O-ring automatic assembly mechanism

Abstract

An O-ring automatic assembly mechanism includes: an O-ring discharging table for storing O-rings, an O-ring loading assembly for removing O-rings from the O-ring discharging table, an O-ring press-fitting assembly, an O-ring shrinking assembly arranged below the O-ring press-fitting assembly, and an assembly limit component for restricting the press-fitting position of the O-ring. The O-ring press-fitting assembly includes a first press head and a second press head arranged in a ring shape. The O-ring shrinking assembly includes a first shrinking channel and a second shrinking channel arranged below the first shrinking channel. The first shrinking channel is communicated with the second shrinking channel. The radius R1 of the first shrinking channel > the distance L1 from the outer edge of the first press head to the central axis > the radius R2 of the first shrinking channel > the distance L2 from the outer edge of the second press head to the central axis. This device can reduce the deformation of the O-ring during the grasping process. During the vacuum grasping process, the vacuum valve can monitor the grasping state in real time, improving the stability and reliability of the assembly.

Description

Technical Field

[0001] The present invention relates to an automatic assembly mechanism for O-rings. Background Art

[0002] In the prior art, when installing an O-ring in the inner hole groove of the fuel injector hole of the engine cylinder head, the outer diameter of the O-ring is usually uniformly shrunk and deformed by manual assembly, and then it is pushed into the inner hole groove, and it restores its original shape at the hole groove position, thus completing the assembly process. Since the assembly position of the O-ring is usually relatively deep, a standard automatic assembly jaw for O-rings cannot be used, and the manual assembly is difficult. In addition, it will cause the O-ring to not be able to shrink and deform uniformly in the shrinkage sleeve, and manual secondary correction is still required to confirm the assembly result, resulting in low assembly efficiency. Summary of the Invention

[0003] In order to overcome the problems of difficult manual assembly and low assembly efficiency existing in the prior art, the purpose of the present invention is to provide an automatic assembly mechanism for O-rings with a relatively high degree of automation.

[0004] In order to achieve the above purpose, the present invention provides an automatic assembly mechanism for O-rings, including:

[0005] An O-ring discharging table for storing O-rings;

[0006] An O-ring loading assembly connected to the O-ring discharging table for taking the O-ring from the O-ring discharging table;

[0007] An O-ring pressing assembly, the O-ring pressing assembly includes a first pressing head and a second pressing head arranged in a ring shape;

[0008] An O-ring shrinking assembly arranged below the O-ring pressing assembly, the O-ring shrinking assembly includes a first shrinking channel and a second shrinking channel arranged below the first shrinking channel, and the first shrinking channel is communicated with the second shrinking channel; wherein, the radius R1 of the first shrinking channel > the distance L1 from the outer edge of the first pressing head to the central axis > the radius R2 of the first shrinking channel > the distance L2 from the outer edge of the second pressing head to the central axis;

[0009] An assembly limiting assembly arranged below the O-ring pressing assembly for limiting the pressing position of the O-ring.

[0010] Preferably, the first pressing head and the second pressing head are symmetrically arranged in pairs.

[0011] Preferably, the O-ring pressing and assembling component includes a center block having a center hole at the bottom; a reset component is arranged in the center hole, and after the first pressing head and the second pressing head are pressed down, the reset component abuts against the assembling limiting component through the center hole.

[0012] Preferably, the reset component includes a reset spring having a spring mounting seat and a force conversion rod connected to the reset spring. When the reset spring drives the spring mounting seat to move up and down, the force conversion rod converts the up-and-down elastic force into a thrust in the left-right direction and pushes the O-ring to restore its shape.

[0013] Preferably, the force conversion rod includes a rotating shaft, a first rotating arm and a second rotating arm respectively connected to the rotating shaft. The first rotating arm is connected to the spring mounting seat, and the second rotating arm is connected with a reset seat.

[0014] Preferably, an angle is formed between the first rotating arm and the second rotating arm.

