Plastic flat wire tension test clamp

Abstract

The utility model belongs to the technical field of clamps, and particularly relates to a plastic flat wire tension test clamp. An air cylinder installation seat is arranged on the side face of the upper end of a C-shaped support, a first through hole is formed in the center of the air cylinder installation seat, a clamp installation plate is arranged on the side face of the lower end of the C-shaped support, a second through hole is formed in the side face of the lower end of the C-shaped support, a groove is formed in the cambered surface of the C-shaped support, and the first through hole and the second through hole are communicated with the groove. The connecting seat is arranged at the top end of the C-shaped bracket; the cylinder is mounted on the cylinder mounting seat, and a cylinder piston rod penetrates through the first through hole; the fixed clamping block is arranged on the outer side of the clamp mounting plate; the movable clamping block is arranged on the inner side of the clamp mounting plate and provided with a connecting column, and the connecting column penetrates through the second through hole; the middle of the connecting rod is hinged to the C-shaped support, and the two ends of the connecting rod are hinged to the piston rod and the connecting column respectively. The clamp is used for solving the technical problems that an existing clamp driven and clamped by a mechanical structure is inconvenient to use, and clamping force is difficult to control.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamps, and in particular relates to a plastic flat wire tensile test clamp. Background Art

[0002] Plastic flat yarn generally refers to narrow strips cut from films made of materials such as PE, PP, or PET. Plastic flat yarn is commonly used in weaving geotextiles and the tufted base fabric for artificial turf. The quality of plastic flat yarn is closely related to the quality of the woven fabrics, so plastic flat yarn is subjected to tensile testing before weaving to determine its tensile strength.

[0003] A typical tensile test involves clamping a plastic flat wire at each end with two sets of clamps. The clamps are then pulled apart to measure the tensile force required to deform or break the wire. However, the movable parts of existing clamps are typically clamped by rotating a screw. This mechanical structure results in a slow clamping and loosening process, and it's difficult to control the clamping force, which can affect test results. (If the clamping force is too high, the sharp corners of the clamps can break the wire; if the clamping force is too low, the wire can break free from the clamp.) Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the existing technology and provide a plastic flat wire tensile test fixture for solving the technical problems that the existing mechanical structure driven clamping fixture is inconvenient to use and difficult to control the clamping force.

[0005] The utility model solves the above technical problems with the following technical solutions: A plastic flat wire tensile test fixture comprising:

[0006] A C-shaped bracket, wherein the upper end side surface of the C-shaped bracket is provided with a cylinder mounting seat perpendicular to the C-shaped bracket, a first through hole is opened in the center of the cylinder mounting seat, a clamp mounting plate is provided on the lower end side surface of the C-shaped bracket, and a second through hole is opened on the lower end side surface of the C-shaped bracket, and a groove is opened on the arc surface of the C-shaped bracket, and the first through hole and the second through hole are connected to the groove;

[0007] A connecting seat, the connecting seat being arranged at the top end of the C-shaped bracket;

[0008] a cylinder, the cylinder being mounted on the cylinder mounting seat, and the piston rod of the cylinder passing through the first through hole;

[0009] A fixed clamping block, the fixed clamping block being arranged on the outside of the fixture mounting plate;

[0010] a movable clamping block, the movable clamping block being arranged on the inner side of the clamp mounting plate, and a connecting column being provided on a side of the movable clamping block facing the C-shaped bracket, the connecting column passing through the second through hole;

[0011] A connecting rod is arranged in the groove, and the middle part of the connecting rod is hinged to the C-shaped bracket, and the two ends of the connecting rod are respectively hinged to the piston rod and the connecting column.

[0012] The utility model first uses a cylinder as a power source. The cylinder moves quickly and the output force can be controlled by adjusting the air pressure of the cylinder. In this way, combined with the connecting rod structure, the cylinder can control the movement of the movable clamp and the clamping force.

[0013] Furthermore: an arc-shaped groove is provided on the outer side surface of the fixing clamping block.

[0014] The beneficial effect of adopting this step is: the arc groove is used to place the plastic flat wire. After the arc groove is formed, one end of the plastic flat wire is clamped between the fixed clamping block and the movable clamping block, and the remaining plastic flat wire will wrap around the arc groove, increasing the contact area with the clamping block, changing the direction of the force, and improving the clamping stability of the plastic flat wire in the clamp.

[0015] Furthermore, guide posts are provided at the upper and lower ends of the fixed clamping block. The guide posts are inclined cones, and the guide post at the upper end is inclined upward, while the guide post at the lower end is inclined downward.

