Single-top hydraulic machine for forming automobile air conditioner parts

Abstract

The invention relates to the field of hydraulic machines, and discloses a single-top hydraulic machine for forming automobile air conditioner parts, which comprises a mounting frame, the mounting frame is fixed on the top surface of a worktable, a hydraulic machine body is fixed on the left side of the mounting frame, and a movable mold is fixed at one end of an output shaft of the hydraulic machine body; a fixed mold is fixed to the right side of the inner wall of the mounting frame, a mold core is fixed to the movable mold and slidably connected into the fixed mold, a plurality of containing grooves are formed in the inner wall of the fixed mold, and a plurality of L-shaped grooves are formed in the inner wall of the fixed mold. In the invention, through the synergistic effect of the hydraulic machine body, the movable mold, the fixed mold, the mold core, a pressing column, an L-shaped block, a first sealing ring and a spring, the demolding operation of a formed part can be realized, so that the part can be separated from an inner cavity of the fixed mold without clamping stagnation, and the formed part is effectively prevented from being clamped in the fixed mold; and extra labor input and labor hour loss required by manual intervention stripping are avoided.

Description

Technical Field

[0001] This invention relates to the technical field of hydraulic presses, specifically a single-top hydraulic press for forming automotive air conditioning parts. Background Technology

[0002] A single-cylinder hydraulic press is a mechanical pressure device driven by a single hydraulic cylinder. It is mainly used in industrial fields such as metal forging, powder metallurgy, and plastic product molding. Its core structure consists of a machine body, a main hydraulic cylinder, a hydraulic pump station, and an electrical control system. It converts oil pressure into mechanical pressure through hydraulic transmission, achieving high-precision and high-stability processing. Single-cylinder hydraulic presses are used to manufacture small parts; they are required for processing automotive air conditioning components.

[0003] Chinese patent CN213002153U discloses a stamping die for automotive parts, comprising a base, guide pillars fixedly connected to both sides of the upper end of the base, an upper connecting seat fixedly connected to the upper ends of the two guide pillars, a central hydraulic press mounted on the lower center of the upper connecting seat, side hydraulic presses mounted on both sides of the lower end of the upper connecting seat, a movable plate connected to both side hydraulic presses, the movable plate being sleeved on the guide pillars at both ends, an upper die connected to the central hydraulic press, and a lower die mounted on the base, with a stamping groove corresponding to the upper die on the lower die.

[0004] In the above scheme, the hydraulic press drives the movable plate, pressure plate and buffer plate to press down, and flatten the sides of the sheet metal parts. The pressure plate and the movable plate work together to press the edges of the sheet metal parts, which leads to the following disadvantages: there is no demolding mechanism for the fixed mold cavity. After the parts are formed, they are easy to stick and jam to the inner wall of the fixed mold. They need to be peeled off manually by prying, knocking and other methods, which not only increases the additional labor cost, but also easily causes deformation and surface damage of the parts due to improper operation. Summary of the Invention

[0005] The purpose of this invention is to provide a single-top hydraulic press for molding automotive air conditioning parts, in order to solve the problem of the lack of a demolding mechanism for the fixed mold cavity, which makes the parts easily stick and jam to the inner wall of the fixed mold after molding, requiring manual peeling by prying, knocking and other methods. This not only increases additional labor costs, but also easily leads to deformation and surface damage of the parts due to improper operation.

[0006] To achieve the above-mentioned objectives, the present invention employs the following technical solution: a single-top hydraulic press for forming automotive air conditioning parts, comprising a mounting frame fixed to the top surface of a workbench, a hydraulic press body fixed to the left side of the mounting frame, a movable mold fixed to one end of the output shaft of the hydraulic press body, a fixed mold fixed to the right side of the inner wall of the mounting frame, a mold core fixed to the movable mold, the mold core being slidably connected within the fixed mold, a plurality of receiving grooves being formed on the inner wall of the fixed mold, a plurality of L-shaped grooves being formed on the inner wall of the fixed mold, the L-shaped grooves being connected to the receiving grooves, a pressing post being inserted into the inner wall of the receiving groove, an L-shaped block being fixed to the pressing post, the L-shaped block being slidably connected within the L-shaped groove, a first sealing ring being fixed to the pressing post, the first sealing ring being in contact with the inner wall of the receiving groove, a spring being connected to the pressing post, the other end of the spring being connected to the inner wall of the receiving groove.

