Water expansion machine for ultrathin oxygen-free copper pipe for air conditioner

Abstract

The utility model relates to the technical field of ultra-thin oxygen-free copper pipe production, and discloses a water expansion machine for an ultra-thin oxygen-free copper pipe for an air conditioner, which comprises a bottom frame, a supporting table fixedly connected to the upper end face of the bottom frame, a lower die fixedly installed at the center of the upper end face of the supporting table, and fixing columns fixedly connected to the four corners of the upper end face of the supporting table. A top plate is fixedly connected to the top ends of the four fixing columns, a mounting frame is fixedly mounted on the top plate, an air cylinder is fixedly mounted on the inner top wall of the mounting frame, a driving rod is fixedly connected to the piston end of the air cylinder, the bottom end of the driving rod vertically and downwards penetrates through the top plate, and an upper mold is fixedly mounted at the end of the driving rod. And the water liquid can be filtered by the filtering device when falling, so that the water liquid can be recycled, and the positioning plate is vertically and downwards inserted into the positioning opening through downward movement of the upper mold, so that the upper mold and the lower mold cannot deviate due to influence of water pressure impact force when the upper mold and the lower mold are closed.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-thin oxygen-free copper tube production, and specifically, to a hydro-expansion machine for ultra-thin oxygen-free copper tubes used in air conditioners. Background Art

[0002] A hydro-expansion machine, also known as a hydraulic tube expanding machine or a hydraulic expansion joint device, is a device specifically used to expand a pipe (such as an ultra-thin oxygen-free copper tube) onto a tube sheet or other components by means of water pressure or hydraulic pressure. This device is widely used in industries such as refrigeration, air conditioning, heat exchangers, radiators, etc., especially in occasions where high-precision and high-quality expansion joints are required. The hydro-expansion machine for ultra-thin oxygen-free copper tubes used in air conditioners is a device specifically used for processing ultra-thin oxygen-free copper tubes. It uses the pressure of water to deform the copper tube, thereby achieving the purpose of expansion joint or forming.

[0003] There are some drawbacks in the existing devices during use. For example, there will be some waste chips and impurities remaining in the water liquid during the processing. Although the water liquid in the existing technology can be collected, it has not been effectively filtered and separated. In such a case, the water liquid cannot be recycled, which not only increases the production cost but also causes serious waste of water resources. Moreover, during the positioning of the mold, when the mold is closed, it may be affected by water pressure impact force or other external factors and shift. This shift will not only affect the manufacturing precision and quality of the product but may also cause mold damage or production accidents, further increasing the production cost and potential safety hazards. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hydro-expansion machine for ultra-thin oxygen-free copper tubes used in air conditioners, to solve the problem that there will be some waste chips and impurities remaining in the water liquid during the processing, and although the water liquid in the existing technology can be collected, it has not been effectively filtered and separated. In such a case, the water liquid cannot be recycled, which not only increases the production cost but also causes serious waste of water resources.

[0005] The utility model provides the following technical solution: A hydro-expansion machine for ultra-thin oxygen-free copper tubes used in air conditioners, including a bottom frame. A support platform is fixedly connected to the upper end surface of the bottom frame. A lower mold is fixedly installed at the center of the upper end surface of the support platform. Fixed columns are fixedly connected to the four corners of the upper end surface of the support platform. A top plate is fixedly connected to the tops of the four fixed columns. An installation frame is fixedly installed on the top plate. A cylinder is fixedly installed on the inner top wall of the installation frame. A driving rod is fixedly connected to the piston end of the cylinder. The driving rod vertically penetrates the top plate downward at the bottom end and an upper mold is fixedly installed at the end. A baffle is fixedly installed at the edge of the upper end surface of the support platform. A plurality of water passing holes are arranged in an array on the support platform. A filtering device for filtering impurities in the water is arranged inside the bottom frame.

[0006] As a preference of the above technical solution, the filtering device includes a load-bearing plate fixedly connected to the inner top side wall of the bottom frame. The upper end surface of the load-bearing plate is fixedly connected with a filtering frame. One end of the filtering frame penetrates through the side wall of the bottom frame, and two sockets are arranged inside the filtering frame. Filtering plates are inserted into the two sockets respectively.

[0007] As a preference of the above technical solution, a water depth sensor is fixedly installed on the inner top of the bottom frame. The water depth sensor is in signal connection with an external controller, and a water inlet pipe is fixedly inserted into the top of the bottom frame.

