A kind of automatic assembly device of micro elastic parts

Abstract

The present invention discloses an automatic assembly device for micro elastic parts, which is used to assemble the micro elastic parts on the rotating shaft of the earphone after applying oil to the micro elastic parts, and comprises an oil filling seat with a guide through hole, an oil filling device for injecting oil into the guide through hole, a jig opposite to one end of the guide through hole, and a push-in mechanism for pushing the micro elastic parts along the guide through hole to move toward the jig; when the push-in mechanism pushes the micro elastic parts to move to a preset position, the micro elastic parts leave the guide through hole and are inserted into the rotating seat carried by the jig along a first direction, and the micro elastic parts are stained with oil during the process of the micro elastic parts moving in the guide through hole. The problem of the difficulty of assembling the micro elastic parts of the earphone rotating shaft is solved.

Description

Technical Field

[0001] The invention relates to the technical field of parts assembly equipment, in particular to an automatic assembly device for micro elastic parts. Background Art

[0002] At present, the earphone shaft includes a rotating seat and a rotating body, and the rotating body is rotatably connected with the rotating seat through the rotating shaft. Figure 1 As shown, a micro elastic member 2 is often inserted into the rotating seat 1, and the micro elastic member 2 abuts against the rotating shaft (not shown in the figure), so that the rotating shaft has a damping feeling during rotation. The micro elastic member 2 is generally columnar, small in size, and elastic. During the assembly of the micro elastic member 2, on the one hand, it is difficult to grasp and position the micro elastic member, and on the other hand, the process of oiling and greasing is not easy to operate, resulting in a technical problem that the micro elastic member is difficult to assemble. Summary of the invention

[0003] In view of the above defects in the prior art, the present invention provides an automatic assembly device for micro elastic parts to solve the problem that the micro elastic parts are difficult to assemble.

[0004] The present invention is implemented by the following technical solutions:

[0005] A device for assembling a micro elastic component automatically, which is used to assemble the micro elastic component on the rotating shaft of an earphone, comprises an oil filling seat with a guide through hole, an oil filling device for injecting oil into the guide through hole, a jig opposite to one end of the guide through hole, and a pushing mechanism for pushing the micro elastic component along the guide through hole toward the jig; when the pushing mechanism pushes the micro elastic component to move to a preset position, the micro elastic component leaves the guide through hole and is inserted into the rotating seat carried by the jig along a first direction, and the micro elastic component is stained with oil during the process of the micro elastic component moving in the guide through hole.

[0006] Furthermore, one end of the guide through hole facing the jig is a first end, and the first end is configured to be able to transitionally fit with the micro elastic member.

[0007] Furthermore, an end of the guide through hole facing away from the fixture is a second end; and a radial cross-sectional area of ​​the guide through hole decreases from the second end to the first end.

[0008] Furthermore, the oil filling device includes an oil filling gun; the oil filling seat is provided with an oil filling hole which passes through the guide through hole from the inner wall of the second end; the oil filling end of the oil filling gun is connected to the oil filling hole to fill oil into the guide through hole through the oil filling hole.

[0009] Furthermore, the ejection mechanism includes an ejection pin and an ejection driving member, wherein the ejection pin is arranged at the output end of the ejection driving member, and the ejection pin is driven by the ejection driving member to enter the guide through hole forward and move out of the guide through hole backward; when the ejection pin enters the guide through hole forward, the ejection pin pushes the micro elastic member to move along the guide through hole toward the fixture.

[0010] Furthermore, the ejector pin includes an ejector pin connector connected to the output end of the ejection drive member and an ejector rod connected to the ejector pin connector, a conical section is provided at one end of the ejector rod away from the ejector pin connector, a head section is provided at the end of the conical section, a diameter of the head section is smaller than a diameter of the ejector rod, and the conical section is a conical structure that gradually shrinks toward the head section.

[0011] Furthermore, it also includes a shifting mechanism, on which the oil filling seat and the pushing mechanism are both installed, and the shifting mechanism is used to drive the pushing mechanism and the oil filling seat to shift relative to the fixture along a second direction after the micro elastic member is inserted into the rotating seat, and the second direction is perpendicular to the first direction.

