Adjustable co-extrusion die for multiple layers of foamed cotton

Abstract

The adjustable co-extrusion die comprises a die cavity formed in a die head and a co-extrusion opening communicated with the die cavity, a plurality of separators are arranged in the die cavity and divide the die cavity into a plurality of flow channels, each flow channel is provided with an extrusion opening, the co-extrusion opening is communicated with the extrusion openings, and the co-extrusion opening is communicated with the extrusion openings. And the raw materials flowing through the different runners are extruded by the corresponding extrusion openings, are converged at the co-extrusion opening and are extruded. The foaming degree and the density of the product subjected to secondary extrusion are improved, so that higher requirements of customers are met.

Description

Technical Field

[0001] The invention relates to a mould, in particular to a multi-layer foamed cotton adjustable co-extrusion mould. Background Art

[0002] EPE pearl cotton is widely used in the packaging of electronics, home appliances, furniture, wine, gifts, daily necessities, glass products, ceramics, hardware, electromechanical and other products.

[0003] Because EPE pearl cotton is a completely independent bubble body, it has the characteristics of flexibility, light weight, and elasticity. However, in order for EPE pearl cotton to have the above characteristics, there is an indispensable link in the production process. It needs to be extruded through a mold during production to have good performance.

[0004] The common die head generally has a pressurized flow channel and an extrusion channel, and the extrusion channel has an extrusion port. The raw material pressurized by the pressurized flow channel is extruded from the extrusion port through the extrusion channel. For some common pearl cotton materials, the above process is sufficient to meet the requirements, but for some relatively thick materials, if direct extrusion is used, the foaming degree and density cannot meet the requirements. Therefore, the applicant has designed a multi-layer foamed cotton adjustable co-extrusion die to solve the above problem. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a multi-layer foamed cotton adjustable co-extrusion die.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A multi-layer foam adjustable co-extrusion die is characterized in that it includes a die cavity arranged in a die head and a co-extrusion port communicating with the die cavity, a plurality of partitions are arranged in the die cavity, the partitions divide the die cavity into a plurality of flow channels, and each of the flow channels has an extrusion port, the co-extrusion port is communicated with the extrusion port, and the raw materials flowing through different flow channels are extruded through the corresponding extrusion ports and then converged at the co-extrusion port and extruded.

[0008] It also includes a position adjustment mechanism for adjusting the front and rear positions of the partition in the mold cavity, the position adjustment mechanism includes an adjustment connecting plate, an adjustment hole relatively arranged on the die head, and an adjustment shaft rotatably matched with the adjustment hole, an eccentric portion is provided at the end of the adjustment shaft, a connecting hole one is provided on the adjustment connecting plate, a connecting rod passing through the die head is provided on the partition, the adjustment connecting plate is connected to the connecting rod and the eccentric portion is rotatably connected to the connecting hole one, and the adjustment shaft and the adjustment connecting plate can be locked to the die head by fasteners.

[0009] The end of the adjusting shaft is provided with a shaft head, the die head is provided with a countersunk hole concentric with the adjusting hole, the countersunk hole is provided with a shaft end piece, the end of the adjusting shaft can be abutted against the shaft end piece, the eccentric part is an eccentric sleeve sleeved on the shaft head, the eccentric sleeve is rotatably connected with the connecting hole, the shaft end piece is provided with an end piece hole, the shaft head is connected to the fastener through the end piece hole, and the adjusting shaft, the shaft end piece and the eccentric sleeve are fixed to the die head by fasteners.

[0010] It also includes a pressing ring, and the fastener locks the adjusting connecting plate on the shaft head through the pressing ring.

[0011] The mold cavity and the co-extrusion port are surrounded by two oppositely arranged side panels and a module, and also include a co-extrusion adjustment plate and an adjustment screw capable of adjusting the size of the co-extrusion port. The module is provided with a slot with a circular arc cross-section and a through hole that passes through the mold cavity. The co-extrusion adjustment plate is provided with a rotating column and an adjustment screw hole that rotatably cooperates with the slot. The rod of the adjustment screw is threadedly connected to the adjustment screw hole through the through hole.

[0012] The flow channel is in a tapered structure, gradually narrowing from the inlet of the flow channel to the extrusion outlet.

[0013] The adjusting connecting plate is provided with a second connecting hole, and the connecting rod is located in the second connecting hole.

[0014] The separator is provided with an oil hole 1, the connecting rod is provided with an inner hole communicating with the oil hole 1, and the oil pipe joint is connected with the oil hole 1 through the inner hole.

[0015] The separator is provided with a positioning groove, the end of the connecting rod is provided with a positioning block, and the end of the rotating shaft and the positioning block can be embedded in the positioning groove, and the oil hole 1 is communicated with the positioning groove.

