Extruder screw pillow block and screw

Abstract

The screw pillow block of the extruder specifically comprises a pillow block module, the pillow block module comprises a first pillow block body, the outer wall of the first pillow block body is a cylindrical surface, and a material passing hole group is formed in the middle of the inner side of the first pillow block body. According to the extruder screw rod pillow block, the extruder screw rod is supported in the machining process, the original contact between the extruder screw rod and the irregular special-shaped surface of the inner wall of the screw rod sleeve is changed into the contact between regular cylindrical surfaces, the abrasion between the extruder screw rod and the screw rod sleeve is greatly reduced, and the service life of the extruder screw rod is prolonged. The service life of the extruder screw can be effectively prolonged, and the cost is reduced; through cooperation of the second pillow block body, the mounting block and the first pillow block body, the first pillow block body can be conveniently mounted or dismounted, when the first pillow block body is seriously abraded, the first pillow block body can be conveniently replaced, and therefore cost is reduced, and adaptability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of extruder barrel screws, in particular to a screw pillow block and a screw for an extruder. Background Art

[0002] Extruder is a type of plastic machinery. Its working principle is to rely on the pressure and shear force produced by the rotation of the screw to fully plasticize and evenly mix the materials, and finally form the products through the die. Therefore, the barrel and the screw inside the barrel are the core components of the extruder. The structure and performance of the screw determine the productivity, plasticization quality, dispersion of the filler, melt temperature, power consumption, etc. of an extruder.

[0003] The structure and installation method of the traditional barrel screw are mostly to install the screw sleeve inside the barrel and then set the screw inside the screw sleeve. Since the support of the traditional extruder screw is usually at the end away from the output end of the barrel, that is, most of the screw is supported at the end away from the injection port. During operation, the screw near the output end of the barrel may contact the screw sleeve. Since the contact surface is the contact between the irregular profile surface of the screw ridge and the regular inner wall surface of the screw sleeve, long-term friction will cause serious wear between the two. When the wear reaches a certain degree, both need to be replaced, resulting in increased cost of use.

[0004] Based on this, an extruder screw pillow block and a screw are proposed, which provide a new solution to solve the above technical problems. Utility Model Content

[0005] Based on this, it is necessary to provide an extruder screw pillow block and screw to address the technical problem raised in the above background technology that the extruder screw and the inner wall of the screw sleeve wear each other after long-term use, resulting in increased use costs.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The extruder screw pillow block specifically includes a pillow block module, and the pillow block module includes a pillow block body 1, the outer wall of the pillow block body 1 is a cylindrical surface, and a feeding hole group is arranged in the middle of the inner side of the pillow block body 1.

[0008] Preferably, the feed hole group includes a supporting connection hole opened on an inner side of the pillow block body, and a plurality of feed notches are opened on an inner side of the pillow block body and located on the periphery of the supporting connection hole.

[0009] Preferably, the feed hole group is arranged as a group, and the central axis of the supporting connection hole is collinear with the central axis of the cylindrical surface.

[0010] Preferably, the feed hole groups are provided in two groups, and the two groups of feed hole groups are symmetrically opened on the inner side of the pillow block body.

[0011] Preferably, the feeding notches of two feeding hole groups close to each other overlap with each other.

[0012] Preferably, the pillow block module also includes a pillow block body 2, a mounting cavity matching the pillow block body 1 is symmetrically opened on the inner side of the pillow block body 2, a mounting groove is opened on the inner side of the pillow block body 2 and located at the top and bottom of the mounting cavity, a mounting threaded hole is opened on the outer periphery of the pillow block body 1 and located between adjacent material passing notches, a mounting block is provided at the top and bottom of the pillow block body 1, a second mounting screw matching the mounting threaded hole is provided on the inner sides of both ends of the mounting block, the mounting block is connected to the pillow block body 1 through the second mounting screw, a positioning threaded hole is opened on the pillow block body 2 and located at the top or bottom of the mounting block, a positioning screw is provided on the inner side of the positioning threaded hole, the positioning screw is threadedly connected to the mounting block, and the pillow block body 2 is connected to the mounting block through the positioning screw.

[0013] Preferably, the inner side of the pillow block body 1 is rotatably connected to a connecting inner gear ring, and the inner side of the connecting inner gear ring is provided with a plurality of engaging teeth.

[0014] A screw comprises a screw module, wherein the screw module comprises a screw body and a support connector connected to the end of the screw body, the support connector is adapted to the support connection hole, and the support connector is integrally formed with the screw body or detachably connected.

[0015] Preferably, the supporting connector is provided with a plug-in column near one end of the screw body, a plurality of connecting strips are provided on the outer periphery of the plug-in column, a plug-in groove matched with the plug-in column is opened on the inner side of the end of the screw body, a plurality of limiting grooves matched with the connecting strip are opened on the inner side of the screw body along the circumference of the plug-in groove, and a plurality of first mounting screws are provided on the inner side of the end of the screw body for threaded connection with the plug-in column.

