CN216248245U

CN216248245U - Keyboard circuit film semi-manufactured goods electricity measuring equipment

Info

Publication number: CN216248245U
Application number: CN202122782688.1U
Authority: CN
Inventors: 孔令海; 刘超; 张亮; 龙勇
Original assignee: Guangdong Fangzhou Zhizao Technology Co ltd
Current assignee: Guangdong Fangzhou Zhizao Technology Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-04-08
Anticipated expiration: 2031-11-12

Abstract

The utility model relates to a keyboard circuit film production technical field discloses a keyboard circuit film semi-manufactured goods electricity measuring equipment, comprises a workbench, the both ends of workstation all are provided with the coil stock subassembly, and one of them coil stock subassembly is used for the rolling film, and another is used for unreeling the film, still be provided with the detection device who is used for detecting film surface printed circuit break-make situation on the workstation, detection device is including setting up the electricity head on the workstation, setting up the control box in electricity head top, electricity head is connected with the control box electricity, the bottom surface of control box still is provided with and is used for ordering about the pressfitting piece of electricity head pressfitting on film printed circuit, reduces invalid production action in the production process through above scheme, ensures the yield.

Description

Keyboard circuit film semi-manufactured goods electricity measuring equipment

Technical Field

The application relates to the technical field of keyboard circuit film production, in particular to an electrical measurement device for a keyboard circuit film semi-finished product.

Background

The keyboard circuit film is an example of the category of the film switch, and the film switch with more keys and orderly arranged is commonly called as a film keyboard. The circuit board consists of four parts, including a panel, an upper circuit, an isolating layer and a lower circuit.

In the process of producing the keyboard circuit film by the existing manufacturers, due to the innovation of product technology and the requirement of keyboard functionality, circuits to be printed on the keyboard circuit film are denser than the circuits printed on the keyboard circuit film, and due to the fact that the circuit density is high, in order to guarantee good electrical characteristics, a bridge circuit needs to be printed on an existing base layer, and therefore the density of the printed circuits is further increased.

The original production flow usually tests the whole product after the whole keyboard circuit film is produced, but after long-time production, the phenomenon of non-conduction of the circuit is easy to occur due to the fact that the printed circuit density of the keyboard film is too high. When the whole finished keyboard film is completely produced and then is detected, the finished product rate with good quality slides down, and serious production loss is caused.

Disclosure of Invention

In order to reduce the production loss, reduce invalid production action in the production process, guarantee the yield, the application provides an electrical measuring equipment of keyboard circuit film semi-manufactured goods.

The application provides a keyboard circuit film semi-manufactured goods electricity measuring equipment adopts following technical scheme:

the utility model provides a keyboard circuit film semi-manufactured goods electricity measuring equipment, includes the workstation, the both ends of workstation all are provided with the coil stock subassembly, and one of them coil stock subassembly is used for the rolling film, and another is used for unreeling the film, still be provided with the detection device who is used for detecting film surface printed circuit break-make situation on the workstation, detection device is including setting up the electricity head on the workstation, setting up the control box in electricity head top, electricity head is connected with the control box electricity, the bottom surface of control box still is provided with and is used for ordering about the pressfitting piece of electricity head pressfitting on film printed circuit.

Through adopting above-mentioned technical scheme, unreel the semi-manufactured goods film of lapping in advance through one of them coil stock subassembly, thereby make the film printing have one side of circuit to set up, move to the below of electricity probe when the one side that has the circuit when the printing, be provided with the industry probe on the electricity probe, mainly used formation of image is tracked, when discerning the edge and the local range of circuit on the film, microcomputer control pressing member in the control box makes the electricity probe push down this moment, and the circular telegram carries out the circuit break-make and detects, to qualified product, can show on the display screen and pass through the sign, can mark and follow-up cutting the rework to the circuit on the film to unqualified product electricity probe.

Optionally, both ends below of control box all can be dismantled and be connected with the supporting seat, the supporting seat slides at the lateral wall of workstation, the fixed linear electric motor that is provided with on the lateral wall of workstation, supporting seat and linear electric motor's slider fixed connection, linear electric motor is connected with the control box electricity.

Through adopting above-mentioned technical scheme for the film is at the in-process that removes, and whole control box synchronous movement under linear electric motor's effect, and linear electric motor's slider slip speed is the same with the speed of unreeling of film, thereby makes detection circuitry's in-process, and the film need not stop to unreel and detects, has promoted detection efficiency.

