Polypropylene monofilament tensile test device

Abstract

The utility model belongs to the technical field of fiber monofilament quality detection, and particularly relates to a polypropylene monofilament stretching test device which comprises a base, a tension test device and a tension test device, the stretching unit comprises a motor, a threaded rod, an auxiliary rod, a moving block, an auxiliary moving block, a cross beam and a top plate, the output end of the motor is fixedly connected with one end of the threaded rod, the other end of the threaded rod is rotatably connected with the top plate, the two ends of the auxiliary rod are connected with the top plate and the base respectively, the moving block is slidably connected with the threaded rod, and the auxiliary moving block is slidably connected with the auxiliary rod; the cross beam connects the moving block with the auxiliary moving block; the pressure sensor is fixed below the cross beam; each fixing unit comprises a fixing column, a guide wheel, a connecting piece and a first pressing plate, an inward-concave spiral groove is formed in the surface of the peripheral side of each fixing column, the two ends of each fixing column are connected with the corresponding connecting piece and the corresponding guide wheel respectively, and the first pressing plates are detachably connected with the fixing columns. The device can fix the two ends of the monofilament and prevent the monofilament from falling off.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fiber monofilament quality detection, specifically relates to a polypropylene monofilament tensile testing device. BACKGROUND

[0002] Polypropylene fiber is a synthetic fiber obtained by polymerization of propylene, and its fiber strength needs to meet certain indicators to be used for subsequent processing and manufacturing.

[0003] The existing polypropylene monofilament tensile testing device usually uses a clamp tool to fix both ends of the monofilament. For example, the utility model patent with application number 202221480371 discloses a tensile sample device for continuously preparing modified polypropylene monofilament fiber. The device fixes the polypropylene monofilament at both ends by clamping blocks similar to clamps. This fixing method can easily cause the monofilament to fall off during the stretching stage and cannot be effectively fixed. UTILITY MODEL CONTENTS

[0004] The utility model aims to solve the problem of ineffective fixing of polypropylene monofilament in the background technology mentioned above. A new polypropylene monofilament tensile testing device is proposed, which can effectively fix the polypropylene monofilament and prevent it from falling off.

[0005] To achieve the above-mentioned purpose, a polypropylene monofilament tensile testing device is adopted. The polypropylene monofilament tensile testing device comprises:

[0006] A base is provided at the top center of the base.

[0007] A stretching unit comprises a motor, a threaded rod, an auxiliary rod, a moving block, an auxiliary moving block, a crossbeam, and a top plate. The output end of the motor is fixedly connected to one end of the threaded rod. The other end of the threaded rod is rotatably connected to the top plate. The two ends of the auxiliary rod are connected to the top plate and the base, respectively. The moving block is slidably connected to the threaded rod. The auxiliary moving block is slidably connected to the auxiliary rod. The crossbeam connects the moving block and the auxiliary moving block.

[0008] A pressure sensor is fixed below the crossbeam.

[0009] Two fixing units comprise a fixing column, a guide wheel, a connecting piece, and a first pressing plate. The fixing column is provided with a spiral groove recessed inward on the lateral surface. The two ends of the fixing column are connected to the connecting piece and the guide wheel, respectively. The first pressing plate is detachably connected to the fixing column.

[0010] In the technical scheme, the stretching unit drives the cross beam to move upward to stretch the monofilament; the pressure sensor is used to monitor the tension in real time; the fixing unit is used to fix the two ends of the monofilament, wherein the monofilament is wound in the spiral groove, and the first pressing plate is buckled with the fixing column to press and fix the monofilament.

[0011] Further, the fixing column comprises a column body, a push rod, a first spring and a button, the column body is provided with an "L"-shaped through hole, two limiting rings are arranged in the "L"-shaped through hole, the diameter of the middle part of the push rod is larger than the diameter of the two ends of the push rod, the middle part of the push rod is located between the two limiting rings, one end of the push rod partially extends out of the "L"-shaped through hole and is fixedly connected with the button, the first spring is sleeved on the other end of the push rod, and the two ends of the first spring are respectively abutted against the limiting ring away from the button and the middle part of the push rod.

[0012] In the technical scheme, the button can be pressed to push the push rod to slide inward to push and take out the first pressing plate, and the button is reset by the first spring.

[0013] Further, the first pressing plate comprises an arc-shaped plate and two plug-in pieces, the two plug-in pieces are symmetrically arranged on the two sides of the arc-shaped plate, the plug-in piece comprises a plug-in plate, a clamping block and a spring piece, the clamping block is fixed on one side of the plug-in plate, one end of the spring piece is fixed on the other side of the plug-in plate, and the spring piece is inclinedly arranged relative to the plug-in plate, and the inner side of the arc-shaped plate is provided with a pressing block corresponding to the spiral groove.

