CN216899936U

CN216899936U - Tensile test fixture and tensile property test device for surface-mounted device

Info

Publication number: CN216899936U
Application number: CN202220467181.9U
Authority: CN
Inventors: 陈景林; 朱金文; 温利冰
Original assignee: Shenzhen Hongjie Xingye Technology Co ltd
Current assignee: Shenzhen Hongjie Xingye Technology Co ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-07-05
Anticipated expiration: 2032-03-04

Abstract

The utility model discloses a tensile test fixture and a tensile property test device for a surface-mounted device, and relates to the technical field of chip test devices. The clamping device is reasonable in structure, compared with a rigid clamping mode for the circuit board in the prior art, the clamping device can prevent the circuit board from sliding to improve the clamping effect of the circuit board in the clamping process, can also play a role in protecting the circuit board, and can avoid the circuit board from being damaged due to overlarge clamping force on the premise of ensuring the clamping effect of the circuit board in the circuit board clamping process.

Description

Tensile test fixture and tensile property test device for surface-mounted device

Technical Field

The utility model relates to the technical field of chip testing devices, in particular to a tensile testing clamp and a tensile performance testing device for a surface-mounted device.

Background

The types of the circuit boards include ceramic circuit boards, alumina ceramic circuit boards, aluminum nitride ceramic circuit boards, PCB boards, aluminum substrate, high frequency boards, thick copper boards, impedance boards, FPC circuit boards, ultra-thin circuit boards, printed circuit boards, etc., wherein the FPC circuit boards are also called flexible circuit boards, the flexible circuit boards are made of polyimide or polyester films as base materials and have high reliability, and the excellent flexible printed circuit boards have the characteristics of high wiring density, light weight, thin thickness and good bending property, and the flexible circuit boards generally need to be subjected to tensile detection in the production process.

In the prior art, chinese patent document with publication number CN213456432U proposes a tensile test fixture for circuit board, which performs tensile test on the circuit board, and the slide base of two sets of electric sliding tables moves up and down to perform multi-angle tensile test on the fixed circuit board, however, when the circuit board is clamped by such a fixture to perform tensile test, it cannot be well correlated with a traction mechanism, and in addition, the clamping manner of rigid clamping is adopted in the prior art, so that the circuit board is easily damaged due to too large clamping force or continuous operation of the traction mechanism, therefore, we disclose a tensile test fixture for surface-mounted devices and a tensile performance test device to meet the tensile test requirement of the circuit board.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tensile test fixture and a tensile property test device for a surface-mounted device, so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a table pastes device tensile test anchor clamps, includes two fixed columns that the position is corresponding, one of them fixed mounting has the controller on the fixed column, two the top of fixed column all is equipped with the carrier assembly who is used for placing the circuit board, still fixedly connected with on the fixed column with controller electric connection's centre gripping subassembly, centre gripping subassembly is used for cooperating on the corresponding position carrier assembly carries out the centre gripping to the circuit board, just centre gripping subassembly still is used for detecting the centre gripping dynamics to the circuit board.

Preferably, the bottom of each of the two fixing columns is further provided with a traction assembly for driving the fixing columns to linearly reciprocate, each traction assembly comprises a linear slide rail and two electric sliders matched with the linear slide rails, the two fixing columns are respectively and fixedly mounted on the electric sliders at corresponding positions, and the two electric sliders are electrically connected with the controller.

Preferably, the bearing assembly comprises two bearing seats respectively matched with the corresponding fixed columns in position, the bottom ends of the two bearing seats are fixedly connected with a plurality of first sliding columns which are uniformly distributed, the top ends of the two fixed columns are also provided with a plurality of first sliding chutes respectively matched with the corresponding first sliding columns in position, the bottom ends of the plurality of first sliding columns are respectively sleeved in the corresponding first sliding chutes in a sliding manner, the first sliding columns are respectively sleeved with a plurality of supporting springs, and the two ends of each supporting spring are respectively fixedly connected to the bottom ends of the corresponding bearing seats and the top ends of the corresponding fixed columns.

Preferably, the top ends of the two bearing seats are fixedly connected with rubber pads for placing the circuit boards.

