Small angle winding die device
By designing a small-angle winding mold device including a core mold, a stop screw and a yarn hanging ring, the problem of the small-angle winding process of resin-based continuous fiber yarn reinforced composite materials with a minimum angle winding process of less than 20゜ in the prior art is solved, and a high-quality winding process and the effect of reducing production costs are achieved.
Patent Information
- Application Number
- CN202420676205.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-04-03
AI Technical Summary
The prior art is difficult to realize a small angle winding process of resin-based continuous fiber yarn reinforced composite material less than 20゜, resulting in irregular sliding and inability to hang the yarn sheet when the fiber yarn sheet is reversed at the ends of the winding at both ends of the core mold, resulting in confusion in the winding rules and failure in the process implementation.
A small angle winding mold device is designed, including a core mold, a stop screw and a yarn hanging ring. The core die has shoulders at both ends, and the yarn hanging ring is fixed to the core die by a stop screw. The outer diameter of the yarn hanging ring is consistent with the outer diameter at the contact point of the core die, and has interlaced yarn spacer teeth to maintain the linear state of the fiber yarn and to hang the fiber yarn when the winding end is reversed.
A high-quality small-angle winding process is realized to ensure that the fiber yarn remains linear at a winding angle less than 20゜, avoid the fiber yarn from moving back, improve product quality and production efficiency, and reduce production costs.
Smart Images
Figure CN222712836U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of process equipment design and manufacturing, and relates to a mold device that meets the small-angle winding process of resin-based continuous fiber yarn reinforced composite materials, in particular to a small-angle winding mold device. Background Art
[0002] Resin-based fiber-reinforced composite materials have the characteristics of good corrosion resistance, high strength, light weight, and strong designability. At the same time, they have the advantage of being able to be manufactured and formed on a large scale at low cost using molds, making resin-based fiber-reinforced composite materials more and more widely used in many fields. Using winding machine equipment, winding resin-based continuous fiber-reinforced composite materials on the core mold to shape and put them into an oven for curing is a commonly used composite material molding process. The fiber winding products are of high quality and stable performance, and mechanical automation can be realized. A resin-based continuous fiber-reinforced composite pipe body that requires very high rigidity needs to be designed with a winding layer structure with a winding angle of less than 20°. This winding with a very small angle with the core mold axis is difficult to implement, mainly because when the fiber yarn sheet changes direction at the winding end position at both ends of the core mold, the fiber yarn sheet slides irregularly and cannot hold the yarn sheet, causing the winding pattern to be disordered, resulting in the failure of the winding process. Utility Model Content
[0003] (I) Purpose of the utility model
[0004] The utility model aims to provide a mold device which meets the small-angle winding process of resin-based continuous fiber yarn reinforced composite materials.
[0005] (II) Technical solution
[0006] In order to solve the above technical problems, the utility model provides a small-angle winding mold device, which includes: a core mold 1, two set screws 2 and two yarn hanging rings 3, the core mold 1 is provided with shoulders at both ends, and the two yarn hanging rings 3 are respectively positioned and installed on the core mold 1 along the radial direction by the set screws 2.
[0007] The core mold 1 includes a tube body 5 and a first plug 4 and a second plug 6 arranged at both ends of the tube body 5. The first plug 4, the tube body 5 and the second plug 6 are connected into one by welding. Shaft shoulders are formed on the first plug 4 and the second plug 6 respectively.
[0008] Among them, one end of the first plug 4 is connected to one end of the tube body 5, a first shaft shoulder 8 is provided in the middle, and a demoulding hole 7 is provided on the outer wall of the other end. The mold device is connected to the tube stripping machine equipment through the demoulding hole 7.
[0009] The outer wall of the tube body 5 is provided with an annular cutting groove 10, which is close to one end of the tube body 5. The cutting groove 10 is used to cut off the waste hair at one end of the composite material product before demoulding.
[0010] Among them, the first yarn cutting groove 9 and the second yarn cutting groove 12 are respectively provided at the end surfaces of the tube body 5 that contact the yarn hanging ring 3. The first yarn cutting groove 9 and the second yarn cutting groove 12 are annular steps formed on the outer walls of the two ends of the tube body 5, which are used to cut the wound yarn here before solidification.
[0011] Among them, one end of the second plug 6 is connected to the other end of the tube body 5, a second shoulder 13 is provided in the middle, and a positioning clamping groove 14 for a three-jaw chuck is provided on the end surface of the other end. The mold device is clamped on the winding machine equipment through the positioning clamping groove 14.
