CN110000079B - Powder coating packagine machine of screening granule - Google Patents

Abstract

The invention belongs to the technical field of packaging equipment, and particularly relates to a powder coating packaging machine for screening particles, which comprises a blanking ring cylinder mechanism, a transmission mechanism, a rotary cylinder, a fixed support and the like, wherein the blanking ring cylinder mechanism internally provided with the transmission mechanism is fixedly arranged on the fixed support; the powder coating packaging machine can realize the screening of powder coatings from the hopper on particles with different sizes through the fine screening cylinder and the coarse screening cylinder which are lifted alternately, thereby improving the screening efficiency of the coatings; the powder coating packaging machine can respectively drive the coarse screen cylinder and the fine screen cylinder to alternately lift through the first rack and the second rack by only one self-locking motor, so that the powder coating is automatically screened, the production cost of the equipment is reduced, the control system of the motor is simplified, and the equipment is easier to operate.

Description

Powder coating packagine machine of screening granule

Technical Field

The invention belongs to the technical field of packaging equipment, and particularly relates to a powder coating packaging machine for screening particles.

Background

The traditional powder coating has the characteristics of less components, no solvent volatilization, no pollution, high mechanical strength of a coating film and the like, and is widely applied to coating of shells of products in various industries such as automobiles, household appliances and the like; with the increasing market demand, the production technology of powder coating is also continuously improved, various technologies for powder coating production are continuously perfected, but the ground powder coating still needs to be manually screened step by step according to the particle size in the production process of the existing powder coating, the screening time is long, the screening effect is poor, and the working efficiency is low.

The invention designs a powder coating packaging machine for screening particles, which solves the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a powder coating packaging machine for screening particles, which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "below", "upper" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships which the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the equipment or the elements which are referred to must have a specific orientation, be constructed in a specific orientation or be operated, and thus cannot be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

A powder coating packagine machine of screening granule which characterized in that: the device comprises a blanking ring cylinder mechanism, a transmission mechanism, a rotary cylinder, a gear ring, a rotary positioning ring, a first connecting plate, a second connecting plate, a first rotary ring block, a second rotary ring block, a rotary round block, a fine screen cylinder, a second rack, a coarse screen cylinder, a first rack, a third gear, an electric drive module, a third fixed base, a blanking pipe and a fixed support, wherein the blanking ring cylinder mechanism internally provided with the transmission mechanism is fixedly arranged on the fixed support; a rotary cylinder with a rotary positioning ring fixedly arranged on the outer cylindrical surface of the lower end is arranged at the upper end of the blanking ring cylinder mechanism; the gear ring is fixedly arranged at the upper end of the rotary cylinder; two first connecting plates are uniformly arranged on the inner cylindrical surface at the upper end of the rotating cylinder along the circumferential direction, and a first rotating ring block, a second rotating ring block and a rotating circular block which are mutually sleeved are respectively concentrically arranged at the lower end inside the rotating cylinder through two second connecting plates which are symmetrically distributed and respectively connected with the two first connecting plates.

A fine screen cylinder with a plurality of fine screen grooves uniformly distributed along the circumferential direction on the outer cylindrical surface is embedded in an annular gap between the rotary circular block positioned at the central position and the second rotary ring block; the lower end of the fine screen cylinder is provided with a second rack matched with the transmission mechanism; a coarse screen cylinder with a plurality of coarse screen grooves uniformly distributed on the outer cylindrical surface along the circumferential direction is embedded in an annular gap between the second rotating ring block and the first rotating ring block; the lower end of the coarse screen cylinder is provided with a first rack matched with the transmission mechanism; and a third gear meshed with the gear ring is arranged on an output shaft of the electric driving module which is arranged on the blanking ring cylinder mechanism through a third fixed base.

The blanking ring cylinder mechanism comprises an outer step cylinder, an inner step cylinder and a base circular plate, wherein the inner step cylinder is sleeved in the outer step cylinder, the inner cylindrical surface of the upper end of the inner step cylinder is circumferentially provided with a ring groove, the outer step cylinder and the inner step cylinder are fixedly connected through a plurality of symmetrically distributed connecting blocks, and the base circular plate, the central plate surface of which is provided with a blanking hole, is fixedly arranged in the inner step cylinder; the rotary positioning ring slides in the ring groove in a rotating way; the annular space between the outer stepped cylinder and the inner stepped cylinder corresponds to the annular interval between the rotary cylinder and the first rotary ring block; the blanking hole on the circular plate of the base is connected with the through hole at the center of the rotary round block above the blanking pipe.

The transmission mechanism comprises a second base shell, a differential mechanism, a second gear, a fixed block, a limiting spring, a limiting wheel and a self-locking motor, wherein the second base shell is fixedly arranged on a base circular plate, and the differential mechanism is arranged in the second base shell through a second fixed base; one output shaft of the differential mechanism is provided with a second gear meshed with the first rack, and the other output shaft is coaxially provided with a limiting wheel and a second gear meshed with the second rack; a fixing block fixedly arranged on the second base shell is provided with a circular groove, and the circular groove is in clearance fit with the limiting wheel; the limiting block is slidably arranged in a second limiting groove on the inner wall of the circular groove, and one end of the limiting block, which is provided with two inclined planes which are intersected up and down, is matched with the first limiting groove on the outer cylindrical surface of the limiting wheel; the self-locking motor is arranged on the second base shell through the first fixed base, and the output shaft of the self-locking motor is connected with the differential input shaft in the differential mechanism; the limiting spring is positioned in the second limiting groove and plays a reset function on the movement of the limiting block.

