Bolt screwing clamping jaw and assembling tool

Abstract

The bolt screwing clamping jaw comprises a clamping component, the clamping component makes intermittent contact with a workpiece, the clamping component makes contact with the workpiece to generate friction force, and the clamping component drives the workpiece to rotate; the clamping power source actively or passively drives the clamping component and the workpiece to have horizontal pressure and generate friction force; the hollow shaft rotator drives the clamping component to rotate; and the linear driver drives the hollow shaft rotator to move up and down. The bolt has the beneficial effects that the geometric axis of the cylindrical groove and the rotating axis of the cylindrical groove are not in the same straight line, so that the cylindrical groove can be in contact with the bolt when rotating by one circle, and the screwing stability is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of anchor bolt assembly, and more specifically, to a bolt screwing jaw and an assembly tooling. Background Art

[0002] The main body of an anchor bolt is composed of a screw rod, an expansion ring, a nut, and a gasket. Before leaving the factory, it will be assembled by an automatic assembly device. During the process of screwing the screw rod and the nut, a rubber column is used on-site to play the role of clamping and screwing the bolt. The screw is screwed through the screwing groove on the rubber column. However, the screwing groove coincides with the axis of the rubber column, resulting in that sometimes the bolt can be screwed and sometimes it cannot be screwed when screwing the bolt, seriously affecting the production efficiency. It is necessary to design a jaw that can stably screw the bolt. Summary of the Invention

[0003] Aiming at the above defects, the present invention provides a bolt screwing jaw and an assembly tooling to solve the above problems.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A bolt screwing jaw and an assembly tooling, including, A clamping component, the clamping component intermittently contacts the workpiece, and the contact between the clamping component and the workpiece generates frictional force, and the clamping component drives the workpiece to rotate; A clamping power source, the clamping power source actively or passively drives a horizontal pressure and generates frictional force between the clamping component and the workpiece; A hollow shaft rotator, the hollow shaft rotator drives the clamping component to rotate; A linear driver, the linear driver drives the hollow shaft rotator to move up and down.

[0005] Further, the clamping component includes a rubber column, the rubber column is fixedly arranged at the rotating end of the hollow shaft rotator, and the rotation axis of the rubber column coincides with the rotation axis of the hollow shaft rotator; a cylindrical groove is inwardly opened on the lower surface of the rubber column; The cylindrical groove is wider outside and narrower inside; The axis of the rubber column is vertical, and the geometric axis of the cylindrical groove is inclined.

[0006] Through the setting that the cylindrical groove is wider outside and narrower inside, as the cylindrical groove continuously moves down, the cylindrical groove gradually increases the pressure on the workpiece.

[0007] Further, the geometric axis of the rubber column is inclined, and the geometric axis of the cylindrical groove coincides with the geometric axis of the rubber column.

[0008] Further, the clamping power source includes the horizontal pressure generated by the eccentric rotation of the cylindrical groove in contact with the workpiece.

[0009] Further, the clamping component further includes a rotating cylinder fixedly arranged at the rotating end of the hollow shaft rotator. A first rectangular groove is provided on the side wall at the lower end of the rotating cylinder. A swing plate is hingedly installed on the side wall of the first rectangular groove. A clamping jaw is provided at the lower end of the swing plate. The swing plate rotates around the hinge point, and the movement directions of both ends of the swing plate are opposite.

[0010] The swing plate is hinged at a position slightly below the middle of the first rectangular groove. A clamping jaw is provided at the lower end of the swing plate. The swing plate is in a seesaw motion state. When the lower end of the clamping jaw approaches the workpiece, the workpiece can be clamped more stably.

[0011] Further, the clamping power source includes a telescopic air cylinder. A connecting rod is installed between the telescopic end of the telescopic air cylinder and the swing plate. Both ends of the connecting rod are respectively hinged to the telescopic end of the telescopic air cylinder and the swing plate.

[0012] When the telescopic air cylinder extends, it drives the upper end of the swing plate to move in a direction away from the axis of the rotating cylinder. Through the setting that the swing plate rotates around the hinge point, the lower end of the swing plate moves in a direction close to the axis of the rotating cylinder, achieving the purpose of actively clamping the workpiece.

