Tensile test tool and test method for non-metal part of inner blowout prevention tool

Abstract

The invention discloses an inner blowout prevention tool nonmetal part tensile test tool and a test method thereof, and belongs to the technical field of tensile tests.The inner blowout prevention tool nonmetal part tensile test tool drives two test assemblies to conduct position exchange by switching a feeding assembly, so that a clamped sample can be smoothly located in an arc-shaped cover to conduct side tensile test operation, and the test efficiency is improved. Double-station switching type feeding operation is adopted, continuous feeding operation can be achieved in a reciprocating mode, the sample testing efficiency can be greatly improved through double-station switching type feeding, secondly, a protection plate in a switching feeding assembly can be matched with an arc-shaped cover to keep a closed machining area, the stretching safety is guaranteed, and in the rotating process of the testing assembly, the machining efficiency is greatly improved. And a rolling ball in a limiting assembly is driven to extrude the side edge of an arc-shaped cover, so that the rolling ball can push an upper second piston rod to move, the upper second piston rod can drive a third piston rod to move through hydraulic pressure, a clamping tooth plate is meshed with a third gear, the position of a stud can be locked, and therefore the clamping firmness of the sample can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of tensile testing, and in particular to a tensile testing tool for non-metallic parts of an internal blowout prevention tool and a testing method thereof. Background Art

[0002] The tensile test of non-metallic parts of internal blowout preventer tools is an important material performance test method, which aims to evaluate the mechanical properties and deformation behavior of non-metallic parts during the tensile process. In the test, the non-metallic parts are fixed between the clamps of the testing machine, and then the tensile force is gradually increased until the material breaks. By recording the force and deformation data during the tensile process, the stress-strain curve of the material can be analyzed to evaluate its mechanical properties. Key test indicators include tensile strength, yield strength, elongation at break, etc. These indicators are of great significance to the design, manufacture and application of materials.

[0003] At present, although tensile testing equipment has been widely used in the mechanical property evaluation of non-metallic parts of internal blowout preventers, the current technical means still face several significant challenges when dealing with multi-sample testing tasks. Specifically, traditional tensile testing devices often adopt a serial operation mode when dealing with a series of steps such as sample cutting, clamping, tensile testing and sample recovery, which means that the test process of each sample needs to be completed one by one, greatly extending the total time of batch testing.

[0004] In addition, existing systems usually require independent drive devices to perform sample cutting and stretching operations respectively, which undoubtedly increases the overall cost burden. More importantly, during the execution of the tensile test, if the clamping fixture becomes loose, it may not only cause the sample to pop out accidentally, posing a safety hazard, but may also directly interfere with the accuracy of the test results. At the same time, this looseness may also induce abnormal vibration or impact of the loading system, posing a potential risk of damage to the precision components inside the equipment, thereby affecting the long-term stability and test accuracy of the equipment.

[0005] In view of the above problems, the present invention document proposes a tensile test fixture and a test method for non-metallic parts of an internal blowout prevention tool. Summary of the invention

[0006] The purpose of the present invention is to solve the problems of inconvenience in batch testing and many shortcomings in the tensile test process of the tensile test equipment in the prior art, and to propose a tensile test fixture for non-metallic parts of an internal blowout prevention tool and a test method thereof.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A tensile test tool for non-metallic parts of an internal blowout prevention tool, comprising a test device, wherein the test device is equipped with a stretching and cutting mechanism; The stretching and cutting mechanism comprises an arc-shaped cover, a switching feeding assembly is arranged inside the arc-shaped cover, two test assemblies are arranged on both the front and rear sides of the switching feeding assembly, and a limit assembly is arranged on the test assembly, and the limit assembly locks the test assembly by squeezing the arc surfaces on both sides of the arc-shaped cover, and docking rails are installed above the two upper test assemblies, and the two docking rails are switched and engaged with the stretching assembly by rotation, and the stretching assembly is arranged above the arc-shaped cover; A cutting drive assembly is arranged above the arc-shaped cover, and a cutting assembly is arranged below one end of the cutting drive assembly.

[0008] Preferably, the cutting drive assembly includes two piston cylinders, which are connected by a connecting pipe, and the two piston cylinders are respectively fixedly mounted above and on one side of the arc-shaped cover, and a first piston rod is provided inside the piston cylinder, and the first piston rod extends out of the piston cylinder, and a first spring is fixedly connected between the top of one of the first piston rods and the top wall of the piston cylinder, and a driving plate is fixedly connected to the bottom end of the other first piston rod.

[0009] Preferably, the cutting assembly includes a platform, which is fixedly connected to one side of the arc cover, and two sliders are fixedly connected to the top of the platform. A drawer is set up above the platform, and two slide grooves are provided below the drawer, and the drawer slides on the slider through the slide grooves.

