Lead mechanism for single-end breaking strength measuring device

Abstract

The utility model relates to a leading mechanism for single yarn breaking strength measuring device, including the cabinet, the right side on the cabinet is provided with the swing bar that realizes up and down swing by the rotation mechanism drive, the upper end rear side of swing bar is fixed with the connecting rod perpendicularly, the cantilever end of connecting rod is fixed with the micro electric push rod of being located at the front side of cabinet perpendicularly laterally, the telescopic rod of micro electric push rod is sheathed with the fixed clamping block fixed with the shell of micro electric push rod, the telescopic rod of micro electric push rod is fixed with the movable clamping block that is used for clamping yarn with fixed clamping block cooperation. This leading mechanism compact structure, the yarn is clamped and taken to the yarn leading, avoids the yarn to slip, guarantees the clamping effect.

Description

Technical Field

[0001] This utility model relates to a lead wire mechanism for a device for measuring the breaking strength of a single yarn. Background Technology

[0002] After yarn spinning, it is usually necessary to measure the breaking strength of the yarn. A single yarn strength tester is a device used in the cotton, wool, linen, and chemical fiber industries to measure the strength, elongation, and stress of a single yarn or filament. Existing single yarn strength testers typically use a miniature cylinder for the yarn clamping mechanism, which complicates the structure of the clamping mechanism and requires an additional air source. Some also use a scissor-like clamping mechanism, but this is prone to yarn breakage. Utility Model Content

[0003] The purpose of this invention is to provide a lead wire mechanism for a single yarn breaking strength measuring device. This lead wire mechanism has a compact structure, which facilitates the clamping of yarn for yarn lead wire, prevents yarn slippage, and ensures clamping effect.

[0004] The technical solution of this utility model is as follows: a lead wire mechanism for a single yarn breaking strength measuring device, including a cabinet, on the right side of the cabinet is a swing rod driven by a rotating mechanism to swing up and down, a connecting rod is vertically fixed to the upper rear side of the swing rod, a miniature electric push rod located at the front side of the cabinet is horizontally and vertically fixed to the cantilever end of the connecting rod, a fixed clamping block is sleeved on the telescopic rod of the miniature electric push rod and fixed to the housing of the miniature electric push rod, and a movable clamping block is fixed on the telescopic rod of the miniature electric push rod and cooperates with the fixed clamping block to clamp the yarn.

[0005] Furthermore, the rotating mechanism includes a stepper motor horizontally mounted inside the cabinet, and the output shaft of the stepper motor is fixed to the lower end of the swing arm.

[0006] Furthermore, the upper part of the cabinet is provided with a wire mounting base that can move laterally. An inclined plate is fixed to the upper front side of the wire mounting base. Guide grooves are arranged at intervals along the horizontal direction on the inclined plate. Wear-resistant plastic parts are arranged in the guide grooves. An upper front protrusion plate and a lower front protrusion plate are arranged on the wire mounting base below the inclined plate. Elastic clamping blocks are arranged at intervals along the horizontal direction on the upper front protrusion plate. Clamping clamping blocks for wire ends to be inserted are arranged at intervals along the horizontal direction on the lower front protrusion plate.

[0007] Furthermore, the upper front protrusion plate is provided with longitudinal mounting cavities at transverse intervals along its upper side. A screw with its front end protruding from the upper front protrusion plate and connected to an elastic clamping block is provided in the longitudinal mounting cavity. A spring is sleeved on the screw with its front end abutting against the front side wall of the longitudinal mounting cavity.

[0008] Furthermore, the lower front convex plate is provided with threaded holes at transverse intervals corresponding to the elastic clamping blocks, and the screw portion on the clamping block is screwed into the threaded holes to form an inlet gap between the clamping block and the lower front convex plate.

[0009] Furthermore, the top of the cabinet is provided with a horizontal sliding groove, the top of the wire mounting base is provided with a sliding part that extends into the horizontal sliding groove, the bottom surface of the sliding part is provided with a rack, and a gear driven by a motor and cooperating with the rack is installed inside the cabinet.

[0010] Furthermore, a wire cutter is fixed on the front right side of the cabinet between the upper and lower front protruding plates. The wire cutter is provided with a clearance recess into which a miniature electric push rod is inserted. The left side of the wire cutter, and both the upper and lower sides of the clearance recess, are provided with clearance grooves for avoiding the yarn. A longitudinal cutter for cutting the yarn is provided in the clearance groove on the upper side. A transverse guide rod for assisting the yarn to enter the clearance groove is provided on the upper left side of the wire cutter.

