Air conditioner liquid accumulator inner tube numerical control press fitting machine and use method

Abstract

The application discloses an air conditioner liquid accumulator inner tube numerical control press fitting machine and a use method, relates to the technical field of refrigeration equipment, and comprises a rack, one side of the rack is connected with a material distribution assembly, and the other side of the rack is connected with a dust suction station, an inner tube pre-assembly station and an inner tube press fitting station; the material distribution assembly can move horizontally and vertically along the rack and is used for clamping a workpiece to be sequentially conveyed into the dust suction station, the inner tube pre-assembly station and the inner tube press fitting station; the dust suction station is used for driving the workpiece to vibrate so that foreign matters on the workpiece are shaken off, and the shaken-off foreign matters are sucked; the inner tube pre-assembly station is provided with an inner tube pre-assembly mechanism; the inner tube pre-assembly mechanism comprises a feeding mechanism and a transfer mechanism; the feeding mechanism is used for sequentially conveying multiple inner tubes to the transfer mechanism; the transfer mechanism is used for overturning the inner tubes of the feeding assembly to a vertical state and vertically placing the inner tubes into the workpiece; the inner tube press fitting station is provided with an inner tube press fitting mechanism; the inner tube press fitting mechanism can move downwards to press the inner tube in the workpiece into a partition plate to form an interference connection with the partition plate.

Description

Technical Field

[0001] This application belongs to the field of refrigeration equipment technology, specifically relating to a CNC press-fitting machine and its usage method for the inner pipe of an air conditioning liquid receiver. Background Technology

[0002] The receiver-of-charge (ROC) is typically installed on the low-pressure line between the evaporator and the compressor. It prevents liquid refrigerant from impacting the compressor, ensuring that only gaseous refrigerant enters the compressor. To ensure that the refrigerant flowing from the ROC outlet to the compressor is 100% pure gas, completely preventing "liquid slugging" and protecting the compressor, internal tubing, baffles, and filters are usually installed inside the ROC outlet. During assembly, the baffles and filters are typically installed first, followed by the internal tubing.

[0003] In existing technologies, multiple workstations are typically used. However, the liquid reservoir is placed horizontally on the frame using a platform with a V-groove. The opening of the liquid reservoir faces the material platform on one side where the inner tube is placed. On the other side of the material platform, a horizontally placed cylinder is installed. The cylinder then drives the inner tube on the material platform to be pressed into the liquid reservoir. This setup requires ensuring that the cylinder, platform, and reservoir are on the same horizontal line. Furthermore, the platform storing the inner tube needs to be connected to the cylinder for propulsion, necessitating high precision. Installation errors are inherent, leading to misalignment between the inner tube and the reservoir. Additionally, the reservoir is typically placed simply within a V-groove without a separate clamping structure, making it susceptible to contact with the reservoir during cylinder-driven insertion, causing vibration and tilting, resulting in assembly errors. Moreover, with the reservoir also horizontally positioned, the slender inner tube, without any gravity support to maintain a straight line during insertion, is prone to tilting or even elastic bending under axial thrust, causing installation errors between the inner tube and the reservoir. This can also scratch the reservoir's inner wall during installation, potentially causing jamming or even preventing the inner tube from being installed at all. Moreover, the traditional method of directly pressing the inner tube into the workpiece can lead to foreign objects in the inner tube scratching both the inner tube and the workpiece during installation, causing damage to both. Furthermore, the presence of foreign objects can cause jamming between the inner tube and the workpiece, affecting precise assembly and leading to subsequent maintenance, increasing unnecessary rework time, and reducing production efficiency and product quality. Summary of the Invention

[0004] This application provides a CNC press-fit machine and method for using the inner tube of an air conditioner receiver, to solve the aforementioned technical problems. Specifically, pressing the inner tube, located on one side of the receiver, into the receiver horizontally using a cylinder makes it difficult to ensure the accuracy of the alignment between the cylinder, the inner tube, and the receiver, easily leading to installation deviations. Furthermore, vibrations to the inner tube or the receiver during horizontal movement can cause misalignment between the inner tube and the receiver. Moreover, when horizontally driving the inner tube into the receiver, the slender inner tube is easily subjected to external axial forces, causing elastic deformation, resulting in jamming, wear on the inner wall of the receiver, or even failure to install properly. Additionally, foreign objects in the inner tube can scratch the workpiece, causing the inner tube to jam, affecting precise assembly, and reducing production efficiency and product quality.

[0005] The technical solution adopted in this application is as follows:

[0006] A CNC press-fitting machine for the inner pipe of an air conditioning liquid receiver, comprising:

[0007] The frame has a material distribution assembly connected to one side, and a dust collection station, an inner tube pre-assembly station, and an inner tube pressing station connected to the other side.

[0008] The material distribution assembly can move horizontally and vertically along the frame to clamp the workpiece and sequentially transport it to the dust collection station, the inner tube pre-assembly station, and the inner tube pressing station.

[0009] The dust collection station is used to drive the workpiece to vibrate so that foreign objects on the workpiece are shaken off, and to collect the shaken foreign objects.

[0010] The inner tube pre-assembly station has an inner tube pre-assembly mechanism; the inner tube pre-assembly mechanism includes a feeding mechanism and a transfer mechanism; the feeding mechanism is used to sequentially transport multiple inner tubes to the transfer mechanism, and the transfer mechanism is used to flip the inner tube of the feeding assembly into a vertical state and place it vertically into the workpiece;

[0011] The inner tube pressing station has an inner tube pressing mechanism; the inner tube pressing mechanism can move downward to press the inner tube inside the workpiece into the partition and form an interference fit with the partition.

[0012] The material distribution component of this application can move multiple workpieces simultaneously, so that the workpieces are respectively transported to the dust collection station, the inner tube pre-assembly station, or the inner tube pressing station. Workpieces in multiple stations can be processed at the same time, improving production efficiency. Before the inner tube is installed on the workpiece, the dust collection station vibrates and shakes foreign objects on the inner tube to the bottom, and the dust collection device below cleans the foreign objects. This avoids the foreign objects in the inner tube from scratching the workpiece during subsequent pre-assembly or pressing, or even causing installation errors between the inner tube and the workpiece. In severe cases, it can even cause the inner tube to jam and fail to be installed in the accurate position. This application first removes foreign objects from the inner tube, ensuring subsequent assembly accuracy and eliminating factors affecting assembly. Moreover, the inner tube is not directly pressed into the workpiece during the pressing process, but is pre-installed through an inner tube pre-installation mechanism. This allows the inner tube to be pre-positioned in a precise location, facilitating the subsequent inner tube pressing mechanism to press the inner tube into the workpiece in a straight line. This avoids the inability to adjust the inner tube in time when deviations occur due to direct pressing, which could lead to wear between the inner tube and the workpiece or even jamming of the inner tube. Furthermore, this design eliminates the need for excessive pressure in the subsequent inner tube pressing mechanism, preventing excessive stress on the workpiece and inner tube, which could cause breakage. This reduces assembly pressure, extends the service life of the equipment, and separates advance preparation from execution confirmation.

[0013] Furthermore, the inner tube of this application is installed vertically and then pressed into the workpiece vertically by the inner tube pressing mechanism. This avoids the elastic bending that easily occurs in the axial direction when the inner tube is pressed horizontally, which is common with traditional horizontal pressing methods. The inner tube's own weight helps prevent tilting, and with the reservoir vertically fixed, the inner tube hangs naturally under its own weight, automatically achieving initial alignment with the pressing base or positioning hole at the bottom of the reservoir. The pressing head of the inner tube pressing mechanism applies pressure vertically downwards from above, with the force completely coinciding with the inner tube's axis, preventing bending stress and allowing it to be pressed straight into place. This makes the operation of the equipment simple, reliable, and easy to control.

[0014] Preferably, the feeding mechanism includes a feeding assembly and a chain assembly; the feeding assembly includes a material platform connected to the frame and a feeding plate inclinedly connected above the material platform; the feeding plate is connected to adjusting plates distributed along the length direction via adjusting components, so that the adjusting plates can limit the workpiece along the width direction; the chain assembly includes a chain seat connected to the frame and a chain, a drive motor, a top plate, and a lifting cylinder connected to the chain seat; the chain is connected to the drive motor; the lifting cylinder is connected to the top plate; the top plate is rotatably connected to the side of the chain seat corresponding to the feeding plate, so that the workpiece can slide from the feeding plate into the top plate; the lifting cylinder pushes the top plate upward to flip it, so that the workpiece in the top plate is transported into the chain.

