Extrusion structure for plastic forming equipment and operation method of extrusion structure

Abstract

The invention relates to the technical field of plastic forming manufacturing, in particular to an extrusion structure for plastic forming equipment and an operation method thereof.The extrusion structure comprises an extrusion assembly, a heat dissipation assembly, a heating assembly, a control assembly and a spray head body, the extrusion assembly is arranged in the spray head body, and the control assembly is arranged on the upper portion of the rear portion of the spray head body; the heat dissipation assembly is arranged in the spray head body, located under the extrusion assembly and tightly connected with the extrusion assembly in an inserted mode. The heating assembly is arranged on the lower portion of the heat dissipation assembly and connected with the heat dissipation assembly. According to the extrusion structure for the plastic forming equipment, rapid feeding and melting discharging of silk materials can be achieved, meanwhile, an innovative air outlet structure is adopted, rapid cooling in the forming and printing process of large products is guaranteed, the production efficiency is improved, and the production cost is reduced. And the use requirements of enterprises on plastic forming equipment are effectively met.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic forming manufacturing, in particular to an extrusion structure for plastic forming equipment and an operating method thereof. Background Art

[0002] Plastic molding printing is a technology that manufactures physical parts by adding material layer by layer. From its early days as a rapid prototyping technology to its current widespread application, plastic molding printing technology has found applications in design and manufacturing fields such as jewelry design, footwear design and manufacturing, industrial design, architectural design, engineering design and construction, and automotive design and manufacturing, as well as in medical fields such as aerospace and dentistry. With the advancement of science and technology, more and more industries are demanding high-throughput printing from plastic molding printing equipment. However, due to technological limitations, existing plastic molding printing equipment cannot meet this demand. Specifically, the following problems exist: 1. When the auxiliary feeding wheel and the active feeding wheel in the extrusion assembly of the existing plastic molding printing equipment are extruding and conveying the filament, the filament between the auxiliary feeding wheel and the active feeding wheel will slip due to friction loss or elastic force attenuation. Especially for the dual feeding method with a large flow rate, the filament sliding state is particularly obvious, affecting the overall feeding of the plastic molding printing equipment; at the same time, the existing active feeding wheel is directly installed on the drive motor shaft. Under long-term operation, the operating stability is poor, which also affects the extrusion and conveying of the filament; 2. The feed hole in the heat dissipation assembly of existing plastic molding printing equipment is a straight-through hole structure. During the feeding process, the filament is in smooth contact with the straight-through hole. Since the lower part of the heat dissipation assembly is connected to the heating assembly, the heating assembly will conduct heat to the lower part of the heat dissipation assembly, causing the filament in the straight-through hole structure in the heat dissipation assembly to expand due to heat on the side close to the heating assembly, contacting the inner wall of the straight-through hole, thereby increasing the resistance to the filament moving downward and affecting the smoothness of feeding; 3. In existing plastic molding printing equipment, the heating assembly includes a heating channel. To facilitate the entry of filament from the heat dissipation assembly into the heating channel, the existing heating channel has a relatively large diameter. Although this facilitates the entry of filament, the large diameter of the heating channel reduces the contact between the filament and the heating block, hindering the heating block's ability to melt and heat the filament. This is particularly important for high-flow plastic molding printing, as the existing heating block requires innovative improvements to meet these requirements. In summary, existing plastic molding printing equipment is limited by factors such as the feeding method of its extrusion structure, the feeding structure design, and the cooling and shaping during the molding and printing process. The size of the molded parts that can be printed is generally small and cannot meet the increasing industrial demand. Summary of the Invention

[0003] The main purpose of the present invention is to provide an extrusion structure for plastic molding equipment and an operating method thereof. The extrusion structure for plastic molding equipment can realize rapid feeding and melting and discharging of filaments. At the same time, the innovative air outlet structure is adopted to ensure rapid cooling during the molding and printing process of large products, effectively meeting the needs of enterprises for the use of plastic molding equipment.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: An extrusion structure for plastic molding equipment includes an extrusion assembly, a heat dissipation assembly, a heating assembly, a control assembly, and a nozzle body. The extrusion assembly is arranged inside the nozzle body, and the control assembly is arranged on the upper rear portion of the nozzle body. The heat dissipation assembly is arranged inside the nozzle body, directly below the extrusion assembly and tightly plugged with the extrusion assembly; the heating assembly is arranged below the heat dissipation assembly and connected to the heat dissipation assembly; a discharge nozzle is installed at the bottom of the heating assembly, and air-cooling and shaping assemblies are arranged on both sides of the discharge nozzle. The air-cooling and shaping assemblies are connected to the nozzle body by bolts and are used to cool and shape the product during the molding and printing process; The extrusion assembly includes: a first extrusion fixing part, a hinge screw, a second extrusion fixing part, an extrusion connecting part, an auxiliary feeding wheel, and an active feeding wheel, the first extrusion fixing part is arranged at the upper position inside the nozzle main body, the active feeding wheel is arranged on the upper part of the heat dissipation component, and the auxiliary feeding wheel is arranged on the side opposite to the active feeding wheel, the lower part of the extrusion connecting part is rotatably connected to the auxiliary feeding wheel, the upper part of the extrusion connecting part is rotatably connected to the first extrusion fixing part by a hinge screw, and a feeding motor is installed at the rear of the nozzle main body, the power output end of the feeding motor is connected to the active feeding wheel and drives the active feeding wheel to rotate and feed, the upper part of the second extrusion fixing part is connected to the first extrusion fixing part by bolts, and a bearing seat is provided below the second extrusion fixing part, and a sliding bearing is installed in the bearing seat, the power output end of the feeding motor extends to the sliding bearing after passing through the active feeding wheel and is slidably supported by the sliding bearing to meet the stable support of the power output end of the feeding motor, thereby ensuring the working stability of the active feeding wheel; Furthermore, a dual-channel feed port is provided on the first extrusion fixture, and the dual-channel feed port is provided on the first extrusion fixture from top to bottom. At the same time, two groups of long strip through holes are also provided on the first extrusion fixture.