[0013] Further, the clamping power source includes the centrifugal force generated by the self-rotation of the clamping component. A counterweight is installed at the upper end of the swing plate; The centrifugal force generated by the rotation of the counterweight is greater than the centrifugal force generated by the rotation of the clamping jaw; A tension spring is installed between the upper end of the swing plate and the rotating cylinder.

[0014] By controlling the rotation speed of the rotating cylinder, the clamping force of the clamping jaw can be controlled. Through the action of the tension spring, the clamping jaw can be automatically reset.

[0015] Further, there are sliding grooves on both sides of the first rectangular groove. A moving block is slidably arranged in the sliding grooves. A first threaded hole is opened at the center position of the moving block. A threaded shaft is connected in the first threaded hole. A circular groove is opened on the rotating cylinder. A dial is provided on the threaded shaft. The circular groove accommodates the dial and restricts the up and down movement of the dial. The threaded shaft is meshed with the first threaded hole; One end of the tension spring is hinged to the moving block, and the other end of the tension spring is hinged to the swing plate.

[0016] When the moving block moves upward, the pulling force of the tension spring becomes larger, which can counteract the centrifugal force generated by the rotation of the clamping jaw and make the clamping force of the clamping jaw smaller; when the moving block moves downward, the clamping force of the clamping jaw becomes larger indirectly. Through the setting of the up and down movement of the moving block, the function of adjusting the clamping force size can be realized.

[0017] Further, the distance from the hinge point of the swing plate to the upper end point is greater than the distance from the hinge point of the swing plate to the lower end point.

[0018] Further, a rubber plate is installed at the clamping end of the clamping jaw.

[0019] Further, the lower end of the rotating cylinder is in a closed state. A second threaded hole is formed in the lower surface of the rotating cylinder. A positioning screw rod is arranged in the second threaded hole, and a positioning nut is installed on the positioning screw rod.

[0020] The positioning screw rod is inserted into the second threaded hole and can rotate. Through the lower end of the positioning screw rod, the workpiece can be resisted, so that the workpiece moves downward more stably.

[0021] Further, the bolt screwing clamp jaw is installed at the working end of the assembly tooling.

[0022] The beneficial effect of the present invention is that: since the geometric axis of the cylindrical groove and the rotation axis of the cylindrical groove are not on the same straight line, the cylindrical groove can contact the bolt every time it rotates one circle, greatly improving the stability of screwing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the first embodiment of the bolt screwing clamp jaw and the assembly tooling of the present invention; Figure 2 is an enlarged schematic diagram of part A; Figure 3 is a schematic diagram of the second embodiment of the clamping power source; Figure 4 is an enlarged schematic diagram of part B; Figure 5 is a schematic diagram of the third embodiment of the clamping power source; Figure 6 is an enlarged schematic diagram of the rubber column; Figure 7 is a schematic diagram of the cylindrical groove Figure 1 ; Figure 8 is a schematic diagram of the cylindrical groove Figure 2 ; Figure 9 is an enlarged schematic diagram of the sliding groove; In the figure, 1, clamping component; 2, workpiece; 3, clamping power source; 4, hollow shaft rotator; 5, linear driver; 11, rubber column; 111, cylindrical groove; 12, rotating cylinder; 121, first rectangular groove; 122, swing plate; 123, clamp jaw; 31, telescopic cylinder; 311, connecting rod; 32, centrifugal force; 321, counterweight; 322, tension spring; 1211, sliding groove; 1212, moving block; 1213, first threaded hole; 1214, circular groove; 1215, threaded shaft; 1217, dial; 1231, rubber plate; 1201, second threaded hole; 1202, positioning screw rod; 1203, positioning nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention is made with reference to the accompanying drawings.

[0025] This application provides a bolt screwing jaw and an assembly tooling. Please refer to Figures 1 - 9 : including a clamping component 1, the clamping component 1 intermittently contacts with a workpiece 2, and when the clamping component 1 contacts with the workpiece 2, a frictional force is generated, and the clamping component 1 drives the workpiece 2 to rotate; a clamping power source 3, the clamping power source 3 actively or passively drives a horizontal pressure between the clamping component 1 and the workpiece 2 to generate a frictional force; a hollow shaft rotator 4, the hollow shaft rotator 4 drives the clamping component 1 to rotate; a linear driver 5, the linear driver 5 drives the hollow shaft rotator 4 to move up and down.

