Equipment for testing sealing performance of power wire

Abstract

The invention, which relates to the technical field of wire testing, discloses a power wire sealing performance testing device comprising a testing platform, the upper part of the testing platform is fixedly provided with a protective cover, the interior of the protective cover is fixedly provided with a cylinder support, and the front surface of the cylinder support is symmetrically provided with press-fit sealing driving cylinders. The telescopic end of the press-fit sealing driving air cylinder and the upper portion of the test platform are jointly provided with a test mold, and an air pump for injecting air into the test mold is installed in the equipment bearing support. According to the equipment for testing the sealing performance of the power wire, an absolutely-sealed testing environment is created for the power wire in a mold closing mode during testing, then air with rated air pressure is introduced into the testing environment, and whether the air pressure of the sealed testing environment is constant within rated time or not is detected in real time through a sensor; and otherwise, the testing process is simple and is convenient to use, and the testing device is convenient to popularize and use.

Description

Technical Field

[0001] The present invention relates to the technical field of wire testing, and particularly to a testing device for the airtight performance of power supply wires. Background Art

[0002] After the production and processing of power supply wires, it is necessary to test various aspects of the power supply wires. One of them is the testing item for the airtightness of the power supply wires. Because after the power supply wires are put into use, water or air is not allowed to enter the inside of the power supply wires. When water or humid air enters the power supply wires, on the one hand, it causes great damage to the internal structure of the power supply wires, and on the other hand, it is extremely easy to cause a short circuit of the power supply wires. Especially for the joints (terminals) of the power supply wires, there are relatively easy problems with unqualified airtightness. For this reason, technicians in this field have proposed a testing device for the airtight performance of power supply wires. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a testing device for the airtight performance of power supply wires, which solves the problems put forward in the above background art.

[0004] To achieve the above purposes, the present invention is realized through the following technical solutions: A testing device for the airtight performance of power supply wires includes a device bearing bracket and a testing platform fixedly installed on the upper part of the device bearing bracket. A protective cover is fixedly installed on the upper part of the testing platform. A cylinder bracket is fixedly installed inside the protective cover. Pressing and sealing driving cylinders are symmetrically installed on the front surface of the cylinder bracket. A testing mold is jointly installed on the telescopic end of the pressing and sealing driving cylinder and the upper part of the testing platform. There are at least two groups of the testing molds, and each group is used to test power supply wires of different specifications. A digital display control panel for controlling the entire device and an air pump for injecting gas into the testing mold are respectively fixedly installed inside the device bearing bracket. An electromagnetic valve is fixedly installed on the back of the protective cover. A first air pipe is jointly connected between the air outlet of the air pump and the air inlet of the electromagnetic valve. The electromagnetic valve has several air outlets, and a second air pipe is connected between each air outlet and the air inlet of the corresponding testing mold.

[0005] Further, there is an opening on the front surface of the protective cover, and safety light curtains for protection during the testing process are fixedly installed on both sides of the opening. A through hole is opened on the back of the protective cover, and the second air pipe extends into the protective cover from the through hole.

[0006] Further, the testing mold includes a lower mold base fixedly installed on the upper part of the testing platform and an upper mold base fixedly installed on the telescopic end of the pressing and sealing driving cylinder. An air injection receptor is fixedly installed inside the lower mold base. One end of the power supply wire is inserted into the inside of the testing mold and extends to the air injection receptor.

[0007] Furthermore, a barometric pressure sensor is embedded inside the air injection receptor. An air injection joint connected to the outlet end of the second air pipe is fixedly installed on the back of the lower die base, and a front wire combing plate is fixedly installed on the front of the lower die base. The bottom end of the upper die base is fixedly connected to an upper pressing block. Inside the lower die base and on the front side of the air injection receptor, a pressing block base is fixedly installed. A lower pressing block is slidably connected inside the pressing block base. Guide members are fixedly installed on both sides of the top of the lower die base, and guide holes corresponding to the guide members are opened at the bottom end of the upper die base.