[0012] Furthermore, a guide column extending toward the jig is provided on one side of the oil filling seat close to the jig, a support groove is provided on the jig for cooperating with the guide column to support the guide column, and the guide through hole penetrates the guide column along the extension direction of the guide column; when the guide column cooperates with the support groove, the guide through hole is aligned with the assembly hole of the rotating seat.

[0013] Furthermore, it also includes a clamping mechanism, which includes a pressing plate, a vertically arranged pressing rod is provided on the pressing plate, one side of the pressing plate is connected to the oil filling seat, the pressing plate is located above the fixture, and the pressing rod is used to press the rotating seat on the fixture.

[0014] Furthermore, it also includes a transverse movement mechanism, the jig is installed on the transverse movement mechanism, and the transverse movement mechanism is used to drive the jig to move to and away from the assembly position; when the jig is located at the assembly position, the jig can be opposite to one end of the guide through hole.

[0015] Compared with the prior art, the beneficial effects of the present invention include at least:

[0016] The present invention pushes the micro elastic part into the rotating seat through the pushing mechanism, and there is no need to grab the micro elastic part to assemble it to the rotating seat. The process is simple and quick, and the micro elastic part is automatically stained with oil when passing through the oil filling seat. In this way, the actions of oiling, greasing and pushing in can be completed in a one-stop and quick manner, which greatly simplifies the assembly process of the micro elastic part, reduces its assembly difficulty, and greatly improves the assembly accuracy and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the assembly of a rotating seat and a micro elastic member of the background technology;

[0018] Figure 2 is one of the schematic diagrams of the automatic assembly device for micro elastic parts according to an embodiment of the present invention;

[0019] Figure 3 It is a schematic diagram of the assembly of the oil filling seat and the oil filling device according to an embodiment of the present invention;

[0020] Figure 4 yes Figure 3 Cross-sectional view of the structure;

[0021] Figure 5 is a cross-sectional view of an oil filling seat according to an embodiment of the present invention;

[0022] Figure 6 is a schematic structural diagram of a fixture according to an embodiment of the present invention;

[0023] Figure 7 is a schematic diagram of an ejector pin according to an embodiment of the present invention;

[0024] Figure 8 is a cross-sectional view of a micro elastic component automatic assembly device according to an embodiment of the present invention;

[0025] Fig. 9 is a schematic diagram of a feeding mechanism according to an embodiment of the present invention;

[0026] Fig.10 It is a schematic diagram of the assembly of the feeding mechanism and the transfer mechanism of the embodiment of the present invention;

[0027] Fig.11 is one of the schematic diagrams of the transfer mechanism of an embodiment of the present invention;

[0028] Fig.12 Schematic diagram 2 of the transfer mechanism of the embodiment of the present invention;

[0029] Fig.13 is a schematic diagram of the cooperation between the transfer mechanism and the ejection mechanism of an embodiment of the present invention;

[0030] Fig.14 This is a second schematic diagram of the automatic assembly device for micro elastic parts according to an embodiment of the present invention;

[0031] In the figure: 1, rotating seat; 2, micro elastic member; 10, oil filling seat; 101, guide through hole; 102, oil filling hole; 103, guide column; 20, oil filling equipment; 201, oil filling cylinder; 202, oil filling pipe; 203, oil filling joint; 30, fixture; 301, support groove; 302, groove; 40, ejection mechanism; 401, ejector pin; 4010, ejector pin joint; 4011, ejector rod; 4012, tapered section; 4013, ejector head section; 402, ejection drive member; 50, displacement mechanism; 501, displacement 1. support plate; 502. shifting drive member; 60. clamping mechanism; 601. pressing plate; 602. pressing rod; 70. transverse mechanism; 80. feeding mechanism; 801. vibrating feeder; 802. dividing plate; 90. transfer mechanism; 901. transfer fixing seat; 9010. receiving trough; 9011. first guide groove; 9012. second guide groove; 902. transfer plate; 9020. transfer groove; 903. transfer drive member; 9030. screw rod; 9031. nut; 9032. connecting member; 9033. motor. DETAILED DESCRIPTION

[0032] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0033] The words expressing positions and directions described in the present invention are all explained with reference to the accompanying drawings as examples, but they can be changed as needed, and all such changes are included in the protection scope of the present invention.

