Adjusting structure of screw sleeve feeder

Abstract

The utility model discloses a kind of adjusting structure of screw sleeve feeder, it is related to automobile parts production field, and its technical key points are as follows: including bottom plate, the top of bottom plate is equipped with feeding frame, the inside of feeding frame is equipped with feeding channel, the top of feeding channel is equipped with two limit plates, two The limit plate is formed limit interval with interval, the purpose is to solve the size of each batch of automobile parts is different, the size of different batch automobile parts hole position also changes, so the size of required screw sleeve is also different, but currently the two limit plates of feeding channel are fixedly set, when screw sleeve outer diameter is larger, the spacing between two limit plates is insufficient, leading to screw sleeve jam in the entrance of feeding channel, cannot be transported;When screw sleeve outer diameter is small, the gap between two limit plates is too large, screw sleeve is tilted, overturned in the conveying process due to lack of transverse constraint, even accumulation, cause the technical problem of inconvenient conveying.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing, and in particular to an adjustment structure for a screw sleeve feeder. Background Technology

[0002] In automotive parts manufacturing, threaded inserts are widely used thread reinforcement components. They are typically screwed into pre-machined holes in lightweight materials (such as aluminum alloys and magnesium alloys) of automotive parts to improve the strength, wear resistance, and fatigue resistance of threaded connections. However, traditional manual installation methods suffer from low efficiency and poor consistency. Therefore, automated equipment (such as robotic arms working with threaded insert feeders) has gradually become the mainstream. The core function of a threaded insert feeder is to transport the threaded inserts from the feed channel to the gripping point through vibration, so that the robotic arm can grasp and install the threaded inserts.

[0003] Screw sleeve feeders typically have two limiting plates on their feeding channel. Their function is to restrict the lateral freedom of the screw sleeves, ensuring stable transport along the centerline of the feeding channel. However, the size of each batch of automotive parts varies, as do the hole sizes between different batches, thus requiring different sizes of screw sleeves. Currently, the two limiting plates on the feeding channel are fixed. When the outer diameter of the screw sleeve is large, the distance between the two limiting plates is insufficient, causing the screw sleeve to get stuck at the entrance of the feeding channel and preventing transport. When the outer diameter of the screw sleeve is small, the gap between the two limiting plates is too large, causing the screw sleeve to tilt, flip, or even pile up during transport due to the lack of lateral constraint, resulting in inconvenience. Utility Model Content

[0004] To solve the aforementioned technical problems, this utility model provides an adjustment structure for a screw sleeve feeder. The purpose is to address the issue that the size of each batch of automotive parts varies, and the hole sizes of different batches of automotive parts also differ, thus requiring different sizes of screw sleeves. Currently, the two limiting plates of the feeding channel are fixed. When the outer diameter of the screw sleeve is large, the distance between the two limiting plates is insufficient, causing the screw sleeve to get stuck at the entrance of the feeding channel and preventing conveying. When the outer diameter of the screw sleeve is small, the gap between the two limiting plates is too large, causing the screw sleeve to tilt, flip, or even accumulate during conveying due to the lack of lateral restraint, resulting in inconvenient conveying.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] An adjusting structure for a screw sleeve feeder includes a base plate. A feeding frame is located at the top of the base plate. A feeding channel is located inside the feeding frame. Two limiting plates are located at the top of the feeding channel, forming a limiting interval. A transmission seat is located at the bottom of the feeding channel, inside the feeding frame. A transmission cavity is formed inside the transmission seat, extending through both sides of the transmission seat. Two transmission plates are slidably connected to the upper and lower sides of the transmission cavity. One side of each transmission plate has a transmission tooth. The transmission cavity... The transmission base is internally connected to a transmission gear, which is located between the two transmission plates, such that the transmission gear meshes with the transmission teeth of the two transmission plates. The transmission base is externally provided with a transmission motor that drives the transmission gear to rotate. One end of each of the two transmission plates protrudes from both sides of the transmission cavity. A connecting plate is vertically provided at the protruding end of each transmission plate. The connecting plates of the two transmission plates are respectively separated from both sides of the transmission base by a movable gap. An extension plate is provided on one side of the connecting plate, and the extension plate is connected to the adjacent limiting plate.

