Extruder for injection molding of plastic products

Abstract

The utility model provides an extruder for injection molding of plastic products, which belongs to the technical field of plastic product processing and comprises an extrusion component, an extruder main machine, a support mounted on one side of the extruder main machine and a die head mounted at the output end of the extruder main machine. The forming assembly comprises a stand column installed on one side of the support, a sliding piece movably installed on the side wall of the stand column, a connecting plate installed on the side wall of the sliding piece, a main roller shaft rotationally installed in the middle of the connecting plate and an auxiliary roller shaft installed on the side wall of the connecting plate. Continuous extrusion molding of film materials can be achieved through the extrusion assembly, the materials are fully plasticized and mixed in the extrusion process, produced plastic products are more uniform, the extruded materials are pulled and stretched through the molding assembly, stable molding of the materials is kept, the extrusion molding device can adapt to molding use of the materials of different sizes, and the production efficiency is improved. And plastic products with various shapes and sizes can be produced by replacing different molds for matching.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic product processing, in particular to an extruder for injection molding of plastic products. Background Art

[0002] Extruders are widely used in fields such as plastics processing. They rely primarily on the rotating screw to generate pressure and shear forces, fully plasticizing and mixing the material within the barrel, and continuously extruding it into a finished product. After entering the barrel from the hopper, the material is conveyed forward along the screw groove as the screw rotates. During this process, the screw's flight depth gradually decreases and its pitch gradually decreases, compressing the material and subjecting it to intense shear and friction, thereby plasticizing it. The plasticized material, propelled by the screw, is extruded through the die in the die head, forming a product of the desired shape and size.

[0003] The document with application number CN202210923322.8 proposes an extruder for injection molding of plastic products. By setting a screening box, the size of the raw materials can be screened to prevent larger raw materials from entering the extruder body and causing blockage or even damage to the machine, greatly extending the service life of the device. At the same time, the extruded material is cooled by multiple fan blades, which greatly reduces the working time and is easy to use.

[0004] Although the above document can screen the materials, it does so by setting a rotating drum on the inner wall of the discharge port, which is connected to the discharge end of the extruder body, and a collecting box on one side of the cooling box. The interior of the cooling box is provided with a cooling component for cooling the material. In particular, a plurality of fan blades are provided on the outer wall fixed sleeve of the second rotating shaft in the cooling box for driving the rotation of the plurality of fan blades, thereby achieving cooling through air circulation, and being used to quickly reduce the temperature of the extruded material. As we all know, the temperature of the material just extruded from the extruder is relatively high and is in a melted state. Although blowing cooling will accelerate the cooling of the material, the wind will also leave traces of cold wind on the surface of the material, and will also cause the material to shake, affecting the molding accuracy of the material, and will also affect the appearance of the material after molding. Utility Model Content

[0005] The purpose of the utility model is to provide an extruder for injection molding of plastic products, aiming to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] An extruder for injection molding of plastic products, comprising:

[0008] An extrusion assembly comprises an extruder mainframe, a bracket mounted on one side of the extruder mainframe, a die head mounted on the output end of the extruder mainframe, and a hopper mounted on the feed inlet of the extruder mainframe;

[0009] The forming assembly includes a column installed on one side of the bracket, a sliding member movably installed on the side wall of the column, a connecting plate installed on the side wall of the sliding member, a main roller shaft rotatably installed in the middle position of the connecting plate, and an auxiliary roller shaft installed on the side wall of the connecting plate.

[0010] As a preferred solution of the present invention, the forming assembly also includes a connector slidably mounted on the inner side wall of the connecting plate, a screw rod rotatably mounted on the side wall of the connecting plate, and a handle bolt threadedly connected to the side wall of the connecting plate.

[0011] As a preferred solution of the present invention, the end of the secondary roller shaft is installed on the side wall of the connecting piece through a bearing, the end of the screw rod is threadedly connected to the center of the connecting piece, and the end of the handle bolt passes through the side wall of the connecting plate and is used in conjunction with the screw rod.

[0012] As a preferred solution of the present invention, the forming assembly further comprises a driven roller rotatably mounted on the end of the connecting plate, and the driven roller is arranged on a side away from the secondary roller shaft.

