WO2016106684A1

WO2016106684A1 - Screw locking device and system

Info

Publication number: WO2016106684A1
Application number: PCT/CN2014/095894
Authority: WO
Inventors: 何林波; 陈红斌; 吕战争
Original assignee: 深圳市配天智造装备股份有限公司
Priority date: 2014-12-31
Filing date: 2014-12-31
Publication date: 2016-07-07
Also published as: CN107000138A

Abstract

A screw locking device and system. The screw locking device comprises a base (1), a screw locking mechanism installed on the base, and an axially driving mechanism (2) for driving the screw locking mechanism to perform axial movement. The screw locking mechanism comprises a motor (3), a connecting mechanism (4), and a bit (5). The motor is connected to the bit by means of the connecting mechanism, so as to drive the bit to rotate. The screw locking system comprises a numerical control system and the screw locking device. In this way, a screw can be locked rapidly and efficiently, cost is low, and noise is low.

Description

Screw locking device and system

[Technical Field]

The present invention relates to the field of automatic locking machinery, and in particular to a screw locking device and system.

【Background technique】

In the existing screw locking device, the servo motor generally drives the screwdriver up and down through the screw rod and the connecting plate to limit the position of the cylinder, and then passes the gas batch or the electric batch lock screw. The structure of the screw locking device of the prior art is relatively complicated, and there are many disadvantages of the gas batch or the electric batch locking screw. The gas batch and the electric batch start slowly, and are easy to be damaged, need frequent replacement and maintenance, and the cost is high, and the electric batch speed Too low, affecting the screw locking efficiency, and the gas batch will produce more noise.

[Summary of the Invention]

The technical problem to be solved by the present invention is to provide a screw locking device and a system. The screw locking device has a simple structure, can quickly and efficiently lock the screw, and has low cost and low noise.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a screw locking device, including:

a base and a lock screw mechanism mounted on the base and an axial drive mechanism for driving the lock screw mechanism to move axially;

The lock screw mechanism includes a motor, a connection mechanism, and a bit, and the motor is coupled to the bit through the connection mechanism to drive the bit to rotate.

Wherein, the base is provided with a slide rail, and the lock screw mechanism is provided with a slider, and the slider is slidably engaged with the slide rail to enable the lock screw mechanism to slide axially.

Wherein the screw locking device further comprises a bearing, the connecting mechanism comprises a coupling, a connecting shaft and a bit connector, the bearing is disposed on the slider, and the motor passes through the coupling The connecting shaft is connected at one end, the connecting shaft passes through the bearing, and the other end of the connecting shaft is connected to the bit through the bit connector.

Wherein the other end of the connecting shaft is provided with a connecting hole, the bit is snapped into the connecting hole, and the bit connector is sleeved at a connection between the connecting shaft and the bit for The connecting shaft and the bit are fixed.

Wherein the axial drive mechanism is a cylinder, and an output end of the cylinder is coupled to the slider for driving the slider to move along the slide rail.

Wherein, the output end of the cylinder is sleeved with a spring for buffering when the cylinder is reset.

Wherein, the screw locking device further comprises a guiding member for guiding the bit head to move in the axial direction, and the guiding member is fixed on the frame by the guiding member mounting seat.

Wherein, the guide mounting seat is provided with a limiting screw for defining a stroke of the axial movement of the locking screw mechanism.

Wherein, the guiding member is provided with a first through hole and a second through hole, the first through hole penetrating the guiding member and accommodating a part of the batch head, wherein the second through hole is a screw feeding through hole, Connecting the first through hole.

Wherein, the screw locking device further comprises a batch mouth for clamping the screw, and the batch mouth is connected with the guiding member and communicates with the first through hole.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a screw locking system including a numerical control system and the above-mentioned screw locking device, wherein the numerical control system is used to control the screw locking device to perform a locking screw action.

The invention has the beneficial effects that: in contrast to the prior art, the invention connects the bit to the motor through the connecting mechanism, and the motor directly drives the bit to rotate for screw locking, and the axial movement of the locking screw mechanism passes. Driven by the axial drive mechanism, the screw locking device of the present invention eliminates the cumbersome connection structure and the screwdriver in the prior art, and the structure is simplified, and the batch head is directly driven by the motor, and the use of the gas batch or the electric power is also avoided. Batch, the acceleration of the motor is fast and the mute effect is good, so that the screw locking device of the invention has high efficiency and low noise, and the motor has long continuous use time, is not easy to be damaged, and can effectively save cost.