[0015] This application enables the sequential transport of inner tubes by setting up a feeding assembly, preventing multiple inner tubes from being transported separately via conveyor belts or individual robotic arms. Conventional methods of using multiple robotic arms to handle inner tubes individually not only complicate the process but also consume significant space. Furthermore, sequential transport of inner tubes via conveyor belts can lead to misalignment and inconsistent placement, hindering precise subsequent gripping. In contrast, the feeding plate in this application's feeding assembly cooperates with the top plate in the chain assembly. The inner tube automatically slides from the feeding plate to the top plate, which can hold only one inner tube at a time. The top plate, under the action of a lifting cylinder, flips the inner tube and transports it into the chain. At this point, the inner tube's axis aligns with the chain's direction of movement, maintaining the inner tube's motion throughout the process and facilitating precise gripping.

[0016] Preferably, the chain assembly further includes a baffle plate and a blocking cylinder; the baffle plate is connected to the end of the chain connected to the sprocket and is used to limit the workpiece along the length of the chain; the blocking cylinder is connected to one side of the chain seat and can extend along the width of the chain seat to block the workpiece, so that a workpiece transport position is formed between the blocking cylinder and the baffle plate, which facilitates the subsequent transfer mechanism to pick up each workpiece in sequence.

[0017] In this application, by setting a blocking cylinder on one side of the chain and a baffle plate at the end of the chain, it is possible to achieve the following: when an inner tube enters the transport position, the blocking cylinder starts to work, and the driving end of the blocking cylinder extends and elongates along the width direction of the chain, thereby forming a transport position that can accommodate one inner tube between the blocking cylinder and the baffle plate. The blocking cylinder can prevent subsequent inner tubes from entering the transport position, thereby ensuring that only one inner tube is retained in the transport position, so that the inner tubes enter the transport position in sequence and are gripped by the gripper assembly of the inner tube clamping component of the transfer mechanism.

[0018] Preferably, the transfer mechanism includes a base, a first transfer assembly, and a second transfer assembly; the first transfer assembly includes a first positioning slide and a first driving device connected to each other; the first positioning slide is connected to a first track of the base, and the first driving device has a gear that meshes with a rack on the inner side of the first track, thereby driving the first positioning slide to move horizontally by rotating the gear relative to the rack; the second transfer assembly includes an inner tube clamping assembly, a second positioning slide, and a second driving device; the second positioning slide is connected to a second track of the first positioning slide, and the second driving device is connected above the second positioning slide, capable of driving the second positioning slide to move up and down relative to the first positioning slide; the inner tube clamping assembly is connected below the second positioning slide, capable of clamping and flipping the inner tube to a vertical position.

[0019] This application enables the inner tube clamping assembly to move upward by setting a first transfer component of the transfer mechanism, thereby driving the inner tube to move upward. The second transfer component of the transfer mechanism enables the inner tube clamping assembly to move along the width direction of the frame, thereby enabling the workpiece to move towards the inner tube pre-assembly station. The inner tube clamping assembly can flip the inner tube, turning the inner tube, which was originally horizontal in the transport position, into a vertical position. Then, under the driving action of the first and second transfer components of the transfer mechanism, the vertical inner tube is placed downward into the workpiece.

[0020] Preferably, the inner tube pressing mechanism includes a positioning seat, a driving assembly, and a pressing assembly; the positioning seat is connected to the frame, the driving assembly is connected above the positioning seat, and the pressing assembly is connected inside the positioning seat; the pressing assembly includes a pressing plate, a pressing rod, and a pressing head; the pressing plate is connected below the driving assembly, the pressing rod is connected below the pressing plate, and the pressing head is connected below the pressing rod. The pressing head can extend into the inner tube, and the bottom end of the pressing rod can abut against the end of the inner tube, so that the inner tube is pressed into the partition.

[0021] This application, by setting up an inner tube pressing mechanism, enables the inner tube to be pressed vertically downwards into the partition plate to form an interference fit. This avoids the installation errors caused by the misalignment between the inner tube and the workpiece due to the traditional horizontal pressing method. Traditional horizontal pressing of the inner tube, lacking the support of gravity in the horizontal direction, easily leads to misalignment of the inner tube due to the horizontal and axial forces acting on one end. A misaligned inner tube can scratch the inner wall of the workpiece during installation and may even cause the inner tube to jam. Furthermore, even a slight bend in the inner tube during horizontal pressing results in uneven compression of the sealing ring, with one side pressed tightly and the other loosely. In contrast, the pressing head of this application applies pressure vertically downwards from above, with the force perfectly aligned with the inner tube's axis. This prevents bending stress on the inner tube, allowing it to be pressed straight into place. The inner tube is uniformly and concentrically compressed in all directions, forming a perfect annular seal. This makes the operation of the equipment simple, reliable, and easy to control.

[0022] A CNC press-fitting machine for an air conditioner receiver inner tube further includes a flux station located before the inner tube pre-fitting station; the flux station has a flux cup assembly; the flux cup assembly includes a flux cup and a driving component; one end of the driving component is connected to the bottom of the flux cup, and the end of the flux cup facing the workpiece has a bowl-shaped receiving groove containing flux. The driving component drives the flux cup to move upward so that the bottom end of the workpiece is located in the receiving groove, so that the flux is adhered to the end of the workpiece.

[0023] Preferably, the dust collection station includes a first dust collection station and a second dust collection station. The first dust collection station is located before the flux station, and the second dust collection station is located after the flux station and before the inner tube pre-assembly station. The first dust collection station includes a vibration assembly and a dust collection device connected to each other. The vibration assembly includes a vibration table, a vibration cylinder, and a wire tube. The vibration table has a mounting position for clamping the workpiece. The vibration cylinder is connected to one side of the vibration table, and the wire tube is connected to the bottom of the vibration table and can communicate with the mounting position. The dust collection device is connected to the wire tube. The vibration cylinder can cause the vibration table to vibrate, which drives the workpiece to vibrate so that foreign objects on the workpiece fall into the wire tube. The dust collection device is used to suck up the fallen foreign objects.

[0024] This application achieves thorough cleaning of foreign objects at both ends of the inner tube by setting up a first and a second dust collection station. The dust collection of the first and second ends of the inner tube is completed before the inner tube pre-assembly station. The purpose of this is to ensure that the inner tube is free of impurities, preventing impurities from entering the workpiece and causing scratches on the workpiece or the inner tube during the pressing process, and preventing problems such as the inner tube getting stuck or even being unable to be installed. This application reduces the time spent on unnecessary rework and repeated quality inspections, thereby further accelerating the production cycle and improving production efficiency.

[0025] This application also relates to a method for using a CNC press-fitting machine for the inner pipe of an air conditioning receiver, based on the aforementioned CNC press-fitting machine for the inner pipe of an air conditioning receiver, the steps of which include:

[0026] S1: The workpiece is transported to the first dust collection station by the robot arm, and foreign objects in the workpiece are sucked out by the first dust collection station;

[0027] S2: The first clamping component of the material distribution component moves toward the first dust collection station to transport the workpiece in the first dust collection station to the flux station, and the flux station applies flux to the end of the workpiece.

[0028] S3: The second clamping component of the material distribution component moves toward the flux station to transport the workpiece in the flux station to the second dust collection station of the dust collection station, and the foreign matter in the workpiece is sucked up by the second dust collection station.

[0029] S4: The third clamping component of the material distribution component moves toward the second dust collection station to transport the workpiece in the second dust collection station to the inner tube pre-assembly station, and the inner tube is pre-assembled into the workpiece through the inner tube pre-assembly station.

[0030] S5: The fourth clamping component of the material distribution assembly moves toward the inner tube pre-assembly station to transport the workpiece in the inner tube pre-assembly station to the inner tube pressing station. The inner tube is then pressed into the partition of the workpiece by the inner tube pressing station to form an interference fit with the partition.

[0031] In step S3, after the second clamping assembly clamps the workpiece in the flux station, it flips the workpiece 180° and then transports it to the second dust collection station, so that the other end of the workpiece faces down so that the other end of the workpiece can be dusted.

[0032] In step S5, the fourth clamping component of the material distribution assembly can transport the workpiece to the non-powered spindle of the inner tube pressing station, and clamp the workpiece by the three-bend clamp inside the non-powered spindle.

