JPH028669Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The invention relates to an electronic component clinching device, and in particular,
The present invention relates to an electronic component clinching device that is capable of clinching lead wires of electronic components including irregularly shaped components inserted into a board with a single device.

[Background Art] Conventionally, in the process of assembling electrical equipment, clinching of electronic components to a board is often performed by a clinch unit that is integrated with the electronic component insertion unit in a large insert machine. There is. This insert machine is mainly used for assembling a large number of identically shaped parts onto the same board. On the other hand, in the case of odd-shaped parts that rely on robot or manual insertion, there is no conventional device that can clinch the parts by itself, and the clinching work has to be done manually using tools.

However, this manual clinching process has the disadvantage that it is time-consuming and labor-intensive, and that variations are likely to occur when parts are attached.

[Purpose of the invention] Taking the above facts into consideration, the present invention is capable of lifting and lowering the clinch claw and clinching operation by itself, and saves labor in clinching work by combining it with an assembly line of automatic insertion by a robot or the like or manual insertion. An object of the present invention is to obtain an electronic component clinching device that can shorten working time and improve reliability.

[Structure of the invention] In the electronic component clinch device according to the invention, an outer plunger is fitted into a cylinder so as to be slidable in the vertical direction, and one end of the outer plunger is extended outside the cylinder to be equipped with a clinch head. A holder to which a clinch claw is fixed is rotatably supported on the head, and an inner plunger is fitted to an outer plunger so as to be slidable in the vertical direction, and the tip of the inner plunger contacts the holder to rotate the clinch claw. A cam that performs dynamic energization is installed, and working fluid is introduced into and out of the cylinder chamber and the outer plunger chamber in a predetermined manner through ports provided in the cylinder and outer plunger, thereby moving the clinch claws in the vertical direction and in the meshing direction. It is becoming more and more common for people to do this.

[Example of the invention] Figures 2 and 3 show the state in which the electronic component clinch device (hereinafter simply referred to as the "clinch device") according to the present invention is actually installed in an automatic insertion line and a manual insertion line, respectively. has been done. In FIG. 2, a conveyor device 12 for conveying the substrate 10 and a table 14 are arranged in the left-right direction, with a first station 16 on the left side of the figure and a second station 1 on the right side.
7 is provided. The first station 16 is
It is a combination of an automatic machine and a clinch device, and is mounted via a base 22 to an automatic insertion machine 18 installed on a table 14 and a predetermined location on a bracket 20 protruding from the lower end of the conveyor device 12 by the table 14. A clinch device 24 is provided.

The automatic insertion machine 18 is equipped with an arm 26 at each joint having a hand 25 at the tip. The substrate detection sensor 28 detects that the substrate 10 is located at the first station 1.
When it is detected that the board 10 has been transferred to the parts feeder 28, the positioning device 29 positions the board 10, and the automatic inserter 18 operates to move the arm 26 and hand 25 to remove the work (electronic component) 30 from the parts feeder 28. Take it out and insert it into a predetermined position on the board 10. At the same time as the workpiece 30 is inserted, the clinch device 24 on the lower side of the board 10 is raised, and the lead wire (see FIG. 4) of the workpiece 30 protruding downward from the board 10 is bent and clinched to the board 10 using the hand 25 as a backing. do. As a result, the workpiece 30 is automatically inserted and clinched at the same time.

The second station 17 performs clinching separately after automatic insertion in the previous process, and includes a holding device 34 installed on the table 14 and two clinch devices 24 installed on the bracket 20 below the conveyor device 12. ing. The holding device 34 is attached to the support column 3
6 is provided with a holding shaft 40 via two sets of arms 38, respectively, so as to be movable up and down. Each arm 38 is manually operated in advance so that the holding shaft 40 is connected to the substrate 1.
It is adjusted to be at a predetermined location above 0. The clinch device 24 is arranged vertically below the holding shaft 40. When the substrate detection sensor 28 detects that the substrate 10 after inserting a plurality of workpieces 30 has been transferred to the second station 17, the positioning device 29 fixes the substrate 10 and the holding shaft 40 descends to move each workpiece. 30 is pressed against the substrate 10 to hold it. At the same time as the holding shaft 40 descends, each clinching device 24 rises and the workpiece 3
Perform a 0 clinch. By providing a plurality of clinching devices 24 in this way, it is possible to clinch a plurality of workpieces 30 at once.

