Measuring jig for sheet-shaped workpiece

Abstract

The utility model relates to the technical field of measuring equipment, and discloses a measuring jig for a sheet-shaped workpiece. The measuring jig comprises a jig bottom plate and a jig cover plate. A plurality of supporting ribs are longitudinally and transversely arranged on the jig bottom plate in a staggered mode, a plurality of first receding cavities are formed between the supporting ribs, a plurality of limiting columns arranged in rows are arranged on the supporting ribs at intervals, and a station used for bearing sheet-shaped workpieces is formed between every two rows of limiting columns. The jig cover plate is arranged on the jig bottom plate; a plurality of connecting ribs are longitudinally and transversely arranged on the jig cover plate in a staggered mode, a plurality of second receding cavities are formed among the connecting ribs, and a plurality of limiting grooves matched with the limiting columns are formed in the connecting ribs at intervals; the projection area of the second receding cavity is smaller than the area of the sheet-shaped workpiece. According to the measuring jig, the flattened sheet-shaped workpiece can be directly placed on measuring equipment for measurement, the corners of the sheet-shaped workpiece are prevented from being warped again, and meanwhile the measuring efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to measuring equipment technical field, concretely is a kind of measuring fixture for sheet workpiece. BACKGROUND

[0002] Thin film patch is a kind of ultra-thin sheet shape made of plastic, adhesive, rubber or other materials. Thin film is scientifically explained as: two-dimensional material formed by atoms, molecules or ions deposited on the surface of substrate, such as optical thin film, composite thin film, superconducting thin film, polyester film, nylon film, plastic film, etc. Thin film is widely used in electronic and electrical appliances, machinery, printing and other industries.

[0003] With the continuous development of thin film patch technology, the accuracy of thin film thickness and size is an important indicator to measure the performance of thin film. The existing methods for detecting thin film thickness and size include interference method, optical density measurement method and laser measurement method. The thickness of thin film patch itself is thin, especially the long strip-shaped thin film patch will have a certain warping degree in natural state. Therefore, it is necessary to place the thin film patch in a flat state during measurement. In traditional measurement technology, the thin film patch is first flattened by jig or other tools before measurement to ensure the accuracy of measurement. However, it is difficult to avoid the edge and corner of the thin film patch from warping again when the traditional jig is removed after flattening the thin film patch, which ultimately affects the measurement accuracy of the thin film patch.

[0004] Therefore, there is an urgent need for a measuring jig for sheet workpiece to solve the above problems. INVENTION CONTENTS

[0005] Based on the above, the purpose of the utility model is to provide a measuring jig for sheet workpiece to solve the problem of edge and corner warping of thin film patch again when the traditional jig is removed after flattening the thin film patch for measurement.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model provides a measuring jig for sheet workpiece, which comprises:

[0008] A jig bottom plate is provided, and a plurality of support ribs are arranged longitudinally and transversely on the jig bottom plate. A plurality of first void cavities are formed between the plurality of support ribs. A plurality of limiting columns are arranged in columns on the support ribs. A work station for carrying sheet workpiece is formed between every two columns of limiting columns.

[0009] A jig cover plate is arranged above the jig bottom plate and is used for pressing the sheet-shaped workpiece; a plurality of connecting ribs are arranged longitudinally and transversely on the jig cover plate and are staggered with each other, a plurality of second emptying cavities are formed between the connecting ribs, and a plurality of limiting grooves matched with the limiting columns are arranged on the connecting ribs at intervals.

[0010] The projection area of the second emptying cavity is smaller than the area of the sheet-shaped workpiece.

[0011] As an optional technical scheme of the measuring jig for the sheet-shaped workpiece, a plurality of air suction holes are arranged on the supporting rib at intervals, an air cavity connecting seat is arranged on the jig bottom plate, a first air outlet hole is arranged on the air cavity connecting seat, and the first air outlet hole and the air suction hole are in conductive connection.

[0012] As an optional technical scheme of the measuring jig for the sheet-shaped workpiece, a second air outlet hole is arranged on the jig bottom plate, the second air outlet hole and the air suction hole are in conductive connection, the first air outlet hole penetrates from the side surface of the air cavity connecting seat to the bottom surface of the air cavity connecting seat and is in conductive connection with the second air outlet hole.

[0013] As an optional technical scheme of the measuring jig for the sheet-shaped workpiece, the air cavity connecting seat is made of strong magnetic material, and the first air outlet hole is in magnetic connection with an external vacuum pump.

[0014] As an optional technical scheme of the measuring jig for the sheet-shaped workpiece, the bottom surface of the jig bottom plate is provided with an air flow groove in conductive connection with the second air outlet hole and the plurality of air suction holes.

