Engineering plastic tension testing device

Abstract

The utility model discloses an engineering plastic tension testing device, which relates to the field of engineering plastic product detection and comprises a pressing assembly for limiting an engineering plastic part to be tested in the vertical direction, a clamping assembly for limiting the engineering plastic part to be tested in the horizontal direction and a testing assembly for detecting the engineering plastic part to be tested. According to the utility model, the clamping assemblies are arranged at the front end and the rear end of the to-be-tested engineering plastic part for clamping, and the distance between the clamping assemblies and the to-be-tested engineering plastic part can be adjusted, so that the to-be-tested engineering plastic parts with different sizes can be limited in the clamping assemblies; according to the device, the downward pressing assembly is arranged to limit left-right movement and up-down movement of the to-be-tested engineering plastic part, so that the to-be-tested engineering plastic parts with different sizes are limited at specific positions, an effective limiting state is achieved, the size of a tension value can be visually seen through the digital display type tension meter and is compared, and the operation is more convenient and simpler.

Description

Technical Field

[0001] The utility model relates to the field of engineering plastic product testing, in particular to an engineering plastic tensile testing device. Background Art

[0002] Engineering plastics are a class of polymer materials that exhibit excellent mechanical properties, heat resistance, chemical resistance, and dimensional stability. They can be used over a wide temperature range and in harsh chemical and physical environments. They are often used as structural replacements for metals and are widely used in electronics, automotive, machinery, medical devices, and other fields.

[0003] During the processing, the tensile strength of engineering plastics often needs to be measured and recorded to check whether it meets production standards. Existing fixing bases for engineering plastic tensile testing are often fixed in size, which makes it difficult to uniformly and effectively fix engineering plastics of different sizes, and thus errors are prone to occur in the measurement.

[0004] To this end, the utility model proposes an engineering plastic tensile testing device that can be applied to press-fitting of different sizes and conveniently measure the tensile effect. Utility Model Content

[0005] The purpose of the present invention is to provide an engineering plastic tensile testing device to solve the problem in the above-mentioned background art that the fixing seat for the engineering plastic tensile test is often fixed in size, which makes it inconvenient to uniformly and effectively fix engineering plastics of different sizes.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an engineering plastic tensile testing device, comprising a pressing assembly for vertically confining the engineering plastic part to be tested, a clamping assembly for horizontally confining the engineering plastic part to be tested, and a testing assembly for detecting the engineering plastic part to be tested;

[0007] The pressing assembly includes a hydraulic cylinder, a pressing piece is connected below the hydraulic cylinder, and the pressing piece includes a stopper for preventing the engineering plastic part to be tested from moving toward the test assembly;

[0008] The clamping assembly includes a first limiting beam mounted on a first table, the first limiting beam being mounted on both the front and rear sides of the first table, a plurality of equally spaced adjusting screws being mounted on the first limiting beam, and a stop block being mounted on one end of the adjusting screw facing the middle; during assembly, the engineering plastic part to be tested is placed on the first table and clamped by the stop block;

[0009] The test assembly includes a second table, a cylinder is provided on the side of the second table away from the first table, the telescopic rod of the cylinder is arranged toward the direction of the first table, a movable frame is installed on the second table, the movable frame is fixedly connected to the telescopic rod of the cylinder, a digital dynamometer is fixedly installed on the inner side of the movable frame, and a pull rope is connected to the test end of the digital dynamometer. During assembly, one side of the pull rope is hooked with the engineering plastic part to be tested, and during movement, the movable frame moves in a linear motion.

[0010] Preferably, the pressing member includes a lifting rod directly connected to the hydraulic cylinder, the stop block is installed at the front end of the pressing plate and is perpendicular to the pressing plate, the pressing member contains at least two or more pressing plates, and several of the pressing plates are connected by chain plates, thereby realizing linkage pressing on the engineering plastic part to be tested.

[0011] Preferably, the middle parts of several of the pressing plates are commonly connected to the chain plate, and the middle chain plate is fixedly connected to the lifting rod to facilitate linkage.

