Automobile air conditioner pipe end chuck forming die

Abstract

This utility model relates to a forming mold for an automotive air conditioning pipe end clamp, aiming to solve the technical problem that the current air conditioning pipe lacks effective fixing measures during processing, leaving the air conditioning pipe in an unconstrained state, which easily leads to displacement, making it difficult to meet the processing accuracy and seriously affecting product quality and production efficiency. The mold includes: a mold body assembly, composed of an upper mold and a lower mold, with matching mold grooves on the opposite end faces of the upper and lower molds, and mold heads for forming complementary clamps within the mold grooves; and a fixing mechanism for precise positioning and clamping of the air conditioning pipe to be processed, the fixing mechanism including: a baffle, located on one side of the lower mold, with a positioning post fixedly connected to the end of the baffle near the mold groove. This utility model provides axial fixing and radial constraint of the pipe, avoiding radial displacement caused by mold pressure during processing, achieving dual "axial and radial" positioning, and improving forming accuracy.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning pipe end clamp processing technology, specifically a molding die for an automotive air conditioning pipe end clamp. Background Technology

[0002] An automotive air conditioning system is a device that cools, heats, ventilates, and purifies the air inside a vehicle. It provides a comfortable riding environment for passengers, reduces driver fatigue, and improves driving safety. The automotive air conditioning system mainly consists of four major components: a compressor, condenser, evaporator, and expansion valve, as well as connecting pipes and some accessories. The air conditioning pipes, as the connecting components of the entire system, serve to connect the four major components, and the ends of the air conditioning pipes are usually formed using molds.

[0003] Traditional air conditioning pipes lack effective fixing measures during processing, leaving them unrestrained and prone to displacement. This makes it difficult to achieve the required processing precision, severely impacting product quality and production efficiency. Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a molding die for forming the end clamp of an automotive air conditioning pipe. This solves the technical problem that the air conditioning pipe lacks effective fixing measures during the current processing, leaving it in an unrestrained state and prone to displacement, which in turn makes it difficult to meet the processing accuracy of the air conditioning pipe and seriously affects product quality and production efficiency.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: A molding die for forming an automotive air conditioning pipe end clamp is designed, comprising:

[0006] The mold body assembly consists of an upper mold and a lower mold. The upper mold and the lower mold have matching mold grooves on their opposite end faces. Mold heads for forming chucks are provided in the mold grooves.

[0007] A fixing mechanism for precisely positioning and clamping the air conditioning pipe to be processed, the fixing mechanism comprising:

[0008] A baffle is provided on one side of the lower mold. A positioning post is fixedly connected to one end of the baffle near the mold groove. The positioning post is adapted to the pre-formed hole at the end of the air conditioning pipe.

[0009] A fixed plate is fixed to the end of the lower mold away from the baffle. The fixed plate is connected to a movable connecting plate through a horizontal adjustment mechanism. A tapered positioning cylinder is provided at the end of the connecting plate facing the mold groove.

[0010] Preferably, the leveling mechanism includes a groove formed on the surface of the fixed plate, the inner cavity of the groove is rotatably connected to a lead screw via a bearing, and one end of the lead screw is rotatably inserted through the outer side of the fixed plate. A slider is slidably connected in the groove, and the slider is threaded onto the outer side of the lead screw. The bottom of the connecting plate is fixedly connected to the surface of the slider.

[0011] Preferably, a screw rod passes through the connecting plate, and the screw rod is threadedly connected to the connecting plate, with one end of the screw rod near the conical positioning cylinder being fixedly connected to it.

[0012] Preferably, a fixing bolt passes through both the upper mold and the lower mold, and the fixing bolt is threaded to the surface of the mold head. A bolt passes through the lower side of the end of the baffle away from the positioning post, and the bolt is threaded to the surface of the lower mold.

[0013] Preferably, a base plate is fixedly connected to the bottom of the lower mold, and a gantry frame is fixedly connected between the two sides of the base plate near the lower mold. An electric hydraulic cylinder is fixedly connected to the top of the gantry frame, and the telescopic end of the electric hydraulic cylinder is connected to the middle of the surface of the upper mold.

[0014] Preferably, the lower mold has four limit holes at the four corners of the end near the upper mold, and each of the four limit holes has a limit rod slidably connected to it. One end of each of the four limit rods is fixedly connected to the end of the upper mold near the lower mold, and the external dimensions of the limit rods are adapted to the internal dimensions of the limit holes.

