A tightening mechanism for assembling a foot nut and screw

Abstract

The utility model relates to a tightening mechanism for bottom nut and screw assembly, it includes nut positioning seat, assembly driver, wherein the nut positioning seat forms with the positioning slot matched with nut on, and the tightening mechanism still includes screw positioning seat, compression part, wherein the screw positioning seat forms the gap that penetrates from top to bottom, and the compression part is used for the head of screw and is loosened. The utility model is based on the cooperation of the gap on the screw positioning seat and the compression part on one side, realizes the positioning and compression fixed under the coincidence of screw maintaining center line and nut center line, not only can directly observe whether the screw exists position deviation, ensures that the screw and nut are accurately aligned up and down, and the feeding operation is more simple, convenient, effectively improves the assembly efficiency, on the other hand based on screw fixed, through the screw assembly and is tightened from below to above with the screw, avoids the wear and tear of screw head, improves the product yield.

Description

Technical Field

[0001] This utility model belongs to the field of assembly technology, specifically relating to a tightening mechanism for assembling base nuts and screws. Background Technology

[0002] The base, as a bottom support and balancing component, generally includes a base nut and a screw. During production, the base nut needs to be assembled and tightened onto the screw.

[0003] Currently, a Chinese patent with publication number CN212552625U discloses a foot assembly mechanism, which includes a base plate, a vertical plate on the top surface of the base plate, and a reinforcing plate on the right-angle side where the vertical plate meets the base plate; a track plate on the vertical plate, a cylinder plate on the top of the track plate, and a reinforcing rib on the right-angle side where the cylinder plate meets the track plate; a track on the track plate, a reciprocating slide rail on the track, an electric screwdriver on the slide rail, a cylinder connected to the top of the slide rail, and the cylinder on the cylinder plate; a magnetic limit switch on the outer wall of the cylinder, and a cylinder control solenoid valve connected to the cylinder via a pipeline, the cylinder control solenoid valve being located on the vertical plate; a screw positioning seat connected to the end of the electric screwdriver, and a nut positioning seat that mates with the screw positioning seat on the base plate.

[0004] However, in actual production, existing technology requires manual insertion of the screw head into the fixing hole at the bottom of the screw positioning seat from bottom to top, so that the screw head can be fixed through the fixing surface and fixing groove on the inner wall of the fixing hole. This method is prone to the following defects: 1. Due to the limited line of sight, it is difficult to directly observe whether the screw head is in place. It is easy for the screw head to be misplaced due to operational errors, which may cause the screw to fall off accidentally or fail to be accurately aligned with the nut during subsequent assembly. This requires frequent manual adjustments, resulting in low assembly efficiency. 2. During assembly, if the torque is too high, it can easily cause the screw head (the outer material is usually plastic) to shift relative to the inner wall of the fixing hole, resulting in wear on the outer wall of the screw head. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an improved tightening mechanism for assembling base nuts and screws.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A tightening mechanism for assembling a base nut and a screw includes a nut positioning seat and an assembly driver. The nut positioning seat has a positioning groove that matches the nut. The tightening mechanism also includes a screw positioning seat and a clamping component disposed above the positioning groove. The screw positioning seat has a through notch that extends vertically, allowing the screw to be hooked at the edge of the notch from the head and protrude downwards from the notch from the tail. The centerline of the screw coincides with the centerline of the nut positioned in the positioning groove. The clamping component is used to clamp or loosen the head of the screw, and clamps and fixes the head of the screw downwards based on the clamping component. The assembly driver is used to drive the nut positioning seat and cause the nut to assemble and tighten with the screw from bottom to top.

[0007] Preferably, the screw locating seat also has a locating surface that extends along the edge of the notch and matches the outer contour of the screw head. When the screw is attached to the edge of the notch from the head, the sidewall of the screw head simultaneously fits into the locating surface. This ensures that the screw is accurately placed in place each time.

[0008] Preferably, the screw locating seat is recessed from top to bottom to form a groove, wherein the sidewalls of the groove form a locating surface and the bottom forms a notch. This design is simple and easy to manufacture.

[0009] Preferably, the notch extends horizontally through one side wall of the screw locating seat, forming an opening; the tightening mechanism also includes an auxiliary component for abutting the side of the screw head exposed from the opening to keep the screw head in contact with the locating surface. Here, the position of the screw can be further adjusted and corrected by the auxiliary component before tightening to ensure precise alignment of the screw and nut.

