Semi-automatic emery spreader and method

Abstract

The invention relates to the technical field of emery scattering, in particular to a semi-automatic emery scattering machine and method.The semi-automatic emery scattering machine comprises a cache box, the bottom surface of the cache box is fixedly connected with a mounting disc, and the inner side surface of the cache box is provided with a discharging groove for triggering discharging when moving to the surface of a magnetic core; material scattering rods which evenly scatter materials through rotation and increase the range are arranged on the surface of the bottom of the discharging groove, a pushing overturning arm which is triggered to wrap a magnetic core so as to limit the material scattering range is arranged on the surface of the inner side of the installation disc, and a downward pressing pushing arm which converts ascending into downward and inward driving is arranged on the surface of the outer side of the pushing overturning arm. The bottom surface of the mounting disc is provided with a bottom shell which forms a frame and gathers inwards to control the material scattering range and prevent splashing, automatic triggering and area self-adaptive wrapping of the device above the magnetic cores are achieved, the device can be matched with the magnetic cores of different sizes without manual adjustment, it is ensured that the material scattering range is always aligned with the outlines of the magnetic cores, and the material scattering efficiency is improved. The emery is prevented from being splashed down to a non-working area.

Description

Technical Field

[0001] This invention relates to the field of corundum sand spreading technology, specifically a semi-automatic corundum sand spreading machine and method. Background Technology

[0002] In the magnetic core manufacturing process, corundum sand application is a crucial step that connects the preceding and following steps: due to its high hardness and sharp edges, corundum sand can quickly polish the outer periphery of the magnetic core in the subsequent grinding stage, so that its dimensional accuracy and surface roughness meet the stringent requirements of electronic components. In traditional operations, corundum sand is usually stored in a large silo and transported through pipelines to a fixed nozzle or rotating disc, and then the sand particles are thrown onto the surface of the magnetic core by gravity or centrifugal force. In order to accommodate different specifications of products, the production line is often equipped with multiple sets of nozzles, adjustable baffles or changed tooling, and relies on manual inspection to replenish the sand and recover the overflow, thereby maintaining continuous production and a clean work site.

[0003] Existing equipment mostly uses fixed-diameter feeding ports, which makes it difficult to dynamically adjust the feeding area according to changes in the size of the magnetic core. This often results in missed feeding at the edges or excessive overflow, requiring manual re-feeding or cleaning, which reduces the cycle time. Conventional machines rely on horizontal conveyor belts or rotary discs for material distribution, with a single direction of movement, making it difficult to form a uniform coverage on the sides and corners of the magnetic core, resulting in large local thickness differences and affecting the consistency of subsequent grinding.

[0004] In view of this, we propose a semi-automatic corundum sand spreading machine and method. Summary of the Invention

[0005] The purpose of this invention is to provide a semi-automatic corundum sand spreading machine and method to solve the problems of corundum sand spreading machines mentioned in the background art, which have difficulty in dynamically adjusting the spreading area according to changes in magnetic core size, often resulting in edge leakage or excessive overflow. To achieve the above objective, this invention provides the following technical solution: a semi-automatic corundum sand spreading machine, including a buffer box, a box top cover fixedly connected to the top surface of the buffer box, a mounting plate fixedly connected to the bottom surface of the buffer box, a discharge trough provided on the inner surface of the buffer box, a spreading rod provided on the bottom surface of the discharge trough, a pushing and turning arm provided on the inner surface of the mounting plate, a pressing and pushing arm provided on the outer surface of the pushing and turning arm, and a bottom shell provided on the bottom surface of the mounting plate.

[0006] Preferably, the discharge trough includes an inner and outer shell, the inner and outer shell being fixedly connected to the inner surface of the buffer box, a lifting slide groove being formed on the outer surface of the inner and outer shell, an inner mounting cylinder being fixedly connected to the inner surface of the inner and outer shell, a lifting column being slidably connected to the inner surface of the inner mounting cylinder, a top opening and closing valve being fixedly connected to the top surface of the lifting column, a lifting slider being fixedly connected to the outer surface of the lifting column, a baffle plate being fixedly connected to the outer surface of the lifting slider, a bottom mounting column being fixedly connected to the bottom surface of the lifting column, a contact ball being slidably connected to the inner surface of the bottom mounting column, and a bottom opening and closing valve being fixedly connected to the outer surface of the lifting column.

[0007] Preferably, both the top and bottom opening / closing valves are slidably connected to the inner surface of the inner mounting cylinder, and the number of the baffles is four and they are arranged in a ring. The baffles are slidably connected to the inner surface of the lifting slide.

[0008] Preferably, the material spreading rod includes a rotating sleeve, which is rotatably connected to the bottom surface of the inner mounting cylinder. A driven gear groove is provided on the outer surface of the rotating sleeve, and a driving gear is slidably connected to the outer surface of the rotating sleeve. A drive motor is fixedly connected to the top surface of the driving gear. A fixed material rod is fixedly connected to the outer surface of the rotating sleeve, and a movable material rod is sleeved on the outer surface of the fixed material rod. Fixed hinge arms are hinged to both sides of the fixed material rod, and a return spring is sleeved on the outer surface of the fixed hinge arms. Movable hinge arms are hinged to both ends of the movable material rod, and a limit pin is fixedly connected to one end of the movable material rod.

