A semi-automated tool for installing a steel wire insert

Abstract

The utility model discloses a kind of semi-automated tools of installing steel wire sleeve, including shell, guide rod, hexagon nut, stop screw, upper bushing, needle roller bearing and lower bushing, guide rod is installed in shell, external thread is attacked in guide rod upper half, lower end is provided with the slot for installing steel wire sleeve, hexagon nut is connected with the external thread of guide rod upper half, by the counter-twist fixed of two hexagon nuts, to adjust the installation depth of steel wire sleeve, upper bushing is installed in shell top, needle roller bearing is fixed in shell middle portion by stop screw, lower bushing is installed in shell bottom, for fixed guide rod, reduce the change of concentricity in guide rod movement process;The utility model has the advantages of: high installation efficiency, improve product quality, reduce production cost.

Description

Technical Field

[0001] This utility model belongs to the field of installation tool technology, specifically, it relates to a semi-automatic tool for installing wire thread inserts. Background Technology

[0002] Wire thread inserts, also known as threaded bushings or wire threaded sleeves, are metal fastening components used to reinforce or repair internal threads. They are typically made of high-strength stainless steel wire, high-temperature alloy wire, or similar materials, and are spiral coil structures with threads on both the inner and outer sides. By embedding the wire thread insert into the threaded hole of the base material using specialized tools, the load is distributed to a stronger material, solving the problems of easy damage and insufficient strength of threads in soft materials. They also offer advantages such as repair, anti-loosening, and weather resistance. However, existing wire thread insert installation tools do not constrain the installation depth, requiring manual control. This can easily lead to excessive installation, causing unnecessary rework or even product scrap. Furthermore, the lack of tooth spacing during installation can easily cause skipped teeth, damaging the internal threads of the base material and resulting in product scrap. Utility Model Content

[0003] In view of the above-mentioned prior art, the purpose of this utility model is to overcome the shortcomings of the prior art, adapt to the needs of reality, and thus provide a semi-automatic tool for installing wire thread inserts, which can improve the installation quality of wire thread inserts, increase production efficiency, reduce the generation of defective products, and reduce production costs.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a semi-automatic tool for installing wire thread inserts, comprising a housing, a guide rod, hexagonal nuts, a locking screw, an upper bushing, a needle roller bearing, and a lower bushing. The housing is made of aluminum, with a slot for filling the wire thread insert in the lower half. The guide rod is a stepped shaft, installed inside the housing, with both its upper and lower ends protruding from the housing. The top of the guide rod has a clamping end for connection to an electric gun. The upper half of the guide rod is threaded externally, and two hexagonal nuts are provided, both connected to the external threads of the upper half of the guide rod and located at the upper end of the housing. By tightening the two hexagonal nuts together, the installation depth of the wire thread insert is adjusted. The bottom of the guide rod has a tool for fixing and driving the wire thread insert into place. The guide rod is mounted on the top of the housing with a groove. The upper bushing is used to fix the guide rod and reduce the change in coaxiality during the movement of the guide rod. The needle roller bearing is fixed to the middle of the housing by a locking screw to fix the guide rod and reduce the change in coaxiality during the movement of the guide rod, thereby improving the flexibility of the guide rod movement. The lower bushing is mounted on the bottom of the housing to fix the guide rod and reduce the change in coaxiality during the movement of the guide rod. The inner diameter of the lower bushing is provided with a thread that mates with the outer side of the wire thread insert. The thread on the inner diameter of the lower bushing is used to compress and stretch the tooth pitch of the wire thread insert, which facilitates the installation of the wire thread insert. The guide rod, upper bushing, and lower bushing are all made of steel. The locking screw, needle roller bearing, and hexagonal nut are all standard parts. The upper bushing, needle roller bearing, and lower bushing are all fitted onto the guide rod and are all located inside the housing.

[0005] Furthermore, the outer casing includes a handle and a guide tube. Both the handle and the guide tube are cylindrical structures and are perpendicular to each other. The handle is horizontal and the guide tube is vertical. The handle has a textured surface for anti-slip purposes. The guide tube has a stepped through hole in the middle for the guide rod to pass through. The stepped through hole includes hole one, hole two, hole three, hole four, and hole five. Holes one, two, three, four, and five are distributed from top to bottom and are coaxially arranged. The upper bushing is installed in hole one. The needle roller bearing is fixed in hole three by a locking screw and is located at the top of the groove. The lower bushing is installed in hole five. The groove is located in the lower half of the guide tube, and the upper and lower ends of the groove pass through the lower end of hole three and the upper end of hole four, respectively. The guide rod passes through the entire stepped through hole.

