A robotic automatic quick change socket device

Abstract

The application relates to a robot automatic quick-change screwing sleeve device, and relates to the field of screwing assembly technology, which comprises a fixing assembly and a sleeve assembly, the fixing assembly is coaxially arranged on a screwing shaft, the fixing assembly comprises a piston rod, a piston cover and a piston outer sleeve, the piston rod is coaxially fixed at the bottom of a screwing shaft mounting seat, the piston cover is bolted and fixed at the top of the piston outer sleeve, the piston rod and the piston outer sleeve are coaxially and slidingly arranged outside the piston rod, sealing structures are arranged between the piston rod and the piston cover and the piston outer sleeve, a first joint is connected to the outer side wall of the piston cover, and a second joint is connected to the outer side wall of the piston outer sleeve; a plurality of installation holes are uniformly arranged on the lower section of the piston rod along the circumferential side, a steel ball is arranged in each installation hole, and the bottom of the piston outer sleeve is provided with a first ring groove and a second ring groove; the sleeve assembly comprises a self-locking sleeve, and a locking ring groove matched with the steel ball is arranged on the outer side of the self-locking sleeve. The application can improve the efficiency and success rate of replacing the sleeve of the screwing shaft.

Description

Technical Field

[0001] This application relates to the field of tightening and assembly technology, and in particular to a robotic automatic quick-change tightening sleeve device. Background Technology

[0002] In the field of automated assembly lines, tightening processes account for approximately 65%. Among these, the issue of how to quickly, conveniently, and efficiently replace sleeves in flexible tightening systems is a key research focus for various manufacturers.

[0003] In the existing technology, the structure of automatic sleeve changers from common equipment manufacturers mostly imitates the characteristics of manual change. They use a starting gripper to grab the sleeve to be replaced, move the tightening shaft above the sleeve to be replaced, and rotate the tightening shaft to perform tenon nut recognition. However, this method causes greater wear on the gripper, the nut recognition time affects the replacement efficiency, and there are also cases where nut recognition failure leads to sleeve replacement failure. There is room for improvement. Utility Model Content

[0004] In order to eliminate the cap identification step when changing sleeves and improve the efficiency and success rate of sleeve changing, this application provides a robotic automatic quick-change tightening sleeve device.

[0005] The robotic automatic quick-change tightening sleeve device provided in this application adopts the following technical solution: A robotic automatic quick-change tightening sleeve device includes a fixing component and a sleeve component. The fixing component is coaxially mounted on a tightening shaft. The fixing component includes a piston rod, a piston cover, and a piston outer sleeve. The piston rod is coaxially fixed below a tightening shaft mounting base. The piston cover is bolted to the top of the piston outer sleeve. The piston rod and piston outer sleeve are coaxially slidably disposed on the outer side wall of the piston rod. A sealing structure is provided between the piston rod, the piston cover, and the piston outer sleeve. A first connector is connected to the outer side wall of the piston cover, and a second connector is connected to the outer side wall of the piston outer sleeve. The lower section of the piston rod has several mounting holes evenly distributed around its periphery. Each mounting hole contains a steel ball. The bottom of the piston sleeve has a first annular groove and a second annular groove. The first annular groove is located above the second annular groove, and the inner diameter of the first annular groove is smaller than the inner diameter of the second annular groove. The sleeve assembly includes a self-locking sleeve, and the outer side of the self-locking sleeve has a locking ring groove that cooperates with the steel ball.

[0006] By adopting the above technical solution, when the sleeve needs to be replaced, the robot places the used sleeve on the workstation, the second connector is vented, and the piston outer sleeve and piston cover slide upward, allowing the steel ball to be located in the second annular groove. At this time, the side of the steel ball away from the locking annular groove is no longer restricted. The robot pulls up the tightening gun, which separates the tightening shaft of the tightening gun from the extension rod in the sleeve assembly. When the robot extends the tightening shaft of the tightening gun into the piston rod and connects the tightening shaft to the extension rod, the first connector is vented, causing the piston cover and piston rod to slide downward. The side of the steel ball away from the locking annular groove is restricted by the first annular groove, and the steel ball can fix the position of the sleeve assembly. The robot can then pull up the tightening gun to replace the sleeve assembly.

