CN1051200C - Electronic component assembly device - Google Patents

Abstract

An electronic component mounting apparatus for mounting electronic components on a printed circuit board is composed of an apparatus main body and a ramp plate incorporated in the apparatus main body. The piston is arranged in the cylinder and can move back and forth, and the rod is fixed on the piston. An L-shaped fitting is fixed to the front end of the rod. A pin fixed to the cam plate reciprocates a moving blade of the inclined plate. When the lever is reciprocated, the pin is moved in the cam groove, and the movable blade is reciprocated in a direction perpendicular to the lever together with the cam plate. Thus, the lead wire of the electronic component inserted into the printed circuit board mounted on the inclined plate can be cut into a predetermined length and bent at a predetermined angle.

Description

Electronic component assembly device

The present invention relates to an electronic component mounting apparatus for mounting electronic components on a printed circuit board.

Conventional assembly of electronic components onto printed circuit boards is performed manually or fully automatically. In manual assembly, inserting electronic components on the printed circuit board, cutting unnecessary lead-out wires protruding from the printed circuit board and bending lead-out wires are all performed manually; in fully automatic assembly, the above-mentioned manual operations are mechanized. Operation.

However, in the conventional assembly of manually inserting electronic components into the printed circuit board, the electronic components cannot be evenly mounted on the printed circuit board due to the different degrees of cutting and bending of the lead wires. Due to this reason, the problem is that it will be difficult to solder the cut lead wire and the printed circuit board with solder, or when the printed circuit board is installed, the lead wire will contact with other components, etc., which will hinder the work after installation. , and because the installation time is long, the work efficiency cannot be improved.

On the other hand, compared with manual work, fully automatic assembly is installed equally, and the assembly time is shorter, but there is a problem that the cost of equipment investment is too high.

In order to solve the above existing problems, the present invention aims to provide a miniaturized and low-cost electronic component assembly device, which can assemble electronic components with high quality.

In order to achieve the above object, the present invention proposes an electronic component assembly device for installing electronic components on a printed circuit board, comprising: a guide plate, a fixed knife, a moving knife and a drive mechanism, and is characterized in that:

The guide plate is formed with a receiving hole for receiving and holding the printed circuit board;

The fast fixed knife is arranged on the lower side of the above-mentioned guide plate, forming a plurality of wire holes into which a plurality of lead-out wires are inserted, and a plurality of lead-out wires of the electronic components penetrate and protrude from the above-mentioned printed circuit bottom plate;

The movable knife is flat and is arranged between the above-mentioned guide plate and the above-mentioned fixed knife. a knife hole;

The driving mechanism makes the above-mentioned movable knife move in parallel;

Wherein, a slope facing the side of the guide plate is formed on the blade of the knife hole, and the lead-out wire is bent through the slope.

Wherein, at the above-mentioned knife hole, the two ends along the moving direction of the above-mentioned moving knife are respectively formed with the above-mentioned knife edge;

Wherein, the above-mentioned driving mechanism moves back and forth sequentially in two directions, one direction and the other direction along the moving direction of the moving knife, and when moving in one direction, the blade on the one side cuts at least one lead-out wire, and then moves in the other direction. When moving, the blade on the other side cuts at least another lead-out wire.

Wherein, the above-mentioned driving mechanism has a cylinder and a cam mechanism, and the cylinder has a rod that is telescopically driven in the axial direction; the cam mechanism is arranged between the above-mentioned cylinder and the above-mentioned moving knife, and the above-mentioned rod is extended or retracted. The stroke in a certain direction in the direction is converted into the reciprocating movement of the above-mentioned moving knife;

Wherein, the above-mentioned cam mechanism has a cam plate and a connecting pin, and a cam groove extending obliquely with the telescopic direction of the above-mentioned rod is provided on the cam plate, and is connected with the above-mentioned moving knife; the pin is inserted into the cam groove, and above rod connection.

Wherein, the above-mentioned driving mechanism has a cylinder and a cam mechanism, and the cylinder has a rod that is telescopically driven in the axial direction; the cam mechanism is arranged between the above-mentioned cylinder and the above-mentioned moving knife, and the above-mentioned rod is extended or retracted. The stroke in a certain direction in the direction is converted into the reciprocating movement of the above-mentioned moving knife.

Wherein, the above-mentioned cam mechanism has a cam plate and a connecting pin, and a cam groove extending obliquely to the telescoping direction of the above-mentioned rod is arranged on the said cam plate, and is connected with the above-mentioned moving knife; rod connection.

Wherein, the above-mentioned guide plate, the above-mentioned fixed knife and the above-mentioned movable knife are fixedly connected to each other, and can be separated from the above-mentioned driving mechanism as an inclined plate.

