Automatic pin mounting device for powder metallurgy planetary gear carrier

Abstract

The utility model discloses an automatic pin mounting device for a powder metallurgy planetary gear carrier, the planetary gear carrier is provided with a plug pin hole, the plug pin hole is used for mounting a cylindrical pin, the automatic pin mounting device comprises a mounting seat, a clamp assembly and a pin feeding assembly, the base is slidably connected with a first push plate, the first push plate is provided with a containing groove, and the containing groove is provided with a second push plate. And the first push plate is connected with and driven by a first driving piece. The clamp assembly is used for fixedly placing the planetary gear carrier and arranged in the containing groove. The pin feeding assembly is connected to the mounting base and located on one side above the clamp assembly, the pin feeding assembly comprises an upper limiting plate, a second push plate and a lower limiting plate which are arranged from top to bottom, the upper limiting plate is provided with a first pin feeding channel, the second push plate is provided with a second pin feeding channel, and the lower limiting plate is provided with a second pin feeding channel. The lower limiting plate is used for supporting the second push plate and can exactly move to the position over the clamp assembly, and the second push plate is connected with and driven by a second driving part.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy, in particular to an automatic pinning device for a powder metallurgy planetary gear frame. Background Art

[0002] Powder metallurgy products with pins require assembly. The gear carrier is manufactured using powder metallurgy, while the cylindrical pins are steel products. These two components are securely joined together through press-fitting and the proper clearance. Conventional pin assembly of planetary gear carriers requires manual placement of the pins, resulting in inefficient handling. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an automatic pinning device for a powder metallurgy planetary gear carrier, which can automatically position and place cylindrical pins of the planetary gear carrier, replacing manual operations and improving production efficiency.

[0004] According to the powder metallurgy planetary gear frame automatic pinning device of the first embodiment of the present invention, the planetary gear frame has a pin hole, and the pin hole is used to install a cylindrical pin. The powder metallurgy planetary gear frame automatic pinning device includes a mounting base, a clamp assembly and a pin feeding assembly. The base is slidably connected to a first push plate, and the first push plate is provided with a receiving groove. The first push plate is connected to and driven by a first driving member. The clamp assembly is used to fix the planetary gear frame, and the clamp assembly is provided in the receiving groove. The pin feeding assembly is connected to the mounting base and is located on one side above the clamp assembly. The pin feeding assembly includes an upper limit plate, a second push plate and a lower limit plate arranged from top to bottom. The upper limit plate is provided with a first pin feeding channel, and the second push plate is provided with a second pin feeding channel. The lower limit plate is used to support the second push plate so that it can move just above the clamp assembly. The second push plate is connected to and driven by the second driving member. Among them, when the second push plate is in the initial position, the first pin feeding channel is connected to the second pin feeding channel, the cylindrical pin enters the second pin feeding channel through the first pin feeding channel, and the driving member drives the second push plate to move to just above the clamp assembly. The second pin feeding channel corresponds to the pin hole, and the cylindrical pin enters the pin hole.

[0005] The automatic pinning device for a powder metallurgy planetary gear carrier according to an embodiment of the present invention has at least the following beneficial effects: activating the first driving member, the first push plate moves to a position where the receiving groove is fully exposed. The worker places the planetary gear carrier on the fixture assembly, ensuring that the planetary gear carrier is stably and accurately fixed within the fixture assembly, ensuring that the cylindrical pins in the pin feed assembly have passed through the first pin feed channel and entered the second pin feed channel, and that the second push plate is in its initial position. Activating the second driving member drives the second push plate to move from its initial position until it is directly above the fixture assembly. During this movement, the cylindrical pins will not fall due to inertia until the relative position of the second push plate and the fixture assembly changes, and the second pin feed channel gradually aligns with the pin insertion hole on the planetary gear carrier. At this point, the cylindrical pins in the second pin feed channel automatically enter the pin insertion hole under the action of gravity or an auxiliary pushing mechanism, completing the positioning and placement of the cylindrical pins. The second driving member then begins to reverse motion, returning the second push plate to its initial position, preparing for the next planetary gear carrier to undergo automatic pinning. Automated devices enable quick and accurate positioning of the planetary gear carrier's cylindrical pins, significantly improving production efficiency and reducing labor costs. Operators simply place the planetary gear carrier on the fixture assembly and initiate the automatic pin installation process, eliminating complex operating skills and simplifying the process. This reduces operational complexity and avoids potential manual errors, such as inaccurate cylindrical pin positioning and loose placement, thereby improving product quality and stability. Furthermore, the system can be adapted to meet the needs of planetary gear carriers of varying specifications and requirements. Furthermore, its modular design facilitates easy expansion to meet diverse production requirements.