As a further improvement of the technology, the upper end face of the rotary round block, the upper end face of the first rotary ring block and the upper end face of the second rotary ring block are located in the same horizontal plane, so that the first rotary ring block and the second rotary ring block are prevented from retaining powder coating, and the screened powder coating moves to the rotary cylinder and falls into the packaging bag through the discharging ring cylinder mechanism.

As a further improvement of the technology, in an initial state, the bottom surface of the fine screen groove on the fine screen cylinder, the upper end surface of the coarse screen cylinder and the upper end surface of the rotary round block are positioned in the same horizontal plane, so that small particles in the powder coating positioned in the fine screen cylinder can be completely screened out from the fine screen groove, and the powder coating screened out from the fine screen groove can not be blocked by the coarse screen groove and can completely move to the rotary cylinder and fall into a packaging bag through a discharging ring cylinder mechanism.

As a further improvement of the technology, when the coarse screen cylinder moves upwards to a limit position along an annular gap between the first rotating ring block and the second rotating ring block, the bottom surface of a coarse screen groove on the coarse screen cylinder, the upper end surface of the fine screen cylinder and the upper end surface of the rotating round block are positioned in the same horizontal plane, so that the upper end surface of the fine screen cylinder cannot block the powder coating, and the powder coating coming out of the fine screen cylinder moves to the coarse screen cylinder completely; smaller particles of the powder coating material located in the coarse screen cylinder can be screened out entirely through the coarse screen groove without being blocked by the bottom of the coarse screen groove.

As a further improvement of the present technology, two opposite side walls in the second base housing are respectively provided with a trapezoidal guide groove in the vertical direction, and one side wall in the second base housing, which is not provided with the trapezoidal guide groove, is provided with a through fourth shaft hole and a through fifth shaft hole; a first trapezoidal guide block is arranged on the side face of the lower end of the first rack and slides in a corresponding trapezoidal guide groove on the inner wall of the second base shell; and a second trapezoidal guide block is arranged on the side surface of the lower end of the second rack, slides in another trapezoidal guide groove on the inner wall of the second base shell and plays a role in guiding the movement of the first rack and the second rack.

As a further improvement of the technology, the lower end of the second gear is provided with a differential spring, and the lower end of the differential spring is connected with the bottom in the second base shell; the differential spring is always in a compressed state.

As a further improvement of the technology, the annular space is arranged between the first rotary ring block and the inner cylindrical surface of the rotary cylinder, so that the powder coating screened by the coarse screening cylinder or the fine screening cylinder can have the annular space between the first rotary ring block and the inner cylindrical surface of the rotary cylinder, and then fall into the packaging bag through the blanking ring cylinder mechanism.

As a further improvement of the technology, the upper end of the connecting block is a tip formed by two crossed inclined planes, and the connecting block with the structure can not retain part of the powder coating, so that the powder coating falling from the first rotating ring block and the inner cylindrical surface of the rotating cylinder with annular space can be ensured to fall into the packaging belt.

As a further improvement of the present technology, the differential mechanism comprises a first base housing, a first shaft hole, a gear barrel, a second bevel gear, a second output shaft, a first bevel gear, a first output shaft, a first gear, and a differential input shaft, wherein a second shaft hole and a third shaft hole having the same central axis are formed on two opposite side surfaces of the first base housing, and a first shaft hole is formed on a side surface on which the third shaft hole is formed; the gear barrel with the outer cylindrical surface as the tooth surface is installed in the first base shell through a second output shaft, one end of the second output shaft extends out of the third shaft hole, the second output shaft is matched with the third shaft hole through a bearing, and the second output shaft is matched with the gear barrel through a bearing; a second bevel gear is fixedly arranged at one end of the second output shaft, which is positioned in the gear barrel; the two second bevel gears are uniformly arranged on the inner cylindrical surface of the gear barrel along the circumferential direction through corresponding shafts matched with the bearings, and the two second bevel gears are meshed with the first bevel gear on the second output shaft; a first bevel gear is fixedly arranged at one end of the first output shaft matched with the second shaft hole bearing and positioned in the first base shell, and the first bevel gear is meshed with the two second bevel gears; the central axis of the first shaft hole is superposed with the central axis of the second shaft hole; and a first gear is fixedly arranged at one end of the differential input shaft matched with the first shaft hole bearing, which is positioned in the first base shell, and the first gear is meshed with the gear barrel.

One end of a second output shaft provided with a second gear penetrates through the fourth shaft hole and extends out of the outer side of the second base shell, a limiting wheel is arranged at one end, positioned on the outer side of the second base shell, of the second output shaft, the second gear is in key fit with the second output shaft, and the limiting wheel is in key fit with the second output shaft; the differential input shaft passes through the fifth shaft hole and is connected with an output shaft of the self-locking motor.

The self-locking motor is connected with a remote control system.

The electric driving module in the invention is the prior art, and consists of a speed reducer and a motor, wherein an output shaft of the motor is connected with an input shaft of the speed reducer; the third gear is mounted on the output shaft of the reducer.

According to the invention, the annular space between the outer stepped cylinder and the inner stepped cylinder corresponds to the annular interval between the rotary cylinder and the first rotary ring block, so that powder coating leaked from the annular interval between the rotary cylinder and the first rotary ring block directly falls between the outer stepped cylinder and the inner stepped cylinder and is filled into the packaging bags positioned below the outer stepped cylinder and the inner stepped cylinder.

The differential mechanism has the same working principle as a differential in an automobile, and a first output shaft, a second output shaft and a differential input shaft in the differential mechanism correspond to two output half shafts and a driving input shaft in the automobile differential.