[0011] Furthermore, an upper vertical groove for guiding yarn is provided on the upper front side of the cabinet and below the yarn mounting base. A clamping mechanism for clamping yarn is provided in the upper vertical groove. A lower vertical groove is provided on the lower front side of the cabinet and is driven to move up and down by a lifting mechanism. A pair of rotatable clamping wheels for clamping yarn are provided at the lower part of the lower vertical groove.

[0012] Compared with the prior art, the present invention has the following advantages: 1. The yarn-leading mechanism has a compact structure. By using a miniature electric push rod to drive the movable clamping block and the fixed clamping block, it not only facilitates the clamping of yarn, but also helps to prevent yarn slippage and ensure the quality of the yarn-leading mechanism.

[0013] 2. A guide rod is installed on the left side of the yarn cutter to facilitate the yarn entering the clearance groove. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a right-side view of the swing arm of this utility model; Figure 3 This is a cross-sectional schematic diagram of the fixed clamping block and the movable clamping block of this utility model; Figure 4 For the present utility model Figure 1 AA section view; Figure 5 This is a cross-sectional view of the clamping block and the lower front protrusion plate of this utility model. Figure 6 This is a schematic diagram of the structure of the tangent of this utility model; In the diagram: 1-Yarn; 10-Cabinet; 11-Transverse Slide; 12-Motor; 13-Gear; 20-Swing Rod; 21-Connecting Rod; 22-Stepper Motor; 30-Miniature Electric Push Rod; 31-Fixed Clamp; 32-Modible Clamp; 40-Thread Mounting Seat; 41-Inclined Plate; 42-Guide Groove; 43-Wear-Resistant Plastic Part; 44-Upper Front Protrusion Plate; 45-Lower Front Protrusion Plate; 46-Sliding Part; 47-Rack; 48-Threaded Hole; 50-Elastic Clamp; 51-Longitudinal Mounting Cavity; 52-Screw; 53-Spring; 60-Pressure Clamp; 70-Thread Cutter; 71-Avoidance Recess; 72-Avoidance Groove; 73-Longitudinal Cutter; 74-Transverse Guide Rod; 80-Upper Vertical Groove; 81-Clamping Mechanism; 90-Slide; 91-Lower Vertical Groove; 92-Clamping Wheel. Detailed Implementation

[0015] To make the above-mentioned features and advantages of this utility model more easily understood, specific embodiments are described below in conjunction with the accompanying drawings, but this utility model is not limited thereto.

[0016] refer to Figures 1 to 6 A lead-lead mechanism for a single yarn breaking strength measuring device includes a cabinet 10. A swing arm 20, driven by a rotating mechanism, is mounted on the right side of the cabinet. A connecting rod 21 is vertically fixed to the upper rear side of the swing arm. A miniature electric push rod 30, located at the front of the cabinet, is horizontally and vertically fixed to the cantilever end of the connecting rod. A fixed clamping block 31, fixed to the housing of the miniature electric push rod, is fitted onto the telescopic rod of the miniature electric push rod. A movable clamping block 32, cooperating with the fixed clamping block, is fixed to the telescopic rod of the miniature electric push rod to clamp the yarn. Thus, by extending and retracting the telescopic rod of the miniature electric push rod, the movable clamping block and the fixed clamping block clamp the yarn 1, and the up-and-down swing of the swing arm leads the yarn in. Both the movable clamping block and the fixed clamping block are made of plastic to better clamp the yarn.

[0017] In this embodiment, the rotating mechanism includes a stepper motor 22 horizontally mounted in the cabinet. The output shaft of the stepper motor is fixed to the lower end of the swing arm. The stepper motor is controlled by the controller to rotate the swing arm and move the angle, thereby leading the yarn from the yarn mounting seat to the clamping and pulling mechanism.

[0018] In this embodiment, the upper part of the cabinet is provided with a horizontally movable yarn mounting base 40. An inclined plate 41 is fixed to the upper front side of the yarn mounting base. Guide grooves 42 are arranged horizontally at intervals on the inclined plate. Wear-resistant plastic parts 43 are fixed in the guide grooves. An upper front protruding plate 44 and a lower front protruding plate 45 are arranged on the yarn mounting base below the inclined plate. Elastic clamping blocks 50 are arranged horizontally at intervals on the upper front protruding plate. Clamping clamping blocks 60 for clamping the yarn ends are arranged horizontally at intervals on the lower front protruding plate. The yarn introduced by the guide groove is clamped in the elastic clamping block by manual operation, and then the lower end of the yarn is clamped in the clamping block by manual operation. This allows the yarn end between the elastic clamping block and the clamping block to be tensioned, and facilitates the subsequent yarn guiding mechanism to clamp and pull the yarn.

