Nut fixing structure

Abstract

The utility model aims to provide a nut fixing structure which comprises a material carrying table used for bearing a plastic shell and further comprises a material pressing assembly and a clamping assembly, the material pressing assembly is adjacently arranged on one side of the material carrying table, the material pressing assembly comprises a material pressing seat, a material pressing driving piece and a material pressing rod, the material pressing seat is arranged on the material carrying table, the material pressing driving piece is arranged on the material pressing seat, and the clamping assembly is arranged on the material pressing seat. The material pressing rod penetrates through the material pressing seat, one end of the material pressing rod is connected with the material pressing driving part, the other end of the material pressing rod extends to the side, close to the plastic shell, of the material pressing seat, the clamping assembly comprises a sleeve, an ejector head and a plurality of clamping strips, the sleeve is arranged at the end, away from the material pressing driving part, of the material pressing rod in a sleeving mode, and the clamping strips are arranged on the outer side wall of the sleeve in a sliding mode; the clamping strips are circumferentially distributed around the sleeve at equal angles, the ejector head is connected to the material pressing rod in a threaded mode so that the ejector head and the material pressing rod can jointly clamp the sleeve, and the ejector head abuts against the clamping strips. In this way, the embedded nuts of different sizes can be fixed in a compatible mode.

Description

Technical Field

[0001] The utility model relates to the technical field of nut assembly, in particular to a nut fixing structure. Background Technique

[0002] A nut, also known as a screw nut, is a fixing tool with a hole in the center and internal threads on the inner side of the hole. It is often used in combination with screws of appropriate sizes to fix two or more components together. Nuts are mostly hexagonal, followed by square, or Figure 4 the embedded nut 20 shown in the figure for embedding into a plastic shell.

[0003] In order to facilitate the disassembly and assembly of two plastic shells and improve the appearance of the plastic shell formed by buckling the two plastic shells, the embedded nut 20 is often buried in one of the plastic shells. In this way, after buckling the two plastic shells, a screw is passed through one of the plastic shells and screwed into the embedded nut 20 of the other plastic shell, and the two plastic shells can be locked and fixed.

[0004] When the embedded nut 20 is buried in the plastic shell, a blind hole needs to be reserved at a specified position in the plastic shell, and the embedded nut 20 is pressed into the blind hole by means of cold pressing, hot pressing, etc. Since a plurality of pointed teeth 21 are provided on the outer side wall of the embedded nut 20, each pointed tooth 21 will damage the inner side wall of the blind hole of the plastic shell, so that the inner side wall of the blind hole generates a great frictional force on the embedded nut 20 to retain it in the blind hole. Especially when the embedded nut 20 is pressed into the blind hole by hot pressing, since the temperature of the embedded nut 20 is high, it will melt the inner side wall of the blind hole, so that the plastic and the embedded nut 20 are fixed together by hot melting. In this way, the embedded nut 20 is fixed in the plastic shell.

[0005] The Chinese patent document with the publication number CN217890121U discloses a nut fixing device for fixing nuts, which includes a positioning device and a moving clamping device. The positioning device includes a carrier and an induction component. The carrier is used for placing the workpiece to be processed, and the induction component is fixed on the carrier and used for detecting whether the position of the workpiece is correct; the moving clamping device includes two clamping arms, and the two clamping arms are arranged on both sides of the carrier so as to be far away from or close to each other. A nut fixing member is provided on the clamping arm, and the nut fixing member is used for fixing the nut. After the two clamping arms are close to each other to complete the fixing of the nut, they are far away from each other and reset. In this way, the nut is fixed on the plastic shell through the nut fixing member.

[0006] However, the existing nut fixing device has the following limitations in actual use: Since the plastic shell will be updated and iterated, for example, the size of the blind hole can be changed according to customer needs to facilitate the installation of embedded nuts 20 of different sizes. However, since the nut fixing parts used to fix the nuts in the existing nut fixing device lack compatibility considerations, they often need to be replaced together with the clamping arm, resulting in poor device compatibility and difficulty in adapting to the installation requirements of embedded nuts 20 of different sizes. Therefore, in order to solve the above problems, those skilled in the art have improved the existing nut fixing device. Utility Model Content

[0007] The utility model aims to overcome the shortcomings of the prior art and provide a nut fixing structure which is compatible with fixing embedded nuts of different sizes.

