Anti-loosening and anti-dismounting nut kit and packaging method of nut kit

Abstract

The invention relates to the technical field of fasteners, in particular to an anti-loosening and anti-dismounting nut suite and a packaging method of the nut suite, the nut suite is composed of a bolt, a nut and a protection structure, and the protection structure comprises a protection body with a protection cavity, a guide piece, an elastic supporting piece and an elastic end sealing piece; the elastic supporting piece is arranged at one end of the protection cavity; the elastic end sealing piece is detachably arranged at the other end of the protection cavity; the elastic end sealing piece, the guide piece, the nut, the bolt and the elastic supporting piece are distributed in the axial direction of the protection body, and the elastic supporting piece and the elastic end sealing piece are provided with a first elastic body and a second elastic body respectively. When the elastic end sealing piece is pressed, the second elastic body supplies air to the nut through the guide piece and cleans the nut; when the elastic supporting piece is pressed, the bolt is exposed out of a cavity opening of the protection cavity, and when the elastic supporting piece recovers, the bolt retracts into the protection cavity and is wrapped by the first elastic body, the cleaning of the nut and the bolt is completed while the filling beads are packaged, the production technological process is reduced, and the productivity is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of fasteners, and in particular to a nut kit for preventing loosening and disassembly and a packaging method of the nut kit. Background Art

[0002] Anti-loosening and anti-removal nuts, also known as "anti-theft nuts" (hereinafter referred to as "nuts"), are one of the more mature fasteners at present. In the prior art (refer to the anti-theft nuts disclosed in the authorization announcement number CN201818623U), the general structure of the nut is: an anti-theft groove (also referred to as an anti-removal groove, the same below) is set on the inner wall of the nut, and an anti-theft part (such as: steel balls, the same below) is set in the anti-theft groove. Since the depth of the anti-theft groove increases along the thread direction, therefore, after the nut and the bolt are assembled and show signs of loosening, the anti-theft part moves from the deep end of the anti-theft groove to the shallow end of the anti-theft groove, thereby preventing the bolt from being screwed out, thereby achieving the purpose of preventing loosening and removing.

[0003] At present, in the last step of producing anti-theft nuts, it is necessary to put the anti-theft parts into the anti-theft groove of the nut and add a plug sleeve to prevent the anti-theft parts from falling off, so as to complete the production of the anti-theft nuts for subsequent packaging, delivery and sales. For example, the applicant applied for an invention patent with patent number ZL202010068749.5 on January 21, 2020: an automatic assembly production line for anti-theft nuts. In this invention patent, the applicant successfully installed the anti-theft parts into the nuts, and at the same time achieved the purpose that the anti-theft parts are not easy to fall off during delivery and sales. However, it was found in the actual production process that Since the nut itself requires processing techniques such as tapping and grooving, it is difficult to ensure that it is carried out in a dust-free workshop. This leads to the phenomenon that impurities are adsorbed on the inner threads of the nut. During the assembly process of the sleeve and the nut, due to the relative movement of the two, the impurities on the inner threads will scratch the nut (not only that, when the nut and the bolt are actually assembled and used, the impurities will also affect the smoothness of the assembly of the two). Therefore, before the sleeve and the nut are assembled, the inner ring of the nut needs to be cleaned. Therefore, the company also needs to add a special nut cleaning production line to ensure the product qualification rate, which increases the economic burden of the company.

[0004] In addition, when nuts are sold, they are generally sold together with bolts. Since the structure of bolts is different from that of nuts, existing nuts and bolts are sold in separate packages (packed separately). That is, since bolts have external threads, protective nets need to be placed on the bolts during packaging to avoid damage to the external threads of the bolts during transportation, movement, and handling. However, nuts have the same common problem as nuts during production, that is, they also need to be cleaned before packaging. However, bolts and nuts have different structures and different cleaning requirements. Therefore, it is generally difficult to share the same cleaning equipment with nuts.

[0005] Third, when bolts are sold, since the outer threads of the bolts are located on the outer wall of the bolts, customers are worried that the threads may be damaged due to bumps and the like, so they usually check the threads of the bolts when purchasing (since the threads of the nuts are located on the inner ring of the nuts, they are generally not damaged). Nowadays, in order to ensure that the protective mesh (hereinafter referred to as the "mesh") protects the bolts, the mesh is usually fixed to the bolts relatively firmly by means such as bonding, and the bonding method can also make it easier to remove the mesh, thus achieving a balance between protecting the bolts and facilitating inspection. However, the bonding method has the disadvantage of being one-time, and after removing the mesh, the mesh that has lost bonding will easily fall off even if it is put on the bolt again, and therefore, it is impossible to provide more stable protection for the bolts.

[0006] In summary, necessary improvements need to be made to solve the above technical problems. Summary of the invention

[0007] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a nut kit that is anti-loosening and anti-disassembly and a packaging method for the nut kit, aiming to solve the problems arising from the above-mentioned background technology.

