A deburring device for plastic gears in a gear pump
Through the innovative design of the rotating shaft, elastic pusher, and half gear, the problem of complex structure and high cost of existing plastic gear deburring equipment has been solved. It realizes automatic feeding and uniform deburring of plastic gears, simplifies the equipment structure, and reduces costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SUZHOU MACXI FLUID TECH CO LTD
- Filing Date
- 2024-04-25
- Publication Date
- 2026-07-14
AI Technical Summary
Existing technologies for removing burrs from plastic gears are complex in structure, costly, and require complex control programs, making it difficult to simplify operation, ensure safety, and increase the difficulty of equipment manufacturing.
The design employs a combination of a rotating shaft, an elastic pusher, and a half-gear. The stable rotation of the rotating shaft enables automatic feeding and rotation of the plastic gear. The friction between the half-gear and the plastic gear is used for limiting the movement, eliminating the need for a robotic arm and a rotating robotic arm, thus simplifying the equipment structure.
This technology enables a uniform deburring process for plastic gears without the need for complex control programs, reducing equipment costs and manufacturing difficulty while improving operational safety.
Smart Images
Figure CN118288146B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of plastic gear processing technology, and specifically to a deburring device for plastic gears inside a gear pump. Background Technology
[0002] A gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gears to transport or pressurize liquids. It consists of two gears, a pump body, and front and rear covers forming two enclosed spaces.
[0003] Gears in gear pumps are made of either metal or plastic, each with its own advantages and disadvantages. Plastic gears are injection molded, and compared to metal gears, plastic gears experience significantly less shrinkage during cooling, which is highly beneficial for improving gear precision.
[0004] Because plastic gears are injection molded, a large number of burrs remain on the gear teeth after injection molding and cooling, affecting their use. Therefore, plastic gears need to be deburred before being put into use. Existing technologies for deburring plastic workpieces often employ dry ice blasting. For example, the utility model patent with application number CN201521134511.9 and publication number CN205326089U, entitled "A Deburring and Cleaning Device," discloses a dry ice spray gun connected to a dry ice supply device. The dry ice supply device, product transfer fixture, and robotic arm are electrically connected to a PLC control device. The program controls the transfer fixture to move the product to the processing station, controls the robotic arm to move the spray gun, and controls the dry ice supply device to spray dry ice onto the product surface. After use, the dry ice sublimates into carbon dioxide gas. This method is widely used for deburring, cleaning, and polishing various plastic parts.
[0005] For example, the utility model patent with application number CN202120239871.4, publication number CN214926329U, and title "Automatic Dry Ice Deburring Machine" uses a robotic arm gripping mechanism to pick up and place the workpiece to be processed, and then rotates the robotic arm to make the dry ice nozzle aim at the workpiece to be processed for deburring.
[0006] While existing technologies utilize dry ice blasting and eliminate the need for manual operation of the workpiece during dry ice blasting, ensuring operational safety, the applicant has discovered at least the following drawbacks when using dry ice to remove burrs from the tooth surfaces of plastic gears:
[0007] To improve operational safety and avoid hand contact with the sprayed dry ice, existing technologies typically involve placing the gear to be deburred at the deburring station using a robotic arm. The dry ice machine is then activated, spraying dry ice particles from the nozzle onto the gear. During spraying, the robotic arm rotates to continuously adjust the nozzle angle, ensuring all gear teeth are covered with dry ice particles, thus guaranteeing effective deburring while preventing hand contact with the sprayed dry ice and ensuring operational safety. However, to maintain efficiency, existing technologies require coordination and continuity between these processes, necessitating a complex control program to ensure close cooperation between the robotic arm, dry ice machine, and rotating robotic arm. Therefore, existing technologies not only require numerous hardware components (such as robotic arms and rotating robotic arms), increasing equipment complexity and manufacturing costs, but also necessitate complex programming, further increasing manufacturing difficulty and costs. Thus, finding a way to effectively simplify the equipment structure while ensuring operational safety, without requiring complex programming, is a pressing technical challenge. Summary of the Invention
[0008] The purpose of this invention is to provide a deburring device for plastic gears inside a gear pump, so as to solve the above-mentioned shortcomings of the prior art.
[0009] To achieve the above objectives, the present invention provides the following technical solution: a deburring device for plastic gears inside a gear pump, comprising a spray gun and a deburring station corresponding to the spray gun, and further comprising:
[0010] A fixed inclined frame is used to hold multiple plastic gears to be deburred;
[0011] The rotating shaft is driven to rotate by a drive mechanism.
[0012] An elastic pusher connected to the rotating shaft has a temporary storage station located downstream of the inclined frame. During the rotation of the rotating shaft, the downstream port of the inclined frame is intermittently blocked so that multiple plastic gears on the inclined frame are fed into the temporary storage station one by one.
[0013] During the rotation of the shaft, the elastic pusher slides elastically to push the plastic gear located at the temporary storage station to the deburring station.
[0014] The rotating shaft is coaxially fitted with a half gear that meshes with the plastic gear at the deburring station. During the rotation of the rotating shaft, the half gear is driven to rotate synchronously, so that the plastic gear at the deburring station rotates on its own.
[0015] In the aforementioned deburring device for plastic gears inside the gear pump, the outer surface of the rotating shaft abuts against a plastic gear located at the downstream port of the inclined frame to block the plastic gear.
[0016] The rotating shaft has a conveying groove corresponding to the downstream port of the inclined frame. The side of the conveying groove away from the inclined frame has an upward-curved surface. During the rotation of the rotating shaft, the plastic gear located at the downstream port of the inclined frame slides into the conveying groove and is blocked by the upward-curved surface due to the gravity of the plastic gear. As the rotating shaft rotates further, the plastic gear located in the conveying groove is conveyed to the temporary storage position.
[0017] The aforementioned deburring device for plastic gears in the gear pump also includes a receiving frame fixedly installed and located downstream of the conveying trough. The receiving frame corresponds to the upturned surface. During the rotation of the shaft, a plastic gear located in the conveying trough falls onto the receiving frame and slides along the receiving frame into the temporary storage position.