[0026] Specifically, in actual application, the linear driver 5 can drive the hollow shaft rotator 4 to reciprocate in the vertical direction. When the hollow shaft rotator 4 moves downward, it can drive the clamping component 1 and the clamping power source 3 to move downward, and at the same time drive the workpiece 2 to rotate and move downward; There are three embodiments for the clamping power source 3, and their common point is that they actively or passively drive a horizontal pressure between the clamping component 1 and the workpiece 2 to generate a frictional force; There are two embodiments for the clamping component 1. One is a traditional jaw, with stable clamping force but high cost, and the other is a rubber roller, with unstable clamping force but extremely low cost.

[0027] For the first embodiment of the clamping component 1, refer to Figure 1 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 , the clamping component 1 includes a rubber column 11, the rubber column 11 is fixedly arranged at the rotating end of the hollow shaft rotator 4, and the rotation axis of the rubber column 11 coincides with the rotation axis of the hollow shaft rotator 4; a cylindrical groove 111 is inwardly opened on the lower surface of the rubber column 11; The cylindrical groove 111 is wider outside and narrower inside; The axis of the rubber column 11 is vertical, and the geometric axis of the cylindrical groove 111 is inclined.

[0028] Specifically, in actual application, through the setting that the rotation axis of the rubber column 11 coincides with the rotation axis of the hollow shaft rotator 4, the rubber column 11 and the hollow shaft rotator 4 rotate synchronously, and their rotation axes are in a vertical state and coincide; the cylindrical groove 111 is opened on the lower surface of the rubber column 11. When the rubber column 11 moves downward, it can drive the side wall of the cylindrical groove 111 to contact with the workpiece 2; Through the setting that the cylindrical groove 111 is wider outside and narrower inside, as the cylindrical groove 111 continuously moves downward, the cylindrical groove 111 gradually increases the pressure on the workpiece 2; Such as Figure 8As shown, the rubber column 11 is in an overall vertical state. When the cylindrical groove 111 rotates, the side wall of the cylindrical groove 111 can intermittently contact the workpiece 2 to realize the screwing action on the workpiece 2.

[0029] Refer to Figure 7 , the geometric axis of the rubber column 11 is inclined, and the geometric axis of the cylindrical groove 111 coincides with the geometric axis of the rubber column 11.

[0030] Specifically in practical applications, the rubber column 11 is in an overall inclined state. When the cylindrical groove 111 rotates, the side wall of the cylindrical groove 111 can intermittently contact the workpiece 2 to realize the screwing action on the workpiece 2.

[0031] Embodiment 1 of the clamping power source 3 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 , the clamping power source 3 includes the horizontal pressure generated by the eccentric rotation of the cylindrical groove 111 in contact with the workpiece 2.

[0032] Specifically in practical applications, through the continuous rotation and downward pressure of the cylindrical groove 111, the side wall of the cylindrical groove 111 can automatically apply a horizontal pressure and a downward screwing force to the workpiece 2.

[0033] Embodiment 2 of the clamping component 1, refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the clamping component 1 further includes a rotating cylinder 12 fixed to the rotating end of the hollow shaft rotator 4. A first rectangular groove 121 is provided on the side wall at the lower end of the rotating cylinder 12. A swing plate 122 is hingedly installed on the side wall of the first rectangular groove 121. A clamping jaw 123 is provided at the lower end of the swing plate 122. The swing plate 122 rotates around the hinge point, and the movement directions of both ends of the swing plate 122 are opposite.

[0034] Specifically in practical applications, the hollow shaft rotator 4 can move up and down. At the same time, the rotation of the hollow shaft rotator 4 drives the rotating cylinder 12 to rotate. The swing plate 122 is hinged at a position slightly below the middle of the first rectangular groove 121. A clamping jaw 123 is provided at the lower end of the swing plate 122. The swing plate 122 is in a seesaw motion state. When the lower end of the clamping jaw 123 approaches the workpiece 2, the workpiece 2 can be clamped.

[0035] Embodiment 2 of the clamping power source 3, refer to Figure 1 and Figure 2 , the clamping power source 3 includes a telescopic cylinder 31. A connecting rod 311 is installed between the telescopic end of the telescopic cylinder 31 and the swing plate 122. Both ends of the connecting rod 311 are respectively hinged to the telescopic end of the telescopic cylinder 31 and the swing plate 122.