[0034] like Figures 2 to 14 As shown, the present invention provides an automatic assembly device for micro elastic parts, which is used to assemble the micro elastic parts 2 on the rotating shaft of the earphone, including an oil filling seat 10 with a guide through hole 101, an oil filling device 20 for injecting oil into the guide through hole 101, a fixture 30 opposite to an end of the guide through hole 101, and a push-in mechanism 40 for pushing the micro elastic part 2 along the guide through hole 101 to move toward the fixture 30; when the push-in mechanism 40 pushes the micro elastic part 2 to move to a preset position, the micro elastic part 2 leaves the guide through hole 101 and is inserted into the rotating seat 1 carried by the fixture 30 along a first direction, and the micro elastic part 2 is stained with oil during the process of the micro elastic part 2 moving in the guide through hole 101.

[0035] In this embodiment, the rotating seat 1 is fixed on the fixture 30, and the micro elastic member 2 is positioned on the feeding side of the oil filling seat 10. During assembly, the push-in mechanism 40 pushes the micro elastic member 2 into the guide through hole 101. At the same time, the oil filling device 20 fills oil into the guide through hole 101, so that the guide through hole 101 is stained with oil. In this way, during the movement of the micro elastic member 2 in the guide through hole 101, its outer wall is stained with oil, and the oil is evenly spread on the outer wall of the micro elastic member 2 through the inner wall of the guide through hole 101. The push-in mechanism 40 pushes the micro elastic member 2 along the guide through hole 101 to the rotating seat 1 on the fixture 30. When the micro elastic member 2 moves to the preset position, the micro elastic member 2 is inserted into the assembly hole of the rotating seat 1. In this way, under the guiding effect of the guide through hole 101, the micro elastic member 2 is automatically and accurately assembled in the rotating seat 1.

[0036] Of course, in other embodiments, the micro elastic member 2 may also be pre-inserted into the guide through hole 101. For example, the micro elastic member 2 may be manually clamped and inserted into the guide through hole 101, or the micro elastic member 2 may be inserted into the guide through hole 101 using automated equipment. Thereafter, the pushing mechanism 40 pushes the micro elastic member 2 to move in the guide through hole 101.

[0037] In this embodiment, under the guidance of the guide through hole 101, the micro elastic member 2 is precisely pushed into the rotating seat 1 through the push-in mechanism 40, and there is no need to grab the micro elastic member 2 to assemble it to the rotating seat 1. The process is simple and fast, and the micro elastic member 2 is automatically and evenly stained with oil during the process of passing through the oiling seat 10, so that the actions of oiling, oiling and pushing can be completed in one stop and quickly, integrating the oiling process, oiling process and assembly process into one process, which greatly simplifies the assembly process of the micro elastic member 2. In addition, the micro elastic member 2 is guided by the guide through hole 101, so that the micro elastic member 2 can accurately enter the assembly hole of the rotating seat 1, which overcomes the technical defect that the micro elastic member 2 is difficult to align with the assembly hole of the rotating seat 1 due to its small size, reduces the difficulty of assembling the micro elastic member 2, and greatly improves the assembly accuracy and assembly efficiency.

[0038] As a preferred embodiment, the end of the guide through hole 101 facing the fixture 30 is the first end, and the first end is configured to be able to transitionally fit with the micro elastic member 2. When the push-in mechanism 40 pushes the micro elastic member 2 to the first end of the guide through hole 101, since the guide through hole 101 and the micro elastic member 2 are transitionally fitted at this position, the micro elastic member 2 is in close contact with the hole wall of the guide through hole 101, so that excess grease on the surface of the micro elastic member 2 can be removed, so that the surface of the micro elastic member 2 obtains a more uniform oiling effect.