[0012] Among them, the yarn hanging ring 3 includes a steel ring 15, a first row of yarn spacer teeth 16 and a second row of yarn spacer teeth 17. The outer diameter of the steel ring 15 is consistent with the outer diameter of the core mold 1. The first row of yarn spacer teeth 16 and the second row of yarn spacer teeth 17 both include a plurality of spacer teeth evenly spaced circumferentially along the outer peripheral surface of the steel ring 15. The spacer teeth of the first row of yarn spacer teeth 16 and the spacer teeth of the second row of yarn spacer teeth 17 are evenly staggered, so that any spacer tooth of the first row of yarn spacer teeth 16 is located in the middle of two adjacent spacer teeth of the second row of yarn spacer teeth 17, and any spacer tooth of the second row of yarn spacer teeth 17 is located in the middle of two adjacent spacer teeth of the first row of yarn spacer teeth 16; the angle of the line connecting the centers of two adjacent spacer teeth of the first row of yarn spacer teeth 16 and the second row of yarn spacer teeth 17 is consistent with the winding line angle.
[0013] Among them, the inner end face of the steel ring 15 is attached to the connecting end face of the yarn hanging ring 3 and the tube body 5, and the outer end face of the steel ring 15 is provided with a head curved surface 18, which is used to hang the fiber yarn when the winding end is reversed to prevent the fiber yarn from going back.
[0014] The first row of yarn spacer teeth 16 and the second row of yarn spacer teeth 17 are arranged on the inner side of the end cap curved surface 18, and the gap at the root of each row of yarn spacer teeth is consistent with the width of the unfolded fiber yarn.
[0015] A threaded hole 19 is radially provided on the steel ring 15 , and the threaded hole 19 is close to the inner end surface of the steel ring 15 . The set screw 2 passes through the threaded hole 19 to fix the corresponding yarn hanging ring 3 on the shoulder of the core mold 1 .
[0016] (III) Beneficial effects
[0017] The small-angle winding mold device provided by the above technical solution has the following beneficial effects:
[0018] (1) A yarn hanging ring is provided at the shaft shoulders at both ends of the core mold. The outer diameter of the yarn hanging ring is consistent with the outer diameter of the contact point of the core mold. When winding, it is ensured that the linear state of the fiber yarn remains consistent when it transitions from the core mold to the yarn hanging ring.
[0019] (2) Two rows of yarn spacer teeth are arranged at the edge of the end surface of the yarn hanging ring. The yarn spacer teeth in each row are evenly distributed at equal angles. The gap at the root of the yarn teeth is aligned with the width of the unfolded fiber yarn. The radial positions of the two rows of yarn spacer teeth are evenly staggered by half an angle. The angle of the center line of the two adjacent teeth in the front and rear rows is aligned with the angle of the winding line, so that each fiber yarn is arranged correspondingly between the yarn spacer teeth, ensuring that each fiber yarn always maintains the same linear state at the end of winding. At the same time, the end surface of the yarn hanging ring facing the outer end of the core mold is convenient for hanging the fiber yarn when the winding end changes direction, and the fiber yarn will not go back.
[0020] (3) A yarn cutting groove is provided at the contact end surface between the core mold and the yarn hanging ring, so that the wound fiber yarn can be cut off and the yarn hanging ring can be taken out before solidification, the yarn on the surface of the yarn hanging ring can be cleaned, and then the resin on the surface can be cleaned so that the yarn hanging ring can be reused.
[0021] (4) The small-angle winding mold device can ensure the high-quality implementation of the small-angle winding process of the fiber yarn with a winding angle of less than 20°, and at the same time can greatly save the cost of the small-angle winding products. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 The main view of the device structure is shown;
[0023] Figure 2 It is a schematic main view of the core mold structure;
[0024] Figure 3 for Figure 2 Section view of view AA;
[0025] Figure 4 It is a schematic front view of the yarn hanging ring structure;
[0026] Figure 5 for Figure 4 The left view of the view;
[0027] Figure 6 A three-dimensional diagram showing the structure of the hanging yarn ring. DETAILED DESCRIPTION
[0028] In order to make the purpose, content and advantages of the utility model clearer, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments.
[0029] Reference Figures 1 to 6As shown, the small-angle winding mold device of this embodiment includes a core mold 1, two set screws 2 and two yarn hanging rings 3. Shaft shoulders are provided at both ends of the core mold 1, and the two yarn hanging rings 3 are radially positioned and installed on the core mold 1 by the set screws 2.