Compared with the traditional powder coating packaging machine, the powder coating packaging machine can realize the screening of powder coatings from the hopper on different particles through the fine screening cylinder and the coarse screening cylinder which are lifted alternately, the powder coatings mixed by the large particles and the small particles from the hopper are classified by coarse and fine screening, and the powder coatings with different sizes and particles which are screened out are filled into different packaging bags, so that the coating screening efficiency is improved; the traditional equipment for screening the powder coating needs to realize alternate lifting between the fine screen cylinder and the coarse screen cylinder through alternate work of two motors, and the powder coating packaging machine can respectively drive the coarse screen cylinder and the fine screen cylinder to alternately lift through the first rack and the second rack through only one self-locking motor, so that the automatic screening of the powder coating is realized, the production cost of the equipment is reduced, the control system of the motors is simplified, and the equipment is easier to operate; the invention has simple structure and better use effect.

Drawings

Fig. 1 is a schematic view of a powder paint packaging machine.

Fig. 2 is a schematic partial cross-sectional view of a powder paint packaging machine.

Fig. 3 is a schematic view of the combination of the rotary cylinder, the gear ring, the rotary positioning ring, the first connecting plate, the second connecting plate, the first rotary ring block, the second rotary ring block and the rotary round block.

FIG. 4 is a schematic cross-sectional view of the rotary cylinder, the gear ring, the rotary positioning ring, the first connecting plate, the second connecting plate, the first rotary ring block, the second rotary ring block and the rotary round block.

FIG. 5 is a schematic view of the combination of the fine screen cylinder, the second rack, the second trapezoidal guide block and the differential spring.

FIG. 6 is a schematic view of the combination of the coarse screen cylinder, the first rack and the first trapezoid guide block.

Fig. 7 is a schematic view of the transmission mechanism.

FIG. 8 is a cross-sectional view of the transmission mechanism, the first rack and the second rack.

FIG. 9 is a schematic view of the transmission mechanism, the first rack, the second rack, and the differential spring.

Fig. 10 is a schematic perspective view of a second base housing.

Fig. 11 is a schematic cross-sectional view of a trapezoidal channel in the second base housing.

FIG. 12 is a schematic view of the cross section of the fixing block, the limiting spring and the limiting wheel.

Fig. 13 is a perspective schematic view of a fixed block.

Fig. 14 is a perspective schematic view of the spacing wheel.

Fig. 15 is a schematic view of the blanking cartridge mechanism.

Fig. 16 is a schematic sectional view of the blanking drum mechanism.

Fig. 17 is a perspective schematic view of a differential mechanism.

Fig. 18 is a schematic sectional view of the differential mechanism.

Fig. 19 is a schematic cross-sectional view showing the engagement of two first bevel gears, a third bevel gear, a gear barrel and a first gear in the differential mechanism.

Fig. 20 is a schematic perspective view of a first base housing.

FIG. 21 is a schematic view of the internal gearing of the differential mechanism.

Fig. 22 is a schematic perspective view of a connector block.

FIG. 23 is a cross-sectional view of the differential mechanism and the locking motor.

Number designation in the figures: 1. a blanking ring cylinder mechanism; 2. an outer stepped barrel; 3. a ring groove; 4. an inner stepped barrel; 5. a base circular plate; 6. a blanking hole; 7. connecting blocks; 8. a transmission mechanism; 9. a second base housing; 10. a trapezoidal guide groove; 11. a fourth shaft hole; 12. a fifth shaft hole; 13. a differential mechanism; 14. a second gear; 15. a fixed block; 16. a circular groove; 17. a second limit groove; 18. a limiting block; 19. a limiting spring; 20. a limiting wheel; 21. a first limit groove; 22. a self-locking motor; 23. a first stationary base; 24. a second stationary base; 25. a rotary drum; 26. a toothed ring; 27. rotating the positioning ring; 28. a first connecting plate; 29. a second connecting plate; 30. a first rotating ring block; 31. a second rotating ring block; 32. rotating the round block; 33. a fine screen cylinder; 34. a fine screen groove; 35. a second rack; 36. a second trapezoidal guide block; 37. a differential spring; 38. a coarse screen drum; 39. a coarse screening tank; 40. a first rack; 41. a first trapezoidal guide block; 42. a third gear; 43. an electric drive module; 44. a third stationary base; 45. a discharging pipe; 46. fixing a bracket; 47. a first base housing; 48. a second shaft hole; 49. a third shaft hole; 50. a first shaft hole; 51. a gear barrel; 52. a second bevel gear; 53. a second output shaft; 54. a first bevel gear; 55. a first output shaft; 56. a first gear; 57. a differential input shaft; 58. and (4) a hopper.

Detailed Description

The drawings are schematic illustrations of the implementation of the present invention to facilitate understanding of the principles of structural operation. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 1 and 2, the feeding device comprises a feeding ring cylinder mechanism 1, a transmission mechanism 8, a rotary cylinder 25, a toothed ring 26, a rotary positioning ring 27, a first connecting plate 28, a second connecting plate 29, a first rotary ring block 30, a second rotary ring block 31, a rotary round block 32, a fine screen cylinder 33, a second rack 35, a coarse screen cylinder 38, a first rack 40, a third gear 42, an electric drive module 43, a third fixed base 44, a feeding pipe 45 and a fixed support 46, wherein as shown in fig. 1 and 2, the feeding ring cylinder mechanism 1 internally provided with the transmission mechanism 8 is fixedly arranged on the fixed support 46; as shown in fig. 2 and 3, a rotary cylinder 25 fixedly provided with a rotary positioning ring 27 on the outer cylindrical surface of the lower end is arranged at the upper end of the blanking ring cylinder mechanism 1; as shown in fig. 3, a toothed ring 26 is fixedly mounted on the upper end of the rotary cylinder 25; as shown in fig. 3 and 4, two first connection plates 28 are uniformly installed on the inner cylindrical surface of the upper end of the rotary cylinder 25 along the circumferential direction, and a first rotary ring block 30, a second rotary ring block 31 and a rotary ring block 32, which are nested with each other, are concentrically installed at the lower end of the interior of the rotary cylinder 25 through two second connection plates 29, which are symmetrically distributed and respectively connected with the two first connection plates 28.

