Numerical control press fitting machine for inner tube of air conditioner liquid accumulator

Abstract

This application discloses a CNC pressing machine for the inner tube of an air conditioning receiver, relating to the field of refrigeration equipment technology. The machine includes a frame; an inner tube pre-assembly station and an inner tube pressing station are sequentially arranged on one side of the frame along the workpiece processing direction; a material distribution assembly is connected to the other side of the frame, capable of moving horizontally and vertically along the frame to transport workpieces; the inner tube pre-assembly station includes a first unpowered spindle connected to the frame and an inner tube pre-assembly mechanism, the first unpowered spindle being used to clamp the workpiece, and the inner tube pre-assembly mechanism being able to move relative to the first unpowered spindle to move the inner tube vertically from above the workpiece into the workpiece; the inner tube pressing station includes a second unpowered spindle connected to the frame and an inner tube pressing mechanism, the second unpowered spindle being used to clamp the workpiece, and the inner tube pressing mechanism being able to move relative to the second unpowered spindle to press the inner tube inside the workpiece into a partition, forming an interference fit with the partition.

Description

Technical Field

[0001] This application belongs to the field of refrigeration equipment technology, specifically relating to a CNC press-fitting machine for the inner tube of an air conditioning 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, an inner tube, baffle, and filter are usually placed inside the ROC outlet. During assembly, the baffle and filter are usually installed first, followed by the inner tube.

[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. Utility Model Content

[0004] This application provides a CNC press-fit machine for the inner tube of an air conditioner receiver, to solve the above-mentioned technical problems. The machine uses a cylinder to press the inner tube, located on one side of the receiver, into the receiver horizontally, which 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, during horizontal movement, the inner tube or the receiver may be vibrated, causing 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, which can lead to jamming, wear on the inner wall of the receiver, or even failure to install properly during installation.

[0005] The technical solution adopted in this application is as follows: A CNC pressing machine for the inner tube of an air conditioner liquid receiver is characterized by comprising a frame; an inner tube pre-assembly station and an inner tube pressing station are sequentially arranged on one side of the frame along the processing direction of the workpiece; a material distribution assembly is connected to the other side of the frame, the material distribution assembly being able to move horizontally and vertically along the frame to transport the workpiece. The inner tube pre-assembly station includes a first unpowered spindle connected to the frame and an inner tube pre-assembly mechanism; the inner tube pre-assembly mechanism includes a feeding mechanism and a transfer mechanism correspondingly arranged on one side of the feeding mechanism; the first unpowered spindle is used to clamp the workpiece, the feeding mechanism can transport the inner tube to the transport position, the transfer mechanism has an inner tube clamping assembly that clamps and flips the inner tube, and the transfer mechanism can drive the inner tube clamping assembly to move relative to the first unpowered spindle to move the inner tube vertically from above the workpiece into the workpiece; The inner tube pressing station includes a second unpowered spindle connected to the frame and an inner tube pressing mechanism. The second unpowered spindle is used to clamp the workpiece, and the inner tube pressing mechanism can move relative to the second unpowered spindle to press the inner tube inside the workpiece into the partition and form an interference fit with the partition.

[0006] The feeding mechanism includes a feeding component and a chain component; The feeding assembly has a feeding plate that is inclinedly connected to the frame; The chain assembly includes a conveying device, a top plate, and a lifting cylinder; a lifting cylinder is connected to one side of the conveying device, and the driving end of the lifting cylinder is connected to the top plate. The top plate is rotatably connected to one side of the conveying device and can be set opposite to the feeding plate; the inner tube slides down to the top plate through the feeding plate, and the lifting cylinder drives the top plate to flip so as to transport the inner tube into the conveying device.

[0007] The chain assembly also includes a baffle plate and a blocking cylinder; The baffle plate is connected above the conveying device and is used to limit the movement of the inner tube; The blocking cylinder is connected to one side of the conveying device and can extend along the width direction of the conveying device to block the inner tube, so that a transport position for the inner tube is formed between the blocking cylinder and the baffle plate.