[0030] The core mold 1 includes a tube body 5 and a first plug 4 and a second plug 6 arranged at both ends of the tube body 5. The first plug 4, the tube body 5 and the second plug 6 are connected into one body by welding.
[0031] One end of the first plug 4 is connected to one end of the tube body 5, a first shoulder 8 is provided in the middle, and a demoulding hole 7 is provided on the outer wall of the other end. The mold device is connected to the tube stripping machine through the demoulding hole 7 to facilitate the composite material product to be ejected from the cavity surface of the mold device.
[0032] An annular cutting groove 10 is provided on the outer wall of the tube body 5 , and the cutting groove 10 is close to one end of the tube body 5 . The cutting groove 10 is used to cut off the waste hair at one end of the composite material product before demoulding.
[0033] The first yarn cutting groove 9 and the second yarn cutting groove 12 are respectively provided at the end surfaces of the tube body 5 that contact the yarn hanging ring 3. The first yarn cutting groove 9 and the second yarn cutting groove 12 are annular steps formed on the outer walls of the two ends of the tube body 5, which are convenient for cutting the wound yarn before solidification. Loosen the set screw 2 to take out the yarn hanging ring 3, clean and remove the yarn on the surface of the yarn hanging ring 3, and then clean the resin on the surface of the yarn hanging ring 3 so that the yarn hanging ring 3 can be reused.
[0034] One end of the second plug 6 is connected to the other end of the tube body 5, a second shoulder 13 is provided in the middle, and a positioning clamping groove 14 for a three-jaw chuck is provided on the end surface of the other end, and the mold device is clamped on the winding machine through the positioning clamping groove 14. The positioning clamping groove 14 is an outer three-sided groove matching the three-jaw chuck, and is used for clamping the three-jaw chuck of the winding machine. Since the yarn tension is large during winding, the torque acting on the mold surface is also large. If the three-jaw chuck clamps the pure cylindrical surface, it will cause the mold to slip and rotate during winding, affecting the realization of the winding function.
[0035] The yarn hanging ring 3 includes a steel ring 15, a first row of yarn spacer teeth 16 and a second row of yarn spacer teeth 17. The outer diameter of the steel ring 15 is consistent with the outer diameter of the core mold. The first row of yarn spacer teeth 16 and the second row of yarn spacer teeth 17 both include a plurality of spacer teeth evenly spaced circumferentially along the outer peripheral surface of the steel ring 15. The spacer teeth of the first row of yarn spacer teeth 16 and the spacer teeth of the second row of yarn spacer teeth 17 are evenly staggered, so that any spacer tooth of the first row of yarn spacer teeth 16 is located in the middle of two adjacent spacer teeth of the second row of yarn spacer teeth 17, and any spacer tooth of the second row of yarn spacer teeth 17 is located in the middle of two adjacent spacer teeth of the first row of yarn spacer teeth 16; the angle of the line connecting the centers of two adjacent spacer teeth of the first row of yarn spacer teeth 16 and the second row of yarn spacer teeth 17 is consistent with the winding line angle.
[0036] The inner end face of the steel ring 15 is attached to the connecting end face of the yarn hanging ring 3 and the tube body 5, and the outer end face of the steel ring 15 is provided with a head curved surface 18, which is convenient for hanging the fiber yarn when the winding end is reversed, and the fiber yarn will not go back. The first row of yarn spacing teeth 16 and the second row of yarn spacing teeth 17 are arranged on the inner side of the head curved surface 18, and each row of spacing teeth is evenly distributed at equal angles, and the gap at the root of each row of spacing teeth is consistent with the width of the fiber yarn. The height of each row of spacing teeth is about twice the thickness of the winding product, but not less than 5 mm.
[0037] A threaded hole 19 is radially provided on the steel ring 15 , and the threaded hole 19 is close to the inner end surface of the steel ring 15 . The set screw 2 passes through the threaded hole 19 to fix the corresponding yarn hanging ring 3 on the shoulder of the core mold 1 .
[0038] The outer diameter of the steel ring 15 is consistent with the outer diameter of the core mold 1 , so that the outer surface 20 of the steel ring 15 is coplanar with the outer surface 11 of the core mold 1 .