[0009] Preferably, the driving gear meshes with the driven gear, the drive motor is fixedly connected to the inner surface of the inner mounting cylinder, the number of fixed material rods is four and they are distributed in a ring, the bottom surfaces of the fixed material rods and the movable material rods are provided with material spreading grooves, the fixed hinge arm and the movable hinge arm are hingedly connected, and the two ends of the return spring are fixedly connected to the fixed hinge arm and the movable hinge arm respectively.

[0010] Preferably, the push-flipping arm includes a mounting hinge arm, which is hinged to the inner surface of the mounting plate. One end of the mounting hinge arm is hinged to a pressure-bearing hinge arm, and one end of the pressure-bearing hinge arm is hinged to a push-flipping hinge arm. A buffer post is fixedly connected to the outer surface of the push-flipping hinge arm, a buffer spring is sleeved on the outer surface of the buffer post, and a push-flipping sleeve is slidably connected to the outer surface of the buffer post.

[0011] Preferably, the number of the pushing and flipping arms is four and they are arranged in a ring, and the mounting hinge arm and the pressure-bearing hinge arm protrude downward after bending;

[0012] The pressure-bearing hinged arm is in contact with the lifting slider.

[0013] Preferably, the downward push arm includes a mounting housing, which is fixedly connected to the outer surface of the buffer box. A sliding groove is provided on the outer surface of the mounting housing. An L-shaped block is rotatably connected to the inner surface of the mounting housing. A driven push-pull rod is fixedly connected to the outer surface of the L-shaped block. A trigger arm is fixedly connected to the outer surface of the L-shaped block. A connecting bracket is slidably connected to the inner surface of the trigger arm.

[0014] Preferably, the number of the downward push arms is four and they are arranged in a ring, the number of the L-shaped blocks on each mounting housing is two and they are symmetrically distributed, both ends of the driven push rod are fixedly connected to the L-shaped blocks on both sides, and the driven push rod is slidably connected to the inner surface of the sliding groove.

[0015] The driven push-pull rod is slidably connected to the inner surface of the push sleeve.

[0016] Preferably, the bottom shell includes an inclined sliding groove, which is fixedly connected to the bottom surface of the mounting plate. A connecting column is slidably connected to the inner surface of the inclined sliding groove. An upper frame is fixedly connected to the bottom surface of the connecting column. A limiting sliding groove is formed on the inner surface of the upper frame. An upper connecting slot is formed on the outer surface of the upper frame. A lower frame is slidably connected to the bottom surface of the connecting column. A lower connecting slot is formed on the outer surface of the lower frame. A clamping soft rubber is fixedly connected to the bottom surface of the lower frame.

[0017] Preferably, there are four inclined slides, four connecting columns, four upper frames and four four lower frames. The upper frames are connected to each other through upper connecting slots and the lower frames are connected to each other through lower connecting slots.

[0018] The limiting groove is slidably connected to the limiting pin, and the lower frame is fixedly connected to the connecting bracket.

[0019] A semi-automatic corundum sand spreading machine and method, comprising the following steps:

[0020] S1. The buffer box stores corundum sand. The top cover of the box is used for feeding. The mounting plate is the feeding area. The top and bottom valves of the discharge chute are initially closed to prevent corundum sand from falling. The movable part of the feeding rod is fitted onto the fixed rod to adapt to the size of the magnetic core. The upper and lower frames of the bottom shell are initially in a high position and do not cover the magnetic core. The push-flip arm and the push-down arm are initially in the unfolded state and have not been triggered.

[0021] S2. The device moves above the magnetic core, the contact ball contacts the surface of the magnetic core and is lifted, driving the lifting column to rise. The top opening and closing valve and the bottom opening and closing valve rise with the lifting column, opening the discharge channel. The corundum sand falls from the buffer box through the gap between the inner and outer shell and the top opening and closing valve into the rotating sleeve. Some of the corundum sand is directly sprinkled onto the surface of the magnetic core through the gap between the rotating sleeve and the bottom opening and closing valve. The lifting slider rises and triggers the downward pushing arm. The baffle plate blocks the lifting slide to prevent the corundum sand from leaking.

[0022] S3. The drive motor starts and drives the rotating sleeve to rotate back and forth through the drive gear and driven gear slot. The corundum sand is thrown into the fixed material rod and the movable material rod, and is evenly spread out through the spreading groove. The rotation expands the spreading range. The movable material rod extends and retracts adaptively according to the size of the magnetic core. The limit pin slides along the limit slide groove.

[0023] S4. The lifting column rises and pushes the tilting arm, which pushes the driven push rod of the lower push arm outward and downward. The L-shaped block rotates, which drives the trigger arm and connecting bracket to move downward and inward. This drives the lower frame to converge obliquely along the inclined slide, the upper frame to move horizontally, and the lower frame to move up and down and horizontally simultaneously. Finally, the magnetic core is wrapped, limiting the material spreading range and preventing splashing.

[0024] S5. After the material is spread, the device moves out of the magnetic core, the contact ball loses its support, the lifting column descends, the top and bottom opening and closing valves close, the material is stopped, the pushing tilting arm and the downward pushing arm are reset under the action of gravity and the return spring, and the bottom shell unfolds back to the initial high position.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] In this invention, the uniform spreading of corundum sand is achieved through the coordinated operation of the buffer box, the discharge chute and the spreading rod, avoiding the uneven thickness and waste of raw materials caused by traditional manual spreading, and improving the quality consistency of the coating on the magnetic core surface.