[0016] Preferably, the screw module also includes a connecting rod, which is adapted to the connecting inner gear ring, and a plurality of connecting teeth are provided on the outer side of the connecting rod. The screw body includes a plurality of feeding sections sleeved on the connecting rod, and a tooth groove matching the connecting teeth is provided on the inner side of the feeding section.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The utility model supports the extruder screw during the processing by setting the extruder screw pillow block, and changes the contact between the original irregular profiled surface of the extruder screw and the inner wall of the screw sleeve into the contact between regular cylindrical surfaces, which greatly reduces the wear between the extruder screw and the screw sleeve, can effectively improve the service life of the extruder screw, and reduce the cost.

[0019] 2. The utility model sets different numbers of feeding holes on the inner side of the pillow block body 1 to meet the needs of single-screw extrusion or twin-screw extrusion. At the same time, through the coordinated design of the pillow block body 1 and the pillow block body 2, the pillow block body 1 with only one group of feeding holes inside can also meet the needs of twin-screw extrusion, which greatly improves the adaptability, makes the pillow block body 1 more versatile, and is conducive to industry popularization.

[0020] 3. The utility model facilitates the installation or disassembly of the pillow block body 1 through the cooperation of the pillow block body 2, the mounting block and the pillow block body 1. When the pillow block body 1 is severely worn, it can be easily replaced, thereby reducing costs and improving adaptability.

[0021] 4. The utility model connects the inner gear ring with the connecting rod and the pillow block body 1, so that the pillow block body 1 can be installed at the end of the extruder screw or in the middle of the extruder screw, thereby supporting the screw from multiple points, effectively preventing the deformation of a longer screw due to long-term use, and improving adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a structural diagram of the pillow body, support connection holes, and material passing slots of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the screw body and the support connector of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the plug-in column and the plug-in slot of the utility model;

[0027] Figure 5 It is a structural schematic diagram of a pillow body 1 with two groups of material passing holes provided inside the utility model;

[0028] Figure 6 It is a structural schematic diagram of a pillow block body with overlapping material passing hole groups according to the utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the pillow block body and the mounting block of the utility model;

[0030] Figure 8 This is a structural schematic diagram of the utility model in which the pillow block body 1 is installed inside the pillow block body 2;

[0031] Fig. 9 This is a structural schematic diagram of a pillow block body of the utility model installed in the middle of the outer side of the connecting rod.

[0032] The markings in the figure are as follows:

[0033] 100. Screw module; 101. Screw body; 102. Support connector; 103. Plug-in column; 104. Plug-in slot; 105. First mounting screw; 106. Connecting strip; 107. Limiting slot; 108. Connecting rod; 200. Pillow block module; 201. Pillow block body one; 202. Support connecting hole; 203. Feeding slot; 204. Pillow block body two; 205. Mounting block; 206. Mounting threaded hole; 207. Second mounting screw; 208. Mounting cavity; 209. Mounting slot; 210. Positioning screw; 211. Positioning threaded hole; 212. Connecting inner gear ring. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0035] Embodiment 1

[0036] Please refer to Figure 1-9 A screw pillow block for an extruder includes a pillow block module 200, the pillow block module 200 includes a pillow block body 201, the outer wall of the pillow block body 201 is a cylindrical surface, and a feed hole group is opened in the middle of the inner side of the pillow block body 201. In this embodiment, the feed hole group is one group or two groups, which correspond to single-screw extrusion work and twin-screw extrusion work respectively.

[0037] Please refer to Figure 2The feed hole group includes a support connection hole 202 opened on the inner side of the pillow block body 201, and a plurality of feed slots 203 are opened on the inner side of the pillow block body 201 and located on the outer periphery of the support connection hole 202. Specifically, the pillow block body 201 is used in conjunction with the extruder screw through the support connection hole 202. In this embodiment, the support connection hole 202 is sleeved on the outer side of the support connection head 102 to support the screw body 101, and at the same time, the friction between the irregular profiled surface on the outer wall of the screw body 101 and the screw sleeve is converted into the friction between the support connection head 102 and the pillow block body 201, thereby reducing the wear on the screw body 101 and the screw sleeve. The setting of the feed slot 203 facilitates the passage of raw materials inside the extruder when the screw rotates.

[0038] Please refer to Figure 3 The feed hole group is set as a group, and the central axis of the support connecting hole 202 is collinear with the central axis of the cylindrical surface, so that when the support connecting head 102 is inserted into the inner side of the support connecting hole 202 and cooperates therewith, the support connecting head 102 is collinear with the central axis of the pillow block body 201.

