A kind of automatic assembly machine for gear circlip of transfer case

Abstract

This invention discloses an automatic assembly machine for transfer case gear retaining rings, relating to the field of gear assembly. It includes an assembly table, with a gear holder mounted on top of the assembly table for securing the gear. Above the assembly table, on one side of the gear holder, is a front-end pressing mechanism for feeding the retaining ring into the gear. Above the assembly table, on the other side of the gear holder, is a rear-end pressing mechanism that works in conjunction with the front-end pressing mechanism to press the retaining ring into the gear. This invention achieves automatic feeding, precise positioning, and stable pressing of the retaining ring through an integrated mechanical structure. The equipment uses a feeding mechanism in conjunction with the pressing mechanism to continuously and smoothly push the retaining ring into the gear to be assembled. Simultaneously, the rear-end pressing mechanism works in tandem with the front-end pressing head to ensure that the retaining ring is evenly stressed and accurately embedded into the retaining ring groove, avoiding deformation and damage caused by manual operation.

Description

Technical Field

[0001] This invention relates to the field of gear accessory assembly technology, and in particular to an automatic assembly machine for transfer case gear snap rings. Background Technology

[0002] In mechanical transmission systems, the transfer case is a core component, and the assembly precision of its internal gears directly affects the stability and reliability of the entire power transmission. The gear retaining ring, as a key component for axial positioning, needs to be precisely embedded in the retaining ring groove of the gear's inner ring to ensure that the gear does not move during operation.

[0003] However, for a long time, this assembly process has relied heavily on manual operation: workers had to manually pick up the circlips one by one from the scattered pile, and then use pliers or simple clamps to pry them open and push them into the gear slots. This traditional method is not only labor-intensive and inefficient, but also prone to twisting, slipping, or improper installation of the circlips during manual loading due to their small size and high elasticity. This can lead to scratches on the inner wall of the gear or circlip failure, which in turn affects the overall assembly quality of the transfer case. Especially in mass production, the fatigue and movement errors from manual operation are further amplified, making it difficult to guarantee product consistency and resulting in high rework and scrap rates.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic assembly machine for transfer case gear snap rings. This assembly machine achieves automatic feeding, precise positioning, and stable pressing of snap rings through an integrated mechanical structure. The equipment uses a feeding mechanism in conjunction with a pressing mechanism to continuously and smoothly push the snap ring into the gear to be assembled. At the same time, the rear pressing mechanism and the front pressing head work together to ensure that the snap ring is evenly stressed and accurately embedded in the snap ring groove, avoiding deformation and damage caused by manual operation. Moreover, the entire assembly process is automatically controlled by an electrical system without manual intervention, which greatly improves assembly efficiency.

[0006] To achieve the above objectives, the present invention provides an automatic assembly machine for transfer case gear retaining rings, comprising an assembly table, a gear holder for retaining gears mounted above the assembly table, a front pressing mechanism for feeding retaining rings into gears mounted above the assembly table on one side of the gear holder, a rear pressing mechanism for pressing retaining rings into gears in conjunction with the front pressing mechanism mounted above the assembly table on the other side of the gear holder, and a feeding mechanism for storing and pushing retaining rings disposed above the assembly table between the rear pressing mechanism and the front pressing mechanism.

[0007] In one embodiment of the present invention, the rear-end pressing mechanism includes a base plate, a first slide rail, and a first cylinder. The base plate is fixed to the upper surface of the assembly table, and the gear holder is fixed above the base plate. The first slide rail is installed above the centerline of the base plate along its length. A first slide table is movably mounted above the first slide rail. A rear-end head is mounted on the side of the first slide table near the gear holder, and the rear-end head is coaxial with the gear. The first cylinder is fixedly mounted above the base plate via a cylinder bracket, and the front end of the piston rod of the first cylinder is connected to the first slide table. When the first cylinder operates, it can push the first slide table to move on the first slide rail, causing the rear-end head to reciprocate towards or away from the gear holder, thereby realizing the pressing and fitting assembly of the rear-end pressing mechanism with the retaining spring.

