CN204287407U - Flat-crushing type Multipurpose die blocking proving installation - Google Patents

Abstract

The utility model belongs to the technical field of testing devices, in particular to a flat-pressing multi-purpose modular testing device, comprising a base plate, a mounting plate, an elastic tray, a pressing component and a clamping component, and the elastic tray is arranged on the mounting plate , the mounting plate is arranged above the base plate, the clamping component includes an upper hook and a lower hook, the pressing component is connected to the upper hook, and the lower hook is arranged on the installation On the board, the upper hook is matched with the lower hook. Compared with the prior art, the utility model sets the pressing cam and the limit tray so that the pressing assembly can be gentle and stable when pressed to the PCB board, so that the PCB board will not be deformed, and the solder joints on the PCB board will not fall off. And when the lower pressure component is pressed on the PCB board to be tested, the mutual cooperation of the upper hook and the lower hook can make the contact surface of the test block connected with the probe and the PCB board closely adhere to ensure good contact between the two. Thereby, the test accuracy can be improved.

Description

Flat pressure multi-purpose modular test device

technical field

The utility model belongs to the technical field of testing devices, in particular to a flat-pressure multi-purpose modular testing device for PCB detection.

Background technique

Before installing the PCB board into a mobile terminal such as a mobile phone or a battery, etc., the PCB board needs to be inspected first. At present, the commonly used detection methods include multimeter test method and ICT online test method. Among them, the ICT online test method is a standard test method for checking the manufacturing defects and defective components by testing the electrical properties and electrical connections of online components. It can quantitatively measure resistance, capacitance, inductance, crystal oscillator and other devices, and perform functional tests on diodes, transistors, optocouplers, transformers, relays, operational amplifiers, power modules, etc. It finds defects in the manufacturing process and defective components by directly testing the electrical properties of the online devices. The component class can check out the out-of-tolerance, failure or destruction of the component value, the program error of the Memory class, etc. For the process category, it can be found that such as solder short circuit, component insertion error, reverse insertion, missing installation, pin lift, virtual soldering, etc.

However, in the prior art, most of the fixtures used to clamp the PCB board are quick clamps or flip-type press-fitting fixtures. The strength of these fixtures is not easy to control, so it is easy to cause deformation of the PCB, thereby easily causing the solder joints on the PCB to fall off. This leads to a higher false positive rate. In addition, the probes in the prior art use double-ended needles, and the pass-through rate of the test in this way is relatively low.

In view of this, it is indeed necessary to provide a flat-press type multi-purpose modular testing device for PCB inspection, which makes the fixture gentle and stable when pressed against the PCB board by adding the press-down cam and the limit tray, so that the PCB board does not Deformation will occur, the solder joints on the PCB will not fall off, and the PCB board is in good contact, which can improve the test accuracy.

Utility model content

The purpose of the utility model is to provide a flat-pressing multi-purpose modular testing device for PCB detection in view of the deficiencies of the prior art, which makes the clamp press against the PCB board by adding a pressing cam and a limit tray. The time is gentle and stable, so that the PCB board will not be deformed, the solder joints on the PCB board will not fall off, and the PCB board is in good contact, which can improve the test accuracy.

In order to achieve the above object, the utility model adopts the following technical solutions:

Flat pressure multi-purpose modular test device, including a base plate, a mounting plate, an elastic tray, a pressing assembly and a clamping assembly, the elastic tray is set on the mounting plate, and the mounting plate is set above the base plate, The clamping component includes an upper hook and a lower hook, the lower pressing component is connected with the upper hook, the lower hook is arranged on the mounting plate, the upper hook and the lower hook Hook to match.

As an improvement of the flat pressing multi-purpose modular testing device of the present invention, the elastic tray includes a bracket and a guide column, one end of the guide column is inserted in the bracket, and the other end of the guide column is penetrated A spring is formed on the mounting plate, and a region of the guide column between the bracket and the mounting plate surrounds it. The bracket is U-shaped.

As an improvement of the flat pressing multi-purpose modular testing device of the present invention, the elastic tray also includes a mounting bar arranged on the mounting plate, and the other end of the guide post is provided on the mounting bar. The through hole that passes through and can prevent the passage of the spring.

