CN111266209A - a sprayer - Google Patents

Abstract

The invention relates to a spraying machine, comprising a pump body, a reducer and a motor; the pump body is provided with a plunger cavity, a feed channel and a discharge channel communicated with the plunger cavity; a piston is arranged in the plunger cavity; The casing is fixedly connected with the pump body and the motor, an eccentric shaft is connected to the reducer, a roller bearing is arranged on the eccentric shaft, and a spring is sleeved on the piston to make the piston abut against the roller bearing; The spraying machine of the invention has the advantages of compact structure, high movement stability, convenient and safe operation, and long service life.

Description

a sprayer

technical field

The invention belongs to the technical field of spraying machines, and particularly relates to a spraying machine with high efficiency.

Background technique

The spraying machine is a special coating equipment using spraying technology. The inhaled paint is pressurized, and the paint is transported to the spray gun of the sprayer through the high-pressure hose, and the paint is instantly atomized by the spray gun and released to the surface of the object to be coated. Applicable to construction decoration, decoration and leather handbags, gift packaging, furniture, footwear, automobile manufacturing and other industries.

The existing spraying machine has a complex structure, is driven by a motor, has a large volume, and is unstable in operation. Such a working mode has low efficiency and high cost, and cannot meet the requirements of high production efficiency.

In view of the above problems, it is necessary to improve it.

SUMMARY OF THE INVENTION

In order to overcome the above-mentioned defects in the prior art, the present invention provides a spraying machine with a simple structure, which improves the running efficiency of the spraying machine and ensures the smooth running of the spraying machine.

In order to achieve the above purpose, the technical scheme adopted in the present invention is: a spraying machine, comprising a pump body, a reducer and a motor; the pump body has a plunger cavity, a feed channel and a discharge channel communicated with the plunger cavity; A piston is arranged in the plunger cavity; the casing of the reducer is fixedly connected with the front cover and the motor, an eccentric shaft is connected to the reducer, a roller bearing is arranged on the eccentric shaft, and a sleeve is sleeved on the piston to make the piston abut against the roller bearing the spring.

As a preferred solution of the present invention, the speed reducer includes a pump body and a speed reduction mechanism, the pump body is provided with a working chamber inside, the working chamber is provided with a speed reduction mechanism, and a motor is fixedly installed on the side wall of the pump body , the pump body is detachably equipped with a motor flange, the motor flange is detachably mounted with a motor shaft, the motor shaft and the motor flange are coaxially arranged, the motor shaft is fixedly connected with the output end of the motor, and the end of the motor shaft is formed There are input gears.

As a preferred solution of the present invention, a gear shaft is connected to one side of the input gear, and both ends of the gear shaft are respectively connected to the housing through a first bearing for rotation; a pinion gear and an adjustment gear are formed on the gear shaft; The pinion gear meshes with the input gear; one end of the eccentric shaft is fixedly sleeved with a large gear, which meshes with the adjusting gear; the pinion gear and the input gear are both helical gears.

As a preferred solution of the present invention, both ends of the eccentric shaft are rotatably connected to the housing through a second bearing respectively; wherein the large gear is located at the outer end of the second bearing.

As a preferred solution of the present invention, the motor includes a casing, a motor shaft and a stator assembly arranged inside the casing; a rotor is fastened on the motor shaft; the stator assembly is coaxially arranged with the rotor, and the stator assembly is sleeved on the rotor The stator assembly includes a stator iron core fastened on the inner wall of the casing, and a stator insulation layer sleeved in the stator iron core; a shaft hole is formed on the stator iron core, and the rotor is located in the inside the shaft hole.

As a preferred solution of the present invention, the stator core includes a main circular cylinder with a shaft hole formed thereon, and the inner circumferential wall surface of the main circular cylinder is equally spaced with a plurality of sets along the direction of its generatrix. The elongated main T-shaped block used for winding the coil; correspondingly, a elongated positioning slot suitable for the elongated main T-shaped block is formed on the insulating layer of the stator, and the elongated main T-shaped The block is assembled in the elongated positioning groove.