[0008] In one embodiment of the present invention, the feeding mechanism includes a vertical frame, a guide plate frame, a top frame, and a snap ring storage cylinder. The vertical frame is fixedly installed on the upper surface of the assembly table, and a third cylinder is fixedly installed above the vertical frame via the top frame. The guide plate frame is fixedly installed on one side of the vertical frame, and an ejector plate is slidably fitted onto the inner side of the guide plate frame. The top of the ejector plate is connected to the front end of the piston rod of the third cylinder. The top frame is located below the guide plate frame and fixed to the upper surface of the assembly table. The snap ring storage cylinder is fixedly installed on one side of the guide plate frame, and the snap ring storage cylinder has one end and top. The structure is a cylindrical structure with an opening. A top cover is installed above the opening of the snap ring storage cylinder. The bottom of the ejector plate is inserted into the inside of the snap ring storage cylinder through the opening at one end. When the ejector plate moves down, it can push a snap ring inside the snap ring storage cylinder into the top frame. When the ejector plate is in the initial position, the bottom of the ejector plate does not contact the snap ring inside the snap ring storage cylinder. When the feeding mechanism needs to feed, the third cylinder operates, driving the ejector plate to move down and push a snap ring at the opening end of the snap ring storage cylinder downward until it enters the top frame for preparation and then resets to the initial position, waiting for secondary feeding.

[0009] In one embodiment of the present invention, a fourth cylinder is installed at the closed end of the snap ring storage cylinder. The piston rod of the fourth cylinder extends into the snap ring storage cylinder and is fitted with a pressure plate. The pressure plate can press multiple snap rings tightly inside the snap ring storage cylinder. Through the top pressure of the pressure plate and the guide plate frame, a snap ring located at the open end of the snap ring storage cylinder will not fall into the top frame due to gravity, thus avoiding affecting the installation process of the remaining snap rings. It can also ensure that there is always a snap ring at the open end of the snap ring storage cylinder. That is, when a snap ring is pushed out and the ejector plate returns to its initial position, the remaining snap rings can be moved one snap ring distance towards the open end of the snap ring storage cylinder under the push of the fourth cylinder, that is, a snap ring is added to the open end of the snap ring storage cylinder for secondary feeding.

[0010] In one embodiment of the present invention, the snap ring docking mechanism includes a second slide and two push rods mounted above the second slide. The inner center of the two push rods is movably connected by a rotating part to form a cross scissor structure, allowing the front ends of the two push rods to rotate outward or inward. The front ends of the two push rods are equipped with alignment snap cones. When the snap ring is fed into the top frame by the feeding mechanism, the alignment snap cones at the front ends of the push rods can be inserted into the insertion holes above the snap ring to achieve connection and locking with the snap ring.

[0011] In one embodiment of the present invention, the rear ends of the two push rods have a gap, a support plate is installed below one end of the second slide, and a second cylinder is fixedly installed above the support plate. A top plate capable of inserting into the inner side of the ends of the two push rods is installed at the front end of the piston rod of the second cylinder. The top plate adopts a trapezoidal structure in which the width of the front end gradually decreases from the rear end. It should also be noted that the rotating part of the inner side of the two push rods is mounted on the rotating shaft of the second slide, which is a torque shaft. The torque of the torque shaft causes the push rods to have a tendency to expand outward at the front end, so that the alignment cones at the front end of the two push rods can correspond to the insertion hole position on the snap ring. When it is necessary to disengage the snap ring from the top frame, it is only necessary to control the top plate to gradually insert into the inner side of the two push rods through the second cylinder. The push rods are forced to rotate, causing the alignment cones at the front end to retract inward, so that the snap ring can disengage from the top frame. The snap ring can then be installed subsequently.

[0012] In one embodiment of the present invention, a second slide rail is provided above the assembly table at the bottom of the second slide table, and the second slide table is slidably mounted on the second slide rail so that the second slide table can move along the length direction of the assembly table to feed the snap ring into the gear.

[0013] In one embodiment of the present invention, the front end of the second slide is connected to a front end head via a connecting rod. The front end head is located outside the retaining spring, and the front end of the front end head has a stepped structure at the position of the retaining spring. When the retaining spring is pushed into the gear, the retaining spring will not move with the aligning retaining cones when the two aligning retaining cones are withdrawn from the insertion holes on the retaining spring. Then, the front end head, in conjunction with the pressing of the rear end head, can press the retaining spring into the gear, thereby realizing the automatic assembly of the gear.

[0014] In one embodiment of the present invention, the front-end pressing mechanism includes two supports mounted parallel to each other above the assembly table, with a lead screw rotatably mounted between the two supports. A motor is mounted on one of the supports, and the output shaft of the motor is connected to one end of the lead screw. A third slide is mounted on one side of the second slide, and a lead screw nut is embedded below the third slide. The lead screw nut is adapted to and sleeved with the lead screw. When the motor is running, it can drive the lead screw to rotate, and then, under the combined action of the lead screw nut and the lead screw, it can drive the third slide to move along the length direction of the assembly table, thereby realizing the movement control of the second slide and realizing the assembly of the snap ring.

