Flour mill for hot melt adhesive production

Abstract

The utility model provides a pulverizer for hot melt adhesive production, which relates to the technical field of grinding, overcomes the defects of high manual labor intensity and low grinding efficiency of the existing pulverizer, and comprises a case and a primary crushing mechanism arranged on one side of the top of the case, and a discharge channel is fixedly arranged at the bottom of the inner wall of the case; a discharging channel is formed in the bottom face of the machine box, the discharging end of the discharging channel fixedly penetrates out of the bottom face of the machine box, a grinding cylinder is vertically fixed to the top face of an inner cavity of the machine box, a screen with the rectangular section is arranged at the bottom of the grinding cylinder in a sliding mode, and a secondary smashing mechanism used for secondarily smashing hot melt adhesive particles is arranged in the grinding cylinder. A first driving part used for providing power for the rotating rod is arranged on one side of the machine box, an anti-blocking part used for preventing hot melt adhesive powder from blocking the screen is further arranged on the transverse plate, and by arranging the secondary smashing mechanism and the anti-blocking part, the manual labor intensity can be effectively reduced, and the grinding efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding, and particularly relates to a grinding machine for hot melt adhesive production. Background Art

[0002] Hot melt adhesive is a plastic adhesive. Its physical state changes with temperature within a certain temperature range, while its chemical properties remain unchanged. It is non-toxic and odorless, and is an environmentally friendly chemical product. It is solid, easy to package, transport, store, solvent-free, pollution-free, and non-toxic; it is popular because of its simple production process, high added value, high bonding strength, and fast speed. When hot melt adhesive is used again, it needs to be ground into powder using a grinder.

[0003] When using an existing hot melt adhesive grinding machine, hot melt adhesive particles are usually directly put into the grinding machine for grinding. The particle sizes of the powders obtained after grinding are different, and the powder needs to be manually put into the grinding machine again for secondary grinding, which not only increases the labor intensity but also easily leads to poor powder quality. Some grinding machines intercept powders that do not meet the standards by setting a screen. However, after the screen has been sifted for a long time, the unqualified powder accumulated on the screen will block the screen, thereby slowing down the screening speed of the screen, further affecting the powder output efficiency of the grinding machine.

[0004] Therefore, how to reduce the intensity of manual labor and improve grinding efficiency is a problem that we urgently need to solve. Utility Model Content

[0005] The purpose of the utility model is to provide a grinding machine for hot melt adhesive production to solve the above problems existing in the prior art.

[0006] According to the above purpose, the basic technical scheme of the utility model is: a grinding machine for hot melt adhesive production, comprising a chassis and a preliminary crushing mechanism arranged on one side of the top of the chassis, a discharge channel is fixedly arranged at the bottom of the inner wall of the chassis, and the discharge end of the discharge channel is fixedly passed through the bottom surface of the chassis, a grinding cylinder is vertically fixed on the top surface of the inner cavity of the chassis, a screen with a rectangular cross section is slidably arranged at the bottom of the grinding cylinder, and a secondary crushing mechanism for secondary crushing of hot melt adhesive particles is arranged inside the grinding cylinder;

[0007] The secondary crushing mechanism includes a rotating rod rotatably arranged in the middle of the grinding cylinder, a horizontal plate vertically fixed to the end of the rotating rod, and a plurality of blades fixed on the rod body of the rotating rod. A plurality of grinding balls are rollingly embedded in the bottom surface of the horizontal plate, and the plurality of grinding balls are in contact with the screen. A first driving component for providing power to the rotating rod is arranged on one side of the chassis, and an anti-blocking component for preventing hot melt adhesive powder from blocking the screen is also arranged on the horizontal plate.

[0008] Furthermore, the first driving component includes a bidirectional motor installed on one side of the chassis, a first pulley fixedly connected to the output shaft at one end of the bidirectional motor, and a transmission shaft rotatably arranged on the inner wall of the top end of the chassis, one end of the transmission shaft is fixedly connected to a second pulley, the other end of the transmission shaft penetrates into the interior of the grinding cylinder and is fixedly connected to the rotating rod, and a transmission belt is connected between the first pulley and the second pulley.