[0039] As a preferred embodiment, the end of the guide hole 101 facing away from the fixture 30 is the second end; the radial cross-sectional area of ​​the guide hole 101 decreases from the second end to the first end. This makes it easy for the micro elastic member 2 to enter the guide hole 101 and to closely contact the inner wall of the guide hole 101, so as to remove excess grease on the surface of the micro elastic member 2 and obtain a more uniform greasing effect.

[0040] As a preferred embodiment, see Figures 3 to 5 The oil filling device 20 includes an oil filling gun; the oil filling seat 10 is provided with an oil filling hole 102 which passes through the guide through hole 101 from the inner wall of the second end; the oil filling end of the oil filling gun is connected to the oil filling hole 102 to fill oil into the guide through hole 101 through the oil filling hole 102.

[0041] In the present embodiment, after the micro elastic member 2 is pushed into the guide through hole 101 by the pushing mechanism 40, the oiling gun is started, and the oiling gun injects oil into the oiling hole 102, and the oil flows into the guide through hole 101 through the oiling hole 102. Of course, optionally, an oiling gun can also be used to inject oil into the guide through hole 101 in advance, and then the micro elastic member 2 is pushed into the guide through hole 101. With the aforementioned method, the micro elastic member 2 is automatically stained with oil when moving in the guide through hole 101, and there is no need for manual oiling, thus eliminating the manual oiling process and further improving the assembly efficiency. In addition, by injecting oil into the guide through hole 101 with the oiling gun, the oil injection amount and oil injection speed can be accurately controlled, thereby realizing intelligent control. Preferably, refer to Figure 3 The oil filling gun of this embodiment includes an oil filling cylinder body 201, an oil filling pipe 202 and an oil filling joint 203. The oil filling joint 203 is installed on the oil filling seat 10 and is connected to the oil filling hole 102. One end of the oil filling pipe 202 is connected to the oil filling joint 203, and the other end is connected to the oil filling end of the oil filling cylinder body 201.

[0042] Understandable, see Figure 6 The fixture 30 of the present invention can carry multiple rotating seats 1, so the oil filling seat 10 is provided with oil filling holes 102 and guide through holes 101 that are the same in number as the rotating seats 1, that is, each oil filling hole 102 is installed with an oil filling joint 203, and each oil filling joint 203 is connected to an oil filling pipe 202, and correspondingly, the oil filling cylinder body 201 is provided with multiple oil outlet joints connected to the oil filling pipe 202, so that only one oil filling cylinder body 201 is required to fill oil to multiple guide through holes 101, which is conducive to cost saving.

[0043] As a preferred embodiment, see Figure 8The ejection mechanism 40 includes an ejection pin 401 and an ejection driving member 402. The ejection pin 401 is arranged at the output end of the ejection driving member 402, and the ejection pin 401 is driven by the ejection driving member 402 to enter the guide through hole 101 forward and move out of the guide through hole 101 backward; when the ejection pin 401 enters the guide through hole 101 forward, the ejection pin 401 pushes the micro elastic member 2 to move along the guide through hole 101 toward the fixture 30.

[0044] In this embodiment, the micro elastic member 2 is pushed to move in the guide hole 101 by the ejector pin 401, so that the micro elastic member 2 can be quickly and effectively pushed into the rotating seat 1, thereby maintaining the integrity of the micro elastic member 2 to the greatest extent, reducing the degree of surface damage, and improving the production quality of the micro elastic member 2.

[0045] As a preferred embodiment, see Figure 7 The ejector pin 401 comprises an ejector pin connector 4010 connected to the output end of the ejection driving member 402 and an ejector rod 4011 connected to the ejector pin 401 connector. A conical section 4012 is provided at one end of the ejector rod 4011 away from the ejector pin connector 4010. A head section 4013 is provided at the end of the conical section 4012. The diameter of the head section 4013 is smaller than the diameter of the ejector pin 4011. The conical section 4012 is a conical structure that gradually contracts toward the head section 4013.

