Grinding device for paint production

Abstract

The present application relates to the technical field of grinding equipment, and discloses a grinding device for paint production, which comprises a grinding tank, a grinding plate is installed in the grinding tank, a rotating plate is rotatably installed in the grinding tank, a first grinding block and a second grinding block are slidably installed on the rotating plate, the first grinding block is sleeved on the second grinding block, a first motor is fixedly installed on the top of the grinding tank, the rotating plate is fixedly connected with the output shaft of the first motor, the top of the first grinding block is fixedly connected with a first pull rope, the top of the second grinding block is fixedly connected with a second pull rope, a first lifting assembly for pulling up the first pull rope and a second lifting assembly for pulling up the second pull rope are installed on the rotating plate, the number of times that the second lifting assembly pulls up the second pull rope per unit time is more than the number of times that the first lifting assembly pulls up the first pull rope per unit time, and the first lifting assembly and the second lifting assembly are driven by the same driving assembly. The second grinding block can impact the grinding plate at a high frequency, the gathering effect is good, and the grinding efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, and in particular to a grinding device for coating production. Background Technology

[0002] In the paint production process, the sand mill is one of the core pieces of equipment, directly affecting the fineness, dispersibility, and quality stability of the product. The grinding process mainly relies on mechanical force to tear and disperse pigment clumps and agglomerated pigment particles under the action of shearing force, impact force, and friction force, while expelling air bubbles. This grinds larger powder particles to a specified fineness, thereby obtaining a uniformly dispersed and fine color paste in the paint.

[0003] The grinding equipment for producing nano-coatings, disclosed in CN119034872A, includes a grinding box and a buffer mechanism disposed inside the grinding box. It further includes: a grinding mechanism located at the top of the grinding box, comprising a grinding block; the grinding mechanism drives the grinding block to rotate via a spline shaft fixed to the bottom of a drive shaft, causing rotational friction between the grinding block and a grinding plate slidably connected to the inner wall of the grinding box, used to grind agglomerated nanoparticles into tiny particles, which fall from the sieve holes of the grinding plate to the top of a receiving plate fixed at the bottom of the grinding box; a negative pressure fan, assembled to generate downward negative pressure inside the grinding box to prevent the ground nanoparticles from floating upwards; and an adjustment mechanism, assembled to cooperate with the grinding mechanism, using a guide plate fixed to the outer wall of the spline shaft in conjunction with an electric telescopic rod fixed inside a fixed base, causing the spline shaft to be affected by the electric telescopic rod, causing the grinding block to move upwards and downwards, separating the grinding block from the grinding plate and then bringing them closer again, used to enhance the grinding effect and cause the grinding plate to vibrate.

[0004] Based on the above technical features, the problem is that in the prior art, the pigment clumps are crushed by the impact of the grinding block. During the extrusion process, the pigment powder tends to stick to the grinding plate, which slows down the subsequent aggregation of pigment clumps towards the center of the grinding plate. The aggregation effect of pigment clumps is poor and the grinding efficiency is low.

[0005] Therefore, it is necessary to solve the above problems by using a grinding device for paint production. Summary of the Invention

[0006] The purpose of this invention is to provide a grinding apparatus for paint production to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a grinding device for paint production, comprising a grinding jar, wherein an inverted conical grinding plate is installed inside the grinding jar; a rotating plate is rotatably installed inside the grinding jar, and a vertically placed first slide rod and a second slide rod are slidably installed on the upper limit of the rotating plate;

[0008] The first slide bar is fixedly connected to the first grinding block, and the second slide bar is fixedly connected to the second grinding block; the bottom of both the first grinding block and the second grinding block is a tapered head that matches the grinding plate.

[0009] The second grinding block is located directly above the grinding plate; the first grinding block is fitted onto the second grinding block, and the second grinding block slides through the first grinding block;

[0010] The first motor is fixedly installed on the top of the grinding jar, and the rotating plate is fixedly connected to the output shaft of the first motor;

[0011] The top of the first grinding block is fixedly connected to a first pull rope, and the top of the second grinding block is fixedly connected to a second pull rope; the rotating plate is equipped with a first lifting assembly for pulling up the first pull rope and a second lifting assembly for pulling up the second pull rope;

[0012] The second lifting component pulls up the second rope more times per unit time than the first lifting component pulls up the first rope more times per unit time; the first and second lifting components are driven by the same drive component.

[0013] Preferably, the first lifting assembly includes a first turntable with a horizontal central axis, which is rotatably mounted on a rotating plate; the middle position of the axial end of the first turntable away from the rotating plate is fixedly connected to the rope end of the first pull rope away from the first grinding block; two first eccentric shafts are provided on the first turntable, which abut against the first pull rope after contacting it; the two first eccentric shafts are evenly distributed along the circumference of the first turntable.

[0014] Preferably, the second lifting assembly includes a second turntable with a horizontal central axis, the central axis of the second turntable being parallel to the central axis of the first turntable, and the second turntable being rotatably mounted on a rotating plate; the middle position of the axial end of the second turntable away from the rotating plate is fixedly connected to the rope end of the second pull rope away from the second grinding block; two second eccentric shafts are provided on the second turntable, which abut against the second pull rope after contacting it; the two second eccentric shafts are evenly distributed along the circumference of the second turntable.

[0015] Preferably, the drive assembly includes a second motor fixedly mounted on the turntable, the output shaft of the second motor being coaxially and fixedly connected to the second turntable; a first gear is fixedly sleeved on the output shaft of the second motor, and the second gear is coaxially and fixedly connected to the first turntable; the first gear and the second gear mesh with each other, and the root circle radius of the second gear is larger than that of the first gear; the turntable is equipped with a first release member for disengaging the first pull rope from the first eccentric shaft and a second release member for disengaging the second pull rope from the second eccentric shaft.

