WO2021149988A1

WO2021149988A1 - Automatic terminal feeding device

Info

Publication number: WO2021149988A1
Application number: PCT/KR2021/000681
Authority: WO
Inventors: 방영진
Original assignee: 방영진
Priority date: 2020-01-20
Filing date: 2021-01-18
Publication date: 2021-07-29
Also published as: KR102358815B1; KR20210093557A

Abstract

The present invention relates to a terminal feeding device which is provided in a PCB assembly device and automatically supplies terminals. The terminal feeding device comprises: a base frame (100) having constituent components mounted thereon and playing the role of a base; a servo motor (200) mounted on one side of the base frame (100) and repeating forward and reverse rotation within a predetermined angle in accordance with a control signal; timing pulleys (310) which are provided in a pair, one of which coupled to a rotating shaft of the servo motor (200) and the other of which mounted on the other side of the base frame (100); a timing belt (320) mounted so as to be interlocked with both timing pulleys (310); a feeding block (400) which is coupled to the timing belt (320) and moves together with the timing belt (320); and a feeding bar (500) which is rotatably pin-coupled to the feeding block (400), moves a terminal by moving forward by as much as a feeding interval while interlocked with the terminal, and then moves backward to an initial position after being released from the interlocked state with the terminal.

Description

terminal automatic feeding device

The present invention relates to an automatic terminal feeding device installed in an apparatus for assembling a PCB by automatically inserting terminals of various standards according to a programmed sequence on the upper surface of a PCB supplied to a table.

The dedicated equipment for PCB assembly production performs a process of automatically inserting different types or specifications of terminal components into the PCB according to a pre-programmed sequence after supplying a flat-panel PCB to the table. Equipment is generally provided with a feeding device that automatically supplies terminal parts in the form of a reel.

1 shows an example of a feeding device currently being used, a protrusion protruding from the end of the feed bar that is coupled via a feed wheel and a connecting rod and advances in conjunction with the forward rotation of the feed wheel is a terminal by the action of a spring. Feeding of terminal parts is made by moving in a state of being engaged with the parts. The rear end of the protrusion of the feed bar is inclined so that the protrusion can ride over the terminal part in the process of reversing the feed wheel and returning to the initial position while the feed wheel rotates in reverse. becomes

As such an inclined surface is provided, a gap (space) occurs between the protrusion and the terminal while the protrusion of the feed bar is engaged with the terminal part. A problem of over-feeding may occur. This is because, even if the feed bar stops at the correct position, the terminal part can move more by the distance between the terminal part and the inclined surface of the rear end of the protrusion even after the feed bar stops due to the moving inertia. This problem increases as the feeding speed increases. do.

In addition, the rear end of the protrusion of the feed bar rides over the terminal part in the process of the feed wheel rotating backwards and the feed bar reversing and returning to the initial position. In this process, mutual friction occurs and scratches on the surface of the terminal parts. there is.

In addition, when feeding terminals with different pitch intervals, the feed wheel is replaced together with the feed bar equipped with a protrusion, and the entire length is reset by adjusting the end bearing of the connecting rod, and the rotation angle range of the feed wheel is also reset. However, since it is not easy to determine the exact position of the feed bar projection corresponding to the rotation angle of the feed wheel, the setting operation is cumbersome, and there is a burden of unnecessary replacement of many parts.

[Prior art literature]

Registered Patent No. 10-1339194

Registered Patent No. 10-1339195

Registered Patent No. 10-1348813

The object of the present invention created to solve the above problems is as follows.

First, it is an object of the present invention to provide an automatic feeding device of a new concept capable of preventing overfeeding in the supply process of the terminal.

Second, it is another object of the present invention to provide an automatic feeding device of a new concept that can prevent the occurrence of scratches on the terminal surface.

Third, it is another object of the present invention to provide an automatic feeding device of a new concept that can be easily set by replacing only the terminal guide 510 according to the terminal guide 510 even when the size of the terminal is different, and can be easily set only by numerical control of the rotation angle.

The technical configuration of the present invention created to achieve the above object is as follows.

The present invention relates to a terminal feeding device that is installed in a PCB assembly device and automatically supplies a terminal, comprising: a base frame 100 serving as a base on which components are mounted; a servomotor 200 mounted on one side of the base frame 100 and repeating forward and reverse rotation within a preset angle range according to a control signal; The two form a pair, one of which is coupled to the rotation shaft of the servomotor 200, and the other is a timing pulley 310 mounted on the other side of the base frame 100; a timing belt 320 mounted to engage each of the timing pulleys 310; a feeding block 400 coupled to the timing belt 320 and operating together with the timing belt 320; And, rotatably pin-coupled to the feeding block 400, advance by the feeding interval in a state engaged with the terminal to move the terminal, and then the feeding bar 500 that moves backward to the initial position after the state of engagement with the terminal is released; It is characterized in that it comprises a.