[0009] Furthermore, connecting plates are slidably provided in the inner walls on both sides of the chassis, and the two connecting plates are respectively fixedly connected to the two sides of the screen. The other ends of the two connecting plates pass through the side walls of the chassis to connect to the limiting blocks, and a second driving component that causes the screen to slide back and forth is provided below the bidirectional motor.

[0010] Furthermore, the second driving component includes a turntable fixedly connected to the output shaft at the other end of the bidirectional motor, a cam shaft is fixedly connected to the edge of the bottom surface of the turntable, a pull rod is provided on the cam shaft, one end of the pull rod is rotatably connected to the cam shaft, and the other end of the pull rod is hinged to the side wall of one of the two limit blocks.

[0011] Furthermore, the anti-blocking component includes two transverse air passages symmetrically arranged in the inner wall of the transverse plate, a connecting air passage connected to the two transverse air passages is also arranged in the inner wall of the transverse plate, a plurality of air nozzles are equidistantly fixed on both sides of the bottom surface of the transverse plate, the air nozzles are connected to the transverse air passages, an air supply passage connected to the connecting air passage is vertically arranged in the inner wall of the rotating rod, and a pneumatic rotary joint connected to the air supply passage is rotatably connected to the top of the transmission shaft.

[0012] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0013] 1. The utility model product arranges a secondary crushing mechanism in the grinding cylinder. After the hot melt adhesive particles are crushed by the primary crushing mechanism, the crushed powder enters the grinding cylinder through the feed channel. The rotating rod and the cross bar in the secondary crushing mechanism continuously rotate in the grinding cylinder, and the blade continuously crushes the powder in the grinding cylinder. The crushed powder falls onto the screen, and the powder that meets the standards is screened out and discharged through the discharge port. The grinding balls grind the powder that does not meet the standards and remains on the screen again, thereby avoiding the manual re-feeding of the powder into the grinding mill for secondary grinding, reducing the labor intensity and improving the quality of the powder output.

[0014] 2. The transverse plate of the utility model product is also provided with an anti-clogging component for preventing hot melt adhesive powder from clogging the screen. When the screen is clogged, the compressed air is connected to the pneumatic rotary joint, and the compressed air enters the air supply channel along the pneumatic rotary joint and is diverted into the transverse air channel through the connecting air channel and finally ejected from the air nozzle. Combined with the rotation of the rotating rod and the transverse plate, the powder stuck in the sieve holes of the screen can be cleaned to prevent the screen from being clogged and causing the screening speed of the screen to slow down, affecting the powder output efficiency of the grinding mill. At the same time, when the transmission shaft rotates, the connection part of the pneumatic rotary joint and the transmission shaft will rotate together with the transmission shaft, and the connection part of the pneumatic rotary joint and the compressed air pipeline will be fixed, which can effectively prevent the compressed air pipeline from being entangled on the transmission shaft and causing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model product;

[0016] Figure 2 It is a cross-sectional view of the crushing box of the utility model product;

[0017] Figure 3 This is a partial cross-sectional view of an embodiment of the utility model product.

[0018] Figure 4 This is a new utility model product Figure 1 The enlarged diagram of point A in the middle;

[0019] Figure 5 This is a new utility model product Figure 3 The enlarged diagram of point B in the middle;

[0020] Figure 6 This is a structural schematic diagram of the secondary crushing mechanism of the utility model product;

[0021] Figure 7 This is a new utility model product Figure 6 The enlarged diagram of the middle C;

[0022] In the figure:

[0023] 1. Chassis; 2. Feed hopper; 3. Crushing box; 4. Crushing roller; 5. Feed channel; 6. Servo motor; 7. Grinding cylinder; 8. Rotating rod; 9. Blade; 10. Horizontal plate; 11. Grinding ball; 12. Screen; 13. Bidirectional motor; 14. First pulley; 15. Transmission shaft; 16. Second pulley; 17. Rotating belt; 18. Turntable; 19. Cam shaft; 20. Pull rod; 21. Connecting plate; 22. Limit block; 23. Pneumatic rotary joint; 24. Air nozzle; 25. Horizontal airway; 26. Connecting airway; 27. Air transmission duct; 28. Discharge channel. DETAILED DESCRIPTION

