Valve core positioning and feeding mechanism

Abstract

The present application relates to the technical field of valve core, and discloses a valve core positioning and feeding mechanism, which comprises a base and further comprises a pushing assembly arranged on the upper side of the base and used for pushing the valve core during feeding, a positioning assembly used for positioning the valve core when the valve core moves, and a compensation assembly used for compensating the accumulated tolerance between the valve core and the guide rail, so that the guide rail has a certain micro-offset capability, the hard blockage of the guide rail is avoided, the valve core is prone to be stuck, the posture deflection of the valve core during movement can be adapted, the posture of the valve core can be corrected to a certain extent, the risk of valve core sticking is further reduced, and the positioning and pre-tightening effect of the positioning assembly on the valve core can be adjusted through a detection assembly to limit the valve core through the positioning assembly, reduce the risk of sticking, and improve the positioning accuracy.

Description

Technical Field

[0001] This invention relates to the field of valve core technology, specifically to a valve core positioning and feeding mechanism. Background Technology

[0002] The valve core positioning and feeding mechanism is a feeding mechanism specifically designed for limiting the position based on the structural characteristics of the valve core. This improves the production efficiency of the laser marking machine and enhances the accuracy of the marking position. During valve core positioning and feeding, after the valve core enters the moving channel, it is limited by the guide rail and pushed along the moving channel to the laser marking area for marking processing.

[0003] However, when positioning and conveying valve cores, for valve cores of the same specification, their own tolerances and the cumulative tolerances between them and the guide rail (such as slight deviations in guide rail installation) can cause positional deviations when the valve core enters. This makes it easy for the valve core to jam or accelerate wear during pushing. Furthermore, it is difficult to ensure that the applied pushing force is always located in the center of the valve core during pushing, which can lead to the valve core's posture being skewed or jamming during feeding. In addition, for mixed-line feeding mechanisms that need to convey valve cores of multiple specifications, the different specifications of the valve cores will also affect the risk of jamming. Therefore, all of these factors will affect the positioning and conveying of the valve cores. To address this, we propose a valve core positioning and feeding mechanism. Summary of the Invention

[0004] The purpose of this invention is to provide a valve core positioning and feeding mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a valve core positioning and feeding mechanism, comprising: a base, and a controller disposed on one side of the base; It also includes: a push component, which is set on the upper side of the base and is used to push the valve core during feeding; A positioning component is disposed on the upper side of the base. The positioning component is used to position the valve core when the pushing component pushes the valve core. The detection component is located on the upper side of the base. The detection component is used to detect the valve core diameter and weight, and adaptively adjusts the preload of the positioning component on the valve core according to the detected valve core diameter and weight. The touch component is located on one side of the base. Based on the valve core diameter and weight detected by the detection component, the touch component adaptively adjusts the safety limit of the push component when pushing the valve core.

[0006] The pushing component includes a servo motor fixedly connected to the upper side of the base. The output end of the servo motor is fixedly connected to a lead screw that is rotatably connected to the base. A mounting seat is threaded onto the lead screw. The mounting seat is slidably mounted on the upper side of the base. Limiting rods that are symmetrically fixedly connected to the base and slidably connected to the mounting seat are also fixedly connected to the base.

[0007] The first electric actuator is fixedly connected to one side of the mounting base, and a push block is fixedly connected to the telescopic end of the first electric actuator. A corrugated tube is sleeved on the outside of the lead screw, and the two ends of the corrugated tube are fixedly connected to the mounting base and the base, respectively.

[0008] The positioning component includes two guide rails set on the upper side of the base, and a positioning channel is provided on the base. The two guide rails are symmetrically arranged on both sides of the positioning channel.

[0009] The base has a bracket fixedly connected to one side, a second electric push rod fixedly connected to the bracket, a stop block fixedly connected to the telescopic end of the second electric push rod, and a through-beam sensor set on the lower side of the stop block and the upper side of the base. The lower through-beam sensor is located in the middle of the positioning channel.