[0010] Preferably, the upper part of the drawer is used to store the sample, and a shell is provided above the drawer, a movable platform is slidably provided inside the shell, the upper part of the movable platform overlaps with the driving plate, and the lower part of the movable platform is fixedly connected with two second springs, and the bottom ends of the two second springs are fixedly connected with the bottom wall of the shell; A cutting knife and two inner cylinders are installed below the movable platform. The cutting knife is in the shape of a dumbbell. The inner cylinder is located in the cutting knife, and a top block is slidably arranged inside the inner cylinder. A third spring is fixedly connected between the top of the top block and the bottom of the inner cylinder.

[0011] Preferably, the stretching assembly includes a stretching device, which is fixedly installed above the arc cover, and a docking block is fixedly connected to the bottom of the stretching device. The docking block is T-shaped, and the internal shape of the docking rail is adapted to the shape of the docking block.

[0012] Preferably, the switching feeding assembly comprises a transmission shaft and a motor, the transmission shaft is rotatably mounted on the arc-shaped cover through a bearing, an upper plate is fixedly connected above the transmission shaft, and both left and right sides of the upper plate are fixedly connected with protective plates, which are arranged in the arc-shaped cover, and two polygonal rods are fixedly connected below the protective plates, and a polygonal sleeve is arranged on the outer cover of the polygonal rods; An adjustment plate is fixed to the middle of the transmission shaft by bolts, and the adjustment plate is also slidably arranged on the polygonal rod; The motor is mounted on the bottom wall of the arc-shaped cover, and the output shaft of the motor is fixedly connected with a first gear, one side of the first gear is meshed with a second gear, and the second gear is fixedly connected to the transmission shaft.

[0013] Preferably, the test assembly includes an assembly plate, the first piston rod at the top corresponds to the position of one of the assembly plates at the top, wherein the two assembly plates at the bottom are fixed below the transmission shaft, the bottom of the protective plate is fixed to the assembly plate at the bottom, and the assembly plate at the bottom is fixedly connected to the bottom end of the polygonal rod, the assembly plate at the top is mounted above the adjustment plate, and the two docking rails are respectively fixedly connected to the top of the two assembly plates at the top, and the polygonal sleeve is mounted on the assembly plate at the top; A tester is installed on the assembly plate, one end of the tester is fixedly connected to a clamp, a pressure plate is provided in the clamp, one side of the pressure plate is fixedly connected to a threaded barrel, the internal thread of the threaded barrel is connected to a stud, the stud is rotatably mounted on the clamp via a bearing, and one end of the stud is fixedly connected to a third gear.

[0014] Preferably, the limit assembly includes an upper cylinder and a side cylinder, and the upper cylinder and the side cylinder are respectively mounted on the assembly plate and the tester, and the side cylinder is connected to the upper cylinder through a pipeline, and a third piston rod is provided inside the side cylinder, and the third piston rod passes downward out of the side cylinder and is fixedly connected to a latch plate, and the latch plate is meshed with the third gear.

[0015] Preferably, an upper second piston rod is provided inside the upper cylinder, a fourth spring is fixedly connected between one side of the upper second piston rod and the side wall of the upper cylinder, the upper second piston rod passes through the upper cylinder and is fixedly connected to the rolling ball, the rolling ball is slidably arranged on the inner wall of the arc cover, and the front two side edges of the arc cover are set as arc surfaces.

[0016] A test method for a non-metallic part tensile test fixture of an internal blowout prevention tool comprises the following steps: S1. When conducting a tensile test, the sample is placed between two clamping plates, and the threaded barrel is pushed forward by rotating the stud, so that the threaded barrel drives the pressure plate to clamp the sample on the clamping plates. After clamping, the first gear and the second gear are driven by the motor, and the second gear drives the transmission shaft to rotate, and the transmission shaft drives the test assembly and the limit assembly to rotate. When the ball in the limit assembly passes through the arc-shaped side of the arc cover, the ball is squeezed and drives the upper second piston rod to move. The upper second piston rod pushes the liquid into the side barrel through the pipeline, so that the hydraulic drive third piston rod drives the clamping tooth plate downward to engage with the third gear, so that the position of the stud is locked; S2. When the two test components are rotated and repositioned, the clamped sample is at the rear, and at the same time, the test components drive the docking rail and the docking block to engage. At this time, the test equipment performs a stretching movement upward, so that the tester performs a stretching length test on the sample through the clamping plate. The tester records the data and transmits it to the test equipment; S3, placing the sample to be cut on the top of the drawer, and then pushing the drawer to the bottom of the shell, so that the top block positions the sample through the third spring; S4. When the upper assembly plate moves upward, it squeezes the first piston rod, so that the first piston rod drives another first piston rod through hydraulic pressure to drive the driving plate to move downward. The driving plate applies pressure to the movable table, so that the cutting knife cuts the sample downward. After cutting, it is a dumbbell shape. Then take out the cut sample and clamp it on the clamping plate again. S5. After the sample is clamped again, the positions of the two test components are swapped, and the broken or deformed sample is removed, and the sample tensile test is performed again in the arc cover.

