Feeding device for elbows of air conditioners and air conditioner production system

Abstract

The utility model provides a feeding device for an elbow of an air conditioner and an air conditioner production system. The feeding device comprises an elbow rail which comprises a first section and a second section, and a transition section is arranged between the first section and the second section; the first section is obliquely arranged, the second section is vertically arranged, and the upper end of the second section is connected to the lower end of the first section through the transition section; and the stopping device comprises a driving device and a stopping part, and the stopping part is configured to extend into the first section or the transition section so as to stop the elbow in the elbow rail. The phenomenon of elbow scattering can be prevented; and the operation is convenient and fast, and the shutdown time is shortened. And staff do not need to enter the equipment for operation any more, man-machine separation is achieved, and potential safety hazards caused by the fact that the staff enter the equipment are eradicated.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioner production and manufacturing, in particular to a feeding device for elbows of air conditioners and an air conditioner production system. Background Art

[0002] The ring-throwing machine is used to automatically put welding rings on small U-tubes, i.e. elbows, and is used for the fully automatic production of small U-tube rings in the air conditioner and water heater industries. In the existing ring-throwing machine process, when the elbow track of the ring-throwing machine is empty, employees are required to enter the equipment to guide the material. Because the elbow track is 130 degrees downward at 50 cm (total length 65 cm), the elbow is prone to scattering when it slides to this point, so employees are required to block the elbow with their hands and lead it from the upper end of the track to the pushing station little by little, or use slender tools such as screwdrivers to guide the material to avoid the elbow scattering. Personnel enter the equipment frequently for debugging, which poses a high safety risk and also has problems such as long downtime. Utility Model Content

[0003] In view of the above-mentioned problems, the utility model is proposed to provide a feeding device for the elbow of an air conditioner and an air conditioning production system that overcomes the above-mentioned problems or at least partially solves the above-mentioned problems, so that employees can operate the equipment while standing outside or automatically operate it, and there is no need for employees to enter the equipment to operate it, thus eliminating the safety hazards caused by employees entering the equipment.

[0004] Specifically, the utility model provides a feeding device for an elbow of an air conditioner, which comprises:

[0005] An elbow track, the elbow track comprising a first section and a second section, wherein a transition section is provided between the first section and the second section; the first section is arranged obliquely, the second section is arranged vertically, and the upper end of the second section is connected to the lower end of the first section through the transition section;

[0006] A stop device, comprising a driving device and a stop portion, wherein the stop portion is configured to be inserted into the first section or the transition section to block the elbow in the elbow track; the driving device is configured to drive the stop portion to be inserted into the first section or the transition section, or to drive the stop portion to withdraw from the first section or the transition section.

[0007] Optionally, the driving device comprises a cylinder, and the stopper is mounted on an output shaft of the cylinder; or the driving device comprises a hydraulic cylinder, and the stopper is mounted on an output shaft of the hydraulic cylinder.

[0008] Optionally, the cylinder comprises a piston chamber and a piston, the piston is located in the piston chamber to separate the piston chamber into a first chamber and a second chamber, and the output shaft is connected to the piston;

[0009] The driving device also includes an air source and a reversing valve, and the reversing valve includes a valve core; the valve core has a first movement position and a second movement position; when the valve core is in the first movement position, the air source is connected to the first chamber, and the second chamber is connected to the external environment; when the valve core is in the second movement position, the air source is connected to the second chamber, and the first chamber is connected to the external environment.

[0010] Optionally, the reversing valve is a manual reversing valve, further comprising a handle connected to the valve core, and the valve core is driven by the handle to switch between the first movement position and the second movement position;

[0011] A triplet is arranged between the air source and the reversing valve, and the triplet comprises an air filter, a pressure reducing valve and an oil mist collector which are sequentially connected in series along the air flow direction.

