An automatic marking device for tightening of an outer hexagonal bolt

Abstract

The application discloses a kind of outer hexagonal bolt tightening automatic marking device, comprising: sleeve and marking piece, sleeve has the cavity of one end opening arrangement, the cavity is used to limit cooperation with bolt;Marking piece is rotatably mounted in the cavity by bearing, and it is coaxially arranged with the cavity, and at least relative to the inner side wall of the bearing is fixedly arranged circumferentially, one end of the marking piece is used to abut with the bolt and mark;Wherein, the marking piece rotates relative to the sleeve, to form circular mark on the surface of the bolt.This scheme is through the cavity in sleeve and bolt circumferential cooperation, manually rotate sleeve to tighten bolt, since marking piece is mounted in cavity by bearing, marking piece can rotate relative to sleeve, marking piece rotates by inertia in the process of sleeve rotation, mark circle on bolt in the process of rotation, realize automatic marking after tightening.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mechanical processing tooling, in particular to a hexagonal bolt tightening automatic marking device. BACKGROUND

[0002] The hexagonal bolt is a commonly used fastener, and correct bolt tightening is an important guarantee for its safety and stability. Bolt tightening marking refers to marking on the connection after completing bolt tightening to record the completion of tightening, and the tightening marking can ensure that the tightening condition of each bolt is recorded for later maintenance and inspection.

[0003] The existing bolt tightening marking method is to manually mark with a paint pen after tightening the bolt. However, manual marking may miss or mislabel, and affect the assembly efficiency of the parts. SUMMARY

[0004] The main purpose of the present application is to provide a hexagonal bolt tightening automatic marking device, which aims to solve the problem of manual marking of the existing bolt assembly condition, affecting the assembly efficiency of the parts.

[0005] To achieve the above purpose, the present application provides a hexagonal bolt tightening automatic marking device, wherein the hexagonal bolt tightening automatic marking device comprises a sleeve and a marking piece, the sleeve has an open cavity at one end, and the cavity is used for limiting cooperation with the bolt; the marking piece is rotatably installed in the cavity through a bearing, and is coaxially arranged with the cavity, and is at least fixedly arranged relative to the inner side wall of the bearing, one end of the marking piece is used for abutting and marking with the bolt; wherein the marking piece rotates relative to the sleeve to form a circular mark on the surface of the bolt.

[0006] Optionally, the hexagonal bolt tightening automatic marking device comprises a mounting assembly for mounting the marking piece, the bearing is rotatably installed in the middle of the cavity, the bearing comprises an inner ring and an outer ring capable of relative rotation, the outer ring is fixedly connected with the inner side wall of the cavity, the mounting assembly is installed between the marking piece and the inner ring, and the bearing, the mounting assembly and the marking piece jointly divide the cavity into a working area communicating with the opening and a pigment area, wherein the working area is used for limiting cooperation with the bolt, and the pigment area is used for filling pigment.

[0007] Optionally, the mounting assembly is fixedly connected with the inner ring, and the marking piece is movably installed in the mounting assembly along the rotation axis direction of the bearing.

[0008] Optionally, the mounting assembly comprises:

[0009] The connecting block is fixedly connected with the inner ring, has a through hole penetrating along the bearing rotation axis direction, and a groove is arranged on the inner side wall of the through hole;

[0010] The mounting block is movably mounted in the through hole along the bearing rotation axis direction, an outer circumferential side of the mounting block is provided with a protruding block, the protruding block is mounted in the groove, and the mounting block has a mounting cavity penetrating along the bearing rotation axis direction for mounting the marking member.

[0011] The spring is arranged along the bearing rotation axis direction and is mounted in the groove, one end of the spring abuts against an inner side wall of the groove away from the opening, and the other end of the spring abuts against an outer side wall of the protruding block.

[0012] Optionally, a cross section of the marking member comprises a triangle, a quadrilateral or an ellipse, and the mounting cavity is arranged correspondingly to the marking member.

[0013] Optionally, one end of the marking member is arranged in the working area, and the other end of the marking member is arranged in the pigment area.

