Roller type yarn spreading tool
By designing a roller-type yarn expansion workpiece including a yarn guide assembly and a yarn expansion assembly, the problem of fiber strength damage and poor yarn expansion effect required to be applied by dry-winding yarn expansion device is solved, and stable yarn expansion and high-quality molding of the yarn is achieved.
Patent Information
- Application Number
- CN202421506473.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-06-28
AI Technical Summary
At this stage, the dry-winding wire yarn expansion device needs to apply a large tension during the yarn expansion process, resulting in damage to the fiber strength and the overall yarn expansion effect is not good.
A roller-type yarn expansion tool is designed, including a yarn guide assembly and a yarn expansion assembly. The yarn guide assembly is composed of a yarn guide roller and a yarn joint roller. The yarn expansion assembly is composed of a fixed pressing roller, a pressing pressing roller, a pressing bolt column and a pressing spring. Through the synergy of these components, stable yarn expansion of the yarn is achieved.
It effectively improves the working stability and forming quality of the yarn, ensures that the yarn remains stable and controllable during the yarn expansion process, avoids fiber strength damage, and improves the overall yarn expansion effect.
Smart Images
Figure CN222781184U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of yarn spreading tooling, in particular to a roller type yarn spreading tooling. Background Art
[0002] Yarn spreading technology is a process of spreading the fiber bundle evenly along the width direction and thinning the fiber bundle. The wider the fiber bundle is spread, the thinner the thickness will be. There are mainly mechanical methods, electrostatic methods, ultrasonic methods, hot air flow methods, vibration methods, etc. The mechanical method is currently the most widely used, and it is also a relatively economical and feasible method.
[0003] At present, wet winding is often used in composite winding process, that is, the fiber is impregnated with resin and then wound on a core mold through a winding head to make a product. There is no yarn spreading process in the wet winding process. Since the yarn is impregnated with liquid resin, the yarn will spread out under the action of tension after passing through the winding head. The overall winding efficiency of wet winding is low, the quality uniformity is poor, and the process operation environment is poor. The dry winding process is a newer process. At present, the dry winding yarn spreading device needs to have a large tension on the winding fiber to achieve better yarn spreading. Since excessive winding tension will damage the fiber strength, the winding tension needs to be controlled within a certain range during the winding process. Therefore, the overall yarn spreading effect is not good. For this reason, a roller-type yarn spreading tooling is proposed. Summary of the invention
[0004] The utility model aims to provide a roller-type yarn spreading tool to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: it includes a mounting support 1, a yarn guide assembly and a yarn spreading assembly, a roller mounting support 2 is arranged on the side of the mounting support 1 through which the yarn passes, and a yarn guide assembly and a yarn spreading assembly are arranged on the roller mounting support 2 in sequence along the yarn traveling direction, the yarn guide assembly includes a plurality of yarn guide rollers 3 and at least one yarn combining roller 4 arranged behind the yarn guide rollers, which are used for winding and guiding the yarn; the yarn spreading assembly includes a fixed pressure roller 5 and a pressure roller 6, the fixed pressure roller 5 and the pressure roller 6 are arranged in opposition, and the pressure roller 6 can be movably adjusted relative to the fixed pressure roller 5.
[0006] Preferably, the yarn spreading assembly further comprises two clamping bolts 7 and two pressure springs 8, the upper ends of the two clamping bolts 7 are respectively connected and fixed to the two ends of the support shaft of the fixed pressure roller 5, and the two ends of the support shaft of the pressure roller 6 are respectively slidably engaged and installed on the two clamping bolts 7 below the fixed pressure roller 5; the two pressure springs 8 are respectively sleeved on the lower parts of the two clamping bolts 7, the tops of the pressure springs 8 are in contact with the lower sides of the ends of the support shafts of the pressure roller 6, the lower ends of the pressure springs 8 are fixed relative to the clamping bolts 7, and the pressure roller 6 is movably installed below the fixed pressure roller 5 through the clamping bolts 7 and the pressure springs 8.
[0007] Preferably, a threaded section is provided at the lower portion of the clamping bolt 7 and an adjusting nut 9 is installed at the lower end of the threaded section, and the bottom of the pressure spring 8 is in conflict with the adjusting nut 9 .
