Planetary wheel dowel assembly method and associated dowel pneumatic delivery apparatus

Abstract

This invention relates to the field of engine assembly equipment processing, and provides a method for assembling planetary gear locating pins and a pneumatic conveying device for locating pins. The device includes a main frame, a material channel, a feeding assembly at one end of the material channel, and a locating pin stamping assembly. The feeding assembly includes a feeding tray connected to the material channel. Both the material channel and the feeding assembly are connected to the output end of a vibrator via a bracket. The locating pin stamping assembly includes an internal barrier connected to the material channel, a gas press, and an air pump. The barrier includes a socket connected to its internal channel, a plate inserted into the socket, and a reciprocating drive component for inserting and resetting the plate. Therefore, this invention can supply and feed locating pins using pneumatic pressure, automating the equipment, stamping and assembling the locating pins, ensuring installation stability, and preventing missing pins and pins falling out of the pin holes.

Description

Technical Field

[0001] This invention relates to the field of transmission assembly equipment processing, and more particularly to a method for assembling planetary gear locating pins and the related pneumatic conveying equipment for the locating pins. Background Technology

[0002] Planetary gears are gear systems that, in addition to rotating around their own axis like fixed-axis gears, also have their axis of rotation rotating around the axes of other gears along with the planet carrier. Rotation around their own axis is called "rotation," and rotation around the axes of other gears is called "revolution," just like the planets in the solar system, hence the name.

[0003] During planetary gear installation, the gears and gear shafts are positioned using locating pins. In existing technology, these locating pins are installed manually. Firstly, the locating pins are small and inconvenient to install. Secondly, after installation, the planetary gear with the locating pins installed needs to be transported to equipment where the locating pins are riveted and secured. During transport, due to the small size of the locating pins and the generally excessive fit between the pin hole and the locating pin, the locating pins often fall out of the pin hole. Thirdly, workers frequently miss installing the locating pins.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0005] To address the aforementioned deficiencies, the present invention aims to provide a planetary gear locating pin assembly method and a related locating pin pneumatic conveying device. This device can supply and feed the locating pins using pneumatic pressure, automating the equipment and performing stamping assembly of the locating pins to ensure installation stability and prevent missing installations and locating pins from falling out of the pin holes.

[0006] To achieve the above objectives, the present invention provides a pneumatic conveying device for planetary gear positioning pins, comprising a main frame, an elongated material channel mounted on the main frame, a feeding assembly located at one end of the material channel, and a positioning pin stamping assembly located at the other end of the material channel; the material channel has a conveying channel slightly larger than the cross-section of the positioning pin; the feeding assembly includes a feeding tray communicating with the material channel; both the material channel and the feeding assembly are connected to the output end of a vibrator via a bracket, and the base of the vibrator is mounted on the main frame; the positioning pin stamping assembly includes... The device includes an internal barrier connected to the material channel and arranged sequentially, a gas press, and an air pump that provides air to the gas press. The barrier includes a socket connected to its internal channel, a plate inserted into the socket, and a reciprocating drive for inserting and resetting the plate. The internal conveying channel of the gas press and the air inlet form a three-way structure. The reciprocating drive drives the plate to reciprocate once, and a single positioning pin enters the internal space of the gas press. After the plate is fully inserted into the socket, the air pump supplies gas to the gas press.

[0007] According to the planetary gear positioning pin pneumatic conveying device of the present invention, the feeding assembly further includes a screening device for screening in the state of the positioning pin and a recovery disc for recovering the screened material; the screening device includes a screening housing installed in the material channel and having a material distribution channel, and the material distribution channel has an inclined structure on the side near the recovery disc.

[0008] According to the planetary gear positioning pin pneumatic conveying device of the present invention, the feeding tray and the recovery tray are connected and have the same storage space; the storage space to the feeding end of the feeding tray is a downward inclined slope; the upper end of the recovery tray to the storage space is a downward inclined slope; the storage space is provided with a lifting conveying structure for conveying materials from the end of the recovery tray to the upper end of the feeding tray.

[0009] According to the planetary gear positioning pin pneumatic conveying device of the present invention, the lifting conveying structure includes a material tray and a telescopic device for driving the material tray to lift.

[0010] According to the planetary gear positioning pin pneumatic conveying device of the present invention, a pressure relief port communicating with its internal channel is provided on one side of the gas accelerator; a pressure relief valve is installed at the pressure relief port.

[0011] According to the planetary gear positioning pin pneumatic conveying device of the present invention, the output end of the gas ram is provided with a conveying hose.