[0016] An embedding groove is provided on the separator, and a gasket in contact with the inner wall of the mold cavity is provided in the embedding groove.

[0017] The beneficial effects of the present invention are as follows: the present invention comprises a mold cavity arranged in a die head and a co-extrusion port communicating with the mold cavity, a plurality of partitions are arranged in the mold cavity, the partitions divide the mold cavity into a plurality of flow channels, and each of the flow channels has an extrusion port, the co-extrusion port is communicated with the extrusion port, and the raw materials flowing through different flow channels are extruded through the corresponding extrusion ports and then converged at the co-extrusion port and extruded, and the product through the secondary extrusion achieves an improvement in its foaming degree and density, thereby meeting the higher requirements of customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is the overall structural view of the present invention;

[0020] Figure 2 It is an overall structural view of another direction of the present invention;

[0021] Figure 3 It is a cross-sectional structural view of the present invention;

[0022] Figure 4 It is the internal structure view of the present invention;

[0023] Figure 5 It is a structural view of the separator and the position adjustment mechanism;

[0024] Figure 6 It is an exploded structural view of the separator and the position adjustment mechanism.

[0025] Figure 7 is a structural view of the separator.

[0026] Figure 8 yes Figure 4 A magnified structural view of . DETAILED DESCRIPTION

[0027] The advantages and features of the present disclosure and its implementation methods will be explained by the following embodiments described with reference to the accompanying drawings. However, the present disclosure can be embodied in different forms and should not be interpreted as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure will be comprehensive and complete, and will fully convey the scope of the present disclosure to those skilled in the art. In addition, the present disclosure is limited only by the scope of the claims.

[0028] The shapes, sizes, ratios, angles and numbers disclosed in the drawings for describing the embodiments of the present disclosure are only examples, and therefore the present disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, when the detailed description of the relevant known functions or configurations is determined to be unnecessary to blur the focus of the present disclosure, the detailed description will be omitted. In the case of using "including", "having" and "comprising" described in this specification, other parts may be added unless "only" is used. Unless otherwise indicated, the terms in the singular may include plural forms.

[0029] When explaining an element, although not explicitly described, the element is understood to include a range of error.

[0030] When describing a positional relationship, for example, when the positional relationship is described as "on," "above," "below," and "adjacent to," unless "immediately" or "directly" is used, one or more parts may be arranged between two other parts.

[0031] When describing a time relationship, for example, when a time sequence is described as “after,” “subsequently,” “next,” and “before,” discontinuous cases may be included unless “just” or “directly” is used.

[0032] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present disclosure.

[0033] As those skilled in the art can fully understand, the features of the different embodiments of the present disclosure can be coupled or combined with each other in part or in whole, and can cooperate with each other in various ways and be driven technically. The embodiments of the present disclosure can be performed independently of each other, or can be performed together in a mutually dependent relationship.

[0034] Reference Figures 1 to 8 The present invention discloses a multi-layer foam adjustable co-extrusion die, comprising a die cavity 2 arranged in a die head 1 and a co-extrusion port 3 communicating with the die cavity 2, wherein the die cavity 2 is provided with a plurality of partitions 4, wherein the partitions 4 divide the die cavity 2 into a plurality of flow channels 5, and each of the flow channels 5 has an extrusion port 6, and the co-extrusion port 3 is communicated with the extrusion port 6. In the above, the die cavity 2 is communicated with the pressurized flow channel 5, so that the raw material pressurized by the pressurized flow channel 100 will enter the die cavity 2, flow into the corresponding flow channel 5, and after being extruded through the extrusion port 6, it will be extruded after converging at the co-extrusion port 3, thereby realizing secondary extrusion and improving the foaming degree and density. The extrusion ports 6 are arranged around the co-extrusion port 3, so that the raw material extruded from the extrusion port 6 can directly enter the co-extrusion port 3. As a preferred structure, the flow channel 5 is a tapered structure, which gradually narrows from the inlet of the flow channel 5 to the extrusion port 6, so that the pressure of the raw material will gradually increase, thereby ensuring the smooth flow of the raw material and gradually meeting the pressure requirements. As a further structure, the inlet of the flow channel 5 is designed to be a bell mouth, with a wide inlet and a narrow outlet, which can better guide the raw materials into the flow channel 5. Therefore, the shape of the separator 4 is narrow at both ends and wide in the middle, and this can reduce the resistance of the separator 4 to the raw material.

