CN220373661U

CN220373661U - Rotary water-cooling hot cutting device

Info

Publication number: CN220373661U
Application number: CN202321532277.XU
Authority: CN
Inventors: 朱晓英
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-15
Filing date: 2023-06-15
Publication date: 2024-01-23
Anticipated expiration: 2033-06-15

Abstract

The utility model discloses a rotary water-cooling hot cutting device which comprises a die head provided with die holes, a knife rest provided with a blade, and a liquid storage cavity arranged among a plurality of die holes, wherein a covering cavity communicated with the liquid storage cavity is arranged at the periphery of the die holes. According to the rotary water-cooling hot cutting device, cooling water in the water chamber enters the liquid storage cavity and uniformly cools the plurality of die holes, meanwhile, the cooling water flowing into the covering cavity can independently cool the die holes, and cooling water flowing into the liquid storage cavity and the covering cavity can improve cooling heat replacement, so that the die holes have a better cooling effect, cutting raw materials of a cutter head cannot be influenced, and the problem that the cut is easy to deform greatly when the raw materials are discharged from the die holes for cutting is solved.

Description

Rotary water-cooling hot cutting device

Technical Field

The utility model relates to the technical field of plastic processing equipment, in particular to a rotary water-cooling hot cutting device.

Background

When the granular plastic products are processed, a hot cutting water cooling process is adopted, specifically, materials are melted at high temperature and extruded out of a die hole of a die head, the extruded strip-shaped materials are cut off by a cutter head which is tightly attached to the plane of the die head and rotates at high speed, the cutter head and the die head are sealed by a water chamber, and finally, the cut-off material particles are cooled and solidified by cooling water in the water chamber, so that solid finished plastic particles are generated.

According to publication (bulletin) No.: CN215149333U, publication (date): 2021-12-14 discloses a novel underwater pelletizer head; the cutter head body is composed of a grain cutting cutter head and an extension cutter frame, the extension cutter frame is arranged on the outer wall of the grain cutting cutter head at equal intervals in a ring shape, the grain cutting cutter head and the extension cutter frame are integrally formed, a cutter is arranged on the outer wall of the extension cutter frame, an inclined cutter face is arranged on one side, away from the center of the grain cutting cutter head, of the cutter, a cutter hole is formed in the outer wall, located on one side of the inclined cutter face, of the cutter, and the width of the cutter is equal to that of the extension cutter frame. The cutter head for dicing is provided with the cutter blade, the cutter blade is arranged outside the cutter head for dicing, underwater dicing is carried out on the cutter blade, powder is easy to generate around the cutter blade during dicing of the cutter blade, the tailing of the cutter blade and the inclined cutter blade for dicing is greatly improved, the tailing condition is weakened, convenience is provided for dicing operation, and the improved inclined cutter blade has better use effect than the common cutter blade.

According to publication (bulletin) No.: CN203637018U, publication (date): 2014-06-11, discloses a rotary water-cooled hot cutting device comprising: the cooling device comprises a central shaft, a rotary tool rest, a cooling water channel, a material hole and a cooling material barrel. The center shaft is perpendicular to the paper surface, the center of the rotary tool rest is concentric with the center shaft, the cooling water channel is a cylinder concentric with the center shaft, the cooling charging basket is a cylinder concentric with the center shaft, the diameter of the cooling charging basket is larger than that of the cooling water channel, and the material holes are 16 cylinders which are centripetally distributed by taking the center shaft as the center of a circle. The rotary water-cooling hot cutting device provided by the utility model realizes rapid and efficient plastic material granulating automation, improves the production efficiency, and reduces the production energy consumption and the machine floor area.

In the prior art including the above patent, since the cooling water in the water chamber is responsible for cooling the cut raw materials, and the cooling water in the water chamber cools the die surface more or less, but the high temperature of the strip raw materials extruded from the die hole of the die head is far insufficient for cooling the die surface only by the cooling water, the cut position of the strip raw materials with high temperature is easy to be deformed greatly when being cut by the cutter head, and the production efficiency of the particle raw materials is reduced.

Disclosure of Invention

The utility model aims to provide a rotary water-cooling hot cutting device, which solves the problem that the incision position of a granular raw material is easy to deform greatly when the raw material with higher temperature is cut by a cutter head.

In order to achieve the above object, the present utility model provides the following technical solutions: the rotary water-cooling hot cutting device comprises a die head provided with die holes, a knife rest provided with a blade, and a liquid storage cavity arranged among a plurality of the die holes;

and a covering cavity communicated with the liquid storage cavity is formed at the periphery of the die hole.