[0008] The transfer mechanism includes a base and a transfer assembly; A first support is provided above the base, a first track is connected to the top of the first support, and the first support has an inner cavity in which a rack is connected. The transfer assembly includes a first driving device, a second driving device, a first positioning slide, and a second positioning slide; the bottom of the first positioning slide has a slider that is slidably connected to a first track; the first driving device has a gear that meshes with a rack and pinion, and drives the first positioning slide to move relative to the base; the second positioning slide is slidably connected to the first positioning slide through a slider assembly, and the second driving device is connected to the second positioning slide, driving the second positioning slide to move along the first positioning slide.

[0009] The inner tube clamping assembly includes a drive cylinder, a rack pusher, a rotating shaft, a connecting gear, and a gripper assembly. The drive cylinder is connected to one side of the second positioning slide, and the rack pusher is connected to the side of the second positioning slide connected to the drive cylinder. The rack pusher is rotatably connected inside the second positioning slide, and a connecting gear is connected to one end of the rotating shaft. The connecting gear meshes with the rack pusher. The gripper assembly is connected to the other end of the rotating shaft and has grippers capable of clamping the inner tube. The drive cylinder drives the rack pusher to move, thereby driving the gear to rotate, causing the rotating shaft to rotate and drive the gripper assembly to rotate so that the inner tube rotates to a vertical position.

[0010] 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.

[0011] Before the inner tube pre-assembly station, there is also a second dust collection station connected to the frame. The second dust collection station includes a second vibration cylinder connected to the frame. The second vibration cylinder can drive the workpiece to vibrate in order to clean foreign objects from the second end of the workpiece.

[0012] Before the second dust extraction station, there is also a flux station connected to the frame. The flux station includes a flux cup and a drive unit connected to the frame. One end of the drive unit is connected to the bottom of the flux cup. The end of the flux cup facing the workpiece has a bowl-shaped receiving groove containing flux. The drive unit 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 adheres to the end of the workpiece.

[0013] Before the flux station, there is also a first dust collection station connected to the frame. The first dust collection station includes a first vibration cylinder connected to the frame. The first vibration cylinder can drive the workpiece to vibrate in order to clean foreign objects from the first end of the workpiece.

[0014] The first vacuuming station includes a connected vibration assembly and a vacuuming device; The vibration assembly includes a nylon component, a vibration table, a first vibration cylinder, a spring assembly, and a steel wire tube. The nylon component is connected to the center of the vibration table for clamping the workpiece. Multiple spring assemblies are connected to the bottom of the vibration table, each spring assembly including a connecting rod, a spring, and a vibration block. One end of the connecting rod is connected to the vibration table, and the other end is connected to the frame. The vibration block is sleeved on the outside of the connecting rod, and the vibration block is connected to the vibration table via a spring. The steel wire tube is connected to the bottom of the vibration table and can communicate with the nylon component. The dust collection device is connected to a steel wire tube to collect foreign objects that have fallen into the steel wire tube due to vibration of the workpiece.

[0015] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: 1. This application relates to a CNC press-fitting machine for the inner tube of an air conditioning liquid receiver, including a frame; a material distribution component is distributed and connected to one side of the frame along the length of the frame, and the material distribution component can move horizontally and vertically along the frame to transport workpieces.

[0016] The inner tube pre-assembly station includes a first unpowered spindle connected to the frame and an inner tube pre-assembly mechanism. The first unpowered spindle is used to clamp the workpiece, and the inner tube pre-assembly mechanism can move relative to the first unpowered spindle to move the inner tube vertically from above the workpiece into the workpiece. The inner tube pre-assembly station allows the inner tube to be pre-installed into the workpiece. At this point, the inner tube is placed vertically inside the workpiece, but it is not actually assembled with the partition plate inside the workpiece; the inner tube is simply placed above the mounting hole on the partition plate, without being pressed into the partition plate. By pre-installing the inner tube into the workpiece in a pre-assembly manner, and then pressing it into place using the inner tube press-fit station, an interference fit is achieved between the inner tube and the partition plate. The purpose of this method is to pre-position the inner tube and the workpiece, preventing machining errors that could occur if the inner tube is directly pressed into the workpiece by the inner tube press-fit mechanism, due to deviations between the inner tube and the workpiece. This 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

