Motor stator clamping jaw based on rack and pinion drive

Abstract

This utility model relates to the field of gripper technology, and more particularly to a motor stator gripper based on gear and rack drive. It includes a fixed base, a linear motor fixed to the front end of the fixed base, and a self-lubricating gripping component mounted on the moving end of the linear motor. The self-lubricating gripping component includes a mounting base, a support plate fixed to the bottom end of the mounting base, and two positioning seats fixed to the upper surface of the support plate. A grooved rack mechanism is slidably connected between the two positioning seats. Gears are meshed on both sides of the grooved rack mechanism, and a gripper arm is fixed above the gears via a connecting shaft. The grooved rack mechanism includes a cavity rack, with linearly arranged tooth grooves and supplementary grooves on the outer wall of the cavity rack. In this utility model, through the linkage design of the grooved rack mechanism and the automatic lubrication component, oil can be automatically replenished to the gear and rack meshing area during gripper opening and closing operations, accurately covering the lubrication blind spot of the tooth side gap, eliminating the need for manual periodic oil replenishment, and saving time and manpower.

Description

Technical Field

[0001] This utility model relates to the field of gripper technology, specifically to a motor stator gripper based on gear and rack drive. Background Technology

[0002] The gear and rack driven motor stator gripper is an automated execution device designed specifically for the gripping, handling or assembly of motor stators. In the gripping operation of motor stators, the gripper undertakes the key tasks of grasping and transferring. Since motor stators are mostly made of copper, their own weight is relatively large, which puts forward high requirements on the drive structure of the gripper. The gear and rack drive method is more common in this type of gripper. However, in actual operation, the meshing parts of the gear and rack are prone to wear due to continuous friction, especially the tooth flank clearance, which often becomes a lubrication blind spot. Conventional lubrication operations are difficult to fully cover this area, resulting in poor lubrication and further aggravating the wear problem. To alleviate this situation and ensure the normal operation of the gripper, it is necessary for the staff to regularly replenish sufficient lubricating oil to the tooth flank clearance. However, this method of regular oil replenishment not only consumes a lot of time but also requires the staff to invest a lot of effort. Therefore, a motor stator gripper based on gear and rack drive is proposed to address the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a motor stator gripper based on gear and rack drive to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A gear-rack driven motor stator gripper includes a fixed base, a linear motor fixed to the front end of the fixed base, and a self-lubricating gripping assembly mounted on the moving end of the linear motor. The self-lubricating gripping assembly includes a mounting base, a bearing plate fixed to the bottom end of the mounting base, two positioning seats fixed to the upper surface of the bearing plate, and a slotted rack mechanism slidably connected between the two positioning seats. Gears are meshed on both sides of the slotted rack mechanism, and a gripping arm is fixed above the gears via a connecting shaft. The slotted rack mechanism includes a cavity rack, with linearly arranged tooth grooves and supplementary grooves on the outer wall of the cavity rack. A limit groove is formed at the rear end of the inner wall of the cavity rack, and a supplementary rod is slidably connected to the middle of the inner wall of the cavity rack. An oil guide groove is formed on the outer wall of the supplementary rod, and a lubricating oil piston tube is slidably connected to the front end of the inner side of the supplementary rod. A support spring is fixed to the rear end of the lubricating oil piston tube, and a one-way valve is fixed to the rear end of the support spring.

[0005] As a further optimization of this utility model, the cavity rack has an internal cavity structure, the supplementary groove has a triangular lateral projection shape, the supplementary groove is located at the center of the tooth groove, the number of supplementary grooves is the same as the number of tooth grooves, the tooth groove is connected to the interior of the cavity rack through the supplementary groove, the rear end of the cavity rack is fixedly connected to the telescopic end of the electric cylinder, and the electric cylinder is located on the rear side of the upper surface of the support plate.

[0006] As a further optimization of this utility model, the following features are provided: the interior of the replenishing rod is a hollow structure; an air bladder is fixed to the rear end of the replenishing rod; the lateral projection shape of the oil guide groove is triangular; and the position of the oil guide groove corresponds to the position of the replenishing groove.

[0007] As a further optimization of this utility model, a limiting block is fixed to the rear end of the outer wall of the supplementary rod, the limiting block extends into the interior of the limiting groove, and the limiting block and the limiting groove are slidably connected.

[0008] As a further optimization of this utility model, the center of the lubricating oil piston tube and the center of the cavity rack are located on the same central axis, the lubricating oil piston tube extends to the front of the cavity rack, an injection nozzle is fixed in the middle of the front end of the lubricating oil piston tube, and a limiting seat is fixed on one side of the front end of the lubricating oil piston tube.