Preferably, symmetrically arranged inclined plates are fixedly arranged on the blades, and a converging cavity is arranged between the two inclined plates;

and a wide opening matched with the converging cavity is arranged at the port of the covering cavity.

Preferably, an impeller is rotatably arranged in the liquid storage cavity in the circumferential direction, and the impeller drives the fluid in the covering cavity to flow to the liquid storage cavity.

Preferably, a channel is formed between every two covering cavities.

Preferably, a row of holes is formed in the die head, and the row of holes is communicated with the liquid storage cavity and the covering cavity.

Preferably, the knife rest is fixedly provided with a rotating shaft, and the impeller is fixedly arranged on the rotating shaft.

Preferably, the included angle between the inclined plate and the blade is specifically 60 °.

In the technical scheme, the rotary water-cooling hot cutting device provided by the utility model has the following beneficial effects: the cooling water in the water chamber enters the liquid storage cavity and uniformly cools the plurality of die holes, meanwhile, the cooling water flowing into the covering cavity can independently cool the die holes, and the cooling water flowing in the liquid storage cavity and the covering cavity can improve cooling heat replacement, so that the die holes have better cooling effect and cannot influence cutting raw materials of the cutter head, and the problem that the cut is easy to deform greatly when the raw materials are discharged and cut from the die holes is solved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of the front structure of a die head and a tool holder according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a schematic side view of a tool post and a schematic cross-sectional side view of a die head according to an embodiment of the utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 1 at A;

fig. 4 is an enlarged schematic view of the structure at B in fig. 2.

Reference numerals illustrate:

1. a die head; 11. a die hole; 2. a tool holder; 21. a blade; 31. a liquid storage cavity; 32. covering the cavity; 321. a wide mouth; 33. a sloping plate; 331. a converging cavity; 34. a channel; 35. arranging holes; 36. a rotating shaft; 361. an impeller.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, a rotary water-cooling hot-cutting apparatus comprises a die head 1 provided with a die hole 11, a knife rest 2 provided with a knife blade 21, and a liquid storage cavity 31 arranged among a plurality of die holes 11;

the periphery of the die hole 11 is provided with a cover cavity 32 communicated with the liquid storage cavity 31.

Specifically, as shown in fig. 1, 2 and 4, the liquid reservoir 31 and the die 1 are arranged coaxially, and the cover 32 and the orifice 11 are arranged coaxially. The cooling water in the water chamber enters the liquid storage cavity 31 and uniformly cools the plurality of die holes 11, meanwhile, the cooling water flowing into the covering cavity 32 can independently cool the die holes 11, and the cooling water flowing into the liquid storage cavity 31 and the covering cavity 32 can improve cooling heat replacement, so that the die holes 11 have better cooling effect and cannot influence cutter head cutting raw materials, and the problem that the cut is easy to deform greatly when the raw materials are discharged from the die holes 11 for cutting is solved.

As a further embodiment of the present utility model, the blades 21 are fixedly provided with symmetrically arranged inclined plates 33, and a converging cavity 331 is arranged between the two inclined plates 33;

a wide mouth 321 is provided at the end of the covering chamber 32 which cooperates with the converging chamber 331.

Specifically, as shown in fig. 1, 2 and 3, the inclined plates 33 are specifically stainless steel metal plates, the cross section of the converging cavity 331 formed between the two inclined plates 33 is in a table shape, and the larger bottom surface of the table-shaped converging cavity 331 is opposite to the rotation direction of the blade 21. During the rapid rotation of the blade 21 along with the tool rest 2, the cavity is formed in the converging cavity 331, so that the cooling water in the water chamber enters the converging cavity 331 at a larger flow rate, and the cooling water flowing into the converging cavity 331 reaches the position of the smaller bottom surface of the converging cavity 331 and is diffused to two sides, so that the cooling water with a larger flow rate enters the covering cavity 32 from the wide opening 321, and the cooling water rapidly flows in the covering cavity 32 to improve the cooling of the single die hole 11.

As a further embodiment of the present utility model, the impeller 361 is rotatably disposed in the liquid storage chamber 31 in the circumferential direction, and the impeller 361 drives the fluid in the cover chamber 32 to flow toward the liquid storage chamber 31.

Specifically, as shown in fig. 2, 3 and 4, the cooling water with a larger flow rate in the cover cavity 32 flows into the communicated liquid storage cavity 31, and simultaneously is matched with the impeller 361 to extract and discharge the cooling water in the liquid storage cavity 31 to the tool rest 2, so that the cooling water in the cover cavity 32 and the liquid storage cavity 31 is circulated, and the cooling efficiency of the die holes 11 is improved.

