JPS58120462A - Apparatus for core pulling-out of specktacle lens and fixing holding part thereon - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a device for centering a spectacle lens and for fixing a holding part on the lens, comprising a base frame and a vertical guide column arranged on the base frame. and,
The present invention has a vertically movable and rotatable sleeve, and the sleeve is connected to a pivot arm supporting a holding part.

For example, Federal Republic of Germany Utility Model Registration No. 8061865
．． No. 6, for centering a spectacle lens, comprising a bearing for supporting a spectacle lens and a vertically movable and pivotable support arm for the holding part (block or suction device) to be attached. and devices for fixing a holding part on the lens are known, in which the support arm is under the action of a spring that presses or pulls the arm into its upper or lower end position. Furthermore, in this case a central guide post is used, around which the support arm can pivot.

In the case of the known device, the pivotable arm cannot be lowered exactly vertically onto the lens. This is because the height-position movable and pivotable sleeve or bushing supporting the arm extends along the guide column in the direction of rotation.
This is because the sleeve is guided by play in the circumferential direction.

Moreover, all angular deflections of the arm are based on the metamorphic ratio of the distance between the holding part of the swivel arm and the guide post to the distance between the guide part of the swivel arm and the guide post:
This causes errors in the attachment of the holding part on the lens.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to eliminate the above-mentioned disadvantages and to provide, with simple measures and without significant construction time and effort, the holding part can be aligned precisely in a vertically preset straight line. can be lowered along the eyeglass lens onto the eyeglass lens, so that the holding part occupies the desired exact position on the eyeglass lens, with which the eyeglass lens is loaded into the edge grinder and here The object of the present invention is to enable circumferential and cutting surface grinding to be performed on the circumferential surface of a spectacle lens. Furthermore, it is provided that a play-free lowering of the sleeve with the support arm can be carried out with an adjustable force by the motor.

In order to solve this problem, according to the invention, a rotational moment is applied to the sleeve when it moves in the longitudinal direction relative to the guide column, so that the guide edge of the sleeve is guided by the guide column. The parts were held together so that they slid into contact without play.

The present invention provides, upon lowering of the holding part and the vertically movable and rotatable sleeve connected thereto, a rotational moment on the sleeve, which causes the sleeve to be disposed on the guide column during the lowering movement. It is based on the idea that the pin is always in contact with the pin. When the sleeve is pushed down against the spring pressure, it uses the pins and the slanted slots to perform said rotational movement which compensates for the play of the sleeve.

The invention will now be explained in detail with reference to the illustrated embodiments.

The basic frame 1 of the device consists of two parts, namely a casing part 2 which supports the spectacle lens and a part 3 which supports the guide column, which will be described below, which parts are connected to one another.

The casing part 2 of the basic frame has a light source 4 inside, and above the light source a transparent cover 5 is arranged, through which the light of the light source 4 can be emitted upwards. Advantageously arranged in a triangular manner, the cover 5 is provided with a bar-shaped support 7 with a rubber cap 6;
As a result, the spectacle lens can be placed with its inner surface on the rubber cap and be slid on the rubber cap in all directions in order to obtain the desired centering.

Spectacle lenses may also be rotated to bring the joint or cylinder axis to the desired position.

The base frame 10 part 3 has an intermediate bottom 8 with a hole 9 through which a pin-like end 10 of a vertical guide column 11 passes.

By means of the shoulder 12 and the nut 13, the guide column 11 is held in its position against relative rotation. For this reason,
In the guide pin 11, the end 14 of the guide pin 15 is inserted into the bore 16 and held therein at approximately the central height. The upper section of the guide column 11 is surrounded by an intermediate bush 17, which can only be slid in height along the guide column 11. The upper cylindrical section 18 of the intermediate bushing projects upwardly above the guide column and carries at its upper end a shoulder bearing 19 by means of which the push button 20 is connected to the intermediate bushing 17 and It is rotatably coupled in such a way that the intermediate bushing can be rotated, but in this case the push button 20 cannot be rotated as well.

At the upper end of the cylindrical section 18 of the intermediate bushing 17, an arm 21 is arranged in a relatively rotationally fixed manner, which arm supports an optical system 22 at its end and thereby supports a rod-shaped support T. The upper spectacle lens can be observed from above.

The intermediate bushing 17 has a vertical slit 23 through which the guide pin 15 of the guide column 11 penetrates, so that the intermediate bush 17 is guided vertically along the guide column 11. However, relative rotation is not possible. The longitudinal slit 23 extends over the lower section of the intermediate bushing 17, as can be seen in FIGS. 1, 8 and 9.

