JPH0520970Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a device for pressing an object to be measured in a thickness measuring device, and more specifically, to check whether the number of pieces of paper in a collected object is correct or not, and In a thickness measuring device used to check whether a resin plate, etc. has a predetermined wall thickness, a measuring element provided at the tip is pressed against the object to be measured, and the measuring element is pressed against the object to be measured. This relates to the pressing position for detecting positional deviation.

(Prior art) Checking whether the number of pieces of paper in collated materials such as data books and collated copies or printed matter such as catalogs was previously performed manually, but recently This is done by measuring the thickness of the compound or printed material using a thickness measuring device. Similar thickness measuring devices are also used to check whether synthetic resin boards, plywood, etc. are manufactured to a predetermined thickness. This kind of thickness measuring device can check the number of pieces of paper in a short time, and can also prevent missing pages, duplicate sheets, etc.
Furthermore, since it is possible to easily check for defective products such as synthetic resin plates, it is widely used in various fields.

By the way, as described in, for example, Japanese Utility Model Application Publication No. 59-53211, a conventional thickness measuring device uses a rod-shaped member equipped with a probe at the tip, which is slid vertically on the main body of the measuring device using a slide metal. The probe is inserted into a freely arranged cylindrical member so that its position can be adjusted, and the cylindrical member is biased toward the object to be measured using a spring or the like, and the probe is placed on the object to be measured on the object mounting table. The device is equipped with a device for pressing the object to be measured with a strong force, and the thickness of the object is measured by using a sensor to detect the displacement of the probe against the object that is sequentially sent onto the mounting table.

(Problems to be solved by the invention) In this measuring device, the thickness of the object to be measured is measured by pressing the object onto the object mounting table using a pressing device. It has the advantage of being able to accurately measure the thickness of any object.

However, in the conventional device described above, the tip of the probe is always pressed against the object to be measured, even when the object is being fed onto the object mounting table and when being sent out from there. . Therefore, while measuring the thickness of a large number of objects to be measured over a long period of time, contact with the objects as they are being fed or being fed out may cause the measuring point to deviate from the set position. There have been problems in that the pressing device is attached to the main body of the measuring device and the pressing device is attached to the main body of the measuring device, causing backlash or misalignment, making it impossible to perform accurate measurements.

In this case, as stated in the above publication,
If the probe is configured with a roller that rotates in the feeding direction of the object to be measured, the above-mentioned positional misalignment problem can be alleviated to some extent, but with this type of device, it is also necessary to detect even a single missing piece of paper. Therefore, extremely high precision is required, and since the probe is constantly pressing against a receiving part that moves up and down with the roller, it is not necessarily sufficient to just install the roller.

(Purpose of the invention) This invention was created in view of the above problems.
Even when measuring the thickness of many objects to be measured over a long period of time, there is no misalignment in the set position of the gauge head, and there is no play or misalignment in the mounting condition of the pressing device, ensuring accuracy at all times. The purpose of the present invention is to provide a thickness measurement position where accurate measurements can be made.

(Method for Interpreting the Problem) In order to achieve the above-mentioned purpose of the present invention, the thickness measuring device according to the present invention is disposed opposite to the object mounting table, and A measuring head configured to be able to adjust the interval between the two is provided so as to be able to freely slide vertically while being biased toward the mounting table, and the measuring head is configured to be able to adjust the interval between In a thickness measuring device that measures whether or not the object to be measured has a predetermined thickness by pressing the above-mentioned imaginary element against the object to be measured by using a sensor to detect the presence or absence of positional deviation with respect to the object to be measured, the rail member is placed on one side up and down. A sliding part is provided on the board laid in the direction, and the sliding part is arranged to be slidable in the vertical direction via a dovetail groove in the rail member, and the sliding part is inserted into the sensor so that it can move forward and backward. An indicator pin is attached, and a dovetail with a concave groove is provided on the front surface of the sliding part, and a dovetail groove that fits into the dovetail is formed, and a measuring element made of the roller described above is disposed at the lower end. The pressing portion is slidably attached to the sliding portion in the vertical direction, and further, the pressing portion is slidably engaged with a groove in the sliding portion, and a position adjustment screw is disposed in the groove. It is characterized in that it is supported by an engaging element that is threadedly engaged with the engaging element.

