Extrusion molding machine

Abstract

The utility model discloses an extrusion molding machine, which belongs to the technical field of plastic glue stick production and comprises a frame. The feeding mechanism is arranged on the rack, and the feeding mechanism is used for providing plastic raw materials; the melting mechanism is arranged on the rack, the input end of the melting mechanism communicates with the output end of the feeding mechanism, the melting mechanism comprises a plurality of gun barrels, and the gun barrels are used for melting plastic raw materials to form plastic melt; the extrusion mechanism is arranged on the rack, and the extrusion mechanism is used for producing two continuous plastic extrusion strips; and the driving mechanism is arranged on the rack, the driving mechanism is in transmission connection with the feeding mechanism, the melting mechanism and the extruding mechanism, and the driving mechanism is used for providing power. The equipment can provide gradually-increased temperature buffer for plastic raw materials, so that the temperature of molten plastic is controlled and adjusted step by step, the melting, mixing and extruding requirements of the plastic are met, and the extruding effect and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic glue stick production, in particular to an extrusion molding machine. Background Art

[0002] Plastic glue stick is a long strip product made of plastic material, usually produced by extrusion or injection molding. Its flexibility, plasticity and processability make it a convenient and practical material, so it is widely used in handicrafts, model making, repair, electronics, seal making and other fields.

[0003] In the prior art, the plastic melt usually enters the extruder or mold directly without gradually increasing the temperature buffer, which may cause local overheating or uneven melting of the plastic, and easily cause the plastic glue stick to crack, deform or even break in subsequent production, thereby affecting the quality of the plastic glue stick. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an extrusion molding machine that can provide a gradually increasing temperature buffer for the plastic raw material so that the plastic raw material is heated to form a uniform plastic melt, thereby improving the quality of the extruded parts.

[0005] The extrusion molding machine according to the embodiment of the utility model includes a frame; a feeding mechanism, which is arranged on the frame and is used to provide plastic raw materials; a melting mechanism, which is arranged on the frame, and the input end of the melting mechanism is connected with the output end of the feeding mechanism, the melting mechanism includes a plurality of barrels, and the plurality of barrels are connected in sequence along a straight line, and all the barrels can independently adjust the temperature, and the barrels are used to melt the plastic raw materials; an extrusion mechanism, the input end of the extrusion mechanism is connected with the output end of the melting mechanism, the extrusion mechanism is arranged on the frame, and the extrusion mechanism is used to produce two continuous plastic extrusion strips; a driving mechanism, which is arranged on the frame, and is transmission-connected with the feeding mechanism, the melting mechanism and the extrusion mechanism, and is used to provide power.

[0006] The extrusion molding machine according to the embodiment of the utility model has at least the following beneficial effects: the feeding mechanism continuously supplies plastic raw materials to the melting mechanism, the plastic raw materials enter the melting mechanism, and pass through a plurality of barrels in a straight line in sequence. Since each barrel can independently adjust the temperature, the plastic melt can reach an appropriate melting state by gradually increasing the temperature to meet the requirements of melting, mixing and extrusion of the plastic. Finally, two continuous plastic extrusion strips are extruded through the extrusion mechanism, thereby realizing gradual control and adjustment of the temperature of the molten plastic to meet the requirements of melting, mixing and extrusion of the plastic, so as to obtain the best extrusion effect and product quality.

[0007] According to some embodiments of the utility model, the melting mechanism includes: a screw, which is rotatably arranged in a plurality of barrels, the screw extends along the axial direction of the barrel, and the screw is used to transport the plastic melt in the barrel; a control component, the control component is arranged on a frame, and the control component is used to adjust the temperature of the plurality of barrels respectively, and control the rotation speed of the screw.

[0008] According to some embodiments of the present invention, the melting mechanism further includes a high-speed fan, the number of which corresponds to the number of barrels, and a high-speed fan is correspondingly arranged under each barrel.

[0009] According to some embodiments of the utility model, the extrusion mechanism includes: a diverter assembly, which is arranged on a frame, the input end of the diverter assembly is connected to the output ends of a plurality of barrels, and the diverter assembly is used to control the flow direction of the plastic melt; an extrusion head assembly, which is arranged on the diverter assembly, and the extrusion head assembly is used to control the flow rate of the plastic melt.

