JP2001004496A - Inspecting method of pressure-receiving member and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inspecting method of a pressure receiving member and an apparatus therefor which enable pressing of the pressure receiving member at a prescribed pressure without being affected by the pressure fluctuation of a pressure fluid and also accurate control of a pressing force even when the pressure is small and thus enable correct execution of inspection. SOLUTION: When a support member 114 is displaced downward by making a cylinder 100 drive, a pressing member 126 comes into contact with a switch 12, so as to give it the weight thereof, and the switch 12 is pressed with a pressure corresponding to this weight. On the other hand, the support member 114 works only to support a shaft 128 so that it extends in the vertical direction, and the pressure and weight of the support member 114 are not given to the switch 12. The switch 12 is pressed by the pressing member 126 and moves to close and a portable telephone 10 outputs to a determining device 18 a signal showing that the switch 12 has moved to close. Therefore the determining device 18 can detect that the switch 12 operates normally.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for inspecting a pressure receiving member for inspecting a pressure receiving member such as a switch pressed with a predetermined pressure.

[0002]

2. Description of the Related Art Conventionally, an inspection apparatus 1 as shown in FIG. 7 has been used for inspecting the operation of a switch as a pressure receiving member in a production line of, for example, a cellular phone. The inspection apparatus 1 includes three cylinders 3a to 3c arranged above a mobile phone 2 serving as a work and parallel to each other. Each of the cylinders 3a to 3c can be displaced in a horizontal direction by an X-axis direction displacement mechanism 4. . Each cylinder 3
The cylinder rods 5a to 5c of a to 3c can be displaced toward a plurality of switches 6 of the mobile phone 2. Pressing portions 8a to 8c are provided at ends of the cylinder rods 5a to 5c via support members 7a to 7c. Provided. Each pressing part 8a
The interval of ８8c approximately matches the interval of the switch 6.

When the switch 6 is inspected by the inspection apparatus 1, the cylinder 3a is moved by the X-axis direction displacement mechanism 4.
3c are arranged above three switches 6 among the plurality of switches 6 of the mobile phone 2. Next, cylinders 3a-3
By driving the switch c to displace the cylinder rods 5a to 5c toward the switch 6, the distal ends of the pressing portions 8a to 8c press the switch 6 with a predetermined pressure. Switch 6
Is operating normally, the switch 6 closes when the switch 6 is pressed, and the mobile phone 2 outputs a signal indicating this to the determination device 9 connected to the mobile phone 2. On the other hand, for example,
If the switch 6 has a defect such as a disconnection, the mobile phone 2 cannot output a signal indicating that the switch 6 has closed to the determination device 9 even if the switch 6 is pressed. The judging device 9 can judge whether the switch 6 is operating normally based on the presence or absence of this signal.

In this case, it is possible that the switch 6 closes when pressed with a strong pressure but does not close with an appropriate pressure. Therefore, the primary pressures of the cylinders 3a to 3c are adjusted so that the pressing portions 8a to 8c press the switch 6 with a small pressure (for example, 0.03 MPa).

[0005]

However, in the inspection apparatus 1 according to the prior art, when the pressure of the pressurized fluid such as compressed air for driving the cylinders 3a to 3c fluctuates, the pressing portions 8a to 8c are switched. There has been a problem that the pressure for pressing 6 fluctuates, making it impossible to perform an accurate inspection. Further, the pressure for pressing the switch 6 is small, and it is difficult to accurately reduce the pressure on the primary side.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is capable of pressing a pressure receiving member at a constant pressure without being affected by pressure fluctuations of a pressure fluid, and accurately even when a small pressure is applied. It is an object of the present invention to provide a pressure receiving member inspection method and apparatus capable of controlling a pressing force and performing an inspection accurately.

[0007]

In this section, for ease of understanding, description will be made with reference numerals in the accompanying drawings. Therefore,
It should not be construed that the present invention is limited to the contents described in this section and the reference numerals.

According to the method of the present invention, the pressing member (12) which can be displaced in the vertical direction with respect to the supporting member (114), and whose displacement range is restricted by the supporting member.
6) is replaced with a pressure receiving member (12) provided on the work (10).
The pressing member is moved up relative to the supporting member by lowering the supporting member and bringing the pressing member into contact with the pressure receiving member, so that the weight and the weight of the supporting member are reduced. Applying a pressure to the pressure receiving member and pressing the pressure receiving member without applying pressure to the pressure receiving member.

According to the present invention, since the pressure receiving member is pressed by the weight of the pressing member, the pressure receiving member can be pressed at a constant pressure without being affected by the pressure of the compressed air.