[0024] Combination Figures 1 to 6 , is a schematic diagram of the structure of an embodiment of a hot melt adhesive production mill of the utility model, the hot melt adhesive production mill comprises a chassis 1 and a preliminary crushing mechanism arranged on one side of the top of the chassis 1, a discharge channel 28 is fixedly arranged at the bottom of the inner wall of the chassis 1, and the discharge end of the discharge channel 28 is fixedly passed through the bottom surface of the chassis 1;

[0025] The preliminary crushing mechanism includes a crushing box 3 fixedly connected to one side of the top surface of the chassis 1, two crushing rollers 4 symmetrically arranged inside the crushing box 3, and two servo motors 6 fixedly installed on one side of the outer wall of the crushing box 3. The two servo motors 6 correspond to the two crushing rollers 4 one by one, and the output shaft of the servo motor 6 penetrates into the crushing box 3 and is fixedly connected to one end of the crushing roller 4. The top surface of the crushing box 3 is fixedly connected to the feed hopper 2, and the top inner wall of the chassis 1 is fixedly penetrated with a feed channel 5, and one end of the feed channel 5 is connected to the bottom of the crushing box 3.

[0026] Through the setting of the preliminary crushing mechanism, the feed channel 5, the feed hopper 2 and the discharge channel 28, when grinding, the servo motor 6 is turned on, the servo motor 6 drives the crushing roller 4 to rotate, and then the hot melt adhesive particles are poured into the feed hopper 2, and the hot melt adhesive particles enter the crushing box 3 through the feed hopper 2. After being crushed by the crushing roller 4, they enter the chassis 1 through the feed channel 5 and are discharged through the discharge channel 28, thereby achieving grinding.

[0027] Since the hot melt adhesive particles are of different sizes, the particle sizes of the powder obtained after crushing are different, and the powder needs to be manually put into the crushing box 3 again for secondary grinding, which not only increases the labor intensity but also easily leads to poor powder quality.

[0028] To solve the above problems, refer to Figure 3 As shown, it is worth noting that a grinding cylinder 7 is vertically fixed to the top surface of the inner cavity of the chassis 1, a screen 12 with a rectangular cross section is slidably provided at the bottom of the grinding cylinder 7, a secondary crushing mechanism for secondary crushing of hot melt adhesive particles is provided inside the grinding cylinder 7, and one side wall of the grinding cylinder 7 is connected to the other end of the feed channel 5;

[0029] The secondary crushing mechanism includes a rotating rod 8 rotatably arranged in the middle of the grinding cylinder 7, a horizontal plate 10 vertically fixed to the end of the rotating rod 8, and a plurality of blades 9 fixed to the body of the rotating rod 8. A plurality of grinding balls 11 are rotatably embedded in the bottom surface of the horizontal plate 10, and the plurality of grinding balls 11 are in contact with a screen 12.

[0030] Through the arrangement of the grinding cylinder 7, the secondary crushing mechanism and the screen 12, after the hot melt adhesive particles are crushed by the primary crushing mechanism, the crushed powder enters the grinding cylinder 7 through the feed channel 5, the rotating rod 8 and the cross bar 10 in the secondary crushing mechanism continuously rotate in the grinding cylinder 7, the blade 9 continuously crushes the powder in the grinding cylinder 7, the crushed powder falls onto the screen 12, the powder that meets the standards is screened out and discharged through the discharge channel 28, the grinding balls 11 grind the powder that does not meet the standards remaining on the screen 12 again, avoiding the manual re-feeding of the powder into the grinding mill for secondary grinding, reducing the labor intensity and improving the quality of the powder output.

[0031] Further, refer to Figure 1 and Figure 3 As shown, it is worth noting that a first driving component for providing power to the rotating rod 8 is provided on one side of the chassis 1;

[0032] The first driving component includes a bidirectional motor 13 installed on one side of the chassis 1, a first pulley 14 fixedly connected to the output shaft at one end of the bidirectional motor 13, and a transmission shaft 15 rotatably arranged on the inner wall of the top end of the chassis 1, one end of the transmission shaft 15 is fixedly connected to a second pulley 16, the other end of the transmission shaft 15 penetrates into the interior of the grinding cylinder 7 and is fixedly connected to the rotating rod 8, and a transmission belt 17 is connected between the first pulley 14 and the second pulley 16;

[0033] Through the setting of the first driving component, when grinding, the bidirectional motor 13 is turned on, and the output shaft at one end of the bidirectional motor 13 drives the first pulley 14 to rotate, and the second pulley 16 is driven to rotate under the action of the transmission belt 17, so that the transmission shaft 15 drives the rotating rod 8 and the cross bar 10 to rotate continuously in the grinding cylinder 7, so as to realize continuous crushing and grinding of the powder in the grinding cylinder 7.

