Extrusion die and extruder

Abstract

The utility model relates to the technical field of dies, and discloses an extrusion die and an extruder, the extrusion die comprises a die head and an inner die set detachably arranged in the die head, the inner die set comprises a die sleeve arranged at the outlet, a needle frame arranged at the upper end of the die sleeve and capable of pressing the die sleeve, and a die needle capable of penetrating through and being fixed to the needle frame. According to the technical scheme, the die needle of the extrusion die can penetrate through and be fixed on the needle frame, so that the die needle can be taken out and inserted in time when the die needle needs to be replaced; according to the extrusion die, the die sleeve of the extrusion die is detachably arranged in the die head, and the needle frame is pressed on the die sleeve, so that the die sleeve can be replaced only by taking out the needle frame firstly when the die sleeve needs to be replaced. Compared with an existing mode that all the components of the inner die set are connected through bolts and then installed into the die head through a special tool, the die needle and the die sleeve of the extrusion die can be disassembled and assembled only through hands, and the replacement efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to extrusion die technical field, concretely relates to an extrusion die and extruder. BACKGROUND

[0002] When extrusion molding and porous molding are carried out by using the extrusion die, the die sleeve and the die pin of the extrusion die are worn out quickly and need to be replaced frequently. In the current die, the die pin, the pin holder, the die sleeve and other components are connected by bolts to form a whole and are installed in the die head. During installation, the die head is hammered into or pressed into by a hydraulic device, such as a jack, to realize assembly, and the installation efficiency is low. During replacement, professional maintenance personnel need to use special tools to replace the die pin and the die sleeve, and the replacement process is time-consuming and laborious, and the assembly precision of the die pin and the die sleeve with the die head after replacement is often not high. This will cause the die pin to break or be inclined during production, the size of the produced catalyst carrier exceeds the technical requirements, the particles are uneven, and the product quality is affected. SUMMARY

[0003] One of the technical problems to be solved by the utility model is that the die pin and the die sleeve of the current extrusion die have low replacement efficiency.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an extrusion die on one aspect, which comprises a die head and an inner die group detachably arranged in the die head, wherein the die head has an outlet and an inlet, the inner die group comprises a die sleeve arranged at the outlet, a pin holder arranged at the upper end of the die sleeve and capable of pressing the die sleeve, and a die pin capable of penetrating and fixed to the pin holder.

[0005] In some embodiments, the die head comprises an outlet part and a main part in communication with the outlet part, the die sleeve comprises a first ring body and a second ring body in communication with the first ring body, the outlet part is sleeved outside the first ring body, and the main part is sleeved outside the second ring body.

[0006] In some embodiments, the die pin comprises a needle stem and a needle head arranged at the first end of the needle stem, and the pin holder is provided with a mounting hole to accommodate the needle stem to penetrate.

[0007] In some embodiments, the outer diameter of the needle head is greater than the inner diameter of the mounting hole, the needle head abuts against the upper end of the pin holder, and the second end of the die pin extends to the outlet.

[0008] In some embodiments, the upper end of the pin holder is provided with a through hole to allow the material to pass through the pin holder, and the through hole is arranged away from the mounting hole.

[0009] In some embodiments, the inside of the die sleeve is hollow, and the lower end of the pin holder extends into the die sleeve.

[0010] In some embodiments, the inner die assembly is coaxially arranged with the die head.

[0011] In some embodiments, the number of the die pins is one or more.

[0012] The utility model discloses a second aspect provides a kind of extruder, including any one described in preceding extrusion die.

[0013] In some embodiments, the extrusion die is clamped or screwed to the discharge end of the extruder.

[0014] Through the above technical solution, the die pin of the extrusion die is arranged to be able to pass through and be fixed on the needle holder, so as to be taken out and inserted in time when the die pin needs to be replaced; the die sleeve of the extrusion die is detachably arranged in the die head, and the needle holder is pressed on the die sleeve, so that the die sleeve can be replaced by first taking out the needle holder when the die sleeve needs to be replaced. Compared with the current method of connecting the components of the inner die assembly by bolts and then installing them into the die head with special tools, the die pin and the die sleeve of the extrusion die of the present application can be disassembled and assembled by hand, and the replacement efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0016] Figure 1 is a sectional view of one embodiment of the extrusion die disclosed by the utility model;

[0017] Figure 2 is a sectional view of another embodiment of the extrusion die disclosed by the utility model.