[0012] Preferably, the abutting block is detachably mounted on the top end of the adjusting screw, so that the abutting block can be easily replaced, thereby making the relative thickness of the abutting block adjustable.

[0013] Preferably, the abutting block and the adjusting screw are fastened by threaded connection or clamping.

[0014] Preferably, the movable frame is made of a transparent acrylic plate, which makes it easy to visually see the detected values ​​and facilitate comparison.

[0015] Preferably, a hook is provided at one end of the pull rope facing the engineering plastic part to be tested, so as to facilitate connection with the test object.

[0016] Preferably, the front and rear ends of the second table are provided with second limiting beams, and the movable frame is provided with guide rods, which are respectively stuck in the sliding grooves of the second limiting beams at the front and rear ends and slide, and the guide rods are arranged perpendicular to the telescopic rod.

[0017] Preferably, the pressing plate and the stop block are provided with a protective layer on the side facing the engineering plastic part to be tested, and the side of the support block facing the engineering plastic part to be tested is also provided with a protective layer; when pressing, the protective layer on the inner side of the stop block is pressed against the edge of the first table, thereby increasing the protective effect and avoiding surface wear of the engineering plastic part to be tested.

[0018] Preferably, the protective layer is made of rubber material.

[0019] Compared with the prior art, the utility model discloses the beneficial effects are: the utility model discloses the front and rear of the engineering plastics piece of being detected are set up and are used for clamping and set up the spacing adjustable of clamping assembly to the engineering plastics piece of being detected, can the engineering plastics piece of being detected of different size be limited in and carry out the location in to different size engineering plastics piece of being detected is limited to the specific position through setting down pressure subassembly and left and right movement and up and down movement of the engineering plastics piece of being detected, thereby reach the state of effective location, then through the digital display type tension meter can the size of the tension value be seen directly and carry out the comparison, and the operation is more convenient and simple. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment described the need to use the drawing briefly introduce, obviously, the following description in the drawing is only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0021] Figure 1 It is the overall structure schematic diagram of the utility model;

[0022] Figure 2 It is the plan view of down pressure piece;

[0023] Figure 3 It is Figure 2 The front view;

[0024] Figure 4 It is the installation structure schematic diagram of mobile frame and digital display type tension meter;

[0025] Figure 5 It is the top view structure diagram of the engineering plastics piece of being detected when detecting.

[0026] In the drawing, the component list represented by each sign is as follows:

[0027] 100 down pressure assembly, 101 hydraulic oil cylinder, 102 down pressure piece, 1021 lifting rod, 1022 pressure plate, 1023 stop block, 1024 chain plate;

[0028] 200 clamping assembly, 201 first table, 202 first limiting beam, 203 adjusting screw, 204 abutting block;

[0029] 300 test assembly, 301 air cylinder, 302 telescopic rod, 303 mobile frame, 3031 guide rod, 304 digital display type tension meter, 305 pull rope, 306 second table, 307 second limiting beam;

[0030] 400 engineering plastics piece of being detected. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-5 The present invention provides a technical solution: an engineering plastic tensile testing device, comprising a pressing assembly 100 for vertically limiting an engineering plastic part 400 to be tested, a clamping assembly 200 for horizontally limiting an engineering plastic part 400 to be tested, and a testing assembly 300 for detecting the engineering plastic part 400 to be tested;

[0033] The pressing assembly 100 includes a hydraulic cylinder 301 , a pressing member 102 is connected below the hydraulic cylinder 301 , and the pressing member 102 includes a stopper 1023 for preventing the engineering plastic part 400 to be tested from moving toward the test assembly 300 ;

[0034] The clamping assembly 200 includes a first limiting beam 202 mounted on a first table 201. The first limiting beam 202 is mounted on the front and rear sides of the first table 201. A plurality of equally spaced adjusting screws 203 are mounted on the first limiting beam 202. A stop block 204 is mounted on one end of each adjusting screw 203 toward the middle. During assembly, the engineering plastic part 400 to be tested is placed on the first table 201 and clamped by the stop block 204.