[0010] According to some embodiments of the utility model, the diversion assembly includes: a fixed box, which is arranged on a frame, the fixed box is provided with a feed port and a material cavity, the feed port is connected with the output ends of several barrels; a transition box, the transition box is arranged on a side of the fixed box away from the barrel, the transition box is provided with a transition cavity, the transition cavity is connected with the material cavity; a diversion box, the diversion box is arranged on a side of the transition box away from the fixed box, the diversion box is provided with a diversion cavity, and the diversion cavity is provided with two discharge ports.

[0011] According to some embodiments of the utility model, the extrusion head assembly includes two extrusion nozzles, which are arranged on the opposite side of the diversion box and the transition box. The extrusion nozzle is provided with an inner cavity, and the inner cavity is provided with an extrusion port. Each inner cavity is connected to the diversion cavity through a corresponding discharge port.

[0012] According to some embodiments of the utility model, the feeding mechanism includes: a hopper, which is arranged on a frame, and the output end of the hopper is connected to the input end of the melting mechanism; a storage barrel, which is connected to the hopper and is used to store plastic raw materials; a vacuum pump, which is connected to the hopper and sucks the plastic raw materials in the storage barrel into the hopper.

[0013] According to some embodiments of the utility model, the feeding mechanism further includes a buffer barrel, which is disposed on the hopper and is connected to the hopper, and the storage barrel and the vacuum pump are connected to the hopper through the buffer barrel.

[0014] According to some embodiments of the present utility model, four gun barrels are provided, and the four gun barrels are connected in sequence along a straight line.

[0015] According to some embodiments of the present invention, the driving mechanism is a motor.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0018] Figure 1 It is a structural schematic diagram of an extrusion molding machine according to an embodiment of the utility model;

[0019] Figure 2 for Figure 1 Structural schematic diagram of the extrusion mechanism;

[0020] Figure 3 for Figure 1 The structural diagram of the middle melting mechanism;

[0021] Figure 4 for Figure 1 Schematic diagram of the structure of the feeding mechanism.

[0022] Reference numerals:

[0023] Rack 100;

[0024] Feeding mechanism 200, hopper 210, storage barrel 220, vacuum pump 230, buffer barrel 240;

[0025] Melting mechanism 300, barrel 310, control assembly 320, high-speed fan 330;

[0026] Extrusion mechanism 400, diverter assembly 410, fixed box 411, transition box 412, diverter box 413, extrusion head assembly 420, extrusion nozzle 421, extrusion port 421a;

[0027] Plastic extruded strip 10. DETAILED DESCRIPTION

[0028] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a first or second description, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] refer to Figures 1 to 4 An extrusion molding machine according to an embodiment of the present invention is described.

[0033] like Figures 1 to 4 As shown, the extrusion molding machine includes a frame 100; a feeding mechanism 200, which is arranged on the frame 100 and is used to provide plastic raw materials; a melting mechanism 300, which is arranged on the frame 100, and the input end of the melting mechanism 300 is connected to the output end of the feeding mechanism 200, and the melting mechanism 300 includes a plurality of barrels 310, all of which can independently adjust the temperature, and the plurality of barrels 310 are connected in sequence along a straight line, and the barrels 310 are used to melt the plastic raw materials; an extrusion mechanism 400, the input end of the extrusion mechanism 400 is connected to the output end of the melting mechanism 300, the extrusion mechanism 400 is arranged on the frame 100, and the extrusion mechanism 400 is used to produce two continuous plastic extrusion strips 10; a driving mechanism, which is arranged on the frame 100, and is transmission-connected to the feeding mechanism 200, the melting mechanism 300 and the extrusion mechanism 400, and is used to provide power.

[0034] like Figure 1As shown, the extrusion molding machine includes a frame 100, and a feeding mechanism 200, a melting mechanism 300, an extrusion mechanism 400 and a driving mechanism arranged on the frame 100. The feeding mechanism 200, the melting mechanism 300 and the extrusion mechanism 400 are arranged in sequence, and the output end of the feeding mechanism 200 is connected to the input end of the melting mechanism 300, and the output end of the melting mechanism 300 is connected to the input end of the extrusion mechanism 400. Among them, the melting mechanism 300 includes a plurality of barrels 310, and the plurality of barrels 310 extend in the front-to-back direction and are connected in sequence, and the barrel 310 located in the last section is the output end of the melting mechanism 300. Thus, the feeding mechanism 200 continuously supplies plastic raw materials to the melting mechanism 300, and the plastic raw materials enter the melting mechanism 300 and pass through a plurality of barrels 310 in a straight line. Since each barrel 310 can independently adjust the temperature, the plastic melt can reach an appropriate melting state by gradually increasing the temperature to meet the requirements of melting, mixing and extrusion of the plastic. Finally, two continuous plastic extrusion strips 10 are extruded through the extrusion mechanism 400, thereby realizing the gradual control and adjustment of the temperature of the molten plastic to meet the requirements of melting, mixing and extrusion of the plastic, so as to obtain the best extrusion effect and product quality.