[0015] As an optional technical scheme of the measuring jig for the sheet-shaped workpiece, an air cavity cover plate is arranged below the jig bottom plate, and a plurality of third emptying cavities matched with the first emptying cavities are arranged on the air cavity cover plate.

[0016] As an optional technical scheme of the measuring jig for the sheet-shaped workpiece, a plurality of threaded holes are arranged at the circumferential edge position of the jig bottom plate, and the jig bottom plate and the air cavity cover plate are sealingly connected through screw rod locking.

[0017] As an optional technical scheme of the measuring jig for the sheet-shaped workpiece, the two side edges of the jig bottom plate and the air cavity cover plate are respectively provided with emptying positions.

[0018] The measuring jig for the sheet-shaped workpiece has the following beneficial effects:

[0019] The utility model provides a kind of for sheet workpiece's measuring fixture, the measuring fixture includes jig base plate and jig cover plate;Multiple support ribs are arranged in longitudinal direction and transverse direction each other on jig base plate, multiple first emptying cavities are formed between multiple support ribs, multiple limit posts arranged in column are arranged at interval on support rib, and a station for carrying sheet workpiece is formed between every two columns of limit posts;Jig cover plate is located above jig base plate, for pressing sheet workpiece;Multiple connecting ribs are arranged in longitudinal direction and transverse direction each other on jig cover plate, multiple second emptying cavities are formed between multiple connecting ribs, and multiple limit slots matched with limit post are arranged at interval on connecting rib;Wherein, the projection area of second emptying cavity is less than the area of sheet workpiece.

[0020] Under the above structure, the sheet workpiece to be measured is placed on the station between every column of limit posts, the jig cover plate is covered on the jig base plate, the limit post is inserted into the corresponding limit slot, so that the jig cover plate can be accurately pressed with the jig base plate, and the limit post can also position multiple sheet workpieces to prevent displacement between multiple sheet workpieces;Since the projection area of second emptying cavity is less than the area of sheet workpiece, therefore, connecting rib can press the circumferential edge of sheet workpiece, to prevent the edge corner position of sheet workpiece from being warped, by setting suction hole on jig base plate, the suction hole is adsorbed to sheet workpiece by the negative pressure airflow provided by external vacuum pump, to further increase the flattening effect on sheet workpiece;The measuring fixture does not need to be taken out after sheet workpiece is flattened, and the measuring fixture loaded with sheet workpiece can be directly placed on measuring equipment for measurement, so that the problem of edge corner position being warped when sheet workpiece is taken out after being flattened does not occur, however, the setting of first emptying cavity and second emptying cavity facilitates the simultaneous measurement of upper and lower two surfaces of sheet workpiece by measuring equipment, to improve measurement efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is overall structure schematic view of the measuring fixture for sheet workpiece in the utility model embodiment;

[0022] Figure 2 It is structure schematic view of jig base plate in the utility model embodiment;

[0023] Figure 3 It is bottom view of jig base plate in the utility model embodiment;

[0024] Figure 4 It is structure schematic view of air cavity cover plate in the utility model embodiment.

[0025] In the drawing:

[0026] 1, jig bottom plate; 10, support rib; 101, suction hole; 11, first avoidance cavity; 12, limiting column; 13, sheet-shaped workpiece; 14, second air outlet; 15, air flow groove; 16, threaded hole; 17, positioning column;

[0027] 2, jig cover plate; 20, connecting rib; 21, second avoidance cavity; 22, limiting groove;

[0028] 3, air cavity connecting seat; 30, first air outlet; 4, air cavity cover plate; 40, third avoidance cavity; 5, avoidance position. DETAILED DESCRIPTION

[0029] The utility model will be described in further detail below in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all structures.

[0030] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] In the description of the embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model.

[0033] In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more than two. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0034] As Figures 1-4 Indicated, the utility model provides a kind of for sheet workpiece's measuring fixture, the measuring fixture includes jig base plate 1, and multiple support ribs 10 are arranged in longitudinal direction and transverse direction and are staggered with each other on jig base plate 1, multiple first emptying cavities 11 are formed between multiple support ribs 10, multiple limit posts 12 arranged in column are interval provided on support rib 10, and a station for carrying sheet workpiece 13 is formed between every two columns of limit posts 12;Jig cover plate 2 is located above jig base plate 1, for pressing sheet workpiece 13;Multiple connecting ribs 20 are arranged in longitudinal direction and transverse direction and are staggered with each other on jig cover plate 2, multiple second emptying cavities 21 are formed between multiple connecting ribs 20, and multiple limit grooves 22 matched with limit post 12 are interval provided on connecting rib 20;Wherein, the projection area of second emptying cavity 21 is less than the area of sheet workpiece 13.

