Plastic film raw material extrusion device

Abstract

The invention discloses a plastic film raw material extrusion device, comprising a support seat, a stirring and conveying tank body, a feeding hopper, a stirring and conveying mechanism, and a rotating drive mechanism; the invention can adjust the heating time and the feeding speed according to the fluidity of the raw material, and the invention can also assist in adjusting the feeding speed, thus breaking through the single constraint of the motor.

Description

Technical Field

[0001] The invention relates to a plastic film raw material extrusion device. Background Art

[0002] Plastic is a high molecular compound made of monomers through addition polymerization or condensation polymerization, commonly known as plastic or resin, which can freely change its composition and shape. It is composed of synthetic resin and additives such as fillers, plasticizers, stabilizers, lubricants, colorants, etc. The basic properties of plastics are mainly determined by the nature of the resin, but additives also play an important role. However, in existing extrusion devices, it is generally necessary to heat and insulate the inside of the tank so that the raw materials maintain a certain fluidity during transportation. However, the flow insulation temperature required for raw materials of different material components is actually different. In this way, when the raw material fluidity is better and does not require too much heating time, The heating time can be shortened, the conveying speed can be increased, and the extrusion efficiency can be improved. When the fluidity of the raw material is not good and the heating time needs to be increased, the heating time can be extended and the conveying speed of the raw material can be appropriately reduced. In this way, the discharge speed and the heating time of the raw material can be adjusted according to the fluidity of different raw materials. In addition, in order to increase the discharge speed, the existing method generally increases the rotation speed of the motor and then increases the rotation speed of the screw rod to increase the discharge speed, but this additionally increases the energy consumption of the motor, and the discharge speed is restricted by the power of the motor. The present invention realizes that in addition to controlling the motor speed, other methods can be used to assist in controlling the discharge speed. Summary of the invention

[0003] In view of the above-mentioned deficiencies of the prior art, the problem solved by the present invention is to provide a plastic film raw material extrusion device which can adjust the discharge speed and the heating time of the raw materials according to the fluidity of different raw materials and can assist in controlling the discharge speed in addition to motor drive.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] A plastic film raw material extrusion device, comprising a support seat, a stirring and conveying tank body, a hopper, a stirring and conveying mechanism, and a rotating drive mechanism; a support seat is installed on both sides of the lower end of the stirring and conveying tank body; an extrusion head is provided at the outer end of one side of the stirring and conveying tank body; a hopper is installed outside the upper end of the other side of the stirring and conveying tank body; the rotating drive mechanism is installed at the outer end of the other side of the stirring and conveying tank body; the rotating drive mechanism comprises a driving motor, a driving gear, a driving chain, a driven gear, and a driving shaft; the driving motor is installed at the upper end of the other side of the stirring and conveying tank body; a driving gear is installed outside the driving motor; the driven gear is installed at the axis outside the outer end of the other side of the stirring and conveying tank body; the driven gear and the driving gear are linked by the driving chain; the driving shaft is installed at the inner end of the driven gear; the driving shaft is rotatably connected to the end surface of the other side of the stirring and conveying tank body; the outer end of the driving shaft extends to the inside of the stirring and conveying tank body; the stirring and conveying mechanism is installed inside the stirring and conveying tank body; the stirring and conveying mechanism comprises an outer end shaft, a built-in movable shaft, an inner end shaft, a driving screw, a heating pipe, a spiral The outer end shaft is rotatably mounted on one side of the inner part of the stirring and conveying tank; the inner end shaft is rotatably mounted on the other side of the inner part of the stirring and conveying tank; the outer side of the inner end center of the inner end shaft is fixedly connected to the inner end of the driving shaft; a material accumulation gap is provided between the outer end shaft and the inner end shaft; spiral blades are installed on the outer side around the outer end shaft and the inner end shaft; the inner end of the outer end shaft is provided with an outer moving cavity; the outer end of the inner end shaft is provided with an inner moving cavity; heating tubes are installed around the inner side of the built-in moving shaft; the built-in moving shaft includes a large diameter section, a conical section, a small diameter section, and a conical section. diameter section; the large diameter section, the tapered section and the small diameter section are connected end to end in sequence; the large diameter section is slidably engaged in the outer movable cavity of the inner end of the outer end shaft; the small diameter section is slidably engaged in the inner movable cavity of the outer end of the inner end shaft; a driven threaded channel is provided inside the outer end axis of the small diameter section; one end of the driving screw is threadedly rotatably connected to the driven threaded channel of the outer end axis of the small diameter section, and the other end of the driving screw passes through the axis of the inner movable cavity and the axis of the driving shaft in sequence and then extends to the outside of the driven gear; the driving screw is rotatably engaged on the driven gear.

