CN210940373U

CN210940373U - Co-rotating double-screw extrusion device for producing thermoplastic elastomer material

Info

Publication number: CN210940373U
Application number: CN201921958356.0U
Authority: CN
Inventors: 王宇; 楚志华
Original assignee: Dongguan Shanpu Technology Co ltd
Current assignee: Dongguan Shanpu Technology Co ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-07-07
Anticipated expiration: 2029-11-13

Abstract

The utility model relates to a production of thermoplastic elastomer material is with syntropy twin-screw extrusion device relates to the technical field of thermoplastic elastomer material production, and it includes that barrel, solid add mechanism, liquid add mechanism and screw extrusion mechanism. The powder raw material enters the machine barrel from the solid adding port through the solid adding mechanism, the screw extrusion mechanism heats the powder to enable the powder to be in a liquid state and is conveyed forwards, after the powder is conveyed for a certain distance, the liquid raw material enters the machine barrel from the liquid adding port through the liquid adding mechanism, and the liquid raw material is conveyed along with the powder raw material which is in the liquid state under the action of the screw extrusion mechanism and is uniformly mixed with the powder raw material in the liquid state; the liquid sending pipe sets up in the support with the direction along the support to liquid add the mouth and extend, avoids the liquid sending pipe to place at will and the extrusion of buckling that leads to easily, from this, has guaranteed that liquid feedstock's transport is stable, thereby improves the utility model discloses the thermoplastic elastomer quality of producing.

Description

Co-rotating double-screw extrusion device for producing thermoplastic elastomer material

Technical Field

The utility model belongs to the technical field of the technique of thermoplastic elastomer material production and specifically relates to a production of thermoplastic elastomer material is with syntropy twin-screw extrusion device is related to.

Background

Thermoplastic elastomers, abbreviated as TPE or TPR, are abbreviations for Thermoplastic rubbers. The thermoplastic elastomer has the elasticity of rubber at normal temperature and has the characteristic of plastic molding at high temperature. The thermoplastic elastomer has the structural characteristics that different resin segments and rubber segments are formed by chemical bonds, the resin segments form physical cross-linking points by virtue of inter-chain acting force, and the rubber segments are high-elasticity segments and contribute to elasticity. The physical cross-linking of the plastic segment changes reversibly with temperature, indicating the plastic processing characteristics of the thermoplastic elastomer. Therefore, thermoplastic elastomers have the physical and mechanical properties of vulcanized rubber and the processing properties of thermoplastics, are a novel polymer material between rubber and resin, and are often called third-generation rubber. The thermoplastic elastomer can replace part of rubber and can modify plastics.

The dual performance and wide characteristic of the thermoplastic elastomer, which is possessed by rubber and plastics, make it widely used in the rubber industry for manufacturing daily products such as rubber shoes and adhesive tapes, and various industrial products such as rubber tubes, adhesive tapes, rubber plates, rubber parts, adhesives and the like. Meanwhile, the thermoplastic elastomer can replace rubber to be widely used for modifying general thermoplastic resins such as PVC, PE, PP, PS and the like and even engineering plastics such as PU, PA, CA and the like, so that the plastic industry also has a brand-new situation.

The thermoplastic elastomer material can be produced by processing modes such as injection molding, extrusion, blow molding and the like. The extrusion processing mode is mainly realized by an extrusion device. The conventional screw extrusion apparatuses are mainly classified into single screw extrusion apparatuses and twin screw extrusion apparatuses.

