CN213689823U

CN213689823U - Multi-station capacitor core voltage-resistant strength tester

Info

Publication number: CN213689823U
Application number: CN202022511278.9U
Authority: CN
Inventors: 张声乐
Original assignee: Wenzhou Wiscon Industry Co ltd
Current assignee: Wenzhou Wiscon Industry Co ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-07-13
Anticipated expiration: 2030-11-03

Abstract

The utility model discloses a multistation electric capacity core withstand voltage strength tester, its technical scheme main points are including the base, be provided with a plurality of station on the base, still including fixture, fixture is including drive assembly and locking subassembly, drive assembly is including the mounting, horizon bar and moving part, mounting one end and base fixed connection, the other end links to each other with the horizon bar, horizon bar cavity and be provided with the sliding chamber, be provided with two-way lead screw motor in the sliding chamber, two-way lead screw motor both ends are connected with the moving part respectively including the lead screw, the drive moving part slides, the utility model discloses a mechanical structure's mode has reached and has tested a plurality of electric capacity cores simultaneously, improves detection efficiency, reduces and always examines the consumption of time spent.

Description

Multi-station capacitor core voltage-resistant strength tester

Technical Field

The utility model relates to a test equipment of electric capacity core, more specifically say, it relates to a multistation electric capacity core withstand voltage strength tester.

Background

With the change of electronic information technology, the update speed of digital electronic products is faster and faster, and the production and sales volume of consumer electronic products such as flat panel televisions (LCDs and PDPs), notebook computers, and digital cameras is continuously increasing, which drives the growth of capacitor industry. Capacitors play an important role in circuits such as tuning, bypassing, coupling, filtering, etc., while capacitive cores are the crucial components of capacitors. The quality of the capacitor core directly determines the using effect of the capacitor, so that the capacitor core is necessarily inspected in the production process of the capacitor, and the inspection step usually adopts a tester to test the capacitor core.

At present, the tester for detecting the capacitor cores circulated in the market generally only tests one capacitor core in one test, and detects the capacitor cores in sequence when facing the capacitor cores produced in batch, so that a large amount of power is consumed, the efficiency is low, and the detection time is long.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a multistation electric capacity core withstand voltage strength tester that can carry out the test to a plurality of electric capacity cores simultaneously.

In order to achieve the above purpose, the utility model provides a following technical scheme: a capacitor core withstand voltage strength tester comprises a base and a clamping mechanism, wherein the clamping mechanism is used for clamping two ends of a capacitor core, the clamping mechanism comprises a transmission component and a locking component, the transmission component is used for adjusting the locking state of the locking component, the transmission component is fixedly connected with the base, the locking component is positioned at two ends of the capacitor core, the two locking components are used for clamping the capacitor core, at least two clamping stations are arranged on the locking component, the transmission component comprises a fixing component, a horizontal rod and a moving component, the two locking components are arranged at two axial ends of the horizontal rod, one end of the fixing component is fixedly connected with the base, the other end of the fixing component is connected with the horizontal rod, the horizontal rod is hollow and is provided with a sliding cavity for the moving component to slide, and the moving component is in sliding connection in the sliding cavity through a sliding block, the movable part is connected with the locking assembly through one end extending out of the sliding cavity, a bidirectional lead screw motor is arranged in the sliding cavity, two ends of the bidirectional lead screw motor comprise lead screws with reverse threads, the two lead screws are respectively in threaded connection with the movable part, and the bidirectional lead screw motor drives the movable part to axially slide along the sliding cavity.

The utility model discloses further set up to: the locking assembly comprises a supporting rod and a plurality of clamping assemblies arranged along the length direction of the supporting rod, each clamping assembly consists of a plurality of swing rod units, the supporting rod is fixedly connected with the moving part, a sliding groove is formed in the supporting rod corresponding to each clamping assembly, the plurality of swing rod units are arranged along the length direction of the sliding groove, each swing rod unit comprises two swing rods with one ends hinged, a convex block is arranged at the other end of each swing rod, the convex block can slide along the sliding groove in a reciprocating mode, the swing rods are hinged with the convex blocks, a telescopic reset spring is arranged between the convex blocks close to the side walls at the two ends of the sliding groove and the side walls at the two ends of the sliding groove, two adjacent swing rods of the two swing rod units are hinged to the same convex block, the plurality of swing rod units comprise two first swing rod units and at least one second swing rod unit, and, the first swing rod unit is located electric capacity core both sides, two form a centre gripping clearance that size is adjustable between the grip block, the second swing rod unit is located between each first swing rod unit, the piece of contradicting is used for inconsistent with electric capacity core.