Optionally, set up two guide pieces that are the symmetry and set up on the one end upper surface of workstation, two the guide piece is located the workstation both sides respectively, the guide piece includes the mounting panel, rotates first guide pulley, the eccentric second guide pulley of rotating on the mounting panel of connection on the mounting panel, the second guide pulley is located the top of first guide pulley, the lateral wall laminating of second guide pulley lateral wall of first guide pulley.

Through adopting above-mentioned technical scheme, pass between first guide pulley and the second guide pulley with the free end of film, because the second guide pulley is located the top of first guide pulley, and the eccentric rotation of second guide pulley sets up to make the film be difficult to appear the phenomenon of contracting at unreeling the in-process.

Optionally, a sliding hole is formed in the upper surfaces of the two sides of the workbench, a reciprocating lead screw is connected to the sliding hole in a rotating mode, a traction block matched with the reciprocating lead screw for use slides in the sliding hole, the mounting plate is fixed to the corresponding traction block, and a driving assembly used for driving the reciprocating lead screw to rotate is further arranged on the workbench.

Through adopting above-mentioned technical scheme, through drive assembly for reciprocal lead screw rotates, thereby traction block and mounting panel slide along the length direction of workstation, realize the tractive to the film.

Optionally, the driving assembly includes a traction motor fixed on the side wall of the workbench, a worm coaxially fixed on a rotating shaft of the traction motor, and a worm wheel coaxially fixed on the end of the reciprocating lead screw, and the worm is meshed with the worm wheel.

Through adopting above-mentioned technical scheme, rotate through the pivot of ordering about traction motor for worm meshing worm wheel rotates, under the effect of linkage spare, makes worm wheel and reciprocal lead screw synchronous rotation, realizes sliding of guide.

Optionally, a dust cover for covering the worm and the worm wheel is fixed to the side wall of the workbench.

Through adopting above-mentioned technical scheme, the dust cover makes external dust be difficult to pile up in the outside of worm and worm wheel, has ensured worm gear drive's stability.

Optionally, the coil stock subassembly is including rotating the wind-up roll of connecting at the workstation tip, fixing servo motor on the workstation lateral wall, the pivot coaxial fixation of wind-up roll is in servo motor's pivot.

Through adopting above-mentioned technical scheme, the wind-up roll is the inflatable axle, orders about servo motor's pivot and rotates to make the wind-up roll synchronous rotation, realize the rolling of film and unreel.

Optionally, the pressing piece is an electric pushing cylinder, a base of the electric pushing cylinder is fixed to the bottom of the control box, and a piston rod of the electric pushing cylinder is fixed to the side wall of the electric probe.

Through adopting above-mentioned technical scheme, the piston rod of the steerable electric push cylinder of microcomputer control ware in the control box stretches out and draws back to realize the upper and lower slip of control electricity probe.

In summary, the present application includes at least one of the following beneficial technical effects:

1. in the semi-finished product stage, the keyboard circuit film semi-finished product detection equipment is used for electrical measurement, so that the production loss is reduced, the invalid production action in the production process is reduced, and the yield is guaranteed.

2. Through setting up linear electric motor for the film is at the in-process that removes, and whole control box synchronous movement under linear electric motor's effect, and linear electric motor's slider slip speed is the same with the speed of unreeling of film, thereby makes detection circuitry's in-process, and the film need not stop to unreel and detects, has promoted detection efficiency.

3. Set up first guide pulley and second guide pulley, the electricity is surveyed the in-process, and keyboard circuit's film is difficult to take place to shrink, has ensured the electricity and has surveyed the performance, has promoted the accuracy of electricity survey.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the electrical apparatus in this embodiment.

Fig. 2 is a schematic view of the overall structure of the detection apparatus in this embodiment.

Fig. 3 is a partially enlarged view of a portion a in fig. 1.

Fig. 4 is a schematic view of a part of the structure of the worktable of the embodiment, which is mainly used for showing the sliding hole.

Fig. 5 is a partially enlarged view at B in fig. 4.

Reference numerals: 1. a work table; 2. a coil assembly; 3. a detection device; 4. an electrical probe; 5. a control box; 6. a supporting seat; 7. a linear motor; 8. a guide member; 9. mounting a plate; 10. a first guide wheel; 11. a second guide wheel; 12. a sliding hole; 13. a reciprocating screw; 14. a traction block; 15. a drive assembly; 16. a traction motor; 17. a worm; 18. a worm gear; 19. a dust cover; 20. a wind-up roll; 21. a servo motor; 22. and (4) electrically pushing the cylinder.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses keyboard circuit film semi-manufactured goods electricity measuring equipment.

