Grinding equipment for producing polyurethane hot melt adhesive powder

Abstract

The utility model provides grinding equipment for polyurethane hot melt adhesive powder production, which relates to the technical field of polyurethane hot melt adhesive powder production and comprises a blanking box, a first blanking area, a second blanking area, a third blanking area, a screen, a baffle, a sliding rod, a vibrating motor, an electric telescopic rod, a shell, a fixing rod, a grinding block and a grinding cavity. Motors used for driving the grinding blocks to rotate are arranged on the lower surfaces of the fixing rods correspondingly, the first discharging area, the second discharging area and the third discharging area are connected with the grinding cavities below the first discharging area, the second discharging area and the third discharging area through material guiding cavities correspondingly, partition plates used for partitioning the three grinding blocks are arranged in the shell, and a collecting box is arranged below each grinding block; according to the device, fed polyurethane particles can be treated in batches according to different particle sizes, so that the problem that the grinding efficiency is reduced due to the fact that the polyurethane particles with different particle sizes are accumulated in the same grinding cavity can be prevented, meanwhile, the grinding quality can be improved, and the use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane hot melt adhesive powder production, in particular to a grinding device for the production of polyurethane hot melt adhesive powder. Background Art

[0002] Polyurethane hot melt adhesive powder is a kind of translucent particles and powder. The production process of hot melt adhesive powder includes: raw material mixing, extrusion molding, heat treatment, crushing and grinding, packaging and storage. Among them, the crushing and grinding step completes the main production of hot melt adhesive powder. When the existing grinding equipment is used, polyurethane particles of different particle sizes are directly ground at one time, resulting in reduced grinding efficiency during the grinding process of large-particle-size polyurethane particles, and continuous accumulation of subsequent materials, which affects the grinding efficiency and the quality of the hot melt adhesive powder. Utility Model Content

[0003] The purpose of the utility model is to provide a grinding device for producing polyurethane hot melt adhesive powder, aiming to solve the problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the grinding equipment for producing polyurethane hot melt adhesive powder includes a blanking box, which is arranged obliquely, with openings at the upper and lower ends of the blanking box, and the bottom opening of the blanking box is divided into a first blanking area, a second blanking area and a third blanking area from top to bottom, and the first blanking area and the second blanking area are both provided with screens, the aperture of the screen in the first blanking area is smaller than the aperture of the screen in the second blanking area, a baffle is provided inside the blanking box, and sliding rods symmetrically connected to the baffle are provided inside the blanking box, a vibration motor is provided on one side of the baffle, and a An electric telescopic rod is used to drive the blanking box to move along the sliding rod, a shell is provided at the bottom of the blanking box, a fixed rod is provided inside the shell, grinding blocks for processing polyurethane particles of different particle sizes are provided below the first blanking area, the second blanking area and the third blanking area, a grinding cavity matched with the grinding block is also provided inside the shell, and motors for driving the grinding blocks to rotate are respectively provided on the lower surfaces of the fixed rods, the first blanking area, the second blanking area and the third blanking area are connected to the grinding cavity below each through a material guide cavity, a partition for separating the three grinding blocks is provided inside the shell, and a collection box is provided below each grinding block.

[0005] Preferably, a material guide cover is provided on the fixing rod, and the motor is located below the material guide cover, so that the ground powder passes through the material guide cover and enters a collection box directly below.

[0006] Preferably, the upper surface of the fixing rod is arranged to be arc-shaped.

[0007] Preferably, a through hole is formed on the baffle, a shock absorbing ring is arranged inside the through hole, and the sliding rod is slidably connected to the shock absorbing ring.

[0008] Preferably, a cover plate is provided at the upper opening of the blanking box and directly above the second blanking area and the third blanking area.

[0009] The beneficial effects of the utility model are:

[0010] The device can process the input polyurethane particles in batches according to different particle sizes, thereby preventing the polyurethane particles of different particle sizes from piling up in the same grinding chamber, causing the problem of reduced grinding efficiency. At the same time, it can also improve the grinding quality and has a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0012] Figure 2 It is a schematic diagram of the structure inside the baffle of a specific embodiment of the utility model.

