Extrusion molding apparatus for thermoplastic elastomer

Abstract

The utility model relates to the technical field of plastic products, and disclose a kind of thermoplastic elastomeric plastic product extrusion forming device, this one kind thermoplastic elastomeric plastic product extrusion forming device, including extrusion equipment, the extrusion equipment includes extruder shell, the inside of extruder shell is equipped with stirring cavity, the right side of extruder shell is fixedly connected with extrusion cavity, the right side of extruder shell is fixedly connected with cooling box, and the extrusion cavity is located in the inner chamber of cooling box;Cooling mechanism, the cooling mechanism includes cooling liquid tank and U-shaped pipe, the cooling liquid tank is fixedly connected to the bottom of cooling box, by setting cooling mechanism, cooling liquid can fully cover each surface of thermoplastic elastomeric plastic product, compared with traditional single direction cooling mode, cooling contact area increases, heat exchange efficiency improves, product forming time shortens, effectively improves production rhythm, is suitable for large-scale continuous production.

Description

Technical Field

[0001] This utility model relates to an extrusion molding device for thermoplastic elastic plastic products, belonging to the technical field of plastic products. Background Technology

[0002] Plastic products are made of plastics, which are high molecular weight compounds (macromolecules) polymerized through addition or condensation reactions. They are commonly known as plastics or resins and their composition and shape can be freely changed. They are composed of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants.

[0003] Chinese Patent (Publication No.: CN 222512003 U) discloses an extruder for extruding plastic products, comprising a device body: an extrusion chamber is provided on the upper part of the device body, a collection box is fixedly installed on the top of the extrusion chamber, a groove is provided on the top of the collection box, an air collection channel is fixedly installed on the inner wall of the groove, and a fan is fixedly installed at the bottom of the air collection channel. This invention installs the air intake port inside the extrusion chamber. The plastic product is extruded into the extrusion chamber through a barrel on one side. The generated waste gas and dust can enter the interior of the collection chamber through the air collection channel and the air intake pipe under the action of the fan. The waste gas and dust enter the filter assembly for filtration treatment. The filtered dust and gas enter the dust collection bag through the dust outlet, and the filtered gas is discharged from the air outlet. After the work is completed, the dust collection bag can be removed for easy disposal of the dust. Existing thermoplastic elastomer extrusion molding equipment has some shortcomings. On the one hand, in the cooling stage, conventional cooling methods are inefficient, resulting in long molding times and affecting production efficiency. For example, in the common sleeve-type circulating cooling structure, the coolant has a short residence time inside and insufficient contact with the extruded material, resulting in poor cooling effect. On the other hand, in the raw material mixing stage, some devices rely solely on screw rotation to stir and mix the raw materials, which makes it difficult to ensure that the raw materials are fully and evenly mixed, thus affecting product quality.

[0004] Therefore, an extrusion molding device for thermoplastic elastic plastic products is proposed. Utility Model Content

[0005] In view of this, the present invention provides an extrusion molding apparatus for thermoplastic elastic plastic products to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.

[0006] The technical solution of this utility model is achieved as follows: a thermoplastic elastic plastic product extrusion molding device, comprising: An extrusion device, comprising an extruder housing, an agitation chamber formed on the inner side of the extruder housing, an extrusion chamber fixedly connected to the right side of the extruder housing, and a cooling box fixedly connected to the right side of the extruder housing, wherein the extrusion chamber is located in the inner cavity of the cooling box; The cooling mechanism includes a coolant tank and U-shaped tubes. The coolant tank is fixedly connected to the bottom of the cooling chamber. A high-pressure submersible pump is fixedly connected to the bottom of the inner cavity of the coolant tank. The output end of the high-pressure submersible pump is connected to a connecting pipe. There are two U-shaped tubes, which are fixedly connected to the front and rear sides of the right side of the inner cavity of the cooling chamber, respectively. The other end of the connecting pipe is connected to the bottom of the front U-shaped tube. Rigid pipes are connected to the upper and lower sides of the U-shaped tubes. Multiple equally spaced and identically sized water outlet pipes are connected to the inner side of each water outlet pipe. Spray heads are connected to the inner side of each water outlet pipe.