[0018] The aforementioned deburring device for plastic gears inside a gear pump includes an elastic pusher comprising a fixedly mounted sleeve and an inner cylinder that is elastically slidably inserted into the sleeve. The sleeve has a notch corresponding to the receiving frame, and the position of the inner cavity of the sleeve corresponding to the notch is a temporary storage station.
[0019] In the aforementioned deburring device for plastic gears inside the gear pump, a pusher is fixedly sleeved on the rotating shaft. The pusher includes a first plane, a first inclined plane, and a second plane connected in sequence around the circumference. During the synchronous rotation of the pusher driven by the rotating shaft, the first plane, the first inclined plane, and the second plane elastically abut against one end of the inner cylinder in sequence. During the process of the first inclined plane abutting against the inner cylinder, the inner cylinder is driven to gradually push the plastic gear located in the temporary storage position to the deburring position.
[0020] The aforementioned deburring device for plastic gears inside the gear pump includes a pusher plate that also elastically abuts against one end of the inner cylinder. One end of the second inclined surface is connected to the first plane, and the other end is connected to the second plane. During the process of the second inclined surface abutting against the inner cylinder, it drives the inner cylinder to gradually push the plastic gear away from the deburring station.
[0021] The aforementioned deburring device for plastic gears inside the gear pump also includes a fixed support, on which a collecting rod is mounted. A support column coaxial with the inner cylinder is fixedly installed at the top of the collecting rod. The diameter of the collecting rod is smaller than the diameter of the support column, and the support column is the deburring station.
[0022] In the aforementioned deburring device for plastic gears inside the gear pump, the bottom end of the collecting rod is rotatably inserted into the support, a connecting plate is fixedly installed on the collecting rod, and a fixed seat that cooperates with the connecting plate is fixedly installed on the support. The connecting plate and the fixed seat are detachably connected by a locking component. When the connecting plate and the fixed seat are connected, the support column is coaxial with the inner cylinder.
[0023] The aforementioned deburring device for plastic gears inside a gear pump includes an inner cylinder comprising a slide cylinder that is slidably inserted into a sleeve. A tension spring connects the slide cylinder and the sleeve. A plug is elastically slidably inserted into one end of the slide cylinder near the support column via a compression spring. The plug and the support column have the same diameter and are coaxial. In the initial state, a temporary storage distance is maintained between the plug and the support column for the plastic gear to enter the temporary storage position. During the process of the first inclined surface abutting against the inner cylinder, the plug is driven to insert into the inner ring of the plastic gear and elastically abut against the support column until the plastic gear is pushed onto the support column by the inner cylinder.
[0024] In the aforementioned deburring device for plastic gears inside the gear pump, a right baffle is detachably installed on the end face of the slide cylinder near the support column, and a limit post is integrally connected to the end of the plug. The limit post is slidably inserted into the inside of the slide cylinder and abuts against the right baffle.
[0025] Beneficial effects: In the above technical solution, the plastic gear deburring device in the gear pump provided by the present invention, through creative structural design, utilizes the cooperation between the rotating shaft, the elastic pusher and the half gear, so that the entire deburring process does not require the design of a complex control program. Only the stable rotation of the rotating shaft is needed to realize the purpose of feeding the plastic gears one by one from the inclined frame to the deburring station, and to realize the purpose of driving the plastic gear to rotate so that each gear surface on the plastic gear is uniformly deburred. It eliminates the need for the robot and rotating robotic arm in the prior art, greatly simplifies the structure of the equipment, saves costs and reduces manufacturing difficulty. It is highly creative and truly achieves the technical problem of effectively simplifying the equipment structure while ensuring operational safety and eliminating the need for designing complex programs. It can effectively solve the shortcomings of the prior art.
[0026] Furthermore, in this invention, the rotating shaft itself also serves to release multiple plastic gears on the inclined frame one by one, which is equivalent to the function of a valve. Moreover, the timing of the rotating shaft releasing the plastic gears is more timely in all stages of the deburring process, which is more effective than the traditional separate valve. This creative design makes the rotating shaft achieve unexpected technical effects.
[0027] Meanwhile, the half-gear in this application not only drives the plastic gear to rotate, but also generates friction between the half-gear and the plastic gear under the force of dry ice spraying. This friction acts as a limiter for the plastic gear, preventing it from moving axially along the support column and detaching from it when dry ice is sprayed, thus keeping the plastic gear within the dry ice spraying area. In contrast, existing technologies require manual or other specialized mechanisms to limit the workpiece to prevent it from leaving the dry ice spraying area. Therefore, this application, using a plastic gear design, eliminates the need for manual or other specialized mechanisms to limit the workpiece, thereby increasing safety and further reducing costs. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.
[0029] Figure 1 A schematic diagram of the deburring device in its initial state, provided in an embodiment of the present invention, from a first-view perspective.
[0030] Figure 2 A schematic diagram of the inclined frame, supporting frame, rotating shaft, half gear, and push plate provided in an embodiment of the present invention;
[0031] Figure 3 A schematic diagram of the deburring device in its initial state, provided in an embodiment of the present invention, from a second perspective.
[0032] Figure 4 Provided for embodiments of the present invention Figure 3 A magnified structural diagram of part A in the diagram;
[0033] Figure 5 Provided for embodiments of the present invention Figure 3 A schematic diagram of the enlarged structure of part B in the diagram;
[0034] Figure 6 A schematic diagram illustrating the relationship between the plastic gear and the inner cylinder, sleeve, support column, and collecting rod when the plastic gear is located in the temporary storage position according to an embodiment of the present invention.
[0035] Figure 7 This is a schematic diagram showing the disassembly of the inner cylinder, sleeve, and support column provided in an embodiment of the present invention.
[0036] Figure 8 This is a schematic diagram of the inner cylinder disassembled according to an embodiment of the present invention;
[0037] Figure 9This is a schematic diagram showing the state when one end of the inner cylinder abuts against the first plane, as provided in an embodiment of the present invention.