[0007] Preferably, the mold core is provided with a plurality of connecting grooves, the connecting grooves are connected to the output end of an external gas supply device through connecting pipes, the connecting grooves extend into the fixed mold, the inner wall of the connecting grooves is provided with abutting posts, the outer wall of the abutting posts is fixed with a second sealing ring, and the second sealing ring is in contact with the connecting grooves.

[0008] Preferably, the inner wall of the fixed mold is provided with a fixing groove, a metal plate is fixed to the inner wall of the fixing groove, a connecting hole is provided on the top surface of the fixed mold, the connecting hole is connected to the fixing groove, a cooling plate is fixed to the inner wall of the connecting hole, and a conductive cavity is formed between the cooling plate and the metal plate.

[0009] Preferably, the fixed mold has a plurality of limiting grooves, and the moving mold has a plurality of limiting posts fixed thereon. The limiting posts are inserted into the limiting grooves, and the ends of the limiting posts have mounting grooves. A pressure sensor is connected to the inner wall of the mounting groove, and the pressure sensor is in contact with the inner wall of the limiting groove.

[0010] Preferably, the moving mold has a plurality of positioning grooves, and the fixed mold has a plurality of positioning pins fixed therein, the positioning pins being inserted into the positioning grooves.

[0011] Preferably, the top surface of the workbench is provided with a sliding groove, the inner wall of the sliding groove is fixed with a sliding column, the bottom surface of the moving mold is fixed with a sliding seat, the sliding seat is slidably connected to the outer wall of the sliding column, the top surface of the workbench is provided with two strip grooves, and the bottom surface of the moving mold is rotatably provided with a number of rollers, the rollers being in contact with the inner wall of the strip grooves.

[0012] Preferably, mounting holes are provided on both the front and rear sides of the mounting frame, and a transparent panel is fixed to the inner wall of the mounting hole.

[0013] Preferably, the inner wall of the mold core is embedded with a sealing gasket, and the sealing gasket is in contact with the support seat of the inner wall of the mold.

[0014] Compared with the prior art, the present invention has the following beneficial effects: I. Through the coordinated action of the hydraulic press body, moving mold, fixed mold, mold core, pressing column, L-shaped block, first sealing ring, and spring, the demolding operation of the molded parts can be realized. This allows the molded parts to be released from the internal cavity of the fixed mold without jamming, effectively preventing the molded parts from getting stuck inside the mold. This avoids the additional labor input and time loss required for manual peeling, providing a precise positioning basis for subsequent robotic arm pick-and-place operations, reducing waiting time and operational errors, and significantly improving the molding and processing efficiency of the parts. Through the coordinated action of the abutment column and the second sealing ring, the abutment column applies precise force along the axial direction of the connecting groove to the inner wall of the part, forming a uniform and continuous pushing force. This allows the part to be smoothly ejected from the mold core cavity, effectively preventing time loss and part damage risks caused by manual operation, simplifying the mold core demolding process, reducing auxiliary time for processing individual parts, laying the foundation for efficient robotic arm pick-and-place operations, further improving the overall molding and processing line's operational efficiency, and reducing labor and time costs in the production process. Second, the synergistic effect of the metal plate and the cooling plate allows for cooling of the parts during the forming process, effectively controlling the temperature of the fixed mold and preventing material overheating and deformation. This improves the dimensional accuracy and surface quality of the formed parts. Simultaneously, the uniform cooling of the metal plate facilitates smooth demolding of the formed parts. The synergistic effect of the limiting groove, limiting post, positioning groove, and positioning post provides precise guidance during the opening and closing of the moving mold, ensuring accurate relative positioning between the moving and fixed molds. This guarantees the dimensional accuracy of the formed parts and reduces the scrap rate caused by inaccurate positioning of the moving mold. Pressure sensors monitor the pressure during the closing of the moving mold in real time, allowing operators to adjust the operating parameters of the hydraulic press body promptly, ensuring the stability and reliability of the forming process and contributing to improved product consistency. Third, the coordinated action of the sliding column and sliding seat allows the moving mold to slide smoothly on the worktable, reducing frictional resistance. This, combined with the action of the rollers, further reduces friction during the movement of the moving mold, making its movement smoother and facilitating installation, adjustment, and replacement by operators, thus improving work efficiency. The transparent panel allows operators to clearly observe the part forming process without opening the mounting frame. This facilitates monitoring of the forming process and prevents operators from accidentally contacting dangerous parts during equipment operation, improving operational safety. The sealing gasket, in contact with the support seat on the inner wall of the fixed mold, further enhances the sealing between the mold core and the fixed mold, preventing material leakage during forming, ensuring the quality of the formed parts, and also helping to keep the inside of the fixed mold clean, reducing the impact of impurities on the forming process. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0016] Figure 2 This is a breakdown diagram of an embodiment.

