CN219667399U - Multilayer single-sided slotting co-extrusion die - Google Patents
Multilayer single-sided slotting co-extrusion die Download PDFInfo
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- CN219667399U CN219667399U CN202321010407.3U CN202321010407U CN219667399U CN 219667399 U CN219667399 U CN 219667399U CN 202321010407 U CN202321010407 U CN 202321010407U CN 219667399 U CN219667399 U CN 219667399U
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- 238000001125 extrusion Methods 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 21
- 239000012768 molten material Substances 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 3
- 239000011091 composite packaging material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to the field of extrusion die devices for producing co-extrusion films, in particular to a multilayer single-sided slotting co-extrusion die which comprises an upper die body, a lower die body and mounting bolts, wherein matched mounting surfaces are processed on the upper die body and the lower die body, a die material annular cavity is processed in the center of the upper die body and the center of the lower die body, the upper die body is arranged on the upper part of the lower die body and is in sealing contact with the lower die body through the matched mounting surfaces processed on the upper die body, an annular inner conical surface with high outside and low inside is processed on the upper die body and the lower die body at the position close to the peripheral ring of the die material annular cavity, and a spiral runner is formed on the annular inner conical surface in a spiral mode.
Description
Technical Field
The utility model relates to the field of extrusion die devices for producing co-extrusion films, in particular to a multilayer single-sided slotting co-extrusion die.
Background
The multilayer coextrusion blow molding is a forming method of multilayer composite products, and specifically, the coextrusion compounding process adopts two or more extruders to respectively melt and extrude resins with different functions, and the resins are converged in a die head through respective runners and then are compounded together through inflation and cooling. The process not only greatly simplifies the production process, but also has less material consumption, and can reduce the raw material consumption and the production cost; compared with other processes, the production cost of the composite packaging material with the same structure can be saved by 30%, the multilayer single-sided slotting co-extrusion die is an actuating mechanism for extruding the co-extrusion film material, when the composite packaging material is installed and used, extrusion materials flow out through a raw material runner formed by buckling corresponding single-sided slotting co-extrusion die bodies, the existing multilayer single-sided slotting co-extrusion die cannot be uniformly distributed around a material annular cavity due to the design and processing problems of the runner structure, and further the thickness of the extruded film bubble wall is uneven, so that the subsequent production quality of a multilayer co-extrusion film product is affected.
Disclosure of Invention
The utility model aims to provide a multilayer single-sided slotting co-extrusion die, which has scientific overall structural design, and the melt materials in the multilayer single-sided slotting co-extrusion die can be uniformly distributed around a die material annular cavity in the extrusion operation process by processing and designing a material runner with a novel structure on a die body, so that the uniformity of the thickness of a film bubble wall after extrusion is ensured, the production quality of a subsequent extrusion die is ensured, and the production and use requirements of enterprises are met.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a multilayer single face fluting coextrusion die, includes, goes up the die body, lower die body and mounting bolt, the structure of the two of last die body and lower die body the same, all process the cooperation installation face that cooperatees on last die body and lower die body, it has the mould material ring chamber to process at the center of last die body and lower die body, go up the die body and install the upper portion of arranging the lower die body and through the cooperation installation face sealing contact of processing on it, it has the mounting hole to correspond to process on last die body and lower die body, mounting bolt installs in the mounting hole and sticiss the two of last die body, lower die body together, it has the runner groove to process on the cooperation installation face of last die body and lower die body, the runner groove extend into mould material ring chamber by the outside of last die body, the lower die body, the entrance processing of runner groove has the main cutting edge that equally divides, the main cutting edge that equally divides form on the body of last die body, lower die body.
The flow channel groove can be divided into a primary flow channel, a secondary flow channel and a spiral flow channel, the primary flow channel is communicated with the secondary flow channel, the secondary flow channel is communicated with the spiral flow channel, and the main uniform dividing cutting edge is formed at the inlet of the primary flow channel.