[0039] Embodiment 2

[0040] This embodiment further optimizes the first embodiment. For details, please refer to Figure 5 The feed hole groups are set to two groups, and the two groups of feed holes are symmetrically opened on the inner side of the pillow block body 201. When there are two groups of feed hole groups on the inner side of the pillow block body 201, it can be used in conjunction with two screw bodies 101, that is, to meet the requirements of twin-screw extrusion.

[0041] Embodiment 3

[0042] This embodiment further optimizes the second embodiment. For details, please refer to Figure 6 The feeding slots 203 of the two feeding hole groups that are close to each other overlap with each other, so that the distance between the two supporting connecting holes 202 is reduced. Compared with the two groups of feeding hole groups being arranged separately, this arrangement makes the outer diameter of the pillow block body 201 smaller, which can adapt to the barrel with a smaller inner diameter, thereby reducing costs and increasing adaptability; or under the condition of the same outer diameter of the pillow block body 201, the feeding slot 203 can be made larger, which is more conducive to the passage of raw materials.

[0043] Embodiment 4

[0044] This embodiment further optimizes the first, second and third embodiments. Figure 7-8The pillow block module 200 also includes a pillow block body 204, and a mounting cavity 208 matching the pillow block body 1 201 is symmetrically opened on the inner side of the pillow block body 204, and mounting grooves 209 are opened on the inner side of the pillow block body 204 and located at the top and bottom of the mounting cavity 208, and mounting threaded holes 206 are opened on the outer periphery of the pillow block body 1 201 and located between adjacent material passing slots 203, and mounting blocks 205 are provided on the top and bottom of the pillow block body 1 201, and both ends of the mounting blocks 205 are A second mounting screw 207 matching the mounting threaded hole 206 is provided on the inner side of the pillow block 204, and the mounting block 205 is connected to the pillow block body 1 201 through the second mounting screw 207. A positioning threaded hole 211 is provided on the pillow block body 204 and located at the top or bottom of the mounting block 205. A positioning screw 210 is provided on the inner side of the positioning threaded hole 211. The positioning screw 210 is threadedly connected to the mounting block 205, and the pillow block body 204 is connected to the mounting block 205 through the positioning screw 210.

[0045] Specifically, the pillow block body 1 201 cooperates with the mounting cavity 208, the mounting block 205 cooperates with the mounting groove 209, and the mounting block 205 is fixed to the inner side of the pillow block body 2 204 by the positioning screw 210, and the mounting block 205 is fixed to the upper and lower sides of the pillow block body 1 201 by the second mounting screw 207, so that the pillow block body 1 201 is detachably mounted on the inner side of the pillow block body 2 204, so that the pillow block body 1 201 can be directly used when single-screw extrusion is performed, and when twin-screw extrusion is required, two pillow block bodies 1 201 can be installed on the inner side of the pillow block body 2 204 for use, thereby improving the versatility and adaptability of the pillow block body 1 201 and reducing the production cost;

[0046] It should be noted that the shape of the second pillow block body 204 is not limited to a cylindrical shape, and can be set according to the installation conditions of the barrel end during actual use. In this embodiment, the outer wall surface of the second pillow block body 204 is a cylindrical surface.

[0047] Embodiment 5

[0048] This embodiment further optimizes the first, second and third embodiments. Fig. 9 The inner side of the pillow block body 201 is rotatably connected with a connecting inner gear ring 212, and the inner side of the connecting inner gear ring 212 is provided with a plurality of engaging teeth. When the screw module 100 is composed of a connecting rod 108 and a feeding section on its outer side and a supporting connector 102, the pillow block body 201 can be connected to any position on the connecting rod 108 by the matching connection between the connecting inner gear ring 212 and the connecting rod 108, thereby supporting the connecting rod 108 in the middle.

[0049] A screw includes a screw module 100, wherein the screw module 100 includes a screw body 101 and a support connector 102 connected to the end of the screw body 101, the support connector 102 is adapted to a support connection hole 202, and the support connector 102 is integrally formed with the screw body 101 or detachably connected.

[0050] A plug-in column 103 is provided at one end of the support connector 102 close to the screw body 101, and a plurality of connecting strips 106 are provided on the outer periphery of the plug-in column 103. A plug-in groove 104 matched with the plug-in column 103 is provided on the inner side of the end of the screw body 101. A plurality of limiting grooves 107 matched with the connecting strip 106 are provided on the inner side of the screw body 101 along the circumference of the plug-in groove 104. A plurality of first mounting screws 105 threadedly connected to the plug-in column 103 are provided on the inner side of the end of the screw body 101. The support connector 102 is detachably mounted on one end of the screw body 101, so that the support connector 102 can be easily replaced when it is worn, thereby protecting the screw body 101 to the maximum extent.