[0008] Preferably, a limiting structure is further provided on the pressing bolt 7 between the fixed pressure roller 5 and the pressure roller 6 to limit the minimum distance between the fixed pressure roller 5 and the pressure roller 6 .
[0009] Furthermore, the mounting support 1 is provided with a yarn passage 10 passing through the mounting support 1, preferably the yarn passage 10 is provided in the middle position of the mounting support 1; the roller mounting support 2 is fixedly mounted on the yarn passage side of the mounting support 1 by bolts.
[0010] Preferably, an even number of the yarn guide rollers 3 are provided, and the even number of the yarn guide rollers 3 are divided into two groups, upper and lower, and are arranged opposite to each other.
[0011] Furthermore, the number of the yarn guide rollers 3 is 2, 4, 8, 10, 12, 14, 16, 18 or 20, and the number can be set accordingly according to actual processing conditions.
[0012] Compared with the prior art, the utility model adopts the above technical solution and has the following technical effects:
[0013] The yarn spreading tool adopts a dry mechanical winding process, and is composed of a yarn guide roller and a yarn combining roller, a yarn guiding and yarn spreading structure, and cooperates with dry winding to realize an optimized winding layer ply design, which can effectively improve the yarn spreading working stability and forming quality of the yarn, and a pre-tightened pressure roller structure is provided at the rear of the yarn combining roller, and the pressure roller is movably installed through a clamping bolt and a pressure spring, and the yarn spreading processing of the pre-impregnated yarn is realized through the extrusion effect between the fixed pressure roller and the pressure roller. At the same time, during the processing, the elastic pre-tightening force provided by the pressure spring is used to ensure that a constant pressure can be maintained between the fixed pressure roller and the pressure roller during the yarn spreading process, so that the yarn can remain in a stable and controllable state during the overall yarn spreading process, so that the overall yarn spreading work is stable and controllable, which can effectively improve the working stability of the tooling and is beneficial to improving the yarn spreading processing quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1This is a schematic diagram of the overall structure of the left side of the yarn outlet of Example 1 of the utility model;
[0016] Figure 2 This is a schematic diagram of the overall structure of the right side of the yarn outlet of Example 1 of the utility model;
[0017] Figure 3 This is a schematic diagram of the overall structure of the yarn inlet side of Example 1 of the utility model;
[0018] Figure 4 It is a left-side structural schematic diagram of the overall structure of Embodiment 1 of the utility model;
[0019] Figure 5 This is a schematic diagram of the installation structure of the fixed pressure roller and the pressure roller in Example 1 of the utility model.
[0020] Explanation of the accompanying drawings: 1. Mounting support; 2. Roller mounting seat; 3. Yarn guide roller; 4. Yarn combining roller; 5. Fixed pressure roller; 6. Pressure roller; 7. Clamping bolt; 8. Pressure spring; 9. Adjusting nut; 10. Yarn threading port. DETAILED DESCRIPTION
[0021] 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.
[0022] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.
[0023] Example 1
[0024] See also Figure 1-5 The utility model provides a technical solution: a roller-type yarn spreading tool, including a mounting support 1, the mounting support 1 is used for the overall installation support of the work, in order to facilitate the insertion and installation of the yarn, as shown in the attached Figure 3 As shown, the middle of the mounting support 1 is provided with a yarn through hole 10 that passes through the mounting support 1. In order to facilitate the installation and support of the roller structure, as shown in the attached Figure 1 and 2As shown, a roller mounting seat 2 is provided on the side of the mounting seat 1 through which the yarn passes, and the roller mounting seat 2 is fixedly mounted on the mounting seat 1 by bolts.
[0025] In order to facilitate the winding and installation of the yarn, Figure 1 As shown, a yarn guide roller 3 and a yarn combining roller 4 are rotatably installed in sequence at one end of the roller mounting seat 2 near the yarn passing opening 10. Two groups of yarn guide rollers 3 are provided, and each group of yarn guide rollers includes two independent yarn guide rollers 3. Several yarn guide rollers 3 are grouped and rotatably installed at the yarn passing opening 10 of the roller mounting seat 2 in an opposing manner. The yarn combining roller 4 is used for composite support of the yarn. The yarn combining roller 4 is rotatably installed at the middle part of the roller mounting seat 2 through a rotating shaft. The upper parts of the yarn guide roller 3 and the yarn combining roller 4 are wound and installed with yarns, as shown in the attached Figure 4 As shown, the yarn passes through the yarn opening 10, and the two groups of yarns are alternately wound around the upper part of the adjacent yarn guide rollers 3, and the yarns are wound and supported on the upper part of the yarn combining roller 4.