[0012] Optionally, the valve core is movably arranged along its axial direction to switch between the first movement position and the second movement position; a first channel, a second channel, a third channel and a fourth channel are arranged in the valve core;

[0013] The reversing valve further comprises a valve body, the valve core is arranged in the valve body, and a first communication port, a second communication port, and a third communication port are arranged on one side of the valve core, and a fourth communication port and a fifth communication port are arranged on the other side of the valve core; when the valve core is in the first movement position, the first communication port is communicated with the fourth communication port through the first channel, and the fifth communication port is communicated with the second communication port through the second channel; when the valve core is in the second movement position, the first communication port is communicated with the fifth communication port through the fourth channel, and the third communication port is communicated with the fourth communication port through the third channel; the fifth communication port is connected to the first chamber through a pipeline, and the fourth communication port is connected to the second chamber through a pipeline;

[0014] The outlet of the gas source is communicated with the first communication port through a pipeline.

[0015] Optionally, the loading device further includes a control button and a controller, the control button is electrically connected to the controller, and the controller is electrically connected to the driving device, so that the controller controls the driving device according to the action of the control button.

[0016] Optionally, the feeding device further includes a state acquisition device and a controller, the state acquisition device is electrically connected to the controller, the controller is electrically connected to the driving device, and the state acquisition device is configured to detect the state of the elbow in the elbow track so that the controller controls the driving device according to the state of the elbow.

[0017] The state acquisition device is a camera device, so that the controller determines the state of the elbow according to the picture taken by the camera device.

[0018] The stopper is a stopper block or a stopper rod, and the stopper is arranged at the lower end of the first section;

[0019] The stop portion has a stop surface, and the stop surface is perpendicular to the first section;

[0020] The angle between the first section and the second section is 120° to 140°;

[0021] The length of the first section is 45 cm to 55 cm, the length of the second section is 10 cm to 20 cm; and the transition section is an arc section.

[0022] The utility model also provides an air-conditioning production system, comprising any one of the above-mentioned feeding devices of the ring-sleeving machine; the ring-sleeving machine has a workbench, and the lower end of the second section is located at a preset distance above the workbench.

[0023] In the feeding device and air-conditioning production system of the utility model, when drainage is needed, the driving device can be used to drive the stopper to be inserted into the elbow track to prevent the new elbow from moving downward, so that the elbows are stacked. When the number of stacked elbows meets the preset requirements, the stopper is driven to exit the elbow track, and the stacked elbows will continue to fall, that is, all the elbows are allowed to slide down as a whole to the pushing station to be covered with welding rings. That is, when the elbows are neatly placed together, and then the elbows are allowed to slide down as a whole to the pushing station, they are very neat and not scattered, achieving the expected effect, and preventing the elbows from scattering; and the operation is convenient and quick, shortening the downtime problem. It is no longer necessary for employees to enter the equipment to operate, and the distance between man and machine is achieved, eliminating the safety hazards caused by employees entering the equipment.

[0024] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0026] Figure 1 is a schematic structural diagram of a feeding device according to an embodiment of the utility model;

[0027] Figure 2 It is a schematic structural diagram of an elbow track in a feeding device according to an embodiment of the utility model;

[0028] Figure 3 It is a schematic structural diagram of a driving device in a feeding device according to an embodiment of the utility model;

[0029] Figure 4 It is a schematic structural diagram of a driving device in a feeding device according to an embodiment of the utility model; it shows a state where the stopper is inserted into the elbow track;

[0030] Figure 5 It is a schematic structural diagram of a reversing valve in a feeding device according to an embodiment of the utility model;

[0031] Figure 6 It is a schematic structural diagram of a reversing valve in a feeding device according to an embodiment of the utility model;

[0032] Figure 7 is a schematic structural diagram of a feeding device according to an embodiment of the utility model;

[0033] Figure 8 It is a schematic structural diagram of a feeding device according to an embodiment of the utility model. DETAILED DESCRIPTION

[0034] Refer to the following Figures 1 to 8 To describe the feeding device for the elbow of the air conditioner and the air conditioning production system of the embodiment of the utility model. In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0035] Unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix", "couple" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present utility model according to the specific circumstances.

[0036] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0038] Figure 1 is a schematic structural diagram of a feeding device according to an embodiment of the utility model, such as Figure 1 As shown, and refer to Figures 2 to 8 The embodiment of the utility model provides a feeding device for an elbow of an air conditioner, which includes an elbow track 10 and a stop device 20.