[Description of the Drawings]

1 is a schematic structural view of an embodiment of a screw locking device according to the present invention;

Figure 2 is a front elevational view showing the structure of an embodiment of a screw locking device of the present invention;

Figure 3 is a right side elevational view showing the structure of an embodiment of a screw locking device of the present invention;

Figure 4 is a cross-sectional view taken along line B-B of Figure 2;

Fig. 5 is a plan view showing the structure of an embodiment of a screw locking device according to the present invention.

【detailed description】

Embodiments of the present invention provide a screw locking device, including:

a base and a locking screw mechanism mounted on the base and an axial driving mechanism for axially moving the drive lock screw mechanism;

The locking screw mechanism includes a motor, a connecting mechanism and a bit, and the motor is connected to the bit through a connecting mechanism to drive the bit to rotate.

Wherein, the screw locking device further comprises a bearing, the connecting mechanism comprises a coupling, a connecting shaft and a bit connector, the bearing is arranged on the slider, the motor is connected with one end of the connecting shaft through the coupling, and the connecting shaft passes through the bearing and is connected The other end of the shaft is connected to the bit by a bit connector.

Wherein, the other end of the connecting shaft is provided with a connecting hole, the bit is snapped into the connecting hole, and the bit connector is sleeved at the connection of the connecting shaft and the bit for fixing the connecting shaft and the bit.

Wherein, the axial drive mechanism is a cylinder, and the output end of the cylinder is connected with the slider for driving the slider to move along the slide rail.

Wherein, the screw locking device further comprises a guiding member for guiding the bit to move in the axial direction, and the guiding member is fixed on the frame by the guiding member mounting seat.

Wherein, the guide mounting seat is provided with a limiting screw for limiting the stroke of the axial movement of the locking screw mechanism.

The guiding member is provided with a first through hole and a second through hole. The first through hole penetrates the guiding member and receives a part of the bit, and the second through hole is a screw feeding through hole and communicates with the first through hole.

The present invention adopts another embodiment to provide a screw locking system, which comprises a numerical control system and the above-mentioned screw locking device, and the numerical control system is used for controlling the screw locking device to perform the locking screw action.

As shown in FIG. 1 , an embodiment of the present invention provides a screw locking device including a base 1 and a locking screw mechanism mounted on the base 1 and an axial driving mechanism 2 for driving the locking screw mechanism to move axially. The locking screw mechanism comprises a motor 3, a connecting mechanism 4 and a bit 5; the base 1 is a supporting structure of the entire screw locking device, and the axial driving mechanism 2, the motor 3 and the bit 5 are directly or indirectly mounted to the machine. In the seat 1, wherein the axial drive mechanism 2 is used to drive the lock screw mechanism to move axially relative to the base 1, the motor 3 is used to provide a driving force for rotation, and the motor 3 is connected to the bit 5 through the connection mechanism 4 to drive The batch head rotates; the axial drive mechanism 2 can provide an axial driving force, the driving force output end of the axial drive mechanism 2 is connected to the motor 3, and the drive motor 3 moves in a straight line, and the motor of the embodiment of the invention can provide rotation The driving force of the motor 3 drives the connecting mechanism 4 to rotate the bit 5, and the screw is locked by the bit 5, and when the axial driving mechanism 2 drives the motor 3 to move in a straight line, the motor 3 drives the bit 5 along the connecting mechanism 4 Linear motion, on the head 5 4 connected to the connection means, the first batch of the lower end of the screw 5 cooperates for attachment screws. In the embodiment of the present invention, the connections between the mechanisms are connected in a detachable manner, such as bolting, etc., for easy replacement, and the flexibility and applicability of the screw locking device of the embodiment of the present invention are increased. The embodiment of the present invention drives the motor 3 through the axial drive mechanism 2 to drive the bit 5 to move linearly to the position of the screw to be locked, and then starts the motor 3, and the motor 3 drives the bit 5 to rotate and continues to pass the axial drive mechanism 2 The driving motor 3 drives the bit 5 to move in a straight line. Through the action of the axial driving mechanism 2 and the motor 3, the bit 5 is locked to the screw. After the locking is completed, the motor 3 is turned off, and the axial driving mechanism 2 drives the motor. 3 Move straight in the opposite direction to reset.

