Drawing force detection jig

Abstract

The utility model relates to the technical field of drawing force detection equipment, in particular to a drawing force detection jig which comprises a carrying table and a suction head assembly. The surface of the carrying table comprises a detection station of a to-be-detected product, and the suction head assembly is located above the detection station; the suction head assembly comprises a tension sensor and an electromagnet, the tension sensor is connected with the electromagnet, and the electromagnet is used for applying suction force with set force to a bonding piece on the to-be-tested product. According to the utility model, accurate and controllable suction force can be applied to a bonding piece on a to-be-detected product, the bonding force of the bonding piece can be detected more efficiently and accurately, and meanwhile, the bearable suction force limit of the bonding piece can be detected, so that the bonding firmness of the bonding piece can be judged; therefore, the adhesive force detection device can adapt to adhesive force detection of different adhesive pieces, is wider in application range, can realize rapid recording and feedback of detection results, can timely feed back and detect abnormal products, reduces the reject ratio of the products, saves resources, and reduces the production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of pull-out force detection equipment, in particular to a pull-out force detection fixture. Background Art

[0002] The back cover of the laptop screen is fixed to the hinge by glue. The adhesive force is greatly affected by the glue characteristics and process environment. For example, the glue bonding pressure holding temperature and time and the glue exposure time in the environment may cause the glue adhesion to decrease or even fail. Therefore, in order to ensure the reliability of the adhesive force, it is necessary to detect the glue dispensing position of the hinge.

[0003] At present, the shaft pull-out force jig is used for testing. The jig includes a screw head and a tensile gauge, and the shaft body is designed with corresponding screw holes. When testing the pull-out force, the screw head is connected to the screw hole, the screw head is pulled with a tensile gauge, and the tensile force value is read to determine the reliability of the shaft bonding and fixing.

[0004] In the above detection method, screw holes need to be designed on the shaft, which will take up the space of the shaft, and the holes will also affect the strength of the shaft body; and a tapping process needs to be added during the processing of the screw holes, which leads to increased costs; in addition, the dynamometer is operated by manual pulling and has poor stability, which has a certain impact on the detection results. When defective products are produced, information feedback cannot be provided in time, and production of defective products cannot be stopped in time, which leads to waste of resources and increased costs. Utility Model Content

[0005] In order to solve at least the above technical problems existing in the prior art, the utility model provides a pulling force detection fixture.

[0006] On the one hand, the utility model provides a pulling force detection fixture, including a carrier and a suction head assembly; the surface of the carrier includes a detection station for the product to be tested, and the suction head assembly is located above the detection station; the suction head assembly includes a tension sensor and an electromagnet, the tension sensor is connected to the electromagnet, and the electromagnet is used to apply a suction force of a set strength to the adhesive on the product to be tested.

[0007] In some embodiments, a controller is further included, and the controller includes a regulating circuit; the regulating circuit is used to adjust the current value of the electromagnet, thereby adjusting the suction strength of the electromagnet.

[0008] In some embodiments, a scanning component is also included, and the scanning component is located above the detection station; the scanning component is used to scan the label on the product to be tested, so as to obtain the dispensing equipment information of the product to be tested.

[0009] In some embodiments, the surface of the carrier also includes a fixing component; the fixing component is used to fix the product to be tested on the testing station.

[0010] In some embodiments, the fixing assembly includes a first limiting structure and a second limiting structure; the first limiting structure is located on the outside of the detection station, and is used to press the product to be tested against the side end of the product to be tested; the second limiting structure is located above the detection station, and is used to press the product to be tested above the product to be tested.

[0011] In some embodiments, the suction head assembly also includes a bracket base, a bracket and an electromagnet fixing frame; the bracket is arranged on the bracket base, the bracket base is fixedly connected to the surface of the carrier, the tension sensor is connected to the bracket, and the tension sensor is connected to the electromagnet through the electromagnet fixing frame.