[0005] Furthermore, adjustment studs are provided in both groups of long strip through holes, the bottom of the adjustment studs is connected to the top of the extruded connector, an adjustment nut is threadedly installed on the adjustment studs, and an adjustment spring is mounted on the adjustment studs on the lower side of the adjustment nut. The adjustment spring is located between the adjustment nut and the long strip through hole to ensure that the adjustment studs exert a stable upward pulling force on the extruded connector.

[0006] Two groups of clamping ring grooves are provided on the auxiliary feeding wheel, and two groups of clamping tooth grooves are provided on the active feeding wheel. The two groups of clamping ring grooves provided on the auxiliary feeding wheel are arranged corresponding to the two groups of clamping tooth grooves provided on the active feeding wheel. During operation, the wire material is located between the two groups of clamping ring grooves and the two groups of clamping tooth grooves, and enters the heat dissipation component under the action of the rotating conveying force of the two groups of clamping tooth grooves.

[0007] Furthermore, in order to facilitate the replacement of different models of active feeding wheels, an assembly hole is opened in the center of the active feeding wheel, and a threaded locking hole is opened on the lower side of the active feeding wheel in a direction perpendicular to the assembly hole. The threaded locking hole is connected to the assembly hole, and a locking screw is set in the threaded locking hole. The active feeding wheel is installed at the power output end of the feeding motor through the assembly hole, and the active feeding wheel is locked to the power output end of the feeding motor by the locking screw.

[0008] Furthermore, the heat dissipation component includes: a heat dissipation module and a heat dissipation fan. The heat dissipation module is arranged directly above the heating component and is tightly connected to the heating component. The heat dissipation fan is fixedly connected to the heat dissipation module and is located above the heating component. Two groups of feed holes are processed inside the heat dissipation module. The feed holes are divided into an opening section, a middle section and a thickened section. The opening section, the middle section and the thickened section are connected in sequence. The opening section is a wide-mouth structure to facilitate the entry of the wire material. The inner diameter of the thickened section is larger than the inner diameter of the middle section, so that the wire material has thermal expansion space after being heated and will not be blocked.

[0009] Furthermore, the heating component is arranged inside the nozzle body, directly below the heat dissipation component, and is fixedly connected to the heat dissipation component. The heating component includes a heating block, which is fixedly connected between fixed frames symmetrically arranged inside the nozzle body.

[0010] Furthermore, two groups of heating channels are processed inside the heating block, and a threaded hole suitable for installing the discharge nozzle is processed at the lower part of the heating block. The two groups of heating channels are connected to the threaded holes, and the discharge nozzle is screwed into the threaded hole through a threaded knob. In order to facilitate the entry of the wire into the heating channel and to perform contact heating on the wire after entering, the heating channel is divided into an inlet section and a heating section, and the inner diameter of the inlet section is larger than the inner diameter of the heating section.

[0011] Furthermore, the air-cooled shaping component includes a fixed bracket, an air cooler and an air guide; the fixed bracket is an L-shaped frame structure as a whole, and the fixed bracket is installed on both sides of the lower part of the nozzle body by bolts, the air cooler is installed on the upper part of the fixed bracket, and the air guide is installed on the lower part of the fixed bracket. A main air outlet is opened in the lower part of the inner cavity of the air guide, and a side air outlet is processed on the side of the inner cavity of the air guide. The side air outlet is an oblique diamond structure as a whole, so that the cooling air can be concentrated to the discharge and molding area of ​​the discharge nozzle, thereby realizing rapid discharge, molding and cooling of the wire material.