[0006] According to some embodiments of the present invention, the upper limit plate is provided with a pin delivery tube, and the pin delivery tube is externally connected to a feeding assembly for automatically allowing the cylindrical pin to enter the first pin delivery channel.

[0007] According to some embodiments of the present invention, the pin feeding tube is coaxially arranged with the first pin feeding channel, and the aperture of the pin feeding tube gradually decreases toward the first pin feeding channel to guide the cylindrical pin to enter the first pin feeding channel.

[0008] According to some embodiments of the present invention, the mounting seat is provided with a limiting boss, and the limiting boss is located on a side away from the pin delivery assembly to limit the movement of the first push plate.

[0009] According to some embodiments of the present invention, the first driving member and the second driving member are both cylinders.

[0010] According to some embodiments of the present invention, the clamp assembly includes a base and a guide plate, the base is embedded in the accommodating groove, and a positioning groove is provided on the top of the base. When the planetary gear carrier is placed in the positioning groove, the guide plate covers the top of the planetary gear carrier to guide the cylindrical pin to be inserted into the pin hole.

[0011] According to some embodiments of the present invention, the guide plate has a calibration groove, the base is provided with a positioning pin, the positioning pin can be inserted into the calibration groove, and the guide plate is provided with a guide hole, the position of the guide hole corresponds to the position of the pin hole.

[0012] According to some embodiments of the present invention, the number of the calibration groove and the number of the positioning pins are at least two.

[0013] According to some embodiments of the present invention, the base is movably provided with a spring pin, the spring pin is connected to a limit spring, the limit spring is located at the bottom end of the base, and the spring pin can be inserted into the pin hole and partially extend into the guide hole.

[0014] According to some embodiments of the present invention, the base is provided with a transmission hole and a limiting hole, the upper half of the elastic pin is located in the transmission hole, and the lower half of the elastic pin is located in the limiting hole.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic diagram of an automatic pinning device for a powder metallurgy planetary gear carrier according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the planetary gear carrier of the automatic pinning device for a powder metallurgy planetary gear carrier according to an embodiment of the present invention being assembled to a fixture assembly.

[0019] Figure markings: mounting seat 100; limiting boss 101; first push plate 110; accommodating groove 111; clamp assembly 200; positioning groove 201; limiting block 201; transmission hole 202; base 210; guide plate 220; guide hole 221; calibration groove 222; positioning pin 223; spring pin 230; limiting spring 231; pin delivery assembly 300; upper limiting plate 310; first pin delivery channel 311; second push plate 320; second pin delivery channel 321; lower limiting plate 330; pin delivery tube 340; planetary gear carrier 400; cylindrical pin 410; pin hole 420. DETAILED DESCRIPTION

[0020] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise expressly defined, terms such as "set," "install," and "connect" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meanings of these terms in the present utility model based on the specific content of the technical solution. In the description of this utility model, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with such embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of these terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples. In the description of this specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with such embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of these terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0024] Powder metallurgy products with pins require assembly. The gear carrier is manufactured using powder metallurgy, while the cylindrical pins are steel products. These two components are securely joined together through press-fitting and the proper clearance. Conventional pin assembly of planetary gear carriers requires manual placement of the pins, resulting in inefficient handling.