[0008] Furthermore, an air channel is opened inside the lower die base. The inlet end of the air channel is communicated with the outlet end of the air injection joint, and the outlet end of the air channel is set as an air channel outlet hole. A first groove body and a second groove body that are communicated with each other are respectively opened inside the lower die base. The depth of the second groove body is greater than that of the first groove body. A wire guiding groove one is opened at the top end of the front side of the lower die base, and groove bodies three are opened at the top ends of both sides of the lower die base.

[0009] Furthermore, the air injection receptor is fixed inside the first groove body, the pressing block base is fixed inside the second groove body, the guide members are fixed inside the groove bodies three, and a wire guiding groove two corresponding to the wire guiding groove one is opened at the top end of the front wire combing plate.

[0010] Furthermore, a wire testing cavity for introducing power supply wires is opened inside the air injection receptor. An air guide hole communicated with the air channel outlet hole is opened at the bottom end of the air injection receptor. A sensor installation hole for installing the barometric pressure sensor is opened at the side of the air injection receptor. The wire testing cavity, the air guide hole, and the sensor installation hole are all communicated with each other.

[0011] Furthermore, a wire upper pressing groove is opened at the bottom end of the upper pressing block. A first guiding inclined surface is arranged on the back of the upper pressing block. A sliding groove is opened inside the pressing block base. The lower pressing block slides inside the sliding groove. A wire lower supporting groove corresponding to the wire upper pressing groove is opened at the top end of the lower pressing block, and a second guiding inclined surface adapted to the first guiding inclined surface is arranged at the front end of the lower pressing block.

[0012] The present invention provides a power supply wire airtightness testing device. Compared with the prior art, the following beneficial effects are achieved: For this power supply wire airtightness testing device, an absolutely airtight testing environment is created for the power supply wire during testing by means of mold clamping. Then, air with a rated air pressure is introduced into this testing environment. Whether the air pressure in this airtight testing environment is constant within a rated time is detected in real time through a sensor. If it is constant, it indicates that the power supply wire is a qualified product; otherwise, it is an unqualified product. The testing process is simple and practical, and is convenient for popularization and use. Description of the Drawings

[0013] Figure 1It is a schematic structural diagram of the first perspective of the present invention; Figure 2 It is a schematic structural diagram of the second perspective of the present invention; Figure 3 It is a front view of the present invention; Figure 4 It is a disassembled schematic diagram of the test mold in the present invention; Figure 5 It is a schematic structural diagram of the first perspective after the test mold in the present invention is assembled; Figure 6 It is a schematic structural diagram of the second perspective after the test mold in the present invention is assembled; Figure 7 It is a schematic structural diagram of the lower mold base in the present invention; Figure 8 It is a schematic structural diagram of the gas injection receptor in the present invention; Figure 9 It is a top view of the present invention; Figure 10 For the present invention Figure 9 The sectional view of A-A in; Figure 11 For the present invention Figure 9 The sectional view of B-B in.

[0014] In the figure: 1. Equipment bearing bracket; 2. Test platform; 3. Protective cover; 31. Through hole; 4. Safety grating; 5. Cylinder bracket; 6. Pressing and sealing driving cylinder; 7. Test mold; 71. Lower mold base; 711. Air duct; 712. Groove one; 713. Groove two; 714. Air duct outlet hole; 715. Groove three; 716. Wire guiding groove one; 72. Upper mold base; 73. Gas injection receptor; 731. Wire test cavity; 732. Air guiding hole; 733. Sensor mounting hole; 74. Pressure sensor; 75. Gas injection joint; 76. Front combing plate; 761. Wire guiding groove two; 77. Upper pressing block; 771. Wire upper pressing groove; 772. Guiding inclined surface one; 78. Pressing block base; 781. Sliding groove; 79. Lower pressing block; 791. Wire lower supporting groove; 792. Guiding inclined surface two; 710. Guiding part; 8. Digital display control panel; 9. Air pump; 10. Solenoid valve; 11. Air pipe one; 12. Air pipe two; 13. Power supply wire to be measured. Specific embodiments