[0010] Preferably, the width of the opening is greater than the width of the screw head; when the screw head abuts the positioning surface, the screw head partially protrudes outward from the opening. This allows the screw to be loaded during horizontal displacement or unloaded after assembly, making it particularly suitable for automated loading and unloading processes.

[0011] Preferably, the auxiliary component includes an auxiliary seat, an auxiliary module, and an auxiliary power component disposed on the open side. The auxiliary seat has a guide channel extending horizontally in the direction of the open. The auxiliary module is inserted into the guide channel and exposed at one end to form an abutment end that matches the outer contour of the screw head. The auxiliary power component drives the auxiliary module to reciprocate along the guide channel.

[0012] Preferably, the clamping component includes a clamping module disposed directly above the notch and a clamping power component that drives the clamping module to reciprocate up and down.

[0013] Specifically, in the orthographic projection on the horizontal plane, the clamping module covers the head of the screw. Here, it is ensured that the screw head bears the downward clamping force evenly, preventing skewing.

[0014] Preferably, the screw positioning seat remains fixed, the nut positioning seat has a connecting positioning groove in the middle and a clearance hole that matches the tail of the screw, and the assembly driver is used to drive the nut positioning seat to move synchronously up and down and rotate around the center line of the nut for assembly.

[0015] Furthermore, the nut is a hexagonal nut; and / or, one side of the positioning groove is open to form a feed port, allowing the nut to horizontally pass through the feed port into the positioning groove. Here, the nut can be loaded during horizontal displacement or unloaded after assembly, making it particularly suitable for automated nut loading processes.

[0016] Due to the implementation of the above technical solution, this utility model has the following advantages compared with the prior art: Existing technologies are limited by the viewing angle, making it difficult to directly observe whether the screw head is properly positioned. Operational errors can easily cause the screw head to deviate from its position, leading to accidental screw detachment or inaccurate alignment with the nut during subsequent assembly. This necessitates frequent manual adjustments, resulting in low assembly efficiency. Furthermore, excessive torque during assembly can easily cause relative displacement of the screw head (usually made of plastic) relative to the inner wall of the fixing hole, causing wear on the outer wall of the screw head. This application addresses these shortcomings by comprehensively designing the tightening mechanism for assembling the base nut and screw, cleverly resolving the deficiencies of existing technologies. With this tightening mechanism, the nut is placed and positioned in the positioning groove on the nut positioning seat. The screw is then positioned with its head hooked onto the notch edge of the screw positioning seat, and its tail protruding downwards from the notch, ensuring the screw's centerline coincides with the nut's centerline in the positioning groove. A clamping component then presses down and secures the screw head, fixing it in place. Finally, an assembly driver drives the nut positioning seat, causing the nut to be tightened from bottom to top with the screw. Therefore, compared with the prior art, this utility model, on the one hand, is based on the cooperation between the notch on the screw positioning seat and the clamping component, so as to achieve positioning and clamping fixation with the screw centerline coinciding with the nut centerline. This not only allows direct observation of whether there is a positional deviation of the screw, ensuring that the screw and nut are accurately aligned vertically, but also makes the loading operation simpler and more convenient, effectively improving assembly efficiency. On the other hand, based on the screw fixing, the nut is assembled and tightened with the screw from bottom to top, avoiding wear on the screw head and improving the product yield. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the tightening mechanism for assembling the base nut and screw in this embodiment; Figure 2 This is a front view schematic diagram of the tightening mechanism for assembling the base nuts and screws in this embodiment, in the assembled state. Figure 3 for Figure 2 Top view of a partial structure in the middle; Figure 4 for Figure 1 Enlarged schematic diagram of the structure of the center screw positioning seat; Wherein: 1. Nut positioning seat; 10. Positioning groove; 11. Feed inlet; 12. Clearance hole; 2. Screw positioning seat; 20. Groove; k. Notch; k0. Opening; m. Positioning surface; 3. Auxiliary component; 30. Auxiliary seat; t. Guide channel; 31. Auxiliary module; 310. Abutting end; 32. Auxiliary power component; 4. Clamping component; 40. Clamping module; 41. Clamping power component; 5. Assembly driver; M. Nut; D. Screw; D1. Head; D2. Tail. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0020] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0024] See Figures 1 to 4 As shown, the tightening mechanism for assembling the base nut and screw in this embodiment includes a nut positioning seat 1, a screw positioning seat 2, an auxiliary component 3, a clamping component 4, and an assembly driver 5.