[0008] The technical solution of the present invention is implemented as follows: a nut kit for preventing loosening and disassembly, characterized in that it is composed of a bolt, a nut and a protective structure, wherein the protective structure includes:

[0009] A protection body having a protection cavity for accommodating bolts and nuts and having two ends passing through the protection cavity;

[0010] A guide piece is detachably disposed in the protection cavity and comprises at least a guide cavity and an air induction cavity, wherein the guide cavity is used to guide the anti-theft piece into the anti-theft groove of the nut, and the air induction cavity can introduce airflow to blow toward the inner wall of the nut;

[0011] An elastic support member is disposed at one end of the protection cavity and has a central cavity for the stud of the bolt to pass through and penetrate the elastic support member;

[0012] An elastic end-sealing member is provided at the other end of the protection cavity and is detachably connected to the protection body;

[0013] Wherein, the elastic end-sealing member, the guide member, the nut, the bolt and the elastic support member are distributed along the axial direction of the protection body, and the elastic support member and the elastic end-sealing member respectively have a first elastic body and a second elastic body;

[0014] When the elastic end-sealing member is under pressure, the second elastic body supplies air to the inner wall of the nut through the air inlet cavity and cleans the nut, and causes the guide member to be inserted into the nut and abut against the bolt, and then the output end of the guide cavity causes the anti-theft member to enter the anti-theft groove;

[0015] When the elastic support member is compressed, the stud of the bolt is exposed from the cavity opening of the protection cavity. When the elastic support member is restored, the stud of the bolt is retracted into the protection cavity and is wrapped by the first elastic body.

[0016] Preferably, the elastic support member comprises:

[0017] A first annular block is connected to the protection body and is located at the cavity opening of the protection cavity, and the first annular block has an outlet of the central cavity;

[0018] A second annular block is spaced apart from the first annular block and is located in the protection cavity, wherein the second annular block has an entrance to the central cavity;

[0019] A first folding body, connected between the first annular block and the second annular block, and having a first folding cavity capable of generating deformation;

[0020] A first return spring is disposed in the first folding cavity, and two ends of the first return spring are respectively against the first annular block and the second annular block;

[0021] The first folded body forms the central cavity, and a collecting area is formed between the first folded body and the protective cavity.

[0022] Preferably, the first annular block is provided with an exhaust one-way valve communicating with the first folding chamber and an air return one-way valve communicating with the first folding chamber.

[0023] Preferably, the elastic end-sealing member comprises:

[0024] A positioning annular block is detachably connected to one end of the protection cavity away from the elastic support member and has an exhaust port adapted to the air bleed cavity;

[0025] The extrusion block is spaced apart from the positioning annular block;

[0026] A second folding body is connected between the positioning annular block and the extrusion block and has a second folding cavity communicated with the exhaust port;

[0027] A plurality of positioning posts, one end of which is connected to the extrusion block and the other end of which is extended to the positioning annular block, and a positioning opening for the positioning posts to pass through is provided on the positioning annular block, and each positioning post is equidistantly distributed around the exhaust port;

[0028] A second return spring is connected between the positioning annular block and the extrusion block and is coaxially arranged with the positioning column;

[0029] Wherein, a plurality of air inlet holes connected with the second folding cavity are distributed on the extrusion block.

[0030] Preferably, the guide member comprises:

[0031] An inner tube having the air inlet cavity and one end thereof being adapted to the exhaust port;

[0032] A bleed air check valve is installed in the bleed air cavity;

[0033] The outer tube is coaxially arranged with the inner tube and forms the guide cavity between the outer tube and the inner tube;

[0034] Wherein, one end of the inner tube is formed with a plug structure capable of inserting a nut.

[0035] Preferably, the plug body structure comprises:

[0036] The plug sleeve is integrally formed on the inner tube, and the cross-sectional diameter gradually decreases in the axial direction;

[0037] An annular flange, arranged on the top end surface of the plug sleeve;

[0038] The limiting flange is integrally formed at one end of the outer tube and is staggered with the annular flange;

[0039] Wherein, the annular rib and the limit rib are respectively provided with feeding ports which can be mutually displaced or connected, and a third return spring is connected between the annular rib and the outer tube;

[0040] An annular force-bearing portion is integrally formed on the outer wall of the outer tube. When the positioning column passes through the positioning port and abuts against the annular force-bearing portion, the outer tube and the inner tube can move axially relative to each other and the feed ports can be connected to each other.

[0041] Preferably, an axially extending positioning groove is provided on the inner wall of the protection cavity, and a positioning rib capable of moving in the positioning groove is provided on the annular force-bearing portion;

[0042] Wherein, a card interface is provided on the inner wall of the protection cavity, and a card connection portion adapted to the card interface is provided on the positioning annular block.

[0043] Preferably, a filter cap is formed at one end of the inner tube away from the plug sleeve, a filter cavity communicated with the air inlet cavity is formed inside the filter cap, and a filter hole communicated with the filter cavity is formed on the outer wall of the filter cap.

