Simple nut detection mechanism

Abstract

The utility model relates to a simple nut detection mechanism which comprises a fixed support, a linear detection module is installed on the fixed support through a fixed connecting plate, and the linear detection module is located right in front of a workpiece to be detected. The linear detection module comprises a linear pushing mechanism, a step cylindrical pin is mounted at the front end of a linear pushing rod, and the step cylindrical pin sequentially comprises a step part, a cylindrical part and a bolt part from back to front; the cylindrical part and the bolt part can sequentially penetrate through the guide hole from back to front, and the step part can be clamped to the rear end of the guide hole. The nut detection device is suitable for detection of nuts in various postures, is simple in structure and simple in action, and can avoid various interferences without complex overturning of a self-return state.

Description

Technical Field

[0001] The utility model relates to the technical field related to mechanical processing, in particular to a simple nut detection mechanism. Background Art

[0002] At present, the automotive industry and general industry are developing rapidly, and the requirements for the beat and cost of production lines are getting higher and higher. Nut detection mechanisms are widely used in various occasions.

[0003] After a massive search, it was found that the Chinese patent announcement number is CN212933009U, which discloses a stamping welded nut detection mechanism, detection tooling and detection device. The detection mechanism includes a detection bracket, a positioning movable pin and a detection switch. The positioning movable pin is slidably arranged in the detection bracket. A spring is provided between the positioning movable pin and the detection bracket. The inner and outer ends of the positioning movable pin extend out of the detection bracket respectively, wherein the inner end is the contact end and the outer end is the detection end, and the detection end is provided with a sensing block. The detection tooling includes a drive cylinder mounting seat and a drive cylinder, and also includes at least one detection mechanism, which is installed on the cylinder moving rod of the drive cylinder. The detection device includes at least one stamping welded nut detection tooling installed on the detection table. The structure is simple and easy to operate. It is not only convenient to detect, but also accurate, while improving the detection efficiency and reducing the detection cost. The detection tooling can be installed on the detection table according to the number and position of the welded nuts on the stamping parts.

[0004] In summary, existing nut detection mechanisms generally use traditional sensors to detect nuts, which have many limitations for nut detection at different angles and states. In order to meet production needs, very complex flipping mechanisms are used to avoid interference.

[0005] In view of the above-mentioned defects, the designer actively carried out research and innovation in order to create a simple nut detection mechanism to make it more valuable for industrial use. Utility Model Content

[0006] In order to solve any of the above technical problems, the purpose of the utility model is to provide a simple nut detection mechanism.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A simple nut detection mechanism comprises a fixed bracket, on which a linear detection module is mounted via a fixed connecting plate, and the linear detection module is located right in front of a workpiece to be detected;

[0009] The linear detection module includes a linear push mechanism, which is installed at the rear of the fixed connection plate through a linear push mechanism installation block, and the linear push rod is driven to move in the front-rear direction at the driving end of the linear push mechanism, and a stepped cylindrical pin is installed at the front end of the linear push rod, and the stepped cylindrical pin includes a stepped portion, a cylindrical portion and a latch portion from the back to the front, and the outer diameters of the stepped portion, the cylindrical portion and the latch portion are successively smaller;

[0010] A guide frame is installed on the workpiece just in front of the step cylindrical pin, and a guide hole is opened in the guide frame. The cylindrical part and the latch part can pass through the guide hole in sequence from back to front, and the step part can be clamped at the rear end of the guide hole.

[0011] As a further improvement of the utility model, a front end sensor, a middle end sensor and a rear end sensor are installed on the linear push mechanism in sequence from front to back, and a sensor sheet compatible with the above-mentioned front end sensor, middle end sensor and rear end sensor is installed at the rear end of the linear push rod.

[0012] As a further improvement of the utility model, a protective cover is installed on the front end of the fixed connecting plate.

[0013] As a further improvement of the utility model, a cushion block is installed on the outer side of the guide hole at the front end of the guide frame.

[0014] As a further improvement of the present invention, the cushion block is a rubber block or a silicone block.

[0015] As a further improvement of the utility model, a coaxial sensor coaxial with the guide hole is installed on the workpiece in front of the guide hole.

[0016] As a further improvement of the utility model, the linear driving mechanism is a cylinder, and the linear driving rod is a piston rod.

[0017] By means of the above scheme, the utility model has at least the following advantages:

[0018] The utility model is suitable for detecting nuts in various postures, has a simple structure and simple action, and can avoid various interferences without complicated self-reversal and self-retraction states;

[0019] The utility model is simple to operate and easy to use, can meet various working environments, and can improve the beat and production capacity.

[0020] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a structural schematic diagram of a simple nut detection mechanism of the utility model;

[0023] Figure 2 yes Figure 1 The structural diagram of the straight line detection module;

[0024] Figure 3 It is a schematic diagram of the structure of the utility model in the first use state;

[0025] Figure 4 It is a schematic diagram of the structure of the utility model in the second use state;

[0026] Figure 5 It is a structural schematic diagram of the utility model in the third use state.

[0027] The meanings of the various reference numerals in the figures are as follows.

[0028] Fixed bracket 1, fixed connecting plate 2, linear detection module 3, protective cover 4, workpiece 5, guide frame 6, cushion block 7, guide hole 8, linear push mechanism 31, linear push mechanism mounting block 32, linear push rod 33, stepped cylindrical pin 34, front end sensor 35, middle end sensor 36, rear end sensor 37, stepped portion 341, cylindrical portion 342, and latch portion 343. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] In order to make the technical personnel in the technical field better understand the scheme of the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but only represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0031] Example

[0032] like Figure 1 to Figure 5 As shown,

[0033] A simple nut detection mechanism includes a fixed bracket 1, on which a linear detection module 3 is installed through a fixed connecting plate 2, the linear detection module 3 is located directly in front of a workpiece 5 to be detected, and a protective cover 4 is installed at the front end of the fixed connecting plate 2.