[0012] In some embodiments, the electromagnet fixing bracket is detachably connected to the electromagnet.

[0013] In some embodiments, the contact surface between the electromagnet and the adhesive on the product to be tested is a contoured surface, and the shape of the contoured surface is the same as the surface shape of the adhesive on the product to be tested.

[0014] In some embodiments, the carrier further includes a suction display interface and / or a fixture control interface, and the suction display interface and / or the fixture control interface are connected to the controller.

[0015] In some embodiments, an alarm component is also included; the alarm component is connected to the controller and is used to emit sound and light alarm signals.

[0016] The utility model provides a pulling force detection fixture, which can apply precise and controllable suction to the adhesive on the product to be tested through the cooperation of an electromagnet and a tension sensor, so as to more efficiently and accurately test the adhesion of the adhesive, and at the same time can detect the suction limit that the adhesive can withstand, so as to judge the adhesion firmness of the adhesive. Since the suction of the electromagnet is controllable, it can adapt to the adhesion detection of different adhesives and has a wider range of applications. In addition, the utility model can realize rapid recording and feedback of detection results, can timely feedback on abnormal products, reduce product defective rate, save resources, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description below with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, wherein:

[0018] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0019] Figure 1 A schematic diagram of the structure of a pull-out force detection fixture provided in an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the structure of a suction head assembly in a pull-out force detection jig provided in an embodiment of the utility model;

[0021] Figure 3 A diagram showing the use state of the first limiting structure in the pulling force detection fixture provided by an embodiment of the utility model;

[0022] Figure 4 A diagram showing the use status of the second limiting structure in the pulling force detection fixture provided in an embodiment of the utility model.

[0023] In the figure:

[0024] 1: stage; 2: suction head assembly; 3: scanning assembly; 4: fixing assembly;

[0025] 11: Inspection station; 12: Suction display interface; 13: Fixture control interface;

[0026] 21: tension sensor; 22: electromagnet; 23: bracket base; 24: bracket; 25: electromagnet fixing bracket;

[0027] 41: first limiting structure; 42: second limiting structure. DETAILED DESCRIPTION

[0028] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0029] The embodiment of the utility model provides a pulling force detection fixture, including a carrier and a suction head assembly; the carrier is used to carry and fix the product to be tested, the detection operation is completed on the carrier, and the suction head assembly uses an electromagnet to provide pulling force detection.

[0030] The following is a detailed description of the structure of the components of the pull-out force detection fixture provided in the embodiment of the utility model, as well as the connection and matching relationship between the components, in conjunction with the accompanying drawings.

[0031] like Figures 1 to 4As shown, the pull-out force detection fixture provided by the embodiment of the utility model is mainly used to detect the adhesion of adhesive parts fixed by bonding. For example, the back cover of the laptop screen and the hinge are fixed by glue dispensing. The adhesion is greatly affected by the glue properties and the process environment. In order to ensure the reliability of the adhesive force, it is necessary to detect the adhesion degree of the glue dispensing position of the hinge to avoid loose bonding.

[0032] Specifically, the pulling force detection fixture includes a carrier 1 and a suction head assembly 2;

[0033] Among them, the surface of the carrier 1 includes a detection station 11 for the product to be tested. When in use, the product to be tested is placed on the detection station 11, and the suction head assembly 2 is located above the detection station 11, which is used to detect the adhesive parts of the product to be tested. It should be noted here that the adhesive parts can be all parts fixed by bonding, including but not limited to the rotating shaft connected to the back cover of the laptop computer disclosed in the embodiment of the utility model. Bonding and fixing include but are not limited to bonding by glue, glue dots, glue sticks and the like.