[0044] In addition, the present invention also provides a method for packaging a nut kit, which is suitable for packaging the above-mentioned anti-loosening and anti-removal nut kit, and is characterized in that it includes the following steps:

[0045] S1: prepare a protective body with an elastic support member, and place the bolt, nut and guide member into the protective cavity in sequence;

[0046] S2: Take at least one anti-theft steel ball and put it into the guide cavity of the guide body;

[0047] S3: Align the elastic end-sealing piece with the other end of the protection body, and install the positioning annular block of the elastic end-sealing piece on the protection body through the clamping part;

[0048] Among them, in step S3, the positioning annular block is positioned through the exhaust port and the inner tube of the guide, and after the elastic end sealing member is installed, the extrusion block is pressed to cause the anti-theft steel ball in the guide member to enter the anti-theft groove of the nut. At the same time, the bolt squeezes the elastic support member and exposes the stud from one end of the protective body to complete the packaging, and the stud is inspected.

[0049] Preferably, in step S3, when the extrusion block of the elastic end-sealing member is pressed, the air inlet hole is covered by the pressing device, and the gas in the second folding cavity is first squeezed into the air inlet cavity, and the nut is cleaned, and then the extrusion block contacts the guide member and causes the plug sleeve to be inserted into the nut;

[0050] In step S3, when the elastic support member is squeezed, the gas in the first folding cavity is ejected, and the stud gradually exposed from the central cavity is cleaned;

[0051] In step S3, when the pressing block loses its pressing force, the first folding body and the second folding body are reset; when the first folding body is reset, the return air check valve draws air and guides impurities on the surface of the bolt into the collection area; when the second folding body is reset, the positioning column is reset, the limit stop edge rises and causes the discharge ports to be re-displaced.

[0052] The present invention has at least the following beneficial effects:

[0053] 1. The nut kit provided by the present invention comprises three parts: a nut (an anti-loosening and anti-removal nut, the same below), a bolt matched with the nut, and a protective structure for protecting the nut and the bolt from being damaged. Therefore, the matched nuts and bolts can be packaged together, so that after the nuts and bolts are produced, they no longer need to enter a separate packaging process (such as: nut filling with steel balls, bolt netting) respectively. When the nuts and bolts are packaged, the present invention can simultaneously clean the nuts and bolts, so that the three processes of nut cleaning, bolt cleaning and packaging are carried out simultaneously. During this period, at least four packaging processes such as nut cleaning, bolt cleaning, nut filling with steel balls and bolt netting are omitted, thereby optimizing the packaging process and increasing the output of the enterprise.

[0054] 2. After packaging, the present invention utilizes elastic support members and an external protective body to protect the bolts to prevent the outer thread of the bolts from being worn. At the same time, during sales inspection, there is no need to unpack, and the studs of the bolts can be exposed by squeezing the elastic support body, thereby facilitating inspection by the purchaser or customer; and after the inspection, the studs will retract into the protective body again, without affecting the continued protection of the studs.

[0055] 3. During packaging, the present invention utilizes elastic support members and elastic end sealing members to clean the bolts and nuts respectively, that is, during packaging, the first folded body of the elastic support member (i.e., the first elastic body of the present invention) and the second folded body of the elastic end sealing member (i.e., the second elastic body of the present invention) are squeezed, so that the gas generated by the squeezing of the two is ejected to clean the bolts and nuts, and the cleaning process is carried out simultaneously with the end sealing and steel ball filling, saving time.

[0056] 4. When the present invention is packaged, when the first folding body is reset, the impurities cleaned from the nut can be sucked into the collection area, so that during handling or transportation, the impurities are prevented from returning to the nut due to the overturning of the kit of the present invention.

[0057] In addition, other advantages of the present invention will be demonstrated in the embodiments of the present invention, thereby making the beneficial effects of the present invention more significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0059] Figure 1 It is a structural schematic diagram of a specific embodiment 1 of the present invention;

[0060] Figure 2 It is an exploded view of a specific embodiment 1 of the present invention;

[0061] Figure 3 for Figure 1 AA section view in;

[0062] Figure 4 It is a schematic structural diagram of an elastic support member in a specific embodiment 1 of the present invention;

[0063] Figure 5 for Figure 3 A magnified view of part A in FIG.

[0064] Figure 6 It is a schematic structural diagram of the elastic end-sealing member in the specific embodiment 1 of the present invention;

[0065] Figure 7 for Figure 3 A magnified view of part B;

[0066] Figure 8 It is a structural schematic diagram of a guide member in a specific embodiment 1 of the present invention;

[0067] Fig. 9 for Figure 3 The enlarged view of the C part in FIG.

