Lighter grinding wheel assembling mechanism
By using a rotating wheel mechanism to achieve coaxial assembly of the lighter grinding wheel, the problems of high jig input and skewed side wheels are solved, thus improving production efficiency and quality.
Patent Information
- Application Number
- CN202520298241.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Existing lighter grinding wheel assembly production lines require a large investment in and recycling of jigs, and the assembly process is prone to problems such as misalignment of the side wheels, which affects assembly efficiency and quality.
The rotating wheel mechanism, through the design of annular grooves and arc grooves, combined with columnar punches and T-heads, enables the coaxial assembly of steel wheels and side wheels, reducing the use of jigs and improving assembly accuracy.
The elimination of the need for repeated jigs reduces production costs, improves the coaxiality and assembly quality of the grinding wheels, and reduces the defect rate.
Smart Images
Figure CN223762645U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of automation equipment, specifically is a lighter grinding wheel assembly mechanism. BACKGROUND
[0002] As Figure 1 And Figure 2 As shown in the prior art, a common lighter grinding wheel, its structure includes steel wheel 1' and the edge wheel 2' arranged at both ends of steel wheel 1', steel wheel 1' has axial through hole 11', and the edge wheel 2' has shaft head 21' towards steel wheel 1'.
[0003] Generally, the assembly mode of lighter grinding wheel is as shown in Figure 2 The edge wheel 2' is placed at both ends of steel wheel 1', and then external force is applied along the axial direction from both ends to make the shaft head 21' of the edge wheel 2' on both sides of steel wheel 1' fit into the through hole to form a tight fit.
[0004] The applicant found in practice that the assembly production line of the lighter grinding wheel has the following defects:
[0005] (1) Since the lighter grinding wheel is three independent components before assembly, the steel wheel 1' and the edge wheel 2' need to be pre-assembled and positioned by using a jig when stamping. According to the usual design idea, in order to realize mass production automation, a large number of jigs for assembling lighter grinding wheels need to be put into use, and a jig recovery mechanism needs to be matched to recycle the jigs. This results in a large amount of cost investment for the production line for jigs and jig recovery mechanisms, and since the jigs need time for feeding and discharging, it will undoubtedly limit the production efficiency.
[0006] (2) Since the lighter grinding wheel is three independent components before assembly, when assembled by using the feeding mode as shown in Figure 2 The axial through hole 11' of steel wheel 1' and the shaft head 21' of the edge wheel 2' at the end are simultaneously impacted, and under the condition that the two ends of the axial through hole 11' exist impact points at the same time, the external force originally applied along the axial direction has a higher probability of deviating from the axial direction in the transmission process, so that the lighter grinding wheel presents the defect as shown in Figure 3 After assembly, that is, the edge wheel 2' is skewed relative to the steel wheel 1' and is no longer coaxial. Once the lighter grinding wheel presents the defect as shown in Figure 3 After assembly, it will be difficult to normally assemble in the lighter and also difficult to normally work in the lighter.
[0007] Therefore, it is urgent to propose a new technical solution for the assembly process of the lighter grinding wheel. INVENTION CONTENTS
[0008] The utility model aims at satisfying the above-mentioned needs of the prior art, and provides a lighter grinding wheel assembly mechanism, and the technical solution is as follows.
[0009] The lighter grinding wheel assembly mechanism comprises an axial horizontal rotating wheel, an annular groove is formed on the outer circular surface of the rotating wheel, the bottom surface of the annular groove is provided with a plurality of circular-arc grooves which are equidistantly distributed around the rotating wheel, the axial direction of the circular-arc grooves is parallel to the rotating wheel; the side walls on both sides of the annular groove are provided with stamping ports corresponding to the circular-arc grooves, and the stamping ports are provided with guide holes formed by reducing the caliber at one end of the circular-arc grooves; a cylindrical punch is inserted in the stamping port, the end of the cylindrical punch away from the circular-arc groove is provided with a T-shaped head which is slidingly fitted in the stamping port, and the end of the cylindrical punch towards the circular-arc groove is slidingly inserted in the guide hole; a spring is sleeved on the cylindrical punch, and the two ends of the spring are respectively abutted against the T-shaped head and the hole along of the guide hole; the end of the T-shaped head extends to the outside of the stamping port, and the two ends of the rotating wheel are respectively provided with limiting devices matched with the T-shaped head to prevent the cylindrical punch from being pulled out of the stamping port; on the side of the circular-arc grooves in the clockwise direction of the rotating wheel, a first guide groove, a second guide groove and a third guide groove are provided in sequence along the width direction of the annular groove, and the leading ends of the first guide groove, the second guide groove and the third guide groove gradually rise to transition to the bottom surface of the annular groove, and the trailing ends gradually sink to cut into the circular-arc grooves.
