JP3898472B2 - Temperature information printing system on quartz crystal - Google Patents

Description

[0001]
The present invention relates to a temperature information printing system on a crystal resonator, and more particularly to a temperature information printing system in which temperature information is printed by an in-line frequency temperature characteristic measuring device.
[0002]
[Prior art]
Background of the Invention Quartz resonators are known as frequency and time reference sources, and are particularly used in oscillators in communication equipment. One such type is a temperature-compensated oscillator that determines constants of each element of the temperature compensation circuit based on, for example, temperature information regarding frequency temperature characteristics printed on the surface of a crystal resonator.
[0003]
(Example of Prior Art) FIGS. 4 and 5 are schematic views of a crystal unit and a temperature information printing system for explaining one conventional example.
For example, the crystal unit 1 accommodates a crystal piece 3 in a container body 2 and covers a cover 4 so as to be hermetically sealed. The quartz piece 3 is fixed by a conductive adhesive 5 on both sides of one end of an electrode (not shown). A mounting electrode 6 is provided on the outer surface of the container body 1.
[0004]
In the temperature information printing system, first, a large number of crystal resonators 1 are arranged in the recesses 8 of the measurement ring 7, and an operator opens and accommodates a hemispherical lid of a temperature chamber (chamber) 9. The temperature tank 9 is sequentially set to 5 temperatures of, for example, -30, 0, 25, 50 and 75 ° C. Then, at each temperature in the temperature chamber 9, the vibration frequencies of the many crystal resonators 1 disposed on the measurement ring 7 are measured by the frequency measuring device 10. Note that the measurement terminal 11 is in contact with the mounting electrode 6 provided on the bottom surface of the crystal unit 1 and is measured. At the same time, the vibration frequency at each temperature of each crystal resonator 1 is captured (written) into the recording medium of the computer 12 as temperature information.
[0005]
Next, the operator opens the lid of the temperature chamber 9 and takes out the measuring ring 7 and takes out the temperature information recording medium from the computer 12. These are managed so that the measurement ring 7 corresponds to the recording medium. Then, the recording medium is set in a computer of a printing apparatus using a laser or the like (not shown). Then, the crystal resonators 1 are sequentially taken out from the measurement ring 7 and supplied to the printing device, and the temperature information captured by the computer is printed on each crystal resonator 1 as a barcode.
[0006]
The crystal resonator 1 on which the temperature information is printed is mounted on a circuit board that forms the oscillator. Then, each element value of a temperature compensation circuit (not shown) is calculated based on the temperature information, and an element corresponding to this is mounted.
[0007]
[Problems to be solved by the invention]
(Problem of the prior art) However, in the temperature information printing system having the above configuration, the lid of the temperature chamber 9 is opened and closed, the measuring ring 7 is taken in and out, and the temperature information is printed by being transferred to the printing device together with the recording medium. For this reason, there is a problem in that automation up to printing of temperature information is not achieved and labor costs increase. Further, when the measurement ring 7 and the recording medium are transported from the temperature tank 9 to the printing device, if these amounts are large, there is a problem that the measurement ring 7 and the recording medium are confused to print incorrect temperature information. there were.
[0008]
(Object of the Invention) An object of the present invention is to provide a temperature information printing system on a quartz oscillator that automates the measurement of frequency temperature characteristics of the quartz oscillator and printing of temperature information.
[0009]
[Means for Solving the Problems]
The present invention continuously transports a crystal unit through a plurality of temperature chambers having different temperatures in the chamber, obtains temperature information in each temperature chamber of the crystal unit, loads it into a computer, and carries it out of the final temperature chamber. Printing temperature information on a crystal unit is a basic solution.
[0010]
[Action]
In the present invention, since the temperature information of the crystal resonator is obtained by continuously conveying a plurality of temperature vessels, the printing process can be automated. An embodiment of the present invention will be described below.
[0011]
【Example】
FIG. 1 is a schematic view of a system for printing temperature information on a quartz resonator, illustrating an embodiment of the present invention. In addition, the same number is attached | subjected to the same part as a prior art example, and the description is simplified or abbreviate | omitted.
The temperature information printing system includes a frequency temperature measuring mechanism 13 and a printing mechanism 14. The frequency temperature measuring mechanism 13 includes a plurality of temperature tanks 15 (abcde) here. Each temperature tank 15 is maintained at a constant temperature, for example, at five temperature points of 20, -30, 0, 50, and 75 ° C. The supply unit 16 of the crystal unit 1 is provided at the front stage of the temperature tank 15a, and the printing mechanism 14 is provided at the rear stage of the temperature tank 15e. A shutter mechanism 23 opens and closes between the supply unit 16, each temperature tank 15, and the printing mechanism 14. Then, the crystal unit 1 is transported by the transport mechanism between the supply unit 16 and the printing mechanism 14.
[0012]
As shown in the schematic cross-sectional view of FIG. 2, the transport mechanism includes a pair of transport fixing rails 18 each having a recess 17 in each temperature tank 15 and a transport moving body 19 provided below the pair. The transport moving body 19 includes a transport movable rail 21 having a transport claw 20 protruding into the recess 17 of the transport fixed rail 18. Then, the transfer movable rail 21 is moved up and down to move forward and backward, and the transfer carrier 22 accommodated in each recess 17 is moved to the next recess 17. These are intermittent operations that repeat operations and stops.
