Snap ring assembly machine

Abstract

The utility model relates to the field of snap ring assembly, in particular to a snap ring assembly machine. Comprising a jig, a ring expanding mechanism and an assembling mechanism. The jig is driven by the carrier to run between a ring expanding station and an assembling station; a front section, a middle section and a rear section are arranged in the length direction of the body, and the section from the front section to the rear section is gradually increased. The ring expanding mechanism is arranged at the ring expanding station, is provided with a first push rod and is used for pushing the clamping ring to enter the middle section of the jig from the front section of the jig; the assembling mechanism is arranged on the assembling station and provided with a second push rod, and the second push rod moves in the mode that the second push rod is attached to the outer edge face of the jig from the middle section of the jig to push the clamping ring and is arranged on the target workpiece in a sleeving mode through the rear section of the jig. The clamping ring is accurately pushed into the middle section of the jig from the feeding mechanism through a first push rod made of a rigid material in the ring expanding mechanism, the clamping ring is continuously pushed from the middle section of the jig through a second push rod made of an elastic material in the assembling mechanism until the clamping ring is matched with the ball head assembly, and expanding of the clamping ring and assembling of the clamping ring and the ball head assembly are achieved.

Description

Technical Field

[0001] The utility model relates to the field of snap ring assembly, in particular to a snap ring assembly machine. Background Art

[0002] A speed reducer is an independent component composed of gear transmission, worm transmission, and gear-worm transmission enclosed in a rigid housing, and is commonly used as a speed reduction transmission device between a prime mover and a working machine. In an automotive speed reducer, a snap ring is a part that restricts the axial displacement of other parts on a transmission shaft or in a hole, and is fixed inside a ball head assembly on a rotating shaft. The snap ring mainly plays a role in fixing and limiting the transmission shaft. In addition, the snap ring can transmit axial force to gears and the rotating shaft.

[0003] Therefore, when installing the snap ring, it needs to be accurately snapped into the ball head assembly to achieve the fixing and limiting effects of the snap ring on the transmission shaft. Currently, it is relatively common to use a circlip pliers to hold the snap ring and snap it into the ball head assembly, and this method relies on manual labor. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a snap ring assembly machine to solve the problem of low snap ring assembly efficiency in the prior art.

[0005] The technical solution of the utility model is: a snap ring assembly machine, including:

[0006] A fixture, which runs at an expanding ring station and an assembly station under the drive of a carrier; it is arranged along its own length direction as a front section, a middle section, and a rear section, and the cross-section from the front section to the rear section gradually increases;

[0007] An expanding ring mechanism, arranged at the expanding ring station, having a first push rod for pushing the snap ring from the front section of the fixture into the middle section of the fixture;

[0008] An assembly mechanism, arranged at the assembly station, having a second push rod, and the second push rod moves along the outer edge surface of the fixture to push the snap ring and sleuth the snap ring on a target workpiece through the rear section of the fixture.

[0009] Preferably, the first push rod and the second push rod are made of rigid material and elastic material respectively.

[0010] Preferably, a transfer and positioning mechanism is further provided. The transfer and positioning mechanism includes a positioning block. The positioning block carries the snap ring and is connected with a transfer driver, and circulates between a feeding station corresponding to a feeding mechanism and the expanding ring station under the drive of the transfer driver.

[0011] Preferably, the positioning block is provided with a positioning through groove arranged in a shape imitating the snap ring along the length direction of the fixture. The snap ring enters from one end of the positioning through groove at the feeding station; at the expanding ring station, the first push rod penetrates through the positioning through groove and pushes the snap ring to enter the front section of the fixture from the other end.

[0012] Preferably, the feeding mechanism includes a bin for accommodating snap rings, an outlet end of the bin is provided with a discharge channel, and one end of the discharge channel far from the bin is arranged corresponding to a positioning block in the feeding station.

[0013] Preferably, a stop mechanism is further provided. The stop mechanism is arranged at the feeding station and includes stop jaws. When there is a snap ring in the positioning through slot, the stop jaws clamp and stop a part of the adjacent snap rings falling into the positioning through slot, and drive the clamped snap ring to move away from the positioning through slot under the drive of a retracting driver.