[0034] The suction head assembly 2 includes a tension sensor 21 and an electromagnet 22. The tension sensor 21 is connected to the electromagnet 22. The electromagnet 22 is used to apply a suction force of a set strength to the adhesive on the product to be tested. The electromagnet 22 is a general magnet that can generate magnetic suction force after being energized. The tension sensor 21 is used to monitor, control and adjust the suction force of the electromagnet 22 in real time according to the adhesive force required to be detected of the adhesive of the product to be tested, so as to achieve accurate and efficient detection of the adhesive force of the adhesive.

[0035] For example, the adhesion between the back cover of a laptop computer and the hinge is detected by the suction principle of the electromagnet 22. The electromagnet 22 generates suction on the hinge. The hinge is a metal part that can be attracted by the electromagnet 22. The reliability of the hinge adhesion is determined by the suction of the electromagnet 22 that the hinge can withstand.

[0036] In the embodiment of the utility model, it is further described that the pulling force detection fixture also includes a controller, which is connected to the tension sensor 21. At the same time, the controller includes an adjustment circuit, which is connected to the electromagnet 22 and is used to adjust the current value of the electromagnet 22, thereby adjusting the suction strength of the electromagnet 22.

[0037] Specifically, the adjustment circuit can control the magnetic induction intensity of the electromagnet 22 by connecting a rheostat, thereby adjusting the suction force of the electromagnet 22. The adjustable suction force of the electromagnet 22 is convenient for adapting to the adhesion test required by different adhesives, and has a wider applicability.

[0038] Specifically, the calculation formula of the suction force of the electromagnet 22 is as follows:

[0039]

[0040] Where F is the suction force of the electromagnet 22, B is the magnetic induction intensity (unit: T), μ0 is the vacuum magnetic permeability (value = 4π×10 -7 , unit Wb / (A·m)), S is the magnetic pole area (unit m 2 ), N is the number of coil turns, U is the voltage (unit V), R is the winding resistance (unit Ω), and δ is the gap length (unit m).

[0041] For example, the suction head assembly 2 also includes a bracket base 23, a bracket 24 and an electromagnet fixing frame 25; the bracket 24 is arranged on the bracket base 23, the bracket base 23 is fixedly connected to the surface of the carrier 1, the tension sensor 21 is connected to the bracket 24, and the tension sensor 21 is connected to the electromagnet 22 through the electromagnet fixing frame 25. The suction head assembly 2 is mounted on the surface of the carrier 1 through the bracket base 23 and has a certain height. For example, the electromagnet 22 can be a detachable structure with the electromagnet fixing frame 25, and the electromagnet 22 with different suction can be replaced according to the detection requirements. In addition, the detachable connection method is also convenient for the maintenance and repair operation of the electromagnet 22. For example, the electromagnet fixing frame 25 is in the shape of a frame, and the electromagnet 22 can be clamped inside the frame, and the adsorption end of the electromagnet 22 is inserted at the bottom of the frame; or, for example, the electromagnet 22 and the electromagnet fixing frame 25 can also be detachably connected by screw connection or clamping.

[0042] For example, the contact surface between the electromagnet 22 and the adhesive on the product to be tested is a contour surface, and the shape of the contour surface is the same as the surface shape of the adhesive on the product to be tested. The design of the contour surface mainly realizes that the electromagnet 22 and the product to be tested can be contoured and fit, and the contact is more compact, thereby realizing that the suction force of the electromagnet 22 on the product to be tested is more uniform, ensuring stable operation during the detection process. Among them, the detachable connection design between the electromagnet 22 and the magnet fixing frame is also convenient for replacing electromagnets 22 with different contour surfaces.

[0043] Continue to refer Figures 1 to 4 As shown, in the embodiment of the utility model, it is further described that the pulling force detection fixture also includes a scanning component 3, and the scanning component 3 is located above the detection station 11;

[0044] The scanning component 3 is used to scan the label on the product to be tested, which contains the dispensing equipment information, so as to obtain the dispensing equipment information of the product to be tested, and the dispensing equipment information may include but is not limited to the equipment number, model, dispensing time, etc. By scanning the label, the scanning component 3 can quickly identify and record the dispensing equipment information corresponding to the product to be tested. After the test, the test result can be fed back in time. If the test result is abnormal, the corresponding dispensing equipment will be located and identified in time to avoid the same abnormal dispensing equipment from dispensing glue to other equipment again, which effectively saves production and testing time, reduces product defect rate, saves resources, and reduces production costs.