The intermediate bush 17 is surrounded by a sleeve 24, which is rotatable relative to the intermediate bush 17 and slidable in the longitudinal direction. For this purpose, said sleeve has in its lower section a vertical section 2 extending in the longitudinal direction of the sleeve 24, as can be seen from FIGS.
6 and a section 27 at right angles thereto and extending in the circumferential direction of the sleeve. The free end of the circumferentially extending horizontal slit section 27 is provided with a downwardly directed notch 28 .

The guide pin 15 of the guide column 11 has an outer end 29 so that the guide pin 15 passes through the longitudinal slit 23 of the intermediate bush 17 iM
It protrudes into the right-angled slit 25 so as to protrude into the L-shaped slit 25 of the sleeve 24.

Near the free end of the horizontal section 27 of the circumferentially extending slit 25 of the sleeve nib 24, an elongated hole 30 is provided, which has an inclination β with respect to the horizontal cross section of the sleeve 24. (FIG. 4) and forms an upper guide edge 31 for the pin 32, the inner end of which is retained in the bore 33 of the intermediate bushing 17.

Sleeve 24 and a cylindrical outer part 34 are connected in a relatively non-rotatable and non-slidable manner, to which a pivoting arm 35 is fixed, which pivot arm has a head 36.
At 37, a holding part can be accommodated, which can be pressed onto the surface of the spectacle lens placed on the support 7.

Addition 3 of the intermediate bottom 8 on the basic frame part 3
A pressure spring 39 is disposed between the sleeve 24 and the sleeve 24, and acts to press the sleeve 24 upward.

The upper section of the push spring 39 surrounds the lower region 40 of the intermediate bushing 17 when it assumes a downwardly slid position relative to the sleeve 24;
The ton 32 is located at a position 32 in the inclined elongated hole 31 shown in FIG.
', and the guide pin 15 occupies position 15', respectively.

The segment 270 arc length a in the right-angled slit 25 is:
Corresponding to the projected length of the oblique slot 300, it defines a pivoting movement of the arm 35 over an angle α relative to the stationary arm 21 with the optical system 22.

The mode of operation of the device will be explained below with reference to FIGS. 1, 4 and 9. In the starting position of the device part, the push spring 39 presses the sleeve 24 with the pivoting arm 35 fixed thereon into the upper starting position. In this case, the intermediate bushing 17 is in its uppermost position relative to the guide column 11 and relative to the sleeve 24, the pin 32 occupies a position 32'' in the elongated hole 30, in this case Guide pin 15 occupies position 15'' in cutout 28 (FIG. 4)
It is rotated like this. In this case, swivel arm 3
5 is in an outwardly pivoted and raised position relative to the arm 21 shown in FIGS. 2 and 6. Now when pressure is applied on pushbutton 20 in the direction of arrow 41 (
1), the intermediate bushing 17 is slid downwards within the sleeve 24, in which case the pin 32 slides within the slot 30 to position 32' and the guide pin 15 reaches position 15', so that the sleeve 24 is rotated. Then,
Arm 35 is located above part 3. When further pressure is applied on the push button 20, the guide pin 15 slides in the slit 23 of the intermediate bushing 17 and in the section 26 of the perpendicular slit 25 to the position 15''. is crimped onto the spectacle lens.

In order to accurately position the holding part on the spectacle lens, it is important that the holding part provided on the head 36 can be lowered vertically onto the lens from the raised position without any play and precisely. It is in. As already mentioned, at the beginning of the lowering of the sleeve 24 and the head 36, the pin 32 is in position 32' and the guide pin 15 is in position 15'.

When the push button 20 is pressed down onto the sleeve 24 against the spring pressure of the push spring 39, the tongue 32 is pressed against the upper guide edge 31, so that the sleeve 24 is moved relative to the intermediate bush 17. (arrow P in Figure 9)
and F). As a result, the edge 2 of the slit 23
3a is pressed from one side against the guide pin 15, which is important for the guidance of the pivot arm 35, and the edge 36a in the right-angled slit 250 section 26 is
It is pressed against the guide pin 15 from the other side. In addition, this provides accurate vertical guidance of the sleeve 24 even when the pivot arm 35 moves up and down. Swivel arm 35
is fixedly connected to the sleeve 24 via a support ring 42, which sleeve is surrounded above and below the support ring 42 by sections 43, 44.

As is clear from the above description, the intermediate bushing 17 is only longitudinally displaceable relative to the guide column 11 on the basis of the guide pin 15, whereas the sleeve 24 is
By means of the guide pin 15 in the slot 250 section 26.27, the intermediate bush can be rotated and longitudinally slidable relative to the guide column 11, and the intermediate bush can be moved in the sleeve by means of the elongated hole 30 and the pin 32. It is rotatable and longitudinally slidable relative to 24.