[0033] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0034] 1. This application, through the feeding mechanism with an inner tube pre-assembly mechanism, enables each inner tube to enter the transport position sequentially and be transported to the liquid reservoir in sequence, achieving precise control. Furthermore, the transfer mechanism can move the inner tube in the transport position of the feeding mechanism to directly above the workpiece held by the unpowered spindle. The transfer mechanism can also flip the inner tube to a vertical position and pre-assemble it into the workpiece vertically by pressing it in. This vertical pre-assembly method not only avoids the axial driving of the inner tube caused by traditional horizontal assembly, which leads to elastic deformation of the inner tube and causes wear, scratches on the workpiece, or even jamming and inability to install, but also avoids the problems caused by the traditional horizontal assembly.

[0035] Furthermore, this application removes foreign objects from the inner tube via a dust extraction station before pre-assembly, preventing impurities from affecting subsequent pre-assembly and press-fitting, avoiding the risk of foreign objects affecting assembly accuracy and scratching the workpiece. Moreover, this application pre-installs the inner tube into the workpiece in a pre-assembly manner, and then presses it into place using an inner tube press-fitting station, achieving an interference fit between the inner tube and the partition. This method aims to pre-position the inner tube and the workpiece, preventing machining errors caused by misalignment between the inner tube and the workpiece when directly pressing the inner tube into the workpiece via the inner tube press-fitting mechanism. Such errors would necessitate further inspection of the machined workpiece, or even render it unusable. Therefore, this application pre-installs the inner tube into the corresponding position inside the workpiece, so that the inner tube is installed in the precise position in advance. The inner tube pressing mechanism only needs to press the inner tube downwards in a straight line according to the existing state of the inner tube. Each step of the operation is more delicate and precise. Moreover, while the previous workpiece is being pre-installed with the inner tube, the next workpiece can be pressed at the same time, thereby speeding up the production cycle, realizing assembly line production, improving production quality and increasing production efficiency. Attached Figure Description

[0036] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0037] Figure 1 This is a schematic diagram of a CNC press-fitting machine for the inner pipe of an air conditioning liquid receiver according to one embodiment of this application;

[0038] Figure 2 This is a cross-sectional schematic diagram of a non-powered spindle for a CNC press-fitting machine for an air conditioner receiver inner tube, according to one embodiment of this application.

[0039] Figure 3 This is a schematic diagram of the feeding assembly of the feeding mechanism of the inner tube pre-installation mechanism of an air conditioner liquid receiver inner tube CNC press-fitting machine according to one embodiment of this application;

[0040] Figure 4 This is a schematic diagram of the chain assembly of the feeding mechanism of the inner tube pre-assembly mechanism of an air conditioner liquid receiver inner tube CNC press-fitting machine according to one embodiment of this application;

[0041] Figure 5 This is a schematic diagram of the transfer mechanism of the inner tube pre-installation mechanism of an air conditioner liquid receiver inner tube CNC press-fitting machine under one embodiment of this application, taken from a first angle.

[0042] Figure 6 This is a schematic diagram of the transfer mechanism of the inner tube pre-installation mechanism of an air conditioner liquid receiver inner tube CNC press-fitting machine according to one embodiment of this application from another angle.

[0043] Figure 7 This is a schematic diagram of the inner tube clamping assembly of the inner tube pre-installation mechanism of an air conditioner liquid receiver inner tube CNC press-fitting machine according to one embodiment of this application;

[0044] Figure 8 yes Figure 7 Schematic diagram of the DD section;

[0045] Figure 9 This is a schematic diagram of the inner tube pressing mechanism of a CNC pressing machine for an air conditioner liquid receiver, according to one embodiment of this application.

[0046] Figure 10 This is a cross-sectional schematic diagram of the flux station of a CNC press-fitting machine for the inner pipe of an air conditioner liquid receiver, according to one embodiment of this application.

[0047] Figure 11 This is a cross-sectional schematic diagram of the first dust extraction station of a CNC press-fitting machine for an air conditioner liquid receiver inner tube according to one embodiment of this application;

[0048] Figure 12 This is a schematic diagram of the material distribution assembly of a CNC press-fitting machine for the inner tube of an air conditioner liquid receiver, according to one embodiment of this application;

[0049] Figure 13 This is a top view of a CNC press-fitting machine for the inner pipe of an air conditioning liquid receiver, according to one embodiment of this application.

[0050] In the picture,

[0051] 1. Frame; 2. First dust extraction station; 3. Flux station; 4. Second dust extraction station; 5. Inner tube pre-assembly station; 6. Inner tube pressing station;

[0052] 7. Non-powered spindle; 71. Base; 72. Pneumatic clamping chuck; 73. Positioning rod;

[0053] 8. Inner tube pre-assembly mechanism; 81. Feeding mechanism; 811. Feeding assembly; 8111. Feeding plate; 8112. Material platform; 8113. Adjusting plate; 812. Chain assembly; 8121. Chain seat; 8122. Chain; 8123. Lifting cylinder; 8124. Top plate; 8125. Baffle plate; 8126. Blocking cylinder; 82. Transfer mechanism; 821. Base; 822. Transfer assembly; 8221. First drive device; 8222. First positioning slide; 8223. Second positioning slide; 8224. Second drive device;

[0054] 9. Inner tube clamping assembly; 91. Drive cylinder; 92. Rack and pinion push rod; 93. Rotating shaft; 94. Connecting gear; 95. Gripper assembly; 951. Gripper cylinder; 952. Gripper;

[0055] 10. Inner tube pressing mechanism; 101. Positioning seat; 102. Drive assembly; 103. Pressing assembly; 1031. Pressing plate; 1032. Pressing rod; 1033. Pressing head;

[0056] 11. Flux cup; 12. Drive unit; 13. First vibration cylinder; 14. Nylon part; 15. Vibration table; 16. Spring assembly; 161. Connecting rod; 162. Spring; 163. Vibration block; 17. Steel wire tube;

[0057] 18. Material distribution assembly; 181. Support column; 182. Truss assembly; 1821. Truss; 1822. Clamping assembly; 183. Drive mechanism; 184. Rotary cylinder;

[0058] 19. Workpiece. Detailed Implementation

[0059] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0060] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0061] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to 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 of the present invention.

[0062] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0064] Example 1

[0065] A CNC press-fitting machine for the inner pipe of an air conditioning liquid receiver, such as Figures 1-13 As shown, it includes:

[0066] The frame 1 has a material distribution assembly 18 connected to one side, and a dust collection station, an inner tube pre-assembly station 5, and an inner tube pressing station 6 connected to the other side.

[0067] The material distribution assembly 18 can move horizontally and vertically along the frame 1 to clamp the workpiece 19 and sequentially transport it to the dust collection station, the inner tube pre-assembly station 5 and the inner tube pressing station 6.

[0068] The dust collection station is used to drive the workpiece 19 to vibrate so that foreign objects on the workpiece 19 are shaken off, and to collect the shaken foreign objects.

[0069] The inner tube pre-assembly station 5 has an inner tube pre-assembly mechanism 8; the inner tube pre-assembly mechanism 8 includes a feeding mechanism 81 and a transfer mechanism 82; the feeding mechanism 81 is used to sequentially transport multiple inner tubes to the transfer mechanism 82, and the transfer mechanism 82 is used to flip the inner tube of the feeding assembly 811 into a vertical state and place it vertically into the workpiece 19.

[0070] The inner tube pressing station 6 has an inner tube pressing mechanism 10; the inner tube pressing mechanism 10 can move downward to press the inner tube in the workpiece 19 into the partition and form an interference fit with the partition.

[0071] A material distribution assembly 18 is distributed and connected along the length of the frame 1 on one side. The material distribution assembly 18 can move horizontally and vertically along the frame 1 to transport workpieces 19. The dust collection station of this application includes a first dust collection station 2 and a second dust collection station 4, such as... Figure 1 and Figure 13 As shown, on the other side of the frame 1, along the processing direction of the workpiece 19, there are sequentially arranged a first dust extraction station 2, a flux station 3, a second dust extraction station 4, an inner tube pre-assembly station 5, and an inner tube pressing station 6.