[0068] Fig.10 It is a structural schematic diagram of specific embodiment 2 of the present invention;

[0069] Fig.11 It is a structural schematic diagram of a compacting machine in a specific embodiment 2 of the present invention;

[0070] Fig.12 It is a structural schematic diagram of the upper template in specific embodiment 2 of the present invention;

[0071] Fig.13 It is a cross-sectional schematic diagram of the transmission block in the specific embodiment 2 of the present invention. DETAILED DESCRIPTION

[0072] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0073] Embodiment 1, as Figure 1-Figure 9 As shown:

[0074] The present embodiment discloses a nut kit that prevents loosening and disassembly, which is composed of a bolt 10, a nut 11 and a protective structure 2, wherein an anti-theft groove 110 is provided on the inner ring wall of the nut 11.

[0075] In this embodiment, the protective structure as a whole can be made of plastic material (some of its accessories can be obtained by means of the prior art). The protective structure 2 of this embodiment includes:

[0076] The protection body 20 has a protection cavity 21 for accommodating the bolt 10 and the nut 11 and having two ends passing through the protection cavity 21;

[0077] The guide member 22 is detachably disposed in the protection cavity 21 and has at least a guide cavity and an air induction cavity. The guide cavity is used to guide the anti-theft member into the anti-theft groove 110 of the nut 11, and the air induction cavity can introduce airflow to blow toward the inner wall of the nut 11;

[0078] The elastic support member 23 is disposed at one end of the protection cavity 21 and has a central cavity 230 for the stud of the bolt 11 to pass through and penetrate the elastic support member 23;

[0079] The elastic end-sealing member 24 is disposed at the other end of the protection cavity 21 and is detachably connected to the protection body 20;

[0080] The elastic end-sealing member 24, the guide member 22, the nut 11, the bolt 10 and the elastic support member 23 are distributed along the axial direction of the protection body 20, and the elastic support member 23 and the elastic end-sealing member 24 respectively have a first elastic body and a second elastic body;

[0081] When the elastic end-sealing member 24 is pressurized, the second elastic body supplies air to the inner wall of the nut 11 through the air-inducing cavity and cleans the nut 11, and causes the guide member to be inserted into the nut 11 and abut against the bolt 10, and then the output end of the guide cavity causes the anti-theft member to enter the anti-theft groove 110;

[0082] When the elastic support member 23 is compressed, the stud 100 of the bolt 10 is exposed from the cavity opening of the protection cavity 21 . When the elastic support member 23 is restored, the stud 100 of the bolt 10 is retracted into the protection cavity 21 and is wrapped by the first elastomer.

[0083] refer to Figure 3-Figure 5 In this embodiment: the elastic support member 23 includes:

[0084] A first annular block 231 is connected to the protection body 20 by threads and is located at the cavity opening of the protection cavity 21. The first annular block 231 has an outlet 230a of the central cavity 230;

[0085] The second annular block 232 is spaced apart from the first annular block 231 and is located in the protection cavity 21 . The second annular block 232 has an entrance 230 b of the central cavity 230 .

[0086] The first folded body 233 (the first elastic body of this embodiment) is connected between the first annular block 231 and the second annular block 232 and has a first folded cavity 233a capable of generating deformation. The first folded body 233 may be made of rubber;

[0087] The first return spring 234 is disposed in the first folding cavity 233a, and its two ends are respectively against the first annular block 231 and the second annular block 232;

[0088] Among them, the first folded body 233 forms the central cavity 230, and a collection area 233c is formed between the first folded body 233 and the protective cavity 21. When the elastic support 23 is installed, cotton 233d for filtering is placed on the first annular block 231. Generally, a first sealing ring 231a is provided on the first annular block 231, and a notch 232a connected to the collection area 233c is provided on the second annular block.

[0089] refer to Figure 4 and Figure 5 In this embodiment, the first annular block 231 is provided with an exhaust check valve 40 communicating with the first folding chamber 233a and a return check valve 41 communicating with the first folding chamber 233a.

[0090] refer to Figure 3 , Figure 6-Figure 7 : The elastic end sealing member 24 comprises:

[0091] A positioning annular block 240 is detachably connected to one end of the protection cavity 21 away from the elastic support member 23 and has an exhaust port 240a adapted to the air bleed cavity;

[0092] The extrusion block 241 is spaced apart from the positioning annular block 240;

[0093] The second folding body 242 (the second elastic body of this embodiment) is connected between the positioning annular block 240 and the extrusion block 241 and has a second folding cavity 242a communicating with the exhaust port 240a;

[0094] A plurality of positioning posts 243, one end of which is connected to the extrusion block 241 and the other end of which is extended to the positioning ring block 240, and a positioning hole 243a for the positioning posts 243 to pass through is provided on the positioning ring block 240, and each positioning post 243 is equidistantly distributed around the exhaust port 240a;

[0095] The second return spring 244 is connected between the positioning annular block 240 and the extrusion block 243 and is coaxially arranged with the positioning column 243;

[0096] Among them, a plurality of air inlet holes 241 b are distributed on the extrusion block 241 and communicated with the second folding cavity 242 a.

