A planetary gear needle roller press-fitting machine

Abstract

The present invention discloses a planetary gear needle roller press-fitting machine, which includes a frame, and also includes a needle roller arranging device, a planetary gear feeding mechanism, a planetary gear tray structure, a needle roller tray structure and a needle roller feeding mechanism. The planetary gear workpiece is placed on the planetary gear tray structure through the planetary gear feeding mechanism, and the needle roller feeding mechanism places the needle roller workpiece on the needle roller tray structure, and inserts the needle roller workpiece into the inner cavity of the planetary gear workpiece through the needle roller arranging device, thereby realizing the automatic assembly process of a plurality of needle roller workpieces and planetary gear workpieces. The advantage of such a design is that through the above automatic assembly process, the cooperation between processes is coordinated and reliable, the assembly efficiency of the planetary gear workpiece and the needle roller workpiece is improved, the product assembly quality is ensured, the labor cost is reduced, it saves time and effort, solves the problem that the existing manual loading not only has low efficiency but also is prone to missing loading, seriously affecting the product quality, the machine is easy to operate, thereby reducing the labor cost and increasing the product revenue.

Description

Technical Field

[0001] The present invention relates to the field of automation technology, and particularly relates to a planetary gear needle roller press-fitting machine. Background Art

[0002] In a planetary gear transmission mechanism, when its volume becomes smaller and more compact, in order not to reduce the transmission strength, the originally installed needle roller bearing is generally cancelled, and the needle rollers are directly installed into the planetary gear to act as a bearing. This not only saves the space occupied by the original bearing cage, but also does not reduce its transmission strength.

[0003] The existing needle roller assembly of the planetary gear usually adopts a manual loading method, that is, gear oil is first applied to the inner wall of the planetary gear. The gear oil is used to make the needle rollers adhere to the inner wall of the planetary gear without falling off, and then the needle rollers are manually inserted into the inner wall of the planetary gear in sequence, and the needle rollers are arranged annularly along the inner wall of the planetary gear. After the finished product assembly is completed, as Figure 7 shown, this manual loading method consumes a lot of manpower and material resources. It not only has low work efficiency and cannot meet the current market demand, but also is prone to the situation of missing needle roller installation, seriously affecting the product quality and the enterprise benefit. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problems in the prior art that the product device of the planetary gear is completed by manually loading the needle rollers, which is time-consuming and laborious, prone to the situation of missing needle roller installation, and has low work efficiency, so as to provide a planetary gear needle roller press-fitting machine that realizes the automatic assembly of the needle rollers and the planetary gear, is convenient to operate, time-saving and labor-saving, has a fast loading speed, and ensures the product quality.

[0005] The present invention provides a planetary gear needle roller press-fitting machine, including a frame, and further including:

[0006] A planetary gear loading device, including a planetary gear feeding mechanism and a planetary gear tray structure rotatably arranged on the frame. A plurality of fixing grooves are annularly and spacedly arranged on the planetary gear tray structure, and the planetary gear feeding mechanism is used to place the planetary gear workpiece to be assembled in the fixing grooves;

[0007] A needle roller loading device, including a needle roller tray structure rotatably arranged on the frame, a plurality of needle separating holes annularly and spacedly arranged on the needle roller tray structure, and a needle roller feeding mechanism for placing the needle roller workpiece in the needle separating holes; an assembly station for completing the assembly of the needle roller workpiece and the planetary gear workpiece is formed at the overlapping part between the needle roller tray structure and the planetary gear tray structure. The needle separating holes of the needle roller tray structure and the fixing grooves of the planetary gear tray structure are vertically opposite when rotating to the assembly station;

[0008] The needle roller arranging device is disposed at the assembly station and is respectively connected to the needle roller tray structure and the planetary gear tray structure. When the needle roller tray structure drives a plurality of the minute hand holes to sequentially rotate through the assembly station, the needle roller arranging device drives the needle roller workpieces in the plurality of the minute hand holes to be respectively inserted into the inner cavity of the planetary gear workpiece and arranged in a circular pattern on the inner cavity wall of the planetary gear workpiece.