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Please refer to Figures 1-3 , the present invention provides a technical solution: a closed performance testing device for power supply wires, including a device bearing bracket 1 and a testing platform 2 fixedly installed on the upper part of the device bearing bracket 1. A protective cover 3 is fixedly installed on the upper part of the testing platform 2. The front of the protective cover 3 has an opening, and safety light grids 4 for protection during testing are fixedly installed on both sides of the opening. A cylinder bracket 5 is fixedly installed inside the protective cover 3. Pressing and sealing driving cylinders 6 are symmetrically installed on the front of the cylinder bracket 5. A testing mold 7 is jointly installed on the telescopic end of the pressing and sealing driving cylinder 6 and the upper part of the testing platform 2. At least two groups of testing molds 7 are provided, and each group is used to test power supply wires of different specifications. A digital display control panel 8 for controlling the entire device and an air pump 9 for injecting gas into the testing mold 7 are respectively fixedly installed inside the device bearing bracket 1. A solenoid valve 10 is fixedly installed on the back of the protective cover 3. An air pipe 11 is jointly connected between the air outlet of the air pump 9 and the air inlet of the solenoid valve 10. The solenoid valve 10 has several air outlets, and an air pipe 12 is connected between each air outlet and the air inlet of the corresponding testing mold 7. A through hole 31 is opened on the back of the protective cover 3, and the air pipe 12 extends from the through hole 31 into the inside of the protective cover 3.

[0017] Please refer to Figures 4-11 , the testing mold 7 includes a lower mold base 71 fixedly installed on the upper part of the testing platform 2 and an upper mold base 72 fixedly installed on the telescopic end of the pressing and sealing driving cylinder 6. An air injection receptor 73 is fixedly installed inside the lower mold base 71. One end of the power supply wire is inserted into the inside of the testing mold 7 and extends into the air injection receptor 73. A pressure sensor 74 (the pressure sensor 74 communicates with the digital display control panel 8 and can display the air pressure value on the digital display control panel 8 in real time) is embeddedly installed inside the air injection receptor 73. An air injection joint 75 connected to the air outlet end of the air pipe 12 is fixedly installed on the back of the lower mold base 71, and a front wire combing plate 76 is fixedly installed on the front of the lower mold base 71. The bottom end of the upper mold base 72 is fixedly connected with an upper pressing block 77. A pressing block base 78 is fixedly installed inside the lower mold base 71 and on the front side of the air injection receptor 73. A lower pressing block 79 is slidably connected inside the pressing block base 78. Guide members 710 are fixedly installed on both sides of the top of the lower mold base 71, and guide holes corresponding to the guide members 710 are opened at the bottom end of the upper mold base 72; First, insert the power supply wire 13 to be tested into the air injection receptor 73. The pressing and sealing driving cylinder 6 pushes the upper mold base 72 downward to close the upper mold base 72 and the lower mold base 71. Through the air pipe 12, gas is injected into the air injection receptor 73. The injected gas enters the inside of the power supply wire 13 to be tested. After reaching the rated air pressure, stop injecting gas. The pressure sensor 74 monitors whether the air pressure is constant. If it is constant, it indicates that the power supply wire is a qualified product; otherwise, it is an unqualified product.

[0018] An air passage 711 is provided inside the lower die base 71. The intake end of the air passage 711 is connected to the outlet end of the gas injection joint 75, and the outlet end of the air passage 711 is provided as an air passage outlet hole 714. Inside the lower die base 71, a first groove 712 and a second groove 713 that are connected to each other are respectively provided. The depth of the second groove 713 is greater than that of the first groove 712. At the top of the front side of the lower die base 71, a first wire guiding groove 716 is provided, and at the top of both sides of the lower die base 71, third grooves 715 are provided. The gas injection receptor 73 is fixed inside the first groove 712, the pressing block base 78 is fixed inside the second groove 713, the guiding member 710 is fixed inside the third groove 715. At the top of the front-posed wire combing plate 76, a second wire guiding groove 761 corresponding to the first wire guiding groove 716 is provided. Inside the gas injection receptor 73, a wire testing cavity 731 for guiding the power supply wire is provided, and at the bottom end of the gas injection receptor 73, an air guiding hole 732 connected to the air passage outlet hole 714 is provided. On the side of the gas injection receptor 73, a sensor mounting hole 733 for mounting the air pressure sensor 74 is provided. The wire testing cavity 731, the air guiding hole 732, and the sensor mounting hole 733 are all connected. At the bottom end of the upper pressing block 77, a wire upper pressing groove 771 is provided, and on the back surface of the upper pressing block 77, a first guiding inclined surface 772 is provided. Inside the pressing block base 78, a sliding groove 781 is provided, and the lower pressing block 79 slides inside the sliding groove 781. At the top end of the lower pressing block 79, a wire lower supporting groove 791 corresponding to the wire upper pressing groove 771 is provided, and at the front end of the lower pressing block 79, a second guiding inclined surface 792 adapted to the first guiding inclined surface 772 is provided. After the power supply wire to be tested 13 is inserted into the wire testing cavity 731, the power supply wire to be tested 13 is also located in the wire lower supporting groove 791. When the upper die base 72 and the lower die base 71 are closed, during the downward movement of the upper pressing block 77, the first guiding inclined surface 772 continuously presses the second guiding inclined surface 792, prompting the lower pressing block 79 to move in the sliding groove 781 towards the direction of the gas injection receptor 73, thereby pressing against the power supply wire to be tested 13 to block the entrance of the wire testing cavity 731, and at the same time, it can also prevent the power supply wire to be tested 13 from falling off the wire testing cavity 731 due to the impact force during the gas injection process.

