A multi-stage vacuum forming mold
By using components such as the rotating seat, heat-absorbing jacket, and condensation pipe of the multi-stage vacuum shaping mold, uniform cooling and shaping of high-thermal-determined nano-modified CPVC pipes is achieved, solving the problem of insufficient mold cooling and improving the shaping accuracy of the pipes and the applicability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUAYA IND PLASTICS (TAICANG) CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-05-29
AI Technical Summary
In the existing technology, during the production process of high-temperature fixed nano-modified CPVC pipe, insufficient cooling and shaping of the mold leads to temperature differences, affecting the shape and quality of the pipe and causing material waste.
The multi-stage vacuum forming mold, including components such as a rotating seat, heat absorption jacket, condensation pipe and heat conduction strip, is adopted. Through rotation and uniform cooling, it ensures uniform cooling of all parts of the pipe mold. Combined with detachable auxiliary components, it can be adapted to different vacuum equipment to achieve all-round uniform cooling and forming.
It improves the shaping accuracy and quality of pipes, reduces deformation and dimensional errors, enhances the versatility and flexibility of the equipment, and is suitable for various vacuum shaping processes.
Smart Images

Figure CN224296298U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shaping molds, and in particular to a multi-stage vacuum shaping mold. Background Technology
[0002] In the field of materials science, high-temperature annealed nano-modified CPVC pipe, as a novel high-performance pipe material, is gradually replacing traditional pipe materials due to its excellent heat resistance, corrosion resistance, high strength, and superior processing performance, especially showing great application potential in high-end application fields such as chemical, medical, and automotive manufacturing industries. However, the production process of this high-performance pipe places extremely high demands on the molds, especially the shaping and cooling processes, which directly affect the final quality and performance of the pipe.
[0003] A search revealed Chinese Patent Publication No. CN211165319U, which discloses a vacuum forming mold for heat shrink tubing. The mold includes a water-cooled connecting column device and a vacuum suction groove. Externally threaded sleeve connectors are fitted onto the inner positions of the upper front left and right sides and the rear left and right sides of the water-cooled connecting column device. A fixed connecting plate device is fitted onto the upper outer wall of the water-cooled connecting column device, making the entire device detachable. Multiple hollow extrusion tubes of different specifications are provided. When forming heat shrink tubing to different specifications, workers can easily replace the corresponding specifications of hollow extrusion tubes by disassembling the hollow extrusion tubes and the fixed connecting plate device, while other devices can continue to be used. Furthermore, the hollow extrusion tubes of corresponding specifications can be used to form the heat shrink tubing, ensuring it reaches the specified specifications, thus reducing production costs.
[0004] The above-mentioned device has the following defects: when cooling and shaping the pipe mold, due to the fixed setting of the condensing equipment, there is a temperature difference between the top and bottom of the pipe mold, resulting in insufficient condensation of the pipe mold. This leads to defects in the shape of the finished mold after shaping, causing unnecessary material waste and reducing the shaping effect of the mold. Therefore, a multi-stage vacuum shaping mold is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a multi-stage vacuum forming mold, which aims to improve the problem of insufficient mold cooling and forming in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-stage vacuum shaping mold, comprising a processing box, an observation door detachably connected to the front surface of the processing box, a refrigeration unit fixedly installed on the right surface of the processing box, a motor fixedly installed on the right end of the upper surface of the processing box, a shaping component arranged inside the processing box, an auxiliary component arranged on the top of the shaping component, the shaping component comprising a rotating seat, a heat-absorbing sleeve fixedly connected to the upper surface of the rotating seat, multiple sets of evenly distributed heat-conducting strips fixedly installed on the outer wall of the heat-absorbing sleeve, a condensing pipe fixedly installed inside the heat-absorbing sleeve, a condensing auxiliary pipe arranged on the right side of the condensing pipe, the right inlet end and outlet end of the condensing pipe being fixedly connected to the upper and lower ends of the condensing auxiliary pipe respectively via connectors, a circulating water pump fixedly connected to the outside of the condensing auxiliary pipe, and a pipe mold fixedly connected to the left end of the upper surface of the processing box.
[0007] As a further description of the above technical solution: the auxiliary component includes a support ring plate, the top of the support ring plate is provided with a threaded groove, the outer wall of the threaded groove is detachably connected to an auxiliary cover, and the inner wall of the auxiliary cover is detachably connected to a suction head.
[0008] As a further description of the above technical solution: the outer wall of the pipe mold is in contact with the outer surface of the condensation pipe.
