阅读说明：本技术 双螺杆挤出机强制侧喂料机安装结构 (Forced side feeding machine mounting structure of double-screw extruder ) 是由 霍庆宪 迟华健 罗磊 霍春雨 于 2021-02-20 设计创作，主要内容包括：本发明公开了一种双螺杆挤出机强制侧喂料机安装结构,包括强制侧喂料机,强制侧喂料机侧喂料筒连接双螺杆挤出机侧喂料筒体,侧喂料筒的前部设有进水接口、冷却水道和排水接口,侧喂料筒后端连接法兰通过联接体连接齿轮箱前端面,齿轮箱后端面通过连接法兰连接减速电机的前端面,齿轮箱底部安装在喂料机底板上部,喂料机底板下部安装滑动轴承,滑动轴承安装在滑动轴承滑杆上,滑动轴承滑杆上安装有限位环,其通过固定螺钉固定在滑动轴承滑杆上对滑动轴承进行限位。本发明解决了强制侧喂料机侧喂料筒安装定位调节困难、侧喂料筒由于不能进行通水冷却造成进料口喷料现象以及齿轮箱装配维修困难的问题。(The invention discloses a mounting structure of a forced side feeding machine of a double-screw extruder, which comprises the forced side feeding machine, wherein a side feeding cylinder of the forced side feeding machine is connected with a side feeding cylinder body of the double-screw extruder, the front part of the side feeding cylinder is provided with a water inlet interface, a cooling water channel and a water drainage interface, a connecting flange at the rear end of the side feeding cylinder is connected with the front end surface of a gear box through a connecting body, the rear end surface of the gear box is connected with the front end surface of a speed reducing motor through the connecting flange, the bottom of the gear box is mounted at the upper part of a bottom plate of the feeding machine, the lower part of the bottom plate of the feeding machine is provided with a sliding bearing, the. The invention solves the problems that the installation, positioning and adjustment of the side feeding barrel of the forced side feeding machine are difficult, the side feeding barrel cannot be cooled by water, the material is sprayed at the feeding port, and the assembly and maintenance of the gear box are difficult.)

1. The utility model provides a double screw extruder forces side feeding machine mounting structure, includes forces side feeding machine, forces side feeding barrel (7) of side feeding machine to be connected to double screw extruder's side feed barrel (4), its characterized in that: a feed inlet (36) is formed in the rear portion of the side feeding barrel (7), a water inlet interface (34), a cooling water channel (37) and a water discharge interface (33) are formed in the front portion of the side feeding barrel (7), cooling water enters the cooling water channel (37) from the water inlet interface (34) and is discharged through the water discharge interface (33), the front portion of the side feeding barrel (7) is cooled by the cooling water, a pair of side feeding screws (6) which are meshed with each other are installed in the side feeding barrel (7), and a connecting flange II (35) at the rear end of the side feeding barrel (7) is connected with the front end face of the gear box (11) through a connecting body (10);

the rear end face of the gear box (11) is connected with the front end face of the speed reducing motor (15) through a connecting flange (14), the tail end of the side feeding screw (6) is respectively connected with the output ends of an output gear shaft A (38) and an output gear shaft B (39) of the gear box (11), the bottom of the gear box (11) is installed on the upper portion of a feeding machine bottom plate (16), the front end and the rear end of the lower portion of the feeding machine bottom plate (16) are respectively provided with a sliding bearing (21), the sliding bearing (21) is installed on a sliding bearing sliding rod (17), the sliding bearing sliding rod (17) is respectively and fixedly installed on two sides of a support installing plate (25) through a sliding rod support (18), a limiting ring (22) is installed on the sliding bearing sliding rod (17), the limiting ring (22) can slide along the sliding bearing sliding rod (17) along with the sliding bearing (21) or is fixed on the sliding bearing sliding rod (17) through a fixing screw (24) to axially limit the sliding bearing (21);

the input end of an input gear shaft (40) of the gear box (11) is connected with a speed reduction motor output shaft (13), gears of the input gear shaft (40) are respectively meshed with gears of an output gear shaft A (38) and an output gear shaft B (39), and the input gear shaft (40) drives the output gear shaft A (38) and the output gear shaft B (39) to rotate in the same direction and at the same speed.

2. The twin-screw extruder forced side feeder mounting structure according to claim 1, wherein: the side feeding barrel flange II (5) of the side feeding barrel (4) is arranged above the barrel support (3), the lower part of the barrel support (3) is arranged on the upper part of the supporting seat (2), the lower part of the supporting seat (2) is connected with the upper part of the double-screw extruder base (1), and the connecting flange I (32) on the front end surface of the side feeding barrel (7) is tightly connected to the side feeding port (30) of the side feeding barrel (4) through a screw.