As shown in fig. 2 and 5, a fine screen cylinder 33 with a plurality of fine screen slots 34 uniformly distributed along the circumferential direction on the outer cylindrical surface is embedded in the annular gap between the rotating circular block 32 at the central position and the second rotating ring block 31; the lower end of the fine screen cylinder 33 is provided with a second rack 35 matched with the transmission mechanism 8; as shown in fig. 2 and 6, a coarse screen cylinder 38 with a plurality of coarse screen grooves 39 uniformly distributed along the circumferential direction on the outer cylindrical surface is embedded in the annular gap between the second rotary ring block 31 and the first rotary ring block 30; the lower end of the coarse screen cylinder 38 is provided with a first rack 40 matched with the transmission mechanism 8; as shown in fig. 1 and 2, a third gear 42 engaged with the gear ring 26 is mounted on an output shaft of an electric drive module 43 mounted on the lower shroud ring mechanism 1 via a third mount 44.

As shown in fig. 15 and 16, the blanking ring cylinder mechanism 1 includes an outer stepped cylinder 2, an inner stepped cylinder 4, and a base circular plate 5, wherein as shown in fig. 16, the inner stepped cylinder 4 is sleeved in the outer stepped cylinder 2 having a ring groove 3 along the circumferential direction on the inner cylindrical surface at the upper end, the outer stepped cylinder 2 and the inner stepped cylinder 4 are fixedly connected through a plurality of symmetrically distributed connecting blocks 7, and the base circular plate 5 having a blanking hole 6 on the central plate surface is fixedly installed in the inner stepped cylinder 4; as shown in fig. 2, the rotary positioning ring 27 slides in the ring groove 3 in a rotating manner; as shown in fig. 2, the annular space between the outer stepped cylinder 2 and the inner stepped cylinder 4 corresponds to the annular space between the rotary cylinder 25 and the first rotary ring block 30; the blanking hole 6 on the base circular plate 5 is connected with the through hole at the center of the upper rotary round block 32 through a blanking pipe 45.

As shown in fig. 7 and 8, the transmission mechanism 8 includes a second base housing 9, a differential mechanism 13, a second gear 14, a fixing block 15, a limiting block 18, a limiting spring 19, a limiting wheel 20, and a self-locking motor 22, wherein as shown in fig. 2, the second base housing 9 is fixedly mounted on the base circular plate 5; as shown in fig. 8 and 9, a second gear 14 engaged with the first rack 40 is mounted on one output shaft of the differential mechanism 13, and a limit wheel 20 and a second gear 14 engaged with the second rack 35 are coaxially mounted on the other output shaft; as shown in fig. 12 and 13, the fixing block 15 fixedly mounted on the second base housing 9 has a circular groove 16, and the circular groove 16 is in clearance fit with the limiting wheel 20; as shown in fig. 8, 12 and 14, the limiting block 18 is slidably mounted in the second limiting groove 17 on the inner wall of the circular groove 16, and one end of the limiting block 18, which is provided with two inclined planes intersecting up and down, is matched with the first limiting groove 21 on the outer cylindrical surface of the limiting wheel 20; as shown in fig. 9 and 23, the self-locking motor 22 is mounted on the second base housing 9 through the first fixing base 23, and an output shaft thereof is connected to a differential input shaft 57 in the differential mechanism 13; as shown in fig. 12, the stopper spring 19 is located in the second stopper groove 17 to perform a return function for the movement of the stopper 18.

As shown in fig. 2 and 3, the upper end surface of the rotary round block 32, the upper end surface of the first rotary ring block 30, and the upper end surface of the second rotary ring block 31 are located in the same horizontal plane, so as to ensure that the powder coating is not retained by the first rotary ring block 30 and the second rotary ring block 31, and the powder coating screened out completely moves to the rotary cylinder 25 and falls into the packaging bag through the blanking ring cylinder mechanism 1.

As shown in fig. 2, in the initial state, the bottom surface of the fine screen groove 34 on the fine screen cylinder 33, the upper end surface of the coarse screen cylinder 38 and the upper end surface of the rotary round block 32 are located in the same horizontal plane, so that the smaller particles in the powder coating in the fine screen cylinder 33 can be all screened from the fine screen groove 34, and the powder coating screened from the fine screen groove 34 can move to the rotary cylinder 25 without being blocked by the coarse screen groove 39 and fall into the packaging bag through the blanking annular cylinder mechanism 1.

As shown in fig. 2, when the coarse screen cylinder 38 moves upward to the limit position along the annular gap between the first rotating ring block 30 and the second rotating ring block 31, the bottom surface of the coarse screen groove 39 on the coarse screen cylinder 38, the upper end surface of the fine screen cylinder 33 and the upper end surface of the rotating round block 32 are located in the same horizontal plane, so that the upper end surface of the fine screen cylinder 33 does not block the powder coating, and the powder coating coming out of the fine screen cylinder 33 completely moves to the coarse screen cylinder 38; the smaller particles of the powder coating material located in the coarse screen cylinder 38 can be screened out entirely through the coarse screen groove 39 without being blocked by the bottom surface of the coarse screen groove 39.