[0018] EXPLANATION OF REFERENCE NUMERALS

[0019] 1, die head; 11, outlet portion; 12, main body portion; 13, outlet; 14, inlet; 2, die sleeve; 21, first ring body; 22, second ring body; 3, needle holder; 31, through hole; 32, mounting column; 33, mounting hole; 4, die pin; 41, needle rod; 42, needle head. DETAILED DESCRIPTION

[0020] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The detailed description of the following examples and drawings are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application, and the present application can be realized in many different forms, not limited to the specific examples disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0021] The present application provides these embodiments in order to make the present application thorough and complete, and fully express the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specified, the relative arrangement of components and steps, the composition of materials, numerical expressions and values set forth in these examples should be interpreted as merely exemplary, and not as limiting.

[0022] It should be noted that, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is greater than or equal to two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] In addition, the "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0024] It should also be noted that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. When it is described that a specific device is located between a first device and a second device, there can be an intermediate device between the specific device and the first device or the second device, or there can be no intermediate device.

[0025] All terms used in the present application have the same meaning as understood by those of ordinary skill in the art to which the present application pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary should be interpreted to have meanings consistent with their meanings in the context of the relevant art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0026] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered as part of the specification.

[0027] In order to solve the problem of low replacement efficiency of the die pin and die sleeve of the existing extrusion die, the utility model provides an extrusion die which comprises a die head 1 and an inner die assembly detachably arranged in the die head 1, wherein the die head 1 has an outlet 13 and an inlet 14, the inner die assembly comprises a die sleeve 2 arranged at the outlet 13, a needle holder 3 arranged at the upper end of the die sleeve 2 and capable of pressing the die sleeve 2, and a die pin 4 capable of penetrating through and being fixed to the needle holder 3.

[0028] As shown in Figure 1 and 2 , the die head 1 can be a cylinder with both ends open, and the inside is hollow to install the inner die assembly and enable the material to be transported from the inlet 14 to the outlet 13 and finally extruded; the die sleeve 2 is detachably arranged at the outlet 13 and used to limit the size and shape of the material extruded from the extrusion die, and the outer side wall thereof can be arranged in close contact with the inner side wall of the die head 1 to improve the stability during fixing; the needle holder 3 is detachably arranged inside the die head 1 and used to install and fix the die pin 4, the lower end of the needle holder 3 is in close contact with the upper end of the die sleeve 2 and can press the die sleeve 2 tightly between the outlet 13 and the lower end of the needle holder 3 to limit the die sleeve 2 in the vertical direction, and the outer side wall thereof can be arranged in close contact with the inner side wall of the die head 1 to improve the stability during fixing; the die pin 4 is detachably arranged in the needle holder 3 and used to process the holes of the catalyst carrier, and the cross-sectional shape thereof can be circular, oval, polygonal, etc. according to the shape of the holes of the catalyst carrier actually produced. The die head 1 and the components of the inner die assembly can be made of alloy, plastic, ceramic, etc. as needed.

[0029] It should be noted that in the extrusion die provided by the utility model, in order to facilitate manual disassembly and assembly of the operator as much as possible, the die sleeve 2, the die head 1, the needle holder 3 and the die head 1, and the die pin 4 and the needle holder 3 can all be arranged in plane combination. In some other embodiments, the die sleeve 2, the die head 1, the needle holder 3 and the die head 1, and the die pin 4 and the needle holder 3 can also be connected in a clamping manner. In addition, the die sleeve 2 and the needle holder 3 can be arranged in close contact with each other or connected in a clamping manner.

[0030] According to the technical scheme, the needle 4 of the extrusion die is arranged to be capable of penetrating through and being fixed on the needle holder, so that the needle 4 can be timely taken out and inserted when the needle 4 needs to be replaced; the die sleeve 2 of the extrusion die is detachably arranged in the die head 1, and the needle holder 3 is tightly pressed on the die sleeve 2, so that the die sleeve 2 can be replaced by first taking out the needle holder 3 when the die sleeve 2 needs to be replaced. Compared with the current mode in which the components of the inner die assembly are connected through bolts and then installed into the die head by using special tools, the needle 4 and the die sleeve 2 of the extrusion die can be disassembled and assembled by hand, and the replacement efficiency is greatly improved.

[0031] In some embodiments, the die head 1 comprises an outlet portion 11 and a main body portion 12 in communication with the outlet portion 11, and the die sleeve 2 comprises a first ring body 21 and a second ring body 22 in communication with the first ring body 21, the outlet portion 11 is sleeved outside the first ring body 21, and the main body portion 12 is sleeved outside the second ring body 22.

