Bending test device

Abstract

The utility model relates to the technical field of flexible circuit board production equipment, and discloses a bending test device which comprises a base, a bending bottom plate, a product fixing plate, a bending plate, a bending cover plate and a bending auxiliary mechanism. A rotating shaft is arranged at one end of the bending bottom plate and rotationally arranged on the base through a rotating support. The product fixing plate is detachably arranged on the bending bottom plate through bolts and provided with at least two kidney-shaped holes parallel to each other. And the bending plates are detachably arranged on the bending bottom plate through bolts and are used together with the product fixing plates in groups. The bending cover plate can press a to-be-tested product between the bending plate and the bending cover plate, and the to-be-tested product is partially exposed out of the bending cover plate from the side, close to the rotating shaft of the bending bottom plate, of the bending cover plate. And the bending auxiliary mechanism is used for keeping the angle of the part, exposed out of the bending cover plate, of the to-be-tested product unchanged. According to the bending test device, the bending radius of the test can be changed, and the test of various bending radiuses can be realized through one set of jig.

Description

Technical Field

[0001] The utility model relates to the field of flexible circuit board production equipment, in particular to a bending test device. Background Art

[0002] Flexible printed circuits (FPCs) are bendable and can be folded to avoid components such as batteries and buttons. They are widely used in small electronic products such as mobile phones and smart watches that are small and compact. Before FPCs are shipped, they need to be subjected to a bending test to detect that the performance of the FPCs has not changed after bending, to ensure that the bending will not affect the function of the product. The existing bending test uses a special fixture, and a set of fixtures can only test one product. New products need to customize new fixtures, which is costly and takes up space to store, wasting resources. To this end, it is necessary to design a low-cost bending test device that can be used to test products of different specifications. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a bending test device with an adjustable bending radius, which can be applied to bending tests of products of different sizes.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is as follows: a bending test device, comprising: a base; a folding bottom plate, one end of which is provided with a rotating shaft, which is rotatably arranged on the base through a rotating bracket, and is provided with a plurality of threaded holes; a product fixing plate, which is detachably arranged on the folding bottom plate through bolts, and is provided with at least two waist-shaped holes parallel to each other, and the direction of the waist-shaped holes is perpendicular to the direction of the rotating shaft of the folding bottom plate; a folding plate, which is detachably arranged on the folding bottom plate through bolts, and is used in groups with the product fixing plate. It is arranged on one side of the corresponding product fixing plate; a folding cover plate can be opened and closed on the folding bottom plate, can be covered on the product fixing plate and the folding plate, and the product to be tested is pressed between the folding plate and the folding cover plate, and the product part to be tested is exposed outside the folding cover plate from the side of the folding cover plate close to the rotation axis of the folding bottom plate; a folding auxiliary mechanism is connected to the area where the product to be tested leaks out of the folding cover plate, and is used to keep the angle of the part of the product to be tested that leaks out of the folding cover plate unchanged.

[0005] Compared with the prior art, the beneficial effects of the utility model are as follows: a plurality of threaded holes are provided on the folding bottom plate, parallel waist-shaped holes are provided on the product fixing plate, and the product fixing plate and the folding plate are detachably provided on the folding bottom plate by bolts. The bolts on the product fixing plate and the folding bottom plate can be loosened or tightened so that the product fixing plate can slide along the waist-shaped holes, the spacing between the product fixing plate and the folding plate can be adjusted, and the length of the product to be tested that leaks out of the folding cover plate can be adjusted to achieve the adjustment of the bending radius, thereby adapting to the bending test of products of different sizes and specifications. The bending test device, a set of product fixing plates and folding plates can realize bending tests of multiple different radii, without the need to customize new fixtures for each product, thereby reducing the number of fixtures and saving production costs.

[0006] In the above-mentioned bending test device, the bending auxiliary mechanism includes a bending auxiliary shaft and a weight arranged on the base, the bending auxiliary shaft is arranged on one side of the bending base plate, the bending auxiliary shaft is parallel to the rotation axis of the bending base plate, and the weight is connected to the part of the product to be tested that is exposed outside the folding cover plate through tape, and the tape crosses the bending auxiliary shaft.