[0016] Preferably, the first release component includes a first arc rack and a third gear; the first arc rack is fixed on the rotating plate, and the center of the arc of the first arc rack is located on the central axis of the first turntable; the first eccentric shaft passes through the first turntable and is rotatably connected to the first turntable, and the third gear is coaxially fixed to the end of the first eccentric shaft near the rotating plate; a first torsion spring is sleeved on the first eccentric shaft, one end of the first torsion spring is fixedly connected to the first turntable, and the other end is fixedly connected to the first eccentric shaft; the third gear meshes with the first arc rack after contact, and the end of the first eccentric shaft away from the third gear has a first inclined surface for the first pull rope to slide down.

[0017] Preferably, the second release component includes a second arc rack and a fourth gear; the second arc rack is mounted on the rotating plate, and the center of the arc of the second arc rack is located on the central axis of the second turntable; the second eccentric shaft passes through the second turntable and is rotatably connected to the second turntable, and the fourth gear is coaxially fixed to the end of the second eccentric shaft near the rotating plate; a second torsion spring is sleeved on the second eccentric shaft, one end of the second torsion spring is fixedly connected to the second turntable, and the other end is fixedly connected to the second eccentric shaft; the fourth gear meshes with the second arc rack after contact, and a second inclined surface is provided at the end of the second eccentric shaft away from the fourth gear for the second pull rope to slide down.

[0018] Preferably, the second arc rack is fixed on a connecting block; a groove is formed in the rotating plate, and the groove opening is parallel to the central axis of the second turntable; the connecting block and the groove are in a limiting sliding fit, and a second spring is provided in the groove along the sliding direction of the connecting block; one end of the second spring is fixedly connected to the connecting block, and the other end is fixedly connected to the rotating plate; two arc magnets are fixedly provided on the axial end of the first turntable facing the rotating plate, and the arc centers of the two arc magnets are both located on the central axis of the first turntable; the two arc magnets are evenly distributed along the circumference of the first turntable and both magnetically attract the connecting block; a pulley is fixedly sleeved on each of the two second eccentric shafts, and the two pulleys are driven and sleeved in the same synchronous belt.

[0019] Preferably, the grinding jar is a circular cross-section jar, and the grinding plate is coaxially and slidably installed inside the grinding jar; a plurality of support seats are fixedly arranged on the inner wall of the grinding jar, and the plurality of support seats are evenly distributed along the circumference of the grinding jar; a plurality of vertical support rods are fixedly arranged on the end of the grinding plate away from the grinding surface, and the plurality of support rods correspond one-to-one with the plurality of support seats; each support rod passes downward through the corresponding support seat and is limited and slidably engaged with the corresponding support seat; a first spring is sleeved on each support rod, the top end of each first spring is fixedly connected to the grinding plate, and the bottom end of each first spring is fixedly connected to the support seat corresponding to the support rod.

[0020] Preferably, a feed pipe is fixedly and connected to the grinding jar; a collection box is installed inside the grinding jar, the collection box is connected to the grinding jar, and the grinding jar has an opening for the collection box to slide; a sieve hole is formed on the grinding plate, and the grinding plate is located between the feed pipe and the collection box.

[0021] Preferably, the first grinding block and the second grinding block together form a gyroscope-shaped grinding block, and the distance between the central axis of the second eccentric shaft and the central axis of the second turntable is equal to the distance between the central axis of the first eccentric shaft and the central axis of the first turntable; a mounting groove is radially formed in the first grinding block, and a slot is radially formed in the second grinding block; the openings of the mounting groove and the slot are opposite each other; a cylinder is fixedly installed in the mounting groove, and the telescopic shaft of the cylinder is fixedly connected to the insert block; the insert block is both limited and slidably engaged with the mounting groove and limited and inserted into the slot.

[0022] The technical effects and advantages of this invention are as follows: When agglomerating pigment clumps, the second grinding block can impact the grinding plate at a high frequency, thereby causing the grinding plate to vibrate at a high frequency, which in turn causes the pigment clumps to quickly agglomerate to the center of the grinding plate; at the same time, the second grinding block can also impact the grinding plate together with the first grinding block to crush the pigment clumps; the agglomeration effect is good and the grinding efficiency is high. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the interior of the grinding jar of the present invention;

[0025] Figure 3 This is an enlarged schematic diagram of point A in the present invention;

[0026] Figure 4 This is a schematic diagram of the grinding block of the present invention;

[0027] Figure 5 This is a schematic diagram of the driving component of the present invention;

[0028] Figure 6 This is a schematic diagram of the first and second pull ropes of the present invention;

[0029] Figure 7 This is a schematic diagram of the interior of the first turntable of the present invention;

[0030] Figure 8 This is a schematic diagram of the interior of the second turntable of the present invention;

[0031] Figure 9 This is a schematic diagram of the first and second release members of the present invention;

[0032] Figure 10This is a top view of the first and second release members of the present invention;

[0033] Figure 11 This is a partial three-dimensional schematic diagram of the present invention;

[0034] Figure 12 This is a schematic diagram of the connecting block of the present invention;

[0035] Figure 13 This is a schematic diagram of two second circular arc racks in Embodiment 3 of the present invention.

[0036] In the diagram: 1. Grinding jar; 2. Feed pipe; 3. First motor; 4. Collection box; 5. Rotary plate; 6. Grinding plate; 7. First connecting ear; 8. Second connecting ear; 9. First grinding block; 10. Second grinding block; 11. Cylinder; 12. Support rod; 13. First spring; 14. Support base; 15. First turntable; 16. First eccentric shaft; 17. Second turntable; 18. First pull rope; 19. Second pull rope; 20. First slide rod; 21. Second slide rod; 22. Second motor; 23. First gear; 24. Second gear; 25. Third gear; 26. Arc magnet; 27. First arc rack; 28. Second arc rack; 29. ​​Second spring; 30. First inclined plane; 31. Second eccentric shaft; 32. Fourth gear; 33. Synchronous belt; 34. Second inclined plane. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] Example 1: The present invention provides, as follows Figures 1 to 12 The illustrated grinding apparatus for paint production includes a grinding jar 1, which is a circular cross-section container. An inverted conical grinding plate 6 is installed inside the grinding jar 1, and the grinding plate 6 is coaxially and slidably mounted within the grinding jar 1. The grinding plate 6 has sieve holes for allowing the ground paint powder to fall through.