In FIG. 3, a holding device 34 installed on the table 14 above and below with the substrate 10 in between and a clinch device 24 installed on the bracket 20 are provided at the process position after manual insertion of the conveyor device 12 forming the manual insertion line. When the board detection sensor 28 detects that the board 10 after manual electronic component insertion has been transferred to the clinch station, the positioning device 2
9 fixes the substrate 10, the holding shaft 40 descends to hold the workpiece 30, and at the same time the clinch device 24 ascends to perform clinching. By equipping the manual insertion line with the clinch device 24, it is possible to reduce the labor and time required for electronic component assembly work by half.

In FIGS. 2 and 3, the clinch device 24
When changing the clinch coordinates, a single unit (unit) is attached to multiple locations on the base 22 fixed to the bracket 20.
It is now possible to transfer the whole thing.

FIG. 1 is a cross-sectional view of one embodiment of a clinch device 24 in combination with a retention device 34 in a subsequent step of an automatic insertion machine or in a manual insertion line. In the figure, a cylindrical cylinder 42 is fixed onto the base 22 with bolts 44. An outer plunger 46 is installed inside the cylinder 42 so as to be slidable in the vertical direction. This outer plunger 46 is
It consists of an elongated piston part 48 that is in close contact with the inner wall of the cylinder 42 and a rod 50 that extends from the piston part 48 to the upper outer surface of the cylinder 42.

A clinch head 52 is attached to the tip of the rod 50. This clinch head 52 consists of a block-shaped yoke 5 that is integrally attached to the rod 50.
It has 4. A pair of holders 60 are provided on the yoke 54 symmetrically, and each holder 60
A clinch claw 62 is removably fixed to the bolt 63 by a bolt 63. The upper end of the holder 60 is pivotally supported by a shaft 66 formed on the yoke 54, so that the holder 60 can rotate within a vertical plane on the lower end side. A roller 64 is rotatably supported on the inner side of the lower end of the holder 60 . This roller 64 is partially exposed to a cam chamber 65 provided inside the yoke 54. The tips of the clinch claws 62 protrude upward from the yoke 54 and then are bent inward. A compression coil spring 68 is disposed above the shaft 66 of the clinch claw 62 and near the center of the upper end of the yoke 54, so that the tip of the clinch claw 62 is always urged outward. It is becoming more and more like this.

The left clinch claw 62 in FIG.
An L-shaped contact 74 is provided between the yoke 54 and the bolt 63 via the bolt 63, and a U-shaped contact 76 is provided on the yoke 54 in correspondence with this contact 74. The tip of the contact 74 is loosely fitted into a hole 78 bored at the end of the contact 76, and when the left clinch pawl 62 rotates a predetermined angle clockwise, the contact 74,
76 is designed to close. Contacts 74, 76
A clinch confirmation switch 77 is configured.
A support bar 80 is screwed into the center of the upper end of the yoke 54 and fastened with a nut 82. The tip of the support bar 80 is approximately at the same height as the tip of the clinch claw 62.

The outer plunger 46 is formed hollow, and the inner plunger 84 is fitted inside thereof so as to be slidable in the vertical direction. Inner plunger 84
It consists of a short piston portion 86 that is in close contact with the inner wall of the piston portion 48 of the outer plunger 46, and a rod 88 that extends from the piston portion 86 through the rod 50 to the lower end of the clinch head 52. A cam 92 having a slope 90 that contacts the roller 64 is attached to the tip of the rod 88. The cam 92 has a function of converting the vertical movement of the inner plunger 84 into a rotational movement of the holder 60 as a link.

A and B ports 96 and 98 are respectively connected to the lower cylinder chamber 94 at the lower ends of the left and right sides of the cylinder 42.
A C port 100 is provided above the center of the right side, and an E port 102 is provided below. C port 100 is connected to B port 98 by tube 104 . A D port and H ports 106 and 108, which communicate with the upper cylinder chamber 104, are provided at the upper end of the right side and the upper right surface of the cylinder 42, respectively.

On the other hand, F and G ports 114 and 116, which communicate with the outer plunger chamber 110 and the upper outer plunger chamber 112, are provided at the center of the right side and the upper right surface of the outer plunger 46. F port 11
4 communicates with the E port or C port 102 or 100 as the outer plunger 46 moves up and down. The G port 116 communicates with the upper cylinder chamber 104 or the H port 108 as the outer plunger 46 moves up and down.

A holding shaft 40 of a holding device (see FIGS. 2 and 3) 34 is disposed above the clinch device 24 configured as described above, sandwiching the substrate 10 into which the workpiece 30 is inserted. The holding shaft is moved up and down by a workpiece holding cylinder 118 (see FIG. 4).