3. The twin-screw extruder forced side feeder mounting structure according to claim 1, wherein: the polytetrafluoroethylene sealing ring (8) is arranged at the tail part of the side feeding screw (6) to prevent the material in the side feeding cylinder (7) from leaking, the gland (9) is arranged at the sealing ring hole at the front end of the connecting body (10), and the polytetrafluoroethylene sealing ring (8) is fixed between the sealing ring hole at the front end of the connecting body (10) and the tail part of the side feeding screw (6).

4. The twin-screw extruder forced side feeder mounting structure according to claim 1, wherein: the front part of a reducing motor output shaft (13) of the reducing motor (15) and the inside of the connecting flange (14) are provided with the aligning roller bearing (12) which is used for supporting the front part of the reducing motor output shaft (13) and preventing the reducing motor output shaft (13) from jumping during rotation.

5. The twin-screw extruder forced side feeder mounting structure according to claim 4, wherein: an adjusting screw (29) is arranged at the front part of the bottom plate (16) of the feeding machine, and the adjusting screw (29) is propped against the bottom of the side feeding cylinder (7) and is used for adjusting the installation levelness of the side feeding cylinder (7), the connecting body (10), the gear box (11) and the speed reducing motor (15).

6. The twin-screw extruder forced side feeder mounting structure according to claim 5, wherein: the rear end of the lower part of the support mounting plate (25) is connected with an upper support plate (28), the front end of the lower part of the support mounting plate (25) is connected with the upper end of a support fixing plate (26), the front side of the lower part of the support fixing plate (26) is connected with the side of the double-screw extruder base (1), the lower support plate (27) is connected with the rear side of the lower part of the support fixing plate (26), the upper end of an adjusting screw (19) is fixedly arranged at the upper support plate (28) through a locking nut (20), the lower end of the adjusting screw (19) is fixedly arranged at the lower support plate (27) through the locking nut (20), the adjusting screw (19) and the locking nut (20) are used for increasing the connecting strength between the support mounting plate (25) and the support fixing plate (26), and the mounting levelness.

7. The twin-screw extruder forced side feeder mounting structure according to claim 6, wherein: the lower rear end of support mounting panel (25) connects the upper end of support inclined strut board (23), and the lower extreme of support inclined strut board (23) connects the lower part trailing flank of support fixed plate (26), and support inclined strut board (23) are used for strengthening the joint strength between support mounting panel (25) and support fixed plate (26).

8. The twin-screw extruder forced side feeder mounting structure according to claim 1, wherein: journals at two ends of the input gear shaft (40) are respectively supported and mounted at bearing holes of the input gear shaft of the gear box (11) through a tapered roller bearing I (42) and a tapered roller bearing II (43), and journals at two ends of the output gear shaft A (38) and the output gear shaft B (39) are respectively supported and mounted at bearing holes of the output gear shaft of the gear box (11) through a tapered roller bearing III (44) and a tapered roller bearing IV (45).

9. The twin-screw extruder forced side feeder mounting structure according to claim 8, wherein: a framework oil seal I (41) is arranged at the input end of the input gear shaft (40) and is used for sealing lubricating oil at the input end of the input gear shaft (40); and skeleton oil seals II (46) are respectively arranged at the output ends of the output gear shaft A (38) and the output gear shaft B (39) and are used for sealing lubricating oil at the output ends of the output gear shaft A (38) and the output gear shaft B (39).

Technical Field

The invention relates to a double-screw extruder, in particular to a mounting structure of a forced side feeder of the double-screw extruder.

Background

In the process of mixing and modifying the polymer material by the double-screw extruder, a specific material is fed into a side feeding cylinder of the double-screw extruder by a forced side feeding machine according to the process requirements, the performance of the polymer can be improved by adding the specific material, and the polymer material which meets the special requirements and has higher performance can be obtained after the polymer is blended and modified by adding the specific material.

The installation structure of the forced side feeder of the double-screw extruder adopted at present has the following defects:

1. the forced side feeding machine is arranged on the trolley, and when the forced side feeding machine is connected to a side feeding cylinder body of the double-screw extruder, the height center and the horizontal center between the side feeding ports of the side feeding cylinder and the side feeding cylinder body need to be adjusted, so that the positioning and adjustment of the two components are difficult.