In this case, when the step of disposing the pressing member above the pressure receiving member and the step of pressing the pressure receiving member are sequentially performed on a plurality of pressure receiving members provided on the work, one Since a plurality of pressure receiving members are inspected by the pressing member, the inspection can be performed under the same conditions without variation of the pressing members, which is preferable.

The step of disposing the pressing member above the pressure receiving member may include the step of displacing the support member in an X-Y displacement mechanism (3) capable of displacing the support member in horizontal and orthogonal X and Y directions.
The step of displacing 4) is preferable because the inspection can be automatically performed on a plurality of pressure receiving members.

Further, the apparatus of the present invention comprises a support member (114) displaceable in a vertical direction, a drive mechanism (100) for driving the support member in a vertical direction, and a drive mechanism (100) vertically movable with respect to the support member. A pressing member (126), which is displaceable in the direction, and whose downward displacement range is regulated by the supporting member, wherein the supporting member moves down under the driving action of the driving mechanism to lower the pressing member. The weight is applied to the pressure receiving member provided on the work, whereby the pressure receiving member is pressed.

According to the present invention, when the supporting member is lowered, the pressing member comes into contact with the pressure receiving member. When the supporting member is further lowered, the pressing member is displaceable with respect to the supporting member. Therefore, only the supporting member is lowered while the pressing member is supported by the pressure receiving member, and the weight and pressure of the supporting member are applied to the pressure receiving member. Without being performed, only the weight of the pressing member is applied to the pressure receiving member. Therefore, the pressure receiving member can be pressed with a constant pressure without being affected by the pressure of the pressure fluid.

In this case, the weight (148) is applied to the pressing member.
When the is provided detachably, the pressure applied to the pressure receiving member can be changed by changing the weight of the weight, which is preferable.

The pressing member is provided with a shaft (128) extending in a vertical direction, and the pressing member is supported by inserting the shaft into a hole (138) formed in the supporting member. It is preferable that the inspection device (30) be configured so as to be displaceable relative to the member, since the inspection device (30) can have a simple configuration.

Further, the driving mechanism (100) has an XY displaceable in X and Y directions which are horizontal and orthogonal to each other.
When provided in the displacement mechanism (34), the pressing members can be sequentially arranged on the plurality of pressure receiving members provided on the work under the displacement action of the XY displacement mechanism to press the respective pressure receiving members. Is more preferable.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a method for inspecting a pressure-receiving member according to the present invention will be described in detail with reference to the accompanying drawings.

First, a mobile phone 10 which is a work to be inspected by the pressure receiving member inspection apparatus 30 according to the present embodiment.
Will be described with reference to FIG.

The mobile phone 10 is formed in a substantially rectangular shape, and on one surface thereof, a display 14 and a plurality of pressure receiving members, which are switches 12 to be inspected, are provided. The switches 12 are arranged in three rows along the longitudinal direction of the mobile phone 10. One end of the mobile phone 10 is connected to a determination device 18 via a cable 16.

Next, a pressure receiving member inspection apparatus 30 for inspecting the mobile phone 10 according to the present embodiment will be described with reference to FIG.

The inspection apparatus 30 has a long base 32, and an XY displacement mechanism 34 is provided above the base 32. The XY displacement mechanism 34 has plate-shaped members 36a, 36b having an L-shaped cross section extending along the longitudinal direction of the base 32 (see FIGS. 2 and 3).
b has guide rails 38a, 38 along its longitudinal direction.
b is fixed.

Substantially L-shaped support plates 40a and 40b are fixed to both ends of one plate-like member 36a.
Pulleys 42a and 42b having a plurality of teeth formed at equal intervals on the outer circumference are rotatably provided in the gap between the support plates 40a and 40b. Between the pulleys 42a and 42b, a timing belt 44 having a plurality of teeth formed on the inner peripheral surface to mesh with the teeth of the pulleys 42a and 42b is wound. A stepping motor 46 is disposed above one support plate 40a, and one pulley 42a is
6 is driven to rotate.

A part of the orbiting timing belt 44 is
As shown in FIG. 3, one of the guide rails 3 is held by one of the holding members 50a and 50b.
A guide block 52a slidably engaged with 8a is fixed. The holding members 50a and 50b are fixed to a lower portion of a displacement plate 54 having a substantially L-shaped cross section, and the other guide rail 38 is attached to the displacement plate 54 via an L-shaped mounting member 55.
A guide block 52b slidably engaged with the guide block 52b is provided. Therefore, the displacement plate 54 is displaced in the direction of the arrow X with the displacement of the timing belt 44.