[0012] According to the planetary gear positioning pin pneumatic conveying device of the present invention, the conveying hose is connected to the output end of the gas ramming device through a plug-in structure; the plug-in structure includes a socket provided at the output end of the gas ramming device and an insert cylinder provided at the end of the conveying hose and inserted into the socket.

[0013] The assembly method of the planetary gear positioning pin pneumatic conveying device according to the present invention includes the following steps: Step 1, installing the planetary gear to be assembled and the planetary carrier to the corresponding positions of the assembly fixture; Step 2, after assembly, the position of the pin hole on the planetary carrier will correspond to the output end of the positioning pin pneumatic conveying device; Step 3, starting the positioning pin pneumatic conveying device to complete the feeding of positioning pins; Step 4, during the positioning pin conveying process, the positioning pin pneumatic conveying device uses air pressure to press the positioning pin into the pin hole; Step 5, after the positioning pin is installed, the fixture is moved to the riveting device by the conveyor belt for the next positioning pin riveting process.

[0014] According to the assembly method of the planetary gear positioning pin of the present invention, in step two, the output end of the positioning pin pneumatic conveying device can be movable or fixed.

[0015] According to the assembly method of the planetary gear positioning pin of the present invention, in step two, the output end of the positioning pin pneumatic conveying device is fixed, and when the pin hole corresponds, the position of the tooling needs to be adjusted.

[0016] This invention provides a pneumatic conveying device for planetary gear positioning pins, comprising a main frame, a long, narrow material channel installed on the main frame, a feeding assembly at one end of the material channel, and a positioning pin stamping assembly at the other end of the material channel. When conveying the positioning pins, the feeding assembly feeds the material channel (orderly guiding several bulk positioning pins into the interior of the material channel). The positioning pins are conveyed inside the material channel. When a positioning pin enters the positioning pin stamping assembly, the assembly provides stamping power to press the positioning pin into the pin hole. The material channel has a conveying channel slightly larger than the cross-section of the positioning pin. Specifically, the maximum diameter d of the conveying channel's cross-sectional area is d1 < d < d2; where d1 is the minimum diameter of the conveyed positioning pin, and d2 is twice the minimum diameter of the conveyed positioning pin. The conveying channel is a cylindrical structure with a diameter slightly larger than the diameter of the positioning pin. Of course, the cross-sectional shape of this cylindrical structure can be other shapes, such as elliptical or square. The feeding assembly includes a feeding tray connected to the material channel; both the material channel and the feeding assembly are connected to the output end of a vibrator via a bracket, and the base of the vibrator is mounted on the main frame; during operation, the vibrator provides vibration at a predetermined frequency, which assists both the feeding tray's feeding operation (material enters the material channel from the feeding tray) and the material's conveying operation within the material channel. This invention utilizes pneumatic pressure to supply and feed the positioning pins, automating the equipment. The positioning pins are stamped and assembled to ensure installation stability and prevent omissions or pins falling out of their holes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the invention from another angle;

[0019] Figure 3 This is a connection diagram of the material channel, the feeding tray, and the recovery tray of the present invention;

[0020] Figure 4 This is a structural diagram of the expansion joint;

[0021] Figure 5 This is a diagram showing the connection between the vibrator and the feed channel;

[0022] Figure 6 This is a structural diagram of the material feeding assembly;

[0023] Figure 7 This is a structural diagram of a sieve;

[0024] Figure 8 This is a structural diagram of the locating pin stamping assembly;

[0025] Figure 9 yes Figure 8 Enlarged view of section B;

[0026] Figure 10 This is a diagram of the internal structure of the stamping press;

[0027] Figure 11 It is a diagram showing the fit between the tooling placed on the conveyor belt and the output end of the conveyor hose;

[0028] In the diagram, 000-main frame, 100-material channel, 200-feeding assembly, 300-positioning pin stamping assembly, 400-vibrator, 500-conveying hose, 1-feeding tray, 101-collecting tray, 102-expansion joint, 5-barrier, 51-insertion, 52-insertion plate, 53-reciprocating drive component, 6-stamping unit, 65-air inlet, 63-insertion, 631-embedded cylinder, 632-fixed pin, 633-positioning ring, 7-air pump, 8-screener, 811-material distribution channel, 9-recovery tray, 911-sloping structure, 10-storage space. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0030] See Figure 1 and Figure 2This invention provides a pneumatic conveying device for planetary gear positioning pins. The device includes a main frame 000, a long strip-shaped material channel 100 installed on the main frame 000, a feeding component 200 located at one end of the material channel 100, and a positioning pin stamping component 300 located at the other end of the material channel 100. When conveying the positioning pins, the feeding component 200 feeds the material channel 100 (orderly guiding several bulk positioning pins into the interior of the material channel 100). The positioning pins are conveyed inside the material channel 100. When the positioning pins enter the positioning pin stamping component 300, the positioning pin stamping component 300 provides stamping power to the positioning pins, thereby stamping the positioning pins into the pin holes.