2. The side feeding cylinder can not be cooled by water, so that the heat of the heater on the side feeding cylinder body can be transferred to the side feeding cylinder in the feeding process of the forced side feeding machine, so that the moisture contained in the material in the side feeding cylinder is vaporized, the vaporized moisture is discharged from the feeding port, the material spraying phenomenon at the feeding port is caused, and the stable feeding amount of the material is influenced.

3. The gear box and the reducing motor of the forced side feeding machine need to be integrally assembled, the bearing in the gear box is positioned by the reducing motor, and the reducing motor needs to be installed simultaneously when the gear box is assembled, so that difficulty is caused to assembly and maintenance.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide an improved installation structure of a forced side feeding machine of a double-screw extruder, which solves the problems that the installation and positioning adjustment of a side feeding cylinder of the forced side feeding machine is difficult, the material spraying phenomenon of a feeding port is caused by the fact that the side feeding cylinder cannot be cooled by water, and the assembly and maintenance of a gear box are difficult.

In order to achieve the purpose, the invention adopts the following technical scheme:

a forced side feeding machine mounting structure of a double-screw extruder comprises a forced side feeding machine, wherein a side feeding cylinder of the forced side feeding machine is connected to a side feeding cylinder body of the double-screw extruder, a feeding hole is formed in the rear portion of the side feeding cylinder, a water inlet interface, a cooling water channel and a water drainage interface are formed in the front portion of the side feeding cylinder, cooling water enters the cooling water channel from the water inlet interface and is discharged through the water drainage interface, the front portion of the side feeding cylinder is cooled by the cooling water, a pair of mutually meshed side feeding screws are mounted in the side feeding cylinder, and a connecting flange II at the rear end of the side feeding cylinder is connected with the front end face of a gear box through a connecting;

the rear end face of the gear box is connected with the front end face of the speed reducing motor through a connecting flange, the tail end of the side feeding screw rod is respectively connected with the output ends of an output gear shaft A and an output gear shaft B of the gear box, the bottom of the gear box is arranged at the upper part of a bottom plate of the feeding machine, sliding bearings are respectively arranged at the front end and the rear end of the lower part of the bottom plate of the feeding machine, the sliding bearings are arranged on sliding bearing sliding rods, the sliding bearing sliding rods are respectively and fixedly arranged at two sides of a support mounting plate through sliding rod supports, limiting rings are arranged on the sliding bearing sliding rods, and are provided with fixing screws, and the limiting rings can;

the input end of an input gear shaft of the gear box is connected with an output shaft of the speed reducing motor, gears of the input gear shaft are respectively meshed with gears of an output gear shaft A and a gear of an output gear shaft B, and the input gear shaft drives the output gear shaft A and the output gear shaft B to rotate in the same direction and at the same speed.

Furthermore, a side feeding cylinder flange II of the side feeding cylinder is arranged above the cylinder support, the lower part of the cylinder support is arranged on the upper part of the supporting seat, the lower part of the supporting seat is connected with the upper part of the double-screw extruder base, and a connecting flange I on the front end surface of the side feeding cylinder is tightly connected to a side feeding port of the side feeding cylinder through a screw.

Furthermore, a polytetrafluoroethylene sealing ring is arranged at the tail part of the side feeding screw rod to prevent the material in the side feeding cylinder from leaking, and a gland is arranged at the sealing ring hole at the front end of the connecting body to fix the polytetrafluoroethylene sealing ring between the sealing ring hole at the front end of the connecting body and the tail part of the side feeding screw rod.

Furthermore, the front part of the output shaft of the speed reducing motor and the inside of the connecting flange are provided with core-adjusting roller bearings which are used for supporting the front part of the output shaft of the speed reducing motor and preventing the output shaft of the speed reducing motor from jumping when rotating.

Furthermore, an adjusting screw is arranged at the front part of the bottom plate of the feeder and is propped against the bottom of the side feeding cylinder for adjusting the installation levelness of the side feeding cylinder, the connecting body, the gear box and the speed reducing motor.

Furthermore, an upper supporting plate is connected to the lower rear end of the support mounting plate, the lower front end of the support mounting plate is connected to the upper end of a support fixing plate, the lower front side of the support fixing plate is connected to the side of the double-screw extruder base, the lower rear side of the support fixing plate is connected to the lower rear side of the support fixing plate, the upper end of the adjusting screw is fixed to the upper supporting plate through a locking nut, the lower end of the adjusting screw is fixed to the lower supporting plate through a locking nut, the adjusting screw and the locking nut are used for increasing the connecting strength between the support mounting plate and the support fixing plate, and the mounting levelness of the support.

