Lens thickness standard automatic detection mechanism

Abstract

The utility model discloses and provides an automatic lens thickness standard detection mechanism which can automatically detect the processing standard process of the thickness of a processed lens and realize shutdown of a processing stroke after the thickness reaches the standard. The device comprises a microspur moving switch assembly and an electronic alarm display terminal, the electronic alarm display terminal is electrically connected with a driving motor of an external lens machining moving shaft, and the microspur moving switch assembly comprises a supporting box body, a contact needle head, a microspur spring, a sensing piece, an in-place sensor and a pressing piece. The utility model is applicable to the field of lens polishing processing.

Description

Technical Field

[0001] The utility model relates to an automatic detection mechanism for lens thickness reaching a standard. Background Art

[0002] During the lens grinding process, the grinding depth of the lens, that is, the thickness of the lens, needs to be detected. In the past, the grinding depth of the lens was generally detected using a thickness gauge, but the processing could be stopped when the digital display was within the preset standard range. However, using only digital display, the processing personnel may neglect to observe or move slowly due to fatigue due to long-term work, resulting in delayed stopping of the processing axis and failure of lens thickness processing. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an automatic lens thickness reaching standard detection mechanism which can automatically detect the progress of lens thickness processing reaching the standard and realize the shutdown of the processing stroke after reaching the standard.

[0004] The utility model includes a macro mobile switch component and an electronic alarm display terminal, wherein the electronic alarm display terminal is electrically connected to a driving motor of an external lens processing moving axis, and the macro mobile switch component includes a supporting box body, a contact needle, a macro spring, a sensing sheet, an in-position sensor and a pressing sheet, wherein the supporting box body is adapted and fixedly arranged on the outer shell side wall of the external lens processing moving axis, the contact needle is adapted and movably telescopically arranged on the front part of the supporting box body, the tail end of the contact needle is adapted and movably inserted into the supporting box body, the macro spring is adapted and arranged in the supporting box body and connected to the tail end of the contact needle, the sensing sheet is adapted and arranged on the tail end of the contact needle, the in-position sensor is adapted and arranged in the supporting box body and movably adapted to the sensing sheet, the in-position sensor is electrically connected to the electronic alarm display terminal, the pressing sheet is adapted and arranged on the external lens processing moving axis, and the pressing sheet is adapted and movably placed in front of the contact needle.

[0005] The center of the conical head end of the contact needle is aligned with the center point of the pressing tablet.

[0006] Beneficial effect: In the utility model, the pressing plate is driven by the external lens processing moving axis, and the pressing plate is just pressed on the conical head end of the contact needle. After the contact needle is subjected to the pressure of the pressing plate, it moves backward to overcome the force of the macro spring, and at the same time drives the sensing plate to move backward. When the sensing plate moves backward and enters the in-place sensor, the lens is processed to a preset thickness. At this time, the in-place sensor sends an electrical signal to the electronic alarm display terminal to display an alarm. At the same time, the electronic alarm display terminal controls the driving motor of the external lens processing moving axis to stop moving, thereby completing the automatic detection of the lens thickness and automatically stopping the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0008] like Figure 1 As shown, the utility model includes a macro mobile switch component and an electronic alarm display terminal 2, the electronic alarm display terminal 2 is electrically connected to the driving motor of the external lens processing moving axis, the macro mobile switch component includes a supporting box body 11, a contact needle 12, a macro spring 13, a sensing sheet 14, an in-position sensor 15 and a pressing sheet 16, the supporting box body 11 is adapted and fixedly arranged on the outer shell side wall of the external lens processing moving axis, the contact needle 12 is adapted and movably telescopically arranged at the front of the supporting box body 11, the tail end of the contact needle 12 is adapted and movably inserted into the supporting box body 11, the macro spring 13 is adapted and arranged in the supporting box body 11 and connected to the tail end of the contact needle 12, the sensing sheet 14 is adapted and arranged on the tail end of the contact needle 12, the in-position sensor 15 is adapted and arranged in the supporting box body 11 and movably adapted with the sensing sheet 14, the in-position sensor 15 is electrically connected to the electronic alarm display terminal 2, the pressing sheet 16 is adapted and arranged on the external lens processing moving axis, and the pressing sheet 16 is adapted and movably placed in front of the contact needle 12. The center of the conical head end of the contact needle 12 is aligned with the center point of the pressing piece 16 .

[0009] During the lens grinding process, the driving motor of the external lens processing moving axis drives the external lens processing moving axis to move, that is, the lens is subjected to a grinding stroke. The pressing plate 16 is driven by the external lens processing moving axis, and the pressing plate 16 is just pressed on the conical head end of the contact needle 12. After the contact needle 12 is pressed by the pressing plate 16, it moves backward to overcome the force of the macro spring 13, and at the same time drives the sensing plate 14 to move backward. When the sensing plate 14 moves backward and enters the in-place sensor 15, the lens is processed to a preset thickness. At this time, the in-place sensor 15 sends an electrical signal to the electronic alarm display terminal 2 to display an alarm. At the same time, the electronic alarm display terminal 2 controls the driving motor of the external lens processing moving axis to stop the action, and the automatic detection of the lens thickness and the automatic stop of the grinding process are completed.

[0010] The utility model is suitable for the field of lens grinding and processing.

Claims

1. An automatic lens thickness detection mechanism, characterized in that: The invention comprises a macro movable switch component and an electronic alarm display terminal (2), wherein the electronic alarm display terminal (2) is electrically connected to a driving motor of an external lens processing movable shaft, and the macro movable switch component comprises a supporting box body (11), a contact needle (12), a macro spring (13), a sensing sheet (14), an in-position sensor (15) and a pressing sheet (16), wherein the supporting box body (11) is adapted to be fixedly arranged on a side wall of a housing of the external lens processing movable shaft, the contact needle (12) is adapted to be movably telescopically arranged at the front of the supporting box body (11), and the tail end of the contact needle (12) is adapted to be movably inserted in the housing. The macro spring (13) is adapted to be arranged in the support box body (11) and connected to the tail end of the contact needle (12); the sensing sheet (14) is adapted to be arranged on the tail end of the contact needle (12); the in-position sensor (15) is adapted to be arranged in the support box body (11) and movably adapted to the sensing sheet (14); the in-position sensor (15) is electrically connected to the electronic alarm display terminal (2); the pressing sheet (16) is adapted to be arranged on the external lens processing moving axis; and the pressing sheet (16) is adapted to be movably placed in front of the contact needle (12).

2. The automatic lens thickness detection mechanism according to claim 1, characterized in that: The center of the conical head end of the contact needle (12) is aligned with the center point of the pressing sheet (16).

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