Detection mechanism for scissor feet

Abstract

The present invention discloses a detection mechanism for scissor legs, comprising: a detection platform, a plurality of detection holes are arranged on the detection platform, each detection hole is covered with a detection lens, and a detection camera is arranged below the detection platform opposite to each detection lens; a material pulling platform, the material pulling platform is arranged on one side of the detection platform, a material pulling mechanism corresponding to the detection lens is arranged on the material pulling platform, and each detection lens is arranged opposite to the material pulling mechanism corresponding to it along the second direction; a lifting mechanism for driving the material pulling platform to move in a vertical direction is connected below the material pulling platform; a material clamping mechanism, the material clamping mechanism includes a chuck sleeved in a circular hole of an inner scissor frame, and at least one blowing nozzle opposite to an outer scissor frame rotatably pivoted with the inner scissor frame is arranged on the circumference of each chuck, and the material clamping mechanism is arranged above the detection platform and the material pulling platform, and the material clamping mechanism moves along the second direction between the detection platform and the material pulling platform. The detection mechanism can realize automatic detection and improve the product qualification rate.

Description

Technical Field

[0001] The invention relates to the field of keyboard assembly, in particular to a detection mechanism for scissor legs. Background Art

[0002] The assembly of a computer keyboard usually involves installing the scissor feet and keycaps on a keyboard motherboard with circuits. Among them, the scissor feet are a commonly used part, mainly including an inner scissor frame and an outer scissor frame that are crossed and pivotally connected. Providing scissor feet under the keycaps can make the keycaps more stable, rebound quickly, and balance the pressure. Therefore, more and more customers will choose to install scissor feet in the keyboard. When the rotating shaft of the inner scissor frame is inserted into the shaft hole of the outer scissor frame, since the rotating shaft and the shaft hole are very small, invalid insertion is likely to occur during the insertion process, thereby affecting the yield of the product. The existing inspection of the scissor feet after assembly usually uses manual inspection, which has low inspection efficiency, is prone to errors, and has high labor costs. Summary of the invention

[0003] In order to overcome the defects in the prior art, an embodiment of the present invention provides a detection mechanism for scissor legs, which can realize automatic detection of the assembled scissor legs and improve the qualified rate of the product.

[0004] To achieve the above object, the technical solution adopted by the present invention is: a detection mechanism for a scissor leg, wherein the scissor leg comprises an inner scissor frame and an outer scissor frame which are rotatably pivoted, comprising:

[0005] An inspection platform, wherein a plurality of inspection holes are arranged on the inspection platform, each of the inspection holes is covered with an inspection lens, and an inspection camera is arranged below the inspection platform and opposite to each of the inspection lenses;

[0006] A material pulling platform, the material pulling platform is arranged on one side of the detection platform, a material pulling mechanism corresponding to the detection lens is arranged on the material pulling platform, and each detection lens and the corresponding material pulling mechanism are arranged relatively to each other along the second direction; a lifting mechanism for driving the material pulling platform to move in a vertical direction is connected below the material pulling platform;

[0007] The material clamping mechanism includes a chuck which is sleeved in the circular hole of the inner scissors frame, and each of the chucks is provided with at least one blowing nozzle opposite to the outer scissors frame which is rotatably pivoted to the inner scissors frame. The material clamping mechanism is arranged above the detection platform and the material pulling platform, and the material clamping mechanism moves between the detection platform and the material pulling platform along the second direction.

[0008] In the above technical solution, two blowing nozzles are arranged on the peripheral side of each chuck, and the angle between the two blowing nozzles and the center of the chuck is less than 180°.

[0009] In the above technical solution, the clamping mechanism includes a clamping seat, a lifting cylinder arranged on the clamping seat, a clamping plate connected to the lifting cylinder, a plurality of clamps arranged in an array on the clamping plate, and at least one blowing nozzle arranged on the periphery of each clamp.

[0010] In the above technical solution, a plurality of rows of the clamping heads arranged along the third direction are provided on the clamping plate along the second direction.

[0011] In the above technical solution, multiple detection lenses are arranged along the third direction on the detection table, multiple pulling mechanisms are arranged along the third direction on the pulling table, and the spacing between adjacent detection lenses is the same as the spacing between adjacent chucks arranged along the third direction.

[0012] In the above technical solution, the distance between the detection lens and the pulling claw of the material pulling mechanism is twice the distance between adjacent chucks along the second direction.

[0013] In the above technical solution, the material pulling mechanism includes a pulling claw cylinder arranged on the material pulling platform, and a group of pulling claws connected to the pulling claw cylinder.

