A pre-impregnation press steel roller
Patent Information
- Application Number
- CN202521970564.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-14
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-09-14
AI Technical Summary
现有预浸机压合钢辊大多存在辊面跳动大、辊面温度不均匀，造成预浸料产品质量不稳定，影响预浸料产品质量和生产效率
[0011] Compared with existing technologies, this invention uses several partitions to divide the entire heat transfer oil chamber into several heat transfer oil channels, allowing the heat transfer oil to flow evenly to the circumference of the roller shell, uniformly heating the entire pressing steel roller and causing it to expand evenly. By incorporating guide plates within each heat transfer oil channel, the flow path of the heat transfer oil is extended, reducing the temperature difference across the entire pressing steel roller. Furthermore, the pressing steel roller is made of 42CrMo material, which has good thermal stability and uniform thermal expansion, thus ensuring the amount of runout on the roller surface. The pre-impregnation machine pressing steel roller described in this invention ensures that the runout at both ends and in the middle of the roller surface remains within a reasonable and controllable range, resulting in low runout and high straightness.
Smart Images
Figure CN224765840U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of composite material prepreg processing equipment, and specifically relates to a prepreg press steel roller. Background Technology
[0002] Prepreg is an intermediate substrate in the production of composite materials. Prepreg machines are primarily used to produce prepregs, completing the impregnation and bonding of resin and fiber. The resin content, resin and fiber uniformity, and surface smoothness of the prepreg are crucial to the overall performance of the composite material. The hot pressing mechanism in the prepreg machine is key to prepreg production, and the pressing steel roller is a critical component within this mechanism. The amount of roller surface runout and temperature deviation directly affects the resin content, resin and fiber uniformity, and surface smoothness of the prepreg. Currently, most prepreg machine pressing steel rollers suffer from large roller surface runout and uneven roller surface temperature, resulting in unstable prepreg product quality and impacting both product quality and production efficiency. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a prepreg press steel roller that is reasonably designed, simple in structure, has low runout, and high straightness, in order to overcome the shortcomings of the existing technology.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A prepreg pressing steel roller includes a roller shell and an inner liner. A heat-conducting oil cavity for filling heat-conducting oil is provided between the inner liner and the roller shell. Both ends of the inner liner are fixedly connected to shaft heads provided at both ends of the roller shell. The characteristic is that one of the shaft heads is configured as a heat-conducting shaft head communicating with the heat-conducting oil cavity. The heat-conducting shaft head is provided with an oil inlet channel and an oil return channel communicating with the heat-conducting oil cavity. Several baffles are provided in the heat-conducting oil cavity, which is divided into several heat-conducting oil channels by the baffles. Each heat-conducting oil channel is provided with an oil inlet hole communicating with the oil inlet channel and an oil outlet hole communicating with the oil outlet channel. A guide plate is provided between the oil outlet hole and the oil inlet hole. One end of the guide plate is a fixed end that is fixedly connected to the end face of the roller shell. The oil outlet hole and the oil inlet hole are located on the heat-conducting shaft head or inner liner near the fixed end of the guide plate. The other end of the guide plate is provided with a connecting port. The heat-conducting oil channels form a U-shaped channel for extending the flow path of the heat-conducting oil through the guide plate and the connecting port.
[0005] The technical problem to be solved by this utility model can also be achieved by the following technical solution: a hollow channel is provided in the heat-conducting shaft head along the axis of the heat-conducting shaft head, an oil inlet is provided at the outer end of the hollow channel, the inner end of the hollow channel is closed, and an oil return pipe as an oil return channel is installed in the hollow channel. The space between the oil return pipe and the hollow channel constitutes an oil inlet channel. An annular oil groove is provided on the outer wall of the heat-conducting shaft head to connect the oil inlet channel and the heat-conducting oil cavity. The annular oil groove is arranged in a circle around the circumference of the heat-conducting shaft head. A return cavity communicating with the return oil channel is provided at the inner end of the heat-conducting shaft head.
