Positioning fixture for workpiece visual inspection

Abstract

The utility model relates to the technical field of workpiece detection, in particular to a positioning fixture for workpiece visual inspection, which comprises a supporting plate, a rectangular frame is fixedly connected to the upper end of the supporting plate, and extension plates are fixedly connected to the upper portion, the lower portion, the upper portion and the lower portion of the left end of the rectangular frame. A round rod is jointly and fixedly connected between the two extension plates at the right end, a first motor is fixedly connected to the upper end of the extension plate at the upper portion of the left end, a screw is fixedly connected to the output end of the first motor, a connecting plate is clamped to the screw in a penetrating and threaded mode, and a connecting plate is movably connected to the round rod in a penetrating and threaded mode. A lifting plate is jointly and fixedly connected between the two connecting plates, and rectangular grooves are formed in the middle of the left end and the middle of the right end of the rectangular frame correspondingly. The positioning clamp for workpiece visual inspection can be suitable for workpieces of different sizes, practicability is improved, rotation is convenient, and the workpieces can be comprehensively inspected.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece detection, in particular to a positioning fixture for visual inspection of workpieces. Background Technique

[0002] Some precision workpieces need to be visually inspected after processing to prevent scratches on the surface and skewness during the assembly of some parts. Special fixtures can be used to hold the workpieces during visual inspection, eliminating the need for workers to hold them by hand. However, the existing workpiece positioning fixtures have at least the following drawbacks: 1. The existing workpiece fixtures cannot be flexibly applied to workpieces of different sizes during use, resulting in limited application range of the fixtures and inconvenience in use; 2. When the existing workpiece clamping tools are used for visual inspection after clamping, it is inconvenient to check the situation at the back, and a rotating function needs to be added to facilitate workers to comprehensively inspect them. Therefore, we introduce a new positioning fixture for visual inspection of workpieces. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a positioning fixture for visual inspection of workpieces, which can effectively solve the problems in the background technique.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A positioning fixture for visual inspection of workpieces includes a support plate. A rectangular frame is fixedly connected to the upper end of the support plate. Extension plates are fixedly connected to the upper left, lower left, upper right, and lower right ends of the rectangular frame. A round rod is fixedly connected between the two extension plates at the right end. A first motor is fixedly connected to the upper end of the extension plate at the upper left end. A screw rod is fixedly connected to the output end of the first motor. A connecting plate is threadedly engaged with the screw rod. The connecting plate is movably connected to the round rod in an inserted manner. A lifting plate is fixedly connected between the two connecting plates. Rectangular grooves are formed in the middle of the left end and the middle of the right end of the rectangular frame. An operation panel is fixedly connected to the left part of the front end of the support plate. Support pads are fixedly connected to the left and right parts of the lower end of the support plate. Illumination lamps are fixedly connected to the four corners of the upper end of the support plate.

[0006] Preferably, a connecting rod is movably and threadedly engaged in the middle of the support plate. A load-bearing plate is fixedly connected to the upper end of the connecting rod. A rubber pad is fixedly connected to the upper end of the load-bearing plate. A positioning point is fixedly connected to the middle of the upper end of the rubber pad. A number of groups of looped rods are fixedly connected to the outer surface of the lower end of the connecting rod at equal intervals. Rollers are movably connected to each group of looped rods in an inserted manner. A cylindrical frame is fixedly connected to the middle of the lower end of the support plate.

[0007] Preferably, the screw rod is movably connected to the extension plate at the lower part of the left end through a bearing, and the connecting plate is movably clamped with the adjacent rectangular groove.

[0008] Preferably, between the support plate, the load-bearing plate and several groups of return-shaped rods, all the roller shafts are in contact with the cylindrical frame but not fixed.

[0009] Preferably, a second motor is fixedly connected to the middle of the upper end of the lifting plate. The output end of the second motor is fixedly connected to a turntable. The lower end of the turntable is fixedly connected with irradiation lamps at equal distances. The lower end of the turntable is fixedly connected with several groups of hollow rods at equal distances. The inner walls of several groups of the hollow rods are all fixedly connected with movable springs. The lower ends of several groups of the movable springs are all fixedly connected with telescopic rods. The lower ends of several groups of the telescopic rods are jointly fixedly connected with a pressing plate. The lower end of the pressing plate is fixedly connected with a rubber pad.

[0010] Preferably, several groups of the hollow rods are all located inside several groups of the irradiation lamps, and several groups of the telescopic rods are all movably clamped with the adjacent hollow rods.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. By arranging the first motor and the screw rod, the rotation of the screw rod driven by the first motor can make the connecting plate move up and down. The lifting plate on the connecting plate moves up and down along with the connecting plate. The pressing plate at the lower end of the lifting plate and the load-bearing plate on the support plate clamp the workpiece with each other. Driven by the first motor and the screw rod, reasonable adjustment can be made according to the sizes of different workpieces, increasing the practicability.

