A device for integrated rotary cutting and cooling of fire-retardant particles

Abstract

The utility model provides a kind of cutting and cooling integration device of flame-retardant particle, including extrusion main body, fixed plate, hinged plate, fixing frame, cutting assembly, cutting hole, screw hole, notch and locking bolt;When the phenomenon of cutting tool wear, collapse or shift occurs, only need to loosen locking bolt, then rotate hinged plate, so that cutting assembly is turned away from extrusion end, then cutting tool can be repaired or replaced;Therefore, the utility model can realize the repair or replacement of cutting tool without completely removing hinged plate and fixing frame, eliminate the problem that the distance between cutting tool and extrusion port is small, which makes it inconvenient to replace cutting tool, and if the entire fixing frame is removed, it is too troublesome and the overall weight of fixing frame and cutting assembly is relatively large, so it is also relatively laborious to disassemble.

Description

Technical Field

[0001] This utility model relates to the field of flame retardant particle processing technology, specifically to an integrated device for rotary cutting and cooling of flame retardant particles. Background Technology

[0002] High-performance flame-retardant plastic granules are a special type of plastic material that retains the general properties of plastics while also possessing excellent flame-retardant properties. These materials are widely used in fields with high fire safety requirements, such as electronics, automotive industry, and building materials.

[0003] Existing plastic pelletizing machines typically employ integrated cold-cutting and rotary-cutting equipment. The main process involves melting the material through a thermoplastic extrusion assembly and extruding it in strip form. A cooling assembly then cools and shapes the extruded strip, followed by a cutting assembly that cuts the cooled strip into pellets. Finally, a sorting assembly separates the resulting plastic pellets by particle size, improving product quality. However, the cutting assembly is prone to blade wear, breakage, or displacement during the cutting process. Damaged blades need replacement, but since the cutting assembly is usually fixed to the extrusion end by a bracket, the distance between the blade and the extrusion nozzle is generally small, making blade replacement inconvenient. Removing the entire bracket is too cumbersome, and the overall weight of the bracket and cutting assembly is relatively large and labor-intensive. Therefore, a rotary-cutting and cooling integrated device for flame-retardant pellets that facilitates blade replacement is needed. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated device for rotary cutting and cooling of flame-retardant granules, thereby solving the problems raised in the background art. To achieve the above objective, this utility model provides the following technical solution: it includes an extrusion body, a fixing plate fixed to the outer edge of the extrusion end of the extrusion body, and a hinge plate hinged to the fixing plate. A cutting component is fixedly connected to the end of the hinge plate opposite to the fixing plate via a fixing frame. The hinge plate is provided with a cutting hole aligned with the extrusion end. The cutting end of the cutting component passes through the cutting hole to cut the strip-shaped material extruded from the extrusion end into granules. A threaded hole is provided at the end of the hinge plate opposite to the hinge. A groove is provided on the fixing plate. A locking bolt passes through the groove and is threadedly connected to the threaded hole to fix the hinge plate to the fixing plate.

[0005] Furthermore, the cutting hole is chamfered.

[0006] Furthermore, a cover is fitted onto the extrusion end to allow coolant to flow through.

[0007] Furthermore, a material collection hopper is fixedly connected to the fixed plate.

[0008] Furthermore, the side wall of the hopper is provided with cooling channels.

[0009] Furthermore, a receiving trough is placed below the collecting hopper.

[0010] Furthermore, the fixing frame includes two guide rods fixed to the hinge plate, and a sliding seat is slidably connected to the guide rods. The ends of the two guide rods away from the hinge plate are fixed through a connecting plate. A drive mechanism for adjusting the movement of the cutting assembly along the axial direction of the extrusion end is provided between the connecting plate and the sliding seat.

[0011] Furthermore, the driving mechanism includes a screw rotatably connected to the connecting plate and a sleeve fixed to the bottom of the sliding seat, the sleeve being threadedly connected to the screw.

[0012] Furthermore, a handwheel is fixedly connected to one end of the screw, and a limit platform is fixedly connected to the other end of the screw.

[0013] Furthermore, the cutting assembly includes a motor fixed to the top of the sliding seat, the output end of the motor is connected to a rotating shaft, and a plurality of cutting blades are fixed to the end of the rotating shaft.

[0014] Furthermore, a blade holder is fixedly connected to the end of the rotating shaft, and the blade holder is provided with a plurality of clamps for holding the cutter. The clamps include a fixing block fixedly connected to the rotating shaft and a locking block detachably connected to the fixing block by fixing bolts. The fixing block is provided with an inclined surface, and the cutter is in contact with the inclined surface. The cutter is clamped by the fixing block and the locking block under the tightening of the fixing bolts.

