A worm positioning mechanism

Abstract

The worm positioning mechanism comprises a positioning assembly, the positioning assembly comprises a mounting plate, a positioning block, a connecting rod and a displacement detection mechanism, the positioning block is movably arranged on the mounting plate, the positioning block is provided with a positioning head, the shape of the positioning head corresponds to the shape of the helical tooth of the motor worm, and when positioning, the positioning head abuts against the helical tooth of the motor worm; the connecting rod is rotatably arranged on the mounting plate through a rotating shaft, the first end of the connecting rod is connected with the positioning block; the displacement detection mechanism comprises an elastic component, a contact head and a displacement sensor, the contact head is telescopically arranged through a connecting elastic component, the contact head abuts against the second end of the connecting rod, and the displacement sensor is used for positioning the moving distance of the contact head; the worm positioning mechanism designed in the scheme is used for positioning the best meshing position of the helical tooth of the motor worm when the worm is assembled with the turbine.

Description

Technical Field

[0001] This invention relates to the field of worm gear inspection structure technology, and more specifically to a worm gear positioning mechanism. Background Technology

[0002] Worm gears are a common mechanical structure. During assembly, the helical teeth of the worm gear and the gears of the worm turbine need to mesh. Misalignment during assembly can cause jamming between the worm and the worm. In products, after the worm and motor are assembled, the motor drives the worm to rotate. The worm then needs to be assembled with the worm turbine. Traditionally, automated equipment is used for this assembly. A robotic arm drives the worm turbine downwards to align with the helical teeth on the upper surface of the worm. However, since the position of the robotic arm is fixed, while the position of the helical teeth on the worm turbine's upper surface changes according to the worm's rotation, if the worm is not rotated to align the helical teeth with the worm turbine's teeth, jamming will occur during assembly, affecting product quality.

[0003] It should be noted that the above description of the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of the present invention and facilitating understanding by those skilled in the art. It should not be assumed that the above technical solutions are known to those skilled in the art simply because they have been described in the background section of this invention. Summary of the Invention

[0004] To overcome the above-mentioned shortcomings, the present invention aims to provide a worm positioning mechanism that uses a motor to drive the worm to rotate and positions the worm at a designated position where it meshes with the turbine, thereby effectively solving the technical problem of jamming between the turbine and the worm during assembly.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a worm gear positioning mechanism, comprising a device body, wherein the device body includes a positioning component, and the positioning component includes a mounting plate, a positioning block, a connecting rod, and a displacement detection mechanism, wherein...

[0006] The positioning block is movably mounted on the mounting plate. The positioning block is provided with a positioning head. The shape of the positioning head corresponds to the shape of the helical teeth of the motor worm gear. During positioning, the positioning head abuts against the helical teeth of the motor worm gear.

[0007] The connecting rod is rotatably mounted on the mounting plate via a pivot, and the first end of the connecting rod is connected to the positioning block;

[0008] The displacement detection mechanism includes an elastic component, a contact head, and a displacement sensor. The contact head is telescopically connected to the elastic component and rests against the second end of the connecting rod. The displacement sensor is used to locate the movement distance of the contact head.

[0009] This design incorporates a worm gear positioning mechanism. When the motor drives the worm gear to rotate, the positioning head on the positioning block moves from one end of the worm to the other under the influence of the spiral tooth surface of the worm. The positioning head drives the positioning block to move, and the movement of the positioning block acts on the connecting rod, causing displacement at the second end of the connecting rod. Since the contact head always rests against the second end of the connecting rod under the action of the elastic component, the contact head also moves when the second end of the connecting rod moves. The displacement sensor detects the displacement of the contact head and pre-sets that when the displacement of the contact head reaches a certain value, the position of the spiral tooth surface on the worm gear can mesh perfectly with the subsequently assembled worm tooth surface.