As shown in fig. 10 and 11, two opposite side walls in the second base housing 9 are respectively provided with a vertical trapezoidal guide groove 10, and one side wall in the second base housing 9, on which the trapezoidal guide groove 10 is not provided, is provided with a through fourth shaft hole 11 and a through fifth shaft hole 12; as shown in fig. 6 and 8, a first trapezoidal guide block 41 is installed on the side surface of the lower end of the first rack 40, and the first trapezoidal guide block 41 slides in the corresponding trapezoidal guide groove 10 on the inner wall of the second base housing 9; as shown in fig. 5 and 9, a second trapezoidal guide block 36 is mounted on a lower end side surface of the second rack 35, and the second trapezoidal guide block 36 slides in another trapezoidal guide groove 10 on the inner wall of the second base housing 9 to guide the movement of the first rack 40 and the second rack 35.

As shown in fig. 9, a differential spring 37 is mounted on the lower end of the second gear 14, and the lower end of the differential spring 37 is connected to the inner bottom of the second chassis housing 9; the differential spring 37 is always in a compressed state.

As shown in fig. 2, the first rotary ring block 30 is spaced from the inner cylindrical surface of the rotary cylinder 25 by an annular distance, so that the powder coating sieved by the coarse sieve cylinder 38 or the fine sieve cylinder 33 can pass through the first rotary ring block 30 and the inner cylindrical surface of the rotary cylinder 25 by the annular distance, and then fall into the packaging bag through the blanking ring cylinder mechanism 1.

As shown in fig. 22, the upper end of the connecting piece 7 is a tip formed by two intersecting inclined surfaces, and the connecting piece 7 of this structure does not retain a part of the powder coating material, so that the powder coating material falling from the first rotary ring piece 30 and the inner cylindrical surface of the rotary cylinder 25 with an annular space therebetween is completely dropped into the packing tape.

As shown in fig. 17 and 18, the differential mechanism 13 includes a first base housing 47, a first shaft hole 50, a gear barrel 51, a second bevel gear 52, a second output shaft 53, a first bevel gear 54, a first output shaft 55, a first gear 56, and a differential input shaft 57, wherein as shown in fig. 20, a second shaft hole 48 and a third shaft hole having the same central axis are formed on two opposite side surfaces of the first base housing 47, and a first shaft hole 50 is formed on the side surface on which the third shaft hole is formed; as shown in fig. 18 and 19, the gear barrel 51 with the outer cylindrical surface as the tooth surface is installed in the first base housing 47 through the second output shaft 53, one end of the second output shaft 53 extends out of the third shaft hole, the second output shaft 53 is in bearing fit with the third shaft hole, and the second output shaft 53 is in bearing fit with the gear barrel 51; a second bevel gear 52 is fixedly arranged at one end of the second output shaft 53 positioned in the gear barrel 51; two second bevel gears 52 are uniformly arranged on the inner cylindrical surface of the gear barrel 51 along the circumferential direction through corresponding shafts matched with the bearings, and the two second bevel gears 52 are meshed with a first bevel gear 54 on a second output shaft 53; a first bevel gear 54 is fixedly mounted on one end of the first output shaft 55 which is in bearing fit with the second shaft hole 48 and positioned in the first base shell 47, and the first bevel gear 54 is meshed with the two second bevel gears 52; as shown in FIG. 20, the first shaft bore 50 coincides with the central axis of the second shaft bore 48; as shown in fig. 19 and 21, a first gear 56 is fixedly mounted on one end of the differential input shaft 57 in the first base housing 47, which is in bearing fit with the first shaft hole 50, and the first gear 56 is meshed with the gear barrel 51.

As shown in fig. 8 and 23, one end of the second output shaft 53 provided with the second gear 14 passes through the fourth shaft hole 11 and extends out of the second base housing 9, the limiting wheel 20 is mounted on one end of the second output shaft 53 located at the outer side of the second base housing 9, the second gear 14 is in key fit with the second output shaft 53, and the limiting wheel 20 is in key fit with the second output shaft 53; the differential input shaft 57 passes through the fifth shaft hole 12 and is connected with the output shaft of the self-locking motor 22.

The self-locking motor 22 in the invention is connected with a remote control system.

The electric driving module 43 of the present invention is the prior art, and is composed of a speed reducer and a motor, wherein the output shaft of the motor is connected with the input shaft of the speed reducer; the third gear 42 is mounted on the output shaft of the reducer.

In the invention, the annular space between the outer stepped cylinder 2 and the inner stepped cylinder 4 corresponds to the annular space between the rotary cylinder 25 and the first rotary ring block 30, so that the powder coating leaked from the annular space between the rotary cylinder 25 and the first rotary ring block 30 directly falls between the outer stepped cylinder 2 and the inner stepped cylinder 4 and is filled into a packaging bag positioned below the outer stepped cylinder 2 and the inner stepped cylinder 4.

The differential mechanism 13 of the present invention works on the same principle as the differential mechanism of an automobile, and the first output shaft 55, the second output shaft 53 and the differential input shaft 57 of the differential mechanism 13 correspond to two output half shafts and a driving input shaft of the automobile differential mechanism.