(Function) According to the present invention having the above-described configuration, the pressing device moves up and down with respect to the rail member laid on the board by the sliding part provided so as to be slidable in the up and down direction via the dovetail groove. It is configured like this, so
The pressing device slides with extremely high precision. In addition, the connection using the dovetail groove has sufficient strength in the direction in which the object to be measured is fed. Even when it is in constant contact with the object to be measured, including when it is inserted into the object and when it is sent out from there, it is not affected by the acting force of the object to be measured. Furthermore, in the configuration for positioning the measuring element, a connecting means using a dovetail groove is similarly used between the sliding part and the pressing part provided with the measuring element.
This portion is also not affected by the force acting on the object to be measured.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a schematic diagram of the entire thickness measuring device according to the present invention, in which 1 is a driving means, 2 is a main body of the measuring device that is operated by the driving force of the driving means, and 3 is a thickness measuring device that is used for measuring in the main body of the measuring device. The figure shows a display means for displaying measured values.

The driving means 1 includes a motor 4 and a gear 5 attached to the rotating shaft of the motor, and is configured to rotate at a predetermined speed.

The measuring device main body 2 is used by being attached to a workbench (not shown) equipped with an arbitrary object feeding device, and is connected to a drive device 6 as shown in FIG. A pressing device 7 is provided.

The drive device 6 has a base portion 10 on its lower side. This base section 10 includes a substrate 14 formed by superimposing a steel plate 11 having a substantially L-shaped cross section and a flat steel plate 12 having a substantially L-shaped plane, and fixing them with bolts 13, 13, and a substrate 14 on the substrate 14. A horizontal plate 16 is arranged and has an object-to-be-measured mounting table 15 at one end.

A drive gear 18 is provided on the lower front side of the base plate 14 of the base portion 10 and is connected to the gear 5 of the motor 4 via a chain belt 17 and rotates as the gear 5 rotates. As shown in FIG. 3, a cam means 19 is concentrically and integrally formed on the back side of the drive gear 18.
It is designed to rotate as the . This cam means 19 has a cam formed over about half of its outer circumference. Drive gear 18 of the board 14
On the upper side, there is a swinging piece 20 made of a substantially rectangular steel plate.
is pivotably mounted around the rotating shaft 20a as a fulcrum. As shown in FIG. 3, a step 20b is formed at the corner of the swinging piece 20 on the drive gear 18 side to avoid contact with the drive gear 18. A roller 21 that comes into contact with a cam means 19 provided on the drive gear 18 is rotatably mounted. The swing piece 20, on which the cam means 19 rotates as the drive gear 18 rotates, is configured to swing about the rotating shaft 20a as a fulcrum. Further, a lower end 22a of a link member 22 for transmitting the swinging motion of the swinging piece 20 to the arm member 34 of the upper arm portion 30 is attached to the upper side of the roller 21 of the swinging piece 20 via a bolt 22b. It is being

In addition, 23 in the figure indicates the drive gear 18 and the motor 4 in order to adjust the tension of the chain belt 19.
This is an adjustment gear provided between the gear 5 and the gear 5, and is attached to a long hole 24 vertically bored in the base plate 14 so as to be vertically adjustable.

Above the base section 10 described above, an arm section 30 is provided.
is provided. This arm section 30 is mounted on the horizontal plate 16 of the base section 10 on the object mounting table 15.
A support member 32 is fixed by bolts 31, 31 at a position opposite to the support member 32, and a support member 32 is superimposed above the support member 32 so as to extend toward the object mounting table. A rectangular substrate plate 33 is provided. An arm member 3 is located on the upper right side of this substrate plate 33.
4 is rotatably attached to the rotation shaft 34a as a fulcrum, and in the middle of the arm member 34,
The upper end 22c of the link member 22 is a bolt 22d.
It is pivotally connected via. As the drive gear 18 rotates, the arm member 34 rotates around the rotation shaft 3.
It is configured to swing about 4a as a fulcrum. Furthermore, a tongue piece 35 for transmitting the swinging motion of the arm member 34 to the pressing device 7 is fixed to the lower side of the tip of the arm member 34 .

Further, a substantially semicircular cam 36 is provided at the lower middle of the arm member 34 . This cam 3
6 is the substrate plate 3, as shown in FIG.
The substrate plate 33 is attached to the shaft portion 36a passing through the substrate plate 33.
The tip of a substantially L-shaped operating lever 37 provided on the back side of the arm member 34 is connected to the arm member 34 so that the arm member 34 can be moved up and down by manual operation by rotating the arm.

Tongue piece 35 of the arm member of the substrate plate 33
The above-mentioned pressing device 7 is connected to the side.
As shown in FIGS. 5 to 7, this pressing device 7 includes a substantially rectangular substrate 4 superimposed on the side edge of the substrate plate 33 on the side of the operating lever 37.
0. On the opposite side of the board 40 from the arm portion 30, a rail member 42 having a so-called dovetail 41 formed thereon over its entire length is laid in the vertical direction.