[0039] Several support seats 14 are fixedly installed on the inner wall of the grinding jar 1, and the support seats 14 are evenly distributed along the circumference of the grinding jar 1. Several vertical support rods 12 are fixedly installed on the end of the grinding plate 6 away from the grinding surface, and the support rods 12 correspond one-to-one with the support seats 14. Each support rod 12 passes downward through the corresponding support seat 14 and is in a limiting sliding fit with the corresponding support seat 14.

[0040] Each support rod 12 is fitted with a first spring 13. The top end of each first spring 13 is fixedly connected to the grinding plate 6, and the bottom end of each first spring 13 is fixedly connected to the support seat 14 corresponding to the support rod 12.

[0041] A limit cap is fixedly installed at the bottom of each support rod 12 to prevent the support rod 12 from detaching from the corresponding support seat 14.

[0042] A feed pipe 2 is fixedly installed and connected to the grinding jar 1. A collection box 4 is installed inside the grinding jar 1, and the collection box 4 is connected to the grinding jar 1. An opening is provided on the grinding jar 1 for the collection box 4 to slide.

[0043] The grinding plate 6 is located between the feed pipe 2 and the collection box 4.

[0044] A rotating plate 5 is rotatably installed inside the grinding jar 1. The rotating plate 5 is a T-shaped plate, including a horizontal plate and a vertical plate. A first motor 3 is fixedly installed on the top of the grinding jar 1. The output shaft of the first motor 3 faces vertically downward and is fixedly connected to the horizontal plate of the rotating plate 5. The connection point between the output shaft of the first motor 3 and the horizontal plate is located in the middle of the horizontal plate.

[0045] An L-shaped plate is fixedly installed at the bottom of the horizontal plate, and the L-shaped plate is located on the center line along the width direction of the horizontal plate. A first sliding rod 20 and a second sliding rod 21 are vertically mounted on the L-shaped plate. The first sliding rod 20 and the second sliding rod 21 are rods with a square cross-section. The first sliding rod 20 and the second sliding rod 21 penetrate the horizontal plate of the L-shaped plate and slide in a limiting engagement with the horizontal plate. A limiting plate is fixedly installed at the top of the first sliding rod 20 and the second sliding rod 21. A first grinding block 9 is fixedly connected to the bottom end of the first sliding rod 20, and a second grinding block 10 is fixedly connected to the bottom end of the second sliding rod 21.

[0046] The bottoms of both the first grinding block 9 and the second grinding block 10 are tapered heads that match the grinding plate 6. The second grinding block 10 is located directly above the grinding plate 6 and also directly below the output shaft of the first motor 3. The first grinding block 9 is fitted onto the second grinding block 10, and the second grinding block 10 slides through the first grinding block 9. The first grinding block 9 and the second grinding block 10 together form a gyroscope-shaped grinding block.

[0047] Two first pull ropes 18 are provided on the top of the first grinding block 9, and a second pull rope 19 is fixedly provided on the top of the second grinding block 10. A first lifting assembly for pulling up the two first pull ropes 18 and a second lifting assembly for pulling up the second pull rope 19 are installed on the rotating plate 5.

[0048] The second lifting assembly pulls up the second rope 19 more times per unit time than the first lifting assembly pulls up both first ropes 18 more times per unit time. The first and second lifting assemblies are driven by the same drive assembly.

[0049] One end of each of the two first pull ropes 18 is fixedly connected to the first grinding block 9, and the other end of each of the two first pull ropes 18 is connected to the first lifting assembly via transmission.

[0050] One end of the second pull rope 19 is fixedly connected to the second grinding block 10, and the other end is connected to the second lifting assembly via a transmission.

[0051] Specifically, the first lifting assembly includes a first turntable 15 with a horizontal central axis, which is rotatably mounted on the vertical plate of the rotating plate 5. In this embodiment, there are two first turntables 15, and the central axes of the two first turntables 15 are at the same height and parallel to each other.

[0052] Each of the two first turntables 15 has a first rotating shaft coaxially fixed to its end face facing the vertical plate of the rotating plate 5. Both first rotating shafts pass through the vertical plate of the rotating plate 5 and are rotatably connected to the vertical plate.

[0053] Two first turntables 15 correspond one-to-one with two first pull ropes 18. The middle position of the axial end of each first turntable 15 away from the vertical plate of the turntable 5 is fixedly connected to the rope end of the corresponding first pull rope 18 away from the first grinding block 9.

[0054] Specifically, the second lifting assembly includes a second turntable 17 with a horizontal central axis. The second turntable 17 is rotatably mounted on the vertical plate of the rotating plate 5 and is located between two first turntables 15. The central axes of the second turntable 17 and the two first turntables 15 are all horizontal, and the second turntable 17 and the two first turntables 15 are arranged in a row along the length of the rotating plate 5.

[0055] A second rotating shaft is coaxially fixed to the end face of the second turntable 17 facing the vertical plate of the rotating plate 5. The second rotating shaft passes through the vertical plate of the rotating plate 5 and is rotatably connected to the vertical plate.

[0056] The second turntable 17 is fixedly connected to the middle position of the axial end of the vertical plate of the turntable 5 away from the second pull rope 19 away from the rope end of the second grinding block 10.