Wherein, the above-mentioned movable knife is equipped with a connecting part, and the said connecting part is protrudingly arranged on the above-mentioned driving mechanism, and can be clutched with the pin driven back and forth by the above-mentioned driving mechanism.

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. in,

1 is a cross-sectional view of an apparatus main body of an electronic component mounting apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of a device main body of the electronic component mounting device of the embodiment shown in FIG. 1 .

Fig. 3 is a view in the direction of arrow III in Fig. 2 .

4 is a plan view of a printed circuit board mounted on a sloped board of an electronic component mounting apparatus according to an embodiment of the present invention.

Fig. 5 is a sectional view of line V-V in Fig. 4 .

Fig. 6 is an exploded installation diagram of the inclined plate in this embodiment.

Fig. 7 is a plan view of a printed circuit board into which electronic components are inserted.

Fig. 8 is a partial side view of a printed circuit board into which electronic components are inserted.

Fig. 9 is a cross-sectional view of the state before the lead-out wires of the electronic component are cut.

Fig. 10 is a cross-sectional view of a state in which a lead wire of an electronic component is cut.

Embodiments of the present invention will be described below using drawings.

1 to 6 show an embodiment of the electronic component assembly device of the present invention.

The electronic component assembly device is composed of the device main body 10 shown in FIGS. 1-3 and the inclined plate 30 shown in FIGS. 4-6 , and operates with the inclined plate 30 installed in the main body 10 of the device.

As shown in FIG. 1 , the casing 11 of the device main body 10 is a box-shaped casing with an opening at the top. The base plate 12 is fixed on the inner wall of the housing 11, and the cylinder 20 is fixed on the lower end surface of the base plate 12 with an L-shaped fitting. The cylinder is a cylinder using air, and a piston not shown in the figure is supported on the inner wall of the cylinder 20 and can move back and forth. Under the action of air pressure in the cylinder, the piston can move back and forth in the left and right directions in Figure 1. The rod 21 is fixed on the piston. An L-shaped attachment 22 is fixed to the tip of the rod 21 . The attachment 22 moves along the longitudinal direction of the rectangular hole 12 a provided in the bottom plate 12 as the rod 21 reciprocates.

A pair of guide parts 25 are arranged on the upper end surface of the base plate 12 at a predetermined interval, and are relatively parallel to the direction perpendicular to the rod 21 and fixed on the base plate 12 with screws, and the cam plate 24 is fitted between the pair of guide parts 25 , can move back and forth with the direction of the rod 21, that is, the directions C and D perpendicular to the directions A and B in FIG. 2. On the lower end surface of the cam plate 24, a groove 24a is formed obliquely to the reciprocating direction of the rod 21, that is, the directions A and B in FIG. A pin 26 protruding upward from the upper end surface of the cam plate 24 is fixed to the upper end surface of the cam plate 24 .

As shown in FIG. 2 , at the four corners of the casing 11 , there are positioning pins 14 fixed on the elongated support plate 13 . As shown in FIG. 1 , the upper end of the casing 11 along the longitudinal direction protrudes upward from the support plate 13 .

The two-dot dash line shown in Fig. 1, Fig. 2 and Fig. 3 represents the state in which the inclined plate 30 is packed into the device main body 10, and the movement of the inclined plate 30 in the directions A and B in Fig. 2 is restricted by the casing 11, The movement of the inclined plate 30 in the C and D directions in FIG. 2 is restricted by the positioning pin 14. The inclined plate 30 is shown in FIGS. A three-layer structure is formed. The guide plate 31 and the fixed knife 50 clamp the guide plate 41 and fix each other with screws 61, and the movable knife 40 can move back and forth in the left and right directions in FIG. 4 . The slider 42 is respectively inserted into the insertion hole 31a, the fitting hole 40a, and the insertion hole 50a provided on the guide plate 31, the movable blade 40, and the fixed blade 50, and the movable blade 40 is reciprocated by the pin 26 inserted into the through hole 42a from below. move.

The guide plate 31 is provided with an insertion hole 31a for enabling the slider 42 to move back and forth, and accommodating holes 32 and 33 for receiving the original printed circuit boards 70 and 80 as shown in FIG. 4 . The cover plate 34 closing the insertion hole 31 a from above is fixed by screws 61 . The discharge holes 32 a , 33 a provided at the four corners of the storage holes 32 , 33 are discharge holes for shortening the processing time of the storage holes 32 , 33 . Semicircular holes 32 b , 33 b are provided on one side of the receiving holes 32 , 33 , so that the original printed circuit boards 70 , 80 can be easily taken out from the receiving holes 32 , 33 .