[0008] The purpose of this utility model is achieved through the following technical solutions:

[0009] A nut fixing structure includes a loading platform for supporting a plastic shell, and further includes:

[0010] A material pressing assembly, the material pressing assembly is adjacently arranged on one side of the material loading platform, the material pressing assembly comprises a material pressing seat, a material pressing driving member and a material pressing rod, the material pressing seat is arranged on the material loading platform, the material pressing driving member is arranged on the material pressing seat, the material pressing rod is passed through the material pressing seat, one end of the material pressing rod is connected to the material pressing driving member, and the other end of the material pressing rod extends to a side of the material pressing seat close to the plastic shell; and

[0011] The clamping assembly includes a sleeve, a plug and a plurality of clamping strips. The sleeve is sleeved on the end of the pressing rod away from the pressing driving member. Each clamping strip is slidably arranged on the outer wall of the sleeve, and each clamping strip is distributed at equal angles around the sleeve. The plug is screwed on the pressing rod so that the plug and the pressing rod can clamp the sleeve together, and the plug abuts against each clamping strip.

[0012] Optionally, a guide sleeve is provided in the pressing seat, and the pressing rod is adaptively inserted into the guide sleeve.

[0013] Optionally, a supporting step is provided on one end of the pressing rod away from the pressing driving member, and the sleeve abuts against the supporting step.

[0014] Optionally, a clamping plane is provided on the outer side wall of the press rod.

[0015] Optionally, a plurality of slide grooves are provided on the outer side wall of the sleeve, and each of the clamping strips is slidably disposed in each of the slide grooves in a one-to-one corresponding manner.

[0016] Optionally, the cross-section of the slide groove is a T-shaped structure.

[0017] Optionally, a plurality of locking teeth are provided on the side surface of the card strip away from the sleeve, and the locking teeth are equally spaced from each other.

[0018] Optionally, the locking teeth and the card strip are an integrally formed temperature-resistant plastic structure.

[0019] Optionally, a sensor is further provided on the material loading table, and the detection end of the sensor faces the sleeve.

[0020] Optionally, the material pressing driving member is a cylinder.

[0021] Compared with the prior art, the present utility model has at least the following advantages:

[0022] The nut fixing structure of the present utility model includes a material loading table for supporting a plastic shell, and further includes a material pressing assembly and a clamping assembly. The material pressing assembly is adjacently arranged on one side of the material loading table. The material pressing assembly includes a material pressing seat, a material pressing driving member and a material pressing rod. The material pressing seat is arranged on the material loading table, the material pressing driving member is arranged on the material pressing seat, the material pressing rod passes through the material pressing seat, and one end of the material pressing rod is connected to the material pressing driving member. The other end of the material pressing rod extends to the side of the material pressing seat close to the plastic shell. The clamping assembly includes a sleeve, a top head and a plurality of card strips. The sleeve is sleeved on the end of the material pressing rod away from the material pressing driving member. Each card strip is slidably arranged on the outer side wall of the sleeve, and each card strip is circumferentially and equally angularly distributed around the sleeve. The top head is screwed onto the material pressing rod so that the top head and the material pressing rod jointly clamp the sleeve, and the top head abuts against each card strip. In this way, the sleeve is locked and fixed on the material pressing rod by the top head, so that the clamping assembly is a detachable installation structure, and thus it can be compatible with fixing embedded nuts of different sizes. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 Structural schematic diagram of the nut fixing structure according to an embodiment of the present utility model;

[0025] Figure 2 For Figure 1 Partial structural schematic diagram of the nut fixing structure shown;

[0026] Figure 3 Structural schematic diagram of the clamping assembly according to an embodiment of the present utility model;

[0027] Figure 4 Structural schematic diagram of the embedded nut for installation into a plastic shell in the present utility model.

[0028] Explanation of reference numerals:

[0029] 20. Embedded nut; 21. Sharp teeth; 10. Nut fixing structure; 100. Loading platform; 200. Pressing component; 300. Clamping component; 210. Pressing seat; 220. Pressing driving member; 230. Pressing rod; 310. Sleeve; 320. Thrust head; 330. Clamping strip; 240. Guide sleeve; 231. Thrust step; 232. Clamping plane; 311. Slide groove; 340. Clamping tooth; 400. Inductor. Detailed implementation manners

[0030] To facilitate understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings.