[0006] The technical problem to be solved by this utility model can also be achieved through the following technical solution: a blocking plate is installed inside the inner liner, and the cavity between the blocking plate and the heat-conducting shaft head constitutes a reflux cavity.
[0007] The technical problem to be solved by this utility model can also be achieved by the following technical solution: the partition is evenly arranged along the circumference of the inner liner.
[0008] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the guide plate is disposed on the central axis of the heat transfer oil channel.
[0009] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the oil inlet hole and the return hole are not located on the same cross-section.
[0010] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the roller shell is a press-fitted steel roller shell, and the inner liner is a press-fitted steel roller inner liner.
[0011] Compared with existing technologies, this invention uses several partitions to divide the entire heat transfer oil chamber into several heat transfer oil channels, allowing the heat transfer oil to flow evenly to the circumference of the roller shell, uniformly heating the entire pressing steel roller and causing it to expand evenly. By incorporating guide plates within each heat transfer oil channel, the flow path of the heat transfer oil is extended, reducing the temperature difference across the entire pressing steel roller. Furthermore, the pressing steel roller is made of 42CrMo material, which has good thermal stability and uniform thermal expansion, thus ensuring the amount of runout on the roller surface. The pre-impregnation machine pressing steel roller described in this invention ensures that the runout at both ends and in the middle of the roller surface remains within a reasonable and controllable range, resulting in low runout and high straightness. Attached Figure Description
[0012] Figure 1 This is a structural diagram of the prepreg pressing steel roller described in this utility model; Figure 2 This is a diagram showing the flow direction of the heat transfer oil in the pressing steel roller of the prepreg machine described in this utility model; Figure 3 for Figure 2 Sectional view along axis AA; Figure 4 for Figure 2 BB-direction sectional view; Figure 5 This is a diagram of the internal structure of the heat-conducting oil cavity.
[0013] In the diagram: 1-Return oil pipe, 2-Heat-conducting shaft head, 3-Blocking plate, 4-Inner liner, 5-Roller shell, 6-Installation shaft head, 7-Annular oil groove, 8-Return cavity, 9-Heat-conducting oil cavity, 10-Baffle plate, 11-Guide plate, 12-Oil inlet hole, 13-Return hole, 14-Heat-conducting oil flow channel, 15-Connecting port. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0016] Reference Figure 1-5 A prepreg pressing steel roller includes a roller shell 5 and an inner liner 4. A heat-conducting oil cavity for filling heat-conducting oil is provided between the inner liner 4 and the roller shell 5. Both ends of the inner liner 4 are fixedly connected to shaft ends located at both ends of the roller shell 5. One of the shaft ends is configured as a heat-conducting shaft end 2 that communicates with the heat-conducting oil cavity. The heat-conducting shaft end 2 is provided with an oil inlet channel and an oil return channel that communicate with the heat-conducting oil cavity. The other shaft end is a mounting shaft end 6. A plurality of baffles 10 are provided in the heat-conducting oil cavity, and the heat-conducting oil cavity is divided into a plurality of heat-conducting oil channels 14 by the baffles 10. Each heat-conducting oil channel 14 is provided with an oil inlet hole 12 communicating with the oil inlet channel and an oil outlet hole 13 communicating with the oil outlet channel. A guide plate 11 is provided between the oil outlet hole 13 and the oil inlet hole 12. One end of the guide plate 11 is a fixed end that is fixedly connected to the end face of the roller shell. The oil outlet hole 13 and the oil inlet hole 14 are located on the heat-conducting shaft head 2 or the inner liner near the fixed end of the guide plate. The other end of the guide plate 11 is provided with a connecting port 15. The heat-conducting oil channel 14 forms a U-shaped channel for extending the flow path of the heat-conducting oil through the guide plate 11 and the connecting port 15.