[0017] 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: 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; Figure 2 This is a cross-sectional schematic diagram of the first unpowered spindle of a CNC press-fitting machine for an air conditioner receiver inner tube according to one embodiment of this application; 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; 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; 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. 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. 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; Figure 8 yes Figure 7 Schematic diagram of the cross section of DD; 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. 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. 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; 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; 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. In the picture, 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; 7. First unpowered spindle; 71. Base; 72. Pneumatic clamping chuck; 73. Positioning rod; 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; 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; 10. Inner tube pressing mechanism; 101. Positioning seat; 102. Drive assembly; 103. Pressing assembly; 1031. Pressing plate; 1032. Pressing rod; 1033. Pressing head; 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; 18. Material distribution assembly; 181. Support column; 182. Truss assembly; 1821. Truss; 1822. Clamping assembly; 183. Drive mechanism; 184. Rotary cylinder; 19. Workpiece. Detailed Implementation

[0018] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0019] 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.

[0020] 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 do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] 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 utility model according to the specific circumstances.

[0022] 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.

[0023] This application relates to a CNC press-fitting machine for the inner pipe of an air conditioning liquid receiver, such as... Figure 1-13 As shown, the machine includes a frame 1; a material distribution assembly 18 is distributed and connected along the length of the frame 1 on one side, and the material distribution assembly 18 can move horizontally and vertically along the frame 1 to transport workpieces 19. On the other side of the frame 1, along the processing direction of the workpieces 19, 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 are arranged in sequence.

[0024] 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 adhere flux to the bottom of the workpiece 19 to prepare for subsequent preheating of the main fuel. After some flux adheres to the workpiece 19, the workpiece 19 is conveyed 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 clamped from the flux station 3 by 180°, so that the originally upward end is set 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 during subsequent installation, which would affect subsequent assembly, thereby improving assembly accuracy, reducing unnecessary rework and repeated quality inspection time, further accelerating the production cycle and improving production efficiency, and also further improving product quality. After foreign matter is removed from the other end of workpiece 19, workpiece 19 is conveyed from the second dust collection station 4 to the inner tube pre-assembly station 5 via the material distribution assembly 18. The inner tube pre-assembly station 5 pre-installs the inner tube into the workpiece 19. At this point, the inner tube is placed vertically inside the workpiece 19, but it is not actually assembled with the partition inside the workpiece 19; it is simply placed above the mounting hole on the partition and not pressed into it. By pre-installing the inner tube into the workpiece 19 in a pre-assembly manner, and then pressing it into place via the inner tube pressing station 6, an interference fit between the inner tube and the partition is achieved. This method aims to pre-position the inner tube and workpiece 19, preventing machining errors that could occur if the inner tube is directly pressed into the workpiece 19 by the inner tube pressing mechanism 10, due to deviations between the inner tube and workpiece 19. This would necessitate further inspection of the machined workpiece 19 or even render it unusable. Therefore, this application pre-installs the inner tube into the corresponding position inside the workpiece 19, so that the inner tube is installed in the precise position in advance. The inner tube pressing mechanism 10 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 19 is being pre-installed with the inner tube, the next workpiece 19 can be pressed at the same time, thereby speeding up the production cycle, realizing assembly line production, improving production quality and increasing production efficiency.

[0025] As a preferred implementation method, such as 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 slide with the connecting rails distributed along the length 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. A helical rack is located at the top of the frame 1, meshing with the helical gear. Thus, the support column 181 is driven to move along the length of the frame 1 via the helical gear, the helical rack, and the motor reducer. The drive mechanism 183 is connected to the top of the support column 181, preferably using a cylinder, which drives the truss 1821 to move up and down along the support column 181. The truss assembly 182 is connected to the side of the support column 181 facing the inner tube pre-assembly station 5. The truss assembly 182 includes a truss 1821 and multiple clamping assemblies 1822. The drive end of the drive mechanism 183 is connected to the top of the truss 1821. The frame 1821 is slidably connected to the support column 181 via 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 shafts. One end of the gripper is connected to a gear, and the clamping mounting base has a rack. The connecting cylinder drives the rack to move, thereby causing the two grippers to rotate relative to each other, so as to adjust the distance between the two grippers to accommodate workpieces 19 of different sizes. In this application, since there are five workstations, five clamping assemblies 1822 are preferred. The second clamping assembly 1822 on the left side, as shown in 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, so that when the second clamping assembly 1822 moves from the flux station 3 to the second dust collection station 4, the workpiece 19 is flipped 180° and placed into the second dust collection station 4, so that the other end of the workpiece 19 is dusted.