As a preferred solution of the present invention, a left positioning plate and a right positioning plate are formed on both sides of the long positioning groove; the left positioning plate and the right positioning plate are consistent with the inner wall plate structure of the long main T-block. ; The stator insulating layer includes left stator slot insulation and right stator slot insulation.

As a preferred solution of the present invention, a left positioning ring and a right positioning ring are formed on the outer sides of the left stator slot insulation and the right stator slot insulation respectively; the left stator slot insulation and the right stator slot insulation are sleeved in the stator iron core, and the left stator slot insulation The positioning ring and the right positioning ring are used to fasten the insulation of the left stator slot and the insulation of the right stator slot on the stator iron core.

As a preferred solution of the present invention, the rotor includes a cylindrical silicon steel piece fastened on the motor shaft, and a bar-shaped magnetic steel fastened in a square groove of the silicon steel piece.

As a preferred solution of the present invention, the casing includes a cylindrical installation cylinder with openings at both ends, and a circular front end cover coaxially provided at one end opening of the installation cylinder is detachably connected and matched with it. A circular rear end cover is coaxially arranged at the opening of the other end; the rear end cover is fixedly connected with the casing and is integrally formed, and a number of air diffusing grooves are formed on the rear end cover; the motor shaft is rotatably connected to the middle of the rear end cover.

The beneficial effects of the present invention are:

Compared with the prior art, the spraying machine of the present invention has the advantages of compact structure, high movement stability, convenient and safe operation, long service life and the like.

Description of drawings

1 is a schematic structural diagram of an embodiment of the present invention;

2 is a schematic structural diagram of an embodiment of the present invention after removing the casing of the pump body;

3 is a schematic structural diagram of an embodiment of the present invention;

Fig. 4 is the connection and assembly diagram of the speed reduction mechanism and the power device according to the embodiment of the present invention;

5 is a schematic structural diagram of a deceleration mechanism according to an embodiment of the present invention;

FIG. 6 is a side view of the deceleration mechanism according to the embodiment of the present invention;

7 is a schematic structural diagram of a motor according to an embodiment of the present invention;

8 is a schematic diagram of a casing structure of a motor according to an embodiment of the present invention;

9 is a front view of a motor according to an embodiment of the present invention;

Figure 10 is an A-A sectional view of an embodiment of the present invention;

FIG. 11 is a side view of a motor according to an embodiment of the present invention;

12 is a B-B cross-sectional view of an embodiment of the present invention;

13 is an exploded view of the motor according to the embodiment of the present invention;

Reference symbols in the figure: casing 1, motor shaft 2, rotor 3, stator assembly 4, long strip-shaped main T-block 5, long strip-shaped positioning groove 6, left positioning plate 7, right positioning plate 8, fan blade 9 , front cover 10, reducer 11, motor 12, feed channel 13, discharge channel 14, piston 15, spring 16, pump body 20, reduction mechanism 21, working chamber 22, motor flange 24, input gear 25, silicon steel 31, first magnetic ring 32, gear shaft 40, first bearing 41, pinion 42, adjusting gear 43, stator insulating layer 44, stator core 45, eccentric shaft 50, large gear 51, second bearing 52, oil seal 53, eccentric shaft 54, roller bearing 55, mounting cylinder 101, front end cover 102, rear end cover 103, air diffuser 104, left stator slot insulation 401, right stator slot insulation 402, left positioning ring 403, right positioning Circle 404.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example 1:

As shown in Figures 1-2, a spraying machine provided in this embodiment includes a pump body 20, a reducer 11 and a motor 12; the pump body 20 has a plunger cavity and a feed channel 13 that communicates with the plunger cavity. and discharge channel 14; a piston 15 is arranged in the plunger cavity; the casing of the reducer 11 is fixedly connected with the front cover 10 and the motor 12, an eccentric shaft 50 is connected to the reducer 11, and a roller bearing 55 is arranged on the eccentric shaft 50 , the piston 15 is sleeved with a spring 16 that makes the piston 15 abut against the roller bearing 55; the motor 12 drives the eccentric shaft 50 to rotate once, and the piston 15 reciprocates once.