[0017] Compared with the prior art, the present invention provides a tensile test fixture and test method for non-metallic parts of an internal blowout prevention tool, which has the following beneficial effects: 1. The non-metallic tensile test fixture and test method of the internal blowout prevention tool can drive the two test components to swap positions by switching the feeding component, so that the clamped sample can be smoothly placed in the arc cover for side tensile test operation, and adopts a double-station switching feeding operation, which can meet the requirement of re-clamping the sample at another station during stretching, so that continuous feeding operation can be achieved by reciprocating, so that the double-station switching feeding can greatly improve the test efficiency of the sample. Secondly, the protective plate in the switching feeding component can cooperate with the arc cover to maintain a closed processing area to ensure the safety of stretching, and during the rotation process of the test component, it also drives the ball in the limit assembly to squeeze the side of the arc cover, so that the ball can push the upper second piston rod to move, and the upper second piston rod can drive the third piston rod to move by hydraulic pressure, so that the tooth plate is engaged with the third gear, and the position of the stud can be locked, thereby effectively improving the clamping firmness of the sample.

[0018] 2. The non-metallic tensile test fixture and test method of the internal blowout prevention tool are as follows: after the two test components are switched, the docking rail and the docking block are engaged, and the tensile equipment is stretched upward at this time, so that the tester performs a tensile test on the sample through the clamping plate. When the upper assembly plate presses the first piston rod upward, so that the first piston rod presses the liquid into the other piston cylinder through the connecting pipe, the other piston rod and the driving plate are driven by hydraulic pressure to move, and the driving plate can press the movable table downward to make the cutting knife cut the sample downward, so that the cutting and shape preservation of the sample can be completed during the tensile test process. This method can effectively optimize the production process, enhance production flexibility, and reduce costs at the same time. The outer shell is detachable, which is convenient for cutting samples of different shapes. At the same time, the drawer adopts a pumping feeding method to facilitate material loading and unloading.

[0019] 3. The non-metallic tensile test fixture and test method of the internal blowout prevention tool can swap the positions of the two test components by switching the feeding component, so as to complete the cyclic feeding operation. After feeding, the tensile test is performed on the sample by the tensile component in cooperation with the test component, and the upward stretching process of the test component can drive the cutting drive component, so that the cutting drive component can pressurize the movable table of the cutting component, so that the cutting knife can smoothly cut the sample into a dumbbell shape, so that the sample can be cut in the tensile cutting process of the sample. After cutting, the sample can also be directly clamped, so that this process realizes the entire cycle flow, thereby greatly improving the efficiency of sample cutting and tensile testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional view of a non-metallic tensile test tool for an internal blowout prevention tool proposed by the present invention; Figure 2 A structural view of the connection between the test equipment and the arc cover of a non-metallic part tensile test fixture of an internal blowout prevention tool proposed by the present invention; Figure 3 A top-down stereoscopic view of a non-metallic tensile test tool for an internal blowout prevention tool proposed by the present invention; Figure 4 This is a structural view of the connection between the switching feeding assembly and the tensile assembly of the non-metallic part tensile test tool of the internal blowout prevention tool proposed by the present invention; Figure 5 A three-dimensional view of an arc-shaped cover of a non-metallic part tensile test tool for an internal blowout prevention tool proposed by the present invention; Figure 6 A three-dimensional view of a section of a cutting drive assembly of a non-metallic part tensile test tool for an internal blowout prevention tool proposed by the present invention; Figure 7 A three-dimensional view of a cutting assembly of a non-metallic tensile test tool for an internal blowout prevention tool proposed by the present invention; Figure 8A three-dimensional view of a cut component section of a non-metallic tensile test tool for an internal blowout prevention tool proposed by the present invention; Fig. 9 A three-dimensional view of a top view of the outer shell of a non-metallic tensile test tool for an internal blowout prevention tool proposed by the present invention; Fig.10 A three-dimensional view of a switching feeding assembly of a non-metallic part tensile test tool for an internal blowout prevention tool proposed by the present invention; Fig.11 A three-dimensional view of a test assembly of a non-metallic part tensile test fixture for an internal blowout prevention tool proposed by the present invention; Fig.12 A three-dimensional view of a transmission shaft of a non-metallic part tensile test fixture for an internal blowout prevention tool proposed by the present invention; Fig.13 A three-dimensional view of a clamping plate of a non-metallic part tensile test tool for an internal blowout prevention tool proposed by the present invention; Fig.14 This is a three-dimensional view of the cross-section of a limiting component of a non-metallic part tensile test fixture for an internal blowout prevention tool proposed by the present invention.