[0035] It should be noted that during the plastic extrusion process, the plastic melt needs to reach a proper melting state through gradually increasing temperature. The barrel 310 set at the front is usually used to preheat the plastic raw material to a temperature at which it starts to melt. The next two barrels 310 are used to further heat the plastic and melt it completely. These two barrels 310 are usually set to a higher temperature to ensure that the plastic is completely melted and fully mixed during the process to ensure the uniformity and quality of the plastic. The last barrel 310 is located before the extrusion mechanism 400 and is used to control the extrusion temperature to meet the requirements of different plastic types and products, and accurately control the temperature that matches it to ensure that the plastic maintains proper fluidity and extrudability in the extrusion mechanism 400.

[0036] Specifically, in this specific embodiment, four gun barrels 310 are provided, and the four gun barrels 310 are sequentially connected along a straight line in the front-to-back direction.

[0037] In some specific embodiments of the present invention, the melting mechanism 300 includes: a screw, which is rotatably arranged in a plurality of barrels 310, and the screw extends along the axial direction of the barrel 310, and the screw is used to transport the plastic melt in the barrel 310; a control component 320, and the control component 320 is arranged on the frame 100, and the control component 320 is used to adjust the temperature of the plurality of barrels 310 respectively, and control the rotation speed of the screw.

[0038] like Figure 2As shown, the melting mechanism 300 includes a screw and a control assembly 320. The screw is rotatably connected to the barrel 310 and penetrates the four barrels 310 along the axis of the barrel 310 in the front-to-back direction. Specifically, the control assembly 320 adjusts the diameter of the plastic glue stick by controlling the rotation speed of the screw. When the screw rotates faster, the plastic melt inside the barrel 310 flows faster, and the amount delivered to the extrusion mechanism 400 is large. At this time, the cross-sectional size of the extruded plastic melt is larger; when the screw rotates slower, the plastic melt inside the barrel 310 flows slower, and the amount delivered to the extrusion mechanism 400 is small. At this time, the size of the extruded plastic melt is smaller.

[0039] In some specific embodiments of the present invention, the melting mechanism 300 further includes a high-speed fan 330. The number of the high-speed fans 330 corresponds to the number of the barrels 310. A high-speed fan 330 is correspondingly disposed under each barrel 310. Figure 2 As shown, a high-speed fan 330 is correspondingly arranged under each of the four barrels 310. The high-speed fan 330 can generate a strong airflow to blow the surrounding air through the barrel 310, thereby quickly reducing the temperature of the barrel 310 and improving the temperature control efficiency of the melting mechanism 300.

[0040] In some specific embodiments of the present invention, the extrusion mechanism 400 includes: a diverter assembly 410, which is arranged on the frame 100, the input end of the diverter assembly 410 is connected to the output ends of a plurality of barrels 310, and the diverter assembly 410 is used to control the flow direction of the plastic melt; an extrusion head assembly 420, which is arranged on the diverter assembly 410, and the extrusion head assembly 420 is used to control the flow of the plastic melt.

[0041] In some specific embodiments of the utility model, the diversion component 410 includes: a fixed box 411, which is arranged on the frame 100, and the fixed box 411 is provided with a feed port and a material cavity, and the feed port is connected to the output end of a plurality of barrels 310; a transition box 412, which is arranged on the side of the fixed box 411 away from the barrel 310, and the transition box 412 is provided with a transition cavity, and the transition cavity is connected to the material cavity; a diversion box 413, which is arranged on the side of the transition box 412 away from the fixed box 411, and the diversion box 413 is provided with a diversion cavity, and the diversion cavity is provided with two discharge ports.

[0042] In some specific embodiments of the present invention, the extrusion head assembly 420 includes two extrusion nozzles 421, which are arranged on the opposite side of the diversion box 413 and the transition box 412. The extrusion nozzle 421 is provided with an inner cavity, and the inner cavity is provided with an extrusion port 421a. Each inner cavity is connected to the diversion cavity through a corresponding discharge port.