Referring to fig. 1, an electrical measurement device for a keyboard circuit film semi-finished product comprises a workbench 1, wherein the workbench 1 is horizontally arranged, coil assemblies 2 are arranged at two ends of the workbench 1, the coil assembly 2 at one end is used for unwinding a film, and the coil assembly 2 at the other end is used for winding the film. The workbench 1 is also provided with a detection device 3 for detecting the on-off state of the surface circuit of the film, and the detection device 3 is positioned between the two coil stock assemblies 2.

Referring to fig. 2, the detecting device 3 includes an electrical probe 4 and a control box 5, a pressing piece used for driving the electrical probe 4 to press down on the thin film circuit is further arranged between the control box 5 and the electrical probe 4, the pressing piece is an electrical pushing cylinder 22, a base of the electrical pushing cylinder 22 is fixed at the bottom of the control box 5, a piston rod of the electrical pushing cylinder 22 is fixed at the outer side of the electrical probe 4, when it is recognized that one side printed with a circuit is located right below the electrical probe 4, the control box 5 drives the piston rod of the electrical pushing cylinder 22 to vertically extend downwards, and the electrical probe 4 is pressed on the thin film circuit for on-off testing.

Referring to fig. 2, the electric probe 4 is a high-power rubber plate, the surface of the high-power rubber plate is inserted through and provided with a plurality of probes, the probes are distributed according to the design of a thin film circuit, the upper ends of the probes are electrically connected with a microcomputer controller in the control box 5 through leads, an industrial probe is further arranged on the high-power rubber plate and is an industrial camera, the industrial probe is connected with the microcomputer controller in the control box 5, when a circuit on the thin film moves to the position under the electric probe 4, the industrial camera takes a picture to perform positioning tracking, and at the moment, the microcomputer processor in the control box 5 drives the electric pushing cylinder 22 to push the electric probe 4 to vertically press downwards until the press is pressed on the thin film circuit.

Referring to fig. 2, in the electrical measurement process, the lower end of the probe is contacted with the key electrode on the thin film circuit, the high-power rubber plate is also provided with a receiving end contacted with the bus bar end of the thin film circuit, and the receiving end is a metal block and is electrically connected with a microcomputer in the control box 5 through a lead. When the probes and the receiving ends are in contact at the corresponding positions of the thin film circuit, the microcomputer controller in the control box 5 emits electric signals to test whether the probes can receive the electric signals or not, products are qualified if all the probes can receive the electric signals, and defective products are marked if at least one probe cannot receive the signals.

Referring to fig. 1, linear motor 7 is fixed on both sides of workbench 1, linear motor 7 is electrically connected with the microcomputer controller in control box 5, and the bottom of both ends of control box 5 are connected with supporting seat 6 through the bolt is all dismantled, and supporting seat 6 is fixed on linear motor 7's slider to when detecting the film circuit break-make situation, make whole electric probe 4 move on workbench 1, and keep relative stillness between and the film. Therefore, the film circuit can be detected without stopping unwinding, and the detection efficiency is improved.

Referring to fig. 1, the coil stock assembly 2 comprises a winding roller 20 and a servo motor 21, the winding roller 20 is rotatably connected to the end of the workbench 1, the servo motor 21 is fixed on the side wall of the workbench 1, the rotating shaft of the servo motor 21 is coaxially and fixedly connected with the rotating shaft of the winding roller 20, and the servo motor 21 is electrically connected with a microcomputer controller in the control box 5.

Referring to fig. 3 and 4, a guide 8 is disposed on the upper surface of the table 1, two guides 8 disposed on the upper surface of the table 1 are disposed on both sides of the table 1, respectively, and the guides 8 disposed on both sides of the table 1 are symmetrically disposed. The guide member 8 comprises a mounting plate 9, a first guide wheel 10 and a second guide wheel 11, the mounting plate 9 slides on the workbench 1 along the length direction of the workbench 1, the second guide wheel 11 is located above the first guide wheel 10, the first guide wheel 10 is rotatably connected to the mounting plate 9, the second guide wheel 11 eccentrically rotates on the mounting plate 9, and in an initial state, the side wall of the second guide wheel 11 is overlapped outside the first guide wheel 10.

Referring to fig. 4, sliding holes 12 for sliding of the mounting plate 9 are formed in the upper surfaces of the two sides of the workbench 1, reciprocating lead screws 13 are rotatably connected in the sliding holes 12, a traction block 14 slides in the sliding holes 12 along the length direction of the workbench 1, and the mounting plate 9 is fixedly connected with the traction block 14.