[0021] In the figure: 100, test equipment; 200, stretching and cutting mechanism; 201, arc cover; 202, stretching assembly; 2021, stretching equipment; 2022, docking block; 203, switching feeding assembly; 2031, transmission shaft; 2032, protective plate; 2033, upper plate; 2034, adjustment plate; 2035, second gear; 2036, first gear; 2037, motor; 2038, polygonal rod; 2039, polygonal sleeve; 204, test assembly; 2041, assembly plate; 2042, tester; 2043, clamping plate; 2044, pressing plate; 2045, threaded barrel; 2046, stud; 2047, third gear; 205, cutting drive assembly; 2051, Piston cylinder; 2052, first piston rod; 2053, first spring; 2054, connecting pipe; 2055, driving plate; 206, cutting assembly; 2061, platform; 2062, slider; 2063, drawer; 2064, outer shell; 2065, second spring; 2066, movable table; 2067, inner cylinder; 2068, cutting knife; 2069, third spring; 20610, top block; 20611, slide; 207, limit assembly; 2071, upper cylinder; 2072, upper second piston rod; 2073, rolling ball; 2074, fourth spring; 2075, pipeline; 2076, side cylinder; 2077, third piston rod; 2078, tooth plate; 208, docking rail. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention 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 a limitation on the present invention.

[0024] Example 1: Reference Figure 1-Figure 5 and Figure 10-Figure 14 , a non-metallic tensile test tool for an internal blowout prevention tool, comprising a test device 100, on which a stretching and cutting mechanism 200 is mounted; The stretching and cutting mechanism 200 includes an arc-shaped cover 201, and a switching feeding assembly 203 is arranged inside the arc-shaped cover 201. The switching feeding assembly 203 includes a transmission shaft 2031 and a motor 2037. The transmission shaft 2031 is rotatably mounted on the arc-shaped cover 201 through a bearing. An upper plate 2033 is fixedly connected above the transmission shaft 2031, and protective plates 2032 are fixedly connected to the left and right sides of the upper plate 2033. The protective plates 2032 are arranged in the arc-shaped cover 201, and the protective plates 2032 rotate with the transmission shaft 2031. The protective plates 2032 cooperate with the arc-shaped cover 201 to form a closed environment for the stretching area, thereby improving the safety of the stretching test operation. Two polygonal rods 2038 are fixedly connected below the protective plates 2032. The polygonal rods 203 The outer cover 8 is provided with a polygonal sleeve 2039, which can slide smoothly on the polygonal rod 2038, so that the upper assembly plate 2041 can move smoothly up and down. The middle part of the transmission shaft 2031 is fixed with an adjustment plate 2034 by bolts. The upper assembly plate 2041 can be supported by the adjustment plate 2034 to improve the stability of the assembly plate 2041. The adjustment plate 2034 can adjust the position on the transmission shaft 2031 and can be locked in position by bolts, so as to meet the requirements of tensile test operations for specimens of different lengths. The adjustment plate 2034 is also slidably arranged on the polygonal rod 2038. The motor 2037 is installed on the bottom wall of the arc cover 201, and the output shaft of the motor 2037 is fixedly connected with the first gear 2036. A second gear 2035 is meshed on one side, and the first gear 2036 is transmitted with the second gear 2035 to realize power transmission, so as to drive the transmission shaft 2031 to rotate. The second gear 2035 is fixedly connected to the transmission shaft 2031. Two test assemblies 204 are arranged on the front and rear sides of the switching feeding assembly 203. The test assembly 204 includes an assembly plate 2041. The upper first piston rod 2052 corresponds to the position of one of the upper assembly plates 2041, wherein the lower two assembly plates 2041 are fixed under the transmission shaft 2031, the lower side of the protective plate 2032 is fixed to the lower assembly plate 2041, and the lower assembly plate 2041 is fixedly connected to the bottom end of the polygonal rod 2038, and the upper assembly plate 20 41 is set on the top of the adjustment plate 2034, and the two docking rails 208 are respectively fixedly connected to the top of the two upper assembly plates 2041, the polygonal sleeve 2039 is installed on the upper assembly plate 2041, and a tester 2042 is installed on the assembly plate 2041. The tester 2042 can obtain the data of the tensile test and transmit it to the test equipment 100 for data display. One end of the tester 2042 is fixedly connected to a clamping plate 2043, and a pressing plate 2044 is provided in the clamping plate 2043. By arranging the pressing plate 2044 in the clamping plate 2043, the clamping plate 2043 can prevent the pressing plate 2044 from rotating, so that the threaded cylinder 2045 can smoothly push the pressing plate 2044 to move, and one side of the pressing plate 2044 is fixedly connected to the threaded cylinder 2045.The internal thread of the threaded barrel 2045 is connected with a stud 2046. Through the handle at one end of the stud 2046, it is convenient to rotate the stud 2046 and the threaded barrel 2045 for transmission, so that the threaded barrel 2045 can drive the pressing plate 2044 to fix the sample on the clamping plate 2043 to prevent the sample from falling off. The stud 2046 is rotatably installed on the clamping plate 2043 through a bearing, and one end of the stud 2046 is fixedly connected with a third gear 2047; The test assembly 204 is provided with a limit assembly 207, which includes an upper cylinder 2071 and a side cylinder 2076. The upper cylinder 2071 and the side cylinder 2076 are respectively mounted on the assembly plate 2041 and the tester 2042. The side cylinder 2076 is connected to the upper cylinder 2071 through a pipe 2075. A third piston rod 2077 is arranged inside the side cylinder 2076. The third piston rod 2077 passes through the side cylinder 2076 downward and is fixedly connected to the tooth plate 2078. The tooth plate 2078 is meshed with the third gear 2047. An upper second piston rod 2072 is arranged inside the upper cylinder 2071. A fourth spring 2074 is fixedly connected between one side and the side wall of the upper cylinder 2071. When the rolling ball 2073 is separated from the arc cover 201, the reset force of the fourth spring 2074 can drive the upper second piston rod 2072 to reset, so that the upper second piston rod 2072 can drive the third piston rod 2077 to move upward through the hydraulic pressure, so that the latch plate 2078 can automatically remove the engagement with the third gear 2047, which is convenient for the subsequent operation of fixing the sample. The upper second piston rod 2072 passes through the upper cylinder 2071 and is fixedly connected to the rolling ball 2073. The rolling ball 2073 is slidably arranged on the inner wall of the arc cover 201, and the two sides of the front of the arc cover 201 The two sides of the arc cover 201 are set as arc surfaces, so that the rolling ball 2073 can be squeezed and displaced when passing through the side, thereby controlling the movement of the second piston rod 2072, and the third piston rod 2077 and the latch plate 2078 are driven by hydraulic pressure to move, so that the latch plate 2078 and the third gear 2047 are engaged to achieve the purpose of locking the stud 2046, and the limit assembly 207 locks the test assembly 204 by squeezing the arc surfaces on both sides of the arc cover 201, and the upper parts of the two test assemblies 204 are equipped with docking rails 208, and the two docking rails 208 are engaged with the stretching assembly 202 by rotation, and the stretching assembly The component 202 is arranged above the arc cover 201. The stretching assembly 202 includes a stretching device 2021. The stretching device 2021 is fixedly installed above the arc cover 201, and a docking block 2022 is fixedly connected to the bottom of the stretching device 2021. The docking block 2022 is in a T-shape. The internal shape of the docking rail 208 is adapted to the shape of the docking block 2022. By setting the docking block 2022 and the docking rail 208 in a T-shape, the docking rail 208 can be smoothly engaged with the docking block 2022, so that the docking block 2022 can smoothly pull up the docking rail 208 and the assembly plate 2041, so as to facilitate the tensile test operation of the sample; A cutting drive assembly 205 is disposed above the arc-shaped cover 201 , and a cutting assembly 206 is disposed below one end of the cutting drive assembly 205 .

