Bolt tightening device and production line

Abstract

The utility model relates to the technical field of fastener assembly, and provides a bolt tightening device and a production line. The bolt tightening device is provided with the positioning hole, and the positioning hole is used for positioning the bolt in the state that the bolt is located in the positioning hole; the bolt tightening device can abut against the head of the bolt through the edge of the positioning hole and can rotate relative to the bolt with the axial direction of the bolt as a rotating shaft so that the head of the bolt can stretch into the positioning hole. In specific implementation, when the bolt needs to be tightened, the edge of the positioning hole in the bolt tightening device firstly abuts against the head of the bolt, then the bolt tightening device starts to rotate, the positioning hole can rotate relative to the bolt along with rotation of the bolt tightening device, and when the positioning hole rotates to be aligned with the head of the bolt, the head of the bolt can enter the positioning hole; when the head of the bolt enters the positioning hole, the bolt can be positioned by the positioning hole, so that cap recognition is completed, and the technical problem of low bolt screwing efficiency in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fastener assembly, in particular to a bolt tightening device and a production line. Background Art

[0002] Tightening bolts is a common assembly process. In the prior art, if you want to tighten a bolt, the operator is generally required to first hold a tightening gun, and then place the head of the bolt into the positioning hole of the tightening gun. Since the shape of the positioning hole of the tightening gun matches the shape of the head of the bolt, when the head of the bolt is placed in the positioning hole of the tightening gun, the bolt can be positioned. This step is also called cap recognition. After the bolt is positioned, the tightening gun is started and the bolt is rotated by the tightening gun.

[0003] However, since people need to manually place the head of the bolt into the positioning hole of the tightening gun each time tightening, the tightening efficiency is affected. Utility Model Content

[0004] The utility model provides a bolt tightening device and a production line, which are used to solve the technical problem of low bolt tightening efficiency in the prior art.

[0005] The utility model provides a bolt tightening device, which has a positioning hole, and the positioning hole is used to position the bolt when the bolt is located in the positioning hole; wherein the bolt tightening device can abut the head of the bolt through the edge of the positioning hole, and can rotate relative to the bolt along the axial direction of the bolt as a rotating shaft, so that the head of the bolt extends into the positioning hole.

[0006] According to one embodiment of the utility model, the bolt tightening device includes: a positioning unit; a positioning hole provided in the positioning unit; a rotation driving unit connected to the positioning unit and used to drive the positioning unit to rotate; an elastic unit surrounding the rotation driving unit and clamped between the positioning unit and the rotation driving unit.

[0007] According to one embodiment of the utility model, the positioning unit includes a sleeve, a bearing and a bolt limit sleeve; the positioning hole is provided in the sleeve; the sleeve has a first end and a second end relatively arranged along its axial direction, and the sleeve is provided with a setting hole that can be connected to the positioning hole; the setting hole and the positioning hole are arranged in sequence along the direction from the second end to the first end; the rotation driving unit can be slidably inserted into the setting hole along the axial direction of the sleeve to drive the sleeve to rotate; the bearing is located in the setting hole and is sleeved on the rotation driving unit; the bolt limit sleeve is located in the setting hole and is sleeved on the bearing, and there is a gap between the outer surface and the hole wall of the setting hole; the elastic unit is clamped between the sleeve and the rotation driving unit.

[0008] According to one embodiment of the utility model, the rotation drive unit includes a drive rod and a rotation drive assembly; the drive rod is arranged along the axial direction of the sleeve; the output end of the rotation drive assembly is passed through the drive rod and is arranged in the setting hole; the bearing is sleeved on the drive rod; and the elastic unit is clamped between the sleeve and the drive rod.

[0009] According to one embodiment of the utility model, the bolt tightening device also includes a ventilation unit, the ventilation unit has an air cavity and an air suction port that can be connected to the air cavity; the air suction port is used to connect to the vacuum generating unit; the driving rod can be rotatably inserted into the ventilation unit, and the driving rod has an air duct, an air inlet and an exhaust port; the air duct is located inside the driving rod; the air inlet is provided at the end of the driving rod and is located in the setting hole, and the air inlet is used to suck the bolt located in the positioning hole by the negative pressure generated by the vacuum generating unit when the air suction port is connected to the vacuum generating unit; the exhaust port is provided on the side wall of the driving rod and is located in the air cavity.