[0009] As a further description of the above technical solution: the bottom output shaft of the motor passes through the processing box, a rotating column is fixedly connected to the bottom output shaft of the motor, a drive gear is fixedly connected to the bottom of the rotating column, and the bottom surface of the drive gear is rotatably connected to the inner bottom surface of the processing box.
[0010] As a further description of the above technical solution: the gear edge of the driving gear meshes with the teeth of the outer wall of the rotating seat.
[0011] As a further description of the above technical solution: the interior of the heat-absorbing sleeve is configured as a hollow structure.
[0012] As a further description of the above technical solution: the rotary seat is rotatably connected to the bottom of the inner wall of the processing box.
[0013] As a further description of the above technical solution: the support ring plate is fixedly installed on the top of the pipe mold.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, by utilizing the mutual cooperation between the heat-absorbing sleeve, rotating seat, condensing pipe and other components in the shaping assembly, the various parts of the pipe mold are evenly contacted with the condensing pipe. With the help of the heat-conducting strip and the condensing sub-pipe, the pipe mold is cooled uniformly in all directions, ensuring that the cooling of all parts of the product is consistent, improving the shaping accuracy and quality, and reducing problems such as product deformation and dimensional errors caused by uneven cooling.
[0016] 2. In this utility model, by utilizing the mutual cooperation between the suction head, auxiliary cover, pipe mold and other components in the auxiliary components, the adaptability range of the pipe mold to the vacuum equipment is expanded, making the mold suitable for different types of vacuum shaping process requirements, enhancing the versatility and flexibility of the equipment, and improving the applicability and practicality of the equipment. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the main body of a multi-stage vacuum forming mold proposed in this utility model.
[0018] Figure 2 This is a schematic diagram of the internal area of the processing box of a multi-stage vacuum forming mold proposed in this utility model;
[0019] Figure 3 This is a schematic diagram of the explosion of a local part of the heat-absorbing sleeve of a multi-stage vacuum forming mold proposed in this utility model.
[0020] Figure 4 This is an exploded view of a partial area of the auxiliary cover of a multi-stage vacuum forming mold proposed in this utility model.
[0021] Legend:
[0022] 1. Processing box; 2. Observation door; 3. Refrigeration unit; 4. Motor; 5. Auxiliary components; 51. Auxiliary cover; 52. Support ring plate; 53. Threaded groove; 54. Suction cover head; 6. Shaping component; 61. Pipe mold; 62. Rotary seat; 63. Drive gear; 64. Rotating column; 65. Heat absorption jacket; 66. Condensation pipe; 67. Condensation auxiliary pipe; 68. Connector; 69. Heat conduction strip; 610. Circulating water pump. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Reference Figures 1-2 This utility model provides an embodiment of a multi-stage vacuum forming mold, including a processing box 1. The processing box 1 is the core component of the entire multi-stage vacuum forming mold, providing a closed and stable spatial environment for the installation and operation of various internal parts, ensuring that the forming process is carried out in a relatively independent and controllable area, preventing interference from external factors. The front surface of the processing box 1 is detachably connected to an observation door 2. The observation door 2 allows operators to observe the operating status of the forming component 6 inside the processing box 1 and the forming status of the pipe mold 61 at any time, so as to promptly detect and deal with potential problems. A refrigeration unit 3 is fixedly installed on the right surface of the processing box 1, which provides a cold source for the entire forming system. A motor 4 is fixedly installed on the right end of the upper surface of the processing box 1. The motor 4 is the power source for driving the rotating column 64 and the connected drive gear 63 to rotate. The processing box 1 contains a forming component 6, and an auxiliary component 5 is installed on the top of the forming component 6.
[0025] Reference Figures 1-3 The shaping component 6 includes a rotating base 62, which is rotatably connected to the bottom of the inner wall of the processing box 1. The rotating base 62 serves to support and transmit rotational power. After the heat-absorbing sleeve 65 and other components are installed on it, it can drive the entire heat-absorbing sleeve 65 and the pipe mold 61 to rotate around a certain axis through meshing transmission with the drive gear 63. This ensures that during the cooling and shaping process, all parts of the pipe mold 61 can be evenly contacted with the cooling components such as the condensing pipe 66, ensuring the shaping quality. The heat-absorbing sleeve 65 is fixedly connected to the upper surface of the rotating base 62. The interior of the heat-absorbing sleeve 65 is designed with a hollow structure. The heat-absorbing sleeve 65 effectively increases the heat exchange area with the surrounding environment and other components in the processing box 1. During the rotation, the heat-absorbing sleeve 65 quickly absorbs and transfers the heat generated during the shaping of the pipe mold 61 through the condensing pipe 66 in its hollow structure and the external heat-conducting strip 69, achieving a good cooling effect and facilitating the timely cooling and shaping of the pipe mold 61.