[0025] Specifically, the top surface of the nut positioning seat 1 is formed with a positioning groove 10 that matches the nut M. The nut M is placed and positioned in the positioning groove 10. In this embodiment, the nut M is a hexagonal nut, and the inner wall of the positioning groove 10 can fit against the side wall of the nut M.

[0026] Meanwhile, one side of the positioning groove 10 is open to form a feed port 11, allowing the nut M to horizontally pass through the feed port 11 and enter the positioning groove 10. This allows the nut to be loaded during horizontal displacement or unloaded after assembly, making it particularly suitable for automated nut loading processes. Furthermore, the nut positioning seat 1 has a clearance hole 12 in its middle portion that connects to the positioning groove 10 and matches the tail of the screw D, so that during assembly, the tail of the screw D can be inserted into the clearance hole 12 to avoid interference.

[0027] In this example, the screw positioning seat 2 is located above the positioning groove 10 and has a through notch k. The screw D has a head D1 and a threaded tail D2. The screw D can be hung on the edge of the notch k from the head D1 and protrude downward from the notch k from the tail D2. The center line of the screw D coincides with the center line of the nut M positioned in the positioning groove 10.

[0028] To facilitate implementation, a positioning surface m is also formed on the screw positioning seat 2, extending along the edge of the notch k and matching the outer contour of the screw head. When the screw D is hung from the head on the edge of the notch k, the side wall of the screw head simultaneously fits against the positioning surface m. This ensures that the screw is accurately placed in place each time.

[0029] In some specific embodiments, the screw positioning seat 2 is recessed from top to bottom to form a groove 20, wherein the sidewall of the groove 20 forms a positioning surface m and the bottom forms a notch k. Here, the structure is simple and easy to process and form.

[0030] Meanwhile, the notch k extends horizontally through one side wall of the screw locating seat 2, forming an opening k0. The width of the opening k0 is greater than the width of the screw head D. When the screw head D abuts against the locating surface, the screw head D partially protrudes outward from the opening k0. Here, the screw can be loaded during horizontal displacement or unloaded after assembly, making it particularly suitable for automated loading and unloading processes.

[0031] In this example, auxiliary component 3 is used to abut against the exposed side of the screw head D to keep the screw head D in contact with the positioning surface. Here, the position of the screw can be further adjusted and corrected by the auxiliary component before tightening to ensure precise alignment of the screw and nut.

[0032] In some specific embodiments, the auxiliary component 3 includes an auxiliary seat 30, an auxiliary module 31, and an auxiliary power component 32 disposed on one side of the opening k0. The auxiliary seat 30 has a guide channel t extending horizontally towards the opening k0. The auxiliary module 31 is inserted into the guide channel t and exposed at one end, forming an abutment end 310 that matches the outer contour of the screw head D. The auxiliary power component 32 drives the auxiliary module 31 to reciprocate along the guide channel t. The auxiliary power component 32 is a horizontally telescopic cylinder.

[0033] In this example, the clamping component 4 is used to clamp or loosen the head of the screw D, and based on the clamping component 4 pressing down and fixing the head of the screw D, the assembly driver 5 is used to drive the nut positioning seat 1 and drive the nut M to assemble and tighten with the screw D from bottom to top.

[0034] In some specific embodiments, the clamping component 4 includes a clamping module 40 disposed directly above the notch k and a clamping power component 41 that drives the clamping module 40 to reciprocate up and down. In the orthographic projection on the horizontal plane, the clamping module 40 covers the head of the screw D to ensure that the screw head is evenly subjected to the downward clamping force and to avoid skewing. The clamping power component 41 adopts a vertically telescopic cylinder.

[0035] In addition, the screw positioning seat 2 remains fixed, and the assembly driver 5 is used to drive the nut positioning seat 1 to move synchronously up and down and rotate around the center line of the nut M for assembly and tightening. As for the assembly driver 5, it is a conventional power component and will not be described in detail here.

