Tear resistance testing device for silicon resin glass fiber sleeve

Abstract

The utility model relates to the technical field of glass fiber tube testing, in particular to a silicon resin glass fiber sleeve tear resistance testing device which comprises a base, an L-shaped plate is fixedly connected to the top of the base, two tearing mechanisms are arranged on the top face of the base, and each tearing mechanism comprises a guide frame fixedly connected with the base. A lead screw is rotatably connected to the interior of the guide frame, two first extrusion rods are in transmission with the outer side of the lead screw in a screwing mode, the first extrusion rods can expand the glass fiber sleeve outwards from the inner side of the glass fiber sleeve, and the first extrusion rods are slidably connected with the guide frame. According to the device, after the glass fiber sleeve is connected to the outer sides of the two first extrusion rods in a sleeving mode, the two first extrusion rods move in the opposite directions through rotation of the lead screw, so that the two first extrusion rods extrude the glass fiber sleeve outwards from the interior of the glass fiber sleeve, and the effect of internal expansion force on the sleeve is simulated; and testing the performance of the glass fiber sleeve for resisting the tearing of the internal expansive force.

Description

Technical Field

[0001] This utility model relates to the field of glass fiber tube testing technology, specifically a tear resistance testing device for silicone resin glass fiber sleeves. Background Technology

[0002] Silicone resin fiberglass sleeving is an insulating material made by weaving high-purity alkali-free glass fiber into a tube, then impregnating it with silicone resin and curing it. During the production and processing of silicone resin fiberglass sleeving, a sample tube is usually taken out for tear resistance testing. The tear resistance test can identify potential problems in the production process, such as insufficient weaving density or uneven coating, thereby optimizing the production process and improving product quality.

[0003] The commonly used method for tear resistance is to use a clamp to hold the end of the sleeve, and then tension the sleeve in opposite directions according to a preset tension force. The sleeve's tear resistance is then evaluated by observing whether the outer side of the sleeve breaks. In practical applications, the pressure or expansion force that the sleeve may experience inside is one of its main stress forms. However, the tension test at both ends cannot simulate the effect of this internal expansion force on the sleeve. Furthermore, the sleeve's two ends are clamped inside the clamp, which makes it inconvenient to test the tear resistance of the sleeve ends. Utility Model Content

[0004] The purpose of this invention is to provide a tear resistance testing device for silicone resin fiberglass sleeves to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tear resistance testing device for silicone resin fiberglass sleeves includes:

[0007] A base, the top of which is fixedly connected to an L-shaped plate;

[0008] Two tearing mechanisms are provided to tension the fiberglass sleeve from the inside and the port of the fiberglass sleeve. The tearing mechanism includes a guide frame fixedly connected to the base. A lead screw is rotatably connected inside the guide frame. Two extrusion rods are screwed to the outside of the lead screw. The extrusion rods are slidably connected to the guide frame. An extrusion rod is hinged to the top of the extrusion rods.

[0009] The driving mechanism is slidably connected to the L-shaped plate and can drive the two extrusion rods to move in opposite directions. The driving mechanism includes a movable base, an electric push rod is fixedly connected to the bottom of the movable base, and a conical block is fixedly connected to the output end of the electric push rod.

[0010] The controller, fixedly connected to the L-shaped plate, is capable of controlling the opening and closing of electrical equipment on the testing device.

[0011] Furthermore, a support plate is fixed to the outer side of the extrusion rod, and the support plate can support the bottom surface of the fiberglass sleeve.

[0012] Furthermore, a slider is fixed to the top of the movable seat, and the slider is slidably engaged with the L-shaped plate.

[0013] Furthermore, the bottom of the extrusion rod is fixed with a transmission seat that is slidably connected to the guide frame, and the transmission seat is screwed into the lead screw.

[0014] Furthermore, one end of the guide frame is fixed with a motor capable of driving the lead screw to rotate, and the lead screw is a bidirectional lead screw.

