A capacitor safety film withstand voltage test device

Abstract

The present invention discloses a capacitor safety film withstand voltage test device, which relates to the field of testing technology, including a withstand voltage test instrument and a test bench, wherein a test frame is slidably provided on the test bench, a test column is provided at the bottom of the test frame, and a test base block is provided at the top of the test bench, and further includes: a delivery mechanism including a base, a slider and two flat plates, the slider is slidably matched with a slide groove at the top of the base, the test bench is arranged at the top of the first end of the base, the two flat plates are symmetrically arranged on both sides of the base and are located between the slider and the test bench, the flat plates are connected to the slider through a bracket, the bottom surface of the bracket is not lower than the top surface of the test bench, the top surface of the flat plates is not lower than the top surface of the test base block, and the tops of the two flat plates are used to lay the safety film; the first power mechanism is used to move the slider to move the safety film on the flat plate to the test base block; the second power mechanism is used to move the test bench downward to press the test column against the safety film. This scheme can automatically deliver the safety film to the test bench and automatically control the lifting and lowering of the test bench.

Description

Technical Field

[0001] The invention relates to the field of testing technology, and in particular to a capacitor safety film withstand voltage testing device. Background Art

[0002] Capacitor safety film is a protective film used to cover the inside of capacitors. The main materials include polyimide film, polypropylene film, etc. Capacitor safety film has the characteristics of high insulation, low conductivity, high temperature resistance, etc. It also has good mechanical properties and chemical stability, which can effectively protect the internal structure of the capacitor and extend the service life of the capacitor.

[0003] The performance indicators of capacitor safety film directly affect the application effect of capacitor safety film, mainly including insulation resistance, capacitance, voltage resistance, temperature resistance and other performance indicators. Insulation resistance is an important indicator to measure the insulation performance of the film. The larger its value, the better the insulation performance of the film; capacitance is an indicator to measure the capacitance performance of the film. The larger its value, the better the capacitance performance of the film; voltage resistance refers to the tolerance of the film under the working voltage. The larger its value, the better the voltage resistance of the film; temperature resistance refers to the stability of the film in a high temperature environment. The higher its value, the better the temperature resistance of the film.

[0004] Regarding the withstand voltage test of the capacitor safety film, the method and steps are as follows: cut a section of the safety film; manually lift the test frame on the test bench of the withstand voltage test instrument, place the safety film on the test bench, and the safety film covers the test base block on the test bench, release the test frame by hand, and the test column on the test frame presses the safety film on the test base block, and clamps the safety film with a conductive clip; start the withstand voltage test instrument and start testing the withstand voltage capacity of the safety film. The problem is that it relies on manual lifting of the test frame and manual use of conductive clips, which is inconvenient to operate. Summary of the invention

[0005] In order to solve the deficiencies of the prior art, the present invention provides a capacitor safety film withstand voltage test device, which can automatically deliver the safety film to a test bench and automatically control the lifting and lowering of the test stand.

[0006] In order to achieve the purpose of the present invention, the following scheme is proposed:

[0007] A capacitor safety film withstand voltage test device comprises a withstand voltage test instrument and a test bench, wherein the withstand voltage test instrument is connected to a conductive clip via an electric wire, a test frame is slidably provided on the test bench, a test column is provided at the bottom of the test frame, a test base block corresponding to the test column is provided at the top of the test bench, and the test bench also comprises a delivery mechanism, a first power mechanism, and a second power mechanism arranged at the top of the base.

[0008] The delivery mechanism includes a base, a slider and two flat plates. The slider is slidably matched with the slide groove on the top of the base. The test bench is arranged on the top of the first end of the base. The two flat plates are symmetrically arranged on both sides of the base and are located between the slider and the test bench. The flat plates are connected to the slider through a bracket. The bottom surface of the bracket is not lower than the top surface of the test bench. The top surface of the flat plates is not lower than the top surface of the test base block. The top of the two flat plates is used for laying safety films.

[0009] The first power mechanism is used to move the slider to move the safety film on the flat plate to the test base block;

[0010] The second power mechanism is used to move the test frame downward to press the test column against the safety film.

[0011] Furthermore, the first power mechanism includes a motor, a rotating shaft, a regulating column, a rack and a swing frame. The rotating shaft is rotatably arranged between the first support frame and the second support frame. The motor is used to drive the rotating shaft. The regulating column is coaxially arranged on the rotating shaft. The outer wall of the regulating column is provided with an arc plate. The arc plate is trapezoidal when unfolded. The height direction of the trapezoid is parallel to the axis of the rotating shaft. The middle section of the swing frame is rotatably connected to the third support plate. One end of the swing frame is provided with an arc gear, and the rack is arranged on the slider. The arc gear is meshed with the rack. A roller is provided at the bottom of the other end of the swing frame, and the roller abuts the inclined section of the arc plate.