[0009] As a further optimization of this utility model, the two positioning seats are respectively located on the front side and the middle of the upper surface of the mounting seat, wherein a limiting rod is fixed to the outside of the positioning seat located on the front side, and the position of the limiting rod corresponds to the position of the limiting seat.

[0010] As a further optimization of this utility model, the outer side of the one-way valve is fixedly connected to the inner side of the toothed rack with cavity, and the center of the one-way valve and the center of the supplementary rod are located on the same central axis.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the linkage design of the grooved rack mechanism and the automatic lubrication component enables automatic oil replenishment to the gear and rack meshing area during the opening and closing operation of the gripper. This accurately covers the lubrication blind spots in the tooth side clearance, eliminating the need for regular manual oil replenishment, saving time and manpower. Furthermore, the timely and uniform oil replenishment effectively reduces friction and wear at the meshing parts, extends the service life of the gripper, ensures the stability of gripping and transferring heavy-duty motor stators, and meets the needs of high-efficiency production. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the self-lubricating clamping assembly of this utility model; Figure 3 This is an exploded structural diagram of the self-lubricating clamping assembly of this utility model; Figure 4 This is a cross-sectional structural diagram of the cavity rack of this utility model; Figure 5 This is a cross-sectional structural diagram of the grooved rack mechanism of this utility model; Figure 6 This is a schematic diagram of the structure of the supplementary rod of this utility model; Figure 7 This utility model Figure 3 A schematic diagram of the structure at point A.

[0013] In the diagram: 1. Fixed base; 2. Linear motor; 3. Self-lubricating clamping assembly; 31. Mounting base; 32. Bearing plate; 33. Positioning base; 34. Grooved rack mechanism; 341. Cavity rack; 342. Gear groove; 343. Supplementing groove; 344. Limiting groove; 345. Supplementing rod; 3451. Oil guide groove; 3452. Limiting block; 346. Airbag; 347. Lubricating oil piston tube; 348. Support spring; 349. One-way valve; 35. Gear; 36. Clamping arm; 37. Limit seat; 38. Limit rod; 4. Electric cylinder. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-7 This utility model provides a technical solution: The gear and rack driven motor stator gripper includes a fixed base 1, a linear motor 2 fixed to the front end of the fixed base 1, and a self-lubricating gripping assembly 3 mounted on the moving end of the linear motor 2. The self-lubricating gripping assembly 3 includes a mounting base 31, a support plate 32 fixed to the bottom end of the mounting base 31, two positioning seats 33 fixed to the upper surface of the support plate 32, a grooved rack mechanism 34 slidably connected between the two positioning seats 33, gears 35 meshing with both sides of the grooved rack mechanism 34, the gears 35 being rotatably connected to the support plate 32 via a connecting shaft, and the top of the gears 35 being fixed via a connecting shaft. The mechanism includes a clamping arm 36; the grooved rack mechanism 34 includes a cavity rack 341, the outer wall of the cavity rack 341 is provided with linearly arranged tooth grooves 342 and supplementary grooves 343, the rear end of the inner wall of the cavity rack 341 is provided with a limiting groove 344, the middle part of the inner wall of the cavity rack 341 is slidably connected to a supplementary rod 345, the outer wall of the supplementary rod 345 is provided with an oil guide groove 3451, the front end of the inner side of the supplementary rod 345 is slidably connected to a lubricating oil piston tube 347, the rear end of the lubricating oil piston tube 347 is fixed with a support spring 348, and the rear end of the support spring 348 is fixed with a one-way valve 349. To further explain, the cavity rack 341 has a hollow internal structure, and the lateral projection shape of the replenishing groove 343 is triangular. The replenishing groove 343 is located at the center inside the groove 342. The number of replenishing grooves 343 is the same as the number of grooves 342. The grooves 342 are connected to the interior of the cavity rack 341 through the replenishing grooves 343. The rear end of the cavity rack 341 is fixedly connected to the telescopic end of the electric cylinder 4. The electric cylinder 4 is located on the rear side of the upper surface of the support plate 32. The hollow structure of the cavity rack 341 provides space for oil storage and component installation. The replenishing grooves 343 and the grooves 342 are connected in equal numbers to achieve precise oil replenishment. The triangular structure of the replenishing groove 343 easily forms eddies. The eddy effect can promote the flow and diffusion of oil in the groove, thereby achieving the effect of uniform oil filling. As a further implementation of this solution, the interior of the supplementary rod 345 is a hollow structure, and an airbag 346 is fixed to the rear end of the supplementary rod 345. The transverse projection shape of the oil guide groove 3451 is triangular, and the position of the oil guide groove 3451 corresponds to the position of the supplementary groove 343. A limiting block 3452 is fixed to the rear end of the outer wall of the supplementary rod 345. The limiting block 3452 extends into the interior of the limiting groove 344, and the limiting block 3452 and the limiting groove 344 are slidably connected. Specifically, the cavity of the replenishing rod 345 temporarily stores lubricating oil, the airbag 346 provides a reset spring, the triangular oil guide groove 3451 precisely aligns with the replenishing groove 343, and the limiting block 3452 cooperates with the limiting groove 344 to prevent misalignment, ensuring accurate oil circuit alignment and ensuring efficient delivery of lubricating oil to the meshing surface. As a further implementation of this solution, the center of the lubricating oil piston tube 347 and the center of the cavity rack 341 are located on the same central axis. The lubricating oil piston tube 347 extends to the front of the cavity rack 341. An injection nozzle is fixed in the middle of the front end of the lubricating oil piston tube 347, and a limit seat 37 is fixed on one side of the front end of the lubricating oil piston tube 347. Specifically, the lubricating oil piston tube 347 is coaxial with the cavity rack 341 to ensure smooth movement, and extends forward to facilitate triggering oil replenishment. The injection nozzle is connected to an external oil pipe for timely oil replenishment. The limit seat 37 precisely matches the limit rod 38 to ensure reliable lubrication when the clamping arm 36 is opened to its maximum distance, without the need for manual intervention. As a further implementation of this solution, two positioning seats 33 are located on the front side and the middle of the upper surface of the mounting seat 31, respectively. A limiting rod 38 is fixed to the outside of the positioning seat 33 on the front side, and the position of the limiting rod 38 corresponds to the position of the limiting seat 37. Specifically, the two positioning seats 33 stably support the cavity rack 341 to prevent deviation, and the front limiting rod 38 corresponds to the limiting seat 37 to accurately trigger the movement of the lubricating oil piston tube 347; As a further implementation of this solution, the outer side of the one-way valve 349 is fixedly connected to the inner side of the rack with cavity 341, and the center of the one-way valve 349 and the center of the supplementary rod 345 are located on the same central axis. Specifically, the one-way valve 349 prevents lubricating oil backflow and ensures stable oil pressure to push the replenishing rod 345. The one-way valve 349 and the replenishing rod 345 are coaxial to ensure accurate oil entry, avoid oil circuit deviation leading to insufficient oil replenishment, ensure lubrication effect, reduce wear, and extend equipment life.