[0017] Figure 3 This is a schematic diagram showing the disassembly of the L-shaped block and positioning post in an embodiment.

[0018] Figure 4 This is a cross-sectional schematic diagram of the abutment post and the limiting post in the embodiment.

[0019] Figure 5 This is a schematic diagram showing the disassembly of the abutment post in an embodiment.

[0020] Figure 6 For the example Figure 2 Enlarged diagram of point A in the middle.

[0021] Figure 7 For the example Figure 2 Enlarged diagram of point B in the middle.

[0022] In the diagram: 1. Mounting frame; 2. Workbench; 3. Hydraulic press body; 4. Moving mold; 5. Fixed mold; 6. Mold core; 7. Receiving groove; 8. L-shaped groove; 9. Pressing column; 10. L-shaped block; 11. First sealing ring; 12. Spring; 13. Connecting groove; 14. Abutting column; 15. Second sealing ring; 16. Fixing groove; 17. Metal plate; 18. Connecting hole; 19. Cooling plate; 20. Limiting groove; 21. Limiting column; 22. Mounting groove; 23. Pressure sensor; 24. Positioning groove; 25. Positioning column; 26. Sliding groove; 27. Sliding column; 28. Sliding seat; 29. ​​Strip groove; 30. Roller; 31. Mounting hole; 32. Transparent panel; 33. Sealing gasket. Detailed Implementation

[0023] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] like Figures 1-7 As shown, a single-top hydraulic press for forming automotive air conditioning parts includes a mounting frame 1, which is fixed to the top surface of a workbench 2. A hydraulic press body 3 is fixed to the left side of the mounting frame 1. A movable mold 4 is fixed to one end of the output shaft of the hydraulic press body 3. A fixed mold 5 is fixed to the right side of the inner wall of the mounting frame 1. A mold core 6 is fixed to the movable mold 4 and slidably connected within the fixed mold 5. The inner wall of the fixed mold 5 has several receiving grooves 7 and several L-shaped grooves 8 connected to the receiving grooves 7. A pressing column 9 is inserted into the inner wall of the receiving groove 7, and a pressing column 9 is fixed to the pressing column 9. L-shaped block 10 is slidably connected in L-shaped groove 8. A first sealing ring 11 is fixed on the pressing column 9 and contacts the inner wall of the receiving groove 7. A spring 12 is connected to the pressing column 9 and the other end of the spring 12 is connected to the inner wall of the receiving groove 7. Several connecting grooves 13 are opened on the mold core 6. The connecting grooves 13 are connected to the output end of the external gas transmission equipment through connecting pipes. The connecting grooves 13 extend into the fixed mold 5. An abutting column 14 is inserted into the inner wall of the connecting groove 13. A second sealing ring 15 is fixed on the outer wall of the abutting column 14 and contacts the connecting groove 13.

