CN115837758A - Rib cladding sheet die head - Google Patents

Abstract

The technical scheme includes that the rib cladding sheet die head comprises an upper die body, a lower die body and an upper die lip connected to the top surface of the front end of the upper die body, a line passing plate is arranged between the upper die lip and the upper die body along the width direction, the line passing plate comprises a first line passing plate and a second line passing plate which are arranged in parallel from front to back, a plurality of rib holes corresponding to the front and the back are formed in the first line passing plate and the second line passing plate at intervals, a feeding hole is formed in the lower die body, a feeding channel is arranged between the upper die body and the lower die body, the outlet position of the feeding channel is located between the first line passing plate and the second line passing plate, and an extrusion channel is formed between the upper die lip in front of the first line passing plate and the lower die body. The rib plate adjusting device is novel in structure, ribs can be replaced without detaching the upper die body and the lower die body, only the wire passing plate needs to be replaced when the space between the ribs needs to be adjusted, and the adjusting mode is simple and reliable.

Description

Rib coated sheet die

technical field

The invention relates to an extrusion die head, in particular to a rib-coated sheet die head.

Background technique

At present, in order to improve multiple physical properties of ordinary films, it is necessary to add ribs such as glass fiber to the film. The existing rib-coated sheet dies are all ribs inside the mold cavity. Once the ribs If there is a problem, the upper and lower molds in the overall mold must be disassembled and cleaned before they can be changed. In addition, if you want to adjust the spacing of the ribs, etc., you need to make a new set of guide rollers, and the processing cost is relatively high.

Contents of the invention

In view of the above problems, the present invention aims to provide a rib-coated sheet die head, which can replace the ribs without disassembling the upper and lower molds, and facilitates the adjustment of the spacing of the ribs.

The technical solution of the present invention is a rib-coated sheet die head, comprising an upper mold body, a lower mold body and an upper mold lip connected to the top surface of the front end of the upper mold body, between the upper mold lip and the upper mold body A wire guide board is provided along the width direction, and the wire guide board includes a first wire guide board and a second wire guide board arranged in parallel from front to back, and the first wire guide board and the second wire guide board are spaced apart A plurality of rib holes corresponding to the front and back are provided, a feed port is opened on the lower mold body, a feed channel is provided between the upper mold body and the lower mold body, and the outlet position of the feed channel is located at the first An extrusion channel is formed between the first wire passing board and the second wire passing board, and between the upper die lip and the lower die body in front of the first wire passing board.

Preferably, the height of the position close to the first wire passing plate in the extrusion channel is in a structure of gradually decreasing from the back to the front, and the height of the front section of the extrusion channel is flat.

Preferably, the rib holes on the first wire passing board and the second wire passing board are located at the lower position, and the positions of the rib holes on the front and rear two wire passing boards correspond to each other, and the upper part of the first wire passing board Melting passage holes are arranged at intervals along the width direction of the position.

Preferably, the feed channel includes a low-pressure zone close to the feed inlet and a high-pressure zone close to the outlet, a pressure transition zone is provided between the low-pressure zone and the high-pressure zone, and the height of the pressure transition zone is from rear to The front presents a gently decreasing structure.

Preferably, the rib holes on the first wire guide plate and the second wire guide plate are evenly arranged at equal intervals along the width direction thereof.

The invention has a novel structure, and the ribs can be replaced without disassembling the upper mold body and the lower mold body. When the spacing of the ribs needs to be adjusted, only the wire passing plate needs to be replaced, and the adjustment method is simple and reliable.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram of another perspective of the present invention;

Fig. 3 is a sectional view of a cross-sectional structure of the present invention;

Fig. 4 is a schematic diagram of the structure between the front of Fig. 3 and the roller;

Among them: 1—upper mold body; 2—lower mold body; 3—upper die lip; 4—wire passing board; 41—first wire passing board; 42—second wire passing board; 43—rib hole; 44— Melt passage hole; 5—feed inlet; 6—feed channel; 61—low pressure area; 62—high pressure area; 63—pressure transition area; 7—extrusion channel.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 3, the present invention provides a rib-coated sheet die head, comprising an upper die body 1, a lower die body 2 and an upper die lip 3 connected to the top surface of the front end of the upper die body 1, Between the upper die lip 3 and the upper die body 1, a wire guide plate 4 is arranged along the width direction, and the wire guide plate 4 includes a first wire guide plate 41 and a second wire guide plate arranged in parallel from front to back 42, the first wire passing board 41 and the second wire passing board 42 are provided with a plurality of front and rear corresponding rib holes 43 at intervals, the lower mold body 2 is provided with a feed port 5, and the upper mold body 1 and the lower mold body 2 is provided with a feed channel 6, the outlet position of the feed channel 6 is located between the first wire guide plate 41 and the second wire guide plate 42, the front of the first wire guide plate 41 An extrusion channel 7 is formed between the upper die lip 3 and the lower die body 2.