[0010] According to one embodiment of the utility model, the rotation drive assembly includes a housing and a motor; the motor is arranged in the housing, and the output end of the motor is penetrated into the setting hole through a driving rod.

[0011] According to one embodiment of the utility model, the bolt tightening device also includes a moving unit connected to the ventilation unit, the sleeve of the positioning unit and / or the rotation drive unit, and the moving unit is used to change the position of the ventilation unit, the rotation drive unit and the positioning unit.

[0012] According to one embodiment of the utility model, the moving unit includes a supporting assembly and a linear motion assembly; the linear motion assembly is arranged on the supporting assembly and connected to the ventilation unit, and the linear motion assembly can drive the ventilation unit to perform reciprocating linear motion along the axial direction of the sleeve.

[0013] According to one embodiment of the utility model, the support assembly includes a base and a linear slide rail; the base has a slide rail extending along the axial direction of the sleeve; the linear slide rail is movably arranged on the slide rail; the linear motion assembly is arranged on the base and connected to the ventilation unit; the ventilation unit is arranged on the linear slide rail.

[0014] The utility model also provides a production line, comprising: the bolt tightening device of the above embodiment.

[0015] The characteristics and advantages of the bolt tightening device and production line of the utility model are:

[0016] When the bolt needs to be tightened, the edge of the positioning hole on the bolt tightening device first abuts against the head of the bolt, and then the bolt tightening device starts to rotate. As the bolt tightening device rotates, the positioning hole will rotate relative to the bolt. Taking the shape of the positioning hole matching the shape of the bolt as an example, when the positioning hole is rotated to be relatively aligned with the head of the bolt, the head of the bolt will enter the positioning hole. When the head of the bolt enters the positioning hole, the positioning hole will position the bolt, thereby completing the cap recognition. As a result, there is no need for people to manually recognize the cap. That is, through the above-mentioned structural arrangement, when tightening the bolt, there is no need for people to manually place the head of the bolt into the positioning hole of the tightening gun. The bolt tightening device of the utility model can replace people's manual operation to realize automatic cap recognition, which can save manpower, facilitate tightening, improve tightening efficiency, and solve the technical problem of low bolt tightening efficiency in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional schematic diagram of the bolt tightening device of the utility model.

[0019] Figure 2 It is a three-dimensional schematic diagram of the local structure of the bolt tightening device of the utility model.

[0020] Figure 3 It is a front view schematic diagram of the local structure of the bolt tightening device of the utility model.

[0021] Figure 4 yes Figure 3 Cross-sectional view along AA direction.

[0022] Figure 5 yes Figure 4 Enlarged view of part B in the middle.

[0023] Reference numerals:

[0024] 1000, bolt; 100, positioning unit; 110, sleeve; 111, positioning hole; 112, setting hole; 1101, first end; 1102, second end; 120, bearing; 130, bolt limiting sleeve; 200, rotation drive unit; 210, drive rod; 211, air duct; 212, air inlet; 213, exhaust port; 220, rotation drive assembly; 300, elastic unit; 400, ventilation unit; 410, air cavity; 420, air intake; 500, moving unit; 510, supporting assembly; 511, base; 512, linear slide rail; 520, linear motion assembly; O, axial direction of the sleeve. DETAILED DESCRIPTION

[0025] 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.

[0026] In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present embodiment.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this embodiment, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0029] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Figures 1 to 5 The bolt tightening device and production line provided by the utility model are shown. As can be seen from the figure, the bolt tightening device of the utility model has a positioning hole 111, and the positioning hole 111 is used to position the bolt 1000 when the bolt 1000 is located in the positioning hole 111; wherein, the bolt tightening device can abut the head of the bolt 1000 through the edge of the positioning hole 111, and can rotate relative to the bolt 1000 along the axial direction of the bolt 1000 as the rotating axis, so that the head of the bolt 1000 extends into the positioning hole 111.

