CN214472683U

CN214472683U - DBC test bench

Info

Publication number: CN214472683U
Application number: CN202120733545.9U
Authority: CN
Inventors: 蒲辰
Original assignee: Xi'an Changhe Semiconductor Technology Co ltd
Current assignee: Xi'an Changhe Semiconductor Technology Co ltd
Priority date: 2021-04-11
Filing date: 2021-04-11
Publication date: 2021-10-22
Anticipated expiration: 2031-04-11

Abstract

The utility model provides a DBC test bench, which comprises a base and an L-shaped frame plate fixed on the base, wherein a support plate is fixed on the L-shaped frame plate, a sleeve is fixed at the position close to the top end of the support plate, a rotating shaft of a rotating disc is rotationally connected in the sleeve, a loop bar is fixed at the position close to the periphery of the outer side of the rotating disc, a loop ring is sleeved at the outer side of the loop bar, a link mechanism is fixed outside the loop ring, the bottom end of the link mechanism is connected with an upper test plate through a bolt, a support seat is pasted on the base, a lower test plate is fixed on the support seat, the test operation of DBC is completed under the synergistic action of the upper test plate and the lower test plate, a hollow cavity is arranged in the middle of the support seat, a pressure sensor is arranged in the hollow cavity, the pressure sensor completes the collection of the pressure on the lower test plate in the test process, when the pressure information is greater than the upper limit value of the pressure, a controller controls an electromagnet to complete the magnetic attraction action on one side of the rotating shaft, the damage of DBC can be avoided, and the test stability is improved.

Description

DBC test bench

Technical Field

The utility model belongs to the technical field of the DBC testboard, concretely relates to DBC testboard.

Background

The failure mode of the DBC substrate is related to various factors such as substrate materials, interface strength, residual stress in the manufacturing process, process defects, borne load and the like; where the influence of the interface strength is large. In the case of not considering the singular point of the interface, the testing process of the DBC is completed by defining the normal stress perpendicular to the interface of the DBC substrate as the peeling stress and the surface force acting on the interface of the substrate as the shearing force, and the corresponding strengths are respectively called as the peeling strength and the shearing strength as the parameters for evaluating the strength of the DBC substrate.

However, in the use process of the existing small manual DBC test bench, due to experience of operators and the existence of errors, pressure acting on a DBC board in the test process is unstable, the pressure is too high or the DBC board is damaged, and the orderly operation of the test operation is affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve lies in to above-mentioned prior art not enough, provides a DBC testboard to solve the problem that proposes in the above-mentioned background art.

In order to solve the technical problem, the utility model discloses a technical scheme is: a DBC test bench comprises a base and an L-shaped frame plate fixed on the base, wherein a support plate is fixed on the L-shaped frame plate, a sleeve is fixed at the position, close to the top end, of the support plate, a rotating shaft of a rotating disc is rotatably connected in the sleeve, and a handle is fixed on the other side of the rotating shaft;

the outside of carousel is close to periphery department and is fixed with the loop bar, the lantern ring has been cup jointed in the loop bar outside, the lantern ring external fixation has link mechanism, there is the survey test panel in link mechanism's bottom through bolted connection, it has the supporting seat to paste on the base, be fixed with on the supporting seat and survey the board down survey test panel and survey the test operation of accomplishing DBC under the synergism that surveys the board down on.

Preferably, link mechanism includes first connecting rod, second connecting rod, spacing section of thick bamboo and mounting panel, the outside at the lantern ring is fixed on the top of first connecting rod, rotate between the bottom of first connecting rod and the top of second connecting rod and be connected, spacing section of thick bamboo is fixed on L type frame plate, the centre of second connecting rod cup joints in spacing section of thick bamboo, the bottom mounting of second connecting rod has the mounting panel.

Preferably, the four end corners of the mounting plate are respectively provided with a threaded through hole for connecting with the upper test plate through bolts.

Preferably, a hollow cavity is formed in the middle of the supporting seat, pressure sensors are mounted at four end corners in the hollow cavity respectively, the pressure sensors are connected with controllers matched with the pressure sensors in model mode respectively through signals, and collection of pressure information on the lower testing board in the testing process is completed through the pressure sensors.

