Hidden positioning device and method for optically capturing glass edges

Abstract

A hidden positioning device for optically capturing the edge of glass comprises a base (6), a clamp (2) mounted on the base, and four claws (3) mounted on the clamp and capable of positioning a glass placed in the clamp or hiding it on the bottom surface of the clamp, the claws being provided with magnets (5) for adsorbing on the clamp, the claws being provided with a pivot mechanism so that they can be switched between positioning and hiding, and the clamp being provided with a negative pressure port for tightly adsorbing the glass to the surface of the clamp by negative pressure. Utilizing the device and method of the present invention, the accuracy of the placement position of each piece of glass can be ensured, thereby reducing scratches on the glass (1); fixing the claws by magnets can ensure that the buckle positions the glass, while also ensuring that there is a gap between the buckle and the glass so that it can move; and by hiding the claws, it can ensure that any detail of the glass edge contour can be perfectly captured and measured.

Description

Technical Field

[0001] The present invention relates to the technical field of glass processing measurement auxiliary instruments, and in particular to a hidden positioning device and method for optically capturing a glass edge. Background Art

[0002] Glass processing requires precise measurement of the shape of the processed glass. The measurement process requires firm positioning to reduce damage to the glass surface and ensure reliable and accurate measurement. This is even more important for measuring the edge contour of the glass. In the existing technology, the positioning method of glass is mostly edge photography and projection measurement, which can be specifically divided into claw positioning method and curved surface contour positioning method. Among them, Figure 1 The jaw positioning shown in the figure has the appropriate force to hold the periphery of the glass workpiece. This can ensure the stability of positioning during each glass placement and measurement process, thereby ensuring measurement consistency and accuracy. However, it has the following disadvantages:

[0003] First, the gap between the jaws and the product cannot be adjusted, and the processing error is difficult to control. For glass, if the jaws are positioned too tightly, it is difficult to take and place, and if the jaws are too loose, the positioning is not accurate.

[0004] Second, during measurement, at least the jaws or part of the jaws on the periphery of the glass may block part of the light source and cover some parts, which limits the measurement of the glass and makes it impossible to capture its complete edge contour.

[0005] In such Figure 2 The existing technology using the curved surface contour positioning method can ensure that the glass edge is fully exposed and the complete edge contour is captured, but it also has the following disadvantages:

[0006] First, the positioning of glass 1 is unstable. The curved surface of the product cannot be consistent with the fixture 2. Moreover, the contour of each piece of glass is different. The curved surface will slip during the bonding process, and the positioning accuracy cannot be guaranteed.

[0007] Second, the proportion of scratches increases during the bonding process. The glass bonding process is a process of sliding between the glass and the fixture. Since the fixture cannot be absolutely smooth, the scratches will be very serious. Summary of the Invention

[0008] In response to the above-mentioned problems existing in the prior art in terms of precise positioning during the glass measurement process, the present invention aims to provide a hidden positioning device and method for optically capturing the edge of the glass, which can ensure the installation reliability and ease of use of the glass during the measurement process, while ensuring that the edge contour of the glass is not affected by the positioning equipment, thereby ensuring accurate and reliable measurement of the edge contour of the glass.

[0009] According to the present invention, a hidden positioning device for optically capturing the edge of glass is provided, comprising a base, a clamp mounted on the base, and four claws mounted on the clamp that can position the glass placed in the clamp or hide it on the bottom surface of the clamp. The claws are provided with magnets for adsorbing the clamp, and the claws are provided with a pivot mechanism so that they can switch between positioning and hiding. The clamp is provided with a negative pressure port for tightly adsorbing the glass to the clamp surface through negative pressure.

[0010] In the above embodiment of the device of the present invention, the clamping claw includes a positioning rod and a movable mounting arm with a 90-degree angle between each other, and the clamping claw is provided with a positioning hole and a magnet mounting groove for fixing the magnet.

[0011] In the above embodiment of the device of the present invention, the pivot mechanism further includes a pin for passing through the positioning hole to mount the claw on the clamp.

[0012] In the above embodiment of the device of the present invention, a negative pressure gas source is further included for delivering gas to the negative pressure port.

[0013] According to another aspect of the present invention, a hidden positioning method for optically capturing a glass edge is provided, comprising the following steps:

[0014] S1) prepare the jaws to position the glass on the fixture;

[0015] S2) vacuum adsorbing and holding the glass on the fixture;

[0016] S3) Hide the claws to the back of the fixture;

[0017] S4) measuring the glass.

[0018] In the above embodiment of the method of the present invention, step S1 includes the following steps: adjusting the claw by a magnet, rotating and fixing the claw on the clamp so that the positioning rod of the claw is perpendicular to the top surface of the clamp, and the rotation and fixing here are achieved by loosening or tightening the pin;

[0019] In the above embodiment of the method of the present invention, step S2 includes the following steps:

[0020] S21) placing the glass on the top surface of the fixture within the four positioning rods;

[0021] S21) Turn on the negative pressure switch to firmly adsorb the glass onto the top surface of the fixture.