On the basis of the above solution, the height of the extrusion channel 7 close to the first wire passing plate 41 is in a structure that gradually decreases from the back to the front, and the height of the front section of the extrusion channel 7 is flat.

Specifically, the rib holes 43 on the first wire passing board 41 and the second wire passing board 42 are located in the lower section, and the positions of the rib holes 43 on the two front and rear wire passing boards correspond one to one. Melt passage holes 44 are spaced along the width direction of the upper portion of the wire passing plate 41 .

In addition, the feed channel 6 includes a low-pressure zone 61 near the feed inlet 5 and a high-pressure zone 62 near the outlet. A pressure transition zone 63 is provided between the low-pressure zone 61 and the high-pressure zone 62. The pressure transition The height of the region 63 presents a structure that gradually decreases from the back to the front.

Further, the rib holes 43 on the first wire passing board 41 and the second wire passing board 42 are evenly arranged at equal intervals along the width direction thereof.

During use, the molten film raw material enters from the feed port 5, enters the feed channel 6 between the upper mold body 1 and the lower mold body 2, and enters the first high pressure zone 61 after passing through the low pressure zone 61, the pressure transition zone 63 and the high pressure zone 62. Between the first wire passing board 41 and the second wire passing board 42, the molten film raw material enters the extrusion channel 7 from the melt channel hole 44, and at the same time, ribs made of glass fiber and the like pass through the first mold body 1 above. The rib holes 43 in the lower section of the wire passing board 41 and the second wire passing board 42 pass through in an orientation, and the number and spacing of the ribs are determined by the rib holes 43 in the lower section of the first wire passing board 41 and the second wire passing board 42 as required. Adjusting, ribs and melted film raw materials are mixed into a covering sheet in the extrusion channel 7, and extruded from the extrusion channel 7, and enter the rear surface of the roller for winding.

The above is only a preferred embodiment of the present invention, and is not intended to limit the invention in any form. Any simple modifications, equivalent changes or modifications made to the above embodiments according to the technical principles of the present invention still belong to this invention. within the scope of the technical solution of the invention.

Claims (5)

1. The utility model provides a muscle strip cladding sheet die head which characterized in that: including last die body (1), lower die body (2) and connect last die lip (3) at last die body (1) front end top surface, go up die lip (3) and be provided with between last die body (1) along width direction and cross line board (4), cross line board (4) and include by going to first crossing line board (41) and the second of back twice parallel arrangement and cross line board (42), first crossing line board (41) and second cross line board (42) and go up the interval and be provided with rib hole (43) that correspond around a plurality of, feed inlet (5) have been seted up on die body (2) down, upward be provided with between die body (1) and the lower die body (2) feed channel (6), the exit position of feed channel (6) is located first crossing between line board (41) and the second and crosses between line board (42), form between last die lip (3) in first crossing line board (41) the place ahead and the lower die body (2) and extrude passageway (7).

2. The rib-cladding sheet die head of claim 1, wherein: the height of the position, close to the first wire passing plate (41), in the extrusion channel (7) is of a structure which is gradually reduced from back to front, and the height of the front section area of the extrusion channel (7) is kept flat.

3. The rib-cladding sheet die head of claim 1, wherein: the first wire passing plate (41) and the second wire passing plate (42) are provided with rib holes (43) at lower sections, the rib holes (43) on the front wire passing plate and the rear wire passing plate are in one-to-one correspondence, and the upper section of the first wire passing plate (41) is provided with melt passage holes (44) at intervals along the width direction.

4. The rib-cladding sheet die head of claim 1, wherein: the feeding channel (6) comprises a low-pressure area (61) close to the position of the feeding hole (5) and a high-pressure area (62) close to the position of the outlet, a pressure transition area (63) is arranged between the low-pressure area (61) and the high-pressure area (62), and the height of the pressure transition area (63) is gradually reduced from back to front.

5. The rib-cladding sheet die head of claim 1, wherein: the rib holes (43) on the first wire passing plate (41) and the second wire passing plate (42) are uniformly arranged at equal intervals along the width direction of the first wire passing plate and the second wire passing plate.

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