[0007] When the size of the insert to be screwed in changes, the motor drives the transmission gear to rotate. Because the transmission gear meshes with the transmission convex teeth of the two transmission plates, the rotation of the transmission gear causes the two transmission plates on both sides to slide in opposite directions. Simultaneously, the movement of the two transmission plates causes the connecting plate and extension plate to move, ultimately moving the two limiting plates. This allows the two limiting plates to expand outwards synchronously when conveying inserts with larger outer diameters, thereby widening the limiting interval to accommodate inserts with larger outer diameters and preventing them from blocking the limiting interval. Conversely, when conveying inserts with smaller outer diameters, the two limiting plates move towards the center synchronously, narrowing the limiting interval to accommodate inserts with smaller outer diameters. This ensures that inserts with smaller outer diameters are always laterally constrained during conveying, effectively preventing tilting, overturning, or accumulation. The width of the limiting interval is dynamically adjusted according to the outer diameter of the insert.

[0008] Furthermore, in this application, the transmission cavity is provided with transmission grooves on the upper and lower sides, and the other side of the transmission plate is provided with a transmission slider, which slides in cooperation with the adjacent transmission groove.

[0009] When the rotation of the transmission gear causes the transmission plates on both sides to slide, the transmission slider slides in conjunction with the adjacent transmission groove, thereby completely restricting the degree of freedom of the transmission plate to the horizontal axis, ensuring the straightness of the movement trajectory and improving the stability of the transmission plate during displacement.

[0010] Furthermore, in this application, the transmission seat has rotating grooves at both ends that communicate with the transmission cavity, and a stabilizing bearing is provided inside the rotating groove. The transmission gear has transmission shafts at both ends, and the transmission shafts are rotatably connected to the inner rings of the adjacent stabilizing bearings.

[0011] When the transmission gear rotates, it drives the transmission shafts at both ends to rotate synchronously. Since the transmission shaft is rotatably connected to the inner ring of the adjacent stabilizing bearing, the rotational motion of the transmission shaft is constrained between the inner rings of the bearing, ensuring that the gear rotates only around the axis and eliminating radial or axial displacement.

[0012] Furthermore, in this application, the bottom of the transmission seat is provided with a support seat, the support seat is located inside the feeding frame, and one or more vibration motors are provided inside the support seat.

[0013] Furthermore, in this application, one end of each of the two transmission plates is provided with a plurality of first fixing holes, and one end of the transmission seat is provided with two second fixing holes. Fixing bolts are inserted into the second fixing holes, and the fixing bolts are threadedly engaged with the adjacent first fixing holes.

[0014] Furthermore, in this application, the feeding rack has an internal mounting groove, the bottom of the mounting groove is provided with a plurality of lifting cylinders, the top of the lifting cylinders is provided with a lifting seat, and the support seat is located on the top of the lifting seat, so that the support seat, the transmission seat and the feeding channel are located inside the mounting groove.

[0015] Furthermore, in this application, guide grooves are provided on both sides of the mounting groove, and guide sliders are provided on both sides of the lifting seat. The guide sliders on both sides of the lifting seat slide in cooperation with the guide grooves on both sides of the mounting groove.

[0016] Furthermore, in this application, the top of the feeding rack is provided with a feeding top frame, and the top of the feeding top frame is provided with a feeding port, which is connected to the limiting interval.

[0017] Furthermore, in this application, a limiting top groove is provided on one side of the feeding top frame, and the limiting top groove is connected to the mounting groove, so that the limiting plate is located inside the limiting top groove.

[0018] Furthermore, in this application, the limiting plate is made of a wear-resistant material.