[0019] When performing a tightness test on the power supply wire 13 to be tested, first control the pressing and sealing drive cylinder 6 to shorten, driving the entire upper die base 72 and the upper pressing block 77 to move upward by a certain distance. Subsequently, the staff inserts the power supply wire 13 to be tested into the air injection receptor 73 of the lower die base 71. After insertion, other parts of the power supply wire 13 to be tested are located in the wire guiding groove two 761 and the wire lower support groove 791, and the rear end of the lower pressing block 79 abuts against the protruding part of the power supply wire 13 to be tested. Then control the pressing and sealing drive cylinder 6 to extend, causing the upper die base 72 and the lower die base 71 to close the mold. During the mold closing process, the upper pressing block 77 will also move downward synchronously, and the guiding inclined surface one 772 is used to squeeze the guiding inclined surface two 792. After the lower pressing block 79 receives the extrusion force, it will move in the sliding groove 781 towards the direction of the air injection receptor 73. As mentioned before, the rear end of the lower pressing block 79 abuts against the protruding part of the power supply wire 13 to be tested. Therefore, after the lower pressing block 79 moves, it will firmly abut the power supply wire 13 to be tested in the wire test cavity 731, and the protruding part of the wire test cavity 731 will block the entrance of the wire test cavity 731 to ensure that the wire test cavity 731 is airtight; Subsequently, start the air pump 9. The air pump 9 injects external air into the solenoid valve 10 through the air pipe one 11. By adjusting the air path of the solenoid valve 10, this air is injected into the corresponding air pipe two 12, and then injected into the corresponding test mold 7 by this air pipe two 12. When the gas is injected into the test mold 7, it first enters the air duct 711 through the air injection joint 75, and then finally enters the wire test cavity 731 through the air duct outlet hole 714 and the air guiding hole 732. After injecting air with a rated air pressure, stop the air injection. At this time, the air pressure sensor 74 will monitor for a period of time. If the air pressure in the wire test cavity 731 decreases during this period, it means that there is a problem of air leakage in the power supply cable 13 to be tested, that is, the tightness does not meet the standard, and it belongs to defective products. Otherwise, it is a good product.

[0020] In summary, the tightness performance test equipment for the power supply wire creates an absolutely airtight test environment for the power supply wire during the test by closing the mold, then injects air with a rated air pressure into this test environment, and uses a sensor to monitor in real time whether the air pressure in this airtight test environment is constant within the rated time. If it is constant, it means that the power supply wire is a qualified product, otherwise it is an unqualified product. The test process is simple and practical, and is convenient for popularization and use.

