastic nuts, to prevent the plastic nuts from tilting or reversing during the conveying process. The jamming rate of plastic nuts is reduced from 15% to 0.5%.

[0064] Specifically, the fully automatic plastic nut machine also includes a photoelectric sensor to detect whether the plastic nut has reached the waiting station. When the detection is complete, the first cylinder 70, the second cylinder 71 and the third cylinder 72 are activated. The first moving part 50 and the second moving part 51 move together, and the third moving part 52 drives the nut 1 to be assembled from the waiting station to the tightening head 13.

[0065] Specifically, traditional equipment frames use a separate structure, which causes vibration-induced frame displacement during multi-mechanism collaborative operation, affecting assembly accuracy and causing material jamming during feeding (positioning error > ±0.5mm). This utility model adopts an integrated frame, with the vibration feeding mechanism, positioning mechanism, and tightening mechanism all integrated on the frame 3, ensuring high feeding progress (positioning error < ±0.5mm), eliminating the displacement caused by vibration in separate frames (vibration displacement reduced by 90%), improving assembly positioning accuracy, and ensuring the stability of multi-mechanism collaboration.

[0066] This utility model also provides a fully automatic plastic nut making system, including the above-mentioned fully automatic plastic nut making equipment and robot 4, which is used to move the tube 2 to be assembled to the loading station.

[0067] The fully automatic plastic nut fastening system of this utility model includes the aforementioned fully automatic plastic nut fastening equipment and a robot 4. The robot 4 is used to move the tube 2 to be assembled to the loading station. The fully automatic plastic nut fastening equipment includes a tightening component 10 and a stop component 161. The tightening head 13 of the tightening component 10 is provided with the nut 1 to be assembled. When the tightening component 10 is in the loading state, the stop component 161 is in a stationary state. The stop component 161 moves synchronously with the tightening head 13. The tightening component 10 moves towards the tube 2 to be assembled and is rotatably set around the axis of the nut 1 to be assembled to perform a thread tightening operation, so that the nut 1 to be assembled is assembled onto the copper nut of the tube 2 to be assembled. Then the stop component 161 switches to the pushing state, and the tightening component 10 moves away from the nut 2. The assembly tube 2 moves in a direction to switch to the reset state. At this time, the relative position of the stop 161 and the tube 2 to be assembled remains unchanged. It moves relative to the tightening head 13 along the extension direction of the inner cavity of the tightening head 13, pushing out the nut 1 to be assembled that is still inside the inner cavity of the tightening head 13. This avoids the nut to be assembled that failed to be assembled remaining in the inner cavity of the tightening head 13, avoids stopping the machine to remove the nut to be assembled, reduces the assembly time of the plastic nut, improves the assembly efficiency of the plastic nut, and solves the problem of low assembly efficiency of copper nuts and plastic nuts in the prior art.

[0068] In existing technologies, manual assembly is inefficient (typically 10-15 pieces / minute) and prone to errors in positioning accuracy of plastic nuts due to operator fatigue, resulting in problems such as thread misalignment and uneven heat melting of plastic parts, affecting the pass rate of airtightness tests. Furthermore, traditional processes rely on manual visual inspection or sampling, making it difficult to achieve closed-loop quality control throughout the entire process, leading to defective products flowing into subsequent processes and increasing rework costs. Therefore, this utility model's fully automatic plastic nut-installing system is specifically designed for the automated insertion of copper nuts into air conditioning liquid inlet pipes. This system utilizes servo motor precision motion control, real-time torque monitoring and feedback, nut placement detection, and simultaneous clamping of the pipe 2 by the first clamping member 20 and the second clamping member 21, achieving precise positioning, efficient assembly, and zero-defect output of the plastic nuts, meeting the needs of on-site production.

[0069] In practice, the assembly process of the fully automatic plastic nut fastening system of this utility model is as follows:

[0070] 1. The vibratory plate 301 vibrates, causing the nut 1 to be assembled to enter the vibratory conveyor 302. When the nut 1 reaches the front end (waiting station) of the conveying channel of the vibratory conveyor 302, the photoelectric sensor detects the presence of a plastic nut. The second cylinder 71 and the third cylinder 72 are activated. The second moving part 51 moves downward along the extension direction of the tube 2 to be assembled, and the third moving part 52 clamps the nut 1 to be assembled. Then, the second moving part 51 drives the third moving part 52 to move upward along the extension direction of the tube 2 to be assembled and return to the initial position. Then, the first cylinder 70 is activated, and the first moving part 50 drives the second moving part 51 and the third moving part 52 to move forward along the second preset direction, so that the plastic nut moves above the tightening head 13. Then, the second moving part 51 moves downward along the extension direction of the tube 2 to be assembled, and the third moving part 52 releases the nut 1 to be assembled, allowing the nut 1 to enter the inner cavity of the tightening head 13 through the connecting port.

