Screw locking tool for PCB installation

Abstract

The utility model relates to a screw locking tool for mounting a PCB (Printed Circuit Board), which comprises a base, at least one pressing device is arranged on the base, the pressing device is suitable for pressing and fixing the PCB and a bearing body on the top surface of the base, the screw locking tool further comprises a screw feeder, a screw blowing pipe of the screw feeder is connected with a screw counter in series, and the screw counter is connected with the screw feeder in series. The screw feeder, the pressing device and the screw counter are electrically connected with the controller. When the novel screw locking tool is used for fixedly connecting the PCB to the bearing body through the screws, the situation that the screws are missed to be locked is not prone to occurring.

Description

TECHNICAL FIELD

[0001] The utility model relates to lock screw frock technical field, concretely relates to a lock screw frock for PCB board installation. BACKGROUND

[0002] Liquid crystal display module includes PCB board and carrier, when producing and assembling, need manual screwdriver through screw and fix and connect PCB board on carrier, carrier is back light board or support, manual lock screw is easy to appear the situation of missing lock, therefore, after manual screwdriver through screw and fix and connect PCB board on carrier, need through optical detection equipment and detect whether the screw connection quantity between PCB board and carrier is correct, the cost of optical detection equipment is high, and still easy to appear the situation of wrong detection result. SUMMARY

[0003] The utility model wants to solve the technical problem to provide a lock screw frock for PCB board installation, use the lock screw frock and fix and connect PCB board through screw on carrier, and it is not easy to appear the situation of missing lock screw.

[0004] In order to solve the above technical problem, the utility model provides a lock screw frock for PCB board installation, including base, be equipped with at least one pressing device on the base, the pressing device is suitable for the PCB board and carrier and press tightly fixed on the top surface of base, still include screw feeder, the screw feeder is connected in series with screw counter on the blow nail pipe of screw feeder, screw feeder, pressing device and screw counter are connected with controller respectively.

[0005] Further preferably, the controller is a PLC, a single-chip microcomputer, or a microcomputer.

[0006] Further preferably, the screw counter is provided with a digital display screen. The user can easily understand the number of screws supplied by the screw feeder through the digital display screen.

[0007] Further preferably, the pressing device comprises a bottom plate arranged on the top surface of the base, a metal core arranged at the top end of the bottom plate, a solenoid coil sleeved on the metal core, a cylinder arranged on the bottom plate and sleeved on the outer side of the solenoid coil, a guide rod slidingly fitted in the cylinder and arranged above the metal core, a top plate arranged at the top end of the guide rod and above the cylinder, a fixing ring sleeved on the outer side of the cylinder, a spring sleeved on the outer side of the cylinder and arranged between the top plate and the fixing ring, a plurality of guide holes arranged in the top plate and distributed in the circumferential direction, a shoulder guide column slidingly fitted in the guide holes and arranged above the top plate, the bottom of the shoulder guide column being fixed on the fixing ring, and a pressing rod vertically arranged on one side of the top plate; in operation, the energization and de-energization of the solenoid coil can be controlled by the controller, when the solenoid coil is energized, a dense magnetic field is generated at the top of the metal core according to the principle of current magnetic effect, the guide rod moves downward and is adsorbed on the top of the metal core under the action of the dense magnetic field, at this time, the spring is in a compressed state, and the guide rod drives the pressing rod to move downward and complete the pressing action at the same time; when the solenoid coil is de-energized, the dense magnetic field generated at the top of the metal core disappears, the guide rod moves upward under the action of the elastic restoring force of the spring, and the guide rod drives the pressing rod to move upward and complete the releasing action at the same time.

[0008] Further preferably, a magnet is embedded on the bottom surface of the bottom plate, and the bottom plate is fixed on the base by magnetic attraction; the bottom plate can be fixed on any position on the top surface of the base by magnetic attraction, so that the pressing device can press and fix PCB boards and carriers of different sizes on the top surface of the base.