[0026] Reference Figures 1-3The bottom output shaft of motor 4 passes through the processing box 1. A rotating column 64 is fixedly connected to the bottom output shaft of motor 4. A drive gear 63 is fixedly connected to the bottom of the rotating column 64. The bottom surface of the drive gear 63 is rotatably connected to the inner bottom surface of the processing box 1. The gear edge of the drive gear 63 meshes with the teeth of the outer wall of the rotating seat 62. Multiple sets of evenly distributed heat-conducting strips 69 are fixedly installed on the outer wall of the heat-absorbing jacket 65. A condensing pipe 66 is fixedly installed inside the heat-absorbing jacket 65. A condensing auxiliary pipe 67 is provided on the right side of the condensing pipe 66. The inlet and outlet ends of the right side of the condensing pipe 66 are fixedly connected to the upper and lower ends of the condensing auxiliary pipe 67 respectively through connectors 68. A circulating water pump 610 is fixedly connected to the outside of the condensing auxiliary pipe 67. When the refrigerant flows through the condensing pipe 66, the condensate in the condensing pipe 66 exchanges heat with the outer wall of the pipe mold 61, thereby reducing the temperature of the outer wall of the pipe mold 61. The condensate after heat exchange flows through the pipe to the condensing auxiliary pipe 67 and is then condensed in the processing box 1. The gas undergoes secondary heat exchange with the condensate in the condenser sub-pipe 67, forming a closed condensate circulation loop in the condenser pipe 66 and the condenser sub-pipe 67. This achieves the cooling and shaping effect on the pipe mold 61. The detachable connection facilitates maintenance, replacement, or adjustment of the connection layout of the condenser pipe 66 and the condenser sub-pipe 67. The condenser sub-pipe 67 further expands the coverage and cooling capacity of the condensation system, allowing the cooling energy to be more evenly distributed around the heat absorption jacket 65 and the pipe mold 61, thereby improving the cooling and shaping effect of the entire shaping component 6. The pipe mold 61 is fixedly connected to the left end of the upper surface of the processing box 1. The outer wall of the pipe mold 61 is in contact with the outer surface of the condenser pipe 66. The pipe mold 61 is the main component that carries the material to be shaped. Through close contact with the condenser pipe 66 and other cooling components, it transfers the heat generated during processing to the refrigerant in the condenser pipe 66, achieving rapid cooling and shaping, and ensuring the shape and dimensional accuracy of the pipe product.
[0027] Reference Figures 2-4The auxiliary component 5 includes a support ring plate 52, which is fixedly installed on the top of the pipe mold 61. The support ring plate 52 supports and positions the auxiliary cover 51 and other components connected above, ensuring that the auxiliary cover 51 can be stably installed in the corresponding position of the pipe mold 61. It also ensures a tight connection and structural stability between the entire auxiliary component 5 and the pipe mold 61, providing a reliable foundation for subsequent shaping operations. The top of the support ring plate 52 has a threaded groove 53. The threaded connection not only provides a secure connection but also facilitates quick disassembly and assembly of the auxiliary cover 51 by operators. This allows for easy cleaning, maintenance, or adjustment of the inside of the pipe mold 61. The auxiliary cover 51 can be easily removed, making operation convenient and flexible. The outer wall of the threaded groove 53 is detachably connected to the auxiliary cover 51, which plays a role in sealing and protection, preventing external impurities from entering the pipe mold 61 and affecting the shaping quality. In addition, it can help the pipe mold 61 maintain a stable internal pressure environment during the shaping process, which is beneficial to product shaping. The inner wall of the auxiliary cover 51 is detachably connected to the suction head 54. The suction head 54 forms a vacuum environment inside the pipe mold 61 through its own holes and grooves in conjunction with external equipment. By replacing the appropriate suction head 54, it is possible to connect to different external vacuum equipment, thereby improving the compatibility range of the pipe mold 61 with vacuum equipment.