[0043] like Figure 3As shown, the extrusion mechanism 400 includes a diverter assembly 410 and an extrusion head assembly 420. The diverter assembly 410 is connected to the barrel 310 located at the rear, and the extrusion head assembly 420 is arranged on the diverter assembly 410. The barrel 310, the diverter assembly 410 and the extrusion head assembly 420 are interconnected. The plastic melt enters the diverter assembly 410 from the barrel 310. The diverter assembly 410 controls the flow direction of the plastic melt so that it flows into the extrusion head assembly 420 and is finally extruded by the extrusion head assembly 420. Among them, the diverter assembly 410 includes a fixed box 411, a transition box 412 and a diverter box 413 arranged in sequence along the front-to-back direction. A material cavity is arranged in the fixed box 411, a transition cavity is arranged in the transition box 412, and a diverter cavity is arranged in the diverter box 413. The material cavity, the transition cavity and the diverter cavity are interconnected, and the diverter cavity is provided with two discharge ports, and the two discharge ports are arranged side by side on the rear side of the diverter box 413. The extrusion head assembly 420 includes two extrusion nozzles 421, each of which is connected to a corresponding discharge port. The extrusion nozzle 421 is provided with an inner cavity extending in the front-to-back direction, and the inner cavity is connected to the diversion cavity through the discharge port. The rear end of the inner cavity is provided with an extrusion port 421a. The plastic melt will pass through the material cavity in the fixed box 411 and the transition cavity in the transition box 412 from front to back, and will be divided into two flow channels in the diversion cavity of the diversion box 413, and will flow to the inner cavity corresponding to the discharge port through the two discharge ports respectively, and finally be continuously extruded from the extrusion port 421a to form two continuous plastic extrusion strips 10.

[0044] In some specific embodiments of the present invention, the feeding mechanism 200 includes: a hopper 210, which is arranged on the frame 100, and the output end of the hopper 210 is connected to the input end of the melting mechanism 300; a storage barrel 220, which is connected to the hopper 210, and the storage barrel 220 is used to store plastic raw materials; a vacuum pump 230, which is connected to the hopper 210, and the vacuum pump 230 sucks the plastic raw materials in the storage barrel 220 into the hopper 210.

[0045] like Figure 4 As shown, the feeding mechanism includes a hopper 210, a storage barrel 220 and a vacuum pump 230, wherein the storage barrel 220 and the vacuum pump 230 are respectively connected to the hopper 210, and the vacuum pump 230 uses a negative pressure environment to allow the plastic raw material in the storage barrel 220 to directly enter the hopper 210, and the flow rate of the plastic raw material is controlled by adjusting the hopper 210, thereby preventing the plastic raw material from being contaminated by pollutants, dust and impurities in the atmosphere, thereby ensuring the quality and purity of the material, and realizing automated and continuous material transportation, avoiding the tediousness and instability of manual operation, and improving production efficiency. Specifically, the plastic raw material in the storage barrel is PP.

[0046] In some specific embodiments of the present invention, the feeding mechanism 200 further includes a buffer barrel 240, which is disposed on the hopper 210, the buffer barrel 240 is connected to the hopper 210, the vacuum pump 230 is connected to the hopper 210, and the storage barrel 220 and the vacuum pump 230 are connected to the hopper 210 through the buffer barrel 240. Figure 4 As shown, the buffer barrel 240 is disposed at the upper end of the hopper 210, providing a smooth transition area, so that the plastic raw material can flow smoothly to the hopper 210, reducing the occurrence of blockage and poor flow of the plastic raw material. Of course, by setting an appropriate slope and shape for the buffer barrel 240, the flow speed and direction of the plastic particles in the barrel can also be controlled, so that they enter the hopper 210 more evenly.

[0047] In some specific embodiments of the present invention, the driving mechanism is a motor.

[0048] In some specific embodiments of the present invention, the vacuum pump 230 utilizes a negative pressure environment to allow the plastic raw material in the storage barrel 220 to directly enter the hopper 210, and continuously supplies the plastic raw material to the barrel 310. The plastic raw material enters the barrel 310, and the plastic melt passes through the four sections of the barrel 310 in a straight line under the action of the screw. Since each barrel 310 can independently adjust the temperature, the plastic melt can reach an appropriate melting state by gradually increasing the temperature, and then enters the fixed box 411, and passes through the material cavity in the fixed box 411 and the transition cavity in the transition box 412 from front to back, and is diverted to two flow channels in the diversion cavity of the diversion box 413, and flows to the inner cavity of the extrusion nozzle 421 corresponding to the discharge port through the two discharge ports, and finally is continuously extruded from the extrusion port 421a to form two continuous plastic extrusion strips 10.

