A device for detecting chemical environment stress resistance of plastic products

Abstract

The utility model discloses a kind of chemical environment stress resistance detection devices for plastic products, including detection component and lifting assembly.Detection component is set on the lifting end of lifting assembly, can be lifted or descended under the driving of lifting assembly.Detection component includes detection box, and extrusion unit and two fixed units installed on detection box.Two fixed units are symmetrically arranged in detection box.Fixed unit includes support, joist, fastening screw and clamping frame.The utility model is extruded fixed to different sizes of plastic products by setting two free sliding joists cooperate two clamping frames.At the same time, by controlling hydraulic cylinder with pressing block descending, pressing block is continuously stressed to plastic product Detection operation, it can be adapted to different sizes of plastic product detection while it can be convenient to different sizes of plastic product to continuously stressed detection operation, and then the versatility of detection device can be enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of stress testing technology for plastic products, and specifically relates to a device for testing the chemical resistance stress of plastic products. Background Technology

[0002] Environmental stress cracking (ESC) refers to the phenomenon where plastic materials, under stress or strain below their yield point, are accelerated to crack by external or internal stresses and the influence of a chemical environment. This phenomenon significantly reduces the stress or strain level that allows the plastic to be used for a long time, adversely affecting the performance and service life of plastic products. For example, when plastic is subjected to stress or strain below its yield point, if external or internal stresses are present simultaneously, these stresses can work together to cause cracking, and the chemical environment in which the plastic is located will accelerate this cracking process.

[0003] To facilitate the testing of the strength of plastic products under chemical conditions, stress testing is required, necessitating the use of a testing device. However, existing testing devices are not suitable for continuous stress testing of plastic products of different sizes in a sealed environment, thus affecting the quality of stress testing. Therefore, it is necessary to provide a testing device that facilitates continuous testing of plastic products of different sizes and improves testing quality. Furthermore, the current testing device is not convenient for adjusting its height as needed, affecting its practicality. Therefore, it is necessary to provide a testing device that allows for height adjustment and enhances practicality. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a chemical environmental stress testing device for plastic products, thereby solving the technical problem that the testing device is not convenient for continuous testing of plastics of different sizes as needed.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0006] A chemical stress resistance testing device for plastic products includes a testing component and a lifting component. The testing component is mounted on the lifting end of the lifting component and can be raised or lowered by the lifting component. The testing component includes a testing box, an extrusion unit mounted on the testing box, and two fixing units. The two fixing units are symmetrically arranged inside the testing box.

[0007] The fixing unit includes a support, an I-beam, fastening screws, and a clamping frame. The support is fixed to the receiving plate. The I-beam is slidably connected to the support and can be locked in position or slide freely under the control of the fastening screws. The clamping frame is fixed to the end of the I-beam. The clamping frames in the two fixing units can be pushed together by the corresponding I-beams to form a clamp on the plastic product being tested.

[0008] The extrusion unit is mounted on the testing chamber. The force-applying end of the extrusion unit can rise or fall vertically, and applies pressure to the plastic product being tested when it falls.

[0009] Furthermore, the support has an I-shaped groove that mates with the I-beam plate. The outer end of the I-beam plate passes through the I-shaped groove and slides into it. The top of the support has a threaded tube that communicates with the I-shaped groove. The fastening screw is threaded into the threaded tube.

[0010] Furthermore, the lifting assembly includes a base plate, a top plate, a lifting drive assembly, and two lifting units disposed between the base plate and the top plate. The detection box is mounted on the top plate. The two lifting units are symmetrically arranged on the base plate and can drive the top plate to rise or fall under the drive of the lifting drive assembly, thereby driving the detection box to rise or fall.

[0011] Furthermore, the lifting unit includes a movable block, a drive shaft, and two inclined rods. The movable block is slidably connected to the base plate. The movable blocks in the two lifting units can move closer or further apart under the drive of the lifting drive assembly. The drive shaft is fixed to the movable block. The bottom of each inclined rod is rotatably engaged with the drive shaft, and the top is hinged to the top plate.

[0012] Furthermore, the lifting drive assembly includes a lead screw and a servo motor. The lead screw is fixed to the drive end of the servo motor and can rotate under the drive of the servo motor. The lead screw passes through two moving blocks and is threadedly engaged with the two moving blocks. The lead screw is divided into a first screw section and a second screw section with its center as the dividing point. The threads on the first screw section and the second screw section have opposite directions. The two moving blocks are respectively disposed on the first screw section and the second screw section.

[0013] Furthermore, each of the two lifting units has a hinge hole at the top of its inclined rods. Matching hinge seats are fixed at the four corners of the top plate. The hinge holes on each inclined rod are hinged to the corresponding hinge seats.