[0035] As shown in the figure, it also includes a position adjustment mechanism for adjusting the front and rear positions of the separator 4 in the mold cavity 2, and the width and position of the extrusion port 6 are finely adjusted through the position of the separator 4, so as to adapt to the extrusion requirements of products of different specifications. The position adjustment mechanism includes an adjustment connecting plate 7, an adjustment hole relatively arranged on the die head 1, and an adjustment shaft 8 rotatably matched with the adjustment hole. An eccentric portion 9 is provided at the end of the adjustment shaft 8, a connecting hole 10 is provided on the adjustment connecting plate 7, and a connecting rod 11 passing through the die head 1 is provided on the separator 4. The adjustment connecting plate 7 is connected to the connecting rod 11 and the eccentric portion 9 is rotatably connected to the connecting hole 10. The adjustment shaft 8. The adjusting connecting plate 7 can be locked to the die head 1 by fasteners. Of course, the die head 1 is provided with a long hole for the connecting rod 11 to pass through and move. When adjusting, first loosen the fastener a little, and then rotate the adjusting shaft 8, so that the eccentric part 9 drives the adjusting connecting plate 7 to move. The adjusting connecting plate 7 will pull the connecting rod 11, thereby realizing a slight adjustment of the position of the partition 4, which is roughly a movement of several millimeters. After the adjustment is completed, the fastener is locked. The above structure has good reliability and long service life, is adaptable to high temperature and high pressure environments, and does not take up a large space. Except for the adjusting shaft 8 in the mold cavity 2, the remaining components are outside the mold cavity 2, so the space occupied by the mold cavity 2 is also small. Because both ends of the adjusting shaft 8 of the present application are provided with adjusting connecting plates 7, the partition 4 can be pulled on both sides during adjustment, so the pulling force is relatively even, and the installation structure of the other end of the adjusting shaft 8 is the same as the principle of this end, except that the structure of the fastener is different, one end is a round nut 12, and the other end is an end plate 13 fixed to the shaft end. As a further structure, the partition 4 is provided with an embedding groove, and the embedding groove is provided with a gasket 16 that contacts the inner wall of the mold cavity 2. The embedding groove is arranged around the positioning groove, and the gasket 16 can prevent the partition 4 from directly contacting the inner wall of the mold cavity 2. When the partition 4 moves, not only is the friction small, but also the friction between metals can be avoided to cause greater wear.

[0036] As shown in the figure, the end of the adjusting shaft 8 is provided with a shaft head 14, and the end of the shaft head 14 is square, which is convenient for tool clamping. The die head 1 is provided with a countersunk hole concentric with the adjusting hole, and the countersunk hole is provided with a shaft end piece 15. The end of the adjusting shaft 8 can be against the shaft end piece 15. The eccentric part 9 is an eccentric sleeve sleeved on the shaft head 14, and the eccentric sleeve is rotatably connected with the connecting hole 10. The eccentric sleeve is connected to the shaft head 14 through a flat key structure. The shaft end piece 15 is provided with an end piece hole. The shaft head 14 passes through the end piece hole and is connected to the fastener, and the adjusting shaft 8, the shaft end piece 15, and the eccentric sleeve are fixed to the die head 1 through the fastener. The above structure facilitates the processing and assembly of the adjusting shaft 8. As a preferred structure, the adjusting connecting plate 7 is provided with a connecting hole 2 17, and the connecting rod 11 is located in the connecting hole 2 17, which is simple to install. As a preferred structure, the eccentric sleeve is provided with a pointer disk 24 which rotates together with the eccentric sleeve, and the die surface is correspondingly provided with a scale, and the movement adjustment amount of the separator 4 can be known through the pointer disk 24 and the scale structure.

[0037] The fastener further comprises a pressing ring 18 , through which the adjusting connecting plate 7 is locked on the shaft head 14 , and the adjusting connecting plate 7 is prevented from moving radially along the adjusting shaft 8 by the pressing ring 18 .

[0038] As shown in the figure, the mold cavity 2 and the co-extrusion port 3 are surrounded by two oppositely arranged side panels 19 and a module 20, and also include a co-extrusion adjustment plate 21 and an adjusting screw 22 capable of adjusting the size of the co-extrusion port 3. The module 20 is provided with a slot with a circular arc cross-section and a through hole that passes through the mold cavity 2. The co-extrusion adjustment plate 21 is provided with a rotating column 23 and an adjusting screw hole (not shown in the figure) that are rotatably matched with the slot. The rod of the adjusting screw 22 is threadedly connected to the adjusting screw hole through the through hole. By swinging the co-extrusion adjustment plate 21, we can adjust the size of the co-extrusion port 3 to meet the extrusion requirements of products of different specifications, and the adjustment structure is simple. There is also a gasket 16 on the co-extrusion adjustment plate 21, and the principle will not be repeated.

