Precise miniature stretcher

Abstract

The utility model discloses a precise miniature stretcher which is characterized by comprising a bottom plate, a cover plate B and a cover plate C are sleeved on the bottom plate, a screw rod support, a sliding block and a motor mounting plate are mounted on the bottom plate, a motor, a cover plate A and a screw rod are mounted on the motor mounting plate, a connecting block is in threaded connection with the screw rod, a pressure sensor is mounted on the connecting block, and a pressure sensor is mounted on the pressure sensor. A test piece supporting block A is mounted on the pressure sensor; the test piece supporting block A is provided with a light speed limiting block and a connecting piece, a test piece supporting block B is fixed on the bottom plate, and the test piece supporting block B is connected with a connecting piece; the top of the screw rod is provided with a handle, and the bottom of the screw rod is connected with a test piece pressing block. The precise micro stretcher provided by the utility model not only is convenient to test a test sample and increases the test convenience, but also is not provided with structures such as a connecting cylinder and the like, so that the precise micro stretcher is barrier-free during movement, can be moved by a user as required, and brings convenience to the user.

Description

Technical Field

[0001] The utility model relates to the technical field of material stretching test equipment, in particular to a precision micro-stretching machine. Background Art

[0002] The material tensile machine is an experimental instrument used to test the mechanical properties of materials during the stretching process. This equipment is widely used in fields such as material engineering, scientific research, and product design, because the tensile test is one of the important experiments to measure the mechanical properties of materials. The design of the tensile testing machine is mainly based on the internal structure and mechanical behavior of the material.

[0003] Its working principle is to apply a load to the test sample, stretch it, and record and measure the degree of stretching of the sample and the force required. In this way, tensile testing provides important information about material strength, elasticity, plasticity, toughness, fracture and fatigue.

[0004] The existing stretching machine is relatively large and is generally stored in a laboratory, and then connected to a cylinder or other structure as a drive. Therefore, it is not convenient to move the position when in use, and it is also inconvenient to operate during testing and connection, which brings inconvenience to the user. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a precision micro stretching machine, the purpose of which is to solve the above problems.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A precision micro-stretching machine comprises a bottom plate, on which a cover plate B and a cover plate C are sleeved, and is characterized in that:

[0008] The bottom plate is equipped with a screw support, a slider and a motor mounting plate, the motor, a cover plate A and a screw are mounted on the motor mounting plate, a connecting block is threadedly connected to the screw, a pressure sensor is mounted on the connecting block, and a test piece support block A is mounted on the pressure sensor;

[0009] The test piece support block A is installed with a light speed limit block and a connecting piece, a test piece support block B is fixed on the bottom plate, and the test piece support block B is connected with a connecting piece;

[0010] The connecting piece is threadedly connected with a screw rod, the top of the screw rod is provided with a handle, and the bottom of the screw rod is connected with a test piece pressing block;

[0011] Two guide posts and a limit plate are installed on the test piece pressing block, and the guide posts pass through the connecting piece;

[0012] A displacement sensor is installed on the bottom plate, and the displacement sensor is used in conjunction with a light speed limit block.

[0013] Preferably, a pulley B is installed on the motor mounting plate;

[0014] The screw is installed on the motor mounting plate and the screw support, a bearing is installed on the screw, and a pulley A is installed at the tail of the screw;

[0015] Pulley A is connected to pulley B by belt transmission, and a belt limit screw is used to adjust the tightness of the belt.

[0016] Preferably, the top of the test strip support block A, the top of the test strip support block B and the bottom of the test strip pressing block are all provided with serrated textures.

[0017] Preferably, a displacement sensor is installed on the bottom plate for detecting the change in the length of the test piece in real time.

[0018] Preferably, a motor drive board is installed on the bottom plate, the motor drive board is electrically connected to the motor, and the motor drive board controls the movement of the motor.

[0019] Preferably, the pulley A, pulley B and belt are all arranged inside the cover plate A.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The utility model provides a precision micro-stretching machine, which is not only easy to test the test sample and increases the convenience of the test, but also has no connection to structures such as cylinders, so there is no obstacle when moving, and the user can move it as needed, which brings convenience to the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a precision micro-stretching machine described in the utility model;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of a precision micro-stretching machine described in the utility model from the back;

[0024] Figure 3 This is a schematic diagram of the appearance of a precision micro-stretching machine described in the utility model;

[0025] Figure 4 This is a schematic diagram of the structure inside the cover plate A of the utility model;

[0026] Figure 5 It is a schematic diagram of the enlarged structure of the connection of the test sample of the utility model.