[0012] Furthermore, two columns are provided on the top of the test bench, the test frame is slidably matched with the two columns, the tops of the columns are connected to the fourth support plate, and the test base block is located between the slider and the columns.

[0013] Furthermore, the second power mechanism includes two bevel gears, a screw and a cross bar. The top of the screw is rotatably connected to the second support plate, and the bottom is fixedly connected to one of the bevel gears. The other bevel gear is coaxially connected to the rotating shaft. The two bevel gears are meshed. One end of the cross bar is fixedly connected to the test frame, and the other end is threadedly connected to the screw. When the regulating column rotates and the roller moves to the flat section of the arc plate, the safety membrane moves to the test base block. At this time, there is still a height difference between the bottom surface of the test column and the safety membrane.

[0014] Furthermore, the conductive clip is fixed on the top of the test bench and is in an open state. When the safety film moves to the test base block, the safety film is located within the clamping range of the conductive clip. A vertical rod is provided at the bottom of the horizontal rod, and a rubber block is provided at the bottom of the vertical rod. The rubber block is located above the conductive clip. When the horizontal rod moves downward to allow the test column to press the safety film downward, the rubber block acts on the conductive clip so that the conductive clip just clamps the safety film.

[0015] Furthermore, the delivery mechanism also includes a pallet, one end of which is connected to the second end of the base through a vertical plate, the pallet is located above the bracket, and the top surface of the pallet is flush with the top surface of the flat plate, and the two flat plates and the top of the pallet are used to lay the safety film.

[0016] Furthermore, a plurality of vacuum adsorption holes are provided on the top of the flat plate.

[0017] Furthermore, the bracket is L-shaped, and there is a preset interval between the two brackets for avoiding the test block.

[0018] Furthermore, a spring is provided in the slide groove, and the spring is connected to the slide block.

[0019] The beneficial effects of the present invention are that the safety film can be automatically delivered to the test base block, the test column automatically moves down to press the safety film, and the conductive clip automatically clamps the safety film, thereby reducing the degree of dependence on manual labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Shows the structure of the withstand voltage test device Figure 1 ;

[0021] Figure 2 The plan view of the bracket and the slider under the support plate is shown;

[0022] Figure 3 Shows the structure of the withstand voltage test device Figure 2 ;

[0023] Figure 4 A front view of a withstand voltage test device is shown;

[0024] Figure numerals: test bench-11, test base block-111, column-112, conductive clip-12, test frame-13, test column-131, delivery mechanism-2, base-21, slider-22, plate-23, bracket-231, support plate-24, vertical plate-241, spring-25, first power mechanism-3, motor-31, rotating shaft-32, regulating column-33, arc plate-331, rack-34, arc gear-35, swing frame-36, roller-361, second power mechanism-4, bevel gear-41, screw rod-42, cross bar-43, vertical bar-431, rubber block-432, base-5. DETAILED DESCRIPTION

[0025] like Figure 1 As shown, this embodiment provides a capacitor safety film withstand voltage test device, including a withstand voltage test instrument, a test bench 11, and a delivery mechanism 2, a first power mechanism 3, and a second power mechanism 4 arranged on the top of a base 5.

[0026] The withstand voltage test instrument is connected to a conductive clip 12 through an electric wire. Since the withstand voltage test instrument is an existing instrument, the structure of the withstand voltage test instrument and the electric wires are not shown in the attached figure. A test frame 13 is slidably provided on the test bench 11. The specific sliding method is as follows: two columns 112 are provided on the top of the test bench 11, and the top of the column 112 is connected to the fourth support plate, and the fourth support plate is provided on the test bench 11. The test frame 13 slides up and down to cooperate with the two columns 112. A test column 131 is provided at the bottom of the test frame 13, and a test base block 111 is provided on the top of the test bench 11. The test base block 111 is located directly below the test column 131.

[0027] like Figure 1 , Figure 2 As shown, the delivery mechanism 2 includes a base 21, a slider 22 and two flat plates 23. A T-shaped slide groove is provided on the top of the base 21. The slider 22 is set in an I-shaped shape. The slider 22 slides in the slide groove on the top of the base 21. In order to improve stability, a spring 25 is provided in the slide groove, and the spring 25 is connected to the end of the slider 22. The test bench 11 is fixedly arranged on the top of the first end of the base 21, and the two flat plates 23 are symmetrically arranged on both sides of the base 21, and the two flat plates 23 are located between the slider 22 and the test bench 11. The flat plates 23 are connected to the slider 22 through a bracket 231, and the tops of the two flat plates 23 are used to lay safety films.