[0015] Furthermore, both the extrusion rod one and the extrusion rod two are semi-cylindrical structures, and the top of the extrusion rod two is provided with a conical groove that is adapted to be inserted into the conical block.

[0016] Furthermore, magnets are embedded in the inner sides of both extrusion rods, and the two magnets are opposite magnets.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. A bidirectional lead screw is rotatably connected inside the guide frame. Two extrusion rods that can be spliced ​​to form a columnar structure are screwed onto the outside of the lead screw. When the two extrusion rods are combined into a columnar rod, the fiberglass sleeve is fitted onto the outside of the columnar rod. The rotation of the lead screw drives the two extrusion rods to move in opposite directions, thereby causing the extrusion rods to expand the fiberglass sleeve from the inside, thus simulating the effect of internal expansion force on the sleeve. This allows for convenient and efficient testing of the tear resistance of the fiberglass sleeve.

[0019] 2. By hinged to the top of the first extrusion rod, the second extrusion rod, which can only rotate outward, is connected to the top of the first extrusion rod. After the fiberglass sleeve is fitted onto the outside of the two first extrusion rods, the top opening of the fiberglass sleeve is on the outside of the two second extrusion rods. The output end of the electric push rod, carrying a conical block, is gradually inserted into the conical groove between the two second extrusion rods. As the conical block moves down, the two second extrusion rods rotate outward and expand. During the outward rotation and expansion of the second extrusion rod, the opening of the fiberglass sleeve is expanded, which facilitates the testing of the tear resistance performance of the fiberglass sleeve opening.

[0020] 3. By arranging two tearing mechanisms on the base, each of which can be fitted with a fiberglass sleeve, when the drive mechanism drives one tearing mechanism to perform a tear test on the fiberglass sleeve opening, the other tearing mechanism can perform an outward expansion tear resistance test on the inside of the fiberglass sleeve, thereby realizing that the two sleeves can simultaneously perform tear resistance tests in different directions. Attached Figure Description

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

[0022] Figure 2 This is a schematic diagram of the structure of the driving mechanism driving the extrusion rod II to move in this utility model;

[0023] Figure 3 This is a schematic diagram of the tearing mechanism in this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the two extrusion rods moving in opposite directions in this utility model;

[0025] Figure 5 This is a utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0026] In the diagram: 100, base; 110, L-shaped plate; 200, tearing mechanism; 210, guide frame; 211, motor; 220, lead screw; 230, extrusion rod one; 231, transmission seat; 232, support plate; 240, extrusion rod two; 241, conical groove; 242, magnet; 300, drive mechanism; 310, moving seat; 311, slider; 320, electric push rod; 330, conical block; 400, controller. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1, please refer to Figure 1 - Figure 5In this embodiment of the invention, a tear resistance testing device for silicone resin fiberglass sleeve includes a base 100. An L-shaped plate 110 is fixedly connected to the top of the base 100. Two tearing mechanisms 200 are provided on the top surface of the base 100. Each tearing mechanism 200 includes a guide frame 210 fixedly connected to the base 100. A lead screw 220 is rotatably connected inside the guide frame 210. The outer side of the lead screw 220 drives two compression rods 230. The compression rods 230 can expand the fiberglass sleeve from the inside out. 30 is slidably connected to the guide frame 210. The top of the first extrusion rod 230 is hinged to the second extrusion rod 240, which can tension the port of the fiberglass sleeve. The bottom of the L-shaped plate 110 is slidably connected to the drive mechanism 300. The drive mechanism 300 includes a movable seat 310. The bottom of the movable seat 310 is fixedly connected to an electric push rod 320. The output end of the electric push rod 320 is fixedly connected to a conical block 330. The outer side of the L-shaped plate 110 is fixedly connected to a controller 400 that can control the opening and closing of the electrical equipment on the test device.