[0019] In this embodiment, to achieve lateral movement of the wire mounting base, a transverse slide groove 11 is provided on the top of the cabinet, and a sliding part 46 extending into the transverse slide groove is provided on the top of the wire mounting base. A rack 47 is provided on the bottom surface of the sliding part, and a gear 13 driven by a motor 12 and cooperating with the rack is installed inside the cabinet, thereby achieving lateral movement of the wire mounting base by the gear driving the rack. In another embodiment, an electric cylinder with its end connected to the sliding part can be installed laterally inside the cabinet, thereby driving the wire mounting base to move gradually laterally by the electric cylinder.

[0020] In this embodiment, to clamp the yarn and facilitate its pulling, the upper front convex plate is provided with longitudinal mounting cavities 51 spaced laterally along its upper edge. A screw 52, ​​with its front end extending out of the upper front convex plate and connected to an elastic clamping block, is disposed within each longitudinal mounting cavity. A spring 53, with its front end abutting against the front sidewall of the longitudinal mounting cavity, is fitted onto the screw. By pulling the elastic clamping block outwards, the yarn can be allowed to enter between the elastic clamping block and the upper front convex plate.

[0021] In this embodiment, the lower front convex plate is provided with threaded holes 48 at lateral intervals corresponding to the number of elastic clamping blocks. The screw part on the clamping block is screwed to the threaded hole so that an inlet gap is formed between the clamping block and the lower front convex plate, so that the yarn can be inserted into the inlet gap and can be released from the inlet gap after being clamped by the movable clamping block and the fixed clamping block.

[0022] In this embodiment, a yarn cutter 70 is fixed on the front right side of the cabinet, located between the upper and lower front protruding plates. The yarn cutter has a clearance recess 71 for inserting a miniature electric push rod, so that the miniature electric push rod can clamp the yarn after being inserted into the clearance recess. Clearance grooves 72 for clearing the yarn are provided on the left side of the yarn cutter, above and below the clearance recess. A longitudinal cutter 73 for cutting the yarn is provided in the upper clearance groove. A transverse guide rod 74 for assisting the yarn into the clearance groove is provided on the upper left side of the yarn cutter. The longitudinal cutter can be driven by an electromagnetic mechanism to move back and forth to cut the yarn. By moving the yarn mounting seat one position, the yarn closest to the yarn cutter is guided into the clearance groove by the guide rod, and then cut by the longitudinal cutter.

[0023] In this embodiment, an upper vertical groove 80 for guiding yarn is provided on the upper front side of the cabinet and below the yarn mounting base. A clamping mechanism 81 for clamping the yarn is provided within the upper vertical groove. This clamping mechanism is identical to the miniature electric push rod structure with fixed and movable clamping blocks in the yarn guiding mechanism, thus clamping the yarn. A lower vertical groove 91 is provided on the lower front side of the cabinet, below the upper vertical groove. The lower vertical groove is mounted on a slide 90, which is driven to rise and fall by a lifting mechanism. The lifting mechanism can be a vertical electric cylinder driving the slide or a gear and rack mechanism driven by a motor. A detection sensor for detecting the thrust of the lifting mechanism is provided inside the cabinet. A pair of clamping rollers 92 are provided at the lower part of the slide, abutting each other to clamp the yarn and rotating in opposite directions. One clamping roller is driven by a motor, and the other rotates synchronously and in opposite directions through a gear pair between the shafts of the two clamping rollers.

[0024] In this embodiment, the miniature electric actuator can be from the Gongtu series: 10mm stroke (enhanced upgrade), 12V DC, 32N (3kg) thrust, and 30mm / s speed.

[0025] Working method: First, manually insert a yarn into each guide groove, leaving a certain length. Then, pull the elastic clamp forward to place the yarn between the elastic clamp and the upper front convex plate. Next, insert the end of the yarn into the guide gap between the pressing clamp and the lower front convex plate. During this process, the yarn section between the elastic clamp and the pressing clamp should be kept as taut or straight as possible. Cut off the excess yarn below the pressing clamp.