Referring to fig. 4 and 5, a driving assembly 15 for driving the reciprocating screw 13 to rotate is further arranged on the workbench 1, the driving assembly 15 comprises a worm 17, a worm wheel 18 and a traction motor 16, the traction motor 16 is fixed on the side wall of the mounting table, the worm 17 is coaxially fixed on a rotating shaft of the traction motor 16, the worm wheel 18 is rotatably connected to the workbench 1, and the worm 17 is meshed with the worm wheel 18. The side wall of the workbench 1 is also fixedly connected with a dust cover 19, and the worm 17 and the worm wheel 18 are both positioned in the inner cavity of the dust cover 19.

The application of the electrical measuring equipment for the keyboard circuit film semi-finished product adopts the following implementation principle: in the detection process, the film is unreeled through the unreeled reeling roller 20, the free end of the film is clamped between the first guide wheel 10 and the second guide wheel 11, and the reeling roller 20 for unreeling and the rotating shaft of the traction motor 16 are driven to synchronously rotate, so that the free end of the film is pulled and moved along the length direction of the workbench 1. When the electric probe 4 detects that the circuit printed on the film is positioned below the electric probe 4, the control box 5 drives the electric probe 4 to press down for detection, and the whole control box 5 and the film are kept relatively static in the detection process, so that the detection of the film is not stopped.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a keyboard circuit film semi-manufactured goods electricity measuring equipment which characterized in that: including workstation (1), the both ends of workstation (1) all are provided with coil stock subassembly (2), and one of them coil stock subassembly (2) are used for the rolling film, and another is used for unreeling the film, still be provided with detection device (3) that are used for detecting film surface printed circuit break-make situation on workstation (1), detection device (3) are including setting up electric probe (4) on workstation (1), setting control box (5) in electric probe (4) top, electric probe (4) are connected with control box (5) electricity, the bottom surface of control box (5) still is provided with and is used for ordering about the pressfitting piece of electric probe (4) pressfitting on film printed circuit.

2. The apparatus for electrical measurement of keyboard circuit film semi-finished product as claimed in claim 1, wherein: the supporting seat (6) is detachably connected to the lower portions of the two ends of the control box (5), the supporting seat (6) slides on the side wall of the workbench (1), the linear motor (7) is fixedly arranged on the side wall of the workbench (1), the supporting seat (6) is fixedly connected with a sliding block of the linear motor (7), and the linear motor (7) is electrically connected with the control box (5).

3. The apparatus for electrical measurement of keyboard circuit film semi-finished product as claimed in claim 1, wherein: set up two guide spare (8) that are the symmetry and set up on the one end upper surface of workstation (1), two guide spare (8) are located workstation (1) both sides respectively, guide spare (8) include mounting panel (9), rotate first guide pulley (10), the eccentric second guide pulley (11) of rotating on mounting panel (9) of connection on mounting panel (9), second guide pulley (11) are located the top of first guide pulley (10), the lateral wall of the first guide pulley of lateral wall laminating (10) of second guide pulley (11).

4. A keyboard circuit film semi-finished product electrical measuring apparatus according to claim 3, wherein: the utility model discloses a reciprocating screw rod (13) of working table, including workstation (1), slide hole (12) has been seted up on the both sides upper surface of workstation (1), slide hole (12) internal rotation is connected with reciprocal lead screw (13), slide hole (12) internal slip have with reciprocal lead screw (13) cooperation traction block (14) of using, mounting panel (9) are fixed on corresponding traction block (14), still be provided with on workstation (1) and be used for driving about reciprocal lead screw (13) pivoted drive assembly (15).

5. The apparatus for electrical measurement of keyboard circuit film semi-finished product as claimed in claim 4, wherein: the driving assembly (15) comprises a traction motor (16) fixed on the side wall of the workbench (1), a worm (17) coaxially fixed on a rotating shaft of the traction motor (16), and a worm wheel (18) coaxially fixed at the end part of the reciprocating lead screw (13), wherein the worm (17) is meshed with the worm wheel (18).

6. The apparatus for electrical measurement of keyboard circuit film semi-finished product as claimed in claim 5, wherein: and a dust cover (19) for covering the worm (17) and the worm wheel (18) is fixed on the side wall of the workbench (1).

7. The apparatus for electrical measurement of keyboard circuit film semi-finished product as claimed in claim 1, wherein: coil stock subassembly (2) including rotate wind-up roll (20), fix servo motor (21) on workstation (1) lateral wall of connection at workstation (1) tip, the coaxial fixing in servo motor (21) of pivot of wind-up roll (20) is in the pivot.

8. The apparatus for electrical measurement of keyboard circuit film semi-finished product as claimed in claim 1, wherein: the pressing piece is an electric pushing cylinder (22), the base of the electric pushing cylinder (22) is fixed at the bottom of the control box (5), and the piston rod of the electric pushing cylinder (22) is fixed on the side wall of the electric probe (4).