JPH10224093A - Electronic parts inserter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a parts inserter having a function for detecting jamming of a lead wire in a die by making a decision that an abnormality has occurred when a lead wire detection signal outputted from a detecting section sustains for longer than a predetermined time. SOLUTION: When the forward end part of a lead wire touches a sensor 23 built in the hole 21 of a die 20, the sensor 23 is conducted electrically to deliver an electric signal to a control section 40. The control section 40 determines the inserted state of parts based on the duration of a signal received from the sensor 23. When the duration is equal to a predetermined time, a decision is made that the parts are inserted normally and a board is shifted to next part inserting position thus continuing the parts inserting operation. When the duration is longer than the predetermined time, a decision is made that the hole 21 of the die 20 is choked with a chip of lead wire, or the like and a signal for interrupting the operation of the parts inserter is delivered from the control section 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component insertion machine for mounting discrete electronic components (hereinafter, referred to as "components") on a printed wiring board (hereinafter, referred to as "substrate"). Regarding the structure.

[0002]

2. Description of the Related Art A conventional component insertion machine will be described with reference to FIG. FIG. 3 is a view showing a main part of a conventional component insertion machine, and FIG.
Is a side view (partially sectional view), and (b) is a plan view. 60
Is a part of the clinch head portion of the component insertion machine, which is composed of a die 70 and a cutter 80, etc., inserts a lead wire of the component into the board, cuts an excess portion of the lead wire portion of the component, and This is a portion where a more protruding lead wire is bent and fixed to the substrate.

A die 70 has a hole 71 into which a lead wire of a component is inserted, and an entrance 72 of the hole 71 serves as a cutting blade. A pipe 77 is connected to a lower portion of the hole 71 for discharging cutting chips from the lead wire. Further, a sensor 73 is incorporated in the hole 71. When the lead wire of the component is inserted into the hole 71, the lead wire comes into contact with the sensor 73 and becomes electrically conductive, so that it is determined that the component is inserted normally, and the component inserting operation is continuously performed. In addition, if the component is not electrically connected even though the component is inserted, the component is determined to be inserted abnormally, and the operation of the component inserter is stopped. The sensor 73 is formed in a cylindrical shape having an inner diameter substantially equal to the diameter of the hole 71 of the die 70 by using an electric conductor material, and the cylindrical shape is connected to a conducting wire 74. Then, a contact signal between the lead wire inserted into the hole and the inside of the cylinder is taken out of the die 70 by the conducting wire 74. Die 70
For the material of the blade portion, a hard metal having high wear resistance or the like is used.

The cutter 80 has a head 81 having a cutting blade and a curved portion, and an entrance 72 (a cutting blade) of a hole 71 of a die 70.
The lower surface 82 (cutting blade portion) of the cutter 80 rotates in the direction of the arrow in a sliding state with the rotation fulcrum 84 as a fulcrum. Then, the lead wire is cut at the entrance 72 of the hole 71 and the lower surface 82 of the cutter 80, and the lead wire protruding from the lower surface of the substrate on the upper surface 83 of the cutter 80 is bent to fix the component to the substrate. Cutter 8
As the material of the blade portion 0, a cemented carbide or the like having high wear resistance is used.

Next, the operation of inserting a component will be described. When the board is transferred to a predetermined position by a transfer device (not shown), the board is transferred to an X, Y table (not shown) and the component insertion hole of the board is moved to the component insertion position (clinch head portion). In this state, the clinch head 60 rises from below the substrate to the lower surface of the substrate, and the component insertion hole of the substrate into which the component is to be inserted coincides with the hole 71 of the die 70.
Next, an insertion head holding parts from above (not shown)
Is lowered, and the lead wire of the component is inserted into the component insertion hole of the board. Next, the cutter 80 is rotated in the direction of the arrow to cut off an excess portion at the end of the lead wire of the component, and at the same time, the portion protruding from the lower surface of the substrate is bent to fix the component to the substrate.

At this time, when the tip of the lead wire comes into contact with the sensor 73 incorporated in the hole 71 of the die 70,
Is electrically connected, it is determined that the component has been properly inserted into the hole 71 of the die 70, the board is moved to the next component insertion position, and the component insertion operation is continuously performed. If the insertion head is lowered and the insertion operation is performed, the sensor 73 is not electrically connected (for example,
If the insertion head drops the component and the component cannot be inserted into the board, if the tip of the lead wire hits the top surface of the board and cannot be inserted into the component insertion hole of the board, or if one of the lead wires inserts the component into the board In such a case, for example, when the sensor cannot be inserted into the hole, the sensor does not become conductive, so that it is determined that the component is abnormally inserted, and the operation of the component inserter is stopped.