[0034] The linear detection module 3 includes a linear push mechanism 31, which is installed at the rear of the fixed connecting plate 2 through a linear push mechanism mounting block 32. The driving end of the linear push mechanism 31 drives the linear push rod 33 to move in the front and rear directions. A stepped cylindrical pin 34 is installed at the front end of the linear push rod 33. The stepped cylindrical pin 34 includes a step portion 341, a cylindrical portion 342 and a latch portion 343 from back to front, and the outer diameters of the step portion 341, the cylindrical portion 342 and the latch portion 343 become smaller in sequence.

[0035] The linear driving mechanism 31 is a cylinder, and the linear driving rod 33 is a piston rod.

[0036] A guide frame 6 is installed on the workpiece 5 directly in front of the stepped cylindrical pin 34, and a guide hole 8 is opened in the guide frame 6. The cylindrical part 342 and the latch part 343 can pass through the guide hole 8 in sequence from back to front, and the step part 341 can be clamped at the rear end of the guide hole 8.

[0037] 1. A cushion block 7 is installed on the outside of the guide hole 8 at the front end of the guide frame 6. The cushion block 7 is a rubber block or a silicone block. The cushion block 7 with an elastic structure can provide a certain buffering treatment to the step cylindrical pin 34.

[0038] 2. A coaxial sensor coaxial with the guide hole 8 is installed on the workpiece 5 in front of the guide hole 8. The coaxial sensor can be used to sense the coaxial condition of the stepped cylindrical pin 34 at the rear.

[0039] A front sensor 35, a middle sensor 36 and a rear sensor 37 are sequentially installed on the linear driving mechanism 31 from front to back, and a sensor sheet matching the front sensor 35, the middle sensor 36 and the rear sensor 37 is installed on the rear end of the linear driving rod 33. The three sensors are used to sense the forward and backward positions of the linear driving rod 33, and then determine whether there is a nut.

[0040] The working principle and action sequence of this utility model:

[0041] like Figure 4 As shown, when the cylinder is in the ventilation state and there is a nut on the workpiece, the stepped cylindrical pin 34 extends forward, the pin portion 343 at the head directly passes through the middle hole of the nut, and the stepped portion 341 at the tail is stuck in the nut mouth and then stays, and the middle end sensor 36 sends a signal to detect the presence of the nut. Figure 5 As shown, when there is no nut on the workpiece, the stepped cylindrical pin 34 continues to extend forward, and the cylindrical portion 342 in the middle directly passes through the hole on the workpiece until the cylinder stroke is completed and the stepped portion 341 at the tail is stuck at the rear end of the guide frame 6, and the front sensor 35 sends a signal to detect that the nut does not exist. Figure 3 As shown, when the cylinder is in the air-off state, the stepped cylindrical pin 34 retreats to the original state of the cylinder, until the latch portion 343 of the head completely leaves the workpiece, and the rear end sensor 37 sends a signal, indicating that the detection mechanism has retreated.

[0042] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A simple nut detection mechanism, comprising a fixed bracket (1), on which a linear detection module (3) is mounted via a fixed connecting plate (2), and the linear detection module (3) is located directly in front of a workpiece (5) to be detected; Features: The linear detection module (3) comprises a linear driving mechanism (31), the linear driving mechanism (31) is mounted on the rear of the fixed connection plate (2) through a linear driving mechanism mounting block (32), the driving end of the linear driving mechanism (31) drives a linear driving rod (33) to move in the front-rear direction, a stepped cylindrical pin (34) is mounted on the front end of the linear driving rod (33), the stepped cylindrical pin (34) comprises a stepped portion (341), a cylindrical portion (342) and a latch portion (343) from the back to the front, and the outer diameters of the stepped portion (341), the cylindrical portion (342) and the latch portion (343) are successively smaller; A guide frame (6) is installed on the workpiece (5) directly in front of the stepped cylindrical pin (34), and a guide hole (8) is opened in the guide frame (6). The cylindrical part (342) and the latch part (343) can pass through the guide hole (8) in sequence from back to front, and the stepped part (341) can be snap-connected to the rear end of the guide hole (8).

2. A simple nut detection mechanism as claimed in claim 1, characterized in that: A front end sensor (35), a middle end sensor (36) and a rear end sensor (37) are sequentially installed on the linear driving mechanism (31) from front to back, and a sensor sheet compatible with the front end sensor (35), the middle end sensor (36) and the rear end sensor (37) is installed at the rear end of the linear driving rod (33).

3. A simple nut detection mechanism as claimed in claim 1, characterized in that: A protective cover (4) is installed on the front end of the fixed connection plate (2).

4. A simple nut detection mechanism as claimed in claim 1, characterized in that: A cushion block (7) is installed on the outer side of the guide hole (8) at the front end of the guide frame (6).

5. A simple nut detection mechanism as claimed in claim 4, characterized in that: The cushion block (7) is a rubber block or a silica gel block.

6. A simple nut detection mechanism as claimed in claim 1, characterized in that: A coaxial sensor coaxial with the guide hole (8) is installed on the workpiece (5) in front of the guide hole (8).

7. A simple nut detection mechanism as claimed in claim 1, characterized in that: The linear driving mechanism (31) is a cylinder, and the linear driving rod (33) is a piston rod.

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