[0032] As shown in Figure 1 and 2 , the main body portion 12 can be used for transporting materials, and the outlet portion 11 can be used for outputting the shaped catalyst carrier. The inner cross sections of the outlet portion 11 and the main body portion 12 can be circular, square, etc., and the inner cross section size of the outlet portion 11 is preferably smaller than that of the main body portion 12. The main body portion 12 and the outlet portion 11 can be integrally arranged so that the outlet of the main body portion 12 is in communication with the inlet of the outlet portion 11.

[0033] The first ring body 21 of the die sleeve 2 is arranged in the outlet portion 11 and is used for defining the size and shape of the material extruded from the extrusion die, and the second ring body 22 is arranged in the main body portion 12 so as to be in close contact with the inner side wall of the main body portion 12 and the lower end of the needle holder 3, thereby making the fixing of the die sleeve 2 in the die head 1 more stable. The inner cross section shape of the first ring body 21 can be circular, oval, polygonal, etc. according to the shape of the catalyst carrier actually produced, and the inner cross section shape of the second ring body 22 can be circular, square, etc. The first ring body 21 and the second ring body 22 can be integrally arranged so that the outlet of the second ring body 22 is in communication with the inlet of the first ring body 21.

[0034] In some embodiments, the needle 4 comprises a needle rod 41 and a needle head 42 arranged at the first end of the needle rod 41, and the needle holder 3 is provided with a mounting hole 33 for accommodating the needle rod 41 to penetrate through.

[0035] As shown in Figure 1 and 2 , the mounting hole 33 is a through hole, and the shape and size of the mounting hole 33 are the same as those of the needle rod 41 of the needle 4, and when assembled, the needle rod 41 can penetrate through the mounting hole 33 from the upper end to the lower end of the needle holder 3; the needle head 42 can be located at the upper end of the needle holder 3, and the outer diameter of the needle head 42 is arranged to be greater than the inner diameter of the mounting hole 33, which can avoid the situation that the needle 4 is separated from the needle holder 3, and the fixing of the needle 4 in the needle holder 3 is more stable.

[0036] In some embodiments, the outer diameter of the needle head 42 is greater than the inner diameter of the mounting hole 33, the needle head 42 abuts against the upper end of the needle holder 3, and the second end of the die pin 4 extends to the outlet 13.

[0037] As shown in Figure 1 and 2 , during installation, the die pin 4 can extend in the direction from the inlet 14 to the outlet 13 of the die head 1. Specifically, the needle stem 41 passes through the mounting hole 33 until the lower surface of the needle head 42 abuts against the upper end surface of the needle holder 3 to achieve the positioning of the die pin 4, at this time, the second end of the die pin 4 is flush with the outlet 13 to ensure the integrity of the holes of the extruded catalyst carrier.

[0038] In some embodiments, the needle holder 3 comprises a needle holder body and a mounting column 32 arranged in the needle holder body, and the die pin 4 can pass through the mounting column 32.

[0039] As shown in Figure 2 , the part of the needle holder 3 for fixing the die pin 4 can be separately provided as the mounting column 32. Specifically, the mounting column 32 can be a section of column body that is detachably arranged in the needle holder body, or can be integrally formed with the needle holder body, and the mounting holes 33 can be all arranged on the mounting column 32, and the thickness of the mounting column 32 can be greater than the thickness of the needle holder body. In this way, on the one hand, the die pin 4 can be better positioned, and on the other hand, the mounting column 32 can be partially embedded in the die sleeve 2 to strengthen the cooperation between the needle holder 3 and the die sleeve 2.

[0040] In some embodiments, the upper end of the needle holder 3 is provided with a through hole 31 for the material to pass through the needle holder 3, and the through hole 31 is arranged away from the mounting hole 33.

[0041] As shown in Figure 1 and 2 , since the material needs to be transported from the inlet 14 to the outlet 13, a through hole 31 needs to be provided in the needle holder 3 for material transportation. The through hole 31 can be provided in plurality, and the plurality of through holes 31 need to be arranged away from the passing position of the die pin 4 on the needle holder 3.

[0042] In some embodiments, the number of die pins 4 is one or more. As shown in Figure 1 and 2 , the number of die pins 4 is arranged according to the number of holes of the catalyst carrier, and in actual production, it can be 1 to 60. When the number of die pins 4 is multiple, the needle holder 3 can be preferably arranged in the form of comprising a needle holder body and a mounting column 32, and the plurality of die pins 4 are fixed in the mounting column 32 to improve the stability.