Technical effects according to the configuration of the present invention are as follows.

First, it is possible to prevent overfeeding in the supply process of the terminal.

In other words, in the case of the present invention, the groove portion 515 of the terminal guide 510 does not need to be provided with an inclined surface, and the groove portion 515 of the terminal guide 510 does not need to be provided with an inclined surface and is made of only a vertical surface. When the terminal guide 510 stops at the correct position during the feeding process because a gap is not generated in the state engaged with the , the terminal also stops at the correct position, and even if the feeding speed increases, overfeeding of the terminal does not occur.

Second, it is possible to prevent the occurrence of scratches on the terminal surface.

In other words, in the case of the present invention, when the piston rod 635 of the cylinder 630 is elongated, as shown in FIG. 4 , the concave portion 515 of the terminal guide 510 and the terminal while rotating the other side of the feeding bar 500 are pushed and rotated. is released and the timing pulley 310 is rotated in reverse (clockwise) by the servo motor 200, the feeding block 400, the feeding bar 500 and the terminal guide 510 along the timing belt 320 ) is reversed (right direction) and returned to the original position. As such, the process of returning to the initial position after the engagement of the terminal with the groove 515 of the terminal guide 510 is released is made, thereby friction with the terminal. As this does not occur, it is possible to fundamentally prevent scratches on the terminal.

Third, even when the size of the terminal is different, only the terminal guide 510 is replaced accordingly, and the setting can be completed simply by numerical control for changing the rotation angle of the servomotor 200 .

Fourth, even when feeding two or more terminals at the same time, if only the rotation angle of the servo motor 200 is input and set differently, the feeding interval can be changed, and there is no need to add or replace component parts.

1 shows a conventional automatic feeding device.

2 shows a specific embodiment of the present invention.

3 illustrates a case in which the terminal guide 510 of the feeding bar 500 advances in a state engaged with the terminal.

4 illustrates a case in which the terminal guide 510 of the feeding bar 500 moves backward in a state in which engagement is released by the operation of the cylinder 630 .

[Explanation of code]

100: base frame

200: servo motor

310: timing pulley

320: timing belt

400: feeding block

500: feeding bar

510: terminal guide

515: groove part

610: spring

620: spring mounted bar

630: cylinder

635: piston rod

700: guide plate

Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

It relates to a terminal feeding device that is installed in a PCB assembly device and automatically supplies a terminal, and as shown in FIGS. 2 to 4 , a base frame 100 , a servo motor 200 , a timing pulley 310 , and a timing belt 320 , a feeding block 400 , a feeding bar 500 , a cylinder 630 , a terminal guide 510 , and a spring 610 .

The base frame 100 serves as a base on which the components are mounted, and design changes are possible in various forms if it can maintain a space and appropriate strength to which the marine components can be mounted, and is not limited to the form presented as an embodiment.

The servomotor 200 is mounted on one side of the base frame 100 and serves as a power source for feeding the terminals while repeating forward and reverse rotation within a preset angular range according to a control signal.

The servomotor 200 may select a product of an appropriate standard from among various commercially available products.

Two timing pulleys 310 form a pair, one of which is coupled to the rotation shaft of the servomotor 200 , and the other is mounted on the other side of the base frame 100 .

The timing belt 320 is mounted to engage each of the timing pulleys 310, and when the timing pulley 310 is rotated by the servomotor 200, the timing belt 320 also moves while forming an endless track.

The feeding block 400 is coupled to the timing belt 320 and moves together as the timing belt 320 moves.

That is, when the timing pulley 310 is rotated forward (counterclockwise in FIG. 2) by the servo motor 200, it advances together with the timing belt 320 (left direction in FIG. 2 or 3), When the timing pulley 310 is reversely rotated (clockwise in FIG. 2) by the servo motor 200, it moves backward together with the timing belt 320 (right direction in FIG. 2 or 4).

Since the timing belt 320 is engaged with the timing pulley 310, the movement distance of the timing belt 320 according to the rotation angle can be accurately calculated according to the relation between the circumference and the radius. Therefore, when the feeding interval of the terminal is changed, the feeding interval can be newly set simply and accurately by adjusting only the rotation angle range of the servomotor 200 according to the relational expression.

The feeding bar 500 is rotatably pin-coupled to the feeding block 400, moves forward by the feeding interval in a state engaged with the terminal, moves the terminal, and then moves backward to the initial position after the terminal-engaged state is released.

The terminal guide 510 is coupled to one side of the feeding bar 500 in a detachable structure, and an end of the terminal guide 510 is provided with a concave portion 515 corresponding to the distance between the terminals to be engaged with the terminal being fed. .

The concave portion 515 of the terminal guide 510 has a structure in which two protrusion shapes are spaced apart by a distance corresponding to the pitch interval of the terminal and vertically protrude, as shown in FIG. 3 or FIG. 4 .