[0009] In the above planetary gear needle roller press, the needle roller arranging device includes:

[0010] The needle dropping mechanism is disposed above the needle roller tray structure and is opposite to the minute hand hole on the assembly station, and is used for driving the needle roller workpiece in the minute hand hole to be inserted into the inner cavity wall of the planetary gear workpiece;

[0011] The self-rotation mechanism is disposed below the planetary gear tray structure and is opposite to the fixing groove on the assembly station. The self-rotation mechanism can penetrate through the fixing groove and extend into the inner cavity of the planetary gear workpiece, and form a needle roller positioning cavity for receiving the needle roller workpiece between the self-rotation mechanism and the inner cavity wall of the planetary gear workpiece. After the needle dropping mechanism drives the needle roller workpiece to complete a needle dropping action, the self-rotation mechanism drives the needle roller workpiece in the needle roller positioning cavity to rotate a certain angle along the circumference, so that a plurality of the needle roller workpieces inserted on the planetary gear workpiece are sequentially arranged in a circular pattern along the inner cavity wall of the planetary gear workpiece.

[0012] In the above planetary gear needle roller press, the self-rotation mechanism includes a rotating shaft that movably penetrates through the inner cavity of the planetary gear workpiece, and a plurality of positioning grooves disposed on the outer peripheral side wall of the rotating shaft and forming the needle roller positioning cavity with the inner cavity wall of the planetary gear workpiece. When the rotating shaft rotates, the needle roller workpiece in the needle roller positioning cavity is driven to rotate synchronously through the positioning grooves.

[0013] In the above planetary gear needle roller press, the needle roller feeding mechanism includes a needle roller vibrating disk, a needle feeding device oppositely disposed with respect to the center of the needle roller tray structure and the assembly station, and a guide needle tube connecting the needle feeding device and the needle roller vibrating disk. The guide needle tube is used for conveying the needle roller workpieces on the needle roller vibrating disk into the needle feeding device, and the needle feeding device drives the needle roller workpieces to be inserted into the minute hand holes.

[0014] In the above planetary gear needle roller press, a limiting structure is further disposed between the needle feeding device and the minute hand hole. The limiting structure has a clamping end extending to the opening of the needle feeding device, and the clamping end blocks the needle roller workpiece from disengaging from the needle feeding device when the needle feeding device stops working.

[0015] In the above planetary gear needle press, the needle tray structure includes a minute hand disc and a needle support disc that are arranged overlapping up and down. A number of the minute hand holes are provided on the minute hand disc, and the needle support disc is provided with a needle dropping hole for the needle workpiece to pass through at the assembly station.

[0016] In the above planetary gear needle press, the needle dropping mechanism includes a needle dropping push rod that movably penetrates through the minute hand hole and the needle dropping hole, a guide needle protrusion that extends from the bottom of the needle dropping hole to the needle positioning cavity, and a guide needle hole that is arranged on the guide needle protrusion and is coaxially arranged with the minute hand hole and the needle dropping hole. The needle dropping push rod pushes the needle workpiece to pass through the minute hand hole and the needle dropping hole, and inserts it into the needle positioning cavity along the guide needle hole.

[0017] In the above planetary gear needle press, the planetary gear loading device includes a planetary gear loading belt arranged on one side of the machine frame, a loading station arranged on the rotation path of the fixed groove and before the assembly station, and a loading manipulator that reciprocates between the planetary gear loading belt and the loading station.

[0018] In the above planetary gear needle press, it further includes a finished product discharging device arranged opposite to the planetary gear loading device. The finished product discharging device includes a finished product discharging belt arranged on the other side of the machine frame, a finished product station arranged on the rotation path of the fixed groove and after the assembly station, and a discharging manipulator that reciprocates between the finished product discharging belt and the finished product station.

[0019] In the above planetary gear needle press, a detection station is further arranged on the rotation path of the fixed groove between the loading station and the assembly station. A planetary gear detection device is arranged above the detection station. The planetary gear detection device includes a detection rod that moves up and down along the axis of the detection station, and a stroke detector connected to the detection rod. The detection rod can movably press the planetary gear workpiece in the detection station, and the stroke detector sends a detection signal according to the pressing distance of the detection rod.