[0043] In some embodiments, the inside of the die sleeve 2 is hollow, and the lower end of the needle holder 3 extends into the die sleeve 2.

[0044] As shown in Figure 1 and 2 The sleeve 2 has a material conveying channel, which includes a first tapered section and a second section with constant inner diameter in sequence in the direction from the inlet 14 to the outlet 13. The first section of the material conveying channel is tapered in the direction from the inlet 14 to the outlet 13, so that the conveying capacity of the material conveying channel continuously decreases in the first section, avoiding blockage of the conveying channel, and the second section is set to have constant inner diameter to produce a catalyst carrier with required specifications. Preferably, the first section of the material conveying channel can be arranged in the second ring body 22, and the second section can be arranged in the first ring body 21.

[0045] In some embodiments, the inner mold group is coaxially arranged with the die head 1. As shown in Figure 1 and 2 The inner mold group is coaxially arranged with the die head 1, which can improve the structural stability of the entire extrusion die, and the sleeve 2, the needle holder 3 and the needle 4 of the inner mold group are also preferably coaxially arranged. When the number of needles 4 is one, the needle 4 is located on the central axis of the die head 1; when the number of needles 4 is multiple, the multiple needles 4 can be arranged around the central axis of the die head 1.

[0046] The second aspect of the utility model provides an extruder comprising the foregoing extrusion die. The extruder is an extrusion molding device for fixing the specific shape of various plastic materials after extrusion.

[0047] In some embodiments, the extrusion die is clamped or screwed to the discharge end of the extruder. Specifically, a clamping groove or a joint can be arranged at the inlet 14 to be clamped to the discharge end of the extruder, or a threaded hole can be arranged to be screwed to the discharge end of the extruder.

[0048] In some embodiments, the extruder comprises one or more extrusion dies. The extruder can select one or more extrusion dies according to the processing capacity of the device itself. When multiple extrusion dies are arranged, each extrusion die can be connected in parallel to the discharge end of the extruder.

[0049] So far, the embodiments of the utility model have been described in detail. In order to avoid obscuring the concept of the utility model, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0050] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood that such examples are for illustration only and are not intended to limit the scope of the present application. It should be understood that modifications can be made to the above embodiments, or equivalent substitutions can be made to some technical features, without departing from the scope and spirit of the present application. In particular, the technical features mentioned in each of the embodiments can be combined in any manner, as long as there is no structural conflict.

Claims

1. An extrusion die characterized by, The extrusion die comprises a die head (1) and an inner die set detachably arranged in the die head (1), wherein the die head (1) has an outlet (13) and an inlet (14), the inner die set comprises a die sleeve (2) arranged at the outlet (13), a needle holder (3) arranged at the upper end of the die sleeve (2) and capable of pressing the die sleeve (2), and a die needle (4) capable of penetrating through and fixed to the needle holder (3).

2. The extrusion die of claim 1, wherein, The die head (1) comprises an outlet part (11) and a main body part (12) in communication with the outlet part (11), the die sleeve (2) comprises a first ring body (21) and a second ring body (22) in communication with the first ring body (21), the outlet part (11) is sleeved outside the first ring body (21), and the main body part (12) is sleeved outside the second ring body (22).

3. The extrusion die of claim 1, wherein, The die needle (4) comprises a needle stem (41) and a needle head (42) arranged at the first end of the needle stem (41), and the needle holder (3) is provided with a mounting hole (33) to accommodate the needle stem (41) to penetrate through.

4. The extrusion die of claim 3, wherein, The outer diameter of the needle head (42) is greater than the inner diameter of the mounting hole (33), the needle head (42) abuts against the upper end of the needle holder (3), and the second end of the die needle (4) extends to the outlet (13).

5. The extrusion die of claim 3, wherein, The upper end of the needle holder (3) is provided with a through hole (31) so that the material passes through the needle holder (3), and the through hole (31) is arranged away from the mounting hole (33).

6. The extrusion die of claim 1, wherein, The inside of the die sleeve (2) is hollow, and the lower end of the needle holder (3) extends into the die sleeve (2).

7. The extrusion die of claim 1, wherein, The inner die set is coaxially arranged with the die head (1).

8. The extrusion die of claim 1, wherein, The number of the die needle (4) is one or more.

9. An extruder characterized by, The extrusion die comprises the extrusion die according to any one of claims 1-8.

10. The extruder of claim 9, wherein, The extrusion die is clamped or screwed to the discharge end of the extruder.

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