[0028] The test block 111 is located between the slider 22 and the column 112. In order to smoothly move the safety film on the flat plate 23 to the test block 111, the present embodiment can adopt the following methods: first, the flat plate 23 is made of non-conductive material, such as glass, ceramic tile, etc. When the safety film is laid on the flat plate 23, the end of the safety film will be adsorbed on the flat plate 23 due to static electricity; second, the top surface of the flat plate 23 is not lower than the top surface of the test block 111, and the bottom surface of the safety film is not lower than the top surface of the test block 111. When the bracket 231 and the flat plate 23 move toward the test bench 11 with the slider 22, the safety film can be moved to the test block 111.

[0029] One thing to note here is that there is a certain distance between the test bench 11 and the slider 22, and the two flat plates 23 are located between the slider 22 and the test bench 11. Such a structural design has a special purpose: to ensure that when the two flat plates 23 move the safety film to the test base block 111, the slider 22 cannot interfere with the test bench 11.

[0030] When the bracket 231 moves toward the test bench 11 along with the slider 22, the bottom surface of the bracket 231 is not lower than the top surface of the test bench 11 to prevent the bracket 231 from interfering with the test bench 11. When the bracket 231 moves toward the test bench 11 along with the slider 22, the bracket 231 is configured to be L-shaped, and a preset interval is provided between the two brackets 231, and the interval is used to avoid the test bench 111.

[0031] In order to facilitate the laying of the safety film on the flat plate 23, as shown in FIG. Figure 1 , Figure 2 As shown, the delivery mechanism 2 of this embodiment also includes a pallet 24, one end of which is connected to the second end of the base 21 through a vertical plate 241, the pallet 24 is located above the bracket 231 and the slider 22, and both sides of the pallet 24 are close to the corresponding flat plate 23, the top surface of the pallet 24 is flush with the top surface of the flat plate 23 or the top surface of the pallet 24 is slightly lower than the top surface of the flat plate 23, for example, 1~4cm lower, the two flat plates 23 and the top of the pallet 24 are used to lay a safety film, the pallet 24 is made of a conductive material, such as metal, when the safety film is laid on the pallet 24, no electrostatic adsorption is generated between the safety film and the pallet 24, the pallet 24 in this embodiment has two functions, one is that during the process of laying the safety film, the pallet 24 plays a supporting role, and the second is that when the flat plate 23 moves toward the test bench 11, the safety film can be separated from the pallet 24, and the pallet 24 will not interfere with the movement trajectory of the flat plate 23.

[0032] In order to improve the stability of the flat plate 23 during the movement of the safety film, a plurality of vacuum adsorption holes may be provided on the top of the flat plate 23. Note that when the flat plate 23 vacuum adsorbs the safety film, it is only used during the movement of the flat plate 23. When testing the pressure resistance of the safety film, vacuum adsorption is not required.

[0033] The first power mechanism 3 is used to move the slider 22 to move the safety film on the flat plate 23 to the test base block 111. The specific implementation of the first power mechanism 3 in this embodiment is as follows:

[0034] like Figure 1 , Figure 3 As shown, the first power mechanism 3 includes a motor 31, a rotating shaft 32, a regulating column 33, a rack 34, an arc gear 35 and a swing frame 36. The rotating shaft 32 is rotatably arranged between the first support frame and the second support frame. The motor 31 is used to drive the rotating shaft 32. The regulating column 33 is coaxially arranged on the rotating shaft 32. The outer wall of the regulating column 33 is provided with an arc plate 331. The arc plate 331 is trapezoidal when unfolded, and the height direction of the trapezoid is parallel to the axis of the rotating shaft 32. The swing frame 36 is arranged between the regulating column 33 and the base 21. The middle section of the swing frame 36 is rotatably connected to the third support plate. The arc gear 35 is fixedly arranged at one end of the swing frame 36. The rack 34 is arranged on the slider 22. The arc gear 35 is meshed with the rack 34. A roller 361 is provided at the bottom of the other end of the swing frame 36, and the roller 361 abuts against the inclined section of the arc plate 331.