[0020] The technical solution of the present invention has the following advantages compared with the prior art:

[0021] 1. The planetary gear needle roller press machine provided by the present invention, when in use, places a planetary gear workpiece in a fixed groove of a planetary gear tray structure via a planetary gear loading mechanism. The planetary gear workpiece rotates with the planetary gear tray structure to an assembly station. Simultaneously, the needle roller loading mechanism places the needle roller workpieces in the plurality of minute needle holes of the needle roller tray structure. The needle roller tray structure drives the plurality of needle roller workpieces to rotate sequentially through the assembly station. The needle roller arrangement device inserts the needle roller workpieces that have arrived at the assembly station into the inner cavity of the planetary gear workpiece and arranges them in a circular pattern on the inner cavity wall of the planetary gear workpiece. Gear oil applied to the inner cavity wall of the planetary gear workpiece adheres to the needle roller workpiece, thereby achieving an automated assembly process of the plurality of needle roller workpieces and the planetary gear workpiece. The advantage of this design is that, through the above-mentioned automated assembly process, the coordination between the processes is reliable, the efficiency of the assembly of the planetary gear workpiece and the needle roller workpiece is improved, the product assembly quality is guaranteed, the labor cost is reduced, and time and labor are saved. This solves the problem of existing manual filling that is not only inefficient but also prone to missing parts, which seriously affects product quality. The machine is easy to operate, thereby reducing labor costs and increasing product profits.

[0022] 2. In the planetary gear needle roller press provided by the present invention, the needle roller arrangement device drives the needle roller workpiece in the minute needle hole to fall and be inserted into the needle roller positioning cavity between the planetary gear workpiece and the rotation mechanism through the needle drop mechanism, and then uses the rotation mechanism to drive the needle roller workpiece in the needle roller positioning cavity to rotate a certain angle to stagger the needle drop position of the next needle drop mechanism, and the above two actions are alternated reciprocatingly until the rotation mechanism rotates 360 degrees, that is, after several of the needle roller workpieces are arranged in a circle along the inner cavity wall of the planetary gear workpiece, the rotation mechanism is separated from the fixed groove. At this time, the needle roller arrangement device completes the preset action, and the planetary gear tray structure drives the assembled planetary gear workpiece to rotate and leave the assembly station.

[0023] 3. The planetary gear needle roller press provided by the present invention, when the planetary gear workpiece rotates to the assembly station, the rotating shaft of the self-rotating mechanism will extend upward from the bottom of the fixed groove into the inner cavity of the planetary gear workpiece, so that the multiple positioning grooves on the outer peripheral side wall of the rotating shaft and the inner cavity wall of the planetary gear workpiece form a needle roller positioning cavity, and the positioning grooves are used to increase the force area between the rotating shaft and the multiple needle roller workpieces, ensuring that the rotating shaft can drive the needle roller workpieces to rotate synchronously, and after the needle roller arrangement device completes the preset action, the rotating shaft will move down and reset to the initial state. At this time, the multiple needle roller workpieces are retained on the inner cavity wall of the planetary gear workpiece due to the viscosity of the gear oil, thereby ensuring that the multiple needle roller workpieces in the planetary gear workpiece will not tilt or fall off.

[0024] 4. The planetary gear needle roller press machine provided by the present invention has a needle roller feeding mechanism comprising a needle roller vibration plate, a needle roller loader and a needle guide tube. The needle roller vibration plate removes oversized needle roller workpieces by vibration, and automatically and orderly arranges disordered needle roller workpieces, and then accurately transports them to the needle roller loader through the needle guide tube. Finally, the needle roller loader is used to insert the needle roller workpieces into the minute pin hole one by one, ensuring that there is only one needle roller workpiece in the minute pin hole rotating through the assembly station, avoiding the problem of multiple or wrong installation, and improving the reliability of the machine during operation.

[0025] 5. In the planetary gear needle roller press machine provided by the present invention, the needle roller tray structure is divided into a minute needle plate and a needle support plate, the needle support plate is fixed on the frame, the minute needle plate is rotatably arranged above the needle support plate, and during the rotation of the minute needle plate, the needle roller workpiece in the minute needle hole will be supported by the needle support plate until it is rotated to the assembly station, and the needle roller workpiece will fall into the needle drop hole, thereby avoiding the problem of the needle roller workpiece detaching from the minute needle hole during rotation.

[0026] 6. The planetary gear needle roller press machine provided by the present invention pushes the needle roller workpiece in the needle drop hole through the minute needle hole, so that the needle roller workpiece falls into the needle roller positioning cavity along the guide needle hole of the guide needle protrusion, thereby preventing the needle roller workpiece from getting stuck in the needle drop hole or the guide needle hole during the falling process, and at the same time using the guide needle hole to guide the falling direction of the needle roller workpiece, ensuring that the falling position of the needle roller workpiece is relatively fixed.