[0031] In specific implementation, when the bolt 1000 needs to be tightened, the edge of the positioning hole 111 on the bolt tightening device first abuts against the head of the bolt 1000, and then the bolt tightening device starts to rotate. As the bolt tightening device rotates, the positioning hole 111 rotates relative to the bolt 1000. Taking the shape of the positioning hole 111 matching the shape of the bolt 1000 as an example, when the positioning hole 111 rotates to be aligned with the head of the bolt 1000, the head of the bolt 1000 enters the positioning hole 111. When the bolt 1000 is in the positioning hole 111, the positioning hole 111 will position the bolt 1000, thereby completing the cap recognition. As a result, there is no need for people to manually recognize the cap. That is, through the above-mentioned structural setting, when people tighten the bolt 1000, there is no need for people to manually place the head of the bolt 1000 into the positioning hole 111 of the tightening gun. The bolt tightening device of the utility model can replace people's manual operation and realize automatic cap recognition, which can save manpower, facilitate tightening, improve tightening efficiency, and solve the technical problem of low efficiency in tightening the bolt 1000 in the prior art.

[0032] In this embodiment, the shape of the positioning hole 111 may match the shape of the head of the bolt 1000 .

[0033] According to one embodiment of the utility model, the bolt tightening device may include a positioning unit 100, a rotation driving unit 200 and an elastic unit 300 (such as a spring), the positioning hole 111 is provided in the positioning unit 100; the rotation driving unit 200 is connected to the positioning unit 100, and is used to drive the positioning unit 100 to rotate; the elastic unit 300 surrounds the rotation driving unit 200, and is clamped between the positioning unit 100 and the rotation driving unit 200.

[0034] During specific implementation, the positioning hole 111 of the positioning unit 100 can position the head of the bolt 1000. The positioning unit 100 is flexible under the action of the elastic unit 300, and the positioning unit 100 can abut (press) against the surface of the head of the bolt 1000; the rotation drive unit 200 can drive the positioning unit 100 to rotate.

[0035] According to one embodiment of the utility model, the positioning unit 100 includes a sleeve 110, a bearing 120 and a bolt limiting sleeve 130; the positioning hole 111 is provided in the sleeve 110; the sleeve 110 has a first end 1101 and a second end 1102 relatively arranged along its axial direction O, and the sleeve 110 is provided with a setting hole 112 that can communicate with the positioning hole 111; the setting hole 112 and the positioning hole 111 are arranged in sequence along the direction from the second end 1102 to the first end 1101; the rotation driving unit 200 can be slidably penetrated into the setting hole 112 along the axial direction O of the sleeve 110, for driving the sleeve 110 to rotate; the bearing 120 is located in the setting hole 112 and is sleeved on the rotation driving unit 200; the bolt limiting sleeve 130 is located in the setting hole 112 and is sleeved on the bearing 120, and there is a gap between the outer surface and the hole wall of the setting hole 112; the elastic unit 300 is clamped between the sleeve 110 and the rotation driving unit 200.

[0036] During specific implementation, the rotation driving unit 200 can drive the sleeve 110 to rotate, and the rotation of the sleeve 110 can drive the bolt 1000 in the positioning hole 111 to rotate so as to tighten the bolt 1000; during the rotation of the sleeve 110, the bolt limiting sleeve 130 is basically stationary, that is, the sleeve 110 can rotate relative to the bolt limiting sleeve 130 under the action of the rotation driving unit 200, thereby, the sleeve 110 basically will not contact with the bolt limiting sleeve 130 during the rotation process, and will not cause wear to the bolt limiting sleeve 130, thereby ensuring the durability of the bolt limiting sleeve 130.

[0037] In this embodiment, the setting hole 112 may include a first setting sub-hole and a second setting sub-hole arranged in sequence and connected along the direction from the first end 1101 to the second end 1102, the first setting sub-hole may be a round hole, and the second setting sub-hole may be a square hole; the cross-section of the rotation drive unit 200 may be square; the bearing 120 and the bolt limit sleeve 130 may be located in the first setting sub-hole; the rotation drive unit 200 may pass through the first setting sub-hole and the second setting sub-hole.

[0038] According to one embodiment of the utility model, the rotation drive unit 200 may include a drive rod 210 and a rotation drive assembly 220; the drive rod 210 is arranged along the axial direction O of the sleeve 110; the output end of the rotation drive assembly 220 is passed through the drive rod 210 and is arranged in the setting hole 112; the bearing 120 is sleeved on the drive rod 210.