[0013] As a preferred solution of the present invention, the molding assembly further comprises a latch hole provided on the side wall of the column and a latch rod plugged into the side wall of the sliding member, and the end of the latch rod is plugged into the middle of the latch hole.

[0014] As a preferred solution of the present invention, the extrusion assembly further includes a material guide tube installed at the end of the die head and a cover plate installed at the end of the material guide tube.

[0015] As a preferred solution of the present invention, the material guide pipe is communicated with the interior of the cover plate, and the outlet at the lower end of the cover plate extends to above the main roller shaft.

[0016] As a preferred solution of the present invention, the extrusion assembly further comprises a fan installed on the side wall of the end portion of the extruder main unit, and the air outlet on the side wall of the fan is communicated with the interior of the extruder main unit housing.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the present application can realize continuous extrusion molding of film materials through the extrusion assembly, greatly reducing the downtime in the production process; through the rotation of the screw inside the extruder main body and the heating of the barrel, the material is fully plasticized and mixed during the extrusion process; this uniform plasticization effect can ensure that the extruded plastic melt has good fluidity and stability, thereby making the produced plastic products more uniform in quality and avoiding product defects caused by uneven plasticization;

[0018] This application uses a molding component to pull and stretch the extruded material to keep the material stably molded. It can adapt to the molding of materials of different sizes. Only by replacing different molds and using them together, plastic products of various shapes and sizes can be produced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0020] Figure 1 This is one of the overall structural diagrams of the utility model;

[0021] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the front structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the back structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the utility model at AA.

[0025] In the figure: 100, extrusion assembly; 101, extruder main unit; 102, bracket; 103, die head; 104, hopper; 105, material guide tube; 106, cover plate; 107, fan; 200, molding assembly; 201, column; 202, sliding part; 203, connecting plate; 204, main roller; 205, auxiliary roller; 206, connecting part; 207, screw; 208, handle bolt; 209, driven roller; 210, pin hole; 211, pin rod. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example

[0030] Reference Figure 1-5 , is an embodiment of the present utility model, which provides an extruder for injection molding of plastic products, comprising,

[0031] The extrusion assembly 100 includes an extruder main unit 101, a bracket 102 mounted on one side of the extruder main unit 101, a die head 103 mounted at the output end of the extruder main unit 101, and a hopper 104 mounted at the feed inlet of the extruder main unit 101;

[0032] The forming assembly 200 includes a column 201 installed on one side of the bracket 102, a sliding member 202 movably installed on the side wall of the column 201, a connecting plate 203 installed on the side wall of the sliding member 202, a main roller shaft 204 rotatably installed in the middle position of the connecting plate 203, and a secondary roller shaft 205 installed on the side wall of the connecting plate 203.

[0033] Among them, the extrusion component 100 can realize the continuous extrusion molding of film materials, which greatly reduces the downtime in the production process. Through the rotation of the screw inside the extruder main body 101 and the heating of the barrel, the material is fully plasticized and mixed during the extrusion process. This uniform plasticizing effect can ensure that the extruded plastic melt has good fluidity and stability, so that the produced plastic products are more uniform in quality, avoiding product defects caused by uneven plasticization. The extruded material is pulled and stretched by the molding component 200 to keep the material stably molded. It can adapt to the molding of materials of different sizes. Only by replacing different molds for use, plastic products of various shapes and sizes can be produced. The hopper 104 is used to extrude The main machine 101 replenishes materials and maintains the normal operation of the extruder main machine 101. The bracket 102 is used to install the extruder main machine 101, maintain the stability of the position of the extruder main machine 101, and facilitate the extruder main machine 101 to stably extrude materials. The die head 103 is used to cooperate with the extruder main machine 101 to extrude materials, so that the materials can be output more evenly and the uniformity of material molding is maintained. A sliding member 202 connected by a column 201 is installed on the side wall of the bracket 102. The main roller 204 and the auxiliary roller 205 are installed on the side wall of the sliding member 202 through the connecting plate 203. When the main roller 204 and the auxiliary roller 205 are driven to operate by the driving device, the material delivered to the middle of the main roller 204 and the auxiliary roller 205 can be squeezed to a specified thickness, which is convenient for the cooling and molding of the material.

