Nut floating positioning mechanism

Abstract

The utility model discloses a nut floating positioning mechanism, and belongs to the technical field of mechanical tools. In order to mainly solve the problem that in an existing product, a nut is placed on a positioning pin in an exposed mode, and the falling risk exists, according to the technical scheme, the device comprises a fixing base and a rocker arm assembled on the fixing base, a positioning sleeve is installed at the left end of the top of the rocker arm through a bolt, and a spring and the positioning pin are placed in the positioning sleeve; the positioning pin is located above the spring, the top end of the positioning pin extends out of the top of the positioning sleeve and is fixedly connected with a tray used for bearing a nut, and threaded holes are formed in the front side and the rear side of the positioning pin. The limiting assemblies are symmetrically and additionally arranged on the top of the positioning sleeve and then connected with the blocking pin fixed to the positioning pin, so that by means of the arrangement of the spring, lateral limiting of the nut is achieved when the nut is placed, the stability of the nut placed on the positioning pin is guaranteed, the falling risk of the nut is reduced, and the service life of the nut is prolonged. And the practical effect of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical tooling, in particular to a nut floating positioning mechanism. Background Art

[0002] A nut is a part that is screwed together with a bolt or screw for fastening. It is a component that must be used in all manufacturing machinery. It is divided into several types according to the material, such as carbon steel, stainless steel, and non-ferrous metals (such as copper).

[0003] There is a Chinese patent with authorization announcement number CN216830438U, which discloses a nut floating positioning mechanism, including a positioning sleeve, a positioning pin arranged in the positioning sleeve, one end of the positioning pin extending from the top of the positioning sleeve, the other end of the positioning pin connected to a buffer spring, the end of the buffer spring connected to a fixing column, the fixing column is installed at the bottom of the inner cavity of the positioning sleeve, and a nut is placed on the top of the positioning pin. When the manipulator grabs the nut, the positioning pin sinks after being compressed, and the buffer spring is compressed. After the nut is clamped, the buffer spring drives the positioning pin to reset, and a new nut can be installed on the reset positioning pin. The structure adopts a flexible mechanism to position and support the nut. When the manipulator grabs the nut, it is not easy to cause damage to the manipulator, the nut and the positioning pin.

[0004] Although the technical solution in the above patent document uses a flexible mechanism to achieve positioning support for the nut, thereby avoiding damage to the manipulator, the nut and the positioning structure when the manipulator is grasped, in actual use, the nut is placed naked on the top of the positioning pin without any auxiliary limiting support. As a result, there is a risk of the nut falling off during the rotation adjustment of the rocker arm or the grasping of the manipulator, thereby reducing the practical effect of the equipment.

[0005] Therefore, those skilled in the art provide a nut floating positioning mechanism to solve the problems raised in the above background technology. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a nut floating positioning mechanism, by symmetrically adding a limit component on the top of the positioning sleeve, and then connecting it with a blocking pin fixed on the positioning pin, and then using the setting of a spring to achieve lateral limiting of the nut when it is placed, thereby ensuring its stability on the positioning pin and reducing the risk of it falling, thereby improving the practicality of the equipment and solving the problems raised in the above-mentioned background technology.

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

[0008] A nut floating positioning mechanism, comprising a fixing seat, and a rocker arm assembled on the fixing seat, a positioning sleeve is installed on the top left end of the rocker arm through a bolt, a spring and a positioning pin are placed inside the positioning sleeve, wherein the positioning pin is located above the spring, and the top end of the positioning pin extends from the top of the positioning sleeve and is fixedly connected to a tray for carrying the nut, threaded holes are provided on the front and rear sides of the positioning pin, and the front and rear threaded holes are symmetrically distributed, each of the threaded holes is movably connected to a blocking pin for guiding, a limiting assembly located on the positioning sleeve is arranged above each of the blocking pins, and a plurality of the limiting assemblies are symmetrically distributed front to back;

[0009] The limiting assembly includes an L-shaped plate fixedly connected to the outer wall of the positioning sleeve by bolts, a rectangular rod movably connected to the side wall of the L-shaped plate, a plurality of the rectangular rods are fixedly connected to a clamping plate at one end close to each other, and a through groove is opened on the rectangular rod, a force-bearing wedge is fixedly connected in the through groove, the inclined surface of the force-bearing wedge is slidably connected to the force-applying wedge, a connecting frame is welded to the side wall of the force-applying wedge, the bottom end of the connecting frame passes through the bottom shell wall of the L-shaped plate, and is connected to the blocking pin below by bolts.

[0010] As a further solution of the utility model, a groove is provided on the top peripheral wall of the positioning pin, and a reed switch for detecting the nut is arranged in the groove.

[0011] As a further solution of the utility model, through grooves are provided on the front and rear sides of the positioning sleeve, and the through grooves correspond to the threaded holes one by one.