An oil seal 53 and a bearing are arranged between the piston 15 and the pump body 20 to ensure sealing and movement stability. When the plunger pump is running, the piston 15 reciprocates in the axial direction, and the volume of the plunger cavity reciprocates. When the volume increases, the plunger cavity generates negative pressure, the discharge joint of the discharge channel 14 is automatically closed, and the feed channel 13 The feed joint is automatically opened, and the medium such as paint or paint enters the plunger cavity. When the volume is reduced, the plunger cavity generates positive pressure, the discharge joint is automatically opened, the feed joint is automatically closed, and the medium is ejected through the discharge joint.

Example 2:

The pump body 20 of the above-mentioned embodiment has a plunger cavity and a feed channel 13 communicated with the plunger cavity. A pressure cavity is provided between the plunger cavity and the feed channel 13 communicated with the plunger cavity. The diaphragm assembly is installed in the cavity to form a diaphragm pump structure; the piston 15 reciprocates in the axial direction, and the volume of the plunger cavity reciprocates. At the same time, a negative pressure is generated in the chamber, the discharge joint of the discharge channel 14 is automatically closed, the feed joint of the feed channel 13 is automatically opened, and the medium such as paint or paint enters the diaphragm and the pressure chamber. inside the cavity. When the volume is reduced, the plunger cavity generates positive pressure, which causes the diaphragm to protrude upward, and at the same time, a positive pressure is generated in the diaphragm chamber, the discharge joint is automatically opened, the feed joint is automatically closed, and the medium It is sprayed through the discharge joint.

As shown in FIGS. 3-6 , the speed reducer 11 includes a pump body 20 and a speed reduction mechanism 21 . The pump body 20 is provided with a working chamber 22 inside, and the working chamber 22 is provided with a speed reduction mechanism 21 . The motor 12 is fixedly installed on the wall. In this embodiment, the motor 12 is a brushless motor. The pump body 20 is detachably assembled with a motor flange 24, and the motor flange 24 is detachably mounted with a motor shaft 2 and a motor shaft 2 It is coaxially arranged with the motor flange 24, the motor shaft 2 is fixedly connected with the output end of the motor 12, the pump body of the present invention is detachably equipped with a motor flange, and the motor flange is detachably installed with a motor shaft. When the device is connected with different types of motors, the size of the output shaft of the motor changes, and the input gear of other types is replaced to make the center hole of the input gear fit with the output shaft of the motor. Therefore, the reduction gear of the present invention has universal applicability without Equipped with multiple reduction gears due to motor model issues.

The speed reducer provided in the invention realizes full protection of the motor and the spraying machine, thereby ensuring the smooth running of the spraying machine, prolonging the service life of the spraying machine and improving the working efficiency.

Specifically, an input gear 25 is formed at the end of the motor shaft 2, a gear shaft 40 is connected to one side of the input gear 25, and both ends of the gear shaft 40 are rotatably connected to the housing 20 through the first bearing 41; The transmission of the upper input gear 25 and the motor shaft 2 makes the pinion 42 mesh with the input gear 25; zero-gap transmission and high-precision, high-stability torque transmission are realized, and good practical performance is achieved.

The pinion gear 42 and the adjustment gear 43 are formed on the gear shaft 40 .

The gear shaft 40 and the pinion gear 42 are connected by interference fit; the connection strength of the pinion gear 42 on the gear shaft 40 is improved, and the pinion gear 42 meshes with the input gear 25; the pinion gear 42 and the input gear 25 are both helical gears; Generates large vibrations and therefore low noise. High bearing capacity, the effective tooth width of the helical gear is larger, and the helical gear has a stronger bearing capacity than the spur gear.