[0010] The beneficial effects of this invention are as follows: The worm positioning mechanism designed in this solution can locate the optimal meshing part between the motor worm helical teeth and the turbine during assembly based on the above structural principle, thereby effectively solving the technical problem of jamming during turbine and worm assembly. It has high positioning accuracy and is convenient and quick to use.

[0011] Furthermore, the device body also includes a limiting component, which includes a fixture, a support platform, and a pressure block. The fixture is disposed on the support platform, and the motor and worm gear are placed inside the fixture. When the device is in the limiting position, the pressure block presses on the surface of the motor. The positioning component is used to limit and fix the product. The motor and worm gear are assembled and placed inside the fixture. When the device is in the limiting position, the pressure block presses on the motor to prevent the motor from shifting position when rotating.

[0012] Furthermore, the device body also includes a lifting platform, the mounting plate is disposed on the lifting platform, the pressure block is disposed on the mounting plate, and the mounting plate is also provided with a limit rod, the limit rod containing a spring; the lifting mechanism drives the entire structure on the mounting plate to rise and fall. Since there is oil on the surface of the motor and the worm gear during product positioning, the positioning head and pressure block can easily pull the product out of the fixture after positioning is completed. Therefore, a limit rod is provided, and a spring is disposed inside the limit rod. During positioning, the bottom of the limit rod presses against the product, at which time the spring is in a compressed state. When positioning is completed, the mounting plate rises, the limit rod disengages from the product, and the spring's rebound force can act on the product, effectively preventing the product from being pulled out of the fixture due to the viscosity of the oil.

[0013] Furthermore, the device body also includes an energizing component for energizing the motor. The energizing component includes an energizing head and a first cylinder. The first cylinder drives the energizing head to move. During operation, the energizing head, driven by the first cylinder, contacts the energizing end of the motor, thereby conducting electricity and enabling the motor to rotate.

[0014] Furthermore, the power-on assembly also includes a base and a quick-change seat, the power-on head is disposed on the quick-change seat, the quick-change seat is detachably connected to the base, and the actuating end of the first cylinder is connected to the base; by removing the quick-change seat from the base, the power-on head can be quickly replaced, thus making it suitable for various types of motors.

[0015] The mounting plate is also equipped with a pushing mechanism and an elastic mechanism. The pushing mechanism includes a push rod and a second cylinder. The push rod is connected to the actuating end of the second cylinder, and the pushing end of the push rod is correspondingly positioned with the positioning block. The elastic mechanism includes a push rod with a spring inside. The push rod abuts against the second end of the connecting rod. The principle of the cooperation between the pushing mechanism and the elastic mechanism is as follows: Before positioning, the push rod of the pushing mechanism drives the positioning block through the second cylinder, so that the positioning head on the positioning block is initially located at the edge of the worm gear helical tooth surface. This ensures that when the worm rotates, the positioning head moves from one end of the worm to the other around the helical surface. At the same time, after the push rod pushes the positioning block to the designated position, the second cylinder will retract the push rod. In order to ensure that the positioning head abuts against the edge of the worm gear helical tooth in the initial state, the push rod abuts against the second end of the connecting rod under the action of the spring. The transmission is transmitted to the positioning block through the connecting rod, so that the positioning head abuts against the edge of the worm gear helical tooth, ensuring that the worm can directly drive the positioning head to move when it rotates.

[0016] Furthermore, a rotating roller is provided at the first end of the connecting rod, and an oblong hole is provided on the positioning block, with the rotating roller disposed within the oblong hole; the structural fit between the rotating roller and the oblong hole prevents jamming between the first end of the connecting rod and the positioning block.

[0017] Furthermore, the intermediate component of the connecting rod is mounted on the mounting plate via a pivot; the mounting plate is provided with a linear slide rail, and the positioning block is linearly translatable on the linear slide rail via a slider; the connecting rod rotates around the pivot on the mounting plate, and the positioning block is guided to translate on the mounting plate via the linear slide rail.