[0027] In this invention, the automatic triggering and adaptive area wrapping of the device above the magnetic core are achieved through the mechanical cooperation of the contact ball, the lifting column and the bottom shell. Different sizes of magnetic cores can be matched without manual adjustment, ensuring that the material spreading range is always aligned with the outline of the magnetic core and preventing corundum sand from splashing into non-working areas.

[0028] In this invention, the transmission cooperation between the pushing and flipping arm, the pressing and pushing arm and the inclined slide groove realizes the efficient conversion of vertical lifting motion to inclined gathering motion, so that the bottom shell can complete the composite motion of "downward covering and inward gathering" under a single trigger, which simplifies the structural complexity and improves the reliability and response speed of the device operation. Attached Figure Description

[0029] Figure 1 This is a side view of the overall structure of the present invention;

[0030] Figure 2 This is a side view of the bottom structure of the present invention;

[0031] Figure 3 This is a side view of the internal structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the interaction between the discharge trough and the spreading rod of the present invention;

[0033] Figure 5 This is an exploded flowchart of the lifting column, lifting slider, and lifting chute of the present invention.

[0034] Figure 6 This is a schematic diagram of the interlocking structure of the various components of the discharge trough of the present invention;

[0035] Figure 7 This is a schematic diagram of the interlocking structure of the various components of the material spreading rod of the present invention;

[0036] Figure 8 This is a schematic diagram of the interaction between the bottom opening / closing valve and the rotating sleeve of the present invention;

[0037] Figure 9 This is a schematic diagram of the interaction structure of the inner mounting cylinder, lifting column, lifting slider, and baffle plate of the present invention.

[0038] Figure 10 This is a schematic diagram of the cooperation structure between the mounting plate and the push-turning arm of the present invention;

[0039] Figure 11 This is a schematic diagram of the structure in which the mounting plate, lifting slider, and pressure-bearing hinged arm of the present invention cooperate with each other.

[0040] Figure 12 This is a schematic diagram of the interoperability of the various components of the push-tilt arm of the present invention;

[0041] Figure 13 This is a schematic diagram of the interoperability of the components of the downward push arm of the present invention;

[0042] Figure 14 This is an exploded flowchart of the lifting slider and the pressure-bearing hinged arm of the present invention;

[0043] Figure 15 This is a schematic diagram of the cooperative structure of the pressure-bearing hinge arm, the pushing hinge arm, and the pushing slide sleeve of the present invention;

[0044] Figure 16 This is a schematic diagram of the cooperative structure of the fixed material rod, the movable material rod, the fixed hinge arm, and the movable hinge arm of the present invention.

[0045] Figure 17This is a schematic diagram of the structure in which the fixed hinge arm, the movable hinge arm, and the return spring cooperate with each other according to the present invention.

[0046] Figure 18 This is an exploded flowchart illustrating the fixed hinge arm, movable hinge arm, and return spring of the present invention.

[0047] Figure 19 This is a schematic diagram of the interlocking structure of the various components of the bottom shell of the present invention;

[0048] Figure 20 This is a schematic diagram of the structure in which the upper frame, upper connecting slot, lower frame, and lower connecting slot of the present invention cooperate with each other.

[0049] Figure 21 This is a top view of the bottom shell of the present invention;

[0050] Figure 22 This is a schematic diagram of the interaction structure of the trigger arm, connecting bracket, and lower frame of the present invention.

[0051] Figure 23 This is a schematic diagram of the interaction structure between the trigger arm and the connecting bracket of the present invention;

[0052] Figure 24 This is a schematic diagram of the interlocking structure of the connecting bracket, lower frame, and upper frame of the present invention.

[0053] Figure 25 This is an exploded flowchart of the connecting bracket and lower frame of the present invention;

[0054] Figure 26 This is a schematic diagram of the aggregated structure of the present invention.

[0055] In the diagram: 1. Buffer box; 11. Box top cover; 12. Mounting plate; 2. Discharge chute; 21. Inner and outer shells; 211. Lifting slide rail; 22. Inner mounting cylinder; 23. Lifting column; 231. Top opening and closing valve; 232. Lifting slider; 2321. Baffle plate; 24. Bottom mounting column; 241. Contact ball; 242. Bottom opening and closing valve; 3. Dispensing rod; 31. Rotating sleeve; 311. Driven gear groove; 312. Drive gear; 313. Drive motor; 32. Fixed material rod; 321. Movable material rod; 322. Dispensing chute; 33. Fixed hinge arm; 331. Return spring; 332. Movable... 34. Moving hinge arm; 4. Limiting pin; 4. Pushing and flipping arm; 41. Installing hinge arm; 411. Pressurized hinge arm; 412. Pushing hinge arm; 42. Buffer pin; 421. Buffer spring; 43. Pushing sleeve; 5. Pressing down pushing arm; 51. Installing housing; 511. Sliding groove; 52. L-shaped block; 521. Driven push-pull rod; 53. Trigger arm; 531. Connecting bracket; 6. Bottom housing; 61. Angled sliding groove; 62. Connecting column; 63. Upper frame; 631. Limiting sliding groove; 632. Upper connecting slot; 64. Lower frame; 641. Lower connecting slot; 642. Clamping soft rubber. Detailed Implementation

[0056] 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.