[0014] Optionally, one side wall of the sleeve is provided with a pouring port, and the pouring port is communicated with the pigment area.

[0015] Optionally, the outer hexagonal bolt tightening automatic marking device further comprises a torque sensor, and the torque sensor is mounted in the working area.

[0016] Optionally, the outer hexagonal bolt tightening automatic marking device further comprises an alarm device, and the alarm device is electrically connected with the torque sensor.

[0017] Optionally, the outer hexagonal bolt tightening automatic marking device further comprises a sealing ring, and the sealing ring is fixedly arranged at one end of the bearing.

[0018] In the technical scheme, the cavity in the sleeve is circumferentially matched with the bolt, the sleeve is manually rotated to tighten the bolt, the marking member is mounted in the cavity through the bearing, the marking member can rotate relative to the sleeve, the marking member rotates by inertia in the process of rotating the sleeve, the bolt is marked in the process of rotating, and automatic marking is realized after tightening. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0020] Figure 1 Figure 1 is a perspective view of an embodiment of the hexagonal bolt tightening automatic marking device provided by the present application.

[0021] Explanation of reference numerals:

[0022]

[0023] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments in combination with the accompanying drawings. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0026] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0027] At present, the bolt assembly condition is marked by manual marking, which has problems of affecting the part assembly efficiency.

[0028] In order to solve the above problems, the present application provides a hexagonal bolt tightening automatic marking device, Figure 1 The specific embodiments of the hexagonal bolt tightening automatic marking device provided by the present application.

[0029] Please refer toFigure 1 The outer hexagonal bolt tightening automatic marking device 100 comprises a sleeve 1 and a marking piece 2, the sleeve 1 is provided with a cavity 11 with an open end, the cavity 11 is used for limiting cooperation with the bolt; the marking piece 2 is rotatably installed in the cavity 11 through a bearing 3, and is coaxially arranged with the cavity 11, and is fixedly arranged at least relative to the inner side wall of the bearing 3 in the circumferential direction, one end of the marking piece 2 is used for abutting against the bolt and marking; wherein the marking piece 2 rotates relative to the sleeve 1 to form a circular mark on the surface of the bolt.

[0030] In the technical scheme provided by the application, the sleeve 1 is provided with a cavity 11 with an open end, and the inner side wall of the cavity 11 is used for circumferential cooperation with the bolt. The sleeve 1 is manually rotated for tightening the bolt. In order to be able to mark on the bolt, first, a marking piece 2 is arranged in the cavity 11 of the bolt, and second, after the sleeve 1 is rotated to tighten the bolt, the marking piece 2 needs to leave a marking pattern on the bolt to identify the bolt tightening, so the marking piece 2 is rotatably installed in the cavity 11, and the rotating direction of the marking piece 2 is consistent with that of the sleeve 1, and the marking piece 2 can rotate relative to the sleeve 1. In order to realize automatic marking, the present scheme utilizes the principle of inertia, the rotating part is rotatably installed in the cavity 11 through the bearing 3, when the sleeve 1 rotates, due to the small friction of the bearing 3 and the inertial effect of the marking piece 2, the marking piece 2 will rotate relative to the sleeve 1. After the sleeve 1 is rotated, the marking piece 2 will also leave a circular mark on the bolt after one rotation, and the circular mark can be used to identify that the bolt has been tightened. However, in order to identify that the relative rotation between the marking piece 2 and the sleeve 1 has indeed occurred, the cross section of the marking piece 2 at the position where the marking piece 2 is in contact with the bolt cannot be circular, and the cross section of the marking piece 2 can be rectangular, triangular, etc.

[0031] The marking piece 2 is generally provided as a pen core, in order to make the marking piece 2 last longer, a pigment area 112 is arranged in the cavity 11 to supplement the ink pigment of the marking piece 2. Since the end of the cavity 11 needs to cooperate with the bolt, the pigment area 112 is arranged at the bottom of the cavity 11. In order to separate the working area 111 of the cavity 11 cooperating with the bolt and the pigment area 112, the bearing 3 is rotatably installed in the middle of the cavity 11. The bearing 3 has an inner ring and an outer ring that can rotate relative to each other, and the outer ring is fixedly connected with the inner side wall of the cavity 11. The inner ring is used for connecting with an installation assembly 4, and the installation assembly 4 is used for installing the marking piece 2. The bearing 3, the installation assembly 4 and the marking piece 2 together separate the cavity 11 into the working area 111 and the pigment area 112.