[0010] Among them, telescopic rods are fixedly connected at equal intervals on the two guide rails that are far apart from each other. A mounting frame is fixedly connected to the other end of the telescopic rod. The mounting frame is slidably set with the base. Springs are fixedly connected at equal intervals between the guide rails and the mounting frame. The springs are sleeved on the outside of the telescopic rods. The telescopic end of the first servo electric cylinder is fixedly connected to one side of the mounting frame. The first servo electric cylinder is fixedly connected to the upper side of the base.

[0011] A second servo electric cylinder is fixedly connected to the other side of the mounting bracket, and a limit frame is fixedly connected to the telescopic end of the second servo electric cylinder.

[0012] The detection component includes a frame fixedly connected to one side of the base, a detection element is installed on the upper side of the base, distance sensors are installed on the upper side of the detection element and the lower side of the frame, and a gravity sensor is installed on the lower side of the base below the detection element.

[0013] The touch component includes a touch box fixedly connected to one side of the base. A third servo cylinder is fixedly connected to the inside of the touch box. The telescopic end of the third servo cylinder is fixedly connected to a connecting block that slides to the bottom of the inside of the touch box. An electromagnet is fixedly connected to one side of the connecting block.

[0014] The touch box has a mounting plate fixedly connected to the bottom inside. A pressure sensor is set on one side of the mounting plate, and a pressure block is set on the other side of the pressure sensor. A limiting groove that cooperates with the pressure block is set on the bottom inside the touch box, and a magnetic block that repels the electromagnet is fixedly connected to one side of the pressure block.

[0015] This invention has at least the following beneficial effects: This invention uses a pushing component to move the valve core along the positioning channel to the left marking area. The positioning component positions the valve core during movement and compensates for accumulated tolerances between the valve core and the guide rail, allowing the guide rail to have a certain degree of slight offset capability. This prevents the guide rail from forming a hard obstruction, which could cause the valve core to jam. It also accommodates situations where the valve core's posture deviates during movement and can correct its posture, further reducing the risk of jamming. A detection component can detect the valve core's diameter and weight, adjusting the positioning pre-tightening effect of the positioning component to further reduce jamming risk and improve positioning accuracy. Different valve core specifications have different jamming risks. A touch control component can adaptively adjust the safety limit of the pushing component based on the valve core's diameter and weight detected by the detection component, preventing severe jamming and component damage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the bellows of the present invention; Figure 3 This is a schematic diagram of the positioning component of the present invention; Figure 4 This is a partial structural schematic diagram of the base of the present invention; Figure 5 This is a schematic diagram of the block connection structure of the present invention; Figure 6 This is a schematic diagram of the structure of the detection component and the base in the present invention after an explosion. Figure 7 This is a cross-sectional view of the internal structure of the touch box of the present invention; Figure 8 This is a schematic diagram of the partial explosion of the touch box, pressure block, and magnetic block of the present invention.

[0017] In the diagram: 11. Base; 12. Controller; 2. Pushing assembly; 21. Servo motor; 22. Lead screw; 23. Mounting base; 24. Limiting rod; 25. Bellows; 26. First electric push rod; 27. Pushing block; 3. Positioning assembly; 31. Guide rail; 32. Positioning channel; 33. Bracket; 34. Stop block; 35. Second electric push rod; 36. Through-beam sensor; 37. First servo cylinder; 38. Mounting frame; 39. Telescopic rod; 310. Spring; 311. Second servo cylinder; 312. Limiting frame; 4. Detection assembly; 41. Frame; 42. Detection component; 43. Distance sensor; 44. Gravity sensor; 5. Touch assembly; 51. Touch box; 52. Third servo cylinder; 53. Electromagnet; 54. Pressure block; 55. Magnetic block; 56. Mounting plate; 57. Pressure sensor; 58. Limiting groove; 59. Connecting block. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1 Please see Figures 1 to 8 The present invention provides a technical solution: a valve core positioning and feeding mechanism, including a base 11, and a controller 12 is provided on one side of the base 11; It also includes: a push component 2, which is disposed on the upper side of the base 11 and is used to push the valve core during feeding; Positioning component 3 is disposed on the upper side of base 11. Positioning component 3 is used to position the valve core when the pushing component 2 pushes the valve core. The detection component 4 is set on the upper side of the base 11. The detection component 4 is used to detect the valve core diameter and weight, and adaptively adjusts the pre-tightening effect of the positioning component 3 on the valve core according to the detected valve core diameter and weight. The touch component 5 is located on one side of the base 11. The touch component 5 adaptively adjusts the safety limit of the push component 2 when pushing the valve core according to the valve core diameter and weight detected by the detection component 4.