The movable knife 40 is clamped between the guide plate 31 and the fixed knife 50 , and its moving direction is guided by the guide plate 41 . The movable knife 40 has a fitting hole 40 a, and the slider 42 can be inserted into a position corresponding to the insertion hole 31 a of the guide plate 31 . In addition, at positions corresponding to the receiving holes 32 and 33 of the guide plate 31 , there are knife holes 45 into which lead wires of electronic components can be inserted. Blades 45 a are provided at both ends in the moving direction of the inner peripheral edge of the moving knife 40 forming the knife hole 45 . Between the blade 45a and the fixed blade 50, the lead wire of the electronic component can be cut to a predetermined length and bent at a predetermined angle.

The slider 42 is composed of a large-diameter portion 43 and a small-diameter portion 44, and has a through-hole 42a in the axial direction, so that the pin 26 provided on the cam plate 24 can be inserted from below. The upper end surface of the slider 42 is pressed by the cover plate 34 to prevent it from falling off from the top of the inclined plate 30 . In addition, the lower end surface of the large-diameter portion 43 is tied to the upper end surface of the movable knife 40 to prevent the slider from falling off from the bottom of the inclined plate 30 . The gap formed in the moving direction of the movable knife 40 is made extremely small so that the slider 42 fits in the fitting hole 40a, and notches 44a are provided at both radial ends of the small-diameter portion 44 of the slider 42. The axial length of 42 is slightly thicker than the overlapping thickness of the guide plate 31, the movable knife 40 and the fixed knife 50.

The fixed knife 50 has an insertion hole 50a, and the slider is inserted into the insertion hole 50a at a position corresponding to the fitting hole 40a, and can move back and forth. At the position corresponding to the knife hole 45, there is a wire hole 51 through which the lead wire of the electronic component can pass.

The original printed circuit boards 70 and 80 are composed of three printed circuit boards 71 and 81, respectively. Taking the original printed circuit board 70 shown in FIG. 7 as an example, the frame 72 provided around the printed circuit board 71 is removed and divided into each printed circuit board 71 . As shown in FIG. 8 , electronic components 73 such as capacitors and resistors are inserted at predetermined positions on the printed circuit boards 71 and 81 , and lead wires 74 protrude from the bottom of the printed circuit board 71 .

The procedure for mounting electronic components on the printed circuit board will be described below.

(1) The pin 26 is fitted into the through-hole 42 a of the slider 42 , and the inclined plate 30 is incorporated into the device main body 10 . At this time, the movement of the inclined plate 30 in the horizontal direction is restricted by the housing 11 and the positioning pin 14 .

(2) Insert the printed circuit original boards 70 and 80 of the electronic components by hand, insert the lead wires of the electronic components in the knife hole 45 and the wire hole 51, and insert in the receiving holes 32, 33 of the guide plate 31 on one side.

(3) When the operator puts the start switch not shown in the figure to "ON", the rod 21 moves back and forth along the directions A and B in Fig. 2 under the action of the air pressure in the cylinder. As the rod 21 moves back and forth, the pin 23 moves into the cam groove 24a, and the guide plate 25 guides the cam plate 24 to move back and forth along the directions C and D in FIG. The directions A and B in Fig. 2 are perpendicular. As the cam 24 reciprocates, the movable knife 40 also reciprocates. Along with the back-and-forth movement of bar 21, pin 23 moves in the cam groove 24a in A direction among Fig. 2, and cam plate 24 just moves toward C direction among Fig. 2, is located at one end of blade 45a at the two ends of knife hole 45 and the fixed knife 50 Cut off one end of the lead-out wire and bend it to the other side of the lead-out wire. Pin 23 moves to A direction among Fig. 2 and returns to B direction again, and cam plate 24 moves toward D direction among Fig. 2, and the other end of blade 45a and fixed knife 50 cut off the other side of lead-out line, and make it to the other side. The lead-out wire is bent on one side. In this way, the lead-out lines protruding from the bottom of the printed circuit original boards 70 and 80 are cut off by the blade 45a of the movable knife 40 and the fixed knife 50 to only protrude from the bottom of the printed circuit boards 71 and 81 as shown in FIG. Angled in directions facing each other. The bent shape of the lead-out wires relative to each other is to prevent the lead-out wires from coming into contact with the circuit board wiring of the printed circuit board 71 or other installed electronic components.

FIG. 9 is a cross-sectional view of a state in which a printed circuit board 70 is inserted into a lead wire 74 . If the movable knife 40 is moved to the left in the figure from this state, as shown in FIG. The tip of the lead wire is bent. Then, the lead-out line 74 on the left side among Fig. 10 will be cut off similarly by moving the moving knife 40 in the opposite direction, and the front end after cutting can also be bent to the opposite side to the lead-out line on the above-mentioned right side.

(4) After the cutting and bending of the lead wires are completed, the original printed circuit boards 70 and 80 are taken out from the assembly device. The printed circuit boards 70 and 80 taken out are divided into individual printed circuit boards after soldering electronic components to the original boards 70 and 80 with solder.