[0010] Further comprising a blanking module located on the upper edge of the rotating wheel, the bottom end of the blanking module is slidingly fitted in the annular groove, and the bottom end of the blanking module is formed with a circular-arc limiting section matched with the bottom surface of the annular groove, and the bottom surface of the circular-arc limiting section is further provided with a first material distribution port, a second material distribution port and a third material distribution port which penetrate through the blanking module upward; when the rotating wheel rotates, the first material distribution port is located on the rotation track of the first guide groove, the second material distribution port is located on the rotation track of the second guide groove, and the third material distribution port is located on the rotation track of the third guide groove; the second material distribution port is located on the counterclockwise side of the rotating wheel relative to the first material distribution port, and the third material distribution port is located on the clockwise side of the rotating wheel relative to the first material distribution port.
[0011] As an improvement of the above technical solution, the two sides of the rotating wheel are respectively provided with supports, and the opposite sides of the supports are provided with mutually symmetrical passive wheels on the upper edge; the axial direction of the passive wheels is vertical, and the wheel edge of the passive wheels interferes with the outer end of the T-shaped head; when the rotating wheel rotates and the cylindrical punch passes through the passive wheel, the outer end of the T-shaped head is frictionally matched with the wheel edge of the passive wheel, so that the T-shaped head applies an axial impact force to the cylindrical punch.
[0012] Further, the outer end of the T-shaped head is rounded.
[0013] Further, the passive wheel is made of rubber material.
[0014] As another aspect of the above technical solution, the limiting device comprises a threaded hole formed on the edge of the punching opening, and a bolt assembled in the threaded hole; the outer end of the T-shaped head of the columnar punch is provided with a limiting groove on the edge, and the edge of the nut of the bolt is located in the limiting groove.
[0015] As another aspect of the above technical solution, the arc of the circular arc groove moving from the second distribution opening to the first distribution opening is smaller than the arc interval between two adjacent circular arc grooves when the rotating wheel rotates clockwise.
[0016] As another aspect of the above technical solution, the arc of the circular arc groove moving from the first distribution opening to the third distribution opening is larger than the arc interval between two adjacent circular arc grooves when the rotating wheel rotates clockwise.
[0017] As another aspect of the above technical solution, the bottom end of the blanking module is further formed with a tangential separation section tangent to the circular arc limiting section on the side of the rotating wheel in the clockwise direction.
[0018] As another aspect of the above technical solution, the rotating wheel comprises a pair of coaxially arranged rotating discs, and a coaxial middle disc clamped between the rotating discs, wherein the diameter of the middle disc is smaller than that of the rotating discs, the bottom surface of the annular groove is formed by the outer surface of the middle disc, and the sidewall of the annular groove is formed by the wheel rim of the rotating disc.
[0019] As another aspect of the above technical solution, the arc surface of the circular arc groove is provided with a coaxial circular arc rib in the middle, and the circular arc rib is located in the tail end opening range of the second guide groove.
[0020] Compared with the prior art, the utility model has the following beneficial effects:
[0021] (1) The steel wheel and the edge wheel of the lighter grinding wheel are coaxially arranged in the circular arc groove of the rotating wheel rim, and the edge wheel and the steel wheel of the grinding wheel are assembled by applying an axial external force to the columnar punch, without the need of repeatedly placing a jig for assembling the lighter grinding wheel, and without the need of a matching jig recovery mechanism.
[0022] (2) The blanking module distributes the edge wheel at one end of the steel wheel of the lighter grinding wheel, and then distributes the edge wheel at the other end of the steel wheel after completing the unilateral assembly, so that the collision point is halved during each assembly of the edge wheel, the probability of deviation of the originally applied axial external force in the transmission process is lower, the coaxiality of the edge wheel and the steel wheel of the lighter grinding wheel after assembly is significantly improved, and the defective rate is lower.
[0023] Hereinafter, the utility model will be further described in conjunction with the drawings and specific embodiments in the specification. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1It is a structure schematic view of a lighter grinding wheel in the prior art.