[0007] In the above-mentioned bending test device, a tape pressing block is arranged on the side of the folding bottom plate facing away from the rotating shaft, and an end of the tape facing away from the weight is pressed between the tape pressing block and the folding bottom plate.

[0008] In the above-mentioned bending test device, a plurality of restraining grooves are arranged at intervals on the circumferential surface of the bending auxiliary shaft, and the adhesive tape passes through the restraining grooves and crosses the bending auxiliary shaft.

[0009] In the above-mentioned bending test device, the rotating shaft of the bending base plate is connected to the output shaft of the motor.

[0010] In the above-mentioned bending test device, a groove is arranged on the folding bottom plate, and the product fixing plate and the folding plate are arranged in the groove.

[0011] In the above-mentioned bending test device, the folding cover plate is rotatably connected to the folding bottom plate via a hinge.

[0012] In the above-mentioned bending test device, the bending plate is L-shaped, and the product fixing plate is provided with a groove matching the protrusion of the bending plate.

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A top view of a bending test device according to an embodiment of the present invention;

[0015] Figure 2is a working schematic diagram of a bending test device according to an embodiment of the present invention;

[0016] Figure 3 is a cross-sectional view of a folded bottom plate according to an embodiment of the present invention;

[0017] Figure 4 It is a structural schematic diagram of the bending auxiliary porridge according to an embodiment of the present invention;

[0018] Figure 5 A diagram showing the position relationship between a product fixing plate and a folding plate of an embodiment of the present invention when used for a product test;

[0019] Figure 6 A diagram showing the position relationship between the product fixing plate and the folding plate of an embodiment of the present invention when used for testing another product;

[0020] Description of Figure Numbers:

[0021] 100 base, 200 folding bottom plate, 201 tape groove, 210 rotating bracket, 220 tape pressing block, 300 product fixing plate, 400 folding plate, 500 folding cover plate, 600 folding auxiliary mechanism, 610 folding auxiliary shaft, 611 restraining groove, 620 weight, 630 auxiliary shaft bracket. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below. Figure 1 and Figure 2 The embodiment of the utility model provides a bending test device, including a base 100, a folding bottom plate 200, a product fixing plate 300, a folding plate 400, a folding cover plate 500 and a folding auxiliary mechanism 600. One end of the folding bottom plate 200 is provided with a rotating shaft, which is rotatably arranged on the base 100 through a rotating bracket 210, and can be rotated with an edge of the folding bottom plate 200 as the rotating shaft. The surface of the folding bottom plate 200 is provided with a plurality of threaded holes. The product fixing plate 300 and the folding plate 400 are both detachably arranged on the folding bottom plate 200 by bolts, and the two are used in groups. At least two waist-shaped holes parallel to each other are arranged on the product fixing plate 300, and the direction of the waist-shaped holes is perpendicular to the direction of the rotating shaft of the folding bottom plate 200. The folding plate 400 is arranged on one side of the product fixing plate 300. The folding cover plate 500 can be opened and closed and is disposed on the folding bottom plate 200, and can cover the product fixing plate 300 and the folding plate 400. The product to be tested is pressed on the product fixing plate 300 and the folding plate 400, and the part of the product to be tested is exposed outside the folding cover plate 500 from the side of the folding cover plate 500 close to the rotation axis of the folding bottom plate 200. The folding auxiliary mechanism 600 is disposed on one side of the folding bottom plate 200, and is connected to the area of ​​the product to be tested exposed outside the folding cover plate 500, and is used to keep the angle of the part of the product to be tested exposed outside the folding cover plate 500 unchanged.

[0023] When the bending test device is used, the relative position relationship between the product fixing plate 300 and the bending plate 400 can be adjusted by using the multiple bolt holes on the bending bottom plate 200 and the waist-shaped holes on the product fixing plate 300, thereby adjusting the length of the part of the product to be tested exposed outside the bending cover plate 500, thereby achieving different bending radii, such as Figure 5 and Figure 6 As shown, the testing needs of different bending radii of various products can be met through a set of product fixing plate 300 and bending plate 400. The testing of various bending radii can be achieved through a set of jigs, thereby reducing the number of jigs, saving jig storage space and production costs.