The terminal guide 510 is coupled in a detachable structure (combination by pins or bolts), and when the pitch spacing of the terminals is different (when feeding terminals of different standards), a terminal provided with a recess 515 suitable for it If only the guide 510 is replaced and only the rotation angle of the servo motor 200 is set again, the rest of the components can be used as it is.

The groove portion 515 of the terminal guide 510 is precisely manufactured to match the pitch interval of the terminal, and unlike the prior art, there is no inclined surface at the rear end, so the groove portion 515 is engaged with the terminal, and the gap (space) This hardly occurs, and the problem of overfeeding according to the advance of the feeding bar 500 does not occur.

The spring 610 serves to provide an elastic force in the direction in which the groove portion 515 of the terminal guide 510 is engaged with the terminal, and as shown in FIG. 2 or FIG. 3, a separate spring-loaded bar 620. is provided, and the spring 610 may have a structure in which the spring 610 is mounted on the spring-loaded bar 620 .

The cylinder 630 is mounted on the feeding block 400 and the piston rod 635 is extended and contracted. As shown in FIG. 3, in the state in which the piston rod 635 is contracted, the terminal by the action of the spring 610. When the groove 515 of the guide 510 is engaged with the terminal, and the timing pulley 310 rotates forward (counterclockwise) by the servo motor 200, the feeding block 400 along the timing belt 320 ), the feeding bar 500 and the terminal guide 510 move forward (left direction) while feeding the terminal.

When the piston rod 635 of the cylinder 630 is extended, as shown in FIG. 4, while rotating the other side of the feeding bar 500, the engagement state between the concave portion 515 of the terminal guide 510 and the terminal is released, When the timing pulley 310 is reversely rotated (clockwise) by the servo motor 200, the feeding block 400, the feeding bar 500, and the terminal guide 510 are reversed (right direction) along the timing belt 320. to return to its original position.

As described above, since the process of returning to the initial position after the engagement of the terminal 515 and the groove 515 of the terminal guide 510 is released, friction with the terminal is not generated, thereby fundamentally preventing the terminal from being scratched.

As such, when the piston rod 635 is contracted in a state in which the feeding bar 500 and the terminal guide 510 are retracted (right direction) and returned to their original position, the feeding bar 500 returns to the original position by the action of the spring 610. While returning to the position of , the groove 515 of the terminal guide 510 is engaged with the terminal, and the feeding process is repeatedly performed.

The guide plate 700 is coupled along the longitudinal direction of the base frame 100, and serves to guide the terminal feeding in contact with the terminal.

As described above, specific embodiments of the present invention have been described with reference to the accompanying drawings, but the protection scope of the present invention is not necessarily limited to these embodiments, and various design changes within the scope that do not change the technical gist of the present invention, It is clear that addition or deletion of known technology, simple numerical limitation, etc. fall within the protection scope of the present invention.

Claims

It relates to a terminal feeding device that is installed in a PCB assembly device and automatically supplies a terminal,

a base frame 100 serving as a base on which components are mounted;

a servomotor 200 mounted on one side of the base frame 100 and repeating forward and reverse rotation within a preset angle range according to a control signal;

The two form a pair, one of which is coupled to the rotation shaft of the servomotor 200, and the other is a timing pulley 310 mounted on the other side of the base frame 100;

a timing belt 320 mounted to engage each of the timing pulleys 310;

a feeding block 400 coupled to the timing belt 320 and operating together with the timing belt 320; and,

A feeding bar 500 that is rotatably pin-coupled to the feeding block 400, moves the terminal forward by the feeding interval in a state engaged with the terminal, and then moves backward to the initial position after the terminal-engaged state is released;

Terminal automatic feeding device, characterized in that it comprises a.
In claim 1,

a cylinder 630 mounted on the feeding block 400 to expand and contract the piston rod 635; and,

a terminal guide 510 coupled to one side of the feeding bar 500 in a detachable structure and provided with a recess 515 corresponding to the spacing between the terminals to engage the terminals;

is further included,

When the piston rod 635 is extended, the engagement state between the concave portion 515 of the terminal guide 510 and the terminal is released while rotating the other side of the feeding bar 500 by pushing it,

Terminal automatic feeding device, characterized in that when the piston rod (635) is contracted, the feeding bar (500) returns to its original position, and the concave portion (515) of the terminal guide (510) and the terminal are engaged.
In claim 2,

a spring 610 that provides an elastic force in a direction in which the concave portion 515 of the terminal guide 510 coupled to one side of the feeding bar 500 is engaged with the terminal;

Terminal automatic feeding device, characterized in that it further comprises.
4. In any one of claims 1 to 3,

a guide plate 700 coupled along the longitudinal direction of the base frame 100 to guide the terminal feeding in contact with the terminal;

Terminal automatic feeding device, characterized in that it further comprises.