[0025] Figure 2 It is Figure 1 It is a structure exploded schematic view of a lighter grinding wheel in the prior art.
[0026] Figure 3 It is Figure 1 It is an assembly schematic view of a lighter grinding wheel in the prior art.
[0027] Figure 4 It is a structure schematic view of the utility model.
[0028] Figure 5 It is a structure exploded schematic view of the utility model.
[0029] Figure 6 It is Figure 5 It is a local enlarged view of B in the utility model.
[0030] Figure 7 It is an assembly schematic view of the limiting device in the utility model.
[0031] Figure 8 It is a working principle schematic view of the limiting device in the utility model.
[0032] Figure 9 It is a structure schematic view of the rotating wheel in the utility model.
[0033] Figure 10 It is a structure exploded schematic view of the rotating wheel in the utility model.
[0034] Figure 11 It is Figure 10 It is a local enlarged view of A in the utility model.
[0035] Figure 12 It is a structure schematic view of the blanking module in the utility model.
[0036] Figure 13 It is a working principle schematic view of the second material distributing port in the utility model.
[0037] Figure 14 It is a working principle schematic view of the first material distributing port in the utility model.
[0038] Figure 15 It is a working principle schematic view of the third material distributing port in the utility model.
[0039] Figure 16 It is a working principle schematic view of the utility model. DETAILED DESCRIPTION
[0040] Please refer to Figures 4 to 16As shown, in one embodiment, the lighter grinding wheel assembly stamping mechanism of the utility model, including one axial horizontal rotating wheel 1, the outer circle surface of rotating wheel 1 forms a coaxial annular groove 2, the bottom surface of annular groove 2 has multiple circular-arc type slots 21 that are distributed equidistantly around rotating wheel 1, the axial direction of circular-arc type slot 21 is parallel to rotating wheel 1;The sidewall of both sides of annular groove 2 is provided with stamping port 22 corresponding to circular-arc type slot 21, and the one end of stamping port 22 towards circular-arc type slot 21 has the guide hole 221 formed by the reduced caliber, and the cylindrical punch 222 is inserted in stamping port 22, the one end of cylindrical punch 222 away from circular-arc type slot 21 is provided with T-shaped head 223 that is slidingly fitted in stamping port 22, and the one end of cylindrical punch 222 towards circular-arc type slot 21 is slidingly inserted in guide hole 221, spring 224 is sleeved on cylindrical punch 222, and the both ends of spring 224 are respectively abutted to T-shaped head 223 and the hole along of guide hole 221;The end of T-shaped head 223 extends to the outside of stamping port 22, and the both ends of rotating wheel 1 are respectively provided with limiting device 225 matched with T-shaped head 223 to prevent cylindrical punch 222 from coming out of stamping port 22;On the side of each circular-arc type slot 21 in the clockwise direction of rotating wheel 1, first guide slot 23, second guide slot 24 and third guide slot 25 are respectively provided, which are sequentially arranged along the width direction of annular groove 2, the leading end of first guide slot 23, second guide slot 24 and third guide slot 25 gradually rises to transition to the bottom surface of annular groove 2, and the trailing end gradually sinks to cut into circular-arc type slot 21;
[0041] Further comprising a blanking module 3 located on the upper edge of rotating wheel 1, the bottom end of blanking module 3 is slidingly fitted in annular groove 2, and the bottom end of blanking module 3 forms a circular-arc limiting section 31 matched with the bottom surface of annular groove 2, and the bottom surface of circular-arc limiting section 31 is further provided with first distribution port 32, second distribution port 33 and third distribution port 34 penetrating through blanking module 3 upward;When rotating wheel 1 rotates, first distribution port 32 is located on the rotation track of first guide slot 23, second distribution port 33 is located on the rotation track of second guide slot 24, and third distribution port 34 is located on the rotation track of third guide slot 25;Second distribution port 33 is located on the counterclockwise side of rotating wheel 1 relative to first distribution port 32, and third distribution port 34 is located on the clockwise side of rotating wheel 1 relative to first distribution port 32.
[0042] The lighter grinding wheel assembly stamping mechanism in the above embodiment takes rotating wheel 1 as a jig for carrying lighter grinding wheel components, and the specific implementation is as follows.