[0020] During valve core positioning and feeding, the valve core enters the positioning channel 32. The pushing component 2 pushes the valve core along the positioning channel 32 to the left marking area. The positioning component 3 positions the valve core during movement and compensates for the cumulative tolerance between the valve core and the guide rail 31, giving the guide rail 31 a certain degree of slight offset capability. This prevents the guide rail 31 from forming a hard obstruction, which could cause the valve core to jam. This also accommodates situations where the valve core's posture deviates during movement and can correct the valve core's posture to a certain extent, further reducing the risk of valve core jamming. The detection component 4 can detect the valve core's diameter and weight and adjust the positioning pre-tightening effect of the positioning component 3 on the valve core. The positioning component 3 restricts the valve core, reducing the risk of jamming and improving positioning accuracy. Different specifications of valve cores have different jamming risks. The touch component 5 can adaptively adjust the safety limit of the pushing component 2 when pushing the valve core based on the valve core diameter and weight detected by the detection component 4, preventing severe jamming and damage to components.

[0021] The push component 2 includes a servo motor 21 fixedly connected to the upper side of the base 11. The output end of the servo motor 21 is fixedly connected to a lead screw 22 that is rotatably connected to the base 11 via a bearing. A mounting seat 23 is threaded onto the lead screw 22. The mounting seat 23 is slidably disposed on the upper side of the base 11. A limiting rod 24 is symmetrically fixedly connected to the base 11 and is slidably disposed with the mounting seat 23. The limiting rod 24 can limit the movement of the mounting seat 23.

[0022] A first electric actuator 26 is fixedly connected to one side of the mounting base 23. A push block 27 is fixedly connected to the telescopic end of the first electric actuator 26. A bellows 25 is sleeved on the outside of the lead screw 22. The two ends of the bellows 25 are fixedly connected to the mounting base 23 and the base 11, respectively. When the mounting base 23 moves, the bellows 25 extends and retracts, and the bellows 25 can protect the lead screw 22.

[0023] The controller 12 controls the telescopic end of the first electric push rod 26 to move the push block 27 down to the height of the valve core, and controls the output end of the servo motor 21 to drive the lead screw 22 to rotate, driving the mounting base 23 to move to the left, so as to push the valve core to move through the push block 27 to achieve feeding.

[0024] The positioning component 3 includes two guide rails 31 disposed on the upper side of the base 11. The end of the guide rail 31 near the bracket 33 is set in an arc shape, which can facilitate the valve core to enter between the two guide rails 31. The base 11 is provided with a positioning channel 32. The two guide rails 31 are symmetrically arranged on both sides of the positioning channel 32. The inner side of the guide rail 31 can be provided with a polyurethane layer or coating to protect the surface of the valve core from scratches and to fill the surface roughness gaps, thereby increasing the stability of valve core delivery.

[0025] A bracket 33 is fixedly connected to one side of the base 11. A second electric push rod 35 is fixedly connected to the bracket 33. A stop block 34 is fixedly connected to the telescopic end of the second electric push rod 35. A through-beam sensor 36 is provided on the lower side of the stop block 34 and the upper side of the base 11. The lower through-beam sensor 36 is located in the middle of the positioning channel 32. The two through-beam sensors 36 are the transmitting end and the receiving end, respectively. The number of valve cores being transported can be detected by the through-beam sensor 36. A first groove matching the lower through-beam sensor 36 is provided on the base 11 at the location of the lower through-beam sensor 36. The lower through-beam sensor 36 is located in the first groove to prevent the lower through-beam sensor 36 from protruding out of the positioning channel 32 and obstructing the transport of the valve cores. A second groove matching the upper through-beam sensor 36 is provided on the lower side of the stop block 34. The upper through-beam sensor 36 is located in the second groove to prevent the upper through-beam sensor 36 from protruding out of the lower edge of the stop block 34 and causing damage when the stop block 34 moves down.

