A constant tension spindle for a knitting machine

Abstract

The utility model relates to a constant tension spindle for a braiding machine in the field of spindles, wherein the top surface of the bracket is provided with an opening, the opening is provided with a cycloidal plate, the yarn tube is arranged below the bracket, the yarn tube and the bracket are connected through a connecting tube, the hollow part of the connecting tube is communicated with the opening, the connecting tube and the bracket are fixedly connected, the connecting tube and the yarn tube are connected through a first rotating support, a rotating plate is provided on the cycloidal plate, an axial limiting shaft is provided in the connecting tube, one end of the axial limiting shaft passes through the connecting tube, the opening, the cycloidal plate and the rotating plate, the cycloidal plate and the rotating plate both perform circumferential rotational motion with the connecting tube, a positioning hole is provided on the cycloidal plate, a positioning column for cooperating with the positioning hole is provided on the rotating plate, the upper end of the connecting tube is connected to the bracket through a first torsion spring, the lower end of the first torsion spring is clamped on the connecting tube, a first rail groove is provided on the cycloidal plate, and the upper end of the first torsion spring passes through the opening, the first rail groove and the rotating plate in sequence.

Description

Technical Field

[0001] The utility model relates to the field of spindles, in particular to a constant tension spindle for a braiding machine. Background Art

[0002] During the weaving operation, the performance of the spindle inside the weaving machine will have a direct impact on the weaving efficiency and weaving quality, and this performance is related to the flexibility of the tension and the sensitivity of the locking.

[0003] The main tension force in the spindle is the spring, which is compressed. The spindle pays off the wire, the spring resets, and the spindle reels in. There are still some problems in this process: if a spring with quick reset is used in the spindle, it is easy to cause the flexibility of the tension control in the spindle pays off the wire and the tension fluctuates greatly. If a spring that is easily compressible is used, it is easy to cause the spring reset to be slow and the spindle reels in slowly. Utility Model Content

[0004] The utility model aims to solve the above defects and provide a constant tension spindle for a braiding machine.

[0005] The purpose of the utility model is achieved in the following way: a constant tension spindle for a braiding machine, comprising a bracket and a bobbin, the top surface of the bracket is provided with an opening, a cycloid plate is provided on the opening, the bobbin is arranged below the bracket, the bobbin and the bracket are connected through a connecting tube, the hollow part of the connecting tube is connected with the opening, the connecting tube and the bracket are fixedly connected, the connecting tube and the bobbin are connected through a first rotating support, a rotating plate is provided on the cycloid plate, an axial limiting shaft is provided in the connecting tube, one end of the axial limiting shaft passes through the connecting tube, the opening, the cycloid plate and the rotating plate, the cycloid plate and the rotating plate both perform circumferential rotational motion with the connecting tube, a positioning hole is provided on the cycloid plate, and a positioning hole is provided on the rotating plate for matching with the positioning hole The upper end of the connecting tube is connected to the bracket through a first torsion spring, the lower end of the first torsion spring is clamped on the connecting tube, the cycloid plate is provided with a first rail groove, the upper end of the first torsion spring passes through the opening, the first rail groove and the rotating plate in sequence, the lower end of the connecting tube is connected to the bobbin through a second torsion spring, the upper end of the second torsion spring is clamped on the connecting tube, the bottom surface of the cycloid plate is provided with a lever, the top surface of the bracket is provided with a second rail groove, the lower end of the lever passes through the second rail groove and is moved along the direction of the second torsion spring, a wire outlet hole is provided on the fixed plate, the center of the wire outlet hole is on the same straight line as the center of the bracket, the top surface of the bracket is provided with a first guide wheel, the two ends of the cycloid plate are provided with second guide wheels, and the upper end of the fixed plate is provided with a third guide wheel.

[0006] In the above description, as a further solution, a mounting plate is provided in the middle part of the connecting tube, and the top surface of the mounting plate is provided with a plurality of upper protrusion blocks distributed circumferentially, and an upper gap is provided between adjacent upper protrusion blocks, and the lower end of the first torsion spring is inserted into the upper gap, and the bottom surface of the mounting plate is provided with a plurality of lower protrusion blocks distributed circumferentially, and a lower gap is provided between adjacent lower protrusion blocks, and the upper end of the second torsion spring is inserted into the lower gap.