[0014] Furthermore, the extrusion unit includes a hydraulic cylinder and a pressure block. The hydraulic cylinder is fixed to the top surface of the testing box and located directly above the area between the two fixed units. The pressure block is mounted on the telescopic end of the hydraulic cylinder.

[0015] Furthermore, a limiting frame that cooperates with a hydraulic cylinder is fixed to the top surface of the testing box. The hydraulic cylinder is installed inside the limiting frame, and its telescopic end at the bottom extends into the testing box.

[0016] Furthermore, the detection assembly also includes a receiving plate. Two fixing units are symmetrically fixed on the receiving plate. Multiple positioning holes are formed on the inner bottom surface of the detection box. Positioning rods that mate with the positioning holes are fixed at the four corners of the receiving plate. Each positioning rod is inserted into its corresponding positioning hole.

[0017] Furthermore, the testing box has a box structure that is open on one side. Two sealing plates are slidably installed at the opening of the testing box.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. This utility model uses two freely sliding I-beam plates in conjunction with two clamping frames to compress and fix plastic products of different sizes. Simultaneously, by controlling a hydraulic cylinder to lower the pressure block, the pressure block continuously monitors the stress on the plastic product. This allows the device to adapt to the testing of plastic products of different sizes while facilitating continuous stress monitoring, thus enhancing the versatility of the testing device.

[0020] 2. This utility model uses two movable blocks in conjunction with several inclined rods. The two movable blocks can move closer or further apart under the drive of the lifting drive assembly, thereby adjusting the tilt angle between the inclined rods and the base plate, realizing the lifting and lowering adjustment of the testing box. This allows the staff to adjust the overall height of the testing device as needed, thus enhancing the practicality of the testing device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is an anatomical diagram of the detection box structure of this utility model;

[0023] Figure 3 This is a disassembled diagram of the detection component structure of this utility model;

[0024] Figure 4 This is an anatomical diagram of the hydraulic cylinder structure of this utility model;

[0025] Figure 5 This is a structural disassembly diagram of the lifting component of this utility model.

[0026] Reference numerals: 100, Detection component; 101, Detection box; 102, Control system; 103, Sealing plate; 104, Receiving plate; 105, Support; 106, I-beam groove; 107, I-beam plate; 108, Clamping frame; 109, Hydraulic cylinder; 110, Pressure block; 111, Limiting frame; 112, Positioning hole; 113, Positioning rod; 121, Slide groove; 122, Slide bar; 131, Screw; 132, Fastening screw; 141, Limiting groove; 142, Limiting shaft; 200, Lifting component; 201, Base plate; 202, Top plate; 203, Diagonal bar; 204, Transmission shaft; 205, Moving block; 206, Lead screw; 207, Servo motor; 211, Hinge seat; 212, Hinge hole; 221, Guide groove; 222, Guide block. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] like Figure 1 and 2 As shown, a chemical stress resistance testing device for plastic products includes a testing component 100 and a lifting component 200. The testing component 100 is mounted on the lifting end of the lifting component 200 and can be raised or lowered by the lifting component 200, allowing the operator to adjust the height of the testing device. This facilitates the installation of the workpiece under test and enhances the practicality of the testing device.

[0030] like Figure 3 As shown, the testing assembly 100 includes a testing box 101, a receiving plate 104 mounted on the testing box 101, an extrusion unit, and two fixing units. The receiving plate 104 is detachably fixed inside the testing box 101. The two fixing units are symmetrically arranged on the receiving plate 104 and are capable of clamping the plastic product being tested. The extrusion unit is used to apply downward pressure to the plastic product being tested.

[0031] Specifically, the fixing unit includes a support 105, an I-beam 107, fastening screws 132, and a clamping frame 108. The support 105 is fixed to the receiving plate 104. The I-beam 107 is slidably connected to the support 105 and can be locked in position or slide freely under the control of the fastening screws 132. The clamping frame 108 is fixed to the end of the I-beam 107. The clamping frames 108 in the two fixing units move towards the center under the action of the corresponding I-beams 107, clamping the plastic product being tested, and locking the position of each I-beam 107 using the fastening screws 132.

[0032] In this embodiment, the support 105 has an I-shaped groove 106 that mates with the I-beam plate 107. The outer end of the I-beam plate 107 passes through the I-shaped groove 106 and slides in contact with it. The top of the support 105 has a threaded tube 131 that communicates with the I-beam groove 106. A fastening screw 132 is threaded into the threaded tube 131, and by turning the fastening screw 132, the sliding of the I-beam plate 107 can be locked or unlocked.