[0039] As shown in the figure, the partition 4 is provided with an oil hole 25, the connecting rod 11 is provided with an inner hole 26 communicated with the oil hole 25, and the oil pipe joint 27 is connected to the oil hole 25 through the inner hole 26. Because in the present application, the connecting rod 11 is relatively arranged on the partition 4, the oil pipe joint 27 on one connecting rod 11 is the oil inlet end, and the oil pipe joint 27 on the other connecting rod 11 is the oil outlet end. Through the above structure, the partition 4 can be oil-cooled to ensure the service life of the product, and at the same time, it realizes a convenient connection with the adjusting connecting plate 7, simplifies the structure and saves space.

[0040] Specifically, a positioning groove 28 is provided on the partition 4, a positioning block 29 is provided at the end of the connecting rod 11, and the end of the rotating shaft and the positioning block 29 can be embedded in the positioning groove 28, and the oil hole 25 is connected to the positioning groove 28. The above structure is convenient for installing and fixing the connecting rod 11.

[0041] The above is a detailed introduction to a multi-layer foam adjustable co-extrusion mold provided by an embodiment of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for general technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. Multi-layer foam adjustable co-extrusion die, characterized by: It includes a mold cavity arranged in the die head and a co-extrusion port connected to the mold cavity. A plurality of partitions are arranged in the mold cavity. The partitions divide the mold cavity into a plurality of flow channels, and each of the flow channels has an extrusion port. The co-extrusion port is connected to the extrusion port, and the raw materials flowing through different flow channels are extruded through the corresponding extrusion ports and then converged at the co-extrusion port and extruded.

2. The multi-layer foam adjustable co-extrusion die according to claim 1, characterized in that: It also includes a position adjustment mechanism for adjusting the front and rear positions of the partition in the mold cavity, the position adjustment mechanism includes an adjustment connecting plate, an adjustment hole relatively arranged on the die head, and an adjustment shaft rotatably matched with the adjustment hole, an eccentric portion is provided at the end of the adjustment shaft, a connecting hole one is provided on the adjustment connecting plate, a connecting rod passing through the die head is provided on the partition, the adjustment connecting plate is connected to the connecting rod and the eccentric portion is rotatably connected to the connecting hole one, and the adjustment shaft and the adjustment connecting plate can be locked to the die head by fasteners.

3. The adjustable co-extrusion die for multi-layer foam according to claim 2, characterized in that: The end of the adjusting shaft is provided with a shaft head, the die head is provided with a countersunk hole concentric with the adjusting hole, the countersunk hole is provided with a shaft end piece, the end of the adjusting shaft can be abutted against the shaft end piece, the eccentric part is an eccentric sleeve sleeved on the shaft head, the eccentric sleeve is rotatably connected with the connecting hole, the shaft end piece is provided with an end piece hole, the shaft head is connected to the fastener through the end piece hole, and the adjusting shaft, the shaft end piece and the eccentric sleeve are fixed to the die head by fasteners.

4. The multi-layer foam adjustable co-extrusion die according to claim 3, characterized in that: It also includes a pressing ring, and the fastener locks the adjusting connecting plate on the shaft head through the pressing ring.

5. The multi-layer foam adjustable co-extrusion die according to claim 1, characterized in that: The mold cavity and the co-extrusion port are surrounded by two oppositely arranged side panels and a module, and also include a co-extrusion adjustment plate and an adjustment screw capable of adjusting the size of the co-extrusion port. The module is provided with a slot with a circular arc cross-section and a through hole that passes through the mold cavity. The co-extrusion adjustment plate is provided with a rotating column and an adjustment screw hole that rotatably cooperates with the slot. The rod of the adjustment screw is threadedly connected to the adjustment screw hole through the through hole.

6. The multi-layer foam adjustable co-extrusion die according to claim 1, characterized in that: The flow channel is in a tapered structure, gradually narrowing from the inlet of the flow channel to the extrusion outlet.

7. The multi-layer foam adjustable co-extrusion die according to claim 2, characterized in that: The adjusting connecting plate is provided with a second connecting hole, and the connecting rod is located in the second connecting hole.

8. The multi-layer foam adjustable co-extrusion die according to claim 7, characterized in that: The separator is provided with an oil hole 1, the connecting rod is provided with an inner hole communicating with the oil hole 1, and the oil pipe joint is connected with the oil hole 1 through the inner hole.

9. The multi-layer foam adjustable co-extrusion die according to claim 8, characterized in that: The separator is provided with a positioning groove, the end of the connecting rod is provided with a positioning block, and the end of the rotating shaft and the positioning block can be embedded in the positioning groove, and the oil hole 1 is communicated with the positioning groove.

10. The multi-layer foam adjustable co-extrusion die according to claim 9, characterized in that: An embedding groove is provided on the separator, and a gasket in contact with the inner wall of the mold cavity is provided in the embedding groove.

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