[0057] Specifically, the drive assembly includes a second motor 22, and an inverted L-shaped plate is fixedly disposed on the end face of the rotating plate 5 away from the second turntable 17 and the two first turntables 15, and the second motor 22 is fixedly mounted on the inverted L-shaped plate.

[0058] The output shaft of the second motor 22 is coaxially and fixedly connected to the second rotating shaft. A first gear 23 is fixedly sleeved on the output shaft of the second motor 22, and a second gear 24 is fixedly sleeved on the ends of the two first rotating shafts away from the connected first turntable 15. Both second gears 24 mesh with the first gear 23. The root circle radii of the two second gears 24 are equal and both are larger than the root circle radius of the first gear 23.

[0059] It should be noted that, to prevent the first pull rope 18 and the second pull rope 19 from twisting, a first protrusion is rotatably installed at the center of the axial end of each first turntable 15 away from the vertical plate of the turntable 5, and the end of each first pull rope 18 away from the first grinding block 9 is fixedly connected to the first protrusion on the connected first turntable 15. A second protrusion is rotatably installed at the center of the axial end of the second turntable 17 away from the vertical plate of the turntable 5, and the end of the second pull rope 19 away from the second grinding block 10 is fixedly connected to the second protrusion.

[0060] Two symmetrically arranged first connecting ears 7 are rotatably installed on the top of the first grinding block 9, and the two first connecting ears 7 correspond one-to-one with the two first pull ropes 18.

[0061] The ends of the two first pull ropes 18 that are away from the first protrusion they are connected to are fixedly connected to the corresponding first connecting ears 7.

[0062] The second connecting ear 8 is rotatably mounted on the top of the second grinding block 10, and the end of the second pull rope 19 away from the second protrusion is fixedly connected to the second connecting ear 8.

[0063] Two first eccentric shafts 16 are provided on the two first turntables 15, which abut against the first pull rope 18 after contacting it. The two first eccentric shafts 16 located on the same first turntable 15 are evenly distributed along the circumference of the first turntable 15. Each first eccentric shaft 16 passes through the first turntable 15 and is rotatably connected to the first turntable 15.

[0064] Two second eccentric shafts 31 are provided on the second turntable 17, which abut against the second pull rope 19 after contacting it. The two second eccentric shafts 31 are evenly distributed along the circumference of the second turntable 17. Each second eccentric shaft 31 passes through the second turntable 17 and is rotatably connected to the second turntable 17.

[0065] In this embodiment, the distance between the central axis of the second eccentric shaft 31 and the central axis of the second turntable 17 is set to be equal to the distance between the central axis of the first eccentric shaft 16 and the central axis of the first turntable 15.

[0066] It should be noted that each first eccentric shaft 16 is parallel to and offset from the central axis of the first turntable 15. Each second eccentric shaft 31 is parallel to and offset from the central axis of the second turntable 17.

[0067] The rotating plate 5 is equipped with a first release member that causes the first pull rope 18 to disengage from the first eccentric shaft 16 and a second release member that causes the second pull rope 19 to disengage from the second eccentric shaft 31.

[0068] Specifically, the first release component includes a first arc rack 27 and a third gear 25. Two first arc racks 27 are fixedly installed on the end face of the vertical plate of the rotating plate 5 facing the two first turntables 15. The two first arc racks 27 are at the same height and correspond one-to-one with the two first turntables 15.

[0069] The center of the arc of each first arc rack 27 is located on the central axis of the corresponding first turntable 15, and each first arc rack 27 is located diagonally above the central axis of the corresponding first turntable 15. The two first arc racks 27 are in the same position relative to the corresponding first turntable 15.

[0070] Each first eccentric shaft 16 is coaxially and fixedly connected to a third gear 25 that meshes with the first arc rack 27 corresponding to the first turntable 15. Each first eccentric shaft 16 is fitted with a first torsion spring, one end of which is fixedly connected to the first turntable 15 where the first eccentric shaft 16 is fitted, and the other end of which is fixedly connected to the third gear 25 on the first eccentric shaft 16.

[0071] Each first eccentric shaft 16 has a first inclined surface 30 at its end away from the connected third gear 25 for the first pull rope 18 to slide down. Each first inclined surface 30 is a cross section of the first eccentric shaft 16.

[0072] The length of each first protrusion along the axial direction of the first turntable 15 is equal to the length of the short end of the circumferential surface of each first eccentric shaft 16 along the axial direction.

[0073] Specifically, the second release component includes a second arc rack 28 and a fourth gear 32. The second arc rack 28 is fixedly mounted on the end face of the vertical plate of the rotating plate 5 facing the second turntable 17, and the center of the arc of the second arc rack 28 is located on the central axis of the second turntable 17. The second arc rack 28 is located diagonally below the central axis of the second turntable 17.

[0074] Each second eccentric shaft 31 is coaxially fixed to a fourth gear 32 at the end near the vertical plate of the rotating plate 5. Both fourth gears 32 mesh with the second arc rack 28 after contact.

[0075] Each second eccentric shaft 31 is fitted with a second torsion spring. One end of each second torsion spring is fixedly connected to the second turntable 17, and the other end is fixedly connected to the fourth gear 32 on the second eccentric shaft 31.

[0076] Each second eccentric shaft 31 has a second inclined surface 34 at its end away from the connected fourth gear 32 for the second pull rope 19 to slide down. Each second inclined surface 34 is a cross section of the second eccentric shaft 31.

[0077] The length of the second protrusion along the axis of the second turntable 17 is equal to the length of the short end of the circumferential curved surface of each second eccentric shaft 31 along the axis.

[0078] Working principle of Example 1: When using this grinding device to grind the raw materials for producing coatings, firstly, the raw materials for producing coatings are added into the grinding tank 1 through the feed pipe 2. Under the action of gravity, a portion of the raw materials slide along the grinding surface of the grinding plate 6 to the grinding surface between the first grinding block 9 and the grinding surface of the grinding plate 6, and between the second grinding block 10 and the grinding surface of the grinding plate 6.