[0039] Based on the above technical scheme, it is verified through experiments that the device can ensure the high-quality implementation of the small-angle winding process of fiber yarn with a winding angle of less than 20°. The linear state of the small-angle fiber yarn is stable and accurate, the product quality is reliable, the consistency is good, the mold structure is simple, the operation is convenient and fast, the production efficiency is high, the production cost is reduced, and it can meet the production needs of large-scale fiber yarn small-angle winding products.
[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A small angle winding mold device, characterized in that: include: The invention comprises a core mold (1), two fixing screws (2) and two yarn hanging rings (3). The two ends of the core mold (1) are provided with shaft shoulders. The two yarn hanging rings (3) are respectively positioned and installed on the core mold (1) in a radial direction by the fixing screws (2).
2. The small angle winding mold device according to claim 1, characterized in that: The core mold (1) comprises a tube body (5) and a first plug (4) and a second plug (6) arranged at both ends of the tube body (5); the first plug (4), the tube body (5) and the second plug (6) are connected into one piece by welding; and shaft shoulders are formed on the first plug (4) and the second plug (6) respectively.
3. The small angle winding mold device according to claim 2, characterized in that: One end of the first plug (4) is connected to one end of the tube body (5), a first shaft shoulder (8) is provided in the middle, and a demoulding hole (7) is provided on the outer wall of the other end, and the mold device is connected to the tube stripping machine equipment through the demoulding hole (7).
4. The small angle winding mold device according to claim 3, characterized in that: An annular cutting groove (10) is provided on the outer wall of the tube body (5), the cutting groove (10) being close to one end of the tube body (5), and the cutting groove (10) being used to cut off the waste hair at one end of the composite material product before demoulding.
5. The small angle winding mold device according to claim 4, characterized in that: A first yarn cutting groove (9) and a second yarn cutting groove (12) are respectively provided at the end surfaces of the two ends of the tube body (5) contacting the yarn hanging ring (3); the first yarn cutting groove (9) and the second yarn cutting groove (12) are annular steps formed on the outer walls of the two ends of the tube body (5) and are used to cut the wound yarn before solidification.
6. The small angle winding mold device according to claim 5, characterized in that: One end of the second plug (6) is connected to the other end of the tube body (5), a second shaft shoulder (13) is provided in the middle, and a positioning clamping groove (14) for a three-jaw chuck is provided at the other end, and the mold device is clamped on the winding machine equipment through the positioning clamping groove (14).
7. The small angle winding mold device according to claim 6, characterized in that: The yarn hanging ring (3) comprises a steel ring (15), a first row of yarn spacer teeth (16) and a second row of yarn spacer teeth (17); the outer diameter of the steel ring (15) is consistent with the outer diameter of the core mold (1); the first row of yarn spacer teeth (16) and the second row of yarn spacer teeth (17) both comprise a plurality of spacer teeth evenly spaced and arranged circumferentially along the outer peripheral surface of the steel ring (15); the spacer teeth of the first row of yarn spacer teeth (16) and the spacer teeth of the second row of yarn spacer teeth (17) are evenly staggered, so that any spacer tooth of the first row of yarn spacer teeth (16) is located in the middle of two adjacent spacer teeth of the second row of yarn spacer teeth (17); and any spacer tooth of the second row of yarn spacer teeth (17) is located in the middle of two adjacent spacer teeth of the first row of yarn spacer teeth (16); and the angle of the center line of two adjacent spacer teeth of the first row of yarn spacer teeth (16) and the second row of yarn spacer teeth (17) is consistent with the winding line angle.
8. The small angle winding mold device according to claim 7, characterized in that: The inner end surface of the steel ring (15) is fitted onto the connecting end surface of the yarn hanging ring (3) and the tube body (5), and the outer end surface of the steel ring (15) is provided with a head curved surface (18), which is used to hang the fiber yarn when the winding end is reversed to prevent the fiber yarn from returning.
9. The small angle winding mold device according to claim 8, characterized in that: The first row of yarn spacing teeth (16) and the second row of yarn spacing teeth (17) are arranged on the inner side of the end cap curved surface (18), and the gap at the root of each row of yarn spacing teeth is consistent with the width of the unfolded fiber yarn.
10. The small angle winding mold device according to claim 9, characterized in that: The steel ring (15) is provided with a threaded hole (19) in the radial direction, the threaded hole (19) is close to the inner end surface of the steel ring (15), and a set screw (2) passes through the threaded hole (19) to fix the corresponding yarn hanging ring (3) on the shaft shoulder of the core mold (1).