[0012] The operating method of the extrusion structure for plastic molding equipment of the present invention comprises the following steps: S1. Feed the filament through the dual-channel feed port on the first extrusion fixture in the extrusion assembly. After entering, the filament is positioned between the auxiliary feeding wheel and the active feeding wheel. One side of the filament contacts the clamping ring groove on the auxiliary feeding wheel, while the other side of the filament contacts the clamping ring groove on the active feeding wheel. S2. To ensure that the filament has a stable contact friction between the auxiliary feeding wheel and the active feeding wheel, the operator can adjust and rotate the adjusting nut to compress the adjusting spring, so that the adjusting spring pushes the adjusting nut upward with an upward elastic force to achieve a stable upward pulling force of the adjusting stud on the extrusion connector. The extrusion connector drives the auxiliary feeding wheel to stably clamp the filament between the auxiliary feeding wheel and the active feeding wheel to prevent the filament from slipping; S3, the wire material passes through between the auxiliary feeding wheel and the active feeding wheel and enters the feeding hole in the heat dissipation module, and passes through the opening section, the middle section, and the thickened section of the feeding hole in sequence; S4, after passing through the feed hole, it enters the heating channel in the heating block. The heating channel is divided into an inlet section and a heating section. To facilitate the entry of the wire into the heating channel, the inner diameter of the inlet section corresponds to the thickened section in the heat dissipation module. S5. In order to facilitate the contact between the wire and the heating channel and thus achieve rapid melting, the inner diameter of the heating section is smaller than the inner diameter of the inlet section, and the length L of the heating section is greater than the length S of the inlet section (S<1 / 3L). A threaded hole connected to the heating channel is processed at the lower part of the heating block. The melted wire converges at the threaded hole and is finally extruded from the discharge nozzle for plastic molding of the wire.

[0013] The beneficial effects of the present invention are as follows: the overall structural design of the extrusion structure for plastic molding equipment of the present invention is scientific, and when used in practice, it has the following technical characteristics and advantages: 1. It can ensure the stable clamping and conveying of the wire material; the two groups of long strip through holes on the first extrusion fixing piece of the present invention are both provided with adjustment studs, the bottom of the adjustment studs is connected to the top of the extrusion connecting piece, an adjustment nut is threadedly installed on the adjustment studs, and an adjustment spring is sleeved on the adjustment stud on the lower side of the adjustment nut. The adjustment spring pushes the adjustment nut upward with elastic force to achieve a stable upward pulling force of the adjustment stud on the extrusion connecting piece, and the extrusion connecting piece drives the auxiliary feeding wheel to stably clamp the wire material between the auxiliary feeding wheel and the active feeding wheel to prevent the wire material from slipping; 2. It can ensure that the wire material passes through the heat dissipation module; the present invention has two groups of feed holes processed in the heat dissipation module. The feed holes are divided into an open section, a middle section and a thickened section from top to bottom. The open section has a wide-mouth structure to facilitate the entry of the wire material. When the wire material passes through the two groups of feed holes, it enters the middle section from the open section and then into the thickened section. The inner diameter of the thickened section is designed to be larger than the inner diameter of the middle section so that the wire material has space for thermal expansion after being heated and will not be blocked, thereby ensuring that the wire material passes through the heat dissipation module stably and smoothly; 3. It can ensure that the wire material stably enters the heating component from the heat dissipation module and contacts and melts in the heating component; two sets of heating flow channels are processed inside the heating block, and the heating flow channels are divided into an inlet section and a heating section. In order to facilitate the entry of the wire material into the heating flow channel, the inner diameter of the inlet section corresponds to the thickened section in the heat dissipation module. At the same time, the inner diameter of the heating section is smaller than the inner diameter of the inlet section, which facilitates the contact between the wire material and the heating flow channel and thus achieves rapid melting. A threaded hole connected to the heating flow channel is processed at the bottom of the heating block, and the melted wire material converges at the position of the threaded hole; 4. It can ensure the rapid cooling and shaping of printed products; air-cooling shaping components are arranged on both sides of the discharge nozzle, and a main air outlet is opened at the lower part of the inner cavity of the air guide in the air-cooling shaping component. Side air outlets are processed on the side of the inner cavity of the air guide. The overall design of the side air outlet is an oblique diamond structure. The cooling air can flow to the discharge molding area of ​​the discharge nozzle through the main air outlet and the side air outlet of the oblique diamond structure, realizing rapid discharge, molding and cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the overall structure of the extrusion structure for plastic molding equipment of the present invention; Figure 2 It is a partial enlarged view of the present invention; Figure 3 Schematic diagram of the structure of the first extrusion fixing member in the present invention; Figure 4 Schematic diagram of the overall structure of the heat dissipation module in the present invention; Figure 5 is a cross-sectional view of the heat dissipation module of the present invention; Figure 6 Schematic diagram of the structure of the heating block in the present invention; Figure 7 is a schematic cross-sectional view of the heating block of the present invention; Figure 8 Schematic diagram of the structure of the active feeding wheel in the present invention; Figure 9 Schematic diagram of the structure of the second extrusion fixing member in the present invention; Figure 10 This is a schematic diagram of half of the structure of the extruded connector in the present invention; Figure 11Schematic diagram of the structure of the air-cooling shaping component in the present invention; Figure 12 Schematic diagram of the structure of the extrusion assembly in the present invention; The numbers in the figure are: 1-extrusion assembly, 2-heating assembly, 3-heating assembly, 4-control assembly, 5-nozzle body, 6-discharge nozzle, 7-air cooling shaping assembly, 8-filament; 11-first extrusion fixing part, 12-hinged screw, 13-extrusion connecting part, 14-second extrusion fixing part, 15-auxiliary feeding wheel, 16-active feeding wheel, 17-feeding motor; 111-dual channel feeding port, 112-long strip through hole; 131-adjusting stud, 132-adjusting nut, 133-adjusting Spring, 134-long slot through hole; 141-bearing seat; 151-clamping ring groove, 161-clamping tooth groove, 162-assembly hole, 163-thread locking hole; 21-heating module, 22-feed through hole, 221-opening section, 222-middle section, 223-thickened section; 31-heating block, 32-heating flow channel, 321-inlet section, 322-heating section, 323-threaded hole; 71-fixed bracket, 72-air cooler, 73-air deflector, 74-main air outlet, 75-side air outlet. DETAILED DESCRIPTION