Different from the prior art, the embodiment of the present invention connects the bit 5 to the motor 3 through the connecting mechanism 4, and the motor 3 directly drives the bit 5 to rotate for screw locking, and the axial movement of the motor 3 and the bit 5 Driven by the axial drive mechanism 2, the screw locking device of the present invention eliminates the cumbersome connection structure and the screwdriver in the prior art, thereby simplifying the structure, and simultaneously driving the bit 5 through the motor 3 to avoid the use. The air batch or the electric batch, the acceleration of the motor is fast and the mute effect is good, so that the screw locking device of the invention has high efficiency and low noise, and the motor 3 has long continuous use time, is not easy to be damaged, and can effectively save cost.

2 to 5, wherein the screw locking device further comprises a bearing 44, a matching sliding rail 71 and a slider 72, and the connecting mechanism 4 comprises a coupling 41, a connecting shaft 42 and a bit connecting piece 43, the slide rail 71 is disposed on the base 1, the motor 3 and the bearing 44 are respectively disposed on the slider 72, wherein the motor 3 and the bearing 44 are fixedly mounted to the side of the slider 72 on the back side of the slide rail 71 through the mounting seat, respectively. Simultaneously moving with the slider 72, the axial driving mechanism 2 is connected with the slider 72, and the driving slider 72 is linearly moved along the sliding rail 71, so that the slider 72 drives the motor 3 to move linearly, thereby driving the bit 5 to move in a straight line, the motor 3 is connected to one end of the connecting shaft 42 through the coupling 41, that is, one end of the coupling 41 is connected to the rotating shaft of the motor, the other end is connected to the connecting shaft 42, the connecting shaft 42 passes through the bearing 44, and the other end of the connecting shaft 42 passes through the bit. The connecting member 43 is connected to the bit 5, and the embodiment of the present invention connects the bit 5 through the connecting shaft 42 and sleeves the bearing 44 on the connecting shaft 42 to ensure smooth rotation of the motor driving bit 5 and prevent the bit 5 from rotating. Radial vibration affects the linear motion of the bit 5 .

The other end of the connecting shaft 42 is provided with a connecting hole formed by the end of the other end of the connecting shaft 42 facing away from the axis of the connecting shaft 42. The bit 5 is snapped into the connecting hole, that is, the bit The upper end of the fifth end is inserted into the connecting hole and is engaged by the engaging structure, so that the bit 5 can be prevented from falling from the connecting hole after being inserted. Specifically, the engaging structure can be provided with an arc protrusion in the circumferential direction of the inner wall of the connecting hole. a corresponding circumferential groove is disposed on the upper outer wall of the bit 5, and when the bit 5 is inserted into the connecting hole, the arcuate protrusion of the inner wall of the connecting hole is engaged in the groove of the outer wall of the bit 5; the bit connector 43 is sleeved At the junction of the connecting shaft 42 and the bit 5, the connecting shaft 42 and the bit 5 are fixed, so that the bit 5 is synchronously rotated with the connecting shaft 42 and moved in a straight line.

The motor 3 is a servo motor, the number of rotations of the servo motor can be controlled, and the precision is high. The embodiment of the invention adopts a servo motor to drive the bit 5 to rotate and screw the lock, which can improve the stability and accuracy of the screw lock. , thereby improving work efficiency.

Wherein, the axial drive mechanism 2 is a cylinder, the cylinder is disposed on the base 1, and the output end is connected with the slider 72 for driving the slider 72 to move along the slide rail 71; specifically, the cylinder output end can pass through the L-shaped plate 73. Connected to the slider 72, the vertical portion of the L-shaped plate 73 is fixedly coupled to the slider 72 by bolts, and the horizontal output portion of the L-shaped plate 73 is fixedly connected.