[0031] As Figure 1 shown, a nut fixing structure 10 includes a loading platform 100, a pressing component 200 and a clamping component 300. The loading platform 100 is used to support the plastic shell. The pressing component 200 is disposed adjacent to one side of the loading platform 100. The pressing component 200 includes a pressing seat 210, a pressing driving member 220 and a pressing rod 230. The pressing seat 210 is disposed on the loading platform 100. The pressing driving member 220 is disposed on the pressing seat 210. The pressing rod 230 passes through the pressing seat 210, and one end of the pressing rod 230 is connected to the pressing driving member 220. The other end of the pressing rod 230 extends to the side of the pressing seat 210 close to the plastic shell. The clamping component 300 includes a sleeve 310, a thrust head 320 and a plurality of clamping strips 330. The sleeve 310 is sleeved on the end of the pressing rod 230 away from the pressing driving member 220. Each clamping strip 330 is slidably disposed on the outer sidewall of the sleeve 310, and each clamping strip 330 is circumferentially and equally angularly distributed around the sleeve 310. The thrust head 320 is screwed onto the pressing rod 230 so that the thrust head 320 and the pressing rod 230 jointly clamp the sleeve 310, and the thrust head 320 abuts against each clamping strip 330.

[0032] It should be noted that the blanking component 200 is installed on the loading table 100, and the clamping component 300 is detachably installed on the blanking component 200. In this way, after placing the plastic shell on the loading table 100, the embedded nut 20 is fixed by the clamping component 300, and finally the blanking component 200 presses the embedded nut 20 into the blind hole of the plastic shell. Specifically, the blanking seat 210 is installed on the loading table 100 with adjustable position. For example, a waist-shaped hole is opened on the blanking seat 210, and then a screw passes through the waist-shaped hole and is screwed onto the loading table 100, so that the blanking seat 210 can be fixed on the loading table 100, and the position of the blanking seat 210 relative to the loading table 100 is adjustable. Further, the blanking driving member 220 is installed on the blanking seat 210. In one embodiment, the blanking driving member 220 is a linear driving source, such as a cylinder. The blanking rod 230 passes through the blanking seat 210. One end of the blanking rod 230 is connected to the output shaft of the blanking driving member 220, and the other end of the blanking rod 230 extends to the side of the blanking seat 210 close to the plastic shell and protrudes. In this way, the blanking driving member 220 drives the blanking rod 230 to perform telescopic movement relative to the blanking seat 210, so that the blanking rod 230 drives the clamping component 300 to approach or move away from the plastic shell. Further, the sleeve 310 is sleeved on the end of the blanking rod 230 away from the blanking driving member 220, and the top head 320 is screwed and fixed to the blanking rod 230. In this way, the sleeve 310 is locked and fixed on the blanking rod 230 by using the top head 320. Further, each clamping strip 330 is slidably installed on the outer side wall of the sleeve 310, so that each clamping strip 330 is a detachable installation structure relative to the sleeve 310. Among them, each clamping strip 330 is also held and fixed by the top head 320. The embedded nut 20 is sleeved on the sleeve 310, so that each clamping strip 330 jointly clamps and fixes the embedded nut 20. And the clamping component 300 can be replaced according to the actual size of the embedded nut 20, so that the nut fixing structure 10 of the present application can be compatible with fixing embedded nuts 20 of different sizes. In addition, it should be noted that since the inner side wall of the embedded nut 20 is provided with internal threads and is relatively rough, by setting the clamping strip 330 as a detachable installation structure relative to the sleeve 310, after using for a certain period of time, due to wear of the clamping strip 330, the clamping strip 330 can be replaced separately, so that the embedded nut 20 can be reliably fixed in the plastic shell, and the position deviation and skew of the embedded nut 20 can be avoided.

[0033] As Figure 1 shown, in one embodiment, a guide sleeve 240 is arranged in the blanking seat 210, and the blanking rod 230 is adaptively inserted through the guide sleeve 240.

[0034] It should be noted that by installing the guide sleeve 240, the stability of the sliding of the blanking rod 230 relative to the blanking seat 210 can be improved. For example, the guide sleeve 240 is a linear bearing.

[0035] AsFigure 2 As shown, in one embodiment, a holding step 231 is provided at one end of the pressure bar 230 away from the pressure driving member 220, and the sleeve 310 abuts against the holding step 231. In this way, the sleeve 310 is limited by the holding step 231, so that the top head 320 and the holding step 231 jointly clamp and fix the sleeve 310.

[0036] As Figure 2 shown, in one embodiment, a clamping plane 232 is provided on the outer side wall of the pressure bar 230. For example, two clamping planes 232 are provided, and the two clamping planes 232 are axially symmetrically distributed with respect to the axis of the pressure bar 230. In this way, by providing the two clamping planes 232, it is convenient for a tool to clamp and fix the pressure bar 230, and then lock and fix the top head 320 on the pressure bar 230.