[0015] Specific embodiment 1: In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that: in the present invention, unless otherwise specified, all the implementation methods and preferred implementation methods mentioned herein can be combined with each other to form a new technical solution. In the present invention, unless otherwise specified, all the technical features and preferred features mentioned herein can be combined with each other to form a new technical solution. The "scope" disclosed in the present invention can be in the form of lower limits and upper limits, and can be one or more lower limits, and one or more upper limits, respectively. Unless otherwise specified, the professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art.

[0016] As the instruction manual Figure 1 , Instruction Manual Figure 2 , Instruction Manual Figure 9 , Instruction Manual Figure 10 And the instruction manual Figure 12As shown, in view of the problem that the existing plastic molding printing equipment is limited by the feeding method of its extrusion structure, the feeding structure and the cooling and shaping during the molding and printing process, the size of the molding and printing is generally small and cannot meet the increasing industrial needs, the present invention is designed to provide an extrusion structure for plastic molding equipment, which includes an extrusion component 1, a heat dissipation component 2, a heating component 3, a control component 4, and a nozzle body 5. The nozzle body 5 is used to install and support the extrusion component 1, the heat dissipation component 2, the heating component 3 and the control component 4; when installed, the extrusion component 1 is installed in the upper position inside the nozzle body 5, and the nozzle body is provided with a plurality of nozzles. A control assembly 4 for controlling the operation of the extrusion assembly 1, the heat dissipation assembly 2, and the heating assembly 3 is provided at the upper rear portion of the nozzle body 5. The heat dissipation assembly 2 for dissipating heat to the filament 8 is provided inside the nozzle body 5 and is located directly below the extrusion assembly 1 and is tightly plugged into the extrusion assembly 1. The heating assembly 3 for heating the filament 8 is provided below the heat dissipation assembly 2 and is connected to the heat dissipation assembly 2. A discharge nozzle 6 is installed at the bottom of the heating assembly 3, and air-cooling and shaping assemblies 7 are arranged on both sides of the discharge nozzle 6. The air-cooling and shaping assemblies 7 are connected to the nozzle body 5 by bolts and are used to cool and shape the product during the molding and printing process. The extrusion assembly 1 for extruding and conveying the wire material 8 includes: a first extrusion fixing member 11, a hinge screw 12, a second extrusion fixing member 14, an extrusion connecting member 13, an auxiliary feeding wheel 15, and an active feeding wheel 16, wherein the first extrusion fixing member 11 is arranged at the upper position inside the nozzle body 5 for installing the second extrusion fixing member 14 and the extrusion connecting member 13, the active feeding wheel 16 is arranged on the upper part of the heat dissipation component 2, and the auxiliary feeding wheel 15 is arranged on the corresponding side of the active feeding wheel 16. The lower part of the extrusion connecting member 13 is rotatably connected to the auxiliary feeding wheel 15, and the upper part is connected to the first extrusion fixing member 11 through a hinge screw. The wire 12 is rotationally connected, and a feeding motor 17 is installed at the rear of the nozzle body 5. During installation, the power output end of the feeding motor 17 is connected to the active feeding wheel 16 and drives the active feeding wheel 16 to rotate and feed; the upper part of the second extrusion fixing member 14 is connected to the first extrusion fixing member 11 by bolts, and a bearing seat 141 is provided at the lower part of the second extrusion fixing member 14. A sliding bearing is installed in the bearing seat 141, and the power output end of the feeding motor 17 passes through the active feeding wheel 16 and extends to the sliding bearing to meet the stable support of the power output end of the feeding motor 17, thereby ensuring the working stability of the active feeding wheel 16.

[0017] As the instruction manual Figure 2 And the instruction manual Figure 3As shown, a dual-channel feed port 111 adapted for the entry of the wire material 8 is provided on the first extrusion fixing member 11 for installing the second extrusion fixing member 14 and the extrusion connecting member 13. The dual-channel feed port 111 is arranged from top to bottom on the first extrusion fixing member 11. At the same time, two groups of long strip through holes 112 are also provided on the first extrusion fixing member 11, and a long slot through hole 134 adapted for the wire material 8 to pass through is provided on the extrusion connecting member 13. During installation, the long slot through hole 134 is arranged corresponding to the dual-channel feed port 111, and the long slot through hole 134 can guide the wire material 8 in the front and rear directions to ensure that the wire material 8 stably enters between the clamping ring groove 151 and the clamping tooth groove 161. Adjustment studs 131 are passed through both groups of long strip through holes 112 (the size of the long strip through holes 112 needs to ensure that the adjustment studs 131 have room for adjustment to move up and down), the bottom of the adjustment studs 131 is connected to the top of the extrusion connector 13 (it can be a movable connection), and an adjustment nut 132 is threadedly installed on the adjustment stud 131. An adjustment spring 133 is mounted on the adjustment stud 131 on the lower side of the adjustment nut 132. The adjustment spring 133 is located between the adjustment nut 132 and the long strip through holes 112 to ensure a stable upward pulling force of the adjustment stud 131 on the extrusion connector 13, thereby ensuring that the auxiliary feeding wheel 15 on the extrusion connector 13 applies a stable contact friction force to the wire material 8, thereby ensuring stable feeding of the wire material 8 between the auxiliary feeding wheel 15 and the active feeding wheel 16.