[0038] Figure 10 Provided for embodiments of the present invention Figure 9 A schematic diagram of the enlarged structure of part C in the diagram;
[0039] Figure 11 Provided for embodiments of the present invention Figure 9 A schematic diagram showing the state when multiple plastic gears are placed on the inclined frame;
[0040] Figure 12 Provided for embodiments of the present invention Figure 11 A schematic diagram of the enlarged structure of part D in the diagram;
[0041] Figure 13 A schematic diagram showing the state when one end of the inner cylinder abuts against the first inclined surface, as provided in an embodiment of the present invention;
[0042] Figure 14 This is a schematic diagram showing the state when one end of the inner cylinder abuts against the second plane, as provided in an embodiment of the present invention.
[0043] Figure 15 A schematic diagram showing the state when one end of the inner cylinder abuts against the second inclined surface, as provided in an embodiment of the present invention;
[0044] Figure 16 Provided for embodiments of the present invention Figure 15 A magnified structural diagram of part E in the diagram.
[0045] Explanation of reference numerals in the attached figures:
[0046] 1. Workbench; 2. Sleeve; 201. Notch; 202. Guide port; 3. Inner cylinder; 301. End cap; 302. Left stop plate; 303. Stud; 304. Slide cylinder; 305. Fixing block; 306. Right stop plate; 307. Compression spring; 308. Limiting post; 309. Plug; 4. Spray gun; 5. Support column; 6. Collecting rod; 7. Push plate; 701. First plane; 702. First inclined plane; 703. Second plane; 704. Second inclined plane; 8. Rotating shaft; 801. Conveying trough; 802. Upward-curving surface; 9. Half gear; 10. Plastic gear; 11. Inclined frame; 12. Support frame; 13. Support; 14. Fixed base; 1401. Screw hole; 15. Connecting plate; 1501. Insertion hole; 16. Locking element; 1601. Lock handle; 1602. Threaded locking rod; 17. Frame plate; 1701. Clearance opening; 18. Dry ice machine; 19. Drive mechanism; 20. Pier base; 21. Ball bearing; 22. Tension spring. Detailed Implementation
[0047] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.
[0048] like Figure 1-16 As shown in the figure, an embodiment of the present invention provides a deburring device for plastic gears inside a gear pump, including a spray gun 4 and a deburring station corresponding to the spray gun 4, and further including:
[0049] A fixed inclined bracket 11 is used to hold multiple plastic gears 10 to be deburred;
[0050] The rotating shaft 8 is driven to rotate by the drive mechanism 19.
[0051] An elastic pusher that is linked to the rotating shaft 8 has a temporary storage station located downstream of the inclined frame 11. During the rotation of the rotating shaft 8, the downstream port of the inclined frame 11 is intermittently blocked so that multiple plastic gears 10 on the inclined frame 11 are fed into the temporary storage station one by one.
[0052] During the rotation of the rotating shaft 8, the elastic pusher slides elastically to push the plastic gear 10 located in the temporary storage station to the deburring station.
[0053] A half gear 9 is coaxially sleeved on the rotating shaft 8 to mesh with the plastic gear 10 at the deburring station. During the rotation of the rotating shaft 8, the half gear 9 is driven to rotate synchronously so that the plastic gear 10 at the deburring station rotates on its own.
[0054] The deburring device for plastic gears inside the gear pump provided in this embodiment is used to remove residual burrs on the surface of the plastic gears after injection molding. In this embodiment, "upstream" and "downstream" refer to the direction of gear movement during operation. Specifically, it includes a workbench 1, on which a dry ice machine 18 is installed. A spray gun 4 is connected to the dry ice machine 18 for spraying dry ice particles (this is prior art and will not be described in detail). A frame plate 17 is fixedly installed on the workbench 1, and the spray gun 4 is mounted on the frame plate 17. The mounting method can be fixed or detachable; details are omitted as long as the spray gun 4 can be stably limited. The inclined frame 11 is fixedly installed on the workbench 1 and is used to place the plastic gears 10 to be deburred. Multiple plastic gears 10 can be placed on the inclined frame 11 at one time. The multiple plastic gears 10 are arranged in a straight line. The inclined frame 11 is inclined so that the plastic gears 10 can slide downstream under their own weight. The inclined frame 11 includes a base plate and two side plates fixedly installed and symmetrically arranged with the base plate. Multiple plastic gears 10 to be deburred are neatly arranged on the base plate of the inclined frame 11 along the length direction of the base plate and located between the two side plates of the inclined frame 11. The two side plates of the inclined frame 11 are used to limit the plastic gears 10. The vertical distance between the two side plates of the inclined frame 11 is slightly greater than the axial length of the plastic gears 10 (specifically: the vertical distance between the two side plates of the inclined frame 11 is greater than the axial length of the plastic gears 10 by no more than 1 mm) so that the plastic gears 10 can slide down by themselves under their own weight without easily tilting axially, thus improving the stability of the plastic gears 10 during the sliding process. A support 20 is fixedly installed on the workbench 1, and a drive mechanism 19 is installed on the support 20. The drive mechanism 19 is used to drive the rotating shaft 8 to rotate. The drive mechanism 19 is a speed reducer or a servo motor. The drive mechanism 19 slowly drives the rotating shaft 8 to rotate, and the rotation speed of the rotating shaft 8 can be set according to actual needs. A ball bearing 21 is fixedly installed on the workbench 1. One end of the rotating shaft 8 is rotatably connected to the ball bearing 21, and the other end is coaxially keyed or coaxially fixedly connected to the output shaft of the drive mechanism 19.The deburring device in this embodiment includes a temporary storage station and a deburring station. The temporary storage station is located upstream of the deburring station and downstream of the inclined frame 11. The spray gun 4 corresponds to the deburring station. When the plastic gear 10 enters the temporary storage station from the inclined frame 11 and then enters the deburring station from the temporary storage station, the dry ice particles sprayed by the spray gun 4 can cover the plastic gear 10, thereby achieving deburring treatment of the plastic gear 10. The entry of the plastic gear 10 from the inclined frame 11 into the temporary storage station and from the temporary storage station into the deburring station are both achieved by the rotation of the rotating shaft 8, which drives the deburring station located at the deburring station. The rotation of the plastic gear 10 at the deburring station is also achieved by the rotation of the rotating shaft 8, so that each gear surface of the plastic gear 10 can be evenly covered by the dry ice particles sprayed by the spray gun 4, achieving uniform deburring of the plastic gear 10. There is no need for the spray gun 4 to move, eliminating the need for the robotic arm and rotating robotic arm designed in the prior art. Moreover, since only the rotation of the rotating shaft 8 is required throughout the process, there is no need to provide complex program design to achieve automatic feeding and automatic uniform deburring of the plastic gear 10, while still achieving the goal of reducing manual operation and improving operational safety.
