Nut grabbing mechanism and base nut installing device

Abstract

The nut grabbing mechanism comprises a movable seat, an installation block, an air cylinder, a sleeve and an insertion shaft, the movable seat is driven by a driving mechanism to move, and the upper end of the insertion shaft is fixedly connected with a connecting block; an elastic pipe section is integrally arranged at the lower end of the sleeve, a reducing pipe portion is arranged at the lower end of the elastic pipe section, the elastic pipe section is composed of a plurality of elastic arms distributed in the circumferential direction, the elastic arms are arranged in the axial direction of the sleeve, the periphery of the elastic pipe section is sleeved with an elastic ring, and guide slopes are formed in the positions, close to the reducing pipe portion, of the inner walls of the elastic arms. A conical driving part corresponding to the guide inclined surface is arranged at the lower end of the inserting shaft; when the air cylinder drives the connecting block to move downwards, the inserting shaft is driven to move downwards, and outward acting force is generated on the guide inclined face through the conical driving part so that the reducing pipe part can expand. The structure is optimized, the nut can be reliably taken and placed so as to meet the requirement for automatic installation of the nut, and good practicability is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of fire alarm product assembly equipment, specifically relating to a nut gripping mechanism and a base nut mounting device. Background Technology

[0002] In the manufacturing process of fire alarm products, terminal blocks are a key component, and their reliability and stability directly affect product performance. Terminal blocks are typically secured to the base using nuts to ensure the stability and reliability of the electrical connection. However, multiple nuts are usually required on the base of a fire alarm device, and traditional manual installation methods are inefficient and cannot meet the demands of mass production. With the continuous development of industrial automation technology, automated nut gripping mechanisms have gradually become a research hotspot. Existing technologies commonly use mechanical grippers or vacuum suction cups to grip nuts; however, these methods have certain limitations: mechanical grippers have complex structures and are difficult to grip multiple nuts simultaneously; vacuum suction cups are ineffective when gripping metal nuts and are easily affected by environmental factors. Therefore, it is necessary to optimize the structure of existing nut gripping mechanisms. Utility Model Content

[0003] In response, this utility model provides a nut gripping mechanism for efficient and reliable nut gripping, as well as a nut mounting device using the same.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] In a first aspect, this utility model provides a nut gripping mechanism, including a movable seat, a mounting block fixed to the lower end of the movable seat, a cylinder fixed to the movable seat, multiple sleeves with their upper ends fixedly connected to the mounting block, and a shaft inserted into the sleeves at its lower end. The movable seat is driven to move by a driving mechanism. The upper end of the shaft is fixedly connected to a connecting block. The connecting block is driven to move up and down by the cylinder, which in turn drives the shaft to move up and down within the sleeves. An elastic tube section is integrally provided at the lower end of the sleeve. The lower end of the elastic tube section has a reduced-diameter tube portion suitable for inserting a nut. The elastic tube section is composed of multiple circumferentially distributed elastic arms, and each elastic arm is arranged along the axial direction of the sleeve. An elastic ring is fitted around the outer periphery of the elastic tube section. A guide slope is formed on the inner wall of each elastic arm near the reduced-diameter tube portion. A conical driving portion corresponding to the guide slope is provided at the lower end of the shaft. When the cylinder drives the connecting block to move downward, it drives the shaft to move downward and generates an outward force on the guide slope through the conical driving portion, causing the reduced-diameter tube portion to expand.

[0006] Preferably, the elastic tube section is provided with a limiting annular groove on its outer periphery, and the elastic ring is fitted into the limiting annular groove.

[0007] Preferably, a magnet is fixed to the lower end of the insertion shaft.

[0008] Preferably, the cylinder rod of the cylinder points downwards, and the connecting block is fixed to the lower end of the cylinder rod.

[0009] Preferably, the elastic ring is a rubber ring.

[0010] Preferably, all sleeves are arranged in a straight line.

[0011] Secondly, this utility model provides a base-mounted nut device, including a nut conveying mechanism, a base positioning area, and a nut gripping mechanism; the nut conveying mechanism is used to convey nuts, and a nut-waiting area is provided at the end of the nut conveying mechanism; the positioning area is used to position the base; the nut gripping mechanism is used to grip the nut from the nut-waiting area and transfer it to the base positioning area; the nut gripping mechanism adopts the nut gripping mechanism described above.