[0012] As a further solution of the utility model, one end of the blocking pin away from the positioning pin passes through the through slot and is provided with a U-shaped slot.

[0013] As a further solution of the utility model, a rectangular groove is opened on the side wall of the L-shaped plate, and the rectangular rod is movably connected in the rectangular groove.

[0014] As a further solution of the utility model, the inclined surface of the force-bearing wedge block is provided with a T-shaped groove, and the inclined surface of the force-applying wedge block is integrally provided with a T-shaped bar, and the T-shaped bar is slidably connected to the T-shaped groove.

[0015] As a further solution of the utility model, a rectangular hole is opened on the bottom shell wall of the L-shaped plate, and the bottom end of the connecting frame passes through the rectangular hole.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] By symmetrically adding a limit assembly to the top of the positioning sleeve and then connecting it with a blocking pin fixed on the positioning pin, the nut can be limited to the side when placed with the help of a spring, thereby ensuring its stability on the positioning pin and reducing the risk of it falling, thereby improving the practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the isometric stereoscopic structure of a nut floating positioning mechanism;

[0019] Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of a nut floating positioning mechanism;

[0020] Figure 3 for Figure 2 A schematic diagram of the enlarged local structure.

[0021] In the figure: 1. fixed seat; 2. rocker arm; 3. positioning sleeve; 4. positioning pin; 5. tray; 6. blocking pin; 7. limit assembly; 71. L-shaped plate; 72. rectangular rod; 73. clamping plate; 74. force wedge block; 75. force wedge block; 76. connecting frame; 8. spring. DETAILED DESCRIPTION

[0022] See also Figures 1 to 3 In an embodiment of the utility model, a nut floating positioning mechanism includes a fixing seat 1 and a rocker arm 2 assembled on the fixing seat 1. A positioning sleeve 3 is installed on the top left end of the rocker arm 2 by bolts, and a spring 8 and a positioning pin 4 are placed inside the positioning sleeve 3. Among them, the positioning pin 4 is located above the spring 8, and the top end of the positioning pin 4 extends from the top of the positioning sleeve 3 and is fixedly connected to a tray 5 for carrying a nut. The positioning sleeve 3 is loaded on the rocker arm 2 configured on the fixing seat 1, so as to facilitate the position adjustment of the positioning sleeve 3.

[0023] The front and rear sides of the positioning pin 4 are provided with threaded holes, which are symmetrically arranged. A blocking pin 6 for guiding is movably connected in each threaded hole, and a limiting assembly 7 located on the positioning sleeve 3 is arranged above each blocking pin 6. The plurality of limiting assemblies 7 are symmetrically arranged front to back. The symmetrically arranged limiting assemblies 7 correspond one to one with the symmetrically arranged blocking pins 6, so that it is convenient to synchronously drive and adjust the corresponding limiting assemblies 7 when the blocking pins 6 move.

[0024] The limiting assembly 7 includes an L-shaped plate 71 fixedly connected to the outer wall of the positioning sleeve 3 by bolts. A rectangular rod 72 is movably connected to the side wall of the L-shaped plate 71, and a clamping plate 73 is fixedly connected to the ends of the plurality of rectangular rods 72 that are close to each other, and a through slot is provided on the rectangular rod 72. A force-bearing wedge block 74 is fixedly connected in the through slot, and a force-applying wedge block 75 is slidably connected to the inclined surface of the force-bearing wedge block 74, and a connecting frame 76 is welded to the side wall of the force-applying wedge block 75. The bottom end of the connecting frame 76 passes through the bottom shell wall of the L-shaped plate 71 and is connected to the lower blocking pin 6 by bolts. The displacement adjustment of the rectangular rod 72 is achieved by the sliding connection between the force-applying wedge block 75 and the force-bearing wedge block 74 in the limiting assembly 7.

[0025] A groove is provided on the top peripheral wall of the positioning pin 4, and a magnetic reed switch for detecting the nut is arranged in the groove. Through grooves are provided on the front and rear sides of the positioning sleeve 3, and the through grooves correspond to the threaded holes one by one.

[0026] The end of the blocking pin 6 away from the positioning pin 4 passes through the through slot and is provided with a U-shaped slot. The movable connection between the blocking pin 6 and the through slot allows the positioning pin 4 to move in a directional manner in the positioning sleeve 3. The bottom of the connecting frame 76 is located in the U-shaped slot and then fixed and assembled by bolts.

[0027] A rectangular groove is provided on the side wall of the L-shaped plate 71, and the rectangular rod 72 is movably connected in the rectangular groove. A T-shaped groove is provided on the inclined surface of the force-bearing wedge block 74, and a T-shaped strip is integrally provided on the inclined surface of the force-applying wedge block 75, and the T-shaped strip is slidably connected to the T-shaped groove. The T-shaped structure used for the connection between the force-bearing wedge block 74 and the force-applying wedge block 75 enables the force-bearing wedge block 74 to synchronously drive the rectangular rod 72 with the movement of the force-applying wedge block 75.

