Tensile testing device for plastic part

Abstract

The utility model provides a tensile testing device for plastic parts, which relates to the technical field of tensile testing and comprises a support frame, a second guide box is fixedly mounted between the inner walls of two sides of the support frame, a first guide box is fixedly mounted between the inner walls of two sides of the support frame, and the output end of a hydraulic cylinder is arranged on the upper surface of the first guide box. A worker pulls the guide rods, the two protection plates are pulled to the two sides of the supporting frame, a fixed plastic part is arranged between the two protection plates, the two protection plates are arranged on the two sides of the supporting frame, the two protection plates are arranged on the two sides of the supporting frame in a sliding mode, and therefore the plastic part can be fixed conveniently. By rotating the guide rod, the threaded sleeve is arranged in the threaded groove in a meshed mode to achieve a positioning effect on the two protection plates, and the fixed plastic part is arranged between the two protection plates, so that the situation that fragments splash everywhere when the plastic part is subjected to a tensile test can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of tensile testing, in particular to a plastic part tensile testing device. Background Art

[0002] Plastics are widely used and are indispensable components in household appliances, automobiles, mobile phones, PCs, medical equipment, and lighting appliances. After the production of plastic parts is completed, the plastics need to be subjected to a tensile test, such as patent application number CN201720056626.3, a plastic composite pipe tensile strength testing mechanism, which includes a tensile testing machine and a plastic composite pipe. The proximal ends of the two ends of the plastic composite pipe are respectively connected to the electric fusion sleeve by heat fusion. The upper and lower ends of the tensile testing machine are respectively provided with a machine base connector, and the electric fusion sleeve is tightly equipped with a metal flange component. The machine base connector and the end of the plastic composite pipe are respectively provided with connecting holes, and the machine base connector and the plastic composite pipe are connected through the corresponding connecting holes by axle pins. The plastic composite pipe tensile strength testing mechanism obtained by the utility model fixes the two ends of the plastic composite pipe fused with electric fusion pipe fittings on the tensile testing machine, starts the tensile testing machine, and separates the electric fusion pipe fittings from the composite pipe, thereby measuring its tensile strength. Plastic parts are prone to cracking during tensile testing, and the cracked fragments will collapse on the staff, causing safety hazards. Utility Model Content

[0003] The main purpose of the utility model is to provide a plastic tensile testing device, which can effectively solve the problem that plastic parts are prone to cracking during tensile testing in the background art, and the cracked fragments may fall on the workers, causing safety hazards.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a plastic part tensile testing device, including a support frame, a second guide box is fixedly installed between the inner walls on both sides of the support frame, a first guide box is fixedly installed between the inner walls on both sides of the support frame, a hydraulic cylinder is fixedly installed on the inner wall surface of the support frame, the output end of the hydraulic cylinder is arranged on the upper surface of the first guide box, the inner surfaces of the second guide box and the first guide box are both slidably installed with a clamping plate, a protective component is arranged on the support frame, a screw thread sleeve is arranged on the second guide box, a screw is installed on the second guide box through the screw thread sleeve, one end of the screw is rotatably arranged on the surface of the clamping plate, and the two clamping plates are connected by a telescopic column.

[0005] Preferably, a mounting base plate is fixedly mounted on the lower end of the support frame, and a plurality of mounting holes are equidistantly penetrated through the mounting base plate.

[0006] Preferably, anti-slip strips are provided on the surfaces of the clamping plate, the second guide box and the first guide box that are close to each other.

[0007] Preferably, the inner surfaces of the second guide box and the first guide box are provided with slide grooves, and the lower ends of the clamping plates are fixedly mounted with sliders, which are slidably mounted inside the slide grooves.

[0008] Preferably, the protection component includes a through slot, and the through slot is penetrated and opened on the support frame.

[0009] Preferably, a slide rod is slidably installed inside the through slot, protective plates are fixedly installed at both ends of the slide rod, a guide rod is rotatably installed on the surface of the slide rod, and the guide rod moves through the through slot.

[0010] Preferably, the inner wall of the through groove and the side surface of the support frame are provided with threaded grooves, two mounting sleeves are installed in the middle of the guide rod, and threaded sleeves are fixedly installed on the surface of the mounting sleeves, and the threaded sleeves are meshedly arranged inside the threaded grooves.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) The plastic part to be tested is placed between the second guide box and the first guide box. The output end of the hydraulic cylinder is extended and retracted, and the first guide box is driven to move downward. The upper and lower ends of the plastic part are respectively arranged inside the second guide box and the first guide box. The screw rod is rotated to move forward in coordination with the screw rod sleeve. The two clamps can be pushed forward to fix the two ends of the plastic part between the clamps and the inner walls of the second guide box and the first guide box, thereby fixing the plastic part. This device can fix plastic parts of different specifications and test plastic parts of different specifications.