[0014] In the above technical solution, the number of the detection lenses includes four.

[0015] The above technical solution also includes a control device, which is connected to the detection camera, the material pulling mechanism, the lifting mechanism and the material clamping mechanism.

[0016] The present invention has at least the following beneficial effects:

[0017] 1. In the present invention, a clamping mechanism is used to move the scissor feet between the inspection table and the material pulling table, and at least one blowing nozzle is provided on the peripheral side of each clamp, so that when the scissor feet are opposite to the inspection camera, the outer scissor frame of the correctly assembled scissor feet can rotate relative to the inner scissor frame under the action of the blowing nozzle, the inspection result is obtained by the inspection camera, and then the unqualified scissor feet are separated by the cooperation of the material pulling mechanism, so as to realize automatic inspection and improve the qualified rate of products.

[0018] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a schematic diagram of the structure of an assembly device in an embodiment of the present invention;

[0021] Figure 2 2 is a schematic diagram of the structure of the fixture plate in an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of the structure of a fixture block in an embodiment of the present invention;

[0023] Figure 4 Schematic diagram of a clamping mechanism in an embodiment of the present invention;

[0024] Figure 5 yes Figure 4 A partial enlarged view of the middle part;

[0025] Figure 6 Schematic diagram of the coordination between the fixture plate and the clamping mechanism in an embodiment of the present invention;

[0026] Figure 7 It is a schematic diagram of the cooperation between the testing platform and the material pulling platform in the embodiment of the present invention;

[0027] Figure 8 Schematic diagram of the scissor legs in an embodiment of the present invention.

[0028] The reference numerals of the above drawings are: 1, inner scissor frame; 11, round hole; 12, rotating shaft; 2, outer scissor frame; 21, shaft hole; 3, workbench; 4, slide rail; 5, pressing mechanism; 6, fixture plate; 61, fixture block; 611, first step portion; 612, guide column; 613, guide arc surface; 614, first outer frame; 615, first notch; 616, first limit portion; 617, first groove; 621, second step portion; 622, second outer frame; 6 23. Second notch; 624. Second limiting portion; 625. Second groove; 631. First positioning surface; 62. Mounting groove; 7. Clamping mechanism; 71. Clamping seat; 72. Lifting cylinder; 73. Clamping plate; 74. Chuck; 75. Blowing nozzle; 8. Detection mechanism; 81. Detection table; 811. Detection lens; 812. Detection camera; 82. Pulling table; 821. Pulling mechanism; 8211. Pulling claw cylinder; 8212. Pulling claw; 9. Control device. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1: See Figures 1 to 8 As shown, an assembly device for scissor legs includes a workbench 3, a slide rail 4 arranged on the workbench 3, a material pressing mechanism 5 arranged above the slide rail 4 and located at one end of the extension direction of the slide rail 4, a detection mechanism 8 arranged at the other end of the extension direction of the slide rail 4, a fixture plate 6 slidably connected to the slide rail 4, and a clamping mechanism 7 for moving materials arranged above the fixture plate 6 and the detection mechanism 8.

[0031] Before assembly and cutting are performed, the outer scissors frame 2 and the inner scissors frame 1 are connected sheet materials. The whole piece of material can be placed on the jig tray 6, and the outer scissors frame 2 and the inner scissors frame 1 on the material are respectively opposite to the first step 611 and the second step 621 on the jig tray 6. The jig tray 6 can slide along the slide rail 4 to the bottom of the pressing mechanism 5, and the pressing plate of the pressing mechanism 5 is pressed toward the jig tray 6, so that the first pressing block and the second pressing block on the pressing plate are respectively opposite to the inner scissors frame 1 and the outer scissors frame 2, and the outer scissors frame 2 is pressed on the first step 611, and the inner scissors frame 1 is pressed on the second step 621. Thereby, the outer scissors frame 2 and the inner scissors frame 1 are broken and separated from the waste materials around them.

[0032] See also Figure 6 As shown, the assembly mechanism for the scissor legs includes a fixture plate 6 slidably connected to the slide rail 4 and a clamping mechanism 7 arranged above the fixture plate 6 .