[0097] refer to Figure 3 , Figure 8-Figure 9 In this embodiment: the guide member 22 includes:

[0098] The inner tube 220 has the air inlet cavity 220a, and one end is adapted to the exhaust port. In this embodiment, the outer wall of the inner tube 220 is further provided with a second sealing ring 220c. A telescopic tube head 220d is provided on the top of the inner tube of this embodiment. An air inlet hole 220b is provided on the outer wall of the tube head 220d. A spring 220e is connected between the tube head 220d and the inner tube 220.

[0099] The air inlet check valve 221 is installed in the air inlet cavity 220a;

[0100] The outer tube 222 is coaxially arranged with the inner tube 220 and forms the guide cavity 222a with the inner tube 220. The guide cavity 222a of this embodiment is divided into two by a partition plate 222b, and the two respectively correspond to the anti-theft grooves 110 of the nuts 11.

[0101] One end of the inner tube 220 is formed with a plug structure into which the nut 11 can be inserted.

[0102] In this embodiment: the plug body structure includes:

[0103] The plug sleeve 50 is integrally formed on the inner tube 220, and the cross-sectional diameter gradually decreases in the axial direction. The outer wall of the plug sleeve 50 is provided with an air injection port 500;

[0104] An annular flange 51 is provided on the top end surface of the plug sleeve 50;

[0105] The limiting flange 52 is integrally formed at one end of the outer tube 222 and is staggered with the annular flange 51;

[0106] The annular rib 51 and the limiting rib 52 are respectively provided with a feed opening 53 which can be mutually displaced or connected, and a third return spring 54 is connected between the annular rib 51 and the outer tube 222;

[0107] An annular force-bearing portion 60 is integrally formed on the outer wall of the outer tube 222. When the positioning column 243 passes through the positioning port 243a and abuts against the annular force-bearing portion 60, the outer tube 222 and the inner tube 220 can move axially relative to each other and connect the discharge port 53. The bottom of the guide cavity 222a is inclined toward the discharge port 53 so that the anti-theft steel ball can roll to the discharge port 53.

[0108] In this embodiment: an axially extending positioning groove 210 is provided on the inner wall of the protection cavity 21, and a positioning rib 610 capable of moving in the positioning groove 210 is provided on the annular force-bearing portion 60;

[0109] A card interface 21 a is provided on the inner wall of the protection cavity 21 , and a card connection portion 21 b adapted to the card interface 21 a is provided on the positioning annular block 240 .

[0110] In this embodiment, in order to facilitate the cleaning of the nut and prevent the nut and the bolt from being impacted and damaged, a rubber head 110a is provided on the nut. The rubber head 110a can create a gap between the nut and the bolt during assembly to facilitate the discharge of impurities on the nut. At the same time, when placing the nut, the impact caused by the nut falling down and resulting in wear on the surface of the bolt or nut can be avoided.

[0111] This embodiment provides a packaging method for a nut kit, comprising the following steps:

[0112] S1: Prepare a protective body with an elastic support, and put the bolt, nut and guide into the protective cavity in sequence, first put the bolt, insert the stud of the bolt into the central cavity, then put the nut, and then put the guide into the protective body;

[0113] S2: Take two anti-theft steel balls (the nut of this embodiment has two anti-theft grooves), and put the anti-theft steel columns into each guide cavity of the guide body respectively;

[0114] S3: Align the elastic end-sealing piece with the other end of the protection body, and install the positioning annular block of the elastic end-sealing piece on the protection body through the clamping part;

[0115] Among them, in step S3, the positioning annular block is positioned through the exhaust port and the inner tube of the guide, and after the elastic end sealing member is installed, the inner tube is inserted into the second folding cavity, pressing the extrusion block to cause the anti-theft steel ball in the guide to enter the anti-theft groove of the nut. At the same time, the bolt squeezes the elastic support member and exposes the stud from one end of the protective body to complete the packaging, and the stud is inspected.

[0116] In this embodiment: in step S3, when the extrusion block of the elastic end-sealing member is pressed, the air inlet hole is covered by the pressing device, and the gas in the second folding cavity is first squeezed into the air inlet cavity, and the nut is cleaned, and then the extrusion block contacts the guide member and causes the plug sleeve to be clamped into the nut;

[0117] In step S3, when the elastic support member is squeezed, the gas in the first folding cavity is ejected, and the stud gradually exposed from the central cavity is cleaned;

[0118] In step S3, when the pressing block loses its pressing force, the first folding body and the second folding body are reset; when the first folding body is reset, the return air check valve draws air and guides impurities on the surface of the bolt into the collection area; when the second folding body is reset, the positioning column is reset, the limit stop edge rises and causes each unloading port to be re-displaced.

