JPH0722240B2 - Pin positioning device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pin inserting machine for inserting and inserting a pin to be inserted, which is used as a conductive terminal pin, such as a connector inserting pin on a printed board, at a predetermined position on the printed board. The present invention relates to a pin positioning device.

[0002]

2. Description of the Related Art Generally, for example, a printed circuit board used for a game electronic device is constructed as shown in FIG.

That is, in FIG. 8, the printed circuit board W used in the electronic device for games is formed by connecting a plurality of printed circuit board elements b inside a lead frame a. 7) b, each pair of reference holes c and each pair of insertion holes e of each pair of inserted pins d to be inserted as conduction terminal pins are formed. The inserted pin d is inserted.

The pin inserting machine for inserting the insertion pin d into the insertion hole e of the printed circuit board element b of this type, which has been already proposed, is like a well-known IC mounting device as shown in FIG. Is configured.

That is, in FIG. 7, a moving table f having a frame shape has an X axis (not shown) formed by each ball screw.
And a Y-axis (not shown) are independently mounted horizontally, and pulse motors (not shown) are connected to the X-axis and the Y-axis, respectively. By driving both the X-axis and the Y-axis, the moving table f itself screwed on the X-axis and the Y-axis is moved in the X-direction and the Y-direction and stopped at a predetermined position, and this movement is performed. The printed circuit board element b placed on the table f is moved to a predetermined position and stopped, and then each of the inserted pins d gripped by the pin gripping device g is passed through the printed circuit board element b from above. The aforesaid attached pins d are attached so as to contact the anvils h so as to form a predetermined height.

[0006]

However, the pin positioning device in the pin inserting machine having the structure such as the IC mounting device described above uses the ball screws and the pulse motors for driving the ball screws on the moving table f. In addition to requiring a highly accurate control mechanism and control circuit, a position detection sensor for detecting each insertion hole e of the printed circuit board element b and an attitude control device used in combination with a CCD camera must be incorporated. It is difficult to provide at low cost.

The present invention has been made in view of the above-mentioned circumstances, and the pins to be inserted are inserted into the printed circuit board from below without using each ball screw or each pulse motor for driving them. An object of the present invention is to provide a pin positioning device in a pin inserting machine in which a pin to be inserted is accurately inserted into a predetermined position without using an anvil.

[0008]

According to the present invention, in a pin inserting machine for inserting a pin to be inserted into a printed circuit board at a predetermined position, a guide rail is mounted on the machine frame. A vertical support stand is erected on the machine frame next to the guide rails, and a guide pin elevating device having guide pins on the vertical support stand is erected vertically through the reference hole of the printed circuit board. The head lifting device is erected on the machine frame directly below the guide pin elevating device, and the head lifting device is provided with an outer frame body having a pair of guide rods to lift it. An inner frame body provided with a pair of guide rods is fitted to the rods so that they are orthogonal to each other so as to hold the neutral position with springs. Mount it, and fit the guide pin on the top of this head body. And it is provided with a guide hole and the insertion pin.

[0009]

According to the present invention, the printed circuit board placed on the guide rails of the machine frame is preliminarily leveled and stopped at a predetermined position to stand by, and thereafter the guide pin lifting device is operated to move the guide pins. The outer frame body, the inner frame body, and the head body are fitted into the guide hole through the reference hole of the printed circuit board while slightly moving in the front-rear direction and the left-right direction with the guide pin, and then the head lifting device is attached. When the pin insertion head is activated, the pin insertion head is lifted up to a predetermined position, and the pin to be inserted previously inserted into the pin insertion head is inserted into the insertion hole of the printed circuit board, and each ball screw or each pulse for driving them is inserted. The insertion pin is accurately attached to a predetermined position from below on a printed circuit board without using a motor and an anvil.

[0010]

The present invention will now be described with reference to the illustrated embodiments.

1 to 6, reference numeral 1 denotes an elongated machine frame of a pin insertion machine, and a pair of guide rails 2 are horizontally arranged on a support frame 3 above the machine frame 1. A pair of conveyor belts 4 are arranged side by side, and a pair of conveyor belts 4 have a reference hole Wc as a work (workpiece) and an insertion hole Wd at a starting end portion 2a (see FIGS. 2 and 3). The conveyor belt 4 is connected so as to be driven by a drive motor 5 provided in the machine frame 1. Further, as shown in FIG. 2, the machine frame 1 beside the guide rail 2 is provided so that the board moving device 6 horizontally and intermittently transfers the printed board W along the guide rail 2. In this substrate moving device 6, for example, an intermittent feed pawl 6c is attached to an output shaft 6b of a cylinder device 6a such as an air cylinder device.