[0022] In the above embodiment of the method of the present invention, step S3 includes the following steps:

[0023] S) Rotate the jaws to the bottom of the fixture;

[0024] S) Fix the claws with magnets to ensure they are stable when the clamp rotates.

[0025] In the above embodiment of the method of the present invention, the method further includes the step of installing the assembled fixture on the base.

[0026] The implementation of a hidden positioning device and method for optically capturing the edge of glass provided by the present invention can achieve the following beneficial effects: due to the design of movable claws and vacuum adsorption of glass, the claws can conveniently and accurately position the glass, and when measuring, the claws are flipped and hidden behind the fixture, so that the claws do not affect the projected optical capture of the outer edge contour of the glass. Utilizing the device and method of the present invention, the accuracy of the placement position of each piece of glass can be guaranteed, thereby reducing scratches on the glass; fixing the claws with magnets can ensure that the buckle positions the glass, and a gap can be created between the buckle and the glass, allowing for movement; by hiding the claws, it can be ensured that any details of the glass edge contour can be perfectly captured and measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the clamping jaw positioning used in the existing technology for measuring 3D special-shaped glass;

[0028] Figure 2 A schematic diagram of another prior art method for measuring curved surface contour positioning of 3D special-shaped glass;

[0029] Figure 3 This is a schematic diagram of the structure of a hidden positioning device for optically capturing the edge of glass according to an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of adjusting claws of a hidden positioning device for optically capturing glass edges according to an embodiment of the present invention;

[0031] Figure 5 A schematic diagram of installing glass into the claws in the hidden positioning device for optically capturing the glass edge according to an embodiment of the present invention;

[0032] Figure 6 A schematic diagram of hiding the claws at the bottom of the fixture in the hidden positioning device for optically capturing the glass edge according to an embodiment of the present invention;

[0033] The names and serial numbers of the parts in the figure are: 1-glass (workpiece), 2-fixture, 3-claw, 4-pin, 5-magnet, 6-base, 8-negative pressure port, 9-positioning hole, 10-magnet mounting slot. DETAILED DESCRIPTION

[0034] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] like Figure 3 As shown, in a schematic diagram of a hidden positioning device for optically capturing the edge of glass in an embodiment of the present invention, a base 6 is included, which is used to be fixed on a workbench or equipment to carry and fix the hidden positioning device for optically capturing the edge of glass 1; it also includes a fixture 2, one side of the fixture 2 is in contact with the glass 1 to be measured, and the other side of the fixture 2 can be used to be installed on the base 6, and a port connected to a negative pressure source is provided on the fixture 2, which is used to tightly adsorb the glass 1 on the fixture 2 by accessing the negative pressure; it also includes four claws 3 installed on the fixture 2, each claw 3 has a positioning hole 9 and a magnet 5 mounting groove and a magnet 5 fixedly installed in the magnet 5 mounting groove. Among them, the positioning hole 9, the positioning threaded hole of the fixture 2 and the pin 4 form a pivot, so that the claw 3 can rotate around the pivot, and one end of the rotation is when the claw 3 is in a positioning state ( Figure 5 ), the other end of the rotation is the claw 3 in the hidden state ( Figure 6 The mounting slot for the magnet 5 is used to attach the clamp 2 to the magnet 5, maintaining its stability. Regardless of whether the claw 3 is in the positioned or concealed state, in order for the magnet 5 to function properly, the clamp 2 should be made of a material that can be attracted by the magnet 5, or at least have a magnetically attractable material positioned on the clamp 2 corresponding to the magnet 5.

[0036] In the above Figure 3 In the embodiment shown, the clamp 2 is equipped with four claws 3, each claw 3 is composed of a positioning rod and a movable mounting arm interconnected at a right angle of 90 degrees, that is, the two form a 90-degree angle, wherein the magnet 5 mounting groove is provided on the top surface of the movable mounting arm, for fixing the magnet 5 so that the magnet 5 can adsorb the claw 3 to the clamp 2 when facing the clamp 2; the positioning hole 9 runs through the two sides of the end of the movable mounting arm, for the pin 4, specifically the pin 4 is fixed to the clamp 2 without passing therethrough, so that the claw 3 can rotate with the pin 4 as the pivot, specifically, the positioning rod can be rotated from horizontal to vertical, and when the positioning rod is rotated to horizontal ( Figure 5 ), the positioning rod has been away from the outer edge of the glass 1, that is, the claw 3 is in a hidden state; when the positioning rod is turned to vertical ( Figure 6 ), the positioning rod is close to the edge of the glass 1, which plays a role in positioning the claw 3 of the glass 1, that is, the claw 3 is in a positioning state.

[0037] In the above embodiment, the pin 4 is screwed into the positioning hole 9 , the unthreaded section of the pin 4 passes through the positioning hole 9 of the claw 3 , and the threaded section of the pin 4 at the front end engages with the clamp 2 threaded positioning hole 9 on the clamp 2 .

[0038] In the above embodiment, the magnet 5 mounting groove on the clamping claw 3 for mounting the magnet 5 should be located at a position where the clamping claw 3 contacts the fixture 2 when the clamping claw 3 is in a vertically positioned state.

