Five-layer co-extrusion inner cooling die head

Abstract

The utility model discloses a five-layer co-extrusion inner cooling die head. The five-layer co-extrusion inner cooling die head comprises a die core assembly, the mold body sleeves the outer side of the mold core assembly; the four die sleeves are located between the die core assembly and the die body and sequentially arranged on the outer side of the die core assembly in a sleeving mode, and five feeding channels are formed among the four die sleeves, the outer wall of the die core assembly and the inner wall of the die body. The discharging assembly is arranged at the upper end of the die sleeve and die core assembly and communicates with the five feeding channels. The mold core assembly comprises a feeding base, five feeding ports are formed in the feeding base, five cavities are formed in the inner side of the feeding base, connecting channels are arranged between the five cavities and the five feeding ports correspondingly, a plurality of fan-shaped channels communicated with the cavities are formed in the feeding base, the five layers of fan-shaped channels are communicated with the five feeding channels correspondingly, and the five layers of fan-shaped channels are communicated with the five feeding channels correspondingly. The utility model relates to the technical field of film blowing machines, melts are fed from a plurality of fan-shaped channels after entering the cavity, so that the uniformity of the melts entering the feeding channel is ensured, the problem of non-uniform thickness of films is effectively avoided, and the quality of products is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing machines, in particular to a five-layer co-extrusion internally cooled die head. Background Art

[0002] A film blowing machine heats and melts plastic particles before blowing them into thin films. The die head, a component of the film blowing machine, is used to blow the molten plastic particles into film bubbles. To meet the special functional requirements of plastic film packaging materials during production, multi-layer co-extrusion film blowing machines have been developed to combine and co-extrude materials with various properties (such as breathability, waterproofing, thermal insulation, and toughness) to form multifunctional plastic films.

[0003] At present, the core assembly is a component used for feeding a five-layer co-extrusion internal cooling die head. However, when the five-layer co-extrusion internal cooling die head is actually used, there is a problem of uneven feeding resulting in uneven film thickness, which affects product quality. For this reason, a five-layer co-extrusion internal cooling die head is provided. Utility Model Content

[0004] The purpose of the utility model is to provide a five-layer co-extrusion internal cooling die head to solve the problem of uneven film thickness caused by uneven feeding when the five-layer co-extrusion internal cooling die head is actually used, thereby affecting the product quality.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a five-layer co-extrusion internal cooling die head, comprising:

[0006] mold core assembly;

[0007] A mold body, sleeved on the outer side of the mold core assembly;

[0008] Four mold sleeves are provided, located between the mold core assembly and the mold body, and are sequentially sleeved on the outer side of the mold core assembly, and five feeding channels are formed between the four mold sleeves and the outer wall of the mold core assembly and the inner wall of the mold body;

[0009] A discharge assembly is provided at the upper end of the mold sleeve and mold core assembly and is connected to the five feed channels;

[0010] The core assembly includes a feed seat, which is provided with five feed ports. Five cavities are provided on the inner side of the feed seat. Connecting channels are provided between the five cavities and the five feed ports respectively. The feed seat is provided with several fan-shaped channels connected to the cavities, and the five layers of fan-shaped channels are respectively connected to the five feed channels.

[0011] Preferably, the discharge assembly includes a die nozzle arranged on the core assembly and a die arm arranged on the die body, and a discharge channel connected to five feed channels is formed between the die nozzle and the die arm.

[0012] Preferably, the bottoms of the four mold sleeves are arranged downward in a stepped manner.

[0013] Preferably, the connecting channel is connected to the bottom center of the cavity.

[0014] Preferably, the cross section of the fan-shaped channel is set to be trapezoidal.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is a five-layer co-extrusion internal cooling die. When the five-layer co-extrusion internal cooling die is actually used, the melt enters the connecting channel, the cavity, the fan-shaped channel in sequence through the feed port, and then enters the feed channel. After the melt enters the cavity, it is fed from multiple fan-shaped channels, ensuring the uniformity of the melt entering the feed channel, effectively avoiding the problem of uneven film thickness, and ensuring the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 2 This is a schematic top-sectional structural diagram of the mold core assembly of the present invention.

[0018] In the figure: 1. Mold core assembly; 1-1. Feed seat; 1-2. Feed port; 1-3. Cavity; 1-4. Connecting channel; 1-5. Fan-shaped channel; 2. Mold body; 3. Mold sleeve; 4. Discharge assembly; 4-1. Mold nozzle; 4-2. Mold wrist. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-2The utility model provides a technical solution: a five-layer co-extrusion internal cooling die head, comprising a core component 1; a die body 2 is sleeved on the outside of the core component 1; four die sleeves 3 are provided, which are located between the core component 1 and the die body 2, and are sequentially sleeved on the outside of the core component 1, and five feeding channels are formed between the four die sleeves 3 and the outer wall of the core component 1 and the inner wall of the die body 2; a discharge component 4 is provided at the upper end of the die sleeve 3 and the core component 1, and is connected with the five feeding channels; when in use, the melt is fed through the core component 1, and the melt enters the five feeding channels formed between the four die sleeves 3 and the outer wall of the core component 1 and the inner wall of the die body 2 from the core component 1 for feeding and extrusion, and finally the extruded melt is discharged through the discharge component 4 to form a film, thereby realizing the extrusion of the melt into a film.

