Control device for fine machining of spectacle lenses

Abstract

The control device comprises a control system, a slotting control part, a mode selection part, a guide part and a grinding wheel part, the slotting control part and the grinding wheel part are fixed to a main machine of spectacle lens finish machining equipment, and the mode selection part and the guide part are fixed to the slotting control part. Through the control system and the mechanical structure, the machining mode is freely selected, the grooving position is freely controlled, and great convenience is provided for a processer; and compared with the prior art, the machining efficiency is higher, and good social and economic benefits are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of spectacle lens finishing, in particular to a control device for spectacle lens finishing. Background Art

[0002] As the vision of young people has gradually declined in recent years, the proportion of myopia has gradually increased, and the market demand for eyeglass processing equipment has become higher in both quality and quantity. The traditional method of finishing eyeglass lenses is to use semi-automatic grooving machines and hand grinders for finishing. This type of processing method requires human control during the processing process, such as the selection of grooving positions (generally processed in a 3:7 or 5:5 ratio, with the 3:7 and 5:5 ratios being the distance between the groove position and the convex surface of the lens) and the selection of processing modes (i.e., grooving mode and chamfering mode). This method has certain requirements on the level of the processor, raises the industry threshold, and has low efficiency. In addition, it is necessary to purchase both a semi-automatic grooving machine and a hand grinder to better finish the lenses, which has a low cost-effectiveness. Summary of the invention

[0003] The object of the present invention is to provide a control device for fine processing of eyeglass lenses to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a control device for finishing eyeglass lenses, comprising a control system, a grooving control unit, a mode selection unit, a guide unit and a grinding wheel unit, wherein the grooving control unit and the grinding wheel unit are fixed on a main unit of an eyeglass lens finishing equipment, and the mode selection unit and the guide unit are fixed on the grooving control unit.

[0005] Optionally, the groove control part includes a base plate, on which a motor mounting column and a micro switch frame are fixed, the micro switch frame is provided with a first micro switch, the micro switch frame is connected to the guide motor frame, the guide motor frame is connected to the groove depth control frame through the motor frame fixing column, the groove depth control frame is connected to the lens holder, the motor mounting column is connected to the groove depth linear motor; the groove depth control frame is connected to the groove depth rotating shaft, and the groove depth rotating shaft is provided with a bearing.

[0006] Optionally, the mode selection unit includes a first motor and a second micro switch arranged on the guide motor frame, and a reed fixing column arranged on the groove depth control frame, the first motor is connected to the cam, the reed fixing column is connected to the reed, and the reed is provided with a bump, a synchronization pin and an adjustment groove.

[0007] Optionally, the guide part has the same structure and is symmetrically arranged on the left and right, including a guide seat, a fixed column and a guide arm are provided on the guide seat, an adjusting disk is provided on the fixed column, a first adjusting column and a second adjusting column are provided on the adjusting disk, springs are provided on the left and right second adjusting columns, and a guide wheel is provided on the guide arm.

[0008] Optionally, the cam includes a first arc-shaped boss and a second arc-shaped boss arranged on both sides, and a central column arranged in the center, and a curved groove is provided on the central column.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] The present invention provides great convenience for processors by freely selecting processing modes and controlling the slotting positions through a control system and a mechanical structure; compared with the prior art, the processing efficiency is higher and there are good social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0012] Figure 2 It is a structural schematic diagram of the slotting control part of the present invention;

[0013] Figure 3 It is a structural schematic diagram of the mode selection unit of the present invention;

[0014] Figure 4 It is a schematic diagram of the position of the adjustment slot of the present invention;

[0015] Figure 5 It is a structural schematic diagram of the cam of the present invention;

[0016] Figure 6 It is a structural schematic diagram of the guide part of the present invention;

[0017] Figure 7 It is a schematic diagram of the initial state of the guide part of the present invention;

[0018] Figure 8 It is a schematic diagram of the guide portion state of the chamfering mode of the present invention;

[0019] Fig. 9 It is a schematic diagram of the guide portion state in the symmetrical slotting mode of the present invention;

[0020] Fig.10 It is a schematic diagram of the state of the guide portion of the adjustable distance slotting mode of the present invention. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] like Figure 1-10 As shown, a control device for finishing an eyeglass lens comprises a control system, a grooving control unit 100, a mode selection unit 200, a guide unit 300 and a grinding wheel unit 400, wherein the grooving control unit 100 and the grinding wheel unit 400 are fixed on a mainframe of an eyeglass lens finishing device, and the mode selection unit 200 and the guide unit 300 are fixed on the grooving control unit 100.