As an improvement of the utility model flat pressure multi-purpose modular testing device, the mounting plate is also provided with a clamping block for fixing the PCB board to be tested and a support block for supporting the clamping block. A support block is located between the clamping block and the mounting plate.

As an improvement of the flat-press multi-purpose modular testing device of the present invention, the press-down assembly includes a press-down plate and a press-down frame located above the press-down plate and capable of driving the press-down plate down, the press-down plate One end of the frame is connected to one side of the bracket through a hinge, and a test block connected with a probe is also provided under the lower pressure plate; the lower pressure frame includes a lower pressure handle, a left pressure frame, a right pressure frame and a rotating shaft , one end of the left pressing frame is connected to one end of the rotating shaft, the other end of the left pressing frame is connected to one end of the pressing handle; one end of the right pressing frame is connected to the other end of the rotating shaft, The other end of the right pressing frame is connected with the other end of the pressing handle; the opposite sides of the left pressing frame and the right pressing frame are provided with pressing cams, and the probe has a welded single head structure.

As an improvement of the flat pressing multi-purpose modular testing device of the present invention, the rotating shaft is pivotally connected between the left fixing block and the right fixing block, and both the left fixing block and the right fixing block are arranged on the mounting On the board, the left pressing frame is located between the left fixing block and the rotating shaft, and the right pressing frame is located between the right fixing block and the rotating shaft.

As an improvement of the utility model flat pressure multi-purpose modular testing device, the left pressure frame and the right pressure frame both include a first connecting section and a second connecting section, one end of the first connecting section and the One end of the second connecting section is connected, the other end of the first connecting section is connected with the rotating shaft, the other end of the second connecting section is connected with the push-down handle, the first connecting section and the An obtuse angle is formed between the second connecting segments.

As an improvement of the flat pressing multi-purpose modular testing device of the present invention, the clamping assembly also includes a hook handle and a connecting rod, and the upper hook and the connecting rod are both set to two, and two The upper hooks are respectively connected to one end of the hook handle through one of the connecting rods, and the connecting areas of the two upper hooks and the two connecting rods are respectively fixed to the left push button by a revolving pin. shelf and the right press shelf.

As an improvement of the flat pressing multi-purpose modular testing device of the present invention, when the upper hook and the lower hook cooperate, the hook-shaped part of the lower hook is located at the hook-shaped part of the upper hook above.

As an improvement of the flat-press type multi-purpose modular testing device of the present invention, a support column is arranged between the base plate and the installation plate. A bearing fixing block is arranged on the back side of the lower pressing plate, and a bearing and a bearing rod are arranged on the bearing fixing block.

Compared with the prior art, the utility model sets the pressing cam and the limit tray so that the pressing assembly can be gentle and stable when pressed to the PCB board, so that the PCB board will not be deformed, and the solder joints on the PCB board will not fall off. And when the lower pressure component is pressed on the PCB board to be tested, the mutual cooperation of the upper hook and the lower hook can make the test block connected with the probe and the contact surface of the PCB board closely fit, ensuring good contact between the two. Thereby, the test accuracy can be improved.

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of the present utility model.

in:

1 - Substrate;

2 - mounting plate;

32-guide column, 33-spring, 34-installation bar;

4-Press down components;

421-press down handle, 422-left press frame, 423-right press frame, 424-rotating shaft, 425-press down cam, 426-left fixed block, 427-right fixed block, 428-first connecting section, 429-the first Two connecting sections, 44-bearing fixed block, 45-bearing, 46-bearing rod;

51-upper hook, 52-lower hook, 53-hook handle, 54-connecting rod, 55-return pin;

8 - Support column.

Detailed ways

The utility model and its beneficial effects will be further described in detail below in conjunction with the examples, but the implementation of the utility model is not limited thereto.

As shown in Figure 1, the flat-pressure multi-purpose modular testing device provided by the utility model includes a base plate 1, a mounting plate 2, an elastic tray, a pressing assembly 4 and a clamping assembly, the elastic tray is arranged on the mounting plate 2, and the The plate 2 is arranged on the top of the base plate 1, and the clamping assembly includes an upper hook 51 and a lower hook 52. The lower pressing component 4 is connected to the upper hook 51, and the lower hook 52 is arranged on the mounting plate 2. The upper hook 51 and The lower hook 52 matches.