The working process of the invention is as follows: in the initial state, the first trapezoidal guide block 41 is located at the bottom of the corresponding trapezoidal guide groove 10, the second trapezoidal guide block 36 is located at the top of the corresponding trapezoidal guide groove 10, the distance between the first trapezoidal guide block 41 and the top of the corresponding trapezoidal guide groove 10 is equal to the distance between the second trapezoidal guide block 36 and the bottom of the corresponding trapezoidal guide groove 10, one end of the limiting block 18 with the inclined surface is located in the first limiting groove 21 on the limiting wheel 20, the through hole at the center of the rotary circular block 32 is blocked by the plug to prevent the powder coating from leaking out of the through hole, and the spring of the limiting block 18 is in a pre-compression state.

For the grinding of the blocky powder coating, a conveying and grinding device in the prior art is adopted, and the ground powder coating particles are conveyed into a hopper 58; the hopper 58 of the present invention may be mounted on existing feed grinding apparatus.

When powder coating needs to be screened and packaged, the power is switched on to enable the conveying and grinding device to start grinding, the electric driving module 43 drives the third gear 42 to rotate after the power is switched on, the third gear 42 drives the rotary cylinder 25 to rotate along the annular groove 3 on the outer stepped cylinder 2 through the toothed ring 26, and the rotary cylinder 25 drives the first rotary ring block 30, the second rotary ring block 31 and the rotary circular block 32 to synchronously rotate through the first connecting plate 28 and the second connecting plate 29.

Then the powder coating falls onto the rotary round block 32 which is positioned in the fine screen cylinder 33 and continuously rotates from the hopper 58, under the action of centrifugal force, the powder coating falling onto the rotary round block 32 moves to the periphery of the rotary round block 32 and is blocked by the fine screen cylinder 33, and the fine screen groove 34 on the fine screen cylinder 33 leaks the powder coating smaller than the width size of the powder coating; under the continuous action of centrifugal force, powder coating leaked from the fine screen cylinder 33 falls into a space between the inner stepped cylinder 4 and the outer stepped cylinder 2 from an annular gap between the first rotating ring block 30 and the rotating cylinder 25, and falls into a packaging bag sleeved at the lower end of the outer stepped cylinder 2 from the space between the inner stepped cylinder 4 and the outer stepped cylinder 2; powder coating is continuously added into the fine screen cylinder 33, and under the action of centrifugal force, the fine powder coating leaks through the fine screen groove 34 on the fine screen cylinder 33 and falls into a packaging bag sleeved at the lower end of the outer stepped cylinder 2 through the annular gap between the first rotating ring block 30 and the rotating cylinder 25 and the space between the inner stepped cylinder 4 and the outer stepped cylinder 2.

When the fine particle powder coating is basically screened and the thicker powder coating which cannot be leaked out in the fine screen drum 33 is accumulated to a certain amount, the self-locking motor 22 is controlled to start rotating through the remote control system, and the self-locking motor 22 drives the first gear 56 to rotate through the differential input shaft 57 on the differential mechanism 13; since the limit wheel 20 is limited by the limit block 18, the second gear 14 mounted on the second output shaft 53 does not rotate, and the power output by the self-locking motor 22 is transmitted to the second gear 14 engaged with the first rack 40 through the first gear 56, the gear barrel 51, the first bevel gear 54, the corresponding second bevel gear 52 and the first output shaft 55; the second gear 14 drives the first rack 40 to move upwards along the corresponding trapezoidal guide groove 10; the first rack 40 drives the coarse screen cylinder 38 to move upwards synchronously; when the first trapezoidal guide block 41 moves upwards along the corresponding trapezoidal guide groove 10 to the limit position, the first rack 40 and the coarse screen cylinder 38 stop moving under the limit of the trapezoidal guide groove 10; the whole power output from the self-locking motor 22 is transmitted to the second gear 14 meshed with the second rack 35 through the first gear 56, the gear barrel 51, the first bevel gear 54, the corresponding second bevel gear 52 and the second output shaft 53 in sequence; the second gear 14 drives the limiting wheel 20 to act on the upper inclined plane of the limiting block 18 through the second output shaft 53, so that the limiting block 18 is retracted inwards along the second limiting groove 17, the limiting spring 19 is compressed, the limiting block 18 removes the rotation limitation on the limiting wheel 20, the second gear 14 drives the second rack 35 to move downwards along the corresponding trapezoidal guide groove 10, the differential spring 37 is compressed, and the second rack 35 drives the fine screen cylinder 33 to move downwards synchronously; in the process of moving the fine screen drum 33 downwards, the powder coating left after being screened by the fine screen drum 33 loses the blockage of the fine screen drum 33 and moves towards the raised coarse screen drum 38 under the action of centrifugal force; when the fine screen cylinder 33 moves downwards to the limit, the limiting block 18 just enters the first limiting groove 21 on the limiting wheel 20 again, and the limiting block 18 limits the limiting wheel 20 again; and then the self-locking motor 22 is controlled to stop running, the motor shaft is self-locked, further the gear in the differential mechanism 13 does not rotate any more, finally the first rack 40 and the second rack 35 do not move any more, all the residual powder coating in the fine screen drum 33 moves to the coarse screen drum 38 under the action of centrifugal force, and a part of the residual powder coating moves to the rotary drum 25 through the coarse screen groove 39 on the coarse screen drum 38 and falls into the space between the inner stepped drum 4 and the outer stepped drum 2 from the annular gap between the first rotary ring block 30 and the rotary drum 25, and then falls into an empty packaging bag sleeved at the lower end of the outer stepped drum 2 from the space between the inner stepped drum 4 and the outer stepped drum 2.