[0034] Further, refer to Figure 1 , Figure 4 and Figure 5 As shown, it is worth noting that connecting plates 21 are slidably provided in the inner walls on both sides of the chassis 1, and the two connecting plates 21 are respectively fixedly connected to the two sides of the screen 12, and the other ends of the two connecting plates 21 pass through the side wall of the chassis 1 to connect the limited block 22, and a second driving component for causing the screen 12 to slide back and forth is provided below the bidirectional motor 13;

[0035] The second driving component includes a turntable 18 fixedly connected to the output shaft at the other end of the bidirectional motor 13, a cam 19 fixedly connected to the edge of the bottom surface of the turntable 18, a pull rod 20 is provided on the cam 19, one end of the pull rod 20 is rotatably connected to the cam 19, and the other end of the pull rod 20 is hinged to the side wall of one of the two limit blocks 22.

[0036] Through the setting of the second driving component, during grinding, the bidirectional motor 13 is turned on to cause the turntable 19 to rotate, and the turntable 19 causes the cam 19 to rotate, thereby driving the pull rod 20 to reciprocate, and the pull rod 20 acts on the connecting plate 21 to drive the screen 12 to reciprocate at the bottom of the grinding cylinder 7. The reciprocating motion of the screen 12 accelerates the efficiency of powder screening and further improves the powder output efficiency. When the connecting plate 21 acts on the screen 12 to reciprocate, the limit block 22 can limit the movement trajectory of the connecting plate 21 to prevent the connecting plate 21 from sliding off the inner wall of the chassis 1.

[0037] Further, refer to Figure 3 , Figure 6 and Figure 7 As shown, it is worth noting that the horizontal plate 10 is also provided with an anti-blocking component for preventing the hot melt adhesive powder from blocking the screen 12;

[0038] The anti-blocking component includes two transverse air passages 25 symmetrically arranged in the inner wall of the transverse plate 10, and a connecting air passage 26 connected to the two transverse air passages 25 is also arranged in the inner wall of the transverse plate 10. A plurality of air nozzles 24 are fixed at equal distances on both sides of the bottom surface of the transverse plate 10, and the plurality of air nozzles 24 are connected to the transverse air passages 25;

[0039] An air delivery channel 27 connected to the connecting air channel 26 is vertically arranged in the inner wall of the rotating rod 8, and a pneumatic rotary joint 23 connected to the air delivery channel 27 is rotatably connected to the top of the transmission shaft 15;

[0040] By setting the anti-clogging component, when the screen 12 is blocked, the compressed air is connected to the pneumatic rotary joint 23, and the compressed air enters the air supply channel 27 along the pneumatic rotary joint 23 and is diverted into the transverse air channel 25 through the connecting air channel 26, and finally ejected from the air nozzle 24. In combination with the rotation of the rotating rod 8 and the transverse plate 10, the powder stuck in the sieve holes of the screen 12 can be cleaned to prevent the screen 12 from being blocked, resulting in a slow screening speed of the screen and affecting the powder output efficiency of the mill. At the same time, when the transmission shaft 15 rotates, the connection part of the pneumatic rotary joint 23 and the transmission shaft 15 will rotate together with the transmission shaft 15, and the connection part of the pneumatic rotary joint 23 and the compressed air pipeline will be fixed, which can effectively prevent the compressed air pipeline from being entangled on the transmission shaft 15 and causing safety hazards.