[0019] This utility model has the following beneficial effects:

[0020] When the size of the insert to be screwed in changes, the motor drives the transmission gear to rotate. Because the transmission gear meshes with the transmission convex teeth of the two transmission plates, the rotation of the transmission gear causes the two transmission plates on both sides to slide in opposite directions. Simultaneously, the movement of the two transmission plates causes the connecting plate and extension plate to move, ultimately moving the two limiting plates. This allows the two limiting plates to expand outwards synchronously when conveying inserts with larger outer diameters, thereby widening the limiting interval to accommodate inserts with larger outer diameters and preventing them from blocking the limiting interval. Conversely, when conveying inserts with smaller outer diameters, the two limiting plates move towards the center synchronously, narrowing the limiting interval to accommodate inserts with smaller outer diameters. This ensures that inserts with smaller outer diameters are always laterally constrained during conveying, effectively preventing tilting, overturning, or accumulation. The width of the limiting interval is dynamically adjusted according to the outer diameter of the insert. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the limiting top groove of this utility model.

[0023] Figure 3 This is a schematic diagram of the guide groove of this utility model.

[0024] Figure 4 This is a schematic diagram of the lifting cylinder of this utility model.

[0025] Figure 5 This is a structural schematic diagram of the fixing bolt of this utility model.

[0026] Figure 6 This is a schematic diagram of the structure of the drive motor of this utility model.

[0027] Figure 7 This is a schematic diagram of the transmission plate of this utility model.

[0028] In the attached figures, the following labels are used:

[0029] 1. Base plate; 2. Feeding rack; 3. Mounting slot; 4. Feeding top frame; 5. Feed inlet; 6. Limiting top groove; 7. Limiting interval; 8. Feeding channel; 9. Limiting plate; 10. Extension plate; 11. Connecting plate; 12. Transmission plate; 13. Transmission tooth; 14. Transmission seat; 15. Transmission cavity; 16. Transmission gear; 17. Vibration motor; 18. Transmission shaft; 19. Rotating groove; 20. Stabilizing bearing; 21. Transmission motor; 22. First fixing hole; 23. Second fixing hole; 24. Fixing bolt; 25. Transmission slider; 26. Transmission slide; 27. Support seat; 28. Lifting cylinder; 29. ​​Lifting seat; 30. Guide slider; 31. Guide slide; 32. Movable interval. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Reference Figures 1-7 In some specific embodiments, an adjustment structure for a screw sleeve feeder includes a base plate 1. A feeding frame 2 is provided at the top of the base plate 1. A feeding channel 8 is provided inside the feeding frame 2. Two limiting plates 9 are provided at the top of the feeding channel 8, forming a limiting interval 7. A transmission seat 14 is provided at the bottom of the feeding channel 8, located inside the feeding frame 2. A transmission cavity 15 is provided inside the transmission seat 14, extending through both sides of the transmission seat 14. Two transmission plates 12 are slidably connected to the upper and lower sides of the cavity inside the transmission seat 14. A transmission tooth 13 is provided on one side of each transmission plate 12. A transmission gear 16 is rotatably connected inside the cavity of the seat 14. The transmission gear 16 is located between two transmission plates 12, so that the transmission gear 16 meshes with the transmission teeth 13 of the two transmission plates 12. A transmission motor 21 for driving the transmission gear 16 to rotate is provided outside the transmission seat 14. One end of each of the two transmission plates 12 protrudes from both sides of the transmission cavity 15. A connecting plate 11 is vertically provided at the protruding end of the transmission plate 12. The connecting plates 11 of the two transmission plates 12 are separated from both sides of the transmission seat 14 by a movable gap 32. An extension plate 10 is provided on one side of the connecting plate 11. The extension plate 10 is connected to the adjacent limiting plate 9.