[0018] As the instruction manual Figure 2 And the instruction manual Figure 8 As shown, in order to ensure stable clamping and conveying of the wire material 8, two groups of clamping ring grooves 151 are provided on the auxiliary feeding wheel 15, and two groups of clamping tooth grooves 161 are provided on the active feeding wheel 16 (arc-shaped teeth in contact with the wire material 8 are provided in the clamping tooth grooves 161, and the arc-shaped teeth can increase the contact friction with the wire material 8). The two groups of clamping ring grooves 151 provided on the auxiliary feeding wheel 15 are arranged corresponding to the two groups of clamping tooth grooves 161 provided on the active feeding wheel 16. During operation, the wire material 8 is between the two groups of clamping ring grooves 151 and the two groups of clamping tooth grooves 161, and enters the heat dissipation component 2 under the rotation action of the two groups of clamping tooth grooves 161. In order to facilitate the replacement of different models of the active feeding wheel 16, an assembly hole 162 is opened in the center of the active feeding wheel 16, and a threaded locking hole 163 is opened on the lower side of the active feeding wheel 16 in a direction perpendicular to the assembly hole 162. The threaded locking hole 163 is connected to the assembly hole 162, and a locking screw is set in the threaded locking hole 163. When installing, in order to facilitate disassembly and assembly, the installation of the active feeding wheel 16 has a directionality (as shown in the attached manual). Figure 8 As shown in the figure, it has an inner assembly side A and an outer assembly side B), as shown in the attached manual. Figure 2 And the instruction manual Figure 8As shown, the active feeding wheel 16 can be installed at the power output end of the feeding motor 17 through the assembly hole 162 (the A side of the active feeding wheel 16 is close to the feeding motor 17, and the B side is close to the second extrusion fixing member 14), and the active feeding wheel 16 is locked to the power output end of the feeding motor 17 by a locking screw.

[0019] As the instruction manual Figure 4 And the instruction manual Figure 5 As shown, the heat dissipation component 2 for dissipating heat to the wire 8 before entering the heating block 31 includes: a heat dissipation module 21 and a heat dissipation fan, wherein the heat dissipation module 21 is arranged just above the heating component 3 and is tightly connected to the heating component 3, and the heat dissipation fan for providing heat dissipation air is fixedly connected to the heat dissipation module 21 and is located above the heating component 3, and two groups of feed holes 22 adapted for the wire 8 to pass through are machined inside the heat dissipation module 21, wherein the feed holes 22 are divided into an opening section 221, a middle section 222 and a thickened section 2 23. The opening section 221, the middle section 222 and the thickened section 223 are connected in sequence. The opening section 221 is a wide-mouth structure to facilitate the entry of the wire material 8. The middle section 222 is used to guide the wire material 8 to enter. The inner diameter of the thickened section 223 in the feed hole 22 is larger than the inner diameter of the middle section 222, so that the wire material 8 has space for thermal expansion after being heated, avoiding the expansion and friction contact between the wire material 8 and the inner wall of the hole below the feed hole 22 of the heat dissipation module 21, thereby ensuring that the wire material 8 smoothly enters the heating block 31 and ensures stable feeding of the wire material 8.

[0020] As the instruction manual Figure 6 And the instruction manual Figure 7 As shown, the heating component 3 for heating the wire material 8 is arranged inside the nozzle body 5, directly below the heat dissipation component 2, and fixedly connected to the heat dissipation component 2. The heating component 3 includes a heating block 31, which is fixedly connected between the fixed frames symmetrically arranged inside the nozzle body 5. At the same time, two groups of heating channels 32 for heating and melting the wire material 8 are processed inside the heating block 31, and a threaded hole 323 for installing the discharge nozzle 6 is processed at the lower part of the heating block 31. The two groups of heating channels 32 are connected with the threaded hole 323, and the discharge nozzle 6 is screwed in the threaded hole 323 by a threaded knob. It should be pointed out that in order to facilitate the wire material 8 to enter the heating channel 32 and to perform contact heating on the wire material 8 after entering, the heating channel 32 is divided into an inlet section 321 and a heating section 322. The inner diameter of the inlet section 321 in the heating channel 32 is larger than the inner diameter of the heating section 322, and the length of the inlet section 321 is smaller than the length of the heating section 322, so as to ensure that the heating section 322 can have an effective contact stroke with the wire material 8 and achieve sufficient melting of the wire material 8.