[0006] Furthermore, the upper end of the large diameter end of the guide rod stepped shaft is provided with an external thread that mates with a hexagonal nut. The clamping end is a rotating structure, located at the top of the guide rod with the external thread end. The groove is located at the bottom of the small diameter end of the guide rod stepped shaft. The wire thread sleeve is fitted onto the small diameter end of the guide rod stepped shaft, and the wire thread sleeve punch is fixed in the groove at the bottom of the guide rod.

[0007] Furthermore, the outer diameter of the large-diameter end of the guide rod stepped shaft matches the inner diameter of the upper bushing and the needle roller bearing.

[0008] Furthermore, the outer diameter of the small-diameter end of the guide rod stepped shaft is smaller than the inner diameter of the wire thread sleeve.

[0009] Furthermore, the outer diameter of the upper bushing is interference-fitted with hole one, the outer diameter of the lower bushing is interference-fitted with hole five, the outer diameter of the needle roller bearing is transition-fitted with hole three, and the inner diameter of the lower bushing is interference-fitted with the outer diameter of the wire thread sleeve.

[0010] Furthermore, the diameters of holes one, three, and five are all larger than those of holes two and four. The diameter of hole two is the same as that of hole four, and both match the outer diameter of the large diameter end of the guide rod stepped shaft. The height of hole three is greater than the thickness of the needle roller bearing, and the diameter of hole four is greater than the outer diameter of the wire thread sleeve.

[0011] Furthermore, the groove depth is equal to the radius of the guide tube, and the groove height is greater than the height of the wire thread sleeve.

[0012] This utility model comprises a housing (handle + guide tube), a guide rod, an upper bushing, a needle roller bearing, a lower bushing, a locking screw, and a hexagonal nut. The housing is made of aluminum, and the handle has a textured surface for anti-slip purposes. The lower half of the guide tube has a slot for filling the wire thread insert. The guide rod is made of steel and is installed inside the guide tube of the housing. The top of the guide rod has an end for clamping the electric gun, and the upper half of the guide rod is threaded to cooperate with the hexagonal nut for adjusting the installation depth of the wire thread insert. The bottom end of the guide rod has a groove for fixing and driving the installation of the wire thread insert. The upper bushing is made of steel and is installed on the top of the guide tube of the housing to fix the guide rod and reduce changes in coaxiality during the movement of the guide rod. The needle roller bearing, a standard component, is installed in the middle of the guide tube of the housing to fix the guide rod, reduce changes in coaxiality during its movement, and improve its flexibility. The lower bushing, made of steel, is installed at the bottom of the guide tube of the housing to fix the guide rod and reduce coaxiality changes during its movement. The lower bushing has a threaded inner diameter that mates with the outer side of the wire thread insert, used to compress and stretch the tooth pitch of the wire thread insert for easy installation. The locking screw, a standard component, is installed in the middle of the guide tube of the housing to fix the needle roller bearing, facilitating its installation and removal. The hexagonal nut, a standard component, is installed on the upper part of the guide rod and mates with its thread. Two hexagonal nuts are tightened together to adjust the installation depth of the wire thread insert. This semi-automatic tool for installing wire thread inserts is available in various specifications and is suitable for installing wire thread inserts of different sizes, offering high adaptability.

[0013] The beneficial effects of this utility model are as follows: 1. An electric gun can be used as a power source to speed up the installation efficiency of wire thread inserts; 2. Adjustable wire thread insert installation depth speeds up installation efficiency, reduces defective products, and improves product quality; 3. Stretch the wire thread insert tooth pitch to prevent the wire thread insert from skipping teeth during installation, which could damage the base thread, reduce scrap rate, and lower production costs. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 Schematic diagram of the structure for installing the wire thread insert in this utility model Figure 1 ; Figure 4 Schematic diagram of the structure for installing the wire thread insert in this utility model Figure 2 ; Figure 5 This is a schematic diagram of inserting a wire threaded rod into a mounting hole at a predetermined position according to the present invention; Figure 6 This is a cross-sectional view of the outer casing of this utility model.