[0036] In summary, after adopting this tightening mechanism, the nut is placed and positioned in the positioning groove on the nut positioning seat. The screw is hung from the notch edge on the screw positioning seat from the head and protrudes downward from the notch, while keeping the center line of the screw coincide with the center line of the nut positioned in the positioning groove. Then, the head of the screw is pressed down and fixed by the clamping component, so that the screw is fixed. Finally, the nut positioning seat is driven by the assembly driver and the nut is assembled and tightened from bottom to top with the screw. Therefore, compared with the prior art, this utility model has several advantages. First, based on the cooperation between the notch on the screw positioning seat and the clamping component, it achieves positioning and clamping fixation of the screw while keeping the center line of the screw and nut coincide. This not only allows direct observation of whether there is any positional deviation of the screw, ensuring precise vertical alignment of the screw and nut, but also simplifies and facilitates the loading operation, effectively improving assembly efficiency. Second, based on screw fixing, the nut is assembled and tightened with the screw from bottom to top, avoiding wear on the screw head and improving product yield. Third, based on the auxiliary component, the position of the screw can be further adjusted and corrected before clamping to ensure precise alignment of the screw and nut. Fourth, the screw and nut can be loaded during horizontal displacement or unloaded after assembly, making it particularly suitable for automated loading and unloading processes.

[0037] The present utility model has been described in detail above, with the aim of enabling those skilled in the art to understand its contents and implement it. However, this description should not be construed as limiting the scope of protection of the present utility model. All equivalent changes or modifications made in accordance with the spirit and essence of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A tightening mechanism for assembling a base nut and a screw, comprising a nut positioning seat and an assembly driver, wherein the nut positioning seat has a positioning groove that matches the nut, characterized in that, The tightening mechanism further includes a screw positioning seat and a clamping component disposed above the positioning groove. The screw positioning seat has a through notch that extends vertically, allowing the screw to be hooked at the edge of the notch from the head and protrude downwards from the notch from the tail. The center line of the screw coincides with the center line of the nut positioned in the positioning groove. The clamping component is used to clamp or loosen the head of the screw, and clamps and fixes the head of the screw downwards based on the clamping component. The assembly driver is used to drive the nut positioning seat and drive the nut to assemble and tighten with the screw from bottom to top.

2. The tightening mechanism for assembling the base nut and screw according to claim 1, characterized in that, The screw positioning seat also has a positioning surface that extends along the edge of the notch and matches the outer contour of the screw head. When the screw is hung from the head on the edge of the notch, the sidewall of the screw head simultaneously fits the positioning surface.

3. The tightening mechanism for assembling the base nut and screw according to claim 2, characterized in that, The screw positioning seat is recessed from top to bottom to form a groove, wherein the sidewall of the groove forms the positioning surface and the bottom forms the notch.

4. The tightening mechanism for assembling the base nut and screw according to claim 2, characterized in that, The notch extends horizontally through one side wall of the screw locating seat and forms an opening; the tightening mechanism also includes an auxiliary component for pressing against the side of the screw head exposed from the opening to keep the screw head in contact with the locating surface.

5. The tightening mechanism for assembling the base nut and screw according to claim 4, characterized in that, The width of the opening is greater than the width of the screw head; when the screw head abuts the positioning surface, the screw head partially protrudes outward from the opening.

6. The tightening mechanism for assembling the base nut and screw according to claim 4 or 5, characterized in that, The auxiliary component includes an auxiliary seat, an auxiliary module, and an auxiliary power component disposed on one side of the opening. The auxiliary seat has a guide channel extending horizontally in the direction of the opening. The auxiliary module is inserted into the guide channel and is exposed at one end to form an abutment end that matches the outer contour of the screw head. The auxiliary power component drives the auxiliary module to reciprocate along the guide channel.

7. The tightening mechanism for assembling the base nut and screw according to claim 1, characterized in that, The clamping component includes a clamping module disposed directly above the notch and a clamping power component that drives the clamping module to reciprocate up and down.

8. The tightening mechanism for assembling the base nut and screw according to claim 7, characterized in that, In its orthographic projection on a horizontal plane, the clamping module covers the head of the screw.

9. The tightening mechanism for assembling the base nut and screw according to claim 1, characterized in that, The screw positioning seat remains fixed, the nut positioning seat has a connecting positioning groove in the middle and a clearance hole that matches the tail of the screw, and the assembly driver is used to drive the nut positioning seat to move synchronously up and down and rotate around the center line of the nut for assembly.

10. The tightening mechanism for assembling the base nut and screw according to claim 1, characterized in that, The nut is a hexagonal nut; and / or, one side of the positioning groove is open to form a feed inlet, and the nut can horizontally pass through the feed inlet to enter the positioning groove.

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