[0009] Further preferably, a silica gel pad is arranged on the bottom surface of the pressing rod, and a plurality of hemispherical protrusions are arranged on the bottom surface of the silica gel pad; when the pressing rod moves downward, the silica gel pad is pressed on the PCB board, and since the plurality of hemispherical protrusions are arranged on the bottom surface of the silica gel pad, the PCB board and the carrier can be effectively prevented from moving after being pressed, and the surface of the PCB board can also be prevented from being scratched.

[0010] The utility model discloses a locking screw tool, which comprises a base, a pressing device arranged on the top surface of the base, a carrier arranged on the top surface of the base, a PCB board arranged on the carrier, a screw feeder arranged on one side of the base, a screw counter arranged on the base and connected with the screw feeder, a controller arranged on the base and connected with the screw feeder and the screw counter, and a locking screw tool arranged on the base and connected with the controller. Attached Figure Description

[0011] To clearly illustrate the innovative principle of this utility model and its advantages over existing screw-locking tools, possible embodiments are described below with the aid of accompanying drawings through non-limiting examples applying the stated principle. In the drawings:

[0012] Figure 1 This is the front view of the screw-locking fixture of this utility model;

[0013] Figure 2 for Figure 1 Top view;

[0014] Figure 3 This is a perspective view of the clamping device;

[0015] Figure 4 for Figure 3 The main view;

[0016] Figure 5 for Figure 4 Sectional view at AA;

[0017] Figure 6 This is a three-dimensional view of the silicone pad. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this new embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixation," etc., should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example

[0022] As Figures 1-6 The utility model provides a lock screw frock for PCB board installation, including base 1, at least one pressing device 2 is equipped on the base 1, the pressing device 2 is suitable for the PCB board 3 and the carrier 4 are pressed and fixed on the top surface of base 1, still include screw feeder, the blow nail pipe 5 of screw feeder is connected with screw counter 6 in series, and screw feeder, pressing device 2 and screw counter 6 are electrically connected with controller respectively.

[0023] Preferably, the controller is PLC, single-chip microcomputer or microcomputer.

[0024] Preferably, the screw counter 6 is provided with a digital display screen 7; the user can conveniently understand the screw supply quantity of the screw feeder through the digital display screen 7.

[0025] Preferably, the pressing device 2 includes a bottom plate 9 provided on the top surface of the base 1, a metal core 10 provided at the top end of the bottom plate 9, a solenoid 11 sleeved on the metal core 10, a cylinder 12 provided on the bottom plate 9 and sleeved on the outer side of the solenoid 11, a guide rod 13 slidingly fitted in the cylinder 12 and located above the metal core 10, a top plate 14 provided at the top end of the guide rod 13 and located above the cylinder 12, a fixing ring 15 sleeved on the outer side of the cylinder 12, a spring 16 sleeved on the outer side of the cylinder 12 and located between the top plate 14 and the fixing ring 15, a plurality of guide holes 17 circumferentially distributed and formed in the top plate 14, a shoulder guide column 18 slidingly fitted in the guide holes 17, a shoulder 19 of the shoulder guide column 18 located above the top plate 14, the bottom of the shoulder guide column 18 fixed on the fixing ring 15, and a pressing rod 20 vertically provided on one side of the top plate 14; in operation, the energization and de-energization of the solenoid 11 can be controlled by the controller; when the solenoid 11 is energized, a dense magnetic field is generated at the top of the metal core 10 according to the principle of current magnetic effect; under the action of the dense magnetic field, the guide rod 13 moves downward and is adsorbed on the top of the metal core 10; at this time, the spring 16 is in a compressed state; when the guide rod 13 moves downward, the pressing rod 20 also moves downward and completes a pressing action; when the solenoid 11 is de-energized, the dense magnetic field generated at the top of the metal core 10 disappears; under the action of the elastic restoring force of the spring 16, the guide rod 13 moves upward; at the same time, the guide rod 13 drives the pressing rod 20 to move upward and completes a releasing action.