[0072] like Figure 12As shown, the material distribution assembly 18 includes a support column 181, a truss assembly 182, a drive mechanism 183, and a rotary cylinder 184. The bottom of the support column 181 has a positioning slider, which can be slidably connected to the connecting rails distributed along the length direction of the frame 1. A motor reducer is connected to the bottom of the support column 181, and a helical gear is connected to the output end of the motor reducer. The top of the frame 1 has a helical rack, which meshes with the helical gear, thereby driving the support column 181 to move along the length direction of the frame 1 through the helical gear, the helical rack, and the motor reducer. The top of the support column 181 is connected to the drive mechanism 183, which is preferably a cylinder, driving the truss 1821 to move up and down along the support column 181. The support column 181 faces the inner tube pre-... A truss assembly 182 is connected to one side of the loading station 5. The truss assembly 182 includes a truss 1821 and multiple clamping assemblies 1822. The driving end of the drive mechanism 183 is connected to the top of the truss 1821. The truss 1821 is slidably connected to the support column 181 through a slider and a slide rail. The clamping assembly 1822 includes a connecting cylinder, a clamping mounting base, and two oppositely arranged grippers. The grippers are rotatably connected to the clamping mounting base via a shaft. One end of the gripper is connected to a gear. The clamping mounting base has a rack, so that the connecting cylinder drives the rack to move and drive the two grippers to rotate relative to each other, thereby adjusting the distance between the two grippers to accommodate workpieces 19 of different sizes. In this application, since there are five loading stations, five clamping assemblies 1822 are preferred. Figure 13 As shown, from left to right, the components are the first clamping assembly 1822, the second clamping assembly 1822, the third clamping assembly 1822, the fourth clamping assembly 1822, and the fifth clamping assembly 1822. The second clamping assembly 1822 on the left side of the figure is also connected to a rotary cylinder 184. The rotary cylinder 184 drives the entire clamping assembly 1822 to rotate along the truss 1821. This facilitates the second clamping assembly 1822 moving from the flux station 3 to the second dust collection station 4, allowing the workpiece 19 to be rotated 180° and placed into the second dust collection station 4, so that the other end of the workpiece 19 can be dusted.

[0073] like Figure 1 and Figure 13As shown, the first dust collection station 2 is used to vibrate the workpiece 19 so that foreign objects inside the workpiece 19 can be shaken off and the foreign objects inside the workpiece 19 can be sucked up and cleaned; the workpiece 19 of the first dust collection station 2 is conveyed to the flux station 3 through the material distribution component 18. The flux station 3 can attach flux to the bottom of the workpiece 19 to prepare for subsequent preheating of the main fuel. After the workpiece 19 is coated with flux, it is transported from the flux station 3 to the second dust collection station 4 by the material distribution assembly 18. At this time, the material distribution assembly 18 can rotate the workpiece 19 held in the flux station 3 by 180°, so that the originally upward end is facing downward. This is to facilitate the second dust collection station 4 to clean foreign objects from the other end of the workpiece 19. In this way, the setting of the first dust collection station 2 and the second dust collection station 4 can ensure that both ends of the workpiece 19 can be thoroughly cleaned. This makes it easier to avoid impurities in the inner tube when installing the inner tube, which would affect the subsequent assembly. This improves the accuracy of the assembly, reduces unnecessary rework and repeated quality inspection time, and further speeds up the production cycle and improves production efficiency, as well as product quality. After the foreign matter is removed from the other end of the workpiece 19, the workpiece 19 is transported from the second dust collection station 4 to the inner tube pre-installation station 5 through the material distribution component 18. The inner tube is pre-installed into the interior of the workpiece 19 through the inner tube pre-installation station 5. At this time, the inner tube is placed vertically inside the workpiece 19, but the inner tube and the partition inside the workpiece 19 are not assembled together. The inner tube is only placed above the mounting hole on the partition, and the inner tube is not pressed into the partition.

[0074] This application, through the feeding mechanism 81 of the inner tube pre-assembly mechanism 8, enables each inner tube to sequentially enter the transport position and be transported sequentially to the liquid reservoir, achieving precise control. Furthermore, the transfer mechanism 82 can move the inner tube in the transport position of the feeding mechanism 81 to directly above the workpiece 19 held by the non-powered spindle 7. The transfer mechanism 82 can also flip the inner tube to a vertical position, pre-assembling it vertically into the workpiece 19. This vertical pre-assembly method not only avoids the axial driving of the inner tube in traditional horizontal assembly, which causes elastic deformation and leads to wear, scratches, or even jamming and installation failure between the inner tube and the workpiece 19, but also removes foreign objects from the inner tube through a dust extraction station before pre-assembly. This prevents impurities in the inner tube from affecting subsequent pre-assembly and pressing, avoiding the risk of foreign objects affecting assembly accuracy and scratching the workpiece 19. Furthermore, this application pre-installs the inner tube into the workpiece 19 in a pre-installed manner, and then presses the inner tube into place using the inner tube pressing station 6, achieving an interference fit between the inner tube and the partition. The purpose of this method is to pre-position the inner tube and the workpiece 19, preventing machining errors caused by deviations between the inner tube and the workpiece 19 when directly pressing the inner tube into the workpiece 19 via the inner tube pressing mechanism 10. This would necessitate further inspection of the machined workpiece 19, or even its scrapping. Therefore, by pre-installing the inner tube into the corresponding position within the workpiece 19, this application ensures the inner tube is installed in a precise location beforehand. The inner tube pressing mechanism 10 then simply presses the inner tube downwards in a straight line according to its current state. Each step is more precise and detailed. Moreover, while the previous workpiece 19 is undergoing inner tube pre-installation, the next workpiece 19 can be pressed into place simultaneously, thus accelerating the production cycle, achieving assembly line production, and improving both production quality and efficiency.

[0075] Furthermore, in addition to the inner tube pre-assembly mechanism 8, the inner tube pre-assembly station 5 also has a non-powered spindle 7. The function of the non-powered spindle 7 is to clamp the workpiece 19. The inner tube pre-assembly mechanism 8 can transport the inner tube to the top of the workpiece 19 and pre-assemble it into the workpiece 19.

[0076] Specifically, such as Figure 2 The diagram shows the structure of the unpowered spindle 7. As can be seen from the diagram, the unpowered spindle 7 includes a base 71, a pneumatically pressurized chuck 72, and a positioning rod 73. The pneumatically pressurized chuck 72 is connected to the top of the base 71, and the positioning rod 73 is connected inside the base 71. The positioning rod 73 is threaded onto the base 71, allowing the bottom of the workpiece 19 to be supported by adjusting the height of the positioning rod 73. The pneumatically pressurized chuck 72 has multiple chucks inside, which can move relative to the pneumatically pressurized chuck 72 under pneumatic drive to clamp the circumference of workpieces 19 of different diameters.

[0077] In a preferred embodiment, the feeding mechanism 81 includes a feeding assembly 811 and a chain assembly 812; the feeding assembly 811 includes a material platform 8112 connected to the frame 1 and a feeding plate 8111 inclinedly connected above the material platform 8112; the feeding plate 8111 is connected to an adjusting plate 8113 distributed along the length direction via an adjusting member, so that the adjusting plate 8113 can limit the workpiece 19 along the width direction; the chain assembly 812 includes a chain seat 8121 connected to the frame 1 and a chain seat 8121 connected to the chain seat 8121. The chain 8122 is connected to the drive motor; the lifting cylinder 8123 is connected to the top plate 8124; the top plate 8124 is rotatably connected to the side of the chain seat 8121 corresponding to the feeding plate 8111, so that the workpiece 19 can slide from the feeding plate 8111 into the top plate 8124; the lifting cylinder 8123 pushes the top plate 8124 to flip upward, so that the workpiece 19 in the top plate 8124 is transported into the chain 8122.

[0078] like Figure 3 The diagram shows a schematic of the feeding assembly 811 of the inner tube pre-assembly mechanism 8. Specifically, the feeding assembly 811 includes a material platform 8112 connected to the frame 1 and a feeding plate 8111 inclinedly connected above the material platform 8112. The feeding plate 8111 is connected to an adjusting plate 8113 distributed along the length direction via an adjusting member, so that the adjusting plate 8113 can limit the workpiece 19 along the width direction. The feeding plate 8111 is directed downward toward the chain 8122 of the chain assembly 812, so that the workpiece 19 can slide down the inclined feeding plate 8111 onto the chain 8122.

[0079] In use, the distance between the adjusting component and the side wall of the feeding plate 8111 is adjusted according to the size of the workpiece 19, i.e., the liquid reservoir. The adjusting component is preferably a threaded rod. One end of the threaded rod is connected to the feeding plate 8111 by bolts, and the other end of the threaded rod is fixedly connected to the adjusting plate 8113. By turning the threaded rod, the length of the threaded rod along the width direction of the feeding plate 8111 is adjusted, thereby adjusting the distance between the adjusting plate 8113 and the side wall of the feeding plate 8111 on the other side of the threaded rod. This allows the reserved space between the adjusting plate 8113 and the side wall of the feeding plate 8111 to allow the workpiece 19 to move. It also guides the direction of movement of the workpiece 19, preventing the workpiece 19 from deviating during its movement on the feeding plate 8111. When the workpiece 19 moves on the feeding plate 8111, the axis of the workpiece 19, i.e., the liquid reservoir, is along the length direction of the feeding plate 8111, which facilitates the smooth sliding of the workpiece 19 onto the top plate 8124 described below.