[0051] The screw module 100 also includes a connecting rod 108, which is adapted to connect to the inner gear ring 212. The outer side of the connecting rod 108 is provided with a plurality of connecting teeth. The screw body 101 includes a plurality of feeding sections sleeved on the connecting rod 108. The inner side of the feeding section is provided with tooth grooves matching the connecting teeth.

[0052] The use process of the screw pillow block and the screw of the extruder provided by the utility model is as follows:

[0053] When single-screw extrusion is required, a pillow block body 201 with a set of feeding holes is selected to cooperate with the support connector 102; when twin-screw extrusion is required, a pillow block body 201 with two sets of feeding holes is selected to cooperate with the support connector 102, and the screw body 101 is supported by the pillow block body 201;

[0054] When the support connector 102 needs to be disassembled, the first mounting screw 105 is taken out from the plug-in column 103, and then the support connector 102 is pulled out from the screw body 101;

[0055] When the pillow block body 1 201 and the pillow block body 2 204 need to be used together, the mounting block 205 is installed on the pillow block body 1 201 by the second mounting screw 207, and the pillow block body 1 201 is installed to the inner side of the pillow block body 2 204, and then positioned and fixed by the positioning screw 210.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. An extruder screw pillow block, characterized in that: The pillow block module (200) comprises a pillow block body (201), the outer wall of the pillow block body (201) is a cylindrical surface, and a feeding hole group is provided in the middle of the inner side of the pillow block body (201).

2. The extruder screw pillow according to claim 1, characterized in that: The feed hole group comprises a supporting connection hole (202) provided on the inner side of the pillow block body (201), and a plurality of feed slots (203) are provided on the inner side of the pillow block body (201) and on the outer periphery of the supporting connection hole (202).

3. The extruder screw pillow according to claim 2, characterized in that: The feed hole group is arranged as a group, and the central axis of the supporting connection hole (202) is collinear with the central axis of the cylindrical surface.

4. The extruder screw pillow according to claim 2, characterized in that: The feed hole groups are set as two groups, and the two groups of feed holes are symmetrically opened on the inner side of the pillow block body (201).

5. The extruder screw pillow according to claim 4, characterized in that: The material passing notches (203) of the two material passing hole groups that are close to each other overlap with each other.

6. The extruder screw pillow according to claim 3, characterized in that: The pillow block module (200) further comprises a second pillow block body (204), the inner side of the second pillow block body (204) is symmetrically provided with a mounting cavity (208) matching the first pillow block body (201), the inner side of the second pillow block body (204) and located at the top and bottom of the mounting cavity (208) are provided with mounting grooves (209), the outer periphery of the first pillow block body (201) and located between the adjacent material passing slots (203) are provided with mounting threaded holes (206), the top and bottom of the first pillow block body (201) are provided with mounting blocks (205), and the inner sides of the two ends of the mounting blocks (205) are provided with A second mounting screw (207) is provided which matches the mounting threaded hole (206); the mounting block (205) is connected to the pillow block body (201) one via the second mounting screw (207); a positioning threaded hole (211) is provided on the pillow block body (204) and located at the top or bottom of the mounting block (205); a positioning screw (210) is provided on the inner side of the positioning threaded hole (211); the positioning screw (210) is threadedly connected to the mounting block (205); and the pillow block body (204) is connected to the mounting block (205) via the positioning screw (210).

7. The extruder screw pillow according to claim 2, characterized in that: The inner side of the pillow block body (201) is rotatably connected to a connecting inner gear ring (212), and the inner side of the connecting inner gear ring (212) is provided with a plurality of engaging teeth.

8. A screw, characterized in that: It comprises a screw module (100), wherein the screw module (100) comprises a screw body (101) and a support connector (102) connected to the end of the screw body (101), wherein the support connector (102) is adapted to the support connection hole (202) described in any one of claims 2 to 3, and the support connector (102) is integrally formed with the screw body (101) or is detachably connected.

9. A screw rod according to claim 8, characterized in that: The support connector (102) is provided with a plug-in column (103) at one end close to the screw body (101), and a plurality of connecting strips (106) are provided on the outer periphery of the plug-in column (103); a plug-in groove (104) adapted to the plug-in column (103) is provided on the inner side of the end of the screw body (101); a plurality of limiting grooves (107) adapted to the connecting strip (106) are provided on the inner side of the screw body (101) along the circumference of the plug-in groove (104); and a plurality of first mounting screws (105) threadedly connected to the plug-in column (103) are provided on the inner side of the end of the screw body (101).

10. A screw rod according to claim 8, characterized in that: The screw module (100) also includes a connecting rod (108), which is adapted to the connecting inner gear ring (212) described in claim 7, and a plurality of connecting teeth are provided on the outer side of the connecting rod (108). The screw body (101) includes a plurality of feeding sections sleeved on the connecting rod (108), and a tooth groove matching the connecting teeth is provided on the inner side of the feeding section.

Images