[0015] Preferably, the top of the first shrinking channel includes a funnel-shaped O-ring receiving table.

[0016] Preferably, the assembling limiting component includes a workbench having a center hole and a ejector rod arranged in the workbench and protruding from the top of the workbench.

[0017] Preferably, the O-ring loading component includes an O-ring positioning tooling, a linear vibrating feeder connected to the O-ring positioning tooling, an O-ring grasping lifting cylinder, an O-ring grasping horizontal moving cylinder, and an O-ring detection sensor arranged below the O-ring positioning tooling.

[0018] Preferably, the O-ring discharging table is a funnel-shaped vibrating disk.

[0019] Due to the adoption of the above technical solutions, the O-ring gripper of the present device uses inner diameter to position the O-ring, and uses the vacuum suction method to adsorb and grasp the workpiece, reducing the deformation of the O-ring generated during the grasping process. During the vacuum grasping process, the vacuum valve can monitor the grasping state in real time, improving the stability and reliability of the assembly. Description of the Drawings

[0020] Fig. Figure 1 is a perspective view of the O-ring automatic assembling mechanism according to the present invention;

[0021] Fig. Figure 2 is a side view of the O-ring automatic assembling mechanism according to the present invention;

[0022] Fig. Figure 3 is a perspective view of the O-ring shrinking component of the O-ring automatic assembling mechanism according to the present invention;

[0023] Appendix Figure 4 is the front view of the O-ring pressing assembly of the O-ring automatic assembly mechanism according to the present invention;

[0024] Appendix Figure 5 is a partially enlarged schematic view of the O-ring automatic assembly mechanism according to the present invention;

[0025] Appendix Figure 6 is a schematic view of the cooperation of the O-ring pressing assembly, O-ring shrinking assembly, and assembly limit assembly of the O-ring automatic assembly mechanism according to the present invention;

[0026] Appendix Figure 7 is a cross-sectional view of the cooperation of the O-ring pressing assembly, O-ring shrinking assembly, and assembly limit assembly of the O-ring automatic assembly mechanism according to the present invention;

[0027] Appendix Figure 8 is a schematic view of the working principle of the O-ring automatic assembly mechanism according to the present invention. Detailed Embodiment

[0028] The following elaborates on the preferred embodiments of the present invention in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clearly defined.

[0029] Refer to Appendix Figure 1 to Appendix Figure 7 As shown, Appendix Figure 1 is a perspective view of the O-ring automatic assembly mechanism according to the present invention, Appendix Figure 2 is a side view of the O-ring automatic assembly mechanism according to the present invention, Appendix Figure 3 is a perspective view of the O-ring shrinking assembly of the O-ring automatic assembly mechanism according to the present invention, Appendix Figure 4 is the front view of the O-ring pressing assembly of the O-ring automatic assembly mechanism according to the present invention, Appendix Figure 5 is a partially enlarged schematic view of the O-ring automatic assembly mechanism according to the present invention, Appendix Figure 6 is a schematic view of the cooperation of the O-ring pressing assembly, O-ring shrinking assembly, and assembly limit assembly of the O-ring automatic assembly mechanism according to the present invention, Appendix Figure 7 is a cross-sectional view of the cooperation of the O-ring pressing assembly, O-ring shrinking assembly, and assembly limit assembly of the O-ring automatic assembly mechanism according to the present invention.

[0030] The O-ring automatic assembly mechanism in this embodiment includes an O-ring discharging table 2, an O-ring loading assembly 3 connected to the O-ring discharging table 2, an O-ring pressing assembly 4, an O-ring shrinking assembly 5 arranged below the O-ring pressing assembly 4, and an assembly limiting assembly 6 arranged below the O-ring pressing assembly 4. The O-ring discharging table 2 is used to store the O-ring 1. In this embodiment, the O-ring discharging table 2 is a funnel-shaped vibrating disk. The O-ring loading assembly 3 is used to take the O-ring 1 from the O-ring discharging table 2; the O-ring loading assembly 3 includes an O-ring positioning tooling 31, a linear vibrating feeder 34 connected to the O-ring positioning tooling 31, an O-ring grasping lifting cylinder 32, an O-ring grasping horizontal moving cylinder 33, and an O-ring detection sensor 35 arranged below the O-ring positioning tooling 31.