[0045] For example, the scanning component 3 performs non-contact two-way data communication through wireless radio frequency based on radio frequency identification (RFID), and uses wireless radio frequency to read and write recording media (electronic tags or radio frequency cards), thereby achieving the purpose of identifying targets and exchanging data.

[0046] For example, when defective products appear, the alarm component can be used to perform timely alarm operations. The alarm component is connected to the controller and is used to send out sound and light alarm signals. The alarm component can be an alarm that can send out sound and light alarms. The alarm component is connected to the controller and can send out an alarm when abnormalities are detected, which can promptly remind the inspection personnel and equipment maintenance personnel, effectively improving inspection and production efficiency.

[0047] The product to be tested is tested on the carrier 1. During the pull-out force test, the force acting on the product to be tested is relatively large. Therefore, the product to be tested on the carrier 1 needs to be effectively fixed. In the embodiment of the utility model, the product to be tested is fixed by a fixing component 4.

[0048] Continue to refer Figures 1 to 4 As shown, in the embodiment of the utility model, the fixing component 4 is used to fix the product to be tested on the detection station 11. The fixing component 4 mainly plays the role of fixing the product to be tested, and the fixing component 4 includes but is not limited to a fixing fixture or a pressing block, and of course it can also be other fixing components, as long as it can fix the product to be tested on the surface of the carrier 1, and no examples are given here.

[0049] For example, the fixing assembly 4 includes a first limiting structure 41 and a second limiting structure 42, through which the first limiting structure 41 and the second limiting structure 42 realize the clamping and fixing of the product to be tested in the X and Y horizontal directions, and the second limiting structure 42 realizes the clamping and fixing of the product to be tested in the Z direction vertically. Specifically,

[0050] The first limiting structure 41 is located on the outside of the detection station 11, and is used to press the product to be tested against the side end of the product to be tested; the first limiting structure 41 is set along the outer edge of the product to be tested, and is used to clamp or tighten the product to be tested in the horizontal direction; for example, the first limiting structure 41 includes a slider and a linear drive device, the slider is set on the surface of the platform 1, and the linear drive device is set on the surface and bottom of the platform 1. For example, the linear drive device is a linear screw or a telescopic cylinder, etc. When clamping and fixing is required, the slider is moved in the direction of the product to be tested, and multiple sliders cooperate to complete the fixation of the product to be tested.

[0051] The X horizontal direction and the Y horizontal direction are directions parallel to the surface of the stage 1 .

[0052] The second limiting structure 42 is located above the detection station 11 and is used to press the product to be tested above the product to be tested. The second limiting structure 42 is set above the product to be tested and is used to press or tighten the vertical defense line of the product to be tested to prevent longitudinal movement. The second limiting structure 42 can be a pressing block, but is not limited to a pressing block, as long as it can limit the longitudinal movement of the product to be tested.

[0053] For example, the pressing block is connected to a linear drive device, such as a linear lead screw or a telescopic cylinder, and when clamping and fixing is required, the pressing block is lowered and pressed onto the surface of the product to be tested. For example, the pressing block and the linear drive device are arranged at the edge of the product to be tested.

[0054] The Z direction is a direction perpendicular to the surface of the carrier 1 .

[0055] Continue to refer Figures 1 to 4 As shown, in an embodiment of the utility model, the carrier 1 also includes a suction display interface 12 and / or a fixture control interface 13, wherein the carrier 1 is arranged on the top of a box structure, and a controller and other equipment are configured in the box structure, and the suction display interface 12 or the fixture control interface 13 are arranged on the carrier 1, so as to facilitate users to obtain corresponding related information in a timely manner.