[0080] Furthermore, the chain assembly 812 includes a drive motor, a conveying device, a top plate 8124, and a lifting cylinder 8123; the conveying device includes a chain seat 8121 and a chain 8122 connected above the chain seat 8121; a lifting cylinder 8123 is connected to one side of the conveying device, and the driving end of the lifting cylinder 8123 is connected to the top plate 8124. The top plate 8124 is rotatably connected to one side of the conveying device and can be arranged opposite to the feeding plate 8111; the inner tube slides down to the top plate 8124 through the feeding plate 8111, and the lifting cylinder 8123 drives the top plate 8124 to flip so as to convey the inner tube into the conveying device.

[0081] like Figure 4 The diagram shows the structure of the chain assembly 812. The chain 8122 can move along the chain seat 8121. A sprocket at one end of the chain 8122 is connected to a drive motor, and a sprocket at the other end of the chain 8122 is rotatably connected to the chain seat 8121. When the drive motor drives the sprocket at one end of the chain 8122 to rotate, the chain 8122 rotates, thereby causing the workpiece 19 on the chain 8122 to move along the extension direction of the chain 8122. The top plate 8124 is rotatably connected to one side of the chain seat 8121 of the conveying device. The top plate 8124 has an L-shaped structure. The first end of the top plate 8124 extends along the height direction of the chain seat 8121, and the second end of the top plate 8124 is perpendicular to the first end and extends horizontally. The second end of the top plate 8124 is used to receive the inner tube sliding down from the feeding plate 8111. The lifting cylinder 8123 is connected to the chain seat 8121 and located below the top plate 8124. The driving end of the lifting cylinder 8123 is set upward, and the driving end of the lifting cylinder 8123 is connected to the second end of the top plate 8124. It can drive the top plate 8124 to flip upward, so that the second end of the top plate 8124, located at the bottom of the chain 8122, flips upward 180° and then flips to the top of the chain 8122, thereby moving the inner tube from the top plate 8124 to the chain 8122.

[0082] Furthermore, the chain assembly 812 also includes a baffle plate 8125 and a blocking cylinder 8126; the baffle plate 8125 is connected to one end of the chain 8122 connected to the sprocket, and is used to limit the workpiece 19 along the length direction of the chain 8122; the blocking cylinder 8126 is connected to one side of the chain seat 8121, and can extend along the width direction of the chain seat 8121 to block the workpiece 19, so that a transport position for the workpiece 19 is formed between the blocking cylinder 8126 and the baffle plate 8125, which facilitates the subsequent transfer mechanism 82 to pick up each workpiece 19 in sequence.

[0083] like Figure 4As shown, the blocking cylinder 8126 is connected to one side of the chain seat 8121, near the output end of the chain 8122; the baffle plate 8125 is connected above the chain seat 8121, near the output end of the chain, and there is a distance between the baffle plate 8125 and the blocking cylinder 8126 greater than the length of the inner tube, so as to accommodate one inner tube. When the driving end of the blocking cylinder 8126 extends outward, a receiving space is formed between the blocking cylinder 8126 and the baffle plate 8125. This receiving space is used to accommodate one workpiece 19. The baffle plate 8125 can abut against the end of the inner tube located in the transport position, thereby achieving the goal of retaining one inner tube in the transport position and blocking the other inner tubes outside. The drive end of the blocking cylinder 8126 can move along the width direction of the chain seat 8121. When an inner tube enters the transport position formed by the blocking cylinder 8126 and the baffle plate 8125, the drive end of the blocking cylinder 8126 extends outward so that the cylinder rod of the blocking cylinder 8126 can form a stop bar above the chain 8122 when it extends outward, so that the next inner tube on the chain 8122 can be blocked by the stop bar and will not continue to move along the chain 8122. In this way, one inner tube is retained in the transport position at a time. After the inner tube is clamped by the moving mechanism described below, the drive end of the blocking cylinder 8126 retracts inward, and the next inner tube moves to the transport position under the action of the chain 8122 to prepare for the next transport, thereby realizing that the inner tubes are pre-loaded into the workpiece 19 one by one.

[0084] In a preferred embodiment, the transfer mechanism 82 includes a base 821, a first transfer component 822, and a second transfer component 822. The first transfer component 822 includes a first positioning slide 8222 and a first driving device 8221 connected to each other. The first positioning slide 8222 is connected to a first track of the base 821. The first driving device 8221 has a gear that meshes with a rack on the inner side of the first track. The gear rotates relative to the rack, thereby pushing the first positioning slide 8222 to move horizontally. The second transfer component 822 includes an inner tube clamping component 9, a second positioning slide 8223, and a second driving device 8224. The second positioning slide 8223 is connected to a second track of the first positioning slide 8222. The second driving device 8224 is connected above the second positioning slide 8223 and can drive the second positioning slide 8223 to move up and down relative to the first positioning slide 8222. The inner tube clamping component 9 is connected below the second positioning slide 8223 and can clamp and flip the inner tube to a vertical position.

[0085] like Figure 5 and Figure 6As shown, a transfer assembly 822 is connected to the base 821. A first bracket is connected to one side of the upper part of the base 821. The first bracket includes two parallel support rods and a support plate connected between the two support rods. A first track is connected to the top of the upper support rod, and a rack is connected to the inner side of the lower support rod. The moving assembly includes a first transfer assembly 822 and a second transfer assembly 822. The first transfer assembly 822 is connected to the first bracket, and the second transfer assembly 822 is connected to the first transfer assembly 822. The first transfer assembly 822 can move relative to the extension direction of the first bracket, that is, it can move along the width direction of the frame 1. The second transfer assembly 822 can move relative to the first transfer assembly 822 along the height direction, that is, it can move along the height direction of the frame 1.

[0086] The first transfer assembly 822 includes a first positioning slide 8222 and a first driving device 8221. The first positioning slide 8222 has a U-shaped structure and is invertedly connected to the top of the base 821. The bottom of the first positioning slide 8222 has a slider that can slide with the first track on the top of the base 821. The first driving device 8221 is connected to the first positioning slide 8222. The first driving device 8221 is preferably a drive motor. The output shaft of the drive motor is connected to a gear. The gear can mesh with the rack on the bottom support rod, so that when the drive motor drives the gear to rotate, the gear can move the rack, thereby driving the slider of the first positioning slide 8222 to move along the first track of the base 821, thereby realizing the movement of the first transfer assembly 822 along the width direction of the frame 1.

[0087] In addition, a second track extending in the vertical direction is connected to one side of the first positioning slide 8222, that is, the side opposite to the first driving device 8221, for sliding connection with the sliding block of the second positioning slide 8223, thereby realizing the movement of the second positioning slide 8223 in the vertical direction of the first positioning slide 8222.

[0088] The second transfer assembly 822 includes a second positioning slide 8223 and a second drive device 8224. The second positioning slide 8223 is connected to a second track on one side of the first positioning slide 8222. The side of the second positioning slide 8223 facing the first positioning slide 8222 has a sliding block that can be slidably connected to the second track. Since the second track extends vertically, the second positioning slide 8223 can move vertically relative to the first positioning slide 8222. The second drive device 8224 is preferably a motor, which is connected to the side of the second positioning slide 8223 facing the first positioning slide 8222. The top of the second positioning slide 8223 is connected to the second drive device 8224. Therefore, the drive end of the second drive device 8224 pushes the second positioning slide 8223 to move up and down along the first positioning slide 8222.

[0089] In addition, an inner tube clamping assembly 9 is also connected inside the second positioning slide 8223 to clamp and flip the inner tube. Figures 5-8 As shown, the transfer assembly 822 further includes an inner tube clamping assembly 9; the inner tube clamping assembly 9 includes a drive cylinder 91, a rack push rod 92, a rotating shaft 93, a connecting gear 94, and a gripper assembly 95; the drive cylinder 91 is connected to one side of the second positioning slide 8223, and the rack push rod 92 is connected to the side of the second positioning slide 8223 connected to the drive cylinder 91. Specifically, a frame can be connected to one side of the second positioning slide, and the rack push rod 92 is slidably connected to the bottom of the frame, thereby stably supporting the rack push rod. 92; The rack push rod 92 is connected to the drive cylinder 91; The rotating shaft 93 is rotatably connected to the second positioning slide 8223, and one end of the rotating shaft 93 is connected to the connecting gear 94, which meshes with the rack push rod 92; The gripper assembly 95 is connected to the other end of the rotating shaft 93, and the gripper assembly 95 has a gripper 952 capable of gripping the inner tube; The rack push rod 92 is driven to move by the drive cylinder 91, thereby driving the gear to rotate, so that the rotating shaft 93 rotates and drives the gripper assembly 95 to rotate so that the inner tube rotates to a vertical state.