[0033] like Figure 3 and 4 As shown, the extrusion unit includes a hydraulic cylinder 109 and a pressure block 110. The hydraulic cylinder 109 is fixed to the top surface of the testing box 101 and located directly above the area between the two fixed units. The pressure block 110 is mounted on the telescopic end of the hydraulic cylinder 109 and can press down under the action of the hydraulic cylinder 109, thereby applying pressure to the plastic product being tested, facilitating stress analysis by the operator.

[0034] Furthermore, a limiting frame 111 that mates with the hydraulic cylinder 109 is fixed to the top surface of the testing box 101. The hydraulic cylinder 109 is installed inside the limiting frame 111, with its telescopic end extending into the testing box 101. The limiting frame 111 surrounds and limits the hydraulic cylinder 109, improving its stability during operation. Multiple positioning holes 112 are provided on the inner bottom surface of the testing box 101. Positioning rods 113 that mate with the positioning holes 112 are fixed at the four corners of the receiving plate 104. Each positioning rod 113 is inserted into its corresponding positioning hole 112, ensuring the stability of the receiving plate 104 within the testing box 101 and facilitating quick assembly and disassembly of the receiving plate 104 as needed.

[0035] In this embodiment, the testing box 101 is a box structure with one side open. Two sealing plates 103 are slidably disposed at the opening of the testing box 101 to allow the opening to be opened or closed. Specifically, grooves 121 are provided at the top and bottom of the opening of the testing box 101. Sliding strips 122 are fixed to the top and bottom edges of the sealing plates 103. The sliding strips 122 are slidably connected in the corresponding grooves 121.

[0036] like Figure 5 As shown, the lifting assembly 200 includes a base plate 201, a top plate 202, a lifting drive assembly, and two lifting units disposed between the base plate 201 and the top plate 202. The two lifting units are symmetrically arranged on the base plate 201 and can, under the drive of the lifting drive assembly, raise or lower the top plate 202, thereby driving the detection box 101 to rise or fall.

[0037] Specifically, the lifting unit includes a movable block 205, a drive shaft 204, and two inclined rods 203. The movable block 205 is slidably connected to the base plate 201. The movable blocks 205 in the two lifting units can move closer or further apart under the drive of the lifting drive assembly. The drive shaft 204 is fixed to the movable block 205. The bottom of each inclined rod 203 is rotatably engaged with the drive shaft 204, and the top is hinged to the corresponding corner of the top plate 202. In use, the movable blocks 205 in the two lifting units move closer or further apart under the drive of the lifting drive assembly, thereby adjusting the tilt angle between the inclined rods 203 and the top plate 202, facilitating the adjustment of the height of the top plate 202 and its upper detection component 100.

[0038] In this embodiment, each of the inclined rods 203 in the two lifting units has a hinge hole 212 at its top. A matching hinge seat 211 is fixed at each of the four corners of the top plate 202. The hinge hole 212 on each inclined rod 203 is hinged to the corresponding hinge seat 211. The hinge between the hinge hole 212 and the hinge seat 211 improves the smoothness and convenience of adjusting the angle of the inclined rod 203.

[0039] Furthermore, a guide groove 221 is provided on the top surface of the base plate 201, and guide blocks 222 that cooperate with the guide groove 221 are fixed at the bottom of the two moving blocks 205. The guide blocks 222 are slidably connected inside the guide groove 221.

[0040] The lifting drive assembly includes a lead screw 206 and a servo motor 207. The lead screw 206 is fixed to the drive end of the servo motor 207 and can rotate under the drive of the servo motor 207. The lead screw 206 passes through two moving blocks 205 and is threadedly engaged with the two moving blocks 205. The lead screw 206 is divided into a first screw section and a second screw section with its center as the dividing point. The threads on the first screw section and the second screw section have opposite directions. The two moving blocks 205 are respectively disposed on the first screw section and the second screw section.

[0041] When the servo motor 207 drives the lead screw 206 to rotate, it will cause the two moving blocks 205 set on the first screw part and the second screw part to move closer or further apart from each other, and cooperate with each inclined rod 203 to realize the rise or fall of the top plate 202.

[0042] In some embodiments, a control system 102 is provided on the side of the detection box 101 for controlling the extension and retraction of the telescopic end in the hydraulic cylinder 109, as well as the forward or reverse rotation of the servo motor 207.

[0043] The working principle of this utility model is as follows:

[0044] In use, the servo motor 207 is started first, and the lead screw 206 is rotated clockwise or counterclockwise to control the two moving blocks 205 to move closer or further away from each other along the lead screw 206. This allows the tilt angle between several inclined rods 203 and the top plate 202 to be adjusted, and in turn, the height of the top plate 202 and its upper detection component 100 can be adjusted.