[0015] In one embodiment of the present invention, the central axes of the rear end head and the front end head coincide.

[0016] Compared with the prior art, the automatic assembly machine for transfer case gear snap rings according to the present invention realizes automatic feeding, precise positioning and stable pressing of snap rings through an integrated mechanical structure. The equipment adopts a feeding mechanism in conjunction with a pressing mechanism, which can continuously and smoothly push the snap ring into the gear to be assembled. At the same time, the rear pressing mechanism and the front pressing head work together to ensure that the snap ring is evenly stressed and accurately embedded in the snap ring groove, avoiding deformation and damage caused by manual operation. Moreover, the entire assembly process is automatically controlled by the electrical system without manual intervention, which greatly improves the assembly efficiency, reduces the labor intensity of operators, and significantly improves the consistency and yield of products.

[0017] In addition, the pressing and pushing design of the snap ring storage cylinder and the locking and releasing mechanism of the expandable push rod in the equipment further ensure the continuity of material supply and the reliability of assembly operations, making snap ring assembly in mass production efficient, precise and stable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an automatic assembly machine for a transfer case gear snap ring according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of another perspective of an automatic assembly machine for a transfer case gear snap ring according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the feeding mechanism during disassembly in an automatic assembly machine for a transfer case gear snap ring according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the installation structure of the rear-end pressing mechanism in an automatic assembly machine for a transfer case gear snap ring according to an embodiment of the present invention;

[0022] Figure 5This is a schematic diagram of the installation structure of the snap ring docking mechanism and the front pressing mechanism in an automatic assembly machine for a transfer case gear snap ring according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the feeding mechanism installation structure in an automatic assembly machine for a transfer case gear snap ring according to an embodiment of the present invention.

[0024] Reference numerals: 1. Assembly table; 2. Rear end pressing mechanism; 20. Base plate; 21. Cylinder bracket; 22. First cylinder; 23. First slide table; 24. First slide rail; 25. Rear end head; 3. Snap ring docking mechanism; 30. Second slide table; 31. Push rod; 310. Rotating part; 32. Top plate; 33. Second cylinder; 34. Support plate; 35. Alignment cone; 36. Second slide rail; 37. Front end head; 4. Feeding mechanism; 40. Stand; 41. Top frame; 42. Guide plate frame; 43. Third cylinder; 44. Ejection plate; 45. Snap ring storage cylinder; 450. Top cover; 46. Fourth cylinder; 5. Front end pressing mechanism; 50. Bracket; 51. Motor; 52. Third slide table; 53. Lead screw; 54. Lead screw nut; 6. Gear bracket; 7. Gear; 8. Snap ring. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 - Appendix Figure 6 The specific embodiments of the present invention will be described in detail, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0026] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0027] like Figure 1 - Figure 6 As shown, an automatic assembly machine for transfer case gear snap rings according to a preferred embodiment of the present invention includes an assembly table 1. A gear holder 6 for snapping gear 7 is installed above the assembly table 1. A front pressing mechanism 5 for feeding snap ring 8 into gear 7 is installed on one side of the gear holder 6 above the assembly table 1. A rear pressing mechanism 2 for pressing snap ring 8 into gear 7 in cooperation with the front pressing mechanism 5 is installed on the other side of the gear holder 6 above the assembly table 1. A feeding mechanism 4 for storing and pushing snap ring 8 is provided between the rear pressing mechanism 2 and the front pressing mechanism 5 above the assembly table 1.

[0028] Working principle: When using this device, firstly, the gear 7 with the snap ring 8 to be assembled is snapped into the upper opening of the gear holder 6. Then, the feeding mechanism 4 pushes one snap ring 8 stored therein to the front end of the front pressing mechanism 5. After locking the snap ring 8, the front pressing mechanism 5 pushes it into the gear 7. Finally, the rear pressing mechanism 2 cooperates with the front pressing mechanism 5 to press the snap ring 8 into the gear 7, thus completing the assembly.

