Film blowing mold for five-layer co-extrusion

Abstract

The utility model discloses a film blowing die for five-layer co-extrusion. The film blowing die comprises a base, the main mold column is fixedly mounted on the base; the die head is arranged at the upper end of the main die column; the multiple material discs are installed on the main die column in a sleeving mode. The upper fixed disc is mounted on the main die column in a sleeving manner and is positioned above the top-layer material disc; the mold cover is mounted on the upper fixed disc; the four locking rods are evenly distributed at the bottom of the upper fixing disc, and the bottoms of the locking rods sequentially penetrate through the multiple material discs and stretch into the inner side of the base. The utility model relates to the technical field of co-extrusion dies, the four locking rods at the bottom of the upper fixing disc sequentially penetrate through a plurality of material discs and extend into the inner side of the base, the four locking rods are locked through the locking assemblies, and the locking assemblies are arranged on the base in an opposite mode and lock the bottoms of the two locking rods. And an original bolt connecting and fixing mode is replaced, so that the tray mold is convenient to detach and mount, and trouble and labor are saved.

Description

Technical Field

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

[0002] In the production process of greenhouse film, the plastic particles are heated and melted through a five-layer co-extrusion mold and then blown into a film.

[0003] At present, in the use of a five-layer co-extrusion mold, in order to ensure that the co-extrusion molds are tightly connected and prevent unnecessary gaps, in the existing technology, each adjacent layer of the tray mold is fixed by multiple sets of bolts. However, the bolt connection and fixation method makes it cumbersome, time-consuming and labor-intensive to remove the mold. Therefore, a five-layer co-extrusion blown film mold is provided; Utility Model Content

[0004] The purpose of the utility model is to provide a five-layer co-extrusion blown film die to solve the problem that the die removal is complicated, time-consuming and labor-intensive due to the fixing method of bolt connection.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a five-layer co-extrusion blown film die, comprising:

[0006] base;

[0007] A main mold column is fixedly mounted on the base;

[0008] A die head is provided at the upper end of the main die column;

[0009] There are several material trays, all of which are sleeved and mounted on the main mold column;

[0010] The upper fixed plate is sleeved and mounted on the main mold column and is located above the material tray on the top layer;

[0011] A mold cover is mounted on the upper fixed plate;

[0012] There are four locking rods, evenly distributed at the bottom of the upper fixed plate, and the bottoms of the locking rods sequentially penetrate the plurality of material trays and extend into the inner side of the base;

[0013] There are two groups of locking components, which are arranged on the base relative to each other. Each group of locking components locks the bottoms of the two locking rods.

[0014] Preferably, the locking assembly includes a cavity arranged in the base, an eccentric wheel is rotatably installed inside the cavity, a rotating rod is provided at the rotating shaft end of the eccentric wheel, an arc-shaped resistance plate is slidably installed inside the cavity, a spring is provided between the arc-shaped resistance plate and the inner wall of the cavity, limit blocks are provided at both ends of the arc-shaped resistance plate, and the bottom of the locking rod extends into the cavity and is provided with a limit opening adapted to the limit block.

[0015] Preferably, the abutting end of the limiting block is configured as an arc-shaped surface, and the limiting opening is configured as a triangular opening.

[0016] Preferably, a fan-shaped opening is provided at the bottom of the base, and the end of the rotating rod extends out of the fan-shaped opening and is provided with a hand-held portion.

[0017] Preferably, the upper end of each material tray and the upper end of the base are provided with several positioning blocks, and the lower end of each material tray and the lower end of the upper fixed plate are provided with positioning grooves, and the positioning grooves located above are adapted to the positioning blocks located below.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is a five-layer co-extrusion blown film mold. When installing and disassembling the material tray mold, several material trays are installed on the main mold column, and four locking rods at the bottom of the upper fixed plate are passed through the several material trays in turn and extend into the inner side of the base, and the four locking rods are locked by the locking assembly, replacing the original bolt connection and fixing method, which facilitates the demolding and installation of the material tray mold and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the bottom cross-sectional structure of the present utility model;

[0021] Figure 3 This is a schematic diagram of the bottom-up structure of the present invention;

[0022] Figure 4 for Figure 1 Schematic diagram of the local enlarged structure at point A.

[0023] In the figure: 1. Base; 2. Main mold column; 3. Die head; 4. Material tray; 5. Upper fixed plate; 6. Die cover; 7. Locking rod; 8. Locking assembly; 8-1. Cavity; 8-2. Eccentric wheel; 8-3. Rotating rod; 8-4. Arc-shaped contact plate; 8-5. Spring; 8-6. Limit block; 8-7. Limit opening; 8-8. Fan-shaped opening; 8-9. Handle; 9. Positioning block; 10. Positioning groove. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-4 The utility model provides a technical solution: a five-layer co-extrusion blown film mold, comprising a base 1; a main mold column 2 fixedly mounted on the base 1; a die head 3 arranged at the upper end of the main mold column 2; a plurality of material trays 4 are provided, and are all sleeved and mounted on the main mold column 2; an upper fixed disk 5 is sleeved and mounted on the main mold column 2 and is located above the top material tray 4; a mold cover 6 is mounted on the upper fixed disk 5; four locking rods 7 are provided, evenly distributed at the bottom of the upper fixed disk 5, and the bottoms of the locking rods 7 sequentially penetrate the plurality of material trays 4 and extend into the inner portion of the base 1 side; there are two groups of locking components 8, which are relatively arranged on the base 1, and each group of locking components 8 locks the bottom of the two locking rods 7. When installing and disassembling the tray mold 4, several trays 4 are installed on the main mold column 2, and the four locking rods 7 at the bottom of the upper fixed plate 5 are passed through the several trays 4 in turn and extend into the inner side of the base 1, and the four locking rods 7 are locked by the locking components 8, which replaces the original bolt connection and fixing method, facilitates the demolding and installation of the tray mold, and saves time and effort.