The elastic tray includes a bracket and a guide post 32, one end of the guide post 32 is inserted in the bracket, the other end of the guide post 32 is penetrated on the mounting plate 2, and the area of the guide post 32 between the support and the mounting plate 2 encloses A spring 33 is provided. Wherein, the bracket is U-shaped, which includes two parallel longitudinal segments and a transverse segment whose two ends are respectively connected to the two longitudinal segments. The guide post 32 is installed below the longitudinal section, and there are four guide posts 32, two of which are installed below one longitudinal section, and the other two are installed below the other longitudinal section.

The elastic tray also includes a mounting bar 34 disposed on the mounting plate 2 , and the mounting bar 34 is provided with a first through hole through which the other end of the guide post 32 can pass and can prevent the spring 33 from passing through. The mounting bar 34 is also provided with a second through hole, and the mounting bar 34 can be fixed to the mounting plate 2 by connecting pieces such as screws passing through the second through hole. When the depressing assembly 4 is pressed on the elastic tray, the force given by the depressing assembly 4 to the elastic tray causes the guide post 32 to move downward and pass through the first through hole, but the spring 33 will not pass through the first through hole, but is in the position of Compressed state, therefore, the whole process is slowly pressed down under the resistance of spring 33. When the lower pressing assembly 4 is pressed down to the position, the cooperation of the upper hook 51 and the lower hook 52 can prevent the spring 33 from bouncing up due to the elastic force when the spring 33 is in a compressed state.

The mounting plate 2 is also provided with a clamping block for fixing the PCB board to be tested and a support block for supporting the clamping block. In the longitudinal direction, the support block is positioned between the clamping block and the mounting plate 2. In the transverse direction, the support block The block is located between the mounting strips 34; the support block is fixed on the mounting plate 2 by screwing. The clamping block includes a base and two protrusions arranged on the base, and a bar-shaped groove for clamping the PCB board to be tested is formed between the two protrusions and the base. Moreover, the protrusion is screwed on the base, and by adjusting the position of the protrusion, the width of the groove can be adjusted, so as to be suitable for PCB boards to be tested with different widths. The entire clamping block is replaceable. If the PCB board to be tested on it fails, the entire clamping block and the PCB board to be tested on it can be replaced directly, so that the production capacity of the production line will not be affected.

The lower pressing assembly 4 includes a lower pressing plate and a lower pressing frame that is positioned above the lower pressing plate and can drive the lower pressing plate to press down. One end of the lower pressing plate is connected to one side of the bracket through a hinge. This connection structure facilitates the pressing down and lifting of the lower pressing plate. ; The bottom of the lower pressure plate is also provided with a test block connected with a probe, which is connected to the PCB board to be tested through the probe, and then the probe is connected to the test instrument, and various performance tests can be performed on the PCB board to be tested by the test instrument; The press frame includes a press handle 421, a left press frame 422, a right press frame 423 and a rotating shaft 424, one end of the left press frame 422 is connected with an end of the rotating shaft 424, and the other end of the left press frame 422 is connected with an end of the press handle 421; One end of the right pressing frame 423 is connected with the other end of the rotating shaft 424, and the other end of the right pressing frame 423 is connected with the other end of the pressing handle 421; holding the pressing handle 421 can lift or press down the entire pressing frame. The opposite sides of the left pressing frame 422 and the right pressing frame 423 are all provided with a pressing cam 425, by which the motion of the pressing frame can be transmitted to the lower pressing plate through the pressing cam 425, so that the lower pressing plate is lifted or depressed, and the pressing The cam 425 can make the lower pressing plate smooth and stable in the process of pressing down, so that the PCB board to be tested will not be deformed, so that the contact between the probe and the PCB board to be tested is good. The probe has a welded single-head structure, and the probe of this structure is in good contact with each component on the PCB board to be tested, so that the pass-through rate can be significantly increased.