[0016] The beneficial effect of adopting this step is that the guide post is used to guide the plastic flat wire into the arc groove.

[0017] Furthermore, a flexible cushion layer is provided on one side of the fixed clamping block facing the movable clamping block and on one side of the movable clamping block facing the fixed clamping block.

[0018] Beneficial effects of this step: The flexible cushion layer is used to increase the contact area with the plastic flat wire and improve the firmness of the clamping.

[0019] Furthermore: a positioning boss is provided on the top surface of the connecting seat.

[0020] The beneficial effect of adopting this step is that the positioning boss is for facilitating connection with the tensioning device to ensure that the straightened plastic flat wire is in a vertical state.

[0021] Furthermore: a spring is sleeved on the connecting column, and the spring is located in the groove.

[0022] The beneficial effect of adopting this step is: the spring is used to help the movable clamp to reset.

[0023] The beneficial effects of the utility model are:

[0024] The present application utilizes an air cylinder to replace a screw-type tightening clamp, thereby increasing the opening and closing speed of the clamp and being able to adjust the clamping force by controlling the air pressure of the air cylinder, thus making the clamping force value more reliable and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A three-dimensional diagram of a plastic flat wire tensile test fixture provided by the utility model;

[0027] Figure 2 A three-dimensional diagram of a plastic flat wire tensile test fixture provided by the utility model;

[0028] Figure 3 for Figure 2 Right view;

[0029] Figure 4 for Figure 2 Left view of;

[0030] Figure 5 for Figure 4 Cross-sectional view along the AA axis;

[0031] Figure 6 A three-dimensional diagram of a C-shaped bracket in a plastic flat wire tensile test fixture provided by the utility model;

[0032] Figure 7 The utility model provides an application schematic diagram of a plastic flat wire tensile test fixture.

[0033] Reference numerals:

[0034] 1-C-type bracket; 2-connecting seat; 3-cylinder; 4-fixed clamping block; 5-movable clamping block; 6-connecting rod; 7-guide column; 8-plastic flat wire;

[0035] 11-cylinder mounting seat; 12-clamp mounting plate; 13-groove; 14-first through hole; 15-second through hole; 21-positioning boss; 31-piston rod; 41-arc groove; 51-connecting column. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0037] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0038] In the description of this 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", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of this utility model, "plurality" means more than two, unless otherwise specifically defined.

[0040] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0041] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] Example

[0043] like Figures 1 to 6 As shown, the utility model provides a plastic flat wire tensile test fixture, comprising:

[0044] A C-shaped bracket 1 is provided on the upper side of the C-shaped bracket 1 with a cylinder mounting seat 11 perpendicular to the C-shaped bracket 1, a first through hole 14 is provided in the center of the cylinder mounting seat 11, a clamp mounting plate 12 is provided on the lower side of the C-shaped bracket 1, and a second through hole 15 is provided on the lower side of the C-shaped bracket 1, a groove 13 is provided on the arc surface of the C-shaped bracket 1, and the first through hole 14 and the second through hole 15 are connected to the groove 13;

[0045] A connecting seat 2, the connecting seat 2 is arranged at the top end of the C-shaped bracket 1;

[0046] a cylinder 3 , wherein the cylinder 3 is mounted on the cylinder mounting seat 11 , and a piston rod 31 of the cylinder 3 passes through the first through hole 14 ;

[0047] A fixed clamping block 4, the fixed clamping block 4 is arranged on the outside of the fixture mounting plate 12;

[0048] A movable clamping block 5 is provided on the inner side of the fixture mounting plate 12 , and a connecting column 51 is provided on the side of the movable clamping block 5 facing the C-shaped bracket 1 , and the connecting column 51 passes through the second through hole 15 ;

[0049] The connecting rod 6 is arranged in the groove 13, and the middle part of the connecting rod 6 is hinged to the C-shaped bracket 1, and the two ends of the connecting rod 6 are hinged to the piston rod 31 and the connecting column 51 respectively.

[0050] The utility model first uses the cylinder 3 as the power source. The cylinder 3 moves quickly and the output force can be controlled by adjusting the air pressure of the cylinder 3. In this way, combined with the connecting rod 6 structure, the cylinder 3 can control the movement of the movable clamp 5 and the clamping force.

[0051] like Figure 7 As shown, an arc-shaped groove 41 is formed on the outer side surface of the fixing clamp 4 .