The conventional twin-screw extrusion device mainly comprises a machine barrel and a screw extrusion mechanism arranged in the machine barrel, wherein the screw extrusion mechanism comprises two extrusion screws which are rotationally connected with the machine barrel and a motor for driving the screws to rotate. Thermoplastic elastomers are mainly classified into solid powder materials and liquid materials. In the actual production process, solid powder raw materials and liquid raw materials are often added into the feed end of the twin-screw extrusion device at the same time. The existing liquid raw materials directly inject liquid into a twin-screw basic device mainly through a hose. However, the hose is easily bent and squeezed by an external force, so that the infusion area in the hose is changed, the liquid output is unstable, and the quality of the produced thermoplastic elastomer is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a production of thermoplastic elastomer material is with syntropy twin-screw extrusion device, its technical problem that solve guarantees that liquid raw materials feeding is stable in order to guarantee the thermoplastic elastomer quality of producing.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the co-rotating twin-screw extrusion device for producing the thermoplastic elastomer material comprises a machine barrel, wherein one end of the machine barrel is a discharge end, a solid adding port and a liquid adding port are formed in the machine barrel, the liquid adding port is positioned between the solid adding port and the discharge end, and the co-rotating twin-screw extrusion device further comprises:

a solids addition mechanism connected to the barrel, the solids addition mechanism adding powdered feedstock into the barrel via the solids addition port;

the liquid adding mechanism is connected with the machine barrel and is used for adding liquid raw materials into the machine barrel through the liquid adding opening, the liquid adding mechanism comprises a base arranged on one side of the machine barrel and a material barrel placed on one side of the base, a support is arranged on the base, a liquid feeding pipe is detachably arranged on the support, the support rotates to enable one end of the liquid feeding pipe to extend into or separate from the liquid adding opening, and the other end of the liquid feeding pipe is communicated with a liquid feeding assembly for extracting the liquid raw materials from the material barrel;

and the screw extrusion mechanism is arranged inside the cylinder to perform thermoforming extrusion on the material in the cylinder.

The powder raw material enters the machine barrel from the solid adding port through the solid adding mechanism, the screw extrusion mechanism heats the powder to enable the powder to be in a liquid state and is conveyed forwards, after the powder is conveyed for a certain distance, the liquid raw material enters the machine barrel from the liquid adding port through the liquid adding mechanism, and the liquid raw material is conveyed along with the powder raw material which is in the liquid state under the action of the screw extrusion mechanism and is uniformly mixed with the powder raw material in the liquid state;

the liquid sending pipe is arranged on the support and extends towards the liquid adding port along the direction of the support, so that the liquid sending pipe is prevented from being placed at will and is easy to bend and extrude, and therefore, the stability in conveying of liquid raw materials is guaranteed, and the quality of the produced thermoplastic elastomer is improved.

The utility model discloses further set up to: send the liquid subassembly including install in the liquid pump of base, the play liquid end of liquid pump with the other end intercommunication of liquid sending pipe, install the liquid suction pipe on the liquid pump, the one end of liquid suction pipe with the feed liquor end intercommunication of liquid pump, the other end of liquid suction pipe stretches into in the feed cylinder.

Through adopting above-mentioned technical scheme, the liquid pump passes through the liquid-extracting pipe and extracts the liquid raw materials in the feed cylinder to carry liquid raw materials to liquid addition mouth through the liquid delivery pipe.

The utility model discloses further set up to: the support include the pole setting with fixed set up in the horizontal pole of pole setting, the pole setting with the base rotates to be connected, the horizontal pole with the liquid sending pipe can be dismantled and be connected.

Through adopting above-mentioned technical scheme, the pole setting rotates on the base in order to drive the horizontal pole and rotate to the one end that makes the horizontal pole keep away from the pole setting is close to or keeps away from liquid and adds the mouth, thereby drives the liquid sending pipe and keeps away from the one end that the liquid pump is close to or keeps away from liquid and adds the mouth.

The utility model discloses further set up to: the feed cylinder includes the support body and suspends in the barrel of support body, the discharge gate of feed cylinder is located terminal surface under the barrel.

Through adopting above-mentioned technical scheme, the setting of support body is so that whole unsettled to make inside the liquid suction pipe can stretch into the barrel from the lower terminal surface of barrel, make the evacuation that the liquid raw materials of bottom also can be smooth in the barrel.