[0027] 7. The planetary gear needle roller press provided by the present invention detects whether the planetary gear workpiece in the detection station is installed in place by setting a detection rod, that is, when the detection rod is pressed down to reach a preset distance from the planetary gear workpiece, the stroke detector will send a normal signal to the console; and if the planetary gear workpiece is not installed in the fixed groove in the detection station or the planetary gear workpiece in the detection station is installed skewed, resulting in the downward pressing distance of the detection rod being too low or too high, the stroke detector will send an alarm signal to the console to remind the staff that the machine has an operating error. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 This is a schematic structural diagram of the planetary gear needle roller press machine provided by the present invention;

[0030] Figure 2 is Figure 1 the structural schematic diagram of the planetary gear needle press after hiding part of the frame as shown;

[0031] Figure 3 is Figure 2 the front structural schematic diagram of the planetary gear needle press as shown;

[0032] Figure 4 is Figure 2 the back structural schematic diagram of the planetary gear needle press as shown;

[0033] Figure 5 is Figure 4 the partial enlarged structural schematic diagram of the A-A sectional view as shown;

[0034] Figure 6 is Figure 2 the partial enlarged structural schematic diagram of the rotation mechanism as shown;

[0035] Figure 7 is Figure 3 the partial enlarged structural schematic diagram of the planetary gear tray structure as shown;

[0036] Figure 8 is the finished product structural schematic diagram after the needle workpiece is inserted into the planetary gear workpiece;

[0037] Explanation of reference numerals:

[0038] 1 - Frame;

[0039] 2 - Planetary gear loading mechanism; 21 - Planetary gear loading belt; 22 - Loading manipulator;

[0040] 3 - Planetary gear tray structure; 31 - Fixed groove; 32 - Planetary gear workpiece;

[0041] 4 - Needle tray structure; 41 - Minute needle hole; 42 - Needle workpiece; 43 - Minute needle plate; 44 - Needle supporting plate; 45 - Needle dropping hole;

[0042] 5 - Needle loading mechanism; 51 - Needle vibrating bowl; 52 - Needle feeding device; 53 - Limiting structure; 54 - Clamping end;

[0043] 6 - Needle dropping mechanism; 61 - Needle dropping push rod; 62 - Needle guiding protrusion; 63 - Needle guiding hole;

[0044] 7 - Rotation mechanism; 71 - Needle positioning cavity; 72 - Rotating shaft; 73 - Positioning groove;

[0045] 8 - Finished product discharging device; 81 - Finished product discharging belt; 82 - Discharging manipulator;

[0046] 9 - Planet gear detection device; 91 - Detection rod; 92 - Stroke detector. Detailed implementation

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work belong to the scope of protection of the present invention.

[0048] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0051] Embodiment 1

[0052] The following is a specific description of this embodiment with reference to the accompanying drawings:

[0053] The present invention provides a planetary gear needle roller press as shown in Figures 1-8 which includes a frame 1 and also includes:

[0054] A planetary gear loading device, including a planetary gear feeding mechanism 2 and a planetary gear tray structure 3 rotatably arranged on the frame 1. A plurality of fixing grooves 31 are annularly and spacedly arranged on the planetary gear tray structure 3. The planetary gear feeding mechanism 2 is used to place the planetary gear workpiece 32 to be assembled into the fixing grooves 31.

[0055] The needle roller loading device includes a needle roller tray structure 4 rotatably arranged on the frame 1, a plurality of needle separating holes 41 annularly and spacedly arranged on the needle roller tray structure 4, and a needle roller feeding mechanism 5 for placing needle roller workpieces 42 into the needle separating holes 41; an overlapping portion between the needle roller tray structure 4 and the planetary gear tray structure 3 forms an assembly station for assembling the needle roller workpieces 42 and the planetary gear workpieces 32, and the needle separating holes 41 of the needle roller tray structure 4 and the fixing grooves 31 of the planetary gear tray structure 3 are vertically opposite when rotating to the assembly station.