When the powder coating in the coarse screen cylinder 38 can be completely screened out by the powder coating passing through the coarse screen groove 39, the particle size of the remaining powder coating is maximum; then the power supply is cut off to stop the operation of the electric driving module 43, and the rotary cylinder 25, the first rotary ring block 30, the second rotary ring block 31 and the rotary round block 32 stop rotating; the plug for blocking the through hole of the rotary round block 32 is taken off, and the residual powder coating in the coarse screen cylinder 38 falls into a new packaging belt sleeved at the lower end of the outer stepped cylinder 2 from the through hole of the rotary round block 32 through the discharging pipe 45 and the discharging hole 6 on the circular plate 5 of the base.

When the residual powder coating after sieving in the coarse sieving drum 38 is cleaned up, the self-locking motor 22 is controlled to rotate reversely by the control system, and the self-locking motor 22 drives the first gear 56 to rotate reversely through the differential input shaft 57; since the stopper wheel 20 is restricted by the stopper 18, the rotation of the second gear 14 coaxial with the stopper wheel 20 is restricted, and the second gear 14 on the first output shaft 55 is not restricted at this time; the first gear 56 is driven by the gear barrel 51, the first bevel gear 54 and the second bevel gear 52 to rotate reversely with the second gear 14 on the first output shaft 55, and the second gear 14 drives the coarse screen cylinder 38 to move downwards synchronously through the first rack 40; when the first rack 40 drives the coarse screen drum 38 to move downwards to the limit position, the trapezoidal guide groove 10 matched with the first trapezoidal guide block 41 on the first rack 40 forms a new limit to the rotation of the second gear 14 on the first output shaft 55; at this time, the first gear 56 which continues to rotate reversely under the driving of the reverse self-locking motor 22 drives the second gear 14 installed on the second output shaft 53 to rotate reversely through the gear barrel 51, the first bevel gear 54 and the second bevel gear 52, the limiting wheel 20 overcomes the limitation of the limiting block 18 to rotate, the second gear 14 on the second output shaft 53 drives the fine screen cylinder 33 to move upwards synchronously through the second rack 35, and the differential spring 37 releases energy; when the second rack 35 drives the fine screen cylinder 33 to move upwards synchronously to the initial position, the differential spring 37 restores to the original state, and the limiting block 18 enters the first limiting groove 21 on the limiting wheel 20 again to form new limiting on the limiting wheel 20; and then the self-locking motor 22 is controlled by the control system to stop running, and the screening of the powder coating is finished.

In conclusion, the invention has the beneficial effects that: the powder coating packaging machine can realize the screening of powder coatings from the hopper 58 by the fine screen cylinder 33 and the coarse screen cylinder 38 which are lifted alternately, the powder coatings mixed by the large particles and the small particles from the hopper 58 are classified by coarse and fine screening, and the screened powder coatings with different sizes are filled into different packaging bags, so the coating screening efficiency is improved; the traditional equipment for screening the powder coating needs to realize alternate lifting between the fine screen cylinder 33 and the coarse screen cylinder 38 through alternate work of two motors, but the powder coating packaging machine in the invention can respectively drive the coarse screen cylinder 38 and the fine screen cylinder 33 to mutually alternately lift through the first rack 40 and the second rack 35 only through one self-locking motor 22, so as to realize automatic screening of the powder coating, thereby reducing the production cost of the equipment, simplifying the control system of the motors and enabling the equipment to be operated more easily.

Claims (10)

1. A powder coating packagine machine of screening granule which characterized in that: the device comprises a blanking ring cylinder mechanism, a transmission mechanism, a rotary cylinder, a gear ring, a rotary positioning ring, a first connecting plate, a second connecting plate, a first rotary ring block, a second rotary ring block, a rotary round block, a fine screen cylinder, a second rack, a coarse screen cylinder, a first rack, a third gear, an electric drive module, a third fixed base, a blanking pipe and a fixed support, wherein the blanking ring cylinder mechanism internally provided with the transmission mechanism is fixedly arranged on the fixed support; a rotary cylinder with a rotary positioning ring fixedly arranged on the outer cylindrical surface of the lower end is arranged at the upper end of the blanking ring cylinder mechanism; the gear ring is fixedly arranged at the upper end of the rotary cylinder; two first connecting plates are uniformly arranged on the inner cylindrical surface at the upper end of the rotary cylinder along the circumferential direction, and a first rotary ring block, a second rotary ring block and a rotary circular block which are mutually sleeved are concentrically arranged at the lower end in the rotary cylinder through two second connecting plates which are symmetrically distributed and respectively connected with the two first connecting plates;

a fine screen cylinder with a plurality of fine screen grooves uniformly distributed along the circumferential direction on the outer cylindrical surface is embedded in an annular gap between the rotary circular block positioned at the central position and the second rotary ring block; the lower end of the fine screen cylinder is provided with a second rack matched with the transmission mechanism; a coarse screen cylinder with a plurality of coarse screen grooves uniformly distributed on the outer cylindrical surface along the circumferential direction is embedded in an annular gap between the second rotating ring block and the first rotating ring block; the lower end of the coarse screen cylinder is provided with a first rack matched with the transmission mechanism; a third gear meshed with the gear ring is arranged on an output shaft of an electric driving module which is arranged on the blanking ring cylinder mechanism through a third fixed base;