[0090] The second positioning slide 8223 has a through hole, and a bearing is installed in the through hole. A rotating shaft 93 is connected to the bearing, so that the rotating shaft 93 can be rotatably connected to the second positioning slide 8223. The rotating shaft 93 is distributed along the width direction of the second positioning slide 8223. A gripper assembly 95 is connected to the outward side of the rotating shaft 93. The gripper assembly 95 includes a gripper cylinder 951 and grippers 952. The two grippers 952 are connected to one side of the gripper cylinder 951. The distance between the two grippers 952 is also adjustable to accommodate the gripping of inner tubes of different sizes. A connecting gear 94 is connected to the inward end of the rotating shaft 93. The connecting gear 94 meshes with a rack push rod 92. The rack push rod 92 is connected to the second positioning slide 8223, and one end of the rack push rod 92 is connected to the driving end of the driving cylinder 91. The driving cylinder 91 is connected to the side of the second positioning slide 8223 facing the first positioning slide 8222.

[0091] In use, the drive end of the drive cylinder 91 pushes the rack push rod 92 to move along the second positioning slide 8223, thereby driving the connecting gear 94 meshing with the rack push rod 92 to rotate, thus causing the gripper assembly 95 to rotate. For example, when the gripper cylinder 951 is in a vertical state, the axis of the cylindrical inner cavity formed between the grippers 952 is horizontal, which makes it easy for the grippers 952 to grip the inner tube located in the transport position. After the inner tube is gripped by the grippers 952, under the action of the first transfer assembly 822 and the second transfer assembly 822, the inner tube is moved to directly above the workpiece 19 of the corresponding unpowered spindle 7. Then the drive cylinder 91 can be started, so that the rack push rod 92 drives the connecting gear 94 to rotate, thereby driving the gripper assembly 95 to rotate, that is, driving the grippers 952 on both sides and the inner tube to rotate, so that the inner tube rotates to a vertical state. Then the first transfer assembly 822 and the second transfer assembly 822 place the inner tube vertically inside the workpiece 19.

[0092] In a preferred embodiment, the inner tube pressing mechanism 10 includes a positioning seat 101, a drive assembly 102, and a pressing assembly 103. The positioning seat 101 is connected to the frame 1, the drive assembly 102 is connected above the positioning seat 101, and the pressing assembly 103 is connected inside the positioning seat 101. The pressing assembly 103 includes a pressing plate 1031, a pressing rod 1032, and a pressing head 1033. The pressing plate 1031 is connected below the drive assembly 102, the pressing rod 1032 is connected below the pressing plate 1031, and the pressing head 1033 is connected below the pressing rod 1032. The pressing head 1033 can extend into the inner tube, and the bottom end of the pressing rod 1032 can abut against the end of the inner tube, so that the inner tube is pressed into the partition.

[0093] like Figure 9The diagram shows the structure of the inner tube pressing mechanism 10. The inner tube pressing mechanism 10 and the unpowered spindle 7 are located in the inner tube pressing station 6. Therefore, the positioning seat 101 corresponds to one side of the unpowered spindle 7, and the pressing assembly 103 can correspond to the top of the unpowered spindle 7, so that the pressing head 1033 of the pressing assembly 103 can be directly facing the workpiece 19 in the unpowered spindle 7, so that the inner tube of the workpiece 19 is pressed into the workpiece 19. Specifically, the press-fitting assembly 103 includes a press-fitting plate 1031 located at the top, which is connected to the bottom of the drive assembly 102. A pressure rod 1032 is connected to the bottom of the press-fitting plate 1031, and a press-fitting head 1033 is connected to the bottom of the pressure rod 1032. The diameter of the press-fitting head 1033 is smaller than that of the pressure rod 1032, and the press-fitting head 1033 can extend into the inner tube. The pressure rod 1032 can abut against the end face of the inner tube. Thus, when the drive end of the drive assembly 102 pushes the pressure rod 1032 downward, the press-fitting head 1033 can extend into the inner tube, and the end of the pressure rod 1032 connected to the press-fitting head 1033 can abut against the end face of the inner tube, thereby press-fitting the inner tube into the partition of the workpiece 19, so that the inner tube and the partition form an interference fit.

[0094] As a preferred embodiment, the CNC press-fitting machine for the inner tube of an air conditioning receiver of this application further includes a flux station 3 located before the inner tube pre-fitting station 5; the flux station 3 has a flux cup 11 assembly; the flux cup 11 assembly includes a flux cup 11 and a driving member 12; one end of the driving member 12 is connected to the bottom of the flux cup 11, and the end of the flux cup 11 facing the workpiece 19 has a bowl-shaped receiving groove, which carries flux. The driving member 12 drives the flux cup 11 to move upward so that the bottom end of the workpiece 19 is located in the receiving groove, so that the flux is adhered to the end of the workpiece 19.

[0095] like Figure 10 The diagram shows a schematic of the flux cup 11 and drive unit 12 in the flux cup 11 assembly. A cylinder is connected to the bottom and is connected to the frame 1. The drive end of the cylinder is connected to the flux cup 11. The flux cup 11 has a square structure and a bowl-shaped receiving groove at the top. The receiving groove contains flux. When the workpiece 19 is placed on the top of the flux cup 11 by the dispensing assembly 18, the drive end of the cylinder drives the flux cup 11 to move upward, so that the receiving groove of the flux cup 11 surrounds the outside of the workpiece 19. The bottom end of the workpiece 19 can extend into the flux in the receiving groove, and the flux adheres to the bottom end of the workpiece 19.

[0096] In addition, the flux station 3 also has a non-powered spindle 7, which is connected to the frame 1. The function of the non-powered spindle 7 is to clamp the workpiece 19.

[0097] Furthermore, the dust collection station includes a first dust collection station 2 and a second dust collection station 4. The first dust collection station 2 is located before the flux station 3, and the second dust collection station 4 is located after the flux station 3 and before the inner tube pre-assembly station 5. The first dust collection station 2 includes a vibration assembly and a dust collection device connected to each other. The vibration assembly includes a vibration table 15, a vibration cylinder, and a wire tube 17. The vibration table 15 has a mounting position for clamping the workpiece 19. The vibration cylinder is connected to one side of the vibration table 15, and the wire tube 17 is connected to the bottom of the vibration table 15 and can communicate with the mounting position. The dust collection device is connected to the wire tube 17. The vibration cylinder can cause the vibration table 15 to vibrate, which drives the workpiece 19 to vibrate so that foreign objects on the workpiece 19 fall into the wire tube 17. The dust collection device is used to suck up the fallen foreign objects.

[0098] like Figure 11 As shown, the first dust collection station 2 includes a connected vibration assembly and a dust collection device; the vibration assembly includes a nylon part 14, a vibration table 15, a first vibration cylinder 13, a spring assembly 16, and a steel wire tube 17; the nylon part 14 is connected to the center of the vibration table 15 for clamping the workpiece 19; multiple spring assemblies 16 are connected to the bottom of the vibration table 15, each spring assembly 16 including a connecting rod 161, a spring 162, and a vibration block 163; one end of the connecting rod 161 is connected to the vibration table 15, and the other end of the connecting rod 161 is connected to the frame 1; the vibration block 163 is sleeved on the outside of the connecting rod 161, and the vibration block 163 is connected to the vibration table 15 by the spring 162; the steel wire tube 17 is connected below the vibration table 15 and can communicate with the nylon part 14; the dust collection device is connected to the steel wire tube 17 to collect foreign objects that have been vibrated and fallen into the steel wire tube 17 from the workpiece 19.

[0099] In use, by activating the first vibrating cylinder 13, the vibrating table 15 is driven to vibrate, thereby causing the nylon part 14 and the workpiece 19 inside the nylon part 14 to vibrate. The vibration of the workpiece 19 will shake foreign objects inside the workpiece 19 into the steel wire tube 17 below. Since the steel wire tube 17 is connected to a dust collection device, the suction pipe of the dust collection device can extend into the steel wire tube 17 to suck up the foreign objects inside the steel wire tube 17. There is a spring 162 between the vibrating block 163 and the vibrating table 15. Therefore, when the first vibrating cylinder 13 drives the vibrating table 15 to vibrate, the spring 162 and the vibrating block 163 cause the vibrating table 15 to vibrate up and down, causing the nylon part 14 and the workpiece 19 to bounce, which is more conducive to shaking off foreign objects inside the workpiece 19.