[0023] The slotting control unit 100 includes a base plate 104, on which a motor mounting column 109 and a micro switch frame 105 are fixed, on which a first micro switch 106 is provided, the micro switch frame 105 is connected to a guide motor frame 107, the guide motor frame 107 is connected to a slot depth control frame 101 via a motor frame fixing column 108, the slot depth control frame 101 is connected to a lens holder 111, the motor mounting column 109 is connected to a slot depth linear motor 110; the slot depth control frame 101 is connected to a slot depth rotating shaft 102, on which a bearing 103 is provided.

[0024] The mode selection unit 200 includes a first motor 201 and a second micro switch 203 arranged on the guide motor frame 107, and a reed fixing column 205 arranged on the groove depth control frame 101. The first motor 201 is connected to the cam 202, and the reed fixing column 205 is connected to the reed 204. The reed 204 is provided with a protrusion 206, a synchronization pin 207 and an adjustment groove 208.

[0025] The guide part 300 has the same structure and is symmetrically arranged on the left and right, including a guide seat 301, on which a fixed column 303 and a guide arm 306 are provided, on which an adjustment disk 302 is provided, on which a first adjustment column 304 and a second adjustment column 305 are provided on the adjustment disk 302, on which two left and right second adjustment columns 305 are provided with springs 308, and on which a guide arm 306 is provided with a guide wheel 307.

[0026] The cam 202 includes a first arc-shaped boss 2021 and a second arc-shaped boss 2022 arranged on both sides, and a central column 2023 arranged in the center. A curved groove 2024 is provided on the central column 2023 .

[0027] When the present invention is working, when the lens chamfering mode is selected, an instruction is sent to the first motor 201 through the program to drive it to start rotating clockwise, thereby driving the cam 202 to start rotating. When the cam rotates a certain angle, the protrusion 206 contacts the cam 202 and moves upward along the curved groove 2024. As the cam 202 rotates, when the protrusion 206 moves to the highest point of the central column 2023 of the cam 202, the cam 202 lifts the protrusion 206, the protrusion 206 lifts the spring 204, and the synchronization pin 207 is lifted. At this time, the guide part 300 moves left and right asynchronously; at this time, the left and right guide seats 301 are in a closed state; when the first arc-shaped boss 2021 on the cam 202 contacts the first adjusting column 304 set on the left, the first adjusting column 304 set on the left moves inward along the inclined surface of the first arc-shaped boss 2021, and then the first adjusting column 304 set on the left moves inward along the inclined surface of the first arc-shaped boss 2021. An adjusting column 304 drives the left guide seat 301 to rotate counterclockwise on the left fixed column 303, that is, the left guide part 300 is opened, and the reset spring 308 is in a stretched state; at this time, the cam 202 continues to rotate, and when the second arc-shaped boss 2022 contacts and squeezes the first adjusting column 304 set on the right, the right guide part 300 is opened (the process is the same as the opening process of the left guide part, which is not repeated here), at this time, the left guide part 300 and the right guide part 300 are both in an opened state and the spring 308 is still in a stretched state; when the cam 202 continues to rotate until the first arc-shaped boss 2021 is separated from the first adjusting column 304 set on the left, the cam 202 stops rotating, and at this time, after the first adjusting column 304 set on the left loses pressure, the left guide seat 301 starts to rotate clockwise under the tension of the spring 308, that is, the left guide seat 301 is reset, and at this time, the right guide seat 301 is still in an opened state. This state is the chamfering mode. After the lens chamfering is completed, the cam 202 rotates clockwise from the current position. When the first arc-shaped boss 2021 contacts the second microswitch 203, the second microswitch 203 closes and feeds back an electrical signal to the control system. The control system further stops driving the first motor 201, and the cam 202 further stops rotating, that is, the guide part 300 and the mode selection part 200 return to zero position.

[0028] The slotting mode is divided into adjustable distance slotting mode and symmetrical slotting mode;