[0006] Furthermore, outer sliding grooves are respectively provided on the upper and lower sides of the outer movable cavity of the inner end of the outer end shaft; outer sliding teeth are respectively provided on the upper and lower sides of the outer end of the large diameter section; the large diameter section is slidably connected to the outer sliding grooves on the upper and lower sides of the outer movable cavity of the outer end shaft through the outer sliding teeth on the upper and lower sides of the outer end.

[0007] Furthermore, inner sliding grooves are respectively provided on the upper and lower sides of the inner movable cavity of the outer end of the inner end shaft; a sliding clamping plate is provided at the inner end of the small diameter section; inner sliding clamping teeth are respectively provided on the upper and lower sides of the sliding clamping plate; the sliding clamping plate is slidably clamped on the inner sliding groove of the inner movable cavity of the outer end of the inner end shaft through the inner sliding clamping teeth on the upper and lower sides.

[0008] Furthermore, a rotating clamping ring groove is provided around the outer end of the outer end shaft; a positioning clamping rod is provided on the upper side of the inner side of the stirring and conveying tank body; the outer end shaft is rotatably clamped to the end of the positioning clamping rod through the rotating clamping ring groove around the outer end.

[0009] Furthermore, a positioning rotation slot is provided inside the axis of the driven gear; a positioning rotation clamp ring is provided on the outer side of the driving screw; the driving screw is rotatably clamped in the positioning rotation slot inside the axis of the driven gear through the positioning rotation clamp ring on the outer side.

[0010] Furthermore, the large diameter section and the small diameter section are both circular cylindrical structures; the outer movable cavity and the inner movable cavity are both circular cavity structures; the diameter of the large diameter section is 2 to 3 times the diameter of the small diameter section.

[0011] Furthermore, the feeding hopper has a conical structure that is larger at the top and smaller at the bottom.

[0012] Beneficial Effects of the Invention

[0013] The present invention drives the screw rod to rotate in situ on the driven gear, and utilizes the driven threaded channel inside the shaft center of the outer end of the small-diameter section to drive the entire built-in movable shaft to move. Specifically, the large-diameter section of the built-in movable shaft slides in the outer movable cavity of the inner end of the outer end shaft, and the small-diameter section of the movable shaft slides in the inner movable cavity of the outer end of the inner end shaft, so that the positions of the large-diameter section, the conical section, and the small-diameter section are changed at the material accumulation gap between the outer end shaft and the inner end shaft. When the small-diameter section is located at the material accumulation gap between the outer end shaft and the inner end shaft, the annular space on the outside of the material accumulation gap is the largest, so that the time for raw materials to accumulate on the outside of the small-diameter section is the longest, so that the raw materials are accumulated at the small-diameter section. The heating time is prolonged on the outside of the section and the discharge speed of the raw material becomes slower; as the small-diameter section, the conical section and the large-diameter section move toward the inner end shaft in sequence, the annular space on the outside of the accumulation gap between the outer end shaft and the inner end shaft becomes smaller and smaller, so that the accumulation time of the raw material in the accumulation gap gradually becomes shorter, thus gradually reducing the heating time of the raw material and increasing the feeding speed of the raw material. When the large-diameter section is completely located at the accumulation gap, the annular space around the accumulation gap is the smallest, so that the heating time of the raw material is the smallest and the feeding speed of the raw material is the fastest. The present invention can adjust the heating time and feeding speed according to the fluidity of the raw material. In addition, the present invention can assist in adjusting the feeding speed, breaking through the single constraint of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the structure of the built-in movable shaft of the present invention.