[0007] More preferably, it also includes a stirring extrusion mechanism, which includes gears and a first servo motor. There are two gears, which are movably connected to the left side of the extruder housing via rotating shafts, and the two gears mesh with each other. A rotating shaft is fixedly connected to the right side of each gear, and stirring blades are fixedly connected to the outer surface of each rotating shaft. The rotating shafts and the stirring blades are located in the stirring chamber, and the two stirring blades are staggered. The first servo motor is located on the left side of the gears, and the output end of the first servo motor is fixedly connected to the left side of the gear located on the back side.

[0008] More preferably, it also includes a conveying assembly, which includes a second servo motor and a conveying roller. The second servo motor is fixedly connected to the front side of the cooling box. There are multiple conveying rollers, all of which are movably connected to the inside of the cooling box via rotating shafts. The output end of the second servo motor is fixedly connected to the front side of the leftmost conveying roller. The outer surface of the conveying roller is provided with a conveyor belt.

[0009] More preferably, the outer surface of the conveyor belt is provided with perforations, and the number of perforations is multiple and arranged in a matrix.

[0010] More preferably, the inner wall of the stirring chamber is fixedly connected with a plurality of equally spaced and identically sized protrusions, and the protrusions are semi-circular.

[0011] More preferably, multiple equally spaced and identical fixing rods are fixedly connected to the front and rear sides of the top of the cooling box cavity, and the inner side of the fixing rods is fixedly connected to the outer surface of the top of the U-shaped tube.

[0012] More preferably, the bottom of the inner cavity of the cooling tank is provided with a plurality of equidistant and identical reflux grooves, the reflux grooves passing through the bottom of the cooling tank and the top of the coolant tank and communicating with the inner cavity of the coolant tank.

[0013] The present invention has the following advantages due to the adoption of the above technical solution: I. This utility model, by setting up a cooling mechanism, enables the coolant to fully cover all surfaces of thermoplastic elastic plastic products. Compared with the traditional unidirectional cooling method, the cooling contact area is increased, the heat exchange efficiency is improved, the product molding time is shortened, and the production cycle is effectively improved, making it suitable for large-scale continuous production.

[0014] Second, this utility model, by setting up a stirring extrusion mechanism, generates axial shear force through spirally distributed stirring blades, breaking the limitations of traditional screw mixing, effectively improving the uniformity of raw material mixing, avoiding product performance defects caused by uneven mixing, and improving the product qualification rate.

[0015] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the front view of the main body structure of this utility model; Figure 2 This is a schematic diagram of the extruder housing in the disassembled state of this utility model; Figure 3 This is a cross-sectional view of the extruder housing of this utility model; Figure 4 This is a cross-sectional view of the cooling box structure of this utility model; Figure 5 This is a schematic diagram of the disassembled stirring and extrusion mechanism of this utility model. Figure 6 This is a cross-sectional view of the coolant tank of this utility model.

[0018] Reference numerals: 100, Extrusion equipment; 101, Extruder housing; 102, Mixing chamber; 103, Extrusion chamber; 104, Cooling tank; 105, Protrusion block; 106, Fixing rod; 200, Cooling mechanism; 201, Coolant tank; 202, High-pressure submersible pump; 203, Connecting pipe; 204, U-shaped pipe; 205, Rigid pipe; 206, Water outlet pipe; 207, Spray head; 300, Mixing extrusion mechanism; 301, Gear; 302, Rotating shaft; 303, Mixing blade; 304, First servo motor; 400, Conveying assembly; 401, Second servo motor; 402, Conveying roller; 403, Conveyor belt; 404, Drain; 5, Return trough. Detailed Implementation