Further, an auxiliary equally dividing cutting edge is formed at the position of the engagement opening between the primary runner and the secondary runner, and the auxiliary equally dividing cutting edge, the upper die body and the lower die body are of an integrated structure.
Furthermore, the auxiliary equally dividing cutting edges can equally divide a group of main flow passages into two groups of secondary flow passages.
Further, annular inner conical surfaces with high outer parts and low inner parts are processed at the positions of the upper die body and the lower die body, which are close to the circumferential ring of the die material annular cavity, and the spiral runner is formed on the annular inner conical surfaces in a spiral mode.
Further, arc-shaped inclined tables are processed on two sides of the main equipartition cutting edges and the auxiliary equipartition cutting edges, and the arc-shaped inclined tables are formed by uniformly and smoothly transition from low to high.
Further, an included angle gap is formed between the spiral runner in the upper die body and the spiral runner in the lower die body, and the molten material can uniformly spread to the inner side wall of the annular cavity of the die material through the included angle gap between the upper die body and the lower die body.
The beneficial effects of the utility model are as follows: the multilayer single-sided slotting co-extrusion die has scientific overall structural design, and has the following technical characteristics and advantages compared with the prior multilayer single-sided slotting co-extrusion die body structure:
1. the uniform diffusion of the molten materials can be realized; compared with the existing multilayer single-sided slotting co-extrusion die body structure, the utility model has the advantages that the annular inner conical surfaces with high outside and low inside are processed at the positions, close to the circumferential positions of the die material annular cavity, on the upper die body and the lower die body, and the spiral flow passage is formed on the annular inner conical surface in a spiral manner;
2. the average diversion of the molten materials can be realized: the multi-layer single-sided slotting co-extrusion die is provided with the equipartition cutting edges at the positions of the inlet of the primary runner and the junction between the primary runner and the secondary runner, and the equipartition cutting edges can uniformly cut and split the molten materials in the runner, so that the equipartition of the molten materials in the runner is effectively ensured, and a reliable precondition is provided for the uniform diffusion of the subsequent molten materials.
Drawings
FIG. 1 is a schematic illustration of a single overall structure of a coextrusion die of the present utility model;
FIG. 2 is a schematic illustration of a single top view of a coextrusion die of the present utility model;
FIG. 3 is a schematic view of a single cross-sectional structure of a coextrusion die of the present utility model;
FIG. 4 is a schematic overall cross-sectional view of the co-extrusion die of the present utility model;
FIG. 5 is a schematic view of a part of the structure of the present utility model;
FIG. 6 is a schematic diagram of a part of the structure of the second embodiment of the present utility model;
the reference numerals in the figures are: the die comprises a 1-upper die body, a 2-lower die body, a 21-matched mounting surface, a 22-die material annular cavity, a 23-mounting hole, a 24-arc-shaped inclined table, a 25-primary runner, a 26-secondary runner, a 27-spiral runner, a 28-main equipartition cutting edge and a 29-auxiliary equipartition cutting edge.
Description of the embodiments
In order to make the technical solution of the present utility model better understood by those skilled in the art, the present utility model is further described in detail below with reference to the drawings and the detailed description, and it should be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly or indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "left" and "right" used in the present document to indicate orientation are each based on the specific structure shown in the drawings, and do not constitute a limitation on the structure.