[0025] In this embodiment: the first gear 2036 and the second gear 2035 are driven by the motor 2037, the second gear 2035 drives the transmission shaft 2031 to rotate, and the transmission shaft 2031 drives the two test components 204 to swap positions, so that the clamped sample can be smoothly placed in the arc cover 201 for side tensile test operation, and the double-station switching feeding operation is adopted, which can meet the requirements of re-clamping the sample at another station during stretching, so that continuous feeding operation can be achieved by reciprocating, so that the double-station switching feeding can greatly improve the efficiency of sample testing. Secondly, By switching the protective plate 2032 in the loading assembly 203, the arc cover 201 can be cooperated to maintain a closed processing area to ensure stretching safety. In addition, during the rotation of the test assembly 204, the ball 2073 and the side of the arc cover 201 are squeezed, so that the ball 2073 can push the upper second piston rod 2072 to move. The upper second piston rod 2072 can hydraulically drive the third piston rod 2077 to move, so that the tooth plate 2078 is engaged with the third gear 2047, and the position of the stud 2046 can be locked, thereby effectively improving the clamping firmness of the sample.

[0026] Example 2: Reference Figure 6-Figure 9 , a non-metallic tensile test tool for an internal blowout prevention tool, including a cutting drive assembly 205, the cutting drive assembly 205 includes two piston cylinders 2051, the two piston cylinders 2051 are connected by a pipe 2054, the two piston cylinders 2051 are respectively fixedly installed on the top and one side of the arc cover 201, a first piston rod 2052 is arranged inside the piston cylinder 2051, the first piston rod 2052 extends out of the piston cylinder 2051, a first spring 2053 is fixedly connected between the top of one of the first piston rods 2052 and the top wall of the piston cylinder 2051, when the assembly plate 2041 is reset downward, the first spring 2053 drives the first piston rod 2052 to reset downward, so that the first piston rod 2052 can drive the other first piston rod 2052 to reset upward through hydraulic pressure, so that the driving plate 2055 is reset upward, and the bottom end of the other first piston rod 2052 is fixedly connected to the driving plate 2055; The cutting assembly 206 includes a platform 2061, which is fixedly connected to one side of the arc cover 201. Two sliders 2062 are fixedly connected to the top of the platform 2061, and a drawer 2063 is set up on the top of the platform 2061. Two slide grooves 20611 are provided below the drawer 2063. The drawer 2063 slides on the slider 2062 through the slide grooves 20611. The slider 2062 can guide the drawer 2063 to maintain the stability of the drawer 2063. The top of the drawer 2063 is used to store the sample, and a shell 2064 is provided above the drawer 2063. A movable platform 2066 is slidably provided inside the shell 2064. The top of the movable platform 2066 is overlapped with the driving plate 2055, and the bottom of the movable platform 2066 is fixedly connected with two A second spring 2065, when the driving plate 2055 is reset upward, the second spring 2065 can drive the movable platform 2066 to reset upward smoothly, so that the cutting knife 2068 can be reset smoothly, the bottom ends of the two second springs 2065 are fixedly connected to the bottom wall of the shell 2064, and the cutting knife 2068 and two inner cylinders 2067 are installed below the movable platform 2066. The cutting knife 2068 is in the shape of a dumbbell, and the inner cylinder 2067 is located in the cutting knife 2068, and a top block 20610 is slidably penetrated inside the inner cylinder 2067, and a third spring 2069 is fixedly connected between the top of the top block 20610 and the bottom of the inner cylinder 2067. Through the elastic force of the third spring 2069, the top block 20610 can press the sample, so that the sample can be positioned; In this embodiment: after the two test components 204 are switched, the docking rail 208 is engaged with the docking block 2022. At this time, the stretching device 2021 is stretched upward, so that the tester 2042 performs a stretching test on the sample through the clamping plate 2043. When the upper assembly plate 2041 applies pressure upward to the first piston rod 2052, the first piston rod 2052 presses the liquid into the other piston cylinder 2051 through the connecting pipe 2054, and the other piston rod and the driving plate 2055 are driven by hydraulic pressure to move. The driving plate 2055 can apply pressure downward to the movable table 2066 to make the cutting knife 2068 cut the sample downward. In this way, the cutting and shape preservation of the sample can be completed during the stretching test process. This method can effectively optimize the production process, enhance production flexibility, and reduce costs. The shell 2064 is detachable, which is convenient for cutting samples of different shapes. At the same time, the drawer 2063 adopts a pumping feeding method to facilitate material removal and discharge.

