CN210442475U

CN210442475U - Key-press for testing circuit board

Info

Publication number: CN210442475U
Application number: CN201920750402.1U
Authority: CN
Inventors: 陈广权; 黄万演; 王开平; 邝家辉; 祝红军
Original assignee: Intelligent Automation Equipment Zhuhai Co Ltd
Current assignee: Intelligent Automation Equipment Zhuhai Co Ltd; Intelligent Automation Zhuhai Co Ltd
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-05-01
Anticipated expiration: 2029-05-23

Abstract

The utility model aims at providing a simple and convenient, space-saving, fixed reliable and circuit board that can adjust the power of striking of circuit board test key machine of structure. The utility model discloses a frame, and set up feeding module and test module in the frame, be equipped with in the frame with feeding module complex input/output port, the feeding module includes support, activity support plate module and compresses tightly the module, activity support plate module includes actuating mechanism and circuit board support plate, actuating mechanism drives the circuit board support plate is in input/output port and compress tightly the below of module and make reciprocal linear motion, compress tightly the module including fixing push down cylinder on the support, fix push down the connecting plate of the expansion end of cylinder and be equipped with the clamp plate of a plurality of button through-holes, the clamp plate fixed fit is in on the connecting plate, the test module is located compress tightly directly over the module. The utility model discloses be applied to the technical field of button test.

Description

Key-press for testing circuit board

Technical Field

The utility model relates to a machine of typing keys, in particular to circuit board test machine of typing keys.

Background

In the use process of a computer, a keyboard product is necessarily used, and the keyboard is a command and data input device for operating equipment, and also refers to a group of function keys such as a typewriter and a computer keyboard which are arranged to operate a machine or equipment through a system. The keyboard is the most common and main input device, and english letters, numbers, punctuations and the like can be input into the computer through the keyboard, so as to send commands, input data and the like to the computer. From the first printer to the present home computer, the keyboard is always used indiscriminately, the efficiency of inputting instructions is greatly improved, the work efficiency is improved for human beings, and more keyboard products with various shapes and functions are developed, so that the requirements on the yield of the keyboard products and the technical process are gradually improved. At present, the keyboards mainly used in the market are classified into mechanical keyboards, plastic film type keyboards, conductive rubber type keyboards and static capacitance keyboards without electric connection according to the working principle, wherein the plastic film type keyboards have no mechanical wear. The keyboard is characterized by low price, low noise and low cost, occupies most of the market, and is widely used in daily life, and the main test types of the keyboard on the market at present comprise a keyboard electrical characteristic test, a keyboard high-low temperature aging tester, a keyboard key reaction test, a keyboard sensitivity test, a keyboard internal light source luminous flux test and the like. According to simple keyboard key reaction testing equipment in the market, a used knocking testing device drives an eccentric wheel to rotate by a motor so that a connecting rod moves up and down back and forth to strike keys, and therefore the knocking force cannot be accurately controlled. Meanwhile, the keyboard is easy to shake in the testing process of the keyboard circuit board, the testing effect is inaccurate, and the circuit board is easy to be damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, provide a simple and convenient, save space, the fixed reliable circuit board test key machine that just can adjust the power of striking of circuit board of structure.

The utility model adopts the technical proposal that: the utility model discloses a frame, and set up feeding module and test module in the frame, be equipped with in the frame with feeding module complex input/output port, the feeding module includes support, activity support plate module and compresses tightly the module, activity support plate module includes actuating mechanism and circuit board support plate, actuating mechanism drives the circuit board support plate is in input/output port and compress tightly the below of module and make reciprocal linear motion, compress tightly the module including fixing push down cylinder on the support, fix push down the connecting plate of the expansion end of cylinder and be equipped with the clamp plate of a plurality of button through-holes, the clamp plate fixed fit is in on the connecting plate, the test module is located compress tightly directly over the module.

According to the scheme, the input circuit board to be tested is pressed and fixed through the pressing module, so that the circuit board is prevented from shaking in the knocking test process, and the circuit board structure is effectively protected. The press plate is provided with a plurality of key through holes, so that a knocking test is facilitated, and meanwhile, the non-key part of the circuit board is protected. Through test assembly and external environment are kept apart to the frame, and then prevent that outside dust granule from filling the moving part department of test assembly influence test assembly's performance and life, through setting up input/output port is used for the operator to carry out the material loading and the unloading of the circuit board that awaits measuring. The press plate is replaceable, and the press plate with different key through hole layouts is used, so that the circuit board testing keystroke machine can be suitable for testing circuit boards with different sizes. The driving mechanism is a common linear power mechanism.