[0029] Specifically, the tear resistance testing device is designed as two compression rods 230 that can be spliced ​​together to form a cylindrical shape. After the fiberglass sleeve is fitted onto the outside of the two compression rods 230, the screw 220 is rotated to move the two compression rods 230 in opposite directions. This causes the two compression rods 230 to squeeze the fiberglass sleeve from the inside out, simulating the effect of internal expansion force on the fiberglass sleeve and testing the fiberglass sleeve's resistance to tearing by internal expansion force. A second compression rod 240 is hinged to the top of the compression rods 230. The output end of the electric push rod 320, with a conical block 330, is inserted between the two compression rods 240, allowing the two compression rods 240 to move in opposite directions. This allows the two compression rods 240 to squeeze the opening of the fiberglass sleeve, testing the fiberglass sleeve's resistance to tearing by the expansion force at the opening.

[0030] like Figure 1 As shown, in this embodiment, a support plate 232 is fixedly connected to the bottom outer side of the extrusion rod 230. The support plate 232 can support the bottom surface of the fiberglass sleeve. After the fiberglass sleeve is sleeved on the outside of the extrusion rod (including extrusion rod 230 and extrusion rod 240), the support plate 232 can support the bottom surface of the fiberglass sleeve to prevent the fiberglass sleeve from moving down and contacting the guide frame 210.

[0031] like Figure 2As shown, in this embodiment, a slider 311 is fixed to the top of the movable seat 310, and a groove is provided on the bottom surface of the L-shaped plate 110. The slider 311 is slidably engaged with the groove. The user can move the movable seat 310 left and right, which can move the movable seat 310 with the electric push rod 320 left and right. This allows the electric push rod 320 to move the conical block 330 left and right above the different tearing mechanisms 200, so that the output end of the electric push rod 320 can move the conical block 330 down to drive the two extrusion rods 240 to rotate outward and unfold.

[0032] like Figure 3 As shown, in this embodiment, a notch is provided at one end of the extrusion rod 230 and the extrusion rod 240 that are in contact with each other. The extrusion rod 230 and the extrusion rod 240 are rotatably connected at the notch position by a hinge, so that the two extrusion rods 240 can rotate outward to extrude the opening of the fiberglass sleeve.

[0033] like Figure 3 and Figure 5 As shown, in this embodiment, magnets 242 are embedded in the inner sides of both extrusion rods 240. The two magnets 242 are opposite magnets. In the initial state, the two extrusion rods 230 are close together and the two extrusion rods 240 are close together, which makes it convenient to put the fiberglass sleeve to be torn into the outside of the extrusion rods. During this process, the two opposite magnets 242 attract each other to prevent the two extrusion rods 240 from accidentally unfolding automatically before the fiberglass sleeve is put into place. Later, the drive mechanism 300 overcomes the attraction force of the magnets 242 and pushes the two extrusion rods 230 apart to carry out the tear test.

[0034] like Figure 3 As shown, in this embodiment, the bottom of the extrusion rod 230 is fixed with a transmission seat 231 that is slidably connected to the guide frame 210. The transmission seat 231 is screwed to the lead screw 220. One end of the guide frame 210 is fixedly connected with a motor 211 that can drive the lead screw 220 to rotate. The lead screw 220 is a bidirectional lead screw 220.

[0035] In this embodiment, the motor 211 drives the lead screw 220 to rotate in both directions, which can make the two transmission seats 231 move closer to each other or move away from each other, thereby making the two transmission seats 231 move closer to each other or away from each other with the two pressing rods 230 on their tops.

[0036] like Figure 2 and Figure 5As shown, in this embodiment, both the first extrusion rod 230 and the second extrusion rod 240 are semi-cylindrical structures. The top of the second extrusion rod 240 is provided with a conical groove 241 that is adapted to be inserted into the conical block 330. In the initial state, the conical groove 241 makes it easy for the conical block 330 to be easily inserted into the position between the two second extrusion rods 240. As the conical block 330 moves down, the degree to which the two second extrusion rods 240 expand outward increases, and thus the tearing force applied to the glass fiber sleeve port increases.