[0028] Working principle: The refrigeration unit 3 starts and runs continuously, providing a stable cold source for the entire shaping system. The refrigeration medium begins to circulate in the condensing pipe 66 and its connected condensing auxiliary pipe 67 to prepare for cooling. The material to be shaped is fed into the pipe mold 61 through the opening. Under the initial shaping action of the pipe mold 61, the material forms a rough pipe shape. The motor 4 is powered on and drives the rotating column 64 and the drive gear 63 to rotate. The drive gear 63 meshes with the teeth on the outer wall of the rotating seat 62, driving the rotating seat 62 to rotate. The heat-absorbing jacket 65 and the heat-conducting strips 69 on its outer wall and the pipe mold 61 rotate accordingly. During the rotation, the pipe mold 61 is in continuous contact with the outer surface of the condensing pipe 66. The heat generated by the pipe mold 61 during processing is absorbed by the heat-absorbing jacket 65 and the heat-conducting strips 69 and quickly transferred to the condensing pipe 66 in the hollow structure. The refrigeration medium in the condensing pipe 66 carries away the heat, achieving uniform cooling and shaping of the pipe mold 61, ensuring uniform cooling of all parts of the product, and improving the shaping quality.
[0029] The auxiliary cover 51 is tightly connected to the support ring plate 52 by threads. The suction head 54 is detachably connected to the inner wall of the auxiliary cover 51. The suction head 54, through its own slots, works with external equipment to create a vacuum environment inside the pipe mold 61. Under the action of vacuum negative pressure, the material inside the pipe mold 61 better conforms to the shape of the mold, further improving the shaping effect. Different specifications of suction heads 54 can be replaced to adapt to various vacuum equipment, enhancing the versatility and flexibility of the equipment. Under the combined action of the rotational cooling of the pipe mold 61 and vacuum-assisted shaping, the material gradually cools and solidifies into a pipe product of the required shape and size. After the product is shaped, the operation of the motor 4 and the refrigeration unit 3 is stopped, the observation door 2 is opened, and the shaped product is taken out from the pipe mold 61, completing the entire shaping process.
[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A multi-stage vacuum forming mold, comprising a processing box (1), characterized in that: The front surface of the processing box (1) is detachably connected to an observation door (2). A refrigeration unit (3) is fixedly installed on the right surface of the processing box (1). A motor (4) is fixedly installed on the right end of the upper surface of the processing box (1). A shaping component (6) is provided inside the processing box (1). An auxiliary component (5) is provided on the top of the shaping component (6). The shaping component (6) includes a rotating seat (62). A heat-absorbing sleeve (65) is fixedly connected to the upper surface of the rotating seat (62). The outer wall of the heat-absorbing sleeve (65) Multiple sets of evenly distributed heat-conducting strips (69) are fixedly installed. A condensing pipe (66) is fixedly installed inside the heat-absorbing jacket (65). A condensing sub-pipe (67) is provided on the right side of the condensing pipe (66). The inlet and outlet ends of the condensing pipe (66) on the right side are fixedly connected to the upper and lower ends of the condensing sub-pipe (67) respectively through connectors (68). A circulating water pump (610) is fixedly connected to the outside of the condensing sub-pipe (67). A pipe mold (61) is fixedly connected to the left end of the upper surface of the processing box (1).
2. The multi-stage vacuum forming mold according to claim 1, characterized in that: The auxiliary component (5) includes a support ring plate (52), the top of which is provided with a threaded groove (53), the outer wall of which is detachably connected to an auxiliary cover (51), and the inner wall of which is detachably connected to a suction head (54).
3. The multi-stage vacuum forming mold according to claim 1, characterized in that: The outer wall of the pipe mold (61) is in contact with the outer surface of the condensation pipe (66).
4. The multi-stage vacuum forming mold according to claim 1, characterized in that: The bottom output shaft of the motor (4) passes through the processing box (1). The bottom output shaft of the motor (4) is fixedly connected to a rotating column (64). The bottom of the rotating column (64) is fixedly connected to a drive gear (63). The bottom surface of the drive gear (63) is rotatably connected to the inner bottom surface of the processing box (1).
5. A multi-stage vacuum forming mold according to claim 4, characterized in that: The gear edge of the drive gear (63) meshes with the teeth of the outer wall of the rotating seat (62).
6. A multi-stage vacuum forming mold according to claim 1, characterized in that: The heat-absorbing sleeve (65) has a hollow internal structure.
7. A multi-stage vacuum forming mold according to claim 1, characterized in that: The rotating seat (62) is rotatably connected to the bottom of the inner wall of the processing box (1).
8. A multi-stage vacuum forming mold according to claim 2, characterized in that: The support ring plate (52) is fixedly installed on the top of the pipe mold (61).