According to a preferred scheme, the testing module comprises a longitudinal motion mechanism and a knocking mechanism, the longitudinal motion mechanism drives the knocking mechanism to do reciprocating linear motion along the vertical direction, the knocking mechanism comprises a fixing frame and a plurality of electromagnetic driving knocking assemblies fixed on the fixing frame, knocking heads are arranged at the bottoms of the electromagnetic driving knocking assemblies and penetrate through the fixing frame, and the electromagnetic driving knocking assemblies correspond to the key through holes in position one to one.

According to the scheme, the longitudinal motion mechanism is a common linear motion mechanism. The fixing frame is used for assembling a plurality of electromagnetic driving knocking components.

A further preferred scheme is, electromagnetic drive strikes the subassembly and includes the tubulose casing, sets up the ferromagnet of tubulose casing bottom, pass the tubulose casing with the electromagnet core of ferromagnet and with electromagnet core sliding fit's counter weight cover, electromagnet core's upper end is provided with spacing piece, the cover is equipped with reset spring on the electromagnet core, reset spring is located spacing piece with between the tubulose casing, electromagnet core's lower extreme is equipped with first stop bit architecture, counter weight cover's top be equipped with first stop bit architecture spacing complex first spout, around being equipped with the coil on the electromagnet core, strike first sliding fit and be in counter weight cover's lower extreme.

According to the scheme, the electromagnet core can automatically reset when the coil is powered off through the reset spring. When the coil is electrified, the electromagnet core generates a magnetic field and further generates attraction force with the electromagnet, the electromagnet is fixed at the bottom of the tubular shell, the electromagnet core moves downwards under the driving of magnetic force and compresses the reset spring, the first stop structure slides in the first sliding groove and releases the limit of the counterweight sleeve after the electromagnet core moves downwards, the counterweight sleeve performs free-falling body motion under the action of gravity, the knocking head further knocks a key of a circuit board to be tested under the self weight of the counterweight sleeve, and the pressing force is adjusted by changing the weight of the counterweight sleeve.

A second stopping structure is arranged at the upper end of the knocking head, a second sliding groove in limit fit with the second stopping structure is arranged at the lower portion of the counterweight sleeve, a buffer spring is sleeved on the knocking head, the upper end of the buffer spring is in contact with and limited by the bottom of the counterweight sleeve, and the lower end of the buffer spring is fixedly matched with the knocking head.

According to the scheme, the second stopping structure is matched with the second sliding groove to enable the knocking head to slide in the limited range on the counterweight sleeve, the buffering spring is arranged to enable the knocking head to be connected on the matching sleeve in a floating mode, and therefore the knocking head is prevented from being in rigid contact with a circuit board in the testing process, and the circuit board structure is effectively and reliably protected.

One preferable scheme is that a plurality of key through holes on the pressing plate correspond to the key positions of the circuit board to be tested one by one.

One preferred scheme is that the rack is further provided with a display, an operation panel, a warning lamp, a controller and a heat dissipation device.

Preferably, the circuit board testing and keying machine further comprises a code scanning gun arranged at the input and output port.

According to the scheme, the code scanning gun is arranged and used for identifying the number information of the circuit board to be tested and classifying the test data into the corresponding number, so that the test information is convenient to inquire.

Preferably, the fixed frame is provided with a handle.

According to the scheme, the handle is arranged to enable the knocking mechanism to be more convenient to replace aiming at the layout that different electromagnetic driving knocking components are needed to be used for different circuit boards.

Drawings

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

FIG. 2 is a schematic view of the feeding module and the testing module;

FIG. 3 is a schematic structural view of the feed module;

FIG. 4 is a schematic structural diagram of the test module;

FIG. 5 is a schematic structural view of the striking mechanism;

FIG. 6 is a schematic structural view of an initial state of the electromagnetic driven rapping assembly;

FIG. 7 is a schematic structural view of the solenoid-actuated rapping assembly in a just-energized state;

FIG. 8 is a schematic structural view of the electromagnetic driven rapping assembly in the energized state.