The rotating shaft 424 is axially connected between the left fixed block 426 and the right fixed block 427. The rotating shaft 424 can rotate in a circular motion. The left fixed block 426 and the right fixed block 427 are all arranged on the mounting plate 2. Between the fixed block 426 and the rotating shaft 424 , the right pressing frame 423 is located between the right fixing block 427 and the rotating shaft 424 . When the pressing handle 421 is held, the rotation of the rotating shaft 424 can drive the left pressing frame 422 and the right pressing frame 423 to move in a circular motion.

The left pressing frame 422 and the right pressing frame 423 both comprise a first connecting section 428 and a second connecting section 429, one end of the first connecting section 428 is connected with an end of the second connecting section 429, and the other end of the first connecting section 428 is connected to the rotating shaft 424, the other end of the second connecting section 429 is connected to the push-down handle 421, and an obtuse angle is formed between the first connecting section 428 and the second connecting section 429. This structure facilitates the installation of the clamping assembly.

The clamping assembly also includes a hook handle 53 and a connecting rod 54, the upper hook 51 and the connecting rod 54 are set to two, the two upper hooks 51 are arranged in parallel, and the two connecting rods 54 are also arranged in parallel; and the two upper The hooks 51 are respectively connected to one end of the hook handle 53 through a connecting rod 54, that is, one upper hook 51 is connected to one end of the hook handle 53 through a connecting rod 54, and the other upper hook 51 is connected through another connecting rod 54 Connected with the other end of the hook handle 53 , the connecting areas of the two upper hooks 51 and the two connecting rods 54 are respectively fixed on the left press frame 422 and the right press frame 423 through a rotating pin 55 . The setting of the revolving pin 55 is convenient for the upper hook 51 , the hook handle 53 and the connecting rod 54 to move around the left pressing frame 422 and the right pressing frame 423 . The hook handle 53 and the push-down handle 421 are arranged in parallel.

When the upper hook 51 and the lower hook 52 cooperate, the hook-shaped portion of the lower hook 52 is located above the hook-shaped portion of the upper hook 51 . In actual use, when the lower pressing frame drives the lower pressing plate to move downward, the upper hook 51 also moves downward thereupon until the hook shape of the upper hook 51 is hooked on the lower surface of the hook portion of the lower hook 52, that is, the test The block is firmly pressed on the PCB board to be tested to ensure the stable contact between the probe and the components on the PCB board to be tested during the test. When the test block needs to be uncovered, it is only necessary to hold the hook handle 53 and the push-down handle 421 tightly to their opposite side, so that the upper hook 51 can leave the lower hook 52, and at this moment, it can be rotated upwards. Press down the handle 421 to make the test block move upwards accordingly.

A supporting column 8 is arranged between the base plate 1 and the mounting plate 2, and the supporting column 8 is used to support the mounting plate 2, and at the same time, a space is formed between the base plate 1 and the mounting plate 2, and the space facilitates the protruding of the guide column.

The back side of lower pressing plate is provided with bearing fixed block 44, and bearing fixed block 44 is provided with bearing 45 and bearing bar 46, and the setting of bearing 45 is convenient to reduce the coefficient of friction in pressing down assembly 4 motion processes, and guarantees that the shaft center position is fixed.

When in use, first place the clamping block holding the PCB board to be tested on the support block, then hold the pressing handle 421, so that the entire pressing assembly 4 moves downward around the rotating shaft 424, and the pressing cam 425 will The movement of the left pressing frame 422 and the right pressing frame 423 is transmitted to the lower pressing plate, and makes the test block move toward the PCB board to be tested, and at the same time, due to the resistance of the spring, the entire lower pressing plate and the test block move steadily and slowly toward the PCB board to be tested. When the test block is in contact with the PCB board to be tested, the hook shape of the upper hook 51 is hooked on the lower surface of the hook portion of the lower hook 52 to prevent the push-down component 4 from being bounced, so that the probes on the test block are in contact with the PCB to be tested. The components on the board are in stable contact, and the PCB board to be tested has no deformation, and the test can be started.

After the test is completed, it is only necessary to hold the hook handle 53 and the push-down handle 421 to their opposite sides, so that the upper hook 51 can leave the lower hook 52. At this time, the push-down handle 421 can be rotated upwards. The test block moves upwards and leaves the PCB board to be tested.