[0024] The bending test device of the embodiment of the utility model adjusts the relative position relationship between the product fixing plate 300 and the folding plate 400 according to the bending radius to be tested, and then places the product on the product fixing plate 300 and the folding plate 400. The folding cover plate 500 presses the product on the product fixing plate 300 and the folding plate 400 so that the product portion with the bending radius length is exposed outside the folding cover plate 500, and the exposed portion is connected to the folding auxiliary mechanism 600. The folding auxiliary mechanism 600 keeps the angle of the exposed portion of the product unchanged. By rotating the folding bottom plate 200, the product clamped between the folding cover plate 500 and the folding plate 400 is rotated relative to the exposed portion, so that the exposed and non-exposed parts of the product are bent with the edge of the folding cover plate 500 as the boundary and the folding mark, such as Figure 2 As shown, after the bending is completed, the product is taken down to test its electrical performance to check whether the function of the product is not affected by the bending. It can be understood that the bending auxiliary mechanism 600 can be a structure such as a clip fixedly set on the base 100 or a straightened tape, and the rotation of the folding bottom plate 200 can be manually operated or driven by a motor. When driven by a motor, the output shaft of the motor is connected to the rotating shaft of the folding bottom plate 200.

[0025] Reference Figure 1 and Figure 2 In this embodiment, the folding auxiliary mechanism 600 includes a folding auxiliary shaft 610 and a weight 620. The weight 620 is connected to the exposed part of the product through a tape. The folding auxiliary shaft 610 is arranged on one side of the folding bottom plate 200 through an auxiliary shaft bracket 630. The folding auxiliary shaft 610 is parallel to the rotation axis of the folding bottom plate 200. The tape is straightened under the gravity of the weight 620, so that the exposed part of the product is straightened, thereby ensuring that the angle of the exposed part of the product does not change with the rotation of the folding bottom plate 200, so that the exposed part of the product can be bent with the edge of the folding cover plate 500 as the crease. Figure 4In this embodiment, in order to prevent the tape from moving in the axial direction during the bending process, causing the exposed part of the product to be twisted and damaged, a plurality of restraining grooves 611 are provided on the circumferential surface of the folding auxiliary shaft 610. The width of the restraining grooves 611 should match the width of the tape. The tape passes over the folding auxiliary shaft 610 through the restraining grooves 611. The restraining grooves 611 limit the axial movement of the tape to prevent the product from being twisted. The rotating shaft of the folding bottom plate 200 is provided at both ends of the folding bottom plate 200. The rotating bracket 210 is provided with bearings. The rotating shaft is rotatably connected to the rotating bracket 210 through the bearings.

[0026] Reference Figure 1 and Figure 3 In the present embodiment, in order to facilitate the folding cover plate 500 to cover the product fixing plate 300 and the folding plate 400 smoothly, a groove is provided on the folding bottom plate 200, and the product fixing plate 300 and the folding plate 400 are arranged in the groove. The folding cover plate 500 is rotatably connected to the folding bottom plate 200 through a hinge, one end of the hinge is arranged on the upper end surface of the groove wall of the groove, and the other end is connected to the upper surface of the folding cover plate 500. The height of the groove is preferably the same as the thickness of the folding cover plate 500 and the folding plate 400. When the folding plate 400 and the product fixing plate 300 are installed in the groove, the upper surfaces of the folding plate 400 and the product fixing plate 300 should be coplanar with the central axes of the rotating shafts at both ends of the folding base plate 200, so that during the rotation of the folding base plate 200, the crease of the product can be colinear with the central axis of the rotating shaft, so that the spatial position of the crease remains basically unchanged during the bending process, and the product does not undergo other deformations except bending along the crease during the bending process, thereby avoiding other deformations interfering with the detection results.

[0027] Reference Figure 1 and Figure 3 In this embodiment, in order to prevent the weight 620 from breaking the product, a tape pressing block 220 is provided on the side of the folding bottom plate 200 facing away from the rotating shaft, and the end of the tape facing away from the weight 620 is pressed between the tape pressing block 220 and the folding bottom plate 200 to share part of the pulling force provided by the weight 620 and protect the safety of the product. The tape pressing block 220 is connected to the folding bottom plate 200 by butterfly bolts, and a tape groove 201 for the tape to pass through is provided on one side of the tape pressing block 220. The tape passes through the tape groove 201 and is pressed between the folding cover plate 500 and the folding plate 400 together with the product.