[0014] Compared with the prior art, the advantages of the present utility model are as follows: In this application, the snap ring is accurately pushed into the middle section of the fixture by the first push rod made of rigid material in the ring expanding mechanism, and the snap ring is continuously pushed by the second push rod made of elastic material in the assembling mechanism until it is matched with the ball head assembly, so as to realize the expansion of the snap ring and the assembly with the ball head assembly. Description of the Drawings

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0016] Figure 1 Structural diagram of a snap ring assembling machine according to the present utility model;

[0017] Figure 2 Schematic diagram of the assembling action of the snap ring, the fixture and the ball head assembly according to the present utility model;

[0018] Figure 3 Structural diagram of the transfer and positioning mechanism according to the present utility model;

[0019] Figure 4 Structural diagram of the stop mechanism according to the present utility model;

[0020] Figure 5 Structural diagram of the ring expanding mechanism according to the present utility model;

[0021] Figure 6 Schematic diagram of the carrier action according to the present utility model;

[0022] Figure 7 Structural diagram of the assembling mechanism according to the present utility model;

[0023] Among them: 1. feeding mechanism, 11. hopper, 12. feeding channel, 2. fixture, 21. front section, 22. middle section, 23. rear section, 3. ring expansion mechanism, 31. first push rod, 32. first cylinder, 4. assembly mechanism, 41. second push rod, 42. second cylinder, 5. transfer and positioning mechanism, 51. positioning block, 52. positioning slot, 53. transfer drive, 6. stop mechanism, 61. stop clamp, 62. retraction drive, 7. retaining ring, 8. ball head assembly, 9. carrier. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0025] Combination Figure 1 and Figure 2 As shown, a snap ring assembly machine is used to expand the diameter of a snap ring 7 and assemble it on a ball head assembly 8. The machine comprises a feeding mechanism 1, a fixture 2, a ring expansion mechanism 3 and an assembly mechanism 4.

[0026] Among them, the feeding mechanism 1 includes a silo 11, in which a plurality of retaining rings 7 are stored. The outlet end of the silo 11 is connected to a feeding channel 12. Driven by a vibration device, the retaining rings 7 are arranged in sequence in the feeding channel 12 and enter the jig 2 through a feeding station.

[0027] The loading station is provided with a transfer and positioning mechanism 5, which is used to accurately deliver the clamp ring 7 from the loading channel 12 into the fixture 2. Figure 3 As shown, the positioning block 51 includes a positioning slot 52 along the length direction of the fixture 2, and the positioning slot 52 can accommodate the snap ring 7 and is arranged in a contour with the snap ring 7. A transfer driver 53 is connected below the positioning block 51. When the snap ring 7 enters from one end of the positioning slot 52 through the feeding channel 12, the transfer driver 53 drives the positioning block 51 to lift into the ring expansion station, so that the other end of the positioning slot 52 corresponds to the front section 21 of the fixture 2. The transfer driver 53 includes a lifting connection block connected to the positioning block 51, and a lifting cylinder that drives the lifting connection block to move.

[0028] Furthermore, in this embodiment, a stop mechanism 6 is provided to prevent the transfer driver 53 from getting stuck when driving the positioning block 51 to move, as a result of a portion of the adjacent retaining ring 7 being located in the feeding channel 12 and another portion also entering the positioning groove 52 after one retaining ring 7 enters the positioning groove 52.

[0029] like Figure 4As shown, the stop mechanism 6 includes a stop jaw 61. The stop jaw 61 partially falls into the adjacent snap rings 7 of the positioning through slot 52 to hold the stop. Driven by the retraction driver 62, the clamped snap ring 7 is driven to move away from the positioning through slot 52, so that the snap ring 7 contacts the positioning block 51. Among them, the retraction driver 62 includes a retraction connection block connecting the stop jaw 61 and a retraction cylinder for driving the retraction connection block to move.

[0030] Combined with Figure 1 and Figure 5 As shown, the ring expanding mechanism 3 includes a first push rod 31. The first push rod 31 is arranged in the ring expanding station and is correspondingly arranged at one end of the positioning through slot 52 away from the fixture 2. The first push rod 31 is pushed by the first cylinder 32 to move along the length profile of the fixture 2 and penetrates through the positioning through slot 52 to push the snap ring 7 therein into the fixture 2.

[0031] In this embodiment, as Figure 2 shown, the fixture 2 has a front section 21, a middle section 22 and a rear section 23, and the cross-section of the fixture 2 gradually increases from the front section 21 to the rear section 23, so that the diameter of the snap ring 7 is gradually enlarged during the process of the snap ring 7 moving from the front section 21 to the rear section 23 along the outer edge surface of the fixture 2. As Figure 6 shown, both the fixture 2 and the ball head assembly 8 are mounted on the carrier 9 and are driven by the carrier 9 to operate in the ring expanding station and the assembly station corresponding to the assembly mechanism 4. The rear section 23 of the fixture 2 is correspondingly arranged opposite to the ball head assembly 8. When the fixture 2 is in the ring expanding station, its front section 21 is correspondingly arranged opposite to the positioning through slot 52.