[0034] Specifically, the forming assembly 200 further includes a connector 206 slidably mounted on the inner wall of the connecting plate 203 , a screw rod 207 rotatably mounted on the side wall of the connecting plate 203 , and a handle bolt 208 threadedly connected to the side wall of the connecting plate 203 .

[0035] Among them, a connecting piece 206 is added to the inner wall of the connecting plate 203 to cooperate with the installation of the secondary roller shaft 205. By adjusting the position of the connecting piece 206 along the connecting plate 203, the position of the secondary roller shaft 205 can be adjusted. The screw rod 207 is used to cooperate with the connecting plate 203 and the connecting piece 206 to facilitate the adjustment of the connecting piece 206. The handle bolt 208 is used to cooperate with the connecting plate 203 to fix the screw rod 207 and maintain the stability of the position of the screw rod 207.

[0036] Furthermore, the end of the secondary roller shaft 205 is installed on the side wall of the connecting piece 206 through a bearing, the end of the screw rod 207 is threadedly connected to the center of the connecting piece 206, and the end of the handle bolt 208 passes through the side wall of the connecting plate 203 and is used in conjunction with the screw rod 207.

[0037] Among them, the screw rod 207 is installed on the side wall of the connecting part 206. By loosening the handle bolt 208, the screw rod 207 can be rotated. On the installation basis provided by the connecting plate 203, the position of the connecting part 206 is adjusted, and then the position of the secondary roller shaft 205 is adjusted, and the distance between the main roller shaft 204 and the secondary roller shaft 205 is changed to adapt to the use of film forming of different thicknesses.

[0038] Furthermore, the forming assembly 200 further includes a driven roller 209 rotatably mounted on the end of the connecting plate 203 , and the driven roller 209 is arranged on a side away from the secondary roller shaft 205 .

[0039] A driven roller 209 is added at the end of the connecting plate 203 for use in conjunction with the driven roller 209. The driven roller 209 is used to guide the film formed between the main roller 204 and the auxiliary roller 205, and guide the film to the conveying equipment for further processing.

[0040] Preferably, the molding assembly 200 further includes a latch hole 210 provided on the side wall of the column 201 and a latch rod 211 plugged into the side wall of the sliding member 202 , with the end of the latch rod 211 plugged into the middle of the latch hole 210 .

[0041] Among them, a pin hole 210 is added to the side wall of the column 201 to match the pin rod 211 on the side wall of the sliding member 202. The pin rod 211 is inserted into the middle of the pin hole 210, which can cooperate with the column 201 to limit the sliding member 202, maintain the height stability of the main roller shaft 204 and other components installed on the side wall of the sliding member 202, and facilitate docking with conveying equipment of different heights and easy adjustment.

[0042] Preferably, the extrusion assembly 100 further includes a material guide tube 105 installed at the end of the die head 103 and a cover plate 106 installed at the end of the material guide tube 105 .

[0043] Among them, a material guide tube 105 with a cover plate 106 is installed at the end of the die head 103. The material guide tube 105 is used to extrude the material extruded by the die head 103 through the cover plate 106 to the top of the main roller 204, and the main roller 204 and the auxiliary roller 205 cooperate to extrude, cool and form, and transport it to the back-end equipment.

[0044] It should be noted that the material guide tube 105 is connected to the interior of the cover plate 106 , and the outlet at the lower end of the cover plate 106 extends to above the main roller shaft 204 .

[0045] The material guide tube 105 is used to guide the material extruded from the die head 103 to the middle of the cover plate 106 , so as to facilitate the material to be stretched and formed into the shape of the outlet of the cover plate 106 .

[0046] Preferably, the extrusion assembly 100 further includes a fan 107 installed on the side wall of the end of the extruder main body 101 , and the air outlet on the side wall of the fan 107 is connected to the interior of the housing of the extruder main body 101 .

[0047] Among them, a fan 107 is added to the side wall of the extruder main body 101, and the extruder main body 101 synchronously controls the operation of the fan 107, which can assist in cooling the extrusion part of the extruder main body 101, maintain the stability of the peripheral temperature of the extrusion screw of the extruder main body 101, and maintain uniform molding of the material.