At one end of the displacement plate 54, a plate-shaped position detecting member 56 projecting outward from the plate-like member 36b and bent so as to extend downward in the vertical direction is fixed, and the lower end of the position detecting member 56 is fixed. The part is freely insertable between the light emitting part 60a and the light receiving part 60b of the plurality of position detection sensors 58 fixed to the side part of the base 32.

A support plate 62 extending horizontally is fixed to the other end of the displacement plate 54, and a stepping motor 64 is fixed to one end of the support plate 62. A pulley 68 having a plurality of teeth formed at equal intervals on the outer circumference is provided on a rotation shaft 66 of the stepping motor 64. On the other hand, bearing members 70a and 70b are fixed to the other end of the support plate 62 so as to face each other, and a shaft member 72 is provided between the bearing members 70a and 70b.
A pulley 74 having a plurality of teeth formed on an outer periphery thereof is rotatably provided through the pulley 74. Between the pulleys 68 and 74, a timing belt 78 having a plurality of teeth formed on the inner peripheral surface to mesh with the teeth of the pulleys 68 and 74 is wound.

Guide rods 80a and 80b are provided on the support plate 62 along its longitudinal direction by a plurality of mounting members 82 so as to be parallel to each other.
As shown in FIG. 4, the guide blocks 84a, 84b
Slidably inserted into Guide blocks 84a, 84b
, A displacement plate 88 is fixed. A clamping member 90a is fixed to the displacement plate 88, and the clamping member 90a is fixed to the clamping member 90a.
b is provided, and a part of the orbiting timing belt 78 is held by the holding members 90a and 90b. Therefore,
The displacement plate 88 is displaced in the direction of the arrow Y (the depth direction in FIG. 4) with the displacement of the timing belt 78.

A plate-like position detecting member 92 extending in the horizontal direction is fixed to the upper and lower parts of the displacement plate 88, and the end of the position detecting member 92 is fixed to a plurality of upper and lower parts of the support plate 62. It can be freely inserted between the light emitting unit 96a and the light receiving unit 96b of the position detection sensor 94.

The displacement plate 88 has a cylinder 1 as a drive mechanism.
00 is fixed. A displacement member 106 is fixed to the cylinder rods 102a and 102b of the cylinder 100 via a mounting member 104. A concave portion 108 in the displacement member 106
On the other hand, on the side surface of the cylinder 100, a convex portion 110 slidably engaging with a wall portion forming the concave portion 108.
Is formed, so that the concave portion 108 and the convex portion 110 perform a guiding action (see FIG. 2).

The support member 11 extending in the horizontal direction is provided on the displacement member 106 via a plate member 112 extending in the vertical direction.
4 is fixed. As shown in FIG. 3, the support member 114 has a hole 116 formed therein.
18 is fitted. The upper part of the bush 118 has a flange 1
20 is formed, and the bush 118 is prevented from coming off by the flange portion 120 abutting on the upper portion of the support member 114. A pressing member 126 is formed in the hole 122 of the bush 118, and a shaft 128 extending in the vertical direction is movably inserted through the shaft 128. A contact portion 132 is provided at the lower end of the shaft 128 via a flange portion 130. On the other hand, the shaft 128 is provided with a urethane washer 134 located above the support member 114 for absorbing impact. The shaft 128 has a urethane washer 134
The collar members 136a and 136b are provided on the upper portion of the shaft 128 and on the upper end side of the shaft 128, respectively. Collar member 136
As shown in FIG. 5, each of the screws a and 136b has a substantially circular shape having a hole 138 and a slit 140 formed in a part thereof.
2 is screwed. For this reason, the shaft 12 is inserted into the hole 138.
8, the diameter of the hole 138 is slightly reduced, and the shaft 128 is tightened on the inner peripheral surface of the hole 138, so that the collar members 136a and 136b are fixed to the shaft 128. When the shaft 128 is displaced downward, the collar member 136a moves the urethane washer 1
34, which engages the flange 120 of the bush 118, and thus the shaft 128 relative to the support member 114.
Is restricted.

A plurality of weights 148 are provided between the collar members 136a and 136b via urethane washers 146a and 146b. The weight of the weight 148 is set so that the entire pressing member 126 has a predetermined weight so that the pressing member 126 presses the switch 12 of the mobile phone 10 with an appropriate pressure.

Inspection device 3 for pressure receiving member according to the present embodiment
0 is basically configured as described above,
Next, a method of using the inspection device 30 will be described with reference to a flowchart shown in FIG. 6 in relation to the inspection method of the pressure receiving member according to the present embodiment.

The mobile phone 10 is previously arranged at a predetermined position near the inspection device 30 (see FIG. 1).