[0046] In this embodiment, the end of the ejector pin 401 of the ejection mechanism 40 is designed to be a conical structure, so that when the ejector pin 401 pushes the micro elastic member 2 into the oil filling seat 10, it does not contact the hole wall of the guide through hole 101, thereby preventing the end of the ejector pin 401 from being stained with oil, and when the ejector pin 401 retracts, the oil will not be brought back to the workstation where the micro elastic member 2 is carried.

[0047] As a preferred embodiment, see Figure 2 and Figure 8, also includes a displacement mechanism 50, the oil filling seat 10 and the push-in mechanism 40 are both installed on the displacement mechanism 50, and the displacement mechanism 50 is used to drive the push-in mechanism 40 and the oil filling seat 10 to displace relative to the fixture 30 along the second direction after the micro elastic member 2 is inserted into the rotating seat 1, and the second direction is perpendicular to the first direction. In actual operation, it is found that since the micro elastic member 2 is stained with oil in the oil filling seat 10, after the ejector pin 401 of the push-in mechanism 40 contacts the micro elastic member 2 stained with oil, there will be stickiness between the ejector pin 401 and the micro elastic member 2. When the ejector pin 401 retracts, it will drive the micro elastic member 2, causing the installation position of the micro elastic member 2 on the rotating seat 1 to shift, affecting the assembly quality. In order to solve this problem, after the micro elastic member 2 is inserted into the rotating seat 1, a displacement mechanism 50 is used to drive the push-in mechanism 40 and the oil filling seat 10 to displace relative to the fixture 30 along the second direction (such as Fig.14 In the direction indicated by arrow Y), after displacement occurs, the ejector pin 401 of the ejection mechanism 40 moves away from the micro elastic member 2 along the second direction, and then retracts and resets, thereby preventing the ejector pin 401 of the ejection mechanism 40 from driving the micro elastic member 2 out of the assembly hole of the rotating seat 1 during the retraction process.

[0048] See also Figure 8 The displacement mechanism 50 of this embodiment includes a displacement support plate 501 and a displacement drive 502. The oil filling seat 10 and the ejection mechanism 40 are installed on the displacement support plate 501. The displacement drive 502 is used to drive the displacement support plate 501 to move up and down along the second direction. The displacement drive 502 drives the oil filling seat 10 and the ejection mechanism 40 to move upward along the second direction at the same time, while the fixture 30 remains stationary, so that the ejection mechanism 40 is displaced relative to the fixture 30. After the displacement occurs, the ejector pin 401 of the ejection mechanism 40 moves away from the micro elastic member 2, and then the displacement drive 502 drives the displacement support plate 501 to move downward along the second direction to reset. The displacement drive 502 of this embodiment is preferably a displacement cylinder.

[0049] It is understandable that the displacement mechanism 50 can also drive the fixture 30 to move, while the ejection mechanism 40 and the oil filling seat 10 remain stationary, and the above-mentioned effect can also be achieved.

[0050] As a preferred embodiment, see Figure 3 A guide column 103 extending toward the jig 30 is provided on one side of the oil filling seat 10 close to the jig 30, and a support groove 301 is provided on the jig 30 for cooperating with the guide column 103 to support the guide column 103. The guide through hole 101 penetrates the guide column 103 along the extension direction of the guide column 103. When the guide column 103 cooperates with the support groove 301, the guide through hole 101 is aligned with the assembly hole of the rotating seat 1.

[0051] In order to accurately insert the micro elastic into the rotating seat 1, a guide column 103 is provided between the oil filling seat 10 and the fixture 30. After the ejection mechanism 40 ejects the micro elastic member 2 from the oil filling seat 10, it continues to push the micro elastic member 2 along the guide column 103, so that the micro elastic member 2 accurately enters the assembly hole of the rotating seat 1 along the guide column 103. The guide column 103 is positioned by providing a support groove 301, so that the discharge port of the guide through hole 101 inside the guide column 103 is accurately aligned with the assembly hole of the rotating seat 1.