[0017] Work process: The fixed base 1 provides installation support for the whole equipment. The linear motor 2 starts and drives the self-lubricating gripping component 3 to move up and down, adjusting the gripper to a height position that matches the motor stator, thus preparing for the gripping operation. When the moving end of the electric cylinder 4 retracts, it pulls the cavity rack 341 of the slotted rack mechanism 34 to move backward. The cavity rack 341 meshes with the gear 35 through the tooth groove 342 on the outer wall, driving the two gears 35 to rotate synchronously, so that the upper clamping arm 36 closes, realizing the stable clamping of the motor stator. During this process, the positioning seat 33 plays a guiding and limiting role for the cavity rack 341 to ensure smooth movement. When the stator needs to be released, the moving end of the electric cylinder 4 extends, pushing the cavity rack 341 forward. Through the meshing of the tooth groove 342 and the gear 35, the clamping arm 36 opens. When the cavity rack 341 moves forward to the maximum distance, the limiting rod 38 on the front positioning seat 33 abuts against the limiting seat 37 at the front end of the lubricating oil piston tube 347. The limiting rod 38 blocks the limiting seat 37 from moving forward and applies pressure, causing the lubricating oil piston tube 347 to move into the cavity rack 341. During the backward movement of the lubricating oil piston tube 347, it compresses the support spring 348 and the air bladder 346, and at the same time, the lubricating oil between it and the one-way valve 349 is forced into the interior of the supplementary rod 345 through the one-way valve 349, which increases the oil pressure inside the supplementary rod 345. The supplementary rod 345 slides along the limiting groove 344 through the limiting block 3452 on the outer wall to ensure the accuracy of movement. When the limiting block 3452 abuts against the rear end of the limiting groove 344, the replenishing rod 345 stops moving and compresses the gas in the airbag 346. At this time, the oil guide groove 3451 on the replenishing rod 345 aligns with the replenishing groove 343 of the cavity rack 341, forming an oil supply channel. Under the action of oil pressure, lubricating oil flows into the gear groove 342 through the oil guide groove 3451 and the replenishing groove 343, automatically replenishing the lubricating oil to the contact surface between the gear groove 342 and the gear 35. When the cavity rack 341 moves away from the limiting rod 38 under the drive of the electric cylinder 4, the lubricating oil piston pipe 347 is reset under the elastic force of the support spring 348, and its front end injection nozzle automatically draws oil from the external oil pipe due to negative pressure. Lubricating oil is drawn in and replenished to the space between the lubricating oil piston tube 347 and the one-way valve 349. At the same time, the replenishing rod 345 is reset under the elastic force of the air bladder 346, and the oil guide groove 3451 and the replenishing groove 343 are misaligned. The misalignment and shielding can reduce the impurities brought up when the tooth groove 342 and the gear 35 mesh into the replenishing groove 343, avoid contaminating the remaining lubricating oil, maintain the cleanliness of the lubricating oil, and eliminate the need for additional shielding components. The protection is achieved by using the existing structure, which simplifies the overall design and ensures that the protection is in place after each operation through stable reset, thereby extending the service life of the device and reducing the frequency of equipment maintenance caused by foreign object blockage or oil contamination.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A motor stator gripper based on rack and pinion drive, comprising a fixed base (1), characterized in that: A linear motor (2) is fixed to the front end of the fixed base (1), and a self-lubricating clamping component (3) is installed on the moving end of the linear motor (2). The self-lubricating clamping assembly (3) includes a mounting base (31), a bearing plate (32) is fixed at the bottom of the mounting base (31), two positioning seats (33) are fixed on the upper surface of the bearing plate (32), a grooved rack mechanism (34) is slidably connected between the two positioning seats (33), gears (35) are meshed on both sides of the grooved rack mechanism (34), and a clamping arm (36) is fixed above the gears (35) through a connecting shaft. The grooved rack mechanism (34) includes a cavity rack (341). The outer wall of the cavity rack (341) is provided with linearly arranged tooth grooves (342) and supplementary grooves (343). The rear end of the inner wall of the cavity rack (341) is provided with a limiting groove (344). A supplementary rod (345) is slidably connected to the middle of the inner wall of the cavity rack (341). An oil guide groove (3451) is provided on the outer wall of the supplementary rod (345). A lubricating oil piston tube (347) is slidably connected to the front end of the inner side of the supplementary rod (345). A support spring (348) is fixed to the rear end of the lubricating oil piston tube (347). A one-way valve (349) is fixed to the rear end of the support spring (348).