[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0020] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] Example 1 like Figure 1-4 As shown, this utility model embodiment provides an extrusion molding apparatus for thermoplastic elastic plastic products, comprising: The extrusion equipment 100 includes an extruder housing 101, an agitation chamber 102 is provided on the inner side of the extruder housing 101, an extrusion chamber 103 is fixedly connected to the right side of the extruder housing 101, a cooling box 104 is fixedly connected to the right side of the extruder housing 101, and the extrusion chamber 103 is located in the inner cavity of the cooling box 104. Multiple equally spaced and identically sized protrusions 105 are fixedly connected to the inner wall of the agitation chamber 102, and the protrusions 105 are semi-circular. Multiple equally spaced and identically sized fixing rods 106 are fixedly connected to the front and rear sides of the top of the inner cavity of the cooling box 104, and the inner side of the fixing rods 106 is fixedly connected to the outer surface of the top of the U-shaped tube 204. Multiple equally spaced and identically sized reflux grooves 5 are provided at the bottom of the inner cavity of the cooling box 104. The reflux grooves 5 penetrate the bottom of the cooling box 104 and the top of the coolant tank 201 and communicate with the inner cavity of the coolant tank 201. The cooling mechanism 200 includes a coolant tank 201 and U-shaped pipes 204. The coolant tank 201 is fixedly connected to the bottom of the cooling tank 104. A high-pressure submersible pump 202 is fixedly connected to the bottom of the inner cavity of the coolant tank 201. The output end of the high-pressure submersible pump 202 is connected to a connecting pipe 203. There are two U-shaped pipes 204, which are fixedly connected to the front and rear sides of the right side of the inner cavity of the cooling tank 104, respectively. The other end of the connecting pipe 203 is connected to the bottom of the front U-shaped pipe 204. The upper and lower sides of the U-shaped pipes 204 are connected to rigid pipes 205. The inner side of the U-shaped pipes 204 is connected to multiple equally spaced and identically sized water outlet pipes 206. The inner side of each water outlet pipe 206 is connected to a spray head 207.

[0022] By setting up a cooling mechanism 200, the coolant can fully cover all surfaces of the thermoplastic elastic plastic product. Compared with the traditional unidirectional cooling method, the cooling contact area is increased, the heat exchange efficiency is improved, the product molding time is shortened, and the production cycle is effectively improved, making it suitable for large-scale continuous production.

[0023] Example 2 like Figure 5 As shown, in one embodiment, a stirring extrusion mechanism 300 is also included. The stirring extrusion mechanism 300 includes gears 301 and a first servo motor 304. There are two gears 301, which are movably connected to the left side of the extruder housing 101 through rotating shafts. The two gears 301 mesh with each other through teeth. A rotating shaft 302 is fixedly connected to the right side of each gear 301. A stirring blade 303 is fixedly connected to the outer surface of each rotating shaft 302. The rotating shaft 302 and the stirring blade 303 are located in the stirring chamber 102, and the two stirring blades 303 are staggered. The first servo motor 304 is located on the left side of the gears 301, and the output end of the first servo motor 304 is fixedly connected to the left side of the gear 301 located on the back side.

[0024] By setting up a stirring extrusion mechanism 300, axial shear force is generated through spirally distributed stirring blades 303, which breaks through the limitations of traditional screw mixing, effectively improves the uniformity of raw material mixing, avoids product performance defects caused by uneven mixing, and improves the product qualification rate.

[0025] Example 3 like Figure 6As shown, in one embodiment, a conveying assembly 400 is also included. The conveying assembly 400 includes a second servo motor 401 and a conveying roller 402. The second servo motor 401 is fixedly connected to the front side of the cooling box 104. There are multiple conveying rollers 402, all of which are movably connected to the inside of the cooling box 104 through a rotating shaft. The output end of the second servo motor 401 is fixedly connected to the front side of the leftmost conveying roller 402. A conveyor belt 403 is provided on the outer surface of the conveyor roller 402. The outer surface of the conveyor belt 403 is provided with multiple holes 404, which are arranged in a matrix.

[0026] By setting up the conveying component 400, the thermoplastic elastomer can be easily conveyed after extrusion. During the conveying process, the cooling mechanism 200, combined with the design of the perforation 404, allows the coolant to fully cover all surfaces of the thermoplastic elastomer, including the bottom surface in contact with the conveyor belt 403.

[0027] In operation, this invention works as follows: First, the raw material is placed into the mixing chamber 102. The output of the first servo motor 304 drives the gear 301 located on the back side to rotate. The gear 301 on the back side drives the gear 301 located on the front side to rotate through tooth meshing, thereby driving the rotating shaft 302 and the mixing blades 303 to rotate. The helical distribution of the mixing blades 303 generates axial shear force, which, together with the radial turbulence formed by the protrusions 105 in the inner wall of the mixing chamber 102, breaks the limitations of traditional screw mixing, achieving simultaneous mixing and extrusion. Subsequently, the thermoplastic elastic plastic product is extruded through the extrusion chamber 103 and extruded to the top of the conveyor belt 403. At this time, the input of the high-pressure submersible pump 202 generates suction, drawing the coolant from the inner cavity of the coolant tank 201. The coolant is sprayed from the output end of the high-pressure submersible pump 202, and then passes through the connecting pipe 203, U-shaped pipe 204, rigid pipe 205 and water outlet pipe 206. Finally, it sprays and cools the thermoplastic elastic plastic product through the spray head 207. During the spraying process, the output end of the second servo motor 401 drives the leftmost conveyor roller 402 to rotate, so that the conveyor belt 403 and other conveyor rollers 402 work together to move the thermoplastic elastic plastic product from left to right. This allows the coolant to fully cover all surfaces of the thermoplastic elastic plastic product, including the bottom surface in contact with the conveyor belt 403. Compared with the traditional unidirectional cooling method, the cooling contact area is increased, the heat exchange efficiency is improved, the product molding time is shortened, and the production cycle is effectively improved, making it suitable for large-scale continuous production.