Therefore, the intermittent feed claw 6c of the substrate moving device 6 intermittently moves the printed circuit board W along the guide rail 2 at a predetermined pitch for each printed circuit board element Wb and stops it. The entire stroke of the board moving device 6 is configured to return to the original position for each full length of the printed board W.

On the other hand, in the machine casing 1 below the guide rail 2, a pair of a first extracting device 7 and a second extracting device 8 is formed.
Are arranged side by side in a horizontal direction so as to be orthogonal to the guide rails 2.

That is, as shown in FIG. 2, the first extraction device 7 includes a frame-shaped holding plate 1a which is integrated with the machine frame 1.
Further, for example, a first cylinder device 7a such as an air cylinder device is horizontally provided orthogonal to the guide rail 2, and a pair of guide rods 7c are provided in parallel with the output shaft 7b of the first cylinder device 7a. , A frame-shaped support substrate 11 is connected to the output shaft 7b of the first cylinder device 7a by a connecting pin 7d, and the support substrate 11 is slidably fitted on a pair of guide rods 7c. The pin insertion head device 10 having the guide hole 9 and the pin to be inserted p is placed so as not to be displaced, and is moved to directly below the printed circuit board W (see FIGS. 2 and 3). .

The structure of the second extracting device 8 is the same as that of the first extracting device 7.

That is, as shown in FIG. 2, the second extraction device 8 includes a frame-shaped holding plate 1a which is integral with the machine frame 1.
Further, for example, a second cylinder device 8a such as an air cylinder device is provided horizontally orthogonal to the guide rail 2 and a pair of guide rods 8c are arranged in parallel to the output shaft 8b of the second cylinder device 8a. A frame-shaped support substrate 11 is connected to the output shaft 8b of the second cylinder device 8a by a connecting pin 8d, and the support substrate 11 is slidably fitted on a pair of guide rods 8c. The pin insertion head device 10 having the guide hole 9 and the pin to be inserted p is placed so as not to be displaced, and is moved to directly below the printed circuit board W (see FIGS. 2 and 3). .

On the other hand, the guide hole 9 and the inserted pin p
The pin insertion head device 10 having the above is configured as shown in FIGS.

That is, in FIGS. 3 to 6, on the frame-shaped support substrate 11, the connecting pins are arranged so that the output shafts 7b and 8b of the cylinder devices 7a and 8a are transferred to directly below the printed circuit board W. They are connected by 7d and 8d, and the supporting substrate 11 is slidably fitted on the pair of guide rods 7c and 8c. An outer frame body 12 having a gutter-shaped cross section is positionally regulated on the support substrate 11 and is quietly placed so as not to be displaced. , A pair of guide rods 13 are arranged in parallel. Further, an inner frame body 14 having a gutter-shaped cross section is slidably fitted in the middle of the guide rods 13 so as to be orthogonal to the outer frame body 12. Each coil spring 15 is elastically interposed between both sides and the compatible upward piece 12a, and each coil spring 15 positions the inner frame body 14 at the center of the outer frame body 12 at all times. It is urged to hold it. Further, a pair of guide rods 16 are provided in parallel on each rising piece 14a of the inner frame body 14, and in the middle of the two guide rods 16, the pin insertion head main body 17 is attached to the inner frame body 14. It is fitted so as to be orthogonal to and slidable. Also, coil springs 18 are elastically interposed between both sides of the inner frame 14 and the pin insertion head body 17, and the coil springs 18 connect the pin insertion head body 17 to each other. The inner frame body 14 is always biased and held so as to be positioned at the center portion thereof. Furthermore, a pair of guide holes 9 are vertically formed in the upper portion of the pin insertion head main body 17, and the upper openings of the guide holes 9 are countersunk to form guides to be described later. Pins 22, 2
5 is formed so as to smoothly guide the vehicle. Further, a pair of inserted pins p are vertically provided on the upper part of the pin insertion head main body 17 beside the guide holes 9 so as to be inserted into the insertion holes Wd of the printed circuit board W so as to be detachable. ing.