[0013] In the figure: 1. blanking box; 2. first blanking area; 3. second blanking area; 4. third blanking area; 5. screen; 6. baffle; 7. slide bar; 8. vibration motor; 9. electric telescopic rod; 10. shell; 11. fixed rod; 12. grinding block; 13. grinding chamber; 14. motor; 15. material guide chamber; 16. partition; 17. collection box; 18. material guide cover; 19. shock-absorbing ring; 20. cover plate; 21. slot. DETAILED DESCRIPTION

[0014] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0015] like Figure 1-2As shown, a grinding device for producing polyurethane hot melt adhesive powder includes a blanking box 1, which is tilted and has openings at the upper and lower ends. The bottom opening of the blanking box 1 is divided into a first blanking area 2, a second blanking area 3 and a third blanking area 4 from top to bottom. Screens 5 are provided inside the first blanking area 2 and the second blanking area 3. The aperture of the screen 5 in the first blanking area 2 is smaller than the aperture of the screen 5 in the second blanking area 3. A baffle 6 is provided inside the blanking box 1. Slide rods 7 slidably connected to the baffle 6 are symmetrically provided inside the blanking box 1. A vibration motor 8 is provided on one side of the baffle 6. An electric telescopic rod 9 for driving the blanking box 1 to move along the slide rod 7 is provided on one side of the blanking box 1. A shell 10 is provided at the bottom of the blanking box 1, and a fixed rod 11 is provided inside the shell 10. Grinding blocks 12 for processing polyurethane particles of different particle sizes are provided below the first blanking area 2, the second blanking area 3 and the third blanking area 4. A grinding cavity 13 cooperating with the grinding block 12 is also provided inside the shell 10. Motors 14 for driving the grinding block 12 to rotate are provided on the lower surfaces of the fixed rod 11. The first blanking area 2, the second blanking area 3 and the third blanking area 4 are connected to the grinding cavity 13 below each through a material guide cavity 15. A partition 16 for separating the three grinding blocks 12 is provided inside the shell 10, and a collection box 17 is provided below each grinding block 12.

[0016] When the polyurethane particles are put into the blanking box 1, the baffle 6 is located in the first blanking area 2, and a certain amount of polyurethane particles are put into the first blanking area 2 of the blanking box 1 at one time, and then the vibration motor 8 is started, the vibration motor 8 generates vibration, and transmits the vibration to the screen 5 in the first blanking area 2 and the second blanking area 3 through the baffle 6, and promotes the polyurethane particles with a particle size smaller than the aperture of the screen 5 in the first blanking area 2 to pass through the screen 5 in the first blanking area 2, and enter the grinding chamber 13 through the guide cavity 15, and drive the rotation of the grinding block 12 with the motor 14 to grind the polyurethane particles, and the powder falls through the grinding chamber 13 to the collection box 17 below, and the partition 16 can prevent the powder from entering the adjacent collection box 17; when the vibration motor 8 processes the polyurethane particles in the first blanking area 2 for a certain period of time, the electric telescopic rod 9 is controlled to start, and the output end of the electric telescopic rod 9 pushes the baffle 6 to move along the slide rod 7, and moves the baffle 6 to the junction of the second blanking area 3 and the third blanking area 4. At this time, under the gravity and Under the action of the vibration motor 8, the polyurethane particles still staying on the screen 5 in the first blanking area 2 will slide onto the screen 5 in the second blanking area 3. Since the aperture of the screen 5 in the second blanking area 3 is increased, part of the polyurethane particles that have not passed through the screen 5 in the first blanking area 2 can pass through the screen 5 in the second blanking area 3. After the polyurethane particles pass through the screen 5, the polyurethane particles are ground by the cooperation of the grinding block 12 and the grinding chamber 13. When the polyurethane particles are processed in the second blanking area 3 for a certain period of time, the baffle 6 is continued to be controlled to move by the electric telescopic rod 9 so that the baffle 6 is located in the third blanking area 4. After the baffle 6 is located in the third blanking area 4, the remaining polyurethane particles that have not passed through the first two screens 5 all pass through the third blanking area 4 and enter between the grinding chamber 13 and the grinding block 12 located directly below the third blanking area 4, and are ground. A card slot 21 for accommodating and fixing the electric telescopic rod 9 is provided on one side of the blanking box 1. The card slot 21 is tilted to maintain the stability of the electric telescopic rod 9.

