PTFE (Polytetrafluoroethylene) mixing and pre-compacting equipment
By designing PTFE mixing prepressing equipment and using a dual-cylinder design to integrate the mixing and preforming process, the limitations of traditional equipment in extrusion pressure and speed and complex production processes are solved, and more efficient blank forming and production efficiency are achieved.
Patent Information
- Application Number
- CN202421293300.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-06-07
AI Technical Summary
Traditional PTFE blank production equipment has limitations in extrusion pressure and speed, which is difficult to meet the production needs of high efficiency and high quality. At the same time, the mixing and preforming process are carried out separately, resulting in increased costs and extended production cycles.
A PTFE mixing prepressing blank equipment was designed, using a dual-cylinder design to integrate the mixing and preforming process, and more efficient extrusion is achieved through the double-sided support of the hydraulic cylinder and the barrel, simplifying the production process.
The extrusion efficiency and strength are improved, the blank forming is made more rapid and uniform, the production efficiency is significantly improved, and the cost and production cycle are reduced.
Smart Images
Figure CN222610209U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of material molding, in particular to a PTFE mixed material pre-pressing device. Background Art
[0002] At present, PTFE extrusion process has been widely used in many fields such as wires and cables, pipes, seals, etc.; however, due to the high melting point and viscosity of PTFE materials and poor fluidity at high temperatures, the traditional melt extrusion process is difficult to meet the processing requirements of PTFE products; therefore, it is necessary to use extrusion technology to prepare PTFE products; during the extrusion process, PTFE needs to be evenly mixed with various additives such as lubricants, coupling agents, etc. to ensure the stable performance of the blank during the extrusion process; then the raw material needs to be pre-pressed into a blank corresponding to the barrel of the pusher; pre-pressing can remove gas from the material, reduce voids and bubbles in the material, and improve the density and quality of the product; it can also adjust the density and compression ratio of the material, so as to better control the flow and shrinkage of the material in the subsequent extrusion and sintering process, and avoid problems such as shrinkage and deformation of the product.
[0003] However, in the production of PTFE blanks, the existing technology has the following problems: 1. Traditional equipment usually uses a single cylinder for extrusion, and its extrusion force and speed are often limited, making it difficult to meet the needs of high-efficiency and high-quality production; 2. The mixing and preforming processes are often carried out separately, requiring additional equipment and manpower, resulting in increased costs and extended production cycles. Utility Model Content
[0004] The purpose of this utility model is to design a PTFE mixing pre-pressing equipment to address the deficiencies of the existing technology. By integrating the mixing and preforming processes, the production process is simplified and the production efficiency is significantly improved. Its double cylinder design improves the extrusion efficiency and strength, making the blank forming faster and more uniform. The following technical solutions are adopted:
[0005] A PTFE mixing pre-pressing device comprises a hydraulic cylinder, a barrel, a left support frame, a motor, a stirring rod, a silo, a sliding baffle, a discharge cover and a right support frame; the hydraulic cylinder comprises a left hydraulic cylinder and a right hydraulic cylinder; the left hydraulic cylinder is fixedly connected to the left support frame, and the right hydraulic cylinder is fixedly connected to the right support frame; one side of the barrel is fixedly connected to the left support frame and the left hydraulic cylinder, and the other side is fixedly connected to the right support frame and the right hydraulic cylinder, the top of the barrel is connected to the silo, and a discharge cover is arranged at the lower middle of the barrel; the motor is fixedly connected to the top of the left support frame, and the chuck below the motor is locked and connected to the stirring rod, and the stirring rod extends into the silo; a sliding baffle is also arranged between the silo and the barrel.
[0006] Preferably, a mounting plane is provided on the upper surface of the barrel, a hole is provided in the center of the plane, and the hole diameter is 30-40 mm, through which the barrel is fixedly connected to the silo.
[0007] Preferably, a groove is provided on the bottom surface of the barrel, and a hole is provided at the center of the bottom surface, through which the barrel is fixedly connected to the discharge cover.
[0008] Preferably, the inner diameter of the discharge cover is consistent with the inner diameter of the barrel, and the inner diameter of the barrel is consistent with the inner diameter of the barrel in the subsequent extrusion process, which is 35-45 mm.
[0009] Preferably, the fixed connection method is specifically fixed connection by screws.