[0014] In the technical scheme, the arc-shaped plate can be attached to the surface of the column body, the pressing block extends into the spiral groove to press and fix the monofilament in the spiral groove, and when the plug-in piece is inserted into the "L"-shaped through hole of the fixing column, the clamping block can be pushed and naturally clamped by the pushing force of the spring piece.

[0015] Further, the first pressing plate further comprises a magnetic block, and the magnetic block is fixed on the top of the arc-shaped plate.

[0016] In the technical scheme, the first pressing plate can be fixed by the magnetic block, and the first pressing plate is fixed on the polypropylene monofilament stretching test device, which is convenient to use.

[0017] Further, the polypropylene monofilament stretching test device further comprises a second fixing unit, the second fixing unit comprises a cap body, a second pressing plate, a base body and a second spring, the base body is provided with a "cross"-shaped through hole, the cap body is fixedly connected with the second pressing plate, the second pressing plate passes through the "cross"-shaped through hole, the second spring connects the second pressing plate and the base body, and the cap body and the base body are in sliding fit.

[0018] In the technical scheme, the two ends of the polypropylene monofilament can be further fixed by the second fixing unit, and the operator can use it conveniently.

[0019] Further, the polypropylene monofilament tensile testing device further comprises two protective covers, which are respectively sleeved on the outer sides of the threaded rod and the auxiliary rod.

[0020] In the above technical solution, the device can be protected, and a functional component can be fixed, such as magnetic attraction fixation of the first pressing plate.

[0021] Further, the polypropylene monofilament tensile testing device further comprises two protective covers, which are respectively sleeved on the outer sides of the threaded rod and the auxiliary rod.

[0022] In the above technical solution, when the moving block passes through the two limit sensors, the device can be automatically stopped, thereby protecting the device.

[0023] Further, the two fixing units are located on the same vertical line.

[0024] In the above technical solution, the monofilament and the tension are in the same direction, thereby ensuring the accuracy of the test.

[0025] Further, the two fixing units are respectively detachably connected with the mounting seat and the pressure sensor.

[0026] The utility model discloses the advantages are as follows:

[0027] 1. The utility model discloses a fixing unit, and the first pressing plate is buckled with the fixed column, and the monofilament in the spiral groove is extruded and fixed to prevent the monofilament from falling off.

[0028] 2. The utility model discloses a second fixing unit, and only needs to complete the pressing action to realize the preliminary fixation of the monofilament, and the subsequent monofilament winding operation in the spiral groove can be facilitated through the preliminary fixation of the monofilament, thereby saving manpower. DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the premise of the provided drawings.

[0030] Figure 1 It is a structural schematic view of the polypropylene monofilament tensile testing device of the utility model;

[0031] Figure 2 It is a partial structure perspective view of the polypropylene monofilament tensile testing device of the utility model;

[0032] Figure 3It is the structural schematic view of fixed column of the utility model;

[0033] Figure 4 It is the enlarged view of "A" part of the utility model;

[0034] Figure 5 It is the front view of first pressing plate of the utility model;

[0035] Figure 6 It is the side view of first pressing plate of the utility model;

[0036] Figure 7 It is the structural schematic view of plug-in part of the utility model;

[0037] Figure 8 It is the structural schematic view of second fixed unit of the utility model.

[0038] Illustration: 1, base, 2, stretching unit, 3, pressure sensor, 4, fixed unit, 5, second fixed unit, 6, protective cover, 7, limit sensor, 101, mounting seat, 201, motor, 202, threaded rod, 203, auxiliary rod, 204, moving block, 205, auxiliary moving block, 206, crossbeam, 207, top plate, 401, fixed column, 402, guide wheel, 403, connecting piece, 404, first pressing plate, 405, spiral groove, 406, column body, 407, push rod, 408, first spring, 409, button, 410, "L" shaped through hole, 411, limit ring, 412, arc plate, 413, plug-in plate, 414, clamping block, 415, elastic sheet, 416, extrusion block, 417, magnetic block, 501, cap body, 502, second pressing plate, 503, base body, 504, second spring, 505, "X" shaped through hole. DETAILED DESCRIPTION

[0039] In order to make the person skilled in the art better understand the utility model scheme, the technical scheme in the embodiment of the utility model will be described clearly and completely in the embodiment of the utility model below, obviously, the described embodiment is only a part of the embodiment of the utility model but not all the embodiments, based on the embodiment of the utility model, the person skilled in the art obtains all other embodiments without creative labor, which belongs to the protection scope of the utility model.