[0032] In order to ensure that the marker 2 and sleeve 1 can rotate relative to each other, the mounting assembly 4 is fixedly connected to the inner ring, and the inner ring and the outer ring of the bearing 3 can rotate relative to each other, so the marker 2 mounted on the mounting assembly 4 can also rotate relative to the sleeve 1. In order to ensure that the marker 2 can contact the bolt and mark the surface of the bolt when the marker 2 rotates. Therefore, the marker 2 needs to be movably mounted in the axial direction of the bearing 3 in the mounting assembly 4. And has an extended position close to the opening of the cavity 11 and an abutting position away from the opening of the cavity 11. When the sleeve 1 is not matched with the bolt, the marker 2 is in the extended position, and when the bolt is inserted into the cavity 11 and matched with the inner side wall of the cavity 11, the bolt will abut the marker 2 inward to the abutting position. After the bolt is assembled and separated from the cavity 11, the marker 2 returns to the extended position.

[0033] Specifically, the mounting assembly 4 includes a connecting block 41, a mounting block 42, and a spring 43 arranged between the mounting block 42 and the connecting block 41. The connecting block 41 is fixedly connected to the inner ring and has a through hole extending through the axial direction of the bearing 3, and a groove is arranged on the inner side wall of the through hole; the mounting block 42 is movably mounted in the through hole in the axial direction, and a protrusion is arranged on the outer circumferential side of the mounting block 42, the protrusion is mounted in the groove, the mounting block 42 has a mounting cavity extending through the axial direction of the bearing 3 for mounting the marker 2; and the spring 43 extends along the axial direction of the bearing 3 and is mounted in the groove, one end of the spring 43 abuts against an inner side wall of the groove away from the opening of the cavity 11, and the other end abuts against the outer side wall of the protrusion. Due to the elastic force of the spring 43, the mounting block 42 is located in the extended position and is in a normal state, and when the bolt is inserted into the cavity 11, the mounting block 42 moves towards the inside of the cavity 11, compressing the spring 43 to the abutting position.

[0034] In order to enable the marker 2 to form a circle on the surface of the bolt after one revolution, the common cross section of the marker 2 is a triangle, a quadrilateral, other regular polygon, or an ellipse. In addition, the mounting cavity needs to be arranged corresponding to the marker 2, so that it can be kept in a tight state during cooperation, to prevent the marker 2 from loosening and the leakage of the pigment.

[0035] In order to enable the pigment in the pigment area 112 to be marked on the bolt by the marker 2, one end of the marker 2 is arranged in the working area 111 for marking the bolt, and the other end is arranged in the pigment area 112 for absorbing and replenishing the pigment.

[0036] In order to enable the external hexagonal bolt tightening automatic marking device 100 to be used repeatedly for a long time, a pouring port is arranged on one side wall of the sleeve 1 to communicate with the pigment area 112, and when the pigment in the pigment area 112 is used up, the pigment port can be opened to pour pigment into the pigment area 112.

[0037] The present scheme will also encounter two special cases in the implementation process. The first is that the bolt size and the size of the sleeve 1 are not matched, when the sleeve 1 rotates, the bolt does not rotate, but due to the inertia effect, the marker 2 will rotate, and the bolt will be marked, but at this time the bolt is not tightened. At this time, the state of the bolt does not match the circular mark. The second case is that the bolt has been in a nearly tightened state, so when the sleeve 1 rotates, the marker 2 does not rotate a complete circle to draw a complete circle. Therefore, in order to avoid the misjudgment of the above two cases, a torque sensor 5 is also provided in the working area 111 of the sleeve 1. Because of the above two cases, the torque between the sleeve 1 and the bolt does not reach the torque value when tightened. Whether there is an error marking condition can be determined by comparing the torque values.