[0079] Next, the first motor 3 is started. The output shaft of the first motor 3 drives the rotating plate 5 to rotate, and the rotating plate 5 drives the L-shaped plate to revolve around the output shaft of the first motor 3. The L-shaped plate pushes the first slide rod 20 and the second slide rod 21 to revolve around the output shaft of the first motor 3. The first slide rod 20 drives the first grinding block 9 to rotate around the output shaft of the first motor 3, and the second slide rod 21 drives the second grinding block 10 to rotate around the output shaft of the first motor 3. The first grinding block 9 and the second grinding block 10 grind the raw material.

[0080] During the grinding process, the raw material powder with the correct size falls through the sieve holes of the grinding plate 6 and eventually into the collection box 4. To facilitate the collection of the raw material powder with the correct size, a negative pressure fan can be used for auxiliary collection, as described in the grinding equipment for producing nano-coatings as disclosed in CN119034872A. This technology is existing technology and will not be described in detail here.

[0081] After grinding for a period of time, the second motor 22 is started. The output shaft of the second motor 22 drives the second rotating shaft and the first gear 23 to rotate.

[0082] When the second rotating shaft rotates, it drives the second turntable 17 to rotate, and the second turntable 17 drives the two second eccentric shafts 31 to revolve around the second rotating shaft. During the revolution, the longer end of the circumferential curved surface of the lower second eccentric shaft 31 gradually contacts and abuts against the second pull rope 19. Then, the second eccentric shaft 31 pushes and pulls the second pull rope 19, and the second pull rope 19 pulls the second grinding block 10 upward. During this process, due to the friction and the elastic force of the second torsion spring, the longer end of the circumferential curved surface of the second eccentric shaft 31 remains in contact with the second pull rope 19.

[0083] Next, as the second turntable 17 continues to rotate, the second eccentric shaft 31, which abuts against the second pull rope 19, drives the fourth gear 32 to contact and mesh with the second arc rack 28. Then, the second arc rack 28 pushes the meshed fourth gear 32 to rotate, which in turn drives the second eccentric shaft 31, which abuts against the second pull rope 19, to rotate. During this process, the second torsion spring on the second eccentric shaft 31, which abuts against the second pull rope 19, twists, and the second inclined surface 34 on the second eccentric shaft 31 gradually rotates until it contacts the second pull rope 19. After the second inclined surface 34 contacts the second pull rope 19, under the weight of the second grinding block 10, the second pull rope 19 disengages from the second eccentric shaft 31. During this process, under the elastic force of the second torsion spring, the second eccentric shaft 31 reverses and resets. After the second pull rope 19 disengages from the second eccentric shaft 31, the second grinding block 10 falls and impacts the grinding plate 6.

[0084] As the second turntable 17 rotates continuously, the two second eccentric shafts 31 alternately abut against the second pull rope 19, causing the second grinding block 10 to move up and down periodically, thus periodically impacting the grinding plate 6. Simultaneously, because the second turntable 17 is directly connected to the output shaft of the second motor 22 via the second rotating shaft, the second turntable 17 rotates at a high speed, resulting in a high frequency of impact between the second grinding block 10 and the grinding plate 6. This causes the grinding plate 6 to vibrate up and down at a high frequency under the action of the first spring 13, causing the raw material and material clumps on the grinding plate 6 to gather between the grinding surfaces of the first grinding block 9 and the grinding plate 6, and between the second grinding block 10 and the grinding plate 6.

[0085] When the first gear 23 rotates, it drives the two second gears 24 to rotate synchronously in the same direction. Since the first gear 23 is a small gear and the two second gears 24 are large gears, the rotational speed of the two second gears 24 is less than the rotational speed of the first gear 23. In this embodiment, the rotational speed of the first gear 23 is set to be an integer multiple of the rotational speed of the two second gears 24.

[0086] When the two second gears 24 rotate, they drive the connected first rotating shaft to rotate. The two first rotating shafts drive the connected first turntable 15 to rotate, and each first eccentric shaft 16 revolves around the first rotating shaft connected to the first turntable 15.

[0087] Since the two first turntables 15 rotate synchronously, we will now describe one of the first turntables 15 as an example, and the other one is the same.

[0088] As the two first eccentric shafts 16 on the first turntable 15 revolve around the first axis, the longer end of the circumferential curved surface of the lower first eccentric shaft 16 gradually contacts and abuts against the first pull rope 18. Then, the first eccentric shaft 16 pushes and pulls the first pull rope 18, which in turn pulls the first grinding block 9 upwards. During this process, due to friction and the elastic force of the first torsion spring, the longer end of the circumferential curved surface of the first eccentric shaft 16 remains in contact with the first pull rope 18.

[0089] Next, as the first turntable 15 continues to rotate, the first eccentric shaft 16, which abuts against the first pull rope 18, drives the third gear 25 to contact and mesh with the first arc rack 27. Then, the first arc rack 27 pushes the meshed third gear 25 to rotate, which in turn drives the first eccentric shaft 16, which abuts against the first pull rope 18, to rotate. During this process, the first torsion spring on the first eccentric shaft 16, which abuts against the first pull rope 18, twists, and the first inclined surface 30 on the first eccentric shaft 16 gradually rotates until it contacts the first pull rope 18. After the first inclined surface 30 contacts the first pull rope 18, under the weight of the first grinding block 9, the first pull rope 18 disengages from the first eccentric shaft 16. During this process, under the elastic force of the first torsion spring, the first eccentric shaft 16 reverses and resets. After the first pull rope 18 disengages from the first eccentric shaft 16, the first grinding block 9 falls and impacts the grinding plate 6.