[0012] The advantages of this invention are as follows: The structure of the nut gripping mechanism is optimized, resulting in reliable and efficient nut gripping. The simple structure allows for the simultaneous gripping of multiple nuts. Specifically, in practical use, when retrieving a nut, the movable seat moves downwards, causing the reduced-diameter section of the sleeve to insert into the nut below. Then, the cylinder drives the connecting block downwards, causing the insertion shaft to move downwards synchronously. The tapered drive section at the lower end of the insertion shaft contacts the guide slope at the lower end of the sleeve, generating an outward force that expands the reduced-diameter section, thus tightly gripping the nut. When releasing the nut, the cylinder drives the connecting block and the insertion shaft upwards, gradually removing the force from the tapered drive section on the guide slope 45. The reduced-diameter section retracts under the contraction force of the elastic ring, releasing the nut. The entire process achieves nut gripping and release through the reciprocating motion of the cylinder. The reasonable structural design ensures precise and stable gripping action. The elastic tube section and elastic ring provide good adaptability, improving operational efficiency and reliability. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art are briefly introduced below. Similar elements or parts in the drawings are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale.

[0014] Figure 1 This is a perspective view of the nut gripping mechanism in this utility model;

[0015] Figure 2 for Figure 1 The front view of the sleeve and the insert shaft in the mating state in the nut gripping mechanism shown;

[0016] Figure 3 For along Figure 2A sectional view cut along line AA.

[0017] Figure 4 This is a schematic diagram of the base mounting nut device in this utility model.

[0018] The attached figures are labeled as follows: 1. Movable seat; 2. Mounting block; 3. Cylinder; 31. Cylinder rod; 4. Sleeve; 41. Elastic tube section; 42. Reduced diameter tube section; 43. Elastic arm; 44. Elastic ring; 45. Guide slope; 46. Limiting ring groove; 5. Insert shaft; 51. Conical drive section; 52. Magnet; 6. Drive mechanism; 7. Connecting block; 8. Nut conveying mechanism; 81. Nut waiting area; 9. Base positioning area; 10. Base. Detailed Implementation

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0020] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0021] Firstly, the nut gripping mechanism structure in the embodiments of this utility model is as follows: Figures 1 to 3 As shown, it includes a movable seat 1, a mounting block 2 fixed to the lower end of the movable seat 1, a cylinder 3 fixed to the movable seat 1, multiple sleeves 4 whose upper ends are fixedly connected to the mounting block 2, and insertion shafts 5 whose lower ends are inserted into the sleeves 4. The movable seat 1 is driven by a driving mechanism 6 to move to meet the needs of taking and putting away nuts. The upper end of the insertion shaft 5 is fixedly connected to a connecting block 7. The connecting block 7 is driven by the cylinder 3 to move up and down, thereby driving the insertion shaft 5 to move up and down within the sleeves 4. The lower end of the sleeve 4 is integrally provided with an elastic tube section 41, and the lower end of the elastic tube section 41 has a reduced diameter suitable for insertion. The reduced-diameter tube section 42 of the insert nut is composed of multiple circumferentially distributed elastic arms 43, each elastic arm 43 being axially arranged along the sleeve 4. An elastic ring 44 is fitted around the outer periphery of the elastic tube section 41. A guide slope 45 is formed on the inner wall of each elastic arm 43 near the reduced-diameter tube section 42. A tapered driving part 51 corresponding to the guide slope 45 is provided at the lower end of the insertion shaft 5. When the cylinder 3 drives the connecting block 7 downwards, it causes the insertion shaft 5 to move downwards, and the tapered driving part 51 exerts an outward force on the guide slope 45, causing the reduced-diameter tube section 42 to expand. The elastic ring 44 is preferably a rubber ring. In this embodiment, there are four elastic arms 43, formed by cutting the sleeve 4 with a cross groove.

[0022] The working principle of the nut gripping mechanism in this embodiment of the utility model is as follows: When picking up the nut, the movable seat 1 moves downward so that the reduced diameter tube 42 of the sleeve 4 is inserted into the nut below. Then, when the cylinder 3 drives the connecting block 7 to move downward, it drives the insertion shaft 5 to move downward synchronously. The tapered driving part 51 at the lower end of the insertion shaft 5 contacts the guide slope 45 at the lower end of the sleeve 4 and generates an outward force, causing the reduced diameter tube 42 to expand, thereby tightly gripping the nut. When releasing the nut, the cylinder 3 drives the connecting block 7 and the insertion shaft 5 to move upward. The tapered driving part 51 gradually removes the force on the guide slope 45, and the reduced diameter tube 42 retracts under the contraction elastic force of the elastic ring 44, releasing the nut. The entire process realizes the gripping and releasing of the nut through the reciprocating motion of the cylinder 3. The structure is reasonably designed, the gripping action is accurate and stable, and the setting of the elastic tube section 41 and the elastic ring 44 provides good adaptability, improving the work efficiency and reliability.

[0023] See Figure 2 and Figure 3 The elastic tube section 41 is provided with a limiting ring groove 46 on its outer periphery. The elastic ring 44 is sleeved in the limiting ring groove 46. The limiting ring groove 46 limits the elastic ring 44, which can effectively prevent the elastic ring 44 from slipping during use and ensure the positional stability and functional reliability of the elastic ring 44 on the elastic tube section 41.