[0100] The second dust collection station 4 includes a connected vibration device and a dust collection assembly. The vibration device includes a nylon structural component, a vibration platform, a first vibration cylinder 13, a spring 162 connecting assembly, and a steel wire tube 17. The nylon structural component is connected to the center of the vibration platform for clamping the workpiece 19. Multiple spring 162 connecting assemblies are connected to the bottom of the vibration platform. Each spring 162 connecting assembly includes a connecting rod 161, a spring 162, and a vibration connecting block. One end of the connecting rod 161 is connected to the vibration platform, and the other end is connected to the frame 1. The vibration connecting block is sleeved on the outside of the connecting rod 161, and the vibration connecting block is connected to the vibration platform via springs 162. The steel wire tube 17 is connected below the vibration platform and can communicate with the nylon structural component. The dust collection assembly is connected to the steel wire tube 17 to collect foreign objects that have been vibrated and fallen into the steel wire tube 17 from the workpiece 19.

[0101] Example 2

[0102] This application also relates to a method for using a CNC press-fitting machine for the inner pipe of an air conditioning receiver. Based on the above-mentioned CNC press-fitting machine for the inner pipe of an air conditioning receiver, the steps include:

[0103] S1: The workpiece 19 is transported to the first dust collection station 2 of the dust collection station by the robot arm, and the foreign objects in the workpiece 19 are sucked up by the first dust collection station 2;

[0104] Further, in step S1, the robotic arm grips the workpiece 19 and places it inside the nylon part 14 of the vibration assembly in the first dust collection station 2. The workpiece 19 is installed through the mounting groove provided in the nylon part 14. The first vibration cylinder 13 in the first dust collection station 2 is activated. The first vibration cylinder 13 can drive the vibration table 15 to vibrate. Moreover, the lower part of the vibration table 15 is connected to the vibration block 163 through a spring 162, thereby further driving the nylon part 14 and the workpiece 19 inside the nylon part 14 to vibrate. The vibration of the workpiece 19 will shake the foreign objects inside the workpiece 19 into the lower wire tube 17. Since the wire tube 17 is connected to the dust collection device, the suction pipe of the dust collection device can extend into the wire tube 17 to suck up the foreign objects inside the wire tube 17.

[0105] S2: The first clamping component 1822 of the material distribution component 18 moves toward the first dust collection station 2 to transport the workpiece 19 in the first dust collection station 2 to the flux station 3, and the flux station 3 applies flux to the end of the workpiece 19.

[0106] Further, step S2 includes:

[0107] Step S21: The drive mechanism 183 of the material distribution component 18 drives the truss component 182 to move upward, thereby causing the first clamping component 1822 to clamp the workpiece 19 of the first dust collection station 2 to move upward away from the first dust collection station 2.

[0108] Step S22: The motor reducer of the material distribution assembly 18 drives the helical gear to rotate. Since the helical gear meshes with the helical rack of the frame 1, the helical gear moves along the helical rack, thereby driving the support column 181 to move along the length of the frame 1, and moving the first clamping assembly 1822 toward... Figure 13 The flux station 3 on the right side shown in the diagram moves;

[0109] Step S23: The drive mechanism 183 of the material distribution component 18 drives the truss component 182 to move downward, thereby causing the first clamping component 1822 to clamp the workpiece 19 and install it into the non-powered spindle 7 of the flux station 3.

[0110] Step S24: The drive unit 12 of the flux cup 11 assembly drives the flux cup 11 upward until the bottom end of the workpiece 19 extends into the receiving groove, and the flux in the receiving groove adheres to the bottom end of the workpiece 19.

[0111] S3: The second clamping component 1822 of the material distribution component 18 moves toward the flux station 3 to transport the workpiece 19 in the flux station 3 to the second dust collection station 4 of the dust collection station, and the foreign matter in the workpiece 19 is sucked up by the second dust collection station 4.

[0112] Furthermore, step S3 specifically includes:

[0113] Step S31: The drive mechanism 183 of the material distribution component 18 drives the truss component 182 to move upward, thereby causing the second clamping component 1822 to clamp the workpiece 19 of the flux station 3 to move upward away from the flux station 3.

[0114] Step S32: The motor reducer of the material distribution assembly 18 rotates, driving the helical gear to rotate, thereby moving the support column 181 along the length of the frame 1, and moving the second clamping assembly 1822 toward... Figure 13 The second vacuum station 4 on the right side shown in the diagram moves;

[0115] Step S33: The second clamping assembly 1822 flips the workpiece 19 180° so that the other end of the workpiece 19 faces downwards, making it easier to vacuum the other end of the workpiece 19.

[0116] Step S34: The drive mechanism 183 of the material distribution component 18 drives the truss component 182 to move downward, thereby causing the second clamping component 1822 to clamp the workpiece 19 and install it into the nylon structure of the second dust collection station 4.

[0117] Step S35: Activate the second vibration cylinder in the second dust collection station 4. The second vibration cylinder can drive the vibration platform to vibrate. The bottom of the vibration platform is connected to the vibration connecting block through spring 162, which further drives the nylon structural parts and the workpiece 19 in the nylon part 14 to vibrate. The vibration of the workpiece 19 will shake the foreign objects inside the workpiece 19 into the steel wire tube 17 below. Since the steel wire tube 17 is connected to the dust collection component, the suction pipe of the dust collection component can extend into the steel wire tube 17 to suck up the foreign objects inside the steel wire tube 17.

[0118] S4: The third clamping component 1822 of the material distribution component 18 moves toward the second dust collection station 4 to transport the workpiece 19 in the second dust collection station 4 to the inner tube pre-assembly station 5, and the inner tube is pre-assembled into the workpiece 19 through the inner tube pre-assembly station 5.

[0119] Furthermore, step S4 specifically includes:

[0120] Step S41: The drive mechanism 183 of the material distribution component 18 drives the truss component 182 to move upward, thereby causing the third clamping component 1822 to clamp the workpiece 19 of the second dust collection station 4 to move upward away from the second dust collection station 4.

[0121] Step S42: The motor reducer of the material distribution assembly 18 rotates, driving the helical gear to rotate, thereby moving the support column 181 along the length of the frame 1, and moving the third clamping assembly 1822 toward... Figure 13 The inner tube pre-assembly station 5 on the right side of the diagram moves;

[0122] Step S43: The drive mechanism 183 of the material distribution component 18 drives the truss component 182 to move downward, thereby driving the third clamping component 1822 to clamp the workpiece 19 and install it into the unpowered spindle 7 of the inner tube pre-assembly station 5.

[0123] Step S44: The inner tube is conveyed to the feeding plate 8111 by the robot arm, and the inner tube slides through the inclined feeding plate 8111 to the top plate 8124;

[0124] Step S45: The lifting cylinder 8123 drives the top plate 8124 to flip upward, causing the inner tube to flip into the chain 8122. The chain 8122 transports the inner tube to the transport position. The blocking cylinder 8126 is activated to extend along the width of the chain 8122 to cut it in the chain 8122, preventing the next inner tube from entering the transport position. The inner tube is blocked on one side by the baffle plate 8125 in the transport position to prevent the inner tube from falling out of the chain 8122.

[0125] Step S46: The inner tube in the transport position is gripped by the gripper 952 of the gripper assembly 95 of the inner tube clamping assembly 9 of the transfer mechanism 82. Under the action of the transfer assembly 822 of the transfer mechanism 82, it can move in the horizontal and vertical directions to move the inner tube to the workpiece 19 held by the non-powered spindle 7 of the inner tube pre-assembly station 5. Under the action of the transfer assembly 822, the inner tube is transported into the workpiece 19 to complete the pre-assembly of the inner tube.

[0126] S5: The fourth clamping component 1822 of the material distribution component 18 moves toward the inner tube pre-assembly station 5 to transport the workpiece 19 in the inner tube pre-assembly station 5 to the inner tube pressing station 6. The inner tube is pressed into the partition of the workpiece 19 by the inner tube pressing station 6 to form an interference fit with the partition.

[0127] Further, step S5 specifically includes:

[0128] Step S51: The drive mechanism 183 of the material distribution component 18 drives the truss component 182 to move upward, thereby causing the fourth clamping component 1822 to clamp the workpiece 19 of the inner tube pre-assembly station 5 to move upward away from the inner tube pre-assembly station 5.