A sliding portion 44 is slidably attached to the rail member 42 and has a so-called dovetail groove 43 formed in the vertical direction on one surface thereof to engage with a dovetail 41 of the rail member. Brackets 45a and 45b are fixed to both sides of the sliding portion 44, and the substrate plate 33 of the arm portion 30 and the substrate 40 are fixed to each side of the sliding portion 44.
Contraction springs 47a and 47b are respectively attached between brackets 46a and 46b fixed to the lower ends of the slider so as to protrude toward the sliding portion, respectively, so as to constantly bias the sliding portion 44 downward. It's summery.
Further, in the middle of the side surface of the arm portion 30 of the sliding portion 44 on the substrate plate 33 side, there is a rotatable roller 47c that comes into contact with the upper surface of the tip portion of the tongue piece 35 provided at the tip portion of the arm member 34 described above. installed on. Thus, the sliding portion 44 is connected to the spring 47.
in a state where it is always urged downward by a, 47b,
As the arm member 34 swings, it slides on the rail member 42 in the vertical direction.

Furthermore, a horizontal plate 48 having a substantially triangular extension 48a extending along the substrate 40 is attached to the upper part of the sliding portion 44. Further, on the surface of the sliding portion 44 opposite to the surface on which the dovetail groove 43 is formed, a dovetail 49 is formed in the vertical direction, and the pressing portion 50 is slidably disposed through the dovetail 49. There is.

The pressing portion 50 includes a connecting portion 51 having a dovetail groove 51a that engages with the dovetail 49;
It has a measuring section 53 connected to the lower side of the measuring section 53 .
This measuring section 53 includes a first member 54 having a stepped portion 54a formed at its tip, and a second member 54 attached to the side surface of the first member 54 on the side where the stepped portion is formed by bolts 55, 55.
A roller 57 as a probe is rotatably disposed in the space formed by the stepped portion 54a. This roller 57 is placed in a position facing the object to be measured 15 provided on the horizontal plate 16 of the base section 10 of the drive device 6 described above, and the roller 57 is placed in a position facing the object to be measured. It is arranged to rotate in the feeding direction.

Between the sliding part 44 and the pressing part 50, there is a height position adjustment mechanism 6 for the roller 57 as the measuring element.
0 is set. This height position adjustment mechanism 60
is the concave portion 4 of the horizontal plate 48 above the sliding portion 44.
A position adjusting screw 62 is rotatably inserted into a groove 49a provided in a dovetail 49 of the sliding portion 44 via a bush 61 provided in the sliding portion 8c. This position adjustment screw 62 has a knob 62a at its upper end and an enlarged diameter portion 62b located at the upper end of the groove 49a.
A washer 48d rotatably mounted between the bushing 6 and the lower surface of the bush 6 disposed in the recess 48c prevents the bushing from moving in the vertical direction within the recessed groove.

On the other hand, in the groove 49a provided in the dovetail 49 of the sliding portion 44, as shown in FIG.
An engaging element 63 is provided which engages 9a so as to be slidable in the vertical direction and is threadedly engaged with the position adjustment screw 62. The engaging member 63 engages with a recess provided in the connecting portion 51 of the pressing portion 50 in the vertical direction. Further, the engaging element 63 has a shaft part 63a that is formed integrally with the engaging element and extends in a direction perpendicular to the adjusting screw 62.
passes through the center hole of the tightening member 65 screwed onto the connecting portion 51 and projects to the outside. This tightening member 65 has a threaded portion 6 that is threadedly engaged with the connecting portion 51.
5a, and a gear part 65b whose outer periphery is formed into a gear shape and whose diameter is larger than that of the threaded part 65a.
A tightening lever 64 is attached to 5b.
As shown in FIGS. 5 and 6, this tightening lever 64 includes a substantially ring-shaped rotating portion 64a and a rotating portion 64a.
It consists of a handle part 64b that is integrally connected to 4a,
Further, the tightening member 65 is provided on the inner surface of the rotating portion 64a.
A gear 64c that engages with the gear portion is formed. The rotating portion 64a of the tightening lever 64
The outer end surface of the fastening member 65 is substantially flush with the end surface of the gear portion of the tightening member 65, and is fixed from the outside with a nut 63b via a washer inserted into the shaft portion 63a of the engaging member 63. ing. Therefore, when the tightening lever 64 is rotated clockwise, the tightening member 65 also rotates in the same direction, whereby the threaded portion of the tightening member 65 is rotated against the engager 63.
It is further screwed into the side and comes into contact with the engaging element, thereby pressing the engaging element 63 against the adjustment screw 62. As a result, the engaged state of the engagement element 63 and the adjustment screw 62 is fixed, thereby reliably preventing the set position of the measuring element from shifting due to loosening of the adjustment screw 62.