[0057] Please see Figures 1 to 26 The present invention provides a technical solution: a semi-automatic corundum sand spreading machine, including a buffer box 1, a box top cover 11 fixedly connected to the top surface of the buffer box 1, an installation plate 12 fixedly connected to the bottom surface of the buffer box 1, a discharge chute 2 provided on the inner surface of the buffer box 1, a spreading rod 3 provided on the bottom surface of the discharge chute 2, a pushing and turning arm 4 provided on the inner surface of the installation plate 12, a pressing and pushing arm 5 provided on the outer surface of the pushing and turning arm 4, and a bottom shell 6 provided on the bottom surface of the installation plate 12;

[0058] The buffer box 1 is used to store buffer corundum sand. The top cover 11 of the box has a slot for inputting corundum sand. The mounting plate 12 is the bottom spreading area. The whole device is used for spreading material and is connected to the spreading machine for movement and lifting.

[0059] The discharge chute 2 includes an inner and outer shell 21, which is fixedly connected to the inner surface of the buffer box 1. A lifting slide 211 is provided on the outer surface of the inner and outer shell 21. An inner mounting cylinder 22 is fixedly connected to the inner surface of the inner and outer shell 21. A lifting column 23 is slidably connected to the inner surface of the inner mounting cylinder 22. A top opening and closing valve 231 is fixedly connected to the top surface of the lifting column 23. A lifting slider 232 is fixedly connected to the outer surface of the lifting slider 232. A baffle plate 2321 is fixedly connected to the outer surface of the lifting column 23. A bottom mounting column 24 is fixedly connected to the bottom surface of the lifting column 23. A contact ball 241 is slidably connected to the inner surface of the bottom mounting column 24. A bottom opening and closing valve 242 is fixedly connected to the outer surface of the lifting column 23.

[0060] Both the top opening and closing valve 231 and the bottom opening and closing valve 242 are slidably connected to the inner surface of the inner mounting cylinder 22. There are four baffles 2321 distributed in a ring. The baffles 2321 are slidably connected to the inner surface of the lifting slide 211.

[0061] By setting the discharge chute 2, the material is triggered when the device is above the magnetic core. During use, as the entire device moves, the contact ball 241 will move to the surface of the magnetic core. Since the bottom is spherical, it will be lifted by the magnetic core, causing the lifting column 23 to rise. In the initial state, the top opening and closing valve 231 and the bottom opening and closing valve 242 respectively block the openings of the inner and outer shell 21 and the rotating sleeve 31. After the top opening and closing valve 231 and the bottom opening and closing valve 242 are raised, the corundum sand inside the buffer box 1 will fall into the rotating sleeve 31 through the gap between the inner and outer shell 21 and the top opening and closing valve 231. Some of the corundum sand will fall directly into the surface of the magnetic core from the gap between the rotating sleeve 31 and the bottom opening and closing valve 242 for material spreading.

[0062] After the lifting column 23 is raised, it will drive the lifting slider 232 to rise, thereby triggering the downward push arm 5. Since the baffle plate 2321 on the surface of the lifting slider 232 will block the lifting slide 211, even after lifting, the corundum sand will not spill out from the inside.

[0063] The material spreading rod 3 includes a rotating sleeve 31, which is rotatably connected to the bottom surface of the inner mounting cylinder 22. A driven gear groove 311 is provided on the outer surface of the rotating sleeve 31. A driving gear 312 is slidably connected to the outer surface of the rotating sleeve 31. A drive motor 313 is fixedly connected to the top surface of the driving gear 312. A fixed material rod 32 is fixedly connected to the outer surface of the rotating sleeve 31. A movable material rod 321 is sleeved on the outer surface of the fixed material rod 32. Fixed hinge arms 33 are hinged to both sides of the fixed material rod 32. A return spring 331 is sleeved on the outer surface of the fixed hinge arms 33. Movable hinge arms 332 are hinged to both ends of the movable material rod 321. A limit pin 34 is fixedly connected to one end of the movable material rod 321.

[0064] The driving gear 312 meshes with the driven gear groove 311, the drive motor 313 is fixedly connected to the inner surface of the inner mounting cylinder 22, the number of fixed material rods 32 is four and they are distributed in a ring, the bottom surfaces of the fixed material rods 32 and the movable material rods 321 are provided with a material spreading groove 322, the fixed hinge arm 33 is hinged to the movable hinge arm 332, and the two ends of the return spring 331 are fixedly connected to the fixed hinge arm 33 and the movable hinge arm 332 respectively.

[0065] By setting the spreading rod 3, the spreading range is expanded by rotating. During use, the corundum sand inside the buffer box 1 will fall into the rotating sleeve 31 through the gap between the inner and outer shell 21 and the top opening and closing valve 231. The drive motor 313 reciprocates and meshes with the driven gear groove 311 through the active gear 312, causing the rotating sleeve 31 to rotate and throw the corundum sand inside into the fixed material rod 32 and the movable material rod 321, and then sprinkle it onto the surface of the magnetic core through the spreading groove 322 at the bottom. Since the fixed material rod 32 and the movable material rod 321 will rotate with the rotating sleeve 31, the spreading range is expanded.