[0035] The measuring fixture for sheet workpiece of the utility model places sheet workpiece 13 to be measured on the station between every column of limit posts 12, then presses jig cover plate 2 on jig base plate 1, limit post 12 is inserted into corresponding limit groove 22, so that jig cover plate 2 can be accurately pressed with jig base plate 1, and limit post 12 can also position multiple sheet workpieces 13, to prevent displacement between multiple sheet workpieces 13;Since the projection area of second emptying cavity 21 is less than the area of sheet workpiece 13, therefore, connecting rib 20 can press the circumferential edge of sheet workpiece 13, to prevent the edge corner position of sheet workpiece 13 from being warped, by setting suction hole 101 on jig base plate 1, suction hole 101 is adsorbed to sheet workpiece 13 by the negative pressure airflow provided by external vacuum pump, to further increase the flattening effect on sheet workpiece 13;The measuring fixture does not need to be taken out after flattening sheet workpiece 13, and can directly place the measuring fixture carrying sheet workpiece 13 on measuring equipment for measurement, so that the problem of edge corner position being warped when taking out sheet workpiece 13 after being flattened does not occur, however, the setting of first emptying cavity 11 and second emptying cavity 21 facilitates the simultaneous measurement of the upper and lower two surfaces of sheet workpiece 13 by measuring equipment, to improve measurement efficiency.

[0036] Specifically, as Figure 1As shown in the drawings, the shapes and sizes of the plurality of second avoidance cavities 21 in each row are the same, while the shapes and sizes of the second avoidance cavities 21 in each column are different, and the plurality of second avoidance cavities 21 in each column correspond to a work position of the sheet-shaped workpiece 13. In this embodiment, there are five columns of second avoidance cavities 21. The connecting ribs 20 divide the second avoidance cavities 21 into regions, and when the jig cover plate 2 is closed on the jig base plate 1, the connecting ribs 20 press the sheet-shaped workpiece 13 in each work position. Each second avoidance cavity 21 is provided with a limiting groove 22, which is inserted into the corresponding limiting column 12 when the jig cover plate 2 is closed on the jig base plate 1 to accurately position the sheet-shaped workpiece 13.

[0037] In this embodiment, as shown in the drawings, Figure 2 and Figure 3 the shapes and sizes of the plurality of first avoidance cavities 11 in each row are the same, while the shapes and sizes of the first avoidance cavities 11 in each column are different, and two columns of limiting columns 12 form a work position for carrying the sheet-shaped workpiece 13. The supporting ribs 10 are used to support the sheet-shaped workpiece 13. In this embodiment, there are five columns of work positions for carrying the sheet-shaped workpiece 13. Of course, the number of work positions can be adjusted according to actual production applications. In this embodiment, five columns of work positions are provided, and their width is just suitable for the palm of an adult to grip, which improves the practicality of the measuring jig. On the other hand, the five columns of work positions can accommodate five sheet-shaped workpieces 13 at the same time for flattening and measuring, which improves the work efficiency of the measuring jig. The limiting columns 12 can position the five sheet-shaped workpieces 13 in the work position to prevent displacement between the sheet-shaped workpieces 13, which can affect the measurement results of the measuring equipment.

[0038] Further, one end of the jig base plate 1 forms a mounting portion (not labeled in the drawings), and the mounting portion is provided with a gas cavity connecting seat 3. The gas cavity connecting seat 3 is provided with a first gas outlet hole 30, which penetrates from the side of the gas cavity connecting seat 3 to the bottom of the gas cavity connecting seat 3. The mounting portion is provided with a second gas outlet hole 14 and a positioning column 17, and the bottom of the gas cavity connecting seat 3 is provided with a corresponding positioning hole. When the gas cavity connecting seat 3 is installed on the mounting portion, the positioning column 17 is inserted into the positioning hole, and the first gas outlet hole 30 and the second gas outlet hole 14 are connected in communication. Each column of supporting ribs 10 is provided with a plurality of suction holes 101, and the bottom surface of the jig base plate 1 is provided with a plurality of air flow grooves 15. The plurality of suction holes 101 are connected in communication with the first gas outlet hole 30 through the plurality of air flow grooves 15. As shown in the drawings, Figure 4As shown, the lower part of the jig base plate 1 is provided with a gas cavity cover plate 4, and the gas cavity cover plate 4 is provided with a plurality of third air avoiding cavities 40 matched with the shape and size of the first air avoiding cavity 11. The circumferential edge of the jig base plate 1 is provided with a plurality of threaded holes 16. The jig base plate 1 and the gas cavity cover plate 4 are connected and sealed by screw locking. Of course, the connection between the jig base plate 1 and the gas cavity cover plate 4 can also be laser welded and sealed. In this way, the gas cavity cover plate 4 can tightly fit the airflow groove 15, so as to form a sealed negative pressure system between the first air outlet hole 30 and the plurality of air suction holes 101.