[0017] Furthermore, a material guide cover 18 is provided on the fixed rod 11, and the motor 14 is located below the material guide cover 18. The ground powder passes through the material guide cover 18 and enters the collecting box 17 directly below. The material guide cover 18 can prevent the ground powder from adhering to the outer surface of the motor 14 and prevent the motor 14 from poor heat dissipation, and the material guide cover 18 will not affect the normal falling of the powder.

[0018] Furthermore, the upper surface of the fixing rod 11 is configured to be arc-shaped to reduce the accumulation of powder on the upper surface of the fixing rod 11 , and the accumulation of powder on the upper surface of the fixing rod 11 can be further reduced by the operation of the vibration motor 8 .

[0019] Furthermore, a through hole is opened on the baffle 6, and a shock-absorbing ring 19 is arranged inside the through hole. The slide rod 7 is slidably connected to the shock-absorbing ring 19 to prevent the baffle 6 from vibrating and causing serious friction and collision between the baffle 6 and the slide rod 7, thereby preventing the slide rod 7 and the baffle 6 from being damaged.

[0020] Furthermore, a cover plate 20 is provided at the upper opening of the blanking box 1 and directly above the second blanking area 3 and the third blanking area 4. The cover plate 20 can prevent the polyurethane particles from flying out of the blanking box 1 during the downward sliding process.

[0021] The device can process the input polyurethane particles in batches according to different particle sizes, thereby preventing polyurethane particles of different particle sizes from piling up in the same grinding chamber 13, causing the problem of reduced grinding efficiency, while also improving the grinding quality and achieving good use effect.

[0022] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A grinding device for producing polyurethane hot melt adhesive powder, characterized in that: The invention comprises a blanking box (1), wherein the blanking box (1) is arranged at an angle, and the upper and lower ends of the blanking box (1) are opened. The bottom opening of the blanking box (1) is divided into a first blanking area (2), a second blanking area (3) and a third blanking area (4) from top to bottom. The first blanking area (2) and the second blanking area (3) are both provided with a screen (5). The aperture of the screen (5) in the first blanking area (2) is smaller than the aperture of the screen (5) in the second blanking area (3). The blanking box (1) is provided with a baffle (6). The blanking box (1) is symmetrically provided with a sliding rod (7) slidably connected to the baffle (6). A vibration motor (8) is provided on one side of the baffle (6). An electric telescopic rod (9) for driving the blanking box (1) to move along the sliding rod (7) is provided on one side of the blanking box (1). The blanking box (1) is provided with a plurality of electric telescopic rods (9) for driving the blanking box (1) to move along the sliding rod (7). ) is provided with a shell (10) at the bottom, a fixing rod (11) is provided inside the shell (10), grinding blocks (12) for processing polyurethane particles of different particle sizes are provided below the first drop zone (2), the second drop zone (3) and the third drop zone (4), a grinding chamber (13) matched with the grinding block (12) is also provided inside the shell (10), and motors (14) for driving the grinding blocks (12) to rotate are provided on the lower surface of the fixing rod (11), the first drop zone (2), the second drop zone (3) and the third drop zone (4) are connected to the grinding chamber (13) below each through a material guide chamber (15), a partition (16) for separating the three grinding blocks (12) is provided inside the shell (10), and a collection box (17) is provided below each grinding block (12).

2. The grinding equipment for producing polyurethane hot melt adhesive powder according to claim 1, characterized in that: A material guide cover (18) is provided on the fixed rod (11), and the motor (14) is located below the material guide cover (18). The ground powder passes through the material guide cover (18) and enters a collection box (17) directly below.

3. The grinding equipment for producing polyurethane hot melt adhesive powder according to claim 1, characterized in that: The upper surface of the fixing rod (11) is arranged in an arc shape.

4. The grinding equipment for producing polyurethane hot melt adhesive powder according to claim 1, characterized in that: The baffle plate (6) is provided with a through hole, a shock absorbing ring (19) is arranged inside the through hole, and the sliding rod (7) is slidably connected to the shock absorbing ring (19).

5. The grinding equipment for producing polyurethane hot melt adhesive powder according to claim 1, characterized in that: A cover plate (20) is provided at the upper opening of the blanking box (1) and directly above the second blanking area (3) and the third blanking area (4).

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