Wherein, the output end of the cylinder is sleeved with a spring 22 for buffering when the cylinder is reset. When the cylinder output end is moved upward and reset, the spring 22 can prevent the lock screw mechanism from causing a hard impact on the cylinder due to large inertia; In the embodiment of the invention, a limiting block can be arranged on the base 1, and the output end of the cylinder is connected to the L-shaped plate 73 through the limiting block, and the cylinder output end between the horizontal portion of the L-shaped plate 73 and the limiting block is sleeved. A spring 22 is provided such that when the cylinder output is reset to compress the spring 22, the spring 22 generates a reverse force to the horizontal portion of the L-shaped plate 73, thereby buffering the reset of the motor 3; In the embodiment of the invention, the length of the spring 22 in the natural state (without being compressed or stretched) should be equal to or greater than the distance between the horizontal portion of the L-shaped plate 73 and the limiting member 21 when the cylinder output end is in the home position, so that The spring 22 generates a damping force to the L-shaped plate 73 before the motor 3 is reset to produce a hard impact on the cylinder, but the spring 22 cannot be too long to affect the reset of the cylinder. When the length of the spring 22 in the natural state should be greater than the distance between the horizontal portion of the L-shaped plate 73 and the limiting member 21 when the cylinder output end is in the original position, when the cylinder drives the axial driving mechanism 2 to move downward to lock the screw At this time, the spring 22 can also provide a downward thrust to the horizontal portion of the L-shaped plate 73 to assist the cylinder drive, thereby saving the energy required for the cylinder to output power.

Wherein, the screw locking device further comprises a guiding member 6 for guiding the bit 5 to move in the axial direction, the guiding member 6 is disposed on the base 1, and the lower end of the bit 5 is connected with the guiding member 6. When the bit 5 is moved in the axial direction, the lower end of the bit 5 is axially moved in the guide member 6 by the guiding of the guide member 6. The invention guides the movement of the lower end of the bit 5 by providing the guiding member 6, ensures the accuracy of the movement of the lower end of the bit 5, and improves the precision of the screw locking.

Wherein, the guiding member 6 is fixed on the machine base 1 through the guiding member mounting seat 62; the guiding member mounting seat 62 is detachably fixed to the machine base 1 by bolts or the like, and the guiding member 6 is mounted on the guiding member mounting seat 62 through the guiding The mounting seat 62 fixes the guiding member 6 to facilitate adjusting the angle of the guiding member 6 such that the first through hole 81 is in the axial direction of the bit 5 . In the embodiment of the present invention, a limit screw 63 may be disposed at the upper end of the guide mounting seat 62 for defining a stroke of the downward movement of the lock screw mechanism, preventing the lock screw mechanism from moving downward excessively and disengaging the slider 72. The slide rail 71 can prevent the lock screw mechanism from moving downward excessively and causing damage to the cylinder; when the cylinder drive lock screw mechanism moves axially downward, when the bearing mount 64 for mounting the bearing contacts the limit screw 63, The lock screw mechanism is no longer moving downward; it will be understood that in the embodiment of the invention, when the cylinder is in the reset state, the distance between the bearing mount 64 and the limit screw 63 should be less than the maximum stroke of the cylinder output.

The guiding member 6 is provided with a first through hole 81 and a second through hole 82. The first through hole 81 penetrates the guiding member 6 and accommodates a part of the bit 5, and the first through hole 81 communicates with the upper end and the lower end of the guiding member 6, The direction of the through hole 81 is the same as the axial direction of the bit 5, the lower end of the bit 5 is inserted into the first through hole 81, and the driving mechanism 2 of the axial drive mechanism 3 drives the bit 5 to move along the first through hole 81. The second through hole 82 is a screw feeding through hole communicating with the first through hole 81. One end of the second through hole 82 communicates with the side surface or the upper end surface of the guiding member 6, and the other end communicates with the first through hole 81, and the axial driving mechanism 2, after the motor 3 is reset, the position where the second through hole 82 is connected to the first through hole 81 should be below the bit 5 so that the screw can smoothly enter the first through hole 81 from the second through hole 82; The second through hole 82 of the embodiment is a screw feed passage that is coupled to the screw feed feeder.