[0029] Specifically, such as Figure 4 As shown, in order to achieve the pressing and fitting assembly of the rear pressing mechanism 2 with the retaining ring 8, in this embodiment, the rear pressing mechanism 2 includes a base plate 20, a first slide rail 24, and a first cylinder 22. The base plate 20 is fixed on the upper surface of the assembly table 1, and the gear holder 6 is fixed above the base plate 20. The first slide rail 24 is installed above the centerline of the base plate 20 along the length direction of the base plate 20. A first slide table 23 is movably mounted above the first slide rail 24. A rear end head 25 is installed on the side of the first slide table 23 close to the gear holder 6. The rear end head 25 is coaxial with the gear 7. The first cylinder 22 is fixedly mounted above the base plate 20 through a cylinder bracket 21. The front end of the piston rod of the first cylinder 22 is connected to the first slide table 23. Based on this, when the first cylinder 22 runs, it can push the first slide table 23 to move on the first slide rail 24, so that the rear end head 25 moves back and forth towards or away from the gear holder 6, thereby achieving the pressing and fitting assembly of the rear pressing mechanism 2 with the retaining ring 8.

[0030] Specifically, such as Figure 4As shown, in order to realize the feeding of the feeding mechanism 4, in this embodiment, the feeding mechanism 4 includes a stand 40, a guide plate frame 42, a top frame 41, and a snap ring storage cylinder 45. The stand 40 is fixedly installed on the upper surface of the assembly table 1, and a third cylinder 43 is fixedly installed above the stand 40 through the top frame 41. The guide plate frame 42 is fixedly installed on one side of the stand 40, and an ejector plate 44 is slidably installed on the inner side of the guide plate frame 42. The top of the ejector plate 44 is connected to the front end of the piston rod of the third cylinder 43. The top frame 41 is located below the guide plate frame 42 and is fixed to the upper surface of the assembly table 1. The snap ring storage cylinder 45 is fixedly installed on one side of the guide plate frame 42. The snap ring storage cylinder 45 adopts a cylindrical structure with an opening at one end and the top. The top cover 450 is installed, and the bottom of the ejector plate 44 is inserted into the inside of the snap ring storage cylinder 45 through the opening at one end of the snap ring storage cylinder 45. When the ejector plate 44 moves down, it can push a snap ring 8 inside the snap ring storage cylinder 45 into the top frame 41. Based on this, when the ejector plate 44 is in the initial position, the bottom of the ejector plate 44 does not contact the snap ring 8 inside the snap ring storage cylinder 45. When the feeding mechanism 4 needs to feed, the third cylinder 43 operates, driving the ejector plate 44 to move down and push a snap ring 8 at the opening end of the snap ring storage cylinder 45 downward until it enters the top frame 41 for preparation and then returns to the initial position to wait for secondary feeding. It should also be noted that there is an opening below the opening end of the snap ring storage cylinder 45, which allows a snap ring 8 to be pushed into the top frame 41.

[0031] Specifically, such as Figure 6 As shown, in order to ensure that the snap rings 8 inside the snap ring storage cylinder 45 do not fall out and affect the installation process of the other snap rings 8, in this embodiment, a fourth cylinder 46 is installed at the closed end of the snap ring storage cylinder 45. The piston rod of the fourth cylinder 46 extends into the snap ring storage cylinder 45 and is equipped with a pressure plate. The pressure plate can press multiple snap rings 8 into the snap ring storage cylinder 45. Through the top pressure of the pressure plate and the guide plate frame 42, the snap ring 8 located at the open end of the snap ring storage cylinder 45 will not fall into the top frame 41 automatically due to gravity, thus avoiding affecting the installation process of the other snap rings 8. It can also ensure that there is always a snap ring 8 at the open end of the snap ring storage cylinder 45. That is, when a snap ring 8 is pushed out and the ejector plate 44 is reset to the initial position, the other snap rings 8 can move a distance of one snap ring 8 towards the open end of the snap ring storage cylinder 45 under the push of the fourth cylinder 46, that is, to add a snap ring 8 to the open end of the snap ring storage cylinder 45 for secondary feeding.

[0032] Specifically, such as Figure 5As shown, in order to facilitate the assembly of the retaining ring 8, in this embodiment, the retaining ring docking mechanism 3 includes a second slide 30 and two push rods 31 mounted on the second slide 30. The inner center of the two push rods 31 is movably connected by a rotating part 310 to form a cross scissor structure, so that the front ends of the two push rods 31 can rotate outward or inward (the front end of the push rod 31 is the end close to the retaining ring 8). The front ends of the two push rods 31 are equipped with alignment tapers 35. Based on this, when the retaining ring 8 is fed into the top frame 41 by the feeding mechanism 4, the alignment tapers 35 at the front ends of the push rods 31 can be inserted into the insertion hole above the retaining ring 8 to achieve connection and locking with the retaining ring 8.

