Screw locking mechanism

Abstract

The utility model relates to the technical field of screw locking, in particular to a screw locking mechanism. The device comprises a vertical base plate, a driving motor, an electric screwdriver and a screw clamping nozzle. The upper end of the vertical base plate is connected with a lifting mechanism, the lifting mechanism is connected with a driving motor, the driving motor is connected with an electric screwdriver through a transmission unit, and one end of the electric screwdriver extends into the screw clamping nozzle; the electric screwdriver further comprises a detection structure used for detecting coverage, the detection structure comprises an induction piece connected with the electric screwdriver, an inductor used for inducting the position of the induction piece and an alarm unit, and the inductor is electrically connected with the alarm unit. When the electric screwdriver floats, the inductor sends a signal to the alarm unit, and the alarm unit gives an alarm. According to the electric screwdriver, the induction piece is arranged on the electric screwdriver, meanwhile, the inductor and the alarm unit are arranged, an alarm is given when the electric screwdriver floats high, and the yield is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of locking screws, in particular to a locking screw mechanism. Background Art

[0002] With the continuous development of automation, the current process of screwing electronic products also uses unmanned locking screw machines. During the working process, the screws enter the screw clamps of the locking screw machine through the screw feeder, and the electric screwdriver of the locking mechanism abuts against the screws and drives the screws to rotate. One end of the screw is connected to the product thread and continuously screwed in. During the working process, due to various reasons, the screws may not be in close contact with the product, resulting in the phenomenon of screw floating, resulting in a low yield rate. In the later quality inspection, manual processing is still required, which increases the production cost. Summary of the invention

[0003] The utility model aims to provide a screw locking mechanism to address the deficiencies of the prior art. The screw locking mechanism can give an alarm when the screw floats, and then eliminate the float through manual assistance to avoid the float in subsequent processing.

[0004] A screw locking mechanism comprises: a vertical base plate, a driving motor, an electric screwdriver and a screw clamp; the upper end of the vertical base plate is connected with a lifting mechanism, the lifting mechanism is connected to the driving motor, the driving motor is connected to the electric screwdriver through a transmission unit, and one end of the electric screwdriver extends into the screw clamp;

[0005] It also includes a detection structure for detecting coverage, the detection structure includes a sensing sheet connected to the electric screwdriver, a sensor for sensing the position of the sensing sheet, and an alarm unit, the sensor is electrically connected to the alarm unit; when the electric screwdriver floats, the sensor sends a signal to the alarm unit, and the alarm unit alarms.

[0006] Furthermore, the vertical base plate is provided with a plurality of vertical guide rails, the upper end of the vertical guide rails is connected to an upper slider, the upper slider is connected to a motor seat, the motor seat is connected to the motor, and the upper end of the vertical base plate is connected to a supporting plate, and the lifting mechanism includes an upper cylinder fixed to the supporting plate, and the upper cylinder is connected to the motor seat.

[0007] Furthermore, the lower end of the vertical guide rail is connected to a lower slider, the lower slider is connected to a connecting plate, the lower end of the connecting plate is connected to a connecting block, the connecting block is fixedly connected to a screw clamp, and the connecting plate is provided with a fixing structure connected to the vertical base plate.

[0008] Preferably, the fixing structure includes: a connecting plate is provided with a plurality of connecting holes, a vertical base plate is provided with connecting grooves corresponding to the connecting holes, and bolts are passed through the connecting holes and the connecting grooves to fix the vertical base plate to the connecting plate. Of course, the fixing structure can also be other structures.

[0009] Furthermore, a middle slider is connected to the middle part of the guide rail, the middle slider is connected to an intermediate seat, a position adjustment structure is provided between the intermediate seat and the vertical base plate, the front end surface of the intermediate seat is connected to an orientation block, an orientation groove is provided in the middle part of the orientation block, the upper end of the electric screwdriver is connected to a fixed sleeve, the fixed sleeve is sleeved with the orientation groove and can move up and down relative to the orientation groove, the upper end of the fixed sleeve extends out of the fixed sleeve and is connected to the drive motor through an intermediate rod, and the two ends of the intermediate rod are respectively connected to the drive motor shaft and the fixed sleeve through universal joints.

[0010] Furthermore, the position adjustment structure includes a protrusion arranged on the side of the middle seat, an upper adjustment block is provided at the upper end of the vertical substrate, the upper adjustment block and the protrusion are both provided with coaxial vertical shaft holes, an adjustment rod is connected between the upper adjustment block and the protrusion, and the adjustment rod is respectively connected to the upper adjustment block and the protrusion through the vertical shaft hole.

[0011] Furthermore, a connecting hole is provided on the side of the orienting block and is connected to a vertical piece, an adjusting groove matching the connecting hole is provided at the upper end of the vertical piece, and the sensor is connected to the lower end of the vertical piece.

[0012] Beneficial effects of the utility model: the utility model arranges a sensing sheet on the electric screwdriver, and simultaneously arranges a sensor and an alarm unit, so that an alarm is triggered and timely adjustments are made when floating height occurs, thereby improving the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A structural diagram of the present embodiment.