[0037] like Figure 1 As shown, in this embodiment, the controller 400 can automatically control the working state of the electric push rod 320 and the motor 211. The specific automated control is existing technology and will not be described in detail here.

[0038] In this invention, displacement sensors, a component of existing technology, can be installed inside both the conical block 330 and the transmission seat 231. The displacement sensor inside the conical block 330 allows the controller 400 to know the distance the conical block 330 falls, and thus control the force of the two extrusion rods 240 to tear the fiberglass sleeve by controlling the falling distance of the conical block 330. Similarly, the displacement sensor inside the transmission seat 231 helps the controller 400 to know the distance the transmission seat 231 moves, and indirectly regulates the force of the transmission seat 231 in expanding and tearing the fiberglass sleeve by controlling the moving distance of the transmission seat 231. This enables the testing device to test the fiberglass sleeve with a preset tearing force, preventing excessive testing force from directly damaging the fiberglass sleeve. The specific tearing force can be determined according to the specific tear resistance standard. The combination of displacement sensors and controller 400 to control the testing force can be implemented using existing technology, which will not be described in detail here.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tear resistance testing device for silicone resin fiberglass sleeves, characterized in that, include: The base (100) has an L-shaped plate (110) fixedly connected to its top. Two tearing mechanisms (200) are provided, capable of tensioning the fiberglass sleeve from the inside and the port of the fiberglass sleeve. The tearing mechanism (200) includes a guide frame (210) fixedly connected to the base (100). A lead screw (220) is rotatably connected inside the guide frame (210). Two extrusion rods (230) are screwed to the outside of the lead screw (220). The extrusion rods (230) are slidably connected to the guide frame (210). An extrusion rod (240) is hinged to the top of the extrusion rods (230). The drive mechanism (300) is slidably connected to the L-shaped plate (110) and can drive the two extrusion rods (240) to move in opposite directions. The drive mechanism (300) includes a movable seat (310), an electric push rod (320) is fixedly connected to the bottom of the movable seat (310), and a conical block (330) is fixedly connected to the output end of the electric push rod (320). The controller (400) is fixedly connected to the L-shaped plate (110) and can control the opening and closing of electrical equipment on the test device.

2. The tear resistance testing device for silicone resin fiberglass sleeves according to claim 1, characterized in that, A support plate (232) is fixed to the outside of the extrusion rod (230), and the support plate (232) can support the bottom surface of the fiberglass sleeve.

3. The tear resistance testing device for silicone resin fiberglass sleeves according to claim 1, characterized in that, A slider (311) is fixed to the top of the movable seat (310), and the slider (311) is slidably engaged with the L-shaped plate (110).

4. The tear resistance testing device for silicone resin fiberglass sleeves according to claim 1, characterized in that, The bottom of the extrusion rod (230) is fixed with a transmission seat (231) that is slidably connected to the guide frame (210), and the transmission seat (231) is screwed into the lead screw (220).

5. The tear resistance testing device for silicone resin fiberglass sleeves according to claim 4, characterized in that, One end of the guide frame (210) is fixed with a motor (211) that can drive the lead screw (220) to rotate. The lead screw (220) is a bidirectional lead screw (220).

6. The tear resistance testing device for silicone resin fiberglass sleeves according to claim 5, characterized in that, Both extrusion rod one (230) and extrusion rod two (240) are semi-cylindrical structures. The top of extrusion rod two (240) is provided with a conical groove (241) that is adapted to be inserted into the conical block (330).

7. The tear resistance testing device for silicone resin fiberglass sleeves according to claim 6, characterized in that, Magnets (242) are embedded in the inner side of both extrusion rods (240), and the two magnets (242) are opposite magnets.

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