[0013] (2) When the staff pulls the guide rod, they can pull the slide rod and the two protective plates at the same time. The two protective plates are set on both sides of the support frame, and the fixed plastic part is set between the two protective plates. By rotating the guide rod and the threaded sleeve at the same time, the threaded sleeve is engaged and set inside the thread groove. Therefore, the guide rod can be positioned, and the two protective plates can be positioned to prevent the protective plates from being offset. Placing the fixed plastic part between the two protective plates can prevent the plastic part from splashing around during the tensile test and causing safety accidents, thereby improving the safety of the device. By extending and retracting the output end of the hydraulic cylinder, the first guide box can be driven to move upward, and the second guide box and the first guide box can be pulled to perform the tensile test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a plastic parts tensile testing device of the utility model;

[0015] Figure 2This is a test structure schematic diagram of a plastic parts tensile test device of the utility model;

[0016] Figure 3 This is a left-side structural schematic diagram of a plastic parts tensile testing device of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of a second guide box of a plastic part tensile testing device of the utility model;

[0018] Figure 5 This is a schematic diagram of a clamping plate structure of a plastic parts tensile testing device of the utility model;

[0019] Figure 6 This is a schematic diagram of the enlarged structure of point A of a plastic part tensile testing device of the present invention.

[0020] In the figure: 1. support frame; 2. mounting base plate; 3. mounting hole; 4. hydraulic cylinder; 5. first guide box; 6. second guide box; 7. telescopic column; 8. protection assembly; 801. protection plate; 802. guide rod; 803. threaded groove; 804. through groove; 805. slide rod; 806. mounting sleeve; 807. threaded sleeve; 9. screw rod and screw sleeve; 10. screw rod; 11. splint; 12. anti-slip strip; 13. slider; 14. slide groove. DETAILED DESCRIPTION

[0021] The following will be combined with 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 of 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.

[0022] like Figure 1 As shown, a tensile testing device for plastic parts comprises a support frame 1, a second guide box 6 is fixedly installed between the inner walls on both sides of the support frame 1, a first guide box 5 is fixedly installed between the inner walls on both sides of the support frame 1, a hydraulic cylinder 4 is fixedly installed on the inner wall surface of the support frame 1, the output end of the hydraulic cylinder 4 is arranged on the upper surface of the first guide box 5, a clamping plate 11 is slidably installed on the inner surfaces of the second guide box 6 and the first guide box 5, a protective component 8 is arranged on the support frame 1, a screw thread sleeve 9 is arranged on the second guide box 6, a screw 10 is installed on the second guide box 6 through the screw thread sleeve 9, one end of the screw 10 is rotatably arranged on the surface of the clamping plate 11, and the two clamping plates 11 are connected by a telescopic column 7.

[0023] like Figure 1As shown, a mounting base plate 2 is fixedly mounted on the lower end of the support frame 1, and a plurality of mounting holes 3 are evenly spaced through the mounting base plate 2 to facilitate mounting the device at a suitable position.

[0024] like Figure 4 As shown, the clamping plate 11 and the second guide box 6 and the first guide box 5 are all provided with anti-slip strips 12 on the sides close to each other, so as to provide better stability when clamping the plastic parts.

[0025] like Figure 4 , 5 As shown, the inner surfaces of the second guide box 6 and the first guide box 5 are both provided with a slide groove 14, and the lower end of the clamping plate 11 is fixedly installed with a slider 13, and the slider 13 is slidably installed in the slide groove 14. Sliding the slider 13 in the slide groove 14 can provide better stability when the clamping plate 11 moves.

[0026] like Figure 2 , 3 As shown in Figure 6, the protective component 8 includes a through slot 804, and the through slot 804 is penetrated and opened on the support frame 1. A slide rod 805 is slidably installed inside the through slot 804, and protective plates 801 are fixedly installed at both ends of the slide rod 805. A guide rod 802 is rotatably installed on the surface of the slide rod 805, and the guide rod 802 can move through the through slot 804. The inner wall of the through slot 804 and the side of the support frame 1 are provided with a threaded groove 803. Two mounting sleeves 806 are installed in the middle of the guide rod 802, and a threaded sleeve 807 is fixedly installed on the surface of the mounting sleeve 806. The threaded sleeve 807 is meshingly arranged inside the threaded groove 803.