[0035] The test assembly 300 includes a second table 308, on which a cylinder 301 is provided on a side of the second table 308 away from the first table 201, and a telescopic rod 302 of the cylinder 301 is arranged toward the first table 201. A movable frame 303 is installed on the second table 308, and the movable frame 303 is fixedly connected to the telescopic rod 302 of the cylinder 301. A digital dynamometer 304 is fixedly installed on the inner side of the movable frame 303, and a pull rope 305 is connected to the outside of the test end of the digital dynamometer 304. During assembly, one side of the pull rope 305 is hooked with the engineering plastic part 400 to be tested. When moving, the movable frame 303 moves in a linear motion.

[0036] Furthermore, the lower pressing member 102 includes a lifting rod 1021 directly connected to the hydraulic cylinder 301, and the stopper 1023 is installed at the front end of the pressing plate 1022 and is perpendicular to the pressing plate 1022. The lower pressing member 102 contains at least two or more pressing plates 1022, and several of the pressing plates 1022 are connected by a chain plate 1024. By vertically arranging the stopper 1023 and the pressing plate 1022, an L-shaped hook shape is formed between the stopper 1023 and the pressing plate 1022, thereby preventing the engineering plastic part 400 to be tested from moving toward the second table 306. In order to effectively protect the engineering plastic part 400 to be tested, the pressing plate 1022 and the stopper 1 023 is provided with a protective layer on the side facing the engineering plastic part 400 to be tested, the pressing plate 1022 and the stop block 1023 are provided with a protective layer on the side facing the engineering plastic part 400 to be tested, and the support block 204 is also provided with a protective layer on the side facing the engineering plastic part 400 to be tested. At the same time, in order to effectively press the engineering plastic part 400 to be tested, the middle parts of several pressing plates 1022 are commonly connected with the chain plate 1024, and the middle chain plate 1024 is fixedly connected to the lifting rod 1021, so as to facilitate the lifting rod 1021 to drive the whole and press the engineering plastic part 400 to be tested; during pressing, the protective layer on the inner side of the stop block 1023 is pressed on the edge of the first table 201.

[0037] Furthermore, the abutment block 204 is detachably mounted on the top of the adjusting screw 203 to facilitate replacement of the abutment block 204. Not only can the shape of the abutment block 204 be changed, but its thickness can also be changed. Specifically, the abutment block 204 is fastened to the adjusting screw 203 via a threaded or clipped connection, allowing for replacement of different types of abutment blocks 204. It should be noted that the abutment block 204 is also provided with a protective layer on the side facing the engineering plastic part 400 to be tested, to reduce wear on the engineering plastic part 400 to be tested. The protective layer is made of a rubber material.

[0038] Furthermore, a hook is provided at one end of the pull rope 305 facing the engineering plastic part 400 to be tested, so as to facilitate hooking the engineering plastic part 400 to be tested on the first table 201. In order to facilitate observation of whether the value of the pulling force meets the requirements, the movable frame 303 is made of a transparent acrylic plate.

[0039] Furthermore, in order to realize the linear motion of the movable frame 303 and prevent the deviation of the tension value caused by offset, the front and rear ends of the second table 308 are provided with a second limiting beam 307, and the movable frame 303 is provided with a guide rod 3031. The guide rod 3031 is respectively stuck in the sliding groove of the second limiting beam 307 at the front and rear ends and slides. The guide rod 3031 is arranged vertically to the telescopic rod 302. In this way, when the cylinder 301 drives the telescopic rod 302 to move, the movable frame 303 and the digital dynamometer 304 can move in a straight line to ensure the accuracy of the tension value.