[0015] Preferably, the axis of the conical positioning cylinder, the axis of the mold head, the axis of the mold groove, and the axis of the positioning column coincide.

[0016] Preferably, telescopic bellows are sleeved on the outer sides of the lead screws on both sides of the slider, and the two ends of the telescopic bellows are fixedly connected to the inner cavity of the slide groove and the end face of the slider, respectively.

[0017] Preferably, a chip removal hole is provided at the middle of the bottom end of the inner cavity of the slide groove, and the width of the chip removal hole is smaller than the width of the slider.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. Precise axial positioning: The positioning post is adapted to the pre-formed hole at the end of the air conditioning pipe. The pipe is axially fixed through the hole-shaft fit, which solves the problem of "axial displacement caused by lack of constraint" in traditional processing and ensures the stability of the end position when the chuck is formed.

[0020] 2. Radial clamping reinforcement: The tapered positioning cylinder cooperates with the movable connecting plate to form a radial constraint on the end of the pipe to be processed, avoiding radial displacement caused by mold pressure during processing, realizing dual positioning of "axial and radial", and improving forming accuracy.

[0021] 3. Versatile design: The adjustable structure of the movable connecting plate is compatible with air conditioning pipes of different lengths or end sizes, eliminating the need to replace the entire tooling, reducing downtime for adjustment due to specification changes, and improving production efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of one side of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure on the other side of this utility model;

[0024] Figure 3 This is a schematic diagram of the connection structure between the lower mold and the fixing mechanism of this utility model;

[0025] Figure 4 This is a sectional front view of the connection between the fixing plate and the lead screw of this utility model.

[0026] In the diagram: 1. Lower mold; 11. Upper mold; 12. Mold groove; 13. Mold head; 14. Fixing bolt; 2. Baffle; 21. Bolt; 22. Positioning pin; 3. Base plate; 31. Gantry frame; 32. Electric hydraulic cylinder; 4. Fixing plate; 41. Slider; 42. Lead screw; 43. Slide groove; 44. Connecting plate; 45. Screw; 46. Conical positioning cylinder; 47. Chip removal hole; 48. Telescopic bellows; 5. Limiting hole; 51. Limiting rod. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] Example 1: A molding die for forming automotive air conditioning pipe end clamps, see [link / reference] Figures 1 to 4 ,include:

[0029] The mold body assembly consists of an upper mold 11 and a lower mold 1. The upper mold 11 and the lower mold 1 have matching mold grooves 12 on their opposite end faces. A mold head 13 for forming a complementary clamp is provided in the mold groove 12.

[0030] A fixing mechanism for precisely positioning and clamping the air conditioning pipe to be processed, the fixing mechanism comprising:

[0031] A baffle 2 is provided on one side of the lower mold 1. A positioning post 22 is fixedly connected to one end of the baffle 2 near the mold groove 12. The positioning post 22 is adapted to the pre-formed hole at the end of the air conditioning pipe.

[0032] A fixing plate 4 is fixed to the end of the lower mold 1 away from the baffle 2. The fixing plate 4 is connected to a movable connecting plate 44 through a horizontal adjustment mechanism. A conical positioning cylinder 46 is provided at the end of the connecting plate 44 facing the mold groove 12. Rubber protective pads are installed on the outside of the positioning column 22 and the conical positioning cylinder 46.

[0033] This device, through its fixed mechanism, achieves the following during use:

[0034] Axial precision positioning: The positioning post 22 is adapted to the pre-formed hole at the end of the air conditioning pipe. The pipe is axially fixed through the hole-shaft fit, which solves the problem of "axial displacement caused by lack of constraint" in traditional processing and ensures the stability of the end position when the chuck is formed.

[0035] Radial clamping reinforcement: The tapered positioning cylinder 46 cooperates with the movable connecting plate 44 to form a radial constraint on the end of the pipe to be processed, avoiding radial displacement caused by mold pressure during processing, realizing dual positioning of "axial and radial", and improving forming accuracy.

[0036] Versatile design: The adjustable structure of the movable connecting plate 44 is compatible with air conditioning pipes of different lengths or end sizes, eliminating the need to replace the entire tooling, reducing downtime for adjustment due to specification changes, and improving production efficiency.