Preferably, the clamping assembly comprises two rubber clamping blocks corresponding to the positions of the rubber pads, one side of each fixed column is fixedly connected with a cylinder with the same height through a connecting arm, the telescopic ends of the cylinders are fixedly connected with clamping arms, one ends of the two clamping arms are respectively matched with the corresponding positions of the rubber pads and are connected with the rubber clamping blocks, and the two rubber clamping blocks are used for being matched with the rubber pads in the corresponding positions to compress the circuit board.

Preferably, the clamping assembly further comprises a pressure sensing unit electrically connected with the controller, one end of each of the two clamping arms is provided with a mounting groove, a fixed seat is fixedly mounted in each of the two mounting grooves, the center positions of the two fixed seats are respectively provided with the pressure sensing unit electrically connected with the controller, and the same pressure spring is fixedly connected between the input end of the pressure sensing unit and the rubber clamping block at the corresponding position;

two the second spout has still all been seted up to the one end of centre gripping arm, a plurality of on the same relative position the second spout with correspond all slide the cover on the fixing base and be equipped with common guide post, a plurality of on the same relative position the bottom fixed connection of guide post is same on the rubber clamp splice.

A surface-mounted device tensile property testing device comprises the surface-mounted device tensile testing clamp.

The utility model has the technical effects and advantages that:

1. the clamping device has a reasonable structure, the air cylinder runs, and when the circuit board is continuously pressed by the rubber clamping block, the supporting spring and the rubber pad continuously deform so as to match the clamping assembly to achieve an elastic clamping effect on the circuit board; in the process of clamping the circuit board, pressure information received by the circuit board is transmitted into the pressure sensing unit through the pressure spring, and the air cylinder is controlled to run to a corresponding stroke after being analyzed by the controller, so that the circuit board is prevented from being damaged due to overlarge clamping force on the premise of ensuring the clamping effect of the circuit board;

2. according to the test device, a series of pressure analysis is performed through the controller, the two electric sliding blocks are controlled to operate in a matched mode in real time after the circuit board is clamped by the clamping assembly, so that the circuit board is indirectly pulled to perform tensile test, and the test device is more scientific and reasonable compared with the existing circuit board tensile test device.

Drawings

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

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a perspective view of a carrier assembly according to the present invention;

FIG. 4 is a perspective view of the clamping assembly of the present invention.

In the figure: 1. a linear slide rail; 2. an electric slider; 3. fixing a column; 4. a controller; 5. a bearing seat; 6. a rubber pad; 7. a first chute; 8. a first traveler; 9. a support spring; 10. a connecting arm; 11. a cylinder; 12. a clamp arm; 13. mounting grooves; 14. a fixed seat; 15. a second chute; 16. a guide post; 17. a pressure sensing unit; 18. a pressure spring; 19. a rubber clamping block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a tensile test fixture for a surface-mounted device as shown in figures 1-4, which comprises two fixed columns 3 corresponding to each other in position, wherein a controller 4 is fixedly arranged on one fixed column 3, the top ends of the two fixed columns 3 are respectively provided with a bearing component for placing a circuit board, the fixed columns 3 are also fixedly connected with a clamping component electrically connected with the controller 4, the clamping component is used for clamping the circuit board by matching with the bearing component on the corresponding position, the clamping component is also used for detecting the clamping force on the circuit board, the bottoms of the two fixed columns 3 are also provided with traction components for driving the fixed columns 3 to do linear reciprocating movement, each traction component comprises a linear slide rail 1 and two electric slide blocks 2 matched with the linear slide rail 1, the two fixed columns 3 are respectively and fixedly arranged on the electric slide blocks 2 on the corresponding positions, and the two electric slide blocks 2 are both electrically connected with the controller 4, when needing to carry out tensile test to the circuit board, the circuit board that will wait to detect is placed on carrier assembly, and through the operation of controller 4 control centre gripping subassembly, thereby cooperation carrier assembly presss from both sides the both sides of circuit board tightly fixed, carrier assembly plays toughness support guard action to the circuit board at this in-process, secondly, pressure feedback through the centre gripping subassembly, the centre gripping dynamics of control centre gripping subassembly, compared with prior art, avoid adopting rigid centre gripping to cause the damage to the circuit board, and simultaneously, controller 4 can also be according to the operation of pressure feedback information control electric slider 2, with the realization with the best tensile test purpose of dynamics that compresses tightly, can avoid causing the circuit board to damage because of the centre gripping dynamics is too big, can play the tensile test tensile effect to the circuit board at the pulling force within range that corresponds pressure again.