[0008] As a preference of the above technical solution, limiting sliding rods are arranged in an array on the upper end surface of the upper mold. The tops of the limiting sliding rods vertically penetrate through the top plate upwards, and the limiting sliding rods are slidably connected with the top plate.

[0009] As a preference of the above technical solution, connecting plates are fixedly connected to the outer walls on the opposite sides of the upper mold. The lower end surfaces of the connecting plates are fixedly connected with positioning plates. Positioning platforms are fixedly connected to the outer walls on the opposite sides of the lower mold. Positioning openings adapted to the positioning plates are arranged on the upper end surfaces of the two positioning platforms.

[0010] As a preference of the above technical solution, a plurality of upper mold cavities are arranged in an array on the lower end surface of the upper mold, and a plurality of lower mold cavities are arranged in an array on the upper end surface of the lower mold.

[0011] As a preference of the above technical solution, water guide pipes are fixedly inserted into the opposite side walls of the bottom frame. The water guide pipes are used for connecting an external pressurized water supply device.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, the water liquid is introduced into the bottom frame through the arranged water passing holes, and the water liquid will be filtered by the filtering device during the falling process, so as to filter and separate the waste chips in the water liquid, complete the purification treatment of the water liquid, so that the water liquid can be recycled, reduce the production cost, reduce the waste of water resources, and protect the environment. And the positioning plate is vertically inserted into the positioning opening downward through the downward movement of the upper mold, so that the upper mold and the lower mold will not be offset by the influence of the water pressure impact force during the mold closing process. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of a water expansion machine for ultra-thin oxygen-free copper tubes used in air conditioners;

[0015] Figure 2 It is an enlarged schematic diagram of the lower mold;

[0016] Figure 3 It is an enlarged schematic diagram of the upper mold;

[0017] Figure 4 Schematic diagram of the internal structure of the bottom frame;

[0018] Figure 5 Schematic diagram of the explosion structure of the filtering device.

[0019] In the figure: 10, bottom frame; 11, support platform; 111, water passing hole; 12, lower mold; 121, lower mold cavity; 13, fixing column; 14, top plate; 15, mounting bracket; 16, cylinder; 17, driving rod; 18, upper mold; 181, upper mold cavity; 19, baffle; 20, load plate; 21, filter frame; 22, socket; 23, filter plate; 30, water depth sensor; 31, water inlet pipe; 40, limit slide bar; 50, connecting plate; 51, positioning plate; 52, positioning table; 53, positioning port; 60, water guide pipe. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] Embodiment 1

[0022] As Figure 1 and Figure 4As shown in the figure, the utility model provides a technical solution: a hydroforming machine for ultra-thin oxygen-free copper tubes used in air conditioners, including a bottom frame 10. A support platform 11 is fixedly connected to the upper end surface of the bottom frame 10. A lower mold 12 is fixedly installed at the center of the upper end surface of the support platform 11. Fixed columns 13 are fixedly connected to the four corners of the upper end surface of the support platform 11. A top plate 14 is fixedly connected to the tops of the four fixed columns 13. An installation frame 15 is fixedly installed on the top plate 14. A cylinder 16 is fixedly installed on the inner top wall of the installation frame 15. A driving rod 17 is fixedly connected to the piston end of the cylinder 16. The bottom end of the driving rod 17 vertically penetrates the top plate 14 and an upper mold 18 is fixedly installed at the end. A baffle 19 is fixedly installed at the edge of the upper end surface of the support platform 11. A plurality of water passing holes 111 are arranged in an array on the support platform 11. A filtering device for filtering impurities in water is arranged inside the bottom frame 10. In the specific use process, first, the oxygen-free copper tube is placed in the lower mold 12 and fixed. Then, the cylinder 16 is started to make the upper mold 18 descend to close with the lower mold 12 for hydroforming. After the processing is completed, the cylinder 16 drives the upper mold 18 to rise and reset to take out the finished product. And at this time, the water liquid during hydroforming is blocked by the baffle 19 and concentrated on the support platform 11, and then the water liquid is introduced into the bottom frame 10 through the arranged water passing holes 111 (before processing, oxides, oil stains or other impurities that may exist on the surface of the copper tube may be peeled off or fallen off during hydroforming to form tiny waste chips). And when the water liquid falls, it will pass through the filtering operation of the filtering device, so as to filter and separate the waste chips in the water liquid, complete the purification treatment of the water liquid, so that the water liquid can be recycled. The hydroforming machine for ultra-thin oxygen-free copper tubes used in air conditioners can realize the purification and recycling of water liquid, reduce production costs, reduce water resource waste, and protect the environment.