[0090] As the first turntable 15 rotates continuously, the two first eccentric shafts 16 alternately abut against the first pull rope 18, causing the first grinding block 9 to move up and down periodically, thus periodically impacting the grinding plate 6. Simultaneously, because the first turntable 15 is directly connected to the second gear 24 via the first rotating shaft, the rotation speed of the first turntable 15 is slow, resulting in a low frequency of impact between the first grinding block 9 and the grinding plate 6. This allows the first grinding block 9 to effectively crush agglomerated raw materials when impacting the grinding plate 6.

[0091] Since the frequency of the reciprocating movement of the second grinding block 10 is an integer multiple of that of the first grinding block 9, the second grinding block 10 strikes the grinding plate 6 at the same time as the first grinding block 9 strikes it. At this moment, the first grinding block 9 and the second grinding block 10 together crush the agglomerated raw materials.

[0092] When the second motor 22 starts, which is equivalent to several complete cycles of the first grinding block 9 moving up and down, the second motor 22 is turned off. At this time, the first grinding block 9 and the second grinding block 10 return to their original positions.

[0093] It should be noted that the turntable 5 is equipped with a microcomputer system such as a PLC or a microcontroller to control the start and stop of the second motor 22.

[0094] Example 2: This example is a further optimization of Example 1. The difference lies in that the second arc-shaped rack 28 is slidably mounted on the vertical plate of the rotating plate 5. Specifically, the second arc-shaped rack 28 is fixed to a connecting block, which is a right-angled block with rectangular cross-sections for its two perpendicular sections. A horizontal groove is formed inside the rotating plate 5, with the groove opening parallel to the central axis of the second turntable 17. One of the connecting blocks is inserted into the groove and slides within it. A second spring 29 is provided inside the groove along the sliding direction of the connecting block, with one end fixedly connected to the connecting block and the other end fixedly connected to the rotating plate 5.

[0095] The second arc rack 28 is fixed on another block of the connecting block, and a guide rod is fixedly installed on the end face of the block near the vertical plate of the rotating plate 5. The guide rod is parallel to the central axis of the second turntable 17, and the guide rod is inserted into the vertical plate of the rotating plate 5 and slides with the vertical plate in a limiting manner.

[0096] Two arc-shaped magnets 26 are fixedly installed on the axial end of the first turntable 15 facing the vertical plate of the turntable 5. The two arc-shaped magnets 26 are embedded in the first turntable 15. The arc centers of the two arc-shaped magnets 26 are located on the central axis of the first turntable 15. The two arc-shaped magnets 26 are evenly distributed along the circumference of the first turntable 15 and are magnetically attracted to the connecting block.

[0097] A pulley is fixedly mounted on each of the two second eccentric shafts 31 on the first turntable 15 with embedded arc magnets 26, and the two pulleys are connected to the same synchronous belt 33 for transmission.

[0098] The working principle of Embodiment 2 differs from that of Embodiment 1 in that, when the first turntable 15 with embedded arc-shaped magnets 26 rotates, the two arc-shaped magnets 26 alternately and intermittently magnetically attract the connecting block. During this magnetic attraction, the connecting block slides into contact with the arc-shaped magnets 26. At this time, the second spring 29 is stretched, and the fourth gears 32 on the two second eccentric shafts 31, during their revolution, can contact and mesh with the second arc-shaped rack 28.

[0099] When the arc magnet 26 is separated from the connecting block, under the elastic force of the second spring 29, the connecting block causes the second arc rack 28 and the fourth gear 32 to be misaligned in their revolution circumference paths, so that the fourth gear 32 on the two second eccentric shafts 31 cannot contact and mesh with the second arc rack 28 during the revolution.

[0100] When the two fourth gears 32 cannot contact and mesh with the second arc rack 28, the long ends of the circumferential curved surfaces of the two second eccentric shafts 31 successively abut against the second pull rope 19 and push and pull the second pull rope 19. At this time, the upward distance of the second grinding block 10 is greater than the upward distance of the second grinding block 10 in Embodiment 1, thereby increasing the force of the second grinding block 10 hitting the grinding plate 6 when it falls.

[0101] When the two fourth gears 32 can contact and mesh with the second arc rack 28, after one of the fourth gears 32 meshes with the second arc rack 28, the second arc rack 28 pushes the fourth gear 32 to rotate. The fourth gear 32 drives the other fourth gear 32 to rotate through two pulleys and a synchronous belt 33. At this time, the two fourth gears 32 rotate synchronously, the two second eccentric shafts 31 rotate synchronously, and the two second inclined surfaces 34 contact the second pull rope 19 synchronously. The second pull rope 19 slides off the two second eccentric shafts 31, and the second grinding block 10 falls.

[0102] Example 3: Figure 13 As shown, this example is a further optimization of Embodiment 2, which adds a cylinder 11 to Embodiment 2. A mounting groove is radially formed inside the first grinding block 9, and a slot is radially formed inside the second grinding block 10. The openings of the mounting groove and the slot are opposite each other.

[0103] The cylinder 11 is fixedly installed in the mounting slot, and the telescopic shaft of the cylinder 11 is fixedly connected to the insert block. The insert block has both a limiting sliding fit with the mounting slot and a limiting insertion fit with the slot.

[0104] The slot opening is chamfered to facilitate the insertion of the plug.

[0105] Meanwhile, two second arc-shaped racks 28 are symmetrically arranged, one above the other, on the end face of the vertical plate of the rotating plate 5 facing the second turntable 17, relative to the second rotating axis. The connection and engagement relationship of the two second arc-shaped racks 28 are the same as in Embodiment 2. Further details will not be provided here.

[0106] Both arc-shaped magnets 26 are quarter-circle arcs and are evenly distributed along the circumference of the first turntable 15.

[0107] The working principle of Embodiment 3: During grinding, one end of the insert is located in the mounting groove and the other end is located in the slot to prevent the first grinding block 9 and the second grinding block 10 from being misaligned.