FIG. 4 shows a D-clinch operation control system of the clinch device 24 and holding device 34 shown in FIG. In FIG. 4, a compressed air source 117 is connected to the P port of a 5-port solenoid valve 120 as a directional valve. The A port of the 5-port solenoid valve 120 is connected in parallel with the A port 96 of the clinch device 24, the upper cylinder chamber (not shown) of the work holding cylinder 118, and the positioning cylinder 122 as the positioning device 29, and the B port is the D port 1 of the clinch device 24
06 and a lower cylinder chamber (not shown) of the work holding cylinder 118, respectively, in parallel via speed control valves 124 and 126. The five-port solenoid valve 120 is switched and controlled by a controller 130 which inputs the detection signal output of a microswitch 128 as a substrate detection sensor and a clinch confirmation switch 77.

Next, the operation of this embodiment will be explained. First, when the substrate 10 with the workpiece 30 inserted therein is conveyed by the conveyor device 12 and arrives at the clinch station, the microswitch 128 detects this and sends a substrate detection signal to the controller 130. The controller 130 is energized by the substrate detection signal and immediately switches the 5-port solenoid valve 120 to the forward direction (the state shown in FIG. 4). Compressed air is supplied to the clinch device 24
is supplied to the A port 96, the upper cylinder chamber of the work holding cylinder 118, and the positioning cylinder 122, and each device operates simultaneously. The positioning cylinder 122 lowers the positioning pin 132 by the action of compressed air and fits into a positioning hole (not shown) drilled at a predetermined location on the board 10, thereby fixing the board 10. The workpiece holding cylinder 118 lowers the holding shaft 40 by the action of compressed air and holds the workpiece 3.
Press and hold 0 (see Figure 6). On this occasion,
Air coming out of the lower cylinder of the work holding cylinder 118 flows out via the speed control valve 126. The holding shaft 40 is lowered at a predetermined speed controlled by the speed control valve 126.

In the clinch device 24, as shown in FIG.
Enter the outer plunger 46 and clinch the head 5
Increase with 2. Some of the air in the upper cylinder chamber 104 escapes from the H port 108, but most of it flows out from the D port 106 via the speed control valve 124, so the outer plunger 4
6 is raised at a predetermined speed.
The lifting stops when the piston portion 48 of the outer plunger 46 comes into contact with the upper wall of the cylinder 42, and at this time, the support bar 80 of the clinch head 52 presses the substrate 10 below the workpiece 30, and the workpiece 30 is held together with the holding shaft 40. to hold. Also,
Clinch claw 62 equipped on clinch head 52
is the lead wire 3 of the workpiece 30 protruding from the substrate 10
2 (see Figure 6).

When the outer plunger 46 stops upward, the C port 100, the F port 114, and the G port 1
16 and H port 108 are in communication state, and A
The compressed air flowing in from the port 96 is supplied to the lower outer plunger chamber 110 via the lower cylinder chamber 94 and the pipe 104, and the inner plunger 84 is raised. Air in the upper outer plunger chamber 112 is discharged to the outside via the G port 116 and the H port 108. When the inner plunger 84 rises, the cam 92 pushes the roller 64 outward. In response to this pressing force, the holder 60 and the clinch claw 70 rotate around the shaft 66 against the compression coil spring 68, and the clinch claw 62 bends the lead wire 32 in the horizontal direction and performs the clinch (Fig. 7). reference).

The contact point 7 is rotated by a predetermined amount of the left clinch claw 62.
4 and 76 are closed, the clinch confirmation switch 77 sends a clinch completion detection signal to the controller 130. The controller 130 is energized by the clinch completion detection signal and immediately switches the 5-port solenoid valve 120 in the opposite direction, and this time supplies compressed air to the D port 106 of the clinch device 24 and the lower cylinder chamber of the work holding cylinder 118. , air is discharged from the A port 96 of the clinch device 24, the upper cylinder chamber of the work holding cylinder 118, and the positioning cylinder 112.