[0027] In the figure: 101 bottom plate, 102 test piece support block A, 103 test piece pressing block, 104 guide column, 105 test piece support block B, 106 cover plate A, 107 light speed limit block, 108 connecting block, 109 motor mounting plate, 110 screw support, 111 cover plate B, 112 cover plate C, 113 connecting piece, 114 screw, 115 limit plate, 116 handle, 201 motor, 202 pressure sensor, 203 screw, 204 belt limit screw, 205 slider, 206 pulley A, 207 pulley B, 208 belt, 209 bearing, 210 displacement sensor, 211 motor drive plate. DETAILED DESCRIPTION

[0028] 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.

[0029] In the examples of this application, please refer to Figure 1 , 2 , 3, 4 and 5, the utility model provides an ultrasonic welding base for dynamic force measurement, including a bottom plate 101, a test piece support block A102, a test piece pressing block 103, a guide column 104, a test piece support block B105, a cover plate A106, a light speed limit block 107, a connecting block 108, a motor mounting plate 109, a screw support 110, a cover plate B111, a cover plate C112, a connecting piece 113, a screw 114, a limit plate 115, a handle 116, a motor 201, a pressure sensor 202, a screw 203, a belt limit screw 204, a slider 205, a pulley A206, a pulley B207, a belt 208, a bearing 209, a displacement sensor 210 and a motor drive plate 211;

[0030] Specifically, the bottom plate 101 is installed with a screw support 110, a slider 205 and a motor mounting plate 109, the motor mounting plate 109 is installed with a motor and a cover plate A106, the motor mounting plate 109 is installed with a pulley B207, the screw 203 is installed on the motor mounting plate 109 and the screw support 110, the screw 203 is installed with a bearing 209, the tail of the screw 203 is installed with a pulley A206, the pulley A206 is connected with the pulley B207 by a belt 208, the belt limit screw 204 is used to adjust the tightness of the belt, and the motor screw slider constitutes a linear motion component; the screw 203 is threadedly connected to the connecting block 108, the pressure sensor 202 is installed on the connecting block 108, and the test piece support block A102 is installed on the pressure sensor 202;

[0031] The test piece support block A102 is installed with a light speed limit block 107 and a connecting piece 113, a screw rod 114 is threadedly installed on the connecting piece 113, a handle 116 is fixed on the top of the screw rod 114, and the bottom of the screw rod 114 is rotatably connected to the test piece pressing block 103, that is, a T-shaped shaft is arranged at the bottom of the screw rod 114, and the T-shaped shaft is rotatably arranged inside the test piece pressing block 103, and other reasonable rotation connection methods are also possible. Two guide columns 104 and a limit plate 115 are installed on the test piece pressing block 103, and the structures connected to the test piece support block B105 and the test piece support block A102 are consistent; a displacement sensor 210 is installed on the bottom plate 101, and the displacement sensor 210 is used in conjunction with the light speed limit block 107; a motor drive board 211 is installed on the bottom plate 101, and the motor drive board 211 controls the movement of the motor.

[0032] During use, the device clamps the test piece through the test piece support block A102 and the test piece support block B105, that is, the handle 116 is rotated to drive the screw 114 to rotate, so that the screw 114 slides up and down, and the test piece pressing block 103 can be driven to move downward to clamp the test piece below the test piece pressing block 103 and above the test piece support block A102 and the test piece support block B105. The operation is simple and easy to install;

[0033] The motor drive board 211 controls the motor 201 to rotate the screw rod 203 and move the pressure sensor 202 along the movement direction of the slider 205 until the test piece breaks. When the equipment is running, the pressure sensor 202 records the tension data when the test piece is deformed; the displacement sensor 210 records the displacement change data, and combines the movement time and movement distance of the motor 201 to calculate important information such as the strength, elasticity, plasticity, toughness, fracture and fatigue of the test piece.