The utility model discloses further set up to: the clamping block comprises a connecting section and a clamping section, the connecting section is fixedly connected with the first swing rod unit, the clamping section is used for clamping the capacitor core, one end, far away from the connecting section, of the clamping section is provided with an inclined plane, and the inclined planes on the clamping block are arranged oppositely.

The utility model discloses further set up to: the contact block is provided with a pressure sensor and a salient point for triggering sensing, the pressure sensor is electrically connected with the bidirectional screw motor, and when the salient point is contacted with the capacitor core, the power of the bidirectional screw motor is gradually reduced until the bidirectional screw motor stops operating.

The utility model discloses further set up to: the protection device comprises a parallel rod, two connecting rods, two limiting plates and a magnet, wherein a containing cavity capable of containing a capacitor core is arranged on the base, the parallel rod is positioned on one side, away from the containing cavity, of the capacitor core, a current sensor for detecting the capacitor core is arranged on the parallel rod, two ends of the parallel rod are respectively connected with the connecting rods, two limiting plates are respectively positioned on two sides of the base and fixedly connected with the base, a middle hole is formed in each limiting plate, the two connecting rods are respectively positioned on two sides of the base, the other end, away from the parallel rod, of each connecting rod penetrates through the middle hole and is provided with a fixing block, the fixing blocks and the connecting rods are both iron cores, a coil for winding the connecting rods is arranged between each fixing block and the limiting plates, the coil is electrically connected with a control circuit, when the current-voltage sensor exceeds a set threshold value, a signal is sent to the control circuit, the control circuit and the coil form a closed power-on circuit, the magnet is fixedly connected with the base, and a space is arranged between the magnet and the coil.

The utility model discloses further set up to: the parallel rod is provided with a limiting part, and the limiting part can limit the capacitor core in the accommodating cavity.

The utility model discloses further set up to: the locating part both ends are stretched into and are accomodate the intracavity, the locating part both ends are provided with the arch, protruding elastic component for the deformability, be provided with on the base and hold the spacing hole that supplies protruding passing through, lateral wall is provided with and holds bellied side opening on the spacing hole, protruding and side hole block mutually.

The utility model discloses further set up to: a cavity is arranged in the base, and a releasing device for ejecting the protrusion from the side hole is arranged in the cavity.

The utility model discloses further set up to: the cavity is linked together with the side opening, it includes button, first connecting piece and second connecting piece to deviate from the device, first connecting piece one end and button fixed connection, the one end of keeping away from the button are provided with compressible compression spring, be provided with the opening with outside intercommunication on the cavity, the opening is located the base lateral wall, the button passes the opening on the cavity and stretches out the base surface, compression spring keeps away from the one end of first connecting piece and links to each other with the cavity inner wall, second connecting piece one end is articulated mutually with first connecting piece, and the other end is articulated to be provided with the sliding block, the sliding block is used for sliding in the side opening radially.

The utility model discloses further set up to: the limiting piece is arc-shaped and matched with the capacitor core in shape.

To sum up, the utility model discloses following beneficial effect has: make the electric capacity core to detect simultaneously through being provided with two at least centre gripping stations, improve detection efficiency, be provided with the fixture that carries out the centre gripping to electric capacity core both ends, fixture comprises drive assembly and locking subassembly, and drive assembly has reached the effect of adjusting the locking subassembly centre gripping through the function with two-way lead screw motor and then drive locking subassembly removal, has improved the utility model discloses a use the variety stability that has increased the centre gripping simultaneously.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic sectional view of the locking assembly of the present invention;

FIG. 3 is a schematic sectional view of the transmission assembly of the present invention;

fig. 4 is a schematic sectional structure view of the protection device of the present invention;