[0026] Two guide rails 31 are fixedly connected at equal intervals on opposite sides. A mounting bracket 38 is fixedly connected to the other end of each guide rail 31. The mounting bracket 38 is slidably mounted on the base 11. A guide groove matching the mounting bracket 38 is provided on the upper side of the base 11. The mounting bracket 38 is slidably mounted along the guide groove, which can guide and limit the movement of the mounting bracket 38. Springs 310 are fixedly connected at equal intervals between the guide rails 31 and the mounting bracket 38. The springs 310 are sleeved on the outside of the guide rails 39. The telescopic end of the first servo electric cylinder 37 is fixedly connected to one side of the mounting bracket 38. The first servo electric cylinder 37 is fixedly connected to the upper side of the base 11.

[0027] The telescopic rod 39 and spring 310 allow for slight offset compensation of the guide rail 31, absorbing the accumulated tolerance between the valve core and the guide rail 31, effectively reducing the positioning deviation during valve core delivery, and avoiding valve core jamming due to slight misalignment. Thus, the floating design of the guide rail 31 can also reduce the risk of jamming caused by valve core tilt and improve positioning accuracy.

[0028] A second servo cylinder 311 is fixedly connected to the other side of the mounting bracket 38. The telescopic end of the second servo cylinder 311 is fixedly connected to a limit bracket 312. After the valve core is delivered to the left marking area by the pushing component 2, the controller 12 controls the telescopic end of the second servo cylinder 311 to extend, driving the limit bracket 312 to move closer to the guide rail 31. The limit brackets 312 on both sides restrict the guide rails 31 respectively, maintaining the stability of the valve core between the two guide rails 31 to ensure the laser marking effect. A pressure detection sensor can be set on the side of the limit bracket 312 close to the guide rail 31 to detect the limiting effect of the limit bracket 312 on the guide rail 31. When the required limiting force is reached, the controller 12 automatically controls the second servo cylinder 311 to stop working.

[0029] The detection component 4 includes a frame 41 fixedly connected to one side of the base 11. A detection element 42 is provided on the upper side of the base 11. The inner side of the detection element 42 is configured as a channel matching the positioning channel 32. Distance sensors 43 are respectively provided on the upper side of the detection element 42 and the lower side of the frame 41. The two distance sensors 43 correspond to each other. The lower distance sensor 43 is located in the middle of the channel inside the detection element 42. The detection element 42 is provided with a matching third groove at the location of the lower distance sensor 43. The lower distance sensor 43 is set in the third groove to prevent the lower distance sensor 43 from protruding out of the inner channel of the detection element 42 and thus hindering the movement of the valve core. A gravity sensor 44 is provided on the lower side of the base 11 at the detection element 42. The base 11 is provided with a mounting groove at the location of the detection element 42. The mounting groove matches the detection element 42. The detection element 42 is set and confined in the mounting groove. The gravity sensor 44 is set in the mounting groove. The distance sensor 43 and the gravity sensor 44 are electrically connected to the first servo electric cylinder 37.