[0026] Furthermore, the inner tube pre-assembly station 5 includes a first unpowered spindle 7 and an inner tube pre-assembly mechanism 8 connected to the frame 1. The first unpowered spindle 7 is used to clamp the workpiece 19, and the inner tube pre-assembly mechanism 8 can move relative to the first unpowered spindle 7 to move the inner tube vertically from above the workpiece 19 into the workpiece 19.

[0027] As a preferred implementation method, such as Figure 2The diagram shows the structure of the first unpowered spindle 7. As can be seen from the diagram, the first unpowered spindle 7 includes a base 71, a pneumatically compressed clamping head 72, and a positioning rod 73. The pneumatically compressed clamping head 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 adjustment of its height to support the bottom of the workpiece 19. The pneumatically compressed clamping head 72 has multiple chucks inside, which can move relative to the pneumatically compressed clamping head 72 under pneumatic drive to clamp the circumference of workpieces 19 of different diameters.

[0028] In a preferred embodiment, the inner tube pre-assembly mechanism 8 includes a feeding mechanism 81; the feeding mechanism 81 includes a feeding assembly 811 and a chain assembly 812. For example... 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.

[0029] 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 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.

[0030] Furthermore, the chain assembly 812 includes 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.

[0031] like Figure 4 The diagram shows the structure of the chain assembly 812. 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. The second end of the top plate 8124 extends in the horizontal direction. The second end of the top plate 8124 is used to receive the inner tube that slides down from the feed 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. The chain 8122 can move along the chain seat 8121. The sprocket at one end of the chain 8122 is connected to the motor, and the sprocket at the other end of the chain 8122 is rotatably connected to the chain seat 8121. When the motor drives the sprocket at one end of the chain 8122 to rotate, the chain 8122 rotates, thereby driving the workpiece 19 on the chain 8122 to move along the extension direction of the chain 8122.

[0032] Furthermore, the chain assembly 812 also includes a baffle plate 8125 and a blocking cylinder 8126; the baffle plate 8125 is connected above the conveying device and is used to limit the inner tube; the blocking cylinder 8126 is connected to one side of the conveying device and can extend along the width direction of the conveying device to block the inner tube, so that a transport position for the workpiece 19 is formed between the blocking cylinder 8126 and the baffle plate 8125.

[0033] 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 rest of the 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.

[0034] In a preferred embodiment, the inner tube pre-assembly mechanism 8 further includes a transfer mechanism 82; the transfer mechanism 82 includes a base 821 and a transfer assembly 822; a first support is provided above the base 821, a first track is connected to the top of the first support, the first support has an inner cavity, and a rack is connected in the inner cavity; the transfer assembly 822 includes a first driving device 8221, a second driving device 8224, a first positioning slide 8222 and a second positioning slide 8223; the bottom of the first positioning slide 8222 has a slider that is slidably connected to the first track; the first driving device 8221 has a gear that meshes with the rack, and drives the first positioning slide 8222 to move relative to the base 821; the second positioning slide 8223 is slidably connected to the first positioning slide 8222 through the slider assembly, and the second driving device 8224 is connected to the second positioning slide 8223, driving the second positioning slide 8223 to move along the first positioning slide 8222.

[0035] 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.

[0036] 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 a rack on the bottom support rod, so that when the drive motor drives the gear to rotate, the gear can move along 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.

[0037] 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.

[0038] 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.