[0036] Specifically in actual applications, when the telescopic cylinder 31 is extended, it drives the upper end of the swing plate 122 to move in a direction away from the axis of the rotating drum 12. By setting the swing plate 122 to rotate around the hinge point, the lower end of the swing plate 122 moves in a direction close to the axis of the rotating drum 12, thereby achieving the purpose of actively clamping the workpiece 2.

[0037] The third embodiment of the clamping power source 3, referring to Figure 2 and Figure 3 , the clamping power source 3 includes a centrifugal force 32 generated by the rotation of the clamping component 1, and a counterweight block 321 is installed on the upper end of the swing plate 122; The centrifugal force generated by the rotation of the counterweight 321 is greater than the centrifugal force generated by the rotation of the clamping jaw 123; A tension spring 322 is installed between the upper end of the swing plate 122 and the drum 12 .

[0038] Specifically in practical applications, through the action of the counterweight block 321, when the rotating drum 12 drives the counterweight block 321 to rotate, the centrifugal force at one end of the counterweight block 321 is much greater than the centrifugal force generated at the lower end of the swing plate 122, and the lower end of the swing plate 122 moves toward the axis of the rotating drum 12, thereby achieving the purpose of clamping; By controlling the rotation speed of the drum 12 , the clamping force of the clamping jaws 123 can be controlled, and the clamping jaws 123 can be automatically reset through the action of the tension spring 322 .

[0039] Reference Figure 2 , Figure 3 and Figure 9 , there are two sides of the first rectangular groove 121, a moving block 1212 is slidably arranged in the slide groove 1211, a first threaded hole 1213 is opened at the center of the moving block 1212, a threaded shaft 1215 is connected to the first threaded hole 1213, a circular groove 1214 is opened on the rotating drum 12, a thumbwheel 1217 is arranged on the threaded shaft 1215, the circular groove 1214 accommodates the thumbwheel 1217 and limits the thumbwheel 1217 from moving up and down, and the threaded shaft 1215 is engaged with the first threaded hole 1213; One end of the tension spring 322 is hinged to the moving block 1212 , and the other end of the tension spring 322 is hinged to the swing plate 122 .

[0040] Specifically, in practical applications, manually rotating the dial wheel 1217 can drive the threaded shaft 1215 to rotate, and the threaded shaft 1215 can drive the moving block 1212 to move in the vertical direction. The first rectangular groove 121 allows the moving block 1212 to move stably, and the circular groove 1214 accommodates the dial wheel 1217 and limits the upward and downward movement of the dial wheel 1217. One end of the tension spring 322 is hinged to the moving block 1212; When the moving block 1212 moves upward, the tension of the tension spring 322 increases, which can counteract the centrifugal force generated by the rotation of the clamping jaw 123, so that the clamping force of the clamping jaw 123 decreases; when the moving block 1212 moves downward, the clamping force of the clamping jaw 123 is indirectly increased. By setting the moving block 1212 to move up and down, the function of adjusting the clamping force can be realized.

[0041] Reference Figure 3 and Figure 4 , the distance from the hinge point of the swing plate 122 to the upper end point is greater than the distance from the hinge point of the swing plate 122 to the lower end point.

[0042] Specifically in practical applications, by setting the distance from the hinge point to the upper end point of the swing plate 122 to be greater than the distance from the hinge point to the lower end point of the swing plate 122, the clamping jaws 123 can clamp the workpiece 2 more stably.

[0043] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A rubber plate 1231 is installed at the clamping end of the clamping claw 123.

[0044] Specifically in practical applications, the provision of the rubber plate 1231 facilitates increasing the friction between the clamping jaw 123 and the workpiece 2 .

[0045] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The lower end of the rotating drum 12 is in a closed state, and a second threaded hole 1201 is opened on the lower surface of the rotating drum 12. A positioning screw 1202 is arranged in the second threaded hole 1201, and a positioning nut 1203 is installed on the positioning screw 1202.

[0046] Specifically in practical applications, the positioning screw 1202 is inserted into the second threaded hole 1201 and can rotate. The lower end of the positioning screw 1202 can support the workpiece 2, so that the workpiece 2 can move downward more stably. By tightening the positioning nut 1203, the positioning screw 1202 can be prevented from moving by itself; the bolt tightening clamp is installed at the working end of the assembly tooling.