[0039] In the above embodiment, the number of the claws 3 is four. In other embodiments, the number of the claws 3 may also be three or six, depending on the shape and size of the glass 1 .

[0040] Figure 4-Figure 6 The use process of the hidden positioning device for optically capturing the edge of the glass 1 according to an embodiment of the present invention is given, and the specific implementation process of the positioning method of the present invention is also described.

[0041] The first step is to adjust the claw 3 so that the four positioning rods are perpendicular to the top surface of the clamp 2. The claw 3 is rotated and fixed on the clamp 2 through the magnet 5. The magnet 5 surface is in contact with the bottom surface of the clamp 2. The claw 3 is rotated and fixed through the magnet 5. Figure 4 As shown, the rotation and fixation here can be achieved by loosening or tightening the pin 4;

[0042] The second step is to install the glass 1. The four claws 3 are used to fix the glass 1 on the top surface of the fixture 2. The claws 3 hold the glass 1. The glass 1 falls on the top surface of the fixture 2. The vacuum pump is connected. The negative pressure port 8 on the surface of the fixture 2 is set to continuously suck the glass 1 tightly onto the fixture 2. Figure 5 As shown, the glass 11 is accurately placed on the fixture 2 through the claws 3, and the glass 1 is maintained on the fixture 2 by negative pressure;

[0043] The third step is to hide the claw 3, rotate the claw 3 to the bottom of the clamp 2, and fix the claw 3 with the magnet 5 to ensure that the claw 3 is stable and firm when the clamp 2 rotates. Figure 6 Since the claw 3 is hidden, the measurement of the edge contour of the glass 1 by the claw 3 itself will not be affected in any way, ensuring that the claw 3 is not visible in the vertical direction of all points on the edge of the glass 1. Therefore, the complete edge of the glass 1 can be captured during measurement, ensuring the integrity and accuracy of the measurement.

[0044] Incidentally, the method described may further include installing the assembled clamp 2 on the base 6 .

[0045] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The above-described embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, several variations and improvements can be made, which all fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent of this invention shall be based on the attached claims.

Claims

1. A hidden positioning method for optical capture of glass edges, characterized in that: A hidden positioning device for optically capturing the edge of a glass comprises a base (6), a fixture (2) mounted on the base (6), and a plurality of claws (3) mounted on the fixture (2) and capable of positioning a glass (1) placed in the fixture or hiding it on the bottom surface of the fixture (2); each claw (3) is provided with a magnet (5) for magnetically adsorbing the glass on the fixture (2); each claw (3) is provided with a pivot mechanism so that it can be switched between positioning and hiding; the fixture (2) is provided with a negative pressure port (8) for tightly adsorbing the glass (1) on the fixture surface through negative pressure; The clamping claw (3) comprises a positioning rod and a movable mounting arm with a 90-degree angle between them, a magnet mounting groove (10) is provided on the top surface of the movable mounting arm, and a positioning hole (9) passes through two sides of the end of the movable mounting arm; The pivot mechanism comprises a pin (4) for passing through the positioning hole (9) and engaging with a positioning threaded hole of the clamp (2) to thereby mount the claw (3) on the clamp; The claw (3) rotates with the pin (4) as a pivot. When the positioning rod is turned horizontally, the positioning rod is away from the outer edge of the glass (1), and the claw (3) is in a hidden state. When the positioning rod is turned vertically, the positioning rod is close to the edge of the glass (1), and the claw (3) is in a positioned state. The hidden positioning method of optically capturing the glass edge comprises the following steps: S1) preparing the jaws (3) to position the glass (1) on the fixture (2); S2) vacuum adsorbing and holding the glass (1) on the fixture (2); S3) hiding the jaws (3) on the back of the fixture (2) to allow for measurement of the glass (1); Step S1 comprises the following steps: adjusting the orientation of the claw (3) by means of a magnet (5), and rotating and fixing the claw (3) on the fixture (2) so that the positioning rod of the claw (3) is perpendicular to the top surface of the fixture (2), wherein the rotation and fixation are achieved by loosening or tightening the pin (4); Step S2 includes the following steps: S21) placing the glass (1) on the top surface of the fixture (2) within the positioning rods of the four claws (3); S22) turning on the negative pressure switch, and the negative pressure at the negative pressure port (8) tightly adsorbs the glass (1) onto the top surface of the fixture; Step S3 includes the following steps: S31) rotating the claw (3) to the bottom of the fixture; S32) Fix the claw (3) by the magnet (5) to ensure that the clamp (2) is locked stably when rotating.

2. The hidden positioning method for optical capture of glass edges according to claim 1, characterized in that: The concealed positioning device for optically capturing the glass edge further comprises a negative pressure gas source for delivering negative pressure to the negative pressure port (8) on the clamp (2) directly or via a negative pressure switch.

3. The hidden positioning method for optically capturing the glass edge according to any one of claims 1-2, characterized in that: The number of the claws (3) is 4.

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