[0021] As the instruction manual Figure 11As shown, the air-cooled shaping component 7 for cooling and shaping the molded product includes a fixed bracket 71, an air cooler 72 and an air guide 73; wherein, the fixed bracket 71 is used to install and support the air cooler 72 and the air guide 73, and the fixed bracket 71 is an L-shaped frame structure as a whole. During installation, the fixed bracket 71 is mounted on both sides of the lower part of the nozzle body 5 by bolts, and the air cooler 72 is mounted on the upper part of the fixed bracket 71, and the air guide 73 is mounted on the lower part of the fixed bracket 71. A main air outlet 74 for cooling air outflow is opened at the lower part of the inner cavity of the air guide 73. The main air outlet 74 is used for primary cooling of the molded product. At the same time, a side air outlet 75 is processed on the side surface of the inner cavity of the air guide 73. The side air outlet 75 is an oblique diamond structure as a whole, so that the cooling air can be concentrated to flow to the discharge molding area of ​​the discharge nozzle 6, perform secondary cooling on the molded product, and realize rapid discharge molding cooling.

[0022] When installing an extrusion structure for plastic molding equipment designed and provided by the present invention, the installer can first install the extrusion component 1. During the specific installation, the first extrusion fixing part 11 can be installed at the upper position inside the nozzle body 5, the active feeding wheel 16 can be installed on the upper part of the heat dissipation component 2, and the auxiliary feeding wheel 15 can be installed on the corresponding side of the active feeding wheel 16. The upper part of the second extrusion fixing part 14 is connected to the first extrusion fixing part 11 by bolts, and the auxiliary feeding wheel 15 is rotatably installed at the lower part of the extrusion connecting part 13. The upper part is rotatably connected to the first extrusion fixing part 11, and the feeding motor 17 is installed at the rear of the nozzle body 5. The power output end of the feeding motor 17 is installed and connected to the active feeding wheel 16. Then, the heat dissipation component 2 and the heating component 3 are installed. The heat dissipation module 21 can be installed just above the heating component 3 and tightly connected to the heating component 3. The heat dissipation fan for providing heat dissipation air is fixed to the heat dissipation module 21. Two sets of feed holes 22 for the wire 8 to pass through are processed inside the heat dissipation module 21. The feed holes 22 are divided into an opening section 221, a middle section 222 and a thickened section 223, and the three are connected in sequence. The opening section 221 is designed to be a wide-mouthed (bowl-shaped) structure to facilitate the entry of the wire 8 (in order to facilitate smooth contact (insertion) of the wire 8, as shown in the attached manual). Figure 2 And the instruction manual Figure 4As shown, the opening section 221 on the heat dissipation module 21 protrudes from the heat dissipation module 21 and extends to the gap below the auxiliary feeding wheel 15 and the active feeding wheel 16). The middle section 222 is used to guide the wire 8 to enter. The inner diameter of the thickened section 223 in the feed hole 22 is larger than the inner diameter of the middle section 222, so that the wire 8 has space for thermal expansion after being heated, avoiding the wire 8 from clogging the feed hole 22, and ensuring the stable feeding of the wire 8. The heating component 3 is installed inside the nozzle body 5, directly below the heat dissipation component 2, and is fixedly connected to the heat dissipation component 2. Two sets of heating channels 32 are machined inside the heating block 31, and a threaded hole 323 is machined at the lower part of the heating block 31. The two sets of heating channels 32 are connected to the threaded hole 323. The discharge nozzle 6 is screwed into the threaded hole 323 by a threaded knob. At this point, the installation process of the present invention is completed. During specific use, the wire material 8 enters the long slot through hole 134 on the extrusion connector 13 from the dual-channel feed port 111 opened on the first extrusion fixing member 11 in the extrusion assembly 1. After passing through the long slot through hole 134, the wire material 8 enters and is located between the auxiliary feeding wheel 15 and the active feeding wheel 16. At this time, one side of the wire material 8 contacts the clamping ring groove 151 on the auxiliary feeding wheel 15, and the other side of the wire material 8 contacts the clamping ring groove 151 on the active feeding wheel 16. In order to ensure that the wire material 8 has a stable contact friction between the auxiliary feeding wheel 15 and the active feeding wheel 16, a screw thread is installed on the adjusting stud 131. The adjusting nut 132 is provided with an adjusting spring 133 on the adjusting stud 131 on the lower side of the adjusting nut 132. The operator can adjust and rotate the adjusting nut 132 to compress the adjusting spring 133, so that the adjusting spring 133 pushes the adjusting nut 132 upward with an elastic force to achieve a stable upward pulling force of the adjusting stud 131 on the extrusion connector 13. The extrusion connector 13 drives the auxiliary feeding wheel 15 to stably clamp the wire 8 between the auxiliary feeding wheel 15 and the active feeding wheel 16 to prevent the wire 8 from slipping. The wire 8 passes through between the auxiliary feeding wheel 15 and the active feeding wheel 16 and enters the heat dissipation module 2 1, and sequentially penetrates the opening section 221, the middle section 222, and the thickened section 223 in the feed through hole 22. In this process, the opening section 221 is a wide-mouth structure to facilitate the entry of the wire 8. After entering the middle section 222 from the opening section 221, it enters the thickened section 223. The inner diameter of the thickened section 223 is designed to be larger than the inner diameter of the middle section 222, so that the wire 8 has thermal expansion space after being heated and will not be blocked, thereby ensuring that the wire 8 is stably and smoothly penetrated in the heat dissipation module 21; after passing through the feed through hole 22, it enters the heating flow channel 32 in the heating block 31, and the heating flow channel 32 is divided into an inlet section 32 1 and heating section 322. To facilitate the entry of the filament 8 into the heating channel 32, the inner diameter of the inlet section 321 corresponds to the thickened section 223 in the heat dissipation module 21. Furthermore, to facilitate contact between the filament 8 and the heating channel 32 and achieve rapid melting, the inner diameter of the heating section 322 is smaller than the inner diameter of the inlet section 321, and the length L of the heating section 322 is greater than the length S of the inlet section 321 (S < 1 / 3L). A threaded hole 323 is machined in the lower portion of the heating block 31 to communicate with the heating channel 32. The melted filament 8 converges at the location of the threaded hole 323 and is ultimately extruded by the discharge nozzle 6 to plastically form the filament 8. The above illustrates and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions merely illustrate the principles of the present invention. Various variations and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such variations and improvements fall within the scope of the claimed invention.