[0056] The needle roller arranging device is arranged at the assembly station and is respectively connected to the needle roller tray structure 4 and the planetary gear tray structure 3. When the needle roller tray structure 4 drives a plurality of the needle separating holes 41 to sequentially rotate through the assembly station, the needle roller arranging device drives the needle roller workpieces 42 in the plurality of needle separating holes 41 to be respectively inserted into the inner cavity of the planetary gear workpiece 32 and arranged in a ring on the inner cavity wall of the planetary gear workpiece 32.

[0057] The above implementation manner is the core technical solution of this embodiment. When the planetary gear needle roller press is in use, the planetary gear workpiece 32 is placed in the fixing groove 31 of the planetary gear tray structure 3 through the planetary gear feeding mechanism 2. The planetary gear workpiece 32 rotates with the planetary gear tray structure 3 to the assembly station. At the same time, the needle roller feeding mechanism 5 will respectively place the needle roller workpieces 42 into a plurality of needle separating holes 41 of the needle roller tray structure 4. The needle roller tray structure 4 drives a plurality of needle roller workpieces 42 to sequentially rotate through the assembly station, and the needle roller arranging device inserts the needle roller workpieces 42 reaching the assembly station into the inner cavity of the planetary gear workpiece 32 and arranges them in a ring on the inner cavity wall of the planetary gear workpiece 32. According to the gear oil smeared on the inner cavity wall of the planetary gear workpiece 32, the needle roller workpieces 42 will be adhered, so as to realize the automatic assembly process of a plurality of needle roller workpieces 42 and the planetary gear workpiece 32. The advantage of such a design is that through the above automatic assembly process, the cooperation between processes is coordinated and reliable, the assembly efficiency of the planetary gear workpiece 32 and the needle roller workpiece 42 is improved, the product assembly quality is guaranteed and the labor cost is reduced, which is time-saving and labor-saving, solves the problem that the existing manual loading not only has low efficiency but also is prone to missing loading, seriously affecting the product quality, the machine is easy to operate, thus reducing the labor cost and increasing the product income.

[0058] The following will combine Figures 5-6 to make a detailed description of the specific structure of the needle roller arranging device:

[0059] The needle arranging device includes a needle dropping mechanism 6 disposed above the needle tray structure 4 and a self-rotating mechanism 7 disposed below the planetary gear tray structure 3. The needle dropping mechanism 6 is disposed opposite to the minute hand hole 41 on the assembly station, and the self-rotating mechanism 7 is disposed opposite to the fixing groove 31 on the assembly station. The self-rotating mechanism 7 can pass through the fixing groove 31 and extend into the inner cavity of the planetary gear workpiece 32, and a needle positioning cavity 71 for receiving the needle workpiece 42 is formed between the self-rotating mechanism 7 and the inner cavity wall of the planetary gear workpiece 32. The needle arranging device drives the needle workpiece 42 in the minute hand hole 41 to drop and be inserted into the needle positioning cavity 71 through the needle dropping mechanism 6, and then uses the self-rotating mechanism 7 to drive the needle workpiece 42 in the needle positioning cavity 71 to rotate a certain angle to stagger the needle dropping position after the next action of the needle dropping mechanism 6. The above two actions are reciprocated alternately until the self-rotating mechanism 7 rotates 360 degrees, that is, after several needle workpieces 42 are arranged in a ring along the inner cavity wall of the planetary gear workpiece 32, the self-rotating mechanism 7 is separated from the fixing groove 31. At this time, the needle arranging device completes the preset action, and the planetary gear tray structure 3 drives the assembled planetary gear workpiece 32 to rotate away from the assembly station.

[0060] As a specific structural setting, the self-rotating mechanism 7 includes a rotating shaft 72 movably penetrating through the inner cavity of the planetary gear workpiece 32 and a plurality of positioning grooves 73 provided on the outer peripheral side wall of the rotating shaft 72. When the planetary gear workpiece 32 rotates to the assembly station, the rotating shaft 72 of the self-rotating mechanism 7 extends upward from the bottom of the fixing groove 31 into the inner cavity of the planetary gear workpiece 32, so that a plurality of positioning grooves 73 and the inner cavity wall of the planetary gear workpiece 32 form a needle positioning cavity 71. The positioning grooves 73 are used to increase the force-bearing area between the rotating shaft 72 and a plurality of needle workpieces 42, ensuring that the rotating shaft 72 can drive the needle workpieces 42 to rotate synchronously. And after the needle arranging device completes the preset action, the rotating shaft 72 will move down to the initial state. At this time, a plurality of needle workpieces 42 are retained on the inner cavity wall of the planetary gear workpiece 32 of the planetary gear workpiece 32 due to the viscosity of the gear oil, so as to ensure that a plurality of needle workpieces 42 in the planetary gear workpiece 32 will not tilt or fall off.