[0016] Figure 3 It is a schematic diagram of the partially enlarged structure of one side of the outer end shaft of the present invention.

[0017] Figure 4 It is a schematic diagram of the partially enlarged structure of one side of the inner end shaft of the present invention. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] like Figures 1 to 4As shown, a plastic film raw material extrusion device includes a support seat 1, a stirring and conveying tank body 2, a hopper 5, a stirring and conveying mechanism 3, and a rotating drive mechanism 4; a support seat 1 is installed on both sides of the lower end of the stirring and conveying tank body 2; an extrusion head 21 is provided at the outer end of one side of the stirring and conveying tank body 2; a hopper 5 is installed outside the upper end of the other side of the stirring and conveying tank body 2; the rotating drive mechanism 4 is installed at the outer end of the other side of the stirring and conveying tank body 2; the rotating drive mechanism 4 includes a driving motor 41, a driving gear 42, a driving chain 43, a driven gear 44, and a driving shaft 45; the driving motor 41 is installed at the upper end of the other side of the stirring and conveying tank body 2; the driving motor A driving gear 42 is installed on the outer side of 41; the driven gear 44 is installed at the axis center of the outer side of the other side of the stirring and conveying tank body 2; the driven gear 44 and the driving gear 42 are linked by a driving chain 43; a driving shaft 45 is installed on the inner end of the driven gear 44; the driving shaft 45 is rotatably engaged with the end surface of the other side of the stirring and conveying tank body 2; the outer end of the driving shaft 45 extends to the inside of the stirring and conveying tank body 2; the stirring and conveying mechanism 3 is installed inside the stirring and conveying tank body 2; the stirring and conveying mechanism 3 includes an outer end shaft 31, a built-in moving shaft 33, an inner end shaft 32, a driving screw 34, a heating tube 36, and a spiral blade 35; the outer end shaft 31 is rotatably engaged with Installed on one side of the interior of the stirring and conveying tank body 2; the inner end shaft 32 is rotatably installed on the other side of the interior of the stirring and conveying tank body 2; the outer side of the inner end center of the inner end shaft 32 is fixedly connected to the inner end of the driving shaft 45; a material accumulation gap 38 is provided between the outer end shaft 31 and the inner end shaft 32; spiral blades 35 are installed on the outer sides of the outer end shaft 31 and the inner end shaft 32; the inner end of the outer end shaft 31 is provided with an outer moving cavity 313; the outer end of the inner end shaft 32 is provided with an inner moving cavity 322; heating tubes 36 are installed around the inside of the built-in moving shaft 33; the built-in moving shaft 33 includes a large diameter section 331, a conical section 332, and a small diameter section 333; the large diameter section 331, the conical section 332, and the small diameter section 333 are connected end to end in sequence; the large diameter section 331 is slidably engaged in the outer movable cavity 313 at the inner end of the outer end shaft 31; the small diameter section 333 is slidably engaged in the inner movable cavity 322 at the outer end of the inner end shaft 32; a driven threaded channel 337 is provided inside the outer end axis of the small diameter section 333; one end of the driving screw 34 is threadedly rotatably connected in the driven threaded channel 337 at the outer end axis of the small diameter section 333, and the other end of the driving screw 34 passes through the axis of the inner movable cavity 332 and the axis of the driving shaft 45 in sequence and then extends to the outside of the driven gear 44; the driving screw 34 is rotatably engaged on the driven gear 44.