[0039] In addition, an inner tube clamping assembly 9 is connected inside the second positioning slide 8223 to clamp and flip the inner tube. Figure 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, and the rack push rod 92 is connected to the drive cylinder 91; the rotating shaft 93 is rotatably connected inside 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 grippers 952 capable of clamping the inner tube; the drive cylinder 91 drives the rack push rod 92 to move, 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.

[0040] 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.

[0041] 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 first 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.

[0042] 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.

[0043] like Figure 9The diagram shows the structure of the inner tube pressing mechanism 10. The inner tube pressing mechanism 10 and the second unpowered spindle are located in the inner tube pressing station 6. Therefore, the positioning seat 101 corresponds to one side of the second unpowered spindle, and the pressing assembly 103 can correspond to the top of the second unpowered spindle. This allows the pressing head 1033 of the pressing assembly 103 to face the workpiece 19 in the second unpowered spindle, 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.

[0044] In a preferred embodiment, a second dust collection station 4 connected to the frame 1 is included before the inner tube pre-assembly station 5. The second dust collection station 4 includes a second vibration cylinder connected to the frame 1. The second vibration cylinder can drive the workpiece 19 to vibrate in order to clean foreign objects from the second end of the workpiece 19.

[0045] Workpiece 19 first enters the first dust collection station 2 through the material distribution assembly 18, then enters the second dust collection station 4 after passing through the flux station 3. 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 connecting assembly, and a steel wire tube. The nylon structural component is connected to the center of the vibration platform for clamping workpiece 19. Multiple spring connecting assemblies are connected to the bottom of the vibration platform. The spring connecting assembly includes a connecting rod, a spring, and a vibration connecting block. One end of the connecting rod 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, and the vibration connecting block is connected to the vibration platform by a spring. The steel wire tube 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 to pick up any foreign objects that vibrate and fall into the steel wire tube from workpiece 19.

[0046] In a preferred embodiment, a flux station 3 connected to the frame 1 is included before the second dust extraction station 4. The flux station 3 includes a flux cup 11 and a drive unit 12 connected to the frame 1. One end of the drive unit 12 is connected to the bottom of the flux cup 11. The end of the flux cup 11 facing the workpiece 19 has a bowl-shaped receiving groove containing flux. The drive unit 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 adheres to the end of the workpiece 19.

[0047] like Figure 10 The diagram shows the structure of the flux cup 11 and the drive unit 12 at the flux station 3. 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 component 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.

[0048] In a preferred embodiment, a first dust collection station 2 connected to the frame 1 is included before the flux station 3. The first dust collection station 2 includes a first vibration cylinder 13 connected to the frame 1. The first vibration cylinder 13 can drive the workpiece 19 to vibrate in order to clean foreign objects from the first end of the workpiece 19.

[0049] Furthermore, such as 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.

[0050] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0051] 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.

[0052] 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, Includes a frame; on one side of the frame, along the processing direction of the workpiece, there are sequentially arranged inner tube pre-assembly station and inner tube pressing station; on the other side of the frame, there is a material distribution assembly, which can move horizontally and vertically along the frame to transport the workpiece. The inner tube pre-assembly station includes a first unpowered spindle connected to the frame and an inner tube pre-assembly mechanism; the inner tube pre-assembly mechanism includes a feeding mechanism and a transfer mechanism correspondingly arranged on one side of the feeding mechanism; the first unpowered spindle is used to clamp the workpiece, the feeding mechanism can transport the inner tube to the transport position, the transfer mechanism has an inner tube clamping assembly that clamps and flips the inner tube, and the transfer mechanism can drive the inner tube clamping assembly to move relative to the first unpowered spindle to move the inner tube vertically from above the workpiece into the workpiece; The inner tube pressing station includes a second unpowered spindle connected to the frame and an inner tube pressing mechanism. The second unpowered spindle is used to clamp the workpiece, and the inner tube pressing mechanism can move relative to the second unpowered spindle 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 feeding mechanism includes a feeding component and a chain component; The feeding assembly has a feeding plate that is inclinedly connected to the frame; The chain assembly includes a conveying device, a top plate, and a lifting cylinder; a lifting cylinder is connected to one side of the conveying device, and the driving end of the lifting cylinder is connected to the top plate. The top plate is rotatably connected to one side of the conveying device and can be set opposite to the feeding plate; the inner tube slides down to the top plate through the feeding plate, and the lifting cylinder drives the top plate to flip so as to transport the inner tube into the conveying device.