[0043] The steel wheel and the edge wheel of the grinding wheel are coaxially placed in the circular-arc type slot 21 on the upper edge of rotating wheel 1, and the edge wheel and the steel wheel of the grinding wheel are assembled by applying axial external force to cylindrical punch 222. When the assembled grinding wheel is transferred from the upper edge to the side edge of rotating wheel 1, it will automatically come out of circular-arc type slot 21.
[0044] Obviously, the continuous assembly of the grinding wheel can be realized by the circulating rotation of the rotating wheel 1, so the utility model does not need to repeatedly put in the jig for assembling the lighter wheel and does not need to match the jig recovery mechanism.
[0045] In the above embodiment, the lighter wheel assembly and discharging mechanism of the utility model improves the working mode of one-time discharging and assembling of the steel wheel and the edge wheel of the grinding wheel in the prior art to discharging and distributing the edge wheel at one end of the steel wheel of the lighter wheel through the discharging module, and then discharging and distributing the edge wheel at the other end of the steel wheel through the discharging module after completing the single-side assembly.
[0046] The specific working steps are as follows:
[0047] (1) Put the steel wheel 1' into the second discharging port 33, and drive the rotating wheel 1 to rotate clockwise, since the second discharging port 33 is just located on the rotation track of the second guide groove 24, the steel wheel 1' will finally pass through the second guide groove 24 into the circular-arc groove 21, and the circular-arc groove 21 carrying the steel wheel 1' will rotate synchronously to the first discharging port 32 with the rotating wheel 1;
[0048] (2) Put the edge wheel 2' matched with the first end of the steel wheel 1' into the first discharging port 32, since the first discharging port 32 is just located on the rotation track of the first guide groove 23, the edge wheel 2' matched with the first end of the steel wheel 1' will finally pass through the second guide groove 24 into the circular-arc groove 21, and is matched with the first end of the steel wheel 1';
[0049] (3) The stamping mechanism is used to axially stamp the steel wheel 1' in the circular-arc groove 21 and the edge wheel 2' matched with the first end of the steel wheel 1' through the stamping port 22, and the installation of the edge wheel is completed at the first end of the steel wheel 1', and the grinding wheel semi-finished product is obtained;
[0050] (4) Put the edge wheel 3' matched with the second end of the steel wheel 1' into the third discharging port 34, since the third discharging port 34 is just located on the rotation track of the third guide groove 25, the edge wheel 3' matched with the second end of the steel wheel 1' will finally pass through the third guide groove 25 into the circular-arc groove 21, and is matched with the second end of the steel wheel 1';
[0051] (5) The stamping mechanism is used to axially stamp the steel wheel 1' in the circular-arc groove 21 and the edge wheel 3' matched with the second end of the steel wheel 1' through the stamping port 22, and the installation of the edge wheel is completed at the second end of the steel wheel 1', and the grinding wheel finished product is obtained.
[0052] In order to match the action of the stamping mechanism, the rotating wheel 1 can pause rotation during the action of the stamping mechanism.
[0053] Since the discharging module 3 is located on the upper edge of the rotating wheel 1, and the bottom end of the discharging module 3 forms a circular arc limiting section 31 matched with the bottom surface of the annular groove 2, the edge wheels and steel wheels discharged through the first, second and third discharging ports 32, 33 and 34 will not be discharged out of the circular arc groove 21. Until the circular arc groove 21 on the rotating wheel 1 rotates to the position where the circular arc limiting section 31 of the discharging module 3 is discharged, the finished abrasive wheels in the circular arc groove 21 will be discharged out of the circular arc groove 21.
[0054] More specifically, in order to ensure that the edge wheels and steel wheels discharged through the first, second and third discharging ports 32, 33 and 34 will not be discharged out of the circular arc groove 21, the surface of the circular arc limiting section 31 can form guide rails corresponding to the edge wheels and steel wheels, respectively, and the edge wheels and steel wheels will always roll between the guide rails and the circular arc groove 21.
[0055] As can be seen from the above embodiments, the lighter assembly and discharging mechanism for the lighter abrasive wheel discharges and assembles the edge wheels on both ends of the steel wheel twice, and the collision point appearing during each assembly of the edge wheels is halved. The external force originally applied in the axial direction has a lower probability of deviating from the axial direction during transmission, and the coaxiality of the edge wheels and the steel wheel after assembly is significantly improved, and the defective rate is lower.