[0007] In the above description, as a further solution, a fixing rod is provided on the fixing plate, a steering wheel is mounted on the fixing rod, and the fixing rod and the steering wheel are connected via a second rotating support.

[0008] In the above description, as a further solution, the first rotating support member and the second rotating support member are both bearings.

[0009] In the above description, as a further solution, the first rail groove and the second rail groove are both arc grooves.

[0010] In the above description, as a further solution, there are a plurality of positioning holes, and the plurality of positioning holes are circumferentially distributed on the top surface of the cycloid plate.

[0011] In the above description, as a further solution, a keyway is provided on the axial limit shaft, a key body for cooperating with the keyway is provided on the cycloid plate, a nut and a retaining ring are provided on the axial limit shaft, and a retaining groove for cooperating with the retaining ring is provided on the inner wall of the connecting tube.

[0012] The beneficial effects produced by the utility model are as follows: the constant tension spindle for a braiding machine forms a double torsion spring device by arranging a first torsion spring and a second torsion spring, thereby realizing a fine-tuning function, accurately regulating the tension, and improving the efficiency of wire winding and releasing; by arranging a first guide wheel, a second guide wheel and a third guide wheel, the influence of swinging on the wire is reduced; by arranging the center of the wire outlet hole and the center of the bracket to be on the same straight line, the flexibility of back-twisting and self-rotation is realized, thereby improving the wire braiding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure in the first direction of a constant tension spindle for a braiding machine of the utility model;

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure in the second direction of a constant tension spindle for a braiding machine according to the utility model;

[0015] Figure 3 It is a cross-sectional view of a constant tension spindle for a braiding machine according to the utility model;

[0016] Figure 4 For this utility model Figure 3 A is a partial enlarged schematic diagram;

[0017] Figure 5 It is a cross-sectional view of a connecting tube and a cycloid plate in a constant tension spindle for a braiding machine of the utility model;

[0018] In the figure: 1- bracket, 2- bobbin, 3- cycloidal plate, 4- opening, 5- connecting tube, 6- first rotating support, 7- rotating plate, 8- axial limiting shaft, 9- positioning hole, 10- positioning column, 11- first torsion spring, 12- first rail groove, 13- lever, 14- second rail groove, 15- mounting plate, 16- upper protrusion block, 17- upper gap, 18- lower protrusion block, 19- lower gap, 20- fixing plate, 21- fixing rod, 22- second rotating support, 23- keyway, 24- key body, 25- nut, 26- slot, 27- steering wheel, 28- second torsion spring, 29- clamping plate, 30- outlet hole, 31- first guide wheel, 32- second guide wheel, 33- third guide wheel. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meanings of "several" and "multiple" are two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] See also Figure 1-5 A constant tension spindle for a braiding machine is specifically implemented, comprising a bracket 1 and a bobbin 2, wherein the top surface of the bracket 1 is provided with an opening 4, and the opening 4 is provided with a cycloidal plate 3, which is a swinging member for controlling the tensioning effect of the spindle, and the bobbin 2 is arranged below the bracket 1, and the bobbin 2 is connected to the bracket 1 through a connecting tube 5, and the hollow part of the connecting tube 5 is connected to the opening 4;

[0022] The connecting tube 5 is fixedly connected to the bracket 1, and the connecting tube 5 and the bracket 1 are relatively stationary. The connecting tube 5 and the bobbin 2 are connected via a first rotating support 6, and the connecting tube 5 and the bobbin 2 can rotate circumferentially with each other. A rotating plate 7 is provided on the cycloid plate 3, and an axial limiting shaft 8 is provided in the connecting tube 5. One end of the axial limiting shaft 8 passes through the connecting tube 5, the opening 4, the cycloid plate 3 and the rotating plate 7. The cycloid plate 3 and the rotating plate 7 both rotate circumferentially with the connecting tube 5, which is convenient for adjusting the tension and controlling the locking force.

[0023] A positioning hole 9 is provided on the cycloid plate 3, and a positioning column 10 for cooperating with the positioning hole 9 is provided on the rotating plate 7. After the tension is adjusted by using the rotating plate 7, the positioning column 10 is matched with the positioning hole 9, so that the rotating plate 7 and the cycloid plate 3 remain relatively still, and the setting of the constant tension is completed. The operation is simple, and it is suitable for all types of spindles to adjust specific tensions.