[0052] Preferably, the tube wall of the guide column 103 may be provided with a plurality of oil seepage holes, and the plurality of oil seepage holes are arranged in sequence along the extension direction of the guide column 103, and the oil seepage holes are connected to the guide through hole 101. Preferably, the oil seepage holes are provided on the lower side wall of the guide column 103, so that the oil can automatically seep out of the guide through hole 101 under the action of its own gravity, and the oil drips into the recovery container (not shown in the figure) after seeping out of the guide through hole 101. By providing the oil seepage holes, on the one hand, the grease in the guide through hole 101 can be seeped out to avoid the accumulation of a lot of grease in the guide through hole 101 due to long-term use, and on the other hand, the air tightness in the guide through hole 101 can be avoided to be too high, so that the grease splashes out of the end of the guide through hole 101 when the micro elastic member 2 is pushed to move.

[0053] As a preferred implementation, see Figure 8 The device also includes a clamping mechanism 60, which includes a pressing plate 601, on which a vertically arranged pressing rod 602 is provided, one side of the pressing plate 601 is connected to the oil filling seat 10, the pressing plate 601 is located above the fixture 30, and the pressing rod 602 is used to press the rotating seat 1 on the fixture 30.

[0054] Since the micro elastic member 2 is pushed into the rotating seat 1 carried by the fixture 30 by the pushing mechanism 40, in order to prevent the rotating seat 1 from moving randomly during the assembly process and affecting the assembly quality, the present embodiment positions the rotating seat 1 by the clamping mechanism 60 to prevent the rotating seat 1 from shifting; specifically, the rotating seat 1 is clamped by the pressure rod 602; since the pressure plate 601 is connected to the oil filling seat 10, and the oil filling seat 10 is connected to the shifting mechanism 50, the pressure rod 602 can be driven to rise and fall by the shifting mechanism 50 to press the rotating seat 1 on the fixture 30 to prevent the rotating seat 1 from shifting randomly during the assembly process.

[0055] Preferably, see Figure 6 The jig 30 of this embodiment is provided with a groove 302 adapted to the shape of the rotating seat 1. When the rotating seat 1 is accommodated in the groove 302, the rotating seat 1 is pressed by the pressing rod 602, so that the rotating seat 1 can be accurately limited on the jig 30. As a preferred embodiment, refer to Figure 8The device also includes a transverse movement mechanism 70, and the jig 30 is installed on the transverse movement mechanism 70. The transverse movement mechanism 70 is used to drive the jig 30 to move to and away from the assembly position; when the jig 30 is located at the assembly position, the jig 30 can be opposite to one end of the guide through hole 101.

[0056] In this embodiment, before assembly, the rotating seat 1 is manually or mechanically fixed on the fixture 30, and then the fixture 30 is driven to move to the assembly position by the transverse movement mechanism 70, so that the assembly hole of the rotating seat 1 carried by the fixture 30 can be automatically aligned with the guide through hole 101 of the oil filling seat 10, and there is no need to manually align the assembly hole of the rotating seat 1 with the guide through hole 101 of the oil filling seat 10, which is conducive to improving assembly efficiency. The transverse movement mechanism 70 can be a linear movement module, and the linear movement module can adopt a structure in which the motor 9033 and the slider cooperate, which belongs to the prior art and will not be described in detail here.