[0027] The working principle of this plastic tensile testing device:

[0028] When in use, the staff first places the plastic part to be tested between the second guide box 6 and the first guide box 5. At this time, the output end of the hydraulic cylinder 4 is extended and retracted, and the first guide box 5 can be driven to move downward, and the upper and lower ends of the plastic part are respectively arranged inside the second guide box 6 and the first guide box 5. At this time, by rotating the screw rod 10, the screw rod 10 is moved forward in conjunction with the screw rod sleeve 9, and the two clamping plates 11 can be pushed forward to fix the two ends of the plastic part between the clamping plates 11 and the inner walls of the second guide box 6 and the first guide box 5, so as to fix the plastic part. This device can fix plastic parts of different specifications and test plastic parts of different specifications. After the plastic parts are fixed, the staff pulls the guide rod 802 and the slide rod 805 at the same time. It is capable of pulling two protective plates 801, setting the two protective plates 801 on both sides of the support frame 1, and setting the fixed plastic part between the two protective plates 801. By rotating the guide rod 802, the threaded sleeve 807 is rotated at the same time, and the threaded sleeve 807 is engaged and set inside the threaded groove 803. Therefore, it can play a role in positioning the guide rod 802, and can also play a role in positioning the two protective plates 801 to prevent the protective plates 801 from being offset. Setting the fixed plastic part between the two protective plates 801 can prevent the plastic part from splashing around during the tensile test and causing safety accidents, thereby improving the safety of the device. The output end of the hydraulic cylinder 4 is extended and retracted, and the first guide box 5 can be driven to move upward at this time, and the second guide box 6 and the first guide box 5 are pulled to perform the tensile test.

[0029] The above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A plastic tensile testing device, comprising a support frame (1), characterized in that: A second guide box (6) is fixedly installed between the inner walls on both sides of the support frame (1), a first guide box (5) is fixedly installed between the inner walls on both sides of the support frame (1), a hydraulic cylinder (4) is fixedly installed on the inner wall surface of the support frame (1), the output end of the hydraulic cylinder (4) is arranged on the upper surface of the first guide box (5), a clamping plate (11) is slidably installed on the inner surfaces of the second guide box (6) and the first guide box (5), a protective component (8) is arranged on the support frame (1), a screw thread sleeve (9) is arranged on the second guide box (6), a screw rod (10) is installed on the second guide box (6) through the screw thread sleeve (9), one end of the screw rod (10) is rotatably arranged on the surface of the clamping plate (11), and the two clamping plates (11) are connected by a telescopic column (7).

2. A plastic part tensile testing device according to claim 1, characterized in that: A mounting base plate (2) is fixedly mounted on the lower end of the support frame (1), and a plurality of mounting holes (3) are equidistantly penetrated through the mounting base plate (2).

3. A plastic part tensile testing device according to claim 1, characterized in that: The clamping plate (11) and the second guide box (6) and the first guide box (5) are each provided with an anti-slip strip (12) on the side close to each other.

4. A plastic part tensile testing device according to claim 1, characterized in that: The inner surfaces of the second guide box (6) and the first guide box (5) are both provided with a slide groove (14), and the lower end of the clamping plate (11) is fixedly mounted with a slider (13), and the slider (13) is slidably mounted inside the slide groove (14).

5. A plastic part tensile testing device according to claim 1, characterized in that: The protection component (8) comprises a through slot (804), and the through slot (804) is penetrated and opened on the support frame (1).

6. A plastic part tensile testing device according to claim 5, characterized in that: A slide bar (805) is slidably mounted inside the through slot (804), and protective plates (801) are fixedly mounted at both ends of the slide bar (805). A guide bar (802) is rotatably mounted on the surface of the slide bar (805), and the guide bar (802) movably passes through the through slot (804).

7. A plastic part tensile testing device according to claim 6, characterized in that: The inner wall of the through groove (804) and the side surface of the support frame (1) are both provided with a threaded groove (803); two mounting sleeves (806) are installed in the middle of the guide rod (802); a threaded sleeve (807) is fixedly installed on the surface of the mounting sleeve (806); and the threaded sleeve (807) is meshedly arranged inside the threaded groove (803).

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