[0025] For this purpose, refer to Figure 1 and Figure 2 The present invention provides an automatic pinning device for a powder metallurgy planetary gear carrier 400. The planetary gear carrier 400 has a pin hole 420 for receiving a cylindrical pin 410. The device includes a mounting base 100, a fixture assembly 200, and a pin feed assembly 300. The base 210 is slidably connected to a first push plate 110, which is provided with a receiving groove 111. The first push plate 110 is connected to and driven by a first driving member. The fixture assembly 200 is used to securely position the planetary gear carrier 400 and is disposed within the receiving groove 111. The pin feed assembly 300 is connected to the mounting base 100 and is located on one side above the clamp assembly 200. The pin feed assembly 300 includes an upper limit plate 310, a second push plate 320, and a lower limit plate 330 arranged from top to bottom. The upper limit plate 310 is provided with a first pin feed channel 311, the second push plate 320 is provided with a second pin feed channel 321, and the lower limit plate 330 is used to support the second push plate 320 so that it can move just above the clamp assembly 200. The second push plate 320 is connected and driven by the second driving member. Among them, when the second push plate 320 is in the initial position, the first pin feed channel 311 is connected to the second pin feed channel 321, and the cylindrical pin 410 enters the second pin feed channel 321 through the first pin feed channel 311. The driving member drives the second push plate 320 to move just above the clamp assembly 200. The second pin feed channel 321 corresponds to the pin hole 420, and the cylindrical pin 410 enters the pin hole 420.

[0026] It is understood that after activating the first driving member, the first push plate 110 moves to a position where the receiving groove 111 is fully exposed. The worker then places the planetary gear carrier 400 on the fixture assembly 200, ensuring that the planetary gear carrier 400 is stably and accurately fixed within the fixture assembly 200, that the cylindrical pin 410 in the pin feed assembly 300 has passed through the first pin feed channel 311 and entered the second pin feed channel 321, and that the second push plate 320 is in its initial position. The second driving member is then activated, driving the second push plate 320 to move from its initial position until it is directly above the fixture assembly 200. During this movement, due to inertia, the cylindrical pin 410 will not fall until the relative position of the second push plate 320 and the fixture assembly 200 changes, and the second pin feed channel 321 gradually aligns with the pin hole 420 on the planetary gear carrier 400. At this point, the cylindrical pin 410 located in the second pin delivery channel 321 automatically enters the pin hole 420 under the influence of gravity or the auxiliary pushing mechanism, completing the positioning and placement of the cylindrical pin 410. The second driving member begins reverse motion, returning the second push plate 320 to its initial position, and preparing the next planetary gear carrier 400 for automatic pinning of the cylindrical pin 410. This automated device can quickly and accurately position and place the cylindrical pin 410 of the planetary gear carrier 400, greatly improving production efficiency and reducing labor costs. The operator only needs to place the planetary gear carrier 400 on the fixture assembly 200 and start the automatic pinning process. This eliminates the need for complex operating skills, reduces operational difficulty, and avoids errors that may occur during manual operation, such as inaccurate positioning or loose placement of the cylindrical pin 410. This improves product quality and stability. Furthermore, the device can be adapted to meet the different specifications and requirements of the planetary gear carrier 400. Furthermore, its modular design makes expansion simple and convenient, meeting diverse production needs.

[0027] It should be noted that when the cylindrical pin 410 enters the second pin delivery channel 321, the lower limit plate 330 is located below the second push plate 320, and its top surface can abut the bottom of the cylindrical pin 410, preventing the cylindrical pin 410 from falling off. To ensure that the cylindrical pin 410 does not fall off during the movement of the second push plate 320 driven by the second driving member, the speed must be sufficient to ensure that the cylindrical pin 410 does not fall off due to inertia, thereby ensuring that the pin delivery step can be completed smoothly.

[0028] Reference Figure 1 and Figure 2The upper limit plate 310 is provided with a pin feeding tube 340, and the pin feeding tube 340 is connected to the feeding assembly, which is used for the cylindrical pin 410 to automatically enter the first pin feeding channel 311. The pin feeding tube 340 is connected to the feeding assembly to ensure that the cylindrical pin 410 can automatically and continuously enter the first pin feeding channel 311. Optionally, the pin feeding tube 340 is made of stainless steel with good wear resistance and corrosion resistance. The feeding assembly consists of a feeding wheel driven by a motor and a hopper. The cylindrical pin 410 is pushed to the pin feeding tube 340 by the feeding wheel in the hopper, and enters the first pin feeding channel 311 through the pin feeding tube 340.