If the PCB board to be tested fails, it is only necessary to replace the clamping block and the PCB board to be tested on it, so the production capacity of the production line will not be affected.

The utility model has a wide application range and can be applied to testing different PCB boards.

According to the disclosure and teaching of the above specification, those skilled in the art to which the present utility model belongs can also change and modify the above embodiment. Therefore, the utility model is not limited to the specific implementation manners disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model.

Claims (10)

1. Flat pressure multi-purpose modular test device, characterized in that: it includes a base plate, a mounting plate, an elastic tray, a pressing assembly and a clamping assembly, the elastic tray is arranged on the installation plate, and the installation plate is arranged on the Above the substrate, the clamping assembly includes an upper hook and a lower hook, the lower pressing assembly is connected to the upper hook, the lower hook is arranged on the mounting plate, and the upper hook Coordinate with the described lower card hook. 2. The flat-press type multi-purpose modular testing device according to claim 1, characterized in that: the elastic tray includes a bracket and a guide post, one end of the guide post is inserted in the support, and the guide post The other end of the guide post is passed through the mounting plate, and a spring is surrounded by a region of the guide column between the bracket and the mounting plate. 3. The flat pressing multi-purpose modular testing device according to claim 2, characterized in that: the elastic tray also includes a mounting bar arranged on the mounting plate, and the mounting bar is provided with a The other end of the guide post passes through and can prevent the through hole through which the spring passes. 4. The flat-pressure multi-purpose modular testing device according to claim 1, characterized in that: the mounting plate is also provided with a clamping block for fixing the PCB board to be tested and a clamping block for supporting the clamping block. A supporting block, the supporting block is located between the clamping block and the mounting plate. 5. The flat-press type multi-purpose modular testing device according to claim 2, characterized in that: the press-down assembly includes a press-down plate and a press-down frame located above the press-down plate and capable of driving the press-down plate to press down , one end of the lower pressing plate is connected to one side of the bracket through a hinge, and a test block connected with a probe is also provided under the lower pressing plate; the lower pressing frame includes a lower pressing handle, a left pressing frame, Right pressing frame and rotating shaft, one end of described left pressing frame is connected with one end of described rotating shaft, the other end of described left pressing frame is connected with one end of described pressing down handle; One end of described right pressing frame is connected with described rotating shaft The other end of the right pressing frame is connected with the other end of the pressing handle; the opposite side of the left pressing frame and the right pressing frame are provided with a pressing cam, and the probe It has a welded single-head structure. 6. The multi-purpose modular test device according to claim 5, characterized in that: the rotating shaft is pivotally connected between the left fixed block and the right fixed block, and both the left fixed block and the right fixed block are Set on the mounting plate, the left press frame is located between the left fixing block and the rotating shaft, and the right pressing frame is located between the right fixing block and the rotating shaft. 7. The flat-press type multi-purpose modular testing device according to claim 5, characterized in that: the left press frame and the right press frame both comprise a first connecting section and a second connecting section, and the first connecting section One end of the segment is connected to one end of the second connecting segment, the other end of the first connecting segment is connected to the rotating shaft, the other end of the second connecting segment is connected to the push-down handle, and the first connecting segment An obtuse angle is formed between the connection section and the second connection section. 8. The flat-pressure multi-purpose modular testing device according to claim 5, wherein the clamping assembly further includes a hook handle and a connecting rod, and the upper hook and the connecting rod are both arranged as two and the two upper hooks are respectively connected to one end of the hook handle through one of the connecting rods, and the connecting areas of the two upper hooks and the two connecting rods are respectively fixed by a revolving pin. On the left press frame and the right press frame. 9. The flat-pressure multi-purpose modular testing device according to claim 7, characterized in that: when the upper hook and the lower hook cooperate, the hook-shaped part of the lower hook is located on the upper hook The top of the hook-shaped part of the hook. 10. The flat-press type multi-purpose modular testing device according to claim 5, characterized in that: a bearing fixing block is arranged on the back of the lower pressing plate, and a bearing and a bearing rod are arranged on the bearing fixing block.