[0007] Preferably, the bottom inner wall of the piston sleeve is provided with a transition slope, the transition slope is located between the first annular groove and the second annular groove, and the transition slope slopes outward in a direction from top to bottom.

[0008] By adopting the above technical solution and setting the transition slope, the smoothness of the sliding motion can be improved during the up-and-down sliding of the piston jacket.

[0009] Preferably, a polyurethane gasket is installed between the piston cap and the piston outer sleeve.

[0010] By adopting the above technical solution, the polyurethane gasket is elastic and can be tightly installed between the piston cover and the piston outer sleeve, thereby improving the sealing performance of the connection between the piston cover and the piston outer sleeve.

[0011] Preferably, the sealing structure includes a first sealing ring, a second sealing ring, and a third sealing ring, and the inner sidewall of the piston cover is provided with a third annular groove, and the first sealing ring is installed in the third annular groove; Two protruding rings are integrally formed on the outer wall of the piston rod, and a fourth annular groove is formed between the two protruding rings. The second sealing ring is installed in the fourth annular groove. The inner wall of the piston sleeve is provided with a fifth annular groove, the third sealing ring is installed in the fifth annular groove, and the second sealing ring is located between the first sealing ring and the third sealing ring.

[0012] By adopting the above technical solution, the first sealing ring, the second sealing ring, and the third sealing ring can achieve the sealing effect between the piston rod and the piston cover and piston outer sleeve, and the second sealing ring can separate the chamber connected by the first joint and the chamber connected by the second joint.

[0013] Preferably, the inner wall of the piston sleeve is provided with a limiting platform, and both of the convex rings are located between the piston cover and the limiting platform.

[0014] By adopting the above technical solution, the maximum sliding distance of the piston outer sleeve can be limited by the limiting platform and the piston cover.

[0015] In summary, the robotic automatic quick-change tightening sleeve device of this application has at least one of the following beneficial technical effects: 1. When the sleeve needs to be replaced, the robot places the used sleeve on the workstation, the second connector is vented, and the piston outer sleeve and piston cover slide upward, allowing the steel ball to be located in the second annular groove. At this time, the side of the steel ball away from the locking annular groove is no longer restricted. The robot pulls up the tightening gun, which separates the tightening shaft of the tightening gun from the extension rod in the sleeve assembly. When the robot extends the tightening shaft of the tightening gun into the piston rod and connects the tightening shaft to the extension rod, the first connector is vented, causing the piston cover and piston rod to slide downward. The side of the steel ball away from the locking annular groove is restricted by the first annular groove, and the steel ball can fix the position of the sleeve assembly. The robot pulls up the tightening gun to replace the sleeve assembly. 2. The maximum sliding distance of the piston sleeve can be limited by the limiting platform and the piston cover. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the overall structure of the quick-change tightening sleeve device in an embodiment of this application.

[0017] Figure 2 This is a schematic diagram illustrating the internal structure of the quick-change tightening sleeve device according to an embodiment of this application.

[0018] Figure 3 yes Figure 2 The enlarged diagram at point A is mainly used to show the connection relationship between the fixed component and the sleeve component.

[0019] Explanation of reference numerals in the attached drawings: 1. Fixing assembly; 11. Piston rod; 111. Mounting hole; 112. Steel ball; 113. Convex ring; 114. Fourth annular groove; 12. Piston cap; 121. Third annular groove; 13. Piston outer sleeve; 131. First annular groove; 132. Second annular groove; 133. Transition slope; 134. Fifth annular groove; 135. Limiting platform; 14. First connector; 15. Second connector; 2. Sleeve assembly; 21. Self-locking sleeve; 22. Locking annular groove; 23. Extension rod; 3. Tightening shaft; 4. Sealing structure; 41. First sealing ring; 42. Second sealing ring; 43. Third sealing ring; 5. Polyurethane gasket. Detailed Implementation

[0020] The following combination Figures 1-3 This application will be described in further detail.