Therefore, the pin insertion head main body 17 of the pin insertion head device 10 is biased and held at the neutral position by the elasticity of the coil springs 15 and 18.

On the other hand, as shown in FIGS. 1 to 3, the first vertical support base 19 and the second vertical support base are provided in the machine casing 1 near the first extraction device 7 and the second extraction device 8. 20
Are vertically erected integrally with each other, and a first guide pin lifting device 21 is vertically erected on the first vertical support base 19. In addition, the output shaft 21 of the first guide pin lifting device 21
On a, a pair of guide pins 22 are vertically provided so as to fit into the guide holes 9 through the reference holes Wc of the printed circuit board W. The guide pins 22 have a pair of vertical guide rods 23. Are fitted to the guide holes of the first vertical support table 19 so as to be guided vertically. Further, a second guide pin lifting device 24 is vertically installed on the second vertical support base 20.
A pair of guide pins 25 are vertically installed on the output shaft 24a of No. 4 so as to fit into the respective guide holes 9, and a pair of vertical guide rods 26 are provided on the guide pins 25. It is provided so as to be fitted in a guide hole of the support base 20 and to guide vertically.

On the other hand, as shown in FIGS. 1 to 3, the machine frame 1 just below the guide pin lifting devices 21 and 24.
In the above, each head lifting device 27 is erected so that each pin insertion head device 10 can be moved up and down through the through hole (see FIG. 3) of the support substrate 11.

That is, as shown in FIGS. 1 to 3, the machine frame 1 directly below the guide pin lifting devices 21 and 24.
The support frames 28 of the head lifting devices 27 are arranged side by side, and the cylinder devices 29, such as air cylinder devices, are hung vertically on the support frames 28, respectively. Further, each horizontal support plate 30 is horizontally provided on the upper end portion of the output shaft 29a of each cylinder device 29.
A pair of guide rods 3 is provided at both ends of each horizontal support plate 30.
1 extends vertically through the guide holes of the support frames 28.

Therefore, the both head lifting devices 27 are moved in advance by the extraction devices 7 and 8 of the pin insertion head devices 10 directly below the printed circuit boards W waiting on the guide rails 2, respectively. Then, the cylinder devices 29 are operated, and the horizontal support plates 30 provided on the output shafts 29a of the cylinder devices 29 cause the pin insertion head devices 10 to pass through the through holes of the support substrate 11 (see FIG. 3). ), And is vertically lifted up to a certain height to stop, and the inserted pins p previously inserted in the pin insertion head devices 10 are inserted into the insertion holes Wd of the printed circuit boards W from below. (See FIGS. 3 and 6D).

The operation of the present invention will be described below.

Therefore, the printed circuit board W is made horizontal in advance along the guide rails 2 of the machine frame 1 and intermittently by the substrate moving device 6 via the conveyor belt 4 to the predetermined extraction device 7 predetermined. Transfer to the position, stop and wait.

Next, as shown in FIG. 2, the cylinder device 7a of the first extracting device 7 is operated to transfer the supporting substrate 11 to a position right below the printed circuit board W and stop it. The guide pin elevating device 21 is moved forward so that the guide pins 22 are fitted from above into the guide holes 9 through the reference holes Wc of the printed circuit board W while being guided by the guide rods 23 (FIG. 6). (A) (b)
(See (c)).

Particularly, since the outer frame body 12 and the inner frame body 14 of the pin insertion head device 10 are configured to move back and forth and left and right by the elastic force of the coil springs 15 and 18, so as to make fine adjustment. Even if the guide pins 22 passing through the reference hole Wc of the substrate W are slightly displaced with respect to the guide holes 9, the outer frame body 12 is moved by the guide pins 22.
Since the inner frame body 14 is moved back and forth and left and right, it can be fitted smoothly, and the relative position between the insertion hole Wd of the printed circuit board W and the inserted pin p can be accurately regulated and positioned. You can

Thereafter, the cylinder device 29 of the head lifting device 27 directly below the guide pin lifting device 21 on one side.
The output shaft 29 of this cylinder device 29
The horizontal support plate 30 provided at a vertically lifts the pin insertion head device 10 through the through hole (see FIG. 3) of the support substrate 11 to a certain height and stops the pin insertion head device 10. The inserted pin p having a flange previously inserted in the head main body 17 is inserted into each insertion hole Wd of each printed circuit board W from below (FIGS. 3 and 6D).
reference).