[0049] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An extrusion molding machine, characterized in that: include: Rack(100); A feeding mechanism (200), the feeding mechanism (200) being arranged on the frame (100), and the feeding mechanism (200) being used to provide plastic raw materials; A melting mechanism (300), wherein the melting mechanism (300) is arranged on the frame (100), wherein an input end of the melting mechanism (300) is connected to an output end of the feeding mechanism (200), wherein the melting mechanism (300) comprises a plurality of barrels (310), wherein the plurality of barrels (310) are sequentially connected in a straight line direction, and wherein the temperature of all the barrels (310) can be independently adjusted, and wherein the barrels (310) are used to melt plastic raw materials; An extrusion mechanism (400), the input end of the extrusion mechanism (400) being connected to the output end of the melting mechanism (300), the extrusion mechanism (400) being arranged on the frame (100), and the extrusion mechanism (400) being used to produce two continuous plastic extrusion strips (10); A driving mechanism, wherein the driving mechanism is arranged on the frame (100), the driving mechanism is drivingly connected to the feeding mechanism (200), the melting mechanism (300) and the extruding mechanism (400), and the driving mechanism is used to provide power.

2. The extrusion molding machine according to claim 1, characterized in that: The melting mechanism (300) comprises: A screw, the screw being rotatably disposed in the plurality of barrels (310), the screw extending along the axial direction of the barrels (310), and being used to convey the plastic melt in the barrels (310); A control component (320) is arranged on the frame (100), and the control component (320) is used to adjust the temperature of the plurality of barrels (310) respectively and control the rotation speed of the screw.

3. The extrusion molding machine according to claim 1, characterized in that: The melting mechanism (300) further comprises a high-speed fan (330), the number of which corresponds to the number of the barrels (310), and one high-speed fan (330) is correspondingly arranged below each barrel (310).

4. The extrusion molding machine according to claim 1, characterized in that: The extrusion mechanism (400) comprises: A flow dividing component (410), the flow dividing component (410) being arranged on the frame (100), the input end of the flow dividing component (410) being in communication with the output ends of the plurality of barrels (310), and the flow dividing component (410) being used to control the flow direction of the plastic melt; An extrusion head assembly (420), wherein the extrusion head assembly (420) is arranged on the diversion assembly (410), and the extrusion head assembly (420) is used to control the flow rate of the plastic melt.

5. The extrusion molding machine according to claim 4, characterized in that: The flow dividing component (410) comprises: A fixed box (411), the fixed box (411) being arranged on the frame (100), the fixed box (411) being provided with a feed port and a feed cavity, the feed port being in communication with output ends of the plurality of barrels (310); A transition box (412), the transition box (412) being arranged on a side of the fixed box (411) away from the barrel (310), the transition box (412) being provided with a transition cavity, the transition cavity being in communication with the material cavity; The diverter box (413) is arranged on a side of the transition box (412) away from the fixed box (411), and the diverter box (413) is provided with a diverter cavity, and the diverter cavity is provided with two discharge ports.

6. The extrusion molding machine according to claim 5, characterized in that: The extrusion head assembly (420) includes two extrusion nozzles (421), and the extrusion nozzles (421) are arranged on the side opposite to the diversion box (413) and the transition box (412). The extrusion nozzles (421) are provided with an inner cavity, and the inner cavity is provided with an extrusion port (421a). Each of the inner cavities is connected to the diversion cavity through the corresponding discharge port.

7. The extrusion molding machine according to claim 1, characterized in that: The feeding mechanism (200) comprises: A hopper (210), wherein the hopper (210) is arranged on the frame (100), and an output end of the hopper (210) is connected to an input end of the melting mechanism (300); A material storage barrel (220), the material storage barrel (220) being in communication with the hopper (210), and the material storage barrel (220) being used to store plastic raw materials; A vacuum pump (230), wherein the vacuum pump (230) is connected to the hopper (210), and the vacuum pump (230) sucks the plastic raw material in the storage barrel (220) into the hopper (210).

8. The extrusion molding machine according to claim 7, characterized in that: The feeding mechanism (200) further comprises a buffer barrel (240), wherein the buffer barrel (240) is arranged on the hopper (210), the buffer barrel (240) is connected to the hopper (210), and the material storage barrel (220) and the vacuum pump (230) are connected to the hopper (210) via the buffer barrel (240).

9. The extrusion molding machine according to claim 1, characterized in that: Four of the gun barrels (310) are provided, and the four gun barrels (310) are connected in sequence along a straight line.

10. The extrusion molding machine according to claim 1, characterized in that: The driving mechanism is a motor.

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