[0028] A rectangular hole is formed on the bottom shell wall of the L-shaped plate 71 , and the bottom end of the connecting frame 76 passes through the rectangular hole.

[0029] The working principle of the utility model is as follows: when positioning and placing the nut, the positioning pin 4 is first adjusted downward by the blocking pin 6 to compress the spring 8. During the downward adjustment of the blocking pin 6, the connecting frame 76 in each limit assembly 7 is pulled and adjusted, so that it synchronously drives the force wedge 75 to adjust the displacement. The movement of the force wedge 75 squeezes and forces the force wedge 74, and then during the downward adjustment of the force wedge 75, the rectangular rod 72 drives the clamping plate 73 to stretch and adjust, so as to facilitate the placement of the nut in the tray 5.

[0030] After the nut is placed, the stopper pin 6 is released. Then, under the reset action of the spring 8, the positioning pin 4 is moved upward for adjustment. The positioning pin 4 moves upward and drives the blocking pin 6 to move upward synchronously. The upward movement of the blocking pin 6 causes the connecting frame 76 to drive the force wedge 75 to move and adjust. The movement of the force wedge 75 pulls the force wedge 74 to move, and then drives the rectangular rod 72 to move, and the nuts on the tray 5 are auxiliary clamped through the clamping plate 73 thereon.

[0031] After the nuts are placed, the reed switch detects the relevant signal and sends out an OK / NG signal. The robot then grabs the nuts according to the instructions output by the reed switch.

[0032] When the manipulator touches the placed nut, its weight causes the positioning pin 4 to move downward, compressing the spring 8, and then the movement of the blocking pin 6 synchronizes the movement of each limit assembly 7 to cancel the clamping position of the nut, thereby facilitating the grasping operation.

[0033] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A nut floating positioning mechanism, comprising a fixing seat (1), and a rocker arm (2) mounted on the fixing seat (1), a positioning sleeve (3) being mounted on the top left end of the rocker arm (2) by means of bolts, a spring (8) and a positioning pin (4) being placed inside the positioning sleeve (3), wherein: The positioning pin (4) is located above the spring (8), and the top end of the positioning pin (4) extends from the top of the positioning sleeve (3) and is fixedly connected to a tray (5) for carrying a nut, characterized in that threaded holes are provided on the front and rear sides of the positioning pin (4), the front and rear threaded holes are symmetrically distributed, each of the threaded holes is movably connected to a blocking pin (6) for guiding, and a limiting component (7) located on the positioning sleeve (3) is provided above each of the blocking pins (6), and a plurality of the limiting components (7) are symmetrically distributed front to back; The limiting assembly (7) comprises an L-shaped plate (71) fixedly connected to the outer wall of the positioning sleeve (3) by bolts, a rectangular rod (72) is movably connected to the side wall of the L-shaped plate (71), a plurality of mutually close ends of the rectangular rods (72) are fixedly connected to a clamping plate (73), and a through groove is opened on the rectangular rod (72), a force-bearing wedge block (74) is fixedly connected in the through groove, the inclined surface of the force-bearing wedge block (74) is slidably connected to a force-applying wedge block (75), a connecting frame (76) is welded to the side wall of the force-applying wedge block (75), the bottom end of the connecting frame (76) passes through the bottom shell wall of the L-shaped plate (71), and is connected to the blocking pin (6) below by bolts.

2. A nut floating positioning mechanism according to claim 1, characterized in that: A groove is provided on the top peripheral wall of the positioning pin (4), and a magnetic reed switch for detecting the nut is arranged in the groove.

3. A nut floating positioning mechanism according to claim 1, characterized in that: The front and rear sides of the positioning sleeve (3) are both provided with through grooves, and the through grooves correspond to the threaded holes one by one.

4. A nut floating positioning mechanism according to claim 3, characterized in that: One end of the blocking pin (6) away from the positioning pin (4) passes through the through slot and is provided with a U-shaped slot.

5. The nut floating positioning mechanism according to claim 1, characterized in that: A rectangular groove is provided on the side wall of the L-shaped plate (71), and the rectangular rod (72) is movably connected in the rectangular groove.

6. A nut floating positioning mechanism according to claim 1, characterized in that: The inclined surface of the force-bearing wedge block (74) is provided with a T-shaped groove, and the inclined surface of the force-applying wedge block (75) is integrally provided with a T-shaped bar, and the T-shaped bar is slidably connected to the T-shaped groove.

7. A nut floating positioning mechanism according to claim 1, characterized in that: A rectangular hole is provided on the bottom shell wall of the L-shaped plate (71), and the bottom end of the connecting frame (76) passes through the rectangular hole.

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