[0021] Specifically, the core assembly 1 includes a feed seat 1-1, which is provided with five feed ports 1-2, and five cavities 1-3 are provided on the inner side of the feed seat 1-1. Connecting channels 1-4 are provided between the five cavities 1-3 and the five feed ports 1-2 respectively. The feed seat 1-1 is provided with a number of fan-shaped channels 1-5 connected with the cavity 1-3, and the five layers of fan-shaped channels 1-5 are connected with the five feed channels respectively. When the five-layer co-extrusion internal cooling die is actually used, the melt enters the connecting channel 1-4, the cavity 1-3, the fan-shaped channel 1-5 in turn through the feed port 1-2, and then enters the feed channel. After the melt enters the cavity 1-3, it is fed from multiple fan-shaped channels 1-5, which ensures the uniformity of the melt entering the feed channel, effectively avoids the problem of uneven thickness of the film, and ensures the quality of the product.

[0022] Specifically, the discharge component 4 includes a die nozzle 4-1 arranged on the core component 1 and a die arm 4-2 arranged on the mold body 2. A discharge channel connected to five feed channels is formed between the die nozzle 4-1 and the die arm 4-2. When in use, the melt in the five feed channels is extruded and discharged through the discharge channel formed between the die nozzle 4-1 and the die arm 4-2, thereby realizing the discharge of a five-layer co-extrusion internal cooling die head.

[0023] Specifically, the bottoms of the four mold sleeves 3 are arranged downward in a stepped manner. The stepped arrangement of the four mold sleeves 3 facilitates the connection between several fan-shaped channels 1-5 on the same layer and the corresponding feed channels, thereby realizing feeding into the feed channels in multiple directions and ensuring the uniformity of the melt entering the feed channels.

[0024] Specifically, the connecting channel 1-4 is connected to the center of the bottom of the cavity 1-3. The connection between the connecting channel 1-4 and the bottom of the cavity 1-3 ensures the uniformity of the melt entering the fan-shaped channel 1-5.

[0025] Specifically, the cross section of the fan-shaped channel 1-5 is set to be trapezoidal, and the melt enters the feed channel evenly through the trapezoidal channel of the fan-shaped channel 1-5, thereby ensuring the uniformity of the melt entering the feed channel.

[0026] Working principle: During use of the utility model, the melt enters the connecting channel 1-4 and the cavity 1-3 in sequence through the feed port 1-2, and the melt in the cavity 1-3 enters the corresponding feed channel through multiple fan-shaped channels 1-5, and the extruded melt is discharged through the discharge component 4 to form a film.

[0027] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0028] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0029] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A five-layer co-extrusion internal cooling die head, characterized in that: include: Core assembly (1); A mold body (2) is sleeved on the outer side of the mold core assembly (1); Four mold sleeves (3) are provided, located between the mold core assembly (1) and the mold body (2), and are sequentially sleeved on the outer side of the mold core assembly (1), and five feeding channels are formed between the four mold sleeves (3), the outer wall of the mold core assembly (1), and the inner wall of the mold body (2); A discharge assembly (4) is arranged at the upper end of the mold sleeve (3) and the mold core assembly (1), and is in communication with the five feed channels; The core assembly (1) includes a feed seat (1-1), the feed seat (1-1) is provided with five feed ports (1-2), the inner side of the feed seat (1-1) is provided with five cavities (1-3), and connecting channels (1-4) are provided between the five cavities (1-3) and the five feed ports (1-2). The feed seat (1-1) is provided with a plurality of fan-shaped channels (1-5) connected to the cavities (1-3), and the five fan-shaped channels (1-5) are respectively connected to the five feed channels.

2. A five-layer co-extrusion internal cooling die according to claim 1, characterized in that: The discharge assembly (4) comprises a die nozzle (4-1) arranged on the die core assembly (1) and a die arm (4-2) arranged on the die body (2); a discharge channel connected to five feed channels is formed between the die nozzle (4-1) and the die arm (4-2).

3. The five-layer co-extrusion internal cooling die according to claim 1, characterized in that: The bottoms of the four mold sleeves (3) are arranged downward in a stepped manner.

4. The five-layer co-extrusion internal cooling die according to claim 1, characterized in that: The connecting channel (1-4) is connected to the bottom center of the cavity (1-3).

5. The five-layer co-extrusion internal cooling die according to claim 1, characterized in that: The cross section of the fan-shaped channel (1-5) is set to be trapezoidal.

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