The screw locking device of the embodiment of the present invention further includes a batch nozzle 61. The batch nozzle 61 is connected with the guiding member 6 and communicates with the first through hole 81. The chuck opening of the batch nozzle 61 is larger than the screw cross section of the screw. The screw has a small cross section for holding the screw; the screw feeder blows the screw into the second through hole 82, and the screw enters the first through hole 81 from the second through hole 82 and follows the first through hole 81. Entering the batch nozzle 61, clamping the screw through the batch nozzle 61, and then starting the axial driving mechanism 2 to drive the motor 3 to drive the air batch to move along the first through hole 81 to the screw, and then starting the motor 3 to drive the gas batch rotation, and the axial direction The drive mechanism 2 continues to provide an axial driving force, and the screw is squeezed out of the batch nozzle 61 by the axial drive mechanism 2 and the motor 3, and is locked.

Another embodiment of the present invention provides a screw locking system including a numerical control system and a screw locking device in the above embodiment. The numerical control system is electrically connected to the axial driving mechanism 2 and the motor 3 for controlling the screw locking. The device performs a lock screw action, and the numerical control system may further comprise a plurality of detecting devices (such as sensors, etc.) for detecting the reset of the motor 3, the feeding of the screw, and whether the bit 5 is moved to the screw, etc., through a plurality of detecting devices The entire screw locking device is operated accurately, and the screw locking operation is controlled accurately.

Different from the prior art, the screw locking device in the screw locking system of the embodiment of the present invention saves the complicated connection structure and the screwdriver in the prior art, and the structure is simplified, and the motor is directly driven by the numerical control device to drive the batch. The operation of the first head 5 also avoids the use of air batch or electric batch, the acceleration of the motor is fast and the mute effect is good, so that the screw locking device of the invention has high efficiency and low noise, and the motor is continuously used for a long time and is not easy to be damaged. Can effectively save costs.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformation of the present invention and the contents of the drawings may be directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

A screw locking device, comprising:

a base and a lock screw mechanism mounted on the base and an axial drive mechanism for driving the lock screw mechanism to move axially;

The lock screw mechanism includes a motor, a connection mechanism, and a bit, and the motor is coupled to the bit through the connection mechanism to drive the bit to rotate.
The screw locking device according to claim 1, wherein the base is provided with a slide rail, and the lock screw mechanism is provided with a slider, and the slider is slidably engaged with the slide rail to make The lock screw mechanism is axially slidable.
A screw locking device according to claim 2, wherein said screw locking device further comprises a bearing, said coupling mechanism comprising a coupling, a connecting shaft and a bit connector, said bearing being disposed on said On the slider, the motor is connected to one end of the connecting shaft through the coupling, the connecting shaft passes through the bearing, and the other end of the connecting shaft is connected to the bit through the bit connector .
The screw locking device according to claim 3, wherein the other end of the connecting shaft is provided with a connecting hole, the bit is snapped into the connecting hole, and the bit connector is sleeved in the a joint of the connecting shaft and the bit for fixing the connecting shaft and the bit.
The screw locking device according to any one of claims 1 to 4, wherein the axial driving mechanism is a cylinder, and an output end of the cylinder is connected to the slider for driving the slider Move along the slide rails.
The screw locking device according to claim 5, wherein the output end of the cylinder is sleeved with a spring for buffering when the cylinder is reset.
The screw locking device according to any one of claims 1 to 4, wherein the screw locking device further comprises a guiding member for guiding the bit to move in the axial direction, and the guiding member is guided The mounting seat is fixed to the base.
The screw locking device according to claim 7, wherein the guide mounting seat is provided with a limiting screw for defining a stroke of the axial movement of the locking screw mechanism.
A screw locking device according to claim 7, wherein said guide member is provided with a first through hole and a second through hole, said first through hole penetrating said guide member and accommodating said portion of said bit The second through hole is a screw feed through hole that communicates with the first through hole.
A screw locking device according to claim 9, further comprising a batch mouth for holding a screw, said batch nozzle being coupled to said guide member and communicating with said first through hole.
A screw locking system, comprising: a numerical control system and a screw locking device according to any one of claims 1 to 10, wherein the numerical control system is configured to control the screw locking device to perform a locking screw action .