Specific example 1: as shown in fig. 1 and 2 of the specification of the present utility model, the multilayer single-sided slotting co-extrusion die provided by the present utility model mainly includes an upper die body 1, a lower die body 2 and a mounting bolt, wherein, when the structures of the upper die body 1 and the lower die body 2 are the same, the upper die body 1 and the lower die body 2 are both processed and arranged with matched mounting surfaces 21, the matched mounting surfaces 21 are smooth plane structures, meanwhile, the centers of the upper die body 1 and the lower die body 2 are processed with a die material ring cavity 22 adapting to the confluence of molten materials, the upper die body 1 is arranged at the upper part of the lower die body 2 and is in sealing contact with the matched mounting surfaces 21 processed on the lower die body 2, the upper die body 1 and the lower die body 2 are correspondingly processed with mounting holes 23 adapting to the mounting bolts, when the upper die body 1 and the lower die body 2 are compressed together, the upper die body 1 and the lower die body 2 are processed with grooves, the runner grooves are processed on the matched mounting surfaces 21, the runner grooves are used for conducting flow guiding and dispersing the molten materials, the runner grooves are evenly distributed by the upper die body 1 and the lower die body 2, and the main edges 28 are cut evenly and divided by the upper die body 2, and the main edges of the main die body is cut at the positions of the upper die body 2, and the main edges of the main die body is cut and the main edges of the main die body is cut at the edges 28.
As shown in fig. 2 of the specification of the present utility model, the flow channel grooves for guiding and dispersing the molten material can be divided into a primary flow channel 25, a secondary flow channel 26 and a spiral flow channel 27, wherein the primary flow channel 25 is communicated with the secondary flow channel 26, the secondary flow channel 26 is communicated with the spiral flow channel 27, a primary uniform cutting edge 28 is formed at the inlet of the primary flow channel 25, a secondary uniform cutting edge 29 is formed at the position of the junction between the primary flow channel 25 and the secondary flow channel 26, the secondary uniform cutting edge 29 can uniformly divide one group of primary flow channels 25 into two groups of secondary flow channels 26, and the secondary uniform cutting edge 29 can cut the molten material entering the secondary flow channel 26 from the primary flow channel 25, and the secondary uniform cutting edge 29, the upper die body 1 and the lower die body 2 are of an integral structure.
As shown in fig. 4 of the present utility model, annular inner conical surfaces with high outside and low inside are processed on the upper die body 1 and the lower die body 2 at the positions close to the circumference of the die material annular cavity 22, and spiral flow passages 27 for guiding and diffusing the molten material are formed on the annular inner conical surfaces in a spiral shape. Arc-shaped inclined tables 24 are processed on two sides of the main equipartition cutting edges 28 and the auxiliary equipartition cutting edges 29, and the arc-shaped inclined tables 24 are formed in a smooth and uniform transition mode from low to high. An included angle gap is formed between the spiral runner 27 in the upper die body 1 and the spiral runner 27 in the lower die body 2, and in operation, molten materials can uniformly spread to the inner side wall of the die material annular cavity 22 through the included angle gap between the upper die body 1 and the lower die body 2.
The processing and mounting process and working process of the multilayer single-sided slotting co-extrusion die in specific mounting and use are as follows: 1. the processing process is as follows:
the processing personnel can process the matched mounting surfaces 21 on the upper die body 1 and the lower die body 2, then process the die material annular cavity 22 on the upper die body 1 and the lower die body 2, and process the annular conical surface at the middle position close to the die material annular cavity 22, at this time, the processing personnel can process the primary runner 25 and the secondary runner 26 on the matched mounting surfaces 21, process the spiral runner 27 on the annular conical surface, simultaneously ensure that three groups of runners of the primary runner 25, the secondary runner 26 and the spiral runner 27 are in a communicating state, process the primary uniform cutting edge 28 and the arc-shaped inclined table 24 at the inlet of the primary runner 25, process the secondary uniform cutting edge 29 and the arc-shaped inclined table 24 at the transition part of the primary runner 25 and the secondary runner 26, process the mounting holes 23 on the upper die body 1 and the lower die body 2, and after the processing is finished, the processing personnel can mount the upper die body 1 and the lower die body 2 together through mounting bolts;
2. the use process is as follows:
when the device is used, an external feeding pipeline is connected into a feeding port of the primary runner 25, molten materials are uniformly divided into two paths through the primary uniform dividing cutting edges 28 at the inlet of the primary runner 25, and are uniformly divided again by the secondary uniform dividing cutting edges 29 at the joint of the primary runner 25 and the secondary runner 26, the uniform dividing cutting edges can uniformly divide the molten materials in the runners, so that uniform dividing of the molten materials in the runners is effectively ensured, reliable pre-conditions are provided for uniform diffusion of the subsequent molten materials, then the molten materials enter the spiral runner 27 through the secondary runner 26, the spiral runner 27 can guide the molten materials, and the molten materials can be uniformly diffused towards the annular cavity 22 of the die material, so that uniformity of thickness of the extruded film bubble walls is ensured.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.