[0108] Before the second motor 22 is turned on, the telescopic shaft of the cylinder 11 drives the insert block to disengage from the slot and slide completely into the mounting groove. This facilitates the up-and-down movement of the first grinding block 9 and the second grinding block 10.

[0109] Before shutting off the second motor 22, the cylinder 11 can be activated during the simultaneous descent of the first grinding block 9 and the second grinding block 10. At this time, the telescopic shaft of the cylinder 11 will push a portion of the insert block into the slot again.

[0110] To facilitate understanding that the first grinding block 9 and the second grinding block 10 move down synchronously, in this embodiment, it is set that when the first turntable 15 rotates once, the second turntable 17 rotates twice.

[0111] The initial position of the first eccentric shaft 16, which first abuts the first pull rope 18, is located at the lowest point of the revolution circle. The initial position of the second eccentric shaft 31, which first abuts the second pull rope 19, is also located at the lowest point of the revolution circle. Furthermore, one of the arc-shaped magnets 26 is located below, and the other is located above.

[0112] After the second motor 22 starts, the second turntable 17 rotates half a revolution, while the first turntable 15 rotates a quarter revolution. During this process, the lower arc-shaped magnet 26 continuously attracts the lower connecting block. Simultaneously, as the second turntable 17 rotates, the second eccentric shaft 31, which first abuts against the second pull rope 19, pushes and pulls the second pull rope 19, causing the second grinding block 10 to move upward; the first eccentric shaft 16, which first abuts against the first pull rope 18, pushes and pulls the first pull rope 18, causing the first grinding block 9 to move upward. Furthermore, the fourth gear 32 on the second eccentric shaft 31, which first abuts against the second pull rope 19, will contact and mesh with the lower second arc-shaped rack 28. After the fourth gear 32 disengages from the second arc-shaped rack 28, the second pull rope 19 slides off the second eccentric shaft 31, and the second grinding block 10 falls.

[0113] The second turntable 17 continues to rotate half a revolution, while the first turntable 15 continues to rotate a quarter revolution. During this process, the arc-shaped magnet 26, which is attracted to the connecting block located below, detaches from the connecting block and attracts the connecting block located above. At the same time, the second eccentric shaft 31, which rotates to the lower side, pushes and pulls the second pull rope 19; the first pull rope 18 is then pushed and pulled by the first eccentric shaft 16. At this time, both the first grinding block 9 and the second grinding block 10 move upward.

[0114] As the second turntable 17 and the first turntable 15 continue to rotate, the third gear 25 on the first eccentric shaft 16, which abuts against the first pull rope 18, gradually contacts and meshes with the first arc rack 27; the fourth gear 32 on the second eccentric shaft 31, which abuts against the second pull rope 19, gradually contacts and meshes with the upper second arc rack 28. Since the second turntable 17 rotates faster than the first turntable 15, the third gear 25 on the first eccentric shaft 16, which abuts against the first pull rope 18, contacts and meshes with the first arc rack 27 first. As the second turntable 17 continues to rotate, the fourth gear 32 on the second eccentric shaft 31, which abuts against the second pull rope 19, contacts and meshes with the upper second arc rack 28. Finally, the disengagement of the third gear 25 on the first eccentric shaft 16, which abuts against the first pull rope 18, from the first arc rack 27 and the disengagement of the fourth gear 32 on the second eccentric shaft 31, which abuts against the second pull rope 19, from the upper second arc rack 28 occur simultaneously. At this time, the first pull rope 18 slides down from the first eccentric shaft 16 and the second pull rope 19 slides down from the second eccentric shaft 31 simultaneously, and the first grinding block 9 and the second grinding block 10 move down synchronously.

[0115] As the first grinding block 9 and the second grinding block 10 move down synchronously, the cylinder 11 can be activated to push a portion of the insert block into the slot.

[0116] It should be noted that the timer function of the microcomputer system can be used to ensure that the moment when the cylinder 11 is closed falls within the time period when the first grinding block 9 and the second grinding block 10 move down synchronously after the second motor 22 is started, thereby ensuring that a part of the insert block can be inserted into the slot.

[0117] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A grinding apparatus for paint production, comprising a grinding jar (1), characterized in that: An inverted conical grinding plate (6) is installed inside the grinding jar (1); a rotating plate (5) is rotatably installed inside the grinding jar (1), and a vertically placed first slide rod (20) and second slide rod (21) are slidably installed on the upper limit of the rotating plate (5). The first slide bar (20) is fixedly connected to the first grinding block (9), and the second slide bar (21) is fixedly connected to the second grinding block (10); the bottom of the first grinding block (9) and the second grinding block (10) are both conical heads that match the grinding plate (6); The second grinding block (10) is located directly above the grinding plate (6); the first grinding block (9) is fitted onto the second grinding block (10), and the second grinding block (10) slides through the first grinding block (9); The first motor (3) is fixedly installed on the top of the grinding jar (1), and the rotating plate (5) is fixedly connected to the output shaft of the first motor (3); The top of the first grinding block (9) is fixedly connected to a first pull rope (18), and the top of the second grinding block (10) is fixedly connected to a second pull rope (19); the rotating plate (5) is equipped with a first lifting assembly for pulling up the first pull rope (18) and a second lifting assembly for pulling up the second pull rope (19); The second lifting component pulls up the second rope (19) more times per unit time than the first lifting component pulls up the first rope (18) more times per unit time; the first lifting component and the second lifting component are driven by the same drive component; The first lifting assembly includes a first turntable (15) with a horizontal central axis, which is rotatably mounted on a rotating plate (5). The middle part of the axial end of the first turntable (15) away from the rotating plate (5) is fixedly connected to the end of the first pull rope (18) away from the first grinding block (9). Two first eccentric shafts (16) are provided on the first turntable (15) and abut against the first pull rope (18) after contacting it. The two first eccentric shafts (16) are evenly distributed along the circumference of the first turntable (15). The second lifting assembly includes a second turntable (17) with its central axis horizontal. The central axis of the second turntable (17) is parallel to the central axis of the first turntable (15). The second turntable (17) is rotatably mounted on the rotating plate (5). The middle position of the axial end of the second turntable (17) away from the rotating plate (5) is fixedly connected to the rope end of the second pull rope (19) away from the second grinding block (10). Two second eccentric shafts (31) are provided on the second turntable (17) and abut against the second pull rope (19) after contacting it. The two second eccentric shafts (31) are evenly distributed along the circumference of the second turntable (17). The drive assembly includes a second motor (22) fixedly mounted on a rotating plate (5), the output shaft of the second motor (22) being coaxially and fixedly connected to a second turntable (17); a first gear (23) is fixedly sleeved on the output shaft of the second motor (22), and a second gear (24) is coaxially and fixedly connected to the first turntable (15); the first gear (23) and the second gear (24) mesh with each other, and the root radius of the second gear (24) is larger than the root radius of the first gear (23); a first release member for disengaging the first pull rope (18) from the first eccentric shaft (16) and a second release member for disengaging the second pull rope (19) from the second eccentric shaft (31) are installed on the rotating plate (5).