[0057] Also, see Fig.14 In order to realize the automation of the whole assembly process, the device also includes a feeding mechanism 80 and a transfer mechanism 90, see Figures 9 to 13, wherein the feeding mechanism 80 includes a vibrating feeder 801 and a dividing plate 802, the dividing plate 802 is used to disperse the multiple micro elastic members 2 transported by the vibrating feeder 801, so that the multiple micro elastic members 2 can enter the transfer mechanism 90 at the same time; the transfer mechanism 90 includes a transfer fixed seat 901, a transfer plate 902 slidably connected in the transfer fixed seat 901 and a transfer driving member 903 driving the transfer plate 902 to move relative to the transfer fixed seat 901, the transfer driving member 903 can drive the transfer plate 902 to move between a loading position and a discharging position, the transfer plate 902 is provided with a transfer groove 9020 for carrying the micro elastic members 2, the transfer fixed seat 901 is provided with a receiving groove 9010, a first guide groove 9011 and a second guide groove 9012, the feeding end of the receiving groove 9010 is connected to the discharging end of the dividing plate 802, when the transfer plate 9 When the transfer plate 902 moves to the loading position, the discharge end of the receiving groove 9010 is aligned with and connected to the feed end of the transfer groove 9020, so that the micro elastic member 2 carried by the receiving groove 9010 can enter the transfer groove 9020; when the transfer plate 902 moves to the discharge position, the feed end of the transfer groove 9020 is aligned with and connected to the first guide groove 9011, the discharge end of the transfer groove 9020 is aligned with and connected to the second guide groove 9012, and the end of the second guide groove 9012 facing away from the transfer groove 9020 is aligned with and connected to the guide through hole 101; the ejector pin 401 of the ejection mechanism 40 can pass through the first guide groove 9011, the transfer groove 9020 and the second guide groove 9012 in sequence, push the micro elastic member 2 in the transfer groove 9020 through the second guide groove 9012, and eject the micro elastic member 2 into the guide through hole 101.

[0058] The transfer groove 9020 on the transfer plate 902 receives the micro elastic member 2 transmitted by the loading mechanism 80, wherein the shape and size of the transfer groove 9020 are adapted to the shape and size of the micro elastic member 2, and the transfer driving member 903 drives the transfer plate 902 to move between the loading position and the discharging position, wherein the transfer driving member 903 includes a screw rod 9030, a nut 9031 threadedly matched with the screw rod 9030, and a motor 9033 driving the screw rod 9030 to rotate, and the transfer plate 902 is connected to the nut 9031 through a connecting member 9032, so that the motor 9033 drives the screw rod 9030 to rotate, and the screw rod 9030 drives the nut 9031 to move along its axis, thereby driving the transfer plate 902 to move back and forth between the loading position and the discharging position, and the transfer plate 902 is driven to move by the screw rod 9030, with good control accuracy and good stability. The transfer plate 902 is slidably connected in the transfer fixing seat 901, and the transfer fixing seat 901 is provided with a guide channel for guiding the sliding of the transfer plate 902, so that the movement of the transfer plate 902 can be guided; by setting a material receiving groove 9010 on the transfer fixing seat 901, the micro elastic member 2 coming out of the loading mechanism 80 is smoothly transmitted to the transfer groove 9020 through the material receiving groove 9010, thereby ensuring the stability of loading; by setting a first guide groove 9011 and a second guide groove 9012, when the transfer plate 902 moves to the discharge position, the first guide groove 9011 guides the ejector pin 401 of the ejection mechanism 40, so that the ejection mechanism 40 moves along the first guide groove 9011 to push the micro elastic member 2 in the transfer groove 9020, and then the micro elastic member 2 accurately enters the guide through hole 101 of the oil filling seat 10 along the second guide groove 9012.

[0059] See also Fig.14 Since two micro elastic parts 2 are to be assembled on the rotating seat 1, and the two micro elastic parts 2 are symmetrically arranged, in order to improve the assembly efficiency, the oil filling seat 10, the oil filling device 20, the ejection mechanism 40, the shifting mechanism 50, the feeding mechanism 80 and the transfer mechanism 90 can be arranged on the left and right sides of the fixture 30 at the same time, so that the two micro elastic parts 2 can be assembled into the rotating seat 1 at the same time, which greatly improves the assembly efficiency.

[0060] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, substitute and modify the above embodiments within the scope of the invention without departing from the principles and purpose of the present invention. All such changes should fall within the scope of protection of the claims of the present invention.