In the present invention, the pinion gear and the input gear mesh and cooperate to transmit power, which can conveniently realize the deceleration and torque increase under different transmission ratios; The influence of the movement error in the axis direction of the planetary gear on the transmission can be reduced, and the design and installation are more convenient and simple.

The reducer also includes an eccentric shaft 50, one end of the eccentric shaft 50 is fixedly sleeved with a large gear 51, and the large gear 51 meshes with the adjusting gear 43; the two ends of the eccentric shaft 50 are respectively connected with the pump body 20 through the second bearing 52 in rotation; wherein , the large gear 51 is located on the eccentric shaft 50 at the outer end of the second bearing 52 and is provided with an oil seal 53, and the oil seal 53 is located between the two second bearings 52; the eccentric shaft body 54 on the eccentric shaft 50 is provided with a roller bearing 55; During the operation of the reducer, the eccentric shaft 50 is greatly simplified, and at the same time, the machining of the eccentric shaft 50 is labor-saving, time-saving, and easy to assemble, which reduces the manufacturing cost of the eccentric shaft 50, thereby improving the production efficiency.

As shown in Figures 7-13, the motor 12 includes a casing 1, a motor shaft 2 and a stator assembly 4 disposed inside the casing 1; the rotor 3 is fastened on the motor shaft 2; the stator assembly 4 is coaxially arranged with the rotor 3 and The stator assembly 4 is sleeved on the outside of the rotor 3; the stator assembly 4 includes a stator iron core 45 fastened on the inner wall of the casing 1, and a stator insulating layer 44 sleeved in the stator iron core 45; the stator insulation A shaft hole is formed on the layer 44, and the rotor 3 is located in the shaft hole; the brushless motor of the present invention has the advantages of simple and compact structure and convenient installation; the stator assembly includes a stator core fastened on the inner wall of the casing , The stator insulation layer sleeved in the stator iron core has the advantage of convenient installation; compared with the traditional brushless motor, the structure of the present invention can greatly reduce the length of the end of the stator winding, thereby reducing the copper loss, which is beneficial to Efficiency improvement.

The stator core 45 includes a main circular cylinder formed with the shaft hole, and a plurality of long strips arranged along the busbar direction for winding coils are distributed at equal intervals on the inner circumferential wall of the main circular cylinder. Correspondingly, the stator insulating layer 44 is formed with a long positioning groove 6 which is adapted to the long main T-block 5, and the long main T-block 5 is assembled in the In the elongated positioning slot 6; a plurality of elongated main T-shaped blocks 5 are arranged at equal distances, and a coil slot is formed between adjacent elongated main T-shaped blocks 5; because the winding coils of the present invention are independent, There is a slot spacing, which enables the machine to automatically roll off the line during the manufacturing process, thus simplifying the manufacturing process and saving costs.

The stator insulation layer 44 includes left stator slot insulation 401 and right stator slot insulation 402; the stator insulation layer of the present invention includes left stator slot insulation and right stator slot insulation; the structure design is ingenious, the principle is simple, the production cost is low, the maintenance is convenient, and the stator The insulating layer is sleeved on the stator core, and the armature winding of the stator is loaded with voltage. By changing the magnetic flux between the magnetic field generated by the control voltage on the armature winding and the magnetic field generated by the permanent magnet, the torque of the rotor part is changed. , Improve the speed of the motor, up to 10000-30000rpm.

Specifically, a left positioning plate 7 and a right positioning plate 8 are formed on both sides of the elongated positioning groove 6; the left positioning plate 7 and the right positioning plate 8 are consistent with the inner wall plate structure of the elongated main T-block 5; so that The structure in which the stator insulating layer 44 is sleeved on the stator iron core 45 is more compact, and the left stator slot insulation 401 and the right stator slot insulation 402 are respectively formed with a left positioning ring 403 and a right positioning ring 404 outside; the left stator slot insulation 401 and the right stator The slot insulation 402 is sleeved in the stator core 45, and the left positioning ring 403 and the right positioning ring 404 are used to fasten the left stator slot insulation 401 and the right stator slot insulation 402 on the stator core 45; There is no coupling between them, and the mutual inductance is very small, so that each phase can be independently controlled and the controllability of the motor is improved.