[0055] In this embodiment, the operation of conveying multiple plastic gears 10 on the inclined frame 11 into the temporary storage station is achieved through the structure of the rotating shaft 8 itself, giving the rotating shaft 8 an unexpected technical effect. The multiple plastic gears 10 on the inclined frame 11 enter the temporary storage station one by one; specifically, one plastic gear 10 is conveyed for each rotation of the rotating shaft 8. The temporary storage station is located within an elastic pusher, which is linked to the rotating shaft 8 and used to push the plastic gear 10 entering the temporary storage station to the deburring station. Specifically, during the rotation of the rotating shaft 8, when a plastic gear 10 on the inclined frame 11 enters the temporary storage station, the rotating shaft 8 drives the elastic pusher to slide elastically (the purpose of elastic sliding is to achieve automatic reset of the elastic pusher). The sliding of the elastic pusher provides thrust to the plastic gear 10 in the temporary storage station to push it into the deburring station. After entering the deburring station, the plastic gear 10 corresponds to the spray gun 4. At this time, when the spray gun 4 sprays dry ice particles, it can spray the dry ice particles onto the plastic gear 10. Meanwhile, a half gear 9 is coaxially sleeved on the rotating shaft 8 to mesh with the plastic gear 10 at the deburring station. The half gear 9 rotates synchronously with the rotating shaft 8. When the plastic gear 10 is fed into the deburring station, the rotating shaft 8 continues to rotate, driving the half gear 9 to mesh with the plastic gear 10, thereby driving the half gear 9 to rotate the plastic gear 10. During the rotation of the plastic gear 10, the dry ice particles sprayed by the spray gun 4 can evenly cover each gear surface of the plastic gear 10, thereby achieving uniform deburring of each gear surface of the plastic gear 10.
[0056] Therefore, the deburring device for plastic gears inside the gear pump provided by the present invention, through its creative structural design, utilizes the cooperation between the rotating shaft 8, the elastic pusher, and the half gear 9, so that the entire deburring process does not require the design of a complex control program. Only the stable rotation of the rotating shaft 8 is needed to achieve the purpose of feeding the plastic gears 10 one by one from the inclined frame 11 to the deburring station, and to drive the plastic gears 10 to rotate so that each gear surface on the plastic gears 10 is uniformly deburred. This eliminates the need for the robotic arm and rotating robotic arm in the prior art, greatly simplifying the structure of the equipment, saving costs and reducing manufacturing difficulty. It is highly innovative and truly achieves the technical problem of effectively simplifying the equipment structure while ensuring operational safety and eliminating the need for designing complex programs. It can effectively solve the shortcomings of the prior art.
[0057] Furthermore, in this embodiment, the rotating shaft 8 also serves to release multiple plastic gears 10 on the inclined frame 11 one by one, which is equivalent to the function of a valve. Moreover, the timing of the rotating shaft 8 releasing the plastic gears 10 is more timely in all stages of the deburring process, which is more effective than the traditional separate valve. This creative design makes the rotating shaft 8 achieve unexpected technical effects.
[0058] Meanwhile, the half-gear 9 in this application not only drives the plastic gear 10 to rotate, but also generates friction between the half-gear 9 and the plastic gear 10 under the force of dry ice spraying. This friction helps to limit the movement of the plastic gear 10, preventing it from moving axially along the support column 5 and detaching from the support column 5 when dry ice is sprayed, thus keeping the plastic gear 10 within the dry ice spraying area. In contrast, existing technologies require manual or other specialized mechanisms to limit the workpiece to prevent it from detaching from the dry ice spraying area. Therefore, the design of the plastic gear 10 in this application eliminates the need for manual or other specialized mechanisms to limit the workpiece, thereby increasing safety and further reducing costs.
[0059] In this embodiment, the rotating shaft 8 plays the role of releasing multiple plastic gears 10 on the inclined frame 11 one by one in the following way: the outer surface of the rotating shaft 8 abuts against a plastic gear 10 located at the downstream port of the inclined frame 11 to block the plastic gear 10. At this time, the plastic gear 10 on the inclined frame 11 cannot slide down under the blocking effect of the rotating shaft 8.
[0060] Furthermore, a conveying groove 801 corresponding to the downstream port of the inclined frame 11 is provided on the rotating shaft 8. An upward-curved surface 802 is formed on the side of the conveying groove 801 away from the inclined frame 11. During the rotation of the rotating shaft 8, the weight of the plastic gear 10 causes it to slide into the conveying groove 801 and be blocked by the upward-curved surface 802. As the rotating shaft 8 rotates further, the plastic gear 10 in the conveying groove 801 is conveyed to a temporary storage position. Specifically, the conveying groove 801 can only accommodate one plastic gear 10, and the upward-curved surface 802 is set at a specific angle to the bottom surface of the conveying groove 801, so that the upward-curved surface 802 acts as a barrier to the plastic gear 10 located on the conveying groove 801. Figure 9 , 10 As shown in Figures 11 and 12, as the rotating shaft 8 rotates, the angle of the conveying trough 801 changes continuously, causing the outer surface of the rotating shaft 8 to gradually separate from the plastic gear 10 at the downstream port of the inclined frame 11. When the conveying trough 801 rotates to the port position of the inclined frame 11, the multiple plastic gears 10 on the inclined frame 11 slide downstream under their own weight. The plastic gear 10 located at the downstream port of the inclined frame 11 enters the conveying trough 801 and is blocked by the upturned surface 802. Since the conveying trough 801 can only accommodate one plastic gear 10, after the plastic gear 10 originally located at the downstream port of the inclined frame 11 enters the conveying trough 801, one of the multiple plastic gears 10 located upstream of it re-enters the downstream port of the inclined frame 11 to wait for the next entry into the conveying trough 801. As the rotating shaft 8 continues to rotate, the plastic gear 10 located in the conveying trough 801 is conveyed downstream along with the rotation of the rotating shaft 8. The plastic gear 10 that re-enters the downstream port of the inclined frame 11 stops sliding down by contacting the outer surface of the rotating shaft 8.