[0023] As an implementation manner in this embodiment, as Figure 4 and Figure 5 shown, the filtering device includes a load-bearing plate 20 fixedly connected to the inner top side wall of the bottom frame 10. A filtering frame 21 is fixedly connected to the upper end surface of the load-bearing plate 20. One end of the filtering frame 21 penetrates the side wall of the bottom frame 10. Two socket openings 22 are arranged inside the filtering frame 21. Filtering plates 23 are inserted into the two socket openings 22. In the specific use process, during the working process, the water liquid first enters the water storage area inside the bottom frame 10 through the water passing holes 111. Under the action of gravity, the water liquid enters the filtering frame 21. Inside the filtering frame 21, the water liquid is gradually filtered by the filtering plates 23, and the impurities therein are effectively removed. Finally, the clean water liquid falls into the bottom frame 10 through the filtering frame 21. The filtering plates 23 can be quickly installed in the socket openings 22, which is convenient for replacement and cleaning.

[0024] As an implementation manner in this embodiment, as Figure 1 and Figure 4As shown in the figure, a water depth sensor 30 is fixedly installed at the top inside the bottom frame 10. The water depth sensor 30 is signal-connected to an external controller. A water inlet pipe 31 is fixedly inserted into the top of the bottom frame 10. During the specific use process, the water depth sensor 30 (which can adopt MS5803-30BA, and this water depth sensor is an existing technology) is mainly used to monitor the water level height of the liquid in the bottom frame 10 in real time. By accurately measuring the water level, it can ensure that there is sufficient and appropriate liquid in the hydro-expander during the processing, and at the same time prevent the equipment from being adversely affected by too high or too low water level. The water level information detected by the sensor can be transmitted to the external controller in real time, and the controller performs corresponding control operations according to the received signal, such as adjusting the water inflow, issuing an alarm, etc. And through the water inlet pipe 31, external water sources can be introduced into the bottom frame 10 to adjust the total amount of water in the bottom frame 10.

[0025] As an implementation method in this embodiment, as Figure 1 shown in the figure, a plurality of limiting slide rods 40 are arranged in an array on the upper end surface of the upper mold 18. The top ends of the limiting slide rods 40 vertically penetrate through the top plate 14 upward, and the limiting slide rods 40 are slidably connected to the top plate 14. During the specific use process, the movement trajectory of the upper mold 18 is limited by the arranged limiting slide rods 40 to prevent the upper mold 18 from shifting during the movement.

[0026] As an implementation method in this embodiment, as Figure 2 and Figure 3 shown in the figure, connecting plates 50 are fixedly connected to the outer walls on the opposite sides of the upper mold 18. Positioning plates 51 are fixedly connected to the lower end surfaces of the connecting plates 50. Positioning platforms 52 are fixedly connected to the outer walls on the opposite sides of the lower mold 12. Positioning openings 53 adapted to the positioning plates 51 are opened on the upper end surfaces of the two positioning platforms 52. During the specific use process, the positioning plate 51 is vertically inserted downward into the positioning opening 53 through the downward movement of the upper mold 18, so that the upper mold 18 and the lower mold 12 will not shift due to the influence of the water pressure impact force during the mold closing.

[0027] As an implementation method in this embodiment, as Figure 2 and Figure 3 shown in the figure, a plurality of upper mold cavities 181 are arranged in an array on the lower end surface of the upper mold 18, and a plurality of lower mold cavities 121 are arranged in an array on the upper end surface of the lower mold 12. A mold cavity for processing ultra-thin oxygen-free copper tubes is formed by the combination of the upper mold cavities 181 and the lower mold cavities 121.

[0028] As an implementation method in this embodiment, as Figure 1 shown in the figure, water guide pipes 60 are fixedly inserted into the opposite side walls of the bottom frame 10. The water guide pipes 60 are used to connect an external pressurized water supply device, and the external pressurized water supply device sucks the purified liquid in the bottom frame 10 to perform processing operations on the copper tubes.