[0129] Step S52: The motor reducer of the material distribution assembly 18 rotates, driving the helical gear to rotate, thereby moving the support column 181 along the length of the frame 1, and moving the fourth clamping assembly 1822 toward... Figure 13 The inner tube pressing station 6 on the right side of the diagram moves;

[0130] Step S53: The drive mechanism 183 of the material distribution component 18 drives the truss component 182 to move downward, thereby driving the fourth clamping component 1822 to clamp the workpiece 19 and install it into the non-powered spindle 7 of the inner tube pressing station 6, and clamp the workpiece 19 through the three-bend clamp in the non-powered spindle 7.

[0131] Step S54: The pressing plate 1031, pressing rod and pressing head 1033 of the pressing assembly 103 are driven downward by the driving assembly 102 of the inner tube pressing mechanism 10, so that the pressing head 1033 extends into the inner tube and the pressing rod abuts against the end of the inner tube. Under the downward force of the driving assembly 102, the inner tube is pressed into the partition of the workpiece 19 and forms an interference fit with the partition.

[0132] In step S5, the fourth clamping component 1822 of the material distribution component 18 can transport the workpiece 19 to the unpowered spindle 7 of the inner tube pressing station 6.

[0133] After the inner tube is pressed into the workpiece, the fifth clamping assembly is moved to the right by the material distribution assembly to transport the workpiece with the inner tube pressed into the unloading position for subsequent processing.

[0134] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0135] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0136] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A CNC press-fitting machine for the inner pipe of an air conditioner liquid receiver, characterized in that, include: The machine frame has a material distribution assembly connected to one side, and a dust collection station, an inner tube pre-assembly station, and an inner tube pressing station connected to the other side. The material distribution assembly can move horizontally and vertically along the machine frame to clamp the workpieces and sequentially transport them to the dust collection station, the inner tube pre-assembly station, and the inner tube pressing station. The dust collection station is used to drive the workpiece to vibrate so that foreign objects on the workpiece are shaken off, and to collect the shaken foreign objects. The inner tube pre-assembly station has an inner tube pre-assembly mechanism; the inner tube pre-assembly mechanism includes a feeding mechanism and a transfer mechanism; the feeding mechanism is used to sequentially transport multiple inner tubes to the transfer mechanism, and the transfer mechanism is used to flip the inner tubes of the feeding assembly into a vertical state and place them vertically into the workpiece; the feeding mechanism includes a feeding assembly and a chain assembly; the feeding assembly includes a material platform connected to the frame and a feeding plate inclinedly connected above the material platform; the chain assembly includes a chain seat connected to the frame and a chain, a top plate, and a lifting cylinder connected to the chain seat; the lifting cylinder is connected to the top plate; the top plate is rotatably connected to the side of the chain seat corresponding to the feeding plate, so that the workpiece can slide from the feeding plate into the top plate; through A lifting cylinder pushes the top plate upward to flip it, allowing the workpiece inside the top plate to be transported into the chain. The transfer mechanism includes a base, a first transfer assembly, and a second transfer assembly. The first transfer assembly includes a first positioning slide and a first driving device connected together. The first positioning slide is connected to a first track of the base. The second transfer assembly includes an inner tube clamping assembly, a second positioning slide, and a second driving device. The second positioning slide is connected to a second track of the first positioning slide, and the second driving device is connected above the second positioning slide, enabling it to drive the second positioning slide to move up and down relative to the first positioning slide. The inner tube clamping assembly is connected below the second positioning slide, enabling it to clamp and flip the inner tube to a vertical position. The inner tube pressing station has an inner tube pressing mechanism; the inner tube pressing mechanism can move downward to press the inner tube inside the workpiece into the partition and form an interference fit with the partition.

2. The CNC press-fitting machine for the inner pipe of an air conditioner liquid receiver as described in claim 1, characterized in that, The feed plate is connected to an adjusting plate distributed along the length direction by an adjusting component, so that the adjusting plate can limit the workpiece along the width direction; The chain assembly also includes a drive motor connected to the chain mount; the chain is connected to the drive motor.

3. The CNC press-fitting machine for the inner pipe of an air conditioner liquid receiver as described in claim 2, characterized in that, The chain assembly also includes a baffle plate and a blocking cylinder; The baffle plate is connected to one end of the chain that is connected to the sprocket, and is used to limit the workpiece along the length of the chain. The blocking cylinder is connected to one side of the chain seat and can extend along the width of the chain seat to block the workpiece, so that a workpiece transport position is formed between the blocking cylinder and the baffle plate, which facilitates the subsequent transfer mechanism to grab each workpiece in sequence.

4. The CNC press-fitting machine for the inner pipe of an air conditioner liquid receiver as described in claim 1, characterized in that, The first drive device has a gear that meshes with a rack inside the first track, and the first positioning slide is pushed to move horizontally by the rotation of the gear relative to the rack.

5. The CNC press-fitting machine for the inner pipe of an air conditioner liquid receiver as described in claim 1, characterized in that, The inner tube pressing mechanism includes a positioning seat, a drive assembly, and a pressing assembly; the positioning seat is connected to the frame, the drive assembly is connected above the positioning seat, and the pressing assembly is connected inside the positioning seat; The pressing assembly includes a pressing plate, a pressing rod, and a pressing head; the pressing plate is connected below the driving assembly, the pressing rod is connected below the pressing plate, and the pressing head is connected below the pressing rod. The pressing head can extend into the inner tube, and the bottom end of the pressing rod can abut against the end of the inner tube, so that the inner tube is pressed into the partition.

6. The CNC press-fitting machine for the inner pipe of an air conditioning liquid receiver as described in claim 1, characterized in that, It also includes a flux station located before the inner tube pre-assembly station; the flux station has a flux cup assembly; The flux cup assembly includes a flux cup and a driving component; one end of the driving component is connected to the bottom of the flux cup, and the end of the flux cup facing the workpiece has a bowl-shaped receiving groove containing flux. The driving component drives the flux cup to move upward so that the bottom end of the workpiece is located in the receiving groove, so that the flux is adhered to the end of the workpiece.

7. A CNC press-fitting machine for the inner pipe of an air conditioner liquid receiver as described in claim 6, characterized in that, The dust collection station includes a first dust collection station and a second dust collection station. The first dust collection station is located before the flux station, and the second dust collection station is located after the flux station and before the inner tube pre-assembly station. The first dust collection station includes a connected vibration assembly and a dust collection device. The vibration assembly includes a vibration table, a vibration cylinder, and a steel wire tube. The vibration table has a mounting position for clamping the workpiece. The vibration cylinder is connected to one side of the vibration table, and the steel wire tube is connected to the bottom of the vibration table and can communicate with the mounting position. The dust collection device is connected to the steel wire tube. The vibration cylinder can cause the vibration table to vibrate, which drives the workpiece to vibrate so that foreign objects on the workpiece are shaken off into the steel wire tube. The dust collection device is used to pick up the shaken foreign objects.

8. A method for using a CNC press-fitting machine for the inner tube of an air conditioning receiver, based on any one of claims 1-7, characterized in that the steps are as follows: include: S1: The workpiece is transported to the first dust collection station by the robot arm, and foreign objects in the workpiece are sucked out by the first dust collection station; S2: The first clamping component of the material distribution component moves toward the first dust collection station to transport the workpiece in the first dust collection station to the flux station, and the flux station applies flux to the end of the workpiece. S3: The second clamping component of the material distribution component moves toward the flux station to transport the workpiece in the flux station to the second dust collection station of the dust collection station, and the foreign matter in the workpiece is sucked up by the second dust collection station. S4: The third clamping component of the material distribution component moves toward the second dust collection station to transport the workpiece in the second dust collection station to the inner tube pre-assembly station, and the inner tube is pre-assembled into the workpiece through the inner tube pre-assembly station. S5: The fourth clamping component of the material distribution assembly moves toward the inner tube pre-assembly station to transport the workpiece in the inner tube pre-assembly station to the inner tube pressing station. The inner tube is then pressed into the partition of the workpiece by the inner tube pressing station to form an interference fit with the partition.

9. The method of using a CNC press-fitting machine for the inner pipe of an air conditioner liquid receiver as described in claim 8, characterized in that, In step S3, after the second clamping assembly clamps the workpiece in the flux station, it flips the workpiece 180° and then transports it to the second dust collection station, so that the other end of the workpiece faces down so that the other end of the workpiece can be dusted.

10. The method of using a CNC press-fitting machine for the inner pipe of an air conditioner liquid receiver as described in claim 8, characterized in that, In step S5, the fourth clamping component of the material distribution assembly can transport the workpiece to the non-powered spindle of the inner tube pressing station, and clamp the workpiece by the three-bend clamp inside the non-powered spindle.

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