FIG. 5 is a schematic view of the cross-sectional structure of the releasing device of the present invention;

reference numerals: 1. a base; 11. a receiving cavity; 12. a limiting hole; 13. a side hole; 14. a cavity; 141. a button; 142. a first connecting member; 143. a second connecting member; 144. a compression spring; 145. a slider; 2. a transmission assembly; 21. a fixing member; 22. a horizontal bar; 221. a slide chamber; 222. a bidirectional screw motor; 23. a movable member; 3. a locking assembly; 31. a support bar; 311. a chute; 312. a return spring; 32. a swing rod unit; 321. a clamping block; 322. a contact block; 323. salient points; 33. a bump; 4. a parallel bar; 41. a limiting member; 411. a protrusion; 5. a connecting rod; 51. a fixed block; 52. a coil; 6. a limiting plate; 7. and a magnet.

Detailed Description

As shown with reference to figures 1 to 5,

a capacitor core withstand voltage strength tester comprises a base 1 and a clamping mechanism, wherein the clamping mechanism is used for clamping two ends of a capacitor core, the clamping mechanism comprises a transmission component 2 and a locking component 3, the transmission component 2 is connected with the locking component 3, the transmission component 2 is used for adjusting the locking state of the locking component 3, the locking component 3 is positioned at two ends of the capacitor core, the two locking components 3 are used for clamping the capacitor core, the locking component 3 is provided with at least two clamping stations, the transmission component 2 comprises a fixing component 21, a horizontal rod 22 and a moving component 23, the two locking components 3 are arranged at two axial ends of the horizontal rod 22, one end of the fixing component 21 is fixedly connected with the base 1, the other end of the fixing component is connected with the horizontal rod 22, the horizontal rod 22 is hollow and is provided with a sliding cavity 221 for the moving component 23 to slide, the moving component 23 is connected in the sliding cavity, one end that sliding chamber 221 was stretched out to moving part 23 links to each other with locking subassembly 3, be provided with two-way lead screw motor 222 in the sliding chamber 221, two-way lead screw motor 222 both ends are including the reverse lead screw that sets up of screw thread, two lead screws respectively with moving part 23 threaded connection, this two-way lead screw motor 222 drive moving part 23 slides along sliding chamber 221 axial, make the electric capacity core can detect simultaneously through being provided with two at least centre gripping stations, and the detection efficiency is improved, reduce and detect total time consumption, be provided with the fixture that carries out the centre gripping to electric capacity core both ends, fixture comprises drive assembly 2 and locking subassembly 3, drive assembly 2 has reached the effect of adjusting the 3 centre gripping of locking subassembly through the function with two-way lead screw motor 222 and then drive locking subassembly 3 removal, and improved the utility model discloses a stability of centre gripping has been increased simultaneously to.

The locking assembly 3 comprises a supporting rod 31 and a plurality of clamping assemblies arranged along the length direction of the supporting rod, each clamping assembly comprises a plurality of swing rod units 32, the supporting rod 31 is fixedly connected with the moving part 23, a sliding groove 311 is arranged in the supporting rod 31 corresponding to each clamping assembly, the plurality of swing rod units 32 are arranged along the length direction of the sliding groove 311, each swing rod unit 32 comprises two swing rods with one ends hinged, a convex block 33 is arranged at the other end of each swing rod, the convex block 33 can slide along the sliding groove 311 in a reciprocating manner, the swing rods are hinged with the convex blocks 33, a telescopic reset spring 312 is arranged between the convex blocks 33 close to the side walls at the two ends of the sliding groove 311 and the side walls at the two ends of the sliding groove 311, two adjacent swing rods of the two swing rod units 32 are hinged with the same convex block 33, the plurality of swing rod units 32 comprise two first swing rod units and at, the articulated one end of second pendulum rod unit is provided with and supports touch multitouch 322, first pendulum rod unit is located electric capacity core both sides, form a centre gripping clearance with adjustable size between two grip blocks 321, the second pendulum rod unit is located between each first pendulum rod unit, it is used for inconsistent with electric capacity core to support touch multitouch 322, it can make the adjustment pendulum rod position of reciprocating sliding in spout 311 with pendulum rod articulated lug 33 to be provided with spout 311 in bracing piece 31, it contacts with electric capacity core to drive grip block 321 or support touch multitouch 322 that are connected with pendulum rod unit 32 simultaneously, be convenient for match different specification and dimension's electric capacity core, diversity is improved.