[0029] Working principle: First, place the oxygen-free copper tube in the lower mold 12 and fix it. Then, start the cylinder 16 to lower the upper mold 18 to close with the lower mold 12 for hydroforming. After the processing is completed, the cylinder 16 drives the upper mold 18 to rise and reset to take out the finished product. At this time, the water liquid during hydroforming is blocked by the baffle 19 and concentrated on the support table 11, and then the water liquid is introduced into the bottom frame 10 through the water passing holes 111 provided. And when the water liquid falls, it will pass through the filtering operation of the filtering device to filter and separate the waste chips in the water liquid, completing the purification treatment of the water liquid. During the working process, the water liquid first enters the water storage area in the bottom frame 10 through the water holes 111. Under the action of gravity, the water liquid enters the filtering frame 21. In the filtering frame 21, the water liquid is gradually filtered by the filter plate 23, and the impurities therein are effectively removed. Finally, the clean water liquid falls into the bottom frame 10 through the filtering frame 21. The filter plate 23 can be quickly installed in the socket 22, which is convenient for replacement and cleaning.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it.

Claims

1. A water expansion machine for ultra-thin oxygen-free copper tubes for air conditioners, comprising a bottom frame (10), characterized in that: The upper end surface of the bottom frame (10) is fixedly connected to a support platform (11), a lower mold (12) is fixedly installed at the center of the upper end surface of the support platform (11), fixed columns (13) are fixedly connected to the four corners of the upper end surface of the support platform (11), the top ends of the four fixed columns (13) are fixedly connected to a top plate (14), a mounting frame (15) is fixedly installed on the top plate (14), a cylinder (16) is fixedly installed on the inner top wall of the mounting frame (15), a driving rod (17) is fixedly connected to the piston end of the cylinder (16), the bottom end of the driving rod (17) vertically penetrates the top plate (14) downward and an upper mold (18) is fixedly installed on the end, a baffle (19) is fixedly installed at the edge of the upper end surface of the support platform (11), a plurality of water holes (111) are arranged in an array on the support platform (11), and a filtering device for filtering impurities in water is arranged on the inner side of the bottom frame (10).

2. The water expansion machine for ultra-thin oxygen-free copper tubes for air conditioners according to claim 1, characterized in that: The filtering device comprises a load-bearing plate (20) fixedly connected to the inner top side wall of the bottom frame (10); a filter frame (21) is fixedly connected to the upper end surface of the load-bearing plate (20); one end of the filter frame (21) penetrates the side wall of the bottom frame (10); two sockets (22) are provided on the inner side of the filter frame (21); filter plates (23) are inserted into the inner sides of the two sockets (22).

3. The water expansion machine for ultra-thin oxygen-free copper tubes for air conditioners according to claim 1, characterized in that: A water depth sensor (30) is fixedly installed on the top of the bottom frame (10), the water depth sensor (30) is connected to an external controller signal, and a water inlet pipe (31) is fixedly inserted on the top of the bottom frame (10).

4. The water expansion machine for ultra-thin oxygen-free copper tubes for air conditioners according to claim 1, characterized in that: The upper end surface array of the upper mold (18) is provided with a limit slide bar (40), the top ends of the limit slide bars (40) vertically penetrate the top plate (14) upward, and the limit slide bars (40) are slidably connected to the top plate (14).

5. The water expansion machine for ultra-thin oxygen-free copper tubes for air conditioners according to claim 1, characterized in that: The upper mold (18) has connecting plates (50) fixedly connected to the outer walls on both sides opposite to each other, and the lower end surface of the connecting plate (50) is fixedly connected to a positioning plate (51). The lower mold (12) has positioning platforms (52) fixedly connected to the outer walls on both sides opposite to each other, and the upper end surfaces of the two positioning platforms (52) are both provided with positioning openings (53) adapted to the positioning plates (51).

6. The water expansion machine for ultra-thin oxygen-free copper tubes for air conditioners according to claim 1, characterized in that: The upper mold (18) has a plurality of upper mold cavities (181) arranged in an array on the lower end surface, and the lower mold (12) has a plurality of lower mold cavities (121) arranged in an array on the upper end surface.

7. The water expansion machine for ultra-thin oxygen-free copper tubes for air conditioners according to claim 1, characterized in that: Water pipes (60) are fixedly inserted on two opposite side walls of the bottom frame (10), and the water pipes (60) are used to connect to an external pressurized water supply device.

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