Automatic nut assembling device and transformer bushing production equipment

Abstract

The utility model relates to the field of nut tightening, and provides an automatic nut assembling device and transformer bushing production equipment, the automatic nut assembling device comprises a pressing mechanism, the pressing mechanism comprises a pressing head, the pressing head is of a hollow structure, and the pressing head is used for pressing a reset piece of an assembling structure; the tightening mechanism is connected with the pressing mechanism, and the tightening mechanism is arranged in the hollow structure of the pressing head to tighten the nut and the assembling structure. The automatic nut assembling device is used for overcoming the defect that in the prior art, automatic assembling of a nut with a reset piece cannot be achieved, the reset piece of an assembling structure is pressed through a hollow pressing head of a pressing mechanism, and a tightening mechanism penetrates into the hollow pressing head to tighten the nut on the assembling structure. Full-automatic assembling of the nut with the reset piece is achieved, the assembling automation degree is improved, all parts are protected against scratching in the screwing process, and the assembling quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nut tightening, in particular to an automatic nut assembly device and transformer bushing production equipment. Background Art

[0002] In the assembly industry, the most commonly used tool is the pneumatic wrench, which can be used to tighten bolts to achieve assembly and splicing of various components. However, when using existing pneumatic wrenches, they are usually tightened manually, and the wrench needs to be turned continuously during the tightening process, which is not only inefficient, but also prone to slipping due to improper operation, which can cause injuries. At the same time, during the tightening process, since different people have different strengths, when tightening the nut on the bolt surface, it may be too loose or too tight, resulting in uneven assembly quality.

[0003] The existing automatic nut tightening equipment cannot realize automation in the nut assembly process when the nut has a pre-tightening force such as a reset member. Utility Model Content

[0004] The utility model provides an automatic nut assembly device and transformer bushing production equipment, which are used to solve the defect that the automatic assembly of nuts with reset parts cannot be realized in the prior art. The reset part is first pressed and then the nut is assembled by adopting a tightening mechanism, so that the fully automatic assembly of the nut is realized, and the nut is ensured to be tightened in place, thereby improving the assembly quality.

[0005] The utility model provides a nut automatic assembly device, comprising:

[0006] A clamping mechanism, the clamping mechanism comprising a pressing head, the pressing head is a hollow structure, and the pressing head is used to clamp the reset member of the assembly structure;

[0007] A tightening mechanism is connected to the pressing mechanism, and the tightening mechanism can move linearly relative to the pressure head along the axial direction of the assembly structure. The tightening mechanism is placed in the hollow structure of the pressure head to tighten the nut and the assembly structure.

[0008] According to the nut automatic assembly device provided by the utility model, the pressure head includes a connecting end and a pressing end, the connecting end is connected to the pressing end, the connecting end and the pressing end are hollow, and the pressing end is in the shape of a hollow cylinder.

[0009] According to the nut automatic assembly device provided by the utility model, the clamping mechanism also includes:

[0010] A first frame, wherein a mounting hole is formed on the first frame, the pressure head is mounted on the first frame, and the hollow structure of the pressure head is connected to the mounting hole;

[0011] a first slide rail assembly, one end of which is connected to the first frame, the other end of which is connected to the tightening mechanism, and the first slide rail assembly is used to make the tightening mechanism perform linear motion relative to the pressure head;

[0012] Wherein, in a non-working state, the first frame is placed between the pressure head and the tightening mechanism; in a working state, the tightening mechanism is placed in the hollow structure of the pressure head.

[0013] According to the nut automatic assembly device provided by the utility model, it also includes a lifting mechanism, the telescopic end of the lifting mechanism is connected to the clamping mechanism, and the lifting mechanism is used to adjust the relative height of the pressure head and the reset member of the assembly structure.

[0014] The nut automatic assembly device provided by the utility model also includes:

[0015] a second frame, the lifting mechanism being mounted on the second frame;

[0016] A second slide rail assembly, one end of the second slide rail assembly is mounted on the second frame, the other end of the second slide rail assembly is mounted on the clamping mechanism, and the second slide rail assembly is used to guide the clamping mechanism.