[0027] Example 3: Reference Figure 3-Figure 5A non-metallic tensile test tool for an internal blowout prevention tool includes a tensile and cutting mechanism 200, the tensile and cutting mechanism 200 includes an arc cover 201, a switching feeding component 203 is arranged inside the arc cover 201, two test components 204 are arranged on both the front and rear sides of the switching feeding component 203, and a limit component 207 is arranged on the test component 204, the limit component 207 locks the test component 204 by extruding the arc surfaces on both sides of the arc cover 201, and the upper parts of the two upper test components 204 are equipped with docking rails 208, the two docking rails 208 are switched and engaged with the tensile component 202 by rotation, and the tensile component 202 is arranged above the arc cover 201; A cutting drive assembly 205 is disposed above the arc-shaped cover 201 , and a cutting assembly 206 is disposed below one end of the cutting drive assembly 205 .

[0028] In this embodiment: the positions of the two test components 204 can be swapped by switching the loading component 203, so as to complete the cyclic feeding operation. After feeding, the tensile component 202 cooperates with the test component 204 to perform a tensile test on the sample, and the upward stretching process of the test component 204 can drive the cutting drive component 205, so that the cutting drive component 205 can apply pressure to the movable table 2066 of the cutting component 206, so that the cutting knife 2068 can smoothly cut the sample into a dumbbell shape, so that the sample cutting can be completed during the sample stretching and cutting process. After cutting, the sample can also be directly clamped, so that this process realizes the entire cycle flow, thereby greatly improving the efficiency of sample cutting and tensile testing.

[0029] A test method for a non-metallic part tensile test fixture of an internal blowout prevention tool comprises the following steps: S1. When performing a tensile test, the sample is placed between the two clamping plates 2043, and the threaded cylinder 2045 is pushed to move by rotating the stud 2046, so that the threaded cylinder 2045 drives the pressure plate 2044 to clamp the sample on the clamping plate 2043. After clamping, the first gear 2036 and the second gear 2035 are driven by the motor 2037 to transmit, and the second gear 2035 drives the transmission shaft 2031 to rotate, and the transmission shaft 2031 drives the test assembly 204 and the limit assembly 207 to rotate. When the ball 2073 in the limit assembly 207 passes through the arc-shaped side of the arc cover 201, the ball 2073 is squeezed and drives the upper second piston rod 2072 to move. The upper second piston rod 2072 pushes the liquid into the side cylinder 2076 through the pipeline 2075, so that the hydraulically driven third piston rod 2077 drives the tooth plate 2078 downward to engage with the third gear 2047, so that the position of the stud 2046 is locked; S2. After the two test assemblies 204 are rotated and exchanged, the clamped sample is at the rear, and at the same time, the test assembly 204 drives the docking rail 208 to engage with the docking block 2022. At this time, the test equipment 100 performs a stretching movement upward, so that the tester 2042 performs a stretching length test on the sample through the clamping plate 2043. The tester 2042 records the data and transmits it to the test equipment 100. S3, placing the sample to be cut on the top of the drawer 2063, and then pushing the drawer 2063 to the bottom of the housing 2064, so that the top block 20610 positions the sample through the third spring 2069; S4, when the upper assembly plate 2041 moves upward to squeeze the first piston rod 2052, the first piston rod 2052 drives the other first piston rod 2052 through hydraulic pressure to drive the driving plate 2055 to move downward, and the driving plate 2055 applies pressure to the movable table 2066, so that the cutting knife 2068 cuts the sample downward, and the sample is in a dumbbell shape after cutting. Then the cut sample is taken out and clamped on the clamping plate 2043 again; S5. After the sample is clamped again, the positions of the two test assemblies 204 are swapped, and the broken or deformed sample is removed, and at the same time, the sample tensile test is performed again in the arc cover 201.