[0013]
A shutter mechanism 23 provided between the supply unit 16, each temperature tank 15, and the printing mechanism 14 is opened when the transport moving body 19 operates to transfer the transport carrier 22 to the next temperature tank 15, and is closed when stopped. And Further, as shown in FIG. 3, the transport carrier 22 is provided with a recess 23 to accommodate (hold) a plurality of crystal resonators 1. Then, the barcode 24 is formed individually.
[0014]
In such a case, when each carrier 22 containing a plurality of crystal resonators 1 is carried into the thermostatic chamber 15a from the supply unit 16, first, the barcode 24 of the carrier 22 is read by the code reader 25a. And stored in the host computer 27.
[0015]
Next, each carrier 22 is sequentially carried into the temperature vessel 15a through the shutter mechanism 23, reaches the temperature inside the vessel, and sets the vibration frequency of each crystal resonator 1 by the frequency measuring device 26 provided on the carry-out side. Measured. Then, through the computer 12 linked to the frequency measuring device 26, the vibration frequency at the temperature in the tank of 20 ° C. is stored in the host computer 27 as temperature information.
[0016]
Next, it is carried into the constant temperature bath 15b through the shutter mechanism 23, the vibration frequency of the bath temperature -30 ° C. is measured, the temperature information is recorded in the host computer 27, and the temperature of the temperature bath 15 (cde) in the same manner. The temperature information of the crystal unit 1 at 0, 50, and 75 ° C. is recorded in the host computer 27.
[0017]
Next, the transport carrier 22 whose vibration frequency has been measured in the last temperature bath 15 e is transported to the printing mechanism 14 via the shutter mechanism 23. The bar code 24 is read by the code reader 25b, and the temperature information of each crystal resonator 1 of the bar code 24 stored (stored) in the host computer 27 is read. Each temperature information is recorded on, for example, the cover 4 of the crystal unit 1 by a printing device using a laser or the like. These are continuously performed on the crystal resonator 1 of the transport carrier 22 that is sequentially transported.
[0018]
If it is such composition, each conveyance carrier 22 which stored many crystal oscillators 1 will convey the temperature information of each crystal oscillator 1 by conveying a plurality of temperature vessels 15, and will store in host computer 27, The bar code 24 of each carrier 22 is recognized (verified) and temperature information is printed. Therefore, after the conveyance carrier 22 is installed in the supply unit 16, the measurement from the measurement of the vibration frequency at each temperature to the printing of the temperature information can be automated, and the human labor is eliminated to prevent confusion.
[0019]
[Other matters]
In the above-described embodiment, the crystal resonator has been described. However, the present invention can be similarly applied to, for example, a crystal oscillator in which an IC chip constituting a crystal piece and an oscillation circuit is enclosed in the container body 2, and the present invention excludes this. is not. Moreover, although the temperature tank 15 was five, it can set arbitrarily not only in this. In addition, although each computer 12 is connected to each temperature chamber 15, only the host computer 27 may be used depending on the capacity.
[0020]
【The invention's effect】
The present invention continuously transports a crystal unit through a plurality of temperature chambers having different temperatures in the chamber, obtains temperature information in each temperature chamber of the crystal unit, loads it into a computer, and carries it out of the final temperature chamber. Since the temperature information is printed on the crystal unit, it is possible to provide a temperature information printing system on the crystal unit that automates the measurement of frequency temperature characteristics and the printing of temperature information.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of a system for printing temperature information on a crystal unit, illustrating an embodiment of the present invention.
FIG. 2 is a partial cross-sectional view of a transport mechanism for explaining an embodiment of the present invention.
FIG. 3 is a partial plan view of a transport mechanism for explaining an embodiment of the present invention.
FIG. 4 is a cross-sectional view of a crystal resonator for explaining a conventional example.
FIG. 5 is a measurement diagram of frequency temperature characteristics for explaining a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Quartz crystal resonator, 2 Container body, 3 Crystal piece, 4 Cover, 5 Conductive adhesive, 6 Mounting electrode, 7 Carrying ring, 8, 17 Recessed, 9, 15 Temperature tank, 10, 26 Frequency measuring apparatus, 11 Measurement terminal, 12 computer, 13 frequency temperature characteristic measurement mechanism, 14 printing mechanism, 16 supply unit, 18 transport fixed rail, 19 transport moving body, 20 transport claw, 21 transport movable rail, 22 transport carrier, 23 shutter mechanism, 24 bar Code, 25 reader, 27 host computer.

Claims (1)

In a temperature information printing system for a crystal resonator in which temperature information related to the frequency temperature characteristics of a crystal resonator in which a crystal piece is hermetically sealed is printed on the outer surface of the crystal resonator, the crystal resonator includes a plurality of different temperatures in the tank. The temperature chamber is continuously conveyed to obtain temperature information in each temperature chamber of the crystal resonator, and the temperature information is taken into a computer, and the crystal resonator unloaded from the final temperature chamber is transferred to the computer. A temperature information printing system for a quartz crystal, wherein the temperature information taken is printed.

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