The utility model discloses further set up to: one side of the base is provided with an electronic scale, and the charging barrel is placed on the electronic scale.

Through adopting above-mentioned technical scheme, the electronic scale can show the weight change of feed cylinder in real time, realizes the control to liquid feed pipe transport liquid raw materials through the reduction of the liquid raw materials in the control feed cylinder.

The utility model discloses further set up to: the screw extrusion mechanism comprises a first screw and a second screw which are arranged inside the machine barrel in a rotating mode, the extrusion conveying direction of the second screw is the same as that of the first screw, a driving motor for driving the first screw is fixedly arranged on the outer side of the machine barrel, and the first screw is provided with a linkage part for driving the second screw to rotate.

Through adopting above-mentioned technical scheme, driving motor orders about first screw rod and rotates, and linkage portion drives the second screw rod and follows first screw rod and rotate to carry the material in the barrel.

The utility model discloses further set up to: the spiral direction of the first screw rod is opposite to that of the second screw rod, the linkage part comprises a first gear which is coaxially and fixedly arranged on the first screw rod and a second gear which is coaxially and fixedly arranged on the second screw rod, and the first gear and the second gear are in meshing transmission.

By adopting the technical scheme, the first gear and the second gear are meshed so that the rotating direction of the first screw rod is opposite to that of the second screw rod

The utility model discloses further set up to: the solid adding mechanism comprises a pedestal erected at one end of the machine barrel and a hopper fixedly arranged on the pedestal, and the discharge end of the hopper is communicated with the solid adding port of the machine barrel.

Through adopting above-mentioned technical scheme, the bed frame is fixed in order to reduce the hopper and exert on the barrel in, reduces the barrel life reduction that causes to the pressure of barrel.

To sum up, the utility model discloses a beneficial technological effect does:

1. the liquid sending pipe is arranged on the support to extend to the liquid adding port along the direction of the support, so that the liquid sending pipe is prevented from being randomly placed and easily bent and extruded, and therefore, the stable conveying of liquid raw materials is ensured, and the quality of the produced thermoplastic elastomer is improved;

2. the upright rod rotates on the base to drive the cross rod to rotate, so that one end, far away from the upright rod, of the cross rod is close to or far away from the liquid adding port, and one end, far away from the liquid pump, of the liquid sending pipe is driven to be close to or far away from the liquid adding port;

3. the pole setting rotates on the base in order to drive the horizontal pole and rotate to the one end that makes the horizontal pole keep away from the pole setting is close to or is kept away from liquid interpolation mouth, thereby drives the liquid sending pipe and keeps away from the one end that the liquid pump is close to or keeps away from liquid interpolation mouth.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic sectional view of the screw extrusion mechanism;

fig. 3 is a schematic view of the mounting structure of the liquid adding mechanism.

In the figure, 1, a cylinder; 11. a discharge end; 12. a solids addition port; 13. a liquid addition port; 2. a solid addition mechanism; 21. a base frame; 22. a hopper; 3. a liquid adding mechanism; 31. a base; 32. a charging barrel; 321. a frame body; 322. a barrel; 323. a cover body; 33. a support; 331. erecting a rod; 332. a cross bar; 34. a liquid feeding assembly; 341. a liquid delivery pipe; 342. a liquid pump; 343. a liquid pumping pipe; 35. an electronic scale; 4. a screw extrusion mechanism; 41. a first screw; 42. a second screw; 43. a drive motor; 44. a linkage section; 441. a first gear; 442. a second gear.

Detailed Description

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1, for the utility model discloses a thermoplastic elastomer material production is with syntropy twin-screw extrusion device, including barrel 1, heating mechanism, solid add mechanism 2, liquid add mechanism 3 and screw extrusion mechanism 4.

The machine barrel 1 is arranged in a rectangular box. One end of the machine barrel 1 in the length direction is a discharging end 11. The upper end surface of the cylinder 1 is provided with a solid adding port 12 and a liquid adding port 13 in sequence along the length direction. The liquid addition port 13 is located between the solids addition port 12 and the discharge end 11. Preferably, the liquid addition port 13 is located in the middle of barrel 1.