The clamping block 321 comprises a connecting section and a clamping section, the connecting mode between the connecting section and the first swing rod unit comprises but is not limited to fixed connection, hinging and threaded connection, preferably, the connecting section is hinged to the first swing rod unit, a torsion spring for driving the connecting section to reset is arranged on the connecting section, the clamping section is used for clamping the capacitor core, one end, far away from the connecting section, of the clamping section is provided with an inclined plane, the inclined planes on the two clamping blocks 321 are oppositely arranged, the connecting section is hinged to the torsion spring and the torsion spring is reset to enable the capacitor core to be adjusted when facing the capacitor cores of different shapes and specifications, the inclined plane is designed to facilitate the capacitor core to enter a clamping gap, the stress direction between the clamping block 321 and the capacitor core can be adjusted, and the stability of clamping is improved when different capacitor cores can be.

The contact block 322 is provided with a pressure sensor and a salient point 323 for triggering sensing, the pressure sensor is electrically connected with the bidirectional screw motor 222, when the salient point 323 is contacted with the capacitor core, the power of the bidirectional screw motor 222 is gradually reduced until the capacitor core stops operating, and the pressure sensor automatically senses the clamping condition of the capacitor core, so that the operation process is more intelligent and the operation effect is more precise.

The protection device comprises a parallel rod 4, two connecting rods 5, two limiting plates 6 and a magnet 7, a containing cavity 11 capable of containing a capacitor core is arranged on a base 1, the parallel rod 4 is positioned on one side of the capacitor core far away from the containing cavity 11, a current sensor for detecting the capacitor core is arranged on the parallel rod 4, two ends of the parallel rod 4 are respectively connected with the connecting rods 5, the two limiting plates 6 are respectively positioned on two sides of the base 1 and fixedly connected with the base 1, the limiting plates 6 are provided with two connecting rods 5 respectively positioned on two sides of the base 1, the other end of the connecting rod 5 far away from the parallel rod 4 penetrates through and is provided with a fixing block 51, the fixing block 51 and the connecting rod 5 are both iron cores, a coil 52 for winding the connecting rod 5 is arranged between the fixing block 51 and the limiting plates 6, the coil 52 is electrically connected with, when the current-voltage sensor exceeds a set threshold value, a signal is sent to the control circuit, the control circuit and the coil 52 form a closed power-on circuit, the magnet 7 is fixedly connected with the base 1, a distance is arranged between the magnet 7 and the coil 52, a protection device is arranged to position the capacitor core in the containing cavity 11 when the capacitor core is punctured, the current sensor detects that the resistance value of the capacitor core is reduced to be close to zero, so that the coil 52 is powered on, magnetism is generated between the capacitor core and the fixed block 51 and the connecting rod 5, the parallel rod 4 connected with the connecting rod 5 is driven to move to limit the capacitor core in the containing cavity 11 by attraction of the magnet 7, and the capacitor core is prevented from being exploded in the detection process so as to cause danger to personal safety.

The parallel rod 4 is provided with the limiting part 41, the limiting part 41 can limit the capacitor core in the accommodating cavity 11, and the limiting part 41 is arranged to increase the contact area with the capacitor core, so that the limiting operation of the capacitor core is conveniently completed.

The both ends of locating part 41 are provided with arch 411, and arch 411 is the elastic component of deformability, is provided with on the base 1 to hold the spacing hole 12 that supplies arch 411 to pass through, is provided with the side opening 13 that holds arch 411 on the spacing hole 12 lateral wall, and arch 411 and side opening 13 are the block fit mutually. Through being provided with side opening 13 and making the arch 411 of elastic component get into side opening 13 along the pore wall when taking place deformation with spacing hole 12 bottom contact, with side opening 13 looks block and join in marriage, accomplish the locking, improve the block of locating part 41 with base 1 and join in marriage, prevent the explosive impact of electric capacity core, improve the security performance.

A cavity 14 is arranged in the base 1, and a stripping device for ejecting the lug 33 from the side hole 13 is arranged in the cavity 14. The releasing device is arranged, so that the clamping fit between the limiting part 41 and the base 1 can be simply released after the detection is finished, and the operation is simple and convenient.