[0015] Wherein: 1 is guide rod, 2 is hexagonal nut, 3 is outer shell, 4 is stop screw, 5 is upper bushing, 6 is needle roller bearing, 7 is lower bushing, 8 is handle, 9 is guide tube, 10 is slot, 11 is groove, 12 is clamping end, 13 is wire thread sleeve, 14 is hole one, 15 is hole two, 16 is hole three, 17 is hole four, and 18 is hole five. Detailed Implementation

[0016] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0017] In the description of this application, it should be noted that the terms "center / part", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0018] Furthermore, the terms “one,” “two,” “three,” “four,” and “five” are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "equipped with," "sleeve-in / connected," "click-fit," "pull-in," etc., should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0020] It should also be understood that the terms "comprising / including," "consisting of," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements includes not only those elements but may also include, where necessary, other elements not expressly listed, or elements inherent to such a product, apparatus, process, or method. Without further limitations, an element defined by the phrases "comprising / including," "consisting of," does not exclude the presence of additional identical elements in the product, apparatus, process, or method that includes said element.

[0021] like Figures 1 to 6 As shown, this utility model provides a semi-automatic tool for installing wire thread inserts, including a housing 3, a guide rod 1, a hexagonal nut 2, a locking screw 4, an upper bushing 5, a needle roller bearing 6, and a lower bushing 7. The housing 3 is made of aluminum, and the lower half of the housing 3 has a slot 10 for filling the wire thread insert 13. The guide rod 1 is a stepped steel shaft, installed inside the housing 3, with both the upper and lower ends of the guide rod 1 protruding from the upper and lower ends of the housing 3, respectively. The top of the guide rod 1 has a clamping end 12 for connecting to an electric gun. The upper half of the guide rod 1 is threaded externally. Two hexagonal nuts 2 are provided, both connected to the external threads of the upper half of the guide rod 1 and located at the upper end of the housing 3. By tightening the two hexagonal nuts 2 together, the installation depth of the wire thread insert 13 can be adjusted. The bottom of the guide rod 1 has a tool for fixing and driving the wire thread insert 13 during installation. The groove 11 and the upper bushing 5 are made of steel and are installed on the top of the outer shell 3 to fix the guide rod 1 and reduce the change in coaxiality of the guide rod 1 during movement. The needle roller bearing 6 is fixed to the middle of the outer shell 3 by the stop screw 4 to fix the guide rod 1, reduce the change in coaxiality of the guide rod 1 during movement, and improve the flexibility of the guide rod 1's movement. The lower bushing 7 is made of steel and is installed at the bottom of the outer shell 3 to fix the guide rod 1 and reduce the change in coaxiality of the guide rod 1 during movement. The inner diameter of the lower bushing 7 is provided with threads that mate with the outer side of the wire thread sleeve 13. The threads on the inner diameter of the lower bushing 7 are used to compress and stretch the tooth pitch of the wire thread sleeve 13, making it convenient for the wire thread sleeve 13 to be installed. The stop screw 4, the needle roller bearing 6, and the hexagonal nut 2 are all standard parts. The upper bushing 5, the needle roller bearing 6, and the lower bushing 7 are all fitted on the guide rod 1 and are all located inside the outer shell 3.

[0022] Preferably, the outer casing 3 includes a handle 8 and a guide cylinder 9. Both the handle 8 and the guide cylinder 9 are cylindrical structures and are arranged perpendicularly to each other. The handle 8 is arranged horizontally, and the guide cylinder 9 is arranged vertically. The handle 8 has a pattern on its outside to prevent slipping. The guide cylinder 9 has a stepped through hole in the middle for the guide rod 1 to pass through. The stepped through hole includes hole 14, hole 25, hole 36, hole 47 and hole 518. Holes 14, 25, 36, 47 and 518 are arranged in order from top to bottom and are coaxially arranged. The upper bushing 5 is installed in hole 14. The needle roller bearing 6 is fixed in hole 36 by a stop screw 4 and is located at the top of the slot 10. The lower bushing 7 is installed in hole 518. The slot 10 is located in the lower half of the guide cylinder 9, and the upper and lower ends of the slot 10 pass through the lower end of hole 316 and the upper end of hole 417, respectively. The guide rod 1 passes through the entire stepped through hole.

