Sealing ring press-fitting device of automatic assembly line of oil cylinder assembly

Abstract

The utility model discloses a seal ring press-fitting device of oil cylinder assembly automatic assembly line, including assembly table, fixed link and press-fitting subassembly, press-fitting subassembly includes first telescopic link, first pressure plate, second telescopic link and lift plate, the first telescopic link is fixed on the upper plate of connecting plate, and the bottom of first telescopic link is fixed with the first pressure plate, the second telescopic link is fixed with the lift plate. A second telescopic rod is installed on a lower plate of the connecting plate, and a lifting plate is fixed to the bottom of the second telescopic rod. The press-fitting assembly is arranged, the first telescopic rod and the first pressing plate move downwards to push the sealing ring to the press-fitting position, and the sealing ring is pre-pressed; and then through downward pressing of a second telescopic rod, a lifting plate and a second pressing plate, the sealing ring is pressed to be shaped in a corresponding sealing groove, and the situation that the edge of the sealing ring tilts is avoided.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder assembly technology, specifically to a sealing ring press-fitting device for an automatic hydraulic cylinder assembly line. Background Technology

[0002] The hydraulic cylinder assembly is a core component of a hydraulic system, consisting of a hydraulic cylinder and its supporting components. It is primarily used to convert hydraulic energy into mechanical energy to achieve linear or rotary motion. During the assembly of the hydraulic cylinder assembly, sealing rings need to be pressed in, thus requiring a corresponding press-fitting device.

[0003] Patent CN207906308U discloses a sealing ring pressing device. However, similar sealing ring pressing devices currently have the following shortcomings: uneven pressing is easily caused by using only one pressing method during the pressing process. Therefore, this paper studies and improves upon the existing structure and its deficiencies, proposing a sealing ring pressing device for an automated assembly line of hydraulic cylinder assemblies. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a sealing ring press-fitting device for an automatic assembly line of hydraulic cylinder assemblies.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sealing ring pressing device for an automatic assembly line of hydraulic cylinder assembly, comprising an assembly table, a fixing rod, and a pressing assembly. A rear plate is fixed to the upper side of the assembly table, and a top plate is fixed to the top of the rear plate. A cylinder is installed in the middle of the top plate, and a piston rod penetrating the top plate is provided on the lower side of the cylinder. A fixing rod is installed on the lower side of the piston rod, and a connecting plate is connected to the outer side of the fixing rod. The connecting plate has a "U" shaped structure, and an outer guide frame is fixed to the lower end of the connecting plate. A pressing assembly is installed on the connecting plate. The pressing assembly includes a first telescopic rod, a first pressure plate, a second telescopic rod, and a lifting plate. The first telescopic rod is fixed to the upper plate of the connecting plate, and a first pressure plate is fixed to the bottom of the first telescopic rod. The second telescopic rod is installed on the lower plate of the connecting plate, and a lifting plate is fixed to the bottom of the second telescopic rod.

[0006] Furthermore, a fixing plate is connected to the bottom of the fixing rod, and a guide rod is integrally fixed to the outer side of the fixing plate.

[0007] Furthermore, the outer guide frame is annular, and the outer guide frame and the guide rod are concentric circles, with the outer guide frame located outside the guide rod.

[0008] Furthermore, a guide groove is provided between the outer guide frame and the guide rod, and the guide groove is a hollow annular structure with openings on the upper and lower sides.

[0009] Furthermore, the first pressure plate has an annular structure and is located inside the guide groove, and the size of the first pressure plate matches the size of the guide groove.

[0010] Furthermore, the lifting plate has an L-shaped cross-section and is located outside the outer guide frame.

[0011] Furthermore, the pressing assembly also includes a fixed frame, a micro motor, and a bidirectional lead screw. A fixed frame is welded to one side of the lifting plate, and a micro motor is installed on the outer side of the fixed frame. A bidirectional lead screw is rotatably installed on the inner side of the fixed frame.