[0037] As Figure 3 shown, in one embodiment, a plurality of chutes 311 are provided on the outer side wall of the sleeve 310, and each clamping strip 330 is slidably arranged in each chute 311 in a corresponding and adapted manner. Further, in one embodiment, the cross section of the chute 311 is a T-shaped structure. Correspondingly, the cross section of the clamping strip 330 is also a T-shaped structure, so that the clamping strip 330 is adaptively inserted into the chute 311, so that the clamping strip 330 is detachably mounted on the sleeve 310, making the clamping strip 330 easy to replace.

[0038] As Figure 3 shown, in one embodiment, a plurality of teeth 340 are provided on one side surface of the clamping strip 330 away from the sleeve 310, and the teeth 340 are equidistantly distributed.

[0039] It should be noted that in order to ensure that the embedded nut 20 is reliably supported by each clamping strip 330 and to avoid no gap between the embedded nut 20 and the clamping strip 330, teeth 340 are provided on the outer side wall of the clamping strip 330. In this way, the embedded nut 20 is clamped by the teeth 340.

[0040] In one embodiment, the teeth 340 and the clamping strip 330 are an integrally formed temperature-resistant plastic structure. In this way, the teeth 340 have a certain softness, so that the embedded nut 20 can be stably clamped. Secondly, the teeth 340 and the clamping strip 330 can withstand the high temperature of the embedded nut 20 (temperature range: 140°C to 280°C), so that the clamping strip 330 can reliably clamp the embedded nut 20.

[0041] As Figure 1 shown, in one embodiment, a sensor 400 is further provided on the material loading table 100, and the detection end of the sensor 400 faces the sleeve 310. It should be noted that, for example, the sensor 400 is a metal detector, so that it can detect whether the embedded nut 20 is placed on the clamping component 300, thereby avoiding misoperation of the device.

[0042] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. Among them, the installation / fixing / setting mentioned in the present utility model can be understood to include, but not limited to, locking and fixing by using screws, unless otherwise specifically defined. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A nut fixing structure, comprising a loading platform for supporting a plastic shell, characterized in that, Further comprising: A blank holder assembly, the blank holder assembly being adjacently disposed on one side of the loading table. The blank holder assembly includes a blank holder base, a blank holder driving member, and a blank holder rod. The blank holder base is disposed on the loading table. The blank holder driving member is disposed on the blank holder base. The blank holder rod is inserted through the blank holder base, and one end of the blank holder rod is connected to the blank holder driving member, and the other end of the blank holder rod extends to the side of the blank holder base close to the plastic shell. And A clamping assembly, the clamping assembly includes a sleeve, a top head, and a plurality of clamping strips. The sleeve is sleeved on the end of the blank holder rod away from the blank holder driving member. Each of the clamping strips is slidably disposed on the outer side wall of the sleeve, and each of the clamping strips is circumferentially and equally angularly distributed around the sleeve. The top head is screwed onto the blank holder rod so that the top head and the blank holder rod jointly clamp the sleeve, and the top head abuts against each of the clamping strips.

2. The nut fixing structure according to claim 1, characterized in that, A guide sleeve is disposed in the blank holder base, and the blank holder rod is adaptively inserted through the guide sleeve.

3. The nut fixing structure according to claim 1, wherein A holding step is provided on the end of the blank holder rod away from the blank holder driving member, and the sleeve abuts against the holding step.

4. The nut fixing structure according to claim 1, characterized in that, A clamping plane is provided on the outer side wall of the blank holder rod.

5. The nut fixing structure according to claim 1, characterized in that, A plurality of sliding grooves are provided on the outer side wall of the sleeve, and each of the clamping strips is slidably disposed in each of the sliding grooves in an adaptive manner.

6. The nut fixing structure according to claim 5, characterized in that, The cross section of the sliding groove is a T-shaped structure.

7. The nut fixing structure according to claim 6, characterized in that, A plurality of teeth are provided on the side surface of the clamping strip away from the sleeve, and the teeth are equally spaced from each other.

8. The nut fixing structure according to claim 7, wherein, The teeth and the clamping strip are an integrally formed temperature-resistant plastic structure.

9. The nut fixing structure according to claim 1, characterized in that, An inductor is further provided on the loading table, and the detection end of the inductor faces the sleeve.

10. The nut fixing structure according to claim 1, characterized in that, The blank holder driving member is a cylinder.

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