[0119] refer to Figure 1-Figure 9 The principles and advantages of this embodiment are:

[0120] 1. The inner wall of the nut can be cleaned during assembly That is, during assembly, the elastic support member is first installed on the protection body, then the bolts and nuts are sequentially placed into the protection cavity, and then the positioning ribs and positioning grooves of the annular force-bearing part are matched and placed into the guide member into the protection cavity, and finally, the elastic end-sealing member is installed at the cavity opening of the protection cavity to complete the assembly;

[0121] After the initial assembly is completed, press the extrusion block (wear labor protection gloves when pressing manually). When pressing, the air inlet hole on the extrusion block is closed, and the gas in the second folding cavity is squeezed out. The gas in the second folding cavity enters the plug sleeve through the air inlet cavity of the inner tube and is ejected from the air jet on the plug sleeve to clean the inner ring wall of the nut;

[0122] When the pressing block contacts the tube head on the inner tube in the second folding cavity, the inner tube is lowered as a whole, and the plug sleeve is inserted into the nut until the feed opening is aligned with the anti-theft groove of the nut. Then, the extrusion block continues to descend, and the positioning column is abutted against the annular force-bearing part to drive the outer tube down (the tube head is also squeezed synchronously), so that the feed openings on the annular rib and the limit rib are aligned with each other, so that the anti-theft steel ball enters the anti-theft groove through the feed opening;

[0123] When the pressing block continues to be pressed, the tube head moves to the extreme position, and the bolt is driven down by the guide member, and the first folded body is squeezed, so that the bolt is gradually exposed from the central cavity (that is, one end of the protective cavity). In this process, the gas in the first folded cavity is squeezed out, and the stud part of the bolt is cleaned. When the stud of the bolt is exposed, it can be inspected. After the inspection is completed, the pressing block is released.

[0124] 2. After the assembly is completed, the impurities in the protective cavity can be guided to the gathering area when the first folding body is reset: that is, when the first folding body is reset, the gas in the gathering area is sucked into the first folding cavity by using the return air one-way valve. At this time, the impurities on the second annular block (the impurities cleaned from the nut) are sucked into the gathering area from the notch and adsorbed on the cotton (which plays the role of filtering impurities and can also be replaced by a filter structure in other embodiments. Compared with the filter, cotton has the advantage of making impurities "stick" to the cotton. This prevents impurities from returning to the nut when the nut kit is transported or carried.

[0125] In summary, the protective structure of this embodiment can provide all-round protection for nuts and bolts, and can clean the nuts and bolts during assembly, and can also facilitate inspection of the studs of the bolts during sales.

[0126] It is worth mentioning that: in order to reduce the production pressure of enterprises, the production of protective structures can be handed over to other processing enterprises, and the manufacturers of bolts and nuts are responsible for purchasing protective structures. This not only solves the high production pressure of enterprises, but also drives the development of upstream enterprises. The processing enterprises of protective structures can recycle the protective structures to realize resource reuse.

[0127] Embodiment 2 is different from Embodiment 1 in that:

[0128] like Figure 10-13 As shown, in this embodiment: a filter cap 70 is formed at one end of the tube head 220d of the inner tube away from the plug sleeve 50, a filter cavity connected to the air inlet cavity 220a is formed in the filter cap 70, and a filter hole connected to the filter cavity is formed on the outer wall of the filter cap 70. The filter cap 70 of this embodiment is a filter net wrapped around the outer wall of the tube head 220d to filter the gas entering the air inlet cavity from the second folded cavity.

[0129] In this embodiment, a driven shaft 80 is rotatably connected to the tube head 220 d , and the driven shaft 80 passes through the extrusion plate 241 and forms a driven groove 81 .

[0130] In this embodiment, the annular force-bearing portion 60 eliminates the positioning ribs, and the positioning grooves on the inner wall of the protective cavity are also eliminated; the extrusion block of this embodiment eliminates the air inlet hole, and replaces it with a one-way air inlet valve 85 provided on the second folded body 242.

[0131] In this embodiment, the entrance 230b of the second annular block 232 is rotatably connected to a rotating disk 83, an annular slide rail 830 is provided at the bottom of the rotating disk 83, and an annular slide groove adapted to the annular slide rail is provided on the second annular block 232. The rotating disk 83 rotates at the entrance 230b position with the help of the annular slide rail. Similarly, an opening for the bolt to pass through is coaxially provided on the rotating disk 83.

[0132] like Figure 11-13 As shown, this embodiment also provides a compacting machine, which can drive the anti-theft steel ball into the anti-theft groove and clean the nuts and bolts at the same time, and it is composed of a machine base 90 and a machine cover 92 connected to the machine base 90 through a support 91. Among them, the machine base 90 is rotatably connected with a screw rod 94 controlled by a first motor 93, and the screw rod 94 is matched with a screw rod seat 95, and an upper mold plate 96 is arranged between the screw rod seats 95. The machine base 90 is provided with a lower mold barrel 97, and the lower mold barrel 97 is installed with a fastening bolt 970. When in use, the protective body can be placed in the lower mold barrel 97 and can be fixed by the fastening bolt 970.