[0039] During specific implementation, the rotation of the driving assembly 220 can drive the driving rod 210 to rotate, and the rotation of the driving rod 210 can drive the sleeve 110 to rotate, and the rotation of the sleeve 110 can drive the bolt 1000 in the positioning hole 111 to rotate, so as to tighten the bolt 1000.

[0040] In this embodiment, the rotation driving assembly 220 includes a housing and a motor; the motor is disposed in the housing, and the output end of the motor is penetrated into the setting hole 112 through the driving rod 210 .

[0041] According to one embodiment of the utility model, the bolt tightening device may also include a ventilation unit 400, the ventilation unit 400 has an air cavity 410 and an air suction port 420 that can be connected to the air cavity 410; the air suction port 420 is used to connect to the vacuum generating unit; the driving rod 210 can be rotatably penetrated in the ventilation unit 400, and the driving rod 210 has an air duct 211, an air inlet 212 and an exhaust port 213; the air duct 211 is located inside the driving rod 210; the air inlet 212 is provided at the end of the driving rod 210 and is located in the setting hole 112, and the air inlet 212 is used to suck the bolt 1000 located in the positioning hole 111 by the negative pressure generated by the vacuum generating unit when the air suction port 420 is connected to the vacuum generating unit; the exhaust port 213 is provided on the side wall of the driving rod 210 and is located in the air cavity 410.

[0042] In specific implementation, through the above-mentioned structural setting, negative pressure can be used to suck up the bolt 1000. In addition, since the design of the suction hose is omitted, not only the structure is simple and the cost is low, but also the suction hose will not be entangled.

[0043] According to one embodiment of the utility model, the bolt tightening device may also include a moving unit 500 connected to the ventilation unit 400, the sleeve 110 of the positioning unit 100 and / or the rotation drive unit 200, and the moving unit 500 is used to change the position of the ventilation unit 400, the rotation drive unit 200 and the positioning unit 100.

[0044] In specific implementation, the moving unit 500 can drive the above three to move, so as to change the positions of the ventilation unit 400, the rotation driving unit 200 and the positioning unit 100, so as to avoid the interference between the bolt tightening device of the utility model and other equipment during use.

[0045] According to one embodiment of the utility model, the moving unit 500 may include a supporting assembly 510 and a linear motion assembly 520 (such as a cylinder); the linear motion assembly 520 is arranged on the supporting assembly 510 and connected to the ventilation unit 400, and the linear motion assembly 520 can drive the ventilation unit 400 to perform reciprocating linear motion along the axial direction O of the sleeve 110.

[0046] In this embodiment, the support assembly 510 may include a base 511 and a linear slide 512; the base 511 has a slide extending along the axial direction O of the sleeve 110; the linear slide 512 can be movably arranged on the slide; the linear motion assembly 520 is arranged on the base 511 and connected to the ventilation unit 400; the ventilation unit 400 is arranged on the linear slide 512.

[0047] During specific implementation, the linear slide rail 512 can perform linear motion on the base 511 ; the base 511 can provide a mounting base for the linear motion assembly 520 and the linear slide rail 512 .

[0048] According to one embodiment of the utility model, the bolt tightening device of the utility model may also include a guide seat, which is located at the end of the base 511 and connected to the base 511. The guide seat has a through hole extending along the axial direction O of the sleeve 110, and the drive rod 210 passes through the guide seat through the through hole.

[0049] The utility model also provides a production line, comprising the bolt tightening device of the above embodiment. The specific structure, working principle and beneficial effects of the bolt tightening device are the same as those of the above embodiment, and will not be repeated here.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0051] 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 bolt tightening device, characterized in that: The bolt tightening device has a positioning hole (111), and the positioning hole (111) is used to position the bolt (1000) when the bolt (1000) is located in the positioning hole (111); The bolt tightening device can abut the head of the bolt (1000) through the edge of the positioning hole (111), and can rotate relative to the bolt (1000) along the axial direction of the bolt (1000) as the rotation axis, so that the head of the bolt (1000) extends into the positioning hole (111).