[0031] The O-ring shrinking assembly 5 includes a first shrinking channel 51 and a second shrinking channel 52 arranged below the first shrinking channel 51, and the first shrinking channel 51 is communicated with the second shrinking channel 52; wherein, the radius R1 of the first shrinking channel 51 > the distance L1 from the outer edge of the first pressing head 41 to the central axis > the radius R2 of the first shrinking channel 51 > the distance L2 from the outer edge of the second pressing head 42 to the central axis; the top of the first shrinking channel 51 includes a funnel-shaped O-ring receiving table 53.

[0032] The O-ring pressing assembly 4 includes a first pressing head 41 and a second pressing head 42 arranged in a ring shape, and a central block 43 with a central hole at the bottom; the first pressing head 41 and the second pressing head 42 are symmetrically arranged in pairs, and a reset component is arranged in the central hole. After the first pressing head 41 and the second pressing head 42 are pressed down, the reset component abuts against the assembly limiting assembly 6 through the central hole. The reset component includes a reset spring 44 with a spring mounting seat 49 and a force conversion rod 45 connected to the reset spring 44. When the reset spring 44 drives the spring mounting seat 49 to move up and down, the force conversion rod 45 converts the up and down elastic force into a thrust in the left and right directions and pushes the O-ring 1 to restore its shape. The force conversion rod 45 includes a rotating shaft, a first rotating arm 47 and a second rotating arm 46 respectively connected to the rotating shaft. The first rotating arm 47 and the second rotating arm 46 form a 90-degree angle. The first rotating arm 47 is connected to the spring mounting seat 49, and the second rotating arm 46 is connected with a reset seat 48.

[0033] The O-ring pressing assembly 4 cooperates with the assembly limiting assembly 6. The assembly limiting assembly 6 is used to limit the pressing position of the O-ring 1. The assembly limiting assembly 6 includes a workbench with a central hole and a ejector rod 61 arranged in the workbench and protruding from the top of the workbench.

[0034] The process of the O-ring being sucked by vacuum through vibratory feeding to the shrinking assembly is as follows: The O-ring is sorted and discharged by the vibratory bowl, and then fed to the O-ring positioning tooling by the linear vibratory feeder. After the O-ring arrival detection sensor detects that the O-ring has reached the positioning tooling, the O-ring grasping lifting cylinder descends, the vacuum valve opens to inhale, the O-ring gripper adsorbs the O-ring workpiece, the O-ring grasping lifting cylinder ascends, the O-ring grasping horizontal movement cylinder moves to the position of the shrinking sleeve, the O-ring grasping lifting cylinder descends, and at this time the vacuum valve starts to blow air to release the O-ring. The O-ring reaches the position of the shrinking sleeve, and then the O-ring shrinking assembly horizontally moves through the horizontal movement cylinder and the sleeve lifting cylinder carries the O-ring to be sleeved into the inner hole of the workpiece.

[0035] Appendix Figure 8 It is a schematic diagram of the working principle of the O-ring automatic assembly mechanism according to the present invention. The O-ring pressing assembly presses down to shrink and deform the O-ring. When the O-ring pressing assembly is pressed in place, it includes the following steps:

[0036] ① The limit driving cylinder of the O-ring assembly limit component ascends to the in-place position;

[0037] ② The O-ring pressing assembly is driven to descend by the guiding cylinder;

[0038] ③ The O-ring is extruded and deformed into a predetermined shape through the pilot piece and the shrinking hole;

[0039] ④ The O-ring continues to be pressed down in the predetermined shape. At this time, the lower end face of the pressing assembly contacts the lower limit component, and the lower end face stops at the assembly groove position at this time;

[0040] ⑤ The O-ring continues to be pressed down by the guiding cylinder of the pressing assembly, and the deformation space of the O-ring is further shrunk to the assembly ring position;

[0041] ⑥ The guide rod driving cylinder of the limit component extends, driving the four driving blocks in the pressing assembly to move along the outer diameter direction, and expanding the O-ring to the assembly groove position.