[0034] Through the above technical solution, when the size of the threaded sleeve to be screwed in changes, the motor drives the transmission gear 16 to rotate. Since the transmission gear 16 meshes with the transmission teeth 13 of the two transmission plates 12, the rotation of the transmission gear 16 will cause the two transmission plates 12 to slide in opposite directions (for example, when the gear rotates clockwise, the left transmission plate 12 moves to the left and the right transmission plate 12 moves to the right). Simultaneously, the movement of the two transmission plates 12 will drive the connecting plate 11 and the extension plate 10 to move, and finally drive the two limiting plates 9 to move, so that when conveying threaded sleeves with larger outer diameters, the two limiting plates 9 can... The two limiting plates 9 can expand outward synchronously, thereby increasing the limiting interval 7 so that the limiting interval 7 can accommodate threaded sleeves with larger outer diameters, thus preventing the threaded sleeves with larger outer diameters from blocking the limiting interval 7, so as to facilitate the conveying of threaded sleeves with larger outer diameters; when conveying threaded sleeves with smaller outer diameters, the two limiting plates 9 can move towards the center synchronously, thereby reducing the limiting interval 7 so that the limiting interval 7 can accommodate threaded sleeves with smaller outer diameters, so that the threaded sleeves with smaller outer diameters are always laterally constrained during the conveying process, effectively preventing tilting, overturning or piling up, and thus dynamically adjusting the width of the limiting interval 7 according to the outer diameter of the threaded sleeves.

[0035] Furthermore, the synchronous reverse movement of the two limiting plates 9 (e.g., simultaneously expanding outward or contracting inward through the structure of this application) can always ensure the symmetry of the limiting interval 7. No matter how the limiting interval 7 is adjusted, the screw sleeve is always constrained on the center line of the feeding channel 8, avoiding tilting or deviating from the predetermined path due to unilateral offset. If the two limiting plates 9 can only be adjusted individually, the symmetry of the two limiting plates 9 will need to be considered after individual adjustment. If the positions of the two limiting plates 9 are not symmetrical after adjustment, it will affect the deviation of the screw sleeve's conveying position, making it impossible to keep the screw sleeve in the centered position for conveying.

[0036] Reference Figures 5-7 In some specific embodiments, the cavity of the transmission seat 14 is provided with transmission grooves 26 on the upper and lower sides, and the other side of the transmission plate 12 is provided with a transmission slider 25, which slides in cooperation with the adjacent transmission groove 26.

[0037] With the above technical solution, when the rotation of the transmission gear 16 causes the transmission plates 12 on both sides to slide, the transmission slider 25 slides with the adjacent transmission groove 26, thereby completely restricting the motion freedom of the transmission plate 12 on the horizontal axis, ensuring the straightness of the movement trajectory, and improving the stability of the transmission plate 12 during displacement.

[0038] Reference Figures 5-7 In some specific embodiments, the transmission seat 14 has rotating grooves 19 at both ends that communicate with the transmission cavity 15. The rotating grooves 19 are equipped with stabilizing bearings 20. The transmission gear 16 has transmission shafts 18 at both ends. The transmission shafts 18 are rotatably connected to the inner rings of the adjacent stabilizing bearings 20.

[0039] With the above technical solution, when the transmission gear 16 rotates, the transmission gear 16 will drive the transmission shafts 18 at both ends to rotate synchronously. Since the transmission shaft 18 is rotatably connected to the inner ring of the adjacent stabilizing bearing 20, the rotational motion of the transmission shaft 18 is constrained between the inner rings of the bearing, ensuring that the transmission gear 16 only rotates around the axis and eliminating radial or axial displacement.

[0040] Reference Figure 4 In some specific embodiments, the bottom of the transmission seat 14 is provided with a support seat 27, which is located inside the feeding frame 2, and one or more vibration motors 17 are provided inside the support seat 27.

[0041] Through the above technical solution, the vibration force of the vibration motor 17 is transmitted to the transmission seat 14 through the support seat 27, and then converted into the directional movement of the screw sleeve through the feeding channel 8, thereby driving the screw sleeve to be conveyed along the feeding channel 8.