[0066] The bottom outer shell 6 will clamp according to the size of the magnetic core, so that the area to be sprinkled matches the size of the magnetic core. The movable material rod 321 cannot be fully unfolded and part of it will be sleeved on the fixed material rod 32. It can adapt to different magnetic core sizes by sliding. The limiting pin 34 will be locked in the limiting groove 631. When the rotating sleeve 31 drives the fixed material rod 32 and the movable material rod 321 to rotate, since the area enclosed by the bottom outer shell 6 is rectangular, the limiting pin 34 will press the movable material rod 321 in, thereby adapting to the different distances from the edge of the magnetic core of different sizes to the rotation center of the rotating sleeve 31.

[0067] When the fixed material rod 32 and the movable material rod 321 approach each other, the distance between the fixed hinge arm 33 and the movable hinge arm 332 decreases, causing rotation at the connection point and twisting the return spring 331. Thus, when the movable material rod 321 can extend, the return spring 331 resets the fixed hinge arm 33 and the movable hinge arm 332, thereby pushing the movable material rod 321 outward again.

[0068] The push-tilt arm 4 includes a mounting hinge arm 41, which is hinged to the inner surface of the mounting plate 12. One end of the mounting hinge arm 41 is hinged to a pressure hinge arm 411, and one end of the pressure hinge arm 411 is hinged to a push hinge arm 412. A buffer post 42 is fixedly connected to the outer surface of the push hinge arm 412. A buffer spring 421 is sleeved on the outer surface of the buffer post 42, and a push sleeve 43 is slidably connected to the outer surface of the buffer post 42.

[0069] The number of the push-over arms 4 is four and they are arranged in a ring. The mounting hinge arm 41 and the pressure-bearing hinge arm 411 protrude downwards after bending.

[0070] The pressure-bearing hinge arm 411 contacts the lifting slider 232.

[0071] The flip arm 4 is initially in the open state. When it moves to the surface of the magnetic core, it flips and triggers the bottom shell 6. During use, the mounting hinge arm 41 and the pressure hinge arm 411 are hinged and bent downwards. When the lifting column 23 is raised, the lifting slider 232 lifts the rotating connection between the mounting hinge arm 41 and the pressure hinge arm 411, reducing the angle between the mounting hinge arm 41, the pressure hinge arm 411 and the mounting hinge arm 41. This pushes the flip arm 4 to unfold outwards. Since the mounting hinge arm 41 cannot move but can only rotate, it will push the pressure hinge arm 411 and the pushing hinge arm 412 outwards. The pushing sleeve 43 also pushes outwards to push the driven push-pull rod 521. After the lifting column 23 descends, it is affected by gravity, and the pushing sleeve 43 is pulled back. The driven push-pull rod 521 is also pulled back to the initial position.

[0072] Because the size of the magnetic core is not fixed, the bottom shell 6 is difficult to retract completely, which makes the distance pushed out by the push sleeve 43 uncertain. If the bottom shell 6 has moved to the maximum position, but the push hinge arm 412 continues to move outward, the buffer spring 421 will be squeezed instead of the push sleeve 43 to buffer the displacement, so that the lifting column 23 can continue to rise.

[0073] The downward push arm 5 includes a mounting housing 51, which is fixedly connected to the outer surface of the buffer box 1. A sliding groove 511 is provided on the outer surface of the mounting housing 51. An L-shaped block 52 is rotatably connected to the inner surface of the mounting housing 51. A driven push-pull rod 521 is fixedly connected to the outer surface of the L-shaped block 52. A trigger arm 53 is fixedly connected to the outer surface of the L-shaped block 52. A connecting bracket 531 is slidably connected to the inner surface of the trigger arm 53.

[0074] There are four downward push arms 5 arranged in a ring, and two L-shaped blocks 52 are arranged symmetrically on each mounting housing 51. Both ends of the driven push rod 521 are fixedly connected to the L-shaped blocks 52 on both sides, and the driven push rod 521 is slidably connected to the inner surface of the sliding groove 511.

[0075] The driven push-pull rod 521 is slidably connected to the inner surface of the push sleeve 43.

[0076] By setting the push arm 5, the pushing force of the flipping arm 4 is converted into rotation, thereby obtaining an inward and downward pushing force to push the bottom shell 6. During use, the driven push rod 521 can slide along the arc-shaped path inside the sliding groove 511 after being pushed by the sliding sleeve 43. Initially, it is at the top. When it is pushed outward by the sliding sleeve 43, it will also move downward. The driven push rod 521 is connected to the L-shaped block 52 but is not at the center of rotation. The L-shaped block 52 can rotate inside the mounting shell 51. When the driven push rod 521 moves along the arc-shaped path, it is equivalent to turning the L-shaped block 52, causing the L-shaped block 52 to rotate. In this way, the upward pushing force of the lifting column 23 is converted into the rotation of the L-shaped block 52.

[0077] L-shaped block 52 will drive trigger arm 53 to rotate. In the initial state, trigger arm 53 is inclined downward and maintains a 45-degree angle, and is connected to connecting bracket 531. In this way, when trigger arm 53 drives connecting bracket 531 to rotate, the height of connecting bracket 531 will decrease, and it will be closer to the bottom shell 6, so as to convert the upward pushing force of lifting column 23 into downward and inward movement again.