[0071] 2. As the plastic nut is successfully placed into the tightening head 13, the robot 4 moves the tube 2 to be assembled to the loading station. At this time, the first clamping member 20 and the second clamping member 21 clamp the two ends of the tube 2 to be assembled, thereby positioning the tube 2. The third driving member 60 drives the first clamping member 20 and the second clamping member 21 to move the tube 2 to the tightening station. The third clamping member 30 clamps the tube 2, and the first clamping member 20 and the second clamping member 21 release the tube 2, thereby locking the tube 2 to be assembled and loading it to the tightening station.

[0072] 3. After the plastic nut and the tube 2 to be assembled are in place, the second driving component 11 drives the first driving component 12 and the tightening component 10 to move along the extension direction of the tube 2 to be assembled, so that the plastic nut is close to the copper nut below the tube 2 to be assembled, and the first driving component 12 drives the tightening component 10 to rotate, so that the nut 1 to be assembled is assembled onto the copper nut of the tube 2 to be assembled.

[0073] 4. After the plastic nut is installed, the second drive component 11 drives the first drive component 12 and the tightening component 10 to move along the extension direction of the tube 2 to be assembled, so that the tightening component 10 moves to the position of removing the plastic nut. The ejection clamping cylinder is activated, and the two ejection jaws move towards each other to clamp the limiting ring 16. When the tightening component 10 moves away from the tube 2 to switch to the reset state, since the limiting ring 16 is clamped by the ejection clamping component 40 and cannot move with the tightening component 10, the stop component 161 moves relative to the tightening head 13 along the extension direction of the inner cavity of the tightening head 13, so as to ensure that the stop component 161 can push out the remaining nut 1 to be assembled in the inner cavity of the tightening head 13. At the same time, the ejection clamping cylinder retracts to end the ejection action. Then the second drive component 11 drives the first drive component 12 and the tightening component 10 to move along the extension direction of the tube 2 to be assembled, so that the tightening component 10 returns to the initial position.

[0074] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0075] This utility model discloses a fully automatic plastic nut tightening device, comprising a tightening component 10 and a stop component 161. The tightening head 13 of the tightening component 10 contains the nut 1 to be assembled. When the tightening component 10 is in the feeding state, the stop component 161 is stationary. The stop component 161 moves synchronously with the tightening head 13. The tightening component 10 moves towards the direction of the tube 2 to be assembled and is rotatably positioned around the axis of the nut 1 to be assembled, for thread tightening operation, so that the nut 1 to be assembled is fitted onto the copper nut of the tube 2 to be assembled. Then, the stop component 161 switches to the pushing state, and the tightening component 10 moves towards... The stop 161 moves away from the tube 2 to be assembled to switch to the reset state. At this time, the relative position of the stop 161 and the tube 2 to be assembled remains unchanged. It moves relative to the tightening head 13 along the extension direction of the inner cavity of the tightening head 13, pushing out the nut 1 to be assembled that is still inside the inner cavity of the tightening head 13. This avoids the nut to be assembled that failed to be assembled remaining in the inner cavity of the tightening head 13, avoids stopping the machine to remove the nut to be assembled, reduces the assembly time of the plastic nut, improves the assembly efficiency of the plastic nut, and solves the problem of low assembly efficiency of copper nuts and plastic nuts in the prior art.

[0076] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0077] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0078] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fully automatic plastic nut fastening device, characterized in that, include: Tightening component (10), wherein the tightening head (13) of the tightening component (10) is provided with a nut (1) to be assembled; A stop (161) is disposed at the end of the inner cavity of the tightening head (13), the stop (161) being used to contact the end of the nut (1) to be assembled; the stop (161) has a stationary state with its position fixed relative to the tightening head (13) and a pushing state with its movement relative to the tightening head (13) along the extending direction of the inner cavity of the tightening head (13); The tightening member (10) is reciprocally movable along the extension direction of the tube (2) to be assembled, so as to move to the loading state or the reset state; when the tightening member (10) is in the loading state, the stop member (161) is in the stationary state, the tightening member (10) moves toward the tube (2) to be assembled and is rotatably arranged around the axis of the nut (1) to be assembled, so as to perform thread tightening operation; when the tightening member (10) is in the reset state, the stop member (161) is in the pushing state, the tightening member (10) moves away from the tube (2) to be assembled, so that the stop member (161) pushes out the nut (1) remaining in the inner cavity of the tightening head (13).