[0033] Specifically, such as Figure 5 As shown, in order to control the expansion and contraction of the front ends of the two push rods 31, in this embodiment, the rear ends of the two push rods 31 have a gap. A support plate 34 is installed below one end of the second slide 30, and a second cylinder 33 is fixedly installed above the support plate 34. A top plate 32 that can be inserted into the inner side of the ends of the two push rods 31 is installed at the front end of the piston rod of the second cylinder 33. The top plate 32 adopts a trapezoidal structure in which the width gradually decreases from the front end to the rear end. It should also be noted that the rotating part 310 inside the two push rods 31 is assembled to the second slide 30. The rotating shaft on the 0 is a torque shaft. The torque of the torque shaft causes the front end of the push rod 31 to expand outward, so that the alignment cones 35 at the front end of the two push rods 31 can correspond to the insertion holes on the snap ring 8. Based on this, when it is necessary to remove the snap ring 8 from the top frame 41, it is only necessary to control the top plate 32 to gradually insert into the two push rods 31 through the second cylinder 33. The push rods 31 are forced to rotate, causing the alignment cones 35 at their front ends to retract inward, so that the snap ring 8 can be removed from the top frame 41. The snap ring 8 can then be installed.

[0034] Specifically, such as Figure 5 As shown, in order to enable the second slide table 30 to move and cooperate in sending the retaining ring 8 into the gear 7, in this embodiment, a second slide rail 36 is provided above the assembly table 1 at the bottom of the second slide table 30. The second slide table 30 is slidably mounted on the second slide rail 36, so that the second slide table 30 can move along the length direction of the assembly table 1 and send the retaining ring 8 into the gear 7.

[0035] Specifically, such as Figure 5As shown, in order to cooperate with the rear end head 25 to press the retaining ring 8 into the gear 7, in this embodiment, the front end of the second slide 30 is connected to the front end head 37 via a connecting rod. The front end head 37 is located outside the retaining ring 8, and the front end head 37 has a stepped structure at the position of the retaining ring 8. Based on this, when the retaining ring 8 is pushed into the gear 7, when the two aligning retaining cones 35 exit the insertion hole on the retaining ring 8, the retaining ring 8 will not move with the aligning retaining cones 35. Then, the front end head 37, in conjunction with the pressing of the rear end head 25, can press the retaining ring 8 into the gear 7, thereby realizing the automatic assembly of the gear 7.

[0036] Specifically, such as Figure 5 As shown, to achieve movement control of the second slide 30, in this embodiment, the front-end pressing mechanism 5 includes two parallel brackets 50 mounted above the assembly table 1. A lead screw 53 is rotatably mounted between the two brackets 50. A motor 51 is mounted on one of the brackets 50, and the output shaft of the motor 51 is connected to one end of the lead screw 53. A third slide 52 is mounted on one side of the second slide 30, and a lead screw nut 54 is embedded below the third slide 52. The lead screw nut 54 is adapted to and sleeved with the lead screw 53. Based on this, when the motor 51 runs, it can drive the lead screw 53 to rotate, and then, under the cooperation of the lead screw nut 54 and the lead screw 53, it can drive the third slide 52 to move along the length direction of the assembly table 1, thereby achieving movement control of the second slide 30 and assembling the snap ring 8. It should also be noted that the central axes of the rear end head 25 and the front end head 37 coincide.

[0037] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. An automatic assembly machine for transfer case gear snap rings, characterized in that, It includes an assembly table (1), above which a gear holder (6) for clamping gears (7) is installed. Above the assembly table (1), on one side of the gear holder (6), a front end pressing mechanism (5) for feeding snap rings (8) into gears (7) is installed. Above the assembly table (1), on the other side of the gear holder (6), a rear end pressing mechanism (2) for cooperating with the front end pressing mechanism (5) to press snap rings (8) into gears (7) is installed. Above the assembly table (1), between the rear end pressing mechanism (2) and the front end pressing mechanism (5), a feeding mechanism (4) for storing and pushing snap rings (8) is provided.