2. The bolt tightening device according to claim 1, characterized in that: The bolt tightening device comprises: A positioning unit (100); the positioning hole (111) is provided on the positioning unit (100); A rotation driving unit (200), connected to the positioning unit (100) and used to drive the positioning unit (100) to rotate; The elastic unit (300) surrounds the rotation driving unit (200) and is sandwiched between the positioning unit (100) and the rotation driving unit (200).

3. The bolt tightening device according to claim 2, characterized in that: The positioning unit (100) comprises a sleeve (110), a bearing (120) and a bolt limiting sleeve (130); The positioning hole (111) is provided on the sleeve (110); The sleeve (110) has a first end (1101) and a second end (1102) which are arranged opposite to each other along the axial direction (O) thereof, and the sleeve (110) is provided with a setting hole (112) which can communicate with the positioning hole (111); The setting holes (112) and the positioning holes (111) are arranged in sequence along the direction from the second end (1102) to the first end (1101); The rotation driving unit (200) can be slidably disposed in the setting hole (112) along the axial direction (O) of the sleeve (110), and is used to drive the sleeve (110) to rotate; The bearing (120) is located in the setting hole (112) and is sleeved on the rotation drive unit (200); The bolt limiting sleeve (130) is located in the setting hole (112) and is sleeved on the bearing (120), and a gap is formed between the outer surface and the hole wall of the setting hole (112); The elastic unit (300) is sandwiched between the sleeve (110) and the rotation driving unit (200).

4. The bolt tightening device according to claim 3, characterized in that: The rotation drive unit (200) comprises a drive rod (210) and a rotation drive assembly (220); The driving rod (210) is arranged along the axial direction (O) of the sleeve (110); The output end of the rotation driving component (220) is inserted into the setting hole (112) through the driving rod (210); The bearing (120) is sleeved on the driving rod (210); The elastic unit (300) is sandwiched between the sleeve (110) and the driving rod (210).

5. The bolt tightening device according to claim 4, characterized in that: The bolt tightening device further comprises a ventilation unit (400), wherein the ventilation unit (400) comprises an air cavity (410) and an air inlet (420) capable of communicating with the air cavity (410); The air suction port (420) is used to connect to the vacuum generating unit; The driving rod (210) is rotatably disposed in the ventilation unit (400), and the driving rod (210) has an air passage (211), an air inlet (212), and an air outlet (213); The air channel (211) is located inside the driving rod (210); The air inlet (212) is provided at the end of the driving rod (210) and is located in the setting hole (112), and the air inlet (212) is used to suck the bolt (1000) located in the positioning hole (111) through the negative pressure generated by the vacuum generating unit when the air inlet (420) is connected to the vacuum generating unit; The exhaust port (213) is arranged on the side wall of the driving rod (210) and is located in the air cavity (410).

6. The bolt tightening device according to claim 5, characterized in that: The rotation drive assembly (220) comprises a housing and a motor; The motor is arranged on the housing, and the output end of the motor is inserted into the setting hole (112) through the driving rod (210).

7. The bolt tightening device according to claim 5 or 6, characterized in that: The bolt tightening device further comprises a moving unit (500) connected to the ventilation unit (400), the sleeve (110) of the positioning unit (100) and / or the rotation drive unit (200), wherein the moving unit (500) is used to change the positions of the ventilation unit (400), the rotation drive unit (200) and the positioning unit (100).

8. The bolt tightening device according to claim 7, characterized in that: The moving unit (500) comprises a supporting assembly (510) and a linear motion assembly (520); The linear motion component (520) is disposed on the support component (510) and connected to the ventilation unit (400). The linear motion component (520) can drive the ventilation unit (400) to perform reciprocating linear motion along the axial direction (O) of the sleeve (110).

9. The bolt tightening device according to claim 8, characterized in that: The support assembly (510) comprises a base (511) and a linear slide rail (512); The base (511) has a slideway extending along the axial direction (O) of the sleeve (110); The linear slide rail (512) is movably arranged on the slideway; The linear motion component (520) is disposed on the base (511) and connected to the ventilation unit (400); The ventilation unit (400) is arranged on the linear slide rail (512).

10. A production line, characterized in that: include: A bolt tightening device as claimed in any one of claims 1 to 9.

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