[0028] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An extrusion molding apparatus for thermoplastic elastic plastic products, characterized in that, include: An extrusion apparatus (100) includes an extruder housing (101), an agitation chamber (102) is provided on the inner side of the extruder housing (101), an extrusion chamber (103) is fixedly connected to the right side of the extruder housing (101), a cooling box (104) is fixedly connected to the right side of the extruder housing (101), and the extrusion chamber (103) is located in the inner cavity of the cooling box (104); Cooling mechanism (200) includes a coolant tank (201) and a U-shaped tube (204). The coolant tank (201) is fixedly connected to the bottom of the cooling tank (104). A high-pressure submersible pump (202) is fixedly connected to the bottom of the inner cavity of the coolant tank (201). The output end of the high-pressure submersible pump (202) is connected to a connecting pipe (203). There are two U-shaped tubes (204), which are fixedly connected to the front and rear sides of the right side of the inner cavity of the cooling tank (104). The other end of the connecting pipe (203) is connected to the bottom of the U-shaped tube (204) located on the front side. The upper and lower sides of the U-shaped tubes (204) are connected to rigid pipes (205). The inner side of the U-shaped tubes (204) is connected to multiple equally spaced and identically sized water outlet pipes (206). The inner side of each water outlet pipe (206) is connected to a spray head (207).

2. The apparatus of claim 1 wherein: It also includes a stirring extrusion mechanism (300), which includes gears (301) and a first servo motor (304). There are two gears (301), which are movably connected to the left side of the extruder housing (101) through rotating shafts. The two gears (301) mesh with each other through teeth. A rotating shaft (302) is fixedly connected to the right side of each gear (301). A stirring blade (303) is fixedly connected to the outer surface of each rotating shaft (302). The rotating shaft (302) and the stirring blade (303) are located in the stirring chamber (102). The two stirring blades (303) are staggered. The first servo motor (304) is located on the left side of the gear (301). The output end of the first servo motor (304) is fixedly connected to the left side of the gear (301) located on the back side.

3. The thermoplastic elastic plastic product extrusion molding apparatus according to claim 1, characterized in that: It also includes a conveying assembly (400), which includes a second servo motor (401) and a conveying roller (402). The second servo motor (401) is fixedly connected to the front side of the cooling box (104). There are multiple conveying rollers (402), all of which are movably connected to the inside of the cooling box (104) through a rotating shaft. The output end of the second servo motor (401) is fixedly connected to the front side of the leftmost conveying roller (402). The outer surface of the conveying roller (402) is provided with a conveyor belt (403).

4. The apparatus of claim 3 wherein: The outer surface of the conveyor belt (403) is provided with perforations (404), and there are multiple perforations (404) arranged in a matrix.

5. The apparatus of claim 1 wherein: the extruder is a single screw extruder. The inner wall of the stirring chamber (102) is fixedly connected with a plurality of equally spaced and identical protrusions (105), and the protrusions (105) are semi-circular.

6. The apparatus of claim 1 wherein: the extruder is a single screw extruder. Multiple equally spaced and identical fixed rods (106) are fixedly connected to the front and rear sides of the top of the inner cavity of the cooling box (104), and the inner side of the fixed rods (106) is fixedly connected to the outer surface of the top of the U-shaped tube (204).

7. The apparatus of claim 1 wherein: the apparatus further comprises a second extruder for forming a second thermoplastic elastomeric article; and the apparatus further comprises a second die for forming a second thermoplastic elastomeric article. The bottom of the inner cavity of the cooling tank (104) is provided with multiple equidistant and identical reflux channels (5). The reflux channels (5) penetrate the bottom of the cooling tank (104) and the top of the coolant tank (201) and are connected to the inner cavity of the coolant tank (201).

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