[0015] Furthermore, the output end of the motor is provided with a square hole, and the rotating shaft is provided with a square shaft that mates with the square hole. The square shaft passes through the square hole, and a positioning pin is fixedly connected to the square shaft at both ends of the square hole. A compression spring is provided between the end face of the output end and the tool holder, and the positioning pin away from the tool holder abuts against the end face of the square hole under the action of the compression spring.

[0016] Furthermore, a connecting rod is fixedly connected between the connecting plate and the hinge plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: When the cutter wears, breaks, or shifts, simply loosen the locking bolts, then rotate the hinge plate to move the cutting assembly away from the extrusion end, and then the cutter can be repaired or replaced. Therefore, this utility model can repair or replace the cutter without completely removing the hinge plate and the fixing frame, eliminating the previous problems of inconvenient cutter replacement due to the small distance between the cutter and the extrusion port, and the troublesome and laborious disassembly of removing the entire fixing frame and the relatively large overall weight of the fixing frame and the cutting assembly. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a partially enlarged schematic diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall structure of the fixture;

[0022] Figure 4 This is a partial cross-sectional view of the present invention.

[0023] The components are as follows: 1. Extrusion body; 2. Fixing plate; 3. Hinge plate; 4. Cooling cover; 5. Sliding seat; 6. Connecting rod; 7. Guide rod; 8. Collection hopper; 9. Locking bolt; 10. Chamfer; 11. Fixture; 12. Cutter; 13. Compression spring; 14. Rotating shaft; 15. Threaded hole; 16. Motor; 17. Screw; 18. Handwheel; 19. Connecting plate; 20. Fixing block; 21. Locking block; 22. Positioning pin; 23. Square shaft. Detailed Implementation

[0024] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0025] Example: Please refer to Figure 1-4An integrated device for rotary cutting and cooling of flame-retardant granules includes an extrusion body 1, a fixing plate 2 fixed to the outer edge of the extrusion end of the extrusion body 1, and a hinge plate 3 hinged to the fixing plate 2. The extrusion body 1 is used to heat-melt the material and extrude it in strip form, then cool and shape the extruded strip material. Therefore, in this embodiment, the extrusion body 1 only needs to include common thermoplastic extrusion components and cooling components used in flame-retardant granule production, which will not be elaborated further here. For the cooling component, a cover can be fitted onto the extrusion end, and coolant (ice water) can be introduced into the cover to cool the extrusion end, thus cooling and shaping the extruded strip material. The hinge plate 3 is located away from the extrusion body. One end of the fixed plate 2 is fixedly connected to the cutting component via a fixing frame. The hinge plate 3 is provided with a cutting hole aligned with the extrusion end. The cutting end of the cutting component passes through the cutting hole to cut the strip material extruded from the extrusion end into granules, thereby achieving the cutting of flame-retardant granules. The end of the hinge plate 3 away from the hinge is provided with a threaded hole 15. The fixed plate 2 is provided with a groove. The locking bolt 9 passes through the groove and is threadedly connected to the threaded hole 15 to fix the hinge plate 3 to the fixed plate 2. Therefore, when the parts in the cutting component are damaged, it is only necessary to loosen the locking bolt 9 and then rotate the hinge plate 3 to move the cutting component away from the extrusion end. Then the parts in the cutting component can be repaired or replaced.

[0026] Therefore, by using a hinge plate 3 for hinge connection, this utility model enables the repair or replacement of parts in the cutting assembly without completely removing the hinge plate 3 and the fixing frame. This eliminates the previous problems of inconvenience in replacing the cutter 12 due to the small distance between the cutter 12 and the extrusion port, and the troublesome and laborious process of removing the entire fixing frame and the relatively large weight of the fixing frame and the cutting assembly. After the parts are repaired or replaced, simply rotate the hinge plate 3 to align the threaded hole 15 with the slot, then thread the locking bolt 9 through the slot and thread it into the threaded hole 15, and then tighten it to fix the hinge plate 3 to the fixing plate 2.