[0012] Furthermore, the press-fit assembly also includes a movable sleeve and a second pressure plate. Two movable sleeves are symmetrically sleeved on the outer side of the bidirectional lead screw, and the movable sleeves are slidably connected to the inner wall of the fixed frame. A second pressure plate is fixed on one side of the movable sleeve, and the second pressure plate has a semi-circular arc structure.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Set up a pressing assembly. The sealing ring is pushed to the pressing position by the first telescopic rod and the first pressure plate moving down to pre-press the sealing ring. Then, the sealing ring is pressed down by the second telescopic rod, the lifting plate and the second pressure plate to press it into shape in the corresponding sealing groove. The size of the second pressure plate is larger than that of the first pressure plate so that the contact area is larger to facilitate full pressing and avoid the sealing ring from lifting at the edge.

[0015] 2. A guide groove is provided. The cylinder assembly to be press-fitted is placed on the upper side of the assembly table. The cylinder and piston rod can easily drive the lifting and lowering of the fixed rod, fixed plate, guide rod and outer guide frame, so as to lower it to the sealing ring pressing position of the cylinder assembly. The outer guide frame and guide rod are connected by the fixed rod, fixed plate and connecting plate to form an integral structure. The guide groove with a hollow annular structure between the outer guide frame and guide rod is used to set the sealing ring to be assembled and play a guiding role. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a front sectional view of the press-fit assembly of this utility model;

[0018] Figure 3 This is a side view of the present invention;

[0019] Figure 4 This is a schematic diagram of the combined second pressure plate of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the fixing frame of this utility model.

[0021] In the diagram: 1. Assembly table; 2. Rear plate; 3. Top plate; 4. Cylinder; 5. Piston rod; 6. Fixing rod; 7. Fixing plate; 8. Guide rod; 9. Connecting plate; 10. Outer guide frame; 11. Guide groove; 12. Press-fit assembly; 1201. First telescopic rod; 1202. First pressure plate; 1203. Second telescopic rod; 1204. Lifting plate; 1205. Fixing frame; 1206. Micro motor; 1207. Two-way lead screw; 1208. Moving sleeve; 1209. Second pressure plate. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] like Figure 1-3 As shown, a sealing ring pressing device for an automatic assembly line of hydraulic cylinder assembly in this embodiment includes an assembly table 1, a fixing rod 6, and a pressing assembly 12. A rear plate 2 is fixed to the upper side of the assembly table 1, and a top plate 3 is fixed to the top of the rear plate 2. A cylinder 4 is installed in the middle of the top plate 3, and a piston rod 5 penetrating the top plate 3 is provided on the lower side of the cylinder 4. A fixing rod 6 is installed on the lower side of the piston rod 5, and a connecting plate 9 is connected to the outer side of the fixing rod 6. The connecting plate 9 has a side-placed "U"-shaped structure, and an outer guide frame 10 is fixed to the lower end of the connecting plate 9. A fixing plate 7 is connected to the bottom of the fixing rod 6, and a guide rod 8 is integrally fixed to the outer side of the fixing plate 7. The outer guide frame 10 is annular, and the outer guide frame 10 and the guide rod 8 have a concentric circular structure. The outer guide frame 10 is located outside the guide rod 8, and a guide groove 11 is provided between the outer guide frame 10 and the guide rod 8. The guide groove 11 has a hollow annular structure with openings on the upper and lower sides.

[0024] Specifically, cylinder 4 and piston rod 5 facilitate the lifting and lowering of fixed rod 6, fixed plate 7, guide rod 8 and outer guide frame 10, so as to lower the device to the pressing position of the oil cylinder assembly seal ring. The outer guide frame 10 and guide rod 8 are connected by fixed rod 6, fixed plate 7 and connecting plate 9 to form an integral structure. The guide groove 11 with a hollow annular structure between the outer guide frame 10 and guide rod 8 is used to set the seal ring to be assembled and plays a guiding role in the assembly of the seal ring.

[0025] like Figure 1 , 2As shown in Figure 4, a pressing assembly 12 is installed on the lower side of the connecting plate 9. The pressing assembly 12 includes a first telescopic rod 1201, a first pressure plate 1202, a second telescopic rod 1203, and a lifting plate 1204. The first telescopic rod 1201 is fixed to the upper plate of the connecting plate 9, and the first pressure plate 1202 is fixed to the bottom of the first telescopic rod 1201. The second telescopic rod 1203 is installed on the lower plate of the connecting plate 9, and the lifting plate 1204 is fixed to the bottom of the second telescopic rod 1203. The first pressure plate 1202 has a ring-shaped structure and is located inside the guide groove 11. The size of the first pressure plate 1202 matches the size of the guide groove 11. The lifting plate 1204 has an L-shaped cross-section and is located outside the outer guide frame 10.