[0030] After the valve core enters the positioning channel 32, the through-beam sensor 36 detects that the valve core has passed through. After the valve core is detected, the extension end of the second electric push rod 35 is controlled to move the stop block 34 down to prevent the subsequent valve core from passing through. The push assembly 2 pushes the valve core to the detection area, that is, to the upper side of the detection piece 42. The valve core diameter can be detected by the distance sensor 43, and the valve core weight can be detected by the gravity sensor 44. The distance between the two distance sensors 43 is fixed. When the valve core diameter is large, the distance detected by the distance sensor 43 will be smaller, which will result in a relatively large output signal current of the distance sensor 43. Through the controller 12, the power of the first servo cylinder 37 can be controlled to be relatively large, so that the extension end of the first servo cylinder 37 is shortened, and the mounting bracket 38 and the guide rail 31 move outward a relatively large distance to adapt to the valve core with a larger diameter. For the large diameter valve core, when it is pushed by the offset force of the push block 27, its posture will be relatively large. Therefore, the relatively large movement distance of the guide rail 31 outward can also reduce the risk of jamming of the large diameter valve core. Conversely, for the small diameter valve core, the distance between the two guide rails 31 will be relatively small after adjustment to prevent the valve core from being unable to be positioned and constrained. Based on the detection and control by the distance sensor 43, when the valve core detected by the gravity sensor 44 is relatively heavy, its output signal current will be relatively large. Through the controller 12, the power of the first servo cylinder 37 can be relatively large, controlling the extension end of the first servo cylinder 37 to extend, driving the mounting bracket 38 and guide rail 31 to move closer to each other by a relatively large distance, so as to improve the pre-tightening force on the heavy valve core. This adapts to the characteristics of the heavy valve core having large inertia, being easy to shake, and requiring relatively large gripping force for restraint. Conversely, for the light valve core, its pre-tightening effect will be relatively small, adapting to the characteristics of the light valve core having small inertia, being easy to jam, and requiring relatively small resistance to allow the valve core to pass smoothly. This can further improve the positioning and feeding effect of the valve core.

[0031] Example 2 The touch component 5 includes a touch box 51 fixedly connected to one side of the base 11. A third servo cylinder 52 is fixedly connected to the inside of the touch box 51. A connecting block 59 that slides on the bottom of the inside of the touch box 51 is fixedly connected to the telescopic end of the third servo cylinder 52. An electromagnet 53 is fixedly connected to one side of the connecting block 59. A distance sensor 43 and a gravity sensor 44 are electrically connected to the third servo cylinder 52.

[0032] A mounting plate 56 is fixedly connected to the bottom inner side of the touch box 51. A pressure sensor 57 is provided on one side of the mounting plate 56, and a pressure block 54 is provided on one side of the pressure sensor 57. The pressure sensor 57 is used to detect the pressure of the pressure block 54. A limiting groove 58 is provided on the bottom inner side of the touch box 51 to cooperate with the pressure block 54. The limiting groove 58 can limit the pressure block 54. A magnetic block 55 that repels the electromagnet 53 is fixedly connected to one side of the pressure block 54. A current sensor is provided on the connection circuit of the servo motor 21 to detect the working current of the servo motor 21. The current sensor is electrically connected to the electromagnet 53.

[0033] By detecting the distance sensor 43 and the gravity sensor 44, when the valve core is heavy and has a large diameter, the controller 12 can make the power of the third servo cylinder 52 relatively large, so that the extension end of the third servo cylinder 52 extends, and drives the connecting block 59 and the electromagnet 53 to move a relatively large distance closer to the pressure block 54. During the process of pushing the valve core by the pushing component 2, if the valve core is stuck, the working current of the servo motor 21 will increase, the magnetism of the electromagnet 53 will be enhanced, and the repulsive force on the magnetic block 55 will be greater, which will make the pressure detected by the pressure sensor 57 greater. When the pressure detected by the pressure sensor 57 reaches the set threshold, it means that the valve core is stuck seriously. At this time, the controller 12 will reduce the pushing speed of the pushing component 2 to try to let the valve core "slide" over to prevent hard jamming. If the subsequent pressure still reaches the set threshold, the servo motor 21 will be controlled to stop working and drive the lead screw 22 to reverse to retreat a certain distance to prevent the surface of the valve core from being scratched. For heavier valve cores with larger diameters, the risk of jamming is relatively high, and the consequences of jamming are also relatively serious. However, by using the third servo electric cylinder 52 to drive the connecting block 59 and the electromagnet 53 to move, the distance between the electromagnet 53 and the magnetic block 55 can be made relatively small after the movement. Thus, with a relatively small operating current of the servo motor 21, the pressure detected by the pressure sensor 57 can reach the set threshold. This is equivalent to reducing the safety limit of the pushing component 2 when pushing the valve core, so as to prevent serious jamming and damage to the components.