Further, in the above scheme, the carrier assembly comprises two carrier seats 5 respectively matched with the corresponding fixed columns 3, the bottom ends of the two carrier seats 5 are fixedly connected with a plurality of first sliding columns 8 which are uniformly distributed, the top ends of the two fixed columns 3 are further provided with a plurality of first sliding chutes 7 respectively matched with the corresponding first sliding columns 8, the bottom ends of the plurality of first sliding columns 8 are respectively slidably sleeved in the corresponding first sliding chutes 7, the plurality of first sliding columns 8 are respectively sleeved with a supporting spring 9, two ends of the plurality of supporting springs 9 are respectively fixedly connected with the bottom ends of the corresponding carrier seats 5 and the top ends of the fixed columns 3, the top ends of the two carrier seats 5 are respectively and fixedly connected with rubber pads 6 for placing the circuit board, when the clamping assembly continuously compresses the circuit board, the supporting springs 9 and the rubber pads 6 continuously deform, so as to cooperate with the clamping assembly to exert an elastic clamping effect on the circuit board, compared with the rigid clamping mode of the circuit board in the prior art, the clamping device can prevent the circuit board from sliding, improve the clamping effect of the circuit board in the clamping process and protect the circuit board.

Further, in the above scheme, the clamping assembly comprises rubber clamping blocks 19 corresponding to two rubber pads 6, one side of each of the two fixing columns 3 is fixedly connected with a cylinder 11 with the same height through a connecting arm 10, the telescopic ends of the two cylinders 11 are fixedly connected with clamping arms 12, one ends of the two clamping arms 12 are respectively matched with the corresponding rubber pads 6 and are respectively connected with the rubber clamping blocks 19, the two rubber clamping blocks 19 are used for matching with the rubber pads 6 on the corresponding positions to press the circuit board, the clamping assembly further comprises pressure sensing units 17 electrically connected with the controller 4, one ends of the two clamping arms 12 are respectively provided with mounting grooves 13, fixing seats 14 are respectively and fixedly mounted in the two mounting grooves 13, the center positions of the two fixing seats 14 are respectively provided with the pressure sensing units 17 electrically connected with the controller 4, the same pressure spring 18 is fixedly connected between the input ends of the pressure sensing units 17 and the rubber clamping blocks 19 on the corresponding positions, second spout 15 has still all been seted up to the one end of two centre gripping arms 12, all slide the cover on a plurality of second spouts 15 on the same relative position and the fixing base 14 that corresponds and be equipped with common guide post 16, the bottom fixed connection of a plurality of guide posts 16 on the same relative position is on same rubber clamp splice 19, centre gripping circuit board in-process, transmit the pressure information that the circuit board received to pressure sensing unit 17 in through pressure spring 18, control cylinder 11 moves to corresponding stroke after the analysis of controller 4, and then avoid causing the circuit board to damage because of the centre gripping dynamics is too big under the prerequisite of guaranteeing the circuit board centre gripping effect, and simultaneously, guide effect through second spout 15 and guide post 16, make rubber clamp splice 19 can stable vertical migration, further guarantee that the received result of pressure sensing unit 17 is accurate.

The utility model provides a table pastes device tensile property testing arrangement, includes foretell table pastes device tensile test anchor clamps, through controller 4 to a series of pressure analysis, two electronic slider 2 adaptation operations of real time control behind centre gripping subassembly clamping circuit board to indirect traction circuit board carries out the tensile test, compares in current circuit board tensile testing arrangement, and the device is scientific and reasonable more.