[0020] like Figures 1 to 4As shown, further, the upper and lower sides of the outer moving cavity of the inner end of the outer end shaft 31 are respectively provided with outer sliding grooves 311; the upper and lower sides of the outer end of the large diameter section 331 are respectively provided with outer sliding teeth 334; the large diameter section 331 is slidably engaged with the outer sliding grooves 311 on the upper and lower sides of the outer moving cavity 313 of the outer end shaft 31 through the outer sliding teeth 334 on the upper and lower sides of the outer end. Further preferably, the upper and lower sides of the inner moving cavity 322 of the outer end of the inner end shaft 32 are respectively provided with inner sliding grooves 321; the inner end of the small diameter section 333 is provided with a sliding engaging plate 37; the upper and lower sides of the sliding engaging plate 37 are respectively provided with inner sliding teeth 371; the sliding engaging plate 37 is slidably engaged with the inner sliding groove 321 of the inner moving cavity 322 of the outer end of the inner end shaft 32 through the inner sliding teeth 371 on the upper and lower sides. Further, a rotation clamping ring groove 312 is provided around the outer end of the outer end shaft 31; a positioning clamping rod 22 is provided on the upper side of the inner side of the stirring and conveying tank body 2; the outer end shaft 31 is rotationally clamped to the end of the positioning clamping rod 22 through the rotation clamping ring groove 312 around the outer end. Further preferably, a positioning rotation clamping groove 441 is provided inside the axis of the driven gear 44; a positioning rotation clamping ring 341 is provided around the outer side of the driving screw 34; the driving screw 34 is rotationally clamped in the positioning rotation clamping groove 441 inside the axis of the driven gear 44 through the positioning rotation clamping ring 341 around the outer side. Further, the large diameter section 331 and the small diameter section 333 are both circular cylindrical structures; the outer moving cavity 313 and the inner moving cavity 322 are both circular cavity structures; the diameter of the large diameter section 331 is 2 to 3 times the diameter of the small diameter section 333. Further, the feed hopper 5 is a conical structure with a large top and a small bottom.