[0042] Furthermore, the feeding channel 8 can be set with a slight inclination, with the feeding channel 8 tilted towards the discharge port, so that the screw sleeve can be conveyed along the discharge port direction under the action of vibration.

[0043] Reference Figures 1-7 In some specific embodiments, one end of the two transmission plates 12 is provided with a plurality of first fixing holes 22, and one end of the transmission seat 14 is provided with two second fixing holes 23. Fixing bolts 24 are inserted into the second fixing holes 23, and the fixing bolts 24 are threadedly engaged with the adjacent first fixing holes 22.

[0044] With the above technical solution, since the vibration of the vibration motor 17 is transmitted to the transmission seat 14, it is easy to cause the transmission plate 12 to shift. Therefore, when the transmission plate 12 moves to the target position, the first fixing hole 22 and the second fixing hole 23 at the corresponding positions are aligned, and the fixing bolt 24 is inserted into the corresponding second fixing hole 23 and tightened, so that the fixing bolt 24 and the adjacent first fixing hole 22 form a rigid mechanical lock, thereby improving the stability of the transmission plate 12 after the position is adjusted.

[0045] Reference Figure 5 In some specific embodiments, the feeding rack 2 has an installation groove 3 inside, the bottom of the installation groove 3 is provided with multiple lifting cylinders 28, the top of the lifting cylinders 28 is provided with a lifting seat 29, and the support seat 27 is provided on the top of the lifting seat 29, so that the support seat 27, the transmission seat 14 and the feeding channel 8 are located inside the installation groove 3.

[0046] Through the above technical solution, since the installation height of different batches of automotive parts is different, the height of the external robotic arm will also be adjusted to adapt to the processing height of the automotive parts. If the height of the feeding channel 8 is inconvenient, the external robotic arm will be unable to pick up the material. Therefore, after the height of the external robotic arm is adjusted, the lifting cylinder 28 drives the lifting seat 29 to rise and fall, thereby driving the feeding channel 8 to be adjusted to a position that is compatible with the robotic arm so that the external robotic arm can pick up the material.

[0047] Reference Figures 1-3 In some specific embodiments, guide grooves 31 are provided on both sides of the mounting groove 3, and guide sliders 30 are provided on both sides of the lifting seat 29. The guide sliders 30 on both sides of the lifting seat 29 slide in cooperation with the guide grooves 31 on both sides of the mounting groove 3.

[0048] With the above technical solution, when the lifting cylinder 28 drives the lifting seat 29 to rise and fall, the guide sliders 30 on both sides of the lifting seat 29 slide and cooperate with the guide grooves 31 on both sides of the mounting groove 3, thereby strictly limiting the degree of freedom of movement of the lifting seat 29 to the vertical direction and eliminating the possibility of horizontal offset or rotation.

[0049] Reference Figures 1-3 In some specific embodiments, the top of the feeding rack 2 is provided with a feeding top frame 4, and the top of the feeding top frame 4 is provided with a feeding port 5, which is connected to the limiting interval 7.

[0050] With the above technical solution, the feeding top frame 4 is located at the top of the feeding frame 2. The feeding port 5 at its top is usually designed as a funnel-shaped or oblique opening. Utilizing the principle of natural gravity fall, the screw sleeve slides into the limiting interval 7 along the preset path after passing through the feeding port 5, thereby facilitating the feeding of the screw sleeve.

[0051] Reference Figures 1-3 In some specific embodiments, a limiting top groove 6 is provided on one side of the feeding top frame 4. The limiting top groove 6 is connected to the mounting groove 3, so that the limiting plate 9 is located inside the limiting top groove 6.

[0052] With the above technical solution, when the lifting cylinder 28 drives the lifting seat 29 to rise, since the limiting plate 9 is located inside the limiting top groove 6, the limiting top groove 6 limits the highest rising position of the limiting plate 9, preventing the rising position of the feeding channel 8 from exceeding the highest material picking position of the external robotic arm.