[0035] The principle of the first power mechanism 3 is as follows: the motor 31 drives the rotating shaft 32 in the positive direction, and the regulating column 33 and the arc plate 331 rotate with the rotating shaft 32. The inclined section of the arc plate 331 will cause the roller 361 to move along the inclined section toward the flat section of the arc plate 331, thereby causing the swing frame 36 to rotate clockwise (in Figure 2 From the perspective of FIG. 1 , the arc gear 35 meshes with the rack 34, thereby causing the slider 22 to move toward the test bench 11; when the roller 361 just moves to the flat section of the arc plate 331, the safety film just moves to the test base block 111.

[0036] The second power mechanism 4 is used to move the test frame 13 downward so that the test column 131 presses against the safety film. The specific implementation of the second power mechanism 4 in this embodiment is as follows:

[0037] like Figure 1 , Figure 3 As shown, the second power mechanism 4 includes two bevel gears 41, a screw 42 and a cross bar 43. The top of the screw 42 is rotatably connected to the second support plate, the bottom of the screw 42 is fixedly connected to one of the bevel gears 41, and the other bevel gear 41 is coaxially connected to the rotating shaft 32. The two bevel gears 41 are meshed with each other, one end of the cross bar 43 is fixedly connected to the test frame 13, and the other end of the cross bar 43 is threadedly connected to the screw 42.

[0038] When the motor 31 drives the rotating shaft 32 in the forward direction, the two bevel gears 41 and the screw rod 42 rotate accordingly. Because the test frame 13 slides up and down to fit the two columns 112, when the screw rod 42 rotates, the cross bar 43, the test frame 13 and the test column 131 will be prompted to move downward as a whole; when the regulating column 33 rotates and causes the roller 361 to just move to the flat section of the arc plate 331, the safety film just moves to the test base block 111. At this time, there is still a height difference between the bottom surface of the test column 131 and the safety film; then the motor 31 continues to drive the rotating shaft 32 in the forward direction, the regulating column 33 continues to rotate, and the roller 361 moves along the flat section of the arc plate 331. During this process, the swing frame 36 will not rotate, the slider 22 remains stationary, and the two bevel gears 41 will continue to rotate, thereby prompting the test column 131 to continue to move downward until the test column 131 presses the safety film against the test base block 111.

[0039] Preferably, Figure 3 , Figure 4 As shown, the conductive clip 12 is fixed on the top of the test bench 11, and the conductive clip 12 is in an open state. When the safety film moves to the test base block 111, the safety film is just moved into the clamping range of the conductive clip 12. A vertical rod 431 is provided at the bottom of the horizontal rod 43, and a rubber block 432 is provided at the bottom of the vertical rod 431. The rubber block 432 is located above the conductive clip 12. When the horizontal rod 43 moves downward to make the test column 131 press the safety film downward, the rubber block 432 acts on the conductive clip 12, so that the conductive clip 12 just clamps the safety film.

[0040] The method of using the withstand voltage test device is as follows:

[0041] Laying the safety film on two flat plates 23;

[0042] The motor 31 drives the rotating shaft 32 in the forward direction. On the one hand, the regulating column 33 and the arc plate 331 rotate with the rotating shaft 32, thereby causing the slider 22 and the plate 23 to move toward the test bench 11. On the other hand, the two bevel gears 41 and the screw 42 rotate accordingly, causing the crossbar 43, the test frame 13 and the test column 131 to move downward as a whole. When the roller 361 just moves to the flat section of the arc plate 331, the safety film just moves to the test base block 111 and is located within the clamping range of the conductive clip 12.

[0043] The motor 31 continues to drive the rotating shaft 32 in the forward direction, causing the test column 131 to continue to move downward, until the test column 131 presses the safety film against the test base block 111, and the conductive clip 12 clamps the safety film;

[0044] Start the pressure test instrument to test the pressure resistance of the safety film;

[0045] After the test is completed, the motor 31 drives the rotating shaft 32 in the reverse direction.

[0046] In summary, the device can automatically deliver the safety film to the test base block 111, the test column 131 automatically moves down to press the safety film, and the conductive clip 12 automatically clamps the safety film, reducing the degree of dependence on manual labor; it should be noted that the structure of the device is ingenious, and only one power source, the motor 31, is needed to complete the above process.

[0047] The above embodiments are only used to illustrate the technical ideas and features of the present invention, and are not intended to be the only or limit the present invention. It should be understood by those skilled in the art that various changes or equivalent substitutions made to the present invention without departing from the scope of the present invention all fall within the scope of protection of the present invention.