[0037] For details, see Figure 2 The horizontal adjustment mechanism includes a groove 43 formed on the surface of the fixed plate 4. The inner cavity of the groove 43 is rotatably connected to a lead screw 42 via a bearing, and one end of the lead screw 42 is rotatably inserted through the outer side of the fixed plate 4. A slider 41 is slidably connected inside the groove 43, and the slider 41 is threaded onto the outer side of the lead screw 42. The bottom of the connecting plate 44 is fixedly connected to the surface of the slider 41. The slider 41 is driven to move linearly by the rotation of the lead screw 42, thereby realizing stepless adjustment of the position of the movable connecting plate 44 to meet the positioning requirements of air conditioning pipes of different lengths. One end of the lead screw 42 extends to the outer side of the fixed plate 4, supporting manual or automated drive (such as connecting a servo motor), adapting to the needs of manual debugging and automated production lines.

[0038] Further, see Figure 2 A screw 45 passes through the connecting plate 44 and is threadedly connected to the connecting plate 44. The end of the screw 45 near the conical positioning cylinder 46 is fixedly connected to it. Through the threaded engagement between the screw 45 and the connecting plate 44, the conical positioning cylinder 46 is allowed to move slightly along the axial direction. This can compensate for minor deviations in the pre-formed holes at the end of the pipe fitting, ensuring that the positioning cylinder fits tightly against the inner wall of the pipe fitting and avoiding loosening of the clamping due to the fit clearance.

[0039] It is worth noting that, see Figure 1A fixing bolt 14 passes through both the upper mold 11 and the lower mold 1, and the fixing bolt 14 is threadedly connected to the surface of the mold head 13. A bolt 21 passes through the lower side of the end of the baffle 2 away from the positioning post 22, and the bolt 21 is threadedly connected to the surface of the lower mold 1. Through the self-adjustment of the fixing bolt 14 and the bolt 21, it is convenient to replace or adjust the mold head 13 and the positioning post 22 individually, adapt to the mold switching of different chuck models, reduce downtime caused by overall disassembly, and improve the maintenance efficiency of the production line.

[0040] It is worth noting that, see Figure 1 The bottom of the lower mold 1 is fixedly connected to a base plate 3. A gantry frame 31 is fixedly connected between the two sides of the base plate 3 near the lower mold 1. An electric hydraulic cylinder 32 is fixedly connected to the top of the gantry frame 31. The telescopic end of the electric hydraulic cylinder 32 is connected to the middle of the surface of the upper mold 11. The mold closing pressure can be adjusted by the electric hydraulic cylinder 32 to adapt to the molding requirements of different materials (such as aluminum tubes and copper tubes) and prevent the deformation of the pipe fittings or the lack of material in the clamps due to uneven pressure.

[0041] It is worth mentioning that, see Figure 2 and Figure 3 The lower mold 1 has four limit holes 5 at the four corners of the end near the upper mold 11. Each of the four limit holes 5 is slidably connected to a limit rod 51. One end of each of the four limit rods 51 is fixedly connected to the end of the upper mold 11 near the lower mold 1. The external dimensions of the limit rods 51 are adapted to the internal dimensions of the limit holes 5. Through the precise fit between the limit rods 51 and the limit holes 5, four-way positioning guidance is provided for the mold closing process, improving the accuracy of the mold closing between the upper mold 11 and the lower mold 1, and further improving the quality of the air conditioning pipe section clamp forming.

[0042] It is worth mentioning that, see Figure 1 and Figure 2 The axis of the conical positioning cylinder 46, the axis of the die head 13, the axis of the die groove 12 and the axis of the positioning column 22 are coincident, ensuring that the end of the air conditioning pipe to be processed is always in the center position of the mold during the forming process, eliminating the uneven radial force caused by eccentricity, fundamentally avoiding defects such as uneven wall thickness of the clamp and skewed ends, and ensuring the assembly accuracy of the clamp and the pipe.

[0043] It is worth mentioning that, see Figure 4The outer sides of the lead screws 42 on both sides of the slider 41 are fitted with telescopic bellows 48. The two ends of the telescopic bellows 48 are fixedly connected to the inner cavity of the slide groove 43 and the end face of the slider 41, respectively. The telescopic bellows 48 expand and contract synchronously with the slider 41, forming a full-stroke sealed protection for the lead screw 42. This prevents metal shavings, oil stains and other contaminants generated during the processing from entering the threaded pair of the lead screw 42, avoids the slider 41 from moving poorly or the lead screw 42 from wearing due to foreign objects, and ensures that the horizontal adjustment mechanism maintains high-precision transmission performance for a long time.