The rotor 3 includes a cylindrical silicon steel piece 31 fastened on the motor shaft 2, and a bar-shaped magnetic steel 32 fastened in the square groove of the silicon steel piece 31, wherein the bar-shaped magnetic steel 32 is fastened on the the silicon steel piece 31; in this solution, the silicon steel piece 31 is formed by stacking a number of silicon steel sheets, and a plurality of square grooves distributed along the axial direction are formed on the round end surface of the silicon steel piece 31, and the square grooves are used for Install bar magnets.

The casing 1 includes an installation cylinder 101 which is cylindrical and arranged with openings at both ends. One end of the installation cylinder 101 is coaxially provided with a circular front end cover 102 that is detachably connected with it, and the other end is coaxially arranged at the opening. There is a circular rear end cover 103; wherein, a bearing hole for accommodating a bearing is formed on the rear end cover 103, a bearing is arranged between the bearing and the end of the bearing hole, and the bearing has an adjustment shaft A spacer is also arranged between the bearing and the end of the bearing hole for the effect of the clearance.

The rear end cover 103 is fixedly connected with the casing 1 and is integrally formed, which improves the structural strength and overall firmness of the entire casing 1 and further ensures the safety in use; a number of ventilation slots 104 are formed on the rear end cover 103; the motor shaft 2 rotates Connected to the middle of the rear end cover 103; improves the overall heat dissipation performance of the brushless motor.

The front end of the motor shaft 2 is sleeved with a fan blade 9 , the fan blade 9 is driven to rotate by the motor shaft 2 , and the fan blade 9 is assembled between the circular front end cover 102 and the casing 1 .

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention; thus , the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the reference numbers in the figure are used more in this article: casing 1, motor shaft 2, rotor 3, stator assembly 4, long strip main T-block 5, long strip positioning groove 6, left positioning plate 7, right Positioning plate 8, fan blade 9, front cover 10, speed reducer 11, motor 12, feed channel 13, discharge channel 14, piston 15, spring 16, pump body 20, speed reduction mechanism 21, working chamber 22, motor flange 24, input gear 25, silicon steel 31, bar magnet 32, gear shaft 40, first bearing 41, pinion 42, adjusting gear 43, stator insulating layer 44, stator core 45, eccentric shaft 50, large gear 51 , the second bearing 52, the oil seal 53, the eccentric shaft body 54, the roller bearing 55, the mounting cylinder 101, the front end cover 102, the rear end cover 103, the ventilation slot 104, the left stator slot insulation 401, the right stator slot insulation 402, the left Terms such as positioning circle 403, right positioning circle 404, etc., do not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the present invention; it is contrary to the spirit of the present invention to interpret them as any kind of additional limitation.

Claims (10)