First, the contact portion 132 of the pressing member 126 is arranged above any one of the plurality of switches 12 provided on the mobile phone 10 by the XY displacement mechanism 34 (step S1). More specifically, the stepping motor 4
6, the pulley 42a rotates and the timing belt 44 moves around. Therefore, the displacement plate 54 is displaced in the arrow X direction together with the timing belt 44. The position of the displacement plate 54 is determined by the position detection member 56
8 is inserted between the light emitting unit 60a and the light receiving unit 60b, and is detected by the position detection member 56 blocking light emitted from the light emitting unit 60a and emitted to the light receiving unit 60b.

When the stepping motor 64 is driven, the pulley 68 rotates and the timing belt 78 moves around, and the displacement plate 88 is displaced in the arrow Y direction. Displacement plate 8
8, the position detecting member 92 is inserted between the light emitting portion 96a and the light receiving portion 96b of the position detecting sensor 94, and emits light emitted from the light emitting portion 96a and irradiated to the light receiving portion 96b. Is detected by blocking.

In this manner, the pressing member 126 is moved to the direction indicated by the arrow X,
When the pressing member 126 is displaced in the Y direction and is displaced above any one of the plurality of switches 12 provided on the mobile phone 10, the stepping motors 46 and 64 are stopped.

Next, the support member 114 is displaced downward by driving the cylinder 100 (step S2). For this reason, the pressing member 126 is displaced toward the switch 12, and
The end of the contact portion 132 contacts the switch 12.

When the support member 114 is further lowered, the weight of the pressing member 126 is applied to the switch 12, and the switch 12 is pressed with a pressure corresponding to the weight. At this time, the shaft 128 of the pressing member 126 is
Slides through the hole 122 and rises relatively to the support member 114. That is, the contact portion 132 is
Pressing member 1 including shaft 128 and weight 148 through
26, but the support member 114 only supports the shaft 128 so that the shaft 128 extends in the vertical direction. No weight of 114 is provided. Therefore, the pressure for pressing the switch 12 is not affected by the pressure of the pressurized fluid such as the compressed air for driving the cylinder 100, and the pressure for pressing the switch 12 can be reduced by accurately managing the weight of the pressing member 126. Can be managed accurately.

At this time, the judgment device 18
, The presence or absence of a signal output from the mobile phone 10 via the CPU 10 is determined, and whether or not the switch 12 is operating normally is determined (step S3). That is, when the switch 12 is operating normally, the switch 12 is pressed by the pressing member 126 to close, and the mobile phone 10 sends a signal indicating that the switch 12 has closed to the determination device 18 via the cable 16. Is output. For this reason, the determination device 18 can detect that the switch 12 is operating normally. On the other hand, if the switch 12 has a defect such as a disconnection, for example, even if the switch 12 is pressed, a signal indicating this is not output from the mobile phone 10 to the determination device 18 and the determination device 18
Can detect that the switch 12 is abnormal.

If there is an abnormality in the switch 12, the judging device 18 stores a symbol, a number and the like for specifying the switch 12 (step S4).

After determining whether the switch 12 is normal as described above, the cylinder 100 is driven to raise the pressing member 126 (step S5). For this reason, the contact portion 132 of the pressing member 126 is separated from the switch 12, and
The pressing action of the switch 12 is stopped.

Then, it is determined whether or not all the switches 12 provided on the mobile phone 10 have been inspected (step S6). If not, the process returns to step S1 to return to the XY displacement mechanism 34. , The pressing member 126 is displaced onto the switch 12 for which the inspection has not been completed. And
The switch 12 is inspected in the same manner as described above.

When the inspection of all the switches 12 is completed in step S6, it is determined whether or not all the switches 12 are operating normally (step S7). Is transported to the next step (step S8). On the other hand, in step S7, if any one of the switches 12 is not operating normally,
The symbol, number, and the like that specify the abnormal switch 12 stored in step S4 are displayed on an output unit (not shown) (step S9), and the mobile phone 10 is removed from the manufacturing line (step S10). After the switch 12 displayed in step S9 has been repaired,
It is returned to the production line again.

When the pressure for pressing the switch 12 is changed, for example, when the model of the mobile phone 10 is different, the pressing member 1
What is necessary is just to change the weight of the weight 148 attached to 26.

In the inspection apparatus 30 according to the present embodiment, only the weight of the pressing member 126 is applied to the switch 12, and the pressure of the pressure fluid supplied to the cylinder 100 for displacing the support member 114 is applied to the switch 12. Therefore, the pressure fluctuation of the pressurized fluid does not affect the pressure pressing the switch 12, and the pressing member 126
By controlling the weight of the switch 12, the switch 12 can be accurately pressed with a constant pressure. Therefore, switch 1
2 can be performed accurately, and the reliability of this test is improved.