[0031] The material channel 100 has a conveying channel inside that is slightly larger than the cross-section of the positioning pin. Specifically, the maximum diameter d of the cross-sectional area of ​​the conveying channel is d1 < d < d2; where d1 is the minimum diameter of the conveyed positioning pin; and d2 is twice the minimum diameter of the conveyed positioning pin. In this example, the conveying channel is a cylindrical structure with a diameter slightly larger than the diameter of the positioning pin. Of course, the cross-sectional shape of the cylindrical structure can be other shapes, such as elliptical or square.

[0032] See Figure 3 and Figure 5 The feeding assembly 200 includes a feeding tray 1 that communicates with the material channel 100; both the material channel 100 and the feeding assembly 200 are connected to the output end of a vibrator 400 via a bracket, and the base of the vibrator 400 is installed on the overall frame 000; during operation, the vibrator provides vibration at a predetermined frequency, which assists the feeding work of the feeding tray 1 (material enters the material channel 100 from the feeding tray 1) on the one hand, and assists the conveying work of the material in the material channel 100 on the other hand (for example, in this example, the feeding tray 1 is a long arc-shaped structure, so during the conveying process, it is inevitable that the positioning pin will come into contact with the inner wall of the conveying channel, and the conveying will stop due to the friction).

[0033] See Figure 3 and Figure 7In this example, in order to ensure that the feeding tray 1 feeds normally and to avoid the material blocking the feed inlet of the material channel 100 due to different feeding states during the feeding process, the feeding assembly 200 also includes a screener 8 for screening in the state of the positioning pin and a recovery tray 9 for recycling the screened material; the screener 8 includes a screening housing 81 installed in the material channel 100 and having a material distribution channel 811. The material distribution channel 811 has an inclined structure 911 on the side near the recovery tray 9. As shown in the figure, the material distribution channel 811 is an open structure with three sides open. When the screener 8 is performing screening (with the vibrator 400 providing auxiliary vibration), the axis of the positioning pin during normal conveying is parallel to the conveying direction of the material distribution channel 811. When the positioning pin is tilted in other directions, it will be in an unstable state due to the lack of positioning by the material distribution channel 811. Under the auxiliary vibration of the vibrator 400, these unstable positioning pins are very likely to fall out from the inclined structure 911 (falling into the recovery tray 9).

[0034] See Figure 4 and Figure 6 The feeding tray 1 and the recycling tray 9 are connected, sharing the same storage space 10. This structure allows the material recycled by the recycling tray 9 to be directly fed into the feeding tray 1 without manual material transfer. As shown in the figure, the storage space 10 to the feeding end of the feeding tray 1 forms a downward-sloping slope; the upper end of the recycling tray 9 to the storage space 10 also forms a downward-sloping slope.

[0035] The storage space 10 is equipped with a lifting conveying structure that transports materials from the end of the recovery tray 9 to the upper end of the unloading tray 1. This lifting conveying structure includes a holding tray 101 and a telescopic device 102 that drives the holding tray 101 to lift. In this example, the telescopic device 102 can be a cylinder, a hydraulic cylinder, or even a lifting structure with lifting functions. It should be noted that this lifting conveying structure operates at a relatively long frequency. Generally, material conveying only begins when the holding tray 101 has accumulated a certain amount. Furthermore, during the lifting conveying operation, the vibrator 400 must completely stop to prevent the positioning pin from falling from the recovery tray 9 to below the holding tray 101 after the holding tray 101 rises due to vibration, which would affect the resetting of the holding tray 101 and further impact the material collection process.