2. The fully automatic plastic nut-driving equipment according to claim 1, characterized in that, The tightening component (10) includes a tightening head (13) and a connecting support rod (14) connected to each other. The connecting support rod (14) is movably arranged along the extension direction of the tube (2) to be assembled. The tightening head (13) is sleeved on the connecting support rod (14) and has at least two degrees of freedom in different directions relative to the connecting support rod (14).

3. The fully automatic plastic nut-driving equipment according to claim 2, characterized in that, The tightening head (13) has a through groove (15) on its housing. The through groove (15) extends along the extension direction of the inner cavity of the tightening head (13) and is connected to the inner cavity of the tightening head (13). A limiting ring (16) is sleeved on the tightening head (13). The limiting ring (16) and the tightening head (13) are movably arranged relative to each other along the extension direction of the tube (2) to be assembled. A stop (161) is provided in the limiting ring (16). The stop (161) passes through the through groove (15) and enters the inner cavity of the tightening head (13) to contact the axial end of the nut (1) to be assembled.

4. The fully automatic plastic nut-driving equipment according to claim 3, characterized in that, The fully automatic plastic nut fastening equipment also includes: The ejector clamp (40) includes two ejector claws arranged opposite each other along a first preset direction. The two ejector claws are movably arranged facing each other or away from each other to clamp or release the limiting ring (16) so that the stop (161) switches between the stationary state and the pushing state.

5. The fully automatic plastic nut-driving equipment according to claim 1, characterized in that, The fully automatic plastic nut fastening equipment also includes a positioning mechanism, which includes a first clamping member (20) and a second clamping member (21) spaced apart along the extension direction of the tube (2) to be assembled. The first clamping member (20) and the second clamping member (21) are respectively used to clamp the two ends of the tube (2) to be assembled. The first clamping member (20) and the second clamping member (21) are both movably arranged along a second preset direction to move the tube (2) to be assembled from the feeding station to the tightening station.

6. The fully automatic plastic nut-driving equipment according to claim 5, characterized in that, The positioning mechanism further includes a third clamping member (30), which includes two positioning claws (31) arranged opposite each other along a first preset direction. The two positioning claws (31) are movably arranged facing each other or away from each other to clamp or loosen the copper nut of the tube (2) to be assembled.

7. The fully automatic plastic nut-driving equipment according to claim 5, characterized in that, The fully automatic plastic nut clamping device further includes a first moving part (50), a second moving part (51), and a third moving part (52). The third moving part (52) is disposed on the second moving part (51), and the second moving part (51) is disposed on the first moving part (50). The third moving part (52) is used to clamp the nut (1) to be assembled. The first moving part (50) is movably disposed along a second preset direction, and the second moving part (51) is movably disposed along the extension direction of the tube (2) to be assembled, so that the third moving part (52) drives the nut (1) to be assembled from the waiting position to the tightening head (13).

8. The fully automatic plastic nut fastening equipment according to claim 2, characterized in that, The fully automatic plastic nut fastening device further includes a first drive component (12) and a second drive component (11). The first drive component (12) is driven to connect with the connecting support rod (14) to drive the tightening component (10) to rotate. The second drive component (11) is driven to connect with the first drive component (12) to drive the first drive component (12) and the tightening component (10) to move along the extension direction of the tube (2) to be assembled. The torque of the first drive component (12) is adjustable.

9. The fully automatic plastic nut-driving equipment according to claim 1, characterized in that, The fully automatic plastic nut making equipment also includes a frame (3) and a tightening mechanism. The tightening mechanism includes the tightening component (10). The frame (3) is provided with a vibrating feeding mechanism, a positioning mechanism and the tightening mechanism. The vibrating feeding mechanism includes a vibrating plate (301) and a vibrating conveyor (302). The vibrating plate (301) stores nuts (1) to be assembled. The vibrating conveyor (302) is provided with a conveying channel. The shape of the conveying channel is adapted to the nuts (1) to be assembled. The vibrating conveyor (302) is set to vibrate at a preset frequency so that the nuts (1) to be assembled in the vibrating plate (301) can be moved to the waiting station via the conveying channel.

10. A fully automatic plastic nut fastening system, characterized in that, The device includes a fully automatic plastic nut-making machine as described in any one of claims 1 to 9 and a robot (4), the robot (4) being used to move the tube (2) to be assembled to the loading station.

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