[0039] The bend track 10 includes a first section 11 and a second section 12, and a transition section 13 is provided between the first section 11 and the second section 12. Figure 2As shown, the first section 11 is tilted, the second section 12 is vertically arranged, and the upper end of the second section 12 is connected to the lower end of the first section 11 through the transition section 13. The first section 11 is tilted, so that the internal elbow can fall slowly by its own gravity, and it can also ensure that the falling speed is not too fast, so that the ring machine has enough time to put the welding ring on the lower elbow. The second section 12 arranged vertically can ensure that the axis of the elbow is in the horizontal plane, or it can be said that the elbow is transferred and turned, so that the elbow can fall correctly on the workbench of the ring machine. The transition section 13 can be an arc-shaped smooth transition section to facilitate the elbow to flow from the first section 11 to the second section 12.

[0040] The stopper 20 includes a driving device 21 and a stopper 22, wherein the stopper 22 is configured to be inserted into the first section 11 or the transition section 13 to block the elbow in the elbow track 10. The driving device 21 is configured to drive the stopper 22 to be inserted into the first section 11 or the transition section 13, or to drive the stopper 22 to withdraw from the first section 11 or the transition section 13.

[0041] During operation, when a gap appears between the two elbows in the elbow track 10, or when one group of elbows falls and the other group of elbows has not yet appeared, that is, when a gap appears, it can also be said that drainage is needed, the driving device 21 can be used to drive the stopper 22 to be inserted into the elbow track 10 to hinder the new elbow from moving downward so that the elbows are stacked. When the number of stacked elbows meets the preset requirements, the stopper 22 is driven to exit the elbow track 10, and the stacked elbows will continue to fall, that is, all the elbows will slide down as a whole to the pushing station to be covered with welding rings.

[0042] The number of stacked elbows meeting the preset requirements means that when the number of stacked elbows reaches 30 or more, it can also be said that the upper side of the stop device 20 in the first section 11 is full of elbows. That is, when the elbows are neatly placed together, and then the elbows are allowed to slide down as a whole to the pushing station, they are very neat and not scattered, achieving the expected effect, and preventing the elbows from scattering; and the operation is convenient and quick, shortening the downtime problem. Normally, the stop portion 22 is set to a stroke of 3cm to be able to stop. The specific stroke can be determined according to the stop device 20, especially the setting position of the stop portion 22. The feeding device of the embodiment of the utility model avoids the phenomenon of elbow scattering, and no longer requires employees to enter the equipment to operate, thereby achieving the distance between man and machine and eliminating the safety hazards caused by employees entering the equipment.

[0043] In some embodiments of the present invention, the driving device 21 includes a hydraulic cylinder, and the stopper 22 is installed on the output shaft of the hydraulic cylinder. In other embodiments of the present invention, the driving device 21 includes a gear rack mechanism, and the stopper 22 is installed at the end of the rack, and the gear rotates to drive the rack and the stopper 22 to insert into and exit from the elbow track 10. Obviously, the solution using the hydraulic cylinder has the advantages of small size and convenient use.

[0044] In some preferred embodiments of the present invention, Figure 3 and Figure 4 As shown, the driving device 21 includes a cylinder 23, and the stopper 22 is installed on the output shaft of the cylinder 23. The cylinder 23 is used for driving, and the hydraulic oil tank is omitted, and the structure is simpler. The cylinder 23 can be installed near the elbow track 10 to avoid occupying a larger installation space, and will not cause a large change to the existing equipment, and it also has the advantage of low cost.

[0045] In some embodiments of the utility model, the cylinder 23 includes a piston chamber and a piston, the piston is in the piston chamber to separate the piston chamber into a first chamber and a second chamber, and the output shaft is connected to the piston. The driving device 21 also includes an air source 24 and a reversing valve 30, and the reversing valve 30 includes a valve core 31. The valve core 31 has a first movement position and a second movement position. In the first movement position, the valve core 31 enables the air source 24 to communicate with the first chamber, and enables the second chamber to communicate with the external environment. In the second movement position, the valve core 31 enables the air source 24 to communicate with the second chamber, and enables the first chamber to communicate with the external environment.