[0023] Preferably, the upper end of the large-diameter shaft of the guide rod 1 is provided with an external thread that mates with the hexagonal nut 2. The clamping end 12 is a rotating structure. The clamping end 12 is located at the top of the guide rod 1 with the external thread end. The groove 11 is located at the bottom of the small-diameter end of the guide rod 1. The wire thread sleeve 13 is sleeved on the small-diameter end of the guide rod 1, and the punch of the wire thread sleeve 13 is fixed in the groove 11 at the bottom of the guide rod 1.

[0024] Preferably, the outer diameter of the large-diameter end of the stepped shaft of the guide rod 1 matches the inner diameter of the upper bushing 5 and the needle roller bearing 6.

[0025] Preferably, the outer diameter of the small-diameter end of the stepped shaft of the guide rod 1 is smaller than the inner diameter of the wire thread sleeve 13.

[0026] Preferably, the outer diameter of the upper bushing 5 is interference-fitted with the first hole 14, the outer diameter of the lower bushing 7 is interference-fitted with the fifth hole 18, the outer diameter of the needle roller bearing 6 is transition-fitted with the third hole 16, and the inner diameter of the lower bushing 7 is interference-fitted with the outer diameter of the wire thread sleeve 13.

[0027] Preferably, the diameters of holes 14, 16, and 18 are all larger than the diameters of holes 25 and 17. The diameter of hole 215 is the same as that of hole 417, and both are matched with the outer diameter of the large diameter end of the stepped shaft of guide rod 1. The height of hole 316 is higher than the thickness of needle roller bearing 6, and the diameter of hole 417 is larger than the outer diameter of wire thread sleeve 13.

[0028] Preferably, the groove depth of the groove 10 is equal to the radius of the guide cylinder 9, the height of the groove 10 is greater than the height of the wire thread sleeve 13, and the diameter of the hole 3 16 is slightly larger than the diameter of the needle roller bearing 6.

[0029] Preferably, the groove 11 is a through groove.

[0030] In this utility model, both the guide rod 1 and the outer shell 3 are integrally formed structures.

[0031] In this utility model, the slot 10 is used to install the wire thread insert 13. When the guide rod 1 is raised, the wire thread insert 13 is inserted through the slot 10. When the guide rod 1 is lowered, the wire thread insert 13 is fitted onto the small diameter end of the guide rod 1. The punch of the wire thread insert 13 is fixed in the groove 11 at the bottom of the small diameter end of the guide rod 1. The tool is aligned with the bottom hole, and the guide rod 1 continues to rotate downward, driving the wire thread insert 13 through the lower bushing 7 and into the bottom hole.

[0032] The specific operating steps of this utility model are as follows: 1. Adjust the height of the hexagonal nut 2 at the guide rod 1 so that the distance from the bottom of the guide tube 9 of the outer shell 3 to the installation depth of the wire thread sleeve 13. Use a wrench to tighten the two hexagonal nuts 2 together to fix them. 2. Clamp and fix the clamping end 12 at the top of the guide rod 1 with an electric gun chuck; 3. Hold the handle 8 of the outer casing 3 and use the electric gun to rotate the guide rod 1 in the opposite direction; 4. Place the wire thread insert 13 to be installed at the groove 10 in the lower half of the guide tube 9 of the outer shell 3; 5. Using an electric gun, screw the guide rod 1 forward to fix the punch of the wire thread sleeve 13 into the groove 11 at the bottom of the guide rod 1; 6. Align the installation tool of this utility model with the hole to be installed, and use an electric gun to screw in the guide rod 1. The wire thread sleeve 13 is squeezed by the internal thread of the lower bushing 7, and the tooth pitch of the wire thread sleeve 13 is opened. With the downward pushing force of the guide rod 1, the wire thread sleeve 13 will cooperate with the internal thread of the installation hole and continue to be screwed into the hole. When the guide rod 1 is screwed into the set position, the hexagonal nut 2 fixed on the upper part of the guide rod 1 will be restricted by the displacement of the outer shell 3, and the guide rod 1 will no longer move downward. The wire thread sleeve 13 is then installed in the set position. 7. Use the electric gun to unscrew the guide rod 1 in the opposite direction, and then you can begin the installation of the next wire thread sleeve 13.