the blanking ring cylinder mechanism comprises an outer step cylinder, an inner step cylinder and a base circular plate, wherein the inner step cylinder is sleeved in the outer step cylinder, the inner cylindrical surface of the upper end of the inner step cylinder is circumferentially provided with a ring groove, the outer step cylinder and the inner step cylinder are fixedly connected through a plurality of symmetrically distributed connecting blocks, and the base circular plate, the central plate surface of which is provided with a blanking hole, is fixedly arranged in the inner step cylinder; the rotary positioning ring slides in the ring groove in a rotating way; the annular space between the outer stepped cylinder and the inner stepped cylinder corresponds to the annular interval between the rotary cylinder and the first rotary ring block; a discharging hole on the circular plate of the base is connected with a through hole in the center of the rotary circular block above the discharging hole through a discharging pipe;

the transmission mechanism comprises a second base shell, a differential mechanism, a second gear, a fixed block, a limiting spring, a limiting wheel and a self-locking motor, wherein the second base shell is fixedly arranged on a base circular plate, and the differential mechanism is arranged in the second base shell through a second fixed base; one output shaft of the differential mechanism is provided with a second gear meshed with the first rack, and the other output shaft is coaxially provided with a limiting wheel and a second gear meshed with the second rack; a fixing block fixedly arranged on the second base shell is provided with a circular groove, and the circular groove is in clearance fit with the limiting wheel; the limiting block is slidably arranged in a second limiting groove on the inner wall of the circular groove, and one end of the limiting block, which is provided with two inclined planes which are intersected up and down, is matched with the first limiting groove on the outer cylindrical surface of the limiting wheel; the self-locking motor is arranged on the second base shell through the first fixed base, and the output shaft of the self-locking motor is connected with the differential input shaft in the differential mechanism; the limiting spring is positioned in the second limiting groove and plays a reset function on the movement of the limiting block.

2. A screened particle powder coating packaging machine according to claim 1, wherein: the upper end face of the rotary round block, the upper end face of the first rotary ring block and the upper end face of the second rotary ring block are positioned in the same horizontal plane.

3. A screened particle powder coating packaging machine according to claim 1, wherein: in an initial state, the bottom surfaces of the fine screen grooves on the fine screen cylinder, the upper end surface of the coarse screen cylinder and the upper end surface of the rotary round block are positioned in the same horizontal plane.

4. A screened particle powder coating packaging machine according to claim 1, wherein: when the coarse screen cylinder moves upwards to the limit position along the annular gap between the first rotating ring block and the second rotating ring block, the bottom surface of the coarse screen groove on the coarse screen cylinder, the upper end surface of the fine screen cylinder and the upper end surface of the rotating circular block are positioned in the same horizontal plane.

5. A screened particle powder coating packaging machine according to claim 1, wherein: the two opposite side walls in the second base shell are respectively provided with a trapezoidal guide groove in the vertical direction, and one side wall which is not provided with the trapezoidal guide groove in the second base shell is provided with a through fourth shaft hole and a through fifth shaft hole.

6. A powder coating material wrapping machine for sifting particles according to claim 1 or 5, characterized in that: a first trapezoidal guide block is arranged on the side surface of the lower end of the first rack and slides in a corresponding trapezoidal guide groove on the inner wall of the second base shell; and a second trapezoidal guide block is arranged on the side surface of the lower end of the second rack and slides in another trapezoidal guide groove on the inner wall of the second base shell.

7. A screened particle powder coating packaging machine according to claim 1, wherein: the lower end of the second gear is provided with a differential spring, and the lower end of the differential spring is connected with the bottom in the second base shell; the differential spring is always in a compressed state.

8. A screened particle powder coating packaging machine according to claim 1, wherein: and an annular space is formed between the first rotating ring block and the inner cylindrical surface of the rotating cylinder.

9. A screened particle powder coating packaging machine according to claim 1, wherein: the upper end of the connecting block is a tip formed by two crossed inclined planes.

10. A powder coating material wrapping machine for sifting particles according to claim 1 or 5, characterized in that: the differential mechanism comprises a first base shell, a first shaft hole, a gear barrel, a second bevel gear, a second output shaft, a first bevel gear, a first output shaft, a first gear and a differential input shaft, wherein a second shaft hole and a third shaft hole which are the same with the central axis are formed in two opposite side surfaces of the first base shell, and a first shaft hole is formed in the side surface on which the third shaft hole is formed; the gear barrel with the outer cylindrical surface as the tooth surface is installed in the first base shell through a second output shaft, one end of the second output shaft extends out of the third shaft hole, the second output shaft is matched with the third shaft hole through a bearing, and the second output shaft is matched with the gear barrel through a bearing; a second bevel gear is fixedly arranged at one end of the second output shaft, which is positioned in the gear barrel; the two second bevel gears are uniformly arranged on the inner cylindrical surface of the gear barrel along the circumferential direction through corresponding shafts matched with the bearings, and the two second bevel gears are meshed with the first bevel gear on the second output shaft; a first bevel gear is fixedly arranged at one end of the first output shaft matched with the second shaft hole bearing and positioned in the first base shell, and the first bevel gear is meshed with the two second bevel gears; the central axis of the first shaft hole is superposed with the central axis of the second shaft hole; a first gear is fixedly arranged at one end, positioned in the first base shell, of the differential input shaft matched with the first shaft hole bearing, and the first gear is meshed with the gear barrel;

one end of a second output shaft provided with a second gear penetrates through the fourth shaft hole and extends out of the outer side of the second base shell, a limiting wheel is arranged at one end, positioned on the outer side of the second base shell, of the second output shaft, the second gear is in key fit with the second output shaft, and the limiting wheel is in key fit with the second output shaft; the differential input shaft passes through the fifth shaft hole and is connected with an output shaft of the self-locking motor.

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