[0061] In this embodiment, a receiving frame 12 is also included, which is fixedly installed and located downstream of the conveying trough 801. The receiving frame 12 corresponds to the upturned surface 802. During the rotation of the rotating shaft 8, a plastic gear 10 located in the conveying trough 801 falls onto the receiving frame 12 and slides along the receiving frame 12 into the temporary storage position. Specifically, the receiving frame 12 includes an inclined base plate and two side baffles fixedly connected to the inclined base plate and arranged opposite to it. The two side baffles are used to limit the plastic gear 10, preventing it from sliding off the sides after entering the receiving frame 12. The distance between the two side baffles is the same as the distance between the two side plates on the inclined frame 11. The inclined base plate of the receiving frame 12 is inclined downward towards the temporary storage position, and the height of the inclined base plate of the receiving frame 12 is lower than the height of the inclined frame 11. The receiving frame 12 is fixedly installed on the workbench 1, such as... Figures 12 to 13As shown in the transformation process, during the process of conveying the plastic gear 10 by the rotating shaft 8, the angle between the upturned surface 802 and the horizontal plane gradually decreases. When the upturned surface 802 is below the horizontal plane, the plastic gear 10 slides down along the upturned surface 802 under the action of gravity. At this time, the height of the top surface of the inclined bottom plate of the receiving frame 12 is not higher than the height of the upturned surface 802 so that the plastic gear 10 slides down from the upturned surface 802 and lands on the inclined bottom plate of the receiving frame 12 and is located between the two side baffles on the receiving frame 12. At this time, under the action of gravity, the plastic gear 10 enters the temporary storage position along the inclined bottom plate of the receiving frame 12.
[0062] In this embodiment, the elastic pusher includes a fixedly mounted sleeve 2 and an inner cylinder 3 that is elastically slidably inserted into the sleeve 2. The sleeve 2 has a notch 201 corresponding to the receiving frame 12, and the position of the inner cavity of the sleeve 2 corresponding to the notch 201 is a temporary storage station. Specifically, the sleeve 2 is fixedly connected to the frame plate 17, such as... Figure 4 As shown, the inclined base plate of the receiving frame 12 is located at the bottom of the temporary storage station to support the plastic gear 10 of the temporary storage station. The inner wall of the sleeve 2 is used to limit the plastic gear 10 of the temporary storage station. The gear surface of the plastic gear 10 of the temporary storage station is in contact with the inner wall of the sleeve 2 so that each plastic gear 10 is in the same or basically the same position when it enters the temporary storage station.
[0063] A pusher plate 7 is fixedly sleeved on the rotating shaft 8. The pusher plate 7 includes a first plane 701, a first inclined plane 702, and a second plane 703 connected circumferentially. During the synchronous rotation of the pusher plate 7 driven by the rotating shaft 8, the first plane 701, the first inclined plane 702, and the second plane 703 elastically abut against one end of the inner cylinder 3 in sequence. During the contact between the first inclined plane 702 and the inner cylinder 3, the inner cylinder 3 is driven to gradually push the plastic gear 10 located in the temporary storage position to the deburring position. Specifically, the rotation of the pusher plate 7 driven by the rotating shaft 8 causes the first plane 701, the first inclined plane 702, and the second plane 703 to rotate. During the process of the plastic gear 10 being transported to the temporary storage position by the rotating shaft 8, one end of the inner cylinder 3 elastically abuts against the first plane 701. Then, as the pusher plate 7 continues to rotate, one end of the inner cylinder 3 is offset from the first plane 701 and elastically abuts against the first inclined plane 702. As the first inclined plane 702 rotates, it pushes the inner cylinder 3 to slide elastically. During the sliding process, the plastic gear 10 at the temporary storage station is pushed towards the deburring station so that the plastic gear 10 enters the deburring station. Then, one end of the inner cylinder 3 is offset from the first inclined surface 702 and elastically abuts against the second plane 703 so that the inner cylinder 3 stops at a specific position during the rotation of the rotating shaft 8, thereby causing the plastic gear 10 to stop at the deburring station and not continue to move forward. At this time, the rotating half gear 9 meshes with the plastic gear 10 that has entered the deburring station, so that the half gear 9 drives the plastic gear 10 to rotate (e.g., Figure 14As shown, during the rotation of the plastic gear 10, the dry ice particles sprayed by the spray gun 4 evenly cover each gear surface of the plastic gear 10. During the process of the inner cylinder 3 abutting against the second plane 703, the plastic gear 10 rotates at least once, thereby achieving a comprehensive deburring effect on the plastic gear 10.
[0064] In this embodiment, the pusher 7 also includes a second inclined surface 704 that elastically abuts against one end of the inner cylinder 3. One end of the second inclined surface 704 is connected to the first plane 701, and the other end is connected to the second plane 703. During the abutment between the second inclined surface 704 and the inner cylinder 3, the inner cylinder 3 is driven to gradually push the plastic gear 10 away from the deburring station. Specifically, as shown... Figure 15 , 16 As shown, when the plastic gear 10 rotates to a specific angle at the deburring station, the deburring operation of the plastic gear 10 is achieved. Then, as the rotating shaft 8 continues to rotate, one end of the inner cylinder 3 is offset from the second plane 703 and abuts against the second inclined plane 704. During the process of one end of the inner cylinder 3 abutting against the second inclined plane 704, the second inclined plane 704 pushes the inner cylinder 3 to further elastically slide, causing the plastic gear 10 to disengage from the deburring station, thus achieving automatic unloading. Furthermore, when one end of the inner cylinder 3 abuts against the second inclined plane 704, the half gear 9 separates from the plastic gear 10 to reduce the resistance encountered by the plastic gear 10 during unloading.