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 above the conveying device and is used to limit the movement of the inner tube; The blocking cylinder is connected to one side of the conveying device and can extend along the width direction of the conveying device to block the inner tube, so that a transport position for the inner tube is formed between the blocking cylinder and the baffle plate.

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 transfer mechanism includes a base and a transfer assembly; A first support is provided above the base, a first track is connected to the top of the first support, and the first support has an inner cavity in which a rack is connected. The transfer assembly includes a first driving device, a second driving device, a first positioning slide, and a second positioning slide; the bottom of the first positioning slide has a slider that is slidably connected to a first track; the first driving device has a gear that meshes with a rack and pinion, and drives the first positioning slide to move relative to the base; the second positioning slide is slidably connected to the first positioning slide through a slider assembly, and the second driving device is connected to the second positioning slide, driving the second positioning slide to move along the first positioning slide.

5. A CNC press-fitting machine for the inner pipe of an air conditioner liquid receiver as described in claim 2, characterized in that, The inner tube clamping assembly includes a drive cylinder, a rack pusher, a rotating shaft, a connecting gear, and a gripper assembly. The drive cylinder is connected to one side of the second positioning slide, and the rack pusher is connected to the side of the second positioning slide connected to the drive cylinder. The rack pusher is rotatably connected inside the second positioning slide, and a connecting gear is connected to one end of the rotating shaft. The connecting gear meshes with the rack pusher. The gripper assembly is connected to the other end of the rotating shaft and has grippers capable of clamping the inner tube. The drive cylinder drives the rack pusher to move, thereby driving the gear to rotate, causing the rotating shaft to rotate and drive the gripper assembly to rotate so that the inner tube rotates to a vertical position.

6. The CNC press-fitting machine for the inner pipe of an air conditioning 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.

7. A CNC press-fitting machine for the inner pipe of an air conditioning liquid receiver as described in claim 1, characterized in that, Before the inner tube pre-assembly station, there is also a second dust collection station connected to the frame. The second dust collection station includes a second vibration cylinder connected to the frame. The second vibration cylinder can drive the workpiece to vibrate in order to clean foreign objects from the second end of the workpiece.

8. A CNC press-fitting machine for the inner pipe of an air conditioning liquid receiver as described in claim 7, characterized in that, Before the second dust extraction station, there is also a flux station connected to the frame. The flux station includes a flux cup and a drive unit connected to the frame. One end of the drive unit is connected to the bottom of the flux cup. The end of the flux cup facing the workpiece has a bowl-shaped receiving groove containing flux. The drive unit 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 adheres to the end of the workpiece.

9. A CNC press-fitting machine for the inner pipe of an air conditioning liquid receiver as described in claim 8, characterized in that, Before the flux station, there is also a first dust collection station connected to the frame. The first dust collection station includes a first vibration cylinder connected to the frame. The first vibration cylinder can drive the workpiece to vibrate in order to clean foreign objects from the first end of the workpiece.

10. A CNC press-fitting machine for the inner pipe of an air conditioning liquid receiver as described in claim 9, characterized in that, The first vacuuming station includes a connected vibration assembly and a vacuuming device; The vibration assembly includes a nylon component, a vibration table, a first vibration cylinder, a spring assembly, and a steel wire tube. The nylon component is connected to the center of the vibration table for clamping the workpiece. Multiple spring assemblies are connected to the bottom of the vibration table, each spring assembly including a connecting rod, a spring, and a vibration block. One end of the connecting rod is connected to the vibration table, and the other end is connected to the frame. The vibration block is sleeved on the outside of the connecting rod, and the vibration block is connected to the vibration table via a spring. The steel wire tube is connected to the bottom of the vibration table and can communicate with the nylon component. The dust collection device is connected to a steel wire tube to collect foreign objects that have fallen into the steel wire tube due to vibration of the workpiece.

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