[0018] Furthermore, the mounting plate is equipped with an infrared sensor corresponding to the positioning block; when the device is positioned, once the positioning head moves to the designated position on the helical tooth surface of the worm, the device is powered off, and the motor and worm stop rotating. If the positioning head moves from one end of the worm to the other end of the worm, and the displacement of the positioning contact head of the displacement sensor has not reached the designated value, the infrared sensor will sense the positioning block, the device will be powered off, and this worm product will be unqualified. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a device according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the structural state of a positioning component before positioning, according to an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the structural state of a positioning component during positioning according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of a limiting component structure according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of a power-conducting component according to an embodiment of the present invention.

[0024] In the diagram: 1. Mounting plate; 2. Positioning block; 3. Connecting rod; 4. Positioning head; 5. Motor; 6. Worm gear; 8. Rotating shaft; 9. Elastic component; 10. Contact head; 11. Displacement sensor; 12. Fixture; 13. Support platform; 14. Pressure block; 15. Lifting platform; 16. Limiting rod; 17. Power-on head; 18. First cylinder; 19. Base; 20. Quick-change seat; 21. Push rod; 22. Second cylinder; 23. Top rod; 24. Rotary roller; 25. Waist-shaped hole; 26. Linear slide rail; 27. Infrared sensor;

[0025] 3a, First end; 3b, Second end. Detailed Implementation

[0026] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0027] Please see Figures 1-5It should be noted that in the description of this invention, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These terms are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] See Figures 1-3 As shown, an embodiment of the present invention discloses a worm gear positioning mechanism, including a device body, the device body including a positioning component, the positioning component including a mounting plate 1, a positioning block 2, a connecting rod 3, and a displacement detection mechanism, wherein:

[0030] The positioning block 2 is movably mounted on the mounting plate 1. The positioning block 2 is provided with a positioning head 4. The shape of the positioning head 4 corresponds to the shape of the helical teeth of the worm gear 6 of the motor 5. During positioning, the positioning head 4 abuts against the helical teeth of the worm gear 6 of the motor 5.

[0031] The connecting rod 3 is rotatably mounted on the mounting plate 1 via the rotating shaft 8, and the first end 3a of the connecting rod 3 is connected to the positioning block 2;

[0032] The displacement detection mechanism includes an elastic component 9, a contact head 10, and a displacement sensor 11. The contact head 10 is telescopically connected to the elastic component 9 and abuts against the second end 3b of the connecting rod 3. The displacement sensor 11 is used to locate the movement distance of the contact head 10.

[0033] The principle of achieving the designated position for the positioning worm gear helical teeth to mesh with the turbine in the above embodiment is as follows: When the motor 5 drives the worm gear to rotate, the positioning head 4 on the positioning block 2 will move from one end of the worm gear 6 to the other end of the worm gear 6 under the drive of the turbine helical tooth surface. The positioning head 4 drives the positioning block 2 to move, and when the positioning block 2 moves, it will act on the connecting rod 3, causing the second end 3b of the connecting rod 3 to be displaced. Since the contact head 10 always abuts against the second end 3b of the connecting rod 3 under the action of the elastic component 9, the contact head 10 will also move when the second end 3b of the connecting rod 3 moves. The displacement sensor 11 positions the displacement of the contact head 10 and pre-sets that when the displacement of the contact head 10 reaches a certain value, the position of the helical tooth surface on the worm gear 6 can mesh with the turbine tooth surface that is subsequently assembled.

[0034] The motor worm positioning device designed in this scheme can locate the optimal meshing point between the motor worm helical teeth and the turbine during assembly based on the above structural principle. This effectively solves the technical problem of jamming during assembly of the turbine and worm 6. It has high positioning accuracy and is convenient and quick to use.

[0035] Based on the above embodiments, specifically, the device body also includes a limiting component, which includes a fixture 12, a support platform 13 and a pressure block 14. The fixture 12 is disposed on the support platform 13, and the motor 5 and the worm gear 6 are placed inside the fixture 12. When the device is limited, the pressure block 14 presses against the surface of the motor 5.