[0017] According to the nut automatic assembly device provided by the utility model, it also includes a third slide rail assembly, one end of the third slide rail assembly is installed on the second frame, the other end of the third slide rail assembly is connected to the lifting mechanism, and the third slide rail assembly is used to adjust the height of the lifting mechanism.

[0018] According to the nut automatic assembly device provided by the utility model, the second frame body further includes a positioning hole, and the positioning hole is arranged along the height direction of the second frame body;

[0019] It also includes a limiting member, one end of which is connected to the lifting mechanism, and the other end of which is used for plugging and cooperating with the positioning hole for limiting position.

[0020] The nut automatic assembly device provided by the utility model further includes a mounting seat, which is connected to the second frame and is placed below the pressure head.

[0021] According to the nut automatic assembly device provided by the utility model, the mounting seat includes a positioning column, the axis of the positioning column is colinear with the axis of the pressure head, and the positioning column is used to position the assembly structure.

[0022] The utility model also provides a transformer bushing production device, comprising the above-mentioned nut automatic assembly device.

[0023] The automatic nut assembly device provided by the utility model presses the reset piece of the assembly structure by means of the hollow pressure head of the pressing mechanism, and the tightening mechanism penetrates into the hollow pressure head to tighten the nut on the assembly structure, thereby realizing full-automatic assembly of the nut with the reset piece, improving the degree of assembly automation, and protecting the components from being scratched during the tightening process, thereby improving the assembly quality.

[0024] Furthermore, in the transformer bushing production equipment provided by the present invention, since it is provided with the automatic nut assembly device as described above, it also has the various advantages as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the nut automatic assembly device provided by the utility model;

[0027] Figure 2 It is a schematic diagram of the pressure head structure provided by the utility model;

[0028] Figure 3 yes Figure 1 A partial enlarged view of the middle A;

[0029] Figure 4 It is a half-section schematic diagram of a transformer bushing provided by the utility model.

[0030] Reference numerals:

[0031] 100: clamping mechanism; 101: pressure head; 102: first frame; 103: first slide rail assembly; 110: connecting end; 111: clamping end; 120: assembly hole; 200: tightening mechanism; 300: lifting mechanism; 301: second slide rail assembly; 302: third slide rail assembly; 400: second frame; 401: positioning hole; 402: limiter; 410: mounting seat; 411: positioning column; 500: transformer bushing; 501: core; 502: pressure plate; 503: spring; 504: oil collecting box; 505: special nut; 506: base. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the embodiments of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0036] Combine the following Figures 1 to 4 It should be understood that the following description is only an illustrative embodiment of the present invention and does not constitute a limitation on the present invention.

[0037] like Figure 1As shown, the utility model provides an automatic nut assembly device, including: a clamping mechanism 100 and a tightening mechanism 200, the clamping mechanism 100 includes a pressure head 101, the pressure head 101 is a hollow structure, and the pressure head 101 is used to clamp the reset part of the assembly structure; the tightening mechanism 200 is connected to the clamping mechanism 100, and the tightening mechanism 200 can move linearly relative to the pressure head 101 along the axial direction of the assembly structure, and the tightening mechanism 200 is placed in the hollow structure of the pressure head 101 to tighten the nut and the assembly structure.

[0038] Some existing assembly structures are provided with reset parts, and the process of tightening the nut needs to compress the reset parts and apply a pre-tightening force. The automatic nut assembly device of the utility model first compresses the reset parts on the assembly structure through the pressure head 101 of the clamping mechanism 100, and then the tightening mechanism 200 passes through the pressure head 101 to tighten the nut on the threaded part of the assembly structure to complete the automatic assembly of the nut. Tightening the nut first and then tightening the nut effectively reduces the tightening difficulty of the tightening mechanism 200, and also effectively avoids the problem of the nut being damaged by the force of the reset parts during the tightening process, or causing damage to other parts of the assembly structure. For example, the assembly structure can be a structure in which a reset part is sleeved on a transformer bushing 500 or other studs; the reset part can be a spring, rubber, air cushion, etc.