[0025] In use, when it is necessary to perform the molding operation of automotive air conditioning parts, the hydraulic press body 3 is started first. The hydraulic press body 3 outputs driving force to drive the moving mold 4 to move horizontally from left to right. During this process, the sliding seat 28 on the bottom surface of the moving mold 4 and the sliding column 27 in the sliding groove 26 of the worktable 2 form a sliding fit to achieve the smooth axial displacement of the moving mold 4. At the same time, the roller 30 on the bottom surface of the moving mold 4 rolls along the strip groove 29 to further reduce the moving friction resistance and ensure the displacement accuracy and stability of the moving mold 4. As the moving mold 4 continues to move to the right, the mold core 6 at its end gradually embeds into the cavity of the fixed mold 5. The outer wall of the mold core 6 forms a squeezing contact with the pressing column 9 on the inner wall of the fixed mold 5. Under the squeezing action, the pressing column 9 retracts axially along the receiving groove 7, simultaneously driving the L-shaped block 10 to slide along the L-shaped groove 8. During this process, the first sealing ring 11 always maintains a sealed fit with the inner wall of the receiving groove 7, which not only prevents external impurities from entering, but also compresses the air inside the receiving groove 7. Combined with the elastic compression of the spring 12, a double buffer structure is formed, which effectively weakens the impact load at the moment of closing of the moving mold 4, until the mold core 6 is completely embedded in the cavity of the fixed mold 5. The sealing gasket 33 embedded in the inner wall of the mold core 6 is tightly fitted with the support seat on the inner wall of the fixed mold 5. During the synchronous closing process of the moving mold 4, the limiting post 21 on the outer wall of the moving mold 4 is precisely inserted into the limiting groove 20 of the fixed mold 5. The pressure sensor 23 in the mounting groove 22 at the end of the limiting post 21 contacts the inner wall of the limiting groove 20, and collects the closing pressure data of the moving mold 4 in real time and feeds it back to the control system. The operator can dynamically adjust the output pressure, displacement speed and other working parameters of the hydraulic press body 3 according to the monitoring data of the pressure sensor 23 to ensure that the closing pressure is within the required range and avoid overpressure damage to the fixed mold 5 or underpressure leading to sealing failure.

[0026] Meanwhile, the positioning pin 25 on the outer wall of the fixed mold 5 and the positioning groove 24 of the moving mold 4 form a plug-in fit. Combined with the guiding effect of the limiting pin 21 and the limiting groove 20, a double positioning and guiding structure is formed to ensure that the moving mold 4 and the fixed mold 5 always maintain a precise relative position in the mold opening and closing cycle, and effectively control the deviation of the forming size of the parts. After the mold is closed and positioned, molding material (such as molten metal, polymer composite material, etc.) is injected into the molding cavity formed by the mold core 6 and the fixed mold 5 through the preset feed port. After the material completely fills the cavity, the cooling plate 19 in the fixed groove 16 of the fixed mold 5 is activated. The cooling plate 19 transfers the cold energy to the metal plate 17 through the conduction cavity. The metal plate 17 achieves uniform cooling of the cavity of the fixed mold 5, accurately controls the mold temperature during the molding process, avoids defects such as shrinkage deformation and surface cracking caused by overheating of the material, and ensures the molding quality and dimensional stability of the parts. After the parts have cooled and solidified in the molding cavity, the hydraulic press body 3 is started to run in reverse, driving the moving mold 4 to move horizontally from right to left, so that the moving mold 4 opens. As the mold core 6 is removed from the cavity of the fixed mold 5, its squeezing force on the pressing column 9 disappears, and the spring 12 in the receiving groove 7 releases its elastic potential energy. With the reset thrust of the compressed air, the pressing column 9 is driven to extend axially along the receiving groove 7, and the L-shaped block 10 is pushed to reset along the L-shaped groove 8. Through the pushing action of the L-shaped block 10 on the outer wall of the parts, the parts are separated from the inner wall of the fixed mold 5, and the initial demolding is completed. During the continuous leftward movement of the moving mold 4, the external air supply equipment is activated, and compressed air is introduced into the connecting groove 13 of the mold core 6 through the preset pipeline. Under the action of air pressure, the abutting column 14 in the connecting groove 13 overcomes the frictional resistance and moves axially from left to right. Its end contacts the inner wall of the part and applies a pushing force. With the sealing effect of the second sealing ring 15 on the airflow, the part is completely ejected from the cavity of the mold core 6, realizing secondary demolding and preventing the part from sticking to the mold core 6.