Then, by repeating the operation process of (2)-(4), electronic components can be efficiently mounted on the printed circuit board.

In this embodiment, the electronic components are inserted into the original printed circuit boards 70 and 80 by manual work, and the operator puts the start switch to "ON" to drive the cylinder 20 . In the present invention, automation can also be used to complete the insertion of the electronic components into the original printed circuit boards 70 and 80 and the driving of the air cylinders.

In addition, the shape and number of housing holes provided on the guide plate of the present invention for housing printed circuit boards will be changed corresponding to loaded printed circuit boards. With this change, the knife, that is, the position of the knife hole of the moving knife and the position of the line hole of the fixed knife also change.

In this embodiment, the air cylinder uses air to drive the piston to move, but in the present invention, other fluids can also be used to drive the piston to and fro.

In addition, in the present embodiment, the knife hole 45 that a pair of lead-out wires of each electronic component are inserted together is set on the moving knife 40, moves back and forth through moving knife 40; curved. However, in the present invention, when the wiring of the printed circuit board or the density of the mounted electronic components is sparse, the knife holes for a pair of lead wires inserted with each electronic component can also be set on the knife, that is, on the movable knife. On the above, through the reciprocating movement of the moving knife, while cutting the lead-out wire, the lead-out wire is bent in the opposite direction.

In addition, in this embodiment, the movable knife 40 moves back and forth and cuts off one lead-out wire respectively; but in the present invention, it can also be used to cut the lead-out wire by moving once.

10 device body

20 cylinders

21 strokes

24 Cam plate (cam part)

30 inclined board

31 guide plate

40 mobile knife (knife piece)

45 knife hole (through hole)

45a blade

50 fixed knife (knife)

71 printed circuit board

73 electronic components

74 leads

Claims (10)

1. An electronic component assembly device for installing electronic components on a printed circuit board, comprising: a guide plate, a fixed knife, a moving knife and a driving mechanism, characterized in that: The guide plate is formed with a receiving hole for receiving and holding the printed circuit board; The fixed knife is arranged on the lower side of the above-mentioned guide plate, forming a plurality of wire holes into which a plurality of lead-out wires are inserted, and a plurality of lead-out wires of the electronic components penetrate and protrude from the above-mentioned printed circuit bottom plate; The movable knife is flat and is arranged between the above-mentioned guide plate and the above-mentioned fixed knife. Multiple knife holes; The driving mechanism makes the above-mentioned movable knife move in parallel 2. The electronic component mounting device according to claim 1, wherein an inclined surface facing the side of the guide plate is formed on the cutting edge of the knife hole, and the lead-out wire is bent through the inclined surface. 3. The electronic component mounting device as claimed in claim 1, wherein said blades are respectively formed at both ends of said knife hole along the moving direction of said movable knife. 4. The electronic component assembly device according to claim 3, wherein said driving mechanism sequentially moves back and forth in two directions, one direction and the other direction along the moving direction of said moving knife, and when moving in one direction, said The blade portion on one side cuts at least one lead-out wire, and when moving in another direction, the blade portion on the other side cuts at least another lead-out wire. 5. The electronic component assembly device as claimed in claim 4, characterized in that: the above-mentioned driving mechanism has a cylinder and a cam mechanism, and the cylinder has a rod that is driven telescopically in the axial direction; Between the knives, the stroke of the rod in either the direction of extension or the direction of retraction is converted into the reciprocating movement of the moving knife. 6. The electronic component assembly device according to claim 5, characterized in that: said cam mechanism has a cam plate and a connecting pin, and a cam groove extending obliquely to the telescoping direction of said rod is provided on said cam plate, and said The moving knife is connected; said pin is inserted into this cam groove and connected with said rod. 7. The electronic component assembly device according to claim 1, characterized in that: the above-mentioned driving mechanism has a cylinder and a cam mechanism, and the cylinder has a rod that is driven telescopically in the axial direction; Between the knives, the stroke of the rod in either the direction of extension or the direction of retraction is converted into the reciprocating movement of the moving knife. 8. The electronic component assembly device as claimed in claim 7, wherein said cam mechanism has a cam plate and a connecting pin, and a cam groove extending obliquely to the telescoping direction of said rod is provided on said cam plate, and said The mobile knife is connected; the pin is inserted into the cam groove and connected with the above-mentioned rod. 9. The electronic component mounting device as claimed in claim 1, wherein said guide plate, said fixed knife and said movable knife are fixedly connected to each other, and act as inclined plates capable of being separated from said driving mechanism. 10. The electronic component assembly device according to claim 1, characterized in that: said moving knife is equipped with a connecting part, said connecting part protrudes from said driving mechanism, and can be clutched with a pin driven back and forth by said driving mechanism .

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