As a result, the positioning cylinder 112 uses the tensile force of the tension spring 134 to cause the positioning pin 13 to
2 rises. In addition, the work holding cylinder 11
8 raises the holding shaft 40 at high speed by the action of compressed air. In the clinch device 24, first, the upper wall of the cylinder 42 and the piston part 48 are connected from the D port 106.
Since compressed air is supplied to the recess 136 between the outer plunger 46 and the outer plunger 46, the outer plunger 46 starts to descend. Air in the lower cylinder chamber 94 is exhausted from the A port 96. At this time, if a space is created above the piston portion 48 for the upper cylinder 104, it will communicate with the upper outer plunger chamber 112 via the G port 116, but the F port 114 of the lower outer plunger chamber 110 will be connected to the side wall of the cylinder 42. Since the inner plunger 84 is closed, the inner plunger 84 remains in the upper position within the outer plunger 46. Therefore, the clinch claws 62 maintain the clinch state for a while. This is done to prevent the lead wire from opening again due to the spring back of the lead wire 32 and the friction between the clinch claw 62 and the lead wire 32 if the clinch claw 62 opens immediately after the clinching is completed.

When the outer plunger 46 comes into contact with the lower part of the cylinder 42, the downward movement is stopped. At this time, F port 1
14 and E port 102 communicate, and G port 116
The inner plunger 84 is lowered by the action of compressed air supplied to the upper outer plunger chamber 112 through the upper outer plunger chamber 112 . As the inner plunger 84 descends, the cam 92 descends and is biased by the compression coil spring 68, causing the clinch claw 62 and holder 60 to rotate back to their original positions (see FIG. 8).

The controller 130 switches the 5-port solenoid valve 120 to the neutral position when the clinch device 24, work holding cylinder 118, and positioning cylinder 122 have all returned to their original positions.

In this way, in this embodiment, the transition from the raising operation of the clinch claw to the clinch operation is performed by switching the communication positions of the ports provided on the cylinder and the outer plunger, which simplifies the configuration of the clinch device control system. . Further, even after the clinching is completed, the clinch claws maintain the clinching state for a while, so that the lead wires are not likely to open again, and the clinching work can be performed reliably.

Although the clinch claws in the above embodiment are configured to bend the lead wires of the workpiece inward, the present invention is not limited to this in any way, and the clinch claws are configured to bend the lead wires outward. The pawl and its operating mechanism may also be configured.

[Effect of the invention] As explained above, in the electronic component clinching device according to the invention, the outer plunger is fitted into the cylinder so as to be slidable in the vertical direction, and the clinch claw is rotatably attached to the tip of the outer plunger. The inner plunger is fitted to the plunger so as to be slidable in the vertical direction, a cam for rotationally biasing the clinch claw is fixed to the tip of the inner plunger, and the outer plunger and the inner plunger are raised and lowered in a predetermined sequence to clinch. Since the raising and lowering of the claws and the clinching operation can be performed within a single unit, it can be combined with an automatic insertion machine such as a robot to simultaneously insert and clinch electronic components, including large irregularly shaped parts, into a board. By installing multiple clinching devices at any position in the next process of the manual insertion line, it is possible to clinch multiple electronic components at once, significantly shortening the work time.

Further, since the clinch device can be transferred as a single unit, the clinch coordinates can be easily changed, and furthermore, the range of clinch work can be expanded by attaching it to an automatic positioning device such as an X-Y table.

Further, electronic components including odd-shaped components attached to the board by automatic or manual insertion can be automatically clinched, so clinching work can be omitted and reliability can be improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an electronic component clinch device according to an embodiment of the present invention, FIG. 2 is a perspective view showing the electronic component clinch device of FIG. 1 in use in combination with an automatic insertion line, Figure 3 is a side view showing how the electronic component clinch device shown in Figure 1 is used in combination with a manual insertion line, Figure 4 is a system diagram showing the control system for the entire clinch operation, and Figures 5 to 8 are 2 is an explanatory diagram of the operation of the clinch device shown in FIG. 1. FIG. 24...Clinch device, 42...Cylinder, 4
6...Outer plunger, 52...Clinch head, 60...Holder, 70...Clinch claw, 84
...Inner plunger, 92...cam.

Claims (1)

[Scope of utility model registration request] An outer plunger is fitted into the cylinder so as to be slidable in the vertical direction, one end of the outer plunger is extended outside the cylinder to equip a clinch head, and a holder to which a clinch claw is fixed is rotatably attached to the clinch head. an inner plunger is fitted to the outer plunger so as to be slidable in the vertical direction, and a cam is attached to the tip of the inner plunger to abut the holder and bias the clinch claw to rotate; A working fluid is introduced into and out of the cylinder and the outer plunger in a predetermined manner through ports provided in the cylinder and the outer plunger, and the clinch head is moved in the vertical direction and the clinch claws are moved in the engagement direction. Characteristic electronic component clinching device.