Further, the lower rear end of the support mounting plate is connected with the upper end of a support inclined supporting plate, the lower end of the support inclined supporting plate is connected with the lower rear side face of a support fixing plate, and the support inclined supporting plate is used for enhancing the connection strength between the support mounting plate and the support fixing plate.

Furthermore, journals at two ends of the input gear shaft are respectively supported and mounted at bearing holes of the input gear shaft of the gear box through a tapered roller bearing I and a tapered roller bearing II, and journals at two ends of the output gear shaft A and the output gear shaft B are respectively supported and mounted at bearing holes of the output gear shaft of the gear box through a tapered roller bearing III and a tapered roller bearing IV.

Further, a framework oil seal I is arranged at the input end of the input gear shaft and used for sealing lubricating oil at the input end of the input gear shaft; and skeleton oil seals II are respectively arranged at the output ends of the output gear shaft A and the output gear shaft B and are used for sealing lubricating oil at the output ends of the output gear shaft A and the output gear shaft B.

By adopting the mounting structure of the forced side feeder of the double-screw extruder, the center of the side feeding cylinder is always consistent with the center of the side feeding port through the limiting action of the sliding bearing and the sliding bearing sliding rod, so that the mounting operation of the forced side feeder is convenient; the cooling water channel is arranged at the front part of the side feeding cylinder, so that the heat of the heater on the side feeding cylinder body can be effectively prevented from being conducted to the feeding port of the side feeding cylinder, the moisture contained in the material in the side feeding cylinder is prevented from being vaporized, and the side feeding machine is forced to perform a stable feeding process; the gear box and the speed reducing motor are connected through the connecting flange, the assembly structure is simple, and assembly and maintenance time is saved.

Drawings

FIG. 1 is a schematic view of the installation structure of a forced side feeder of a twin-screw extruder according to the present invention.

Fig. 2 is a view from a-a in fig. 1.

FIG. 3 is a front view of a side feed cylinder.

FIG. 4 is a top view of the side feed cylinder.

FIG. 5 is a front view of a side feed barrel.

FIG. 6 is a right side view of the side feed drum.

FIG. 7 is a top view of a side feed drum.

Fig. 8 is a view from B-B in fig. 7.

Fig. 9 is a front view of the gear box.

Fig. 10 is a left side view of the gearbox.

FIG. 11 is a right side view of the gearbox.

Fig. 12 is a view from direction C-C of fig. 9.

Fig. 13 is a view from direction D-D in fig. 9.

In the figure: 1-a twin-screw extruder base; 2-a support seat; 3-a cylinder support; 4-side feeding cylinder; 5-side feeding cylinder flange II; 6-side feeding screw; 7-side feeding cylinder; 8-polytetrafluoroethylene sealing rings; 9-pressing a cover; 10-a coupling body; 11-a gearbox; 12-aligning roller bearings; 13-a reduction motor output shaft; 14-a connecting flange; 15-a reduction motor; 16-feeder floor; 17-sliding bearing slide bar; 18-a slide bar support; 19-adjusting the screw; 20-locking the nut; 21-a sliding bearing; 22-a stop collar; 23-bracket inclined supporting plate; 24-a set screw; 25-a bracket mounting plate; 26-a bracket fixing plate; 27-a lower support plate; 28-upper support plate; 29-adjusting screws; 30-side feeding port; 31-side feeding cylinder flange I; 32-connecting flange I; 33-a drain connection; 34-water inlet interface; 35-connecting flange II; 36-a feed inlet; 37-cooling water channels; 38-output gear shaft a; 39-output gear shaft B; 40-input gear shaft; 41-framework oil seal I; 42-tapered roller bearing I; 43-tapered roller bearing II; 44-tapered roller bearing III; 45-tapered roller bearing IV; 46-framework oil seal II.

The specific implementation mode is as follows:

the invention is further explained below with reference to the drawings.

As shown in fig. 1, 2 and 3, the installation structure of the forced side feeder of the twin-screw extruder comprises the forced side feeder, wherein the forced side feeder is formed by combining a side feeding cylinder 7, a pair of side feeding screws 6 which are meshed with each other, a connecting body 10, a gear box 11, a connecting flange 14 and a speed reducing motor 15. The side feeding barrel 7 of the forced side feeding machine is connected to the side feeding port 30 of the side feeding cylinder body 4 of the double-screw extruder.