[0056] In another preferred embodiment, the rotating wheel 1 is provided with a support 4 on each side, and the side of the support 4 facing each other is provided with a pair of passive wheels 41 symmetrically arranged on the upper edge; the axial direction of the passive wheel 41 is vertical, and the wheel edge of the passive wheel 41 interferes with the outer end of the T-shaped head 223; when the cylindrical punch 222 passes through the passive wheel 41 during the rotation of the rotating wheel 1, the outer end of the T-shaped head 223 is frictionally matched with the wheel edge of the passive wheel 41, so that the cylindrical punch 222 is subjected to an axial impact force through the T-shaped head 223. Obviously, without additional stamping mechanism, the cylindrical punch 222 can obtain a stamping stroke through the interference of the passive wheel 41 during the rotation of the rotating wheel 1. Optionally, the passive wheel 41 can be rotatable or non-rotatable.
[0057] Further, the outer end of the T-shaped head 223 is rounded, so that the contact process between the outer end of the T-shaped head 223 and the wheel edge of the passive wheel 41 is smooth, and the cylindrical punch 222 obtains a smooth stamping stroke.
[0058] Further, the passive wheel 41 is made of rubber material, which can ensure that the outer end of the T-shaped head 223 is frictionally matched with the wheel edge of the passive wheel 41, and on the other hand, the outer end of the T-shaped head 223 and the wheel edge of the passive wheel 41 avoid rigid contact, forming a structural protection.
[0059] In another preferred embodiment, the limiting device 225 comprises a threaded hole 226 formed on the edge of the punching port 22, and a bolt 227 fitted into the threaded hole 226; the outer end of the T-shaped head 223 of the columnar punch 222 is formed with a limiting groove 220 on the edge, and the edge of the nut of the bolt 227 is located in the limiting groove 220.
[0060] In a preferred embodiment, the rotation of the rotating wheel 1 in the clockwise direction makes the arc of the movement of one circular-arc groove 21 from the second distribution port 33 to the first distribution port 32 smaller than the arc interval between two adjacent circular-arc grooves 21, so that the feeding time of the steel wheel and the side wheel fitted to the first end of the steel wheel is more compact, and the production efficiency is improved to a certain extent.
[0061] In another preferred embodiment, the rotation of the rotating wheel 1 in the clockwise direction makes the arc of the movement of one circular-arc groove 21 from the first distribution port 32 to the third distribution port 34 larger than the arc interval between two adjacent circular-arc grooves 21, so that sufficient time and space are allocated for the punching assembly of the steel wheel and the side wheel fitted to the first end of the steel wheel.
[0062] In another preferred embodiment, on the side of the circular-arc limiting section 31 in the clockwise direction of the rotating wheel 1, the bottom end of the feeding module 3 is further formed with a tangential separation section 30 tangent to the circular-arc limiting section 31. Obviously, the tangential separation section 30 is in a gradual opening cooperation with the bottom surface of the annular groove 2, so that the abrasive wheel product in the circular-arc groove 21 will gradually become in a free state without position limitation, and finally separated from the circular-arc groove 21 with the rotation of the rotating wheel 1.
[0063] In another preferred embodiment, the rotating wheel 1 comprises a pair of coaxially arranged rotating discs 11, and a coaxial middle disc 12 clamped between the rotating discs 11, the diameter of the middle disc 12 is smaller than that of the rotating discs 11, the bottom surface of the annular groove 2 is formed by the outer circular surface of the middle disc 12, and the side wall of the annular groove 2 is formed by the wheel rim of the rotating discs 11. The positive significance of this arrangement is that the design and manufacturing difficulties of the rotating wheel 1 are reduced.
[0064] In another preferred embodiment, the arc surface of the circular-arc groove 21 has a coaxial circular-arc convex rib 20 in the middle part, and the circular-arc convex rib 20 is just located in the tail end opening range of the second guide groove 24. Generally, the steel wheel of the abrasive wheel is designed to have a smaller diameter than the side wheel, and the height of the circular-arc convex rib 20 is designed to be the difference between the radii of the steel wheel and the side wheel, so that the steel wheel entering the circular-arc groove 21 is coaxially aligned with the side wheel under the support of the circular-arc convex rib 20, which helps to ensure the coaxiality of the assembled steel wheel and side wheel.