[0045] Subsequently, plastic products of different sizes are placed in the testing box 101, while the two I-beams 107 are controlled to move closer or further apart, thereby adjusting the distance between the two clamping frames 108 to clamp the plastic products of different sizes. At this time, the hydraulic cylinder 109 is controlled to lower the pressure block 110, allowing for continuous stress testing of the plastic products. This ensures testing quality and enhances the practicality of the testing device.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for testing the chemical resistance stress of plastic products, characterized in that: It includes a detection component (100) and a lifting component (200); the detection component (100) is disposed on the lifting end of the lifting component (200) and can be raised or lowered under the drive of the lifting component (200); the detection component (100) includes a detection box (101), and a pressing unit and two fixing units installed on the detection box (101); the two fixing units are symmetrically arranged inside the detection box (101); The fixing unit includes a support (105), an I-beam (107), a fastening screw (132), and a clamping frame (108); the support (105) is fixed on the receiving plate (104); the I-beam (107) is slidably connected to the support (105) and can be locked in position or slide freely under the control of the fastening screw (132); the clamping frame (108) is fixed at the end of the I-beam (107); the clamping frames (108) in the two fixing units can move towards the middle under the push of the corresponding I-beam (107) to form a clamping of the plastic product being tested; The extrusion unit is installed on the test box (101); the force-applying end of the extrusion unit can rise or fall in the vertical direction, and applies pressure to the plastic product being tested when it falls.

2. The chemical environmental stress testing device for plastic products according to claim 1, characterized in that: The support (105) has an I-shaped groove (106) that mates with the I-shaped plate (107); the outer end of the I-shaped plate (107) passes through the I-shaped groove (106) and slides with the I-shaped groove (106); the top of the support (105) has a threaded tube (131) that communicates with the I-shaped groove (106); the fastening screw (132) is threaded into the threaded tube (131).

3. The chemical environmental stress testing device for plastic products according to claim 1, characterized in that: The lifting assembly (200) includes a base plate (201), a top plate (202), a lifting drive assembly, and two lifting units disposed between the base plate (201) and the top plate (202); the detection box (101) is installed on the top plate (202); the two lifting units are symmetrically disposed on the base plate (201) and can drive the top plate (202) to rise or fall under the drive of the lifting drive assembly, thereby driving the detection box (101) to rise or fall.

4. The chemical environmental stress testing device for plastic products according to claim 3, characterized in that: The lifting unit includes a movable block (205), a drive shaft (204), and two inclined rods (203); the movable block (205) is slidably connected to the base plate (201); the movable blocks (205) in the two lifting units can move closer or further apart under the drive of the lifting drive assembly; the drive shaft (204) is fixed on the movable block (205); the bottom of each inclined rod (203) is rotatably engaged with the drive shaft (204), and the top is hinged to the top plate (202).

5. The chemical environmental stress testing device for plastic products according to claim 4, characterized in that: The lifting drive assembly includes a lead screw (206) and a servo motor (207); the lead screw (206) is fixed on the drive end of the servo motor (207) and can rotate under the drive of the servo motor (207); the lead screw (206) passes through two moving blocks (205) and is threadedly engaged with the two moving blocks (205); the lead screw (206) is divided into a first screw section and a second screw section with the center as the dividing point; the thread directions on the first screw section and the second screw section are opposite; the two moving blocks (205) are respectively set on the first screw section and the second screw section.

6. The chemical environmental stress testing device for plastic products according to claim 4, characterized in that: The top of each of the two lifting units has a hinge hole (212); the four corners of the top plate (202) are fixed with matching hinge seats (211); the hinge holes (212) on each of the two lifting units are hinged to the corresponding hinge seats (211).

7. The chemical environmental stress testing device for plastic products according to claim 1, characterized in that: The extrusion unit includes a hydraulic cylinder (109) and a pressure block (110); the hydraulic cylinder is fixed on the top surface of the detection box (101) and located directly above the area between the two fixed units; the pressure block (110) is installed on the telescopic end of the hydraulic cylinder.

8. A chemical environmental stress testing device for plastic products according to claim 7, characterized in that: The top surface of the test box (101) is fixed with a limiting frame (111) that cooperates with the hydraulic cylinder (109); the hydraulic cylinder (109) is installed in the limiting frame (111), and the telescopic end at the bottom extends into the test box (101).

9. A chemical environmental stress testing device for plastic products according to claim 1, characterized in that: The detection assembly (100) also includes a receiving plate (104); two fixing units are symmetrically fixed on the receiving plate (104); multiple positioning holes (112) are opened on the inner bottom surface of the detection box (101); positioning rods (113) that cooperate with the positioning holes (112) are fixed at the four corners of the receiving plate (104); each positioning rod (113) is inserted into the corresponding positioning hole (112).

10. A chemical environmental stress testing device for plastic products according to claim 1, characterized in that: The testing box (101) is a box structure with one side open; two sealing plates (103) are slidably installed at the opening of the testing box (101).

Images