[0021] The present invention drives the screw rod 34 to rotate in situ on the driven gear 44, and utilizes the driven threaded channel 337 inside the axis of the outer end of the small diameter section 333, thereby driving the entire built-in movable shaft 33 to move, specifically, the large diameter section 331 of the built-in movable shaft 33 slides in the outer movable cavity 313 of the inner end of the outer end shaft 31, and the small diameter section 333 of the built-in movable shaft 33 slides in the inner movable cavity 322 of the outer end of the inner end shaft 32, so that the positions of the large diameter section 331, the conical section 332, and the small diameter section 333 are changed at the material accumulation gap 38 between the outer end shaft 31 and the inner end shaft 32. When the small diameter section 333 is located at the material accumulation gap 38 between the outer end shaft 31 and the inner end shaft 32, the annular space outside the material accumulation gap 38 is the largest, and the raw material is The side material accumulation time is the longest, so that the raw material is heated for a longer time on the outside around the small diameter section and the discharge speed of the raw material becomes slower; as the small diameter section 333, the conical section 332, and the large diameter section 331 move toward the inner end shaft 32 in sequence, the annular space around the outside of the accumulation gap 38 between the outer end shaft 31 and the inner end shaft 32 becomes smaller and smaller, so that the accumulation time of the raw material in the accumulation gap gradually becomes shorter, thus gradually reducing the heating time of the raw material and increasing the raw material feeding speed. When the large diameter section 331 is completely located at the accumulation gap 38, the annular space around the accumulation gap 38 is the smallest, so that the heating time of the raw material is the smallest and the raw material feeding speed is the fastest. In this way, the present invention can adjust the heating time and feeding speed according to the fluidity of the raw material. In addition, the present invention can assist in adjusting the feeding speed, breaking through the single constraint of the motor.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A plastic film raw material extrusion device, characterized in that: It includes a support seat, a stirring and conveying tank body, a hopper, a stirring and conveying mechanism, and a rotating drive mechanism; a support seat is installed on both sides of the lower end of the stirring and conveying tank body; an extrusion head is provided at the outer end of one side of the stirring and conveying tank body; a hopper is installed on the outside of the upper end of the other side of the stirring and conveying tank body; the rotating drive mechanism is installed at the outer end of the other side of the stirring and conveying tank body; the rotating drive mechanism includes a driving motor, a driving gear, a driving chain, a driven gear, and a driving shaft; the driving motor is installed at the upper end of the other side of the stirring and conveying tank body; a driving gear is installed on the outside of the driving motor; the driven gear is installed at the axis outside the outer end of the other side of the stirring and conveying tank body; the driven gear and the driving gear are linked by a driving chain; The inner end of the driven gear is installed with a driving shaft; the driving shaft is rotatably engaged with the end surface of the other side of the stirring and conveying tank body; the outer end of the driving shaft extends into the interior of the stirring and conveying tank body; the stirring and conveying mechanism is installed inside the stirring and conveying tank body; the stirring and conveying mechanism comprises an outer end shaft, a built-in movable shaft, an inner end shaft, a driving screw, a heating tube, and a spiral blade; the outer end shaft is rotatably engaged with and installed on one side of the interior of the stirring and conveying tank body; the inner end shaft is rotatably installed on the other side of the interior of the stirring and conveying tank body; the outer side of the inner end center of the inner end shaft is fixedly connected to the inner end of the driving shaft; a material accumulation gap is provided between the outer end shaft and the inner end shaft; spiral blades are installed on the outside around the outer end shaft and the inner end shaft; the inner end of the outer end shaft is provided with an outer Side moving cavity; the outer end of the inner end shaft is provided with an inner moving cavity; heating tubes are installed around the interior of the built-in moving shaft; the built-in moving shaft includes a large diameter section, a tapered section, and a small diameter section; the large diameter section, the tapered section, and the small diameter section are connected end to end in sequence; the large diameter section is slidably engaged in the outer moving cavity at the inner end of the outer end shaft; the small diameter section is slidably engaged in the inner moving cavity at the outer end of the inner end shaft; a driven threaded channel is provided inside the outer end axis of the small diameter section; one end of the driving screw is threadedly rotatably connected to the driven threaded channel of the outer end axis of the small diameter section, and the other end of the driving screw passes through the axis of the inner moving cavity and the axis of the driving shaft in sequence and then extends to the outside of the driven gear; the driving screw is rotatably engaged in the driven gear The outer end of the outer shaft is provided with a rotating clamping ring groove around it; a positioning clamping rod is provided on the upper side of the inner side of the stirring and conveying tank body; the outer shaft is rotatably clamped to the end of the positioning clamping rod through the rotating clamping ring grooves around the outer end; a positioning rotating clamping groove is provided inside the axis of the driven gear; a positioning rotating clamping ring is provided around the outer side of the driving screw; the driving screw is rotatably clamped to the positioning rotating clamping groove inside the axis of the driven gear through the positioning rotating clamping rings around the outer side; the large diameter section and the small diameter section are both circular cylindrical structures; the outer moving cavity and the inner moving cavity are both circular cavity structures; the diameter of the large diameter section is 2 to 3 times the diameter of the small diameter section; the inner end of the small diameter section is provided with a sliding clamping plate.

2. The plastic film raw material extrusion device according to claim 1, characterized in that: The outer movable cavity of the inner end of the outer end shaft is provided with outer sliding grooves on the upper and lower sides respectively; the outer end of the large diameter section is provided with outer sliding teeth on the upper and lower sides respectively; the large diameter section is slidably connected to the outer sliding grooves on the upper and lower sides of the outer movable cavity of the outer end shaft through the outer sliding teeth on the upper and lower sides of the outer end.

3. The plastic film raw material extrusion device according to claim 1, characterized in that: The inner moving cavity of the outer end of the inner end shaft is provided with inner sliding grooves on the upper and lower sides respectively; the inner end of the small diameter section is provided with a sliding connecting plate; the upper and lower sides of the sliding connecting plate are provided with inner sliding teeth on the upper and lower sides respectively; the sliding connecting plate is slidably connected to the inner sliding groove of the inner moving cavity of the outer end of the inner end shaft through the inner sliding teeth on the upper and lower sides.

4. The plastic film raw material extrusion device according to claim 1, characterized in that: The feeding hopper is in a conical structure with a larger upper portion and a smaller lower portion.

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