2. The automatic assembly machine for a transfer case gear snap ring according to claim 1, characterized in that, The rear-end pressing mechanism (2) includes: The base plate (20) is fixed to the upper surface of the assembly table (1), and the gear bracket (6) is fixed above the base plate (20); The first slide rail (24) is installed above the center line of the base plate (20) along the length direction of the base plate (20). A first slide table (23) is movably mounted above the first slide rail (24). A rear end head (25) is installed on the side of the first slide table (23) close to the gear bracket (6). The rear end head (25) is coaxial with the gear (7). The first cylinder (22) is fixedly mounted on the top of the base plate (20) by a cylinder bracket (21), and the front end of the piston rod of the first cylinder (22) is connected to the first slide (23).

3. The automatic assembly machine for transfer case gear snap rings according to claim 1, characterized in that, The feeding mechanism (4) includes: A support frame (40) is fixedly installed on the upper surface of the assembly table (1), and a third cylinder (43) is fixedly installed above the support frame (40) via a top frame (41). A guide plate frame (42) is fixedly installed on one side of the upright frame (40). An ejector plate (44) is slidably fitted on the inner side of the guide plate frame (42). The top of the ejector plate (44) is connected to the front end of the piston rod of the third cylinder (43). Top frame (41), which is located below the guide plate frame (42) and fixed to the upper surface of the assembly table (1); A snap ring storage tube (45) is fixedly installed on one side of the guide plate frame (42). The snap ring storage tube (45) adopts a cylindrical structure with an opening at one end and the top. A top cover (450) is installed above the opening of the snap ring storage tube (45). The bottom of the ejector plate (44) is inserted into the inside of the snap ring storage tube (45) from the opening at one end of the snap ring storage tube (45), so that when the ejector plate (44) moves down, it can push a snap ring (8) inside the snap ring storage tube (45) into the top frame (41).

4. An automatic assembly machine for a transfer case gear snap ring according to claim 3, characterized in that, The closed end of the snap ring storage tube (45) is equipped with a fourth cylinder (46). The piston rod of the fourth cylinder (46) extends into the snap ring storage tube (45) and is equipped with a pressure plate. The pressure plate can press multiple snap rings (8) into the snap ring storage tube (45). Through the top pressure of the pressure plate and the guide plate frame (42), a snap ring (8) located at the open end of the snap ring storage tube (45) will not fall into the top frame (41) automatically due to gravity.

5. An automatic assembly machine for a transfer case gear snap ring according to claim 4, characterized in that, The snap ring docking mechanism (3) includes a second slide (30) and two push rods (31) mounted on the second slide (30). The inner sides of the center of the two push rods (31) are movably connected by a rotating part (310) to form a cross scissor structure, so that the front ends of the two push rods (31) can rotate outward or inward. The front ends of the two push rods (31) are equipped with alignment snap cones (35).

6. An automatic assembly machine for a transfer case gear retaining ring according to claim 5, characterized in that, The two push rods (31) have a gap at their rear ends. A support plate (34) is installed below one end of the second slide (30). A second cylinder (33) is fixedly installed above the support plate (34). A top plate (32) is installed at the front end of the piston rod of the second cylinder (33) and can be inserted into the inner side of the ends of the two push rods (31). The top plate (32) adopts a trapezoidal structure in which the width of the front end gradually decreases to the width of the rear end.

7. An automatic assembly machine for a transfer case gear snap ring according to claim 6, characterized in that, A second slide rail (36) is provided above the assembly table (1) at the bottom of the second slide table (30). The second slide table (30) is slidably mounted on the second slide rail (36), so that the second slide table (30) can move along the length direction of the assembly table (1) to send the snap ring (8) into the gear (7).

8. An automatic assembly machine for a transfer case gear snap ring according to claim 7, characterized in that, The front end of the second slide (30) is connected to a front end head (37) via a connecting rod. The front end head (37) is located outside the retaining ring (8), and the front end head (37) has a stepped structure at the position of the retaining ring (8).

9. An automatic assembly machine for a transfer case gear snap ring according to claim 8, characterized in that, The front-end pressing mechanism (5) includes two brackets (50) installed in parallel above the assembly table (1). A lead screw (53) is rotatably installed between the two brackets (50). A motor (51) is installed on one of the brackets (50). The output shaft of the motor (51) is connected to one end of the lead screw (53). A third slide (52) is installed on one side of the second slide (30). A lead screw nut (54) is embedded below the third slide (52). The lead screw nut (54) is adapted to the lead screw (53) and sleeved with each other.

10. An automatic assembly machine for a transfer case gear snap ring according to claim 9, characterized in that, The central axes of the rear end head (25) and the front end head (37) coincide.

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