Further, a solid guide pipe fixedly connected with the machine barrel 1 is fixedly arranged on the solid adding port 12, the axis of the solid guide pipe is arranged along the vertical direction, and the opening of the solid guide pipe faces upwards. And a liquid guide pipe fixedly connected with the machine barrel 1 is fixedly arranged on the liquid adding port 13, the axis of the liquid guide pipe is arranged along the vertical direction and is parallel to the axis of the solid guide pipe, and the opening of the liquid guide pipe faces upwards.

The heating mechanism is disposed inside the barrel 1. The heating mechanism comprises a heating sheet fixedly connected with the inner wall of the machine barrel 1, and the heating sheet is positioned at one end of the machine barrel 1 far away from the discharge end 11 so as to face the end. The heating sheet is used for heating the powder raw material to make the powder raw material into a liquid state and providing energy for the generation of the thermoplastic elastomer material.

The solid addition mechanism 2 is connected to the cylinder 1. The solid addition mechanism 2 is through a solid addition port 12 to add the powdery raw material into the cylinder 1. Specifically, the solid adding mechanism 2 comprises a pedestal 21 mounted on one end of the barrel 1 far away from the discharging end 11 and a hopper 22 fixedly arranged on the pedestal 21. The hopper 22 is located directly above the solids addition port 12. The hopper 22 has its feed opening facing upward and the hopper 22 has its discharge opening facing downward to engage the solids introduction tube so that the discharge end 11 of the hopper 22 communicates with the solids addition port 12 of barrel 1. The pedestals 21 hold the hopper 22 to reduce the backing of the hopper 22 on barrel 1, reducing the pressure on barrel 1 and resulting in reduced barrel 1 life.

Referring to fig. 1 and 3, a liquid addition mechanism 3 is connected to the cylinder 1. The liquid addition mechanism 3 adds the liquid raw material into the cylinder 1 via the liquid addition port 13.

The liquid addition mechanism 3 includes a base 31 provided on the side of the cylinder 1 and a cartridge 32 placed on the side of the base 31.

The charging barrel 32 comprises a frame body 321 and a barrel body 322 suspended on the frame body 321, and the discharge port of the charging barrel 32 is positioned on the lower end surface of the barrel body 322. The frame body 321 is a rectangular frame. The barrel 322 is disposed in a cylindrical shape to be placed at the center of the frame body 321. The axis of the cylinder 322 is disposed in a vertical direction to coincide with the center line of the frame 321. The barrel 322 is fixedly connected to the upper end of the frame 321 and does not abut against the lower end of the frame 321.

The opening of the cylinder 322 faces upward. The lower end surface of the cylinder 322 is inclined downward in the direction close to the axis. The lowest point of the lower end surface of the cylinder 322 is provided with a liquid outlet. The frame body 321 is arranged to suspend the whole body, so that the liquid material at the bottom of the cylinder body 322 can be smoothly emptied.

Further, a cover 323 is detachably provided on the opening of the cylinder 322.

Further, an electronic scale 35 is disposed on a side of the base 31 away from the barrel 1, and the barrel 32 is placed on the electronic scale 35, the frame body 321 and a weighing end face of the electronic scale 35. By adopting the above technical scheme, the electronic scale 35 can display the weight change of the charging barrel 32 in real time, and the control of the liquid material delivery pipe 341 is realized by controlling the reduction of the liquid material in the charging barrel 32.