As shown in FIGS. 3 and 4, a side feeding cylinder flange II5 of the side feeding cylinder 4 is installed above the cylinder support 3, the lower part of the cylinder support 3 is installed on the upper part of the support base 2, and the lower part of the support base 2 is connected with the upper part of the twin-screw extruder base 1. The side feeding cylinder body 4 is respectively connected with other cylinder bodies of the twin-screw extruder through a side feeding cylinder body flange I31 and a side feeding cylinder body flange II5, and a connecting flange I32 on the front end surface of the side feeding cylinder 7 is tightly connected at a side feeding port 30 of the side feeding cylinder body 4 through screws.

As shown in fig. 1, 2, 5, 6, 7, 8 and 13, a feed inlet 36 is arranged at the rear part of the side feed cylinder 7, the material enters the side feed cylinder 7 from the feed inlet 36 of the side feed cylinder 7, a water inlet port 34 and a water discharge port 33 are processed at the lower end of the front part of the side feeding cylinder 7, cooling water channels 37 are processed on the four walls of the front part of the side feeding cylinder 7, the water inlet port 34 is connected with an external cooling water pipe, the water discharge port 33 is connected with an external water discharge pipe, cooling water enters the cooling water channels 37 in the four walls of the front part of the side feeding cylinder 7 from the water inlet port 34, the cooling water in the cooling water channels 37 is discharged through the water discharge port 33, and the cooling water cools the front part of the side feeding cylinder 7, the heat of the heater on the side feeding cylinder body 4 can be effectively prevented from being conducted to the feed inlet 36 of the side feeding cylinder 7, so that the moisture contained in the material in the side feeding cylinder 7 is prevented from being vaporized, and the stable feeding amount of the material is ensured. A pair of intermeshing side feed screws 6 are installed in parallel in the side feed cylinder 7 with 90 DEG misalignment. The connecting flange II35 at the rear end of the side feeding barrel 7 is connected with the front end surface of the connecting body 10, the rear end surface of the connecting body 10 is connected with the front end surface of the gear box 11, and the tail end of the side feeding screw 6 is respectively connected with the output ends of an output gear shaft A38 and an output gear shaft B39 of the gear box 11; polytetrafluoroethylene sealing rings 8 are respectively arranged at the tail parts of the side feeding screws 6 to prevent the materials in the side feeding cylinders 7 from leaking from the tail parts of the side feeding screws 6 when the side feeding screws 6 rotate; the gland 9 is arranged at the front end sealing ring hole of the connecting body 10, and the polytetrafluoroethylene sealing ring 8 is fixed between the front end sealing ring hole of the connecting body 10 and the tail part of the side feeding screw 6.

The rear end face of the gear box 11 is provided with the front end face of a connecting flange 14, the rear end face of the connecting flange 14 is connected with the front end face of a speed reducing motor 15, a core adjusting roller bearing 12 is arranged in the front of an output shaft 13 of the speed reducing motor 15 and inside the connecting flange 14, the front of the output shaft 13 of the speed reducing motor is supported by the core adjusting roller bearing 12, the jumping of the output shaft 13 of the speed reducing motor during rotation is prevented, the stable rotation of the output shaft 13 of the speed reducing motor is ensured, and the bottom of the gear box 11 is arranged on the upper. As shown in FIG. 2, an adjusting screw 29 is mounted at the front part of the feeding machine bottom plate 16, and the adjusting screw 29 is pressed against the bottom of the side feeding cylinder 7 for adjusting the mounting levelness of the side feeding cylinder 7, the coupling body 10, the gear box 11 and the speed reducing motor.

As shown in fig. 1 and 2, two sliding bearings 21 are respectively installed at the front end and the rear end of the lower part of the feeder bottom plate 16, the sliding bearings 21 are installed on sliding bearing slide bars 17, the two sliding bearing slide bars 17 are respectively and fixedly installed at two sides of a support installation plate 25 by slide bar supports 18, a limiting ring 22 is installed on the sliding bearing slide bars 17, the limiting ring 22 is provided with a fixing screw 24, the limiting ring 22 can slide along the sliding bearing slide bars 17 along with the sliding bearings 21 or is fixed on the sliding bearing slide bars 17 by the fixing screw 24 to axially limit the sliding bearings 21, and the sliding bearings 21 are prevented from moving back and forth on the sliding.