[0021] Example: This application discloses a robotic automatic quick-change tightening sleeve device. (Refer to...) Figures 1-3It mainly includes a fixing component 1 and a sleeve component 2. The fixing component 1 is coaxially mounted on the tightening shaft 3. The fixing component 1 includes a piston rod 11, a piston cover 12 and a piston outer sleeve 13. The piston rod 11 is coaxially fixed below the mounting base of the tightening shaft 3. The piston cover 12 is bolted to the top of the piston outer sleeve 13. The piston rod 11 and the piston outer sleeve 13 are coaxially slidably disposed on the outer side wall of the piston rod 11. A sealing structure 4 is provided between the piston rod 11, the piston cover 12 and the piston outer sleeve 13. A first connector 14 is connected to the outer side wall of the piston cover 12 and a second connector 15 is connected to the outer side wall of the piston outer sleeve 13.

[0022] The lower section of the piston rod 11 has several mounting holes 111 evenly distributed around its periphery. Each mounting hole 111 contains a steel ball 112. The bottom of the piston outer sleeve 13 has a first annular groove 131 and a second annular groove 132. The first annular groove 131 is located above the second annular groove 132, and the inner diameter of the first annular groove 131 is smaller than the inner diameter of the second annular groove 132. The sleeve assembly 2 includes a self-locking sleeve 21. The outer side of the self-locking sleeve 21 has a locking annular groove 22 that cooperates with the steel ball 112.

[0023] When the sleeve needs to be replaced, the robot places the used sleeve on the workstation, the second connector 15 is vented, and the piston outer sleeve 13 and piston cover 12 slide upward, allowing the steel ball 112 to be located in the second annular groove 132. At this time, the side of the steel ball 112 away from the locking annular groove 22 is no longer restricted. The robot pulls up the tightening gun, which separates the tightening shaft 3 of the tightening gun from the extension rod 23 in the sleeve assembly 2. When the robot inserts the tightening shaft 3 of the tightening gun into the piston rod 11 and connects the tightening shaft 3 with the extension rod 23, the first connector 14 is vented, allowing the piston cover 12 and piston rod 11 to slide downward. The side of the steel ball 112 away from the locking annular groove 22 is restricted by the first annular groove 131. The steel ball 112 can fix the position of the sleeve assembly 2. The robot can then pull up the tightening gun to replace the sleeve assembly 2.

[0024] The piston sleeve 13 has a transition slope 133 on its bottom inner wall. The transition slope 133 is located between the first annular groove 131 and the second annular groove 132, and the transition slope 133 slopes outward from top to bottom. The transition slope 133 improves the smoothness of the sliding motion during the up-and-down sliding of the piston sleeve 13.

[0025] Reference Figure 2 and Figure 3 A polyurethane gasket 5 is installed between the piston cover 12 and the piston outer sleeve 13. Because the polyurethane gasket 5 is elastic, it can be tightly installed between the piston cover 12 and the piston outer sleeve 13, thereby improving the sealing performance of the connection between the piston cover 12 and the piston outer sleeve 13.

[0026] Reference Figure 2 and Figure 3The sealing structure 4 includes a first sealing ring 41, a second sealing ring 42, and a third sealing ring 43. The inner wall of the piston cover 12 has a third annular groove 121, and the first sealing ring 41 is installed in the third annular groove 121. Two protruding rings 113 are integrally formed on the outer wall of the piston rod 11, and a fourth annular groove 114 is formed between the two protruding rings 113. The second sealing ring 42 is installed in the fourth annular groove 114. The inner wall of the piston sleeve 13 has a fifth annular groove 134, and the third sealing ring 43 is installed in the fifth annular groove 134. The second sealing ring 42 is located between the first sealing ring 41 and the third sealing ring 43.

[0027] The first sealing ring 41, the second sealing ring 42, and the third sealing ring 43 can achieve a sealing effect between the piston rod 11 and the piston cover 12 and the piston outer sleeve 13, and the second sealing ring 42 can separate the chamber connected to the first connector 14 and the chamber connected to the second connector 15.

[0028] Furthermore, it should be noted that in this embodiment, the first sealing ring 41, the second sealing ring 42, and the third sealing ring 43 are all rotary sealing Glyd rings. In some other embodiments, other sealing rings may be used depending on the actual needs of use, which will not be limited or elaborated here.