[0061] Such as Figures 3-4As shown, the needle roller feeding mechanism 5 includes a needle roller vibration plate 51, and a needle loading device 52 arranged relative to the assembly station with respect to the center of the needle roller tray structure 4, and a needle guide tube connecting the needle loading device 52 and the needle roller vibration plate 51. The needle roller vibration plate 51 removes oversized needle roller workpieces 42 by vibration, and automatically arranges disordered needle roller workpieces 42 in an orderly and directional manner, and then accurately transports them to the needle loading device 52 through the needle guide tube. Finally, the needle loading device 52 is used to insert the needle roller workpieces 42 into the minute needle hole 41 one by one to ensure that they rotate through the assembly station. There is only one needle roller workpiece 42 in the minute needle hole 41, which avoids the problem of multiple installation or wrong installation and improves the reliability of the machine during operation. It is further provided that a limiting structure 53 is provided between the needle applicator 52 and the minute needle hole 41, and the limiting structure 53 has a clamping end 54 extending to the opening of the needle applicator 52. When the needle applicator 52 stops working, the clamping end 54 will abut against the needle outlet of the needle applicator 52, thereby blocking the needle roller workpiece 42 from escaping from the needle applicator 52 and preventing the needle roller workpiece 42 from being scattered disorderly on the needle roller tray structure 4.

[0062] The following combination Figure 5 The specific setting method of the needle roller tray structure 4 is described in detail:

[0063] The needle roller tray structure 4 includes a minute needle plate 43 and a needle support plate 44 which are overlapped with each other. Several minute needle holes 41 are arranged on the minute needle plate 43. The needle support plate 44 is provided with a needle drop hole 45 for the needle roller workpiece 42 to pass through at the assembly station. Since the needle support plate 44 is fixed on the frame 1, the minute needle plate 43 is rotatably arranged above the needle support plate 44, that is, during the rotation of the minute needle plate 43, the needle roller workpiece 42 in the minute needle hole 41 will be supported by the needle support plate 44 until it is rotated to the assembly station, and the needle roller workpiece 42 will fall into the needle drop hole 45, thereby avoiding the problem of the needle roller workpiece 42 detaching from the minute needle hole 41 during rotation.

[0064] As a specific structural arrangement, the needle dropping mechanism 6 includes a needle dropping push rod 61 movably passing through the minute hand hole 41 and the needle dropping hole 45, a needle guiding protrusion 62 extending from the bottom of the needle dropping hole 45 towards the needle roller positioning cavity 71, and a needle guiding hole 63 provided on the needle guiding protrusion 62 and coaxially arranged with the minute hand hole 41 and the needle dropping hole 45. By passing the needle dropping push rod 61 through the minute hand hole 41 to push against the needle roller workpiece 42 in the needle dropping hole 45, the needle roller workpiece 42 is made to drop along the needle guiding hole 63 of the needle guiding protrusion 62 into the needle roller positioning cavity 71, thereby preventing the needle roller workpiece 42 from getting stuck and staying in the needle dropping hole 45 or the needle guiding hole 63 during the dropping process. At the same time, the needle guiding hole 63 is used to guide the dropping direction of the needle roller workpiece 42 to ensure that the dropping position of the needle roller workpiece 42 is relatively fixed.

[0065] As Figure 3 shown, the planetary gear feeding device includes a planetary gear feeding belt 21 arranged on one side of the frame 1, a feeding station arranged on the rotation path of the fixed groove 31 and before the assembly station, and a feeding manipulator 22 reciprocating between the planetary gear feeding belt 21 and the feeding station. When a worker uses the machine, they only need to place the planetary gear workpieces 32 smeared with gear oil on the planetary gear feeding belt 21. The planetary gear feeding device will rotate the planetary gear feeding belt 21, and then the feeding manipulator 22 will pick up the planetary gear workpieces 32 and place them into the fixed groove 31 of the feeding station. And through the rotation of the planetary gear tray structure 3, the planetary gear workpieces 32 at the feeding station are driven to move to the assembly station to complete the subsequent assembly tasks.