[0030] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tensile test fixture for non-metallic parts of an internal blowout prevention tool, comprising a test device (100), characterized in that: The testing device (100) is equipped with a stretching and cutting mechanism (200); The stretching and cutting mechanism (200) comprises an arc-shaped cover (201), a switching feeding assembly (203) is arranged inside the arc-shaped cover (201), two test assemblies (204) are arranged on both the front and rear sides of the switching feeding assembly (203), a limit assembly (207) is arranged on the test assembly (204), the limit assembly (207) locks the test assembly (204) by squeezing the arc surfaces on both sides of the arc-shaped cover (201), and the upper parts of the two upper test assemblies (204) are equipped with docking rails (208), the two docking rails (208) are switched and engaged with the stretching assembly (202) by rotation, and the stretching assembly (202) is arranged above the arc-shaped cover (201); A cutting drive assembly (205) is arranged above the arc-shaped cover (201), and a cutting assembly (206) is arranged below one end of the cutting drive assembly (205).

2. The non-metallic tensile test tool for internal blowout prevention tools according to claim 1, characterized in that: The cutting drive assembly (205) comprises two piston cylinders (2051), the two piston cylinders (2051) are connected via a pipe (2054), the two piston cylinders (2051) are respectively fixedly mounted above and on one side of the arc-shaped cover (201), a first piston rod (2052) is arranged inside the piston cylinder (2051), the first piston rod (2052) extends out of the piston cylinder (2051), a first spring (2053) is fixedly connected between the top of one of the first piston rods (2052) and the top wall of the piston cylinder (2051), and a driving plate (2055) is fixedly connected to the bottom end of the other first piston rod (2052).

3. The non-metallic tensile test tool for internal blowout prevention tool according to claim 2, characterized in that: The cutting assembly (206) comprises a platform (2061), wherein the platform (2061) is fixedly connected to one side of the arc-shaped cover (201), two sliders (2062) are fixedly connected to the top of the platform (2061), and a drawer (2063) is arranged above the platform (2061), and two slide grooves (20611) are arranged below the drawer (2063), and the drawer (2063) slides on the sliders (2062) through the slide grooves (20611).

4. The non-metallic tensile test tool for internal blowout prevention tool according to claim 3, characterized in that: The upper part of the drawer (2063) is used to store the sample, and a shell (2064) is provided on the upper part of the drawer (2063), a movable platform (2066) is slidably provided inside the shell (2064), the upper part of the movable platform (2066) is overlapped with the driving plate (2055), and the lower part of the movable platform (2066) is fixedly connected with two second springs (2065), and the bottom ends of the two second springs (2065) are fixedly connected with the bottom wall of the shell (2064); A cutting knife (2068) and two inner cylinders (2067) are installed below the movable platform (2066); the cutting knife (2068) is in the shape of a dumbbell; the inner cylinder (2067) is located in the cutting knife (2068); a top block (20610) is slidably inserted into the interior of the inner cylinder (2067); and a third spring (2069) is fixedly connected between the top of the top block (20610) and the bottom of the inner cylinder (2067).

5. The non-metallic tensile test tool for internal blowout prevention tool according to claim 4, characterized in that: The stretching assembly (202) comprises a stretching device (2021), the stretching device (2021) is fixedly mounted above the arc-shaped cover (201), and a docking block (2022) is fixedly connected to the bottom of the stretching device (2021), the docking block (2022) is in a T-shape, and the internal shape of the docking rail (208) is compatible with the shape of the docking block (2022).

6. The non-metallic tensile test tool for internal blowout prevention tool according to claim 5, characterized in that: The switching feeding assembly (203) comprises a transmission shaft (2031) and a motor (2037); the transmission shaft (2031) is rotatably mounted on the arc-shaped cover (201) via a bearing; an upper plate (2033) is fixedly connected above the transmission shaft (2031); both left and right sides of the upper plate (2033) are fixedly connected to protective plates (2032); the protective plates (2032) are arranged in the arc-shaped cover (201); two polygonal rods (2038) are fixedly connected below the protective plates (2032); and a polygonal sleeve (2039) is provided on the outer cover of the polygonal rod (2038); An adjustment plate (2034) is fixed to the middle of the transmission shaft (2031) by means of bolts, and the adjustment plate (2034) is also slidably disposed on the polygonal rod (2038); The motor (2037) is mounted on the bottom wall of the arc-shaped cover (201), and the output shaft of the motor (2037) is fixedly connected to a first gear (2036), one side of the first gear (2036) is meshed with a second gear (2035), and the second gear (2035) is fixedly connected to the transmission shaft (2031).