Claims (7)
1. The utility model provides a multilayer single face fluting coextrusion die which characterized in that, including last mould body (1), lower mould body (2) and mounting bolt, last mould body (1) and the structure of lower mould body (2) the same, all process on last mould body (1) and lower mould body (2) and have matched with cooperation installation face (21), the center processing of last mould body (1) and lower mould body (2) has mould material ring chamber (22), the upper mould body (1) installs and arranges in the upper portion of lower mould body (2) and through the cooperation installation face (21) sealing contact of processing on it, correspond processing on last mould body (1) and lower mould body (2) have mounting hole (23), the mounting bolt is installed in mounting hole (23) and is in pressing together last mould body (1), lower mould body (2) two, have the runner groove on last mould body (1) and the cooperation installation face (21) of lower mould body (2), the runner groove by last mould body (1), the outside ring of last mould body (2) both stretches into the cutting edge (28) of the main mould body (28) of cutting edge of cutting in the body (2).
2. The multi-layer single-sided slotting co-extrusion die according to claim 1, wherein the runner slot is divided into a primary runner (25), a secondary runner (26) and a spiral runner (27), the primary runner (25) is communicated with the secondary runner (26), the secondary runner (26) is communicated with the spiral runner (27), and the primary uniform-dividing cutting edge (28) is formed at the inlet of the primary runner (25).
3. The multilayer single-sided slotting co-extrusion die according to claim 2, further characterized in that a secondary equipartition cutting edge (29) is formed at the position of a junction between the primary runner (25) and the secondary runner (26), and the secondary equipartition cutting edge (29) and the upper die body (1) and the lower die body (2) are of an integrated structure.
4. A multi-layer single-sided slotting co-extrusion die according to claim 3, further characterized in that said secondary dividing cutting edges (29) divide a set of primary runners (25) equally into two sets of secondary runners (26).
5. The multi-layer single-sided slotting co-extrusion die according to claim 2, further characterized in that annular inner conical surfaces with high outer sides and low inner sides are processed on the upper die body (1) and the lower die body (2) at the positions close to the periphery of the die material annular cavity (22), and the spiral runner (27) is formed on the annular inner conical surfaces in a spiral mode.
6. A multi-layer single-sided slotting co-extrusion die as in claim 3 further characterized in that arc-shaped ramps (24) are machined on both sides of the main dividing cutting edges (28) and the auxiliary dividing cutting edges (29), said arc-shaped ramps (24) being formed by a smooth and uniform transition from low to high.
7. The multi-layer single-sided slotting co-extrusion die according to claim 5, further characterized in that an included angle gap is formed between the spiral runner (27) in the upper die body (1) and the spiral runner (27) in the lower die body (2), and molten materials can uniformly spread to the inner side wall of the die material annular cavity (22) through the included angle gap between the upper die body (1) and the lower die body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321010407.3U CN219667399U (en) | 2023-04-28 | 2023-04-28 | Multilayer single-sided slotting co-extrusion die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321010407.3U CN219667399U (en) | 2023-04-28 | 2023-04-28 | Multilayer single-sided slotting co-extrusion die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219667399U true CN219667399U (en) | 2023-09-12 |
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ID=87923338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321010407.3U Active CN219667399U (en) | 2023-04-28 | 2023-04-28 | Multilayer single-sided slotting co-extrusion die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219667399U (en) |
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2023
- 2023-04-28 CN CN202321010407.3U patent/CN219667399U/en active Active
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