[0065] It can be seen that during the rotation of the shaft 8, it unexpectedly plays the role of feeding the plastic gear 10, so that the feeding of the plastic gear 10 can be achieved without adding equipment structure, further reducing structural design and manual operation.
[0066] In this embodiment, both the first inclined surface 702 and the second inclined surface 704 are inclined, which can push the inner cylinder 3 to slide axially when rotated; while the first plane 701 and the second plane 703 are planes, and the inner cylinder 3 will not slide when rotated. That is, during the process of the first plane 701 abutting with one end of the inner cylinder 3 and during the process of the second plane 703 abutting with one end of the inner cylinder 3, the axial position of the inner cylinder 3 remains unchanged; during the process of the first inclined surface 702 abutting with one end of the inner cylinder 3 and during the process of the second inclined surface 704 abutting with one end of the inner cylinder 3, the inner cylinder 3 slides toward the deburring station. Specifically, the functions are as follows: during the process of the first plane 701 abutting with one end of the inner cylinder 3, the rotating shaft 8 transports the plastic gear 10 from the inclined frame 11 to the temporary storage station; during the process of the first inclined plane 702 abutting with one end of the inner cylinder 3, the inner cylinder 3 moves the plastic gear 10 from the temporary storage station to the deburring station; during the process of the second plane 703 abutting with one end of the inner cylinder 3, the half gear 9 drives the plastic gear 10 in the deburring station to rotate to achieve uniform deburring; during the process of the second inclined plane 704 abutting with one end of the inner cylinder 3, the inner cylinder 3 removes the deburred plastic gear 10 from the deburring station to achieve unloading.
[0067] In this embodiment, a fixed support 13 is also included. A collecting rod 6 is provided on the support 13, and a support column 5 coaxial with the inner cylinder 3 is fixedly installed at the top of the collecting rod 6. The diameter of the collecting rod 6 is smaller than the diameter of the support column 5, and the support column 5 is a deburring station. Specifically, the support 13 is fixedly installed on the workbench 1, and the support column 5 is a deburring station. The plastic gear 10 enters the deburring station by being fitted onto the support column 5. The inner diameter of the plastic gear 10 matches the outer diameter of the support column 5, so that when the plastic gear 10 is pushed onto the support column 5 by the inner cylinder 3, it can remain stable and not wobble. Thus, the half gear 9 can stably mesh with the plastic gear 10 so that the rotating half gear 9 can drive the plastic gear 10 to rotate smoothly around the support column 5. Figure 15 , 16 As shown, when the plastic gear 10 rotates at a specific angle, the second inclined surface 704 drives the inner cylinder 3 to slide further, thereby causing the inner cylinder 3 to push the plastic gear 10 to slide along the support column 5 until the plastic gear 10 disengages from the support column 5. After the plastic gear 10 disengages from the support column 5, it is temporarily stored on the collecting rod 6.
[0068] Furthermore, the bottom end of the collecting rod 6 is rotatably inserted into the support 13. A connecting plate 15 is fixedly installed on the collecting rod 6, and a fixed seat 14 that cooperates with the connecting plate 15 is fixedly installed on the support 13. The connecting plate 15 and the fixed seat 14 are detachably connected by a locking member 16. When the connecting plate 15 and the fixed seat 14 are connected, the support column 5 is coaxial with the inner cylinder 3. Specifically, the connecting plate 15 has an insertion hole 1501, and the fixed base 14 has a screw hole 1401 corresponding to the insertion hole 1501. The locking component 16 includes a locking handle 1601 and a threaded locking rod 1602 that are fixedly connected. After the threaded locking rod 1602 is inserted into the insertion hole 1501, it is screwed into the screw hole 1401. By rotating the locking handle 1601, the threaded locking rod 1602 is rotated until the locking handle 1601 is pressed against the side of the connecting plate 15, thus connecting the fixed base 14 and the connecting plate 15. At this time, the positions of the collecting rod 6 and the support column 5 are fixed, and the support column 5 is coaxial with the inner cylinder 3. Conversely, when it is necessary to rotate the collecting rod 6 and the support column 5, the locking handle 1601 is rotated in the opposite direction until the threaded locking rod 1602 is separated from the screw hole 1401. The frame plate 17 has an clearance opening 1701, such as... Figure 4 As shown, when the collecting rod 6 and the support column 5 are rotated, the clearance opening 1701 is used to allow the collecting rod 6 and the support column 5 to rotate. The purpose of rotating the collecting rod 6 and the support column 5 is that when there are many plastic gears 10 sleeved on the collecting rod 6, rotating the collecting rod 6 and the support column 5 to a certain angle allows the plastic gears 10 sleeved on the collecting rod 6 to be removed one by one without being blocked by other parts. Afterwards, the connecting plate 15 is connected to the fixed base 14 again through the locking member 16, which resets the support column 5 and the collecting rod 6. At this time, the support column 5 and the inner cylinder 3 are coaxial again.