[0029] When the symmetrical grooving mode is selected (the so-called symmetrical grooving means that the grooving position is in the center of the side of the lens, also known as proportional grooving), a command is sent to the first motor 201 through the program to drive it to start rotating counterclockwise. When the second arc-shaped boss 2022 first contacts the first adjusting column 304 on the left and squeezes it, the first adjusting column 304 on the left moves inward, and the first adjusting column 304 on the left drives the left guide seat 301 to rotate counterclockwise on the left fixed column 303, that is, the left guide part 300 is opened. At this time, because the synchronization pin 207 is in the groove of the left and right adjustment disks 302, when the left guide part is opened, the left adjustment disk 302 squeezes the synchronization pin 207 to drive the synchronization pin 207 to move forward in the adjustment groove 208, and further the synchronization pin 207 squeezes the right adjustment disk 302 to drive the right adjustment disk 302 to rotate clockwise, thereby realizing the synchronous opening of the left and right guide parts. When the lens falls to the same height as the guide wheel 307, the first motor 201 starts to rotate clockwise, that is, the cam 202 starts to rotate clockwise, that is, the left and right guide parts 300 start to close, and then clamp the lens. Because the slotting grinding wheel is directly below the symmetry axis of the left and right guide parts 300, the center position of the side of the lens contacts the grinding wheel and starts processing during lens processing. This is a symmetrical slotting mode. After the processing is completed, the left and right guide parts 300 are reset. The reset process can be performed in reverse order with the above process, that is, the cam 202 first rotates clockwise to drive the left and right guide parts 300 to open. When the lens leaves the same height as the guide wheel 307, the cam 202 rotates counterclockwise to drive the left and right guide parts to close.

[0030] When the adjustable distance slotting mode is selected (the so-called adjustable distance slotting mode means that the slotting position is adjustable), the initial operation process is the same as the chamfering mode and will not be described in detail here. When the left guide seat 301 is in a closed state and the right guide seat 301 is in an open state, the lens is lowered to the same height as the guide wheel 307, and the first motor 201 continues to rotate clockwise, that is, the cam 202 rotates clockwise. When the second arc-shaped boss 2022 is separated from the first right adjustment column 304, the left and right guide parts 300 are both in a closed state. During this process, the left guide part 300 is always in a closed state, and the right guide part 300 is in a process of gradually closing from an open state. Because the lens falls at a position that is always on the chamfering grinding wheel, the lens is always in a closed state. When the right guide part 300 contacts the lens and continues to close, that is, the right guide part 300 will drive the lens to gradually move above the slotted grinding wheel. At this time, by controlling the closing angle of the right guide part 300, that is, controlling the position of the lens above the slotted grinding wheel, the purpose of achieving the adjustable distance of the lens slot is achieved. The closing angle of the right guide part 300 is controlled by the contact position of the cam 202 and the right first adjustment column 304, that is, controlled by the rotation angle of the cam 202. The formula of the closing angle of the right guide part 300, that is, the lens slot position and the rotation angle of the cam 202 is:

[0031]

[0032] The displacement is the distance that the lens moves from the falling position following the right guide part 300; is the rotation angle of the cam 202.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any indirect modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A control device for fine processing of eyeglass lenses, characterized in that: The invention comprises a control system, a slotting control unit (100), a mode selection unit (200), a guide unit (300) and a grinding wheel unit (400); the slotting control unit (100) and the grinding wheel unit (400) are fixed on a main machine of an eyeglass lens finishing device; and the mode selection unit (200) and the guide unit (300) are fixed on the slotting control unit (100).

2. A control device for finishing eyeglass lenses according to claim 1, characterized in that: The slotting control unit (100) comprises a bottom plate (104), a motor mounting column (109) and a micro switch frame (105) are fixed on the bottom plate (104), a first micro switch (106) is provided on the micro switch frame (105), the micro switch frame (105) is connected to a guide motor frame (107), the guide motor frame (107) is connected to a slot depth control frame (101) via a motor frame fixing column (108), the slot depth control frame (101) is connected to a lens bracket (111), and the motor mounting column (109) is connected to a slot depth linear motor (110); The groove depth control frame (101) is connected to a groove depth rotating shaft (102), and a bearing (103) is provided on the groove depth rotating shaft (102).

3. A control device for finishing eyeglass lenses according to claim 2, characterized in that: The mode selection unit (200) comprises a first motor (201) and a second micro switch (203) arranged on a guide motor frame (107), and a reed fixing column (205) arranged on a groove depth control frame (101); the first motor (201) is connected to a cam (202); the reed fixing column (205) is connected to a reed (204); and the reed (204) is provided with a convex point (206), a synchronization pin (207) and an adjustment groove (208).

4. A control device for finishing eyeglass lenses according to claim 3, characterized in that: The guide part (300) has the same structure and is symmetrically arranged on the left and right, comprising a guide seat (301), a fixing column (303) and a guide arm (306) being provided on the guide seat (301), an adjusting disk (302) being provided on the fixing column (303), a first adjusting column (304) and a second adjusting column (305) being provided on the adjusting disk (302), springs (308) being provided on the left and right two second adjusting columns (305), and a guide wheel (307) being provided on the guide arm (306).

5. A control device for finishing eyeglass lenses according to claim 4, characterized in that: The cam (202) comprises a first arc-shaped boss (2021) and a second arc-shaped boss (2022) arranged on both sides, and a central column (2023) arranged in the center, and a curved groove (2024) is provided on the central column (2023).

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