[0039] Specifically, in the initial state of the tightening mechanism 200, the tightening mechanism 200 is placed above the pressure head 101, and the tightening mechanism 200, the pressure head 101 and the assembly structure are coaxial. After the tightening mechanism 200 completes the feeding of the nut, the pressing mechanism 100 moves downward, and the reset member of the assembly structure is pressed to a preset value through the hollow pressure head 101, and the threaded part of the assembly structure is completely exposed. The tightening mechanism 200 enters the tightening state, the tightening mechanism 200 moves downward (that is, the tightening mechanism 200 moves toward the pressure head 101 along the axial direction of the assembly structure), the tightening mechanism 200 is placed in the hollow structure of the pressure head 101, and the nut is matched with the threaded part of the assembly structure, and the tightening mechanism 200 starts to rotate until the nut is tightened to a preset position; the assembly process of the nut is completed. The pressing mechanism 100 and the tightening mechanism 200 can return to their original positions simultaneously or separately.

[0040] like Figure 2 As shown, in one embodiment of the present invention, the pressure head 101 includes a connecting end 110 and a pressing end 111, the connecting end 110 is connected to the pressing end 111, the connecting end 110 and the pressing end 111 are hollow, and the pressing end 111 is in the shape of a hollow cylinder. For example, the tightening mechanism 200 passes through the hollow structure of the connecting end 110, and then passes through the hollow structure of the pressing end 111 to cooperate with the threaded portion of the assembly structure.

[0041] The inner diameter of the clamping end 111 is larger than the size of the tightening mechanism 200 after clamping the nut, so that the tightening mechanism 200 can rotate in the hollow of the clamping end 111. The outer diameter of the clamping end 111 is compatible with the assembly structure, so that the reset parts of the assembly structure can be completely clamped.

[0042] Of course, the structure of the clamping end 111 can also be a structure of multiple spaced clamping columns, one end of which is connected to the clamping end 111, and the other end of which is in contact with the reset member for clamping. Of course, the clamping end 111 and the connecting end 110 can be connected in a detachable structure, and the clamping end 111 structure can be replaced with a suitable one for the unused assembly structure.

[0043] like Figure 3 As shown, in another embodiment of the utility model, the clamping mechanism 100 also includes: a first frame 102 and a first slide rail assembly 103, the first frame 102 is provided with an assembly hole 120, the pressing head 101 is installed on the first frame 102, and the hollow structure of the pressing head 101 is connected to the assembly hole 120; one end of the first slide rail assembly 103 is connected to the first frame 102, and the other end of the first slide rail assembly 103 is connected to the tightening mechanism 200, and the first slide rail assembly 103 is used to make the tightening mechanism 200 perform linear motion relative to the pressing head 101; wherein, in the non-working state, the first frame 102 is placed between the pressing head 101 and the tightening mechanism 200; in the working state, the tightening mechanism 200 is placed in the hollow structure of the pressing head 101.

[0044] Specifically, the connection end 110 of the pressure head 101 is connected to the assembly hole 120 of the first frame 102, and the hollow of the connection end 110 is connected to the assembly hole 120, and the tightening mechanism 200 first passes through the assembly hole 120 and then passes through the hollow structure of the pressure head 101. The pressure head 101 is connected to the bottom of the first frame 102, and the first slide rail assembly 103 is connected to the top of the first frame 102. The up and down of the utility model refers to the Figure 1 In the working position shown, up and down in the height direction.