[0078] The trigger arm 53 can slide on the connecting bracket 531. The lower frame 64 connected to the connecting bracket 531 will rise and fall and move on the horizontal plane. The downward and inward movement is caused by the rotation of the trigger arm 53 itself and does not need to be matched. However, each lower frame 64 is connected to two connecting brackets 531 and will be subject to inward pushing forces in two directions. If it provides pushing forces on both sides and the other side provides forward and backward pushing forces, then the forward and backward direction requires the trigger arm 53 to slide on the connecting bracket 531 to adapt to the displacement.

[0079] The bottom outer shell 6 includes an inclined slide groove 61, which is fixedly connected to the bottom surface of the mounting plate 12. A connecting column 62 is slidably connected to the inner surface of the inclined slide groove 61. An upper frame 63 is fixedly connected to the bottom surface of the connecting column 62. A limiting slide groove 631 is formed on the inner surface of the upper frame 63. An upper connecting slot 632 is formed on the outer surface of the upper frame 63. A lower frame 64 is slidably connected to the bottom surface of the connecting column 62. A lower connecting slot 641 is formed on the outer surface of the lower frame 64. A clamping soft rubber 642 is fixedly connected to the bottom surface of the lower frame 64.

[0080] There are four inclined slides 61, four connecting columns 62, four upper frames 63 and four lower frames 64. The upper frames 63 are connected to each other through upper connecting slots 632, and the lower frames 64 are connected to each other through lower connecting slots 641.

[0081] The limiting slide 631 is slidably connected to the limiting pin 34, and the lower frame 64 is fixedly connected to the connecting bracket 531.

[0082] With the bottom shell 6, during use, the connecting column 62 can slide in the inclined slide groove 61 to drive the upper frame 63 and the lower frame 64 to converge inward or expand outward. The upper frame 63 is used to contact the limiting bracket 34 through the limiting slide groove 631 to control the movement path. Therefore, the height is fixed and only the horizontal displacement occurs. The lower frame 64 is affected by the connecting bracket 531 and will simultaneously undergo lifting and horizontal displacement.

[0083] When the trigger arm 53 drives the connecting bracket 531 to rotate downward, the connecting bracket 531 moves downward and inward, causing the lower frame 64 to also move inward and downward. Each lower frame 64 is pushed by the two connecting brackets 531 on the horizontal plane, thus moving obliquely with the inclined slide 61. All four lower frames 64 move inward to gather and wrap the magnetic core to control the material spreading range. The clamping soft rubber 642 is elastic and contacts the magnetic core. The lower frame 64 is initially in a high position, and it will also move downward after the connecting bracket 531 pushes it downward, thus blocking the side of the magnetic core from above and preventing corundum sand from splashing out.

[0084] The upper frame 63 and the lower frame 64 are respectively provided with an upper connecting slot 632 and a lower connecting slot 641. The upper connecting slots 632 are nested with each other to accommodate magnetic cores of different sizes.

[0085] After the material is applied, the entire device is removed from above the magnetic core. The contact ball 241 is no longer lifted. The weight of the magnetic core is much greater than the friction generated by the clamping soft rubber 642, causing it to fall off the magnetic core. The lifting column 23 descends, and the entire device is reset.

[0086] In this embodiment, as Figure 1 , Figure 2 , Figure 3 As shown, each component is installed inside or on the surface of the buffer box 1 and the mounting plate 12;

[0087] In this embodiment, as Figure 4 , Figure 5 , Figure 6 As shown, the contact ball 241 is lifted by the magnetic core, causing the lifting column 23 to rise. After the top opening and closing valve 231 rises, the corundum sand inside the buffer box 1 will fall into the rotating sleeve 31 through the gap between the inner and outer shell 21 and the top opening and closing valve 231.

[0088] In this embodiment, as Figure 7 , Figure 8 , Figure 9 As shown, corundum sand falls from the buffer box 1 through the gap between the inner and outer shell 21 and the top opening and closing valve 231 into the rotating sleeve 31. Some of the corundum sand is directly sprinkled onto the surface of the magnetic core through the gap between the rotating sleeve 31 and the bottom opening and closing valve 242. The baffle plate 2321 blocks the lifting slide 211 to prevent corundum sand leakage.

[0089] In this embodiment, as Figure 10 , Figure 11 As shown, the push-tilt arm 4 and the push-down arm 5 are installed inside the mounting plate 12 and do not contact the corundum sand in the buffer box 1;

[0090] In this embodiment, as Figure 12 , Figure 13 , Figure 14 As shown, the hinged arm of the push-tilting arm 4 unfolds after being pushed by the lifting slider 232;

[0091] In this embodiment, as Figure 15 As shown, the pressure-bearing hinge arm 411 pushes the push hinge arm 412 through the buffer spring 421, which plays a buffering role;

[0092] In this embodiment, as Figure 16 , Figure 17 , Figure 18 As shown, when the fixed material rod 32 and the movable material rod 321 approach each other, the return spring 331 is twisted, the fixed hinge arm 33 and the movable hinge arm 332 are reset, thereby pushing the movable material rod 321 outward again.

[0093] In this embodiment, as Figure 19 , Figure 20 , Figure 21 As shown, the bottom shell 6 forms a rectangular frame and can be brought together inward;

[0094] In this embodiment, as Figure 22 , Figure 23 , Figure 24 , Figure 25 As shown, when the trigger arm 53 drives the connecting bracket 531 to rotate, the height of the connecting bracket 531 will decrease and it will be closer to the bottom shell 6, so as to convert the upward pushing force of the lifting column 23 into downward and inward movement again. The trigger arm 53 slides on the connecting bracket 531 to adapt to the displacement from the other side.