[0046] Furthermore, the reversing valve 30 is a manual reversing valve, and the feeding device further includes a handle 36 connected to the valve core 31, and the valve core 31 switches between the first movement position and the second movement position under the drive of the handle 36. The valve core 31 is directly pulled or rotated by the handle 36 for control, and there is no need to set up a complex control mechanism, which is low in cost and can fully meet the needs of the feeding device. The manual reversing valve can be installed outside the equipment where it is safe and easy for employees to operate.

[0047] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, a triplet 25 is provided between the air source 24 and the reversing valve 30 , and the triplet 25 includes an air filter, a pressure reducing valve and an oil mist collector which are sequentially connected in series along the air flow direction.

[0048] In some embodiments of the utility model, the valve core 31 is movably arranged along its axial direction, and switches between a first movement position and a second movement position. A plurality of channels are arranged on the valve core 31. The reversing valve 30 also includes a valve body 32, in which the valve core 31 is arranged, and a first communication port 321, a second communication port 322, and a third communication port 323 are arranged on one side of the valve core 31, and a fourth communication port 324 and a fifth communication port 325 are arranged on the other side of the valve core 31. When the valve core 31 is in the first movement position, the first communication port 321 is connected to the fourth communication port 324 through a channel, and the fifth communication port 325 is connected to the second communication port 322 through another channel. When the valve core 31 is in the second movement position, the first communication port 321 is connected to the fifth communication port 325 through a channel, and the third communication port 323 is connected to the fourth communication port 324 through another channel; the fifth communication port 325 is connected to the first cavity through a pipeline, and the fourth communication port 324 is connected to the second cavity through a pipeline. The outlet of the gas source 24 is connected to the first communication port 321 through a pipeline.

[0049] For example, in some embodiments of the present invention, Figure 5 As shown, the valve core 31 is provided with a first channel 311, a second channel 312, a third channel 313 and a fourth channel 314. When the valve core 31 is in the first movement position, the first communication port 321 is communicated with the fourth communication port 324 through the first channel 311, and the fifth communication port 325 is communicated with the second communication port 312 and the second communication port 322. When the valve core 31 is in the second movement position, the first communication port 321 is communicated with the fifth communication port 325 through the fourth channel 314, and the third communication port 323 is communicated with the fourth communication port 324 through the third channel 313.

[0050] In other embodiments of the present invention, Figure 6 As shown, the valve core 31 is provided with a fifth channel 315, a sixth channel 316, and a seventh channel 317. When the valve core 31 is in the first movement position, the first communication port 321 is communicated with the fourth communication port 324 through the fifth channel 315, and the fifth communication port 325 is communicated with the second communication port 322 through the sixth channel 316. When the valve core 31 is in the second movement position, the first communication port 321 is communicated with the fifth communication port 325 through the seventh channel 317, and the third communication port 323 is communicated with the fourth communication port 324 through the sixth channel 316.

[0051] In some other embodiments of the utility model, the first cavity is connected with the first inlet and the first outlet, and the second cavity is connected with the second inlet and the second outlet. The reversing valve includes a valve core, a first valve part and a second valve part. The first valve part has a first valve core cavity, an inlet and two outlets connected with the first valve core cavity, and the outlet of the gas source is connected with the inlet of the first valve part through a pipeline. The two outlets of the first valve part are connected with the first inlet and the second inlet respectively. The second valve part has a second valve core cavity, two inlets and one outlet connected with the second valve core cavity. The two inlets of the second valve part are connected with the first outlet and the second outlet respectively. The outlet of the first valve part is connected with the external environment. The valve core includes a first valve core part rotatably arranged in the first valve core cavity, and a second valve core part rotatably arranged in the second valve core cavity. The first valve core cavity and the second valve core cavity are coaxial and connected, and the first valve core part and the second valve core part are coaxial and connected. Switching between the first movement position and the second movement position is achieved by rotating the valve core.