As in the embodiment shown in FIGS. 1 to 9, the 10th
The device shown in FIGS. 17-17 has a guide column 11 whose threaded lower end 51 is also held in a relatively rotationally fixed manner in the base frame. A radial guide pin 15 is located at approximately the center height of the cylindrical guide column 11.
projecting outwardly, the guide pin engages within a sleeve 24 having a diameter. In this case, guide pillar 11
The lower end has a radial bearing 52. The construction of the components 24-27 and 35-37 corresponds to that of the components shown in FIGS. 1-9.

The lower end of the guide column 11 supports a radially outwardly directed pin 53 on the side opposite the vertical section 26 of the right-angled slit 25 .

The sleeve 24 is rotatable within the outer pulley 54,
and is guided longitudinally along the inner wall 55 of the outer bushing. A tooth ring 56 is arranged on the upper edge of the outer bush 54, in which the drive part of the transmission of the clutch or motor is arranged as follows: are engaged so that they can be rotated with controlled speed and force. A slit 5 extending spirally near the tooth ring 56
7 is provided, the slit extending approximately 360 DEG into the outer bushing 54 and in which the pin 53 of the sleeve 24 engages.

The mode of operation of the apparatus according to the embodiment shown in FIGS. 10 to 17 is as follows.

In the starting position of the section shown in FIGS. 14 and 15, the sleeve 24 is positioned relative to the guide post 11 such that the guide pin 15 is located at the closed end of the horizontal section 27 of the perpendicular slit 25. be in position In this position, pin 53
is in contact with the upper closed end of the spiral slit 57, the sleeve 24 is fully extended, and the sleeve 2
The lower end 58 of 4 is located, for example, in the upper region of the guide slot 57. The said position of each part is that both pins 15
．． This is obtained by rotating the outer sleeve 54 in the direction of the arrow P until 53 reaches the aforementioned position. In this position, the swivel arm 35 occupies its uppermost position together with the head 36 and is in an outwardly swiveled position, ie in an angular position of 90° alongside the spectacle lens bearing part.

First of all, move the swivel arm 3 to the height position of the eyeglass lens.
5 and retaining part 36, the outer sleeve 54 is rotated in a direction opposite to the arrow P (
(in the direction of the arrow in FIG. 17). In this case, the pin 53 is initially inserted into the slit 54 shown in FIG.
remains in position at the upper end of the . On the other hand, pin 15
is the 16th section along the horizontal section 27 of the right-angled slit 25, which section 27 transitions into the vertical section 26 of the slit 25.
It slides to the position shown by the solid line in the figure. After the pin 15 has abutted against the edge 26a of the section 26, the pivoting movement of the sleeve 24 ends;
and reaches the height of the eyeglass lens.

Only after this does a downward movement of the pivoting arm with head 36 take place, which on the one hand causes the pin 53 of the sleeve 24 to move in the direction of the arrow S in the guide slot 57 (see FIG. 15) and at the same time. End position 1, in which the pin 15 passes through position 15' and the holding part rests on the spectacle lens.
It is caused by reaching 5'''. For this reason, the speed and mounting force of the motor and the correspondingly pre-connected clutch are variable depending on the shape and strength of the spectacle lens.

In order to ensure a play-free lowering of the holding parts arranged on the swivel arm 35 and the head 36, the horn 15 is fitted as shown in FIGS.
As in the case of the embodiment shown in FIG. A rotational moment is exerted on the guide sleeve 24 to ensure contact.

This is based on the fact that when the outer sleeve 54 rotates in the direction of the arrow in FIG. 17, the pin 53 of the sleeve 24 is guided along the upper edge of the slit 57.

Depending on the inclined position of the tangent line 60 at the contact point, a horizontal component 61 and a vertical component 62 are obtained. horizontal component 6
1 carries the sleeve 24 in the same direction (see the arrow in FIG. 17), thereby moving the sleeve 24 in the direction indicated by the arrow M in FIG.
It acts to cause rotational movement in the direction of. The edge 26a is therefore always in contact with the stationary bin 15, which ensures a play-free lowering of the sleeve 24 and an adjustable speed of the holding part as well as a loading force even in the case of motor drive. be done.

The construction type shown in FIGS. 10 to 17 is such that the spectacle lens material consisting of a concave lens has thick edges but a thin central area, whereas the spectacle lens material consisting of a convex lens It is considered that the lens has a central thick area and a thin line segment. The thicker the spectacle lens, the more important the difference between the central area of the spectacle lens material and the line segment. Therefore, it is extremely important to lower the holding part onto the spectacle lens with a speed and drive force that can be adjusted independently of the operator's subjective force and in relation to the shape and thickness of the spectacle lens. It is. Figure 10~1
The device of FIG. 7 does not merely provide a motorized downward movement of the holding part, but rather makes it possible to adjust the motorized movement as a function of force and speed to meet the above-mentioned set requirements.