[0024] like Figure 3 As shown, a magnet 52 is fixed at the lower end of the insertion shaft 5. In practical applications, when the insertion shaft 5 moves downwards and approaches the reduced diameter tube section 42, the magnet 52 can magnetically attract the nut, thereby enhancing the fixing reliability of the nut on the reduced diameter tube section 42 and effectively preventing the nut from loosening during transfer or use. When the insertion shaft 5 is controlled to move upwards away from the reduced diameter tube section 42, the reduced diameter tube section 42 retracts under the elastic force of the elastic ring 44, and at the same time, the magnet 52 gradually loses its magnetic attraction to the nut, thereby loosening the nut and realizing the rapid release of the nut.

[0025] Preferably, the cylinder rod 31 of the cylinder 3 points downward, and the connecting block 7 is fixed to the lower end of the cylinder rod 31. This structure is simple, feasible, and has good practicality.

[0026] In this embodiment, all sleeves 4 are arranged in a straight line. Five sleeves 4 are provided, and five insert shafts 5 are inserted into the sleeves 4 one by one. The upper ends of the five insert shafts 5 are all fixedly connected to the same connecting block 7.

[0027] Secondly, the base mounting nut device structure in the embodiments of this utility model is as follows: Figure 4As shown, it includes a nut conveying mechanism 8, a base positioning area 9, and a nut gripping mechanism; the nut conveying mechanism 8 is used to convey nuts, and a nut waiting area 81 is set at the end of the nut conveying mechanism 8; the custom positioning area 91 is used to position the base 10; the nut gripping mechanism is used to grip the nut from the nut waiting area 81 and transfer it to the base positioning area 9; the nut gripping mechanism adopts the nut gripping mechanism in the above embodiment; the base nut mounting device in this embodiment of the present invention realizes the automated conveying, gripping and assembly of nuts through the coordinated work of the nut conveying mechanism 8, the base positioning area 9 and the nut gripping mechanism, which has high efficiency and automation and is suitable for nut assembly in industrial automated production lines.

[0028] For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, these obvious variations or modifications derived from the essential spirit of this invention still fall within the scope of protection of this invention.

Claims

1. A nut gripping mechanism characterized by, The device includes a movable seat (1), a mounting block (2) fixed to the lower end of the movable seat (1), a cylinder (3) fixed to the movable seat (1), multiple sleeves (4) whose upper ends are fixedly connected to the mounting block (2), and a shaft (5) whose lower end is inserted into the sleeve (4). The movable seat (1) is driven (6) to move by a driving mechanism. The upper end of the shaft (5) is fixedly connected to a connecting block (7). The connecting block (7) is driven up and down by the cylinder (3) and drives the shaft (5) to move up and down within the sleeve (4). The lower end of the sleeve (4) is integrally provided with an elastic tube section (41). The lower end of the elastic tube section (41) has a reduced diameter tube section suitable for inserting a nut. 42), the elastic tube section (41) is composed of multiple elastic arms (43) distributed circumferentially, and each elastic arm (43) is arranged axially along the sleeve (4). An elastic ring (44) is sleeved on the outer periphery of the elastic tube section (41). A guide slope (45) is formed on the inner wall of each elastic arm (43) near the diameter reduction tube section (42). The lower end of the insertion shaft (5) is provided with a conical drive part (51) corresponding to the guide slope (45). When the cylinder (3) drives the connecting block (7) to move downward, it drives the insertion shaft (5) to move downward, and generates an outward force on the guide slope (45) through the conical drive part (51) to expand the diameter reduction tube section (42).

2. The nut gripping mechanism of claim 1, wherein, The elastic tube section (41) is provided with a limiting ring groove (46) on its outer periphery, and the elastic ring (44) is sleeved in the limiting ring groove (46).

3. The nut gripping mechanism of claim 1, wherein, A magnet (52) is fixed at the lower end of the insert shaft (5).

4. The nut gripping mechanism of claim 1, wherein, The cylinder rod (31) of the cylinder (3) is pointing downwards, and the connecting block (7) is fixed to the lower end of the cylinder rod (31).

5. The nut gripping mechanism of claim 1, wherein, The elastic ring (44) is a rubber ring.

6. The nut gripping mechanism of claim 1, wherein, All sleeves (4) are arranged in a straight line.

7. A base nut device, comprising a nut conveying mechanism (8), a base positioning area (9) and a nut grabbing mechanism; the nut conveying mechanism (8) is used for conveying nuts, and a nut waiting area (81) is arranged at the end of the nut conveying mechanism (8); the base positioning area (9) is used for positioning a base (10); the nut grabbing mechanism is used for grabbing nuts from the nut waiting area (81) and transferring them to the base positioning area (9); characterized in that, The nut gripping mechanism is the nut gripping mechanism according to any one of claims 1 to 6.

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