[0065] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A lighter wheel assembly mechanism, characterized in that: comprising an axial horizontal rotating wheel, an annular groove is formed on the outer surface of the rotating wheel, the bottom surface of the annular groove has a plurality of circular arc grooves distributed equidistantly around the rotating wheel, the axial direction of the circular arc groove is parallel to the rotating wheel; the side wall on both sides of the annular groove is provided with a stamping port corresponding to the circular arc groove, and the end of the stamping port towards the circular arc groove has a guide hole formed by reducing the caliber; a cylindrical punch is inserted in the stamping port, the end of the cylindrical punch away from the circular arc groove is provided with a T-shaped head slidingly fitted in the stamping port, and the end of the cylindrical punch towards the circular arc groove is slidably inserted in the guide hole, a spring is sleeved on the cylindrical punch, and the two ends of the spring are respectively abutted against the T-shaped head and the hole along of the guide hole; the end of the T-shaped head extends to the outside of the stamping port, and the two ends of the rotating wheel are respectively provided with a limiting device matched with the T-shaped head to prevent the cylindrical punch from coming out of the stamping port; on the side of each circular arc groove in the clockwise direction of the rotating wheel, a first guide groove, a second guide groove and a third guide groove are arranged in sequence along the width direction of the annular groove, the leading end of the first guide groove, the second guide groove and the third guide groove gradually rises to transition to the bottom surface of the annular groove, and the trailing end gradually sinks to cut into the circular arc groove. Further comprising a blanking module located on the upper edge of the rotating wheel, the bottom end of the blanking module is slidingly fitted in the annular groove, and the bottom end of the blanking module forms a circular arc limiting section matched with the bottom surface of the annular groove, and the bottom surface of the circular arc limiting section is further provided with a first material distribution port, a second material distribution port and a third material distribution port penetrating through the blanking module upward; when the rotating wheel rotates, the first material distribution port is located on the rotation track of the first guide groove, the second material distribution port is located on the rotation track of the second guide groove, and the third material distribution port is located on the rotation track of the third guide groove; the second material distribution port is located on the counterclockwise side of the rotating wheel relative to the first material distribution port, and the third material distribution port is located on the clockwise side of the rotating wheel relative to the first material distribution port. The two sides of the rotating wheel are respectively provided with a support, and the side of the support facing each other is provided with a pair of passive wheels on the upper edge; the axial direction of the passive wheel is vertical, and the wheel edge of the passive wheel is interference-fitted with the outer end of the T-shaped head; when the cylindrical punch passes through the passive wheel under the rotation of the rotating wheel, the outer end of the T-shaped head is frictionally fitted with the wheel edge of the passive wheel, so that the cylindrical punch is subjected to axial impact force through the T-shaped head.
2. The lighter wheel assembly mechanism of claim 1, wherein: The outer end of the T-shaped head is rounded.
3. The lighter wheel assembly mechanism of claim 2, wherein: The passive wheel is made of rubber material.
4. The lighter wheel assembly mechanism of claim 3, wherein: The limiting device comprises a screw hole formed in the edge of the stamping port and a bolt assembled in the screw hole; the outer end of the T-shaped head of the cylindrical punch is provided with a limiting groove on the edge, and the edge of the nut of the bolt is located in the limiting groove.
5. The lighter wheel assembly mechanism of claim 1, wherein: The arc of the rotating wheel rotating clockwise to move a circular arc groove from the second material distribution port to the first material distribution port is smaller than the arc interval between two adjacent circular arc grooves.
6. The lighter wheel assembly mechanism of claim 1, wherein: The arc of the rotating wheel rotating clockwise to move a circular arc groove from the first material distribution port to the third material distribution port is larger than the arc interval between two adjacent circular arc grooves.
7. The lighter wheel assembly mechanism of claim 1, wherein: On the side of the circular arc limiting section located in the clockwise direction of the rotating wheel, the bottom end of the blanking module further forms a tangential separation section tangent to the circular arc limiting section.
8. The lighter wheel assembly mechanism of claim 1, wherein: 9. The lighter wheel assembly mechanism of claim 1, wherein: The rotating wheel comprises a pair of coaxial rotating discs and a coaxial middle disc clamped between the rotating discs, the diameter of the middle disc is smaller than that of the rotating discs, the bottom of the annular groove is formed by the outer surface of the middle disc, and the sidewall of the annular groove is formed by the wheel rim of the rotating disc.
10. The lighter wheel assembly mechanism of claim 1, wherein: The arc surface of the circular-arc groove has a coaxial circular-arc protruding rib in the middle, and the circular-arc protruding rib is just in the middle of the tail end opening range of the second guide groove.