[0027] In this embodiment, the fixing frame includes two guide rods 7 fixed to the hinge plate 3. A sliding seat 5 is slidably connected to the guide rods 7. The ends of the two guide rods 7 away from the hinge plate 3 are fixedly connected by a connecting plate 19. A connecting rod 6 is fixedly connected between the connecting plate 19 and the hinge plate 3, thereby improving the support quality of the guide rods 7 and preventing the guide rods 7 from bending and deforming. A drive mechanism for adjusting the movement of the cutting assembly along the axial direction of the extrusion end is provided between the connecting plate 19 and the sliding seat 5. The drive mechanism includes a screw 17 rotatably connected to the connecting plate 19 and a sleeve fixed to the bottom of the sliding seat 5. The sleeve is threadedly connected to the screw 17. In addition, there is a self-locking between the sleeve and the screw 17 in the threaded connection, that is, when the screw 17 is not rotated, the linear movement of the sleeve cannot be converted into the rotation of the screw 17. When it is necessary to adjust the position of the cutting assembly, only the screw 17 needs to be rotated.

[0028] A handwheel 18 is fixed to one end of the screw 17 to facilitate its rotation, and a limit platform is fixed to the other end of the screw 17 to prevent the sleeve from moving off the screw 17. The cutting assembly includes a motor 16 fixed to the top of the sliding seat 5. The output end of the motor 16 is connected to a rotating shaft 14, and several cutters 12 are fixed to the end of the rotating shaft 14. Therefore, when the motor 16 is started, the rotating shaft 14 will drive the cutters 12 to rotate, thereby cutting the strip material extruded from the extrusion end into granules, thus realizing the cutting of flame-retardant granules. The movement of the sliding seat 5 is used to adjust the distance between the cutters 12 and the extrusion end.

[0029] In this embodiment, a blade holder is fixedly connected to the end of the rotating shaft 14. The blade holder is provided with several clamps 11 for holding the cutter 12. Each clamp 11 includes a fixing block 20 fixedly connected to the rotating shaft 14 and a locking block 21 detachably connected to the fixing block 20 by fixing bolts. The fixing block 20 has an inclined surface, and the cutter 12 fits against the inclined surface. The cutter 12 is clamped by the fixing block 20 and the locking block 21 when the fixing bolts are tightened, thereby realizing the detachable connection of the cutter 12 and facilitating the replacement of the cutter 12. The output end of the motor 16 is provided with a square hole, and the rotating shaft 14 is provided with a square shaft 23 that mates with the square hole. The square shaft 23 passes through the square hole, and positioning pins are fixedly connected to the square shaft 23 at both ends of the square hole. 22. A compression spring 13 is provided between the end face of the output end and the blade holder. The positioning pin 22 away from the blade holder abuts against the end face of the square hole under the action of the compression spring 13. At this time, there is a gap between the other positioning pin 22 and the end face of the square hole. When cutting is required, the cutting blade abuts against the extrusion end under the action of the compression spring 13. At this time, the positioning pin 22 away from the blade holder separates from the end face of the square hole, and the other positioning pin 22 moves towards the end face of the square hole, but there is still a gap between the two. Therefore, at this time, the elastic extrusion of the cutting blade 12 and the extrusion end is realized, which ensures that the cutting blade 12 fully cuts the strip material extruded by the extrusion end while reducing the wear of the cutting blade 12, and also reduces the precision adjustment requirements of the cutting blade 12.

[0030] Specifically, since the cutter 12 and the extrusion end have a rigid contact in the past, it is difficult to control the pressure between the cutter 12 and the extrusion end. If the pressure is too low or there is no pressure, it means that there is a large gap between the cutter 12 and the extrusion end, which is not conducive to cutting strip materials. On the other hand, if the pressure is too high, it will cause great damage to the cutter 12. Therefore, in this utility model, the cutter 12 and the extrusion end are elastically squeezed together by a compression spring 13, which eliminates the situation that the pressure between the cutter 12 and the extrusion end can easily change drastically with the adjustment of the gap, thereby improving the cutting quality and extending the service life of the cutter 12.

[0031] In this embodiment, the cutting hole is chamfered 10 to prevent flame-retardant particles from remaining in the cutting hole after cutting; a collection hopper 8 is fixedly connected to the fixing plate 2s, and the collection hopper 8 is aligned with the cutting hole to facilitate the collection of flame-retardant particles after cutting and prevent splashing. In addition, a cooling channel is provided inside the side wall of the collection hopper 8, which can be circulated with ice water to further cool the flame-retardant particles inside the collection hopper 8, thereby improving the forming quality of the flame-retardant particles; a receiving groove is placed below the collection hopper 8 to facilitate the receiving of flame-retardant particles after cutting. In addition, a cooling cover 4 is provided on the heat-generating end of the motor 16, and coolant flows inside the cooling cover 4 to prevent the motor 16 from overheating and to prevent workers from being burned.