[0007]

However, in the above-described component insertion machine, the die is only determined by the presence or absence of electrical conduction due to the contact of the lead wire of the component with the sensor 73 incorporated in the hole 71 of the die 70. It is checked whether or not the lead wire of the component has been properly inserted into the hole 71 of 70. However, when cutting holes or the like of the lead wire are clogged in the hole 71 of the die 70, the lead wire is always in an electrically conductive state, and the lead wire is normally inserted regardless of an insertion error in which the lead wire is not inserted into the die hole. It is recognized as inserted. As a result, the component insertion operation is continuously performed without stopping the component insertion machine. Therefore, there is a possibility that the component may flow out to the next process in a state of insertion error.

Accordingly, an object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide a component insertion machine having a function of detecting when a lead wire is clogged in a die.

[0009]

According to the present invention, there is provided an electronic component insertion machine for mounting discrete electronic components on a printed wiring board, wherein the discrete electronic component is provided below the printed wiring board. A die having an insertion portion into which the lead wire is inserted, a cutter having a blade portion that slides on the upper surface of the die and cuts the lead wire, and the lead wire provided inside the insertion portion. A detection unit that detects that the lead wire has been inserted into the insertion unit, and a determination unit that determines that there is an abnormality when the detection signal of the lead wire output from the detection unit continues for a predetermined time or more. It is assumed that.

[0010] Further, there is provided a stop means for stopping the electronic component insertion machine when the judgment means judges that there is an abnormality.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIGS. 1A and 1B show a main part of a component insertion machine according to an embodiment of the present invention, wherein FIG. 1A is a side view (partially sectional view), and FIG. 1B is a plan view. 2A and 2B are views showing a main part of a component mounting process of the component inserter according to one embodiment of the present invention, wherein FIG. 2A is a view showing an inserted state, FIG. 2B is a sectional view showing a state immediately before cutting a lead wire,
(C) is a sectional view showing component mounting.

Reference numeral 10 denotes a part of the clinch head of the component insertion machine, which includes the die 20, the cutter 30, the control unit 40, and the like. An unnecessary portion of the 56 portion is cut, and the lead wire 56 protruding from the lower surface 52 of the substrate 50 is bent and fixed to the substrate 50. The die 20 has a hole 21 into which the lead wire 56 of the component 55 is inserted, and the entrance 22 of the hole 21 serves as a cutting blade. The lower portion of the hole 21 is connected to a pipe 25 for discharging cutting chips from the lead wire 56. Further, a sensor 23 is incorporated in the hole 21. The sensor 23 has a cylindrical shape having an inside diameter substantially the same as the diameter of the hole 21 of the die 20. The tube is connected to a conductor 24, a contact signal is taken out of the die 20 by the conductor 24, and connected to the controller 40. . The sensor 23 is formed in a cylindrical shape having an inner diameter substantially equal to the hole diameter of the hole 21 of the die 20 using an electric conductor material, and the tube is connected to a conductor 24. And
A contact signal between the lead wire 56 inserted into the hole 21 and the inside of the cylinder is taken out of the die 20 through the conductive wire 24 and the control unit 4
Connected to 0. Note that the sensor 23 has the component 5 in the hole 21.
When the lead wire 56 of No. 5 is inserted, the lead wire 56 comes into contact with the sensor 23, becomes electrically conductive, and transmits an electric signal to the control unit 40. As a material of the blade portion of the die 20, a hard metal having high wear resistance or the like is used. As a material for the blade portion of the die 70, a cemented carbide or the like having high wear resistance is used.

The cutter 30 has a head 31 having a cutting blade and a curved portion, and an entrance 22 (a cutting blade portion) of a hole 21 of a die 20.
The lower surface 32 (cutting blade portion) of the cutter 30 rotates in the direction of the arrow in a sliding state with the rotation fulcrum 34 as a fulcrum. The lead wire 5 is formed between the entrance 22 of the hole 21 and the lower surface 32 of the cutter 30.
6 is cut and the lower surface 5 of the substrate 50 is
The lead wire 56 protruding from 2 is bent to fix the component 55 to the substrate 50. As a material of the blade portion of the cutter 30, a hard metal having high wear resistance or the like is used.

The control unit 40 is connected to the sensor 23, receives an electrical signal from the sensor 23, and determines the insertion state of the component 55 based on the length of the signal. If the received signal is a signal of a predetermined length range, the control unit 40
Determines that the lead wire 56 of the component 55 has been normally inserted into the hole 21 of the die 20, and the insertion of the component 55 is continued. If the signal continues longer than the predetermined signal length, it is determined that the cutting waste of the lead wire 56 is clogged in the die 20, and a stop signal is output from the control unit 40 to the operating unit, and the component insertion machine is output. Stop the operation of. Also, despite the insertion head being lowered and the component insertion operation being performed, the sensor 2
When the electrical signal is not received from 3, the component 55 is determined to be abnormally inserted, and the control unit 40 issues a stop signal to stop the operation of the component inserter.