[0040] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown based on the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0041] As shown in Figure 1 and Figure 2 , a polypropylene monofilament tensile testing device is composed of a base 1, a stretching unit 2, a pressure sensor 3 and two fixing units 4, wherein the base is provided with a mounting seat 101 at the center of the top, and a mounting threaded hole is arranged at the center of the mounting seat.

[0042] The stretching unit is composed of a motor 201, a threaded rod 202, an auxiliary rod 203, a moving block 204, an auxiliary moving block 205, a crossbeam 206 and a top plate 207, wherein the motor is located in the base, the output end of the motor is fixedly connected with one end of the threaded rod, the other end of the threaded rod is rotatably connected with the top plate, the two ends of the auxiliary rod are connected with the top plate and the base respectively, the moving block is slidably connected with the threaded rod, the auxiliary moving block is slidably connected with the auxiliary rod, the crossbeam connects the moving block and the auxiliary moving block, and the threaded rod and the auxiliary rod are symmetrically arranged on the two sides of the mounting seat.

[0043] The pressure sensor is fixed below the crossbeam.

[0044] The fixing unit comprises a fixing column 401, a guide wheel 402, a connecting piece 403 and a first pressing plate 404, the circumferential surface of the fixing column is provided with an inwardly recessed spiral groove 405, the two ends of the fixing column are connected with the connecting piece and the guide wheel respectively, and the first pressing plate is detachably connected with the fixing column.

[0045] As shown in Figure 3 and Figure 4 , in one embodiment, the fixing column is composed of a column body 406, a push rod 407, a first spring 408 and a button 409, wherein an "L"-shaped through hole 410 is arranged in the fixing column body, two limiting rings 411 are arranged in the "L"-shaped through hole, the push rod has a variable diameter structure, the diameter of the middle part of the push rod is larger than the diameter of the two ends of the push rod, the middle part of the push rod is located between the two limiting rings, one end of the push rod partially extends out of the "L"-shaped through hole and is fixedly connected with the button, the first spring is sleeved on the other end of the push rod, and the two ends of the first spring abut against the limiting ring away from the button and the middle part of the push rod respectively.

[0046] As shown in Figure 5 , Figure 6 and Figure 7As shown, in one embodiment, the first pressure plate consists of an arc-shaped plate 412 and two plug-in components, wherein the two plug-in components are symmetrically arranged on both sides of the arc-shaped plate. Each plug-in component includes a plug-in plate 413, a locking block 414, and a spring piece 415. The locking block is fixed to one side of the plug-in plate, and one end of the spring piece is fixed to the other side of the plug-in plate. The spring piece is inclined relative to the plug-in plate. The inner side of the arc-shaped plate is provided with a pressing block 416 corresponding to the spiral groove.

[0047] In one embodiment, the first pressure plate is further provided with a magnetic block 417, which is fixed to the top of the arc-shaped plate.

[0048] like Figure 8 As shown, in one embodiment, the polypropylene monofilament tensile testing device is further provided with a second fixing unit 5. The second fixing unit consists of a cap body 501, a second pressure plate 502, a base body 503, and a second spring 504. The base body is provided with a cross-shaped through hole 505. The cap body is fixedly connected to the second pressure plate, the second pressure plate passes through the cross-shaped through hole, and the second spring connects the second pressure plate and the base body. The cap body and the base body are slidably fitted together.

[0049] In one embodiment, the polypropylene monofilament tensile testing device is further provided with two protective covers 6, which are respectively fitted over the threaded rod and the auxiliary rod. The protective covers can be made of iron and are used to fix the first pressure plate.

[0050] In one embodiment, the polypropylene monofilament tensile testing device is further provided with two limit sensors 7, which are disposed inside a protective cover.

[0051] In one embodiment, the two fixed units are located on the same vertical line.

[0052] In one embodiment, the two fixing units are detachably connected to the mounting base and the pressure sensor, respectively, and the connection can be made using a bolt and nut structure.

[0053] The working principle and process of this utility model:

[0054] Press down on the cap body to move the second pressure plate away from the top wall of the base. Pass the monofilament through the cross-shaped through hole between the second pressure plate and the top wall of the base. Stop pressing down on the cap body. The second spring will press the second pressure plate up against the top wall of the base, thus initially fixing the monofilament.