[0032] Working principle: When the cutter 12 is worn, broken, or displaced, simply loosen the locking bolt 9, then rotate the hinge plate 3 to move the cutting assembly away from the extrusion end, and then the cutter 12 can be repaired or replaced. After the parts are repaired or replaced, simply rotate the hinge plate 3 to align the threaded hole 15 with the slot, then thread the locking bolt 9 through the slot and thread it into the threaded hole 15, and then tighten it to fix the hinge plate 3 to the fixing plate 2. Therefore, this utility model, by using the hinge plate 3 for hinge connection, can achieve the repair or replacement of the cutter 12 without completely removing the hinge plate 3 and the fixing frame. This eliminates the previous problems of inconvenience in replacing the cutter 12 due to the small distance between the cutter 12 and the extrusion port, and the troublesome and laborious problem of removing the entire fixing frame and the relatively large weight of the fixing frame and the cutting assembly.

[0033] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An integrated device for rotary cutting and cooling of flame-retardant granules, characterized in that: The device includes an extrusion body (1), a fixing plate (2) fixed to the outer edge of the extrusion end of the extrusion body (1), and a hinge plate (3) hinged to the fixing plate (2). A cutting component is fixed to one end of the hinge plate (3) away from the fixing plate (2) via a fixing frame. The hinge plate (3) is provided with a cutting hole aligned with the extrusion end. The cutting end of the cutting component passes through the cutting hole to cut the strip material extruded from the extrusion end into granules. A threaded hole (15) is provided on one end of the hinge plate (3) away from the hinge. A slot is provided on the fixing plate (2). A locking bolt (9) passes through the slot and is threaded to the threaded hole (15) to fix the hinge plate (3) to the fixing plate (2).

2. The integrated device for rotary cutting and cooling of flame-retardant particles according to claim 1, characterized in that: The extrusion end is fitted with a cover for the flow of coolant.

3. The integrated device for rotary cutting and cooling of flame-retardant particles according to claim 1, characterized in that: A material collection hopper (8) is fixedly connected to the fixed plate (2).

4. The integrated device for rotary cutting and cooling of flame-retardant particles according to claim 3, characterized in that: The side wall of the hopper (8) is provided with a cooling channel.

5. The integrated device for rotary cutting and cooling of flame-retardant particles according to claim 1, characterized in that: The fixing frame includes two guide rods (7) fixed to the hinge plate (3). A sliding seat (5) is slidably connected to the guide rods (7). The ends of the two guide rods (7) away from the hinge plate (3) are fixed through a connecting plate (19). A drive mechanism for adjusting the movement of the cutting assembly along the axial direction of the extrusion end is provided between the connecting plate (19) and the sliding seat (5).

6. The integrated device for rotary cutting and cooling of flame-retardant particles according to claim 5, characterized in that: The driving mechanism includes a screw (17) rotatably connected to the connecting plate (19) and a sleeve fixed to the bottom of the sliding seat (5), the sleeve being threadedly connected to the screw (17).

7. The integrated device for rotary cutting and cooling of flame-retardant particles according to claim 6, characterized in that: One end of the screw (17) is fixedly connected to a handwheel (18), and the other end of the screw (17) is fixedly connected to a limiting platform.

8. The integrated device for rotary cutting and cooling of flame-retardant particles according to claim 5, characterized in that: The cutting assembly includes a motor (16) fixed to the top of the sliding seat (5), the output end of the motor (16) is connected to a rotating shaft (14), and a plurality of cutters (12) are fixed to the end of the rotating shaft (14).

9. The integrated device for rotary cutting and cooling of flame-retardant particles according to claim 8, characterized in that: A blade holder is fixedly connected to the end of the rotating shaft (14). The blade holder is provided with a plurality of clamps (11) for holding the cutter (12). The clamp (11) includes a fixing block (20) fixedly connected to the rotating shaft (14) and a locking block (21) detachably connected to the fixing block (20) by fixing bolts. The fixing block (20) is provided with an inclined surface. The cutter (12) fits against the inclined surface. The cutter (12) is clamped by the fixing block (20) and the locking block (21) under the tightening of the fixing bolts.

10. The integrated device for rotary cutting and cooling of flame-retardant particles according to claim 9, characterized in that: The output end of the motor (16) is provided with a square hole, and the rotating shaft (14) is provided with a square shaft (23) that mates with the square hole. The square shaft (23) passes through the square hole, and a positioning pin (22) is fixedly connected to the square shaft (23) at both ends of the square hole. A compression spring (13) is provided between the end face of the output end and the tool holder. The positioning pin (22) away from the tool holder abuts against the end face of the square hole under the action of the compression spring (13).

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