[0066] As a specific structural arrangement, the planetary gear needle presser also includes a finished product discharging device 8 arranged opposite to the planetary gear loading device. The finished product discharging device 8 includes a finished product discharging belt 81 arranged on the other side of the frame 1, a finished product station arranged on the rotation path of the fixed groove 31 and after the assembly station, and a discharging manipulator 82 reciprocating between the finished product discharging belt 81 and the finished product station. The assembled planetary gear workpieces 32 will move to the finished product station along with the rotation of the planetary gear tray structure 3, and then are picked up by the discharging manipulator 82 and placed on the finished product discharging belt 81. Workers only need to recycle the assembled planetary gear workpieces 32 on the finished product discharging belt 81, which is convenient to operate.

[0067] As Figure 3 and Figure 7As shown, a detection station located between the feeding station and the assembly station is further provided on the rotation path of the fixed groove 31. Above the detection station, there is a planetary gear detection device 9. The planetary gear detection device 9 includes a detection rod 91 that moves up and down along the axis of the detection station, and a travel detector 92 connected to the detection rod 91. By setting the detection rod 91 to detect whether the planetary gear workpiece 32 in the detection station is installed in place, that is, when the detection rod 91 presses down and abuts against the planetary gear workpiece 32 to reach a preset distance, the travel detector 92 will send a normal signal to the console. And when the planetary gear workpiece 32 is not installed in the fixed groove 31 in the detection station or the planetary gear workpiece 32 in the detection station is installed obliquely, resulting in too low or too high pressing distance of the detection rod 91, the travel detector 92 will send an alarm signal to the console to remind the staff that the machine has a running error.

[0068] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom still fall within the protection scope of the present invention.

Claims

1. A planetary gear needle roller press-fitting machine, comprising a frame (1), characterized in that, It further includes: A planetary gear loading device, including a planetary gear feeding mechanism (2), and a planetary gear tray structure (3) rotatably arranged on the frame (1). A number of fixing grooves (31) are annularly and spacedly arranged on the planetary gear tray structure (3). The planetary gear feeding mechanism (2) is used to place the planetary gear workpieces (32) to be assembled into the fixing grooves (31). A needle roller loading device, including a needle roller tray structure (4) rotatably arranged on the frame (1), a number of minute hand holes (41) annularly and spacedly arranged on the needle roller tray structure (4), and a needle roller feeding mechanism (5) for placing the needle roller workpieces (42) into the minute hand holes (41). An overlapping portion between the needle roller tray structure (4) and the planetary gear tray structure (3) forms an assembly station for assembling the needle roller workpieces (42) with the planetary gear workpieces (32). The minute hand holes (41) of the needle roller tray structure (4) and the fixing grooves (31) of the planetary gear tray structure (3) are vertically opposite when rotating to the assembly station. A needle roller arranging device, arranged at the assembly station and respectively connected to the needle roller tray structure (4) and the planetary gear tray structure (3). When the needle roller tray structure (4) drives a number of the minute hand holes (41) to sequentially rotate through the assembly station, the needle roller arranging device drives the needle roller workpieces (42) in the minute hand holes (41) to be respectively inserted into the inner cavity of the planetary gear workpiece (32) and arranged in a circular pattern along the inner cavity wall of the planetary gear workpiece (32). The needle roller arranging device includes a needle dropping mechanism (6) and a self-rotation mechanism (7).

2. The planetary gear needle roller press machine according to claim 1, characterized in that: The needle roller arranging device includes: A needle dropping mechanism (6), arranged above the needle roller tray structure (4) and opposite to the minute hand holes (41) at the assembly station, for driving the needle roller workpieces (42) in the minute hand holes (41) to be inserted into the inner cavity wall of the planetary gear workpiece (32). A self-rotation mechanism (7), arranged below the planetary gear tray structure (3) and opposite to the fixing grooves (31) at the assembly station. The self-rotation mechanism (7) can pass through the fixing grooves (31) and extend into the inner cavity of the planetary gear workpiece (32), and a needle roller positioning cavity (71) for receiving the needle roller workpieces (42) is formed between the self-rotation mechanism (7) and the inner cavity wall of the planetary gear workpiece (32). After the needle dropping mechanism (6) drives the needle roller workpieces (42) to complete a needle dropping action, the self-rotation mechanism (7) drives the needle roller workpieces (42) in the needle roller positioning cavity (71) to rotate a certain angle along the circumference, so that a number of the needle roller workpieces (42) inserted on the planetary gear workpiece (32) are sequentially arranged in a circular pattern along the inner cavity wall of the planetary gear workpiece (32).