[0026] In order to improve the yarn spreading working stability, a fixed pressure roller 5, a pressure roller 6, a clamping bolt 7 and a pressure spring 8 are arranged at one end of the roller mounting seat 2 far from the yarn passing opening 10. The fixed pressure roller 5 and the pressure roller 6 are rotatably mounted on the roller mounting seat 2 in an opposed manner. Figure 1 As shown, the fixed pressure roller 5 is rotatably mounted on the roller mounting seat 2 through the support shaft, and the number of the clamping bolts 7 is two, and the two clamping bolts 7 are respectively fixed to the two ends of the support shaft of the fixed pressure roller 5, and the upper part of the clamping bolt 7 is a smooth shaft column setting, as shown in the attached Figure 5 As shown, the two ends of the supporting shaft of the pressure roller 6 are respectively slidably fitted on the upper parts of the two clamping bolts 7. There are two pressure springs 8, which are movably mounted on the lower parts of the two clamping bolts 7 respectively. The top of the pressure spring 8 is in conflict with the lower side of the end of the supporting shaft of the pressure roller 6. The pressure roller 6 is movably installed on the lower part of the fixed pressure roller 5 through the clamping bolt 7 and the pressure spring 8. The pre-impregnated yarn is processed by the extrusion effect between the fixed pressure roller 5 and the pressure roller 6. At the same time, during the processing, the elastic preload force provided by the pressure spring 8 ensures that a constant pressure can be maintained between the fixed pressure roller 5 and the pressure roller 6 during the yarn spreading process, so that the yarn can remain in a stable and controllable state during the overall yarn spreading process, thereby making the overall yarn spreading work stable and controllable.
[0027] A threaded section is provided at the lower part of the clamping bolt 7. In order to facilitate the control and adjustment of the roller pressure, an adjusting nut 9 is threadedly installed at the lower end of the clamping bolt 7. The lower part of the pressure spring 8 is in conflict with the adjusting nut 9. By screwing the adjusting nut 9, the compression degree of the pressure spring 8 is changed, thereby realizing the control and adjustment of the clamping pressure between the fixed pressure roller 5 and the pressure roller 6.
[0028] Working principle or structural principle, when working, the yarn is Figure 4The winding installation is carried out in the manner of , and then the adjusting nuts 9 at the lower parts of the two clamping bolts 7 are alternately screwed, and the compression degree of the pressure spring 8 is changed to realize the control and adjustment of the clamping pressure between the fixed pressure roller 5 and the pressure roller 6. During operation, the yarn is guided and transported by the guide roller 3 and supported on the upper part of the yarn combining roller 4. After being supported by the yarn combining roller 4, the yarn enters the pressure gap formed by the fixed pressure roller 5 and the pressure roller 6. Through the clamping action of the fixed pressure roller 5 and the pressure roller 6, the fiber bundles of the yarn are evenly diffused in the width direction and the filament bundles are thinned. Through the extrusion of the fixed pressure roller 5 and the pressure roller 6, the pre-impregnated yarn is spread. At the same time, under the elastic thrust of the pressure spring 8, the tensioning support is used to ensure that the yarn maintains a constant tensioning pressure during the spreading process, so that the yarn remains stable and controllable during the overall spreading process.