[0036] The function of the limiting component is to limit and fix the product. The motor 5 and the turbine are assembled and placed in the fixture 12. When limiting, the pressure block 14 presses down on the motor 5 to prevent the motor 5 from shifting position when rotating.

[0037] Based on the above embodiments, specifically, as follows: Figure 4 As shown, the device body also includes a lifting platform 15, the mounting plate 1 is disposed on the lifting platform 15, the pressure block 14 is disposed on the mounting plate 1, and the mounting plate 1 is also provided with a limit rod 16, and a spring is disposed inside the limit rod 16.

[0038] The lifting platform 15 drives the entire structure on the mounting plate 1 to rise and fall. Since there is oil on the surface of the motor 5 and the worm gear 6 when the product is positioned, the positioning head 4 and the pressure block 14 can easily pull the product out of the fixture 12 after positioning. Therefore, a limit rod 16 is set. The limit rod 16 has a spring inside. During positioning, the bottom of the limit rod 16 presses against the product. At this time, the spring is in a compressed state. When positioning is completed, the mounting plate 1 moves upward and the limit rod 16 is separated from the product. At this time, the spring's rebound force can act on the product, effectively preventing the product from being pulled out of the fixture 12 due to the viscosity of the oil.

[0039] Based on the above embodiments, specifically, as follows: Figure 5 As shown, the device body also includes an energizing component for energizing the motor 5. The energizing component includes an energizing head 17 and a first cylinder 18, and the first cylinder 18 drives the energizing head 17 to move.

[0040] During positioning, the energized head 17, driven by the first cylinder 18, will contact the energized end of the motor 5, thereby conducting electricity and energizing the motor 5 to rotate.

[0041] Based on the above embodiments, specifically, the power-on assembly further includes a base 19 and a quick-change seat 20, the power-on head 17 is disposed on the quick-change seat 20, the quick-change seat 20 is detachably connected to the base 19, and the actuating end of the first cylinder 18 is connected to the base 19.

[0042] The power head 17 can be quickly replaced by removing the quick-change bracket 20 from the base 19, thus making it suitable for various models of motors 5.

[0043] Based on the above embodiments, specifically, the mounting plate 1 is further provided with a propulsion mechanism and a flexible mechanism, wherein:

[0044] The propulsion mechanism includes a push rod 21 and a second cylinder 22. The push rod 21 is connected to the working end of the second cylinder 22, and the propulsion end of the push rod 21 is correspondingly arranged with the positioning block 2.

[0045] The elastic mechanism includes a push rod 23, in which a spring is provided, and the push rod 23 abuts against the second end 3b of the connecting rod 3.

[0046] The principle of the cooperation between the propulsion mechanism and the flexible mechanism is as follows: Figure 2 As shown, before positioning, the push rod 21 of the propulsion mechanism drives the positioning block 2 through the second cylinder 22, so that the positioning head 4 on the positioning block 2 is initially located at the edge of the helical tooth surface of the worm 6. This ensures that when the worm 6 rotates, the positioning head 4 moves from one end of the worm 6 to the other end around the helical surface. At the same time, after the push rod 21 pushes the positioning block 2 to the designated position, the second cylinder 22 will retract the push rod 21. In order to ensure that the positioning head 4 abuts against the edge of the helical tooth of the worm 6 in the initial state, the push rod 23 presses against the second end 3b of the connecting rod 3 under the action of the spring, and transmits the power to the positioning block 2 through the connecting rod 3, so that the positioning head 4 abuts against the edge of the helical tooth of the worm 6, ensuring that the worm 6 can directly drive the positioning head 4 to move when rotating.

[0047] Based on the above embodiments, specifically, the first end 3a of the connecting rod 3 is provided with a rotating roller 24, the positioning block 2 is provided with a waist-shaped hole 25, and the rotating roller 24 is disposed in the waist-shaped hole 25.

[0048] The structural cooperation between the rotating roller 24 and the waist-shaped hole 25 prevents jamming between the first end 3a of the connecting rod 3 and the positioning block 2.