Further, by inspecting all the switches 12 with one pressing member 126, a plurality of cylinders 3 can be inspected.
As compared with the related art in which the switches 12 are pressed by using the a to 3c, all the switches 12 can be pressed under the same condition without being affected by the error due to the variation of the pressing member 126, and more accurately. An inspection can be performed.

In this embodiment, the switch 12 is used as a pressure-receiving member for pressing with a stable pressure. However, the present invention is not limited to the switch 12, and may be used, for example, for measuring a breaking pressure by pressing a predetermined part of an article. Of course, it can also be used.

[0047]

According to the pressure receiving member inspection method and apparatus of the present invention, the following effects and advantages can be obtained.

Since only the weight of the pressing member is applied to the pressure receiving member and the pressure of the pressure fluid is not applied to the pressure receiving member, the pressure fluctuation of the pressure fluid does not affect the pressure for pressing the pressure receiving member. Also, by controlling the weight of the pressing member, the pressure receiving member can be accurately pressed with a constant pressure. Therefore, the inspection can be performed accurately, and the reliability of the inspection is improved.

When the pressure for pressing the pressure receiving member is reduced, it is only necessary to reduce the weight of the pressing member. Even if the pressure is small, the pressing force can be accurately controlled. Can be performed accurately.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an inspection device for a pressure receiving member according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of the inspection device shown in FIG.

FIG. 3 is a sectional view taken along line III-III of the inspection apparatus shown in FIG. 2;

FIG. 4 is a cross-sectional view taken along the line IV-IV of the inspection apparatus shown in FIG.

FIG. 5 is a schematic sectional view of a collar member used in FIG.

FIG. 6 is a flowchart showing a method for inspecting a pressure receiving member according to the embodiment of the present invention.

FIG. 7 is a perspective view showing an inspection device for a pressure receiving member according to a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Mobile telephone 12 ... Switch 18 ... Judgment device 30 ... Inspection device 34 ... XY displacement mechanism 100 ... Cylinder 114 ... Support member 126 ... Pressing member 128 ... Shaft 132 ... Contact part 136a, 136b ... Color member 148 ... Weight

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaya Heda 5-1-1 Shimorenjaku, Mitaka-shi, Tokyo Japan Radio Co., Ltd. (72) Koji Fukushima 5-1-1 Shimorenjaku, Mitaka-shi, Tokyo Japan Radio F Term (in reference) 2G024 AA30 AD50 BA11 BA18 CA11 DA01 DA08

Claims (7)

[Claims] 1. A step of disposing a pressing member which is vertically displaceable with respect to a support member and whose displacement range is restricted by the support member above a pressure receiving member provided on a work. By lowering the support member and bringing the pressing member into contact with the pressure receiving member, the pressing member rises relatively to the support member, and the weight and pressure of the support member are applied to the pressure receiving member. A step of applying the weight of the pressing member to the pressure receiving member without applying the pressure and pressing the pressure receiving member. 2. The method according to claim 1, wherein the pressing member is disposed above the pressure receiving member.
The step of pressing the pressure receiving member is sequentially performed on a plurality of pressure receiving members provided on the work. 3. The method according to claim 1, wherein the step of disposing the pressing member above the pressure receiving member includes:
A method for inspecting a pressure-receiving member, comprising disposing the support member by displacing an XY displacement mechanism that is displaceable in X and Y directions that are horizontal and orthogonal to each other. 4. A support member displaceable in a vertical direction, a drive mechanism for driving the support member in a vertical direction, and a support member displaceable in a vertical direction with respect to the support member. And a pressing member whose downward displacement range is regulated by the pressing member. The supporting member descends under the driving action of the driving mechanism, and the weight of the pressing member is applied to the pressure receiving member provided on the work. The pressure receiving member is pressed by the pressure receiving member. 5. The apparatus according to claim 4, wherein a weight is detachably provided on the pressing member. 6. The device according to claim 4, wherein the pressing member is provided with a shaft extending in a vertical direction, and the pressing member is inserted through a hole formed in the support member. An inspection device for a pressure receiving member, wherein the inspection device is configured to be displaceable with respect to the support member. 7. The apparatus according to claim 4, wherein the driving mechanism is provided in an XY displacement mechanism that is displaceable in X and Y directions that are horizontal and mutually orthogonal. A pressure receiving member inspection apparatus, wherein the members are sequentially arranged on a plurality of pressure receiving members provided on the work under the action of displacement of the XY displacement mechanism and press the respective pressure receiving members.