[0013] 2. By arranging the lifting plate, the second motor on the lifting plate drives the lower turntable and the pressing plate. The lower load-bearing plate can rotate along with the workpiece driven by the workpiece. The return-shaped rods and the roller shafts under the load-bearing plate can facilitate the rotation of the upper load-bearing plate, enabling the worker to conduct a comprehensive inspection of the workpiece. Description of the Drawings

[0014] Figure 1 It is a partial structural schematic diagram of a positioning fixture for workpiece vision inspection of the utility model;

[0015] Figure 2 It is a partial structural schematic diagram of a positioning fixture for workpiece vision inspection of the utility model;

[0016] Figure 3 It is a partial structural schematic diagram of a positioning fixture for workpiece vision inspection of the utility model;

[0017] Figure 4 It is a partial structural schematic diagram of a positioning fixture for workpiece vision inspection of the utility model.

[0018] In the figure: 1, support plate; 2, rectangular frame; 3, extension plate; 4, round rod; 5, first motor; 6, screw rod; 7, connecting plate; 8, rectangular groove; 9, lifting plate; 10, operation panel; 11, support pad; 12, irradiation lamp; 13, connecting rod; 14, load-bearing plate; 15, rubber pad; 16, positioning point; 17, return-shaped rod; 18, roller; 19, cylindrical frame; 20, pressing plate; 21, second motor; 22, turntable; 23, hollow rod; 24, telescopic rod; 25, movable spring. Detailed implementation manner

[0019] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0023] A positioning fixture for visual inspection of workpieces, comprising a support plate 1. A rectangular frame 2 is fixedly connected to the upper end of the support plate 1. Extension plates 3 are fixedly connected to the upper left, lower left, upper right, and lower right of the rectangular frame 2. A round rod 4 is fixedly connected between the two extension plates 3 on the right end. A first motor 5 is fixedly connected to the upper end of the extension plate 3 in the upper left. The output end of the first motor 5 is fixedly connected to a screw rod 6. A connecting plate 7 is inserted and threadedly engaged with the screw rod 6. The connecting plate 7 is inserted and movably connected to the round rod 4. A lifting plate 9 is fixedly connected between the two connecting plates 7. Rectangular grooves 8 are opened in the middle of the left end and the middle of the right end of the rectangular frame 2. An operation panel 10 is fixedly connected to the left part of the front end of the support plate 1. Support pads 11 are fixedly connected to the left part of the lower end and the right part of the lower end of the support plate 1. Illumination lamps 12 are fixedly connected to the four corners of the upper end of the support plate 1.

[0024] In this embodiment, a connecting rod 13 is inserted and movably clamped in the middle of the support plate 1. A load-bearing plate 14 is fixedly connected to the upper end of the connecting rod 13. A rubber pad 15 is fixedly connected to the upper end of the load-bearing plate 14. A positioning point 16 is fixedly connected to the middle of the upper end of the rubber pad 15. A number of groups of loop-shaped rods 17 are fixedly connected to the outer surface of the lower end of the connecting rod 13 at equal distances. Rollers 18 are inserted and movably connected to the number of groups of loop-shaped rods 17. A cylindrical frame 19 is fixedly connected to the middle of the lower end of the support plate 1. The screw rod 6 is movably connected to the lower left extension plate 3 through a bearing. The connecting plate 7 is movably clamped with the adjacent rectangular groove 8. Between the support plate 1 and the load-bearing plate 14 and the number of groups of loop-shaped rods 17, the number of groups of rollers 18 are all in contact with the cylindrical frame 19 but not fixed. By clamping the connecting plate 7 with the rectangular groove 8, the connecting plate 7 can be connected to the external screw rod 6 and the round rod 4. The positioning point 16 can facilitate placing the workpiece in the middle of the load-bearing plate 14. The illumination lamps 12 can provide light, facilitating careful visual inspection of the workpiece.

[0025] In this embodiment, a second motor 21 is fixedly connected to the middle of the upper end of the lifting plate 9. The output end of the second motor 21 is fixedly connected to a turntable 22. Illumination lamps 12 are fixedly connected to the lower end of the turntable 22 at equal distances. A number of groups of hollow rods 23 are fixedly connected to the lower end of the turntable 22 at equal distances. Moving springs 25 are fixedly connected to the inner walls of the number of groups of hollow rods 23. Telescopic rods 24 are fixedly connected to the lower ends of the number of groups of moving springs 25. A pressing plate 20 is fixedly connected to the lower ends of the number of groups of telescopic rods 24. A rubber pad 15 is fixedly connected to the lower end of the pressing plate 20. The number of groups of hollow rods 23 are all located inside the number of groups of illumination lamps 12. The number of groups of telescopic rods 24 are all movably clamped with the adjacent hollow rods 23. By fixedly connecting the moving springs 25 and the telescopic rods 24 to the upper end of the pressing plate 20, it is convenient to press and fix the lower workpiece while preventing excessive pressing pressure. The rollers 18 can facilitate the rotation of the connecting rod 13 and the upper load-bearing plate 14.