1. A spraying machine is characterized in that: comprising a pump body (20), a reducer (11) and a motor (12); the pump body (20) has a plunger cavity, a feed channel communicated with the plunger cavity (13) and a discharge channel (14); a piston (15) is arranged in the plunger cavity; the housing of the reducer (11) is fixedly connected with the front cover (10) and the motor (12), and the reducer (11) is fixedly connected An eccentric shaft (50) is connected, a roller bearing (55) is arranged on the eccentric shaft (50), and a spring (16) is sleeved on the piston (15) to make the piston (15) abut against the roller bearing (55). 2. A spraying machine according to claim 1, characterized in that: the speed reducer (11) comprises a pump body (20) and a speed reduction mechanism (21), and the inside of the pump body (20) is provided with a working A cavity (22), a speed reduction mechanism (21) is arranged in the working cavity (22), a motor (12) is fixedly installed on the side wall of the pump body (20), and a motor (12) is detachably assembled on the pump body (20) A flange (24), a motor shaft (2) is detachably mounted on the motor flange (24), the motor shaft (2) is coaxially arranged with the motor flange (24), and the motor shaft (2) is connected to the motor (12). The output end is fixedly connected, and an input gear (25) is formed at the end of the motor shaft (2). 3. A spraying machine according to claim 2, characterized in that: one side of the input gear (25) is connected with a gear shaft (40), and both ends of the gear shaft (40) pass through the first bearing (40) respectively. 41) is rotatably connected with the housing (20); a pinion (42) and an adjusting gear (43) are formed on the gear shaft (40); the pinion (42) meshes with the input gear (25); the eccentric shaft (50) ) is fixedly sleeved with a large gear (51), and the large gear (51) meshes with the adjusting gear (43); the pinion (42) and the input gear (25) are both helical gears. 4. A spraying machine according to claim 3, characterized in that: the two ends of the eccentric shaft (50) are respectively rotatably connected with the pump body (20) through the second bearing (52); wherein, the large gear (50) 51) is located at the outer end of the second bearing (52). 5. A spraying machine according to claim 1 or 2, characterized in that: the motor (12) comprises a casing (1), a motor shaft (2) disposed inside the casing (1), and a stator assembly (4); the rotor (3) is fastened on the motor shaft (2); the stator assembly (4) is coaxially arranged with the rotor (3) and the stator assembly (4) is sleeved on the outside of the rotor (3); the stator The assembly (4) comprises a stator iron core (45) fastened on the inner wall of the casing (1), and a stator insulating layer (44) sleeved in the stator iron core (45); the stator insulating layer (44) A shaft hole is formed on the upper part, and the rotor (3) is located in the shaft hole. 6 . The spraying machine according to claim 5 , wherein the stator iron core ( 45 ) comprises a main circular cylindrical body formed with a shaft hole, and the inner circumferential wall surface of the main circular cylindrical body is 6 . There are a plurality of elongated main T-blocks (5) arranged along its busbar direction and used for winding coils at equal intervals; correspondingly, the stator insulating layer (44) is formed with elongated main T-blocks (5). The elongated positioning groove (6) is adapted to the mold block (5), and the elongated main T-shaped block (5) is assembled in the elongated positioning groove (6). 7. A spraying machine according to claim 6, characterized in that: a left positioning plate (7) and a right positioning plate (8) are formed on both sides of the elongated positioning groove (6); (7) and the right positioning plate (8) are consistent with the inner wall plate structure of the elongated main T-block (5); the stator insulating layer (44) includes a left stator slot insulation (401) and a right stator slot insulation ( 402). 8. A spraying machine according to claim 7, characterized in that: a left locating ring (403) and a right locating ring (403) and a right locating ring ( 404); the left stator slot insulation (401) and the right stator slot insulation (402) are sleeved in the stator core (45), and the left positioning ring (403) and the right positioning ring (404) are used to insulate the left stator slot (404). 401) and the right stator slot insulation (402) are fastened to the stator core (45). 9. A spraying machine according to claim 5, characterized in that: the rotor (3) comprises a cylindrical silicon steel piece (31) fastened on the motor shaft (2), and fastened on the silicon steel The bar-shaped magnetic steel (32) in the square groove of the piece (31), wherein the bar-shaped magnetic steel (32) is fastened on the silicon steel piece (31). 10. A spraying machine according to claim 9, characterized in that: the casing (1) comprises a cylindrical mounting cylinder (101) arranged with openings at both ends, and the mounting cylinder (101) A circular front end cover (102) which is detachably connected and matched with the opening at one end is coaxially provided, and a circular rear end cover (103) is coaxially provided at the opening at the other end; 1) Fixed connection, integral molding, a plurality of ventilation grooves (104) are formed on the rear end cover (103); the motor shaft (2) is rotatably connected to the middle of the rear end cover (103).

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