[0039] Specifically, the gas cavity connecting seat 3 is made of strong magnetic material (such as neodymium iron boron magnet). The gas cavity connecting seat 3 is connected with the external vacuum pump through the first air outlet hole 30 in a magnetic suction mode. In this way, the quick plugging of the vacuum pump insertion device to the gas cavity connecting seat 3 is realized, so as to facilitate the taking and placing of the measurement jig as a whole from the work station of the measuring equipment, improve the operability of the measurement jig, and effectively absorb the sheet-shaped workpiece 13 under the pressing action of the jig cover plate 2, so as to ensure that each position of the sheet-shaped workpiece 13 is in a relatively horizontal state, and improve the measurement accuracy of the sheet-shaped workpiece 13.

[0040] In the embodiment, when the measurement jig is placed in the work station of the measuring equipment to measure the sheet-shaped workpiece 13 carried thereby, the measuring equipment can measure the upper and lower surfaces of the sheet-shaped workpiece 13 at the same time through the second air avoiding cavity 21 and the third air avoiding cavity 40, thereby increasing the measurement efficiency. The jig base plate 1 and the gas cavity cover plate 4 are respectively provided with air avoiding positions 5 at the two side edges. When it is necessary to replace the sheet-shaped workpiece 13 on the jig base plate 1, an operator can use one hand to grab the jig cover plate 2 through the two air avoiding positions 5 to quickly take and place the jig cover plate 2, thereby improving the efficiency of replacing the sheet-shaped workpiece 13.

[0041] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application is disclosed in the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the present application. Any simple modification, equivalent change and modification of the above embodiment within the scope of the present application are all within the scope of the present application.

Claims

1. A measuring fixture for sheet-like workpieces, characterized in that, include: The fixture base plate has multiple support ribs arranged longitudinally and laterally in an alternating pattern. Multiple first clearance cavities are formed between the multiple support ribs. Multiple limiting posts are arranged in rows on the support ribs at intervals. A station for supporting sheet-like workpieces is formed between every two rows of limiting posts. A fixture cover plate is disposed above the fixture base plate and is used to press sheet-shaped workpieces; multiple connecting ribs are arranged longitudinally and transversely on the fixture cover plate, and multiple second clearance cavities are formed between the multiple connecting ribs; multiple limiting grooves that match the limiting posts are provided on the connecting ribs at intervals. The projected area of ​​the second cavity is smaller than the area of ​​the sheet-like workpiece.

2. A measuring fixture for sheet-like workpieces according to claim 1, characterized in that, The support rib is provided with a plurality of air intake holes at intervals, and the base plate of the fixture is provided with an air chamber connecting seat. The air chamber connecting seat is provided with a first air outlet hole, and the first air outlet hole and the air intake hole are connected in a conductive manner.

3. A measuring fixture for sheet-like workpieces according to claim 2, characterized in that, The fixture base plate is provided with a second air outlet, which is connected to the air intake. The first air outlet extends from the side of the air chamber connecting seat to the bottom surface of the air chamber connecting seat and is connected to the second air outlet.

4. A measuring fixture for sheet-like workpieces according to claim 3, characterized in that, The air chamber connector is made of a strong magnetic material, and the first air outlet is magnetically connected to the external vacuum pump.

5. A measuring fixture for sheet-like workpieces according to claim 4, characterized in that, The bottom surface of the fixture base plate is provided with an airflow groove that connects to the second air outlet and the plurality of air intake holes.

6. A measuring fixture for sheet-like workpieces according to claim 5, characterized in that, An air chamber cover is installed below the base plate of the fixture, and the air chamber cover is provided with a plurality of third air chambers that match the first air chamber.

7. A measuring fixture for sheet-like workpieces according to claim 6, characterized in that, The fixture base plate is provided with several threaded holes at its circumferential edge, and the fixture base plate and the air chamber cover plate are sealed together by screw locking.

8. A measuring fixture for sheet-like workpieces according to claim 7, characterized in that, The fixture base plate and the air chamber cover plate are provided with clearance positions on both sides.

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