[0049] Based on the above embodiments, specifically, the intermediate component of the connecting rod 3 is mounted on the mounting plate 1 via a rotating shaft 8; the mounting plate 1 is provided with a linear slide rail 26, and the positioning block 2 is linearly movable on the linear slide rail 26 via a slider.

[0050] The connecting rod 3 rotates around the pivot 8 on the mounting plate 1, and the positioning block 2 moves horizontally on the mounting plate 1 guided by the linear slide rail 26.

[0051] Based on the above embodiments, specifically, the mounting plate 1 is provided with an infrared sensor 27 corresponding to the positioning block 2.

[0052] When the equipment is positioning, once the positioning head 4 moves to the designated position on the helical tooth surface of the worm 6, the equipment is powered off, and the motor 5 and the worm 6 stop rotating. If the positioning head 4 moves from one end of the worm 6 to the other end of the worm 6, and the displacement of the positioning contact head 10 of the displacement sensor 11 has not reached the designated value, then the infrared sensor 27 senses the positioning block 2, the equipment is powered off, and this worm 6 product is unqualified.

[0053] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A worm gear positioning mechanism, comprising a device body, characterized in that: The device body includes a positioning assembly, which comprises a mounting plate, a positioning block, a connecting rod, and a displacement detection mechanism. The positioning block is movably mounted on the mounting plate. The positioning block is provided with a positioning head. The shape of the positioning head corresponds to the shape of the helical teeth of the motor worm gear. During positioning, the positioning head abuts against the helical teeth of the motor worm gear. The connecting rod is rotatably mounted on the mounting plate via a pivot, and the first end of the connecting rod is connected to the positioning block; The displacement detection mechanism includes an elastic component, a contact head, and a displacement sensor. The contact head is telescopically connected to the elastic component and abuts against the second end of the connecting rod. The displacement sensor is used to locate the movement distance of the contact head. The mounting plate is also equipped with a propulsion mechanism and a flexible mechanism, wherein... The propulsion mechanism includes a push rod and a second cylinder. The push rod is connected to the working end of the second cylinder, and the propulsion end of the push rod is correspondingly arranged with the positioning block. The elastic mechanism includes a push rod, in which a spring is disposed, and the push rod abuts against the second end of the connecting rod.

2. The worm gear positioning mechanism according to claim 1, characterized in that: The device body also includes a limiting component, which includes a fixture, a support platform, and a pressure block. The fixture is disposed on the support platform, and the motor and worm gear are placed inside the fixture. When the device is in the limiting position, the pressure block presses against the surface of the motor.

3. The worm gear positioning mechanism according to claim 2, characterized in that: The device body also includes a lifting platform, the mounting plate is disposed on the lifting platform, the pressure block is disposed on the mounting plate, and a limit rod is also disposed on the mounting plate, with a spring disposed inside the limit rod.

4. The worm gear positioning mechanism according to claim 1, characterized in that: The device body also includes an energizing component for energizing the motor. The energizing component includes an energizing head and a first cylinder, and the first cylinder drives the energizing head to move.

5. The worm gear positioning mechanism according to claim 4, characterized in that: The power supply assembly also includes a base and a quick-change seat. The power supply head is disposed on the quick-change seat, and the quick-change seat is detachably connected to the base. The actuating end of the first cylinder is connected to the base.

6. The worm gear positioning mechanism according to claim 1, characterized in that: The first end of the connecting rod is provided with a rotating roller, the positioning block is provided with a waist-shaped hole, and the rotating roller is disposed in the waist-shaped hole.

7. The worm gear positioning mechanism according to claim 1, characterized in that: The intermediate component of the connecting rod is mounted on the mounting plate via a pivot; the mounting plate is provided with a linear slide rail, and the positioning block is linearly movable on the linear slide rail via a slider.

8. The worm gear positioning mechanism according to claim 1, characterized in that: The mounting plate is equipped with an infrared sensor corresponding to the positioning block.

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