[0095] In this embodiment, as Figure 26 As shown, the bottom outer shell 6 is brought together.

[0096] The invention relates to a semi-automatic corundum sand spreading machine and its advantages. The working process is as follows:

[0097] like Figures 1 to 26As shown, during use, the buffer box 1 stores corundum sand, the top cover 11 is used for feeding, the mounting plate 12 is the feeding area, the top opening and closing valve 231 and the bottom opening and closing valve 242 of the discharge chute 2 are initially closed to prevent the corundum sand from falling, the movable material rod 321 of the feeding rod 3 is sleeved on the fixed material rod 32 to adapt to the size of the magnetic core, the upper frame 63 and the lower frame 64 of the bottom shell 6 are initially in a high position and do not cover the magnetic core, the push flipping arm 4 and the push pushing arm 5 are initially in the unfolded state and have not triggered any action;

[0098] The device moves above the magnetic core, the contact ball 241 contacts the surface of the magnetic core and is lifted, driving the lifting column 23 to rise. The top opening and closing valve 231 and the bottom opening and closing valve 242 rise with the lifting column 23, opening the discharge channel. The corundum sand falls from the buffer box 1 through the gap between the inner and outer shell 21 and the top opening and closing valve 231 into the rotating sleeve 31. Some of the corundum sand is directly sprinkled onto the surface of the magnetic core through the gap between the rotating sleeve 31 and the bottom opening and closing valve 242. The lifting slider 232 rises and triggers the downward push arm 5. The baffle plate 2321 blocks the inside of the lifting chute 211 to prevent the corundum sand from leaking.

[0099] When the drive motor 313 starts, it drives the rotating sleeve 31 to reciprocate through the drive gear 312 and the driven gear groove 311. The corundum sand is thrown into the fixed material rod 32 and the movable material rod 321, and is evenly sprinkled out through the spreading groove 322. The rotation expands the spreading range. The movable material rod 321 extends and retracts adaptively according to the size of the magnetic core. The limit pin 34 slides along the limit slide groove 631.

[0100] The lifting column 23 rises and pushes the tilting arm 4, which pushes the driven push rod 521 of the downward pushing arm 5 outward and downward. The L-shaped block 52 rotates, causing the trigger arm 53 and the connecting bracket 531 to move downward and inward. This drives the lower frame 64 to converge obliquely along the inclined slide 61. The upper frame 63 moves horizontally, and the lower frame 64 moves up, down and horizontally synchronously, finally wrapping the magnetic core, limiting the material spreading range and preventing splashing.

[0101] After the material is dispensed, the device moves out of the magnetic core, the contact ball 241 loses its support, the lifting column 23 descends, the top opening and closing valve 231 and the bottom opening and closing valve 242 close, the material is stopped, the pushing tilting arm 4 and the downward pushing arm 5 are reset under the action of gravity and the return spring 331, and the bottom outer shell 6 unfolds back to the initial high position.

[0102] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A semi-automatic corundum sand spreading machine, comprising a buffer box (1), wherein a box top cover (11) is fixedly connected to the top surface of the buffer box (1), and an mounting plate (12) is fixedly connected to the bottom surface of the buffer box (1), characterized in that: The inner surface of the buffer box (1) is provided with a discharge trough (2) that triggers discharge when it moves to the surface of the magnetic core. The bottom surface of the discharge trough (2) is provided with a discharge rod (3) that spreads material evenly and increases the range by rotating. The inner surface of the mounting plate (12) is provided with a push-turning arm (4) that triggers the wrapping of the magnetic core to limit the range of material spreading. The outer surface of the push-turning arm (4) is provided with a downward push arm (5) that converts the upward movement into downward and inward driving. The bottom surface of the mounting plate (12) is provided with a bottom shell (6) that forms a frame and gathers inward to control the range of material spreading and prevent splashing.

2. The semi-automatic corundum sand spreading machine according to claim 1, characterized in that: The discharge trough (2) includes an inner and outer shell (21), which is fixedly connected to the inner surface of the buffer box (1). An inner mounting cylinder (22) is fixedly connected to the inner surface of the inner shell (21). A lifting column (23) for lifting is slidably connected to the inner surface of the inner mounting cylinder (22). A top opening and closing valve (231) for controlling top input is fixedly connected to the top surface of the lifting column (23). A lifting slider (232) for triggering is fixedly connected to the outer surface of the lifting column (23). A bottom mounting column (24) is fixedly connected to the bottom surface of the lifting column (23). A bottom opening and closing valve (242) for controlling bottom output is fixedly connected to the outer surface of the lifting column (23).

3. A semi-automatic corundum sand spreading machine according to claim 2, characterized in that: The material spreading rod (3) includes a rotating sleeve (31), which is rotatably connected to the bottom surface of the inner mounting cylinder (22). Corundum sand is buffered inside. A fixed material rod (32) is fixedly connected to the outer surface of the rotating sleeve (31). A movable material rod (321) is sleeved on the outer surface of the fixed material rod (32), and the movable material rod (321) can slide on the surface of the fixed material rod (32). One end of the movable material rod (321) is fixedly connected to a limit pin (34).