[0024] The upper end of the connecting tube 5 is connected to the bracket 1 through the first torsion spring 11, the lower end of the first torsion spring 11 is clamped on the connecting tube 5, the cycloid plate 3 is provided with a first rail groove 12, the upper end of the first torsion spring 11 passes through the opening 4, the first rail groove 12 and the rotating plate 7 in sequence, and the first rail groove 12 is the activity space range of the upper end of the first torsion spring 11;

[0025] The lower end of the connecting tube 5 is connected to the bobbin 2 via a second torsion spring 28, the upper end of the second torsion spring 28 is clamped on the connecting tube 5, a lever 13 is provided on the bottom surface of the cycloid plate 3, a second track groove 14 is provided on the top surface of the bracket 1, the lower end of the lever 13 passes through the second track groove 14 and is moved along the direction of the second torsion spring 28, a fixing plate 20 is provided on the top surface of the bracket 1, a wire outlet hole 30 is provided on the fixing plate 20, the center of the wire outlet hole 30 is on the same straight line as the center of the bracket 1, a first guide wheel 31 is provided on the top surface of the bracket 1, second guide wheels 32 are provided at both ends of the cycloid plate, and a third guide wheel 33 is provided on the upper end of the fixing plate.

[0026] In the embodiment of the utility model, the bracket 1 and the connecting tube 5 remain relatively stationary, and the bobbin 2 can undergo relative rotational motion;

[0027] The process of adjusting the spindle tension in the embodiment of the utility model is as follows: firstly, the rotating plate 7 is rotated, the rotating plate 7 moves around the axial limit shaft 8, the first torsion spring 11 is deformed, and then the rotating plate 7 is fixed to the cycloid plate 3, so that the cycloid plate 3 has a constant tension;

[0028] The operation process of releasing the thread in the embodiment of the utility model is as follows: the swing plate is rotated, the swing plate drives the lever 13, the lever 13 moves the second torsion spring 28, the second torsion spring 28 loosens the bobbin 2, and the bobbin 2 can rotate to release the thread;

[0029] The operation process of restoring the brake in the embodiment of the utility model is as follows: releasing the swing plate, the swing plate drives the lever 13 to leave the second torsion spring 28, the second torsion spring 28 holds the bobbin 2 tightly, and the bobbin 2 no longer releases the thread.

[0030] Specifically, a mounting plate 15 is provided in the middle of the connecting tube 5, and a top surface of the mounting plate 15 is provided with a plurality of upper protrusions 16 distributed circumferentially, and upper gaps 17 are provided between adjacent upper protrusions 16. The upper gaps 17 are provided to facilitate the lower end of the first torsion spring 11 to be inserted into the upper gaps 17 at different positions, thereby improving the flexibility of installing the first torsion spring 11; a plurality of lower protrusions 18 are provided on the bottom surface of the mounting plate 15, and a lower gap 19 is provided between adjacent lower protrusions 18. The upper end of the second torsion spring 28 is inserted into the lower gap 19. The lower gaps 19 are provided to facilitate the upper end of the second torsion spring 28 to be inserted into the lower gaps 19 at different positions, thereby improving the flexibility of installing the second torsion spring 28.

[0031] In this embodiment, a fixing rod is provided on the fixing plate 20 , a steering wheel 27 is mounted on the fixing rod, and the fixing rod and the steering wheel 27 are connected via a second rotating support member 22 .

[0032] By arranging a second rotating support 22 between the fixed rod and the steering wheel 27, the problem that the wire is prone to relative sliding on the steering wheel 27, causing the wire to be non-centripetal, is solved. Not only is the wire prone to wear, but the appearance of the braided wire is not neat and beautiful. The friction between the steering wheel 27 and the wire is greatly reduced, the weaving quality of the braided wire is improved, and the braided wire is ensured to be neat and beautiful.

[0033] Specifically, the first rotating support 6 and the second rotating support 22 are both bearings.

[0034] Specifically, the first rail groove 12 and the second rail groove 14 are both arc grooves.

[0035] In this embodiment, a plurality of positioning holes 9 are provided, and the plurality of positioning holes 9 are circumferentially distributed on the top surface of the cycloid plate 3. By providing a plurality of positioning holes 9, it is convenient to insert the positioning column 10 into the positioning hole 9 at the most suitable position, thereby improving the installation flexibility of the rotating plate 7 and the cycloid plate 3.