[0026] Specifically, the locking assembly 8 includes a cavity 8-1 arranged in the base 1, an eccentric wheel 8-2 is rotatably installed inside the cavity 8-1, a rotating rod 8-3 is provided at the rotating shaft end of the eccentric wheel 8-2, an arc-shaped contact plate 8-4 is slidably installed inside the cavity 8-1, and a spring 8-5 is provided between the arc-shaped contact plate 8-4 and the inner wall of the cavity 8-1. The spring 8-5 is provided to reset the arc-shaped contact plate 8-4 and the limit block 8-6. Both ends of the arc-shaped contact plate 8-4 are provided with limit blocks 8-6. The bottom of the locking rod 7 extends into the cavity 8-1 and is provided with a limit opening 8-7 adapted to the limit block 8-6. When in use, the eccentric wheel 8-2 is driven to rotate by rotating the rotating rod 8-3, and the arc-shaped contact plate 8-4 and the limit block 8-6 are driven by the eccentric wheel 8-2 to move inside the cavity 8-1, so that the limit block 8-6 is connected with the limit block 8-7, thereby locking the locking rod 7.

[0027] Specifically, the abutting end of the limit block 8-6 is set as an arc-shaped surface, and the limit opening 8-7 is set as a triangular opening. When in use, the arc-shaped surface of the limit block 8-6 abuts against the inclined surface of the limit block 8-7, and moves relatively along the inclined surface of the limit opening 8-7, thereby realizing locking of several material trays 4, enhancing the overall connectivity of the five-layer co-extrusion mold, and improving the connection strength between the material tray molds.

[0028] Specifically, a fan-shaped opening 8-8 is provided at the bottom of the base 1, and the end of the rotating rod 8-3 extends out of the fan-shaped opening 8-8 and is provided with a hand-held portion 8-9. The fan-shaped opening 8-8 is used as a space for the rotating rod 8-8 to rotate. By providing the hand-held portion 8-9, it is convenient for the user to drive the rotating rod 8-8 to rotate and drive the locking assembly 8 to lock.

[0029] Specifically, the upper end of each material tray 4 and the upper end of the base 1 are provided with several positioning blocks 9, and the lower end of each material tray 4 and the lower end of the upper fixed plate 5 are provided with a positioning groove 10. The upper positioning groove 10 is adapted to the lower positioning block 9. During installation, the material tray 4 is installed on the base in turn, and the upper fixed plate 5 is installed on the material tray 4 on the top layer. The positioning blocks 9 are matched with the positioning grooves 10 for installation, which facilitates the positioning and installation of the material tray 4.

[0030] Working principle: During the use of the utility model, when disassembling, first remove the die head 3 from the main mold column 2, open the locking assembly 8 to lock the locking rod 7, drive the upper fixed plate 5 and the locking rod 7 to move upward and disengage from the material tray 4, and then the material tray 4 can be disassembled in turn, which facilitates the demolding of the material tray mold.

[0031] 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.

[0032] 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.

[0033] 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 blown film die, characterized in that: include: Base (1); A main mold column (2) is fixedly mounted on the base (1); A die head (3) is arranged at the upper end of the main die column (2); A plurality of material trays (4) are provided, and all are sleeved and mounted on the main mold column (2); An upper fixed plate (5) is sleeved and mounted on the main mold column (2) and is located above the material plate (4) on the top layer; A mold cover (6) is mounted on the upper fixed plate (5); Four locking rods (7) are provided and evenly distributed on the bottom of the upper fixed plate (5), and the bottoms of the locking rods (7) sequentially penetrate the plurality of material plates (4) and extend into the inner side of the base (1); The locking components (8) are provided in two groups and are arranged on the base (1) in a relative manner. Each group of the locking components (8) locks the bottoms of the two locking rods (7).

2. The five-layer co-extrusion blown film die according to claim 1, characterized in that: The locking assembly (8) comprises a cavity (8-1) arranged in the base (1), an eccentric wheel (8-2) is rotatably installed inside the cavity (8-1), a rotating rod (8-3) is provided at the rotating shaft end of the eccentric wheel (8-2), an arc-shaped contact plate (8-4) is slidably installed inside the cavity (8-1), a spring (8-5) is provided between the arc-shaped contact plate (8-4) and the inner wall of the cavity (8-1), and both ends of the arc-shaped contact plate (8-4) are provided with a limit block (8-6), and the bottom of the locking rod (7) extends into the cavity (8-1) and is provided with a limit opening (8-7) adapted to the limit block (8-6).

3. The five-layer co-extrusion blown film die according to claim 2, characterized in that: The abutting end of the limiting block (8-6) is configured as an arc-shaped surface, and the limiting opening (8-7) is configured as a triangular opening.

4. The five-layer co-extrusion blown film die according to claim 2, characterized in that: The bottom of the base (1) is provided with a fan-shaped opening (8-8), and the end of the rotating rod (8-3) extends out of the fan-shaped opening (8-8) and is provided with a hand-held portion (8-9).

5. The five-layer co-extrusion blown film die according to claim 1, characterized in that: The upper end of each material tray (4) and the upper end of the base (1) are provided with a plurality of positioning blocks (9), and the lower end of each material tray (4) and the lower end of the upper fixed plate (5) are provided with positioning grooves (10), and the positioning grooves (10) located above are adapted to the positioning blocks (9) located below.

Images