Preferably, an electromagnet is further arranged on the inner bottom side of the sleeve, the rotating shaft of the rotary table is an iron shaft, a switch of the electromagnet is also in signal connection with the controller, and the magnetic attraction locking of the rotating shaft of the rotary table in the sleeve can be completed by controlling the electromagnet to be turned on through the controller.

Preferably, a rubber sleeve is sleeved on the outer side of the transverse section of the handle.

Preferably, supporting legs are respectively fixed at four corners of the bottom surface of the base.

Compared with the prior art, the utility model has the following advantage:

the utility model discloses a paste on the base has the supporting seat, be fixed with lower test panel on the supporting seat, the cavity has been seted up in the middle of the supporting seat, install pressure sensor respectively at four end angles in the cavity, pressure sensor signal connection has the controller, four pressure sensor gather the pressure that upper and lower test panel of supporting seat received respectively when testing, then transmit pressure information respectively to the controller in, the controller carries out average processing to the pressure information that gathers, can accomplish the collection of the pressure information on lower test panel in the test process through pressure sensor, the extension board is close to top department and is fixed with the sleeve, the pivot of carousel is connected with the pivot of sleeve internal rotation, the pivot of carousel is the iron axle, still be provided with the electro-magnet in the sleeve, open through controller control electro-magnet and can accomplish the magnetic attraction locking of the pivot of carousel in the sleeve, specific pressure upper limit value has been preset in the controller, when the pressure information of gathering is greater than the pressure upper limit value, the controller control electro-magnet is opened, and the electro-magnet accomplishes the magnetic attraction effect to countershaft one side, can increase the resistance of rotation in-process, can remind operating personnel, also can avoid continuing the pressure boost to cause the damage of DBC test in-process test sample, has improved the stability of testing.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a side view of the overall structure of the present invention.

Description of reference numerals:

the test device comprises a base 1, an L-shaped frame plate 2, a supporting seat 3, a hollow cavity 31, a pressure sensor 32, a supporting plate 4, a sleeve 41, a handle 42, a turntable 5, a loop bar 51, a loop ring 52, a first connecting rod 53, a second connecting rod 54, a limiting cylinder 55, a mounting plate 56, a test plate 6, a lower test plate 7 and an electromagnet 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-2, the utility model provides a technical solution: the utility model provides a DBC testboard, includes base 1 and fixes L type frame plate 2 on base 1, it has supporting seat 3 to paste on the base 1, be fixed with on the supporting seat 3 and survey test panel 7 down, survey test panel 7 down and be used for cooperating the DBC test.

Well cavity 31 has been seted up to the centre of supporting seat 3, four extreme angle departments install pressure sensor 32 respectively in well cavity 31, signal connection between pressure sensor 32 and the controller that its model matches respectively, four pressure sensor 32 gather the pressure that test panel 7 received about supporting seat 3 respectively when testing, then convey pressure information respectively to the controller in, the controller carries out average treatment to the pressure information who gathers, can accomplish the collection that test panel 7 went up to the pressure information under in the test process through pressure sensor 32.

A support plate 4 is fixed on the L-shaped frame plate 2, a sleeve 41 is fixed on the support plate 4 near the top end, a rotating shaft of the rotating disc 5 is connected in the sleeve 41 in a rotating way, the rotating shaft of the rotating disc 5 is an iron shaft, an electromagnet 8 is further arranged at the inner bottom side of the sleeve 41, a switch of the electromagnet 8 is also in signal connection with the controller, the magnetic attraction locking of the rotating shaft of the rotating disc 5 in the sleeve 41 can be completed by controlling the electromagnet 8 to be opened through the controller, specifically, the upper limit value of the pressure is preset in the controller, when the collected pressure information is larger than the upper limit value of the pressure, the controller controls the electromagnet 8 to be started, the electromagnet 8 completes the magnetic attraction effect on one side of the rotating shaft, can increase the resistance that rotates the in-process, can remind operating personnel, also can avoid continuing the pressure boost to cause the damage of DBC test in-process test sample, improve the stability of test.