[0044] It is worth mentioning that, see Figure 4 The inner cavity of the slide groove 43 has a chip removal hole 47 at the middle of its bottom. The width of the chip removal hole 47 is smaller than the width of the slider 41. By setting the chip removal hole 47, the chips that fall during the processing can be discharged from the slide groove 43 in time through the chip removal hole 47, avoiding the accumulation of chips that affect the smooth sliding of the slider 41. This ensures that the horizontal adjustment mechanism is always in a state free from impurities. The width of the chip removal hole 47 is smaller than the width of the slider 41 to prevent the slider 41 from blocking the chip removal channel when it moves, ensuring continuous chip removal. At the same time, it avoids the slider 41's support strength from decreasing due to the chip removal hole 47 being too large. This achieves efficient chip removal while maintaining the structural rigidity of the slide groove 43.

[0045] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0046] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A molding die for forming automotive air conditioning pipe end clamps, characterized in that, include: The mold body assembly consists of an upper mold (11) and a lower mold (1). The upper mold (11) and the lower mold (1) have matching mold grooves (12) on their opposite end faces. A mold head (13) for forming chucks to complement each other is provided in the mold groove (12). A fixing mechanism for precisely positioning and clamping the air conditioning pipe to be processed, the fixing mechanism comprising: A baffle (2) is provided on one side of the lower mold (1). A positioning post (22) is fixedly connected to one end of the baffle (2) near the mold groove (12). The positioning post (22) is adapted to the pre-formed hole at the end of the air conditioning pipe. A fixing plate (4) is fixed to the end of the lower mold (1) away from the baffle (2). The fixing plate (4) is connected to a movable connecting plate (44) through a horizontal adjustment mechanism. A conical positioning cylinder (46) is provided at the end of the connecting plate (44) facing the mold groove (12).

2. The automotive air conditioning pipe end clamp forming mold as described in claim 1, characterized in that, The horizontal adjustment mechanism includes a groove (43) formed on the surface of the fixed plate (4). The inner cavity of the groove (43) is rotatably connected to a lead screw (42) via a bearing. One end of the lead screw (42) is rotatably inserted through the outside of the fixed plate (4). A slider (41) is slidably connected inside the groove (43). The slider (41) is threaded onto the outside of the lead screw (42). The bottom of the connecting plate (44) is fixedly connected to the surface of the slider (41).

3. The automotive air conditioning pipe end clamp forming mold as described in claim 1, characterized in that, A screw (45) passes through the connecting plate (44), and the screw (45) is threadedly connected to the connecting plate (44), and the end of the screw (45) near the conical positioning cylinder (46) is fixedly connected to it.

4. The automotive air conditioning pipe end clamp forming mold as described in claim 1, characterized in that, A fixing bolt (14) is inserted above the upper mold (11) and below the lower mold (1), and the fixing bolt (14) is threaded to the surface of the mold head (13). A bolt (21) is inserted on the lower side of the end of the baffle (2) away from the positioning post (22), and the bolt (21) is threaded to the surface of the lower mold (1).

5. The automotive air conditioning pipe end clamp forming mold as described in claim 1, characterized in that, The bottom of the lower mold (1) is fixedly connected to a base plate (3), and a gantry frame (31) is fixedly connected between the two sides of the base plate (3) near the lower mold (1). An electric hydraulic cylinder (32) is fixedly connected to the top of the gantry frame (31), and the telescopic end of the electric hydraulic cylinder (32) is connected to the middle of the surface of the upper mold (11).

6. The automotive air conditioning pipe end clamp forming mold as described in claim 1, characterized in that, Limiting holes (5) are provided at the four corners of the lower mold (1) near the upper mold (11). Limiting rods (51) are slidably connected in the four limiting holes (5). One end of each of the four limiting rods (51) is fixedly connected to the end of the upper mold (11) near the lower mold (1). The external dimensions of the limiting rods (51) are adapted to the internal dimensions of the limiting holes (5).

7. The automotive air conditioning pipe end clamp forming mold as described in claim 1, characterized in that, The axis of the conical positioning cylinder (46), the axis of the mold head (13), the axis of the mold groove (12), and the axis of the positioning column (22) coincide.

8. The automotive air conditioning pipe end clamp forming mold as described in claim 2, characterized in that, The outer sides of the lead screws (42) on both sides of the slider (41) are fitted with telescopic bellows (48), and the two ends of the telescopic bellows (48) are fixedly connected to the inner cavity of the slide groove (43) and the end face of the slider (41), respectively.

9. The automotive air conditioning pipe end clamp forming mold as described in claim 2, characterized in that, The inner cavity of the slide (43) has a chip removal hole (47) at the middle of the bottom, and the width of the chip removal hole (47) is smaller than the width of the slider (41).

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