[0036] See Figure 8 , Figure 9 and Figure 10The positioning pin stamping assembly 300 includes a barrier 5, a gas press 6, and an air pump 7 that provides an air source for the gas press 6, all connected internally to the material channel 100 and arranged sequentially. Positioning pins conveyed by the material channel 100 enter the barrier 5 and the press 6 through a conveying channel. The barrier 5 includes a socket 51 communicating with its internal channel, an insert plate 52 inserted into the socket 51, and a reciprocating drive 53 that drives the insert plate 52 for insertion and resetting. In this example, the reciprocating drive 53 is a telescopic cylinder. The air pump 7 is connected to the reciprocating drive 53 and the gas press 6 via air passages. The internal conveying channel of the gas press 6 is connected to the air inlet 65. The three-way structure is formed. Specifically, the air pump 7 is connected to the air inlet 65 through the air passage. During operation, the reciprocating drive 53 drives the insert plate 52 to reciprocate once (from closed to open and then back to closed). During the drive process, a single positioning pin (the positioning pin is driven into the gas press 6 by the vibration of the vibrator 400) enters the internal space of the gas press 6. At the same time, after the insert plate 52 is inserted into the socket 51, it serves two purposes: firstly, to prevent the positioning pin located above from falling further, ensuring that the gas press 6 only presses a single positioning pin; secondly, to seal the internal space of the gas press 6 (except for the pressing port), ensuring the airtightness of the gas press 6.

[0037] The gas rammer has a pressure relief port on one side that communicates with its internal channel; a pressure relief valve (not shown in the figure) is installed at the pressure relief port to prevent the gas rammer from being damaged due to excessive internal gas pressure.

[0038] After the insert plate 52 is fully inserted into the socket 51, the air pump 7 pressurizes the gas pressurizer 6. The output end of the gas pressurizer 6 is equipped with a delivery hose 500. The output port of the delivery hose 500 is fixedly installed on the workbench and corresponds to the pin hole position on the planetary carrier of the tooling.

[0039] When a single locating pin enters the internal space of the gas press 6, the air pump 7 starts and delivers pressurizing gas into the gas press 6. The pressurizing gas drives the locating pin to press through the delivery hose 500 to the pin hole position on the planetary carrier of the tooling.

[0040] Preferably, the cross-sectional area S of the delivery hose 500 is S1 < S < S2, where S1 is the cross-sectional area of ​​the positioning pin and S2 is 1.5 times the cross-sectional area of ​​the positioning pin. This setting ensures the air pressure of the positioning pin during delivery and reduces the loss of air pressure from the gap between the positioning pin and the delivery hose 500.

[0041] Furthermore, to avoid missing pins during assembly, several locating pins can be grouped together during installation (for example, a planetary gear mounted on a tooling requires three locating pins, so these are grouped into three groups). Within each group, the feeding frequency between the locating pins is relatively short, while the interval frequency between groups is longer. This facilitates worker inspection and prevents missing pins from being installed.

[0042] For ease of equipment inspection, the delivery hose 500 is connected to the output end of the gas compressor 6 via a plug-in structure. This plug-in structure includes a socket 63 at the output end of the gas compressor 6 and an insert 631 at the end of the delivery hose 500, inserted into the socket 63. A fixing pin 632 is installed on the socket 63 to position it, and a positioning ring 633 that cooperates with the fixing pin 632 is provided at the insert 631. During inspection, the fixing pin 632 needs to be pulled out, allowing the insert 631 to be removed from the socket 63. During installation, simply reinsert the insert 631 into the socket 63, and then reinsert the fixing pin 632 (the output end of the fixing pin 632 is inserted into the positioning ring 633).

[0043] Furthermore, based on the aforementioned device, the present invention provides an assembly method for a pneumatic conveying device adapted to planetary gear positioning pins, the assembly method comprising:

[0044] Step 1: Install the planetary gears and planetary carrier to be assembled into their corresponding positions on the assembly fixture; (For specific fixtures and assembly methods, please refer to Patent No. 202210830064.9, entitled Differential Assembly Assembly Method).

[0045] Step 2: After assembly, the position of the pin hole on the planetary carrier will correspond to the output end of the positioning pin pneumatic conveying device. The output end of the positioning pin pneumatic conveying device can be movable or fixed. The movable type can be, for example, a handheld gun type, while the fixed structure fixes the output end of the positioning pin pneumatic conveying device to the frame.

[0046] In this example, the output end of the positioning pin pneumatic conveying device is fixed, and the position of the tooling needs to be adjusted when the pin holes are aligned.

[0047] Step 3: Start the pneumatic conveying equipment for the positioning pins to complete the feeding and supply of positioning pins;

[0048] Step four: During the positioning pin conveying process, the positioning pin pneumatic conveying equipment uses air pressure to press the positioning pin into the pin hole.