[0026] like Figure 1 , 2 As shown in Figures 4 and 5, the pressing assembly 12 includes a fixed frame 1205, a micro motor 1206, and a bidirectional lead screw 1207. The fixed frame 1205 is welded to the lower side of one side of the lifting plate 1204, and the micro motor 1206 is installed on the outer side of the fixed frame 1205. The bidirectional lead screw 1207 is rotatably arranged on the inner side of the fixed frame 1205. The pressing assembly 12 also includes a movable sleeve 1208 and a second pressure plate 1209. Two movable sleeves 1208 are symmetrically sleeved on the outer side of the bidirectional lead screw 1207. The movable sleeves 1208 are slidably connected to the inner wall of the fixed frame 1205. The second pressure plate 1209 is fixed on one side of the movable sleeve 1208, and the second pressure plate 1209 has a semi-circular arc structure.

[0027] Specifically, the extension and retraction of the first telescopic rod 1201 facilitates the lifting and lowering of the first pressure plate 1202. When the first pressure plate 1202 is raised, the upper inlet of the guide groove 11 is exposed, making it convenient to insert the sealing ring. Then, the lowering of the first pressure plate 1202 can push the sealing ring in the guide groove 11 to move down and push the sealing ring to the lower pressing position. At this time, the sealing ring is disengaged from the pressing device. The pre-pressing task of the sealing ring is achieved through the above design.

[0028] When the sealing ring is being guided, the two second pressure plates 1209 are separated and located outside the outer guide frame 10, which does not affect the downward movement of the sealing ring. After the material is guided, the second telescopic rod 1203 drives the lifting plate 1204 to rise and fall, thereby driving the fixed frame 1205 to rise and fall, so that the second pressure plate 1209 moves down to the lower side of the outer guide frame 10. At this time, the micro motor 1206 drives the bidirectional lead screw 1207 to rotate, thereby driving the two moving sleeves 1208 and the two second pressure plates 1209 to move towards each other, so that the two second pressure plates 1209 merge into a complete ring structure. Then, the second telescopic rod 1203 extends again to drive the lifting plate 1204 and the second pressure plate 1209 to press down, so that the second pressure plate 1209 further presses the sealing ring into shape in the sealing groove. The size of the second pressure plate 1209 is larger than that of the first pressure plate 1202, so that its contact area is larger and it is convenient to press it in fully, avoiding the situation that the edge of the sealing ring is raised.

[0029] Working principle: In use, firstly, the cylinder assembly to be press-fitted is placed on the upper side of the assembly table 1. Then, the cylinder 4 and piston rod 5 drive the fixed rod 6, fixed plate 7, guide rod 8 and outer guide frame 10 to descend, lowering the above components to the sealing ring pressing position of the cylinder assembly. Then, the extension and retraction of the first telescopic rod 1201 drives the first pressure plate 1202 to rise, thereby exposing the inlet on the upper side of the guide groove 11, which facilitates the insertion of the sealing ring. At this time, the sealing ring to be assembled is placed in the guide groove 11. The guide groove 11 can guide the downward assembly of the sealing ring. Then, the first pressure plate 1202 descends and pushes the sealing ring in the guide groove 11 to move down, pushing the sealing ring to the lower pressing position, and the sealing ring disengages, thereby realizing the pre-pressing of the sealing ring.