Claims

1. A capacitor safety film withstand voltage test device, comprising a withstand voltage test instrument and a test bench (11), wherein the withstand voltage test instrument is connected to a conductive clip (12) via an electric wire, a test frame (13) is slidably provided on the test bench (11), a test column (131) is provided at the bottom of the test frame (13), and a test base block (111) corresponding to the test column (131) is provided at the top of the test bench (11), characterized in that: It also includes a delivery mechanism (2), a first power mechanism (3), and a second power mechanism (4) which are arranged on the top of the base (5); The delivery mechanism (2) comprises a base (21), a slider (22) and two flat plates (23), the slider (22) being slidably matched in a slide groove at the top of the base (21), the test bench (11) being arranged at the top of the first end of the base (21), the two flat plates (23) being symmetrically arranged at both sides of the base (21) and being located between the slider (22) and the test bench (11), the flat plates (23) being connected to the slider (22) via a bracket (231), the bottom surface of the bracket (231) being not lower than the top surface of the test bench (11), the top surface of the flat plates (23) being not lower than the top surface of the test base block (111), and the tops of the two flat plates (23) being used for laying safety films; The first power mechanism (3) is used to move the slider (22) to move the safety film on the flat plate (23) onto the test base block (111); The second power mechanism (4) is used to move the test frame (13) downwards so as to press the test column (131) against the safety film; The first power mechanism (3) comprises a motor (31), a rotating shaft (32), a control column (33), a rack (34) and a swing frame (36); the rotating shaft (32) is rotatably arranged between the first support frame and the second support frame; the motor (31) is used to drive the rotating shaft (32); the control column (33) is coaxially arranged on the rotating shaft (32); an arc plate (331) is arranged on the outer wall of the control column (33); the arc plate (331) is trapezoidal when unfolded; the height direction of the trapezoid is parallel to the axis of the rotating shaft (32); the middle section of the swing frame (36) is rotatably connected to the third support plate; one end of the swing frame (36) is provided with an arc gear (35); the rack (34) is arranged on the slider (22); the arc gear (35) is meshed with the rack (34); a roller (361) is arranged at the bottom of the other end of the swing frame (36); the roller (361) abuts against the inclined surface section of the arc plate (331); The second power mechanism (4) comprises two bevel gears (41), a screw (42) and a cross bar (43); the top of the screw (42) is rotatably connected to the second support plate, and the bottom is fixedly connected to one of the bevel gears (41); the other bevel gear (41) is coaxially connected to the rotating shaft (32); the two bevel gears (41) are meshed with each other; one end of the cross bar (43) is fixedly connected to the test frame (13), and the other end is threadedly connected to the screw (42); when the regulating column (33) rotates and causes the roller (361) to move to the flat section of the arc plate (331), the safety film moves to the test base block (111); at this time, there is still a height difference between the bottom surface of the test column (131) and the safety film; The conductive clip (12) is fixedly arranged on the top of the test bench (11) and is in an open state. When the safety film moves onto the test base block (111), the safety film is located within the clamping range of the conductive clip (12). A vertical rod (431) is provided at the bottom of the horizontal rod (43). A rubber block (432) is provided at the bottom of the vertical rod (431). The rubber block (432) is located above the conductive clip (12). When the horizontal rod (43) moves downward to allow the test column (131) to press the safety film downward, the rubber block (432) acts on the conductive clip (12) so that the conductive clip (12) just clamps the safety film.

2. The capacitor safety film withstand voltage test device according to claim 1, characterized in that: Two columns (112) are provided on the top of the test bench (11), the test frame (13) is slidably matched with the two columns (112), the tops of the columns (112) are connected to a fourth support plate, and the test base block (111) is located between the slider (22) and the columns (112).

3. The capacitor safety film withstand voltage test device according to claim 1, characterized in that: The delivery mechanism (2) further comprises a support plate (24), one end of which is connected to the second end of the base (21) via a vertical plate (241), the support plate (24) is located above the bracket (231), and the top surface of the support plate (24) is flush with the top surface of the flat plate (23), and the two flat plates (23) and the top of the support plate (24) are used to lay a safety film.

4. The capacitor safety film withstand voltage test device according to claim 1, characterized in that: A plurality of vacuum adsorption holes are provided on the top of the flat plate (23).

5. The capacitor safety film withstand voltage test device according to claim 1, characterized in that: The bracket (231) is L-shaped, and a preset interval is provided between the two brackets (231) for avoiding the test base block (111).

6. The capacitor safety film withstand voltage test device according to claim 1, characterized in that: A spring (25) is arranged in the slide groove, and the spring (25) is connected to the slide block (22).

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