[0029] Reference Figure 1 and Figure 2 Furthermore, the pin feeding tube 340 is coaxially arranged with the first pin feeding channel 311, and the aperture of the pin feeding tube 340 gradually decreases in the direction approaching the first pin feeding channel 311, so as to guide the cylindrical pin 410 to enter the first pin feeding channel 311. The pin feeding tube 340 is coaxially arranged with the first pin feeding channel 311, and the aperture of the pin feeding tube 340 gradually decreases, forming a tapered structure. This design enables the cylindrical pin 410 to smoothly enter the first pin feeding channel 311 under the push of gravity and the feeding wheel, ensuring the stability and accuracy of the pin feeding process, realizing the automatic feeding and pin installation process of the cylindrical pin 410, and greatly improving the degree of automation and production efficiency.

[0030] Reference Figure 1 and Figure 2 The mounting base 100 is provided with a limiting boss 101, located away from the pin feed assembly 300, to limit the movement of the first push plate 110. The limiting boss 101 is provided on the mounting base 100 to limit the range of movement of the first push plate 110. The limiting boss 101 is made of cemented carbide material, which has sufficient strength and wear resistance. When the first push plate 110 moves to the limiting boss 101, the cylinder stops working, ensuring that the first push plate 110 does not move excessively.

[0031] Reference Figure 1 and Figure 2 The first and second drive members are both pneumatic cylinders. Both the first and second drive members use pneumatic cylinders as their power source. Pneumatic cylinders offer advantages such as simple structure, rapid operation, and ease of control, meeting the requirements of automatic pin assembly devices for drive members.

[0032] Reference Figure 1 and Figure 2The fixture assembly 200 includes a base 210 and a guide plate 220. The base 210 is embedded in the receiving groove 111. The top of the base 210 is provided with a positioning groove 201. When the planetary gear carrier 400 is placed in the positioning groove 201, the guide plate 220 covers the planetary gear carrier 400 and is used to guide the cylindrical pin 410 into the pin hole 420. The base 210 is embedded in the receiving groove 111 and is provided with a positioning groove 201 on the top, which is used to fix the planetary gear carrier 400. The guide plate 220 covers the planetary gear carrier 400 and is provided with a guide hole 221 to ensure that the cylindrical pin 410 can be accurately inserted into the pin hole 420.

[0033] Reference Figure 1 and Figure 2 The guide plate 220 has a calibration groove 222, and the base 210 is provided with a positioning pin 223. The positioning pin 223 can be plugged into the calibration groove 222. The guide plate 220 is provided with a guide hole 221. The position of the guide hole 221 corresponds to the position of the pin hole 420. The guide plate 220 is provided with a calibration groove 222, and the base 210 is provided with a positioning pin 223. The positioning pin 223 can be plugged into the calibration groove 222 to ensure that the relative position between the guide plate 220 and the base 210 is fixed. The position of the guide hole 221 precisely corresponds to the position of the pin hole 420, which improves the accuracy and efficiency of the pin installation. The number of the calibration groove 222 and the positioning pin 223 are both set to two, respectively located on both sides of the guide plate 220. The stability and reliability of the clamp assembly 200 are increased, ensuring that the planetary gear carrier 400 will not shift or tilt during the pin installation process.

[0034] Reference Figure 1 and Figure 2The base 210 is movably provided with a spring pin 230, which is connected to a limit spring 231. The limit spring 231 is located at the bottom end of the base 210. The spring pin 230 can be inserted into the latch hole 420 and partially extends into the guide hole 221. It should be noted that a gear rack is placed on the base, and a guide plate 220 with a guide hole 221 is placed on the gear rack. The guide hole 221 of the guide plate 220 corresponds to the latch hole 420 of the gear rack. The latch hole 420 is further provided with a spring pin 230 connected to the limit spring 231, which serves as a limiter and buffer. During processing, the cylindrical pin 410 is inserted into the guide hole 221, abutting against the spring pin 230 that partially extends into the guide hole 221. The spring pin 230 provides support for the pin. The pin is then pressed down by the punch on the machine. With the cooperation of the guide hole 221 and the spring pin 230, the cylindrical pin 410 is pressed down along the spring pin 230 and pressed into the latch hole 420. The guide hole 221 acts as a transition section, ensuring successful latching without affecting the mechanical properties of the two assembled parts. This reduces the chance of press-fitting accidents caused by the pin being unstable and falling during the latching process, and improves processing efficiency. A spring pin 230 is movably provided on the seat and is connected to a limit spring 231. When the cylindrical pin 410 is inserted into the latch hole 420, the spring pin 230 partially extends into the guide hole 221 under the action of the limit spring 231, providing positioning and fixing, ensuring the stability of the cylindrical pin 410 after insertion into the latch hole 420.