[0040] A specific application of this embodiment is: the utility model is suitable for testing regular but different-sized engineering plastic parts, specifically an engineering plastic tensile testing device. When in use, the engineering plastic part to be tested is first placed on the first table, and the adjusting screws on the first limiting beams at the front and rear ends of the first table drive the support blocks to rotate inward, thereby fixing the front and rear ends of the engineering plastic parts to be tested of different sizes. Then, the hydraulic cylinder is used to press the lower pressing piece onto the engineering plastic part to be tested from top to bottom. When pressed, the protective layer on the inner side of the stop block is attached to the right end of the first table (in the direction shown in the figure). The edge of the pull rope is fastened with the hook on the engineering plastic part to be tested. A suitable pull rope is needed. In practice, a pull rope with a reeling structure can be used to make the pull rope straight after use. The cylinder on the second table is used to drive the mobile frame to move. Since the mobile frame and the digital tensile gauge are fixedly installed, the digital tensile gauge is driven to move synchronously. If the engineering plastic part to be tested is broken during the process, it means that the tension value does not meet the standard. In addition, when the cylinder pulls the digital tensile gauge to a fixed position, the tension value is read and compared to determine whether the engineering plastic part to be tested is qualified.

[0041] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0042] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An engineering plastic tensile testing device, characterized in that: It includes a pressing component for vertically limiting the engineering plastic part to be tested, a clamping component for horizontally limiting the engineering plastic part to be tested, and a testing component for detecting the engineering plastic part to be tested; The pressing assembly includes a hydraulic cylinder, a pressing piece is connected below the hydraulic cylinder, and the pressing piece includes a stopper for preventing the engineering plastic part to be tested from moving toward the test assembly; The clamping assembly includes a first limiting beam mounted on a first table, the first limiting beam being mounted on both the front and rear sides of the first table, a plurality of equally spaced adjusting screws being mounted on the first limiting beam, and a stop block being mounted on one end of the adjusting screw facing the middle; during assembly, the engineering plastic part to be tested is placed on the first table and clamped by the stop block; The test assembly includes a second table, a cylinder is provided on the side of the second table away from the first table, the telescopic rod of the cylinder is arranged toward the direction of the first table, a movable frame is installed on the second table, the movable frame is fixedly connected to the telescopic rod of the cylinder, a digital dynamometer is fixedly installed on the inner side of the movable frame, and a pull rope is connected to the test end of the digital dynamometer. During assembly, one side of the pull rope is hooked with the engineering plastic part to be tested, and during movement, the movable frame moves in a linear motion.

2. The engineering plastic tensile testing device according to claim 1, characterized in that: The pressing member includes a lifting rod directly connected to the hydraulic cylinder, the stopper is installed at the front end of the pressing plate and is perpendicular to the pressing plate, the pressing member contains at least two or more pressing plates, and several of the pressing plates are connected by chain plates.

3. The engineering plastic tensile testing device according to claim 2, characterized in that: The middle parts of the plurality of pressing plates are commonly connected with the chain plate, and the middle chain plate is fixedly connected to the lifting rod.

4. The engineering plastic tensile testing device according to claim 1, characterized in that: The abutting block is detachably mounted on the top end of the adjusting screw.

5. The engineering plastic tensile testing device according to claim 4, characterized in that: The abutting block and the adjusting screw are fastened by means of threaded connection or clamping.

6. The engineering plastic tensile testing device according to claim 1, characterized in that: The movable frame is made of a transparent acrylic plate.

7. The engineering plastic tensile testing device according to claim 1, characterized in that: The end of the pull rope facing the engineering plastic part to be tested is provided with a hook.

8. The engineering plastic tensile testing device according to claim 1, characterized in that: The front and rear ends of the second table are provided with second limiting beams, and the movable frame is provided with guide rods, which are respectively stuck in the sliding grooves of the second limiting beams at the front and rear ends and slide, and the guide rods are arranged perpendicular to the telescopic rods.

9. The engineering plastic tensile testing device according to claim 1, characterized in that: The side of the pressing plate and the stopper facing the engineering plastic part to be tested is provided with a protective layer, and the side of the abutting block facing the engineering plastic part to be tested is also provided with a protective layer; when pressing, the protective layer inside the stopper is pressed against the edge of the first table.

10. The engineering plastic tensile testing device according to claim 9, characterized in that: The protective layer is made of rubber material.

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