[0017] A hollow channel is provided inside the heat-conducting shaft head 2 along the axis of the heat-conducting shaft head. An oil inlet is provided at the outer end of the hollow channel, and the inner end of the hollow channel is closed. An oil return pipe 1, which serves as an oil return channel, is installed inside the hollow channel. The oil return pipe 1 is connected to the heat-conducting oil cavity. The space between the oil return pipe 1 and the hollow channel constitutes an oil inlet channel, which is connected to the heat-conducting oil cavity. An annular oil groove 7 is provided on the outer wall of the heat-conducting shaft head 2 to connect the oil inlet channel and the heat-conducting oil cavity. The annular oil groove 7 is arranged in a circle around the circumference of the heat-conducting shaft head 2. The heat-conducting shaft head is provided with a through hole I that connects the annular oil groove and the oil inlet channel, and the inner liner sidewall is provided with a through hole II that connects the annular oil groove and the heat-conducting oil cavity. The through hole I and the through hole II together constitute the oil inlet hole 14. The number of through holes I and the through hole II is the same as the number of heat-conducting oil channels, and they are evenly arranged along the circumference of the heat-conducting shaft head. A return cavity 8 communicating with the oil return channel is provided at the inner end of the heat-conducting shaft head 2. A block plate 3 is installed in the inner liner 4. The cavity between the block plate 3 and the heat-conducting shaft head 2 constitutes the return cavity.
[0018] The partition 10 is evenly arranged along the circumference of the inner liner, and the guide plate 11 is located on the central axis of the heat transfer oil channel 14, so that the roller shell is heated evenly and the overall expansion is uniform after the heat transfer oil is heated. The oil inlet and return hole are not located on the same cross section. The roller shell is a press-fit steel roller shell, the inner liner is a press-fit steel roller inner liner, and the shaft head is also a press-fit steel shaft head. The press-fit steel used above is all made of 42CrMo. The press-fit steel roller made of 42CrMo ensures that the entire press-fit steel roller can maintain a small amount of runout regardless of the temperature.
[0019] The installation process of the prepreg pressing steel roller of this utility model is as follows: the inner end of the oil return pipe 1 is fixed to the inner end of the heat-conducting shaft head 2 by a threaded connection; the heat-conducting shaft head 2 and the plug plate 3 are fixed to one end of the inner liner 4 and the roller shell 5 of the pressing steel roller by heat-sealing welding, forming an oil inlet chamber 7 and a return chamber 8; the mounting shaft head 6 is fixed to the other end of the inner liner 4 and the roller shell 5 of the pressing steel roller by heat-sealing welding. After the oil return pipe 1, the heat-conducting shaft head 2, the plug plate 3, the inner liner 4, and the mounting shaft head 6 are made into a whole, they are fixed to the inside of the roller shell 5 of the pressing steel roller by heat-sealing welding, forming a heat-conducting oil chamber 9.
[0020] The working principle of the prepreg pressing steel roller of this utility model is as follows: the heat transfer oil flows through the annular channel between the outer wall of the return oil pipe 1 and the inner hole of the heat transfer shaft head 2 into the annular oil groove 7, and then enters the heat transfer oil chamber 9 through the oil inlet holes 12 evenly distributed on the circumference of the inner liner 4. Figure 2 , Figure 3The heat transfer oil chamber 9 is composed of a partition plate 10, a guide plate 11, and a roller shell 5, forming four sets of evenly distributed U-shaped flow channels on the outer circumferential surface of the inner liner 4. The heat transfer oil enters through the oil inlet 12 in the U-shaped flow channels under its own pressure, flows along the guide plate 11 through the connecting port 15 to form a U-shaped return flow to the return hole 13, and then enters the return chamber 8, and then flows out through the return oil pipe 1. The heat transfer oil conducts heat to the roller shell 5 during its flow in the U-shaped channel. As the heat of the heat transfer oil is absorbed by the roller shell 5, the heat is gradually consumed during the flow, creating a temperature difference between the oil inlet and outlet in the heat transfer oil cavity. At this time, the oil inlet and outlet compensate for each other's temperature through the partition 10 and the guide plate 11, achieving dynamic temperature balance of the heat transfer oil. This ensures uniform heating of the roller shell 5 by the heat transfer oil, guaranteeing the uniformity of the temperature of the pressed steel roller surface. In addition, the material used for the pressed steel roller is 42CrMo, which has good thermal stability and uniform thermal expansion, thus ensuring the amount of runout of the pressed steel roller surface.