[0048] When in use, adjust the height of the sliding member 202 to dock with the conveying equipment, then insert the pin rod 211 into the middle of the pin hole 210 of the corresponding height to fix the sliding member 202, loosen the handle bolt 208, and rotate the screw rod 207. On the installation basis provided by the connecting plate 203, adjust the position of the connecting member 206, and then adjust the position of the secondary roller 205, change the spacing between the main roller 204 and the secondary roller 205, and adapt to the use of the film that needs to be produced at present. When the main roller 204 and the secondary roller 205 are driven by the driving equipment to run, the material conveyed to the middle of the main roller 204 and the secondary roller 205 is squeezed to the specified thickness, so that the material is cooled and formed.

[0049] In summary, the extrusion component 100 can realize the continuous extrusion molding of film materials, greatly reducing the downtime in the production process. Through the rotation of the screw inside the extruder main body 101 and the heating of the barrel, the material is fully plasticized and mixed during the extrusion process. This uniform plasticizing effect can ensure that the extruded plastic melt has good fluidity and stability, so that the produced plastic products are more uniform in quality, avoiding product defects caused by uneven plasticization. The extruded material is pulled and stretched by the molding component 200 to keep the material stably molded, which can adapt to the molding of materials of different sizes. Only by replacing different molds for use in combination, plastic products of various shapes and sizes can be produced.

[0050] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0051] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0052] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. An extruder for injection molding of plastic products, characterized in that: include, An extrusion assembly (100) comprises an extruder main unit (101), a bracket (102) mounted on one side of the extruder main unit (101), a die head (103) mounted at the output end of the extruder main unit (101), and a hopper (104) mounted at the feed port of the extruder main unit (101); The forming assembly (200) comprises a column (201) mounted on one side of the bracket (102), a sliding member (202) movably mounted on the side wall of the column (201), a connecting plate (203) mounted on the side wall of the sliding member (202), a main roller (204) rotatably mounted in the middle position of the connecting plate (203), and a secondary roller (205) mounted on the side wall of the connecting plate (203).

2. The extruder for injection molding of plastic products according to claim 1, characterized in that: The molding assembly (200) further comprises a connecting piece (206) slidably mounted on the inner side wall of the connecting plate (203), a screw rod (207) rotatably mounted on the side wall of the connecting plate (203), and a handle bolt (208) threadedly connected to the side wall of the connecting plate (203).

3. The extruder for injection molding of plastic products according to claim 2, characterized in that: The end of the secondary roller shaft (205) is mounted on the side wall of the connecting piece (206) via a bearing, the end of the screw rod (207) is threadedly connected to the center of the connecting piece (206), and the end of the handle bolt (208) passes through the side wall of the connecting plate (203) and is used in conjunction with the screw rod (207).

4. The extruder for injection molding of plastic products according to claim 3, characterized in that: The forming assembly (200) further comprises a driven roller (209) rotatably mounted on the end of the connecting plate (203), wherein the driven roller (209) is arranged on a side away from the secondary roller shaft (205).

5. The extruder for injection molding of plastic products according to claim 4, characterized in that: The molding assembly (200) further comprises a latch hole (210) provided on the side wall of the column (201) and a latch rod (211) plugged into the side wall of the sliding member (202), wherein the end of the latch rod (211) is plugged into the middle of the latch hole (210).

6. The extruder for injection molding of plastic products according to claim 5, characterized in that: The extrusion assembly (100) further comprises a material guide tube (105) installed at the end of the die head (103) and a cover plate (106) installed at the end of the material guide tube (105).

7. The extruder for injection molding of plastic products according to claim 6, characterized in that: The material guide pipe (105) is communicated with the interior of the cover plate (106), and the outlet at the lower end of the cover plate (106) extends to above the main roller shaft (204).

8. The extruder for injection molding of plastic products according to claim 7, characterized in that: The extrusion assembly (100) further comprises a fan (107) mounted on the side wall of the end portion of the extruder main unit (101), and the air outlet of the side wall of the fan (107) is in communication with the interior of the housing of the extruder main unit (101).

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