[0028] Reference Figure 5 and Figure 6 In this embodiment, in order to improve the adjustment range between the product fixing plate 300 and the folding plate 400, the folding plate 400 is an L-shaped plate, and the product fixing plate 300 is provided with a groove matching the protruding portion of the folding plate 400. When the protruding portion of the folding plate 400 is embedded in the groove of the product fixing plate 300, it is the minimum bending radius of the set of jigs, such as Figure 5 As shown; Loosen the bolts in the waist-shaped holes on the product fixing plate 300, slide the product fixing plate 300 in the direction of the waist-shaped holes, so that the bolts in the waist-shaped holes are located at the front end of the waist-shaped holes. At this time, it is the maximum bending radius of the set of fixtures, such as Figure 6 As shown, at this time, the rear edge of the product fixing plate 300 and the rear edge of the folding plate 400 should be flush and abut against the groove wall of the groove of the folding bottom plate 200.

[0029] It should be noted that in the description of the present invention, if there are any orientation descriptions, such as up, down, front, back, left, right, etc., the orientations or positional relationships indicated are all based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, "several" means one or more, "more" means two or more, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A bending test device, characterized in that: include: Base (100); A folding bottom plate (200) is provided with a rotating shaft at one end, is rotatably arranged on the base (100) through a rotating bracket (210), and is provided with a plurality of threaded holes; A product fixing plate (300) is detachably mounted on the folding bottom plate (200) by means of bolts, and is provided with at least two waist-shaped holes parallel to each other, wherein the directions of the waist-shaped holes are perpendicular to the direction of the rotation axis of the folding bottom plate (200); A folding plate (400) is detachably mounted on the folding bottom plate (200) by means of bolts, is used in combination with the product fixing plate (300), and is mounted on one side of the corresponding product fixing plate (300); A folding cover plate (500) is disposed on the folding bottom plate (200) in an openable and closable manner, and can cover the product fixing plate (300) and the folding plate (400), so that the product to be tested is pressed between the folding plate (400) and the folding cover plate (500), and a portion of the product to be tested is exposed outside the folding cover plate (500) from a side of the folding cover plate (500) close to the rotation axis of the folding bottom plate (200); The folding auxiliary mechanism (600) is connected to the area where the product to be tested leaks out of the folding cover plate (500), and is used to keep the angle of the part of the product to be tested that leaks out of the folding cover plate (500) unchanged.

2. The bending test device according to claim 1, characterized in that: The folding auxiliary mechanism (600) comprises a folding auxiliary shaft (610) and a weight (620) arranged on the base (100); the folding auxiliary shaft (610) is arranged on one side of the folding bottom plate (200); the folding auxiliary shaft (610) is parallel to the rotation axis of the folding bottom plate (200); the weight (620) is connected to a portion of the product to be tested that is exposed outside the folding cover plate (500) through an adhesive tape, and the adhesive tape crosses the folding auxiliary shaft (610).

3. The bending test device according to claim 2, characterized in that: A tape pressing block (220) is provided on the side of the folding bottom plate (200) facing away from the rotating shaft, and an end of the tape facing away from the weight (620) is pressed between the tape pressing block (220) and the folding bottom plate (200).

4. The bending test device according to claim 2, characterized in that: A plurality of binding grooves (611) are arranged at intervals on the circumferential surface of the auxiliary bending shaft (610), and the adhesive tape passes through the binding grooves (611) and crosses the auxiliary bending shaft (610).

5. The bending test device according to claim 1, characterized in that: The rotating shaft of the folding bottom plate (200) is connected to the output shaft of the motor.

6. The bending test device according to claim 1, characterized in that: The folding bottom plate (200) is provided with a groove, and the product fixing plate (300) and the folding plate (400) are arranged in the groove.

7. The bending test device according to claim 1, characterized in that: The folding cover plate (500) is rotatably connected to the folding bottom plate (200) via a hinge.

8. The bending test device according to claim 1, characterized in that: The folding plate (400) is L-shaped, and the product fixing plate (300) is provided with a groove matching the protrusion of the folding plate (400).

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