[0035] Reference Figure 1 and Figure 2 The base 210 is provided with a transmission hole 202 and a stop hole. The upper half of the spring pin 230 is located in the transmission hole 202, while the lower half of the spring pin 230 is located in the stop hole. The base 210 is provided with a transmission hole 202 and a stop hole. The upper half of the spring pin 230 is located in the transmission hole 202 and is connected to the stop spring 231. The lower half of the spring pin 230 is located in the stop hole, ensuring that the spring pin 230 does not deviate from its trajectory during extension and retraction.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An automatic pinning device for a powder metallurgy planetary gear carrier, wherein the planetary gear carrier has a pin hole for installing a cylindrical pin, characterized in that: include: The mounting seat is slidably connected with a first push plate, the first push plate is provided with a receiving groove, and the first push plate is connected to and driven by a first driving member; A clamp assembly, used for fixing and placing the planetary gear carrier, wherein the clamp assembly is arranged in the receiving groove; A pin delivery assembly is connected to the mounting seat and is located on one side above the clamp assembly. The pin delivery assembly includes an upper limit plate, a second push plate and a lower limit plate arranged from top to bottom. The upper limit plate is provided with a first pin delivery channel. The second push plate is provided with a second pin delivery channel. The lower limit plate is used to support the second push plate to move just above the clamp assembly. The second push plate is connected to and driven by a second driving member. Among them, when the second push plate is located at the initial position, the first pin feeding channel is connected with the second pin feeding channel, the cylindrical pin enters the second pin feeding channel through the first pin feeding channel, the driving member drives the second push plate to move to just above the clamp assembly, the second pin feeding channel corresponds to the pin hole, and the cylindrical pin enters the pin hole.

2. The automatic pinning device for a powder metallurgy planetary gear carrier according to claim 1, characterized in that: The upper limit plate is provided with a pin delivery tube, and the pin delivery tube is externally connected to a material delivery component for the cylindrical pin to automatically enter the first pin delivery channel.

3. The automatic pinning device for a powder metallurgy planetary gear carrier according to claim 2, characterized in that: The pin delivery tube is coaxially arranged with the first pin delivery channel, and the aperture of the pin delivery tube gradually decreases toward the direction approaching the first pin delivery channel so as to guide the cylindrical pin to enter the first pin delivery channel.

4. The automatic pinning device for a powder metallurgy planetary gear carrier according to claim 1, characterized in that: The mounting seat is provided with a limiting boss, and the limiting boss is located at a side away from the pin delivery assembly to limit the movement of the first push plate.

5. The automatic pinning device for a powder metallurgy planetary gear carrier according to claim 1, characterized in that: The first driving member and the second driving member are both cylinders.

6. The automatic pinning device for a powder metallurgy planetary gear carrier according to claim 1, characterized in that: The clamp assembly includes a base and a guide plate. The base is embedded in the accommodating groove. A positioning groove is provided on the top of the base. When the planetary gear carrier is placed in the positioning groove, the guide plate covers the top of the planetary gear carrier to guide the cylindrical pin to be inserted into the pin hole.

7. The automatic pinning device for a powder metallurgy planetary gear carrier according to claim 6, characterized in that: The guide plate has a marking groove, the base is provided with a positioning pin, the positioning pin can be plugged into the marking groove, the guide plate is provided with a guide hole, and the position of the guide hole corresponds to the position of the pin hole.

8. The automatic pinning device for a powder metallurgy planetary gear carrier according to claim 7, characterized in that: The number of the marking grooves and the number of the positioning pins are at least two.

9. The automatic pinning device for a powder metallurgy planetary gear carrier according to claim 7, characterized in that: The base is movably provided with an elastic pin, the elastic pin is connected to a limit spring, the limit spring is located at the bottom end of the base, and the elastic pin can be inserted into the pin hole and partially extend into the guide hole.

10. The automatic pinning device for a powder metallurgy planetary gear carrier according to claim 9, characterized in that: The base is provided with a transmission hole and a limiting hole, the upper half of the elastic pin is located in the transmission hole, and the lower half of the elastic pin is located in the limiting hole.

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