[0021] The heat-conducting oil in the prepreg pressing steel roller of this utility model repeatedly flows in and out, uniformly heating the pressing steel roller and causing it to expand uniformly. This ensures that the runout at both ends and in the middle of the roller surface remains within a reasonable and controllable range. The pressing steel roller with low runout and high straightness ensures that the prepreg to be pressed is uniformly compressed, resulting in uniform resin and fiber surface density, high surface flatness, and good appearance consistency. This meets the usage requirements of the prepreg processing technology, ensures the stability of the prepreg product's flatness and other quality aspects, and improves production efficiency.
[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A prepreg pressing steel roller, comprising a roller shell and an inner liner, wherein a heat-conducting oil cavity for filling heat-conducting oil is provided between the inner liner and the roller shell, and both ends of the inner liner are fixedly connected to shaft ends provided at both ends of the roller shell, characterized in that, One of the shaft heads is configured as a heat-conducting shaft head that communicates with the heat-conducting oil cavity. The heat-conducting shaft head is provided with an oil inlet channel and an oil return channel that communicate with the heat-conducting oil cavity. Several baffles are provided inside the heat-conducting oil cavity, which is divided into several heat-conducting oil channels by the baffles. Each heat-conducting oil channel has an oil inlet hole communicating with the oil inlet channel and an oil outlet hole communicating with the oil outlet channel at its bottom. A guide plate is provided between the oil outlet hole and the oil inlet hole. One end of the guide plate is a fixed end that is fixedly connected to the end face of the roller shell. The oil outlet hole and the oil inlet hole are located on the heat-conducting shaft head or inner liner near the fixed end of the guide plate. The other end of the guide plate is provided with a connecting port. The heat-conducting oil channels form a U-shaped channel for extending the flow path of the heat-conducting oil through the guide plate and the connecting port.
2. A pre-dip presser steel roller as claimed in claim 1, wherein, A hollow channel is provided inside the heat-conducting shaft head along the axis of the heat-conducting shaft head. An oil inlet is provided at the outer end of the hollow channel, and the inner end of the hollow channel is closed. An oil return pipe is installed inside the hollow channel as an oil return channel. The space between the oil return pipe and the hollow channel constitutes the oil inlet channel. An annular oil groove is provided on the outer wall of the heat-conducting shaft head to connect the oil inlet channel and the heat-conducting oil cavity. The annular oil groove is arranged in a circle around the circumference of the heat-conducting shaft head. A return cavity communicating with the return oil channel is provided at the inner end of the heat-conducting shaft head.
3. A pre-dip presser steel roller as claimed in claim 2, wherein, A blocking plate is installed inside the inner liner, and the cavity between the blocking plate and the heat-conducting shaft head constitutes a reflux cavity.
4. A pre-dip presser steel roller as claimed in claim 1, wherein, The partitions are evenly arranged along the circumference of the inner liner.
5. A pre-dip presser steel roller as claimed in claim 1, wherein, The guide plate is located on the central axis of the heat transfer oil channel.
6. A pre-dip presser steel roller as claimed in claim 1, wherein, The oil inlet and return outlet are not located on the same cross-section.
7. A pre-dip presser steel roller as claimed in claim 1, wherein, The roller shell is a press-fitted steel roller shell, and the inner liner is a press-fitted steel roller inner liner.