Claims

1. An extrusion structure for plastic molding equipment, characterized in that: It comprises an extrusion component (1), a heat dissipation component (2), a heating component (3), a control component (4), and a nozzle body (5); The extrusion assembly (1) is arranged inside the nozzle body (5), and a control assembly (4) is arranged at the upper rear portion of the nozzle body (5); the heat dissipation assembly (2) is arranged inside the nozzle body (5), directly below the extrusion assembly (1) and tightly plugged with the extrusion assembly (1); the heating assembly (3) is arranged at the lower portion of the heat dissipation assembly (2) and connected to the heat dissipation assembly (2); a discharge nozzle (6) is installed at the bottom of the heating assembly (3), and air-cooling shaping assemblies (7) are arranged on both sides of the discharge nozzle (6), and the air-cooling shaping assemblies (7) are connected to the nozzle body (5) by bolts for cooling and shaping the product during the molding and printing process; The extrusion assembly (1) comprises: a first extrusion fixing member (11), a hinge screw (12), a second extrusion fixing member (14), an extrusion connecting member (13), an auxiliary feeding wheel (15), and an active feeding wheel (16); the first extrusion fixing member (11) is arranged at an upper position inside the nozzle body (5); the active feeding wheel (16) is arranged on the upper part of the heat dissipation assembly (2); the auxiliary feeding wheel (15) is arranged on the opposite side of the active feeding wheel (16); the lower part of the extrusion connecting member (13) is rotatably connected to the auxiliary feeding wheel (15); the upper part of the extrusion connecting member (13) is rotatably connected to the first extrusion fixing member (11) through the hinge screw (12); a feeding motor (17) is installed at the rear of the nozzle body (5); the power output end of the feeding motor (17) is connected to the active feeding wheel (16) and drives the active feeding wheel (16) to rotate and feed; The upper portion of the second extrusion fixing member (14) is connected to the first extrusion fixing member (11) by bolts, and a bearing seat (141) is provided below the second extrusion fixing member (14). A sliding bearing is installed in the bearing seat (141). The power output end of the feeding motor (17) passes through the active feeding wheel (16) and then extends to the sliding bearing and is in sliding contact with the sliding bearing to meet the requirements of stable support for the power output end of the feeding motor (17), thereby ensuring the working stability of the active feeding wheel (16).

2. The extrusion structure for plastic molding equipment according to claim 1, characterized in that: The first extrusion fixing member (11) is provided with a dual-channel feed port (111), which is arranged on the first extrusion fixing member (11) from top to bottom. At the same time, two groups of long strip-shaped through holes (112) are also provided on the first extrusion fixing member (11).

3. The extrusion structure for plastic molding equipment according to claim 2, characterized in that: An adjusting stud (131) is provided in each of the two groups of long strip through holes (112). The bottom of the adjusting stud (131) is connected to the top of the extruded connector (13). An adjusting nut (132) is threadedly mounted on the adjusting stud (131). An adjusting spring (133) is mounted on the adjusting stud (131) on the lower side of the adjusting nut (132). The adjusting spring (133) is located between the adjusting nut (132) and the long strip through hole (112) to ensure that the adjusting stud (131) exerts a stable upward pulling force on the extruded connector (13).

4. The extrusion structure for plastic molding equipment according to claim 1, characterized in that: Two groups of clamping ring grooves (151) are provided on the auxiliary feeding wheel (15), and two groups of clamping tooth grooves (161) are provided on the active feeding wheel (16), wherein the two groups of clamping ring grooves (151) provided on the auxiliary feeding wheel (15) and the two groups of clamping tooth grooves (161) provided on the active feeding wheel (16) are arranged in a corresponding direction. During operation, the wire material (8) for extrusion molding is located between the two groups of clamping ring grooves (151) and the two groups of clamping tooth grooves (161), and enters the heat dissipation component (2) under the rotation action of the two groups of clamping tooth grooves (161).

5. The extrusion structure for plastic molding equipment according to claim 4, characterized in that: In order to facilitate the replacement of different models of the active feeding wheel (16), an assembly hole (162) is opened in the center of the active feeding wheel (16), and a threaded locking hole (163) is opened on the lower side of the active feeding wheel (16) in a direction perpendicular to the assembly hole (162). The threaded locking hole (163) is communicated with the assembly hole (162), and a locking screw is set in the threaded locking hole (163). The active feeding wheel (16) is installed at the power output end position of the feeding motor (17) through the assembly hole (162), and the active feeding wheel (16) and the power output end of the feeding motor (17) are locked by the locking screw.