[0069] In this embodiment, the inner cylinder 3 includes a slide cylinder 304 that is slidably inserted into the sleeve 2. A tension spring 22 is connected between the slide cylinder 304 and the sleeve 2. A plug 309 is elastically slidably inserted into one end of the slide cylinder 304 near the support column 5 through a compression spring 307. The plug 309 has the same diameter as the support column 5 and is coaxial. In the initial state, there is a temporary storage distance between the plug 309 and the support column 5 for the plastic gear 10 to enter the temporary storage position. During the process of the first inclined surface 702 abutting against the inner cylinder 3, the plug 309 is driven to insert into the inner ring of the plastic gear 10 and elastically abut against the support column 5 until the plastic gear 10 is pushed onto the support column 5 by the inner cylinder 3. Specifically, the sleeve 2 has multiple guide ports 202 on the side near the support column 5, which are connected to the inner cavity of the sleeve 2. The multiple guide ports 202 are arranged at equal intervals along the circumference of the sleeve 2. Multiple fixing blocks 305 corresponding to the multiple guide ports 202 are fixedly installed on the slide cylinder 304. The fixing blocks 305 are slidably inserted into the guide ports 202. Each fixing block 305 is connected to the sleeve 2 by a tension spring 22. One end of the tension spring 22 is fixedly connected to the fixing block 305 and the other end is fixedly connected to the sleeve 2. The elastic force of the tension spring 22 is used to realize the elastic sliding of the inner cylinder 3. During the process of the inner cylinder 3 being pushed and slid by the push plate 7, the tension spring 22 is continuously stretched. When the first plane 701 abuts against the end of the inner cylinder 3, the inner cylinder 3 is reset under the action of the elastic force of the tension spring 22. In the initial state, the plug 309 is located outside the slide cylinder 304 and is used to insert into the inner ring of the plastic gear 10. The function of the elastic sliding connection between the plug 309 and the slide cylinder 304 is as follows: During the sliding process of the inner cylinder 3, the plug 309 moves continuously toward the support column 5. The plug 309 is first inserted into the inner ring of the plastic gear 10, and then the end of the plug 309 abuts against the end of the support column 5. At this time, as the inner cylinder 3 continues to slide, it can drive the plug 309 to slide continuously into the slide cylinder 304. During this process, the slide cylinder 304 is continuously sleeved on the support column 5 so that the plastic gear 10 on the plug 309 is continuously pushed onto the support column 5 by the end of the slide cylinder 304, thereby realizing the conveying of the plastic gear 10 from the temporary storage station to the deburring station.
[0070] Furthermore, a right baffle 306 is detachably installed on the end face of the slide cylinder 304 near the support column 5, and a limit post 308 is integrally connected to the end of the plug 309. The limit post 308 is slidably inserted into the inside of the slide cylinder 304 and abuts against the right baffle 306. Specifically, the slide cylinder 304 has an inner sliding hole at one end near the support column 5. The compression spring 307 is located in the inner sliding hole, and the limiting post 308 is slidably inserted into the inner sliding hole. The right baffle 306 is installed on the end face of the inner sliding hole by a countersunk screw. The inner diameter of the right baffle 306 is smaller than the diameter of the limiting post 308, and the right baffle 306 and the limiting post 308 are coaxial. The right baffle 306 is used to limit the limiting post 308. The compression spring 307 is always in a compressed state so that, in the initial state, the end face of the limiting post 308 abuts against the side of the right baffle 306 based on the elastic force of the compression spring 307, so that the positions of the limiting post 308 and the right baffle 306 are specific. At this time, the plug 309 protrudes from the slide cylinder 304 through the right baffle 306. When the inner cylinder 3 pushes the plastic gear 10 to move, it pushes the plastic gear 10 to move through the side of the right baffle 306.
[0071] When the plastic gear 10 enters the temporary storage station, the plug 309 is coaxial with the plastic gear 10. However, if there are too many burrs on the plastic gear 10, the position of the plastic gear 10 may deviate, causing the plug 309 to be non-coaxial with the plastic gear 10. In this case, the plug 309 is prone to failure when inserted into the inner ring of the plastic gear 10. Therefore, in this embodiment, if... Figure 6 , 7 As shown in Figure 8, the opposite ends of the plug 309 and the support column 5 are both in a frustum shape. When the position of the plastic gear 10 deviates to a certain extent, the frustum-shaped end of the plug 309 can also be smoothly inserted into the inner ring of the plastic gear 10, so that the plastic gear 10 is fitted on the plug 309. Furthermore, the frustum-shaped end of the support column 5 can enable the inner cylinder 3 to smoothly push the plastic gear 10 onto the support column 5.
[0072] Furthermore, such as Figure 6 , 7 As shown, the end of the support column 5 away from the plug 309 is also truncated cone-shaped so that the diameters of both ends of the support column 5 are smaller than the inner diameter of the plastic gear 10. When the plastic gears 10 fitted on the collecting rod 6 are removed one by one, the plastic gears 10 can easily pass through the support column 5, increasing the speed of removing the plastic gears 10.
[0073] In the prior art, each pair of plastic gears 10 requires a machine stop once to place the deburred plastic gear 10 and place another plastic gear 10 that needs to be deburred at the deburring station, resulting in very frequent machine stops. In contrast, the collecting rod 6 of the present invention has a specific length and can accommodate multiple plastic gears 10. The machine only needs to be stopped once when the plastic gears 10 accommodated on the collecting rod 6 reach the maximum number, thereby greatly reducing the number of machine stops.
[0074] In this embodiment, the inner cylinder 3 also includes an end cap 301, a left baffle 302, and a stud 303. One side of the left baffle 302 is fixedly connected to the stud 303, and the other side is connected to the end cap 301 by a countersunk screw. The stud 303 is threadedly inserted into the end of the slide cylinder 304 away from the support column 5. The end cap 301 has a receiving groove inside. The receiving groove is smaller at the end away from the slide cylinder 304 and larger at the end closer to the slide cylinder 304. A ball bearing 21 is rolled in the receiving groove. When the end cap 301 is connected to the left baffle 302, the ball bearing 21 abuts against the side of the left baffle 302 and protrudes out of the receiving groove and abuts against the first plane 701, the first inclined plane 702, the second plane 703, and the second inclined plane 704. When the push plate 7 rotates, the first plane 701, the first inclined plane 702, the second plane 703, and the second inclined plane 704 drive the inner cylinder 3 to roll, thereby reducing the friction between the inner cylinder 3 and the push plate 7. This reduces component wear.
[0075] In this embodiment, a rubber pad (not shown in the figure) is embedded inside the first plane 701. The rubber pad abuts against one end of the inner cylinder 3. When one end of the inner cylinder 3 is misaligned with the second inclined plane 704, one end of the inner cylinder 3 collides with the rubber pad, thereby reducing collision wear and improving the service life of the component.
[0076] In this embodiment, a top plate 1101 is installed on the top side of the inclined frame 11 near the rotating shaft 8. The plastic gear 10 located at the downstream end of the inclined frame 11 is located below the top plate 1101. The top plate 1101 is used to limit the plastic gear 10 located at the downstream end of the inclined frame 11, preventing the rotating shaft 8 from pushing the plastic gear 10 upward and disengaging it from the inclined frame 11 when the plastic gear 10 abuts against the outer side of the rotating shaft 8, thus improving the stability of the plastic gear 10 on the inclined frame 11. At the same time, when the plastic gear 10 enters the conveying groove 801, it is offset from the top plate 1101, so that the top plate 1101 will not obstruct the plastic gear 10 when the rotating shaft 8 conveys it. The top plate 1101 is fixedly connected to or snapped onto the inclined frame 11, as long as the top plate 1101 can be securely installed on the inclined frame 11, which will not be elaborated further.