[0133] In this embodiment, the upper template 96 is composed of a main plate 960 and a sub-plate 961. The main plate 960 is rotatably connected to a transmission block 962 that is adapted to the driven groove 81. The transmission block 962 is driven by the second motor 963 to rotate clockwise or counterclockwise. The main plate 960 is also provided with two lifting push rods 964 (such as electric push rods, cylinders), and the lifting push rods 964 can control the lifting and lowering activities of the sub-plate 961.

[0134] In this embodiment, the transmission block 962 and the side walls of the driven groove 81 are provided with mutually matching clamping ribs 962a and clamping grooves (not shown in the figure).

[0135] refer to Figure 10-13 , the principle of this embodiment is:

[0136] During packaging, the initially packaged nut kit is placed in the lower mold barrel and fixed (when fixed, a certain distance is maintained between the bottom of the nut kit and the bottom of the lower mold barrel), and then the first motor is used to control the upper mold plate to descend, and the transmission block is matched with the driven groove. Then, driven by the second motor, the guide part in the protective body can be controlled to rotate, and at the same time, the lifting push rod reciprocates to control the extrusion block to extrude and squeeze the gas out of the air duct cavity. At the same time, the guide part is controlled to rotate, which can improve the cleaning effect of the nut.

[0137] After the nut is cleaned, the extrusion block is controlled to continue to descend, and the annular force-bearing part is driven to descend through the positioning column to open the feed port, so that the anti-theft steel ball enters the anti-theft groove, and then the sub-plate rises and separates from the extrusion block.

[0138] When the guide member abuts against the bolt, the first motor and the second motor are started, and the upper template is used to drive the guide member to descend and at the same time drive the guide member to rotate. Therefore, when the guide member abuts against the bolt and drives the bolt to leave from the outlet of the central cavity, the guide member controlled to rotate will drive the bolt to rotate. When the bolt rotates, impurities on the bolt head leave the bolt head due to centrifugal force, making it easier for the impurities to enter the collection area, and the bolt in the rotating state can also be better cleaned by the gas ejected from the first folding cavity.

[0139] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A nut kit for preventing loosening and disassembly, characterized in that: The invention is composed of a bolt (10), a nut (11) and a protective structure (2), wherein the protective structure (2) comprises: A protection body (20) having a protection cavity (21) for accommodating the bolt (10) and the nut (11) and having two ends passing through the protection cavity; A guide member (22) is detachably disposed in the protection cavity (21) and comprises at least a guide cavity and an air induction cavity, wherein the guide cavity is used to guide the anti-theft member into the anti-theft groove (110) of the nut (11), and the air induction cavity can introduce airflow to blow toward the inner wall of the nut (11); An elastic support member (23) is disposed at one end of the protection cavity (21) and has a central cavity (230) for the stud of the bolt (11) to pass through and penetrates the elastic support member (23); An elastic end-sealing member (24) is disposed at the other end of the protection cavity (21) and is detachably connected to the protection body (20); The elastic end-sealing member (24), the guide member (22), the nut (11), the bolt (10) and the elastic support member (23) are distributed along the axial direction of the protective body (20), and the elastic support member (23) and the elastic end-sealing member (24) respectively have a first elastic body and a second elastic body; When the elastic end-sealing member (24) is pressurized, the second elastic body supplies air to the inner wall of the nut (11) through the air inlet cavity and cleans the nut (11), and causes the guide member to be inserted into the nut (11) and abut against the bolt (10), and then the output end of the guide cavity causes the anti-theft member to enter the anti-theft groove (110); When the elastic support member (23) is compressed, the stud (100) of the bolt (10) is exposed from the cavity opening of the protective cavity (21); when the elastic support member (23) is restored, the stud (100) of the bolt (10) is retracted into the protective cavity (21) and is wrapped by the first elastic body.

2. The anti-loosening and anti-removal nut kit according to claim 1, characterized in that: The elastic support member (23) comprises: A first annular block (231), connected to the protection body (20) and located at the cavity opening of the protection cavity (21), wherein the first annular block (231) has an outlet (230a) of the central cavity (230); A second annular block (232) is spaced apart from the first annular block (231) and is located in the protection cavity (21); the second annular block (232) has an entrance (230b) of the central cavity (230); A first folding body (233) connected between the first annular block (231) and the second annular block (232), and having a first folding cavity (233a) capable of generating deformation; A first return spring (234) is disposed in the first folding cavity (233a), and two ends thereof are respectively against the first annular block (231) and the second annular block (232); The first folded body (233) forms the central cavity (230), and a collecting area (233c) is formed between the first folded body (233) and the protective cavity (21).

3. The anti-loosening and anti-disassembly nut kit according to claim 2, characterized in that: The first annular block (231) is provided with an exhaust check valve (40) communicating with the first folding chamber (233a) and an air return check valve (41) communicating with the first folding chamber (233a).