[0029] In summary, the yarn spreading tooling adopts a dry mechanical winding process, and is composed of a yarn guide roller 3 and a yarn combining roller 4, a yarn guiding and yarn spreading structure, and cooperates with dry winding to realize an optimized winding layer ply design, which can effectively improve the yarn spreading working stability and forming quality of the yarn, and a pre-tightened pressure roller structure is provided at the rear of the yarn combining roller 4, and the pressure roller 6 is movably installed through a clamping bolt 7 and a pressure spring 8, and the yarn spreading processing of the pre-impregnated yarn is realized through the extrusion effect between the fixed pressure roller 5 and the pressure roller 6. At the same time, during the processing, the elastic pre-tightening force provided by the pressure spring 8 is used to ensure that a constant pressure can be maintained between the fixed pressure roller 5 and the pressure roller 6 during the yarn spreading process, so that the yarn can remain in a stable and controllable state during the overall yarn spreading process, so that the overall yarn spreading work is stable and controllable, which can effectively improve the working stability of the tooling and is beneficial to the improvement of the yarn spreading processing quality.
[0030] Example 2
[0031] On the basis of a roller-type yarn spreading tooling described in Example 1, a structure or design with a limiting function is added to the clamping bolt 7 between the fixed pressure roller 5 and the pressure roller 6 to limit the minimum distance between the fixed pressure roller 5 and the pressure roller 6. The minimum distance is usually the design thickness of the prepreg yarn layer to achieve a better yarn spreading effect. Specifically, one is to install a limiting sleeve on the clamping bolt 7 between the fixed pressure roller 5 and the pressure roller 6; the other is to design the diameter of the clamping bolt 7 between the fixed pressure roller 5 and the pressure roller 6 to gradually increase from bottom to top, so that at the minimum distance control point, the corresponding diameter of the clamping bolt 7 is larger than the aperture of the support shaft hole of the pressure roller 6, so as to prevent the clamping bolt 7 from continuing to move upward under the action of the clamping spring 8.
[0032] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.
Claims
1. A roller-type yarn spreading tool, comprising a mounting support (1), a yarn guide assembly and a yarn spreading assembly, characterized in that: A roller mounting seat (2) is arranged on the yarn outlet side of the mounting support (1); a yarn guide assembly and a yarn spreading assembly are arranged in sequence on the roller mounting seat (2) along the yarn travel direction; the yarn guide assembly comprises a plurality of yarn guide rollers (3) and at least one yarn combining roller (4) arranged behind the yarn guide rollers (3) for winding and guiding the yarn; the yarn spreading assembly comprises a fixed pressure roller (5) and a pressure roller (6); the fixed pressure roller (5) and the pressure roller (6) are arranged in an opposed state, and the pressure roller (6) can be movably adjusted relative to the fixed pressure roller (5).
2. The roller-type yarn spreading tool according to claim 1, characterized in that: The yarn spreading assembly further comprises two clamping bolts (7) and two pressure springs (8), the upper ends of the two clamping bolts (7) are respectively connected and fixed to the two ends of the support shaft of the fixed pressure roller (5), and the two ends of the support shaft of the pressure roller (6) are respectively slidably engaged and installed on the two clamping bolts (7) below the fixed pressure roller (5); the two pressure springs (8) are respectively sleeved on the lower parts of the two clamping bolts (7), the tops of the pressure springs (8) are in contact with the lower sides of the ends of the support shafts of the pressure roller (6), the lower ends of the pressure springs (8) are fixed relative to the clamping bolts (7), and the pressure roller (6) is movably installed below the fixed pressure roller (5) through the clamping bolts (7) and the pressure springs (8).
3. The roller-type yarn spreading tool according to claim 2, characterized in that: The lower part of the clamping bolt (7) is provided with a threaded section and an adjusting nut (9) is installed at the lower end of the threaded section, and the bottom of the pressure spring (8) is in contact with the adjusting nut (9).
4. The roller-type yarn spreading tool according to claim 3, characterized in that: A limiting structure is also provided on the pressing bolt (7) between the fixed pressing roller (5) and the pressing roller (6), for limiting the minimum distance between the fixed pressing roller (5) and the pressing roller (6).
5. The roller-type yarn spreading tool according to claim 1, characterized in that: The mounting support (1) is provided with a yarn passage opening (10) penetrating the mounting support (1); the roller mounting seat (2) is fixedly mounted on the yarn passage side of the mounting support (1) by means of bolts.
6. The roller-type yarn spreading tool according to claim 1, characterized in that: An even number of the yarn guide rollers (3) are provided, and the even number of the yarn guide rollers (3) are divided into two groups, upper and lower, and are arranged in an opposing manner.