Finally, the cylinder device 29 of the head lifting device 27 moves back to lower the pin insertion head device 10 to a predetermined position through the through hole (not shown) of the support substrate 11 and stop it. At the same time (see FIG. 6 (e)), the one guide pin elevating device 21 also returns and returns to its original position.

Next, the substrate moving device 6 horizontally and intermittently transfers the printed substrate W along the guide rails 2 and stops at a predetermined position of the second extracting device 8 to stand by.

By repeating the above-mentioned operation once again at the position of the second extracting device 8, the inserted pins p at the positions shown by the dotted lines in FIG. 5 are inserted into the other insertion holes Wd of the printed circuit board W. It is designed to be attached to.

In this way, according to the present invention, a plurality (two sets) of inserted pins p are inserted into the printed circuit board W from below without using each ball screw, each pulse motor and anvil for driving them. Can be accurately and accurately inserted into a predetermined position.

According to the present invention, each of the pin insertion head devices 10 is provided with each of the support substrates 11 and each of the extraction devices 7 and 8 is provided.
Although the specific example in which the printed circuit board W is put in and taken out just under has been described above, for example, the pin insertion head device 10 is lifted to the head lifting device 27 within a range not changing the gist of the present invention. As described above, the design can be freely changed so that the head lifting device 27 is horizontally moved so as to be taken in and out immediately below the printed circuit board W.

[0034]

As described above, according to the present invention, in a pin inserting machine for inserting a pin to be inserted into a printed circuit board at a predetermined position, a guide rail is mounted on a machine frame. And a vertical support stand upright on the machine frame beside the guide rail, and a guide pin lifting device having guide pins on the vertical support stand is moved up and down through the reference hole of the printed circuit board. The head lifting device is erected on the machine frame directly below the guide pin lifting device, and the outer frame body provided with a pair of guide rods is lifted on the head lifting device. An inner frame body provided with a pair of guide rods is fitted to both of these guide rods at right angles so that a neutral position is held by springs.
The head body is fitted to both guide rods at right angles so as to hold the neutral position with a spring, and a guide hole and an inserted pin for fitting the guide pin are provided on the upper part of the head body. Since the head body can be freely moved back and forth and left and right for adjustment, it is easy to fit the guide pin into the guide hole of the head body through the reference hole of the printed circuit board. Not only that, but without using each ball screw or each pulse motor and anvil that drives them, the pin to be inserted can be accurately attached to the printed board from below at a predetermined position, and a complicated Since no control mechanism or control circuit is used, it has an excellent effect that it can be provided at low cost.

[Brief description of drawings]

FIG. 1 is a front view of a pin insertion device of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged side view showing the main part of the pin insertion device of the present invention.

FIG. 4 is a sectional view taken along the chain line AA in FIG.

5 is a plan view of FIG.

FIG. 6 is a diagram for explaining the operation of the present invention.

FIG. 7 is a sectional view showing only a main part of a conventional pin insertion device.

FIG. 8 is a plan view of a printed circuit board used as an example in a conventional pin insertion device.

[Explanation of symbols]

 1 machine frame 2 guide rail 6 substrate moving device 9 guide hole 10 pin insertion head device 11 support substrate 12 outer frame body 14 inner frame body 17 head body 19 vertical support stand 21 guide pin lifting device 27 head lifting device

Claims (1)

[Claims] 1. A pin inserting machine for inserting pins to be inserted into a printed circuit board at a predetermined position, and guide rails arranged in parallel so as to mount the printed circuit board on a machine frame, and the guide rails. And a guide pin elevating device having a vertical support stand erected on the machine frame beside, and a guide pin erected vertically on the vertical support penetrating the reference hole of the printed circuit board, and the guide. A head lifting device standing upright on the machine frame directly below the pin lifting device, an outer frame body provided with a pair of guide rods provided so as to lift the head lifting device, and both guide rods. An inner frame body provided with a pair of guide rods that are orthogonally fitted so as to hold the neutral position by a spring, and a head that is fitted orthogonally to both guide rods so as to hold the neutral position by a spring. The main body and the upper part of this head main body Pin Pin positioning device, characterized by comprising a guide hole and the insertion pin which is adapted to fit the.