This practical theory of operation: when the air cylinder 11 operates and the circuit board is continuously pressed through the rubber clamping block 19, the supporting spring 9 and the rubber pad 6 continuously deform, so that the clamping assembly is matched to achieve an elastic clamping effect on the circuit board, and compared with a rigid clamping mode for the circuit board in the prior art, the clamping device can prevent the circuit board from sliding to improve the clamping effect of the circuit board in the clamping process and can protect the circuit board; centre gripping circuit board in-process, transmit the pressure information that the circuit board received to pressure sensing unit 17 in through pressure spring 18, control cylinder 11 moves to corresponding stroke after 4 analysis of controller, and then avoid causing the circuit board to damage because of the centre gripping dynamics is too big under the prerequisite of guaranteeing the circuit board centre gripping effect, in addition, through 4 to a series of pressure analysis of controller, two electronic slider 2 adaptation operations of real-time control behind centre gripping subassembly clamping circuit board, thereby indirectly pull the circuit board, carry out the tensile test, compare in current circuit board tensile testing arrangement, scientific and reasonable more.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a surface mounting device tensile test anchor clamps which characterized in that: the clamping device comprises two fixing columns (3) corresponding to each other in position, wherein a controller (4) is fixedly mounted on one fixing column (3), a bearing assembly used for placing a circuit board is arranged at the top end of the fixing column (3), a clamping assembly electrically connected with the controller (4) is fixedly connected onto the fixing column (3), the clamping assembly is used for being matched with the bearing assembly in the corresponding position to clamp the circuit board, and the clamping assembly is further used for detecting clamping force of the circuit board.

2. The surface-mounted device tensile test fixture of claim 1, characterized in that: the bottom of the two fixing columns (3) is also provided with a traction assembly used for driving the fixing columns (3) to do linear reciprocating movement, the traction assembly comprises a linear slide rail (1) and two electric sliders (2) matched with the linear slide rail (1), the two fixing columns (3) are respectively and fixedly installed on the electric sliders (2) in corresponding positions, and the two electric sliders (2) are electrically connected with the controller (4).

3. The surface-mounted device tensile test fixture of claim 2, characterized in that: the bearing assembly comprises two bearing seats (5) which are respectively matched with the corresponding fixed columns (3) in position, wherein the two bearing seats (5) are fixedly connected with a plurality of first sliding columns (8) which are uniformly distributed at the bottom ends of the bearing seats (5), a plurality of first sliding chutes (7) which are respectively matched with the corresponding first sliding columns (8) in position are further formed in the top ends of the fixed columns (3), the bottom ends of the first sliding columns (8) are respectively sleeved in the corresponding first sliding chutes (7) in a sliding mode, a plurality of supporting springs (9) are sleeved on the first sliding columns (8), and the two ends of the supporting springs (9) are respectively and fixedly connected with the corresponding bottom ends of the bearing seats (5) and the top ends of the fixed columns (3).

4. The surface-mounted device tensile test fixture of claim 3, characterized in that: the top ends of the two bearing seats (5) are fixedly connected with rubber pads (6) used for placing the circuit boards.

5. The surface-mounted device tensile test fixture of claim 4, characterized in that: the centre gripping subassembly contains with two rubber clamp splice (19) that rubber pad (6) position is corresponding, two one side of fixed column (3) all is through linking arm (10) fixedly connected with highly uniform cylinder (11), two the equal fixedly connected with centre gripping arm (12) of flexible end of cylinder (11), two the one end of centre gripping arm (12) respectively with correspond rubber pad (6) position looks adaptation and all be connected with rubber clamp splice (19), two rubber clamp splice (19) are used for the cooperation to correspond rubber pad (6) on the position and compress tightly the circuit board.

6. The surface-mounted device tensile test fixture of claim 5, characterized in that: the clamping assembly further comprises a pressure sensing unit (17) electrically connected with the controller (4), one end of each of the two clamping arms (12) is provided with a mounting groove (13), fixing seats (14) are fixedly mounted in the two mounting grooves (13), the center positions of the two fixing seats (14) are respectively provided with the pressure sensing unit (17) electrically connected with the controller (4), and the same pressure spring (18) is fixedly connected between the input end of the pressure sensing unit (17) and the rubber clamping block (19) at the corresponding position;

two second spout (15) have still all been seted up to the one end of centre gripping arm (12), and is a plurality of on the same relative position second spout (15) with correspond all slide the cover on fixing base (14) and be equipped with common guide post (16), a plurality of on the same relative position the bottom fixed connection of guide post (16) is same on rubber clamp splice (19).

7. A surface-mounted device tensile property testing device is characterized by comprising the surface-mounted device tensile testing clamp of any one of claims 1-6.