[0027] After demolding, the robotic arm system is activated. The robotic arm moves to the working area inside the mounting frame 1 according to the preset path. The negative pressure device at its end is activated and forms a negative pressure adsorption with the surface of the parts. After the parts are stably gripped, the robotic arm carries the parts to the transmission device and places the parts accurately on the transmission device to complete the part picking operation. This provides connection support for the subsequent trimming, inspection, assembly and other processes of the parts. Through the coordinated action of the hydraulic press body 3, moving mold 4, fixed mold 5, mold core 6, pressing column 9, L-shaped block 10, first sealing ring 11 and spring 12, the demolding operation of the molded parts can be realized, so that the molded parts can be released from the internal cavity of the fixed mold 5 without jamming. This effectively prevents the molded parts from getting stuck in the fixed mold 5, avoiding the extra labor input and time loss required for manual peeling, providing a precise positioning basis for subsequent robotic arm picking and placing operations, reducing waiting time and operation errors, and significantly improving the molding and processing efficiency of parts. Through the synergistic action of the abutment column 14 and the second sealing ring 15, the abutment column 14 applies precise force along the axial direction of the connecting groove 13 to the inner wall of the component, forming a uniform and continuous pushing force. This allows the component to be smoothly removed from the cavity of the mold core 6, effectively preventing the loss of time and the risk of component damage caused by manual operation. It simplifies the demolding process of the mold core 6, reduces the auxiliary time for processing individual components, lays the foundation for efficient component removal by the robotic arm, further improves the operating efficiency of the overall molding processing line, and reduces the labor and time costs in the production process.

[0028] like Figures 1-4 , Figure 6 and Figure 7 As shown, the fixed mold 5 has a fixing groove 16 on its inner wall, and a metal plate 17 is fixed to the inner wall of the fixing groove 16. The top surface of the fixed mold 5 has a connecting hole 18, which is connected to the fixing groove 16. A cooling plate 19 is fixed to the inner wall of the connecting hole 18, and a conduction cavity is formed between the cooling plate 19 and the metal plate 17. The fixed mold 5 has several limiting grooves 20, and the moving mold 4 has several limiting posts 21 fixed. The limiting posts 21 are inserted into the limiting grooves 20. The end of the limiting post 21 has an installation groove 22, and a pressure sensor 23 is connected to the inner wall of the installation groove 22. The pressure sensor 23 is in contact with the inner wall of the limiting groove 20. The moving mold 4 has several positioning grooves 24, and the fixed mold 5 has several positioning posts 25 fixed. The positioning posts 25 are inserted into the positioning grooves 24.

[0029] During use, the synergistic effect of the metal plate 17 and the cooling plate 19 allows for cooling of the parts during molding, effectively controlling the temperature of the fixed mold 5 and preventing overheating and deformation of the material. This improves the dimensional accuracy and surface quality of the molded parts. Simultaneously, the uniform cooling of the metal plate 17 facilitates smooth demolding of the molded parts. The synergistic effect of the limiting groove 20, limiting post 21, positioning groove 24, and positioning post 25 provides precise guidance during the opening and closing of the moving mold 4, ensuring accurate relative positioning between the moving mold 4 and the fixed mold 5. This guarantees the dimensional accuracy of the molded parts and reduces the scrap rate caused by inaccurate positioning of the moving mold 4. The pressure sensor 23 monitors the pressure of the moving mold 4 in real time during closing, allowing operators to adjust the operating parameters of the hydraulic press body 3 promptly, ensuring the stability and reliability of the molding process and improving product consistency.

[0030] like Figures 1-4 , Figure 6 and Figure 7 As shown, the top surface of the workbench 2 is provided with a sliding groove 26, and a sliding column 27 is fixed to the inner wall of the sliding groove 26. The bottom surface of the moving mold 4 is fixed with a sliding seat 28, which is slidably connected to the outer wall of the sliding column 27. The top surface of the workbench 2 is provided with two strip grooves 29. The bottom surface of the moving mold 4 is rotatably provided with several rollers 30, which are in contact with the inner wall of the strip grooves 29. The front and rear sides of the mounting frame 1 are provided with mounting holes 31, and a transparent panel 32 is fixed to the inner wall of the mounting hole 31. A sealing gasket 33 is embedded in the inner wall of the mold core 6, and the sealing gasket 33 is in contact with the support seat of the inner wall of the fixed mold 5.