[0034] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve core positioning and feeding mechanism, including: A base, on one side of which a controller is provided; The feature is that it further includes: a pushing component, which is disposed on the upper side of the base, and is used to push the valve core during feeding; A positioning component is disposed on the upper side of the base, and the positioning component is used to position the valve core when the pushing component pushes the valve core. A detection component is disposed on the upper side of the base. The detection component is used to detect the valve core diameter and weight, and adaptively adjust the pre-tightening effect of the positioning component on the valve core according to the detected valve core diameter and weight. A touch component is disposed on one side of the base. The touch component adaptively adjusts the safety limit of the push component when pushing the valve core according to the valve core diameter and weight detected by the detection component.

2. The valve core positioning and feeding mechanism according to claim 1, characterized in that: The pushing component includes a servo motor fixedly connected to the upper side of the base. The output end of the servo motor is fixedly connected to a lead screw that is rotatably connected to the base. A mounting seat is threaded onto the lead screw. The mounting seat is slidably disposed on the upper side of the base. Limiting rods that are symmetrically fixedly connected to the base and slidably disposed with the mounting seat are fixedly connected to the mounting seat.

3. The valve core positioning and feeding mechanism according to claim 2, characterized in that: A first electric actuator is fixedly connected to one side of the mounting base. A push block is fixedly connected to the telescopic end of the first electric actuator. A corrugated tube is sleeved on the outside of the lead screw. The two ends of the corrugated tube are fixedly connected to the mounting base and the base, respectively.

4. The valve core positioning and feeding mechanism according to claim 1, characterized in that: The positioning component includes two guide rails disposed on the upper side of the base, and the base is provided with a positioning channel. The two guide rails are symmetrically disposed on both sides of the positioning channel.

5. The valve core positioning and feeding mechanism according to claim 4, characterized in that: A bracket is fixedly connected to one side of the base, and a second electric push rod is fixedly connected to the bracket. A stop block is fixedly connected to the telescopic end of the second electric push rod. A through-beam sensor is provided on the lower side of the stop block and the upper side of the base, with the lower through-beam sensor located in the middle of the positioning channel.

6. The valve core positioning and feeding mechanism according to claim 4, characterized in that: Telescopic rods are fixedly connected at equal intervals on the two guide rails that are far apart from each other. A mounting bracket is fixedly connected to the other end of the telescopic rod. The mounting bracket is slidably disposed with respect to the base. Springs are fixedly connected at equal intervals between the guide rails and the mounting bracket. The springs are sleeved on the outside of the telescopic rods. The telescopic end of a first servo electric cylinder is fixedly connected to one side of the mounting bracket. The first servo electric cylinder is fixedly connected to the upper side of the base.

7. The valve core positioning and feeding mechanism according to claim 6, characterized in that: A second servo electric cylinder is fixedly connected to the other side of the mounting bracket, and a limit frame is fixedly connected to the telescopic end of the second servo electric cylinder.

8. The valve core positioning and feeding mechanism according to claim 1, characterized in that: The detection assembly includes a frame fixedly connected to one side of the base. A detection element is provided on the upper side of the base. Distance sensors are provided on the upper side of the detection element and the lower side of the frame. A gravity sensor is provided on the lower side of the base below the detection element.

9. The valve core positioning and feeding mechanism according to claim 1, characterized in that: The touch component includes a touch box fixedly connected to one side of the base. A third servo cylinder is fixedly connected to the inside of the touch box. The telescopic end of the third servo cylinder is fixedly connected to a connecting block that slides on the bottom of the inside of the touch box. An electromagnet is fixedly connected to one side of the connecting block.

10. The valve core positioning and feeding mechanism according to claim 9, characterized in that: An installation plate is fixedly connected to the bottom inner side of the touch box. A pressure sensor is provided on one side of the installation plate, and a pressure block is provided on one side of the pressure sensor. A limiting groove that cooperates with the pressure block is provided on the bottom inner side of the touch box. A magnetic block that repels the electromagnet is fixedly connected to one side of the pressure block.

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