[0036] In this embodiment, a keyway 23 is provided on the axial limiting shaft 8, and a key body 24 for cooperating with the keyway 23 is provided on the cycloid plate 3. The cooperation between the keyway 23 and the key body 24 facilitates the axial limiting shaft 8 to fix the cycloid plate 3; a nut 25 and a retaining ring are provided on the axial limiting shaft 8, and the setting of the nut 25 facilitates the fixing of the rotating plate 7; a retaining groove 26 for cooperating with the retaining ring is provided on the inner wall of the connecting tube 5, and the cooperation between the retaining ring and the retaining groove 26 limits the axial deviation of the axial limiting shaft 8, thereby ensuring the structural stability of the spindle.

[0037] The above contents are further detailed descriptions of the present invention in combination with specific further embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as the protection scope of the present invention.

Claims

1. A constant tension spindle for a braiding machine, comprising a bracket and a bobbin, characterized in that: The top surface of the bracket is provided with an opening, and a cycloid plate is provided on the opening. The bobbin is arranged below the bracket. The bobbin and the bracket are connected by a connecting tube. The hollow part of the connecting tube is in conduction with the opening. The connecting tube and the bracket are fixedly connected. The connecting tube and the bobbin are connected by a first rotating support. A rotating plate is provided on the cycloid plate. An axial limiting shaft is provided in the connecting tube. One end of the axial limiting shaft passes through the connecting tube, the opening, the cycloid plate and the rotating plate. The cycloid plate and the rotating plate both perform circumferential rotational motion with the connecting tube. A positioning hole is provided on the cycloid plate. A positioning column for cooperating with the positioning hole is provided on the rotating plate. The upper end of the connecting tube and the bracket are connected by a first torsion spring. The lower end of the first torsion spring is clamped on the connecting cylinder, the first track groove is provided on the cycloid plate, the upper end of the first torsion spring passes through the opening, the first track groove and the rotating plate in sequence, the lower end of the connecting cylinder is connected to the bobbin through the second torsion spring, the upper end of the second torsion spring is clamped on the connecting cylinder, the bottom surface of the cycloid plate is provided with a lever, the top surface of the bracket is provided with a second track groove, the lower end of the lever passes through the second track groove and is moved along the direction of the second torsion spring, the top surface of the bracket is provided with a fixed plate, the fixed plate is provided with a wire outlet hole, the center of the wire outlet hole is on the same straight line with the center of the bracket, the top surface of the bracket is provided with a first guide wheel, the two ends of the cycloid plate are provided with second guide wheels, and the upper end of the fixed plate is provided with a third guide wheel.

2. According to claim 1, a constant tension spindle for a braiding machine is characterized in that: A mounting plate is provided in the middle of the connecting tube, and a plurality of upper protrusion blocks distributed circumferentially are provided on the top surface of the mounting plate, and an upper gap is provided between adjacent upper protrusion blocks, and the lower end of the first torsion spring is inserted into the upper gap; a plurality of lower protrusion blocks distributed circumferentially are provided on the bottom surface of the mounting plate, and a lower gap is provided between adjacent lower protrusion blocks, and the upper end of the second torsion spring is inserted into the lower gap.

3. A constant tension spindle for a braiding machine according to claim 1 or 2, characterized in that: The fixing plate is provided with a fixing rod, a steering wheel is sleeved on the fixing rod, and the fixing rod and the steering wheel are connected via a second rotating support.

4. A constant tension spindle for a braiding machine according to claim 3, characterized in that: The first rotating support member and the second rotating support member are both bearings.

5. A constant tension spindle for a braiding machine according to claim 1 or 2, characterized in that: The first rail groove and the second rail groove are both arc grooves.

6. A constant tension spindle for a braiding machine according to claim 1 or 2, characterized in that: There are a plurality of positioning holes, which are circumferentially distributed on the top surface of the cycloid plate.

7. A constant tension spindle for a braiding machine according to claim 1 or 2, characterized in that: The axial limiting shaft is provided with a keyway, the cycloid plate is provided with a key body for cooperating with the keyway, the axial limiting shaft is provided with a nut and a clamping ring, and the inner wall of the connecting cylinder is provided with a clamping groove for cooperating with the clamping ring.

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