The upper supporting plate 28 is connected to the lower rear end of the support mounting plate 25, the upper end of the support inclined supporting plate 23 is connected to the lower rear end of the support mounting plate 25, the upper end of the support fixing plate 26 is connected to the lower front end of the support mounting plate 25, the lower end of the support inclined supporting plate 23 is connected to the lower rear side of the support fixing plate 26, the support inclined supporting plate 23 is used for enhancing the connection strength between the support mounting plate 25 and the support fixing plate 26, the lower front side of the support fixing plate 26 is connected to the side of the double-screw extruder base 1, and the lower supporting plate 27 is connected to the lower rear side. The upper end of the adjusting screw rod 19 is fixed at the upper support plate 28 by two locking nuts 20, the lower end of the adjusting screw rod 19 is fixed at the lower support plate 27 by the locking nuts 20, and the adjusting screw rod 19 and the locking nuts 20 are used for increasing the connecting strength between the bracket mounting plate 25 and the bracket fixing plate 26 and adjusting the mounting levelness of the bracket mounting plate 25.

As shown in fig. 9-13, the input end of the input gear shaft 40 of the gear box 11 is connected to the output shaft 13 of the reduction motor, the journals at the two ends of the input gear shaft 40 are respectively supported and mounted at the bearing hole of the input gear shaft of the gear box 11 by a tapered roller bearing I42 and a tapered roller bearing II43, and the input end of the input gear shaft 40 is mounted with a skeleton oil seal I41 for sealing the lubricating oil at the input end of the input gear shaft 40; the journals at the two ends of the output gear shaft A38 and the output gear shaft B39 are respectively supported and mounted at the bearing holes of the output gear shaft of the gear box 11 by a tapered roller bearing III44 and a tapered roller bearing IV45, and framework oil seals II46 are respectively mounted at the output ends of the output gear shaft A38 and the output gear shaft B39 and used for sealing lubricating oil at the output ends of the output gear shaft A38 and the output gear shaft B39. The lower gear part of the input gear shaft 40 is respectively meshed with the upper gear parts of the output gear shaft A38 and the output gear shaft B39, and the input gear shaft 40 drives the output gear shaft A38 and the output gear shaft B39 to rotate in the same direction and at the same speed.

The function of the installation structure of the forced side feeder of the double-screw extruder is as follows:

when the forced side feeding machine is overhauled or cleaned, the side feeding cylinder 7 of the forced side feeding machine needs to be moved away from the side feeding port 30 of the side feeding cylinder body 4, the fixing screw 24 on the limiting ring 22 is loosened, the feeding machine bottom plate 16 is pushed, the feeding machine bottom plate 16 is supported by the sliding bearing 21 to move backwards along the sliding bearing sliding rod 17, the forced side feeding machine is driven to move away from the side feeding port 30 of the side feeding cylinder body 4, after the forced side feeding machine is moved away, the fixing screw 24 on the limiting ring 22 is locked, and the forced side feeding machine is prevented from moving forwards and backwards, so that the overhaul or cleaning operation is facilitated. When the forced side feeding machine needs to be operated, the fixing screw 24 on the limiting ring 22 is loosened, the feeding machine bottom plate 16 is pushed, the feeding machine bottom plate 16 is supported by the sliding bearing 21 and moves forwards along the sliding bearing sliding rod 17, and the end face of the connecting flange I32 of the side feeding cylinder 7 is enabled to be close to the side feeding opening 30 of the side feeding cylinder body 4. Because the forced side feeder is limited by the sliding bearing 21 and the sliding bearing sliding rod 17, the center of the side feeding cylinder 7 is always consistent with the center of the side feeding port 30, the connecting flange I32 which can be quickly connected with the side feeding cylinder 7 is arranged at the side feeding port 30 of the side feeding cylinder body 4, the requirement of convenient operation is met, and the time for overhauling or cleaning the forced side feeder is saved;

when the forced side feeding machine is operated, the speed reducing motor 15 is started, the speed reducing motor output shaft 13 of the speed reducing motor 15 drives the input gear shaft 40 to rotate, the input gear shaft 40 drives the output gear shaft A38 and the output gear shaft B39 to rotate at the same direction and speed, the output gear shaft A38 and the output gear shaft B39 respectively drive a pair of side feeding screws 6 which are meshed with each other to rotate in the side feeding cylinder 7, and the side feeding screws 6 push the material at the feeding hole 36 to the side feeding hole 30 through the side feeding cylinder 7 so as to push the material into the side feeding cylinder body 4 forcibly. The structure is simple, so that the feeding is stable and the use is reliable, and the process quality of mixing and modifying the polymer material is ensured.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.