Further, a liquid feeding assembly 34 is mounted on the base 31, and the liquid feeding assembly 34 is used for feeding the liquid raw material in the barrel 32 into the barrel 1. Specifically, the liquid sending assembly 34 includes a liquid pump 342 mounted on the base 31, a liquid drawing tube 343 mounted on an inlet end of the liquid pump 342, and a liquid sending tube 341 mounted on an outlet end of the liquid pump 342. The liquid pump 342 is provided with a liquid pumping pipe 343, one end of the liquid pumping pipe 343 is communicated with the liquid inlet end of the liquid pump 342, and the other end of the liquid pumping pipe 343 is communicated with the liquid outlet of the lower end face of the charging barrel 32 and extends into the charging barrel 32. One end of the liquid sending tube 341 is communicated with the liquid outlet end of the liquid pump 342, and the other end of the liquid sending tube 341 extends to the right above the liquid guide tube to be communicated with the liquid addition port 13. The liquid pump 342 draws the liquid material in the barrel 32 through the drawing tube 343 and sends the liquid material to the liquid addition port 13 through the liquid sending tube 341. Preferably, the liquid pump 342 is a magnetic gear pump to further accurately add the liquid material.

Further, a bracket 33 is provided on the base 31. The bracket 33 includes a vertical rod 331 and a cross bar 332 with one end fixed to the vertical rod 331. The axis of the vertical rod 331 is arranged in the vertical direction. The upright 331 is pivotally connected to the base 31. The axis of the cross-bar 332 is in the horizontal direction. The cross bar 332 rotates about the axis of the vertical rod 331.

The cross bar 332 is detachably connected to the liquid sending tube 341. The discharge end 11 of the liquid delivery tube 341 is located at one end of the cross bar 332 far away from the upright 331. The upright 331 rotates on the base 31 to rotate the cross bar 332, so that the end of the cross bar 332 far from the upright 331 is close to or far from the liquid adding port 13, and the end of the liquid sending tube 341 far from the liquid pump 342 is close to or far from the liquid adding port 13. Preferably, the liquid sending tube 341 is connected to the liquid sending tube 341 by a band.

Referring to fig. 1 and 2, a screw extrusion mechanism 4 is installed inside the cylinder 1 to thermoform and extrude the material in the cylinder 1.

The screw extrusion mechanism 4 includes a first screw 41 and a second screw 42 both rotatably provided inside the barrel 1. The axis of the first screw 41 is parallel to the axis of the second screw 42. The screw direction of the first screw 41 is opposite to that of the second screw 42.

A driving motor 43 for driving the first screw 41 is fixedly arranged on the outer side of the machine barrel 1. The drive motor 43 is located on the side of barrel 1 remote from the discharge end 11. Preferably, the driving motor 43 is coaxially and fixedly connected with the first screw 41.

The first screw 41 is provided with a link 44 that drives the second screw 42 to rotate. Specifically, the interlocking portion 44 includes a first gear 441 coaxially and fixedly disposed on the first screw 41 and a second gear 442 coaxially and fixedly disposed on the second screw 42. The first gear 441 is in mesh transmission with the second gear 442 so that the rotation direction of the first screw 41 is opposite to the rotation direction of the second screw 42, so that the extrusion conveyance direction of the second screw 42 is the same as the extrusion conveyance direction of the first screw 41.

The implementation principle of the embodiment is as follows: the powder raw material is placed in the hopper 22 to enter the machine barrel 1 from the solid adding port 12, the powder raw material is heated in the machine barrel 1 to become liquid, the driving motor 43 drives the first screw 41 to rotate, the second screw 42 follows the first screw 41 to convey the liquid powder raw material towards the discharge end 11, after a certain distance is conveyed, the liquid raw material enters the machine barrel 1 from the liquid adding port 13 through the liquid conveying pipe 341 under the action of the liquid pump 342, the liquid raw material is conveyed and uniformly mixed with the liquid powder raw material to generate the thermoplastic elastomer under the action of the screw extruding mechanism 4, and finally, the liquid raw material leaves the machine barrel 1 from the discharge end 11 of the machine barrel 1.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A co-rotating twin-screw extrusion device for producing thermoplastic elastomer materials comprises a machine barrel (1), wherein one end of the machine barrel (1) is a discharge end (11), the co-rotating twin-screw extrusion device is characterized in that a solid adding port (12) and a liquid adding port (13) are formed in the machine barrel (1), the liquid adding port (13) is located between the solid adding port (12) and the discharge end (11), and the co-rotating twin-screw extrusion device further comprises:

a solid adding mechanism (2) connected to the cylinder (1), the solid adding mechanism (2) adding the powdery raw material into the cylinder (1) through the solid adding port (12);

the liquid adding mechanism (3) is connected to the machine barrel (1), the liquid adding mechanism (3) adds liquid raw materials into the machine barrel (1) through the liquid adding opening (13), the liquid adding mechanism (3) comprises a base (31) arranged on one side of the machine barrel (1) and a material barrel (32) arranged on one side of the base (31), a bracket (33) is arranged on the base (31), a liquid feeding pipe (341) is detachably arranged on the bracket (33), the bracket (33) rotates to enable one end of the liquid feeding pipe (341) to extend into or separate from the liquid adding opening (13), and the other end of the liquid feeding pipe (341) is communicated with a liquid feeding assembly (34) for extracting the liquid raw materials from the material barrel (32);

and the screw extrusion mechanism (4) is arranged inside the machine barrel (1) to perform thermoforming extrusion on the material in the machine barrel (1).

2. A co-rotating twin-screw extrusion apparatus for thermoplastic elastomer material production according to claim 1, wherein the liquid feeding assembly (34) comprises a liquid pump (342) mounted on the base (31), a liquid outlet end of the liquid pump (342) is connected to the other end of the liquid feeding pipe (341), a liquid drawing pipe (343) is mounted on the liquid pump (342), one end of the liquid drawing pipe (343) is connected to a liquid inlet end of the liquid pump (342), and the other end of the liquid drawing pipe (343) extends into the barrel (32).

3. A co-rotating twin-screw extrusion apparatus for the production of thermoplastic elastomer material as claimed in claim 1, wherein said support (33) comprises a vertical rod (331) and a cross-bar (332) fixedly arranged on said vertical rod (331), said vertical rod (331) being rotatably connected to said base (31), said cross-bar (332) being detachably connected to said liquid feeding pipe (341).

4. A co-rotating twin-screw extrusion apparatus for thermoplastic elastomer material production according to claim 1, wherein the barrel (32) comprises a frame body (321) and a barrel body (322) suspended from the frame body (321), and the discharge port of the barrel (32) is located on the lower end face of the barrel body (322).

5. A co-rotating twin-screw extrusion apparatus for the production of thermoplastic elastomer material as claimed in claim 1, wherein an electronic scale (35) is provided on one side of said base (31), and said barrel (32) is placed on said electronic scale (35).

6. The apparatus as claimed in claim 1, wherein the screw extrusion mechanism (4) comprises a first screw (41) and a second screw (42) both rotatably disposed inside the barrel (1), the extrusion conveying direction of the second screw (42) is the same as that of the first screw (41), a driving motor (43) for driving the first screw (41) is fixedly disposed outside the barrel (1), and the first screw (41) is provided with a linkage portion (44) for driving the second screw (42) to rotate.

7. A co-rotating twin screw extrusion apparatus for thermoplastic elastomer material production as claimed in claim 6, wherein the screw direction of said first screw (41) is opposite to the screw direction of said second screw (42), said linkage portion (44) comprises a first gear (441) coaxially fixedly provided to said first screw (41) and a second gear (442) coaxially fixedly provided to said second screw (42), said first gear (441) is in mesh transmission with said second gear (442).

8. A co-rotating twin-screw extrusion apparatus for the production of thermoplastic elastomer material according to claim 1, characterised in that the solid adding means (2) comprises a pedestal (21) mounted at one end of the barrel (1) and a hopper (22) fixedly mounted on the pedestal (21), the discharge end (11) of the hopper (22) being in communication with the solid adding port (12) of the barrel (1).