[0049] Step five: After the locating pins are installed, the tooling is moved to the riveting equipment by the conveyor belt for the next step of locating pin riveting. The conveyor belt transports the tooling and the assembled planetary gears (including the locating pins) smoothly, which reduces the chance of the locating pins falling out of the pin holes.

[0050] In summary, this invention provides a pneumatic conveying device for P planetary gear positioning pins, comprising a main frame, a long, narrow material channel installed on the main frame, a feeding assembly at one end of the material channel, and a positioning pin stamping assembly at the other end of the material channel. When conveying the positioning pins, the feeding assembly feeds the material channel (orderly guiding several bulk positioning pins into the interior of the material channel). The positioning pins are conveyed within the material channel. When a positioning pin enters the positioning pin stamping assembly, the assembly provides stamping power to press the positioning pin into the pin hole. The material channel has a conveying channel slightly larger than the cross-section of the positioning pin. Specifically, the maximum diameter d of the conveying channel's cross-sectional area is d1 < d < d2; where d1 is the minimum diameter of the conveyed positioning pin, and d2 is twice the minimum diameter of the conveyed positioning pin. The conveying channel is a cylindrical structure with a diameter slightly larger than the diameter of the positioning pin. Of course, the cross-sectional shape of this cylindrical structure can be other shapes, such as elliptical or square. The feeding assembly includes a feeding tray connected to the material channel; both the material channel and the feeding assembly are connected to the output end of a vibrator via a bracket, and the base of the vibrator is mounted on the main frame; during operation, the vibrator provides vibration at a predetermined frequency, which assists both the feeding tray's feeding operation (material enters the material channel from the feeding tray) and the material's conveying operation within the material channel. This invention utilizes pneumatic pressure to supply and feed the positioning pins, automating the equipment. The positioning pins are stamped and assembled to ensure installation stability and prevent omissions or pins falling out of their holes.

[0051] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A pneumatic conveying device for planetary gear positioning pins, characterized in that, It includes a main frame, a long strip-shaped material channel installed on the main frame, a feeding assembly at one end of the material channel, and a positioning pin stamping assembly at the other end of the material channel; the material channel is provided with a conveying channel slightly larger than the cross-section of the positioning pin. The feeding assembly includes a feeding tray that communicates with the feeding channel; both the feeding channel and the feeding assembly are connected to the output end of a vibrator via a bracket, and the base of the vibrator is mounted on the main frame. The positioning pin stamping assembly includes an isolator, a gas press, and an air pump that provide air supply to the gas press, all of which are connected to the material channel and arranged in sequence. The isolator includes a socket that is connected to its internal channel, a plate that is inserted into the socket, and a reciprocating drive that drives the plate to insert and reset. The internal delivery channel and air inlet of the gas rammer form a three-way structure; The reciprocating drive unit drives the insert plate to reciprocate once, and a single positioning pin enters the internal space of the gas press. After the insert plate is fully inserted into the socket, the air pump supplies gas pressure to the gas press.

2. The planetary gear positioning pin pneumatic conveying device according to claim 1, characterized in that, The feeding assembly also includes a screening device for screening in the state of positioning pins and a recovery tray for recovering the screened material. The screener includes a screening housing installed in the material channel and having a material distribution channel, wherein the material distribution channel has an inclined structure on the side near the recovery disc.

3. The planetary gear positioning pin pneumatic conveying device according to claim 2, characterized in that, The feeding tray and the recycling tray are connected and have the same storage space. The material storage space and the material feeding end of the feeding tray are inclined downwards. The upper end of the recycling tray to the storage space is a downward sloping structure; The storage space is equipped with a lifting conveyor structure that transports materials from the end of the recycling tray to the top of the unloading tray.

4. The planetary gear positioning pin pneumatic conveying device according to claim 3, characterized in that, The lifting conveyor structure includes a material tray and a telescopic device that drives the material tray to lift.

5. The planetary gear positioning pin pneumatic conveying device according to any one of claims 1 to 4, characterized in that, The gas rammer has a pressure relief port on one side that communicates with its internal channel; a pressure relief valve is installed at the pressure relief port.

6. The planetary gear positioning pin pneumatic conveying device according to any one of claims 1 to 4, characterized in that, The output end of the gas ram is equipped with a delivery hose.

7. The planetary gear positioning pin pneumatic conveying device according to claim 6, characterized in that, The delivery hose is connected to the output end of the gas rammer via a plug-in structure; the plug-in structure includes a socket at the output end of the gas rammer and an insert at the end of the delivery hose that is inserted into the socket.

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