6. The extrusion structure for plastic molding equipment according to claim 1, characterized in that: The heat dissipation component (2) comprises: a heat dissipation module (21) and a heat dissipation fan. The heat dissipation module (21) is arranged directly above the heating component (3) and is tightly connected to the heating component (3). The heat dissipation fan is fixedly connected to the heat dissipation module (21) and is located above the heating component (3). Two groups of feed holes (22) are processed inside the heat dissipation module (21). The feed holes (22) are divided into an opening section (221), a middle section (222) and a thickened section (223). The opening section (221), the middle section (222) and the thickened section (223) are connected in sequence. The opening section (221) is a wide-mouth structure, which is convenient for the silk material (8) to enter. The inner diameter of the thickened section (223) is larger than the inner diameter of the middle section (222), so that the silk material (8) has thermal expansion space after being heated and will not be blocked.

7. The extrusion structure for plastic molding equipment according to claim 6, characterized in that: The heating assembly (3) is arranged inside the nozzle body (5), located directly below the heat dissipation assembly (2), and is fixedly connected to the heat dissipation assembly (2). The heating assembly (3) includes a heating block (31), and the heating block (31) is fixedly connected between fixed frames symmetrically arranged inside the nozzle body (5).

8. The extrusion structure for plastic molding equipment according to claim 7, characterized in that: Two groups of heating channels (32) are machined inside the heating block (31), and a threaded hole (323) adapted for mounting the discharge nozzle (6) is machined at the bottom of the heating block (31). The two groups of heating channels (32) are connected to the threaded hole (323), and the discharge nozzle (6) is screwed into the threaded hole (323) through a threaded knob. In order to facilitate the wire (8) to enter the heating channel (32) and to perform contact heating on the wire (8) after entering, the heating channel (32) is divided into an inlet section (321) and a heating section (322), and the inner diameter of the inlet section (321) is larger than the inner diameter of the heating section (322).

9. The extrusion structure for plastic molding equipment according to claim 1, characterized in that: The air-cooled shaping component (7) includes a fixed bracket (71), an air cooler (72) and an air guide (73); the fixed bracket (71) is an L-shaped frame structure as a whole, and the fixed bracket (71) is installed on both sides of the lower part of the nozzle body (5) by bolts, and an air cooler (72) is installed on the upper part of the fixed bracket (71), and an air guide (73) is installed on the lower part of the fixed bracket (71). A main air outlet (74) is opened at the lower part of the inner cavity of the air guide (73), and a side air outlet (75) is processed on the side of the inner cavity of the air guide (73). The side air outlet (75) is an oblique diamond structure as a whole, so that the cooling air can be concentrated to the discharge molding area of ​​the discharge nozzle (6) to achieve rapid discharge molding cooling.

10. The method for operating the extrusion structure for plastic molding equipment according to any one of claims 1 to 9, characterized in that: The steps include: S1. The wire (8) enters the double-channel feed port (111) provided on the first extrusion fixing member (11) in the extrusion assembly (1). After entering, the wire (8) is located between the auxiliary feeding wheel (15) and the active feeding wheel (16); one side of the wire (8) contacts the clamping ring groove (151) on the auxiliary feeding wheel (15), and the other side of the wire (8) contacts the clamping ring groove (151) on the active feeding wheel (16); S2. To ensure that the wire (8) has a stable contact friction force between the auxiliary feeding wheel (15) and the active feeding wheel (16), the operator can adjust the rotating adjustment nut (132) to compress the adjustment spring (133). The adjustment spring (133) pushes the adjustment nut (132) upward to achieve a stable upward pulling force of the adjustment stud (131) on the extrusion connector (13). The extrusion connector (13) drives the auxiliary feeding wheel (15) to stably clamp the wire (8) between the auxiliary feeding wheel (15) and the active feeding wheel (16) to prevent the wire (8) from slipping. S3, the wire (8) passes through between the auxiliary feeding wheel (15) and the active feeding wheel (16) and enters the feeding hole (22) in the heat dissipation module (21), and passes through the opening section (221), the middle section (222), and the thickened section (223) in the feeding hole (22) in sequence; S4, after passing through the feed hole (22), the wire enters the heating channel (32) in the heating block (31). The heating channel (32) is further divided into an inlet section (321) and a heating section (322). In order to facilitate the wire (8) to enter the heating channel (32), the inner diameter of the inlet section (321) corresponds to the thickened section (223) in the heat dissipation module (21); S5. In order to facilitate the contact between the wire material (8) and the heating flow channel (32) and thus achieve rapid melting, the inner diameter of the heating section (322) is smaller than the inner diameter of the inlet section (321), and the length L of the heating section (322) is greater than the length S of the inlet section (321) (S<1 / 3L). A threaded hole (323) connected to the heating flow channel (32) is processed at the lower part of the heating block (31). The melted wire material (8) converges at the position of the threaded hole (323) and is finally extruded by the discharge nozzle (6) for plastic molding.

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