[0014] Figure 2 for Figure 1 A schematic diagram of an enlarged structure at A in the middle.

[0015] Figure 3 This is a schematic diagram of removing the detection structure in this embodiment.

[0016] Reference numerals include:

[0017] 1 - upper cylinder; 2 - bearing plate; 3 - motor seat; 4 - upper slider; 5 - driving motor; 6 - vertical base plate; 7 - universal joint; 8 - vertical guide rail; 9 - middle rod; 10 - middle slider; 11 - middle seat; 12 - orientation block; 13 - orientation slot; 14 - induction sheet; 15 - lower slider; 16 - connecting block; 17 - screw clamp; 18 - electric screwdriver; 19 - adjusting rod; 20 - bump; 21 - adjusting slot; 22 - vertical sheet; 23 - inductor; 24 - connecting plate; 25 - fixing sleeve. Implementation

[0018] The utility model is described in detail below with reference to the accompanying drawings. Figures 1 to 3 shown.

[0019] Example: See Figures 1 to 3 A screw locking mechanism includes: a vertical base plate 6, a driving motor 5, an electric screwdriver 18 and a screw clamp 17; the upper end of the vertical base plate 6 is connected with a lifting mechanism, the lifting mechanism is connected to the driving motor 5, the driving motor 5 is connected to the electric screwdriver 18 through a transmission unit, and one end of the electric screwdriver 18 extends into the screw clamp 17;

[0020] It also includes a detection structure for detecting coverage, which includes a sensing sheet 14 connected to the electric screwdriver 18, a sensor 23 for sensing the position of the sensing sheet 14, and an alarm unit (not shown in the figure), and the sensor 23 is electrically connected to the alarm unit; when the electric screwdriver 18 floats, the sensor 23 sends a signal to the alarm unit, and the alarm unit alarms.

[0021] This technical solution improves the traditional screw locking mechanism, and sets a sensor sheet 14 on the electric screwdriver 18; in normal operation, the electric screwdriver 18 drives the screw to rotate and gradually move downward, and the sensor sheet 14 on the electric screwdriver 18 also moves downward with the electric screwdriver 18; when floating occurs, the sensor sheet 14 is higher than the predetermined position, and the sensor sheet 14 is detected by the sensor 23, and a signal is sent to the alarm unit, and the alarm unit works. The sensor 23 can be a proximity switch, a Hall sensor 23, etc., and the alarm unit can be an acousto-optic circuit, which is a prior art, such as an alarm circuit.

[0022] Furthermore, the vertical base plate 6 is provided with a plurality of vertical guide rails 8, the upper end of the vertical guide rail 8 is connected to an upper slider 4, the upper slider 4 is connected to a motor seat 3, the motor seat 3 is connected to the motor, and the upper end of the vertical base plate 6 is connected to a supporting plate 2, and the lifting mechanism includes an upper cylinder 1 fixed to the supporting plate 2, and the upper cylinder 1 is connected to the motor seat 3.

[0023] By providing the vertical guide rail 8, the upper slide block 4 and the upper cylinder 1, the driving motor 5 can move up and down smoothly.

[0024] Furthermore, the lower end of the vertical guide rail 8 is connected to a lower slider 15, the lower slider 15 is connected to a connecting plate 24, the lower end of the connecting plate 24 is connected to a connecting block 16, the connecting block 16 is fixedly connected to a screw clamp 17, and the connecting plate 24 is provided with a fixed structure connected to the vertical base plate 6.

[0025] In specific applications, the position of the screw clamp 17 needs to be fixed, and the position needs to be adjusted in the early stage; therefore, by setting the lower slider 15, the position of the connecting plate 24 and the screw clamp 17 can be adjusted; secondly, the connecting plate 24 is fixedly connected to the vertical base plate 6 through a fixed structure.

[0026] Preferably, the fixing structure includes: the connecting plate 24 is provided with a plurality of connecting holes, the vertical base plate 6 is provided with connecting grooves corresponding to the connecting holes, and the vertical base plate 6 is fixedly connected to the connecting plate 24 by bolts passing through the connecting holes and the connecting grooves. Of course, the fixing structure can also be other structures.

[0027] Furthermore, a middle slider 10 is connected to the middle part of the guide rail, and the middle slider 10 is connected to an intermediate seat 11. A position adjustment structure is provided between the intermediate seat 11 and the vertical base plate 6. The front end surface of the intermediate seat 11 is connected to an orientation block 12. An orientation groove 13 is provided in the middle of the orientation block 12. The upper end of the electric screwdriver 18 is connected to a fixed sleeve 25, and the fixed sleeve 25 is sleeved with the orientation groove 13 and can move up and down relative to the orientation groove 13. The upper end of the fixed sleeve 25 extends out of the fixed sleeve 25 and is connected to the drive motor 5 through the intermediate rod 9. The two ends of the intermediate rod 9 are respectively connected to the rotating shaft of the drive motor 5 and the fixed sleeve 25 through a universal joint 7.