[0052] In some embodiments of the present invention, Figure 7 As shown, the feeding device further includes a control button 40 and a controller 50, the control button 40 is electrically connected to the controller 50, and the controller 50 is electrically connected to the driving device 21, so that the controller 50 controls the driving device 21 according to the action of the control button 40. For example, the reversing valve 30 can be an electrically controlled reversing valve, which is electrically connected to the controller 50. When the operator needs to introduce the material, the button is pressed, and the controller 50 controls the valve core 31 of the reversing valve 30 to move to the first movement position, so that the stopper 22 is inserted into the first section 11 or the transition section 13. After the introduction is completed, the button is pressed again, and the controller 50 controls the valve core 31 of the reversing valve 30 to move to the second movement position, so that the stopper 22 withdraws from the first section 11 or the transition section 13.

[0053] Further, in some embodiments of the present invention, a plurality of control buttons 40 may be provided, for example, one for controlling the valve core 31 to move to the first movement position, and another for controlling the valve core 31 to move to the second movement position. Of course, the control button 40 and the controller 50 may also form an integral structure, such as a tablet computer.

[0054] The control button 40 can be installed outside the equipment where it is safe and easy for employees to operate.

[0055] In some embodiments of the present invention, Figure 8 As shown, the feeding device further includes a state acquisition device 60 and a controller 50. The state acquisition device 60 is electrically connected to the controller 50, and the controller 50 is electrically connected to the drive device 21. The state acquisition device 60 is configured to detect the state of the elbow in the elbow track 10, so that the controller 50 controls the drive device 21 according to the state of the elbow.

[0056] In this embodiment, the state of the elbow is obtained by the state acquisition device 60, and the controller 50 can actively control according to the state of the elbow, so that there is no need to manually judge whether drainage is needed, which significantly improves the degree of automation of feeding. For example, when it is detected that a gap appears on the upper side of the uppermost elbow in a group of stacked elbows, the drive device 21 can be controlled to drive the stopper 22 to insert into the first section 11 or the transition section 13 to perform a drainage operation. When it is detected that the stacked elbows meet the requirements, the drive device 21 can be controlled to drive the stopper 22 to exit the first section 11 or the transition section 13.

[0057] In some preferred embodiments of the present invention, the state acquisition device 60 is a camera device, so that the controller 50 determines the state of the elbow according to the pictures taken by the camera device. The pictures taken by the camera device can accurately determine whether drainage is required, that is, control the drive device 21 to drive the stopper 22 to insert into the first section 11 or the transition section 13, and drive the stopper 22 to withdraw. Further, the feeding device may also include an alarm device, which can sound an alarm when it is detected that the elbows in the second section 12 are scattered.

[0058] In some preferred embodiments of the utility model, the stopper 22 is disposed at the lower end of the first section 11. If it is disposed at the lower end of the first section 11, there is no need to guide the elbow to move along the first section 11 for a period of time, and more elbows can be stacked, which is more conducive to preventing the elbows from being scattered. The stopper 22 is a stopper block, and the stopper 22 has a stopper surface, and the stopper surface is perpendicular to the first section 11. Of course, the stopper 22 can also be a stopper rod. Figure 2 As shown, a through hole 111 is provided on the side wall at the corresponding position of the elbow rail 10 for inserting and withdrawing the stopper 22 .

[0059] In some preferred embodiments of the present invention, Figure 2 As shown, the angle between the first section 11 and the second section 12 is 120° to 140°. The angle between the first section 11 and the second section 12 is preferably 130°. The length of the first section 11 is 45 cm to 55 cm, and the length of the second section 12 is 10 cm to 20 cm. The transition section 13 is a circular arc section.

[0060] The embodiment of the utility model also provides an air conditioner production system, comprising a ring-sleeving machine and a feeding device in any of the above embodiments. The ring-sleeving machine has a workbench, and the lower end of the second section 12 is located at a preset distance above the workbench. The preset distance can be 1.1, 1.2 or 1.3 times the outer diameter of an elbow. The preset distance is configured to prevent the elbow from flowing out of the second section 12 from causing chaos when the lowermost elbow is not pushed away.