[0010] Compared with the closest prior art, the technical solution provided by the utility model has the following beneficial effects:
[0011] 1. The left and right double cylinder design of the utility model improves the extrusion efficiency and strength, making the blank forming more rapid and uniform; the silo is equipped with a stirring rod to fully stir and mix PTFE with various additives;
[0012] 2. The utility model provides a sliding baffle between the barrel and the silo to control the material discharge. After the materials are evenly mixed, the sliding baffle is moved to allow the materials to enter the barrel. The materials in the barrel are compressed by the left and right oil cylinders to form blanks. After the compression is completed, the unloading cover is opened to remove the blanks. By integrating the mixing and preforming processes, the production process is simplified and the production efficiency is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is an overall schematic diagram of the PTFE mixed material pre-pressing equipment of the utility model;
[0014] Figure 2 This is a schematic diagram of the barrel structure of the utility model;
[0015] Figure 3 This is a schematic diagram of the structure of the discharge cover of the utility model;
[0016] Figure 4 This is a schematic diagram of the structure of the silo and sliding baffle of the utility model;
[0017] Figure 5 This is a schematic diagram of the structure of the stirring rod of the utility model;
[0018] Among them: 1. Left hydraulic cylinder; 2. Left support frame; 3. Motor; 4. Agitator rod; 5. Silo; 6. Sliding baffle; 7. Discharge cover; 8. Barrel; 9. Right support frame; 10. Right hydraulic cylinder. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1-Figure 5 , the utility model provides a technical solution:
[0021] like Figure 1 As shown, a PTFE mixing pre-pressing equipment includes a hydraulic cylinder and a barrel 8, a left support frame 2, a motor 3, a stirring rod 4, a silo 5, a sliding baffle 6, a discharge cover 7, and a right support frame 9; the hydraulic cylinder includes a left hydraulic cylinder 1 and a right hydraulic cylinder 10; the left and right double cylinder design improves the extrusion efficiency and strength, making the blank forming more rapid and uniform. The left hydraulic cylinder 1 and the left support frame 2 are fixedly connected by screws, and the right hydraulic cylinder 10 and the right support frame 9 are fixedly connected by screws; one side of the barrel 8 is fixedly connected to the left support frame 2 and the left hydraulic cylinder 1 by screws, and the other side is fixedly connected to the right support frame 9 and the right hydraulic cylinder 10 by screws, the top of the barrel 8 is connected to the silo 5, and a discharge cover 7 is provided at the lower middle of the barrel 8; the motor 3 is fixedly connected to the top of the left support frame 2 by screws, and the lower chuck of the motor 3 is locked and connected to the stirring rod 4, and the stirring rod 4 extends into the silo 5; the silo 5 is provided with a stirring rod 4 to fully stir and mix the PTFE with various additives. As shown Figure 4 As shown, a sliding baffle 6 is provided between the silo 5 and the barrel 8, and the sliding baffle is moved to control the material in the silo to enter the barrel.
[0022] like Figure 2 As shown, further, a mounting plane is provided on the upper surface of the barrel 8, a hole is provided at the center of the plane, and the hole diameter is usually 30-40 mm. The barrel 8 is fixedly connected to the silo 5 through the hole.
[0023] like Figure 2 As shown, further, a groove is provided on the bottom surface of the barrel 8, and a hole is provided in the center of the bottom surface, through which the barrel 8 is fixedly connected to the discharge cover 7. After the left and right hydraulic cylinders simultaneously extrude the blank toward the center to form the blank, the blank is taken out by removing the discharge cover 7.
[0024] like Figure 3 As shown, further, the inner diameter of the discharge cover 7 is consistent with the inner diameter of the barrel 8, and the inner diameter of the barrel 8 needs to be consistent with the inner diameter of the barrel in the subsequent extrusion process, which is usually 35-45 mm.
[0025] The specific working process of the utility model is as follows: first, PTFE and various additives are added into the silo 5, and the motor 3 is started to drive the stirring rod 4 to stir and mix the raw materials. After the materials are evenly mixed, the sliding baffle 6 is moved to allow the materials to enter the barrel 8 from the silo 5. The left hydraulic cylinder 1 and the right hydraulic cylinder 10 are started to squeeze the materials toward the center of the barrel 8. After the required blank is extruded, the unloading cover 7 is removed to take out the blank. By integrating the mixing and preforming processes, the production process is simplified and the production efficiency is significantly improved.
[0026] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field can still modify or replace the specific implementation methods of the present invention. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the claims of the present invention to be approved.
Claims
1. A PTFE mixed material pre-pressing device, comprising a hydraulic cylinder and a barrel (8), characterized in that: The invention also comprises a left support frame (2), a motor (3), a stirring rod (4), a silo (5), a sliding baffle (6), a discharge cover (7), and a right support frame (9); the hydraulic cylinder comprises a left hydraulic cylinder (1) and a right hydraulic cylinder (10); the left hydraulic cylinder (1) and the left support frame (2) are fixedly connected, and the right hydraulic cylinder (10) and the right support frame (9) are fixedly connected; one side of the barrel (8) is fixedly connected to the left support frame (2) and the left hydraulic cylinder (1), and the other side is fixedly connected to the right support frame (9) and the right hydraulic cylinder (10); the upper part of the barrel (8) is connected to the silo (5), and a discharge cover (7) is arranged at the lower part of the middle of the barrel (8); the motor (3) is fixedly connected to the upper part of the left support frame (2), and the lower part of the motor (3) is lockedly connected to the stirring rod (4), and the stirring rod (4) extends into the silo (5); a sliding baffle (6) is also arranged between the silo (5) and the barrel (8).
2. A PTFE mixed pre-pressing device according to claim 1, characterized in that: The upper surface of the barrel (8) is provided with a mounting plane, the center of which is provided with a hole with a diameter of 30-40 mm, and the barrel (8) is fixedly connected to the silo (5) through the hole.
3. A PTFE mixed pre-pressing device according to claim 1, characterized in that: The bottom surface of the barrel (8) is provided with a groove, and the center of the bottom surface is provided with a hole, through which the barrel (8) is fixedly connected to the discharge cover (7).
4. A PTFE mixed pre-pressing device according to claim 3, characterized in that: The inner diameter of the discharge cover (7) is consistent with the inner diameter of the barrel (8), and the inner diameter of the barrel (8) is consistent with the inner diameter of the barrel in the subsequent extrusion process, which is 35-45 mm.
5. A PTFE mixed pre-pressing device according to claim 1, characterized in that: The fixed connection method is specifically fixed connection through screws.