Claims

1. Bolt screwing jaw, characterized in that, including, a clamping member (1) that intermittently contacts a workpiece (2), the clamping member (1) generates a frictional force when contacting the workpiece (2), and the clamping member (1) drives the workpiece (2) to rotate; a clamping power source (3) that actively or passively drives a horizontal pressure between the clamping member (1) and the workpiece (2) to generate a frictional force; a hollow shaft rotator (4) that drives the clamping member (1) to rotate; a linear driver (5) that drives the hollow shaft rotator (4) to move up and down.

2. The bolt screwing jaw according to claim 1, wherein, The clamping member (1) includes rubber columns (11), the rubber columns (11) are fixedly arranged at the rotating end of the hollow shaft rotator (4), and the rotation axis of the rubber columns (11) coincides with the rotation axis of the hollow shaft rotator (4); a cylindrical groove (111) is inwardly opened on the lower surface of the rubber column (11); The cylindrical groove (111) is wider outside and narrower inside; The rotation axis of the rubber column (11) is vertical, and the geometric axis of the cylindrical groove (111) is inclined.

3. The bolt screwing jaw according to claim 2, characterized in that, The geometric axis of the rubber column (11) is inclined, and the geometric axis of the cylindrical groove (111) coincides with the geometric axis of the rubber column (11).

4. The bolt screwing jaw according to claim 2 or 3, characterized in that, The clamping power source (3) includes a horizontal pressure generated by the eccentric rotation of the cylindrical groove (111) in contact with the workpiece (2).

5. The bolt screwing jaw according to claim 1, characterized in that, The clamping member (1) further includes a rotating cylinder (12) fixedly arranged at the rotating end of the hollow shaft rotator (4), a first rectangular groove (121) is provided on the side wall of the lower end of the rotating cylinder (12), a swing plate (122) is hingedly installed on the side wall of the first rectangular groove (121), a clamping jaw (123) is provided at the lower end of the swing plate (122), the swing plate (122) rotates around the hinge point, and the moving directions of both ends of the swing plate (122) are opposite.

6. The bolt screwing jaw according to claim 5, wherein, The clamping power source (3) includes a telescopic cylinder (31), a connecting rod (311) is installed between the telescopic end of the telescopic cylinder (31) and the swing plate (122), and both ends of the connecting rod (311) are respectively hinged to the telescopic end of the telescopic cylinder (31) and the swing plate (122).

7. The bolt screwing jaw according to claim 5, characterized in that, The clamping power source (3) includes a centrifugal force (32) generated by the self-rotation of the clamping member (1), and a counterweight (321) is installed at the upper end of the swing plate (122); The centrifugal force generated by the rotation of the counterweight (321) is greater than the centrifugal force generated by the rotation of the clamping jaw (123); A tension spring (322) is installed between the upper end of the swing plate (122) and the rotating cylinder (12).

8. The bolt screwing jaw according to claim 7, wherein There are sliding grooves (1211) on both sides of the first rectangular groove (121), a moving block (1212) is slidably arranged in the sliding grooves (1211), a first threaded hole (1213) is opened at the central position of the moving block (1212), a threaded shaft (1215) is connected in the first threaded hole (1213), a circular groove (1214) is opened on the rotating cylinder (12), a dial (1217) is provided on the threaded shaft (1215), the circular groove (1214) accommodates the dial (1217) and restricts the up and down movement of the dial (1217), and the threaded shaft (1215) meshes with the first threaded hole (1213); One end of the tension spring (322) is hinged to the moving block (1212), and the other end of the tension spring (322) is hinged to the swing plate (122).

9. The bolt screwing jaw according to any one of claims 6-8, characterized in that, The distance from the hinge point of the swing plate (122) to the upper end point is greater than the distance from the hinge point of the swing plate (122) to the lower end point.

10. The bolt screwing jaw according to claim 5, characterized in that, A rubber plate (1231) is installed at the clamping end of the jaw (123).

11. The bolt screwing jaw according to claim 5, characterized in that, The lower end of the rotating cylinder (12) is in a closed state. A second threaded hole (1201) is formed in the lower surface of the rotating cylinder (12). A positioning screw (1202) is provided in the second threaded hole (1201), and a positioning nut (1203) is installed on the positioning screw (1202).

12. Assembly tooling, characterized in that, It includes the bolt-twisting jaw according to any one of claims 1-11, and the bolt-twisting jaw is installed at the working end of the assembly tooling.

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