[0031] During use, the sliding column 27 and the sliding seat 28 work together to allow the moving mold 4 to slide smoothly on the worktable 2, reducing frictional resistance. This, combined with the action of the roller 30, further reduces the frictional force during the movement of the moving mold 4, making its movement smoother and facilitating installation, adjustment, and replacement by operators, thus improving work efficiency. The transparent panel 32 allows operators to clearly observe the part forming process without opening the mounting frame 1, facilitating monitoring and preventing accidental contact with dangerous parts during equipment operation, thus improving operational safety. The sealing gasket 33, in contact with the support seat on the inner wall of the fixed mold 5, further enhances the sealing between the mold core 6 and the fixed mold 5, preventing material leakage during forming, ensuring the quality of the formed parts, and also helping to keep the inside of the fixed mold 5 clean, reducing the impact of impurities on the forming process.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A single-action hydraulic press for forming parts of an automobile air conditioner, comprising a mounting frame (1) fixed to the top surface of a table (2), characterized in that, The left side of the mounting frame (1) is fixed with a hydraulic machine body (3), one end of the output shaft of the hydraulic machine body (3) is fixed with a movable mold (4), the inner wall right side of the mounting frame (1) is fixed with a fixed mold (5), the movable mold (4) is fixed with a mold core (6), the mold core (6) is slidably connected in the fixed mold (5), a plurality of accommodating grooves (7) are formed in the inner wall of the fixed mold (5), a plurality of L-shaped grooves (8) are formed in the inner wall of the fixed mold (5), the L-shaped grooves (8) are communicated with the accommodating grooves (7), the press column (9) is inserted in the inner wall of the accommodating groove (7), the L-shaped block (10) is fixed on the press column (9), the L-shaped block (10) is slidably connected in the L-shaped groove (8), the first sealing ring (11) is fixed on the press column (9), the first sealing ring (11) is in contact with the inner wall of the accommodating groove (7), the spring (12) is connected to the press column (9), and the other end of the spring (12) is connected with the inner wall of the accommodating groove (7).

2. A single action hydraulic press for forming automobile air conditioning parts as claimed in claim 1, wherein: A plurality of connecting grooves (13) are formed in the mold core (6), the connecting grooves (13) are connected with the output end of the external gas conveying equipment through the connecting pipe, the connecting grooves (13) extend into the fixed mold (5), and the abutting column (14) is inserted in the inner wall of the connecting groove (13). The outer wall of the abutting column (14) is fixed with a second sealing ring (15), and the second sealing ring (15) is in contact with the connecting groove (13).

3. A single action hydraulic press for forming automobile air conditioning parts as claimed in claim 1 wherein: The inner wall of the fixed mold (5) is provided with a fixed groove (16), the inner wall of the fixed groove (16) is fixed with a metal plate (17), the top surface of the fixed mold (5) is provided with a connecting hole (18), the connecting hole (18) is communicated with the fixed groove (16), the inner wall of the connecting hole (18) is fixed with a refrigeration plate (19), and the refrigeration plate (19) and the metal plate (17) form a conduction cavity.

4. A single action hydraulic press for forming parts of an automotive air conditioner as defined in claim 3, wherein: A plurality of limiting grooves (20) are formed in the fixed mold (5), a plurality of limiting columns (21) are fixed on the movable mold (4), the limiting columns (21) are inserted into the limiting grooves (20), and the end of the limiting column (21) is provided with a mounting groove (22). The inner wall of the mounting groove (22) is connected with a pressure sensor (23), and the pressure sensor (23) is in contact with the inner wall of the limiting groove (20).

5. A single action hydraulic press for forming parts of an automotive air conditioner as defined in claim 4, wherein: A plurality of positioning grooves (24) are formed in the movable mold (4), and a plurality of positioning columns (25) are fixed on the fixed mold (5). The positioning column (25) is inserted into the positioning groove (24).

6. A single action hydraulic press for forming parts of an automotive air conditioner as defined in claim 5, wherein: The top surface of the workbench (2) is provided with a sliding groove (26), the inner wall of the sliding groove (26) is fixed with a sliding column (27), the bottom surface of the movable mold (4) is fixed with a sliding seat (28), the sliding seat (28) is slidably connected to the outer wall of the sliding column (27), the top surface of the workbench (2) is provided with two strip-shaped grooves (29), and the bottom surface of the movable mold (4) is rotatably provided with a plurality of rollers (30). The roller (30) is in contact with the inner wall of the strip-shaped groove (29).

7. A single action hydraulic press for forming automobile air conditioning parts as claimed in claim 1, wherein: The front side and the rear side of the mounting frame (1) are provided with mounting holes (31), and the inner wall of the mounting hole (31) is fixed with a transparent panel (32).

8. A single action hydraulic press for forming automobile air conditioning parts as claimed in claim 5 wherein: The inner wall of the mold core (6) is embedded with a sealing gasket (33), and the sealing gasket (33) is in contact with the supporting seat of the inner wall of the fixed mold (5).

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