[0029] Reference Figure 3 The inner wall of the piston sleeve 13 is provided with a limiting platform 135, and both convex rings are located between the piston cap 12 and the limiting platform 135. The limiting platform 135 and the piston cap 12 can limit the maximum sliding distance of the piston sleeve 13.

[0030] The implementation principle of the automatic quick-change tightening sleeve device of this application embodiment is as follows: When the sleeve needs to be replaced, the robot places the used sleeve on the workstation, the second connector 15 is vented, the piston outer sleeve 13 and the piston cover 12 slide upward, so that the steel ball 112 is located in the second annular groove 132. At this time, the side of the steel ball 112 away from the locking annular groove 22 is no longer restricted. The robot pulls up the tightening gun, so that the tightening shaft 3 of the tightening gun is separated from the extension rod 23 in the sleeve assembly 2. When the robot inserts the tightening shaft 3 of the tightening gun into the piston rod 11 and connects the tightening shaft 3 with the extension rod 23, the first connector 14 is vented, so that the piston cover 12 and the piston rod 11 slide downward. The side of the steel ball 112 away from the locking annular groove 22 is restricted by the first annular groove 131. The position of the sleeve assembly 2 can be fixed by the steel ball 112. The robot can replace the sleeve assembly 2 by pulling up the tightening gun.

[0031] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A robotic automatic quick-change tightening sleeve device, characterized in that, The assembly includes a fixing component (1) and a sleeve component (2). The fixing component (1) is coaxially mounted on a tightening shaft (3). The fixing component (1) includes a piston rod (11), a piston cover (12), and a piston outer sleeve (13). The piston rod (11) is coaxially fixed below the mounting base of the tightening shaft (3). The piston cover (12) is bolted to the top of the piston outer sleeve (13). The piston rod (11) and the piston outer sleeve (13) are coaxially slidably disposed on the outer side wall of the piston rod (11). A sealing structure (4) is provided between the piston rod (11), the piston cover (12), and the piston outer sleeve (13). A first connector (14) is connected to the outer side wall of the piston cover (12), and a second connector (15) is connected to the outer side wall of the piston outer sleeve (13). The lower section of the piston rod (11) is provided with a plurality of mounting holes (111) evenly distributed around its periphery. Each mounting hole (111) is filled with a steel ball (112). The bottom of the piston sleeve (13) is provided with a first annular groove (131) and a second annular groove (132). The first annular groove (131) is located above the second annular groove (132), and the inner diameter of the first annular groove (131) is smaller than the inner diameter of the second annular groove (132). The sleeve assembly (2) includes a self-locking sleeve (21), and the outer side of the self-locking sleeve (21) is provided with a locking ring groove (22) that cooperates with the steel ball (112).

2. The robotic automatic quick-change tightening sleeve device according to claim 1, characterized in that, The piston jacket (13) has a transition slope (133) on its bottom inner wall. The transition slope (133) is located between the first annular groove (131) and the second annular groove (132), and the transition slope (133) is inclined outward in the direction from top to bottom.

3. The robotic automatic quick-change tightening sleeve device according to claim 2, characterized in that, A polyurethane gasket (5) is installed between the piston cap (12) and the piston outer sleeve (13).

4. The robotic automatic quick-change tightening sleeve device according to claim 3, characterized in that, The sealing structure (4) includes a first sealing ring (41), a second sealing ring (42) and a third sealing ring (43). The inner sidewall of the piston cover (12) is provided with a third annular groove (121), and the first sealing ring (41) is installed in the third annular groove (121). Two protruding rings (113) are integrally formed on the outer wall of the piston rod (11), and a fourth annular groove (114) is formed between the two protruding rings (113). The second sealing ring (42) is installed in the fourth annular groove (114). The inner wall of the piston sleeve (13) is provided with a fifth annular groove (134), the third sealing ring (43) is installed in the fifth annular groove (134), and the second sealing ring (42) is located between the first sealing ring (41) and the third sealing ring (43).

5. The robotic automatic quick-change tightening sleeve device according to claim 4, characterized in that, The inner wall of the piston jacket (13) is provided with a limiting platform (135), and the two protruding rings are located between the piston cover (12) and the limiting platform (135).

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