Next, the operation of inserting a component will be described. Substrate 5
When 0 is transferred to a predetermined position by a transfer device (not shown), the board 50 is transferred to an X, Y table (not shown), and the component insertion hole 51 of the board 50 is inserted into a component insertion position (clinch head portion). Move to In this state, the clinch head unit 10 rises from below the substrate 50 to the lower surface 52 of the substrate 50, and the component insertion hole 51 of the substrate 50 into which the component 55 is to be inserted coincides with the hole 21 of the die 20. Next, the insertion head (not shown) holding the component 55 descends from above, and inserts the lead wire 56 of the component 55 into the component insertion hole 51 of the board 50 (FIG. 2A). Next, the cutter 30 is rotated in the direction of the arrow to cut off an excess portion at the end of the lead wire 56 of the component 55, and at the same time, a portion protruding from the lower surface 52 of the substrate 50 is bent at the upper surface 33 (FIG. 2C). The component 55 is fixed to 50.

At this time, the tip of the lead wire 56 contacts the sensor 23 incorporated in the hole 21 of the die 20 (FIG. 2).
b) Then, the sensor 23 becomes electrically conductive and transmits an electrical signal to the control unit 40. Next, the control unit 40 determines the insertion state of the component 55 based on the length of the signal received from the sensor 23. If the length of the signal is a predetermined time, it is determined that the component 55 has been inserted normally, and the board 50 is moved to the next component insertion position, and the operation of inserting the component 55 is continued. If the length of the signal continues for a predetermined time or more, the lead wire 56 is inserted into the hole 21 of the die 20.
It is determined that cutting chips such as are clogged, and a stop signal is issued from the control unit 40 to stop the operation of the component insertion machine. If the sensor 23 does not become electrically conductive despite the insertion head being lowered and performing the insertion operation (for example, when the insertion head drops the component 55 and the component 55 cannot be inserted into the substrate 50). , The end of the lead wire 56 is
(For example, when one of the lead wires 56 could not be inserted into the component insertion hole 51) when the electric signal is transmitted from the sensor 23 to the control unit 40. Is not sent. Therefore, since the control unit 40 cannot receive the signal from the sensor 23, it is determined that the component 55 is abnormally inserted, and the operation of the component insertion machine is stopped.

As described above, according to the present embodiment, the control unit 40 determines the insertion state of the component 55 based on the length of the electrical signal (conduction signal) received from the sensor 23. When the signal continues for a predetermined time or more, the die 2
It is determined that the cutting waste such as the lead wire 56 is clogged in 0, and the control unit 40 issues a stop signal to the component insertion machine to stop the component insertion machine. Therefore, it is possible to prevent the outflow of the board 50 on which the insertion error component is mounted.

[0018]

As described above, according to the present invention, the control unit receives the signal from the sensor and determines the insertion state of the component. Then, since the operation of the component insertion machine is continued or stopped based on the determination, it is possible to prevent the outflow of the board on which the incorrectly inserted component is mounted.

[Brief description of the drawings]

FIG. 1 is a view showing a main part of a component insertion machine according to one embodiment of the present invention, where (a) is a side view (partially sectional view) and (b) is a plan view.

FIGS. 2A and 2B are views showing a main part of a component mounting process of the component inserter according to one embodiment of the present invention, wherein FIG. 2A is a view showing an inserted state, FIG. (C) is a sectional view showing component mounting.

3A and 3B are diagrams showing a main part of a conventional component insertion machine, where FIG. 3A is a side view (partially sectional view), and FIG. 3B is a plan view.

[Explanation of symbols]

 10 clinch head section 20 die 21 hole 22 inlet 23 sensor 24 lead wire 25 Pipe 30... Cutter 31... Head 32, 52... Lower surface (cutting blade portion) 33... Upper surface (lead wire curved portion) 40. .... Board 51 ... Component insertion hole 55 ... Component 56 ... Lead wire

Claims (2)

[Claims] 1. An electronic component insertion machine for mounting a discrete electronic component on a printed wiring board, comprising: a die provided below the printed wiring board and formed with an insertion portion into which a lead wire of the discrete electronic component is inserted; A cutter formed with a blade portion that slides on the upper surface of the die and cuts the lead wire, and a detection portion provided inside the insertion portion and detecting that the lead wire is inserted into the insertion portion, An electronic component insertion machine comprising: a determination unit that determines that an abnormality has occurred when the detection signal of the lead wire output from the detection unit continues for a predetermined time or more. 2. The electronic component inserter according to claim 1, further comprising a stop unit that stops the electronic component inserter when the determination unit determines that there is an abnormality.