Claims

1. A power cord airtight performance testing device, comprising a device bearing bracket (1) and a testing platform (2) fixedly installed on the upper part of the device bearing bracket (1), characterized in that, A protective cover (3) is fixedly installed on the upper part of the test platform (2). A cylinder support (5) is fixedly installed inside the protective cover (3). Pressing and sealing driving cylinders (6) are symmetrically installed on the front surface of the cylinder support (5). A test mold (7) is jointly installed on the telescopic end of the pressing and sealing driving cylinder (6) and the upper part of the test platform (2). At least two groups of test molds (7) are provided, and each group is used to test power cables of different specifications. A digital display control panel (8) for controlling the entire device and an air pump (9) for injecting gas into the test mold (7) are respectively fixedly installed inside the equipment bearing support (1). A solenoid valve (10) is fixedly installed on the back of the protective cover (3). An air pipe one (11) is jointly connected between the air outlet of the air pump (9) and the air inlet of the solenoid valve (10). The solenoid valve (10) has several air outlets, and an air pipe two (12) is connected between each air outlet and the air inlet of the corresponding test mold (7).

2. The airtight performance testing device for a power cord according to claim 1, characterized in that, The front surface of the protective cover (3) has an opening, and safety light grids (4) for protection during the test are fixedly installed on both sides of the opening. A through hole (31) is opened on the back of the protective cover (3), and the air pipe two (12) extends into the protective cover (3) from the through hole (31).

3. The airtight performance testing device for a power cord according to claim 1, characterized in that, The test mold (7) includes a lower mold base (71) fixedly installed on the upper part of the test platform (2) and an upper mold base (72) fixedly installed on the telescopic end of the pressing and sealing driving cylinder (6). An air injection receptor (73) is fixedly installed inside the lower mold base (71). One end of the power cable is inserted into the test mold (7) and extends into the air injection receptor (73).

4. A power cord airtight performance testing device according to claim 3, characterized in that, A pressure sensor (74) is embeddedly installed inside the air injection receptor (73). An air injection joint (75) connected to the air outlet end of the air pipe two (12) is fixedly installed on the back of the lower mold base (71), and a front combing board (76) is fixedly installed on the front surface of the lower mold base (71). The bottom end of the upper mold base (72) is fixedly connected with an upper pressing block (77). A pressing block base (78) is fixedly installed inside the lower mold base (71) and in front of the air injection receptor (73). A lower pressing block (79) is slidably connected inside the pressing block base (78). Guide members (710) are fixedly installed on both sides of the top of the lower mold base (71), and guide holes corresponding to the guide members (710) are opened at the bottom end of the upper mold base (72).

5. The airtight performance testing device for a power cord according to claim 4, characterized in that An air channel (711) is opened inside the lower mold base (71). The air inlet end of the air channel (711) is communicated with the air outlet end of the air injection joint (75), and the air outlet end of the air channel (711) is provided with an air channel air outlet hole (714). A groove one (712) and a groove two (713) that are communicated with each other are respectively opened inside the lower mold base (71). The depth of the groove two (713) is greater than that of the groove one (712). A wire guiding groove one (716) is opened at the top end of the front side of the lower mold base (71), and groove three (715) is opened at the top end of both sides of the lower mold base (71).

6. The airtight performance testing device for a power cord according to claim 5, wherein, The gas injection receptor (73) is fixed inside the first tank body (712), the pressing block base (78) is fixed inside the second tank body (713), the guiding member (710) is fixed inside the third tank body (715), and a wire guiding groove two (761) corresponding to the wire guiding groove one (716) is formed at the top end of the front wire combing plate (76).

7. The airtight performance testing device for a power cord according to claim 5, characterized in that, A wire testing cavity (731) for introducing power supply wires is formed inside the gas injection receptor (73), and a gas guiding hole (732) communicating with the airway air outlet hole (714) is formed at the bottom end of the gas injection receptor (73). A sensor mounting hole (733) for mounting a pressure sensor (74) is formed at the side part of the gas injection receptor (73). The wire testing cavity (731), the gas guiding hole (732) and the sensor mounting hole (733) are all communicated with each other.

8. The airtight performance testing device for a power cord according to claim 4, characterized in that A wire upper pressing groove (771) is formed at the bottom end of the upper pressing block (77), a guiding inclined surface one (772) is arranged on the back surface of the upper pressing block (77), a sliding groove (781) is formed inside the pressing block base (78), the lower pressing block (79) slides inside the sliding groove (781), a wire lower supporting groove (791) corresponding to the wire upper pressing groove (771) is formed at the top end of the lower pressing block (79), and a guiding inclined surface two (792) adapted to the guiding inclined surface one (772) is arranged at the front end of the lower pressing block (79).

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