[0034] In a further embodiment, a screw support 110, a slider 205 and a motor mounting plate 109 are installed on the base plate 101, the motor 201 and the cover A106 are installed on the motor mounting plate 109, a pulley B207 is installed on the motor mounting plate 109, the pulley B207 is fixedly connected to the output shaft of the motor 201, the screw 203 is installed on the motor mounting plate 109 and the screw support 110, a bearing 209 is installed on the screw 203, a pulley A206 is installed at the tail of the screw 203, the screw 203 is threadedly connected to the inside of the connecting block 108, the pulley A206 is connected to the pulley B207 using a belt 208, and a belt limiter is used. The screw 204 limit screw adjusts the tightness of the belt, and the linear motion component is composed of a motor screw slider. The parts are all customized, which can reduce the overall size of the equipment, reduce the procurement cost of the equipment, and improve the accuracy of the equipment. The motor 201 is started to drive the pulley B207 to rotate, thereby driving the pulley A206 to rotate through the belt 208, and finally driving the screw 203 to rotate. The rotation of the screw 203 drives the connecting block 108 to move, and the test piece support block A102 can be pulled, so as to complete the pulling of the test piece. The operation is simple, easy to pull, and the structure is simple, the cost is low, and there is no need to set up a cylinder or other structure, so it is also easy to move its position;

[0035] In a further embodiment, a connecting block 108 is installed on the flange of the screw rod 203, a pressure sensor 202 is installed on the connecting block 108, and a test piece support block A102 is installed on the pressure sensor 202; a light speed limit block 107 and a connecting piece 113 are installed on the test piece support block A102, a screw 114 and a handle 116 are installed on the connecting piece 113, a test piece pressing block 103 is connected to the screw 114, two guide columns 104 and a limit plate 115 are installed on the test piece pressing block 103, and the test piece support block and the pressing block have serrated textures for increasing the friction coefficient between the welding base and the welding test piece, so that friction movement occurs between the welded test pieces.

[0036] In a further embodiment, a displacement sensor 210 is installed on the base plate 101. The displacement sensor 210 is used in conjunction with the light speed limit block 107. The displacement sensor 210 detects changes in the length of the test piece in real time. Specifically, existing sensors and detection structures can be used, and the control method and connection method are existing.

[0037] In a further embodiment, the pressure sensor 202 can actually record data during the deformation process of the test piece.

[0038] In a further embodiment, the motor driving board 211 drives the motor 201, and the driving board can record the movement distance and movement time of the motor.

[0039] In a further embodiment, during the deformation process of the test piece, deformation and pressure data of the test piece, movement distance and movement time of the motor are collected to calculate the tensile strength of the test piece.

[0040] The above-mentioned test piece refers to the tested sample, and the above-mentioned sensors, motors and control structures can all use existing ones and can be fixed, connected, operated and controlled in existing ways.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision micro-stretching machine, characterized in that: It includes a bottom plate, on which a cover plate B and a cover plate C are sleeved; The bottom plate is equipped with a screw support, a slider and a motor mounting plate, the motor, a cover plate A and a screw are mounted on the motor mounting plate, a connecting block is threadedly connected to the screw, a pressure sensor is mounted on the connecting block, and a test piece support block A is mounted on the pressure sensor; The test piece support block A is installed with a light speed limit block and a connecting piece, a test piece support block B is fixed on the bottom plate, and the test piece support block B is connected with a connecting piece; The connecting piece is threadedly connected with a screw rod, the top of the screw rod is provided with a handle, and the bottom of the screw rod is connected with a test piece pressing block; Two guide posts and a limit plate are installed on the test piece pressing block, and the guide posts pass through the connecting piece; A displacement sensor is installed on the bottom plate, and the displacement sensor is used in conjunction with a light speed limit block.

2. A precision micro-stretching machine according to claim 1, characterized in that: The motor mounting plate is provided with a pulley B; The screw is installed on the motor mounting plate and the screw support, a bearing is installed on the screw, and a pulley A is installed at the tail of the screw; Pulley A is connected to pulley B by belt transmission, and the belt limit screw is used to adjust the tightness of the belt.

3. A precision micro-stretching machine according to claim 1, characterized in that: The top of the test piece support block A, the top of the test piece support block B and the bottom of the test piece pressing block are all provided with serrated textures.

4. A precision micro-stretching machine according to claim 1, characterized in that: A displacement sensor is installed on the bottom plate to detect the change of the length of the test piece in real time.

5. A precision micro-stretching machine according to claim 1, characterized in that: A motor drive board is mounted on the bottom plate, the motor drive board is electrically connected to the motor, and the motor drive board is used to control the movement of the motor.

6. A precision micro-stretching machine according to claim 2, characterized in that: The pulley A, pulley B and belt are all arranged in the cover plate A.

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