[0033] join Figure 2As shown, the fixture plate 6 is provided with mounting areas arranged in an array, and each of the mounting areas includes a first step portion 611 for placing the outer scissors frame 2. The first step portion 611 is arranged obliquely along a first direction, and the first direction is the extension direction of the shaft hole 21 of the outer scissors frame 2 placed on the first step portion 611 in a preset placement manner. A guide column 612 is provided on the inner side of the first step portion 611 toward the bottom end of the first step portion 611. The guide arc surface 613 of the guide column 612 abuts against the outer scissors frame 2 placed on the first step portion 611. A first groove 617 is provided in the middle of the first step portion 611 opposite to the outer scissors frame 2. For example, the first step portion 611 can be set as a U-shaped step portion. Among them, the connecting section in the middle of the U-shaped step portion is the bottom end of the first step portion 611, and the opening side of the U-shaped step portion is the top end of the first step portion 611. The installation areas are distributed in an array on the fixture plate 6, so that the clamping structure can clamp a plurality of inner scissor frames 1 and outer scissor frames 2 at one time for assembly, thereby improving assembly efficiency.

[0034] In a preferred embodiment, the guide arc surface 613 is opposite to the middle of the bottom end of the first step portion 611. The force of the guide arc surface 613 on the outer scissor frame 2 and the plugging force of the rotating shaft 12 and the shaft hole 21 are located on the same straight line to ensure effective plugging between the two.

[0035] See also Figure 3 As shown, the outer side wall of the first step portion 611 extends upward to form a first outer frame 614 that matches the outer frame of the outer scissors frame 2. In a preferred embodiment, at least one first notch 615 is provided on the first outer frame 614. The provision of the notch allows the first outer frame 614 to have a certain elasticity, thereby facilitating the outer scissors frame 2 to be pressed into the first outer frame 614 and disposed on the first step portion 611, and also facilitating the position of the outer scissors frame 2 on the first step portion 611, so as to facilitate assembly with the inner scissors frame 1.

[0036] In order to further limit the position of the outer scissors frame 2 relative to the first step portion 611, a first limiting portion 616 opposite to the first step portion 611 is provided on at least one side of the first outer frame 614, and a sliding groove is formed between the first limiting portion 616 and the first step portion 611. Figure 3 As shown, the first limiting portion 616 can be formed by extending one side of the first outer frame 614 toward the center of the U-shaped step portion.

[0037] For the outer scissors frame 2 and the inner scissors frame 1 that have been cut, the clamping mechanism 7 can be used to sleeve the inner scissors frame 1 and then assemble it with the outer scissors frame 2 placed on the first step portion 611 in the installation area.

[0038] In a preferred embodiment, the installation area also includes a second step portion 621 for placing the inner scissors frame 1. A second groove 625 corresponding to the circular hole 11 of the inner scissors frame 1 is provided in the middle of the second step portion 621. For example, the second step portion 621 can be set as a rectangular groove. The outer side of the second step portion 621 extends upward to form a second outer frame 622 adapted to the outer frame of the inner scissors frame 1. At least one second notch 623 is provided on the second outer frame 622. Similar to the setting of the first notch 615, the setting of the second notch 623 can make the second outer frame 622 have a certain elasticity, so that the inner scissors frame 1 is pressed into the second outer frame 622 and set on the second step portion 621. Preferably, a second limit portion 624 opposite to the second step portion 621 is provided on the second outer frame 622. The second limit portion 624 is formed by extending from the center of the second outer frame 622 to the second step portion 621.

[0039] See also Figure 3 As shown, the installation area is a jig block 61 embedded in the jig tray 6. The jig block 61 is provided with a first positioning surface 631, and the installation slot 62 of the jig tray 6 is provided with a second positioning surface that matches the first positioning surface 631. The jig block 61 is set as a detachable structure from the jig tray 6, which is convenient for replacing the jig block 61 according to different types of scissor legs. The matching first positioning surface 631 and the second positioning surface are set to ensure that each jig block 61 on the jig tray 6 is installed in a preset form, which is convenient for subsequent batch operations.

[0040] The clamping mechanism 7 includes a clamping seat 71, a lifting cylinder 72 arranged on the clamping seat 71, a clamping plate 73 connected to the lifting cylinder 72, a plurality of clamps 74 arranged in an array on the clamping plate 73, and at least one blowing nozzle 75 arranged on the side of each clamp 74.

[0041] The clamp 74 can be sleeved in the circular hole 11 of the inner scissor frame 1, thereby driving the inner scissor frame 1 to move. Each of the clamps 74 corresponds to one of the installation areas on the jig plate 6. When the clamping mechanism 7 installs the scissor legs on the jig plate 6, each of the clamps 74 performs installation operations on the inner scissor frame 1 and the outer scissor frame 2 in the installation area corresponding thereto, forming a batch assembly and improving assembly efficiency.