[0026] The yarn mounting seat moves laterally, moving the yarn to the upper side of the upper vertical groove. Then, the swing arm of the yarn guide mechanism swings upward, allowing the miniature electric push rod to enter the clearance recess of the cutter. Simultaneously, the telescopic rod of the miniature electric push rod retracts (normally, the electric push rod extends), causing the movable clamping block and the fixed clamping block to clamp the yarn. The swing arm swings downward, disengaging the yarn from the clamping block. The swing arm positions the miniature electric push rod under the slide, and the yarn is engaged in a pair of clamping guide wheels. At the same time, the yarn falls into the upper and lower vertical grooves, where the clamping mechanism in the upper vertical groove holds the yarn. The yarn mounting seat moves laterally one position (one position is the center distance between two adjacent elastic clamping blocks), allowing the yarn to enter the cutter and be cut. The lifting mechanism drives the slide to descend, pulling the yarn. After the yarn located between the upper and lower vertical grooves is broken, a pair of clamping wheels rotate, disengaging the yarn located between the clamping wheels. For specific principles and other details, please refer to existing fully automatic single yarn strength testers.

[0027] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws) or a non-detachable fixed connection (e.g., riveting or welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0028] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0029] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0030] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A lead wire mechanism for a single yarn breaking strength measuring device, comprising a cabinet, characterized in that, The right side of the cabinet is equipped with a swing arm that is driven by a rotating mechanism to swing up and down. A connecting rod is vertically fixed to the upper rear side of the swing arm. A miniature electric push rod located on the front side of the cabinet is horizontally and vertically fixed to the cantilever end of the connecting rod. A fixing clamp is sleeved on the telescopic rod of the miniature electric push rod and fixed to the housing of the miniature electric push rod. A movable clamp is fixed on the telescopic rod of the miniature electric push rod and cooperates with the fixing clamp to clamp the yarn.

2. The lead wire mechanism for the single yarn breaking strength measuring device according to claim 1, characterized in that, The rotating mechanism includes a stepper motor horizontally mounted in the cabinet, and the output shaft of the stepper motor is fixed to the lower end of the swing arm.

3. The lead wire mechanism for the single yarn breaking strength measuring device according to claim 1 or 2, characterized in that, The upper part of the cabinet is provided with a wire mounting base that can move laterally. An inclined plate is fixed to the upper front side of the wire mounting base. Guide grooves are arranged at intervals along the horizontal direction on the inclined plate. Wear-resistant plastic parts are arranged in the guide grooves. An upper front protrusion plate and a lower front protrusion plate are arranged on the wire mounting base below the inclined plate. Elastic clamping blocks are arranged at intervals along the horizontal direction on the upper front protrusion plate. Clamping clamping blocks for wire ends to be inserted are arranged at intervals along the horizontal direction on the lower front protrusion plate.

4. The lead wire mechanism for the single yarn breaking strength measuring device according to claim 3, characterized in that, The upper front protrusion plate is provided with longitudinal mounting cavities at transverse intervals along its upper edge. A screw rod with its front end protruding from the upper front protrusion plate and connected to an elastic clamping block is provided in the longitudinal mounting cavity. A spring is sleeved on the screw rod, with its front end abutting against the front side wall of the longitudinal mounting cavity.

5. The lead wire mechanism for the single yarn breaking strength measuring device according to claim 3, characterized in that, The lower front convex plate is provided with threaded holes at transverse intervals corresponding to the elastic clamping blocks. The screw portion on the clamping block is screwed into the threaded holes to form an inlet gap between the clamping block and the lower front convex plate.

6. The lead wire mechanism for the single yarn breaking strength measuring device according to claim 3, characterized in that, The top of the cabinet is provided with a horizontal sliding groove, the top of the wire mounting base is provided with a sliding part that extends into the horizontal sliding groove, the bottom surface of the sliding part is provided with a rack, and a gear driven by a motor and cooperating with the rack is installed inside the cabinet.

7. The lead wire mechanism for the single yarn breaking strength measuring device according to claim 3, characterized in that, A wire cutter is fixed on the front right side of the cabinet between the upper and lower front protruding plates. The wire cutter is provided with a clearance recess into which a miniature electric push rod is inserted. The left side of the wire cutter, and both the upper and lower sides of the clearance recess, are provided with clearance grooves for avoiding the yarn. A longitudinal cutter for cutting the yarn is provided in the clearance groove on the upper side. A transverse guide rod for assisting the yarn to enter the clearance groove is provided on the upper left side of the wire cutter.

8. The lead wire mechanism for the single yarn breaking strength measuring device according to claim 3, characterized in that, The upper front side of the cabinet, below the yarn mounting base, is provided with an upper vertical groove for guiding yarn. A clamping mechanism for clamping yarn is provided in the upper vertical groove. The lower front side of the cabinet is provided with a lower vertical groove located below the upper vertical groove and driven to move up and down by a lifting mechanism. A pair of rotatable clamping wheels for clamping yarn are provided at the bottom of the lower vertical groove.

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