2. The motor stator gripper based on rack and pinion drive according to claim 1, characterized in that: The cavity rack (341) has a hollow structure inside. The lateral projection shape of the supplementary groove (343) is triangular. The supplementary groove (343) is located at the center inside the tooth groove (342). The number of supplementary grooves (343) is the same as the number of tooth grooves (342). The tooth groove (342) is connected to the inside of the cavity rack (341) through the supplementary groove (343). The rear end of the cavity rack (341) is fixedly connected to the telescopic end of the electric cylinder (4). The electric cylinder (4) is located on the rear side of the upper surface of the support plate (32).

3. The motor stator gripper based on rack and pinion drive according to claim 1, characterized in that: The interior of the supplement rod (345) is a hollow structure. An airbag (346) is fixed to the rear end of the supplement rod (345). The lateral projection shape of the oil guide groove (3451) is triangular. The position of the oil guide groove (3451) corresponds to the position of the supplement groove (343).

4. The motor stator gripper based on gear and rack drive according to claim 1, characterized in that: A limiting block (3452) is fixed to the rear end of the outer wall of the supplementary rod (345). The limiting block (3452) extends into the interior of the limiting groove (344), and the limiting block (3452) and the limiting groove (344) are slidably connected.

5. The motor stator gripper based on rack and pinion drive according to claim 1, characterized in that: The center of the lubricating oil piston tube (347) and the center of the cavity rack (341) are located on the same central axis. The lubricating oil piston tube (347) extends to the front of the cavity rack (341). An injection nozzle is fixed in the middle of the front end of the lubricating oil piston tube (347). A limit seat (37) is fixed on one side of the front end of the lubricating oil piston tube (347).

6. The motor stator gripper based on gear and rack drive according to claim 1, characterized in that: The two positioning seats (33) are located on the front side and the middle of the upper surface of the mounting seat (31), respectively. A limiting rod (38) is fixed outside the positioning seat (33) on the front side, and the position of the limiting rod (38) corresponds to the position of the limiting seat (37).

7. The motor stator gripper based on gear and rack drive according to claim 1, characterized in that: The outer side of the one-way valve (349) is fixedly connected to the inner side of the toothed rack (341) with cavity, and the center of the one-way valve (349) and the center of the supplementary rod (345) are located on the same central axis.

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