[0077] In this embodiment, to prevent the inner cylinder 3 from rotating during the sliding process, a rib plate can be fixedly installed on the outer surface of the inner cylinder 3, and an inner groove that slides and inserts into the rib plate can be opened inside the inner cylinder 2. This is prior art and will not be described in detail.
[0078] The nozzle of the spray gun 4 is flat and can completely cover the plastic gear 10 located at the deburring station axially to ensure the comprehensiveness of the plastic gear 10 during deburring.
[0079] In this embodiment, the proportions of the first plane 701, the first inclined plane 702, the second plane 703, and the second inclined plane 704 to the entire circumference of the push plate 7 are 10%-20%, 20%-30%, 30%-40%, and 20%-30%, respectively. Furthermore, the proportion of the circumferential surface corresponding to the conveying groove 801 to the circumferential surface of the rotating shaft 8 is 40%-55%.
[0080] The collecting rod 6, locking element 16, support 13, fixed base 14, and connecting plate 15 are all made of metal. The elastic force experienced by the inner cylinder 3 during elastic sliding is also very small, and the collecting rod 6 will not deform. Under the threaded locking of the locking element 16 and the support of the support 13 on the bottom of the collecting rod 6, the collecting rod 6 is very firm.
[0081] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A deburring device for plastic gears inside a gear pump, comprising a spray gun and a deburring station corresponding to the spray gun, characterized in that, Also includes: A fixed inclined frame is used to hold multiple plastic gears to be deburred; The rotating shaft is driven to rotate by a drive mechanism. An elastic pusher connected to the rotating shaft has a temporary storage station located downstream of the inclined frame. During the rotation of the rotating shaft, the downstream port of the inclined frame is intermittently blocked so that multiple plastic gears on the inclined frame are fed into the temporary storage station one by one. During the rotation of the shaft, the elastic pusher slides elastically to push the plastic gear located at the temporary storage station to the deburring station. A half gear is coaxially sleeved on the rotating shaft to mesh with the plastic gear at the deburring station. During the rotation of the rotating shaft, the half gear is driven to rotate synchronously so that the plastic gear at the deburring station rotates on its own. The outer surface of the rotating shaft abuts against a plastic gear located at the downstream port of the inclined frame to block the plastic gear; The rotating shaft has a conveying groove corresponding to the downstream port of the inclined frame. The side of the conveying groove away from the inclined frame has an upward-curved surface. During the rotation of the rotating shaft, the plastic gear located at the downstream port of the inclined frame slides into the conveying groove and is blocked by the upward-curved surface due to the gravity of the plastic gear. As the rotating shaft rotates further, the plastic gear located in the conveying groove is conveyed to the temporary storage position. It also includes a receiving frame that is fixedly installed and located downstream of the conveying trough, the receiving frame corresponding to the upturned surface, and during the rotation of the rotating shaft, a plastic gear located in the conveying trough falls onto the receiving frame and slides along the receiving frame into the temporary storage position. The elastic pusher includes a fixedly installed sleeve and an inner cylinder that is elastically slidably inserted into the sleeve. The sleeve has a notch corresponding to the receiving frame, and the position of the inner cavity of the sleeve corresponding to the notch is a temporary storage position. A push plate is fixedly sleeved on the rotating shaft. The push plate includes a first plane, a first inclined plane, and a second plane connected in sequence around the circumference. During the process of the rotating shaft driving the push plate to rotate synchronously, the first plane, the first inclined plane, and the second plane elastically abut against one end of the inner cylinder in sequence. During the process of the first inclined plane abutting against the inner cylinder, the inner cylinder is driven to gradually push the plastic gear located in the temporary storage station to the deburring station.
2. The deburring device for plastic gears inside a gear pump according to claim 1, characterized in that: The push plate also includes a second inclined surface that elastically abuts against one end of the inner cylinder. One end of the second inclined surface is connected to the first plane and the other end is connected to the second plane. During the process of the second inclined surface abutting against the inner cylinder, it drives the inner cylinder to gradually push the plastic gear away from the deburring station.
3. The deburring device for plastic gears inside a gear pump according to claim 1, characterized in that: It also includes a fixed support, on which a collecting rod is provided. A support column coaxial with the inner cylinder is fixedly installed at the top of the collecting rod. The diameter of the collecting rod is smaller than the diameter of the support column, and the support column is a deburring station.
4. The deburring device for plastic gears inside a gear pump according to claim 3, characterized in that: The bottom end of the collecting rod is rotatably inserted into the support. A connecting plate is fixedly installed on the collecting rod. A fixed seat that cooperates with the connecting plate is fixedly installed on the support. The connecting plate and the fixed seat are detachably connected by a locking component. When the connecting plate and the fixed seat are connected, the support column is coaxial with the inner cylinder.
5. The deburring device for plastic gears inside a gear pump according to claim 3, characterized in that: The inner cylinder includes a slide cylinder that is slidably inserted into the sleeve. A tension spring connects the slide cylinder and the sleeve. A plug is elastically slidably inserted into one end of the slide cylinder near the support column via a compression spring. The plug and the support column have the same diameter and are coaxial. In the initial state, a temporary storage distance is left between the plug and the support column for the plastic gear to enter the temporary storage position. During the process of the first inclined surface abutting against the inner cylinder, the plug is driven to insert into the inner ring of the plastic gear and elastically abut against the support column until the plastic gear is pushed onto the support column by the inner cylinder.
6. The deburring device for plastic gears inside a gear pump according to claim 5, characterized in that: A right baffle is detachably installed on the end face of the slide cylinder near the support column. A limit post is integrally connected to the end of the plug. The limit post is slidably inserted into the inside of the slide cylinder and abuts against the right baffle.