[0042] The clamping mechanism 7 is connected to a driving mechanism (not shown), and the driving mechanism can drive the clamping mechanism 7 to move above the fixture plate 6 and the detection mechanism 8. Specifically, when an inner scissor frame 1 is sleeved on each of the clamping heads 74, the driving mechanism can drive the clamping mechanism 7 to set the clamped inner scissor frame 1 in the outer scissor frame 2 placed on the first step portion 611, and insert one of the rotating shafts 12 of the inner scissor frame 1 into the shaft hole 21 of the outer scissor frame 2 away from the guide column 612. Then drag the inner scissor frame 1 to move to the side away from the guide column 612. Since one of the rotating shafts 12 of the inner scissor frame 1 has been inserted into the shaft hole 21 of the outer scissor frame 2 away from the guide column 612, when the inner scissor frame 1 is dragged by the clamp 74 to move away from the guide column 612, a drag force away from the guide column 612 is applied to the outer scissor frame 2, so that the guide column 612 moves obliquely upward on the first step portion 611 along the guide arc surface 613. As a result, one of the rotating shafts 12 of the inner scissor frame 1 facing the guide column 612 is slowly squeezed into the shaft hole 21, realizing the automated assembly of the inner scissor frame 1 and the outer scissor frame 2.

[0043] See also Figure 1 As shown, a detection mechanism 8 is provided at one end of the slide rail 4 away from the material pressing mechanism 5. The detection mechanism 8 includes the detection table 81, the material pulling table 82 and the clamping mechanism 7 for moving materials between the detection table 81 and the material pulling table 82 arranged on the workbench 3.

[0044] See also Figure 7 As shown, a plurality of detection holes are arranged on the detection platform 81 , each of the detection holes is covered with a detection lens 811 , and a detection camera 812 is arranged below the detection platform 81 and opposite to each of the detection lenses 811 .

[0045] The material pulling platform 82 is disposed at one side of the detection platform 81, and a material pulling mechanism 821 corresponding to the detection lens 811 is disposed on the material pulling platform 82. Each detection lens 811 and the corresponding material pulling mechanism 821 are disposed relatively to each other along the second direction. A lifting mechanism (not shown) is connected below the material pulling platform 82 to drive the material pulling platform 82 to move in a vertical direction.

[0046] The clamping mechanism 7 is driven by the driving mechanism to move along the second direction between the detection platform 81 and the pulling platform 82 .

[0047] At least one blowing nozzle 75 is provided on the peripheral side of each of the clamps 74. The blowing nozzle 75 is opposite to the outer scissor frame 2 of the assembled scissor legs. Since the inner scissor frame 1 and the outer scissor frame 2 are rotatably pivoted, whether the outer scissor frame 2 can rotate relative to the inner scissor frame 1 under the action of the blowing nozzle 75 can be used to determine whether the inner scissor frame 1 and the outer scissor frame 2 are effectively assembled.

[0048] See also Figure 1 As shown, the detection mechanism 8 also includes a control device 9, and the control device 9 is connected to the detection camera 812, the material pulling mechanism 821, the lifting mechanism and the clamping mechanism 7. When the clamping mechanism 7 moves the chuck 74 to the top of the detection lens 811 and opposite to the detection camera 812, the control mechanism controls the blowing nozzle 75 on the clamping mechanism 7 to blow air to the outer scissors frame 2 to rotate the outer scissors frame 2 relative to the inner scissors frame 1. The detection result is obtained by the detection camera 812 and transmitted to the control device 9. The control device 9 controls the material pulling mechanism 821 according to the received detection result to pull the unqualified scissor legs from the chuck 74 and put them into the unqualified product collection box.

[0049] In a preferred embodiment, two blowing nozzles 75 are provided on the circumference of each of the clamps 74, and the angle between the two blowing nozzles 75 and the center of the clamp 74 is less than 180°. The two blowing nozzles 75 are provided, and the two blowing nozzles 75 are opposite to one side of the outer scissor frame 2, so as to increase the force acting on the outer scissor frame 2, so that the outer scissor frame 2 can rotate relative to the inner scissor frame 1 when effectively assembled with the inner scissor frame 1.

[0050] See also Figure 4 As shown, the clamps 74 are arranged in an array on the clamping plate 73. Specifically, a plurality of rows of the clamps 74 arranged along a third direction are provided on the clamping plate 73 along the second direction. Preferably, the third direction is perpendicular to the second direction.