[0056] For example, the suction display interface 12 and / or the fixture control interface 13 are connected to the controller. Specifically, the suction display interface 12 and / or the fixture control interface 13 can be a touch screen, which can not only be used to control the operation of the equipment, but also can display the detection data in real time. The suction of the electromagnet 22 can be obtained in real time through the suction display interface 12, so as to effectively judge the adhesion limit of the adhesive, which is convenient for data recording and viewing.

[0057] The utility model provides a pulling force detection fixture, which can apply precise and controllable suction to the adhesive on the product to be tested through the cooperation of the electromagnet 22 and the tension sensor 21, so as to more efficiently and accurately test the adhesion of the adhesive, and at the same time can detect the suction limit that the adhesive can withstand, so as to judge the adhesion firmness of the adhesive. Since the suction of the electromagnet 22 is controllable, it can adapt to the adhesion detection of different adhesives and has a wider range of applications. In addition, the utility model can realize rapid recording and feedback of the detection results, can timely feedback the detection of abnormal products, reduce the product defect rate, save resources, and reduce production costs.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0060] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A pull-out force detection fixture, characterized in that: It comprises a carrier (1) and a suction head assembly (2); The surface of the carrier (1) comprises a detection station (11) for the product to be tested, and the suction head assembly (2) is located above the detection station (11); The suction head assembly (2) comprises a tension sensor (21) and an electromagnet (22); the tension sensor (21) is connected to the electromagnet (22); and the electromagnet (22) is used to apply a suction force of a set strength to the adhesive on the product to be tested.

2. The pull-out force detection jig according to claim 1, characterized in that: Also included is a controller, the controller including a regulating circuit; The regulating circuit is used to regulate the current value of the electromagnet (22), thereby regulating the suction strength of the electromagnet (22).

3. The pull-out force detection jig according to claim 2, characterized in that: It also includes a scanning component (3), wherein the scanning component (3) is located above the detection station (11); The scanning component (3) is used to scan the label on the product to be tested, thereby obtaining the dispensing equipment information of the product to be tested.

4. The pull-out force detection jig according to claim 1, characterized in that: The surface of the carrier (1) also includes a fixing component (4); The fixing component (4) is used to fix the product to be tested on the testing station (11).

5. The pull-out force detection jig according to claim 4, characterized in that: The fixing assembly (4) comprises a first limiting structure (41) and a second limiting structure (42); The first limiting structure (41) is located outside the detection station (11) and is used to press the product to be tested against the side end of the product to be tested; The second limiting structure (42) is located above the detection station (11) and is used to press the product to be tested above the product to be tested.

6. The pull-out force detection jig according to claim 5, characterized in that: The suction head assembly (2) also includes a bracket base (23), a bracket (24) and an electromagnet fixing bracket (25); The bracket (24) is arranged on the bracket base (23), the bracket base (23) is fixedly connected to the surface of the carrier (1), the tension sensor (21) is connected to the bracket (24), and the tension sensor (21) is connected to the electromagnet (22) via the electromagnet fixing frame (25).

7. The pull-out force detection jig according to claim 6, characterized in that: The electromagnet fixing frame (25) is detachably connected to the electromagnet (22).

8. The pull-out force detection jig according to claim 1, characterized in that: The contact surface between the electromagnet (22) and the adhesive on the product to be tested is a contoured surface, and the shape of the contoured surface is the same as the surface shape of the adhesive on the product to be tested.

9. The pull-out force detection jig according to claim 2, characterized in that: The carrier (1) further comprises a suction display interface (12) and / or a fixture control interface (13), and the suction display interface (12) and / or the fixture control interface (13) are connected to the controller.

10. The pull-out force detection jig according to claim 2, characterized in that: Also includes an alarm component; The alarm component is connected to the controller and is used to send out sound and light alarm signals.

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