[Brief explanation of the drawing]

1 is a vertical cross-sectional view of the device with the pivoting arm being lowered by hand; FIG. 2 is a plan view of the device; FIG. 6 is a side view of the device; and FIG. 4 is a vertically movable and rotatable sleeve. FIG. 5 is a sectional view of the sleeve, FIG. 6 is a side view of the sleeve, FIG. 7 is a sectional view of the intermediate bushing having a vertical slit, and FIG. 8 is a side view of the intermediate bushing. Figure 9 is a schematic diagram showing the mode of operation of each part of the device;
Figure 0, Figure 11, Figure 12, Figure 13, Figure 14, Figure 1
5, 16 and 17 each show a device according to another embodiment of the invention in which the pivot arm is lowered by a motor. 1...Foundation frame, 2...Casing part, 3.
Part, 4... Light source, 5... Cover, 6... Rubber cap, 7... Support part, 8... Intermediate bottom part, 9, 16
゜33... Hole, 10.14.29, 51.58... End, 11... Guide post, 12... Shoulder, 13... Nut, 15... Guide pin, 15', 15", 15
″′, 32′. 32″・position, 17... intermediate bushing, 18, 26°2
7... Division, 19... Shoulder bearing, 20... Push button, 21... Arm, 22... Optical system, 23... Vertical slit, 23a, 26a... Edge, 24... Sleeve, 25.57...Slit, 28...Notch, 3
0... Long hole, 31... Guide edge, 32.53 ・
Bin, 34...Outer portion, 35...Swivel arm, 3
7... Location, 38... Additional part, 39... Pressing spring, 40... Range, 41... Arrow, 42... Support ring,
43, 44...part, 52...radial bearing, 54
...Outer III bushing, 55...Inner wall, 56...Tooth ring, 60...Tangential line, 61.62...Component Fig70 II

Claims (1)

[Claims] 1. A device for centering a spectacle lens and for fixing a holding part on the lens, comprising a base frame, a vertical guide column arranged on the base frame, and a height The sleeve (24) has a positionally movable and rotatable sleeve, and the sleeve (24) is connected to a pivot arm supporting the holding part.
) is subjected to a rotational moment during its longitudinal movement relative to the guide post (11), which causes the guide edge (26a) of the sleeve (24) to move against the guide post (1).
1) A stopper for centering a spectacle lens and for fixing a holding part on the lens, characterized in that it is held so as to slide in contact with it without play along the guide part (bin 15) of Device. 2. Device according to claim 1, characterized in that the rotatable and height-displaceable sleeve (24) is under the action of a spring (39). 6. The guide pillar (11) and the right-angled guide sling) (2
A longitudinally slit intermediate bushing (17) is arranged between the bushing (24) having the bushing and the sleeve (24); ) protruding through a radial bin (
15) or the like, and furthermore the sleeve (24) has an edge or cam part 9 (31) inclined relative to the longitudinal axis of the device, and the sleeve (24) or the spring The radial pinot (32) of the intermediate bushing (17) is inserted into said edge or cam part when pressed down against the pressure.
[Claim 2] A device described in J'Fee. ,4. The bottle (32) of the intermediate bush (17) is
7. Device according to claim 6, which engages in an oblique slot (3o) of the sleeve (24). 5. A pressure spring (39) arranged between the device frame (1) and the sleeve (24) surrounds with its upper section the intermediate bushing (17) in its lowest position. An apparatus according to claim 6. 6. The projected length b) located in the circumferential direction of the sleeve (24) in the inclined elongated hole (30) is
A right-angled guide slint (2) provided in the sleeve (24)
5) The device according to claim 4, which corresponds or approximately corresponds to the length of the circumferentially located section (27) of the device. Z The free end of the circumferential section (27) in said right-angled guide sill (25) is fitted with a downwardly directed locking notch (28).
). 8. Vertical slits in the intermediate bushing (17) (23)
the width of the sleeve (24) and the section (25) located in the longitudinal direction of the sleeve (25)
The width of the slit (26) in the guide column (11) is
7. The device according to claim 6, wherein the thickness of the gills (15) guided through the portions (23, 25) corresponds to each other, taking into account the play between the portions. 9. An outer bushing (54) driveable by a motor is provided, which outer bushing has a helically extending slit (57) in which the radially outwardly directed pin (53) of the three 7' (24) engages. ).) The device according to claim 2. 10. The radially outward fins (of the sleeve (24))
53) is a right-angled slint in the sleeve (24) (
10. The device according to claim 9, wherein the vertical sections (26) of 25) are diametrically or approximately diametrically opposed. 11, a spirally extending slit (57) in the outer bushing
) is 6o0 or approximately 660° on the circumferential surface of the bush.
Apparatus according to claims 1-0 extending over.