The cavity 14 is communicated with the side hole 13, the releasing device comprises a button 141, a first connecting piece 142 and a second connecting piece 143, one end of the first connecting piece 142 is fixedly connected with the button 141, one end far away from the button 141 is provided with a compressible compression spring 144, the cavity 14 is provided with an opening communicated with the outside, the opening is positioned on the side wall of the base 1, the button 141 penetrates through the opening on the cavity 14 and extends out of the surface of the base 1, one end, far away from the first connecting piece 142, of the compression spring 144 is connected with the inner wall of the cavity 14, one end of the second connecting piece 143 is hinged with the first connecting piece 142, the other end of the second connecting piece is hinged with a sliding. The button 141 extending out of the surface of the base 1 is arranged to control, when the button 141 is pressed, the first connecting piece 142 is driven to move, the compression spring 144 is squeezed, and meanwhile, the second connecting piece 143 drives the sliding block 145 to axially move along the side hole 13 to push the protrusion 411 out of the side hole 13 in a hinged state, so that a user can simply and conveniently finish the purpose of releasing the limiting piece 41 from the base 1.

The limiting member 41 is arc-shaped and matched with the capacitor core. The capacitor core is matched with the capacitor core in shape, the contact area is increased, the capacitor core is wrapped, the capacitor core is prevented from being accidentally separated, and the limiting effect is better when the protection device is started.

The utility model discloses before the detection begins, the user will correspond the electric capacity core of quantity and place in fixture's the corresponding centre gripping station, start through drive assembly 2 and drive locking assembly 3 and accomplish the centre gripping to the electric capacity core, during the detection, if the electric capacity core suffers the breakdown, protection device starts to be spacing in accomodating chamber 11 with the electric capacity core, starts the deviating device after the end detects and takes out the electric capacity core, accomplishes the testing process.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a multistation electric capacity core withstand voltage strength tester, including base (1), characterized by: the base (1) is provided with a plurality of stations for detecting the capacitor core, and further comprises a clamping mechanism, the clamping mechanism is used for clamping two ends of the capacitor core, the clamping mechanism comprises a transmission component (2) and a locking component (3), the transmission component (2) is used for adjusting the locking state of the locking component (3), the transmission component (2) is fixedly connected with the base (1), the locking components (3) are located at two ends of the capacitor core, the two locking components (3) are used for clamping the capacitor core, the transmission component (2) comprises a fixing part (21), a horizontal rod (22) and a moving part (23), the two locking components (3) are arranged at two axial ends of the horizontal rod (22), one end of the fixing part (21) is fixedly connected with the base (1), the other end of the fixing part is connected with the horizontal rod (22), the horizontal rod (22) is hollow and is provided with a sliding cavity (221) for sliding the moving part (23), the movable piece (23) is connected in the sliding cavity (221) in a sliding mode through the sliding block, one end, extending out of the sliding cavity (221), of the movable piece (23) is connected with the locking assembly (3), a bidirectional screw rod motor (222) is arranged in the sliding cavity (221), two ends of the bidirectional screw rod motor (222) comprise screw rods with threads arranged in a reverse mode, the two screw rods are respectively in threaded connection with the movable piece (23), and the bidirectional screw rod motor (222) drives the movable piece (23) to axially slide along the sliding cavity (221).

2. The multi-station capacitor core withstand voltage tester according to claim 1, wherein: the locking assembly (3) comprises a supporting rod (31) and a plurality of swing rod units (32), the supporting rod (31) is fixedly connected with the moving part (23), a sliding groove (311) is formed in the supporting rod (31), the plurality of swing rod units (32) are arranged along the length direction of the sliding groove (311), each swing rod unit (32) comprises two swing rods with one ends hinged, a convex block (33) is arranged at the other end of each swing rod, the convex block (33) can slide along the sliding groove (311) in a reciprocating mode, the swing rods are hinged with the convex blocks (33), a telescopic reset spring (312) is arranged between each convex block (33) close to the side walls at the two ends of the sliding groove (311) and the side walls at the two ends of the sliding groove (311), two adjacent swing rods of the two swing rod units (32) are hinged to the same convex block (33) together, and the plurality of swing rod units (32) comprise two first swing, the utility model discloses a capacitor core, including first pendulum rod unit, second pendulum rod unit, first pendulum rod unit articulated one end is provided with grip block (321), second pendulum rod unit articulated one end is provided with and supports touch pad (322), first pendulum rod unit is located electric capacity core both sides, two form a centre gripping clearance with adjustable size between grip block (321), second pendulum rod unit is located between each first pendulum rod unit, it is used for inconsistent with electric capacity core to support touch pad (322).