2. The grinding device for paint production according to claim 1, characterized in that: The first release component includes a first arc rack (27) and a third gear (25); the first arc rack (27) is fixed on the rotating plate (5), and the arc center of the first arc rack (27) is located on the central axis of the first turntable (15); the first eccentric shaft (16) passes through the first turntable (15) and is rotatably connected to the first turntable (15); the third gear (25) is coaxially fixed to the end of the first eccentric shaft (16) near the rotating plate (5); a first torsion spring is sleeved on the first eccentric shaft (16), one end of the first torsion spring is fixedly connected to the first turntable (15), and the other end is fixedly connected to the first eccentric shaft (16); the third gear (25) meshes with the first arc rack (27) after contact, and the end of the first eccentric shaft (16) away from the third gear (25) is provided with a first inclined surface (30) for the first pull rope (18) to slide down.

3. The grinding device for paint production according to claim 1, characterized in that: The second release component includes a second arc rack (28) and a fourth gear (32); the second arc rack (28) is mounted on the rotating plate (5), and the arc center of the second arc rack (28) is located on the central axis of the second turntable (17); the second eccentric shaft (31) passes through the second turntable (17) and is rotatably connected to the second turntable (17); the fourth gear (32) is coaxially fixed to the end of the second eccentric shaft (31) near the rotating plate (5); a second torsion spring is sleeved on the second eccentric shaft (31), one end of the second torsion spring is fixedly connected to the second turntable (17), and the other end is fixedly connected to the second eccentric shaft (31); the fourth gear (32) meshes with the second arc rack (28) after contact, and a second inclined surface (34) for the second pull rope (19) to slide off is opened at the end of the second eccentric shaft (31) away from the fourth gear (32).

4. A grinding device for paint production according to claim 3, characterized in that: The second arc rack (28) is fixed on a connecting block; a groove is opened in the rotating plate (5), and the groove opening is parallel to the central axis of the second turntable (17); the connecting block and the groove are limited and slidably fitted, and a second spring (29) is provided in the groove along the sliding direction of the connecting block; one end of the second spring (29) is fixedly connected to the connecting block, and the other end is fixedly connected to the rotating plate (5); two arc magnets (26) are fixedly provided on the axial end of the first turntable (15) facing the rotating plate (5), and the arc center of the two arc magnets (26) is located on the central axis of the first turntable (15); the two arc magnets (26) are evenly distributed along the circumference of the first turntable (15) and both magnetically attract the connecting block; a pulley is fixedly sleeved on each of the two second eccentric shafts (31), and the two pulleys are driven and sleeved in the same synchronous belt (33).

5. A grinding device for paint production according to claim 1, characterized in that: The grinding jar (1) is a circular cross-section jar body, and the grinding plate (6) is coaxially slidably installed inside the grinding jar (1); a number of support seats (14) are fixedly arranged on the inner wall of the grinding jar (1), and the number of support seats (14) are evenly distributed along the circumference of the grinding jar (1); a number of vertical support rods (12) are fixedly arranged on the end of the grinding plate (6) away from the grinding surface, and the number of support rods (12) corresponds one-to-one with the number of support seats (14); each support rod (12) passes downward through the corresponding support seat (14) and is limited and slidably engaged with the corresponding support seat (14); a first spring (13) is sleeved on each support rod (12), the top end of each first spring (13) is fixedly connected to the grinding plate (6), and the bottom end of each first spring (13) is fixedly connected to the support seat (14) corresponding to the support rod (12).

6. A grinding device for paint production according to claim 1, characterized in that: The grinding jar (1) is fixedly and connected to a feed pipe (2); a collection box (4) is installed inside the grinding jar (1), the collection box (4) is connected to the grinding jar (1), and the grinding jar (1) has an opening for the collection box (4) to slide; the grinding plate (6) has a sieve hole, and the grinding plate (6) is located between the feed pipe (2) and the collection box (4).

7. A grinding device for paint production according to claim 1, characterized in that: The first grinding block (9) and the second grinding block (10) together form a gyroscope-shaped grinding block. The distance between the central axis of the second eccentric shaft (31) and the central axis of the second turntable (17) is equal to the distance between the central axis of the first eccentric shaft (16) and the central axis of the first turntable (15). The first grinding block (9) has a radially opened mounting groove, and the second grinding block (10) has a radially opened slot. The openings of the mounting groove and the slot are opposite to each other. The cylinder (11) is fixedly installed in the mounting groove, and the telescopic shaft of the cylinder (11) is fixedly connected to the insert. The insert is both limited and slidably fitted with the mounting groove and limitedly fitted with the slot.

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