Reference numeral 66 in the figure denotes a fixing position regulating member for the tightening lever 64, which includes an arc-shaped notch that contacts the outer periphery of the fixing portion 64a of the tightening lever 64, and a notch formed on both sides thereof. It has a locking end surface that comes into contact with the handle portion 64b of 64, and is fixed to the connecting portion 51 with bolts 67, 67 below the tightening lever 64.

When the position adjusting screw 62 is rotated, the engaging element 63 that is screwed with the screw 62 moves into the groove 49.
a, and as the engaging element 63 moves, the pressing part 50 also moves in the vertical direction with its dovetail groove 51a and the dovetail 49 of the sliding part 44 engaged. has been done.

The rail member 42 on the board 40 of the pressing device 7
As shown in FIGS. 5 and 6, a sensor 70 is provided on the side. This sensor 70
consists of a general position detection sensor having a substantially cylindrical shape, and includes a support base 72 having a semicircular recess fixed to the substrate 40 by bolts 71, and a support base 72 having a semicircular recess fixed to the base plate 40 with bolts. It is held and fixed with a presser cover 73 having a circular recess. This sensor 70 includes an extension portion 48 of the horizontal plate 48 on the sliding portion 44 of the pressing device 7.
A position indicating pin 74 provided downward is inserted into a portion so as to be movable back and forth, and changes in the position of the pin 74 are detected. Then, the measuring element 57 of the pressing device 7
If the position of contact with the object to be measured is below or above a predetermined value, a signal to that effect is sent to the measurement display main body 3.

The measurement display main body 3 consists of a display device with a built-in microcomputer, and is equipped with a buzzer, a lamp, etc. to indicate that there is an abnormality in the measured value, and in the event of an abnormality, it is immediately sent to the drive motor and the device to be measured. The power is turned off and the operation is stopped.

Hereinafter, the operation of the measuring device according to the above embodiment will be explained.

First, the pressing device 7 is lowered to the lowest position,
In this state, the position of the roller 57 as a measuring element provided at the tip of the pressing device 7 is adjusted. That is,
After releasing the tightening lever 64 of the pressing device 7, turn the position adjustment screw 62 to place the roller 5 on the object placed on the object mounting table 15.
The height position of the roller 57 is adjusted so that the roller 7 comes into contact with the roller 57. Thereafter, the height position of the roller 57 is fixed by the tightening lever 64. Further, in this state, the display value of the measurement display main body 3 is set to display a normal value. As a result, the thickness of the object to be measured is measured with the roller 57 always pressed against the object by a constant pressing force, that is, the urging force of the contraction springs 47a and 47b.

Next, a switch (not shown) is turned on to energize the drive motor 4 and the object feeding device on the workbench. In this case, the object-to-be-measured feeding device moves the object-to-be-measured mounting table 15 for each rotation of the drive gear 18.
The device is configured to send the object to be measured upward.

The drive motor 4 is energized, and the gear 5 of the motor is
When the drive gear 18 rotates, the drive gear 18 provided on the base portion 10 of the drive device 6 rotates via the chain belt 17. When the drive gear 18 rotates, the cam means 19 formed integrally with the drive gear 18 also rotates. A roller 21 provided on a swinging piece 20 is in contact with this cam means 19,
As the drive gear 18 rotates, the swing piece 20 swings. The swinging of this swinging piece is carried out by the arm member 34 of the arm part 30 provided on the upper part of the base part 10 via the link means 22 pivotally connected to the swinging piece.
The arm member 34 moves up and down once for each rotation of the drive gear 18. The tongue piece 35 provided at the tip of the arm member 34 is attached to a roller 47c provided on one side of the pressing device 7.
The arm member 3 is in contact with the lower surface of the arm member 3.
4 moves up and down, the pressing device 7 also moves up and down.
In this case, the pressing device 7 includes springs 47a, 47
Due to the acting force b, a downward acting force is always working. When this pressing device 7 moves upward with the vertical movement of the arm member 34, the pressing device 7
The object to be measured is sent onto the object mounting table 15 facing the roller 57 provided at the tip of the object. Then, when the drive gear 18 further rotates and the arm member 34 descends accordingly, the roller 57 of the pressing device also comes into contact with the object to be measured due to the urging force of the springs 47a and 47b. At that time, the roller 57
As described above, since it comes into contact with the object to be measured with a predetermined pressing force, the thickness can be accurately measured.