4. A semi-automatic corundum sand spreading machine according to claim 3, characterized in that: The push-flip arm (4) includes a mounting hinge arm (41), which is hinged to the inner surface of the mounting plate (12). One end of the mounting hinge arm (41) is hinged to a pressure-bearing hinge arm (411) to withstand pressure and unfold. One end of the pressure-bearing hinge arm (411) is hinged to a push-flip arm (412) to push after unfolding. A buffer column (42) is fixedly connected to the outer surface of the push-flip arm (412), and a push-flip sleeve (43) is slidably connected to the outer surface of the buffer column (42).

5. A semi-automatic corundum sand spreading machine according to claim 4, characterized in that: The pressure-bearing hinge arm (411) contacts the lifting slider (232).

6. A semi-automatic corundum sand spreading machine according to claim 5, characterized in that: The downward push arm (5) includes a mounting housing (51), which is fixedly connected to the outer surface of the buffer box (1). The outer surface of the mounting housing (51) is provided with a sliding groove (511). The inner surface of the mounting housing (51) is rotatably connected to an L-shaped block (52) with a maximum rotation angle of 90 degrees. The outer surface of the L-shaped block (52) is fixedly connected to a driven push-pull rod (521). The outer surface of the L-shaped block (52) is fixedly connected to a trigger arm (53), which is placed at an angle of 45 degrees. The inner surface of the trigger arm (53) is slidably connected to a connecting bracket (531).

7. A semi-automatic corundum sand spreading machine according to claim 6, characterized in that: The driven push-pull rod (521) is slidably connected to the inner surface of the push sleeve (43).

8. A semi-automatic corundum sand spreading machine according to claim 7, characterized in that: The bottom shell (6) includes inclined slide grooves (61), all at a 45-degree angle. The inclined slide grooves (61) are fixedly connected to the bottom surface of the mounting plate (12). A connecting column (62) is slidably connected to the inner surface of the inclined slide grooves (61). An upper frame (63) is fixedly connected to the bottom surface of the connecting column (62). A limiting slide groove (631) is opened on the inner surface of the upper frame (63). A lower frame (64) is slidably connected to the bottom surface of the connecting column (62). A clamping soft rubber (642) is fixedly connected to the bottom surface of the lower frame (64).

9. A semi-automatic corundum sand spreading machine according to claim 8, characterized in that: The limiting slide groove (631) is slidably connected to the limiting pin (34), and the lower frame (64) is fixedly connected to the connecting bracket (531).

10. A semi-automatic corundum sand spreading machine and method, using a semi-automatic corundum sand spreading machine as described in any one of claims 1-9, characterized in that, Includes the following steps: S1, the buffer box (1) stores corundum sand, the top cover (11) is used for feeding, the mounting plate (12) is the feeding area, the top opening and closing valve (231) and the bottom opening and closing valve (242) of the discharge chute (2) are initially closed to prevent corundum sand from falling, the movable material rod (321) of the feeding rod (3) is fitted on the fixed material rod (32) to adapt to the size of the magnetic core, the upper frame (63) and the lower frame (64) of the bottom shell (6) are initially in a high position and do not wrap the magnetic core, the push flipping arm (4) and the push pushing arm (5) are initially in an unfolded state and have not triggered any action; S2. The device moves above the magnetic core, the contact ball (241) contacts the surface of the magnetic core and is lifted, driving the lifting column (23) to rise. The top opening and closing valve (231) and the bottom opening and closing valve (242) rise with the lifting column (23) to open the discharge channel. The corundum sand falls from the buffer box (1) through the gap between the inner and outer shell (21) and the top opening and closing valve (231) into the rotating sleeve (31). Some of the corundum sand is directly sprinkled onto the surface of the magnetic core through the gap between the rotating sleeve (31) and the bottom opening and closing valve (242). The lifting slider (232) rises to trigger the downward push arm (5). The baffle plate (2321) blocks the lifting slide (211) to prevent the corundum sand from leaking. S3. The drive motor (313) starts and drives the rotating sleeve (31) to rotate back and forth through the active gear (312) and the driven gear groove (311). The corundum sand is thrown into the fixed material rod (32) and the movable material rod (321) and is evenly spread out through the spreading groove (322). The rotation expands the spreading range. The movable material rod (321) adapts to the extension and retraction according to the size of the magnetic core. The limiting pin (34) slides along the limiting slide groove (631). S4. The lifting column (23) rises and pushes the flipping arm (4), which pushes the driven push rod (521) of the downward push arm (5) outward and downward. The L-shaped block (52) rotates, which drives the trigger arm (53) and the connecting bracket (531) to move downward and inward. This drives the lower frame (64) to converge obliquely along the inclined slide (61), the upper frame (63) to move horizontally, and the lower frame (64) to move up and down and horizontally in sync. Finally, the magnetic core is wrapped, limiting the material spreading range and preventing splashing. S5. After the material is spread, the device moves out of the magnetic core, the contact ball (241) loses support, the lifting column (23) descends, the top opening and closing valve (231) and the bottom opening and closing valve (242) close, the material is stopped, the pushing and turning arm (4) and the pressing and pushing arm (5) are reset under the action of gravity and the return spring (331), and the bottom shell (6) unfolds back to the initial high position.

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