[0061] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A feeding device for an elbow of an air conditioner, characterized in that: include: An elbow track, the elbow track comprising a first section and a second section, wherein a transition section is provided between the first section and the second section; the first section is arranged obliquely, the second section is arranged vertically, and the upper end of the second section is connected to the lower end of the first section through the transition section; A stop device, comprising a driving device and a stop portion, wherein the stop portion is configured to be inserted into the first section or the transition section to block the elbow in the elbow track; the driving device is configured to drive the stop portion to be inserted into the first section or the transition section, or to drive the stop portion to withdraw from the first section or the transition section.

2. The feeding device according to claim 1, characterized in that: The driving device comprises a cylinder, and the stopper is installed on an output shaft of the cylinder; or the driving device comprises a hydraulic cylinder, and the stopper is installed on an output shaft of the hydraulic cylinder.

3. The feeding device according to claim 2, characterized in that: The cylinder comprises a piston chamber and a piston, wherein the piston is located in the piston chamber to separate the piston chamber into a first chamber and a second chamber, and the output shaft is connected to the piston; The driving device also includes an air source and a reversing valve, and the reversing valve includes a valve core; the valve core has a first movement position and a second movement position; when the valve core is in the first movement position, the air source is connected to the first chamber, and the second chamber is connected to the external environment; when the valve core is in the second movement position, the air source is connected to the second chamber, and the first chamber is connected to the external environment.

4. The feeding device according to claim 3, characterized in that: The reversing valve is a manual reversing valve, and further comprises a handle connected to the valve core, and the valve core is driven by the handle to switch between the first movement position and the second movement position; A triplet is arranged between the air source and the reversing valve, and the triplet comprises an air filter, a pressure reducing valve and an oil mist collector which are sequentially connected in series along the air flow direction.

5. The feeding device according to claim 3, characterized in that: The valve core is movably arranged along its axial direction and switches between the first movement position and the second movement position; a plurality of channels are arranged on the valve core; The reversing valve further comprises a valve body, the valve core is arranged in the valve body, and a first communication port, a second communication port, and a third communication port are arranged on one side of the valve core, and a fourth communication port and a fifth communication port are arranged on the other side of the valve core; when the valve core is in the first movement position, the first communication port is communicated with the fourth communication port through one of the channels, and the fifth communication port is communicated with the second communication port through another of the channels; when the valve core is in the second movement position, the first communication port is communicated with the fifth communication port through one of the channels, and the third communication port is communicated with the fourth communication port through another of the channels; the fifth communication port is connected to the first chamber through a pipeline, and the fourth communication port is connected to the second chamber through a pipeline; The outlet of the gas source is communicated with the first communication port through a pipeline.

6. The feeding device according to claim 1, characterized in that: It also includes a control button and a controller, wherein the control button is electrically connected to the controller, and the controller is electrically connected to the driving device, so that the controller controls the driving device according to the action of the control button.

7. The feeding device according to claim 1, characterized in that: Also includes: A state acquisition device and a controller, wherein the state acquisition device is electrically connected to the controller, and the controller is electrically connected to the drive device. The state acquisition device is configured to detect the state of the elbow in the elbow track so that the controller controls the drive device according to the state of the elbow.

8. The feeding device according to claim 7, characterized in that: The state acquisition device is a camera device, so that the controller determines the state of the elbow according to the picture taken by the camera device.

9. The feeding device according to claim 1, characterized in that: The stopper is a stopper block or a stopper rod, and the stopper is arranged at the lower end of the first section; The stop portion has a stop surface, and the stop surface is perpendicular to the first section; The angle between the first section and the second section is 120° to 140°; The length of the first section is 45 cm to 55 cm, the length of the second section is 10 cm to 20 cm; and the transition section is an arc section.

10. An air conditioning production system, comprising a ring-sleeving machine, characterized in that: It also includes a loading device as described in any one of claims 1 to 9; the ring machine has a workbench, and the lower end of the second section is located at a preset distance above the workbench.

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