[0052] The arc groove 41 is for placing the plastic flat wire. When the arc groove 41 is formed, one end of the plastic flat wire 8 is clamped between the fixed clamping block 4 and the movable clamping block 5, and the remaining plastic flat wire 8 will be wound along the arc groove 41, thereby increasing the contact area with the clamping block, changing the direction of the force, and improving the clamping stability of the plastic flat wire 4 in the clamp; and because the arc groove 41 has no sharp corners, the plastic flat wire 4 will not be cut.

[0053] On the basis of the above technical solution, guide columns 7 are further provided at the upper and lower ends of the fixed clamp block 4. The guide columns 7 are inclined cones, and the guide column 7 at the upper end is inclined upward, while the guide column 7 at the lower end is inclined downward.

[0054] The guide post 7 is used to guide the plastic flat wire 8 into the arc-shaped groove 41 .

[0055] On the basis of the above technical solution, a flexible cushion layer is provided on a side of the fixed clamping block 4 facing the movable clamping block 5 and a side of the movable clamping block 5 facing the fixed clamping block 4 .

[0056] Due to the reasons of processing precision, the contact surfaces of the fixed clamping block 4 and the movable clamping block 5 cannot be completely fitted together. If they cannot be completely fitted together, it will affect the clamping of the plastic flat wire 8. The flexible cushion layer has a certain elasticity and can be deformed when clamping, which can increase the contact area with the plastic flat wire and improve the firmness of the clamping.

[0057] On the basis of the above technical solution, a positioning boss 21 is provided on the top surface of the connecting seat 2 .

[0058] The positioning boss 21 is for facilitating connection with the tensioning equipment to ensure that the straightened plastic flat wire 8 is in a vertical position. Whether the axis of the connecting seat 2 is in the same plane as the inner side or outer side of the fixed clamping block 4 depends on whether the outer side of the fixed clamping block 4 has an arc groove 41. If the arc groove 41 is present, the axis of the connecting seat 2 is in the same plane as the vertex of the arc groove on the outer side of the fixed clamping block 4. Otherwise, the axis of the connecting seat 2 is in the same plane as the inner side of the fixed clamping block 4.

[0059] On the basis of the above technical solution, a spring is sleeved on the connecting column 51 , and the spring is located in the groove 13 .

[0060] When the cylinder 3 is depressurized, the spring can help the movable clamping block 5 to return to its original position, so that the movable clamping block 5 can be separated from the fixed clamping block 4, making it easier to take out the plastic flat wire 8.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A plastic flat wire tensile test fixture, characterized in that: include: A C-shaped bracket, wherein the upper end side surface of the C-shaped bracket is provided with a cylinder mounting seat perpendicular to the C-shaped bracket, a first through hole is opened in the center of the cylinder mounting seat, a clamp mounting plate is provided on the lower end side surface of the C-shaped bracket, and a second through hole is opened on the lower end side surface of the C-shaped bracket, and a groove is opened on the arc surface of the C-shaped bracket, and the first through hole and the second through hole are connected to the groove; A connecting seat, the connecting seat being arranged at the top end of the C-shaped bracket; a cylinder, the cylinder being mounted on the cylinder mounting seat, and the piston rod of the cylinder passing through the first through hole; A fixed clamping block, the fixed clamping block being arranged on the outside of the fixture mounting plate; a movable clamping block, the movable clamping block being arranged on the inner side of the clamp mounting plate, and a connecting column being provided on a side of the movable clamping block facing the C-shaped bracket, the connecting column passing through the second through hole; A connecting rod is arranged in the groove, and the middle part of the connecting rod is hinged to the C-shaped bracket, and the two ends of the connecting rod are respectively hinged to the piston rod and the connecting column.

2. The plastic flat wire tensile test fixture according to claim 1, characterized in that: An arc groove is formed on the outer side surface of the fixing clamping block.

3. The plastic flat wire tensile test fixture according to claim 2, characterized in that: The upper and lower ends of the fixed clamp block are further provided with guide columns, which are inclined cones. The guide column at the upper end is inclined upward, and the guide column at the lower end is inclined downward.

4. The plastic flat wire tensile test fixture according to claim 1, 2 or 3, characterized in that: A flexible cushion layer is provided on one side of the fixed clamping block facing the movable clamping block and on one side of the movable clamping block facing the fixed clamping block.

5. The plastic flat wire tensile test fixture according to claim 1, characterized in that: A positioning boss is provided on the top surface of the connecting seat.

6. The plastic flat wire tensile test fixture according to claim 1, characterized in that: A spring is sleeved on the connecting column, and the spring is located in the groove.

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