[0051] A plurality of the detection lenses 811 are arranged along the third direction on the detection platform 81, and a plurality of the material pulling mechanisms 821 are arranged along the third direction on the material pulling platform 82. The spacing between adjacent detection lenses 811 is the same as the spacing between adjacent chucks 74 arranged along the third direction.

[0052] In a preferred embodiment, the distance between the detection lens 811 and the claw 8212 of the material pulling mechanism 821 is twice the distance between the adjacent clamps 74 along the third direction. When the clamps 74 in the Nth row arranged along the third direction on the clamping plate 73 are sleeved with the scissor feet and face the detection lens 811, the clamps 74 in the N+2nd row on the clamping plate 73 are sleeved with the scissor feet and face the claw 8212, so that detection and material pulling can be performed simultaneously, thereby improving detection efficiency.

[0053] See also Figure 7 As shown, the material pulling mechanism 821 includes a claw cylinder 8211 disposed on the material pulling platform 82, and a group of claws 8212 connected to the claw cylinder 8211. A group of claws 8212 are arranged relatively along the third direction, and under the action of the claw cylinder 8211, a group of claws 8212 can be relatively closed or opened in opposite directions. When the scissor legs located above them are defective products, a group of claws 8212 closes and clamps the unqualified scissor legs under the action of the claw cylinder 8211, and drives the material pulling platform 82 to move downward as a whole under the action of the lifting mechanism connected to the material pulling platform 82, so that the claws 8212 clamp the scissor legs and move downward, and pull the scissor legs off the chuck 74. A defective product collection box is arranged below the claws 8212, and when the claws 8212 are opened, the scissor legs fall into the defective product collection box.

[0054] In a preferred embodiment, the number of the detection lenses 811 includes four. The four detection lenses 811 are arranged at equal intervals along the third direction on the detection platform 81. The material pulling platform 82 is provided with four material pulling mechanisms 821 arranged at equal intervals along the third direction corresponding to the detection lenses 811 one by one.

[0055] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A detection mechanism for a scissor leg, the scissor leg comprising an inner scissor frame and an outer scissor frame pivotally connected, It is characterized in that include: An inspection platform, wherein a plurality of inspection holes are arranged on the inspection platform, each of the inspection holes is covered with an inspection lens, and an inspection camera is arranged below the inspection platform and opposite to each of the inspection lenses; A material pulling platform, the material pulling platform is arranged on one side of the detection platform, a material pulling mechanism corresponding to the detection lens is arranged on the material pulling platform, and each detection lens and the corresponding material pulling mechanism are arranged relatively to each other along the second direction; a lifting mechanism for driving the material pulling platform to move in a vertical direction is connected below the material pulling platform; A material clamping mechanism, the material clamping mechanism comprises a clamping head sleeved in a circular hole of the inner scissor frame, each of the clamping heads is provided with at least one blowing nozzle opposite to the outer scissor frame pivotally connected to the inner scissor frame, the material clamping mechanism is arranged above the detection platform and the material pulling platform, and the material clamping mechanism moves between the detection platform and the material pulling platform along the second direction; The material clamping mechanism includes a material clamping seat, a lifting cylinder arranged on the material clamping seat, a material clamping plate connected to the lifting cylinder, a plurality of the chucks arranged in an array on the material clamping plate, and at least one blowing nozzle arranged on the periphery of each of the chucks; the material pulling mechanism includes a claw cylinder arranged on the material pulling platform, and a group of claws connected to the claw cylinder.

2. The detection mechanism for scissor legs according to claim 1, Features: Two blowing nozzles are arranged on the peripheral side of each chuck, and the angle between the two blowing nozzles and the center of the chuck is less than 180°.

3. The detection mechanism for scissor legs according to claim 1, Features: A plurality of the clamping heads arranged along the third direction are arranged in a plurality of rows on the clamping plate along the second direction.

4. The detection mechanism for scissor legs according to claim 3, Features: A plurality of the detection lenses are arranged on the detection table along the third direction, a plurality of the material pulling mechanisms are arranged on the material pulling table along the third direction, and the spacing between adjacent detection lenses is the same as the spacing between adjacent chucks arranged along the third direction.

5. The detection mechanism for scissor legs according to claim 3, Features: The distance between the detection lens and the pulling claw of the material pulling mechanism is twice the distance between the adjacent chucks along the second direction.

6. The detection mechanism for scissor legs according to claim 1, Features: The number of the detection lenses includes four.

7. The detection mechanism for scissor legs according to claim 1, Features: It also includes a control device, which is connected to the detection camera, the material pulling mechanism, the lifting mechanism and the material clamping mechanism.

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