[0042] It can be seen that the O-ring gripper of this device uses inner diameter positioning for the O-ring and adsorbs and grasps the workpiece by using the vacuum suction method, reducing the deformation of the O-ring generated during the grasping process. During the vacuum grasping process, the vacuum valve can monitor the grasping state in real time, improving the stability and reliability of the assembly.

[0043] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention. The purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. An O-ring automatic assembly mechanism, characterized in that, Including: O An O-ring discharging table (2) for storing O-rings (1). An O-ring loading assembly (3) connected to the O-ring discharging table (2) for removing the O-rings (1) from the O-ring discharging table (2). An O-ring pressing assembly (4) including a first pressing head (41) and a second pressing head (42) arranged in a ring shape, and a central block (43) with a central hole at the bottom. The first pressing head (41) and the second pressing head (42) are symmetrically arranged in pairs, and a reset component is arranged in the central hole. An O-ring shrinking assembly (5) arranged below the O-ring pressing assembly (4), including a first shrinking channel (51) and a second shrinking channel (52) arranged below the first shrinking channel (51). The first shrinking channel (51) is communicated with the second shrinking channel (52). Wherein, the radius R1 of the first shrinking channel (51) > the distance L1 from the outer edge of the first pressing head (41) to the central axis > the radius R2 of the second shrinking channel (52) > the distance L2 from the outer edge of the second pressing head (42) to the central axis. An assembly limiting assembly (6) arranged below the O-ring pressing assembly (4), configured to limit the pressing position of the O-ring (1). When the first pressing head (41) and the second pressing head (42) are pressed down, the reset component abuts against the assembly limiting assembly (6) through the central hole.

2. The O-ring automatic assembly mechanism according to claim 1, characterized in that: The reset component includes a reset spring (44) with a spring mounting seat (49) and a force conversion rod (45) connected to the reset spring (44). When the reset spring (44) drives the spring mounting seat (49) to move up and down, the force conversion rod (45) converts the up-and-down elastic force into a left-and-right thrust to push the O-ring (1) to restore its shape.

3. The O-ring automatic assembly mechanism according to claim 2, characterized in that: The force conversion rod (45) includes a rotating shaft, a first rotating arm (47) and a second rotating arm (46) respectively connected to the rotating shaft. The first rotating arm (47) is connected to the spring mounting seat (49), and the second rotating arm (46) is connected to a reset seat (48).

4. The O-ring automatic assembly mechanism according to claim 3, characterized in that: The angle between the first rotating arm (47) and the second rotating arm (46) is 90 degrees.

5. The O-ring automatic assembly mechanism according to claim 1, characterized in that: The top of the first shrinking channel (51) includes a funnel-shaped O-ring receiving platform (53).

6. The O-ring automatic assembly mechanism according to claim 1, characterized in that: The assembly limiting assembly (6) includes a workbench with a central hole and a ejector rod (61) arranged in the workbench and protruding from the top of the workbench.

7. The O-ring automatic assembly mechanism according to claim 1, characterized in that: The O-ring loading assembly (3) includes an O-ring positioning tooling (31), a linear vibrating feeder (34) connected to the O-ring positioning tooling (31), an O-ring grasping lifting cylinder (32), an O-ring grasping horizontal moving cylinder (33), and an O-ring detection sensor (35) arranged below the O-ring positioning tooling (31).

8. The O-ring automatic assembly mechanism according to claim 1, characterized in that: The O-ring discharging table (2) described above is a funnel-shaped vibrating bowl.

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