Claims

1. An automatic assembly device for micro elastic parts, which is used to assemble the micro elastic parts (2) on the rotating shaft of the earphone after applying oil, characterized in that: The invention comprises an oil filling seat (10) having a guide through hole (101), an oil filling device (20) for injecting oil into the guide through hole (101), a jig (30) opposite to an end of the guide through hole (101), and a push-in mechanism (40) for pushing the micro elastic member (2) to move along the guide through hole (101) toward the jig (30); when the push-in mechanism (40) pushes the micro elastic member (2) to move to a preset position, the micro elastic member (2) leaves the guide through hole (101) and is inserted into a rotating seat (1) carried by the jig (30) along a first direction, and the micro elastic member (2) is stained with oil during the process of the micro elastic member (2) moving in the guide through hole (101); an end of the guide through hole (101) facing the jig (30) is a first end, and the first end is configured to be able to transitionally cooperate with the micro elastic member (2); 101) the end facing away from the jig (30) is the second end; the radial cross-sectional area of ​​the guide through hole (101) decreases from the second end to the first end; it also includes a displacement mechanism (50), the oil filling seat (10) and the push-in mechanism (40) are both installed on the displacement mechanism (50), the displacement mechanism (50) is used to drive the push-in mechanism (40) and the oil filling seat (10) to shift relative to the jig (30) along a second direction after the micro elastic member (2) is inserted into the rotating seat (1), the second direction is perpendicular to the first direction; it also includes a transverse mechanism (70), the jig (30) is installed on the transverse mechanism (70), the transverse mechanism (70) is used to drive the jig (30) to move to and from the assembly position; when the jig (30) is located at the assembly position, the jig (30) can be opposite to one end of the guide through hole (101).

2. The automatic assembly device for micro elastic parts according to claim 1, characterized in that: The oil injection device (20) comprises an oil injection gun; the oil injection seat (10) is provided with an oil injection hole (102) which penetrates through the guide through hole (101) from the inner wall of the second end; the oil injection end of the oil injection gun is connected to the oil injection hole (102) so as to inject oil into the guide through hole (101) through the oil injection hole (102).

3. The automatic assembly device for micro elastic parts according to any one of claims 1 to 2, characterized in that: The ejection mechanism (40) comprises an ejector pin (401) and an ejection driving member (402); the ejector pin (401) is arranged at the output end of the ejection driving member (402); the ejector pin (401) is driven by the ejection driving member (402) to move forward into the guide through hole (101) and move backward out of the guide through hole (101); when the ejector pin (401) moves forward into the guide through hole (101), the ejector pin (401) pushes the micro elastic member (2) to move along the guide through hole (101) toward the fixture (30).

4. The automatic assembly device for micro elastic parts according to claim 3, characterized in that: The ejector pin (401) comprises an ejector pin connector (4010) connected to the output end of the ejection drive member (402) and an ejector rod (4011) connected to the ejector pin connector (4010); a conical section (4012) is provided at one end of the ejector rod (4011) away from the ejector pin connector (4010); a head section (4013) is provided at the end of the conical section (4012); a diameter of the head section (4013) is smaller than a diameter of the ejector pin (4011); and the conical section (4012) is a conical structure that gradually contracts toward the head section (4013).

5. The automatic assembly device for micro elastic parts according to claim 1, characterized in that: A guide column (103) extending toward the jig (30) is provided on a side of the oil filling seat (10) close to the jig (30); a support groove (301) for cooperating with the guide column (103) to support the guide column (103) is provided on the jig (30); the guide through hole (101) penetrates the guide column (103) along the extension direction of the guide column (103); when the guide column (103) cooperates with the support groove (301), the guide through hole (101) is aligned with the assembly hole of the rotating seat (1).

6. The automatic assembly device for micro elastic parts according to claim 5, characterized in that: The clamping mechanism (60) further comprises a clamping plate (601), wherein the clamping plate (601) is provided with a vertically arranged clamping rod (602), one side of the clamping plate (601) is connected to the oil filling seat (10), the clamping plate (601) is located above the fixture (30), and the clamping rod (602) is used to press the rotating seat (1) on the fixture (30).

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