Detailed Description

As shown in fig. 1 to 5, in the present embodiment, the present invention includes a frame 1, and a feeding module 2 and a testing module 3 disposed in the frame 1, an input/output port 11 matched with the feeding module 2 is arranged on the frame 1, the feeding module 2 comprises a bracket 21, a movable carrier plate module and a pressing module, the movable carrier plate module comprises a driving mechanism 22 and a circuit board carrier plate 23, the driving mechanism 22 drives the circuit board carrier plate 23 to make reciprocating linear motion under the input/output port 11 and the pressing module, the pressing module comprises a lower pressing cylinder 24 fixed on the bracket 21, a connecting plate 25 fixed at the movable end of the lower pressing cylinder 24 and a pressing plate 27 provided with a plurality of key through holes 26, the pressing plate 27 is fixedly matched on the connecting plate 25, and the test module 3 is positioned right above the compression module.

In this embodiment, the pressure plate is fixedly fitted to the connecting plate by bolts.

In this embodiment, the plurality of key through holes 26 on the pressing plate 27 correspond to the key positions of the circuit board to be tested one by one.

In this embodiment, the driving mechanism 22 is a telescopic cylinder.

In this embodiment, the test module 3 includes a longitudinal motion mechanism 301 and a knocking mechanism, the longitudinal motion mechanism 301 drives the knocking mechanism to make a reciprocating linear motion along a vertical direction, the knocking mechanism includes a fixing frame 302 and a plurality of electromagnetic driving knocking assemblies fixed on the fixing frame 302, a knocking head 303 is arranged at the bottom of the electromagnetic driving knocking assemblies, the knocking head 303 penetrates through the fixing frame 302, and the plurality of electromagnetic driving knocking assemblies correspond to the plurality of key through holes 26 in a one-to-one manner.

In this embodiment, the longitudinal movement mechanism 301 includes mounting bracket, driving motor, with the lead screw that the driving motor output is connected, with the screw-nut of lead screw looks adaptation, fix slide rail on the mounting bracket, screw-nut with slide rail sliding fit, the mounting bracket with 1 fixed coordination of frame, driving motor fixes on the mounting bracket, mount 302 with screw-nut fixed coordination.

In this embodiment, the electromagnetic driving knocking component includes a tubular housing 304, a ferromagnetic body disposed at the bottom of the tubular housing 304, an electromagnet core 305 passing through the tubular housing 304 and the ferromagnetic body, and a counterweight sleeve 306 in sliding fit with the electromagnet core 305, wherein a limiting plate 307 is disposed at the upper end of the electromagnet core 305, a return spring 308 is sleeved on the electromagnet core 305, the return spring 308 is located between the limiting plate 307 and the tubular housing 304, a first stopping structure 309 is disposed at the lower end of the electromagnet core 305, a first sliding slot 310 in limiting fit with the first stopping structure 309 is disposed at the top of the counterweight sleeve 306, a coil is wound on the electromagnet core 305, and the knocking head 303 is in sliding fit with the lower end of the counterweight sleeve 306.

In this embodiment, the tubular housing 304 is fixedly connected to the fixing frame 302.

In this embodiment, the upper end of the striking head 303 is provided with a second stopping structure 311, the lower portion of the weight sleeve 306 is provided with a second sliding groove 312 in limit fit with the second stopping structure 311, the striking head 303 is sleeved with a buffer spring 313, the upper end of the buffer spring 313 contacts with the bottom of the weight sleeve 306 and is limited, and the lower end of the buffer spring 313 is fixedly fitted with the striking head 303.

In this embodiment, the rack 1 is further provided with a display 12, an operation panel 13, a warning light 14, a controller 15, and a heat sink 16.

In this embodiment, the circuit board testing key press further includes a code scanning gun 17 disposed at the input/output port 11.

In this embodiment, the fixing frame 302 is provided with a handle 314.

The utility model discloses a work flow:

the circuit board to be tested is placed on the circuit board carrier plate 23 by a worker, the code scanning gun 17 scans the circuit board to be tested for code recognition, the driving mechanism 22 drives the circuit board carrier plate 23 to move to the position below the pressing module, the pressing cylinder 24 retracts to drive the pressing plate 27 to press downwards, and the pressing plate 27 is matched with the circuit board carrier plate 23 to fix the circuit board to be tested.