[0026] Preferably, a magnet is embedded on the bottom surface of the bottom plate 9; the bottom plate 9 is magnetically fixed on the top surface of the base 1 by the magnet; the bottom plate 9 can be magnetically fixed on any position on the top surface of the base 1 by the magnet; therefore, the pressing device 2 can press and fix PCB boards 3 and carriers 4 of different sizes on the top surface of the base 1.

[0027] Preferably, the bottom surface of the pressing rod 20 is provided with a silica gel pad 21, and the bottom surface of the silica gel pad 21 is provided with a plurality of spaced half-spherical protrusions 22; when the pressing rod 20 moves downward, the silica gel pad 21 is pressed on the PCB board 3, and since the bottom surface of the silica gel pad 21 is provided with a plurality of spaced half-spherical protrusions 22, the PCB board 3 and the carrier 4 can be effectively prevented from moving after being pressed, and the surface of the PCB board 3 can also be prevented from being scratched.

[0028] In use, the PCB board 3 and the carrier 4 are stacked and placed on the base 1, the PCB board 3 is located above the carrier 4, the controller is manually controlled to control the pressing device 2 to press and fix the PCB board 3 and the carrier 4 on the top surface of the base 1, the controller automatically controls the screw feeder to supply screws one by one, the screw counter 6 is used to count the total number of supplied screws, the screwdriver 8 is manually used to fix and connect the PCB board 3 to the carrier 4 through the supplied screws, when the total number of screws counted by the screw counter 6 reaches the designed number of screws required for connecting the PCB board 3 and the carrier 4, the screw counter 6 sends an electric signal to the controller, the controller automatically controls the pressing device 2 to loosen the PCB board 3 and the carrier 4, and at this time, the PCB board 3 and the carrier 4 can be taken out from the base 1 together; therefore, the screw locking tool of the embodiment can be used to fix and connect the PCB board to the carrier through screws, and the situation of missing screws is less likely to occur.

[0029] The above is the preferred embodiment of the utility model, and it should be noted that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the utility model, and these improvements and refinements should also be considered as the protection scope of the utility model.

Claims

1. A screw locking tool for mounting a PCB board, characterized by: The application relates to a screw feeding device, which comprises a base (1) provided with at least one pressing device (2) suitable for pressing and fixing a PCB (3) and a carrier (4) on the top surface of the base (1), and a screw feeder, wherein a blow pin tube (5) of the screw feeder is connected with a screw counter (6) in series, and the screw feeder, the pressing device (2) and the screw counter (6) are electrically connected with a controller respectively.

2. The screw locking tool of claim 1, wherein: The screw counter (6) is provided with a digital display screen (7).

3. The screw locking tool of claim 2, wherein: The pressing device (2) comprises a bottom plate (9) arranged on the top surface of the base (1), a metal core (10) arranged at the top end of the bottom plate (9), a solenoid (11) sleeved on the metal core (10), a cylinder (12) arranged on the outer side of the solenoid (11), a guide rod (13) slidingly matched with the cylinder (12) and arranged above the metal core (10), a top plate (14) arranged at the top end of the guide rod (13) and above the cylinder (12), a fixing ring (15) sleeved on the outer side of the cylinder (12), a spring (16) sleeved on the outer side of the cylinder (12) and arranged between the top plate (14) and the fixing ring (15), a plurality of guide holes (17) arranged in the circumferential direction and formed in the top plate (14), shoulder guide columns (18) slidingly matched with the guide holes (17), shoulder portions (19) of the shoulder guide columns (18) arranged above the top plate (14), bottom portions of the shoulder guide columns (18) fixed on the fixing ring (15) and a pressing rod (20) vertically arranged on one side of the top plate (14).

4. The screw locking tool of claim 3, wherein: The bottom surface of the bottom plate (9) is embedded with a magnet, and the bottom plate (9) is fixed on the base (1) by magnetic attraction.

5. The screw locking tool of claim 3, wherein: The bottom surface of the pressing rod (20) is provided with a silica gel pad (21), and the bottom surface of the silica gel pad (21) is provided with a plurality of interval arranged hemispherical protrusions (22).

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