3. The multi-station capacitor core withstand voltage tester according to claim 2, wherein: the clamping block (321) comprises a connecting section and a clamping section, the connecting section is fixedly connected with the first swing rod unit, the clamping section is used for clamping the capacitor core, one end, far away from the connecting section, of the clamping section is provided with an inclined plane, and the inclined planes on the clamping block (321) are arranged oppositely.

4. The multi-station capacitor core withstand voltage tester according to claim 2, wherein: the contact block (322) is provided with a pressure sensor and a salient point (323) for triggering sensing, the pressure sensor is electrically connected with the bidirectional screw rod motor (222), and when the salient point (323) is contacted with the capacitor core, the power of the bidirectional screw rod motor (222) is gradually reduced until the bidirectional screw rod motor stops operating.

5. The multi-station capacitor core withstand voltage tester according to claim 1, wherein: the capacitor protection device is characterized by further comprising a protection device, wherein the protection device comprises a parallel rod (4), two connecting rods (5), two limiting plates (6) and a magnet, a containing cavity (11) capable of containing a capacitor core is formed in the base (1), the parallel rod (4) is located on one side, far away from the containing cavity (11), of the capacitor core, a current sensor for detecting the capacitor core is arranged on the parallel rod (4), two ends of the parallel rod (4) are respectively connected with the connecting rods (5), the two limiting plates (6) are respectively located on two sides of the base (1) and fixedly connected with the base (1), a middle hole is formed in each limiting plate (6), the two connecting rods (5) are respectively located on two sides of the base (1), the other end, far away from the parallel rod (4), of each connecting rod (5) penetrates through the middle hole and is provided with a fixing block (51), and the fixing block (51) and, be provided with coil (52) of winding connecting rod (5) between fixed block (51) and limiting plate (6), coil (52) electricity is connected with control circuit, and this control circuit is connected with current sensor electricity, sends signal for control circuit when current voltage sensor surpasss and sets for the threshold value, and control circuit and coil (52) form a closed circular telegram circuit, magnet and base (1) fixed connection, be provided with the interval between magnet and coil (52).

6. The multi-station capacitor core withstand voltage tester according to claim 5, wherein: the parallel rod (4) is provided with a limiting piece (41), and the limiting piece (41) can limit the capacitor core in the accommodating cavity (11).

7. The multi-station capacitor core withstand voltage tester according to claim 6, wherein: locating part (41) both ends stretch into in accomodating chamber (11), locating part (41) both ends are provided with protruding (411), protruding (411) are the elastic component of deformability, be provided with on base (1) and hold spacing hole (12) that supply protruding (411) to pass through, lateral wall is provided with side opening (13) that hold protruding (411) on spacing hole (12), protruding (411) and side opening (13) are the block fit mutually.

8. The multi-station capacitor core withstand voltage tester according to claim 7, wherein: a cavity (14) is arranged in the base (1), and a stripping device for ejecting the protrusion (411) from the side hole (13) is arranged in the cavity (14).

9. The multi-station capacitor core withstand voltage tester according to claim 8, wherein: cavity (14) is linked together with side opening (13), it includes button (141), first connecting piece (142) and second connecting piece (143) to deviate from the device, first connecting piece (142) one end and button (141) fixed connection, the one end of keeping away from button (141) are provided with compressible compression spring (144), be provided with the opening with outside intercommunication on cavity (14), the opening is located base (1) lateral wall, opening that button (141) passed on cavity (14) stretches out base (1) surface, the one end that first connecting piece (142) were kept away from in compression spring (144) links to each other with cavity (14) inner wall, second connecting piece (143) one end is articulated mutually with first connecting piece (142), and the other end is articulated to be provided with sliding block (145), sliding block (145) are used for radially sliding in side opening (13).

10. The multi-station capacitor core withstand voltage tester according to claim 6, wherein: the limiting piece (41) is arc-shaped and matched with the capacitor core in shape.