[0053] Reference Figures 1-3 In some specific embodiments, the limiting plate 9 is made of wear-resistant material.

[0054] Through the above technical solution, the wear resistance of the limiting plate 9 ensures the long-term stability of the limiting interval 7 and prevents the limiting interval 7 from expanding due to wear.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. An adjustment structure for a screw sleeve feeder, comprising a base plate, a feeding frame on the top of the base plate, a feeding channel inside the feeding frame, and two limiting plates on the top of the feeding channel, the two limiting plates being spaced apart to form a limiting interval, characterized in that... The bottom of the feeding channel is provided with a transmission seat, which is located inside the feeding frame. The transmission seat has a transmission cavity inside, which extends through both sides of the transmission seat. Two transmission plates are slidably connected to the upper and lower sides of the transmission cavity. One side of the two transmission plates is provided with transmission teeth. A transmission gear is rotatably connected inside the transmission cavity. The transmission gear is located between the two transmission plates, so that the transmission gear meshes with the transmission teeth of the two transmission plates. A transmission motor that drives the transmission gear is provided outside the transmission seat. One end of each of the two transmission plates protrudes from both sides of the transmission cavity. A connecting plate is vertically provided at the protruding end of each transmission plate. The connecting plates of the two transmission plates are separated from both sides of the transmission seat by a movable gap. One side of the connecting plate is provided with an extension plate, which is connected to the adjacent limiting plate.

2. The adjusting structure of the screw sleeve feeder according to claim 1, characterized in that, The transmission cavity has transmission grooves on the upper and lower sides, and the other side of the transmission plate has a transmission slider, which slides in cooperation with the adjacent transmission groove.

3. The adjusting structure of the screw sleeve feeder according to claim 1, characterized in that, The transmission base has rotating grooves at both ends that connect to the transmission cavity. The rotating grooves are equipped with stabilizing bearings. The transmission gear has transmission shafts at both ends, and the transmission shafts are rotatably connected to the inner rings of the adjacent stabilizing bearings.

4. The adjusting structure of the screw sleeve feeder according to claim 1, characterized in that, The bottom of the transmission seat is provided with a support seat, which is located inside the feeding frame, and one or more vibration motors are provided inside the support seat.

5. The adjusting structure of the screw sleeve feeder according to claim 4, characterized in that, One end of each of the two transmission plates is provided with a plurality of first fixing holes, and one end of the transmission seat is provided with two second fixing holes. Fixing bolts are inserted into the second fixing holes, and the fixing bolts are threaded into the adjacent first fixing holes.

6. The adjusting structure of the screw sleeve feeder according to claim 5, characterized in that, The feeding rack has an internal mounting slot, the bottom of which is equipped with multiple lifting cylinders, and the top of each lifting cylinder is equipped with a lifting seat. The support seat is located on top of the lifting seat, so that the support seat, the transmission seat, and the feeding channel are located inside the mounting slot.

7. The adjusting structure of the screw sleeve feeder according to claim 6, characterized in that, The mounting groove has guide grooves on both sides, and the lifting seat has guide sliders on both sides. The guide sliders on both sides of the lifting seat slide in cooperation with the guide grooves on both sides of the mounting groove.

8. The adjusting structure of the screw sleeve feeder according to claim 7, characterized in that, The top of the feeding rack is provided with a feeding top frame, and the top of the feeding top frame is provided with a feeding port, which is connected to the limiting interval.

9. The adjusting structure of the screw sleeve feeder according to claim 8, characterized in that, A limiting groove is provided on one side of the feeding top frame. The limiting groove is connected to the mounting groove, so that the limiting plate is located inside the limiting groove.

10. The adjusting structure of the screw sleeve feeder according to claim 1, characterized in that, The limiting plate is made of wear-resistant material.

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