[0038] In order to facilitate the employees to conveniently understand whether the corresponding tightening torque is reached during assembly. The outer hexagonal bolt tightening automatic marking device 100 further comprises an alarm device, and the alarm device is electrically connected with the torque sensor 5. When the employee assembles the bolt, the alarm sensor starts to alarm when the maximum torque after assembly is less than the set torque. The employee re-marks the mark on the bolt to prevent mislabeling.

[0039] Because there is a gap between the inner ring and the outer ring of the bearing 3, the pigment will flow to the working area 111 through the gap between the inner ring and the outer ring, so a sealing ring 6 is arranged on one end face of the bearing 3. The sealing ring 6 is used to block the gap between the inner ring and the outer ring to play a sealing role.

[0040] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made under the concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. An automatic marking device for tightening of an outer hexagonal bolt, characterized in that, The utility model relates to an outer hexagonal bolt tightening automatic marking device, including: A sleeve has a cavity with an open end, and the cavity is used to limit the cooperation with the bolt; A marking piece is rotatably installed in the cavity through a bearing, and is coaxially arranged with the cavity and fixedly arranged relative to the inner side wall of the bearing, one end of the marking piece is used to abut against the bolt and mark; An installation assembly is used to install the marking piece, the bearing is rotatably installed in the middle of the cavity, the bearing includes an inner ring and an outer ring that can rotate relative to each other, the outer ring is fixedly connected with the inner side wall of the cavity, the installation assembly is installed between the marking piece and the inner ring, and the bearing, the installation assembly and the marking piece jointly divide the cavity into a working area communicating with the opening and a pigment area for filling pigment, wherein the working area is used to limit the cooperation with the bolt, and the pigment area is used to fill pigment; Wherein, the marking piece rotates relative to the sleeve to form a circular mark on the surface of the bolt.

2. The automatic marking device for hexagonal bolt tightening according to claim 1, wherein The installation assembly is fixedly connected with the inner ring, and the marking piece is movably installed in the installation assembly along the rotation axis direction of the bearing.

3. The automatic marking device for hexagonal bolt tightening according to claim 2, wherein The installation assembly includes: A connecting block is fixedly connected with the inner ring and has a through hole penetrating along the rotation axis direction of the bearing, and a groove is arranged on the inner side wall of the through hole; An installation block is movably installed in the through hole along the rotation axis direction of the bearing, a protruding block is arranged on the outer circumferential side of the installation block, the protruding block is installed in the groove, the installation block has an installation cavity penetrating along the rotation axis direction of the bearing for installing the marking piece; and A spring is arranged along the rotation axis direction of the bearing and is installed in the groove, one end of the spring abuts against an inner side wall of the groove away from the opening, and the other end of the spring abuts against the outer side wall of the protruding block.

4. The automatic marking device for hexagonal bolt tightening according to claim 3, wherein The cross section of the marking piece is any one of a triangle, a quadrilateral and an ellipse, wherein the installation cavity is correspondingly arranged with the marking piece.

5. The automatic marking device for hexagonal bolt tightening according to claim 1, wherein One end of the marking piece is arranged in the working area, and the other end is arranged in the pigment area.

6. The automatic marking device for hexagonal bolt tightening according to claim 5, wherein A side wall of the sleeve is provided with a pouring port, and the pouring port communicates with the pigment area.

7. The automatic marking device for hexagonal bolt tightening according to claim 1, wherein The outer hexagonal bolt tightening automatic marking device further includes a torque sensor, and the torque sensor is installed in the working area.

8. The automatic marking device for hexagonal bolt tightening according to claim 7, wherein The outer hexagonal bolt tightening automatic marking device further includes an alarm device, and the alarm device is electrically connected with the torque sensor.

9. The automatic marking device for hexagonal bolt tightening according to claim 1, wherein The outer hexagonal bolt tightening automatic marking device further includes a sealing ring, and the sealing ring is fixedly arranged at one end of the bearing.

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