In order to facilitate the operation of the rotating disc 5 by an operator to rotate, the handle 42 is fixed on the other side of the rotating shaft, a rubber sleeve is sleeved on the outer side of the transverse section of the handle 42, and the operator can drive the rotating disc 5 to rotate by holding the rubber sleeve of the handle 42 by hand when the rotating disc is used.

The outer side of carousel 5 is close to periphery department and is fixed with loop bar 51, loop bar 51 has cup jointed lantern ring 52 in the outside, lantern ring 52 external fixation has link mechanism, link mechanism includes first connecting rod 53, second connecting rod 54, spacing section of thick bamboo 55 and mounting panel 56, the outside at the lantern ring 52 is fixed on the top of first connecting rod 53, rotate between the bottom of first connecting rod 53 and the top of second connecting rod 54 and be connected, spacing section of thick bamboo 55 is fixed on L type frame plate 2, the middle cover of second connecting rod 54 connects in spacing section of thick bamboo 55, and carousel 5 rotates and can drive second connecting rod 54 and carry out reciprocating motion from top to bottom in spacing section of thick bamboo 55.

The bottom end of the second connecting rod 54 is fixed with a mounting plate 56, four end corners of the mounting plate 56 are respectively provided with a threaded through hole for connecting with the upper test plate 6 through a bolt, so that different types of test plates can be conveniently replaced, and the test operation of the DBC is completed under the synergistic action of the upper test plate 6 and the lower test plate 7.

In order to adjust the levelness of the upper surface of the base 1 in the testing process, supporting legs 11 are respectively fixed at four corners of the bottom surface of the base 1. The levelness of the base 1 can be adjusted by utilizing the supporting legs 11, so that the matching test is convenient to carry out.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The DBC test bench is characterized by comprising a base (1) and an L-shaped frame plate (2) fixed on the base (1), wherein a support plate (4) is fixed on the L-shaped frame plate (2), a sleeve (41) is fixed at the position, close to the top end, of the support plate (4), a rotating shaft of a rotating disc (5) is connected in the sleeve (41) in a rotating mode, and a handle (42) is fixed on the other side of the rotating shaft;

the outside of carousel (5) is close to periphery department and is fixed with loop bar (51), the lantern ring (52) has been cup jointed in loop bar (51) outside, lantern ring (52) external fixation has link mechanism, link mechanism's bottom has last survey test panel (6) through bolted connection, it has supporting seat (3) to paste on base (1), be fixed with down on supporting seat (3) and survey test panel (7) on survey test panel (6) and survey test panel's (7) synergism down and accomplish DBC's test operation down.

2. The DBC test bench according to claim 1, wherein the linkage mechanism comprises a first connecting rod (53), a second connecting rod (54), a limiting cylinder (55) and a mounting plate (56), the top end of the first connecting rod (53) is fixed on the outer side of the sleeve ring (52), the bottom end of the first connecting rod (53) is rotatably connected with the top end of the second connecting rod (54), the limiting cylinder (55) is fixed on the L-shaped frame plate (2), the middle of the second connecting rod (54) is sleeved in the limiting cylinder (55), and the mounting plate (56) is fixed at the bottom end of the second connecting rod (54).

3. The DBC test bench according to claim 2, wherein the four corners of the mounting plate (56) are respectively provided with a threaded through hole for connecting with the upper test plate (6) through bolts.

4. The DBC test bench according to claim 1, wherein a hollow cavity (31) is formed in the middle of the support base (3), pressure sensors (32) are respectively mounted at four corners in the hollow cavity (31), the pressure sensors (32) are respectively in signal connection with controllers of the same type, and collection of pressure information on the lower test board (7) in the test process is completed through the pressure sensors (32).

5. The DBC test bench according to claim 4, wherein an electromagnet (8) is further arranged at the inner bottom side of the sleeve (41), a rotating shaft of the turntable (5) is an iron shaft, a switch of the electromagnet (8) is also in signal connection with a controller, and the magnetic attraction locking of the rotating shaft of the turntable (5) in the sleeve (41) can be completed by controlling the electromagnet (8) to be turned on through the controller.

6. The DBC test bench according to claim 1, characterized in that a rubber sleeve is sleeved outside the lateral section of the handle (42).

7. The DBC test bench according to claim 1, wherein a foot (11) is fixed to each of the four corners of the bottom surface of the base (1).