[0030] During the material feeding of the sealing ring, the two second pressure plates 1209 are in a separated state and located outside the outer guide frame 10, which does not affect the downward movement of the sealing ring. After the pre-pressing is completed, the second telescopic rod 1203 drives the lifting plate 1204 to rise and fall, thereby driving the fixed frame 1205 to rise and fall, so that the second pressure plate 1209 moves down to the lower side of the outer guide frame 10. At this time, the micro motor 1206 drives the bidirectional lead screw 1207 to rotate, thereby driving the two moving sleeves 1208 and the two second pressure plates 1209 to move towards each other, so that the two second pressure plates 1209 merge into a complete ring structure. Then, the second telescopic rod 1203 extends again to drive the lifting plate 1204 and the second pressure plate 1209 to press down, thereby pressing the sealing ring into shape with the second pressure plate 1209. The size of the second pressure plate 1209 is larger than that of the first pressure plate 1202, so that the contact area is larger and it is convenient to press in fully, avoiding the situation that the edge of the sealing ring is raised. This completes the use process of the sealing ring pressing device of the automatic assembly line of the hydraulic cylinder assembly.

[0031] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A sealing ring pressing device for an automatic assembly line of hydraulic cylinder assembly, comprising an assembly table (1), a fixing rod (6), and a pressing assembly (12), characterized in that, A rear plate (2) is fixed to the upper side of the assembly table (1), and a top plate (3) is fixed to the top of the rear plate (2). A cylinder (4) is installed in the middle of the top plate (3), and a piston rod (5) penetrating the top plate (3) is provided on the lower side of the cylinder (4). A fixing rod (6) is installed on the lower side of the piston rod (5), and a connecting plate (9) is connected to the outer side of the fixing rod (6). The connecting plate (9) has a "U" shaped structure, and an outer guide frame (10) is fixed to the lower end of the connecting plate (9). An external guide frame (10) is installed on the connecting plate (9). The pressing assembly (12) includes a first telescopic rod (1201), a first pressure plate (1202), a second telescopic rod (1203), and a lifting plate (1204). The first telescopic rod (1201) is fixed to the upper plate of the connecting plate (9), and the first pressure plate (1202) is fixed to the bottom of the first telescopic rod (1201). The second telescopic rod (1203) is installed on the lower plate of the connecting plate (9), and the lifting plate (1204) is fixed to the bottom of the second telescopic rod (1203).

2. The sealing ring pressing device for an automatic assembly line of hydraulic cylinder assembly according to claim 1, characterized in that, The bottom of the fixing rod (6) is connected to a fixing plate (7), and a guide rod (8) is integrally fixed to the outside of the fixing plate (7).

3. The sealing ring pressing device for an automatic assembly line of hydraulic cylinder assembly according to claim 2, characterized in that, The outer guide frame (10) is annular, and the outer guide frame (10) and the guide rod (8) are concentric circles. The outer guide frame (10) is located outside the guide rod (8).

4. The sealing ring pressing device for an automatic assembly line of hydraulic cylinder assembly according to claim 3, characterized in that, A guide groove (11) is provided between the outer guide frame (10) and the guide rod (8), and the guide groove (11) is a hollow annular structure with openings on the upper and lower sides.

5. The sealing ring pressing device for an automatic assembly line of hydraulic cylinder assembly according to claim 4, characterized in that, The first pressure plate (1202) has an annular structure and is located inside the guide groove (11), and the size of the first pressure plate (1202) matches the size of the guide groove (11).

6. The sealing ring pressing device for an automatic assembly line of hydraulic cylinder assembly according to claim 1, characterized in that, The lifting plate (1204) has an L-shaped cross-section and is located outside the outer guide frame (10).

7. A sealing ring press-fitting device for an automatic assembly line of hydraulic cylinder assembly according to claim 5, characterized in that, The pressing assembly (12) also includes a fixed frame (1205), a micro motor (1206) and a two-way lead screw (1207). The fixed frame (1205) is welded to one side of the lifting plate (1204), and the micro motor (1206) is installed on the outside of the fixed frame (1205). The two-way lead screw (1207) is rotatably installed on the inside of the fixed frame (1205).

8. A sealing ring press-fitting device for an automatic assembly line of hydraulic cylinder assembly according to claim 7, characterized in that, The press assembly (12) further includes a movable sleeve (1208) and a second pressure plate (1209). Two movable sleeves (1208) are symmetrically sleeved on the outer side of the bidirectional lead screw (1207), and the movable sleeves (1208) are slidably connected to the inner wall of the fixed frame (1205). The second pressure plate (1209) is fixed on one side of the movable sleeve (1208), and the second pressure plate (1209) has a semi-circular arc structure.

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