As a further embodiment of the present utility model, a channel 34 is provided between each two of the cover cavities 32.

Specifically, as shown in fig. 2 and 4, a plurality of passages 34 are annularly arranged on the die 1. The cooling water in the plurality of cover cavities 32 is circulated through the passages 34 to thereby enhance the cooling cycle in the cover cavities 32.

As still another embodiment of the present utility model, a hole 35 is formed in the die head 1, and the hole 35 is connected to the liquid storage chamber 31 and the cover chamber 32.

Specifically, as shown in fig. 2 and 4, the cooling water in the liquid storage chamber 31 and the cover chamber 32 is rapidly flowed through the drain holes 35, so that the circulation of the cooling water is ensured.

As still another embodiment of the present utility model, the spindle 36 is fixedly mounted on the tool holder 2, and the impeller 361 is fixedly mounted on the spindle 36.

Specifically, as shown in fig. 1 and 2, the impeller 361 is driven to rotate by the rotation of the tool rest 2 under the action of the rotating shaft 36, so that no additional driving is needed when the impeller 361 rotates.

As a further embodiment of the present utility model, the angle between the sloping plate 33 and the blade 21 is in particular 60 °.

Specifically, as shown in fig. 2 and 3, the inclined plate 33 is arranged obliquely so that the table-shaped converging chamber 331 has smaller resistance when rotating with the blade 21, and the larger bottom surface position of the converging chamber 331 can also suck more cooling water at a larger flow rate.

Working principle: cooling water in the water chamber enters the liquid storage cavity 31 and uniformly cools the plurality of die holes 11, meanwhile, the cooling water flowing into the covering cavity 32 can independently cool the die holes 11, and the cooling water flowing into the liquid storage cavity 31 and the covering cavity 32 can improve cooling heat replacement, so that the die holes 11 have better cooling effect and cannot influence cutting raw materials of a cutter head, and the problem that the cut is easy to deform greatly when the raw materials are discharged from the die holes 11 for cutting is solved; meanwhile, in the process that the blade 21 rotates rapidly along with the tool rest 2, a cavity is formed in the converging cavity 331, cooling water in the water chamber enters the converging cavity 331 at a larger flow rate, cooling water flowing into the converging cavity 331 reaches the position of the smaller bottom surface of the converging cavity 331 and is diffused to two sides, cooling water with a larger flow rate enters the covering cavity 32 from the wide opening 321, cooling water with a larger flow rate in the covering cavity 32 flows into the communicated liquid storage cavity 31, and meanwhile, cooling water in the liquid storage cavity 31 is extracted and discharged to the tool rest 2 by matching with the impeller 361, so that cooling water in the covering cavity 32 and cooling water in the liquid storage cavity 31 form a circulation, and cooling efficiency of the die hole 11 is improved.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. The rotary water-cooling hot cutting device comprises a die head (1) provided with die holes (11) and a tool rest (2) provided with a blade (21), and is characterized by further comprising a liquid storage cavity (31) arranged among the plurality of die holes (11);

and a covering cavity (32) communicated with the liquid storage cavity (31) is formed at the periphery of the die hole (11).

2. The rotary water-cooling hot cutting device according to claim 1, wherein symmetrically arranged inclined plates (33) are fixedly arranged on the blade (21), and a converging cavity (331) is arranged between the two inclined plates (33);

the port of the covering cavity (32) is provided with a wide port (321) matched with the converging cavity (331).

3. A rotary water-cooled hot cutting device according to claim 1, wherein an impeller (361) is provided in the liquid storage chamber (31) in a circumferential rotation manner, and the impeller (361) drives the fluid in the cover chamber (32) to flow to the liquid storage chamber (31).

4. A rotary water-cooled hot cutting apparatus according to claim 1, wherein a channel (34) is provided between each two of the cover chambers (32).

5. The rotary water-cooling hot cutting device according to claim 1, wherein a row of holes (35) is formed in the die head (1), and the row of holes (35) are communicated with the liquid storage cavity (31) and the covering cavity (32).

6. A rotary water-cooled hot cutting apparatus according to claim 3, wherein the rotary shaft (36) is fixedly mounted on the tool holder (2), and the impeller (361) is fixedly mounted on the rotary shaft (36).

7. A rotary water-cooled hot cutting device according to claim 2, characterized in that the angle between the sloping plate (33) and the blade (21) is in particular 60 °.