At this time, the longitudinal movement mechanism 301 drives the fixing frame 302 to move downwards, and the knocking mechanism is started after the fixing frame reaches a specified position. When the electromagnetically driven knocking component is in an initial state as shown in fig. 6, the electromagnet core 305 is in an upper limit state under the elastic force of the return spring 308, when the coil is energized, a magnetic field is generated at the electromagnet core 305, an attractive force is generated between the electromagnet core 305 and the ferromagnetic body, the electromagnet core 305 cannot be moved due to the fixation of the ferromagnetic body and is forced to move downwards, the first stop structure 309 is disengaged from the weight sleeve 306 as shown in fig. 7, the weight sleeve 306 falls under the gravity after the limitation is removed as shown in fig. 8, and the knocking head 303 triggers a key position on a circuit board.

The utility model discloses be applied to the technical field of button test.

While the embodiments of the present invention have been described in terms of practical embodiments, they are not intended to limit the scope of the invention, and modifications of the embodiments and combinations with other embodiments will be apparent to those skilled in the art in light of the present description.

Claims

1. Circuit board test machine of typing, it includes frame (1), its characterized in that: the circuit board testing key machine further comprises a feeding module (2) and a testing module (3) which are arranged in the rack (1), wherein an input and output port (11) matched with the feeding module (2) is formed in the rack (1), the feeding module (2) comprises a support (21), a movable carrier plate module and a pressing module, the movable carrier plate module comprises a driving mechanism (22) and a circuit board carrier plate (23), the driving mechanism (22) drives the circuit board carrier plate (23) to do reciprocating linear motion under the input and output port (11) and the pressing module, the pressing module comprises a pressing cylinder (24) fixed on the support (21), a connecting plate (25) fixed at the movable end of the pressing cylinder (24) and a pressing plate (27) provided with a plurality of key through holes (26), and the pressing plate (27) is fixedly matched on the connecting plate (25), the test module (3) is located right above the compression module.

2. The circuit board testing key press of claim 1, wherein: the test module (3) comprises a longitudinal motion mechanism (301) and a knocking mechanism, wherein the longitudinal motion mechanism (301) drives the knocking mechanism to do reciprocating linear motion along the vertical direction, the knocking mechanism comprises a fixing frame (302) and a plurality of electromagnetic drive knocking components fixed on the fixing frame (302), knocking heads (303) are arranged at the bottoms of the electromagnetic drive knocking components, the knocking heads (303) penetrate through the fixing frame (302), and the electromagnetic drive knocking components correspond to the key through holes (26) in a one-to-one mode.

3. The circuit board testing key printer of claim 2, wherein: the electromagnetic driving knocking assembly comprises a tubular shell (304), a ferromagnetic body arranged at the bottom of the tubular shell (304), an electromagnet core (305) penetrating through the tubular shell (304) and the ferromagnetic body, and a counterweight sleeve (306) in sliding fit with the electromagnet core (305), the upper end of the electromagnet core (305) is provided with a limiting sheet (307), the electromagnet core (305) is sleeved with a return spring (308), the return spring (308) is positioned between the limiting sheet (307) and the tubular shell (304), the lower end of the electromagnet iron core (305) is provided with a first stop structure (309), the top of the counterweight sleeve (306) is provided with a first sliding chute (310) which is in limit fit with the first stop structure (309), the electromagnet core (305) is wound with a coil, and the knocking head (303) is in sliding fit with the lower end of the counterweight sleeve (306).

4. The circuit board testing key printer of claim 3, wherein: the upper end of the knocking head (303) is provided with a second stopping structure (311), the lower part of the counterweight sleeve (306) is provided with a second sliding groove (312) in limit fit with the second stopping structure (311), the knocking head (303) is sleeved with a buffer spring (313), the upper end of the buffer spring (313) is in contact with and limited by the bottom of the counterweight sleeve (306), and the lower end of the buffer spring (313) is fixedly matched with the knocking head (303).

5. The circuit board testing key press of claim 1, wherein: the plurality of key through holes (26) on the pressing plate (27) correspond to the key positions of the circuit board to be tested one by one.

6. The circuit board testing key press of claim 1, wherein: the rack (1) is also provided with a display (12), an operation panel (13), a warning lamp (14), a controller (15) and a heat dissipation device (16).

7. The circuit board testing key press of claim 1, wherein: the circuit board testing key machine further comprises a code scanning gun (17) arranged at the input and output port (11).

8. The circuit board testing key printer of claim 2, wherein: the fixed frame (302) is provided with a handle (314).