[0045] With respect to the first slide rail assembly 103 of the utility model, the first slide rail assembly 103 includes a first driving member, a first slideway and a first slider, and the first slideway and the first slider slide up and down along the height direction. The first slideway is connected to the first frame 102, the first slider is connected to the tightening mechanism 200, and the first driving member is connected between the first slideway and the first slider, driving the first slider to slide along the first slideway. The first slide rail assembly 103 drives the tightening mechanism 200 to move toward the direction of the pressure head 101, and drives the tightening mechanism 200 away from the direction of the pressure head 101. For example, the tightening mechanism 200 can be a three-claw centering device, which is compatible with nuts of different sizes and ensures that the nuts and the assembly structure are coaxial.

[0046] In the present invention, the non-working state may be the initial state of the tightening mechanism 200, a state when no material is loaded, and the working state is a state when the tightening mechanism 200 starts to tighten the nut by rotating.

[0047] Continue to refer Figure 1 In some embodiments of the utility model, the nut automatic assembly device also includes a lifting mechanism 300, the telescopic end of the lifting mechanism 300 is connected to the clamping mechanism 100, and the lifting mechanism 300 is used to adjust the relative height between the pressure head 101 and the reset part of the assembly structure.

[0048] Among them, the lifting mechanism 300 adjusts the distance between the pressure head 101 and the assembly structure along the height direction, and the lifting mechanism 300 can be a structure such as a hydraulic cylinder, an electric cylinder, a gear rack, etc. The lifting mechanism 300 drives the clamping mechanism 100, that is, it drives the tightening mechanism 200 to move toward the assembly structure at the same time. In other words, the lifting mechanism 300 is connected to the first frame 102, and the lifting mechanism 300 drives the first frame 102 to move downward, close to the assembly structure, until the pressure head 101 presses the reset member to a preset value, and the lifting mechanism 300 stays at this position. The lifting mechanism 300 has a pressure sensor and a displacement sensor, which are used to obtain the pressure after the pressure head 101 contacts the reset member in real time, until the pressure of the pressure head 101 on the reset member reaches a preset pressure value, and the downward displacement of the lifting mechanism 300 reaches a preset displacement value, and the lifting mechanism 300 stops. After the lifting mechanism 300 stops, the first slide rail assembly 103 drives the tightening assembly to start working. After the tightening is completed, the lifting mechanism 300 is lifted to the original position.

[0049] Furthermore, in other embodiments of the utility model, the nut automatic assembly device also includes: a second frame 400 and a second slide rail assembly 301, and the lifting mechanism 300 is installed on the second frame 400; one end of the second slide rail assembly 301 is installed on the second frame 400, and the other end of the second slide rail assembly 301 is installed on the clamping mechanism 100, and the second slide rail assembly 301 is used to guide the clamping mechanism 100.

[0050] The second slide rail assembly 301 includes a second slideway and a second slider. The second slideway is mounted on the second frame 400 and arranged along the height direction of the second frame 400. The second slider slides on the second slideway. The second slider is connected to the clamping mechanism 100. The lifting mechanism 300 is connected to the second slider. The lifting mechanism 300 is telescopic to realize that the second slider drives the clamping mechanism 100 to move up and down along the second track. The second track is parallel to the telescopic rod of the lifting mechanism 300, parallel to the first track, and parallel to the center line of the assembly structure.

[0051] In addition, in an optional embodiment of the present utility model, the nut automatic assembly device further includes: a third slide rail assembly 302, one end of the third slide rail assembly 302 is mounted on the second frame 400, the other end of the third slide rail assembly 302 is connected to the lifting mechanism 300, and the third slide rail assembly 302 is used to adjust the height of the lifting mechanism 300. In other words, the third slide rail assembly 302 can achieve the overall height adjustment of the lifting mechanism 300.

[0052] For example, the third slide rail assembly 302 includes a second driving member and a third slider, the third slider slides in cooperation with the second slide guide, and the second driving member drives the third slider to move linearly on the second slide rail, thereby adjusting the height of the lifting mechanism 300 on the second frame 400, that is, adjusting the relative height of the pressure head 101 relative to the assembly structure. Among them, the third slider is placed above the second slider. The second driving member can be a gear rack mechanism, a telescopic cylinder or a screw mechanism, and the second driving member is installed on the second frame 400. The third slide rail assembly 302 realizes the height adjustment of the lifting mechanism 300, and further can realize the assembly of nuts of assembly structures of different lengths.