[0033] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A semi-automatic tool for installing wire thread inserts, characterized in that: The device includes a housing, a guide rod, a hexagonal nut, a locking screw, an upper bushing, a needle roller bearing, and a lower bushing. The lower half of the housing has a slot for filling the wire thread insert. The guide rod is a stepped shaft, installed inside the housing, with both its upper and lower ends protruding from the housing. The top of the guide rod has a clamping end for connecting to the electric gun. The upper half of the guide rod is threaded. Two hexagonal nuts are provided, both connected to the external threads of the upper half of the guide rod and located at the upper end of the housing. The installation depth of the wire thread insert is adjusted by tightening the two hexagonal nuts. The bottom of the guide rod has a groove for fixing and driving the installation of the wire thread insert. The upper bushing is installed on the top of the housing. The needle roller bearing is fixed to the middle of the housing by the locking screw. The lower bushing is installed on the bottom of the housing. The inner diameter of the lower bushing has threads that mate with the outer side of the wire thread insert. The threads on the inner diameter of the lower bushing are used to compress and stretch the tooth pitch of the wire thread insert. The upper bushing, needle roller bearing, and lower bushing are all fitted onto the guide rod and are all located inside the housing.

2. The semi-automatic tool for installing wire thread inserts according to claim 1, characterized in that: The outer casing includes a handle and a guide tube. Both the handle and the guide tube are cylindrical structures and are perpendicular to each other. The handle is horizontal and the guide tube is vertical. The handle has a textured surface for anti-slip purposes. The guide tube has a stepped through hole in the middle for the guide rod to pass through. The stepped through hole includes hole one, hole two, hole three, hole four and hole five, which are arranged from top to bottom and coaxially. The upper bushing is installed in hole one. The needle roller bearing is fixed in hole three by a locking screw and is located at the top of the groove. The lower bushing is installed in hole five. The groove is located in the lower half of the guide tube, and the upper and lower ends of the groove pass through the lower end of hole three and the upper end of hole four, respectively. The guide rod passes through the entire stepped through hole.

3. The semi-automatic tool for installing wire thread inserts according to claim 1, characterized in that: The upper end of the large diameter end of the guide rod stepped shaft is provided with an external thread that mates with a hexagonal nut. The clamping end is a rotating structure. The clamping end is located at the top of the guide rod with the external thread end. The groove is located at the bottom of the small diameter end of the guide rod stepped shaft. The wire thread sleeve is fitted on the small diameter end of the guide rod stepped shaft, and the wire thread sleeve punch is fixed in the groove at the bottom of the guide rod.

4. The semi-automatic tool for installing wire thread inserts according to claim 1, characterized in that: The outer diameter of the large-diameter end of the guide rod stepped shaft matches the inner diameter of the upper bushing and the needle roller bearing.

5. The semi-automatic tool for installing wire thread inserts according to claim 1, characterized in that: The outer diameter of the small diameter end of the guide rod stepped shaft is smaller than the inner diameter of the wire thread sleeve.

6. The semi-automatic tool for installing wire thread inserts according to claim 2, characterized in that: The outer diameter of the upper bushing is interference-fitted with hole one, the outer diameter of the lower bushing is interference-fitted with hole five, the outer diameter of the needle roller bearing is transition-fitted with hole three, and the inner diameter of the lower bushing is interference-fitted with the outer diameter of the wire thread sleeve.

7. The semi-automatic tool for installing wire thread inserts according to claim 1, characterized in that: The diameters of holes one, three, and five are all larger than those of holes two and four. The diameter of hole two is the same as that of hole four, and both match the outer diameter of the large diameter end of the guide rod stepped shaft. The height of hole three is greater than the thickness of the needle roller bearing, and the diameter of hole four is greater than the outer diameter of the wire thread sleeve.

8. The semi-automatic tool for installing wire thread inserts according to claim 2, characterized in that: The groove depth is equal to the radius of the guide tube, and the groove height is greater than the height of the wire thread sleeve.

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