[0041] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0042] Although the following terms are used more frequently in this article: 1. chassis; 2. feed hopper; 3. crushing box; 4. crushing roller; 5. feed channel; 6. servo motor; 7. grinding cylinder; 8. rotating rod; 9. blade; 10. horizontal plate; 11. grinding ball; 12. screen; 13. bidirectional motor; 14. first pulley; 15. transmission shaft; 16. second pulley; 17. rotating belt; 18. turntable; 19. cam; 20. pull rod; 21. connecting plate; 22. stop block; 23. pneumatic rotary joint; 24. air nozzle; 25. transverse airway; 26. connecting airway; 27. air delivery channel; 28. discharge channel, etc., the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

[0043] The above is an introduction to a hot melt adhesive production grinding machine provided by the utility model. In the introduction, specific preferred embodiments are used to illustrate the principles and implementation methods of the utility model. These embodiments are only used to help understand the principles and core ideas of the utility model. It should be pointed out that for ordinary technicians in this field, without departing from the design idea of ​​the utility model, the implementation plans in the above embodiments can be further combined or replaced, and the utility model can be improved and modified in a number of ways. These improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A mill for hot melt adhesive production, comprising a machine case (1) and a preliminary crushing mechanism arranged on one side of the top of the machine case (1), a discharge channel (28) being fixedly arranged at the bottom of the inner wall of the machine case (1), and a discharge end of the discharge channel (28) being fixedly passed through the bottom surface of the machine case (1), characterized in that: A grinding cylinder (7) is vertically fixed on the top surface of the inner cavity of the chassis (1), a screen (12) with a rectangular cross section is slidably provided on the bottom of the grinding cylinder (7), and a secondary crushing mechanism for secondary crushing of hot melt adhesive particles is provided inside the grinding cylinder (7); The secondary crushing mechanism comprises a rotating rod (8) rotatably arranged in the middle of the grinding cylinder (7), a horizontal plate (10) vertically fixed to the end of the rotating rod (8), and a plurality of blades (9) fixed to the rod body of the rotating rod (8); a plurality of grinding balls (11) are rollingly embedded in the bottom surface of the horizontal plate (10); the plurality of grinding balls (11) are in contact with the screen (12); a first driving component for providing power to the rotating rod (8) is arranged on one side of the chassis (1); and an anti-blocking component for preventing hot melt adhesive powder from blocking the screen (12) is also arranged on the horizontal plate (10).

2. The hot melt adhesive production mill according to claim 1, characterized in that: The first driving component comprises a bidirectional motor (13) mounted on one side of the chassis (1), a first pulley (14) fixedly connected to an output shaft at one end of the bidirectional motor (13), and a transmission shaft (15) rotatably arranged on the inner wall of the top end of the chassis (1), one end of the transmission shaft (15) is fixedly connected to a second pulley (16), the other end of the transmission shaft (15) penetrates into the interior of the grinding cylinder (7) and is fixedly connected to the rotating rod (8), and a transmission belt (17) is connected between the first pulley (14) and the second pulley (16).

3. The hot melt adhesive production mill according to claim 2, characterized in that: Connecting plates (21) are slidably provided in the inner walls on both sides of the chassis (1), and the two connecting plates (21) are respectively fixedly connected to the two sides of the screen (12), and the other ends of the two connecting plates (21) pass through the side walls of the chassis (1) to connect to the limiting blocks (22), and a second driving component for causing the screen (12) to slide back and forth is provided below the bidirectional motor (13).

4. The hot melt adhesive production mill according to claim 3, characterized in that: The second driving component includes a turntable (18) fixedly connected to the output shaft at the other end of the bidirectional motor (13), a cam shaft (19) fixedly connected to the edge of the bottom surface of the turntable (18), a pull rod (20) being arranged on the cam shaft (19), one end of the pull rod (20) being rotatably connected to the cam shaft (19), and the other end of the pull rod (20) being hinged to the side wall of one of the two limit blocks (22).

5. The mill for hot melt adhesive production according to claim 4, characterized in that: The anti-blocking component comprises two transverse air passages (25) symmetrically arranged in the inner wall of the transverse plate (10); a connecting air passage (26) connected to the two transverse air passages (25) is also arranged in the inner wall of the transverse plate (10); a plurality of air nozzles (24) are fixed at equal distances on both sides of the bottom surface of the transverse plate (10); the air nozzles (24) are connected to the transverse air passages (25); an air supply passage (27) connected to the connecting air passage (26) is vertically arranged in the inner wall of the rotating rod (8); and a pneumatic rotary joint (23) connected to the air supply passage (27) is rotatably connected to the top of the transmission shaft (15).

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