[0053] Continue to refer Figure 1 In some other embodiments of the utility model, the second frame 400 also includes a positioning hole 401, which is arranged along the height direction of the second frame 400; the nut automatic assembly device also includes a limiting member 402, one end of the limiting member 402 is connected to the lifting mechanism 300, and the other end of the limiting member 402 is used for plugging and cooperating with the positioning hole 401 for limiting.

[0054] For example, a plurality of positioning holes 401 are arranged at intervals along the height direction of the second frame 400, that is, along the extension direction of the second slide rail. When the lifting mechanism 300 is adjusted to a suitable height, the limiting member 402 is inserted into the positioning hole 401 to lock the lifting mechanism 300 at the height, and then the relative height between the pressing head 101 and the assembly structure is further adjusted by the telescopic rod of the lifting mechanism 300 to realize the pressing and resetting member.

[0055] The stopper 402 can be arranged on both sides of the lifting mechanism 300, that is, corresponding positioning holes 401 are arranged on both sides of the second frame 400. For example, the stopper 402 can be a structure such as a cylinder, an electric cylinder, a hydraulic cylinder, etc., and a column matching the positioning hole 401 is arranged at the end.

[0056] In addition, if Figure 1 As shown, in another optional embodiment of the present invention, the nut automatic assembly device further comprises a mounting seat 410, the mounting seat 410 is connected to the second frame 400, and the mounting seat 410 is placed below the pressure head 101. The mounting seat 410 is used to install the assembly structure.

[0057] Further, in an embodiment of the present utility model, the mounting seat 410 includes a positioning column 411, the axis of the positioning column 411 is colinear with the axis of the pressure head 101, and the positioning column 411 is used to position the assembly structure. For example, the assembly structure is a transformer bushing 500, and the transformer bushing 500 is inserted into the positioning column 411 so that the axis of the transformer bushing 500 coincides with the positioning column 411; the transformer bushing 500 is positioned to facilitate the assembly of the nut.

[0058] For the transformer bushing 500, if Figure 3 and Figure 4 As shown, the transformer bushing 500 includes a base 506, an oil collecting box 504, a core 501, a spring 503, a pressure plate 502 and a special nut 505. The base 506 is provided with a mounting hole, which can be plugged into the positioning column 411. The core 501 is arranged along the axial direction of the transformer bushing 500, and the axis of the core 501 is the axis of the transformer bushing 500. The oil collecting box 504 is provided with a spring 503, a pressure plate 502 and a special nut. The spring 503 is sleeved on the core 501, and the pressure plate 502 is placed above the spring 503. The special nut 505 cooperates with the threaded portion of the core 501 to press the spring 503 onto the core 501.

[0059] The specific working process is as follows: the base 506 is inserted into the positioning column 411, the oil collecting box 504 is placed under the pressure head 101, the special nut 505 is loaded into the tightening mechanism 200, and the third slide rail assembly 302 places the lifting mechanism 300 at a suitable height and then positions and locks it on the second frame 400. The lifting mechanism 300 drives the first frame 102 to move downward along the second track, so that the pressure head 101 contacts the pressure plate 502, and the lifting mechanism 300 continues to press down, and the pressure head 101 presses the spring 503 until the pressure value obtained by the lifting mechanism 300 reaches the preset pressure value, and the downward displacement of the lifting mechanism 300 reaches the preset displacement value.

[0060] The tightening mechanism 200 extends downward through the first slide rail assembly 103, and places the special nut 505 in the pressure head 101 until the tightening mechanism 200 contacts the threaded portion of the core 501, the first slide rail assembly 103 stops, and the tightening mechanism 200 begins to tighten the special nut 505 on the core 501. The tightening mechanism 200 obtains the tightening torque and calculates the descending displacement until the tightening torque reaches the preset torque value and the descending displacement reaches the preset descending displacement, and the tightening mechanism 200 loosens the special nut 505. The lifting mechanism 300 rises, and the first slide rail assembly 103 rises and returns to its position.