7. The non-metallic tensile test tool for internal blowout prevention tool according to claim 6, characterized in that: The test assembly (204) comprises an assembly plate (2041), the first piston rod (2052) at the top corresponds to the position of one of the assembly plates (2041) at the top, wherein the two assembly plates (2041) at the bottom are fixed below the transmission shaft (2031), the bottom of the protective plate (2032) is fixed to the assembly plate (2041) at the bottom, and the assembly plate (2041) at the bottom is fixedly connected to the bottom end of the polygonal rod (2038), the assembly plate (2041) at the top is arranged above the adjustment plate (2034), and the two docking rails (208) are respectively fixedly connected to the top of the two assembly plates (2041) at the top, and the polygonal sleeve (2039) is installed on the assembly plate (2041) at the top; A tester (2042) is installed on the assembly plate (2041), one end of the tester (2042) is fixedly connected to a clamp (2043), a pressure plate (2044) is provided in the clamp (2043), one side of the pressure plate (2044) is fixedly connected to a threaded barrel (2045), the internal thread of the threaded barrel (2045) is connected to a stud (2046), the stud (2046) is rotatably mounted on the clamp (2043) via a bearing, and one end of the stud (2046) is fixedly connected to a third gear (2047).

8. The non-metallic tensile test tool for internal blowout prevention tool according to claim 7, characterized in that: The limit assembly (207) comprises an upper cylinder (2071) and a side cylinder (2076), wherein the upper cylinder (2071) and the side cylinder (2076) are respectively mounted on an assembly plate (2041) and a tester (2042), wherein the side cylinder (2076) is connected to the upper cylinder (2071) via a pipe (2075), wherein a third piston rod (2077) is arranged inside the side cylinder (2076), wherein the third piston rod (2077) passes downwardly out of the side cylinder (2076) and is fixedly connected to a latch plate (2078), wherein the latch plate (2078) is meshed with a third gear (2047).

9. The non-metallic tensile test tool for internal blowout prevention tool according to claim 8, characterized in that: An upper second piston rod (2072) is arranged inside the upper cylinder (2071), and a fourth spring (2074) is fixedly connected between one side of the upper second piston rod (2072) and the side wall of the upper cylinder (2071). The upper second piston rod (2072) passes through the upper cylinder (2071) and is fixedly connected to the rolling ball (2073). The rolling ball (2073) is slidably arranged on the inner wall of the arc cover (201), and the front two side edges of the arc cover (201) are both arranged as arc surfaces.

10. The test method of the non-metallic tensile test tool of the internal blowout prevention tool according to claim 9, characterized in that: The following steps are involved: S1. When performing a tensile test, the sample is placed between two clamping plates (2043), and the threaded cylinder (2045) is pushed forward by rotating the stud (2046), so that the threaded cylinder (2045) drives the pressure plate (2044) to clamp the sample on the clamping plates (2043). After clamping, the first gear (2036) and the second gear (2035) are driven by the motor (2037), and the second gear (2035) drives the transmission shaft (2031) to rotate, and the transmission shaft (2031) drives the test assembly ( 204) and the limit assembly (207) rotate, and when the ball (2073) in the limit assembly (207) passes through the arc-shaped side of the arc-shaped cover (201), the ball (2073) is squeezed to drive the upper second piston rod (2072) to move, and the upper second piston rod (2072) pushes the liquid into the side tube (2076) through the pipeline (2075), so that the hydraulically driven third piston rod (2077) drives the latch plate (2078) downward to mesh with the third gear (2047), so that the position of the stud (2046) is locked; S2. When the two test assemblies (204) are rotated and repositioned, the clamped sample is located at the rear, and at the same time, the test assembly (204) drives the docking rail (208) to engage with the docking block (222). At this time, the test device (100) performs a stretching movement upward, so that the tester (2042) performs a stretching length test on the sample through the clamping plate (2043). The tester (2042) records the data and transmits it to the test device (100); S3, placing the sample to be cut above the drawer (2063), and then pushing the drawer (2063) to the bottom of the housing (2064), so that the top block (20610) positions the sample through the third spring (2069); S4. When the upper assembly plate (2041) moves upward to squeeze the first piston rod (2052), the first piston rod (2052) drives another first piston rod (2052) through hydraulic pressure to drive the driving plate (2055) to move downward. The driving plate (2055) applies pressure to the movable table (2066), so that the cutting knife (2068) cuts the sample downward. After cutting, the sample is in a dumbbell shape. The cut sample is then taken out and clamped on the clamping plate (2043) again. S5. After the sample is clamped again, the positions of the two test assemblies (204) are swapped, and the broken or deformed sample is removed, and at the same time, the sample tensile test is performed again in the arc cover (201).

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