3. The planetary gear needle roller press-fitting machine according to claim 2, characterized in that: The rotation mechanism (7) includes a rotating shaft (72) movably passing through the inner cavity of the planetary gear workpiece (32), and a plurality of positioning grooves (73) provided on the outer peripheral side wall of the rotating shaft (72) to form the needle roller positioning cavity (71) with the inner cavity wall of the planetary gear workpiece (32). When the rotating shaft (72) rotates, the needle roller workpiece (42) in the needle roller positioning cavity (71) is driven to rotate synchronously through the positioning grooves (73).

4. The planetary gear needle roller press-fitting machine according to claim 1, wherein: The needle roller feeding mechanism (5) includes a needle roller vibrating disk (51), a needle feeding device (52) oppositely arranged with respect to the center of the needle roller tray structure (4) and the assembly station, and a needle guiding tube connecting the needle feeding device (52) and the needle roller vibrating disk (51). The needle guiding tube is used to convey the needle roller workpiece (42) on the needle roller vibrating disk (51) into the needle feeding device (52), and the needle feeding device (52) drives the needle roller workpiece (42) to insert into the minute hand hole (41).

5. The planetary gear needle roller press-fitting machine according to claim 4, wherein: A limiting structure (53) is further provided between the needle feeding device (52) and the minute hand hole (41). The limiting structure (53) has a clamping end (54) extending to the opening of the needle feeding device (52). When the needle feeding device (52) stops working, the clamping end (54) blocks the needle roller workpiece (42) from detaching from the needle feeding device (52).

6. The planetary gear needle roller press according to claim 2, characterized in that: The needle roller tray structure (4) includes a minute hand disk (43) and a needle supporting disk (44) which are arranged overlapping up and down. A plurality of the minute hand holes (41) are provided on the minute hand disk (43), and the needle supporting disk (44) is provided with a needle dropping hole (45) for the needle roller workpiece (42) to pass through at the assembly station.

7. The planetary gear needle roller press according to claim 6, characterized in that: The needle dropping mechanism (6) includes a needle dropping push rod (61) movably passing through the minute hand hole (41) and the needle dropping hole (45), a needle guiding protrusion (62) extending from the bottom of the needle dropping hole (45) to the needle roller positioning cavity (71), and a needle guiding hole (63) provided on the needle guiding protrusion (62) and coaxially arranged with the minute hand hole (41) and the needle dropping hole (45). The needle dropping push rod (61) pushes the needle roller workpiece (42) to pass through the minute hand hole (41) and the needle dropping hole (45), and inserts it into the needle roller positioning cavity (71) along the needle guiding hole (63).

8. The planetary gear needle roller press-fitting machine according to any one of claims 1-7, characterized in that: The planetary gear feeding device includes a planetary gear feeding belt (21) arranged on one side of the frame (1), a feeding station arranged on the rotation path of the fixed groove (31) and before the assembly station, and a feeding robot (22) reciprocating between the planetary gear feeding belt (21) and the feeding station.

9. The planetary gear needle roller press according to claim 8, characterized in that: It further includes a finished product discharging device (8) oppositely arranged with respect to the planetary gear loading device. The finished product discharging device (8) includes a finished product discharging belt (81) arranged on the other side of the frame (1), a finished product station arranged on the rotation path of the fixed groove (31) and after the assembly station, and a discharging robot (82) reciprocating between the finished product discharging belt (81) and the finished product station.

10. The planetary gear needle roller press-fitting machine according to claim 9, characterized in that: A detection station located between the loading station and the assembly station is further provided on the rotation path of the fixed groove (31). Above the detection station, there is a planetary gear detection device (9). The planetary gear detection device (9) includes a detection rod (91) that moves up and down along the axis of the detection station, and a stroke detector (92) connected to the detection rod (91). The detection rod (91) can movably press against the planetary gear workpiece (32) in the detection station, and the stroke detector (92) sends a detection signal according to the pressing-down distance of the detection rod (91).

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