[0061] The utility model also includes a transformer bushing 500 production device, including the nut automatic assembly device of the above embodiment.

[0062] The automatic nut assembly device provided by the utility model presses the reset piece of the assembly structure through the hollow pressure head 101 of the pressing mechanism 100, and the tightening mechanism 200 penetrates into the hollow pressure head 101 to tighten the nut on the assembly structure, thereby realizing full-automatic assembly of nuts with reset pieces, improving the degree of assembly automation, and ensuring that the nuts are tightened in place. The tightening process protects the various components from being scratched, thereby improving the assembly quality.

[0063] Furthermore, in the transformer bushing 500 production equipment provided by the present invention, since it is provided with the automatic nut assembly device as described above, it also has the various advantages as described above.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A nut automatic assembly device, characterized in that: include: A pressing mechanism, the pressing mechanism comprising a pressing head, the pressing head being a hollow structure, and the pressing head being used to press a reset member of the assembly structure; A tightening mechanism is connected to the pressing mechanism, and the tightening mechanism can move linearly relative to the pressure head along the axial direction of the assembly structure. The tightening mechanism is placed in the hollow structure of the pressure head to tighten the nut and the assembly structure.

2. The nut automatic assembly device according to claim 1, characterized in that: The pressure head comprises a connecting end and a pressing end, the connecting end is connected to the pressing end, the connecting end and the pressing end are hollow, and the pressing end is in a hollow cylindrical shape.

3. The nut automatic assembly device according to claim 1, characterized in that: The clamping mechanism also includes: A first frame, wherein a mounting hole is formed on the first frame, the pressure head is mounted on the first frame, and the hollow structure of the pressure head is connected to the mounting hole; a first slide rail assembly, one end of which is connected to the first frame, the other end of which is connected to the tightening mechanism, and the first slide rail assembly is used to make the tightening mechanism perform linear motion relative to the pressure head; Wherein, in a non-working state, the first frame is placed between the pressure head and the tightening mechanism; in a working state, the tightening mechanism is placed in the hollow structure of the pressure head.

4. The nut automatic assembly device according to claim 1 or 3, characterized in that: It also includes a lifting mechanism, the telescopic end of the lifting mechanism is connected to the clamping mechanism, and the lifting mechanism is used to adjust the relative height of the pressure head and the reset member of the assembly structure.

5. The nut automatic assembly device according to claim 4, characterized in that: Also includes: a second frame, the lifting mechanism being mounted on the second frame; A second slide rail assembly, one end of the second slide rail assembly is mounted on the second frame, the other end of the second slide rail assembly is mounted on the clamping mechanism, and the second slide rail assembly is used to guide the clamping mechanism.

6. The nut automatic assembly device according to claim 5, characterized in that: It also includes a third slide rail assembly, one end of which is mounted on the second frame, and the other end of which is connected to the lifting mechanism, and the third slide rail assembly is used to adjust the height of the lifting mechanism.

7. The nut automatic assembly device according to claim 6, characterized in that: The second frame body further comprises a positioning hole, and the positioning hole is arranged along the height direction of the second frame body; It also includes a limiting member, one end of which is connected to the lifting mechanism, and the other end of which is used for plugging and cooperating with the positioning hole for limiting position.

8. The nut automatic assembly device according to any one of claims 5 to 7, characterized in that: It also includes a mounting seat, which is connected to the second frame and is placed below the pressure head.

9. The nut automatic assembly device according to claim 8, characterized in that: The mounting seat comprises a positioning column, the axis of which is colinear with the axis of the pressure head, and the positioning column is used to position the assembly structure.

10. A transformer bushing production equipment, characterized in that: A nut automatic assembly device comprising any one of claims 1 to 9.

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