4. The anti-loosening and anti-disassembly nut kit according to claim 2 or 3, characterized in that: The elastic end-sealing member (24) comprises: A positioning annular block (240) is detachably connected to one end of the protection cavity (21) away from the elastic support member (23), and has an exhaust port (240a) adapted to the air bleed cavity; The extrusion block (241) is spaced apart from the positioning annular block (240); A second folding body (242) is connected between the positioning annular block (240) and the extrusion block (241), and has a second folding chamber (242a) communicating with the exhaust port (240a); A plurality of positioning posts (243) are connected to the extrusion block (241) at one end and extend toward the positioning annular block (240) at the other end, and a positioning opening (243a) is provided on the positioning annular block (240) for the positioning posts (243) to pass through, and the positioning posts (243) are equidistantly distributed in the circumferential direction with the exhaust port (240a) as the center; A second return spring (244) is connected between the positioning annular block (240) and the extrusion block (243), and is coaxially arranged with the positioning column (243); Wherein, a plurality of air inlet holes (241b) communicating with the second folding cavity (242a) are distributed on the extrusion block (241).

5. The anti-loosening and anti-disassembly nut kit according to claim 4, characterized in that: The guide member (22) comprises: An inner tube (220) having the air inlet cavity (220a) and one end of which is adapted to the exhaust port; An air inlet check valve (221) is installed in the air inlet cavity; The outer tube (222) is coaxially arranged with the inner tube (220) and forms the guide cavity (222a) between the outer tube (222) and the inner tube (220); One end of the inner tube (220) is formed with a plug structure capable of inserting a nut (11).

6. The anti-loosening and anti-disassembly nut kit according to claim 5, characterized in that: The plug body structure comprises: A plug sleeve (50) is integrally formed on the inner tube (220), and its cross-sectional diameter gradually decreases in the axial direction; An annular rib (51) is provided on the top end surface of the plug sleeve (50); A limiting rib (52) is integrally formed at one end of the outer tube (222) and is staggered with the annular rib (51); The annular rib (51) and the limiting rib (52) are respectively provided with a feed opening (53) that can be mutually displaced or connected, and a third return spring (54) is connected between the annular rib (51) and the outer tube (222); An annular force-bearing portion (60) is integrally formed on the outer wall of the outer tube (222); when the positioning column (243) passes through the positioning opening (243a) and abuts against the annular force-bearing portion (60), the outer tube (222) and the inner tube (220) can be caused to move axially relative to each other and the feed openings (53) can be connected to each other.

7. The anti-loosening and anti-removal nut kit according to claim 6, characterized in that: An axially extending positioning groove (210) is provided on the inner wall of the protection cavity (21), and a positioning rib (610) movable in the positioning groove (210) is provided on the annular force-bearing portion (60); Wherein, a card interface (21a) is provided on the inner wall of the protection cavity (21), and a card connection portion (21b) adapted to the card interface (21a) is provided on the positioning annular block (240).

8. The anti-loosening and anti-disassembly nut kit according to claim 6 or 7, characterized in that: A filter cap (70) is formed at one end of the inner tube away from the plug sleeve (50), a filter cavity in communication with the air induction cavity (222a) is formed in the filter cap (70), and a filter hole in communication with the filter cavity is formed on the outer wall of the filter cap (70).

9. A method for packaging a nut kit, which is suitable for packaging a nut kit for preventing loosening and removal as claimed in any one of claims 5 to 7, characterized in that: The steps include: S1: prepare a protective body with an elastic support member, and place the bolt, nut and guide member into the protective cavity in sequence; S2: Take at least one anti-theft steel ball and put it into the guide cavity of the guide body; S3: Align the elastic end-sealing piece with the other end of the protection body, and install the positioning annular block of the elastic end-sealing piece on the protection body through the clamping part; Among them, in step S3, the positioning annular block is positioned through the exhaust port and the inner tube of the guide, and after the elastic end sealing member is installed, the extrusion block is pressed to cause the anti-theft steel ball in the guide member to enter the anti-theft groove of the nut. At the same time, the bolt squeezes the elastic support member and exposes the stud from one end of the protective body to complete the packaging, and the stud is inspected.

10. A packaging method according to claim 9, characterized in that: In step S3, when the extrusion block of the elastic end-sealing member is pressed, the air inlet hole is covered by the pressing device, and the gas in the second folding cavity is first squeezed into the air inlet cavity, and the nut is cleaned, and then the extrusion block contacts the guide member and causes the plug sleeve to be inserted into the nut; In step S3, when the elastic support member is squeezed, the gas in the first folding cavity is ejected, and the stud gradually exposed from the central cavity is cleaned; In step S3, when the pressing block loses its pressing force, the first folding body and the second folding body are reset; when the first folding body is reset, the return air check valve draws air and guides impurities on the surface of the bolt into the collection area; when the second folding body is reset, the positioning column is reset, the limit stop edge rises and causes the discharge ports to be misaligned.

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