[0055] The monofilament is wound in the spiral groove and passes through the guide wheel. The two plugs of the first pressure plate are inserted into the "L"-shaped through holes on both sides of the column. The arc plate is in contact with the peripheral surface of the main body. The extrusion block on the arc plate is embedded in the spiral groove to extrude and fix the monofilament. When the plug is inserted to the bottom, the spring plate pushes the locking block to move closer to the button, thereby fixing the first pressure plate.

[0056] When the monofilament is fixed on the upper and lower two fixed units, the motor is started, the motor drives the threaded rod to rotate, and under the action of the lead screw structure, the moving block moves up to pull the monofilament for testing, at this time, the tensile force is monitored and displayed through the pressure sensor.

[0057] Finally, it should be noted that the present embodiment is only used to illustrate the present application and does not limit the scope of the present application. In addition, it should be understood that after reading the content taught by the present application, those skilled in the art can make various changes or modifications to the present application, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims

1. A polypropylene monofilament tensile testing device characterized by: The polypropylene monofilament tensile testing device comprises a base (1) provided with a mounting seat (101) at the center of the top thereof; A stretching unit (2) comprising a motor (201), a threaded rod (202), an auxiliary rod (203), a moving block (204), an auxiliary moving block (205), a crossbeam (206) and a top plate (207), the output end of the motor is fixedly connected with one end of the threaded rod, the other end of the threaded rod is rotatably connected with the top plate, the two ends of the auxiliary rod are connected with the top plate and the base respectively, the moving block is slidably connected with the threaded rod, the auxiliary moving block is slidably connected with the auxiliary rod, and the crossbeam connects the moving block and the auxiliary moving block. A pressure sensor (3) is fixed below the crossbeam; Two fixing units (4) comprising a fixing column (401), a guide wheel (402), a connecting piece (403) and a first pressing plate (404), the fixing column is provided with a spiral groove (405) recessed inward on the lateral surface thereof, the two ends of the fixing column are connected with the connecting piece and the guide wheel respectively, and the first pressing plate is detachably connected with the fixing column.

2. The polypropylene monofilament tensile testing device of claim 1, wherein: The fixing column comprises a column body (406), a push rod (407), a first spring (408) and a button (409), an "L"-shaped through hole (410) is arranged in the column body, two limiting rings (411) are arranged in the "L"-shaped through hole, the diameter of the middle part of the push rod is greater than the diameter of the two ends of the push rod, the middle part of the push rod is located between the two limiting rings, one end of the push rod partially extends out of the "L"-shaped through hole and is fixedly connected with the button, the first spring is sleeved on the other end of the push rod, and the two ends of the first spring are respectively abutted against the limiting ring away from the button and the middle part of the push rod.

3. The polypropylene monofilament tensile testing device of claim 1, wherein: The first pressing plate comprises an arc-shaped plate (412) and two plug-in pieces, the two plug-in pieces are symmetrically arranged on the two sides of the arc-shaped plate, the plug-in piece comprises a plug-in plate (413), a clamping block (414) and a spring piece (415), the clamping block is fixed on one side of the plug-in plate, one end of the spring piece is fixed on the other side of the plug-in plate, the spring piece is arranged obliquely relative to the plug-in plate, and the inner side of the arc-shaped plate is provided with a pressing block (416) corresponding to the spiral groove.

4. The polypropylene monofilament tensile testing device of claim 3, wherein: The first pressing plate further comprises a magnetic block (417) fixed on the top of the arc-shaped plate.

5. The polypropylene monofilament tensile testing device of claim 1, wherein: The polypropylene monofilament tensile testing device further comprises a second fixing unit (5), the second fixing unit comprises a cap body (501), a second pressing plate (502), a base body (503) and a second spring (504), the base body is provided with a "cross"-shaped through hole (505), the cap body is fixedly connected with the second pressing plate, the second pressing plate passes through the "cross"-shaped through hole, the second spring connects the second pressing plate and the base body, and the cap body and the base body are in sliding fit.

6. The polypropylene monofilament tensile testing device of claim 1, wherein: The polypropylene monofilament tensile testing device further comprises two protective covers (6) sleeved on the outer portions of the threaded rod and the auxiliary rod respectively.

7. The polypropylene monofilament tensile testing device of claim 6, wherein: The polypropylene monofilament tensile testing device further comprises two limiting sensors (7) arranged in the protective covers.

8. The polypropylene monofilament tensile testing device of claim 1, wherein: The two fixing units are located on the same vertical line.

9. The polypropylene monofilament tensile testing device of claim 1, wherein: The two fixing units are respectively detachably connected with the mounting seat and the pressure sensor.

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