[0026] It should be noted that the present utility model is a positioning fixture for workpiece vision inspection. During use, first, the workpiece to be inspected is placed on the upper end of the load-bearing plate 14 according to the position of the positioning point 16. After determining the size of the workpiece, the first motor 5 at the upper end of the extension plate 3 is driven. The screw rod 6 at the output end of the first motor 5 rotates, and the connecting plate 7 that is threadedly engaged and inserted on the screw rod 6 drives the lifting plate 9 to move up and down. The lower end of the turntable 22 at the lower end of the lifting plate 9 is connected to a pressing plate 20 through a hollow rod 23, a telescopic rod 24, and a movable spring 25. After the lower end of the pressing plate 20 contacts the workpiece, under the action of the movable spring 25, the telescopic rod 24 is movably engaged with the upper hollow rod 23, and the workpiece can be clamped and fixed without applying excessive pressing pressure. Then, driven by the second motor 21, the turntable 22 at the output end can drive the lower pressing plate 20 to rotate. The outer surface of the connecting rod 13 at the lower end of the lower load-bearing plate 14 contacts but is not fixed to the outer cylindrical frame 19 through a roller 18 that is movably connected by a return-shaped rod 17, which facilitates the rotation of the upper connecting rod 13 and the load-bearing plate 14, and is convenient for workers to perform a comprehensive vision inspection.

[0027] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for visual inspection of a workpiece, comprising a support plate (1), characterized in that: The upper end of the support plate (1) is fixedly connected to a rectangular frame (2); the upper left end, the lower left end, the upper right end and the lower right end of the rectangular frame (2) are all fixedly connected to extension plates (3); a round rod (4) is fixedly connected between the two extension plates (3) at the right end; the upper end of the extension plate (3) at the upper left end is fixedly connected to a No. 1 motor (5); the output end of the No. 1 motor (5) is fixedly connected to a screw rod (6); a connecting plate (4) is inserted into the screw rod (6) and is threadedly clamped. 7), a connecting plate (7) is inserted and movably connected on the round rod (4), a lifting plate (9) is fixedly connected between the two connecting plates (7), a rectangular groove (8) is opened in the middle of the left end and the middle of the right end of the rectangular frame (2), an operating panel (10) is fixedly connected to the left front end of the support plate (1), a support pad (11) is fixedly connected to the left and right lower ends of the support plate (1), and an irradiation lamp (12) is fixedly connected to the four corners of the upper end of the support plate (1); A connecting rod (13) is inserted and movably connected in the middle of the support plate (1), a load-bearing plate (14) is fixedly connected to the upper end of the connecting rod (13), a rubber pad (15) is fixedly connected to the upper end of the load-bearing plate (14), a positioning point (16) is fixedly connected to the middle of the upper end of the rubber pad (15), a plurality of groups of return rods (17) are fixedly connected at equal distances to the outer surface of the lower end of the connecting rod (13), rollers (18) are inserted and movably connected to the plurality of groups of return rods (17), and a cylindrical frame (19) is fixedly connected to the middle of the lower end of the support plate (1); A No. 2 motor (21) is fixedly connected to the middle of the upper end of the lifting plate (9); a turntable (22) is fixedly connected to the output end of the No. 2 motor (21); an irradiation lamp (12) is fixedly connected to the lower end of the turntable (22) at an equal distance; a plurality of groups of hollow rods (23) are fixedly connected to the lower end of the turntable (22) at an equal distance; movable springs (25) are fixedly connected to the inner walls of the upper ends of the plurality of groups of hollow rods (23); the lower ends of the plurality of groups of movable springs (25) are fixedly connected to telescopic rods (24); the lower ends of the plurality of groups of telescopic rods (24) are fixedly connected to a pressing plate (20); and the lower ends of the pressing plate (20) are fixedly connected to a rubber pad (15).

2. A positioning fixture for workpiece visual inspection according to claim 1, characterized in that: The screw rod (6) is movably connected to the extension plate (3) at the lower left end via a bearing, and the connecting plate (7) is movably engaged with the adjacent rectangular groove (8).

3. A positioning fixture for workpiece visual inspection according to claim 1, characterized in that: Between the support plate (1), the load-bearing plate (14) and the plurality of groups of reciprocating rods (17), the plurality of groups of rollers (18) are in contact with the cylindrical frame (19) but are not fixed.

4. A positioning fixture for workpiece visual inspection according to claim 1, characterized in that: The plurality of groups of hollow rods (23) are all located inside the plurality of groups of irradiation lamps (12), and the plurality of groups of telescopic rods (24) are all movably engaged with the adjacent hollow rods (23).

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