[0032] To ensure that the first push rod 31 can accurately push the snap ring 7 onto the fixture 2, the first push rod 31 is made of a rigid material. Therefore, there is a fixed distance between multiple pushing ends of the first push rod 31. Since the cross-sectional area of the rear section 23 of the fixture 2 is relatively large, the first push rod 31 is only used to push the snap ring 7 from the front section 21 of the fixture 2 to the middle section 22 of the fixture 2. The actions of the snap ring 7 from the middle section 22 of the fixture 2 to the rear section 23 of the fixture 2 and finally being assembled onto the ball head assembly 8 are completed by the assembly mechanism 4.

[0033] As Figure 7 shown, the assembly mechanism 4 includes a second push rod 41. The second push rod 41 is arranged in parallel with the first push rod 31 and is driven by a second cylinder 42. Different from the first push rod 31, the second push rod 41 is made of an elastic material, so that its pushing end can fit the fixture 2 to move, and the distance between the pushing ends can also change with the outer edge surface of the fixture 2. Therefore, when the snap ring 7 is pushed by the first push rod 31 to the middle section 22 of the fixture 2, the carrier 9 carries the fixture 2 into the assembly station, and the second push rod 41 continues to push the snap ring 7 located in the middle section 22 of the fixture 2 and slews it onto the ball head assembly 8 through the rear section 23 to complete the assembly of the snap ring 7.

[0034] During operation:

[0035] 1. The snap ring 7 enters the positioning block 51 in the transfer and positioning mechanism 5 from the feeding channel 12 in the bin 11 in sequence from top to bottom, and then the transfer driver 53 jacks up the positioning block 51 together with the snap ring 7 inside to the ring expanding station.

[0036] 2. The first push rod 31 acts to push out the snap ring 7 in the positioning block 51 and push it from the front section 21 of the fixture 2 to the middle section 22 of the fixture 2.

[0037] 3. The carrier 9 carries the fixture 2 and runs from the ring expanding station to the assembly station.

[0038] 4. The second push rod 41 acts to continue pushing the snap ring 7 in the middle section 22 of the fixture 2, and it falls into the ball head assembly 8 through the tail section of the fixture 2, completing the assembly of the snap ring 7 and the ball head assembly 8.

[0039] The above embodiments are only used to illustrate the technical concept and features 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 accordingly, and it cannot be used to limit the protection scope of the present invention. For those skilled in the art, obviously the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A snap ring assembly machine, characterized in that, Including: A jig (2) that operates at an expanding ring station and an assembly station driven by a carrier (9); it is arranged along its own length direction as a front section (21), a middle section (22), and a rear section (23), and the cross-section of the front section (21) to the rear section (23) gradually increases; An expanding ring mechanism (3) is arranged at the expanding ring station and has a first push rod (31) for pushing the snap ring (7) from the front section (21) of the jig (2) into the middle section (22) of the jig (2); An assembly mechanism (4) is arranged at the assembly station and has a second push rod (41). The second push rod (41) moves along the outer edge surface of the jig (2) from the middle section (22) of the jig (2) to push the snap ring (7), and slews the snap ring (7) onto the target workpiece via the rear section (23) of the jig (2).

2. The snap ring assembling machine according to claim 1, characterized in that, The first push rod (31) and the second push rod (41) are made of rigid material and elastic material respectively.

3. The snap ring assembling machine according to claim 2, characterized in that, A transfer and positioning mechanism (5) is also provided. The transfer and positioning mechanism (5) includes a positioning block (51). The positioning block (51) carries the snap ring (7) and is connected with a transfer driver (53), and circulates between the feeding station of the corresponding feeding mechanism (1) and the expanding ring station driven by the transfer driver (53).

4. The snap ring assembling machine according to claim 3, wherein The positioning block (51) is provided with a positioning through groove (52) arranged in imitation of the snap ring (7) along the length direction of the jig (2). The snap ring (7) enters from one end of the positioning through groove (52) at the feeding station; at the expanding ring station, the first push rod (31) penetrates through the positioning through groove (52) and pushes the snap ring (7) to enter the front section (21) of the jig (2) from the other end.

5. The snap ring assembling machine according to claim 4, characterized in that, The feeding mechanism (1) includes a magazine (11) for accommodating the snap ring (7). An outlet channel is arranged at the outlet end of the magazine (11), and the end of the outlet channel away from the magazine (11) is arranged corresponding to the positioning block (51) at the feeding station.

6. The snap ring assembling machine according to claim 4, characterized in that, A stop mechanism (6) is also provided. The stop mechanism (6) is arranged at the feeding station and includes a stop jaw (61). When there is already a snap ring (7) in the positioning through groove (52), the stop jaw (61) clamps and stops the adjacent snap ring (7) partially falling into the positioning through groove (52), and drives the clamped snap ring (7) to move in a direction away from the positioning through groove (52) driven by a retracting driver (62).

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