On the other hand, if the object to be measured has missing pages, two-sheet output, etc., the roller 57 comes into contact with the object at a position shifted downward or upward from the initially set position. This positional deviation causes the sliding part 44 of the measuring device 7 to move downward or upward compared to the normal case, so the sensor 70 can detect this positional deviation, and a signal to that effect can be sent to the display means. 3 to display the abnormality and turn off the power to the drive motor 4 and the device to be measured. In that case, the abnormal object to be measured can be removed by manually operating the operating lever 37 of the arm section 30.

Unless the above-mentioned abnormality is detected, when the drive gear 18 rotates further, the roller 57 moves upward again, and at that time, the measured object is sent out and the next measured object is placed on the measured object. It will be sent to the table.

The above-mentioned operations are carried out continuously, and the thickness of the collected items etc. is automatically measured.

In addition, in the embodiment described above, one of the drive gears 18
Although the roller 57 as a measuring element is configured to move up and down one time by rotation, the cam means 19 may be provided with a plurality of cam parts so that the roller moves up and down multiple times by one rotation of the gear. is also possible.

Furthermore, in the above embodiment, the pressing device is configured to move up and down each time the object to be measured is sent by the driving device, but the pressing device for the object to be measured according to the present invention can be moved up and down by the driving device. It may be configured to be driven by a drive device, or it can also be used in a manually operated thickness measuring device that does not use a drive device. Even in that case, since the pressing device according to the present invention is firmly and precisely connected to the substrate via the dovetail groove so as to be able to freely slide in the vertical direction, it can achieve substantially the same effect as in the case of the above embodiment. .

(Effects) According to the device for pressing the object to be measured in the thickness measuring device according to the present invention, the sliding portion is slidably connected to the measuring device substrate in the vertical direction via the dovetail groove,
In addition, since the pressing part provided with the measuring element is connected to the sliding part through a dovetail groove, it operates accurately without play or displacement.

In addition, since a roller is used for the probe, it does not wear out due to contact with the object to be measured, and can accurately and quickly measure even objects made of multiple layers of flexible paper or synthetic resin pieces. can do.

Furthermore, the pressing part can accurately adjust the thickness of the object to be measured using the adjustment screw, and the rotation of the adjustment screw can be fixed after the thickness is adjusted using the tightening lever, so the adjustment position can be precisely adjusted. Can be retained.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the entire thickness measuring device according to the present invention, FIG. 2 is a side view of the main body of the thickness measuring device according to the present invention, and FIG. A cross-sectional view, Figure 4 is taken along line B-B in Figure 2.
5 is a partially sectional front view of the pressing device in the thickness measuring device according to the present invention, FIG. 6 is a sectional view taken along line C-C in FIG. 5, and FIG. It is a DD sectional view. 1 is a drive means, 2 is a measuring device main body, 3 is a measurement display main body, 6 is a drive device, 7 is a pressing device, 10 is a base part, 14 is a substrate, 15 is a measured object mounting table, 18
1 is a drive gear, 19 is a cam means, 20 is a swinging piece, 3
0 is an arm part, 34 is an arm member, 40 is a substrate,
42 is a rail member, 44 is a sliding part, 47a, 47
b is a biasing means, 50 is a pressing part, 53 is a measuring part, 5
7 is a measuring element, 62 is an adjustment screw, 63 is an engaging element, 6
4 is a tightening lever, 65 is a tightening member, and 70 is a sensor.

Claims (1)

[Claims for Utility Model Registration] A measuring element which is disposed opposite to an object to be measured on a mounting table and whose distance from the mounting table can be adjusted is biased toward the mounting table. The probe is provided to be slidable in the vertical direction, and the probe is pressed against the object to be measured placed on the mounting table, and a sensor detects the presence or absence of positional deviation of the probe with respect to the object to be measured. In a thickness measuring device for measuring whether or not a material has a predetermined thickness, a substrate is provided with a rail member laid vertically on one side, and the rail member is slidably slidable vertically through a dovetail groove. A sliding part is provided, a position indicating pin is attached to the sliding part to be inserted into the sensor so as to be movable forward and backward, and a dovetail having a groove is provided on the front surface of the sliding part, A dovetail groove that fits into the dovetail is formed, and a pressing part having a measuring element made of the roller at its lower end is attached to the sliding part so as to be slidable in the vertical direction; An object to be measured in a thickness measuring device, characterized in that the object is supported by an engaging element that slidably engages with the groove of the sliding part and screws with a position adjustment screw disposed in the groove. pressing device.