[0028] In order to keep the electric screwdriver 18 stable during the up and down movement, the technical solution sets an orientation block 12, the positioning block is provided with an orientation slot 13, and the fixing sleeve 25 is sleeved on the orientation slot 13 and can move up and down relatively. Secondly, in order to prevent the positioning block from moving up and down during the working process, the technical solution sets a position adjustment structure, and at the beginning, the height of the positioning block is adjusted, and after the adjustment is completed, it is fixed by the position adjustment structure.

[0029] Furthermore, the position adjustment structure includes a protrusion 20 arranged on the side of the intermediate seat 11, and an upper adjustment block (not shown in the figure) is provided at the upper end of the vertical substrate 6. The upper adjustment block and the protrusion 20 are both provided with coaxial vertical shaft holes. An adjustment rod 19 is connected between the upper adjustment block and the protrusion 20, and the adjustment rod 19 is respectively connected to the upper adjustment block and the protrusion 20 through the vertical shaft hole.

[0030] The protrusion 20 is connected to the upper adjustment block through the adjustment rod 19, thereby fixing the position of the middle seat 11. Preferably, nuts are respectively threadedly connected to the two ends of the adjustment rod 19, and the adjustment rod 19 is fixed by the nuts so as not to move up and down.

[0031] Furthermore, a connecting hole is provided on the side of the orienting block 12 and is connected to a vertical piece 22 . An adjusting slot 21 matching the connecting hole is provided at the upper end of the vertical piece 22 . The sensor 23 is connected to the lower end of the vertical piece 22 .

[0032] By providing the adjustment slot 21 , the position of the vertical piece 22 can be adjusted, thereby making the position of the sensor 23 adjustable, which is convenient for use.

[0033] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A screw locking mechanism, comprising: a vertical A base plate, a driving motor, an electric screwdriver and a screw clamp; the upper end of the vertical base plate is connected with a lifting mechanism, the lifting mechanism is connected to the driving motor, the driving motor is connected to the electric screwdriver through a transmission unit, and one end of the electric screwdriver extends into the screw clamp; The invention is characterized in that it also includes a detection structure for detecting coverage, the detection structure includes a sensing sheet connected to the electric screwdriver, a sensor for sensing the position of the sensing sheet, and an alarm unit, the sensor is electrically connected to the alarm unit; when the electric screwdriver floats, the sensor sends a signal to the alarm unit, and the alarm unit alarms.

2. A screw locking mechanism according to claim 1, characterized in that: The vertical base plate is provided with a plurality of vertical guide rails, the upper end of the vertical guide rails is connected with an upper slider, the upper slider is connected with a motor seat, the motor seat is connected to the motor, and the upper end of the vertical base plate is connected with a bearing plate. The lifting mechanism includes an upper cylinder fixed to the bearing plate, and the upper cylinder is connected to the motor seat.

3. A screw locking mechanism according to claim 2, characterized in that: The lower end of the vertical guide rail is connected with a lower slider, the lower slider is connected with a connecting plate, the lower end of the connecting plate is connected with a connecting block, the connecting block is fixedly connected with a screw clamp, and the connecting plate is provided with a fixing structure connected with the vertical base plate.

4. A screw locking mechanism according to claim 3, characterized in that: The fixing structure comprises: a connecting plate is provided with a plurality of connecting holes, a vertical base plate is provided with connecting grooves corresponding to the connecting holes, and the vertical base plate is fixedly connected to the connecting plate by bolts passing through the connecting holes and the connecting grooves.

5. A screw locking mechanism according to claim 2, characterized in that: A middle slider is connected to the middle part of the guide rail, and the middle slider is connected to an intermediate seat. A position adjustment structure is provided between the intermediate seat and the vertical base plate. An orientation block is connected to the front end surface of the intermediate seat, and an orientation groove is provided in the middle part of the orientation block. A fixed sleeve is connected to the upper end of the electric screwdriver, and the fixed sleeve is sleeved with the orientation groove and can move up and down relative to the orientation groove. The upper end of the fixed sleeve extends out of the fixed sleeve and is connected to the drive motor through an intermediate rod, and both ends of the intermediate rod are respectively connected to the drive motor shaft and the fixed sleeve through universal joints.

6. A screw locking mechanism according to claim 5, characterized in that: The position adjustment structure includes a protrusion arranged on the side of the middle seat, an upper adjustment block is arranged on the upper end of the vertical base plate, the upper adjustment block and the protrusion are both provided with coaxial vertical shaft holes, an adjustment rod is connected between the upper adjustment block and the protrusion, and the adjustment rod is respectively connected to the upper adjustment block and the protrusion through the vertical shaft hole.

7. A screw locking mechanism according to claim 5, characterized in that: The side of the directional block is provided with a connecting hole and connected with a vertical piece, the upper end of the vertical piece is provided with an adjusting groove matched with the connecting hole, and the lower end of the vertical piece is connected with the sensor.

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